forked from qt-creator/qt-creator
fd9ca07a11
Previously, if enabled in the configuration, system
GDB pretty printers were loaded only once for all
objfiles present at the point in time when the loading
happened, which meant that GDB pretty printers for
objfiles loaded later were not taken into account
and thus unavailable if they were defined in the
corresponding autoload scripts for the objfiles.
In order to make use of those as well, remember whether
loading of system GDB pretty printer is enabled, and if so,
evaluate the pretty printers set at the new objfiles
in the handler for GDB's new_objfile event.
Extract the functionality for handling one objfile's
pretty_printers to a separate function
'importPlainDumpersForObj' to avoid code duplication.
Note: For this to actually work, it is required that the
objfile passed to the registered GDB new_objfile handler
actually has the pretty printers set at this stage.
This was only recently implemented on GDB side, in
GDB commit 2c473def12b08100e6b56261f01112db7f6aeab5
("gdb: do autoload before notifying Python side in
new_objfile event", 2021-04-27, [1]).
Therefore, this currently only works with the current
development version of GDB built from its git master
branch, not with any already released GDB versions.
(When older GDB versions are used, this will just behave
as it used to, and the corresponding GDB pretty-printers
will not be used.)
[1] https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=2c473def12b08100e6b56261f01112db7f6aeab5
Fixes: QTCREATORBUG-25339
Change-Id: Ibc0ab16fbb75184fa199c0709bfc73954f04c193
Reviewed-by: hjk <hjk@qt.io>
1642 lines
61 KiB
Python
1642 lines
61 KiB
Python
############################################################################
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#
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# Copyright (C) 2016 The Qt Company Ltd.
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# Contact: https://www.qt.io/licensing/
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#
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# This file is part of Qt Creator.
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#
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# Commercial License Usage
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# Licensees holding valid commercial Qt licenses may use this file in
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# accordance with the commercial license agreement provided with the
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# Software or, alternatively, in accordance with the terms contained in
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# a written agreement between you and The Qt Company. For licensing terms
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# and conditions see https://www.qt.io/terms-conditions. For further
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# information use the contact form at https://www.qt.io/contact-us.
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#
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# GNU General Public License Usage
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# Alternatively, this file may be used under the terms of the GNU
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# General Public License version 3 as published by the Free Software
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# Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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# included in the packaging of this file. Please review the following
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# information to ensure the GNU General Public License requirements will
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# be met: https://www.gnu.org/licenses/gpl-3.0.html.
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#
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############################################################################
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try:
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import __builtin__
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except:
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import builtins
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import gdb
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import os
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import os.path
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import re
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import sys
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import struct
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import tempfile
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from dumper import DumperBase, Children, toInteger, TopLevelItem
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from utils import TypeCode
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from gdbtracepoint import *
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#######################################################################
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#
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# Infrastructure
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#
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#######################################################################
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def safePrint(output):
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try:
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print(output)
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except:
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out = ''
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for c in output:
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cc = ord(c)
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if cc > 127:
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out += '\\\\%d' % cc
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elif cc < 0:
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out += '\\\\%d' % (cc + 256)
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else:
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out += c
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print(out)
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def registerCommand(name, func):
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class Command(gdb.Command):
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def __init__(self):
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super(Command, self).__init__(name, gdb.COMMAND_OBSCURE)
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def invoke(self, args, from_tty):
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safePrint(func(args))
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Command()
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#######################################################################
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#
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# Convenience
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#
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#######################################################################
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# For CLI dumper use, see README.txt
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class PPCommand(gdb.Command):
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def __init__(self):
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super(PPCommand, self).__init__('pp', gdb.COMMAND_OBSCURE)
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def invoke(self, args, from_tty):
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print(theCliDumper.fetchVariable(args))
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PPCommand()
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# Just convenience for 'python print gdb.parse_and_eval(...)'
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class PPPCommand(gdb.Command):
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def __init__(self):
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super(PPPCommand, self).__init__('ppp', gdb.COMMAND_OBSCURE)
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def invoke(self, args, from_tty):
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print(gdb.parse_and_eval(args))
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PPPCommand()
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def scanStack(p, n):
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p = int(p)
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r = []
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for i in range(n):
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f = gdb.parse_and_eval('{void*}%s' % p)
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m = gdb.execute('info symbol %s' % f, to_string=True)
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if not m.startswith('No symbol matches'):
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r.append(m)
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p += f.type.sizeof
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return r
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class ScanStackCommand(gdb.Command):
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def __init__(self):
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super(ScanStackCommand, self).__init__('scanStack', gdb.COMMAND_OBSCURE)
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def invoke(self, args, from_tty):
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if len(args) == 0:
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args = 20
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safePrint(scanStack(gdb.parse_and_eval('$sp'), int(args)))
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ScanStackCommand()
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#######################################################################
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#
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# Import plain gdb pretty printers
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#
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#######################################################################
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class PlainDumper():
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def __init__(self, printer):
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self.printer = printer
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self.typeCache = {}
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def __call__(self, d, value):
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try:
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printer = self.printer.gen_printer(value.nativeValue)
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except:
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printer = self.printer.invoke(value.nativeValue)
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d.putType(value.nativeValue.type.name)
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val = printer.to_string()
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if isinstance(val, str):
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# encode and avoid extra quotes ('"') at beginning and end
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d.putValue(d.hexencode(val), 'utf8:1:0')
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elif sys.version_info[0] <= 2 and isinstance(val, unicode):
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d.putValue(val)
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elif val is not None: # Assuming LazyString
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d.putCharArrayValue(val.address, val.length,
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val.type.target().sizeof)
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lister = getattr(printer, 'children', None)
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if lister is None:
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d.putNumChild(0)
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else:
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if d.isExpanded():
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children = lister()
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with Children(d):
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i = 0
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for (name, child) in children:
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d.putSubItem(name, d.fromNativeValue(child))
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i += 1
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if i > 1000:
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break
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d.putNumChild(1)
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def importPlainDumpers(args):
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if args == 'off':
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theDumper.usePlainDumpers = False
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try:
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gdb.execute('disable pretty-printer .* .*')
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except:
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# Might occur in non-ASCII directories
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DumperBase.warn('COULD NOT DISABLE PRETTY PRINTERS')
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else:
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theDumper.usePlainDumpers = True
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theDumper.importPlainDumpers()
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registerCommand('importPlainDumpers', importPlainDumpers)
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class OutputSaver():
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def __init__(self, d):
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self.d = d
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def __enter__(self):
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self.savedOutput = self.d.output
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self.d.output = ''
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def __exit__(self, exType, exValue, exTraceBack):
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|
if self.d.passExceptions and exType is not None:
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self.d.showException('OUTPUTSAVER', exType, exValue, exTraceBack)
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self.d.output = self.savedOutput
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else:
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self.savedOutput += self.d.output
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self.d.output = self.savedOutput
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return False
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#######################################################################
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#
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# The Dumper Class
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|
#
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#######################################################################
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|
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class Dumper(DumperBase):
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def __init__(self):
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DumperBase.__init__(self)
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# whether to load plain dumpers for objfiles
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self.usePlainDumpers = False
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|
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# These values will be kept between calls to 'fetchVariables'.
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self.isGdb = True
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self.typeCache = {}
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self.interpreterBreakpointResolvers = []
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def prepare(self, args):
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self.output = ''
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self.setVariableFetchingOptions(args)
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|
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def fromFrameValue(self, nativeValue):
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#DumperBase.warn('FROM FRAME VALUE: %s' % nativeValue.address)
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val = nativeValue
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if self.useDynamicType:
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try:
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val = nativeValue.cast(nativeValue.dynamic_type)
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except:
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pass
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return self.fromNativeValue(val)
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def nativeValueType(self, nativeValue):
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return self.fromNativeType(nativeValue.type)
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def fromNativeValue(self, nativeValue):
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#DumperBase.warn('FROM NATIVE VALUE: %s' % nativeValue)
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self.check(isinstance(nativeValue, gdb.Value))
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nativeType = nativeValue.type
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code = nativeType.code
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if code == gdb.TYPE_CODE_REF:
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targetType = self.fromNativeType(nativeType.target().unqualified())
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val = self.createReferenceValue(toInteger(nativeValue.address), targetType)
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val.nativeValue = nativeValue
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#DumperBase.warn('CREATED REF: %s' % val)
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return val
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if code == gdb.TYPE_CODE_PTR:
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try:
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nativeTargetValue = nativeValue.dereference()
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except:
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nativeTargetValue = None
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targetType = self.fromNativeType(nativeType.target().unqualified())
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val = self.createPointerValue(toInteger(nativeValue), targetType)
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# The nativeValue is needed in case of multiple inheritance, see
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# QTCREATORBUG-17823. Using it triggers nativeValueDereferencePointer()
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# later which
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# is surprisingly expensive.
