forked from qt-creator/qt-creator
4794cbf030
It is nicer in the presence of namespaces as '::' will be replaced by '__' to create the dumper function names.
806 lines
26 KiB
Python
806 lines
26 KiB
Python
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#Note: Keep name-type-value-numchild-extra order
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#return
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import sys
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import traceback
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import gdb
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import base64
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import curses.ascii
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verbosity = 0
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verbosity = 1
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def select(condition, if_expr, else_expr):
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if condition:
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return if_expr
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return else_expr
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def qmin(n, m):
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if n < m:
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return n
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return m
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def value(expr):
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value = gdb.parse_and_eval(expr)
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try:
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return int(value)
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except:
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return str(value)
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def isSimpleType(typeobj):
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type = str(typeobj)
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return type == "bool" \
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or type == "char" \
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or type == "double" \
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or type == "float" \
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or type == "int" \
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or type == "long" or type.startswith("long ") \
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or type == "short" or type.startswith("short ") \
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or type == "signed" or type.startswith("signed ") \
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or type == "unsigned" or type.startswith("unsigned ")
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def isStringType(d, typeobj):
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type = str(typeobj)
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return type == d.ns + "QString" \
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or type == d.ns + "QByteArray" \
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or type == "std::string" \
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or type == "std::wstring" \
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or type == "wstring"
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def warn(message):
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if verbosity > 0:
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print "XXX: %s " % message.encode("latin1")
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pass
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def check(exp):
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if not exp:
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raise RuntimeError("Check failed")
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#def couldBePointer(p, align):
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# type = gdb.lookup_type("unsigned int")
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# ptr = gdb.Value(p).cast(type)
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# d = int(str(ptr))
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# warn("CHECKING : %s %d " % (p, ((d & 3) == 0 and (d > 1000 or d == 0))))
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# return (d & (align - 1)) and (d > 1000 or d == 0)
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def checkAccess(p, align = 1):
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return p.dereference()
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def checkContents(p, expected, align = 1):
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if int(p.dereference()) != expected:
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raise RuntimeError("Contents check failed")
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def checkPointer(p, align = 1):
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if not isNull(p):
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p.dereference()
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def isNull(p):
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s = str(p)
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return s == "0x0" or s.startswith("0x0 ")
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movableTypes = set([
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"QBrush", "QBitArray", "QByteArray",
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"QCustomTypeInfo", "QChar",
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"QDate", "QDateTime",
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"QFileInfo", "QFixed", "QFixedPoint", "QFixedSize",
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"QHashDummyValue",
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"QIcon", "QImage",
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"QLine", "QLineF", "QLatin1Char", "QLocal",
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"QMatrix", "QModelIndex",
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"QPoint", "QPointF", "QPen", "QPersistentModelIndex",
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"QResourceRoot", "QRect", "QRectF", "QRegExp",
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"QSize", "QSizeF", "QString",
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"QTime", "QTextBlock",
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"QUrl",
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"QVariant",
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"QXmlStreamAttribute", "QXmlStreamNamespaceDeclaration",
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"QXmlStreamNotationDeclaration", "QXmlStreamEntityDeclaration"])
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def stripClassTag(type):
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if type.startswith("class "):
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return type[6:]
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return type
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def checkPointerRange(p, n):
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for i in xrange(0, n):
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checkPointer(p)
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++p
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def call(value, func):
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#warn("CALL: %s -> %s" % (value, func))
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type = stripClassTag(str(value.type))
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if type.find(':') >= 0:
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type = "'" + type + "'"
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exp = "((%s*)%s)->%s" % (type, value.address, func)
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#warn("CALL: %s" % exp)
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result = gdb.parse_and_eval(exp)
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#warn(" -> %s" % result)
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return result
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def qtNamespace():
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try:
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type = str(gdb.parse_and_eval("&QString::null").type.target().unqualified())
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return type[0:len(type) - len("QString::null")]
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except RuntimeError:
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return ""
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def encodeCharArray(p, size):
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s = ""
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for i in xrange(0, size):
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s += "%02x" % int(p.dereference())
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p += 1
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return s
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def encodeByteArray(value):
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d_ptr = value['d'].dereference()
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data = d_ptr['data']
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size = d_ptr['size']
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alloc = d_ptr['alloc']
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check(0 <= size and size <= alloc and alloc <= 100*1000*1000)
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check(d_ptr["ref"]["_q_value"] > 0)
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if size > 0:
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checkAccess(data, 4)
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checkAccess(data + size) == 0
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innerType = gdb.lookup_type("char")
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p = gdb.Value(data.cast(innerType.pointer()))
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return encodeCharArray(p, size)
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def encodeString(value):
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d_ptr = value['d'].dereference()
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data = d_ptr['data']
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size = d_ptr['size']
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alloc = d_ptr['alloc']
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check(0 <= size and size <= alloc and alloc <= 100*1000*1000)
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if size > 0:
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checkAccess(data, 4)
