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qt-creator/share/qtcreator/debugger/dumper.py
David Schulz b245912b56 Debugger: merge put array code from cdbbridge into dumper base 
Basically the same. Only the type lookup of the inner type needs to be
avoided for performance reasons.

Change-Id: I2747ab44c23b764482b4a063d3618fae2e3c4d46
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
2024-06-28 13:22:17 +00:00

4336 lines
171 KiB
Python
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# Copyright (C) 2016 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
import os
import codecs
import functools
import glob
import struct
import sys
import re
import time
import inspect
from utils import DisplayFormat, TypeCode
try:
# That's only used in native combined debugging right now, so
# we do not need to hard fail in cases of partial python installation
# that will never use this.
import json
except:
print("Python module json not found. "
"Native combined debugging might not work.")
pass
try:
# That fails on some QNX via Windows installations
import base64
def hexencode_(s):
return base64.b16encode(s).decode('utf8')
except:
def hexencode_(s):
return ''.join(["%x" % c for c in s])
toInteger = int
class ReportItem():
"""
Helper structure to keep temporary 'best' information about a value
or a type scheduled to be reported. This might get overridden be
subsequent better guesses during a putItem() run.
"""
def __init__(self, value=None, encoding=None, priority=-100, length=None):
self.value = value
self.priority = priority
self.encoding = encoding
self.length = length
def __str__(self):
return 'Item(value: %s, encoding: %s, priority: %s, length: %s)' \
% (self.value, self.encoding, self.priority, self.length)
class Children():
def __init__(self, d, numChild=1, childType=None, childNumChild=None,
maxNumChild=None, addrBase=None, addrStep=None):
self.d = d
self.numChild = numChild
self.childNumChild = childNumChild
self.maxNumChild = maxNumChild
if childType is None:
self.childType = None
else:
self.childType = childType.name
if not self.d.isCli:
self.d.putField('childtype', self.childType)
if childNumChild is not None:
self.d.putField('childnumchild', childNumChild)
self.childNumChild = childNumChild
if addrBase is not None and addrStep is not None:
self.d.put('addrbase="0x%x",addrstep="%d",' % (addrBase, addrStep))
def __enter__(self):
self.savedChildType = self.d.currentChildType
self.savedChildNumChild = self.d.currentChildNumChild
self.savedNumChild = self.d.currentNumChild
self.savedMaxNumChild = self.d.currentMaxNumChild
self.d.currentChildType = self.childType
self.d.currentChildNumChild = self.childNumChild
self.d.currentNumChild = self.numChild
self.d.currentMaxNumChild = self.maxNumChild
self.d.put(self.d.childrenPrefix)
def __exit__(self, exType, exValue, exTraceBack):
if exType is not None:
if self.d.passExceptions:
self.d.showException('CHILDREN', exType, exValue, exTraceBack)
self.d.putSpecialValue('notaccessible')
self.d.putNumChild(0)
if self.d.currentMaxNumChild is not None:
if self.d.currentMaxNumChild < self.d.currentNumChild:
self.d.put('{name="<load more>",value="",type="",numchild="1"},')
self.d.currentChildType = self.savedChildType
self.d.currentChildNumChild = self.savedChildNumChild
self.d.currentNumChild = self.savedNumChild
self.d.currentMaxNumChild = self.savedMaxNumChild
if self.d.isCli:
self.d.put('\n' + ' ' * self.d.indent)
self.d.put(self.d.childrenSuffix)
return True
class SubItem():
def __init__(self, d, component):
self.d = d
self.name = component
self.iname = None
def __enter__(self):
self.d.enterSubItem(self)
def __exit__(self, exType, exValue, exTraceBack):
return self.d.exitSubItem(self, exType, exValue, exTraceBack)
class TopLevelItem(SubItem):
def __init__(self, d, iname):
self.d = d
self.iname = iname
self.name = None
class UnnamedSubItem(SubItem):
def __init__(self, d, component):
self.d = d
self.iname = '%s.%s' % (self.d.currentIName, component)
self.name = None
class DumperBase():
@staticmethod
def warn(message):
print('bridgemessage={msg="%s"}' % message.replace('"', "'").replace('\\', '\\\\'))
#@staticmethod
def showException(self, msg, exType, exValue, exTraceback):
self.warn('**** CAUGHT EXCEPTION: %s ****' % msg)
try:
import traceback
for frame_desc in traceback.format_exception(exType, exValue, exTraceback):
for line in frame_desc.split('\n'):
self.warn(line)
except:
pass
def dump_location(self):
import traceback
from io import StringIO
io = StringIO()
traceback.print_stack(file=io)
data = io.getvalue()
self.warn('LOCATION:')
for line in data.split('\n')[:-3]:
self.warn(line)
def __init__(self):
self.isCdb = False
self.isGdb = False
self.isLldb = False
self.isCli = False
self.isDebugBuild = None
# Later set, or not set:
self.stringCutOff = 10000
self.displayStringLimit = 100
self.useTimeStamps = False
self.output = []
self.typesReported = {}
self.typesToReport = {}
self.qtNamespaceToReport = None
self.qtCustomEventFunc = 0
self.qtCustomEventPltFunc = 0
self.qtPropertyFunc = 0
self.passExceptions = False
self.isTesting = False
self.qtLoaded = False
self.isBigEndian = False
self.packCode = '<'
self.resetCaches()
self.resetStats()
self.childrenPrefix = 'children=['
self.childrenSuffix = '],'
self.dumpermodules = []
# These are sticky for the session
self.qtversion = None
self.qtversionAtLeast6 = None
self.qtnamespace = None
self.init_type_cache()
try:
# Fails in the piping case
self.dumpermodules = [
os.path.splitext(os.path.basename(p))[0] for p in
glob.glob(os.path.join(os.path.dirname(__file__), '*types.py'))
]
except:
pass
# These values are never used, but the variables need to have
# some value base for the swapping logic in Children.__enter__()
# and Children.__exit__().
self.currentIName = None
self.currentValue = None
self.currentType = None
self.currentNumChild = None
self.currentMaxNumChild = None
self.currentPrintsAddress = True
self.currentChildType = None
self.currentChildNumChild = None
self.register_known_simple_types()
def setVariableFetchingOptions(self, args):
self.last_args = args
self.resultVarName = args.get('resultvarname', '')
self.expandedINames = args.get('expanded', {})
self.stringCutOff = int(args.get('stringcutoff', 10000))
self.displayStringLimit = int(args.get('displaystringlimit', 100))
self.typeformats = args.get('typeformats', {})
self.formats = args.get('formats', {})
self.watchers = args.get('watchers', {})
self.useDynamicType = int(args.get('dyntype', '0'))
self.useFancy = int(args.get('fancy', '0'))
self.forceQtNamespace = int(args.get('forcens', '0'))
self.passExceptions = int(args.get('passexceptions', '0'))
self.isTesting = int(args.get('testing', '0'))
self.showQObjectNames = int(args.get('qobjectnames', '1'))
self.nativeMixed = int(args.get('nativemixed', '0'))
self.autoDerefPointers = int(args.get('autoderef', '0'))
self.useTimeStamps = int(args.get('timestamps', '0'))
self.partialVariable = args.get('partialvar', '')
self.uninitialized = args.get('uninitialized', [])
self.uninitialized = list(map(lambda x: self.hexdecode(x), self.uninitialized))
if self.qtversion is None:
self.qtversion = args.get('qtversion', None)
if self.qtversion == 0:
self.qtversion = None
if self.qtnamespace is None:
self.qtnamespace = args.get('qtnamespace', None)
#self.warn('NAMESPACE: "%s"' % self.qtNamespace())
#self.warn('EXPANDED INAMES: %s' % self.expandedINames)
#self.warn('WATCHERS: %s' % self.watchers)
# Call this with 'py theDumper.profile1() from Creator
def profile(self):
'''Internal profiling'''
import cProfile
import visualize
profiler = cProfile.Profile()
profiler.enable()
self.profiled_command()
profiler.disable()
visualize.profile_visualize(profiler.getstats())
def profiled_command(self):
args = self.last_args
args['partialvar'] = ''
self.fetchVariables(args)
def extractQtVersion(self):
# can be overridden in bridges
pass
def qtVersion(self):
if self.qtversion:
return self.qtversion
#self.warn("ACCESSING UNKNOWN QT VERSION")
self.qtversion = self.extractQtVersion()
if self.qtversion:
return self.qtversion
#self.warn("EXTRACTING QT VERSION FAILED. GUESSING NOW.")
if self.qtversionAtLeast6 is None or self.qtversionAtLeast6 is True:
return 0x060602
return 0x050f00
def qtVersionAtLeast(self, version):
# A hack to cover most of the changes from Qt 5 to 6
if version == 0x60000 and self.qtversionAtLeast6 is not None:
return self.qtversionAtLeast6
if version == 0x50000: # FIXME: This drops unknown 4.x for now
return True
return self.qtVersion() >= version
def qtVersionPing(self, typeid, size_for_qt5=-1):
# To be called from places where the type size is sufficient
# to distinguish Qt 5.x and 6.x
if size_for_qt5 == -1:
size_for_qt5 = self.ptrSize()
test_size = self.type_size(typeid)
self.setQtVersionAtLeast6(test_size > size_for_qt5)
def setQtVersionAtLeast6(self, is6):
if self.qtversionAtLeast6 is None:
#self.warn("SETTING Qt VERSION AT LEAST 6 TO %s" % is6)
self.qtversionAtLeast6 = is6
self.register_known_qt_types()
#else:
# self.warn("QT VERSION ALREADY KNOWN")
def qtNamespace(self):
return '' if self.qtnamespace is None else self.qtnamespace
def resetPerStepCaches(self):
self.perStepCache = {}
pass
def resetCaches(self):
# This is a cache mapping from 'type name' to 'display alternatives'.
self.qqFormats = {'QVariant (QVariantMap)': [DisplayFormat.CompactMap]}
# This is a cache of all known dumpers.
self.qqDumpers = {} # Direct type match
self.qqDumpersEx = {} # Using regexp
# This is a cache of all dumpers that support writing.
self.qqEditable = {}
# This keeps canonical forms of the typenames, without array indices etc.
self.cachedFormats = {}
# Maps type names to static metaobjects. If a type is known
# to not be QObject derived, it contains a 0 value.
self.knownStaticMetaObjects = {}
# A dictionary to serve as a per debugging step cache.
# Cleared on each step over / into / continue.
self.perStepCache = {}
# A dictionary to serve as a general cache throughout the whole
# debug session.
self.generalCache = {}
self.counts = {}
self.timings = []
self.expandableINames = set({})
def resetStats(self):
# Timing collection
self.timings = []
pass
def dumpStats(self):
msg = [self.counts, self.timings]
self.resetStats()
return msg
def bump(self, key):
if key in self.counts:
self.counts[key] += 1
else:
self.counts[key] = 1
def childRange(self):
if self.currentMaxNumChild is None:
return range(0, self.currentNumChild)
return range(min(self.currentMaxNumChild, self.currentNumChild))
def maxArrayCount(self):
if self.currentIName in self.expandedINames:
return self.expandedINames[self.currentIName]
return 100
def enterSubItem(self, item):
if self.useTimeStamps:
item.startTime = time.time()
if not item.iname:
item.iname = '%s.%s' % (self.currentIName, item.name)
if not self.isCli:
self.put('{')
if isinstance(item.name, str):
self.putField('name', item.name)
else:
self.indent += 1
self.put('\n' + ' ' * self.indent)
if isinstance(item.name, str):
self.put(item.name + ' = ')
item.savedIName = self.currentIName
item.savedValue = self.currentValue
item.savedType = self.currentType
self.currentIName = item.iname
self.currentValue = ReportItem()
self.currentType = ReportItem()
def exitSubItem(self, item, exType, exValue, exTraceBack):
#self.warn('CURRENT VALUE: %s: %s %s' %
# (self.currentIName, self.currentValue, self.currentType))
if exType is not None:
if self.passExceptions:
self.showException('SUBITEM', exType, exValue, exTraceBack)
self.putSpecialValue('notaccessible')
self.putNumChild(0)
if not self.isCli:
try:
if self.currentType.value:
typename = self.currentType.value
if len(typename) > 0 and typename != self.currentChildType:
self.putField('type', typename)
if self.currentValue.value is None:
self.put('value="",encoding="notaccessible",numchild="0",')
else:
if self.currentValue.encoding is not None:
self.put('valueencoded="%s",' % self.currentValue.encoding)
if self.currentValue.length:
self.put('valuelen="%s",' % self.currentValue.length)
self.put('value="%s",' % self.currentValue.value)
except:
pass
if self.useTimeStamps:
self.put('time="%s",' % (time.time() - item.startTime))
self.put('},')
else:
self.indent -= 1
try:
if self.currentType.value:
typename = self.currentType.value
self.put('<%s> = {' % typename)
if self.currentValue.value is None:
self.put('<not accessible>')
else:
value = self.currentValue.value
if self.currentValue.encoding == 'latin1':
value = self.hexdecode(value)
elif self.currentValue.encoding == 'utf8':
value = self.hexdecode(value)
elif self.currentValue.encoding == 'utf16':
b = bytes(bytearray.fromhex(value))
value = codecs.decode(b, 'utf-16')
self.put('"%s"' % value)
if self.currentValue.length:
self.put('...')
if self.currentType.value:
self.put('}')
except:
pass
self.currentIName = item.savedIName
self.currentValue = item.savedValue
self.currentType = item.savedType
return True
def stripForFormat(self, typename):
if not isinstance(typename, str):
raise RuntimeError('Expected string in stripForFormat(), got %s' % type(typename))
if typename in self.cachedFormats:
return self.cachedFormats[typename]
stripped = ''
inArray = 0
for c in typename:
if c == '<':
break
if c == ' ':
continue
if c == '[':
inArray += 1
elif c == ']':
inArray -= 1
if inArray and ord(c) >= 48 and ord(c) <= 57:
continue
stripped += c
self.cachedFormats[typename] = stripped
return stripped
def templateArgument(self, typeobj, index):
return self.type_template_argument(typeobj.typeid, index)
def intType(self):
return self.type_for_int
def charType(self):
return self.type_for_char
def ptrSize(self):
result = self.lookupType('void*').size()
self.ptrSize = lambda: result
return result
def lookupType(self, typename):
if not isinstance(typename, str):
raise RuntimeError('ARG ERROR FOR lookupType, got %s' % type(typename))
typeid = self.typeid_for_string(typename)
native_type = self.type_nativetype_cache.get(typeid)
if native_type is None:
native_type = self.lookupNativeType(typename)
if native_type is None:
#sCANNOT DETERMINE SIZE FOR TYelf.dump_location()
self.dump_location()
self.warn("TYPEIDS: %s" % self.typeid_cache)
self.warn("COULD NOT FIND TYPE '%s'" % typename)
return None
self.type_nativetype_cache[typeid] = native_type
typeid = self.from_native_type(native_type)
if typeid == 0:
return None
return self.Type(self, typeid)
def register_type(self, name, code, size, enc=None):
typeid = self.typeid_for_string(name)
self.type_code_cache[typeid] = code
self.type_size_cache[typeid] = size
self.type_alignment_cache[typeid] = size
if enc is not None:
self.type_encoding_cache[typeid] = enc
return typeid
def register_int(self, name, size, enc=None):
typeid = self.typeid_for_string(name)
self.type_code_cache[typeid] = TypeCode.Integral
self.type_size_cache[typeid] = size
self.type_alignment_cache[typeid] = size
if enc is not None:
self.type_encoding_cache[typeid] = enc
return typeid
def register_enum(self, name, size):
typeid = self.typeid_for_string(name)
self.type_code_cache[typeid] = TypeCode.Enum
self.type_size_cache[typeid] = size
self.type_alignment_cache[typeid] = size
return typeid
def register_typedef(self, name, target_typeid):
typeid = self.typeid_for_string(name)
self.type_code_cache[typeid] = TypeCode.Typedef
self.type_target_cache[typeid] = target_typeid
self.type_size_cache[typeid] = self.type_size_cache[target_typeid]
self.type_alignment_cache[typeid] = self.type_alignment_cache[target_typeid]
return typeid
def register_struct(self, name, p5=0, p6=0, s=0, qobject_based=False):
# p5 = n -> n * ptrsize for Qt 5
# p6 = n -> n * ptrsize for Qt 6
if self.qtversionAtLeast6 is None:
self.warn("TOO EARLY TO GUESS QT VERSION")
size = 8 * p6 + s
elif self.qtversionAtLeast6 is True:
size = 8 * p6 + s
else:
size = 8 * p5 + s
typeid = self.typeid_for_string(name)
self.type_code_cache[typeid] = TypeCode.Struct
self.type_size_cache[typeid] = size
self.type_qobject_based_cache[typeid] = qobject_based
self.type_alignment_cache[typeid] = 8
return typeid
def register_known_simple_types(self):
typeid = 0
self.typeid_cache[''] = typeid
self.type_code_cache[typeid] = TypeCode.Void
self.type_name_cache[typeid] = '<Error>'
self.type_size_cache[typeid] = 1
typeid_char = self.register_int('char', 1, 'uint:1')
self.type_for_char = self.Type(self, typeid_char)
self.register_int('signed char', 1, 'int:1')
self.register_int('unsigned char', 1, 'uint:1')
self.register_int('bool', 1, 'uint:1')
self.register_int('char8_t', 1, 'uint:1')
self.register_int('int8_t', 1, 'int:1')
self.register_int('uint8_t', 1, 'uint:1')
self.register_int('qint8', 1, 'int:1')
self.register_int('quint8', 1, 'uint:1')
self.register_int('short', 2, 'int:2')
self.register_int('short int', 2, 'int:2')
self.register_int('signed short', 2, 'int:2')
self.register_int('signed short int', 2, 'int:2')
typeid_unsigned_short = \
self.register_int('unsigned short', 2, 'uint:2')
self.register_int('unsigned short int', 2, 'uint:2')
self.register_int('char16_t', 2, 'uint:2')
self.register_int('int16_t', 2, 'int:2')
self.register_int('uint16_t', 2, 'uint:2')
self.register_int('qint16', 2, 'int:2')
self.register_int('quint16', 2, 'uint:2')
typeid_int = self.register_type('int', 4, 'int:4')
self.type_for_int = self.Type(self, typeid_int)
self.register_int('int', 4, 'int:4')
self.register_int('signed int', 4, 'int:4')
self.register_int('unsigned int', 4, 'uint:4')
self.register_int('char32_t', 4, 'int:4')
self.register_int('int32_t', 4, 'int:4')
self.register_int('uint32_t', 4, 'uint:4')
self.register_int('qint32', 4, 'int:4')
self.register_int('quint32', 4, 'uint:4')
self.register_int('long long', 8, 'int:8')
self.register_int('signed long long', 8, 'int:8')
self.register_int('unsigned long long', 8, 'uint:8')
self.register_int('int64_t', 8, 'int:8')
self.register_int('uint64_t', 8, 'uint:8')
self.register_int('qint64', 8, 'int:8')
self.register_int('quint64', 8, 'uint:8')
self.register_type('float', TypeCode.Float, 4, 'float:4')
typeid_double = self.register_type('double', TypeCode.Float, 8, 'float:8')
self.register_typedef('qreal', typeid_double)
typeid_qchar = self.register_type('@QChar', TypeCode.Struct, 2, 'uint:2')
#self.type_fields_cache[typeid_qchar] = [
# self.Field(name='ucs', typeid=typeid_unsigned_short, bitsize=16, bitpos=0)]
self.register_enum('@Qt::ItemDataRole', 4)
def register_known_qt_types(self):
#self.warn("REGISTERING KNOWN QT TYPES NOW")
self.register_struct('@QObject', p5=2, p6=2, qobject_based=True)
self.register_struct('@QObjectPrivate', p5=10, p6=10) # FIXME: Not exact
self.register_struct('@QByteArray', p5=1, p6=3)
self.register_struct('@QString', p5=1, p6=3)
self.register_struct('@QStandardItemData', p5=3, p6=5)
self.register_struct('@QVariant', p5=2, p6=4)
self.register_struct('@QXmlAttributes::Attribute', p5=4, p6=12)
self.register_struct('@QList<@QObject*>', p5=1, p6=3)
self.register_struct('@QList<@QStandardItemData>', p5=1, p6=3)
self.register_struct('@QList<@QRect>', p5=1, p6=3)
typeid_var_list = self.register_struct('@QList<@QVariant>', p5=1, p6=3)
self.register_typedef('@QVariantList', typeid_var_list)
typeid_var_map = self.register_struct('@QMap<@QString, @QVariant>', p5=1, p6=1)
self.register_typedef('@QVariantMap', typeid_var_map)
typeid_var_hash = self.register_struct('@QHash<@QString, @QVariant>', p5=1, p6=1)
self.register_typedef('@QVariantHash', typeid_var_hash)
self.register_struct('@QPoint', s=8)
self.register_struct('@QPointF', s=16)
self.register_struct('@QLine', s=16)
self.register_struct('@QLineF', s=32)
# FIXME: Comment out for production, see [MARK_A]
name1 = 'std::__cxx11::basic_string<char,std::char_traits<char>,std::allocator<char>>'
self.register_struct(name1, p6=4)
def nativeDynamicType(self, address, baseType):
return baseType # Override in backends.