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val.nativeValue = nativeValue
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#DumperBase.warn('CREATED PTR 1: %s' % val)
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if nativeValue.address is not None:
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val.laddress = toInteger(nativeValue.address)
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#DumperBase.warn('CREATED PTR 2: %s' % val)
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return val
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|
if code == gdb.TYPE_CODE_TYPEDEF:
|
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targetType = nativeType.strip_typedefs().unqualified()
|
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#DumperBase.warn('TARGET TYPE: %s' % targetType)
|
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if targetType.code == gdb.TYPE_CODE_ARRAY:
|
|
val = self.Value(self)
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|
else:
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try:
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# Cast may fail for arrays, for typedefs to __uint128_t with
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# gdb.error: That operation is not available on integers
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# of more than 8 bytes.
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# See test for Bug5799, QTCREATORBUG-18450.
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|
val = self.fromNativeValue(nativeValue.cast(targetType))
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except:
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val = self.Value(self)
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#DumperBase.warn('CREATED TYPEDEF: %s' % val)
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else:
|
|
val = self.Value(self)
|
|
|
|
val.nativeValue = nativeValue
|
|
if nativeValue.address is not None:
|
|
val.laddress = toInteger(nativeValue.address)
|
|
else:
|
|
size = nativeType.sizeof
|
|
chars = self.lookupNativeType('unsigned char')
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|
y = nativeValue.cast(chars.array(0, int(nativeType.sizeof - 1)))
|
|
buf = bytearray(struct.pack('x' * size))
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|
for i in range(size):
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try:
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|
buf[i] = int(y[i])
|
|
except:
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pass
|
|
val.ldata = bytes(buf)
|
|
|
|
val._type = self.fromNativeType(nativeType)
|
|
val.lIsInScope = not nativeValue.is_optimized_out
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|
code = nativeType.code
|
|
if code == gdb.TYPE_CODE_ENUM:
|
|
val.ldisplay = str(nativeValue)
|
|
intval = int(nativeValue)
|
|
if val.ldisplay != intval:
|
|
val.ldisplay += ' (%s)' % intval
|
|
elif code == gdb.TYPE_CODE_COMPLEX:
|
|
val.ldisplay = str(nativeValue)
|
|
elif code in [gdb.TYPE_CODE_BOOL, gdb.TYPE_CODE_INT]:
|
|
try:
|
|
# extract int presentation from native value and remember it
|
|
val.lvalue = int(nativeValue)
|
|
except:
|
|
# GDB only support converting integers of max. 64 bits to Python int as of now
|
|
pass
|
|
#elif code == gdb.TYPE_CODE_ARRAY:
|
|
# val.type.ltarget = nativeValue[0].type.unqualified()
|
|
return val
|
|
|
|
def ptrSize(self):
|
|
result = gdb.lookup_type('void').pointer().sizeof
|
|
self.ptrSize = lambda: result
|
|
return result
|
|
|
|
def fromNativeType(self, nativeType):
|
|
self.check(isinstance(nativeType, gdb.Type))
|
|
code = nativeType.code
|
|
#DumperBase.warn('FROM NATIVE TYPE: %s' % nativeType)
|
|
nativeType = nativeType.unqualified()
|
|
|
|
if code == gdb.TYPE_CODE_PTR:
|
|
#DumperBase.warn('PTR')
|
|
targetType = self.fromNativeType(nativeType.target().unqualified())
|
|
return self.createPointerType(targetType)
|
|
|
|
if code == gdb.TYPE_CODE_REF:
|
|
#DumperBase.warn('REF')
|
|
targetType = self.fromNativeType(nativeType.target().unqualified())
|
|
return self.createReferenceType(targetType)
|
|
|
|
if hasattr(gdb, "TYPE_CODE_RVALUE_REF"):
|
|
if code == gdb.TYPE_CODE_RVALUE_REF:
|
|
#DumperBase.warn('RVALUEREF')
|
|
targetType = self.fromNativeType(nativeType.target())
|
|
return self.createRValueReferenceType(targetType)
|
|
|
|
if code == gdb.TYPE_CODE_ARRAY:
|
|
#DumperBase.warn('ARRAY')
|
|
nativeTargetType = nativeType.target().unqualified()
|
|
targetType = self.fromNativeType(nativeTargetType)
|
|
if nativeType.sizeof == 0:
|
|
# QTCREATORBUG-23998, note that nativeType.name == None here,
|
|
# whereas str(nativeType) returns sth like 'QObject [5]'
|
|
count = self.arrayItemCountFromTypeName(str(nativeType), 1)
|
|
else:
|
|
count = nativeType.sizeof // nativeTargetType.sizeof
|
|
return self.createArrayType(targetType, count)
|
|
|
|
if code == gdb.TYPE_CODE_TYPEDEF:
|
|
#DumperBase.warn('TYPEDEF')
|
|
nativeTargetType = nativeType.unqualified()
|
|
while nativeTargetType.code == gdb.TYPE_CODE_TYPEDEF:
|
|
nativeTargetType = nativeTargetType.strip_typedefs().unqualified()
|
|
targetType = self.fromNativeType(nativeTargetType)
|
|
return self.createTypedefedType(targetType, str(nativeType),
|
|
self.nativeTypeId(nativeType))
|
|
|
|
if code == gdb.TYPE_CODE_ERROR:
|
|
self.warn('Type error: %s' % nativeType)
|
|
return self.Type(self, '')
|
|
|
|
typeId = self.nativeTypeId(nativeType)
|
|
res = self.typeData.get(typeId, None)
|
|
if res is None:
|
|
tdata = self.TypeData(self)
|
|
tdata.name = str(nativeType)
|
|
tdata.typeId = typeId
|
|
tdata.lbitsize = nativeType.sizeof * 8
|
|
tdata.code = {
|
|
#gdb.TYPE_CODE_TYPEDEF : TypeCode.Typedef, # Handled above.
|
|
gdb.TYPE_CODE_METHOD: TypeCode.Function,
|
|
gdb.TYPE_CODE_VOID: TypeCode.Void,
|
|
gdb.TYPE_CODE_FUNC: TypeCode.Function,
|
|
gdb.TYPE_CODE_METHODPTR: TypeCode.Function,
|
|
gdb.TYPE_CODE_MEMBERPTR: TypeCode.Function,
|
|
#gdb.TYPE_CODE_PTR : TypeCode.Pointer, # Handled above.
|
|
#gdb.TYPE_CODE_REF : TypeCode.Reference, # Handled above.