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checkAccess(data + size * 2) == 0
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check(d_ptr["ref"]["_q_value"] > 0)
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p = gdb.Value(d_ptr["data"])
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s = ""
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for i in xrange(0, size):
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val = int(p.dereference())
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s += "%02x" % (val % 256)
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s += "%02x" % (val / 256)
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p += 1
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return s
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#######################################################################
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#
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# Item
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#
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#######################################################################
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class Item:
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def __init__(self, value, parentiname, iname, name):
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self.value = value
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if iname is None:
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self.iname = parentiname
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else:
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self.iname = "%s.%s" % (parentiname, iname)
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self.name = name
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#######################################################################
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#
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# FrameCommand
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#
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#######################################################################
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class FrameCommand(gdb.Command):
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"""Do fancy stuff. Usage bb --verbose expandedINames"""
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def __init__(self):
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super(FrameCommand, self).__init__("bb", gdb.COMMAND_OBSCURE)
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def invoke(self, arg, from_tty):
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args = arg.split(' ')
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#warn("ARG: %s" % arg)
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#warn("ARGS: %s" % args)
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useFancy = int(args[0])
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passExceptions = int(args[1])
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expandedINames = set()
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if len(args) > 2:
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expandedINames = set(args[2].split(","))
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#warn("EXPANDED INAMES: %s" % expandedINames)
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module = sys.modules[__name__]
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self.dumpers = {}
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if useFancy == -1:
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output = "dumpers=["
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for key, value in module.__dict__.items():
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if key.startswith("qdump__"):
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if output != "dumpers=[":
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output += ","
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output += '"' + key[7:] + '"'
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output += "],"
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#output += "qtversion=[%d,%d,%d]"
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output += "qtversion=[4,6,0],"
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output += "namespace=\"%s\"," % qtNamespace()
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output += "dumperversion=\"2.0\","
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output += "sizes=[],"
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output += "expressions=[]"
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output += "]"
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print output
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return
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if useFancy:
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for key, value in module.__dict__.items():
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#if callable(value):
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if key.startswith("qdump__"):
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self.dumpers[key[7:]] = value
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d = Dumper()
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d.dumpers = self.dumpers
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d.passExceptions = passExceptions
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d.ns = qtNamespace()
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d.expandedINames = expandedINames
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d.useFancy = useFancy
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#warn(" NAMESPACE IS: '%s'" % d.ns)
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#
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# Locals
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#
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try:
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frame = gdb.selected_frame()
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#warn("FRAME %s: " % frame)
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except RuntimeError:
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return ""
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block = frame.block()
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while True:
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if block is None:
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warn("UNEXPECTED 'None' BLOCK")
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break
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for symbol in block:
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name = symbol.print_name
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if name == "__in_chrg":
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continue
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# "NotImplementedError: Symbol type not yet supported in
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# Python scripts."
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#warn("SYMBOL %s: " % symbol.value)
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#warn("SYMBOL %s (%s): " % (symbol, name))
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item = Item(0, "local", name, name)
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try:
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item.value = frame.read_var(name) # this is a gdb value
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except RuntimeError:
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# happens for void foo() { std::string s; std::wstring w; }
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#warn(" FRAME READ VAR ERROR: %s (%s): " % (symbol, name))
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continue
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#warn("ITEM %s: " % item.value)
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type = item.value.type
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if type.code == gdb.TYPE_CODE_PTR \
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and name == "argv" and str(type) == "char **":
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# Special handling for char** argv:
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n = 0
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p = item.value
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while not isNull(p.dereference()) and n <= 100:
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p += 1
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n += 1
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d.beginHash()
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d.put('iname="%s",' % item.iname)
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d.putName(name)
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d.putItemCount(select(n <= 100, n, "> 100"))
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d.putType(type)
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d.putNumChild(n)
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if d.isExpanded(item):
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p = item.value
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d.beginChildren(n)
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for i in xrange(0, n):
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value = p.dereference()
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d.putItem(Item(value, item.iname, i, None))
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p += 1
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if n > 100:
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d.putEllipsis()
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d.endChildren()
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d.endHash()
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else:
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# A "normal" local variable or parameter
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d.beginHash()
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d.put('iname="%s",' % item.iname)
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d.put('addr="%s",' % item.value.address)
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d.safePutItemHelper(item)
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d.endHash()
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# The outermost block in a function has the function member
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# FIXME: check whether this is guaranteed.
