debugger: use gdb again to read executable file name from core

Change-Id: I035d1260c5cf08d4a65adb4494a5f83045effecf
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/debugger/gdb/coregdbadapter.cpp

@@ -88,13 +88,44 @@ void GdbCoreEngine::setupEngine()
     unpackCoreIfNeeded();
 }
 
+QString GdbCoreEngine::readExecutableNameFromCore(bool *isCore)
+{
+#if 0
+    ElfReader reader(coreFileName());
+    return QString::fromLocal8Bit(reader.readCoreName(isCore));
+#else
+    const DebuggerStartParameters &sp = startParameters();
+    QStringList args;
+    args.append(QLatin1String("-nx"));
+    args.append(QLatin1String("-batch"));
+    args.append(QLatin1String("-c"));
+    args.append(coreFileName());
+    QProcess proc;
+    proc.start(sp.debuggerCommand, args);
+    if (proc.waitForFinished()) {
+        QByteArray ba = proc.readAllStandardOutput();
+        // Core was generated by `/data/dev/creator-2.6/bin/qtcreator'.
+        // Program terminated with signal 11, Segmentation fault.
+        int pos1 = ba.indexOf("Core was generated by");
+        if (pos1 != -1) {
+            pos1 += 23;
+            int pos2 = ba.indexOf('\'', pos1);
+            if (pos2 != -1) {
+                *isCore = true;
+                return QString::fromLocal8Bit(ba.mid(pos1, pos2 - pos1));
+            }
+        }
+    }
+    return QString();
+#endif
+}
+
 void GdbCoreEngine::continueSetupEngine()
 {
     if (m_executable.isEmpty()) {
         // Read executable from core.
-        ElfReader reader(coreFileName());
         bool isCore = false;
-        m_executable = QString::fromLocal8Bit(reader.readCoreName(&isCore));
+        m_executable = readExecutableNameFromCore(&isCore);
 
         if (!isCore) {
             showMessageBox(QMessageBox::Warning,

src/plugins/debugger/gdb/coregdbadapter.h

@@ -68,6 +68,7 @@ private:
     void unpackCoreIfNeeded();
     QString coreFileName() const;
     Q_SLOT void continueSetupEngine();
+    QString readExecutableNameFromCore(bool *isCore);
     QString coreName() const;
 
     QString m_executable;