|
|
gdb.TYPE_CODE_BOOL: TypeCode.Integral,
|
|
gdb.TYPE_CODE_CHAR: TypeCode.Integral,
|
|
gdb.TYPE_CODE_INT: TypeCode.Integral,
|
|
gdb.TYPE_CODE_FLT: TypeCode.Float,
|
|
gdb.TYPE_CODE_ENUM: TypeCode.Enum,
|
|
#gdb.TYPE_CODE_ARRAY : TypeCode.Array,
|
|
gdb.TYPE_CODE_STRUCT: TypeCode.Struct,
|
|
gdb.TYPE_CODE_UNION: TypeCode.Struct,
|
|
gdb.TYPE_CODE_COMPLEX: TypeCode.Complex,
|
|
gdb.TYPE_CODE_STRING: TypeCode.FortranString,
|
|
}[code]
|
|
if tdata.code == TypeCode.Enum:
|
|
tdata.enumDisplay = lambda intval, addr, form: \
|
|
self.nativeTypeEnumDisplay(nativeType, intval, form)
|
|
if tdata.code == TypeCode.Struct:
|
|
tdata.lalignment = lambda: \
|
|
self.nativeStructAlignment(nativeType)
|
|
tdata.lfields = lambda value: \
|
|
self.listMembers(value, nativeType)
|
|
tdata.templateArguments = self.listTemplateParameters(nativeType)
|
|
self.registerType(typeId, tdata) # Fix up fields and template args
|
|
# warn('CREATE TYPE: %s' % typeId)
|
|
#else:
|
|
# warn('REUSE TYPE: %s' % typeId)
|
|
return self.Type(self, typeId)
|
|
|
|
def listTemplateParameters(self, nativeType):
|
|
targs = []
|
|
pos = 0
|
|
while True:
|
|
try:
|
|
targ = nativeType.template_argument(pos)
|
|
except:
|
|
break
|
|
if isinstance(targ, gdb.Type):
|
|
targs.append(self.fromNativeType(targ.unqualified()))
|
|
elif isinstance(targ, gdb.Value):
|
|
targs.append(self.fromNativeValue(targ).value())
|
|
else:
|
|
raise RuntimeError('UNKNOWN TEMPLATE PARAMETER')
|
|
pos += 1
|
|
targs2 = self.listTemplateParametersManually(str(nativeType))
|
|
return targs if len(targs) >= len(targs2) else targs2
|
|
|
|
def nativeTypeEnumDisplay(self, nativeType, intval, form):
|
|
try:
|
|
enumerators = []
|
|
for field in nativeType.fields():
|
|
# If we found an exact match, return it immediately
|
|
if field.enumval == intval:
|
|
return field.name + ' (' + (form % intval) + ')'
|
|
enumerators.append((field.name, field.enumval))
|
|
|
|
# No match was found, try to return as flags
|
|
enumerators.sort(key=lambda x: x[1])
|
|
flags = []
|
|
v = intval
|
|
found = False
|
|
for (name, value) in enumerators:
|
|
if v & value != 0:
|
|
flags.append(name)
|
|
v = v & ~value
|
|
found = True
|
|
if not found or v != 0:
|
|
# Leftover value
|
|
flags.append('unknown: %d' % v)
|
|
return '(' + " | ".join(flags) + ') (' + (form % intval) + ')'
|
|
except:
|
|
pass
|
|
return form % intval
|
|
|
|
def nativeTypeId(self, nativeType):
|
|
if nativeType and (nativeType.code == gdb.TYPE_CODE_TYPEDEF):
|
|
return '%s{%s}' % (nativeType, nativeType.strip_typedefs())
|
|
name = str(nativeType)
|
|
if len(name) == 0:
|
|
c = '0'
|
|
elif name == 'union {...}':
|
|
c = 'u'
|
|
elif name.endswith('{...}'):
|
|
c = 's'
|
|
else:
|
|
return name
|
|
typeId = c + ''.join(['{%s:%s}' % (f.name, self.nativeTypeId(f.type))
|
|
for f in nativeType.fields()])
|
|
return typeId
|
|
|
|
def nativeStructAlignment(self, nativeType):
|
|
#DumperBase.warn('NATIVE ALIGN FOR %s' % nativeType.name)
|
|
def handleItem(nativeFieldType, align):
|
|
a = self.fromNativeType(nativeFieldType).alignment()
|
|
return a if a > align else align
|
|
align = 1
|
|
for f in nativeType.fields():
|
|
align = handleItem(f.type, align)
|
|
return align
|
|
|
|
#except:
|
|
# # Happens in the BoostList dumper for a 'const bool'
|
|
# # item named 'constant_time_size'. There isn't anything we can do
|
|
# # in this case.
|
|
# pass
|
|
|
|
#yield value.extractField(field)
|
|
|
|
def memberFromNativeFieldAndValue(self, nativeField, nativeValue, fieldName, value):
|
|
nativeMember = self.nativeMemberFromField(nativeValue, nativeField)
|
|
if nativeMember is None:
|
|
val = self.Value(self)
|
|
val.name = fieldName
|
|
val._type = self.fromNativeType(nativeField.type)
|
|
val.lIsInScope = False
|
|
return val
|
|
val = self.fromNativeValue(nativeMember)
|
|
nativeFieldType = nativeField.type.unqualified()
|
|
if nativeField.bitsize:
|
|
val.lvalue = int(nativeMember)
|
|
val.laddress = None
|
|
fieldType = self.fromNativeType(nativeFieldType)
|
|
val._type = self.createBitfieldType(fieldType, nativeField.bitsize)
|
|
val.isBaseClass = nativeField.is_base_class
|
|
val.name = fieldName
|
|
return val
|
|
|
|
def nativeMemberFromField(self, nativeValue, nativeField):
|
|
if nativeField.is_base_class:
|
|
return nativeValue.cast(nativeField.type)
|
|
try:
|
|
return nativeValue[nativeField]
|
|
except:
|
|
pass
|
|
try:
|
|
return nativeValue[nativeField.name]
|
|
except:
|
|
pass
|
|
return None
|
|
|
|
def listMembers(self, value, nativeType):
|
|
nativeValue = value.nativeValue
|
|
|
|
anonNumber = 0
|
|
|
|
#DumperBase.warn('LISTING FIELDS FOR %s' % nativeType)
|
|
for nativeField in nativeType.fields():
|
|
fieldName = nativeField.name
|
|
# Something without a name.
|
|
# Anonymous union? We need a dummy name to distinguish
|
|
# multiple anonymous unions in the struct.
|
|
# Since GDB commit b5b08fb4 anonymous structs get also reported
|
|
# with a 'None' name.
|
|
if fieldName is None or len(fieldName) == 0:
|
|
# Something without a name.
|
|
# Anonymous union? We need a dummy name to distinguish
|
|
# multiple anonymous unions in the struct.
|
|
anonNumber += 1
|
|
fieldName = '#%s' % anonNumber
|
|
#DumperBase.warn('FIELD: %s' % fieldName)
|
|
# hasattr(nativeField, 'bitpos') == False indicates a static field,
|
|
# but if we have access to a nativeValue .fromNativeField will
|
|
# also succeed. We essentially skip only static members from
|
|
# artificial values, like array members constructed from address.
|
|
if hasattr(nativeField, 'bitpos') or nativeValue is not None:
|
|
yield self.fromNativeField(nativeField, nativeValue, fieldName)
|
|
|
|
def fromNativeField(self, nativeField, nativeValue, fieldName):
|
|
nativeFieldType = nativeField.type.unqualified()
|
|
#DumperBase.warn(' TYPE: %s' % nativeFieldType)
|
|
#DumperBase.warn(' TYPEID: %s' % self.nativeTypeId(nativeFieldType))
|
|
|
|
if hasattr(nativeField, 'bitpos'):
|
|
bitpos = nativeField.bitpos
|
|
else:
|
|
bitpos = 0
|
|
|
|
if hasattr(nativeField, 'bitsize') and nativeField.bitsize != 0:
|
|
bitsize = nativeField.bitsize
|
|
else:
|
|
bitsize = 8 * nativeFieldType.sizeof
|
|
|
|
fieldType = self.fromNativeType(nativeFieldType)
|
|
if bitsize != nativeFieldType.sizeof * 8:
|
|
fieldType = self.createBitfieldType(fieldType, bitsize)
|
|
else:
|
|
fieldType = fieldType
|
|
|
|
if nativeValue is None:
|
|
extractor = None
|
|
else:
|
|
extractor = lambda value, \
|
|
capturedNativeField = nativeField, \
|
|
capturedNativeValue = nativeValue, \
|
|
capturedFieldName = fieldName: \
|
|
self.memberFromNativeFieldAndValue(capturedNativeField,
|
|
capturedNativeValue,
|
|
capturedFieldName,
|
|
value)
|
|
|
|
#DumperBase.warn("FOUND NATIVE FIELD: %s bitpos: %s" % (fieldName, bitpos))
|
|
return self.Field(dumper=self, name=fieldName, isBase=nativeField.is_base_class,
|
|
bitsize=bitsize, bitpos=bitpos, type=fieldType,
|
|
extractor=extractor)
|
|
|
|
def listLocals(self, partialVar):
|
|
frame = gdb.selected_frame()
|
|
|
|
try:
|
|
block = frame.block()
|
|
#DumperBase.warn('BLOCK: %s ' % block)
|
|
except RuntimeError as error:
|
|
#DumperBase.warn('BLOCK IN FRAME NOT ACCESSIBLE: %s' % error)
|
|
return []
|
|
except:
|
|
self.warn('BLOCK NOT ACCESSIBLE FOR UNKNOWN REASONS')
|
|
return []
|
|
|
|
items = []
|
|
shadowed = {}
|
|
while True:
|
|
if block is None:
|
|
self.warn("UNEXPECTED 'None' BLOCK")
|
|
break
|
|
for symbol in block:
|
|
|
|
# Filter out labels etc.
|
|
if symbol.is_variable or symbol.is_argument:
|
|
name = symbol.print_name
|
|
|
|
if name in ('__in_chrg', '__PRETTY_FUNCTION__'):
|
|
continue
|
|
|
|
if partialVar is not None and partialVar != name:
|
|
continue
|
|
|
|
# 'NotImplementedError: Symbol type not yet supported in
|
|
# Python scripts.'
|
|
#DumperBase.warn('SYMBOL %s (%s, %s)): ' % (symbol, name, symbol.name))
|
|
if self.passExceptions and not self.isTesting:
|
|
nativeValue = frame.read_var(name, block)
|
|
value = self.fromFrameValue(nativeValue)
|
|
value.name = name
|
|
#DumperBase.warn('READ 0: %s' % value.stringify())
|
|
items.append(value)
|
|
continue
|
|
|
|
try:
|
|
# Same as above, but for production.
|
|
nativeValue = frame.read_var(name, block)
|
|
value = self.fromFrameValue(nativeValue)
|
|
value.name = name
|
|
#DumperBase.warn('READ 1: %s' % value.stringify())
|
|
items.append(value)
|
|
continue
|
|
except:
|
|
pass
|
|
|
|
try:
|
|
#DumperBase.warn('READ 2: %s' % item.value)
|
|
value = self.fromFrameValue(frame.read_var(name))
|
|
value.name = name
|
|
items.append(value)
|
|
continue
|
|
except:
|
|
# RuntimeError: happens for
|
|
# void foo() { std::string s; std::wstring w; }
|
|
# ValueError: happens for (as of 2010/11/4)
|
|
# a local struct as found e.g. in
|
|
# gcc sources in gcc.c, int execute()
|
|
pass
|
|
|
|
try:
|
|
#DumperBase.warn('READ 3: %s %s' % (name, item.value))
|
|
#DumperBase.warn('ITEM 3: %s' % item.value)
|
|
value = self.fromFrameValue(gdb.parse_and_eval(name))
|
|
value.name = name
|
|
items.append(value)
|
|
except:
|
|
# Can happen in inlined code (see last line of
|
|
# RowPainter::paintChars(): 'RuntimeError:
|
|
# No symbol '__val' in current context.\n'
|
|
pass
|
|
|
|
# The outermost block in a function has the function member
|
|
# FIXME: check whether this is guaranteed.
|
|
if block.function is not None:
|
|
break
|
|
|
|
block = block.superblock
|
|
|
|
return items
|
|
|
|
def reportToken(self, args):
|
|
pass
|
|
|
|
# Hack to avoid QDate* dumper timeouts with GDB 7.4 on 32 bit
|
|
# due to misaligned %ebx in SSE calls (qstring.cpp:findChar)
|
|
# This seems to be fixed in 7.9 (or earlier)
|
|
def canCallLocale(self):
|
|
return self.ptrSize() == 8
|
|
|
|
def fetchVariables(self, args):
|
|
self.resetStats()
|
|
self.prepare(args)
|
|
|
|
self.isBigEndian = gdb.execute('show endian', to_string=True).find('big endian') > 0
|
|
self.packCode = '>' if self.isBigEndian else '<'
|
|
|
|
(ok, res) = self.tryFetchInterpreterVariables(args)
|
|
if ok:
|
|
safePrint(res)
|
|
return
|
|
|
|
self.output += 'data=['
|
|
|
|
partialVar = args.get('partialvar', '')
|
|
isPartial = len(partialVar) > 0
|
|
partialName = partialVar.split('.')[1].split('@')[0] if isPartial else None
|
|
|
|
variables = self.listLocals(partialName)
|
|
#DumperBase.warn('VARIABLES: %s' % variables)
|
|
|
|
# Take care of the return value of the last function call.
|
|
if len(self.resultVarName) > 0:
|
|
try:
|
|
value = self.parseAndEvaluate(self.resultVarName)
|
|
value.name = self.resultVarName
|
|
value.iname = 'return.' + self.resultVarName
|
|
variables.append(value)
|
|
except:
|
|
# Don't bother. It's only supplementary information anyway.
|
|
pass
|
|
|
|
self.handleLocals(variables)
|
|
self.handleWatches(args)
|
|
|
|
self.output += '],typeinfo=['
|
|
for name in self.typesToReport.keys():
|
|
typeobj = self.typesToReport[name]
|
|
# Happens e.g. for '(anonymous namespace)::InsertDefOperation'
|
|
#if not typeobj is None:
|
|
# self.output.append('{name="%s",size="%s"}'
|
|
# % (self.hexencode(name), typeobj.sizeof))
|
|
self.output += ']'
|
|
self.typesToReport = {}
|
|
|
|
if self.forceQtNamespace:
|
|
self.qtNamespaceToReport = self.qtNamespace()
|
|
|
|
if self.qtNamespaceToReport:
|
|
self.output += ',qtnamespace="%s"' % self.qtNamespaceToReport
|
|
self.qtNamespaceToReport = None
|
|
|
|
self.output += ',partial="%d"' % isPartial
|
|
self.output += ',counts=%s' % self.counts
|
|
self.output += ',timings=%s' % self.timings
|
|
self.reportResult(self.output)
|
|
|
|
def parseAndEvaluate(self, exp):
|
|
val = self.nativeParseAndEvaluate(exp)
|
|
return None if val is None else self.fromNativeValue(val)
|
|
|
|
def nativeParseAndEvaluate(self, exp):
|
|
#DumperBase.warn('EVALUATE "%s"' % exp)
|
|
try:
|
|
val = gdb.parse_and_eval(exp)
|
|
return val
|
|
except RuntimeError as error:
|
|
if self.passExceptions:
|
|
self.warn("Cannot evaluate '%s': %s" % (exp, error))
|
|
return None
|
|
|
|
def callHelper(self, rettype, value, function, args):
|
|
if self.isWindowsTarget():
|
|
raise Exception("gdb crashes when calling functions on Windows")
|
|
# args is a tuple.
|
|
arg = ''
|
|
for i in range(len(args)):
|
|
if i:
|
|
arg += ','
|
|
a = args[i]
|
|
if (':' in a) and not ("'" in a):
|
|
arg = "'%s'" % a
|
|
else:
|
|
arg += a
|
|
|
|
#DumperBase.warn('CALL: %s -> %s(%s)' % (value, function, arg))
|
|
typeName = value.type.name
|
|
if typeName.find(':') >= 0:
|
|
typeName = "'" + typeName + "'"
|
|
# 'class' is needed, see http://sourceware.org/bugzilla/show_bug.cgi?id=11912
|
|
#exp = '((class %s*)%s)->%s(%s)' % (typeName, value.laddress, function, arg)
|
|
addr = value.address()
|
|
if addr is None:
|
|
addr = self.pokeValue(value)
|
|
#DumperBase.warn('PTR: %s -> %s(%s)' % (value, function, addr))
|
|
exp = '((%s*)0x%x)->%s(%s)' % (typeName, addr, function, arg)
|
|
#DumperBase.warn('CALL: %s' % exp)
|
|
result = gdb.parse_and_eval(exp)
|
|
#DumperBase.warn(' -> %s' % result)
|
|
res = self.fromNativeValue(result)
|
|
if value.address() is None:
|
|
self.releaseValue(addr)
|
|
return res
|
|
|
|
def makeExpression(self, value):
|
|
typename = '::' + value.type.name
|
|
#DumperBase.warn(' TYPE: %s' % typename)
|
|
exp = '(*(%s*)(0x%x))' % (typename, value.address())
|
|
#DumperBase.warn(' EXP: %s' % exp)
|
|
return exp
|
|
|
|
def makeStdString(init):
|
|
# Works only for small allocators, but they are usually empty.
|
|
gdb.execute('set $d=(std::string*)calloc(sizeof(std::string), 2)')
|
|
gdb.execute('call($d->basic_string("' + init +
|
|
'",*(std::allocator<char>*)(1+$d)))')
|
|
value = gdb.parse_and_eval('$d').dereference()
|
|
return value
|
|
|
|
def pokeValue(self, value):