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if not block.function is None:
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break
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block = block.superblock
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#warn("BLOCK %s: " % block)
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d.pushOutput()
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locals = d.safeoutput
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#
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# Watchers
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#
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d.safeoutput = ""
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watchers = ""
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if len(args) > 3:
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watchers = base64.b16decode(args[3], True)
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if len(watchers) > 0:
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for watcher in watchers.split("$$"):
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(exp, name) = watcher.split("$")
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self.handleWatch(d, exp, name)
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d.pushOutput()
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watchers = d.safeoutput
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print('locals={iname="local",name="Locals",value=" ",type=" ",'
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+ 'children=[' + locals + ']},'
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+ 'watchers={iname="watch",name="Watchers",value=" ",type=" ",'
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+ 'children=[' + watchers + ']}')
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def handleWatch(self, d, exp, name):
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#warn("HANDLING WATCH %s, NAME: %s" % (exp, name))
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if exp.startswith("["):
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#warn("EVAL: EXP: %s" % exp)
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d.beginHash()
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d.put('iname="watch.%s",' % name)
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d.put('name="%s",' % exp)
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d.put('exp="%s"' % exp)
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try:
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list = eval(exp)
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#warn("EVAL: LIST: %s" % list)
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d.put('value=" "')
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d.put('type=" "')
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d.put('numchild="%d"' % len(list))
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# This is a list of expressions to evaluate
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d.beginChildren(len(list))
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itemNumber = 0
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for item in list:
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self.handleWatch(d, item, "%s.%d" % (name, itemNumber))
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itemNumber += 1
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d.endChildren()
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except:
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warn("EVAL: ERROR CAUGHT")
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d.put('value="<syntax error>"')
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d.put('type=" "')
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d.put('numchild="0"')
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d.beginChildren(0)
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d.endChildren()
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d.endHash()
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return
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d.beginHash()
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d.put('iname="watch.%s",' % name)
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d.put('name="%s",' % exp)
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d.put('exp="%s"' % exp)
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handled = False
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if exp == "<Edit>":
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d.put(',value=" ",')
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d.put('type=" ",numchild="0"')
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else:
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try:
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value = gdb.parse_and_eval(exp)
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item = Item(value, "watch", name, name)
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d.safePutItemHelper(item)
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except RuntimeError:
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d.put(',value="<invalid>",')
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d.put('type="<unknown>",numchild="0"')
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d.endHash()
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FrameCommand()
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#######################################################################
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#
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# The Dumper Class
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#
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#######################################################################
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class Dumper:
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def __init__(self):
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self.output = ""
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self.safeoutput = ""
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self.childTypes = [""]
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self.childNumChilds = [-1]
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def put(self, value):
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self.output += value
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def putCommaIfNeeded(self):
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c = self.output[-1:]
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if c == '}' or c == '"' or c == ']' or c == '\n':
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self.put(',')
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#warn("C:'%s' COND:'%d' OUT:'%s'" %
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# (c, c == '}' or c == '"' or c == ']' or c == '\n', self.output))
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def putField(self, name, value):
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self.putCommaIfNeeded()
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self.put('%s="%s"' % (name, value))
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def beginHash(self):
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self.putCommaIfNeeded()
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self.put('{')
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def endHash(self):
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self.put('}')
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def beginItem(self, name):
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self.putCommaIfNeeded()
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self.put(name)
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self.put('="')
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def endItem(self):
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self.put('"')
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def beginChildren(self, numChild = 1, type = None, children = None):
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childType = ""
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childNumChild = -1
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if numChild == 0:
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type = None
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self.putCommaIfNeeded()
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if not type is None:
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childType = stripClassTag(str(type))
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self.put('childtype="%s",' % childType)
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if isSimpleType(type) or isStringType(self, type):
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self.put('childnumchild="0",')
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childNumChild = 0
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elif type.code == gdb.TYPE_CODE_PTR:
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self.put('childnumchild="1",')
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childNumChild = 1
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if not children is None:
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self.put('childnumchild="%s",' % children)
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childNumChild = children
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self.childTypes.append(childType)
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self.childNumChilds.append(childNumChild)
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#warn("BEGIN: %s" % self.childTypes)
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self.put("children=[")
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def endChildren(self):
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#warn("END: %s" % self.childTypes)
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self.childTypes.pop()
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self.childNumChilds.pop()
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self.put(']')
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# convenience
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def putItemCount(self, count):
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self.putCommaIfNeeded()
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self.put('value="<%s items>"' % count)
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def putEllipsis(self):
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self.putCommaIfNeeded()
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self.put('{name="<incomplete>",value="",type="",numchild="0"}')
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def putType(self, type):
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#warn("TYPES: '%s' '%s'" % (type, self.childTypes))
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#warn(" EQUAL 2: %s " % (str(type) == self.childTypes[-1]))
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type = stripClassTag(str(type))
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if len(type) > 0 and type != self.childTypes[-1]:
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self.putCommaIfNeeded()
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self.put('type="%s"' % type) # str(type.unqualified()) ?