def fill_template_parameters_manually(self, typeid):
typename = self.type_name(typeid)
# Undo id mangling for template typedefs. Relevant for QPair.
if typename.endswith('}'):
typename = typename[typename.find('{') + 1 : -1]
if not typename.endswith('>'):
return
targs = []
def push(inner):
# Handle local struct definitions like QList<main(int, char**)::SomeStruct>
inner = inner.strip()[::-1]
p = inner.find(')::')
if p > -1:
inner = inner[p + 3:].strip()
if inner.startswith('const '):
inner = inner[6:].strip()
if inner.endswith(' const'):
inner = inner[:-6].strip()
#self.warn("FOUND: %s" % inner)
targs.append(inner)
#self.warn("SPLITTING %s" % typename)
level = 0
inner = ''
for c in typename[::-1]: # Reversed...
#self.warn("C: %s" % c)
if c == '>':
if level > 0:
inner += c
level += 1
elif c == '<':
level -= 1
if level > 0:
inner += c
else:
push(inner)
inner = ''
break
elif c == ',':
#self.warn('c: %s level: %s' % (c, level))
if level == 1:
push(inner)
inner = ''
else:
inner += c
else:
inner += c
#self.warn("TARGS: %s %s" % (typename, targs))
idx = 0
for item in targs[::-1]:
if len(item) == 0:
continue
if item == "false": # Triggered in StdTuple dumper
self.type_template_arguments_cache[(typeid, idx)] = False
elif item == "true":
self.type_template_arguments_cache[(typeid, idx)] = True
else:
c = ord(item[0])
if c in (45, 46) or (c >= 48 and c < 58): # '-', '.' or digit.
if '.' in item:
self.type_template_arguments_cache[(typeid, idx)] = float(item)
else:
if item.endswith('l'):
item = item[:-1]
if item.endswith('u'):
item = item[:-1]
val = int(item)
if val > 0x80000000:
val -= 0x100000000
self.type_template_arguments_cache[(typeid, idx)] = val
else:
targ = self.Type(self, self.create_typeid_from_name(item))
self.type_template_arguments_cache[(typeid, idx)] = targ
idx += 1
#self.warn('MANUAL: %s %s' % (type_name, targs))
# Hex decoding operating on str, return str.
@staticmethod
def hexdecode(s, encoding='utf8'):
return bytes.fromhex(s).decode(encoding)
# Hex encoding operating on str or bytes, return str.
@staticmethod
def hexencode(s):
if s is None:
s = ''
if isinstance(s, str):
s = s.encode('utf8')
return hexencode_(s)
def isQt3Support(self):
# assume no Qt 3 support by default
return False
# Clamps length to limit.
def computeLimit(self, length, limit=0):
if limit == 0:
limit = self.displayStringLimit
if limit is None or length <= limit:
return length
return limit
def vectorData(self, value):
if self.qtVersionAtLeast(0x060000):
data, length, alloc = self.qArrayData(value)
elif self.qtVersionAtLeast(0x050000):
vector_data_ptr = self.extractPointer(value)
if self.ptrSize() == 4:
(ref, length, alloc, offset) = self.split('IIIp', vector_data_ptr)
else:
(ref, length, alloc, pad, offset) = self.split('IIIIp', vector_data_ptr)
alloc = alloc & 0x7ffffff
data = vector_data_ptr + offset
else:
vector_data_ptr = self.extractPointer(value)
(ref, alloc, length) = self.split('III', vector_data_ptr)
data = vector_data_ptr + 16
self.check(0 <= length and length <= alloc and alloc <= 1000 * 1000 * 1000)
return data, length
def qArrayData(self, value):
if self.qtVersionAtLeast(0x60000):
dd, data, length = self.split('ppp', value)
if dd:
_, _, alloc = self.split('iip', dd)
else: # fromRawData
alloc = length
return data, length, alloc
return self.qArrayDataHelper(self.extractPointer(value))
def qArrayDataHelper(self, array_data_ptr):
# array_data_ptr is what is e.g. stored in a QByteArray's d_ptr.
if self.qtVersionAtLeast(0x050000):
# QTypedArray:
# - QtPrivate::RefCount ref
# - int length
# - uint alloc : 31, capacityReserved : 1
# - qptrdiff offset
(ref, length, alloc, offset) = self.split('IIpp', array_data_ptr)
alloc = alloc & 0x7ffffff
data = array_data_ptr + offset
if self.ptrSize() == 4:
data = data & 0xffffffff
else:
data = data & 0xffffffffffffffff
elif self.qtVersionAtLeast(0x040000):
# Data:
# - QBasicAtomicInt ref;
# - int alloc, length;
# - [padding]
# - char *data;
if self.ptrSize() == 4:
(ref, alloc, length, data) = self.split('IIIp', array_data_ptr)
else:
(ref, alloc, length, pad, data) = self.split('IIIIp', array_data_ptr)
else:
# Data:
# - QShared count;
# - QChar *unicode
# - char *ascii
# - uint len: 30
(dummy, dummy, dummy, length) = self.split('IIIp', array_data_ptr)
length = self.extractInt(array_data_ptr + 3 * self.ptrSize()) & 0x3ffffff
alloc = length # pretend.
data = self.extract_pointer_at_address(array_data_ptr + self.ptrSize())
return data, length, alloc
def encodeStringHelper(self, value, limit):
data, length, alloc = self.qArrayData(value)
if alloc != 0:
self.check(0 <= length and length <= alloc and alloc <= 100 * 1000 * 1000)
shown = self.computeLimit(2 * length, 2 * limit)
return length, self.readMemory(data, shown)
def encodeByteArrayHelper(self, value, limit):
data, length, alloc = self.qArrayData(value)
if alloc != 0:
self.check(0 <= length and length <= alloc and alloc <= 100 * 1000 * 1000)
shown = self.computeLimit(length, limit)
return length, self.readMemory(data, shown)
def putCharArrayValue(self, data, length, charSize,
displayFormat=DisplayFormat.Automatic):
shown = self.computeLimit(length, self.displayStringLimit)
mem = self.readMemory(data, shown * charSize)
if charSize == 1:
if displayFormat in (DisplayFormat.Latin1String, DisplayFormat.SeparateLatin1String):
encodingType = 'latin1'
else:
encodingType = 'utf8'
#childType = 'char'
elif charSize == 2:
encodingType = 'utf16'
#childType = 'short'
else:
encodingType = 'ucs4'
#childType = 'int'
self.putValue(mem, encodingType, length=length)
if displayFormat in (
DisplayFormat.SeparateLatin1String,
DisplayFormat.SeparateUtf8String,
DisplayFormat.Separate):
shown = self.computeLimit(length, 100000)
self.putDisplay(encodingType + ':separate', self.readMemory(data, shown))
def putCharArrayHelper(self, data, size, charType,
displayFormat=DisplayFormat.Automatic,
makeExpandable=True):
charSize = charType.size()
self.putCharArrayValue(data, size, charSize, displayFormat)
if makeExpandable:
self.putNumChild(size)
if self.isExpanded():
with Children(self):
for i in range(size):
self.putSubItem(size, self.createValueFromAddress(data + i * charSize, charType))
def readMemory(self, addr, size):
return self.hexencode(bytes(self.readRawMemory(addr, size)))
def encodeByteArray(self, value, limit=0):
_, data = self.encodeByteArrayHelper(value, limit)
return data
def putByteArrayValue(self, value):
length, data = self.encodeByteArrayHelper(value, self.displayStringLimit)
self.putValue(data, 'latin1', length=length)
def encodeString(self, value, limit=0):
_, data = self.encodeStringHelper(value, limit)
return data
def encodedUtf16ToUtf8(self, s):
return ''.join([chr(int(s[i:i + 2], 16)) for i in range(0, len(s), 4)])
def encodeStringUtf8(self, value, limit=0):
return self.encodedUtf16ToUtf8(self.encodeString(value, limit))
def stringData(self, value): # -> (data, size, alloc)
return self.qArrayData(value)
def putStringValue(self, value):
length, data = self.encodeStringHelper(value, self.displayStringLimit)
self.putValue(data, 'utf16', length=length)
def putPtrItem(self, name, value):
with SubItem(self, name):
self.putValue('0x%x' % value)
self.putType('void*')
def putIntItem(self, name, value):
with SubItem(self, name):
if isinstance(value, self.Value):
self.putValue(value.display())
else:
self.putValue(value)
self.putType('int')
def putEnumItem(self, name, ival, typish):
val = self.Value(self)
val.ldata = ival
val.typeid = self.create_typeid(typish)
with SubItem(self, name):
self.putItem(val)
def putBoolItem(self, name, value):
with SubItem(self, name):
self.putValue(value)
self.putType('bool')
def putPairItem(self, index, pair, keyName='first', valueName='second'):
with SubItem(self, index):
self.putPairContents(index, pair, keyName, valueName)
def putPairContents(self, index, pair, kname, vname):
with Children(self):
first, second = pair if isinstance(pair, tuple) else pair.members(False)
key = self.putSubItem(kname, first)
value = self.putSubItem(vname, second)
if self.isCli:
self.putEmptyValue()
else:
if index is not None:
self.putField('keyprefix', '[%s] ' % index)
self.putField('key', key.value)
if key.encoding is not None:
self.putField('keyencoded', key.encoding)
self.putValue(value.value, value.encoding)
def putEnumValue(self, ival, vals):
nice = vals.get(ival, None)
display = ('%d' % ival) if nice is None else ('%s (%d)' % (nice, ival))
self.putValue(display)
def putCallItem(self, name, rettype, value, func, *args):
with SubItem(self, name):
try:
result = self.callHelper(rettype, value, func, args)
except Exception as error:
if self.passExceptions:
raise error
children = [('error', error)]
self.putSpecialValue("notcallable", children=children)
else:
self.putItem(result)
def call(self, rettype, value, func, *args):
return self.callHelper(rettype, value, func, args)
def putAddress(self, address):
if address is not None and not self.isCli:
self.put('address="0x%x",' % address)
def putPlainChildren(self, value, dumpBase=True):
self.putExpandable()
if self.isExpanded():
self.putEmptyValue(-99)
with Children(self):
self.putFields(value, dumpBase)
def putNamedChildren(self, values, names):
self.putEmptyValue(-99)
self.putExpandable()
if self.isExpanded():
with Children(self):
for n, v in zip(names, values):
self.putSubItem(n, v)
def prettySymbolByAddress(self, address):
return '0x%x' % address
def putSymbolValue(self, address):
self.putValue(self.prettySymbolByAddress(address))
def putVTableChildren(self, value, itemCount):
p = self.value_as_address(value)
entry_typeid = self.create_pointer_typeid(self.create_typeid('void'))
for i in range(itemCount):
deref = self.extract_pointer_at_address(p)
if deref == 0:
itemCount = i
break
with SubItem(self, i):
val = self.Value(self)
val.ldata = deref
val.typeid = entry_typeid
self.putItem(val)
p += self.ptrSize()
return itemCount
def putFields(self, value, dumpBase=True):
baseIndex = 0
for item in value.members(True):
if item.name is not None:
if (item.name.startswith('_vptr.')
or item.name.startswith('_vptr$')
or item.name.startswith('__vfptr')):
with SubItem(self, '[vptr]'):
# int (**)(void)
self.putType(' ')
self.putSortGroup(20)
self.putValue(item.name)
n = 100
if self.isExpanded():
with Children(self):
n = self.putVTableChildren(item, n)
self.putNumChild(n)
continue
if item.isBaseClass and dumpBase:
baseIndex += 1
# We cannot use nativeField.name as part of the iname as
# it might contain spaces and other strange characters.
with UnnamedSubItem(self, "@%d" % baseIndex):
self.putField('iname', self.currentIName)
self.putField('name', '[%s]' % item.name)
if not self.isCli:
self.putSortGroup(1000 - baseIndex)
self.putAddress(item.address())
self.putItem(item)
continue
with SubItem(self, item.name):
self.putItem(item)
def putExpandable(self):
self.putNumChild(1)
self.expandableINames.add(self.currentIName)
if self.isCli:
self.putValue('{...}', -99)
def putMembersItem(self, value, sortorder=10):
with SubItem(self, '[members]'):
self.putSortGroup(sortorder)
self.putPlainChildren(value)
def put(self, stuff):
self.output.append(stuff)
def takeOutput(self):
res = ''.join(self.output)
self.output = []
return res
def check(self, exp):
if not exp:
self.warn('Check failed: %s' % exp)
self.dump_location()
raise RuntimeError('Check failed: %s' % exp)
def check_typeid(self, typeid):
if not isinstance(typeid, int):
raise RuntimeError('WRONG TYPE FOR TYPEID: %s %s' % (str(typeid), type(typeid)))
def checkRef(self, ref):
# Assume there aren't a million references to any object.
self.check(ref >= -1)
self.check(ref < 1000000)
def checkIntType(self, thing):
if not isinstance(thing, int):
raise RuntimeError('Expected an integral value, got %s' % type(thing))
def readToFirstZero(self, base, typesize, maximum):
self.checkIntType(base)
self.checkIntType(typesize)
self.checkIntType(maximum)
code = self.packCode + (None, 'b', 'H', None, 'I')[typesize]
#blob = self.readRawMemory(base, 1)
blob = bytes()
while maximum > 1:
try:
blob = self.readRawMemory(base, maximum)
break
except:
maximum = int(maximum / 2)
self.warn('REDUCING READING MAXIMUM TO %s' % maximum)
#self.warn('BASE: 0x%x TSIZE: %s MAX: %s' % (base, typesize, maximum))
for i in range(0, maximum, typesize):
t = struct.unpack_from(code, blob, i)[0]
if t == 0:
return 0, i, self.hexencode(blob[:i])
# Real end is unknown.
return -1, maximum, self.hexencode(blob[:maximum])
def encodeCArray(self, p, typesize, limit):
length, shown, blob = self.readToFirstZero(p, typesize, limit)
return length, blob
def putItemCount(self, count, maximum=1000000000):