|
|
# Allocates inferior memory and copies the contents of value.
|
|
# Returns a pointer to the copy.
|
|
# Avoid malloc symbol clash with QVector
|
|
size = value.type.size()
|
|
data = value.data()
|
|
h = self.hexencode(data)
|
|
#DumperBase.warn('DATA: %s' % h)
|
|
string = ''.join('\\x' + h[2 * i:2 * i + 2] for i in range(size))
|
|
exp = '(%s*)memcpy(calloc(%d, 1), "%s", %d)' \
|
|
% (value.type.name, size, string, size)
|
|
#DumperBase.warn('EXP: %s' % exp)
|
|
res = gdb.parse_and_eval(exp)
|
|
#DumperBase.warn('RES: %s' % res)
|
|
return toInteger(res)
|
|
|
|
def releaseValue(self, address):
|
|
gdb.parse_and_eval('free(0x%x)' % address)
|
|
|
|
def setValue(self, address, typename, value):
|
|
cmd = 'set {%s}%s=%s' % (typename, address, value)
|
|
gdb.execute(cmd)
|
|
|
|
def setValues(self, address, typename, values):
|
|
cmd = 'set {%s[%s]}%s={%s}' \
|
|
% (typename, len(values), address, ','.join(map(str, values)))
|
|
gdb.execute(cmd)
|
|
|
|
def selectedInferior(self):
|
|
try:
|
|
# gdb.Inferior is new in gdb 7.2
|
|
self.cachedInferior = gdb.selected_inferior()
|
|
except:
|
|
# Pre gdb 7.4. Right now we don't have more than one inferior anyway.
|
|
self.cachedInferior = gdb.inferiors()[0]
|
|
|
|
# Memoize result.
|
|
self.selectedInferior = lambda: self.cachedInferior
|
|
return self.cachedInferior
|
|
|
|
def readRawMemory(self, address, size):
|
|
#DumperBase.warn('READ: %s FROM 0x%x' % (size, address))
|
|
if address == 0 or size == 0:
|
|
return bytes()
|
|
res = self.selectedInferior().read_memory(address, size)
|
|
return res
|
|
|
|
def findStaticMetaObject(self, type):
|
|
symbolName = type.name + '::staticMetaObject'
|
|
symbol = gdb.lookup_global_symbol(symbolName, gdb.SYMBOL_VAR_DOMAIN)
|
|
if not symbol:
|
|
return 0
|
|
try:
|
|
# Older GDB ~7.4 don't have gdb.Symbol.value()
|
|
return toInteger(symbol.value().address)
|
|
except:
|
|
pass
|
|
|
|
address = gdb.parse_and_eval("&'%s'" % symbolName)
|
|
return toInteger(address)
|
|
|
|
def isArmArchitecture(self):
|
|
return 'arm' in gdb.TARGET_CONFIG.lower()
|
|
|
|
def isQnxTarget(self):
|
|
return 'qnx' in gdb.TARGET_CONFIG.lower()
|
|
|
|
def isWindowsTarget(self):
|
|
# We get i686-w64-mingw32
|
|
return 'mingw' in gdb.TARGET_CONFIG.lower()
|
|
|
|
def isMsvcTarget(self):
|
|
return False
|
|
|
|
def prettySymbolByAddress(self, address):
|
|
try:
|
|
return str(gdb.parse_and_eval('(void(*))0x%x' % address))
|
|
except:
|
|
return '0x%x' % address
|
|
|
|
def qtVersionString(self):
|
|
try:
|
|
return str(gdb.lookup_symbol('qVersion')[0].value()())
|
|
except:
|
|
pass
|
|
try:
|
|
ns = self.qtNamespace()
|
|
return str(gdb.parse_and_eval("((const char*(*)())'%sqVersion')()" % ns))
|
|
except:
|
|
pass
|
|
return None
|
|
|
|
def qtVersion(self):
|
|
try:
|
|
# Only available with Qt 5.3+
|
|
qtversion = int(str(gdb.parse_and_eval('((void**)&qtHookData)[2]')), 16)
|
|
self.qtVersion = lambda: qtversion
|
|
return qtversion
|
|
except:
|
|
pass
|
|
|
|
try:
|
|
version = self.qtVersionString()
|
|
(major, minor, patch) = version[version.find('"') + 1:version.rfind('"')].split('.')
|
|
qtversion = 0x10000 * int(major) + 0x100 * int(minor) + int(patch)
|
|
self.qtVersion = lambda: qtversion
|
|
return qtversion
|
|
except:
|
|
# Use fallback until we have a better answer.
|
|
return self.fallbackQtVersion
|
|
|
|
def createSpecialBreakpoints(self, args):
|
|
self.specialBreakpoints = []
|
|
|
|
def newSpecial(spec):
|
|
# GDB < 8.1 does not have the 'qualified' parameter here,
|
|
# GDB >= 8.1 applies some generous pattern matching, hitting
|
|
# e.g. also Foo::abort() when asking for '::abort'
|
|
class Pre81SpecialBreakpoint(gdb.Breakpoint):
|
|
def __init__(self, spec):
|
|
super(Pre81SpecialBreakpoint, self).__init__(spec,
|
|
gdb.BP_BREAKPOINT, internal=True)
|
|
self.spec = spec
|
|
|
|
def stop(self):
|
|
print("Breakpoint on '%s' hit." % self.spec)
|
|
return True
|
|
|
|
class SpecialBreakpoint(gdb.Breakpoint):
|
|
def __init__(self, spec):
|
|
super(SpecialBreakpoint, self).__init__(spec,
|
|
gdb.BP_BREAKPOINT,
|
|
internal=True,
|
|
qualified=True)
|
|
self.spec = spec
|
|
|
|
def stop(self):
|
|
print("Breakpoint on '%s' hit." % self.spec)
|
|
return True
|
|
|
|
try:
|
|
return SpecialBreakpoint(spec)
|
|
except:
|
|
return Pre81SpecialBreakpoint(spec)
|
|
|
|
# FIXME: ns is accessed too early. gdb.Breakpoint() has no
|
|
# 'rbreak' replacement, and breakpoints created with
|
|
# 'gdb.execute('rbreak...') cannot be made invisible.
|
|
# So let's ignore the existing of namespaced builds for this
|
|
# fringe feature here for now.
|
|
ns = self.qtNamespace()
|
|
if args.get('breakonabort', 0):
|
|
self.specialBreakpoints.append(newSpecial('abort'))
|
|
|
|
if args.get('breakonwarning', 0):
|
|
self.specialBreakpoints.append(newSpecial(ns + 'qWarning'))
|
|
self.specialBreakpoints.append(newSpecial(ns + 'QMessageLogger::warning'))
|
|
|
|
if args.get('breakonfatal', 0):
|
|
self.specialBreakpoints.append(newSpecial(ns + 'qFatal'))
|
|
self.specialBreakpoints.append(newSpecial(ns + 'QMessageLogger::fatal'))
|
|
|
|
#def threadname(self, maximalStackDepth, objectPrivateType):
|
|
# e = gdb.selected_frame()
|
|
# out = ''
|
|
# ns = self.qtNamespace()
|
|
# while True:
|
|
# maximalStackDepth -= 1
|
|
# if maximalStackDepth < 0:
|
|
# break
|
|
# e = e.older()
|
|
# if e == None or e.name() == None:
|
|
# break
|
|
# if e.name() in (ns + 'QThreadPrivate::start', '_ZN14QThreadPrivate5startEPv@4'):
|
|
# try:
|
|
# thrptr = e.read_var('thr').dereference()
|
|
# d_ptr = thrptr['d_ptr']['d'].cast(objectPrivateType).dereference()
|
|
# try:
|
|
# objectName = d_ptr['objectName']
|
|
# except: # Qt 5
|
|
# p = d_ptr['extraData']
|
|
# if not self.isNull(p):
|
|
# objectName = p.dereference()['objectName']
|
|
# if not objectName is None:
|
|
# (data, size, alloc) = self.stringData(objectName)
|
|
# if size > 0:
|
|
# s = self.readMemory(data, 2 * size)
|
|
#
|
|
# thread = gdb.selected_thread()
|
|
# inner = '{valueencoded="uf16:2:0",id="'
|
|
# inner += str(thread.num) + '",value="'
|
|
# inner += s
|
|
# #inner += self.encodeString(objectName)
|
|
# inner += '"},'
|
|
#
|
|
# out += inner
|
|
# except:
|
|
# pass
|
|
# return out
|
|
|
|
def threadnames(self, maximalStackDepth):
