Debugger: Add support for none standard Qt builds

... to the python based cdb dumper.
Now supporting static, namespace and qt builds with a libinfix.

Change-Id: Ib6bcd00dba876adc7a56c23ec4f4280cd3208143
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

share/qtcreator/debugger/cdbbridge.py

@@ -27,6 +27,7 @@ import inspect
 import os
 import sys
 import cdbext
+import re
 
 sys.path.insert(1, os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe()))))
 
@@ -229,10 +230,18 @@ class Dumper(DumperBase):
 
     def qtCoreModuleName(self):
         modules = cdbext.listOfModules()
+        # first check for an exact module name match
         for coreName in ['Qt5Cored', 'Qt5Core', 'QtCored4', 'QtCore4']:
             if coreName in modules:
                 self.qtCoreModuleName = lambda: coreName
                 return coreName
+        # maybe we have a libinfix build.
+        for pattern in ['Qt5Core.*', 'QtCore.*']:
+            matches = [module for module in modules if re.match(pattern, module)]
+            if matches:
+                coreName = matches[0]
+                self.qtCoreModuleName = lambda: coreName
+                return coreName
         return None
 
     def qtDeclarativeModuleName(self):
@@ -241,13 +250,24 @@ class Dumper(DumperBase):
             if declarativeModuleName in modules:
                 self.qtDeclarativeModuleName = lambda: declarativeModuleName
                 return declarativeModuleName
+        matches = [module for module in modules if re.match('Qt5Qml.*', module)]
+        if matches:
+            declarativeModuleName = matches[0]
+            self.qtDeclarativeModuleName = lambda: declarativeModuleName
+            return declarativeModuleName
         return None
 
     def qtHookDataSymbolName(self):
         hookSymbolName = 'qtHookData'
         coreModuleName = self.qtCoreModuleName()
         if coreModuleName is not None:
-            hookSymbolName = '%s!%s' % (coreModuleName, hookSymbolName)
+            hookSymbolName = '%s!%s%s' % (coreModuleName, self.qtNamespace(), hookSymbolName)
+        else:
+            resolved = cdbext.resolveSymbol('*' + hookSymbolName)
+            if resolved:
+                hookSymbolName = resolved[0]
+            else:
+                hookSymbolName = '*%s' % hookSymbolName
         self.qtHookDataSymbolName = lambda: hookSymbolName
         return hookSymbolName
 
@@ -255,12 +275,29 @@ class Dumper(DumperBase):
         hookSymbolName = 'qtDeclarativeHookData'
         declarativeModuleName = self.qtDeclarativeModuleName()
         if declarativeModuleName is not None:
-            hookSymbolName = '%s!%s' % (declarativeModuleName, hookSymbolName)
+            hookSymbolName = '%s!%s%s' % (declarativeModuleName, self.qtNamespace(), hookSymbolName)
+        else:
+            resolved = cdbext.resolveSymbol('*' + hookSymbolName)
+            if resolved:
+                hookSymbolName = resolved[0]
+            else:
+                hookSymbolName = '*%s' % hookSymbolName
+
         self.qtDeclarativeHookDataSymbolName = lambda: hookSymbolName
         return hookSymbolName
 
     def qtNamespace(self):
+        qstrdupSymbolName = '*qstrdup'
+        coreModuleName = self.qtCoreModuleName()
+        if coreModuleName is not None:
+            qstrdupSymbolName = '%s!%s' % (coreModuleName, qstrdupSymbolName)
+        resolved = cdbext.resolveSymbol(qstrdupSymbolName)
+        if not resolved:
             return ''
+        name = resolved[0].split('!')[1]
+        namespace = name[:name.find(':') + 2] if '::' in name else ''
+        self.qtNamespace = lambda: namespace
+        return namespace
 
     def qtVersion(self):
         qtVersion = self.findValueByExpression('((void**)&%s)[2]' % self.qtHookDataSymbolName())

src/libs/qtcreatorcdbext/pycdbextmodule.cpp

@@ -97,6 +97,39 @@ static PyObject *cdbext_parseAndEvaluate(PyObject *, PyObject *args) // -> Value
     return Py_BuildValue("K", value.I64);
 }
 
+static PyObject *cdbext_resolveSymbol(PyObject *, PyObject *args) // -> Value
+{
+    enum { bufSize = 2048 };
+
+    char *pattern;
+    if (!PyArg_ParseTuple(args, "s", &pattern))
+        Py_RETURN_NONE;
+
+    CIDebugSymbols *symbols = ExtensionCommandContext::instance()->symbols();
+    auto rc = PyList_New(0);
+
+    ULONG64 handle = 0;
+    // E_NOINTERFACE means "no match". Apparently, it does not always
+    // set handle.
+    HRESULT hr = symbols->StartSymbolMatch(pattern, &handle);
+    if (hr == E_NOINTERFACE || FAILED(hr)) {
+        if (handle)
+            symbols->EndSymbolMatch(handle);
+        return rc;
+    }
+    char buf[bufSize];
+    ULONG64 offset;
+    while (true) {
+        hr = symbols->GetNextSymbolMatch(handle, buf, bufSize - 1, 0, &offset);
+        if (hr == E_NOINTERFACE)
+            break;
+        if (hr == S_OK)
+            PyList_Append(rc, Py_BuildValue("s", buf));
+    }
+    symbols->EndSymbolMatch(handle);
+    return rc;
+}
+
 static PyObject *cdbext_lookupType(PyObject *, PyObject *args) // -> Type
 {
     char *type;
@@ -290,6 +323,8 @@ static PyObject *cdbext_call(PyObject *, PyObject *args)
 static PyMethodDef cdbextMethods[] = {
     {"parseAndEvaluate",    cdbext_parseAndEvaluate,    METH_VARARGS,
      "Returns value of expression or None if the expression can not be resolved"},
+    {"resolveSymbol",       cdbext_resolveSymbol,       METH_VARARGS,
+     "Returns a list of symbol names matching the given pattern"},
     {"lookupType",          cdbext_lookupType,          METH_VARARGS,
      "Returns type object or None if the type can not be resolved"},
     {"listOfLocals",        cdbext_listOfLocals,        METH_VARARGS,