forked from qt-creator/qt-creator
fee7cbe55b
In preparation for re-use through LLDB. Not yet functional there. Change-Id: Ia924f1499a1bbaebf3dccbe15152f324058b1677 Reviewed-by: hjk <hjk@theqtcompany.com>
1958 lines
66 KiB
Python
1958 lines
66 KiB
Python
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try:
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import __builtin__
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except:
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import builtins
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try:
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import gdb
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except:
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pass
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import os
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import os.path
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import sys
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import struct
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import types
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def warn(message):
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print("XXX: %s\n" % message.encode("latin1"))
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from dumper import *
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#######################################################################
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#
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# Infrastructure
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#
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#######################################################################
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def savePrint(output):
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try:
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print(output)
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except:
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out = ""
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for c in output:
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cc = ord(c)
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if cc > 127:
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out += "\\\\%d" % cc
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elif cc < 0:
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out += "\\\\%d" % (cc + 256)
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else:
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out += c
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print(out)
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def registerCommand(name, func):
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class Command(gdb.Command):
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def __init__(self):
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super(Command, self).__init__(name, gdb.COMMAND_OBSCURE)
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def invoke(self, args, from_tty):
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savePrint(func(args))
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Command()
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#######################################################################
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#
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# Types
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#
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#######################################################################
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PointerCode = gdb.TYPE_CODE_PTR
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ArrayCode = gdb.TYPE_CODE_ARRAY
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StructCode = gdb.TYPE_CODE_STRUCT
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UnionCode = gdb.TYPE_CODE_UNION
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EnumCode = gdb.TYPE_CODE_ENUM
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FlagsCode = gdb.TYPE_CODE_FLAGS
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FunctionCode = gdb.TYPE_CODE_FUNC
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IntCode = gdb.TYPE_CODE_INT
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FloatCode = gdb.TYPE_CODE_FLT # Parts of GDB assume that this means complex.
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VoidCode = gdb.TYPE_CODE_VOID
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#SetCode = gdb.TYPE_CODE_SET
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RangeCode = gdb.TYPE_CODE_RANGE
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StringCode = gdb.TYPE_CODE_STRING
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#BitStringCode = gdb.TYPE_CODE_BITSTRING
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#ErrorTypeCode = gdb.TYPE_CODE_ERROR
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MethodCode = gdb.TYPE_CODE_METHOD
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MethodPointerCode = gdb.TYPE_CODE_METHODPTR
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MemberPointerCode = gdb.TYPE_CODE_MEMBERPTR
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ReferenceCode = gdb.TYPE_CODE_REF
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CharCode = gdb.TYPE_CODE_CHAR
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BoolCode = gdb.TYPE_CODE_BOOL
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ComplexCode = gdb.TYPE_CODE_COMPLEX
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TypedefCode = gdb.TYPE_CODE_TYPEDEF
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NamespaceCode = gdb.TYPE_CODE_NAMESPACE
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#Code = gdb.TYPE_CODE_DECFLOAT # Decimal floating point.
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#Code = gdb.TYPE_CODE_MODULE # Fortran
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#Code = gdb.TYPE_CODE_INTERNAL_FUNCTION
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#######################################################################
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#
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# Convenience
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#
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#######################################################################
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# Just convienience for 'python print ...'
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class PPCommand(gdb.Command):
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def __init__(self):
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super(PPCommand, self).__init__("pp", gdb.COMMAND_OBSCURE)
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def invoke(self, args, from_tty):
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print(eval(args))
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PPCommand()
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# Just convienience for 'python print gdb.parse_and_eval(...)'
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class PPPCommand(gdb.Command):
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def __init__(self):
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super(PPPCommand, self).__init__("ppp", gdb.COMMAND_OBSCURE)
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def invoke(self, args, from_tty):
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print(gdb.parse_and_eval(args))
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PPPCommand()
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def scanStack(p, n):
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p = int(p)
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r = []
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for i in xrange(n):
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f = gdb.parse_and_eval("{void*}%s" % p)
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m = gdb.execute("info symbol %s" % f, to_string=True)
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if not m.startswith("No symbol matches"):
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r.append(m)
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p += f.type.sizeof
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return r
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class ScanStackCommand(gdb.Command):
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def __init__(self):
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super(ScanStackCommand, self).__init__("scanStack", gdb.COMMAND_OBSCURE)
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def invoke(self, args, from_tty):
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if len(args) == 0:
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args = 20
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savePrint(scanStack(gdb.parse_and_eval("$sp"), int(args)))
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ScanStackCommand()
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def bbsetup(args = ''):
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print(theDumper.findDumperFunctions())
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registerCommand("bbsetup", bbsetup)
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#######################################################################
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#
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# Import plain gdb pretty printers
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#
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#######################################################################
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class PlainDumper:
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def __init__(self, printer):
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self.printer = printer
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def __call__(self, d, value):
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printer = self.printer.invoke(value)
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lister = getattr(printer, "children", None)
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children = [] if lister is None else list(lister())
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d.putType(self.printer.name)
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val = printer.to_string()
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if isinstance(val, str):
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d.putValue(val)
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else: # Assuming LazyString
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d.putStdStringHelper(val.address, val.length, val.type.sizeof)
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d.putNumChild(len(children))
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if d.isExpanded():
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with Children(d):
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for child in children:
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d.putSubItem(child[0], child[1])
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def importPlainDumpers(args):
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if args == "off":
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gdb.execute("disable pretty-printer .* .*")
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else:
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theDumper.importPlainDumpers()
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registerCommand("importPlainDumpers", importPlainDumpers)
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class OutputSafer:
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def __init__(self, d):
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self.d = d
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def __enter__(self):
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self.savedOutput = self.d.output
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self.d.output = []
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def __exit__(self, exType, exValue, exTraceBack):
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if self.d.passExceptions and not exType is None:
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showException("OUTPUTSAFER", exType, exValue, exTraceBack)
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self.d.output = self.savedOutput
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else:
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self.savedOutput.extend(self.d.output)
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self.d.output = self.savedOutput
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return False
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#def couldBePointer(p, align):
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# typeobj = lookupType("unsigned int")
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# ptr = gdb.Value(p).cast(typeobj)
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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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Value = gdb.Value
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def stripTypedefs(typeobj):
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typeobj = typeobj.unqualified()
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while typeobj.code == TypedefCode:
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typeobj = typeobj.strip_typedefs().unqualified()
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return typeobj
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#######################################################################
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#
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# Edit Command
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#
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#######################################################################
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def bbedit(args):
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theDumper.bbedit(args)
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registerCommand("bbedit", bbedit)
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#######################################################################
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#
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# Frame Command
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#
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#######################################################################
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def bb(args):
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try:
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print(theDumper.run(args))
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except:
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import traceback
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traceback.print_exc()
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registerCommand("bb", bb)
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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(DumperBase):
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def __init__(self):
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DumperBase.__init__(self)
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# These values will be kept between calls to 'run'.
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self.isGdb = True
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self.childEventAddress = None
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self.typesReported = {}
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self.typesToReport = {}
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self.qtNamespaceToReport = None
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self.qmlEngines = []
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self.qmlBreakpoints = []
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def prepare(self, args):
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self.output = []
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self.currentIName = ""
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self.currentPrintsAddress = True
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self.currentChildType = ""
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self.currentChildNumChild = -1
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self.currentMaxNumChild = -1
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self.currentNumChild = -1
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self.currentValue = ReportItem()
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self.currentType = ReportItem()
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self.currentAddress = None
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self.typeformats = {}
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self.formats = {}
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self.useDynamicType = True
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self.expandedINames = {}
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self.qmlcontext = ""
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# The guess does not need to be updated during a run()
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# as the result is fixed during that time (ignoring "active"
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# dumpers causing loading of shared objects etc).