|
|
# FIXME: This needs a proper implementation for MinGW, and only there.
|
|
# Linux, Mac and QNX mirror the objectName() to the underlying threads,
|
|
# so we get the names already as part of the -thread-info output.
|
|
return '[]'
|
|
#out = '['
|
|
#oldthread = gdb.selected_thread()
|
|
#if oldthread:
|
|
# try:
|
|
# objectPrivateType = gdb.lookup_type(ns + 'QObjectPrivate').pointer()
|
|
# inferior = self.selectedInferior()
|
|
# for thread in inferior.threads():
|
|
# thread.switch()
|
|
# out += self.threadname(maximalStackDepth, objectPrivateType)
|
|
# except:
|
|
# pass
|
|
# oldthread.switch()
|
|
#return out + ']'
|
|
|
|
def importPlainDumper(self, printer):
|
|
name = printer.name.replace('::', '__')
|
|
self.qqDumpers[name] = PlainDumper(printer)
|
|
self.qqFormats[name] = ''
|
|
|
|
def importPlainDumpersForObj(self, obj):
|
|
for printers in obj.pretty_printers + gdb.pretty_printers:
|
|
for printer in printers.subprinters:
|
|
self.importPlainDumper(printer)
|
|
|
|
def importPlainDumpers(self):
|
|
for obj in gdb.objfiles():
|
|
self.importPlainDumpersForObj(obj)
|
|
|
|
def qtNamespace(self):
|
|
# This function is replaced by handleQtCoreLoaded()
|
|
return ''
|
|
|
|
def findSymbol(self, symbolName):
|
|
try:
|
|
return toInteger(gdb.parse_and_eval("(size_t)&'%s'" % symbolName))
|
|
except:
|
|
return 0
|
|
|
|
def handleNewObjectFile(self, objfile):
|
|
name = objfile.filename
|
|
if self.isWindowsTarget():
|
|
qtCoreMatch = re.match(r'.*Qt[56]?Core[^/.]*d?\.dll', name)
|
|
else:
|
|
qtCoreMatch = re.match(r'.*/libQt[56]?Core[^/.]*\.so', name)
|
|
|
|
if qtCoreMatch is not None:
|
|
self.addDebugLibs(objfile)
|
|
self.handleQtCoreLoaded(objfile)
|
|
|
|
if self.usePlainDumpers:
|
|
self.importPlainDumpersForObj(objfile)
|
|
|
|
def addDebugLibs(self, objfile):
|
|
# The directory where separate debug symbols are searched for
|
|
# is "/usr/lib/debug".
|
|
try:
|
|
cooked = gdb.execute('show debug-file-directory', to_string=True)
|
|
clean = cooked.split('"')[1]
|
|
newdir = '/'.join(objfile.filename.split('/')[:-1])
|
|
gdb.execute('set debug-file-directory %s:%s' % (clean, newdir))
|
|
except:
|
|
pass
|
|
|
|
def handleQtCoreLoaded(self, objfile):
|
|
fd, tmppath = tempfile.mkstemp()
|
|
os.close(fd)
|
|
try:
|
|
cmd = 'maint print msymbols -objfile "%s" -- %s' % (objfile.filename, tmppath)
|
|
symbols = gdb.execute(cmd, to_string=True)
|
|
except:
|
|
try:
|
|
# command syntax depends on gdb version - below is gdb < 8
|
|
cmd = 'maint print msymbols %s "%s"' % (tmppath, objfile.filename)
|
|
symbols = gdb.execute(cmd, to_string=True)
|
|
except:
|
|
pass
|
|
ns = ''
|
|
with open(tmppath) as f:
|
|
for line in f:
|
|
if line.find('msgHandlerGrabbed ') >= 0:
|
|
# [11] b 0x7ffff683c000 _ZN4MynsL17msgHandlerGrabbedE
|
|
# section .tbss Myns::msgHandlerGrabbed qlogging.cpp
|
|
ns = re.split(r'_ZN?(\d*)(\w*)L17msgHandlerGrabbedE? ', line)[2]
|
|
if len(ns):
|
|
ns += '::'
|
|
break
|
|
if line.find('currentThreadData ') >= 0:
|
|
# [ 0] b 0x7ffff67d3000 _ZN2UUL17currentThreadDataE
|
|
# section .tbss UU::currentThreadData qthread_unix.cpp\\n
|
|
ns = re.split(r'_ZN?(\d*)(\w*)L17currentThreadDataE? ', line)[2]
|
|
if len(ns):
|
|
ns += '::'
|
|
break
|
|
os.remove(tmppath)
|
|
|
|
lenns = len(ns)
|
|
strns = ('%d%s' % (lenns - 2, ns[:lenns - 2])) if lenns else ''
|
|
|
|
if lenns:
|
|
# This might be wrong, but we can't do better: We found
|
|
# a libQt5Core and could not extract a namespace.
|
|
# The best guess is that there isn't any.
|
|
self.qtNamespaceToReport = ns
|
|
self.qtNamespace = lambda: ns
|
|
|
|
sym = '_ZN%s7QObject11customEventEPNS_6QEventE' % strns
|
|
else:
|
|
sym = '_ZN7QObject11customEventEP6QEvent'
|
|
self.qtCustomEventFunc = self.findSymbol(sym)
|
|
|
|
sym += '@plt'
|
|
self.qtCustomEventPltFunc = self.findSymbol(sym)
|
|
|
|
sym = '_ZNK%s7QObject8propertyEPKc' % strns
|
|
if not self.isWindowsTarget(): # prevent calling the property function on windows
|
|
self.qtPropertyFunc = self.findSymbol(sym)
|
|
|
|
def assignValue(self, args):
|
|
typeName = self.hexdecode(args['type'])
|
|
expr = self.hexdecode(args['expr'])
|
|
value = self.hexdecode(args['value'])
|
|
simpleType = int(args['simpleType'])
|
|
ns = self.qtNamespace()
|
|
if typeName.startswith(ns):
|
|
typeName = typeName[len(ns):]
|
|
typeName = typeName.replace('::', '__')
|
|
pos = typeName.find('<')
|
|
if pos != -1:
|
|
typeName = typeName[0:pos]
|
|
if typeName in self.qqEditable and not simpleType:
|
|
#self.qqEditable[typeName](self, expr, value)
|
|
expr = self.parseAndEvaluate(expr)
|
|
self.qqEditable[typeName](self, expr, value)
|
|
else:
|
|
cmd = 'set variable (%s)=%s' % (expr, value)
|
|
gdb.execute(cmd)
|
|
|
|
def appendSolibSearchPath(self, args):
|
|
new = list(map(self.hexdecode, args['path']))
|
|
old = [gdb.parameter('solib-search-path')]
|
|
gdb.execute('set solib-search-path %s' % args['separator'].join(old + new))
|
|
|
|
def watchPoint(self, args):
|
|
self.reportToken(args)
|
|
ns = self.qtNamespace()
|
|
lenns = len(ns)
|
|
strns = ('%d%s' % (lenns - 2, ns[:lenns - 2])) if lenns else ''
|
|
sym = '_ZN%s12QApplication8widgetAtEii' % strns
|
|
expr = '%s(%s,%s)' % (sym, args['x'], args['y'])
|
|
res = self.parseAndEvaluate(expr)
|
|
p = 0 if res is None else res.pointer()
|
|
n = ("'%sQWidget'" % ns) if lenns else 'QWidget'
|
|
self.reportResult('selected="0x%x",expr="(%s*)0x%x"' % (p, n, p), args)
|
|
|
|
def nativeValueDereferencePointer(self, value):
|
|
# This is actually pretty expensive, up to 100ms.
|
|
deref = value.nativeValue.dereference()
|
|
if self.useDynamicType:
|
|
deref = deref.cast(deref.dynamic_type)
|
|
return self.fromNativeValue(deref)
|
|
|
|
def nativeValueDereferenceReference(self, value):
|
|
nativeValue = value.nativeValue
|
|
return self.fromNativeValue(nativeValue.cast(nativeValue.type.target()))
|
|
|
|
def nativeDynamicTypeName(self, address, baseType):
|
|
# Needed for Gdb13393 test.
|
|
nativeType = self.lookupNativeType(baseType.name)
|
|
if nativeType is None:
|
|
return None
|
|
nativeTypePointer = nativeType.pointer()
|
|
nativeValue = gdb.Value(address).cast(nativeTypePointer).dereference()
|
|
val = nativeValue.cast(nativeValue.dynamic_type)
|
|
return str(val.type)
|
|
#try:
|
|
# vtbl = gdb.execute('info symbol {%s*}0x%x' % (baseType.name, address), to_string = True)
|
|
#except:
|
|
# return None
|
|
#pos1 = vtbl.find('vtable ')
|
|
#if pos1 == -1:
|
|
# return None
|
|
#pos1 += 11
|
|
#pos2 = vtbl.find(' +', pos1)
|
|
#if pos2 == -1:
|
|
# return None
|
|
#return vtbl[pos1 : pos2]
|
|
|
|
def nativeDynamicType(self, address, baseType):