# This needs to override the default value, so don't use 'put' directly.
if count > maximum:
self.putSpecialValue('minimumitemcount', maximum)
else:
self.putSpecialValue('itemcount', count)
self.putNumChild(count)
def resultToMi(self, value):
if isinstance(value, bool):
return '"%d"' % int(value)
if isinstance(value, dict):
return '{' + ','.join(['%s=%s' % (k, self.resultToMi(v))
for (k, v) in list(value.items())]) + '}'
if isinstance(value, list):
return '[' + ','.join([self.resultToMi(k)
for k in value]) + ']'
return '"%s"' % value
def variablesToMi(self, value, prefix):
if isinstance(value, bool):
return '"%d"' % int(value)
if isinstance(value, dict):
pairs = []
for (k, v) in list(value.items()):
if k == 'iname':
if v.startswith('.'):
v = '"%s%s"' % (prefix, v)
else:
v = '"%s"' % v
else:
v = self.variablesToMi(v, prefix)
pairs.append('%s=%s' % (k, v))
return '{' + ','.join(pairs) + '}'
if isinstance(value, list):
index = 0
pairs = []
for item in value:
if item.get('type', '') == 'function':
continue
name = item.get('name', '')
if len(name) == 0:
name = str(index)
index += 1
pairs.append((name, self.variablesToMi(item, prefix)))
pairs.sort(key=lambda pair: pair[0])
return '[' + ','.join([pair[1] for pair in pairs]) + ']'
return '"%s"' % value
def filterPrefix(self, prefix, items):
return [i[len(prefix):] for i in items if i.startswith(prefix)]
def tryFetchInterpreterVariables(self, args):
if not int(args.get('nativemixed', 0)):
return (False, '')
context = args.get('context', '')
if not len(context):
return (False, '')
expanded = args.get('expanded')
args['expanded'] = self.filterPrefix('local', expanded)
res = self.sendInterpreterRequest('variables', args)
if not res:
return (False, '')
reslist = []
for item in res.get('variables', {}):
if 'iname' not in item:
item['iname'] = '.' + item.get('name')
reslist.append(self.variablesToMi(item, 'local'))
watchers = args.get('watchers', None)
if watchers:
toevaluate = []
name2expr = {}
seq = 0
for watcher in watchers:
expr = self.hexdecode(watcher.get('exp'))
name = str(seq)
toevaluate.append({'name': name, 'expression': expr})
name2expr[name] = expr
seq += 1
args['expressions'] = toevaluate
args['expanded'] = self.filterPrefix('watch', expanded)
del args['watchers']
res = self.sendInterpreterRequest('expressions', args)
if res:
for item in res.get('expressions', {}):
name = item.get('name')
iname = 'watch.' + name
expr = name2expr.get(name)
item['iname'] = iname
item['wname'] = self.hexencode(expr)
item['exp'] = expr
reslist.append(self.variablesToMi(item, 'watch'))
return (True, 'data=[%s]' % ','.join(reslist))
def putField(self, name, value):
self.put('%s="%s",' % (name, value))
def putType(self, typish, priority=0):
# Higher priority values override lower ones.
if priority >= self.currentType.priority:
if isinstance(typish, str):
self.currentType.value = typish
elif isinstance(typish, int):
self.currentType.value = self.type_name(typish)
elif isinstance(typish, self.Type):
self.currentType.value = typish.name
else:
self.currentType.value = str(type(typish))
self.currentType.priority = priority
def putValue(self, value, encoding=None, priority=0, length=None):
# Higher priority values override lower ones.
# length = None indicates all data is available in value,
# otherwise it's the true length.
if priority >= self.currentValue.priority:
self.currentValue = ReportItem(value, encoding, priority, length)
def putSpecialValue(self, encoding, value='', children=None):
self.putValue(value, encoding)
if children is not None:
self.putExpandable()
if self.isExpanded():
with Children(self):
for name, value in children:
with SubItem(self, name):
self.putValue(str(value).replace('"', '$'))
def putEmptyValue(self, priority=-10):
if priority >= self.currentValue.priority:
self.currentValue = ReportItem('', None, priority, None)
def putName(self, name):
self.putField('name', name)
def putBetterType(self, typish):
if isinstance(typish, ReportItem):
self.currentType.value = typish.value
elif isinstance(typish, str):
self.currentType.value = typish.replace('@', self.qtNamespace())
else:
self.currentType.value = typish.name
self.currentType.priority += 1
def putNoType(self):
# FIXME: replace with something that does not need special handling
# in SubItem.__exit__().
self.putBetterType(' ')
def putInaccessible(self):
#self.putBetterType(' ')
self.putNumChild(0)
self.currentValue.value = None
def putNamedSubItem(self, component, value, name):
with SubItem(self, component):
self.putName(name)
self.putItem(value)
def isExpanded(self):
#self.warn('IS EXPANDED: %s in %s: %s' % (self.currentIName,
# self.expandedINames, self.currentIName in self.expandedINames))
return self.currentIName in self.expandedINames
def mangleName(self, typename):
return '_ZN%sE' % ''.join(map(lambda x: '%d%s' % (len(x), x),
typename.split('::')))
def arrayItemCountFromTypeName(self, typename, fallbackMax=1):
itemCount = typename[typename.find('[') + 1:typename.find(']')]
return int(itemCount) if itemCount else fallbackMax
def putCStyleArray(self, value):
arrayType = value.type
innerType = arrayType.target()
#self.warn("ARRAY TYPE: %s" % arrayType)
#self.warn("INNER TYPE: %s" % innerType)
address = value.address()
if address:
self.putValue('@0x%x' % address, priority=-1)
else:
self.putEmptyValue()
self.putType(arrayType)
displayFormat = self.currentItemFormat()
arrayByteSize = arrayType.size()
n = self.arrayItemCountFromTypeName(value.type.name, 100)
if arrayByteSize == 0:
# This should not happen. But it does, see QTCREATORBUG-14755.
# GDB/GCC produce sizeof == 0 for QProcess arr[3]
# And in the Nim string dumper.
arrayByteSize = n * innerType.size()
elif not self.isCdb:
# Do not check the inner type size for cdb since this requires a potentially expensive
# type lookup
n = arrayByteSize // innerType.size()
p = value.address()
if displayFormat != DisplayFormat.Raw and p:
if innerType.name in (
'char',
'int8_t',
'qint8',
'wchar_t',
'unsigned char',
'uint8_t',
'quint8',
'signed char',
'CHAR',
'WCHAR',
'char8_t',
'char16_t',
'char32_t'
):
self.putCharArrayHelper(p, n, innerType, self.currentItemFormat(),
makeExpandable=False)
else:
self.tryPutSimpleFormattedPointer(p, arrayType, innerType,
displayFormat, arrayByteSize)
self.putNumChild(n)
if self.isExpanded():
self.putArrayData(p, n, innerType)
self.putPlotDataHelper(p, n, innerType)
def cleanAddress(self, addr):
if addr is None:
return '<no address>'
return '0x%x' % int(hex(addr), 16)
def stripNamespaceFromType(self, typename):
ns = self.qtNamespace()
if len(ns) > 0 and typename.startswith(ns):
typename = typename[len(ns):]
# self.warn( 'stripping %s' % typename )
lvl = 0
pos = None
stripChunks = []
sz = len(typename)
for index in range(0, sz):
s = typename[index]
if s == '<':
lvl += 1
if lvl == 1:
pos = index
continue
elif s == '>':
lvl -= 1
if lvl < 0:
raise RuntimeError("Unbalanced '<' in type, @index %d" % index)
if lvl == 0:
stripChunks.append((pos, index + 1))
if lvl != 0:
raise RuntimeError("unbalanced at end of type name")
for (f, l) in reversed(stripChunks):
typename = typename[:f] + typename[l:]
return typename
def tryPutPrettyItem(self, typename, value):
value.check()
if self.useFancy and self.currentItemFormat() != DisplayFormat.Raw:
self.putType(typename)
nsStrippedType = self.stripNamespaceFromType(typename)\
.replace('::', '__')
# Strip leading 'struct' for C structs
if nsStrippedType.startswith('struct '):
nsStrippedType = nsStrippedType[7:]
#self.warn('STRIPPED: %s' % nsStrippedType)
# The following block is only needed for D.
if nsStrippedType.startswith('_A'):
# DMD v2.058 encodes string[] as _Array_uns long long.
# With spaces.
if nsStrippedType.startswith('_Array_'):
qdump_Array(self, value)
return True
if nsStrippedType.startswith('_AArray_'):
qdump_AArray(self, value)
return True
dumper = self.qqDumpers.get(nsStrippedType)
#self.warn('DUMPER: %s' % dumper)
if dumper is not None:
dumper(self, value)
return True
for pattern in self.qqDumpersEx.keys():
dumper = self.qqDumpersEx[pattern]
if re.match(pattern, nsStrippedType):
dumper(self, value)
return True
return False
def putSimpleCharArray(self, base, length=None):
if length is None:
length, shown, data = self.readToFirstZero(base, 1, self.displayStringLimit)
else:
shown = self.computeLimit(length)
data = self.readMemory(base, shown)
self.putValue(data, 'latin1', length=length)
def putDisplay(self, editFormat, value):
self.putField('editformat', editFormat)
self.putField('editvalue', value)
# This is shared by pointer and array formatting.
def tryPutSimpleFormattedPointer(self, ptr, typename, innerType, displayFormat, limit):
if displayFormat == DisplayFormat.Automatic:
if self.isCdb or innerType.code is not TypeCode.Typedef:
targetType = innerType
else:
targetType = innerType.target()
if targetType.name in ('char', 'signed char', 'unsigned char', 'uint8_t', 'CHAR'):
# Use UTF-8 as default for char *.
self.putType(typename)
(length, shown, data) = self.readToFirstZero(ptr, 1, limit)
self.putValue(data, 'utf8', length=length)
if self.isExpanded():
self.putArrayData(ptr, shown, innerType)
return True
if targetType.name in ('wchar_t', 'WCHAR'):
self.putType(typename)
charSize = self.lookupType('wchar_t').size()
(length, data) = self.encodeCArray(ptr, charSize, limit)
if charSize == 2:
self.putValue(data, 'utf16', length=length)
else:
self.putValue(data, 'ucs4', length=length)
return True
if displayFormat == DisplayFormat.Latin1String:
self.putType(typename)
(length, data) = self.encodeCArray(ptr, 1, limit)
self.putValue(data, 'latin1', length=length)
return True
if displayFormat == DisplayFormat.SeparateLatin1String:
self.putType(typename)
(length, data) = self.encodeCArray(ptr, 1, limit)
self.putValue(data, 'latin1', length=length)
self.putDisplay('latin1:separate', data)
return True
if displayFormat == DisplayFormat.Utf8String:
self.putType(typename)
(length, data) = self.encodeCArray(ptr, 1, limit)
self.putValue(data, 'utf8', length=length)
return True
if displayFormat == DisplayFormat.SeparateUtf8String:
self.putType(typename)
(length, data) = self.encodeCArray(ptr, 1, limit)
self.putValue(data, 'utf8', length=length)
self.putDisplay('utf8:separate', data)
return True
if displayFormat == DisplayFormat.Local8BitString:
self.putType(typename)
(length, data) = self.encodeCArray(ptr, 1, limit)
self.putValue(data, 'local8bit', length=length)
return True
if displayFormat == DisplayFormat.Utf16String:
self.putType(typename)
(length, data) = self.encodeCArray(ptr, 2, limit)
self.putValue(data, 'utf16', length=length)
return True
if displayFormat == DisplayFormat.Ucs4String:
self.putType(typename)
(length, data) = self.encodeCArray(ptr, 4, limit)
self.putValue(data, 'ucs4', length=length)
return True
return False
def putDerefedPointer(self, value):
derefValue = self.value_dereference(value)
innerType = value.type.target()
self.putType(innerType)
savedCurrentChildType = self.currentChildType
self.currentChildType = innerType.name
derefValue.name = '*'
derefValue.autoDerefCount = value.autoDerefCount + 1
if derefValue.type.code != TypeCode.Pointer:
self.putField('autoderefcount', '{}'.format(derefValue.autoDerefCount))
self.putItem(derefValue)
self.currentChildType = savedCurrentChildType
def putFormattedPointer(self, value):
self.putOriginalAddress(value.address())
#self.warn("PUT FORMATTED: %s" % value)
pointer = self.value_as_address(value)
self.putAddress(pointer)
#self.warn('POINTER: 0x%x' % pointer)
if pointer == 0:
#self.warn('NULL POINTER')
self.putType(value.typeid)
self.putValue('0x0')
return
typename = self.type_name(value.typeid)
try:
self.readRawMemory(pointer, 1)
except:
# Failure to dereference a pointer should at least
# show the value of a pointer.
#self.warn('BAD POINTER: %s' % value)
self.putValue('0x%x' % pointer)
self.putType(typename)
return
if self.currentIName.endswith('.this'):
self.putDerefedPointer(value)
return
displayFormat = self.currentItemFormat(typename)
innerType = value.type.target()
if innerType.name == 'void':
#self.warn('VOID POINTER: %s' % displayFormat)
self.putType(typename)
self.putSymbolValue(pointer)
return
if displayFormat == DisplayFormat.Raw:
# Explicitly requested bald pointer.
#self.warn('RAW')
self.putType(typename)
self.putValue('0x%x' % pointer)
self.putExpandable()
if self.currentIName in self.expandedINames:
with Children(self):
with SubItem(self, '*'):
self.putItem(value.dereference())
return
limit = self.displayStringLimit
if displayFormat in (DisplayFormat.SeparateLatin1String, DisplayFormat.SeparateUtf8String):
limit = 1000000
if self.tryPutSimpleFormattedPointer(pointer, typename,
innerType, displayFormat, limit):
self.putExpandable()
return
if DisplayFormat.Array10 <= displayFormat and displayFormat <= DisplayFormat.Array10000:
n = (10, 100, 1000, 10000)[displayFormat - DisplayFormat.Array10]
self.putType(typename)
self.putItemCount(n)
self.putArrayData(self.value_as_address(value), n, innerType)
return
if innerType.code == TypeCode.Function:
# A function pointer.
self.putSymbolValue(pointer)
self.putType(typename)
return
#self.warn('AUTODEREF: %s' % self.autoDerefPointers)
#self.warn('INAME: %s' % self.currentIName)
#self.warn('INNER: %s' % innerType.name)
if self.autoDerefPointers:
# Generic pointer type with AutomaticFormat, but never dereference char types:
if innerType.name not in (
'char',
'signed char',
'int8_t',
'qint8',
'unsigned char',
'uint8_t',
'quint8',
'wchar_t',
'CHAR',
'WCHAR',
'char8_t',
'char16_t',
'char32_t'
):
self.putDerefedPointer(value)
return
#self.warn('GENERIC PLAIN POINTER: %s' % value.type)
#self.warn('ADDR PLAIN POINTER: 0x%x' % value.laddress)
self.putType(typename)
self.putSymbolValue(pointer)
self.putExpandable()
if self.currentIName in self.expandedINames:
with Children(self):
with SubItem(self, '*'):
self.putItem(value.dereference())
def putOriginalAddress(self, address):
if address is not None:
self.put('origaddr="0x%x",' % address)
def wantQObjectNames(self):
return self.showQObjectNames and self.qtLoaded
def fetchInternalFunctions(self):
# Overrridden
pass
def putQObjectNameValue(self, value):
is_qobject_based = self.type_qobject_based_cache.get(value.typeid, None)
if is_qobject_based == False:
#self.warn("SKIP TEST OBJNAME: %s" % self.type_name(value.typeid))
return
#self.warn("TEST OBJNAME: %s" % self.type_name(value.typeid))
self.fetchInternalFunctions()
try:
# dd = value['d_ptr']['d'] is just behind the vtable.
(vtable, dd) = self.split('pp', value)
if not self.couldBeQObjectVTable(vtable):
return False
intSize = 4
ptrSize = self.ptrSize()
if self.qtVersionAtLeast(0x060000):
# Size of QObjectData: 9 pointer + 2 int
# - vtable
# - QObject *q_ptr;
# - QObject *parent;
# - QObjectList children;
# - uint isWidget : 1; etc...
# - int postedEvents;
# - QDynamicMetaObjectData *metaObject;
# - QBindingStorage bindingStorage;
extra = self.extract_pointer_at_address(dd + 9 * ptrSize + 2 * intSize)
if extra == 0:
return False
# Offset of objectName in ExtraData: 12 pointer
# - QList<QByteArray> propertyNames;
# - QList<QVariant> propertyValues;
# - QVector<int> runningTimers;
# - QList<QPointer<QObject> > eventFilters;
# - QString objectName
objectNameAddress = extra + 12 * ptrSize
elif self.qtVersionAtLeast(0x050000):
# Size of QObjectData: 5 pointer + 2 int
# - vtable
# - QObject *q_ptr;
# - QObject *parent;
# - QObjectList children;
# - uint isWidget : 1; etc...
# - int postedEvents;
# - QDynamicMetaObjectData *metaObject;
extra = self.extract_pointer_at_address(dd + 5 * ptrSize + 2 * intSize)
if extra == 0:
return False
# Offset of objectName in ExtraData: 6 pointer
# - QVector<QObjectUserData *> userData; only #ifndef QT_NO_USERDATA
# - QList<QByteArray> propertyNames;
# - QList<QVariant> propertyValues;
# - QVector<int> runningTimers;
# - QList<QPointer<QObject> > eventFilters;
# - QString objectName
objectNameAddress = extra + 5 * ptrSize
else:
# Size of QObjectData: 5 pointer + 2 int
# - vtable
# - QObject *q_ptr;
# - QObject *parent;
# - QObjectList children;
# - uint isWidget : 1; etc..
# - int postedEvents;
# - QMetaObject *metaObject;
# Offset of objectName in QObjectPrivate: 5 pointer + 2 int
# - [QObjectData base]
# - QString objectName
objectNameAddress = dd + 5 * ptrSize + 2 * intSize
data, size, alloc = self.qArrayData(objectNameAddress)