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self.currentQtNamespaceGuess = None
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self.watchers = ""
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self.resultVarName = ""
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self.varList = []
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self.options = []
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for arg in args.split(' '):
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pos = arg.find(":") + 1
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if arg.startswith("options:"):
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self.options = arg[pos:].split(",")
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elif arg.startswith("vars:"):
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if len(arg[pos:]) > 0:
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self.varList = arg[pos:].split(",")
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elif arg.startswith("resultvarname:"):
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self.resultVarName = arg[pos:]
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elif arg.startswith("expanded:"):
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self.expandedINames = set(arg[pos:].split(","))
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elif arg.startswith("stringcutoff:"):
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self.stringCutOff = int(arg[pos:])
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elif arg.startswith("displaystringlimit:"):
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self.displayStringLimit = int(arg[pos:])
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elif arg.startswith("typeformats:"):
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for f in arg[pos:].split(","):
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pos = f.find("=")
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if pos != -1:
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typeName = self.hexdecode(f[0:pos])
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self.typeformats[typeName] = int(f[pos+1:])
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elif arg.startswith("formats:"):
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for f in arg[pos:].split(","):
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pos = f.find("=")
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if pos != -1:
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self.formats[f[0:pos]] = int(f[pos+1:])
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elif arg.startswith("watchers:"):
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self.watchers = self.hexdecode(arg[pos:])
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elif arg.startswith("qmlcontext:"):
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self.qmlcontext = int(arg[pos:], 0)
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self.useDynamicType = "dyntype" in self.options
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self.useFancy = "fancy" in self.options
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self.forceQtNamespace = "forcens" in self.options
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self.passExceptions = "pe" in self.options
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self.nativeMixed = "nativemixed" in self.options
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self.autoDerefPointers = "autoderef" in self.options
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self.partialUpdate = "partial" in self.options
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self.tooltipOnly = "tooltiponly" in self.options
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self.fallbackQtVersion = 0x50200
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#warn("NAMESPACE: '%s'" % self.qtNamespace())
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#warn("VARIABLES: %s" % self.varList)
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#warn("EXPANDED INAMES: %s" % self.expandedINames)
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#warn("WATCHERS: %s" % self.watchers)
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#warn("PARTIAL: %s" % self.partialUpdate)
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def handleWatches(self):
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with OutputSafer(self):
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if len(self.watchers) > 0:
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for watcher in self.watchers.split("##"):
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(exp, iname) = watcher.split("#")
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self.handleWatch(exp, exp, iname)
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def listOfLocals(self):
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frame = gdb.selected_frame()
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try:
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block = frame.block()
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#warn("BLOCK: %s " % block)
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except RuntimeError as error:
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#warn("BLOCK IN FRAME NOT ACCESSIBLE: %s" % error)
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return []
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except:
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warn("BLOCK NOT ACCESSIBLE FOR UNKNOWN REASONS")
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return []
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items = []
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shadowed = {}
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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" or name == "__PRETTY_FUNCTION__":
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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 (%s): " % (symbol, name))
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if name in shadowed:
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level = shadowed[name]
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name1 = "%s@%s" % (name, level)
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shadowed[name] = level + 1
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else:
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name1 = name
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shadowed[name] = 1
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#warn("SYMBOL %s (%s, %s)): " % (symbol, name, symbol.name))
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item = self.LocalItem()
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item.iname = "local." + name1
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item.name = name1
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try:
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item.value = frame.read_var(name, block)
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#warn("READ 1: %s" % item.value)
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items.append(item)
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continue
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except:
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pass
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try:
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#warn("READ 2: %s" % item.value)
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item.value = frame.read_var(name)
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items.append(item)
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continue
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except:
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# RuntimeError: happens for
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# void foo() { std::string s; std::wstring w; }
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# ValueError: happens for (as of 2010/11/4)
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# a local struct as found e.g. in
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# gcc sources in gcc.c, int execute()
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pass
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try:
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#warn("READ 3: %s %s" % (name, item.value))
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item.value = gdb.parse_and_eval(name)
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#warn("ITEM 3: %s" % item.value)
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items.append(item)
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except:
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# Can happen in inlined code (see last line of
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# RowPainter::paintChars(): "RuntimeError:
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# No symbol \"__val\" in current context.\n"
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pass
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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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return items
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def run(self, args):
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self.prepare(args)
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#
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# Locals
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#
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self.output.append('data=[')
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if self.qmlcontext:
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locals = self.extractQmlVariables(self.qmlcontext)
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elif self.partialUpdate and len(self.varList) == 1:
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#warn("PARTIAL: %s" % self.varList)
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parts = self.varList[0].split('.')
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#warn("PARTIAL PARTS: %s" % parts)
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name = parts[1]
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#warn("PARTIAL VAR: %s" % name)
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item = self.LocalItem()
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item.iname = parts[0] + '.' + name
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item.name = name
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try:
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if parts[0] == 'local':
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frame = gdb.selected_frame()
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item.value = frame.read_var(name)
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else:
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item.name = self.hexdecode(name)
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item.value = gdb.parse_and_eval(item.name)
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except RuntimeError as error:
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item.value = error
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except:
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item.value = "<no value>"
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locals = [item]
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#warn("PARTIAL LOCALS: %s" % locals)
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else:
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locals = self.listOfLocals()
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# Take care of the return value of the last function call.
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if len(self.resultVarName) > 0:
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try:
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item = self.LocalItem()
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item.name = self.resultVarName
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item.iname = "return." + self.resultVarName
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item.value = self.parseAndEvaluate(self.resultVarName)
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locals.append(item)
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except:
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# Don't bother. It's only supplementary information anyway.
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pass
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for item in locals:
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value = self.downcast(item.value) if self.useDynamicType else item.value
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with OutputSafer(self):
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self.anonNumber = -1
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if item.iname == "local.argv" and str(value.type) == "char **":
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self.putSpecialArgv(value)
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else:
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# A "normal" local variable or parameter.
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with TopLevelItem(self, item.iname):
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self.put('iname="%s",' % item.iname)
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self.put('name="%s",' % item.name)
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self.putItem(value)
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self.handleWatches()
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#print('data=[' + locals + sep + self.watchers + ']\n')
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self.output.append('],typeinfo=[')
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for name in self.typesToReport.keys():
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typeobj = self.typesToReport[name]
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# Happens e.g. for '(anonymous namespace)::InsertDefOperation'
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if not typeobj is None:
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self.output.append('{name="%s",size="%s"}'
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% (self.hexencode(name), typeobj.sizeof))
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self.output.append(']')
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self.typesToReport = {}
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if "forcens" in self.options:
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self.qtNamepaceToReport = self.qtNamespace()
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if self.qtNamespaceToReport:
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self.output.append(',qtnamespace="%s"' % self.qtNamespaceToReport)
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self.qtNamespaceToReport = None
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return "".join(self.output)
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def enterSubItem(self, item):
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if not item.iname:
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item.iname = "%s.%s" % (self.currentIName, item.name)
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#warn("INAME %s" % item.iname)
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self.put('{')
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#if not item.name is None:
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if isinstance(item.name, str):
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self.put('name="%s",' % item.name)
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item.savedIName = self.currentIName
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item.savedValue = self.currentValue
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item.savedType = self.currentType
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item.savedCurrentAddress = self.currentAddress
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self.currentIName = item.iname
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self.currentValue = ReportItem();
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self.currentType = ReportItem();
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self.currentAddress = None
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def exitSubItem(self, item, exType, exValue, exTraceBack):
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#warn("CURRENT VALUE: %s: %s %s" % (self.currentIName, self.currentValue, self.currentType))
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if not exType is None:
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if self.passExceptions:
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showException("SUBITEM", exType, exValue, exTraceBack)
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self.putNumChild(0)
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self.putValue("<not accessible>")
|
|
try:
|
|
if self.currentType.value:
|
|
typeName = self.stripClassTag(self.currentType.value)
|
|
if len(typeName) > 0 and typeName != self.currentChildType:
|
|
self.put('type="%s",' % typeName) # str(type.unqualified()) ?
|
|
|
|
if self.currentValue.value is None:
|
|
self.put('value="<not accessible>",numchild="0",')
|
|
else:
|
|
if not self.currentValue.encoding is None:
|
|
self.put('valueencoded="%d",' % self.currentValue.encoding)
|
|
if self.currentValue.elided:
|
|
self.put('valueelided="%d",' % self.currentValue.elided)
|
|
self.put('value="%s",' % self.currentValue.value)
|
|
except:
|
|
pass
|
|
if not self.currentAddress is None:
|
|
self.put(self.currentAddress)
|
|
self.put('},')
|
|
self.currentIName = item.savedIName
|
|
self.currentValue = item.savedValue
|
|
self.currentType = item.savedType
|
|
self.currentAddress = item.savedCurrentAddress
|
|
return True
|
|
|
|
def parseAndEvaluate(self, exp):
|
|
return gdb.parse_and_eval(exp)
|
|
|
|
def callHelper(self, value, func, args):
|
|
# args is a tuple.
|
|
arg = ""
|
|
for i in range(len(args)):
|
|
if i:
|
|
arg += ','
|
|
a = args[i]
|
|
if (':' in a) and not ("'" in a):
|
|
arg = "'%s'" % a
|
|
else:
|
|
arg += a
|
|
|
|
#warn("CALL: %s -> %s(%s)" % (value, func, arg))
|
|
typeName = self.stripClassTag(str(value.type))
|
|
if typeName.find(":") >= 0:
|
|
typeName = "'" + typeName + "'"
|
|
# 'class' is needed, see http://sourceware.org/bugzilla/show_bug.cgi?id=11912
|
|
#exp = "((class %s*)%s)->%s(%s)" % (typeName, value.address, func, arg)
|
|
ptr = value.address if value.address else self.pokeValue(value)
|
|
exp = "((%s*)%s)->%s(%s)" % (typeName, ptr, func, arg)
|
|
#warn("CALL: %s" % exp)
|
|
result = gdb.parse_and_eval(exp)
|
|
#warn(" -> %s" % result)
|
|
if not value.address:
|
|
gdb.parse_and_eval("free(0x%x)" % ptr)
|
|
return result
|
|
|
|
def childWithName(self, value, name):
|
|
try:
|
|
return value[name]
|
|
except:
|
|
return None
|
|
|
|
def makeValue(self, typeobj, init):
|
|
typename = "::" + self.stripClassTag(str(typeobj));