|
|
# Needed for Gdb13393 test.
|
|
nativeType = self.lookupNativeType(baseType.name)
|
|
if nativeType is None:
|
|
return baseType
|
|
nativeTypePointer = nativeType.pointer()
|
|
nativeValue = gdb.Value(address).cast(nativeTypePointer).dereference()
|
|
return self.fromNativeType(nativeValue.dynamic_type)
|
|
|
|
def enumExpression(self, enumType, enumValue):
|
|
return self.qtNamespace() + 'Qt::' + enumValue
|
|
|
|
def lookupNativeType(self, typeName):
|
|
nativeType = self.lookupNativeTypeHelper(typeName)
|
|
if nativeType is not None:
|
|
self.check(isinstance(nativeType, gdb.Type))
|
|
return nativeType
|
|
|
|
def lookupNativeTypeHelper(self, typeName):
|
|
typeobj = self.typeCache.get(typeName)
|
|
#DumperBase.warn('LOOKUP 1: %s -> %s' % (typeName, typeobj))
|
|
if typeobj is not None:
|
|
return typeobj
|
|
|
|
if typeName == 'void':
|
|
typeobj = gdb.lookup_type(typeName)
|
|
self.typeCache[typeName] = typeobj
|
|
self.typesToReport[typeName] = typeobj
|
|
return typeobj
|
|
|
|
#try:
|
|
# typeobj = gdb.parse_and_eval('{%s}&main' % typeName).typeobj
|
|
# if not typeobj is None:
|
|
# self.typeCache[typeName] = typeobj
|
|
# self.typesToReport[typeName] = typeobj
|
|
# return typeobj
|
|
#except:
|
|
# pass
|
|
|
|
# See http://sourceware.org/bugzilla/show_bug.cgi?id=13269
|
|
# gcc produces '{anonymous}', gdb '(anonymous namespace)'
|
|
# '<unnamed>' has been seen too. The only thing gdb
|
|
# understands when reading things back is '(anonymous namespace)'
|
|
if typeName.find('{anonymous}') != -1:
|
|
ts = typeName
|
|
ts = ts.replace('{anonymous}', '(anonymous namespace)')
|
|
typeobj = self.lookupNativeType(ts)
|
|
if typeobj is not None:
|
|
self.typeCache[typeName] = typeobj
|
|
self.typesToReport[typeName] = typeobj
|
|
return typeobj
|
|
|
|
#DumperBase.warn(" RESULT FOR 7.2: '%s': %s" % (typeName, typeobj))
|
|
|
|
# This part should only trigger for
|
|
# gdb 7.1 for types with namespace separators.
|
|
# And anonymous namespaces.
|
|
|
|
ts = typeName
|
|
while True:
|
|
if ts.startswith('class '):
|
|
ts = ts[6:]
|
|
elif ts.startswith('struct '):
|
|
ts = ts[7:]
|
|
elif ts.startswith('const '):
|
|
ts = ts[6:]
|
|
elif ts.startswith('volatile '):
|
|
ts = ts[9:]
|
|
elif ts.startswith('enum '):
|
|
ts = ts[5:]
|
|
elif ts.endswith(' const'):
|
|
ts = ts[:-6]
|
|
elif ts.endswith(' volatile'):
|
|
ts = ts[:-9]
|
|
elif ts.endswith('*const'):
|
|
ts = ts[:-5]
|
|
elif ts.endswith('*volatile'):
|
|
ts = ts[:-8]
|
|
else:
|
|
break
|
|
|
|
if ts.endswith('*'):
|
|
typeobj = self.lookupNativeType(ts[0:-1])
|
|
if typeobj is not None:
|
|
typeobj = typeobj.pointer()
|
|
self.typeCache[typeName] = typeobj
|
|
self.typesToReport[typeName] = typeobj
|
|
return typeobj
|
|
|
|
try:
|
|
#DumperBase.warn("LOOKING UP 1 '%s'" % ts)
|
|
typeobj = gdb.lookup_type(ts)
|
|
except RuntimeError as error:
|
|
#DumperBase.warn("LOOKING UP 2 '%s' ERROR %s" % (ts, error))
|
|
# See http://sourceware.org/bugzilla/show_bug.cgi?id=11912
|
|
exp = "(class '%s'*)0" % ts
|
|
try:
|
|
typeobj = self.parse_and_eval(exp).type.target()
|
|
#DumperBase.warn("LOOKING UP 3 '%s'" % typeobj)
|
|
except:
|
|
# Can throw 'RuntimeError: No type named class Foo.'
|
|
pass
|
|
except:
|
|
#DumperBase.warn("LOOKING UP '%s' FAILED" % ts)
|
|
pass
|
|
|
|
if typeobj is not None:
|
|
#DumperBase.warn('CACHING: %s' % typeobj)
|
|
self.typeCache[typeName] = typeobj
|
|
self.typesToReport[typeName] = typeobj
|
|
|
|
# This could still be None as gdb.lookup_type('char[3]') generates
|
|
# 'RuntimeError: No type named char[3]'
|
|
#self.typeCache[typeName] = typeobj
|
|
#self.typesToReport[typeName] = typeobj
|
|
return typeobj
|
|
|
|
def doContinue(self):
|
|
gdb.execute('continue')
|
|
|
|
def fetchStack(self, args):
|
|
|
|
def fromNativePath(string):
|
|
return string.replace('\\', '/')
|
|
|
|
extraQml = int(args.get('extraqml', '0'))
|
|
limit = int(args['limit'])
|
|
if limit <= 0:
|
|
limit = 10000
|
|
|
|
self.prepare(args)
|
|
self.output = ''
|
|
|
|
i = 0
|
|
if extraQml:
|
|
frame = gdb.newest_frame()
|
|
ns = self.qtNamespace()
|
|
needle = self.qtNamespace() + 'QV4::ExecutionEngine'
|
|
pats = [
|
|
'{0}qt_v4StackTraceForEngine((void*)0x{1:x})',
|
|
'{0}qt_v4StackTrace((({0}QV4::ExecutionEngine *)0x{1:x})->currentContext())',
|
|
'{0}qt_v4StackTrace((({0}QV4::ExecutionEngine *)0x{1:x})->currentContext)',
|
|
]
|
|
done = False
|
|
while i < limit and frame and not done:
|
|
block = None
|
|
try:
|
|
block = frame.block()
|
|
except:
|
|
pass
|
|
if block is not None:
|
|
for symbol in block:
|
|
if symbol.is_variable or symbol.is_argument:
|
|
value = symbol.value(frame)
|
|
typeobj = value.type
|
|
if typeobj.code == gdb.TYPE_CODE_PTR:
|
|
dereftype = typeobj.target().unqualified()
|
|
if dereftype.name == needle:
|
|
addr = toInteger(value)
|
|
res = None
|
|
for pat in pats:
|
|
try:
|
|
expr = pat.format(ns, addr)
|
|
res = str(gdb.parse_and_eval(expr))
|
|
break
|
|
except:
|
|
continue
|
|
|
|
if res is None:
|
|
done = True
|
|
break
|
|
|
|
pos = res.find('"stack=[')
|
|
if pos != -1:
|
|
res = res[pos + 8:-2]
|
|
res = res.replace('\\\"', '\"')
|
|
res = res.replace('func=', 'function=')
|
|
self.put(res)
|
|
done = True
|
|
break
|
|
frame = frame.older()
|
|
i += 1
|
|
|
|
frame = gdb.newest_frame()
|
|
self.currentCallContext = None
|
|
while i < limit and frame:
|
|
with OutputSaver(self):
|
|
name = frame.name()
|
|
functionName = '??' if name is None else name
|
|
fileName = ''
|
|
objfile = ''
|
|
symtab = ''
|
|
pc = frame.pc()
|
|
sal = frame.find_sal()
|
|
line = -1
|
|
if sal:
|
|
line = sal.line
|
|
symtab = sal.symtab
|
|
if symtab is not None:
|
|
objfile = fromNativePath(symtab.objfile.filename)
|
|
fullname = symtab.fullname()
|
|
if fullname is None:
|
|
fileName = ''
|
|
else:
|
|
fileName = fromNativePath(fullname)
|
|
|
|
if self.nativeMixed and functionName == 'qt_qmlDebugMessageAvailable':
|
|
interpreterStack = self.extractInterpreterStack()
|
|
#print('EXTRACTED INTEPRETER STACK: %s' % interpreterStack)
|
|
for interpreterFrame in interpreterStack.get('frames', []):
|
|
function = interpreterFrame.get('function', '')
|
|
fileName = interpreterFrame.get('file', '')
|
|
language = interpreterFrame.get('language', '')
|
|
lineNumber = interpreterFrame.get('line', 0)
|
|
context = interpreterFrame.get('context', 0)
|
|
|
|
self.put(('frame={function="%s",file="%s",'
|
|
'line="%s",language="%s",context="%s"}')
|
|