# Object names are short, and GDB can crash on to big chunks.
# Since this here is a convenience feature only, limit it.
if size <= 0 or size > 80:
return False
raw = self.readMemory(data, 2 * size)
self.putValue(raw, 'utf16', 1)
return True
except:
# warn('NO QOBJECT: %s' % value.type)
return False
def couldBePointer(self, p):
if self.ptrSize() == 4:
return p > 100000 and (p & 0x3 == 0)
else:
return p > 100000 and (p & 0x7 == 0) and (p < 0x7fffffffffff)
def couldBeVTableEntry(self, p):
if self.ptrSize() == 4:
return p > 100000 and (p & 0x1 == 0)
else:
return p > 100000 and (p & 0x1 == 0) and (p < 0x7fffffffffff)
def couldBeQObjectPointer(self, objectPtr):
try:
vtablePtr, dd = self.split('pp', objectPtr)
except:
self.bump('nostruct-1')
return False
try:
dvtablePtr, qptr, parentPtr = self.split('ppp', dd)
except:
self.bump('nostruct-2')
return False
# Check d_ptr.d.q_ptr == objectPtr
if qptr != objectPtr:
self.bump('q_ptr')
return False
return self.couldBeQObjectVTable(vtablePtr)
def couldBeQObjectVTable(self, vtablePtr):
def getJumpAddress_x86(dumper, address):
relativeJumpCode = 0xe9
jumpCode = 0xff
try:
data = dumper.readRawMemory(address, 6)
except:
return 0
primaryOpcode = data[0]
if primaryOpcode == relativeJumpCode:
# relative jump on 32 and 64 bit with a 32bit offset
offset = int.from_bytes(data[1:5], byteorder='little')
return address + 5 + offset
if primaryOpcode == jumpCode:
if data[1] != 0x25: # check for known extended opcode
return 0
# 0xff25 is a relative jump on 64bit and an absolute jump on 32 bit
if self.ptrSize() == 8:
offset = int.from_bytes(data[2:6], byteorder='little')
return address + 6 + offset
else:
return int.from_bytes(data[2:6], byteorder='little')
return 0
# Do not try to extract a function pointer if there are no values to compare with
if self.qtCustomEventFunc == 0 and self.qtCustomEventPltFunc == 0:
return False
try:
customEventOffset = 8 if self.isMsvcTarget() else 9
customEventFunc = self.extract_pointer_at_address(vtablePtr + customEventOffset * self.ptrSize())
except:
self.bump('nostruct-3')
return False
if self.isWindowsTarget():
if customEventFunc in (self.qtCustomEventFunc, self.qtCustomEventPltFunc):
return True
# The vtable may point to a function that is just calling the customEvent function
customEventFunc = getJumpAddress_x86(self, customEventFunc)
if customEventFunc in (self.qtCustomEventFunc, self.qtCustomEventPltFunc):
return True
customEventFunc = self.extract_pointer_at_address(customEventFunc)
if customEventFunc in (self.qtCustomEventFunc, self.qtCustomEventPltFunc):
return True
# If the object is defined in another module there may be another level of indirection
customEventFunc = getJumpAddress_x86(self, customEventFunc)
return customEventFunc in (self.qtCustomEventFunc, self.qtCustomEventPltFunc)
# def extractQObjectProperty(objectPtr):
# vtablePtr = self.extract_pointer_at_address(objectPtr)
# metaObjectFunc = self.extract_pointer_at_address(vtablePtr)
# cmd = '((void*(*)(void*))0x%x)((void*)0x%x)' % (metaObjectFunc, objectPtr)
# try:
# #self.warn('MO CMD: %s' % cmd)
# res = self.parseAndEvaluate(cmd)
# #self.warn('MO RES: %s' % res)
# self.bump('successfulMetaObjectCall')
# return self.value_as_address(res)
# except:
# self.bump('failedMetaObjectCall')
# #self.warn('COULD NOT EXECUTE: %s' % cmd)
# return 0
def extractMetaObjectPtr(self, objectPtr, typeobj):
""" objectPtr - address of *potential* instance of QObject derived class
typeobj - type of *objectPtr if known, None otherwise. """
if objectPtr is not None:
self.checkIntType(objectPtr)
def extractMetaObjectPtrFromAddress():
#return 0
# FIXME: Calling 'works' but seems to impact memory contents(!)
# in relevant places. One symptom is that object name
# contents 'vanishes' as the reported size of the string
# gets zeroed out(?).
# Try vtable, metaObject() is the first entry.
vtablePtr = self.extract_pointer_at_address(objectPtr)
metaObjectFunc = self.extract_pointer_at_address(vtablePtr)
cmd = '((void*(*)(void*))0x%x)((void*)0x%x)' % (metaObjectFunc, objectPtr)
try:
#self.warn('MO CMD: %s' % cmd)
res = self.parseAndEvaluate(cmd)
#self.warn('MO RES: %s' % res)
self.bump('successfulMetaObjectCall')
return self.value_as_address(res)
except:
self.bump('failedMetaObjectCall')
#self.warn('COULD NOT EXECUTE: %s' % cmd)
return 0
def extractStaticMetaObjectFromTypeHelper(someTypeObj):
if someTypeObj.isSimpleType():
return 0
typename = someTypeObj.name
isQObjectProper = typename == self.qtNamespace() + 'QObject'
# No templates for now.
if typename.find('<') >= 0:
return 0
result = self.findStaticMetaObject(someTypeObj)
# We need to distinguish Q_OBJECT from Q_GADGET:
# a Q_OBJECT SMO has a non-null superdata (unless it's QObject itself),
# a Q_GADGET SMO has a null superdata (hopefully)
if result and not isQObjectProper:
if self.qtVersionAtLeast(0x60000) and self.isWindowsTarget():
(direct, indirect) = self.split('pp', result)
# since Qt 6 there is an additional indirect super data getter on windows
if direct == 0 and indirect == 0:
# This looks like a Q_GADGET
return 0
else:
if self.extractPointer(result) == 0:
# This looks like a Q_GADGET
return 0
return result
def extractStaticMetaObjectPtrFromType(someTypeObj):
if someTypeObj is None:
return 0
someTypeName = someTypeObj.name
self.bump('metaObjectFromType')
known = self.knownStaticMetaObjects.get(someTypeName, None)
if known is not None: # Is 0 or the static metaobject.
return known
result = 0
#try:
result = extractStaticMetaObjectFromTypeHelper(someTypeObj)
#except RuntimeError as error:
# warn('METAOBJECT EXTRACTION FAILED: %s' % error)
#except:
# warn('METAOBJECT EXTRACTION FAILED FOR UNKNOWN REASON')
#if not result:
# base = someTypeObj.firstBase()
# if base is not None and base != someTypeObj: # sanity check
# result = extractStaticMetaObjectPtrFromType(base)
if result:
self.knownStaticMetaObjects[someTypeName] = result
return result
if not self.useFancy:
return 0
ptrSize = self.ptrSize()
typename = typeobj.name
result = self.knownStaticMetaObjects.get(typename, None)
if result is not None: # Is 0 or the static metaobject.
self.bump('typecached')
#self.warn('CACHED RESULT: %s %s 0x%x' % (self.currentIName, typename, result))
return result
if not self.couldBeQObjectPointer(objectPtr):
self.bump('cannotBeQObject')
#self.warn('DOES NOT LOOK LIKE A QOBJECT: %s' % self.currentIName)
return 0
metaObjectPtr = 0
if not metaObjectPtr:
# measured: 3 ms (example had one level of inheritance)
#with self.timer('metaObjectType-' + self.currentIName):
metaObjectPtr = extractStaticMetaObjectPtrFromType(typeobj)
if not metaObjectPtr and not self.isWindowsTarget():
# measured: 200 ms (example had one level of inheritance)
#with self.timer('metaObjectCall-' + self.currentIName):
metaObjectPtr = extractMetaObjectPtrFromAddress()
#if metaObjectPtr:
# self.bump('foundMetaObject')
# self.8;
return metaObjectPtr
def extractCString(self, addr):
result = bytearray()
while True:
d = bytes(self.readRawMemory(addr, 1))
if d[0] == 0:
break
result += d
addr += 1
return result
def listData(self, value, check=True):
if self.qtVersionAtLeast(0x60000):
dd, data, size = self.split('ppi', value)
return data, size
base = self.extractPointer(value)
(ref, alloc, begin, end) = self.split('IIII', base)
array = base + 16
if not self.qtVersionAtLeast(0x50000):
array += self.ptrSize()
size = end - begin
if check:
self.check(begin >= 0 and end >= 0 and end <= 1000 * 1000 * 1000)
size = end - begin
self.check(size >= 0)
stepSize = self.ptrSize()
data = array + begin * stepSize
return data, size
def putTypedPointer(self, name, addr, typename):
""" Prints a typed pointer, expandable if the type can be resolved,
and without children otherwise """
with SubItem(self, name):
self.putAddress(addr)
self.putValue('@0x%x' % addr)
typeObj = self.lookupType(typename)
if typeObj:
self.putType(typeObj)
self.putExpandable()
if self.isExpanded():
with Children(self):
self.putFields(self.createValueFromAddress(addr, typeObj))
else:
self.putType(typename)
# This is called is when a QObject derived class is expanded
def tryPutQObjectGuts(self, value):
metaObjectPtr = self.extractMetaObjectPtr(value.address(), value.type)
if metaObjectPtr:
self.putQObjectGutsHelper(value, value.address(),
-1, metaObjectPtr, 'QObject')
def metaString(self, metaObjectPtr, index, revision):
ptrSize = self.ptrSize()
stringdataOffset = ptrSize
if self.isWindowsTarget() and self.qtVersionAtLeast(0x060000):
stringdataOffset += ptrSize # indirect super data member
stringdata = self.extract_pointer_at_address(int(metaObjectPtr) + stringdataOffset)
def unpack_string(base, size):
try:
s = struct.unpack_from('%ds' % size, self.readRawMemory(base, size))[0]
return s.decode('utf8')
except:
return '<not available>'
if revision >= 9: # Qt 6.
pos, size = self.split('II', stringdata + 8 * index)
return unpack_string(stringdata + pos, size)
if revision >= 7: # Qt 5.
byteArrayDataSize = 24 if ptrSize == 8 else 16
literal = stringdata + int(index) * byteArrayDataSize
base, size, _ = self.qArrayDataHelper(literal)
return unpack_string(base, size)
ldata = stringdata + index
return self.extractCString(ldata).decode('utf8')
def putSortGroup(self, sortorder):
if not self.isCli:
self.putField('sortgroup', sortorder)
def putQMetaStuff(self, value, origType):
if self.qtVersionAtLeast(0x060000):
metaObjectPtr, handle = value.split('pp')
else:
metaObjectPtr, handle = value.split('pI')
if metaObjectPtr != 0:
if self.qtVersionAtLeast(0x060000):
if handle == 0:
self.putEmptyValue()
return
revision = 9
name, alias, flags, keyCount, data = self.split('IIIII', handle)
index = name
elif self.qtVersionAtLeast(0x050000):
revision = 7
dataPtr = self.extract_pointer_at_address(metaObjectPtr + 2 * self.ptrSize())
index = self.extractInt(dataPtr + 4 * handle)
else:
revision = 6
dataPtr = self.extract_pointer_at_address(metaObjectPtr + 2 * self.ptrSize())
index = self.extractInt(dataPtr + 4 * handle)
#self.putValue("index: %s rev: %s" % (index, revision))
name = self.metaString(metaObjectPtr, index, revision)
self.putValue(name)
self.putExpandable()
if self.isExpanded():
with Children(self):
self.putFields(value)
self.putQObjectGutsHelper(0, 0, handle, metaObjectPtr, origType)
else:
self.putEmptyValue()
if self.isExpanded():
with Children(self):
self.putFields(value)
# basically all meta things go through this here.
# qobject and qobjectPtr are non-null if coming from a real structure display
# qobject == 0, qobjectPtr != 0 is possible for builds without QObject debug info
# if qobject == 0, properties and d-ptr cannot be shown.
# handle is what's store in QMetaMethod etc, pass -1 for QObject/QMetaObject
# itself metaObjectPtr needs to point to a valid QMetaObject.
def putQObjectGutsHelper(self, qobject, qobjectPtr, handle, metaObjectPtr, origType):
ptrSize = self.ptrSize()
def putt(name, value, typename=' '):
with SubItem(self, name):
self.putValue(value)
self.putType(typename)
def extractSuperDataPtr(someMetaObjectPtr):
#return someMetaObjectPtr['d']['superdata']
return self.extract_pointer_at_address(someMetaObjectPtr)
def extractDataPtr(someMetaObjectPtr):
# dataPtr = metaObjectPtr['d']['data']
if self.qtVersionAtLeast(0x60000) and self.isWindowsTarget():
offset = 3
else:
offset = 2
return self.extract_pointer_at_address(someMetaObjectPtr + offset * ptrSize)
isQMetaObject = origType == 'QMetaObject'
isQObject = origType == 'QObject'
#self.warn('OBJECT GUTS: %s 0x%x ' % (self.currentIName, metaObjectPtr))
dataPtr = extractDataPtr(metaObjectPtr)
#self.warn('DATA PTRS: %s 0x%x ' % (self.currentIName, dataPtr))
(revision, classname,
classinfo, classinfo2,
methodCount, methods,
propertyCount, properties,
enumCount, enums,
constructorCount, constructors,
flags, signalCount) = self.split('I' * 14, dataPtr)
largestStringIndex = -1
for i in range(methodCount):
t = self.split('IIIII', dataPtr + 56 + i * 20)
if largestStringIndex < t[0]:
largestStringIndex = t[0]
ns = self.qtNamespace()
extraData = 0
if qobjectPtr:
dd = self.extract_pointer_at_address(qobjectPtr + ptrSize)
if self.qtVersionAtLeast(0x60000):
(dvtablePtr, qptr, parent, children, bindingStorageData, bindingStatus,
flags, postedEvents, dynMetaObjectPtr, # Up to here QObjectData.
extraData, threadDataPtr, connectionListsPtr,
sendersPtr, currentSenderPtr) \
= self.split('pp{@QObject*}{@QList<@QObject *>}ppIIp' + 'ppppp', dd)
elif self.qtVersionAtLeast(0x50000):
(dvtablePtr, qptr, parent, children, flags, postedEvents,
dynMetaObjectPtr, # Up to here QObjectData.
extraData, threadDataPtr, connectionListsPtr,
sendersPtr, currentSenderPtr) \
= self.split('pp{@QObject*}{@QList<@QObject *>}IIp' + 'ppppp', dd)
else:
(dvtablePtr, qptr, parent, children, flags, postedEvents,
dynMetaObjectPtr, # Up to here QObjectData
objectName, extraData, threadDataPtr, connectionListsPtr,
sendersPtr, currentSenderPtr) \
= self.split('pp{@QObject*}{@QList<@QObject *>}IIp' + 'pppppp', dd)
with SubItem(self, '[parent]'):
if not self.isCli:
self.putSortGroup(9)
self.putItem(parent)
with SubItem(self, '[children]'):
if not self.isCli:
self.putSortGroup(8)
dvtablePtr, qptr, parentPtr, children = self.split('ppp{@QList<@QObject *>}', dd)
self.putItem(children)
if isQMetaObject:
with SubItem(self, '[strings]'):
if not self.isCli:
self.putSortGroup(2)
if largestStringIndex > 0:
self.putSpecialValue('minimumitemcount', largestStringIndex)
self.putExpandable()
if self.isExpanded():
with Children(self, largestStringIndex + 1):
for i in self.childRange():
with SubItem(self, i):
s = self.metaString(metaObjectPtr, i, revision)
self.putValue(self.hexencode(s), 'latin1')
else:
self.putValue(' ')
if isQMetaObject:
with SubItem(self, '[raw]'):
self.putSortGroup(1)
self.putEmptyValue()
self.putExpandable()
if self.isExpanded():
with Children(self):
putt('revision', revision)
putt('classname', classname)
putt('classinfo', classinfo)
putt('methods', '%d %d' % (methodCount, methods))
putt('properties', '%d %d' % (propertyCount, properties))
putt('enums/sets', '%d %d' % (enumCount, enums))
putt('constructors', '%d %d' % (constructorCount, constructors))
putt('flags', flags)
putt('signalCount', signalCount)
for i in range(methodCount):
t = self.split('IIIII', dataPtr + 56 + i * 20)
putt('method %d' % i, '%s %s %s %s %s' % t)
if isQObject:
with SubItem(self, '[extra]'):
self.putSortGroup(1)
self.putEmptyValue()
self.putExpandable()
if self.isExpanded():
with Children(self):
if extraData:
self.putTypedPointer('[extraData]', extraData,
ns + 'QObjectPrivate::ExtraData')
with SubItem(self, '[metaObject]'):
self.putAddress(metaObjectPtr)
self.putExpandable()
if self.isExpanded():
with Children(self):
self.putQObjectGutsHelper(
0, 0, -1, metaObjectPtr, 'QMetaObject')
if False:
with SubItem(self, '[connections]'):
if connectionListsPtr:
typename = '@QObjectConnectionListVector'
self.putItem(self.createValueFromAddress(connectionListsPtr,
typename))
else:
self.putItemCount(0)
if False:
with SubItem(self, '[signals]'):
self.putItemCount(signalCount)
if self.isExpanded():
with Children(self):
j = -1
for i in range(signalCount):
t = self.split('IIIII', dataPtr + 56 + 20 * i)
flags = t[4]
if flags != 0x06:
continue
j += 1
with SubItem(self, j):
name = self.metaString(
metaObjectPtr, t[0], revision)
self.putType(' ')
self.putValue(name)
self.putExpandable()
with Children(self):
putt('[nameindex]', t[0])
#putt('[type]', 'signal')
putt('[argc]', t[1])
putt('[parameter]', t[2])
putt('[tag]', t[3])
putt('[flags]', t[4])
putt('[localindex]', str(i))
putt('[globalindex]', str(globalOffset + i))
#self.putQObjectConnections(dd)
if isQMetaObject or isQObject:
with SubItem(self, '[properties]'):
self.putSortGroup(5)
if self.isExpanded():
dynamicPropertyCount = 0
with Children(self):
# Static properties.
for i in range(propertyCount):
if self.qtVersionAtLeast(0x60000):
t = self.split('IIIII', dataPtr + properties * 4 + 20 * i)
else:
t = self.split('III', dataPtr + properties * 4 + 12 * i)
name = self.metaString(metaObjectPtr, t[0], revision)
if qobject and self.qtPropertyFunc:
# LLDB doesn't like calling it on a derived class, possibly
# due to type information living in a different shared object.
#base = self.createValueFromAddress(qobjectPtr, '@QObject')
#self.warn("CALL FUNC: 0x%x" % self.qtPropertyFunc)
cmd = '((QVariant(*)(void*,char*))0x%x)((void*)0x%x,"%s")' \
% (self.qtPropertyFunc, qobjectPtr, name)
try:
#self.warn('PROP CMD: %s' % cmd)
res = self.parseAndEvaluate(cmd)
#self.warn('PROP RES: %s' % res)
except:
self.bump('failedMetaObjectCall')
putt(name, ' ')
continue
#self.warn('COULD NOT EXECUTE: %s' % cmd)
#self.putCallItem(name, '@QVariant', base, 'property', '"' + name + '"')
if res is None:
self.bump('failedMetaObjectCall2')
putt(name, ' ')
continue
self.putSubItem(name, res)
else:
putt(name, ' ')
# Dynamic properties.
if extraData:
def list6Generator(addr, inner_typeid):
data, size = self.listData(addr)
inner_size = self.type_size(inner_typeid)
for i in range(size):
yield self.createValueFromAddress(data, inner_typeid)
data += inner_size
def list5Generator(addr, inner_typeid):
data, size = self.listData(addr)
for i in range(size):
yield self.createValueFromAddress(data, inner_typeid)
data += ptrSize
def vectorGenerator(addr, inner_typeid):
data, size = self.vectorData(addr)
inner_size = self.type_size(inner_typeid)
for i in range(size):
yield self.createValueFromAddress(data, inner_typeid)
data += inner_size
variant_typeid = self.cheap_typeid_from_name('@QVariant')
if self.qtVersionAtLeast(0x60000):
values = vectorGenerator(extraData + 3 * ptrSize, variant_typeid)
elif self.qtVersionAtLeast(0x50600):
values = vectorGenerator(extraData + 2 * ptrSize, variant_typeid)
elif self.qtVersionAtLeast(0x50000):
values = list5Generator(extraData + 2 * ptrSize, variant_typeid)
else:
variantptr_typeid = self.cheap_typeid_from_name('@QVariant')
values = list5Generator(extraData + 2 * ptrSize, variantptr_typeid)
bytearray_typeid = self.cheap_typeid_from_name('@QByteArray')
if self.qtVersionAtLeast(0x60000):
names = list6Generator(extraData, bytearray_typeid)
else:
names = list5Generator(extraData + ptrSize, bytearray_typeid)
for (k, v) in zip(names, values):
with SubItem(self, propertyCount + dynamicPropertyCount):
if not self.isCli:
self.putField('key', self.encodeByteArray(k))
self.putField('keyencoded', 'latin1')
self.putItem(v)
dynamicPropertyCount += 1
self.putItemCount(propertyCount + dynamicPropertyCount)
else:
# We need a handle to [x] for the user to expand the item
# before we know whether there are actual children. Counting
# them is too expensive.
self.putSpecialValue('minimumitemcount', propertyCount)
self.putExpandable()
superDataPtr = extractSuperDataPtr(metaObjectPtr)
globalOffset = 0
superDataIterator = superDataPtr
while superDataIterator:
sdata = extractDataPtr(superDataIterator)
globalOffset += self.extractInt(sdata + 16) # methodCount member
superDataIterator = extractSuperDataPtr(superDataIterator)
if isQMetaObject or isQObject:
with SubItem(self, '[methods]'):
self.putSortGroup(3)
self.putItemCount(methodCount)
if self.isExpanded():
with Children(self):
for i in range(methodCount):
t = self.split('IIIII', dataPtr + 56 + 20 * i)
name = self.metaString(metaObjectPtr, t[0], revision)
with SubItem(self, i):
self.putValue(name)
self.putType(' ')
self.putNumChild(1)
isSignal = False
flags = t[4]
if flags == 0x06:
typ = 'signal'
isSignal = True
elif flags == 0x0a:
typ = 'slot'
elif flags == 0x0a:
typ = 'invokable'
else:
typ = '<unknown>'
with Children(self):
putt('[nameindex]', t[0])
putt('[type]', typ)
putt('[argc]', t[1])
putt('[parameter]', t[2])
putt('[tag]', t[3])
putt('[flags]', t[4])
putt('[localindex]', str(i))
putt('[globalindex]', str(globalOffset + i))
if isQObject:
with SubItem(self, '[d]'):
self.putItem(self.createValueFromAddress(dd, '@QObjectPrivate'))
self.putSortGroup(15)
if isQMetaObject:
with SubItem(self, '[superdata]'):
self.putSortGroup(12)
if superDataPtr:
self.putType('@QMetaObject')
self.putAddress(superDataPtr)
self.putExpandable()
if self.isExpanded():
with Children(self):
self.putQObjectGutsHelper(0, 0, -1, superDataPtr, 'QMetaObject')
else:
self.putType('@QMetaObject *')
self.putValue('0x0')
if handle >= 0:
localIndex = int((handle - methods) / 5)
with SubItem(self, '[localindex]'):
self.putSortGroup(12)
self.putValue(localIndex)
with SubItem(self, '[globalindex]'):
self.putSortGroup(11)
self.putValue(globalOffset + localIndex)
def putQObjectConnections(self, dd):
with SubItem(self, '[connections]'):
ptrSize = self.ptrSize()
self.putNoType()
privateType = self.create_typeid_from_name('@QObjectPrivate')
d_ptr = dd.cast(privateType.pointer()).dereference()
connections = d_ptr['connectionLists']
if self.value_as_integer(connections) == 0:
self.putItemCount(0)
else:
connections = connections.dereference()
#connections = connections.cast(connections.type.firstBase())
self.putSpecialValue('minimumitemcount', 0)
self.putExpandable()
if self.isExpanded():
pp = 0
with Children(self):
innerType = connections.type[0]
# Should check: innerType == ns::QObjectPrivate::ConnectionList
data, size = self.vectorData(connections)
connection_typeid = self.create_typeid_from_name('@QObjectPrivate::Connection')
connection_ptr_typeid = self.create_pointer_typeid(connection_typeid)
for i in range(size):
first = self.extract_pointer_at_address(data + i * 2 * ptrSize)
while first:
val = self.Value(self)
val.ldata = first
val.typeid = connection_typeid
self.putSubItem('%s' % pp, val)
first = self.extract_pointer_at_address(first + 3 * ptrSize)
# We need to enforce some upper limit.
pp += 1
if pp > 1000:
break
def currentItemFormat(self, typename=None):
displayFormat = self.formats.get(self.currentIName, DisplayFormat.Automatic)
if displayFormat == DisplayFormat.Automatic:
if typename is None:
typename = self.currentType.value
needle = None if typename is None else self.stripForFormat(typename)
displayFormat = self.typeformats.get(needle, DisplayFormat.Automatic)
return displayFormat
def putSubItem(self, component, value): # -> ReportItem
if not isinstance(value, self.Value):
raise RuntimeError('WRONG VALUE TYPE IN putSubItem: %s' % type(value))
res = None
with SubItem(self, component):
self.putItem(value)
res = self.currentValue
return res # The 'short' display.
def putArrayData(self, base, n, inner_typish, childNumChild=None):
self.checkIntType(base)
self.checkIntType(n)
inner_typeid = self.typeid_for_typish(inner_typish)
inner_size = self.type_size(inner_typeid)
self.putNumChild(n)
#self.warn('ADDRESS: 0x%x INNERSIZE: %s INNERTYPE: %s' % (base, inner_size, inner_typeid))
enc = self.type_encoding_cache.get(inner_typeid, None)
maxNumChild = self.maxArrayCount()
if enc:
self.put('childtype="%s",' % self.type_name(inner_typeid))
self.put('addrbase="0x%x",' % base)
self.put('addrstep="0x%x",' % inner_size)
self.put('arrayencoding="%s",' % enc)
self.put('endian="%s",' % self.packCode)
if n > maxNumChild:
self.put('childrenelided="%s",' % n)
n = maxNumChild
self.put('arraydata="')
self.put(self.readMemory(base, n * inner_size))
self.put('",')
else:
innerType = self.Type(self, inner_typeid)
with Children(self, n, innerType, childNumChild, maxNumChild,
addrBase=base, addrStep=inner_size):
for i in self.childRange():
self.putSubItem(i, self.createValueFromAddress(base + i * inner_size, innerType))
def putArrayItem(self, name, addr, n, typename):
self.checkIntType(addr)
self.checkIntType(n)
with SubItem(self, name):
self.putEmptyValue()
self.putType('%s [%d]' % (typename, n))
self.putArrayData(addr, n, self.lookupType(typename))
self.putAddress(addr)
def putPlotDataHelper(self, base, n, innerType, maxNumChild=1000 * 1000):
if n > maxNumChild:
self.putField('plotelided', n) # FIXME: Act on that in frontend
n = maxNumChild
if self.currentItemFormat() == DisplayFormat.ArrayPlot and innerType.isSimpleType():
enc = innerType.simpleEncoding()
if enc:
self.putField('editencoding', enc)
self.putDisplay('plotdata:separate',
self.readMemory(base, n * innerType.size()))
def putPlotData(self, base, n, innerType, maxNumChild=1000 * 1000):
self.putPlotDataHelper(base, n, innerType, maxNumChild=maxNumChild)
if self.isExpanded():
self.putArrayData(base, n, innerType)
def putSpecialArgv(self, value):
"""
Special handling for char** argv.
"""
ptr_size = self.ptrSize()
n = 0
argv = self.value_as_address(value)
# argv is 0 for "optimized out" cases. Or contains rubbish.
try:
if argv:
p = argv
while self.extract_pointer_at_address(p) and n <= 100:
p += ptr_size
n += 1
except:
pass
with TopLevelItem(self, 'local.argv'):
self.put('iname="local.argv",name="argv",')
self.putItemCount(n, 100)
self.putType('char **')
if self.currentIName in self.expandedINames:
p = value
with Children(self, n):
for i in range(n):
self.putSubItem(i, p.dereference())
p += 1
def extract_pointer_at_address(self, address):
blob = self.value_data_from_address(address, self.ptrSize())
return int.from_bytes(blob, byteorder='little')
def value_extract_integer(self, value, size, signed):
if isinstance(value.lvalue, int):
return value.lvalue
if isinstance(value.ldata, int):
return value.ldata
#with self.dumper.timer('extractInt'):
value.check()
blob = self.value_data(value, size)
return int.from_bytes(blob, byteorder='little', signed=signed)
def value_extract_something(self, valuish, size, signed=False):
if isinstance(valuish, int):
blob = self.value_data_from_address(valuish, size)
elif isinstance(valuish, self.Value):
blob = self.value_data(valuish, size)
else:
raise RuntimeError('CANT EXTRACT FROM %s' % type(valuish))
res = int.from_bytes(blob, byteorder='little', signed=signed)
#self.warn("EXTRACTED %s SIZE %s FROM %s" % (res, size, blob))
return res
def extractPointer(self, value):
return self.value_extract_something(value, self.ptrSize())
def extractInt64(self, value):
return self.value_extract_something(value, 8, True)
def extractUInt64(self, value):
return self.value_extract_something(value, 8)
def extractInt(self, value):
return self.value_extract_something(value, 4, True)
def extractUInt(self, value):
return self.value_extract_something(value, 4)
def extractShort(self, value):
return self.value_extract_something(value, 2, True)
def extractUShort(self, value):
return self.value_extract_something(value, 2)
def extractByte(self, value):
return self.value_extract_something(value, 1)
# Parses a..b and a.(s).b
def parseRange(self, exp):
# Search for the first unbalanced delimiter in s
def searchUnbalanced(s, upwards):
paran = 0
bracket = 0
if upwards:
open_p, close_p, open_b, close_b = '(', ')', '[', ']'
else:
open_p, close_p, open_b, close_b = ')', '(', ']', '['
for i in range(len(s)):
c = s[i]
if c == open_p:
paran += 1
elif c == open_b:
bracket += 1
elif c == close_p:
paran -= 1
if paran < 0:
return i
elif c == close_b:
bracket -= 1
if bracket < 0:
return i
return len(s)
match = re.search(r'(\.)(\(.+?\))?(\.)', exp)
if match:
s = match.group(2)
left_e = match.start(1)
left_s = 1 + left_e - searchUnbalanced(exp[left_e::-1], False)
right_s = match.end(3)
right_e = right_s + searchUnbalanced(exp[right_s:], True)
template = exp[:left_s] + '%s' + exp[right_e:]
a = exp[left_s:left_e]
b = exp[right_s:right_e]
try:
# Allow integral expressions.
ss = self.value_as_integer(self.parseAndEvaluate(s[1:len(s) - 1])) if s else 1
aa = self.value_as_integer(self.parseAndEvaluate(a))
bb = self.value_as_integer(self.parseAndEvaluate(b))
if aa < bb and ss > 0:
return True, aa, ss, bb + 1, template
except:
pass
return False, 0, 1, 1, exp
def putNumChild(self, numchild):
if numchild != self.currentChildNumChild:
self.putField('numchild', numchild)
def handleLocals(self, variables):
#self.warn('VARIABLES: %s' % variables)
shadowed = {}
for value in variables:
if value.name == 'argv':
if value.type.code == TypeCode.Pointer:
target = value.type.target()
if target.code == TypeCode.Pointer:
if target.target().name == 'char':
self.putSpecialArgv(value)
continue
name = value.name
if name in shadowed:
level = shadowed[name]
shadowed[name] = level + 1
name += '@%d' % level
else:
shadowed[name] = 1
# A 'normal' local variable or parameter.
iname = value.iname if hasattr(value, 'iname') else 'local.' + name
with TopLevelItem(self, iname):
#with self.timer('all-' + iname):
self.putField('iname', iname)
self.putField('name', name)
self.putItem(value)
def handleWatches(self, args):
#with self.timer('watches'):
for watcher in args.get('watchers', []):
iname = watcher['iname']
exp = self.hexdecode(watcher['exp'])
self.handleWatch(exp, exp, iname)
def handleWatch(self, origexp, exp, iname):
exp = str(exp).strip()
escapedExp = self.hexencode(exp)
#self.warn('HANDLING WATCH %s -> %s, INAME: "%s"' % (origexp, exp, iname))
# Grouped items separated by semicolon.
if exp.find(';') >= 0:
exps = exp.split(';')
n = len(exps)
with TopLevelItem(self, iname):
self.putField('iname', iname)
#self.putField('wname', escapedExp)
self.putField('name', exp)
self.putField('exp', exp)
self.putItemCount(n)
self.putNoType()
for i in range(n):
self.handleWatch(exps[i], exps[i], '%s.%d' % (iname, i))
return
# Special array index: e.g a[1..199] or a[1.(3).199] for stride 3.
isRange, begin, step, end, template = self.parseRange(exp)
if isRange:
#self.warn('RANGE: %s %s %s in %s' % (begin, step, end, template))
r = range(begin, end, step)
n = len(r)
with TopLevelItem(self, iname):
self.putField('iname', iname)
#self.putField('wname', escapedExp)
self.putField('name', exp)
self.putField('exp', exp)
self.putItemCount(n)
self.putNoType()
with Children(self, n):
for i in r:
e = template % i
self.handleWatch(e, e, '%s.%s' % (iname, i))
return
# Fall back to less special syntax
#return self.handleWatch(origexp, exp, iname)
with TopLevelItem(self, iname):
self.putField('iname', iname)
self.putField('wname', escapedExp)
try:
value = self.parseAndEvaluate(exp)
self.putItem(value)
except Exception:
self.currentType.value = ' '
self.currentValue.value = '<no such value>'
self.currentChildNumChild = -1
self.currentNumChild = 0
self.putNumChild(0)
def registerDumper(self, funcname, function):
try:
if funcname.startswith('qdump__'):
typename = funcname[7:]
spec = inspect.getfullargspec(function)
if len(spec.args) == 2:
self.qqDumpers[typename] = function
elif len(spec.args) == 3 and len(spec.defaults) == 1:
self.qqDumpersEx[spec.defaults[0]] = function
self.qqFormats[typename] = self.qqFormats.get(typename, [])
elif funcname.startswith('qform__'):
typename = funcname[7:]
try:
self.qqFormats[typename] = function()
except:
self.qqFormats[typename] = []
elif funcname.startswith('qedit__'):
typename = funcname[7:]
try:
self.qqEditable[typename] = function
except:
pass
except:
pass
def setupDumpers(self, _={}):
self.resetCaches()
for mod in self.dumpermodules:
try:
m = __import__(mod)
dic = m.__dict__
for name in dic.keys():
item = dic[name]
self.registerDumper(name, item)
except Exception as e:
print('Failed to load dumper module: %s (%s)' % (mod, e))
msg = 'dumpers=['
for key, value in self.qqFormats.items():
editable = ',editable="true"' if key in self.qqEditable else ''
formats = (',formats=\"%s\"' % str(value)[1:-1]) if len(value) else ''
msg += '{type="%s"%s%s},' % (key, editable, formats)
msg += '],'
v = 10000 * sys.version_info[0] + 100 * sys.version_info[1] + sys.version_info[2]
msg += 'python="%d"' % v
return msg
def reloadDumpers(self, args):
for mod in self.dumpermodules:
m = sys.modules[mod]
import importlib
importlib.reload(m)
self.setupDumpers(args)
def loadDumpers(self, args):
msg = self.setupDumpers()
self.reportResult(msg, args)
def addDumperModule(self, args):
path = args['path']
(head, tail) = os.path.split(path)
sys.path.insert(1, head)
self.dumpermodules.append(os.path.splitext(tail)[0])
def extractQStringFromQDataStream(self, buf, offset):
""" Read a QString from the stream """
length = struct.unpack_from('!I', buf, offset)[0]
offset += 4
string = buf[offset:offset + length].decode('utf-16be')
return (string, offset + length)
def extractQByteArrayFromQDataStream(self, buf, offset):
""" Read a QByteArray from the stream """
length = struct.unpack_from('!I', buf, offset)[0]
offset += 4
string = buf[offset:offset + length].decode('latin1')
return (string, offset + length)
def extractIntFromQDataStream(self, buf, offset):
""" Read an int from the stream """
value = struct.unpack_from('!I', buf, offset)[0]
return (value, offset + 4)
def handleInterpreterMessage(self):
""" Return True if inferior stopped """
resdict = self.fetchInterpreterResult()
return resdict.get('event') == 'break'
def reportInterpreterResult(self, resdict, args):
print('interpreterresult=%s,token="%s"'
% (self.resultToMi(resdict), args.get('token', -1)))
def reportInterpreterAsync(self, resdict, asyncclass):
print('interpreterasync=%s,asyncclass="%s"'
% (self.resultToMi(resdict), asyncclass))
def removeInterpreterBreakpoint(self, args):
res = self.sendInterpreterRequest('removebreakpoint', {'id': args['id']})
return res
def insertInterpreterBreakpoint(self, args):
args['condition'] = self.hexdecode(args.get('condition', ''))
# Will fail if the service is not yet up and running.
response = self.sendInterpreterRequest('setbreakpoint', args)
resdict = args.copy()
bp = None if response is None else response.get('breakpoint', None)
if bp:
resdict['number'] = bp
resdict['pending'] = 0
else:
self.createResolvePendingBreakpointsHookBreakpoint(args)
resdict['number'] = -1
resdict['pending'] = 1
resdict['warning'] = 'Direct interpreter breakpoint insertion failed.'