|
|
# Avoid malloc symbol clash with QVector.
|
|
gdb.execute("set $d = (%s*)calloc(sizeof(%s), 1)" % (typename, typename))
|
|
gdb.execute("set *$d = {%s}" % init)
|
|
value = gdb.parse_and_eval("$d").dereference()
|
|
#warn(" TYPE: %s" % value.type)
|
|
#warn(" ADDR: %s" % value.address)
|
|
#warn(" VALUE: %s" % value)
|
|
return value
|
|
|
|
def makeExpression(self, value):
|
|
typename = "::" + self.stripClassTag(str(value.type))
|
|
#warn(" TYPE: %s" % typename)
|
|
#exp = "(*(%s*)(&%s))" % (typename, value.address)
|
|
exp = "(*(%s*)(%s))" % (typename, value.address)
|
|
#warn(" EXP: %s" % exp)
|
|
return exp
|
|
|
|
def makeStdString(init):
|
|
# Works only for small allocators, but they are usually empty.
|
|
gdb.execute("set $d=(std::string*)calloc(sizeof(std::string), 2)");
|
|
gdb.execute("call($d->basic_string(\"" + init +
|
|
"\",*(std::allocator<char>*)(1+$d)))")
|
|
value = gdb.parse_and_eval("$d").dereference()
|
|
#warn(" TYPE: %s" % value.type)
|
|
#warn(" ADDR: %s" % value.address)
|
|
#warn(" VALUE: %s" % value)
|
|
return value
|
|
|
|
def childAt(self, value, index):
|
|
field = value.type.fields()[index]
|
|
try:
|
|
# Official access in GDB 7.6 or later.
|
|
return value[field]
|
|
except:
|
|
pass
|
|
|
|
try:
|
|
# Won't work with anon entities, tradionally with empty
|
|
# field name, but starting with GDB 7.7 commit b5b08fb4
|
|
# with None field name.
|
|
return value[field.name]
|
|
except:
|
|
pass
|
|
|
|
# FIXME: Cheat. There seems to be no official way to access
|
|
# the real item, so we pass back the value. That at least
|
|
# enables later ...["name"] style accesses as gdb handles
|
|
# them transparently.
|
|
return value
|
|
|
|
def fieldAt(self, typeobj, index):
|
|
return typeobj.fields()[index]
|
|
|
|
def simpleValue(self, value):
|
|
return str(value)
|
|
|
|
def directBaseClass(self, typeobj, index = 0):
|
|
for f in typeobj.fields():
|
|
if f.is_base_class:
|
|
if index == 0:
|
|
return f.type
|
|
index -= 1;
|
|
return None
|
|
|
|
def directBaseObject(self, value, index = 0):
|
|
for f in value.type.fields():
|
|
if f.is_base_class:
|
|
if index == 0:
|
|
return value.cast(f.type)
|
|
index -= 1;
|
|
return None
|
|
|
|
def checkPointer(self, p, align = 1):
|
|
if not self.isNull(p):
|
|
p.dereference()
|
|
|
|
def pointerValue(self, p):
|
|
return toInteger(p)
|
|
|
|
def isNull(self, p):
|
|
# The following can cause evaluation to abort with "UnicodeEncodeError"
|
|
# for invalid char *, as their "contents" is being examined
|
|
#s = str(p)
|
|
#return s == "0x0" or s.startswith("0x0 ")
|
|
#try:
|
|
# # Can fail with: "RuntimeError: Cannot access memory at address 0x5"
|
|
# return p.cast(self.lookupType("void").pointer()) == 0
|
|
#except:
|
|
# return False
|
|
try:
|
|
# Can fail with: "RuntimeError: Cannot access memory at address 0x5"
|
|
return toInteger(p) == 0
|
|
except:
|
|
return False
|
|
|
|
def templateArgument(self, typeobj, position):
|
|
try:
|
|
# This fails on stock 7.2 with
|
|
# "RuntimeError: No type named myns::QObject.\n"
|
|
return typeobj.template_argument(position)
|
|
except:
|
|
# That's something like "myns::QList<...>"
|
|
return self.lookupType(self.extractTemplateArgument(str(typeobj.strip_typedefs()), position))
|
|
|
|
def numericTemplateArgument(self, typeobj, position):
|
|
# Workaround for gdb < 7.1
|
|
try:
|
|
return int(typeobj.template_argument(position))
|
|
except RuntimeError as error:
|
|
# ": No type named 30."
|
|
msg = str(error)
|
|
msg = msg[14:-1]
|
|
# gdb at least until 7.4 produces for std::array<int, 4u>
|
|
# for template_argument(1): RuntimeError: No type named 4u.
|
|
if msg[-1] == 'u':
|
|
msg = msg[0:-1]
|
|
return int(msg)
|
|
|
|
def intType(self):
|
|
self.cachedIntType = self.lookupType('int')
|
|
self.intType = lambda: self.cachedIntType
|
|
return self.cachedIntType
|
|
|
|
def charType(self):
|
|
return self.lookupType('char')
|
|
|
|
def sizetType(self):
|
|
return self.lookupType('size_t')
|
|
|
|
def charPtrType(self):
|
|
return self.lookupType('char*')
|
|
|
|
def voidPtrType(self):
|
|
return self.lookupType('void*')
|
|
|
|
def addressOf(self, value):
|
|
return toInteger(value.address)
|
|
|
|
def createPointerValue(self, address, pointeeType):
|
|
# This might not always work:
|
|
# a Python 3 based GDB due to the bug addressed in
|
|
# https://sourceware.org/ml/gdb-patches/2013-09/msg00571.html
|
|
try:
|
|
return gdb.Value(address).cast(pointeeType.pointer())
|
|
except:
|
|
# Try _some_ fallback (good enough for the std::complex dumper)
|
|
return gdb.parse_and_eval("(%s*)%s" % (pointeeType, address))
|
|
|
|
def intSize(self):
|
|
return 4
|
|
|
|
def ptrSize(self):
|
|
self.cachedPtrSize = self.lookupType('void*').sizeof
|
|
self.ptrSize = lambda: self.cachedPtrSize
|
|
return self.cachedPtrSize
|
|
|
|
def pokeValue(self, value):
|
|
"""
|
|
Allocates inferior memory and copies the contents of value.
|
|
Returns a pointer to the copy.
|
|
"""
|
|
# Avoid malloc symbol clash with QVector
|
|
size = value.type.sizeof
|
|
data = value.cast(gdb.lookup_type("unsigned char").array(0, int(size - 1)))
|
|
string = ''.join("\\x%02x" % int(data[i]) for i in range(size))
|
|
exp = '(%s*)memcpy(calloc(%s, 1), "%s", %s)' % (value.type, size, string, size)
|
|
#warn("EXP: %s" % exp)
|
|
return toInteger(gdb.parse_and_eval(exp))
|
|
|
|
|
|
def createValue(self, address, referencedType):
|
|
try:
|
|
return gdb.Value(address).cast(referencedType.pointer()).dereference()
|
|
except:
|
|
# Try _some_ fallback (good enough for the std::complex dumper)
|
|
return gdb.parse_and_eval("{%s}%s" % (referencedType, address))
|
|
|
|
def setValue(self, address, typename, value):
|
|
cmd = "set {%s}%s=%s" % (typename, address, value)
|
|
gdb.execute(cmd)
|
|
|
|
def setValues(self, address, typename, values):
|
|
cmd = "set {%s[%s]}%s={%s}" \
|
|
% (typename, len(values), address, ','.join(map(str, values)))
|
|
gdb.execute(cmd)
|
|
|
|
def selectedInferior(self):
|
|
try:
|
|
# gdb.Inferior is new in gdb 7.2
|
|
self.cachedInferior = gdb.selected_inferior()
|
|
except:
|
|
# Pre gdb 7.4. Right now we don't have more than one inferior anyway.
|
|
self.cachedInferior = gdb.inferiors()[0]