% (function, self.hexencode(fileName), lineNumber, language, context))
|
|
|
|
if False and self.isInternalInterpreterFrame(functionName):
|
|
frame = frame.older()
|
|
self.put(('frame={address="0x%x",function="%s",'
|
|
'file="%s",line="%s",'
|
|
'module="%s",language="c",usable="0"}') %
|
|
(pc, functionName, fileName, line, objfile))
|
|
i += 1
|
|
frame = frame.older()
|
|
continue
|
|
|
|
self.put(('frame={level="%s",address="0x%x",function="%s",'
|
|
'file="%s",line="%s",module="%s",language="c"}') %
|
|
(i, pc, functionName, fileName, line, objfile))
|
|
|
|
frame = frame.older()
|
|
i += 1
|
|
self.reportResult('stack={frames=[' + self.output + ']}')
|
|
|
|
def createResolvePendingBreakpointsHookBreakpoint(self, args):
|
|
class Resolver(gdb.Breakpoint):
|
|
def __init__(self, dumper, args):
|
|
self.dumper = dumper
|
|
self.args = args
|
|
spec = 'qt_qmlDebugConnectorOpen'
|
|
super(Resolver, self).\
|
|
__init__(spec, gdb.BP_BREAKPOINT, internal=True, temporary=False)
|
|
|
|
def stop(self):
|
|
self.dumper.resolvePendingInterpreterBreakpoint(args)
|
|
self.enabled = False
|
|
return False
|
|
|
|
self.interpreterBreakpointResolvers.append(Resolver(self, args))
|
|
|
|
def exitGdb(self, _):
|
|
gdb.execute('quit')
|
|
|
|
def reportResult(self, result, args={}):
|
|
print('result={token="%s",%s}' % (args.get("token", 0), result))
|
|
|
|
def profile1(self, args):
|
|
'''Internal profiling'''
|
|
import cProfile
|
|
tempDir = tempfile.gettempdir() + '/bbprof'
|
|
cProfile.run('theDumper.fetchVariables(%s)' % args, tempDir)
|
|
import pstats
|
|
pstats.Stats(tempDir).sort_stats('time').print_stats()
|
|
|
|
def profile2(self, args):
|
|
import timeit
|
|
print(timeit.repeat('theDumper.fetchVariables(%s)' % args,
|
|
'from __main__ import theDumper', number=10))
|
|
|
|
def tracepointModified(self, tp):
|
|
self.tpExpressions = {}
|
|
self.tpExpressionWarnings = []
|
|
s = self.resultToMi(tp.dicts())
|
|
def handler():
|
|
print("tracepointmodified=%s" % s)
|
|
gdb.post_event(handler)
|
|
|
|
def tracepointHit(self, tp, result):
|
|
expressions = '{' + ','.join(["%s=%s" % (k,v) for k,v in self.tpExpressions.items()]) + '}'
|
|
warnings = []
|
|
if 'warning' in result.keys():
|
|
warnings.append(result.pop('warning'))
|
|
warnings += self.tpExpressionWarnings
|
|
r = self.resultToMi(result)
|
|
w = self.resultToMi(warnings)
|
|
def handler():
|
|
print("tracepointhit={result=%s,expressions=%s,warnings=%s}" % (r, expressions, w))
|
|
gdb.post_event(handler)
|
|
|
|
def tracepointExpression(self, tp, expression, value, args):
|
|
key = "x" + str(len(self.tpExpressions))
|
|
if (isinstance(value, gdb.Value)):
|
|
try:
|
|
val = self.fromNativeValue(value)
|
|
self.prepare(args)
|
|
with TopLevelItem(self, expression):
|
|
self.putItem(val)
|
|
self.tpExpressions[key] = self.output
|
|
except Exception as e:
|
|
self.tpExpressions[key] = '"<N/A>"'
|
|
self.tpExpressionWarnings.append(str(e))
|
|
elif (isinstance(value, Exception)):
|
|
self.tpExpressions[key] = '"<N/A>"'
|
|
self.tpExpressionWarnings.append(str(value))
|
|
else:
|
|
self.tpExpressions[key] = '"<N/A>"'
|
|
self.tpExpressionWarnings.append('Unknown expression value type')
|
|
return key
|
|
|
|
def createTracepoint(self, args):
|
|
"""
|
|
Creates a tracepoint
|
|
"""
|
|
tp = GDBTracepoint.create(args,
|
|
onModified=self.tracepointModified,
|
|
onHit=self.tracepointHit,
|
|
onExpression=lambda tp, expr, val: self.tracepointExpression(tp, expr, val, args))
|
|
self.reportResult("tracepoint=%s" % self.resultToMi(tp.dicts()), args)
|
|
class CliDumper(Dumper):
|
|
def __init__(self):
|
|
Dumper.__init__(self)
|
|
self.childrenPrefix = '['
|
|
self.chidrenSuffix = '] '
|
|
self.indent = 0
|
|
self.isCli = True
|
|
self.setupDumpers({})
|
|
|
|
def put(self, line):
|
|
if self.output.endswith('\n'):
|
|
self.output = self.output[0:-1]
|
|
self.output += line
|
|
|
|
def putNumChild(self, numchild):
|
|
pass
|
|
|
|
def putOriginalAddress(self, address):
|
|
pass
|
|
|
|
def fetchVariable(self, line):
|
|
# HACK: Currently, the response to the QtCore loading is completely
|
|
# eaten by theDumper, so copy the results here. Better would be
|
|
# some shared component.
|
|
self.qtCustomEventFunc = theDumper.qtCustomEventFunc
|
|
self.qtCustomEventPltFunc = theDumper.qtCustomEventPltFunc
|
|
self.qtPropertyFunc = theDumper.qtPropertyFunc
|
|
|
|
names = line.split(' ')
|
|
name = names[0]
|
|
|
|
toExpand = set()
|
|
for n in names:
|
|
while n:
|
|
toExpand.add(n)
|
|
n = n[0:n.rfind('.')]
|
|
|
|
args = {}
|
|
args['fancy'] = 1
|
|
args['passexceptions'] = 1
|
|
args['autoderef'] = 1
|
|
args['qobjectnames'] = 1
|
|
args['varlist'] = name
|
|
args['expanded'] = toExpand
|
|
self.expandableINames = set()
|
|
self.prepare(args)
|
|
|
|
self.output = name + ' = '
|
|
value = self.parseAndEvaluate(name)
|
|
with TopLevelItem(self, name):
|
|
self.putItem(value)
|
|
|
|
if not self.expandableINames:
|
|
return self.output + '\n\nNo drill down available.\n'
|
|
|
|
pattern = ' pp ' + name + ' ' + '%s'
|
|
return (self.output
|
|
+ '\n\nDrill down:\n '
|
|
+ '\n '.join(pattern % x for x in self.expandableINames)
|
|
+ '\n')
|
|
|
|
|
|
# Global instances.
|
|
theDumper = Dumper()
|
|
theCliDumper = CliDumper()
|
|
|
|
|
|
######################################################################
|
|
#
|
|
# ThreadNames Command
|
|
#
|
|
#######################################################################
|
|
|
|
def threadnames(arg):
|
|
return theDumper.threadnames(int(arg))
|
|
|
|
|
|
registerCommand('threadnames', threadnames)
|
|
|
|
#######################################################################
|
|
#
|
|
# Native Mixed
|
|
#
|
|
#######################################################################
|
|
|
|
|
|
class InterpreterMessageBreakpoint(gdb.Breakpoint):
|
|
def __init__(self):
|
|
spec = 'qt_qmlDebugMessageAvailable'
|
|
super(InterpreterMessageBreakpoint, self).\
|
|
__init__(spec, gdb.BP_BREAKPOINT, internal=True)
|
|
|
|
def stop(self):
|
|
print('Interpreter event received.')
|
|
return theDumper.handleInterpreterMessage()
|
|
|
|
|
|
#######################################################################
|
|
#
|
|
# Shared objects
|
|
#
|
|
#######################################################################
|
|
|
|
def new_objfile_handler(event):
|
|
return theDumper.handleNewObjectFile(event.new_objfile)
|
|
|
|
|
|
gdb.events.new_objfile.connect(new_objfile_handler)
|
|
|
|
|
|
#InterpreterMessageBreakpoint()
|