self.reportInterpreterResult(resdict, args)
def resolvePendingInterpreterBreakpoint(self, args):
self.parseAndEvaluate('qt_qmlDebugEnableService("NativeQmlDebugger")')
response = self.sendInterpreterRequest('setbreakpoint', args)
bp = None if response is None else response.get('breakpoint', None)
resdict = args.copy()
if bp:
resdict['number'] = bp
resdict['pending'] = 0
else:
resdict['number'] = -1
resdict['pending'] = 0
resdict['error'] = 'Pending interpreter breakpoint insertion failed.'
self.reportInterpreterAsync(resdict, 'breakpointmodified')
def fetchInterpreterResult(self):
buf = self.parseAndEvaluate('qt_qmlDebugMessageBuffer')
size = self.parseAndEvaluate('qt_qmlDebugMessageLength')
msg = self.hexdecode(self.readMemory(buf, size))
# msg is a sequence of 'servicename<space>msglen<space>msg' items.
resdict = {} # Native payload.
while len(msg):
pos0 = msg.index(' ') # End of service name
pos1 = msg.index(' ', pos0 + 1) # End of message length
service = msg[0:pos0]
msglen = int(msg[pos0 + 1:pos1])
msgend = pos1 + 1 + msglen
payload = msg[pos1 + 1:msgend]
msg = msg[msgend:]
if service == 'NativeQmlDebugger':
try:
resdict = json.loads(payload)
continue
except:
self.warn('Cannot parse native payload: %s' % payload)
else:
print('interpreteralien=%s'
% {'service': service, 'payload': self.hexencode(payload)})
try:
expr = 'qt_qmlDebugClearBuffer()'
res = self.parseAndEvaluate(expr)
except RuntimeError as error:
self.warn('Cleaning buffer failed: %s: %s' % (expr, error))
return resdict
def sendInterpreterRequest(self, command, args={}):
encoded = json.dumps({'command': command, 'arguments': args})
hexdata = self.hexencode(encoded)
expr = 'qt_qmlDebugSendDataToService("NativeQmlDebugger","%s")' % hexdata
try:
res = self.parseAndEvaluate(expr)
except RuntimeError as error:
self.warn('Interpreter command failed: %s: %s' % (encoded, error))
return {}
except AttributeError as error:
# Happens with LLDB and 'None' current thread.
self.warn('Interpreter command failed: %s: %s' % (encoded, error))
return {}
if not res:
self.warn('Interpreter command failed: %s ' % encoded)
return {}
return self.fetchInterpreterResult()
def executeStep(self, args):
if self.nativeMixed:
response = self.sendInterpreterRequest('stepin', args)
self.doContinue()
def executeStepOut(self, args):
if self.nativeMixed:
response = self.sendInterpreterRequest('stepout', args)
self.doContinue()
def executeNext(self, args):
if self.nativeMixed:
response = self.sendInterpreterRequest('stepover', args)
self.doContinue()
def executeContinue(self, args):
if self.nativeMixed:
response = self.sendInterpreterRequest('continue', args)
self.doContinue()
def doInsertInterpreterBreakpoint(self, args, wasPending):
#self.warn('DO INSERT INTERPRETER BREAKPOINT, WAS PENDING: %s' % wasPending)
# Will fail if the service is not yet up and running.
response = self.sendInterpreterRequest('setbreakpoint', args)
bp = None if response is None else response.get('breakpoint', None)
if wasPending:
if not bp:
self.reportInterpreterResult({'bpnr': -1, 'pending': 1,
'error': 'Pending interpreter breakpoint insertion failed.'}, args)
return
else:
if not bp:
self.reportInterpreterResult({'bpnr': -1, 'pending': 1,
'warning': 'Direct interpreter breakpoint insertion failed.'}, args)
self.createResolvePendingBreakpointsHookBreakpoint(args)
return
self.reportInterpreterResult({'bpnr': bp, 'pending': 0}, args)
def isInternalInterpreterFrame(self, functionName):
if functionName is None:
return False
if functionName.startswith('qt_v4'):
return True
return functionName.startswith(self.qtNamespace() + 'QV4::')
# Hack to avoid QDate* dumper timeouts with GDB 7.4 on 32 bit
# due to misaligned %ebx in SSE calls (qstring.cpp:findChar)
def canCallLocale(self):
return True
def isReportableInterpreterFrame(self, functionName):
return functionName and functionName.find('QV4::Moth::VME::exec') >= 0
def extractInterpreterStack(self):
return self.sendInterpreterRequest('backtrace', {'limit': 10})
def putItems(self, count, generator, maxNumChild=10000):
self.putItemCount(count)
if self.isExpanded():
with Children(self, count, maxNumChild=maxNumChild):
for i, val in zip(self.childRange(), generator):
self.putSubItem(i, val)
def putItem(self, value):
#self.warn('PUT ITEM: %s' % value.stringify())
#self.dump_location()
#self.addToCache(typeobj) # Fill type cache
if not value.lIsInScope:
self.putSpecialValue('optimizedout')
self.putNumChild(0)
return
if not isinstance(value, self.Value):
raise RuntimeError('WRONG TYPE IN putItem: %s' % type(self.Value))
typeid = value.typeid
typecode = self.type_code(typeid)
typename = self.type_name(typeid)
# Try on possibly typedefed type first.
if self.tryPutPrettyItem(typename, value):
if typecode == TypeCode.Pointer:
self.putOriginalAddress(value.address())
else:
self.putAddress(value.address())
return
if typecode == TypeCode.Typedef:
#self.warn('TYPEDEF VALUE: %s' % value.stringify())
self.putItem(value.detypedef())
self.putBetterType(typename)
return
if typecode == TypeCode.Pointer:
self.putFormattedPointer(value)
if value.summary and self.useFancy:
self.putValue(self.hexencode(value.summary), 'utf8:1:0')
return
self.putAddress(value.address())
if typecode == TypeCode.Function:
#self.warn('FUNCTION VALUE: %s' % value)
self.putType(typeid)
self.putSymbolValue(self.value_as_address(value))
self.putNumChild(0)
return
if typecode == TypeCode.Enum:
#self.warn('ENUM VALUE: %s' % value.stringify())
self.putType(typename)
self.putValue(value.display())
self.putNumChild(0)
return
if typecode == TypeCode.Array:
#self.warn('ARRAY VALUE: %s' % value)
self.putCStyleArray(value)
return
if typecode == TypeCode.Bitfield:
#self.warn('BITFIELD VALUE: %s %d %s' % (value.name, value.lvalue, typename))
self.putNumChild(0)
#dd = typeobj.target().enumDisplay
#self.putValue(str(value.lvalue) if dd is None else dd(
# value.lvalue, value.laddress, '%d'))
self.putValue(self.value_as_integer(value))
self.putType(typename)
return
if typecode == TypeCode.Integral:
#self.warn('INTEGER: %s %s' % (value.name, value))
self.putNumChild(0)
self.putValue(self.value_as_integer(value))
self.putType(typename)
return
if typecode == TypeCode.Float:
#self.warn('FLOAT VALUE: %s' % value)
self.putValue(value.value())
self.putNumChild(0)
self.putType(typename)
return
if typecode in (TypeCode.Reference, TypeCode.RValueReference):
#self.warn('REFERENCE VALUE: %s' % value)
val = value.dereference()
if val.laddress != 0:
self.putItem(val)
else:
self.putSpecialValue('nullreference')
self.putBetterType(typename)
return
if typecode == TypeCode.Complex:
self.putType(typeid)
self.putValue(value.display())
self.putNumChild(0)
return
if typecode == TypeCode.FortranString:
self.putValue(self.hexencode(value.data()), 'latin1')
self.putNumChild(0)
self.putType(typeid)
if typename.endswith('[]'):
# D arrays, gdc compiled.
n = value['length']
base = value['ptr']
self.putType(typename)
self.putItemCount(n)
if self.isExpanded():
self.putArrayData(self.value_as_address(base), n, base.type.target())
return
#self.warn('SOME VALUE: %s' % value)
#self.warn('GENERIC STRUCT: %s' % typeid)
#self.warn('INAME: %s ' % self.currentIName)
#self.warn('INAMES: %s ' % self.expandedINames)
#self.warn('EXPANDED: %s ' % (self.currentIName in self.expandedINames))
self.putType(typename)
if value.summary is not None and self.useFancy:
self.putValue(self.hexencode(value.summary), 'utf8:1:0')
self.putNumChild(0)
return
self.putExpandable()
self.putEmptyValue()
#self.warn('STRUCT GUTS: %s ADDRESS: 0x%x ' % (value.name, value.address()))
if self.wantQObjectNames():
#with self.timer(self.currentIName):
self.putQObjectNameValue(value)
if self.isExpanded():
if not self.isCli:
self.putField('sortable', 1)
with Children(self, 1, childType=None):
self.putFields(value)
if self.wantQObjectNames():
self.tryPutQObjectGuts(value)
def symbolAddress(self, symbolName):
res = self.parseAndEvaluate('(void *)&' + symbolName)
return None if res is None else self.value_as_address(res)
def qtHookDataSymbolName(self):
return 'qtHookData'
def qtTypeInfoVersion(self):
addr = self.symbolAddress(self.qtHookDataSymbolName())
if addr:
# Only available with Qt 5.3+
(hookVersion, x, x, x, x, x, tiVersion) = self.split('ppppppp', addr)
#self.warn('HOOK: %s TI: %s' % (hookVersion, tiVersion))
if hookVersion >= 3:
self.qtTypeInfoVersion = lambda: tiVersion
return tiVersion
return None
def qtDeclarativeHookDataSymbolName(self):
return 'qtDeclarativeHookData'
def qtDeclarativeTypeInfoVersion(self):
addr = self.symbolAddress(self.qtDeclarativeHookDataSymbolName())
if addr:
# Only available with Qt 5.6+
(hookVersion, x, tiVersion) = self.split('ppp', addr)
if hookVersion >= 1:
self.qtTypeInfoVersion = lambda: tiVersion
return tiVersion
return None
def addToCache(self, typeobj):
typename = typeobj.name
if typename in self.typesReported:
return
self.typesReported[typename] = True
self.typesToReport[typename] = typeobj
class Value():
def __init__(self, dumper):
# This can be helpful to track down from where a Value was created
#self._stack = inspect.stack()
self.dumper = dumper
self.name = None
self.typeid = None
self.code = None
self.size = None
self.ldata = None # Target address in case of references and pointers.
self.laddress = None # Own address.
self.lvalue = None
self.lIsInScope = True
self.ldisplay = None
self.summary = None # Always hexencoded UTF-8.
self.isBaseClass = None
self.nativeValue = None
self.autoDerefCount = 0
def copy(self):
val = self.dumper.Value(self.dumper)
val.dumper = self.dumper
val.name = self.name
val.typeid = self.typeid
val.code = self.code = None
val.size = self.size
val.ldata = self.ldata
val.laddress = self.laddress
val.lvalue = self.lvalue
val.lIsInScope = self.lIsInScope
val.ldisplay = self.ldisplay
val.summary = self.summary
val.nativeValue = self.nativeValue
return val
@property
def type(self):
return self.dumper.Type(self.dumper, self.typeid)
def check(self):
#if self.typeid is not None and not isinstance(self.typeid, int):
# raise RuntimeError('INCONSISTENT TYPE: %s' % type(self.typeid))
#if self.laddress is not None and not isinstance(self.laddress, int):
# raise RuntimeError('INCONSISTENT ADDRESS: %s' % type(self.laddress))
pass
def __str__(self):
#raise RuntimeError('Not implemented')
return self.stringify()
def __int__(self):
return self.dumper.value_as_integer(self)
def stringify(self):
addr = 'None' if self.laddress is None else ('0x%x' % self.laddress)
if isinstance(self.ldata, int):
data = str(self.ldata)
else:
data = self.dumper.hexencode(self.ldata)
return "Value(name='%s',typeid=%s, type=%s,data=%s,address=%s)" \
% (self.name, self.typeid, self.type.name, data, addr)
def displayEnum(self, form='%d', bitsize=None):
return self.dumper.value_display_enum(self, form, bitsize)
def display(self):
if self.ldisplay is not None:
return self.ldisplay
simple = self.value()
if simple is not None:
return str(simple)
#if self.ldata is not None:
# return self.ldata.encode('hex')
if self.laddress is not None:
return 'value of type %s at address 0x%x' % (self.type.name, self.laddress)
return '<unknown data>'
def pointer(self):
return self.dumper.value_as_address(self)
def as_address(self):
return self.dumper.value_as_address(self)
def integer(self):
return self.dumper.value_as_integer(self)
def floatingPoint(self):
return self.dumper.value_as_floating_point(self)
def value(self):
return self.dumper.value_display(self)
def extractPointer(self):
return self.dumper.value_extract_something(self, self.dumper.ptrSize())
def hasMember(self, name):
return self.dumper.value_member_by_name(self, name) is not None
def __getitem__(self, indexish):
return self.dumper.value_member_by_indexish(self, indexish)
def members(self, include_bases):
return self.dumper.value_members(self, include_bases)
def __add__(self, other):
return self.dumper.value_plus_something(self, other)
def __sub__(self, other):
return self.dumper.value_minus_something(self, other)
def dereference(self):
return self.dumper.value_dereference(self)
def detypedef(self):
return self.dumper.value_detypedef(self)
def cast(self, typish):
return self.dumper.value_cast(self, typish)
def address(self):
self.check()
return self.laddress
def data(self):
return self.dumper.value_data(self, self.dumper.type_size(self.typeid))
def to(self, pattern):
return self.split(pattern)[0]
def split(self, pattern):
return self.dumper.value_split(self, pattern)
def checkPointer(self, p, align=1):
ptr = p if isinstance(p, int) else p.pointer()
self.readRawMemory(ptr, 1)
def splitArrayType(self, type_name):
# "foo[2][3][4]" -> ("foo", "[3][4]", 2)
pos1 = len(type_name)
# In case there are more dimensions we need the inner one.
while True:
pos1 = type_name.rfind('[', 0, pos1 - 1)
pos2 = type_name.find(']', pos1)
if type_name[pos1 - 1] != ']':
break
item_count = type_name[pos1 + 1:pos2]
return (type_name[0:pos1].strip(), type_name[pos2 + 1:].strip(), int(item_count))
def registerTypeAlias(self, existing_type_id, alias_id):
#self.warn('REGISTER ALIAS %s FOR %s' % (aliasId, existingTypeId))
self.type_alias[alias_id] = existing_type_id
def init_type_cache(self):
self.type_name_cache = {}
self.type_fields_cache = {}
self.type_alignment_cache = {}
self.type_bitsize_cache = {}
self.type_size_cache = {}
self.type_target_cache = {}
self.type_template_arguments_cache = {}
self.type_code_cache = {}
self.type_enum_display_cache = {}
self.type_module_name_cache = {}
self.type_nativetype_cache = {}
self.type_modulename_cache = {}
self.type_encoding_cache = {}
self.type_qobject_based_cache = {}
self.typeid_cache = {} # internal typename -> id
self.typeid_current = 100
self.typeid_from_typekey = {} # typename -> id
def dump_type_cache(self):
self.warn('NAME: %s' % self.type_name_cache)
self.warn('CODE: %s' % self.type_code_cache)
#self.warn('FIELDS: %s' % self.type_fields_cache)
self.warn('SIZE: %s' % self.type_size_cache)
self.warn('TARGS: %s' % self.type_template_arguments_cache)
self.warn('BITSIZE: %s' % self.type_bitsize_cache)
self.warn('TARGET: %s' % self.type_target_cache)
#self.warn('NATIVETYPE: %s' % self.type_nativetype_cache)
def dump_typeid(self, typeid):
self.warn(' NAME: %s' % self.type_name_cache.get(typeid, None))
self.warn(' CODE: %s' % self.type_code_cache.get(typeid, None))
#self.warn(' FIELDS: %s' % self.type_fields_cache.get(typeid, None))
self.warn(' SIZE: %s' % self.type_size_cache.get(typeid, None))
self.warn(' TARGS: %s' % self.type_template_arguments_cache.get(typeid, None))
self.warn(' BITSIZE: %s' % self.type_bitsize_cache.get(typeid, None))
self.warn(' TARGET: %s' % self.type_target_cache.get(typeid, None))
#self.warn(' NATIVETYPE: %s' % self.type_nativetype_cache.get(typeid, None))
def typeid_for_typish(self, typish):
if isinstance(typish, int):
return typish
if isinstance(typish, str):
return self.typeid_for_string(typish)
if isinstance(typish, self.Type):
return typish.typeid
self.warn('NO TYPE FOR TYPISH: %s' % str(typish))
return 0
def sanitize_type_name(self, typeid_str):
if not ' ' in typeid_str:
# FIXME: This uses self.qtNamespace() too early.
#typeid_arr.append(self.qtNamespace())
return typeid_str.replace('@', '')
typeid_arr = []
last_char_was_space = False
for c in typeid_str:
if c == '@' in typeid_str:
# FIXME: This uses self.qtNamespace() too early.
#typeid_arr.append(self.qtNamespace())
pass
elif c == ' ':
last_char_was_space = True
elif c in '&*<>,':
last_char_was_space = False
typeid_arr.append(c)
else:
if last_char_was_space:
typeid_arr.append(' ')
last_char_was_space = False
typeid_arr.append(c)
#self.warn("SANITIZE: '%s' TO '%s'" % (typeid_str, ''.join(typeid_arr)))
return ''.join(typeid_arr)
def typeid_for_string(self, typeid_str, type_name=None):
#typeid = self.typeid_cache.get(typeid_str, None)
#if typeid is not None:
# return typeid
sane_typeid_str = self.sanitize_type_name(typeid_str)
typeid = self.typeid_cache.get(sane_typeid_str, None)
if typeid is not None:
return typeid
self.typeid_current += 1
if type_name is None:
type_name = sane_typeid_str
typeid = self.typeid_current
self.typeid_cache[typeid_str] = typeid
self.typeid_cache[sane_typeid_str] = typeid
self.type_name_cache[typeid] = type_name
#if typeid == 103:
#self.warn("CREATED TYPE: %d %s" % (typeid, sane_typeid_str))
#if typeid == 135: self.dump_location()
return typeid
class Type():
__slots__ = ['dumper', 'typeid']
def __init__(self, dumper, typeid):
self.dumper = dumper
self.typeid = typeid
def __str__(self):
return self.dumper.type_stringify(self.typeid)
@property
def name(self):
return self.dumper.type_name(self.typeid)
@property
def code(self):
return self.dumper.type_code(self.typeid)
def bitsize(self):
return self.dumper.type_bitsize(self.typeid)
def size(self):
return self.dumper.type_size(self.typeid)
def target(self):
return self.dumper.Type(self.dumper, self.dumper.type_target(self.typeid))
@property
def moduleName(self):
return self.dumper.type_modulename_cache.get(self.typeid, None)
def __getitem__(self, index):
if isinstance(index, int):
return self.dumper.type_template_argument(self.typeid, index)
raise RuntimeError('CANNOT INDEX TYPE')
def check(self):
#if self.tdata.name is None:
# raise RuntimeError('TYPE WITHOUT NAME: %s' % self.typeid)
pass
def dereference(self):
return self.dumper.Type(self.dumper, self.dumper.type_dereference(self.typeid))
def templateArguments(self):
return self.dumper.type_template_arguments(self.typeid)
def templateArgument(self, index):
return self.dumper.type_template_argument(self.typeid, index)
def isSimpleType(self):
return self.code in (TypeCode.Integral, TypeCode.Float, TypeCode.Enum)
def alignment(self):
return self.dumper.type_alignment(self.typeid)
def pointer(self):
return self.dumper.Type(self.dumper, self.dumper.create_pointer_typeid(self.typeid))
def stripTypedefs(self):
return self.dumper.Type(self.dumper, self.dumper.type_target(self.typeid))
def isMovableType(self):
if self.code in (TypeCode.Pointer, TypeCode.Integral, TypeCode.Float):
return True
strippedName = self.dumper.stripNamespaceFromType(self.name)
if strippedName in (
'QBrush', 'QBitArray', 'QByteArray', 'QCustomTypeInfo',
'QChar', 'QDate', 'QDateTime', 'QFileInfo', 'QFixed',
'QFixedPoint', 'QFixedSize', 'QHashDummyValue', 'QIcon',
'QImage', 'QLine', 'QLineF', 'QLatin1Char', 'QLocale',
'QMatrix', 'QModelIndex', 'QPoint', 'QPointF', 'QPen',
'QPersistentModelIndex', 'QResourceRoot', 'QRect', 'QRectF',
'QRegExp', 'QSize', 'QSizeF', 'QString', 'QTime', 'QTextBlock',
'QUrl', 'QVariant',
'QXmlStreamAttribute', 'QXmlStreamNamespaceDeclaration',
'QXmlStreamNotationDeclaration', 'QXmlStreamEntityDeclaration'
):
return True
if strippedName == 'QStringList':
return self.dumper.qtVersionAtLeast(0x050000)
if strippedName == 'QList':
return self.dumper.qtVersionAtLeast(0x050600)
return False
class Field:
__slots__ = ['name', 'typeid', 'bitsize', 'bitpos', 'is_struct', 'is_artificial', 'is_base_class']
def __init__(self, name=None, typeid=None, bitsize=None, bitpos=None,
extractor=None, is_struct=False, is_artificial=False, is_base_class=False):
self.name = name
self.typeid = typeid
self.bitsize = bitsize
self.bitpos = bitpos
self.is_struct = is_struct
self.is_base_class = is_base_class
def ptrCode(self):
return 'I' if self.ptrSize() == 4 else 'Q'
def fromPointerData(self, bytes_value):
return struct.unpack(self.packCode + self.ptrCode(), bytes_value)
def createPointerValue(self, target_address, target_typish):
if not isinstance(target_address, int):
raise RuntimeError('Expected integral address value in createPointerValue(), got %s'
% type(target_typish))
val = self.Value(self)
val.ldata = target_address
val.typeid = self.create_pointer_typeid(self.create_typeid(target_typish))
return val
#target_typeid = self.create_typeid(target_typish)
#if self.useDynamicType:
# target_typeid = self.dynamic_typeid_at_address(target_typeid, target_address)
#val.typeid = self.create_pointer_typeid(target_typeid)
#return val
def createPointerType(self, target_typish):
typeid = self.create_pointer_typeid(self.typeid_for_typish(target_typish))
return self.Type(self, typeid)
def create_pointer_typeid(self, target_typeid):
name = self.type_name(target_typeid) + ' *'
typeid = self.typeid_for_string(name)
self.type_size_cache[typeid] = self.ptrSize()
self.type_alignment_cache[typeid] = self.ptrSize()
self.type_code_cache[typeid] = TypeCode.Pointer
self.type_target_cache[typeid] = target_typeid
return typeid
def create_reference_typeid(self, target_typeid):
type_name = self.type_name_cache[target_typeid] + ' &'
typeid = self.typeid_for_string(type_name)
self.type_code_cache[typeid] = TypeCode.Reference
self.type_target_cache[typeid] = target_typeid
#self.type_size_cache[typeid] = self.ptrSize() # Needed for Gdb13393 test.
return typeid
def create_rvalue_reference_typeid(self, target_typeid):
type_name = self.type_name_cache[target_typeid] + ' &&'
typeid = self.typeid_for_string(type_name)
self.type_code_cache[typeid] = TypeCode.RValueReference
self.type_target_cache[typeid] = target_typeid
return typeid
def create_array_typeid(self, target_typeid, count):
target_type_name = self.type_name(target_typeid)
if target_type_name.endswith(']'):
(prefix, suffix, inner_count) = self.splitArrayType(target_type_name)
type_name = '%s[%d][%d]%s' % (prefix, count, inner_count, suffix)
else:
type_name = '%s[%d]' % (target_type_name, count)
typeid = self.typeid_for_string(type_name)
self.type_code_cache[typeid] = TypeCode.Array
self.type_target_cache[typeid] = target_typeid
self.type_size_cache[typeid] = self.type_size(target_typeid) * count
self.type_alignment_cache[typeid] = self.type_alignment_cache.get(target_typeid, None)
return typeid
def create_bitfield_typeid(self, target_typeid, bitsize):
target_typename = self.type_name(target_typeid)
typeid = self.typeid_for_string('%s:%d' % (target_typename, bitsize))
self.type_name_cache[typeid] = '%s : %d' % (target_typename, bitsize)
self.type_code_cache[typeid] = TypeCode.Bitfield
self.type_target_cache[typeid] = target_typeid
self.type_bitsize_cache[typeid] = bitsize
return typeid
def create_typedefed_typeid(self, target_typeid, type_name, type_key):
typeid = self.typeid_for_string(type_key, type_name)
# Happens for C-style struct in GDB: typedef { int x; } struct S1;
if target_typeid == typeid:
return target_typeid
self.type_code_cache[typeid] = TypeCode.Typedef
self.type_target_cache[typeid] = target_typeid
size = self.type_size_cache.get(target_typeid, None)
if size is not None:
self.type_size_cache[typeid] = size
return typeid
def createType(self, typish, size=None):
return self.Type(self, self.create_typeid(typish, size))
def create_typeid(self, typish, size=None):
if isinstance(typish, int):
return typish
if isinstance(typish, self.Type):
return typish.typeid
if isinstance(typish, str):
return self.create_typeid_from_name(typish)
raise RuntimeError('NEED TYPE, NOT %s' % type(typish))
def cheap_typeid_from_name(self, typename_):
ns = self.qtNamespace()
typename = typename_.replace('@', ns)
return self.cheap_typeid_from_name_nons(typename)
def cheap_typeid_from_name_nons(self, typename):
if typename in self.typeid_cache:
return self.typeid_for_string(typename)
if typename.startswith('QList<') or typename.startswith('QVector<'):
typeid = self.typeid_for_string(typename)
if typeid:
size = 3 * self.ptrSize() if self.qtVersionAtLeast(0x060000) else self.ptrSize()
self.type_code_cache[typeid] = TypeCode.Struct
self.type_size_cache[typeid] = size
return typeid
if typename.endswith('*'):
inner_typeid = self.cheap_typeid_from_name_nons(typename[0:-1])
if inner_typeid != 0:
return self.create_pointer_typeid(inner_typeid)
return 0
def create_typeid_from_name(self, typename_, size=None):
ns = self.qtNamespace()
typename = typename_.replace('@', ns)
if typename in self.typeid_cache:
return self.typeid_for_string(typename)
# This triggers for boost::variant<int, std::string> due to the mis-encoding
# of the second template parameter. [MARK_A]
knownType = self.lookupType(typename)
#self.warn('KNOWN: %s FOR %s' % (knownType, typename))
if knownType is not None:
#self.warn('USE FROM NATIVE')
#self.dump_location()
return knownType.typeid
#self.warn('FAKING: %s SIZE: %s' % (typename, size))
typeid = self.typeid_for_string(typename)
if size is not None:
self.type_size_cache[typeid] = size
self.type_code_cache[typeid] = TypeCode.Struct
if typename.endswith('*'):
self.type_code_cache[typeid] = TypeCode.Pointer
self.type_size_cache[typeid] = self.ptrSize()
self.type_target_cache[typeid] = self.typeid_for_string(typename[:-1].strip())
#self.dump_location()
#self.warn('CREATED TYPE: %s' % typeid)
return typeid
def createValueFromAddress(self, address, typish):
val = self.Value(self)
val.typeid = self.create_typeid(typish)
#self.warn('CREATING %s AT 0x%x' % (val.type.name, address))
val.laddress = address
if self.useDynamicType:
val.typeid = self.dynamic_typeid_at_address(val.typeid, address)
return val
def createValueFromData(self, data, typish):
val = self.Value(self)
val.typeid = self.create_typeid(typish)
#self.warn('CREATING %s WITH DATA %s' % (val.type.name, self.hexencode(data)))
val.ldata = data
val.check()
return val
def createValue(self, datish, typish):
if isinstance(datish, int): # Used as address.
return self.createValueFromAddress(datish, typish)
if isinstance(datish, bytes):
return self.createValueFromData(datish, typish)
raise RuntimeError('EXPECTING ADDRESS OR BYTES, GOT %s' % type(datish))
def createProxyValue(self, proxy_data, type_name):
typeid = self.typeid_for_string(type_name)
self.type_code_cache[typeid] = TypeCode.Struct
val = self.Value(self)
val.typeid = typeid
val.ldata = proxy_data
return val
class StructBuilder():
def __init__(self, dumper):
self.dumper = dumper
self.pattern = ''
self.current_size = 0
self.fields = []
self.autoPadNext = False
self.maxAlign = 1
def add_field(self, field_size, field_code=None, field_is_struct=False,
field_name=None, field_typeid=0, field_align=1):
if field_code is None:
field_code = '%ss' % field_size
#self.dumper.warn("FIELD SIZE: %s %s %s " % (field_name, field_size, str(field_align)))
if self.autoPadNext:
padding = (field_align - self.current_size) % field_align
#self.warn('AUTO PADDING AT %s BITS BY %s BYTES' % (self.current_size, padding))
field = self.dumper.Field(self.dumper, bitpos=self.current_size * 8,
bitsize=padding * 8)
self.pattern += '%ds' % padding
self.current_size += padding
self.fields.append(field)
self.autoPadNext = False
if field_align > self.maxAlign:
self.maxAlign = field_align
#self.warn("MAX ALIGN: %s" % self.maxAlign)
field = self.dumper.Field(name=field_name, typeid=field_typeid,
is_struct=field_is_struct, bitpos=self.current_size *8,
bitsize=field_size * 8)
self.pattern += field_code
self.current_size += field_size
self.fields.append(field)
def describe_struct_member(self, typename):
typename = typename.replace('@', self.qtNamespace())
typeid = self.cheap_typeid_from_name_nons(typename)
if typeid:
size = self.type_size(typeid)
if size is not None:
return size, typeid
typeobj = self.lookupType(typename)
self.warn("LOOKUP FIELD TYPE: %s TYPEOBJ: %s" % (typename, typeobj))
if typeobj is not None:
typeid = typeobj.typeid
size = self.type_size(typeid)
if size is not None:
return size, typeid
self.warn("UNKNOWN EMBEDDED TYPE: %s" % typename)
return 0, 0
@functools.lru_cache(maxsize = None)
def describeStruct(self, pattern):
ptrSize = self.ptrSize()
builder = self.StructBuilder(self)
n = None
typename = ''
readingTypeName = False
#self.warn("PATTERN: %s" % pattern)
for c in pattern:
#self.warn("PAT CODE: %s %s" % (c, str(n)))
if readingTypeName:
if c == '}':
readingTypeName = False
n, field_typeid = self.describe_struct_member(typename)
field_align = self.type_alignment(field_typeid)
builder.add_field(n,
field_is_struct=True,
field_typeid=field_typeid,
field_align=field_align)
typename = None
n = None
else:
typename += c
elif c == 't': # size_t
builder.add_field(ptrSize, self.ptrCode(), field_align=ptrSize)
elif c == 'p': # Pointer as int
builder.add_field(ptrSize, self.ptrCode(), field_align=ptrSize)
elif c == 'P': # Pointer as Value
builder.add_field(ptrSize, '%ss' % ptrSize, field_align=ptrSize)
elif c in ('d'):
builder.add_field(8, c, field_align=ptrSize) # field_type = 'double' ?
elif c in ('q', 'Q'):
builder.add_field(8, c, field_align=ptrSize)
elif c in ('i', 'I', 'f'):
builder.add_field(4, c, field_align=4)
elif c in ('h', 'H'):
builder.add_field(2, c, field_align=2)
elif c in ('b', 'B', 'c'):
builder.add_field(1, c, field_align=1)
elif c >= '0' and c <= '9':
if n is None:
n = ''
n += c
elif c == 's':
builder.add_field(int(n), field_align=1)
n = None
elif c == '{':
readingTypeName = True
typename = ''
elif c == '@':
if n is None:
# Automatic padding depending on next item
builder.autoPadNext = True
else:
# Explicit padding.
padding = (int(n) - builder.current_size) % int(n)
field = self.Field(self)
builder.pattern += '%ds' % padding
builder.current_size += padding
builder.fields.append(field)
n = None
else:
raise RuntimeError('UNKNOWN STRUCT CODE: %s' % c)
pp = builder.pattern
size = builder.current_size
fields = builder.fields
tailPad = (builder.maxAlign - size) % builder.maxAlign
size += tailPad
#self.warn("FIELDS: %s" % ((pp, size, fields),))
return (pp, size, fields)
def type_stringify(self, typeid):
return 'Type(id="%s",name="%s",bsize=%s,code=%s)'% (
str(typeid),
self.type_name_cache.get(typeid, '?'),
self.type_bitsize_cache.get(typeid, '?'),
self.type_code_cache.get(typeid, '?'))