|
|
|
|
# Memoize result.
|
|
self.selectedInferior = lambda: self.cachedInferior
|
|
return self.cachedInferior
|
|
|
|
def readRawMemory(self, addr, size):
|
|
mem = self.selectedInferior().read_memory(addr, size)
|
|
if sys.version_info[0] >= 3:
|
|
mem.tobytes()
|
|
return mem
|
|
|
|
def extractInt64(self, addr):
|
|
return struct.unpack("q", self.readRawMemory(addr, 8))[0]
|
|
|
|
def extractInt(self, addr):
|
|
return struct.unpack("i", self.readRawMemory(addr, 4))[0]
|
|
|
|
def extractByte(self, addr):
|
|
return struct.unpack("b", self.readRawMemory(addr, 1))[0]
|
|
|
|
def findStaticMetaObject(self, typename):
|
|
return self.findSymbol(typename + "::staticMetaObject")
|
|
|
|
def findSymbol(self, symbolName):
|
|
try:
|
|
result = gdb.lookup_global_symbol(symbolName)
|
|
return result.value() if result else 0
|
|
except:
|
|
pass
|
|
# Older GDB ~7.4
|
|
try:
|
|
address = gdb.parse_and_eval("&'%s'" % symbolName)
|
|
typeobj = gdb.lookup_type(self.qtNamespace() + "QMetaObject")
|
|
return self.createPointerValue(address, typeobj)
|
|
except:
|
|
return 0
|
|
|
|
def put(self, value):
|
|
self.output.append(value)
|
|
|
|
def childRange(self):
|
|
if self.currentMaxNumChild is None:
|
|
return xrange(0, toInteger(self.currentNumChild))
|
|
return xrange(min(toInteger(self.currentMaxNumChild), toInteger(self.currentNumChild)))
|
|
|
|
def isArmArchitecture(self):
|
|
return 'arm' in gdb.TARGET_CONFIG.lower()
|
|
|
|
def isQnxTarget(self):
|
|
return 'qnx' in gdb.TARGET_CONFIG.lower()
|
|
|
|
def isWindowsTarget(self):
|
|
# We get i686-w64-mingw32
|
|
return 'mingw' in gdb.TARGET_CONFIG.lower()
|
|
|
|
def qtVersionString(self):
|
|
try:
|
|
return str(gdb.lookup_symbol("qVersion")[0].value()())
|
|
except:
|
|
pass
|
|
try:
|
|
ns = self.qtNamespace()
|
|
return str(gdb.parse_and_eval("((const char*(*)())'%sqVersion')()" % ns))
|
|
except:
|
|
pass
|
|
return None
|
|
|
|
def qtVersion(self):
|
|
try:
|
|
version = self.qtVersionString()
|
|
(major, minor, patch) = version[version.find('"')+1:version.rfind('"')].split('.')
|
|
qtversion = 0x10000 * int(major) + 0x100 * int(minor) + int(patch)
|
|
self.qtVersion = lambda: qtversion
|
|
return qtversion
|
|
except:
|
|
# Use fallback until we have a better answer.
|
|
return self.fallbackQtVersion
|
|
|
|
def isQt3Support(self):
|
|
if self.qtVersion() >= 0x050000:
|
|
return False
|
|
else:
|
|
try:
|
|
# This will fail on Qt 4 without Qt 3 support
|
|
gdb.execute("ptype QChar::null", to_string=True)
|
|
self.cachedIsQt3Suport = True
|
|
except:
|
|
self.cachedIsQt3Suport = False
|
|
|
|
# Memoize good results.
|
|
self.isQt3Support = lambda: self.cachedIsQt3Suport
|
|
return self.cachedIsQt3Suport
|
|
|
|
def putAddress(self, addr):
|
|
if self.currentPrintsAddress and not self.isCli:
|
|
try:
|
|
# addr can be "None", int(None) fails.
|
|
#self.put('addr="0x%x",' % int(addr))
|
|
self.currentAddress = 'addr="0x%x",' % toInteger(addr)
|
|
except:
|
|
pass
|
|
|
|
def putNumChild(self, numchild):
|
|
#warn("NUM CHILD: '%s' '%s'" % (numchild, self.currentChildNumChild))
|
|
if numchild != self.currentChildNumChild:
|
|
self.put('numchild="%s",' % numchild)
|
|
|
|
def putSimpleValue(self, value, encoding = None, priority = 0):
|
|
self.putValue(value, encoding, priority)
|
|
|
|
def putPointerValue(self, value):
|
|
# Use a lower priority
|
|
if value is None:
|
|
self.putEmptyValue(-1)
|
|
else:
|
|
self.putValue("0x%x" % value.cast(
|
|
self.lookupType("unsigned long")), None, -1)
|
|
|
|
def stripNamespaceFromType(self, typeName):
|
|
typename = self.stripClassTag(typeName)
|
|
ns = self.qtNamespace()
|
|
if len(ns) > 0 and typename.startswith(ns):
|
|
typename = typename[len(ns):]
|
|
pos = typename.find("<")
|
|
# FIXME: make it recognize foo<A>::bar<B>::iterator?
|
|
while pos != -1:
|
|
pos1 = typename.rfind(">", pos)
|
|
typename = typename[0:pos] + typename[pos1+1:]
|
|
pos = typename.find("<")
|
|
return typename
|
|
|
|
def isMovableType(self, typeobj):
|
|
if typeobj.code == PointerCode:
|
|
return True
|
|
if self.isSimpleType(typeobj):
|
|
return True
|
|
return self.isKnownMovableType(self.stripNamespaceFromType(str(typeobj)))
|
|
|
|
def putSubItem(self, component, value, tryDynamic=True):
|
|
with SubItem(self, component):
|
|
self.putItem(value, tryDynamic)
|
|
|
|
def isSimpleType(self, typeobj):
|
|
code = typeobj.code
|
|
return code == BoolCode \
|
|
or code == CharCode \
|
|
or code == IntCode \
|
|
or code == FloatCode \
|
|
or code == EnumCode
|
|
|
|
def simpleEncoding(self, typeobj):
|
|
code = typeobj.code
|
|
if code == BoolCode or code == CharCode:
|
|
return Hex2EncodedInt1
|
|
if code == IntCode:
|
|
if str(typeobj).find("unsigned") >= 0:
|
|
if typeobj.sizeof == 1:
|
|
return Hex2EncodedUInt1
|
|
if typeobj.sizeof == 2:
|
|
return Hex2EncodedUInt2
|
|
if typeobj.sizeof == 4:
|
|
return Hex2EncodedUInt4
|
|
if typeobj.sizeof == 8:
|
|
return Hex2EncodedUInt8
|
|
else:
|
|
if typeobj.sizeof == 1:
|
|
return Hex2EncodedInt1
|
|
if typeobj.sizeof == 2:
|
|
return Hex2EncodedInt2
|
|
if typeobj.sizeof == 4:
|
|
return Hex2EncodedInt4
|
|
if typeobj.sizeof == 8:
|
|
return Hex2EncodedInt8
|
|
if code == FloatCode:
|
|
if typeobj.sizeof == 4:
|
|
return Hex2EncodedFloat4
|
|
if typeobj.sizeof == 8:
|
|
return Hex2EncodedFloat8
|
|
return None
|
|
|
|
def isReferenceType(self, typeobj):
|
|
return typeobj.code == gdb.TYPE_CODE_REF
|
|
|
|
def isStructType(self, typeobj):
|
|
return typeobj.code == gdb.TYPE_CODE_STRUCT
|
|
|
|
def isFunctionType(self, typeobj):
|
|
return typeobj.code == MethodCode or typeobj.code == FunctionCode
|
|
|
|
def putItem(self, value, tryDynamic=True):
|
|
if value is None:
|
|
# Happens for non-available watchers in gdb versions that
|
|
# need to use gdb.execute instead of gdb.parse_and_eval
|
|
self.putValue("<not available>")
|
|
self.putType("<unknown>")
|
|
self.putNumChild(0)
|
|
return
|
|
|
|
typeobj = value.type.unqualified()
|
|
typeName = str(typeobj)
|
|
|
|
if value.is_optimized_out:
|
|
self.putValue("<optimized out>")
|
|
self.putType(typeName)
|
|
self.putNumChild(0)
|
|
return
|
|
|
|
tryDynamic &= self.useDynamicType
|
|
self.addToCache(typeobj) # Fill type cache
|
|
if tryDynamic:
|
|
self.putAddress(value.address)
|
|
|
|
# FIXME: Gui shows references stripped?
|
|
#warn(" ")
|
|
#warn("REAL INAME: %s" % self.currentIName)
|
|
#warn("REAL TYPE: %s" % value.type)
|
|
#warn("REAL CODE: %s" % value.type.code)
|
|
#warn("REAL VALUE: %s" % value)
|
|
|
|
if typeobj.code == ReferenceCode:
|
|
try:
|
|
# Try to recognize null references explicitly.
|
|
if toInteger(value.address) == 0:
|
|
self.putValue("<null reference>")
|
|
self.putType(typeName)
|
|
self.putNumChild(0)
|
|
return
|
|
except:
|
|
pass
|
|
|
|
if tryDynamic:
|
|
try:
|
|
# Dynamic references are not supported by gdb, see
|
|
# http://sourceware.org/bugzilla/show_bug.cgi?id=14077.
|
|
# Find the dynamic type manually using referenced_type.
|
|
value = value.referenced_value()
|
|
value = value.cast(value.dynamic_type)
|
|
self.putItem(value)
|
|
self.putBetterType("%s &" % value.type)
|
|
return
|
|
except:
|
|
pass
|
|
|
|
try:
|
|
# FIXME: This throws "RuntimeError: Attempt to dereference a
|
|
# generic pointer." with MinGW's gcc 4.5 when it "identifies"
|
|
# a "QWidget &" as "void &" and with optimized out code.
|
|
self.putItem(value.cast(typeobj.target().unqualified()))
|
|
self.putBetterType("%s &" % self.currentType.value)
|
|
return
|
|
except RuntimeError:
|
|
self.putValue("<optimized out reference>")
|
|
self.putType(typeName)
|
|
self.putNumChild(0)
|
|
return
|
|
|
|
if typeobj.code == IntCode or typeobj.code == CharCode:
|
|
self.putType(typeName)
|
|
if typeobj.sizeof == 1:
|
|
# Force unadorned value transport for char and Co.
|
|
self.putValue(int(value) & 0xff)
|
|
else:
|
|
self.putValue(value)
|
|
self.putNumChild(0)
|
|
return
|
|
|
|
if typeobj.code == FloatCode or typeobj.code == BoolCode:
|
|
self.putType(typeName)
|
|
self.putValue(value)
|
|
self.putNumChild(0)
|
|
return
|
|
|
|
if typeobj.code == EnumCode:
|
|
self.putType(typeName)
|
|
self.putValue("%s (%d)" % (value, value))
|
|
self.putNumChild(0)
|
|
return
|
|
|
|
if typeobj.code == ComplexCode:
|
|
self.putType(typeName)
|
|
self.putValue("%s" % value)
|
|
self.putNumChild(0)
|
|
return
|
|
|
|
if typeobj.code == TypedefCode:
|
|
if typeName in self.qqDumpers:
|
|
self.putType(typeName)
|
|
self.qqDumpers[typeName](self, value)
|
|
return
|
|
|
|
typeobj = stripTypedefs(typeobj)
|
|
# The cast can destroy the address?
|
|
#self.putAddress(value.address)
|
|
# Workaround for http://sourceware.org/bugzilla/show_bug.cgi?id=13380
|
|
if typeobj.code == ArrayCode:
|
|
value = self.parseAndEvaluate("{%s}%s" % (typeobj, value.address))
|
|
else:
|
|
try:
|
|
value = value.cast(typeobj)
|
|
except:
|
|
self.putValue("<optimized out typedef>")
|
|
self.putType(typeName)
|
|
self.putNumChild(0)
|
|
return
|
|
|
|
self.putItem(value)
|
|
self.putBetterType(typeName)
|
|
return
|
|
|
|
if typeobj.code == ArrayCode:
|
|
self.putCStyleArray(value)
|
|
return
|
|
|
|
if typeobj.code == PointerCode:
|
|
# This could still be stored in a register and
|
|
# potentially dereferencable.
|
|
self.putFormattedPointer(value)
|
|
return
|
|
|
|
if typeobj.code == MethodPointerCode \
|
|
or typeobj.code == MethodCode \
|
|
or typeobj.code == FunctionCode \
|
|
or typeobj.code == MemberPointerCode:
|
|
self.putType(typeName)
|
|
self.putValue(value)
|
|
self.putNumChild(0)
|
|
return
|
|
|
|
if typeName.startswith("<anon"):
|
|
# Anonymous union. We need a dummy name to distinguish
|
|
# multiple anonymous unions in the struct.
|
|
self.putType(typeobj)
|
|
self.putValue("{...}")
|
|
self.anonNumber += 1
|
|
with Children(self, 1):
|
|
self.listAnonymous(value, "#%d" % self.anonNumber, typeobj)
|
|
return
|
|
|
|
if typeobj.code == StringCode:
|
|
# FORTRAN strings
|
|
size = typeobj.sizeof
|
|
data = self.readMemory(value.address, size)
|
|
self.putValue(data, Hex2EncodedLatin1, 1)
|
|
self.putType(typeobj)
|
|
|
|
if typeobj.code != StructCode and typeobj.code != UnionCode:
|
|
warn("WRONG ASSUMPTION HERE: %s " % typeobj.code)
|
|
check(False)
|
|
|
|
|
|
if tryDynamic:
|
|
self.putItem(self.expensiveDowncast(value), False)
|
|
return
|
|
|
|
format = self.currentItemFormat(typeName)
|
|
|
|
if self.useFancy and (format is None or format >= 1):
|
|
self.putType(typeName)
|
|
|
|
nsStrippedType = self.stripNamespaceFromType(typeName)\
|
|
.replace("::", "__")
|
|
|
|
# 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
|
|
if nsStrippedType.startswith("_AArray_"):
|
|
qdump_AArray(self, value)
|
|
return
|
|
|
|
#warn(" STRIPPED: %s" % nsStrippedType)
|
|
#warn(" DUMPERS: %s" % self.qqDumpers)
|
|
#warn(" DUMPERS: %s" % (nsStrippedType in self.qqDumpers))
|
|
dumper = self.qqDumpers.get(nsStrippedType, None)
|
|
if not dumper is None:
|
|
if tryDynamic:
|
|
dumper(self, self.expensiveDowncast(value))
|
|
else:
|
|
dumper(self, value)
|
|
return
|
|
|
|
# D arrays, gdc compiled.
|
|
if typeName.endswith("[]"):
|
|
n = value["length"]
|
|
base = value["ptr"]
|
|
self.putType(typeName)
|
|
self.putItemCount(n)
|
|
if self.isExpanded():
|
|
self.putArrayData(base.type.target(), base, n)
|
|
return
|
|
|
|
#warn("GENERIC STRUCT: %s" % typeobj)
|
|
#warn("INAME: %s " % self.currentIName)
|
|
#warn("INAMES: %s " % self.expandedINames)
|
|
#warn("EXPANDED: %s " % (self.currentIName in self.expandedINames))
|
|
staticMetaObject = self.extractStaticMetaObject(value.type)
|
|
if staticMetaObject:
|
|
self.putQObjectNameValue(value)
|
|
self.putType(typeName)
|
|
self.putEmptyValue()
|
|
self.putNumChild(len(typeobj.fields()))
|
|
|
|
if self.currentIName in self.expandedINames:
|
|
innerType = None
|
|
with Children(self, 1, childType=innerType):
|
|
self.putFields(value)
|
|
if staticMetaObject:
|
|
self.putQObjectGuts(value, staticMetaObject)
|
|
|
|
def toBlob(self, value):
|
|
size = toInteger(value.type.sizeof)
|
|
if value.address:
|
|
return self.extractBlob(value.address, size)
|
|
|
|
# No address. Possibly the result of an inferior call.
|
|
y = value.cast(gdb.lookup_type("unsigned char").array(0, int(size - 1)))
|
|
buf = bytearray(struct.pack('x' * size))
|
|
for i in range(size):
|
|
buf[i] = int(y[i])
|
|
|
|
return Blob(bytes(buf))
|
|
|
|
def extractBlob(self, base, size):
|
|
inferior = self.selectedInferior()
|
|
return Blob(inferior.read_memory(base, size))
|
|
|
|
def readCString(self, base):
|
|
inferior = self.selectedInferior()
|
|
mem = ""
|
|
while True:
|
|
char = inferior.read_memory(base, 1)[0]
|
|
if not char:
|
|
break
|
|
mem += char
|
|
base += 1
|
|
#if sys.version_info[0] >= 3:
|
|
# return mem.tobytes()
|
|
return mem
|
|
|
|
def putFields(self, value, dumpBase = True):
|
|
fields = value.type.fields()
|
|
|
|
#warn("TYPE: %s" % value.type)
|
|
#warn("FIELDS: %s" % fields)
|
|
baseNumber = 0
|
|
for field in fields:
|
|
#warn("FIELD: %s" % field)
|
|
#warn(" BITSIZE: %s" % field.bitsize)
|
|
#warn(" ARTIFICIAL: %s" % field.artificial)
|
|
|
|
# Since GDB commit b5b08fb4 anonymous structs get also reported
|
|
# with a 'None' name.
|
|
if field.name is None:
|
|
if value.type.code == ArrayCode:
|
|
# An array.
|
|
typeobj = stripTypedefs(value.type)
|
|
innerType = typeobj.target()
|
|
p = value.cast(innerType.pointer())
|
|
for i in xrange(int(typeobj.sizeof / innerType.sizeof)):
|
|
with SubItem(self, i):
|
|
self.putItem(p.dereference())
|
|
p = p + 1
|
|
else:
|
|
# Something without a name.
|
|
self.anonNumber += 1
|
|
with SubItem(self, str(self.anonNumber)):
|
|
self.putItem(value[field])
|
|
continue
|
|
|
|
# Ignore vtable pointers for virtual inheritance.
|
|
if field.name.startswith("_vptr."):
|
|
with SubItem(self, "[vptr]"):
|
|
# int (**)(void)
|
|
n = 100
|
|
self.putType(" ")
|
|
self.putValue(value[field.name])
|
|
self.putNumChild(n)
|
|
if self.isExpanded():
|
|
with Children(self):
|
|
p = value[field.name]
|
|
for i in xrange(n):
|
|
if toInteger(p.dereference()) != 0:
|
|
with SubItem(self, i):
|
|
self.putItem(p.dereference())
|
|
self.putType(" ")
|
|
p = p + 1
|
|
continue
|
|
|
|
#warn("FIELD NAME: %s" % field.name)
|
|
#warn("FIELD TYPE: %s" % field.type)
|
|
if field.is_base_class:
|
|
# Field is base type. We cannot use field.name as part
|
|
# of the iname as it might contain spaces and other
|
|
# strange characters.
|
|
if dumpBase:
|
|
baseNumber += 1
|
|
with UnnamedSubItem(self, "@%d" % baseNumber):
|
|
baseValue = value.cast(field.type)
|
|
self.putBaseClassName(field.name)
|
|
self.putAddress(baseValue.address)
|
|
self.putItem(baseValue, False)
|
|
elif len(field.name) == 0:
|
|
# Anonymous union. We need a dummy name to distinguish
|
|
# multiple anonymous unions in the struct.
|
|
self.anonNumber += 1
|
|
self.listAnonymous(value, "#%d" % self.anonNumber,
|
|
field.type)
|
|
else:
|
|
# Named field.
|
|
with SubItem(self, field.name):
|
|
#bitsize = getattr(field, "bitsize", None)
|
|
#if not bitsize is None:
|
|
# self.put("bitsize=\"%s\"" % bitsize)
|
|
self.putItem(self.downcast(value[field.name]))
|
|
|
|
def putBaseClassName(self, name):
|
|
self.put('iname="%s",' % self.currentIName)
|
|
self.put('name="[%s]",' % name)
|
|
|
|
def listAnonymous(self, value, name, typeobj):
|
|
for field in typeobj.fields():
|
|
#warn("FIELD NAME: %s" % field.name)
|
|
if field.name:
|
|
with SubItem(self, field.name):
|
|
self.putItem(value[field.name])
|
|
else:
|
|
# Further nested.
|
|
self.anonNumber += 1
|
|
name = "#%d" % self.anonNumber
|
|
#iname = "%s.%s" % (selitem.iname, name)
|
|
#child = SameItem(item.value, iname)
|
|
with SubItem(self, name):
|
|
self.put('name="%s",' % name)
|
|
self.putEmptyValue()
|
|
fieldTypeName = str(field.type)
|
|
if fieldTypeName.endswith("<anonymous union>"):
|
|
self.putType("<anonymous union>")
|
|
elif fieldTypeName.endswith("<anonymous struct>"):
|
|
self.putType("<anonymous struct>")
|
|
else:
|
|
self.putType(fieldTypeName)
|
|
with Children(self, 1):
|
|
self.listAnonymous(value, name, field.type)
|
|
|
|
#def threadname(self, maximalStackDepth, objectPrivateType):
|
|
# e = gdb.selected_frame()
|
|
# out = ""
|
|
# ns = self.qtNamespace()
|
|
# while True:
|
|
# maximalStackDepth -= 1
|
|
# if maximalStackDepth < 0:
|
|
# break
|
|
# e = e.older()
|
|
# if e == None or e.name() == None:
|
|
# break
|
|
# if e.name() == ns + "QThreadPrivate::start" \
|
|
# or e.name() == "_ZN14QThreadPrivate5startEPv@4":
|
|
# try:
|
|
# thrptr = e.read_var("thr").dereference()
|
|
# d_ptr = thrptr["d_ptr"]["d"].cast(objectPrivateType).dereference()
|
|
# try:
|
|
# objectName = d_ptr["objectName"]
|
|
# except: # Qt 5
|
|
# p = d_ptr["extraData"]
|
|
# if not self.isNull(p):
|
|
# objectName = p.dereference()["objectName"]
|
|
# if not objectName is None:
|
|
# data, size, alloc = self.stringData(objectName)
|
|
# if size > 0:
|
|
# s = self.readMemory(data, 2 * size)
|
|
#
|
|
# thread = gdb.selected_thread()
|
|
# inner = '{valueencoded="';
|
|
# inner += str(Hex4EncodedLittleEndianWithoutQuotes)+'",id="'
|
|
# inner += str(thread.num) + '",value="'
|
|
# inner += s
|
|
# #inner += self.encodeString(objectName)
|
|
# inner += '"},'
|
|
#
|
|
# out += inner
|
|
# except:
|
|
# pass
|
|
# return out
|
|
|
|
def threadnames(self, maximalStackDepth):
|
|
# FIXME: This needs a proper implementation for MinGW, and only there.
|
|
# Linux, Mac and QNX mirror the objectName() to the underlying threads,
|
|
# so we get the names already as part of the -thread-info output.
|
|
return '[]'
|
|
#out = '['
|
|
#oldthread = gdb.selected_thread()
|
|
#if oldthread:
|
|
# try:
|
|
# objectPrivateType = gdb.lookup_type(ns + "QObjectPrivate").pointer()
|
|
# inferior = self.selectedInferior()
|
|
# for thread in inferior.threads():
|
|
# thread.switch()
|
|
# out += self.threadname(maximalStackDepth, objectPrivateType)
|
|
# except:
|
|
# pass
|
|
# oldthread.switch()
|
|
#return out + ']'
|
|
|
|
|
|
def importPlainDumper(self, printer):
|
|
name = printer.name.replace("::", "__")
|
|
self.qqDumpers[name] = PlainDumper(printer)
|
|
self.qqFormats[name] = ""
|
|
|
|
def importPlainDumpers(self):
|
|
for obj in gdb.objfiles():
|
|
for printers in obj.pretty_printers + gdb.pretty_printers:
|
|
for printer in printers.subprinters:
|
|
self.importPlainDumper(printer)
|
|
|
|
def qtNamespace(self):
|
|
if not self.currentQtNamespaceGuess is None:
|
|
return self.currentQtNamespaceGuess
|
|
|
|
# This only works when called from a valid frame.
|
|
try:
|
|
cand = "QArrayData::shared_null"
|
|
symbol = gdb.lookup_symbol(cand)[0]
|
|
if symbol:
|
|
ns = symbol.name[:-len(cand)]
|
|
self.qtNamespaceToReport = ns
|
|
self.qtNamespace = lambda: ns
|
|
return ns
|
|
except:
|
|
pass
|
|
|
|
try:
|
|
# This is Qt, but not 5.x.
|
|
cand = "QByteArray::shared_null"
|
|
symbol = gdb.lookup_symbol(cand)[0]
|
|
if symbol:
|
|
ns = symbol.name[:-len(cand)]
|
|
self.qtNamespaceToReport = ns
|
|
self.qtNamespace = lambda: ns
|
|
self.fallbackQtVersion = 0x40800
|
|
return ns
|
|
except:
|
|
pass
|
|
|
|
try:
|
|
# Last fall backs.
|
|
s = gdb.execute("ptype QByteArray", to_string=True)
|
|
if s.find("QMemArray") >= 0:
|
|
# Qt 3.
|
|
self.qtNamespaceToReport = ""
|
|
self.qtNamespace = lambda: ""
|
|
self.qtVersion = lambda: 0x30308
|
|
self.fallbackQtVersion = 0x30308
|
|
return ""
|
|
# Seemingly needed with Debian's GDB 7.4.1
|
|
ns = s[s.find("class")+6:s.find("QByteArray")]
|
|
if len(ns):
|
|
self.qtNamespaceToReport = ns
|
|
self.qtNamespace = lambda: ns
|
|
return ns
|
|
except:
|
|
pass
|
|
self.currentQtNamespaceGuess = ""
|
|
return ""
|
|
|
|
def bbedit(self, args):
|
|
(typeName, expr, data) = args.split(',')
|
|
typeName = self.hexdecode(typeName)
|
|
ns = self.qtNamespace()
|
|
if typeName.startswith(ns):
|
|
typeName = typeName[len(ns):]
|
|
typeName = typeName.replace("::", "__")
|
|
pos = typeName.find('<')
|
|
if pos != -1:
|
|
typeName = typeName[0:pos]
|
|
expr = self.hexdecode(expr)
|
|
data = self.hexdecode(data)
|
|
if typeName in self.qqEditable:
|
|
#self.qqEditable[typeName](self, expr, data)
|
|
value = gdb.parse_and_eval(expr)
|
|
self.qqEditable[typeName](self, value, data)
|
|
else:
|
|
cmd = "set variable (%s)=%s" % (expr, data)
|
|
gdb.execute(cmd)
|
|
|
|
def hasVTable(self, typeobj):
|
|
fields = typeobj.fields()
|
|
if len(fields) == 0:
|
|
return False
|
|
if fields[0].is_base_class:
|
|
return hasVTable(fields[0].type)
|
|
return str(fields[0].type) == "int (**)(void)"
|
|
|
|
def dynamicTypeName(self, value):
|
|
if self.hasVTable(value.type):
|
|
#vtbl = str(gdb.parse_and_eval("{int(*)(int)}%s" % int(value.address)))
|
|
try:
|
|
# Fails on 7.1 due to the missing to_string.
|
|
vtbl = gdb.execute("info symbol {int*}%s" % int(value.address),
|
|
to_string = True)
|
|
pos1 = vtbl.find("vtable ")
|
|
if pos1 != -1:
|
|
pos1 += 11
|
|
pos2 = vtbl.find(" +", pos1)
|
|
if pos2 != -1:
|
|
return vtbl[pos1 : pos2]
|
|
except:
|
|
pass
|
|
return str(value.type)
|
|
|
|
def downcast(self, value):
|
|
try:
|
|
return value.cast(value.dynamic_type)
|
|
except:
|
|
pass
|
|
#try:
|
|
# return value.cast(self.lookupType(self.dynamicTypeName(value)))
|
|
#except:
|
|
# pass
|
|
return value
|
|
|
|
def expensiveDowncast(self, value):
|
|
try:
|
|
return value.cast(value.dynamic_type)
|
|
except:
|
|
pass
|
|
try:
|
|
return value.cast(self.lookupType(self.dynamicTypeName(value)))
|
|
except:
|
|
pass
|
|
return value
|
|
|
|
def addToCache(self, typeobj):
|
|
typename = str(typeobj)
|
|
if typename in self.typesReported:
|
|
return
|
|
self.typesReported[typename] = True
|
|
self.typesToReport[typename] = typeobj
|
|
|
|
def enumExpression(self, enumType, enumValue):
|
|
return self.qtNamespace() + "Qt::" + enumValue
|
|
|
|
def lookupType(self, typestring):
|
|
typeobj = self.typeCache.get(typestring)
|
|
#warn("LOOKUP 1: %s -> %s" % (typestring, typeobj))
|
|
if not typeobj is None:
|
|
return typeobj
|
|
|
|
if typestring == "void":
|
|
typeobj = gdb.lookup_type(typestring)
|
|
self.typeCache[typestring] = typeobj
|
|
self.typesToReport[typestring] = typeobj
|
|
return typeobj
|
|
|
|
#try:
|
|
# typeobj = gdb.parse_and_eval("{%s}&main" % typestring).typeobj
|
|
# if not typeobj is None:
|
|
# self.typeCache[typestring] = typeobj
|
|
# self.typesToReport[typestring] = typeobj
|
|
# return typeobj
|
|
#except:
|
|
# pass
|
|
|
|
# See http://sourceware.org/bugzilla/show_bug.cgi?id=13269
|
|
# gcc produces "{anonymous}", gdb "(anonymous namespace)"
|
|
# "<unnamed>" has been seen too. The only thing gdb
|
|
# understands when reading things back is "(anonymous namespace)"
|
|
if typestring.find("{anonymous}") != -1:
|
|
ts = typestring
|
|
ts = ts.replace("{anonymous}", "(anonymous namespace)")
|
|
typeobj = self.lookupType(ts)
|
|
if not typeobj is None:
|
|
self.typeCache[typestring] = typeobj
|
|
self.typesToReport[typestring] = typeobj
|
|
return typeobj
|
|
|
|
#warn(" RESULT FOR 7.2: '%s': %s" % (typestring, typeobj))
|
|
|
|
# This part should only trigger for
|
|
# gdb 7.1 for types with namespace separators.
|
|
# And anonymous namespaces.
|
|
|
|
ts = typestring
|
|
while True:
|
|
#warn("TS: '%s'" % ts)
|
|
if ts.startswith("class "):
|
|
ts = ts[6:]
|
|
elif ts.startswith("struct "):
|
|
ts = ts[7:]
|
|
elif ts.startswith("const "):
|
|
ts = ts[6:]
|
|
elif ts.startswith("volatile "):
|
|
ts = ts[9:]
|
|
elif ts.startswith("enum "):
|
|
ts = ts[5:]
|
|
elif ts.endswith(" const"):
|
|
ts = ts[:-6]
|
|
elif ts.endswith(" volatile"):
|
|
ts = ts[:-9]
|
|
elif ts.endswith("*const"):
|
|
ts = ts[:-5]
|
|
elif ts.endswith("*volatile"):
|
|
ts = ts[:-8]
|
|
else:
|
|
break
|
|
|
|
if ts.endswith('*'):
|
|
typeobj = self.lookupType(ts[0:-1])
|
|
if not typeobj is None:
|
|
typeobj = typeobj.pointer()
|
|
self.typeCache[typestring] = typeobj
|
|
self.typesToReport[typestring] = typeobj
|
|
return typeobj
|
|
|
|
try:
|
|
#warn("LOOKING UP '%s'" % ts)
|
|
typeobj = gdb.lookup_type(ts)
|
|
except RuntimeError as error:
|
|
#warn("LOOKING UP '%s': %s" % (ts, error))
|
|
# See http://sourceware.org/bugzilla/show_bug.cgi?id=11912
|
|
exp = "(class '%s'*)0" % ts
|
|
try:
|
|
typeobj = self.parseAndEvaluate(exp).type.target()
|
|
except:
|
|
# Can throw "RuntimeError: No type named class Foo."
|
|
pass
|
|
except:
|
|
#warn("LOOKING UP '%s' FAILED" % ts)
|
|
pass
|
|
|
|
if not typeobj is None:
|
|
self.typeCache[typestring] = typeobj
|
|
self.typesToReport[typestring] = typeobj
|
|
return typeobj
|
|
|
|
# This could still be None as gdb.lookup_type("char[3]") generates
|
|
# "RuntimeError: No type named char[3]"
|
|
self.typeCache[typestring] = typeobj
|
|
self.typesToReport[typestring] = typeobj
|
|
return typeobj
|
|
|
|
def stackListFrames(self, n, options):
|
|
self.prepare("options:" + options + ",pe")
|
|
self.output = []
|
|
|
|
frame = gdb.newest_frame()
|
|
i = 0
|
|
self.currentCallContext = None
|
|
while i < n and frame:
|
|
with OutputSafer(self):
|
|
name = frame.name()
|
|
functionName = "??" if name is None else name
|
|
fileName = ""
|
|
objfile = ""
|
|
fullName = ""
|
|
pc = frame.pc()
|
|
sal = frame.find_sal()
|
|
line = -1
|
|
if sal:
|
|
line = sal.line
|
|
symtab = sal.symtab
|
|
if not symtab is None:
|
|
objfile = symtab.objfile.filename
|
|
fileName = symtab.filename
|
|
fullName = symtab.fullname()
|
|
|
|
if self.nativeMixed:
|
|
if self.isReportableQmlFrame(functionName):
|
|
engine = frame.read_var("engine")
|
|
h = self.extractQmlLocation(engine)
|
|
self.put(('frame={level="%s",func="%s",file="%s",'
|
|
'fullname="%s",line="%s",language="js",addr="0x%x"}')
|
|
% (i, h['functionName'], h['fileName'], h['fileName'],
|
|
h['lineNumber'], h['context']))
|
|
|
|
i += 1
|
|
frame = frame.older()
|
|
continue
|
|
|
|
if self.isInternalQmlFrame(functionName):
|
|
frame = frame.older()
|
|
self.put(('frame={level="%s",addr="0x%x",func="%s",'
|
|
'file="%s",fullname="%s",line="%s",'
|
|
'from="%s",language="c",usable="0"}') %
|
|
(i, pc, functionName, fileName, fullName, line, objfile))
|
|
i += 1
|
|
frame = frame.older()
|
|
continue
|
|
|
|
self.put(('frame={level="%s",addr="0x%x",func="%s",'
|
|
'file="%s",fullname="%s",line="%s",'
|
|
'from="%s",language="c"}') %
|
|
(i, pc, functionName, fileName, fullName, line, objfile))
|
|
|
|
frame = frame.older()
|
|
i += 1
|
|
|
|
return ''.join(self.output)
|
|
|
|
def createResolvePendingBreakpointsHookBreakpoint(self, args):
|
|
class Resolver(gdb.Breakpoint):
|
|
def __init__(self, dumper, args):
|
|
self.dumper = dumper
|
|
self.args = args
|
|
spec = "qt_v4ResolvePendingBreakpointsHook"
|
|
print("Preparing hook to resolve pending QML breakpoint at %s" % args)
|
|
super(Resolver, self).\
|
|
__init__(spec, gdb.BP_BREAKPOINT, internal=True, temporary=False)
|
|
|
|
def stop(self):
|
|
bp = self.dumper.doInsertQmlBreakpoint(args)
|
|
print("Resolving QML breakpoint %s -> %s" % (args, bp))
|
|
self.enabled = False
|
|
return False
|
|
|
|
self.qmlBreakpoints.append(Resolver(self, args))
|
|
|
|
|
|
|
|
class CliDumper(Dumper):
|
|
def __init__(self):
|
|
Dumper.__init__(self)
|
|
self.childrenPrefix = '['
|
|