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def putNumChild(self, numchild):
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#warn("NUM CHILD: '%s' '%s'" % (numchild, self.childNumChilds[-1]))
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if numchild != self.childNumChilds[-1]:
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self.put(',numchild="%s"' % numchild)
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def putValue(self, value, encoding = None):
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if not encoding is None:
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self.putField("valueencoded", encoding)
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self.putField("value", value)
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def putStringValue(self, value):
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str = encodeString(value)
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self.putCommaIfNeeded()
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self.put('valueencoded="%d",value="%s"' % (7, str))
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def putByteArrayValue(self, value):
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str = encodeByteArray(value)
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self.putCommaIfNeeded()
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self.put('valueencoded="%d",value="%s"' % (6, str))
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def putName(self, name):
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self.putCommaIfNeeded()
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self.put('name="%s"' % name)
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def isExpanded(self, item):
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#warn("IS EXPANDED: %s in %s" % (item.iname, self.expandedINames))
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if item.iname is None:
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raise "Illegal iname 'None'"
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if item.iname.startswith("None"):
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raise "Illegal iname '%s'" % item.iname
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#warn(" --> %s" % (item.iname in self.expandedINames))
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return item.iname in self.expandedINames
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def isExpandedIName(self, iname):
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return iname in self.expandedINames
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def unputField(self, name):
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pos = self.output.rfind(",")
|
|
if self.output[pos + 1:].startswith(name):
|
|
self.output = self.output[0:pos]
|
|
|
|
def stripNamespaceFromType(self, typeobj):
|
|
# This breaks for dumpers type names containing '__star'.
|
|
# But this should not happen as identifiers containing two
|
|
# subsequent underscores are reserved for the implemention.
|
|
if typeobj.code == gdb.TYPE_CODE_PTR:
|
|
return self.stripNamespaceFromType(typeobj.target()) + "__star"
|
|
# FIXME: pass ns from plugin
|
|
type = stripClassTag(str(typeobj))
|
|
if len(self.ns) > 0 and type.startswith(self.ns):
|
|
type = type[len(self.ns):]
|
|
pos = type.find("<")
|
|
if pos != -1:
|
|
type = type[0:pos]
|
|
return type
|
|
|
|
def isMovableType(self, type):
|
|
if type.code == gdb.TYPE_CODE_PTR:
|
|
return True
|
|
if isSimpleType(type):
|
|
return True
|
|
return self.stripNamespaceFromType(type) in movableTypes
|
|
|
|
def putIntItem(self, name, value):
|
|
self.beginHash()
|
|
self.putName(name)
|
|
self.putValue(value)
|
|
self.putType("int")
|
|
self.putNumChild(0)
|
|
self.endHash()
|
|
|
|
def putBoolItem(self, name, value):
|
|
self.beginHash()
|
|
self.putName(name)
|
|
self.putValue(value)
|
|
self.putType("bool")
|
|
self.putNumChild(0)
|
|
self.endHash()
|
|
|
|
def pushOutput(self):
|
|
#warn("PUSH OUTPUT: %s " % self.output)
|
|
self.safeoutput += self.output
|
|
self.output = ""
|
|
|
|
def dumpInnerValueHelper(self, item):
|
|
if isSimpleType(item.value.type):
|
|
self.safePutItemHelper(item)
|
|
|
|
def safePutItem(self, item):
|
|
self.beginHash()
|
|
self.safePutItemHelper(item)
|
|
self.endHash()
|
|
|
|
def safePutItemHelper(self, item):
|
|
self.pushOutput()