def type_name(self, typeid):
name = self.type_name_cache.get(typeid, None)
if name is None:
self.dump_type_cache()
self.check_typeid(typeid)
raise RuntimeError('UNNAMED TYPE: %d' % typeid)
return name
def type_code(self, typeid):
# This does not seem to be needed for GDB and LLDB
if not typeid in self.type_code_cache:
typename = self.type_name_cache.get(typeid, None)
if typename is None:
raise RuntimeError('NAME/ID ERROR FOR %s' % typeid)
#self.warn("EMERGENCY LOOKUP: %s " % typename)
typeobj = self.lookupType(typename)
if typeobj is None:
#self.warn("EMERGENCY LOOKUP FAILED: %s " % typeid)
#self.dump_type_cache()
return TypeCode.Struct
#self.warn("EMERGENCY LOOKUP SUCCEEDED: %s " % typeid)
typeid = typeobj.typeid
return self.type_code_cache[typeid]
def type_bitpos(self, typeid):
return self.type_bitpos_cache[typeid]
def type_target(self, typeid):
return self.type_target_cache.get(typeid, None)
targetid = self.type_target_cache.get(typeid, None)
if not targetid in self.type_code_cache:
typename = self.type_name_cache.get(targetid, None)
if typename is None:
raise RuntimeError('NAME/ID ERROR FOR TARGET %s' % targetid)
typeobj = self.lookupType(typename)
if typeobj is None:
#self.warn("EMERGENCY LOOKUP FAILED FOR %s %s " % (typename, typeid))
#self.dump_type_cache()
return 0 # Void type id
return targetid
def type_template_arguments(self, typeid):
targs = []
#self.dump_type_cache()
#self.warn('TRY TEMPLATE ARGS FOR %s' % typeid)
for index in range(0, 100):
targ = self.type_template_argument(typeid, index)
#self.warn('INDEX %s %s' % (index, targ))
if targ is None:
break
targs.append(targ)
#self.warn('TARGS %s' % targs)
return targs
def nativeTemplateParameter(self, typeid, index, nativeType):
return None
def type_template_argument(self, typeid, index):
targ = self.type_template_arguments_cache.get((typeid, index), None)
if targ is not None:
return targ
native_type = self.type_nativetype_cache.get(typeid, None)
if native_type is not None:
targ = self.nativeTemplateParameter(typeid, index, native_type)
if targ is not None:
self.type_template_arguments_cache[(typeid, index)] = targ
return targ
# FIXME: The block below is apparently not needed anymore in the GDB
# and LLDB cases, so removing also doesn't bring performance. But it
# is at least potentially one source of type lookups.
#typename = self.type_name(typeid)
#self.dump_type_cache()
#self.warn('TEMPLATE ARGS FOR %s %s' % (typeid, typename))
#typeobj = self.lookupType(typename)
#if typeobj is not None:
# #self.warn(' FOUNT NATIVE %s %s, %s' % (typeid, typeobj, native_type))
# native_type = self.type_nativetype_cache.get(typeobj.typeid, None)
# #targ = self.type_template_argument(typeobj.typeid, index)
# targ = self.nativeTemplateParameter(typeobj.typeid, index, native_type)
# if targ is not None:
# self.type_template_arguments_cache[(typeid, index)] = targ
# return targ
# Native lookups didn't help. Happens for 'wrong' placement of 'const'
# etc. with LLDB or template parameter packs with gcc in boost::variant
# 13.2.0. But not all is lost:
self.fill_template_parameters_manually(typeid)
targ = self.type_template_arguments_cache.get((typeid, index), None)
return targ
def type_alignment(self, typeid):
alignment = self.type_alignment_cache.get(typeid, None)
if alignment is not None:
return alignment
code = self.type_code_cache.get(typeid, None)
if code in (TypeCode.Typedef, TypeCode.Array):
alignment = self.type_alignment(self.type_target_cache[typeid])
elif code in (TypeCode.Integral, TypeCode.Float, TypeCode.Enum):
name = self.type_name(typeid)
if name in ('double', 'long long', 'unsigned long long'):
# Crude approximation.
alignment = 8 if self.isWindowsTarget() else self.ptrSize()
else:
alignment = self.type_size(typeid)
elif code in (TypeCode.Pointer, TypeCode.Reference, TypeCode.RValueReference):
alignment = self.ptrSize()
elif self.isCdb:
alignment = self.nativeStructAlignment(self.type_nativetype(typeid))
else:
size = self.type_size(typeid)
if size is None:
self.dump_type_cache()
self.warn("NO ALIGNMENT FOUND FOR SIZE OF TYPE %s" % str(typeid))
return 1
if size >= self.ptrSize():
alignment = self.ptrSize()
else:
alignment = size
#self.warn("GUESSING ALIGNMENT %s FOR TYPEID %s" % (alignment, typeid))
self.type_alignment_cache[typeid] = alignment
return alignment
def type_nativetype(self, typeid):
native_type = self.type_nativetype_cache.get(typeid, None)
if native_type is not None:
return native_type
typename = self.type_name(typeid)
native_type = self.lookupNativeType(typename)
# Also cache unsuccessful attempts
self.type_nativetype_cache[typeid] = native_type
return native_type
def type_size(self, typeid):
self.check_typeid(typeid)
size = self.type_size_cache.get(typeid, None)
if size is not None:
return size
nativeType = self.type_nativetype(typeid)
if self.isCdb:
size = nativeType.bitsize() // 8
else:
if not self.type_size_cache.get(typeid):
self.from_native_type(nativeType)
size = self.type_size_cache.get(typeid, None)
if size is not None:
self.type_size_cache[typeid] = size
else:
self.dump_type_cache()
self.warn("CANNOT DETERMINE SIZE FOR TYPE %s" % str(typeid))
return size
def type_bitsize(self, typeid):
bitsize = self.type_bitsize_cache.get(typeid, None)
if bitsize is None:
bitsize = 8 * self.type_size(typeid)
self.type_bitsize_cache[typeid] = bitsize
return bitsize
def dynamic_typeid_at_address(self, base_typeid, address):
#with self.dumper.timer('dynamic_typeid_at_address %s 0x%s' % (self.name, address)):
type_code = self.type_code_cache.get(base_typeid, None)
if type_code != TypeCode.Struct:
#self.dump_type_cache()
#self.warn('SHORT CUT FOR BASE ID: %d TC: %s' % (base_typeid, type_code))
return base_typeid
# This turned out to be expensive.
#try:
# vtbl = self.extract_pointer_at_address(address)
#except:
# return base_typeid
##self.warn('VTBL: 0x%x' % vtbl)
#if not self.couldBePointer(vtbl):
# return base_typeid
#self.warn("DYN TYPE FOR %s %s" % (base_typeid, self.type_name(base_typeid)))
return self.nativeDynamicType(address, base_typeid)
# This is the generic version for synthetic values.
# The native backends replace it in their fromNativeValue()
# implementations.
def value_members(self, value, include_bases):
#self.warn("LISTING MEMBERS OF %s" % value)
#self.warn("LISTING MEMBERS OF TYPE %s %s" % (value.typeid, self.type_name(value.typeid)))
typeid = value.typeid
members = self.type_fields_cache.get(typeid, None)
if members is not None:
return members
members = []
native_type = self.type_nativetype_cache.get(typeid, None)
if native_type is None:
native_type = self.lookupNativeType(self.type_name(typeid))
if not native_type is None:
members = self.nativeListMembers(value, native_type, include_bases)
#self.warn("FIELDS 2: %s" % ', '.join(str(f) for f in members))
else:
self.warn("NO NATIVE TYPE FIELDS FOR: %s" % typeid)
#self.warn("GOT MEMBERS: %s" % ', '.join(str(f.name) for f in members))
return members
def value_member_by_field(self, value, field):
#self.warn("EXTRACTING MEMBER '%s' OF %s AT OFFSET %s" % (field.name, field.typeid, field.bitpos))
val = self.Value(self)
val.typeid = field.typeid
val.name = field.name
val.isBaseClass = field.is_base_class
#self.warn('CREATING %s WITH DATA %s' % (val.type.name, self.hexencode(data)))
field_offset = field.bitpos // 8
if value.laddress is not None:
val.laddress = value.laddress + field_offset
field_size = (field.bitsize + 7) // 8
blob = self.value_data(value, field_offset + field_size)
val.ldata = blob[field_offset:field_offset + field_size]
#self.dump_location()
return val
def value_member_by_name(self, value, name):
#field = self.type_fields_cache.get((value.typeid, name), None)
#if field is not None:
# return self.value_member_by_field(value, field)
#self.dump_location()
#self.warn("WANT MEMBER '%s' OF '%s'" % (name, value))
#value.check()
value_typecode = self.type_code(value.typeid)
if value_typecode == TypeCode.Typedef:
return self.value_member_by_name(self.value_detypedef(value), name)
if value_typecode in (TypeCode.Pointer, TypeCode.Reference, TypeCode.RValueReference):
res = self.value_member_by_name(self.value_dereference(value), name)
if res is not None:
return res
if value_typecode == TypeCode.Struct:
#self.warn('SEARCHING FOR MEMBER: %s IN %s' % (name, value.type.name))
members = self.value_members(value, True)
#self.warn('MEMBERS: %s' % ', '.join(str(m.name) for m in members))
base = None
for member in members:
#self.warn('CHECKING FIELD %s' % member.name)
if member.type.code == TypeCode.Typedef:
member = member.detypedef()
if member.name == name:
#self.warn('FOUND MEMBER 1: %s IN %s' % (name, value.type.name))
return member
if member.isBaseClass:
base = member
if self.isCdb:
if base is not None:
# self.warn("CHECKING BASE CLASS '%s' for '%s'" % (base.type.name, name))
res = self.value_member_by_name(base, name)
if res is not None:
# self.warn('FOUND MEMBER 2: %s IN %s' % (name, value.type.name))
return res
else:
for member in members:
if member.type.code == TypeCode.Typedef:
member = member.detypedef()
if member.name == name: # Could be base class.
return member
if member.type.code == TypeCode.Struct:
res = self.value_member_by_name(member, name)
if res is not None:
#self.warn('FOUND MEMBER 2: %s IN %s' % (name, value.type.name))
return res
#self.warn('DID NOT FIND MEMBER: %s IN %s' % (name, value.type.name))
#self.dump_location()
return None
def value_member_by_indexish(self, value, indexish):
#self.warn('GET ITEM %s %s' % (self, indexish))
#value.check()
value_typecode = self.type_code(value.typeid)
if isinstance(indexish, str):
if value_typecode == TypeCode.Pointer:
#self.warn('GET ITEM %s DEREFERENCE TO %s' % (value, value.dereference()))
return value.dereference().__getitem__(indexish)
res = self.value_member_by_name(value, indexish)
if res is None:
raise RuntimeError('No member named %s in type %s'
% (indexish, value.type.name))
return res
if isinstance(indexish, int):
if value_typecode == TypeCode.Array:
addr = value.laddress + int(indexish) * value.type.target().size()
return self.createValueFromAddress(addr, value.type.target())
if value_typecode == TypeCode.Pointer:
addr = value.pointer() + int(indexish) * value.type.target().size()
return self.createValueFromAddress(addr, value.type.target())
return self.value_members(value, False)[indexish]
raise RuntimeError('BAD INDEX TYPE %s' % type(indexish))
def value_extract_bits(self, value, bitpos, bitsize):
value_size = self.type_size(value.typeid)
ldata = bytes(self.value_data(value, value_size))
bdata = ''.join([format(x, '0>8b')[::-1] for x in ldata])
fdata = bdata[bitpos : bitpos + bitsize]
fdata = fdata[::-1]
return int(fdata, 2)
def value_display_enum(self, value, form='%d', bitsize=None):
size = value.type.size()
intval = self.value_extract_integer(value, size, False)
dd = self.type_enum_display_cache.get(value.typeid, None)
if dd is None:
return str(intval)
return dd(intval, value.laddress, form)
def value_as_address(self, value):
return self.value_extract_integer(value, self.ptrSize(), False)
def value_as_integer(self, value):
if isinstance(value.ldata, int):
return value.ldata
type_name = self.type_name(value.typeid)
signed = type_name != 'unsigned' \
and not type_name.startswith('unsigned ') \
and type_name.find(' unsigned ') == -1
size = value.type.size()
return self.value_extract_integer(value, size, signed)
def value_as_floating_point(self, value):
if value.nativeValue is not None and not self.isCdb:
return str(value.nativeValue)
if self.type_code(value.typeid) == TypeCode.Typedef:
return self.value_as_floating_point(self.value_detypedef(value))
if value.type.size() == 8:
blob = self.value_data(value, 8)
return struct.unpack_from(self.packCode + 'd', blob, 0)[0]
if value.type.size() == 4:
blob = self.value_data(value, 4)
return struct.unpack_from(self.packCode + 'f', blob, 0)[0]
# Fall back in case we don't have a nativeValue at hand.
# FIXME: This assumes Intel's 80bit extended floats. Which might
# be wrong.
l, h = value.split('QQ')
if True: # 80 bit floats
sign = (h >> 15) & 1
exp = (h & 0x7fff)
fraction = l
bit63 = (l >> 63) & 1
#self.warn("SIGN: %s EXP: %s H: 0x%x L: 0x%x" % (sign, exp, h, l))
if exp == 0:
if bit63 == 0:
if l == 0:
res = '-0' if sign else '0'
else:
res = (-1)**sign * l * 2**(-16382) # subnormal
else:
res = 'pseudodenormal'
elif exp == 0x7fff:
res = 'special'
else:
res = (-1)**sign * l * 2**(exp - 16383 - 63)
else: # 128 bits
sign = h >> 63
exp = (h >> 48) & 0x7fff
fraction = h & (2**48 - 1)
#self.warn("SIGN: %s EXP: %s FRAC: %s H: 0x%x L: 0x%x" % (sign, exp, fraction, h, l))
if exp == 0:
if fraction == 0:
res = -0.0 if sign else 0.0
else:
res = (-1)**sign * fraction / 2**48 * 2**(-62) # subnormal
elif exp == 0x7fff:
res = ('-inf' if sign else 'inf') if fraction == 0 else 'nan'
else:
res = (-1)**sign * (1 + fraction / 2**48) * 2**(exp - 63)
return res
def value_data(self, value, size):
if value.ldata is not None:
return value.ldata[:size]
if value.laddress is not None:
return self.value_data_from_address(value.laddress, size)
raise RuntimeError('CANNOT CONVERT TO BYTES: %s' % value)
def value_data_from_address(self, address, size):
if not isinstance(address, int):
raise RuntimeError('ADDRESS WRONG TYPE: %s' % type(address))
if not isinstance(size, int):
raise RuntimeError('SIZE WRONG TYPE: %s' % type(size))
if size <= 0:
raise RuntimeError('SIZE WRONG VALUE: %s' % size)
res = self.readRawMemory(address, size)
if len(res) > 0:
return res
raise RuntimeError('CANNOT READ %d BYTES FROM ADDRESS: %s' % (size, address))
def value_display(self, value):
type_code = self.type_code(value.typeid)
if type_code == TypeCode.Enum:
return self.value_display_enum(value)
if type_code == TypeCode.Typedef:
return self.value_display(self.value_detypedef(value))
if type_code == TypeCode.Integral:
return self.value_as_integer(value)
if type_code == TypeCode.Bitfield:
return self.value_as_integer(value)
if type_code == TypeCode.Float:
return self.value_as_floating_point(value)
if type_code == TypeCode.Pointer:
return self.value_as_address(value)
return None
def value_detypedef(self, value):
#value.check()
#if value.type.code != TypeCode.Typedef:
# raise RuntimeError("WRONG")
val = value.copy()
val.typeid = self.type_target(value.typeid)
#self.warn("DETYPEDEF FROM: %s" % self)
#self.warn("DETYPEDEF TO: %s" % val)
return val
def split(self, pattern, value_or_address):
if isinstance(value_or_address, self.Value):
return self.value_split(value_or_address, pattern)
if isinstance(value_or_address, int):
val = self.Value(self)
val.laddress = value_or_address
return self.value_split(val, pattern)
raise RuntimeError('CANNOT EXTRACT STRUCT FROM %s' % type(value_or_address))
def value_split(self, value, pattern):
#self.warn('EXTRACT STRUCT FROM: %s' % self.type)
(pp, size, fields) = self.describeStruct(pattern)
#self.warn('SIZE: %s ' % size)
blob = self.value_data(value, size)
address = value.laddress
parts = struct.unpack_from(self.packCode + pp, blob)
def fix_struct(field, part):
#self.warn('STRUCT MEMBER: %s' % type(part))
if field.is_struct:
res = self.Value(self)
res.typeid = field.typeid
res.ldata = part
if address is not None:
res.laddress = address + field.bitpos // 8
return res
return part
if len(fields) != len(parts):
raise RuntimeError('STRUCT ERROR: %s %s' % (fields, parts))
return tuple(map(fix_struct, fields, parts))
def type_dereference(self, typeid):
if self.type_code(typeid) == TypeCode.Typedef:
return self.type_dereference(self.type_target(typeid))
return self.type_target(typeid)
def type_strip_typedefs(self, typeid):
if self.type_code(typeid) == TypeCode.Typedef:
return self.type_strip_typedefs(self.type_target(typeid))
return typeid
def value_dereference(self, value):
value.check()
#if value.type.code == TypeCode.Typedef:
# return self.value_dereference(self.value_detypedef(value))
val = self.Value(self)
if value.type.code in (TypeCode.Reference, TypeCode.RValueReference):
val.summary = value.summary
if value.nativeValue is None:
val.laddress = value.pointer()
if val.laddress is None and value.laddress is not None:
val.laddress = value.laddress
val.typeid = self.type_dereference(value.typeid)
if self.useDynamicType:
val.typeid = self.nativeDynamicType(val.laddress, val.typeid)
else:
val = self.nativeValueDereferenceReference(value)
elif value.type.code == TypeCode.Pointer:
try:
val = self.nativeValueDereferencePointer(value)
except:
val.laddress = value.pointer()
val.typeid = self.type_dereference(value.typeid)
if self.useDynamicType:
val.typeid = self.nativeDynamicType(val.laddress, val.typeid)
else:
raise RuntimeError("WRONG: %s" % value.type.code)
return val
def value_cast(self, value, typish):
value.check()
val = self.Value(self)
val.laddress = value.laddress
val.ldata = value.ldata
val.typeid = self.create_typeid(typish)
return val
def value_plus_something(self, value, other):
value.check()
if isinstance(other, int):
stripped = self.type_strip_typedefs(value.typeid)
if self.type_code(stripped) == TypeCode.Pointer:
item_size = self.type_size(self.type_dereference(stripped))
address = self.value_as_address(value) + item_size * other
val = self.Value(self)
val.laddress = None
val.ldata = address
val.typeid = value.typeid
return val
raise RuntimeError('BAD DATA TO ADD TO: %s %s' % (value.type, other))
def value_minus_something(self, value, other):
value.check()
if other.type.name == value.type.name:
stripped = self.type_strip_typedefs(value.typeid)
if self.type_code(stripped.code) == TypeCode.Pointer:
item_size = self.type_size(self.type_dereference(stripped))
return (value.pointer() - other.pointer()) // item_size
raise RuntimeError('BAD DATA TO SUB TO: %s %s' % (value.type, other))
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