self.chidrenSuffix = '] '
|
|
self.indent = 0
|
|
self.isCli = True
|
|
|
|
def reportDumpers(self):
|
|
return ""
|
|
|
|
def enterSubItem(self, item):
|
|
if not item.iname:
|
|
item.iname = "%s.%s" % (self.currentIName, item.name)
|
|
self.indent += 1
|
|
self.putNewline()
|
|
if isinstance(item.name, str):
|
|
self.output += item.name + ' = '
|
|
item.savedIName = self.currentIName
|
|
item.savedValue = self.currentValue
|
|
item.savedType = self.currentType
|
|
item.savedCurrentAddress = self.currentAddress
|
|
self.currentIName = item.iname
|
|
self.currentValue = ReportItem();
|
|
self.currentType = ReportItem();
|
|
self.currentAddress = None
|
|
|
|
def exitSubItem(self, item, exType, exValue, exTraceBack):
|
|
self.indent -= 1
|
|
#warn("CURRENT VALUE: %s: %s %s" %
|
|
# (self.currentIName, self.currentValue, self.currentType))
|
|
if not exType is None:
|
|
if self.passExceptions:
|
|
showException("SUBITEM", exType, exValue, exTraceBack)
|
|
self.putNumChild(0)
|
|
self.putValue("<not accessible>")
|
|
try:
|
|
if self.currentType.value:
|
|
typeName = self.stripClassTag(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 is Hex2EncodedLatin1:
|
|
value = self.hexdecode(value)
|
|
elif self.currentValue.encoding is Hex2EncodedUtf8:
|
|
value = self.hexdecode(value)
|
|
elif self.currentValue.encoding is Hex4EncodedLittleEndian:
|
|
b = bytes.fromhex(value)
|
|
value = codecs.decode(b, 'utf-16')
|
|
self.put('"%s"' % value)
|
|
if self.currentValue.elided:
|
|
self.put('...')
|
|
|
|
if self.currentType.value:
|
|
self.put('}')
|
|
except:
|
|
pass
|
|
if not self.currentAddress is None:
|
|
self.put(self.currentAddress)
|
|
self.currentIName = item.savedIName
|
|
self.currentValue = item.savedValue
|
|
self.currentType = item.savedType
|
|
self.currentAddress = item.savedCurrentAddress
|
|
return True
|
|
|
|
def putNewline(self):
|
|
self.output += '\n' + ' ' * self.indent
|
|
|
|
def put(self, line):
|
|
if self.output.endswith('\n'):
|
|
self.output = self.output[0:-1]
|
|
self.output += line
|
|
|
|
def putNumChild(self, numchild):
|
|
pass
|
|
|
|
def putBaseClassName(self, name):
|
|
pass
|
|
|
|
def putOriginalAddress(self, value):
|
|
pass
|
|
|
|
def putAddressRange(self, base, step):
|
|
return True
|
|
|
|
def run(self, args):
|
|
arglist = args.split(' ')
|
|
name = ''
|
|
if len(arglist) >= 1:
|
|
name = arglist[0]
|
|
allexpanded = [name]
|
|
if len(arglist) >= 2:
|
|
for sub in arglist[1].split(','):
|
|
allexpanded.append(name + '.' + sub)
|
|
self.prepare("options:fancy,pe,autoderef expanded:" + ','.join(allexpanded))
|
|
self.output = name + ' = '
|
|
frame = gdb.selected_frame()
|
|
value = frame.read_var(name)
|
|
with TopLevelItem(self, name):
|
|
self.putItem(value)
|
|
return self.output
|
|
|
|
def pp(args):
|
|
return theDumper.run(args)
|
|
|
|
registerCommand("pp", pp)
|
|
|
|
|
|
# Global instance.
|
|
if gdb.parameter('height') is None:
|
|
theDumper = Dumper()
|
|
else:
|
|
import codecs
|
|
theDumper = CliDumper()
|
|
|
|
#######################################################################
|
|
#
|
|
# Internal profiling
|
|
#
|
|
#######################################################################
|
|
|
|
def p1(args):
|
|
import tempfile
|
|
import cProfile
|
|
tempDir = tempfile.gettempdir() + "/bbprof"
|
|
cProfile.run('bb("%s")' % args, tempDir)
|
|
import pstats
|
|
pstats.Stats(tempDir).sort_stats('time').print_stats()
|
|
return ""
|
|
|
|
registerCommand("p1", p1)
|
|
|
|
def p2(args):
|
|
import timeit
|
|
return timeit.repeat('bb("%s")' % args,
|
|
'from __main__ import bb', number=10)
|
|
|
|
registerCommand("p2", p2)
|
|
|
|
def p3(args):
|
|
eval(args)
|
|
|
|
def p3(args):
|
|
import timeit
|
|
return timeit.repeat('p3("%s")' % args, 'from __main__ import p3', number=10000)
|
|
|
|
registerCommand("p3", p3)
|
|
|
|
#######################################################################
|
|
#
|
|
# ThreadNames Command
|
|
#
|
|
#######################################################################
|
|
|
|
def threadnames(arg):
|
|
return theDumper.threadnames(int(arg))
|
|
|
|
registerCommand("threadnames", threadnames)
|
|
|
|
#######################################################################
|
|
#
|
|
# Reload Command
|
|
#
|
|
#######################################################################
|
|
|
|
def reloadDumper(_):
|
|
theDumper.reloadDumper();
|
|
|
|
registerCommand("reload", reloadDumper)
|
|
|
|
#######################################################################
|
|
#
|
|
# StackFrames Command
|
|
#
|
|
#######################################################################
|
|
|
|
def stackListFrames(arg):
|
|
try:
|
|
args = arg.split(' ')
|
|
limit = int(args[0]) if len(args) > 0 else 10000
|
|
if limit <= 0:
|
|
limit = 10000
|
|
options = args[1] if len(args) > 1 else ""
|
|
return theDumper.stackListFrames(limit, options)
|
|
except:
|
|
import traceback
|
|
traceback.print_exc()
|
|
|
|
registerCommand("stackListFrames", stackListFrames)
|
|
|
|
#######################################################################
|
|
#
|
|
# AddExtraDumpers Command
|
|
#
|
|
#######################################################################
|
|
|
|
def addExtraDumper(args):
|
|
theDumper.addDumperModule(args)
|
|
|
|
registerCommand("addExtraDumper", addExtraDumper)
|
|
|
|
def exitGdb(arg):
|
|
if hasPlot:
|
|
matplotQuit()
|
|
gdb.execute("quit")
|
|
return ""
|
|
|
|
registerCommand("exitGdb", exitGdb)
|
|
|
|
#######################################################################
|
|
#
|
|
# Native Mixed
|
|
#
|
|
#######################################################################
|
|
|
|
#class QmlEngineCreationTracker(gdb.Breakpoint):
|
|
# def __init__(self):
|
|
# spec = "QQmlEnginePrivate::init"
|
|
# super(QmlEngineCreationTracker, self).\
|
|
# __init__(spec, gdb.BP_BREAKPOINT, internal=True)
|
|
#
|
|
# def stop(self):
|
|
# engine = gdb.parse_and_eval("q_ptr")
|
|
# print("QML engine created: %s" % engine)
|
|
# theDumper.qmlEngines.append(engine)
|
|
# return False
|
|
#
|
|
#QmlEngineCreationTracker()
|
|
|
|
class TriggeredBreakpointHookBreakpoint(gdb.Breakpoint):
|
|
def __init__(self):
|
|
spec = "qt_v4TriggeredBreakpointHook"
|
|
super(TriggeredBreakpointHookBreakpoint, self).\
|
|
__init__(spec, gdb.BP_BREAKPOINT, internal=True)
|
|
|
|
def stop(self):
|
|
print("QML engine stopped.")
|
|
return True
|
|
|
|
TriggeredBreakpointHookBreakpoint()
|
|
|