|
|
# This is only used at the top level to ensure continuation
|
|
# after failures due to uninitialized or corrupted data.
|
|
if self.passExceptions:
|
|
# for debugging reasons propagate errors.
|
|
self.putItemHelper(item)
|
|
|
|
else:
|
|
try:
|
|
self.putItemHelper(item)
|
|
|
|
except RuntimeError:
|
|
self.output = ""
|
|
# FIXME: Only catch debugger related exceptions
|
|
#exType, exValue, exTraceback = sys.exc_info()
|
|
#tb = traceback.format_exception(exType, exValue, exTraceback)
|
|
#warn("Exception: %s" % ex.message)
|
|
# DeprecationWarning: BaseException.message
|
|
# has been deprecated
|
|
#warn("Exception.")
|
|
#for line in tb:
|
|
# warn("%s" % line)
|
|
self.putName(item.name)
|
|
self.putValue("<invalid>")
|
|
self.putType(str(item.value.type))
|
|
self.putNumChild(0)
|
|
#if self.isExpanded(item):
|
|
self.beginChildren()
|
|
self.endChildren()
|
|
self.pushOutput()
|
|
|
|
def putItem(self, item):
|
|
self.beginHash()
|
|
self.safePutItemHelper(item)
|
|
self.endHash()
|
|
|
|
def putCallItem(self, name, item, func):
|
|
result = call(item.value, func)
|
|
self.putItem(Item(result, item.iname, name, name))
|
|
|
|
#def putItemOrPointerHelper(self, item):
|
|
# if item.value.type.code == gdb.TYPE_CODE_PTR \
|
|
# and str(item.value.type.target()) != "char":
|
|
# if not isNull(item.value):
|
|
# self.putItemOrPointerHelper(
|
|
# Item(item.value.dereference(), item.iname, None, None))
|
|
# else:
|
|
# self.putValue("(null)")
|
|
# self.putNumChild(0)
|
|
# else:
|
|
# self.safePutItemHelper(item)
|
|
|
|
|
|
def putItemHelper(self, item):
|
|
name = getattr(item, "name", None)
|
|
if not name is None:
|
|
self.putName(name)
|
|
|
|
# FIXME: Gui shows references stripped?
|
|
#warn("REAL INAME: %s " % item.iname)
|
|
#warn("REAL TYPE: %s " % item.value.type)
|
|
#warn("REAL VALUE: %s " % item.value)
|
|
|
|
value = item.value
|
|
type = value.type
|
|
|
|
if type.code == gdb.TYPE_CODE_REF:
|
|
type = type.target()
|
|
value = value.cast(type)
|
|
|
|
if type.code == gdb.TYPE_CODE_TYPEDEF:
|
|
type = type.target()
|
|
|
|
strippedType = self.stripNamespaceFromType(
|
|
type.strip_typedefs().unqualified()).replace("::", "__")
|
|
|
|
#warn(" STRIPPED: %s" % strippedType)
|
|
#warn(" DUMPERS: %s" % self.dumpers)
|
|
#warn(" DUMPERS: %s" % (strippedType in self.dumpers))
|
|
|
|
if isSimpleType(type):
|
|
#warn("IS SIMPLE: %s " % type)
|
|
self.putType(item.value.type)
|
|
self.putValue(value)
|
|
self.putNumChild(0)
|
|
|
|
elif strippedType in self.dumpers:
|
|
#warn("IS DUMPABLE: %s " % type)
|
|
self.putType(item.value.type)
|
|
self.dumpers[strippedType](self, item)
|
|
|
|
elif type.code == gdb.TYPE_CODE_ENUM:
|
|
#warn("GENERIC ENUM: %s" % value)
|
|
self.putType(item.value.type)
|
|
self.putValue(value)
|
|
self.putNumChild(0)
|
|
|
|
|
|
elif type.code == gdb.TYPE_CODE_PTR:
|
|
if self.useFancy:
|
|
#warn("A POINTER: %s" % value.type)
|
|
isHandled = False
|
|
if isNull(value):
|
|
self.putValue("0x0")
|
|
self.putType(item.value.type)
|
|
self.putNumChild(0)
|
|
isHandled = True
|
|
|
|
target = str(type.target().unqualified())
|
|
if target == "void" and not isHandled:
|
|
self.putType(item.value.type)
|
|
self.putValue(str(value))
|
|
self.putNumChild(0)
|
|
isHandled = True
|
|
|
|
if target == "char" and not isHandled:
|
|
# Display values up to given length directly
|
|
self.putType(item.value.type)
|
|
firstNul = -1
|
|
p = value
|
|
for i in xrange(0, 100):
|
|
if p.dereference() == 0:
|
|
# Found terminating NUL
|
|
self.putValue(encodeCharArray(value, i), "6")
|
|
self.putNumChild(0)
|
|
isHandled = True
|
|
break
|
|
p += 1
|
|
|
|
if not isHandled:
|
|
## Generic pointer type.
|
|
#warn("GENERIC POINTER: %s" % value)
|
|
innerType = item.value.type.target()
|
|
self.putType(innerType)
|
|
self.childTypes.append(
|
|
stripClassTag(str(innerType)))
|
|
#self.putType(item.value.type.target())
|
|
self.putItemHelper(
|
|
Item(item.value.dereference(), item.iname, None, None))
|
|
self.childTypes.pop()
|
|
else:
|
|
self.putType(item.value.type)
|
|
self.putValue(str(value.address))
|
|
self.putNumChild(1)
|
|
if self.isExpanded(item):
|
|
self.beginChildren()
|
|
self.putItem(
|
|
Item(item.value.dereference(), item.iname, "*", "*"))
|
|
self.endChildren()
|
|
|
|
else:
|
|
#warn("INAME: %s " % item.iname)
|
|
#warn("INAMES: %s " % self.expandedINames)
|
|
#warn("EXPANDED: %s " % (item.iname in self.expandedINames))
|
|
|
|
# insufficient, see http://sourceware.org/bugzilla/show_bug.cgi?id=10953
|
|
#fields = value.type.fields()
|
|
fields = value.type.strip_typedefs().fields()
|
|
|
|
self.putType(item.value.type)
|
|
self.putValue("{...}")
|
|
|
|
if False:
|
|
numfields = 0
|
|
for field in fields:
|
|
bitpos = getattr(field, "bitpos", None)
|
|
if not bitpos is None:
|
|
++numfields
|
|
else:
|
|
numfields = len(fields)
|
|
self.putNumChild(numfields)
|
|
|
|
if self.isExpanded(item):
|
|
innerType = None
|
|
if len(fields) == 1 and fields[0].name is None:
|
|
innerType = value.type.target()
|
|
self.beginChildren(1, innerType)
|
|
|
|
baseNumber = 0
|
|
for field in fields:
|
|
#warn("FIELD: %s" % field)
|
|
#warn(" BITSIZE: %s" % field.bitsize)
|
|
#warn(" ARTIFICIAL: %s" % field.artificial)
|
|
bitpos = getattr(field, "bitpos", None)
|
|
if bitpos is None: # FIXME: Is check correct?
|
|
continue # A static class member(?).
|
|
|
|
if field.name is None:
|
|
innerType = value.type.target()
|
|
p = value.cast(innerType.pointer())
|
|
for i in xrange(0, value.type.sizeof / innerType.sizeof):
|
|
self.putItem(Item(p.dereference(), item.iname, i, None))
|
|
p = p + 1
|
|
continue
|
|
|
|
# ignore vtable pointers for virtual inheritance
|
|
if field.name.startswith("_vptr."):
|
|
continue
|
|
|
|
#warn("FIELD NAME: %s" % field.name)
|
|
#warn("FIELD TYPE: %s" % field.type)
|
|
if field.name == stripClassTag(str(field.type)):
|
|
# Field is base type. We cannot use field.name as part
|
|
# of the iname as it might contain spaces and other
|
|
# strange characters.
|
|
child = Item(value.cast(field.type),
|
|
item.iname, "@%d" % baseNumber, field.name)
|
|
baseNumber += 1
|
|
self.beginHash()
|
|
self.putField("iname", child.iname)
|
|
self.safePutItemHelper(child)
|
|
self.endHash()
|
|
else:
|
|
# Data member.
|
|
child = Item(value[field.name],
|
|
item.iname, field.name, field.name)
|
|
if not child.name:
|
|
child.name = "<anon>"
|
|
self.beginHash()
|
|
self.safePutItemHelper(child)
|
|
self.endHash()
|
|
self.endChildren()
|