Many changes and improvements - not stable

CodeEditor - perfomance and debug line highlighting improved.
Debugger - pause action, determine of entry point, debugging programs
without debug information, improved locks mechanism.
FASM - debug ability added,  lst parsing improved.
Ability to choose assembler and linker added.
Many bugs fixed.

Images.qrc

@@ -19,5 +19,6 @@
         <file>images/stepinto.png</file>
         <file>images/stepover.png</file>
         <file>images/undo.png</file>
+        <file>images/debugPause.png</file>
     </qresource>
 </RCC>

SASM.pro

@@ -49,7 +49,8 @@ SOURCES += main.cpp\
     nasm.cpp \
     gas.cpp \
     common.cpp \
-    fasm.cpp
+    fasm.cpp \
+    signallocker.cpp
 
 HEADERS  += mainwindow.h \
     tab.h \
@@ -67,7 +68,8 @@ HEADERS  += mainwindow.h \
     nasm.h \
     gas.h \
     common.h \
-    fasm.h
+    fasm.h \
+    signallocker.h
 
 FORMS += settings.ui
 

assembler.h

@@ -74,7 +74,7 @@ class Assembler : public QObject //Abstract class
     bool x86;
     explicit Assembler(bool x86, QObject *parent = 0);
     virtual QString getAssemblerPath() = 0;
-    virtual quint64 getMainOffset(QFile &lst) = 0;
+    virtual quint64 getMainOffset(QFile &lst, QString entryLabel) = 0;
     virtual void parseLstFile(QFile &lst, QVector<Assembler::LineNum> &lines, bool ioIncIncluded, quint64 ioIncSize, quint64 offset) = 0;
     virtual void fillHighligherRules(QVector<Assembler::HighlightingRule> &highlightingRules,
                                      QList<QTextCharFormat *> &formats,

codeeditor.cpp

@@ -42,7 +42,8 @@
 
 CodeEditor::CodeEditor(QWidget *parent, bool withBeakpoints) :
     RuQPlainTextEdit(parent), debugImage(":/images/debugLine.png"),
-    breakpointImage(":/images/breakpoint.png")
+    breakpointImage(":/images/breakpoint.png"),
+    settings("SASM Project", "SASM")
 {
     hasBreakpoints = withBeakpoints;
     prevBlockCount = -1;
@@ -105,18 +106,13 @@ void CodeEditor::lineNumberAreaPaintEvent(QPaintEvent *event)
 {
     //paint on line number area
     QPainter painter(lineNumberArea);
-    QSettings settings("SASM Project", "SASM");
     painter.fillRect(event->rect(), settings.value("linenumberpanelcolor", palette().color(QPalette::Window)).value<QColor>());
 
     QTextBlock block = firstVisibleBlock();
     int blockNumber = block.blockNumber();
     int top = (int) blockBoundingGeometry(block).translated(contentOffset()).top();
     int bottom = top + (int) blockBoundingRect(block).height();
 
-    //set debugAreaWidth before drawing
-    debugAreaWidth = 3 + debugImage.width() + 1; //left margin + arrow width + right margin
-    updateLineNumberAreaWidth(0);
-
     while (block.isValid() && top <= event->rect().bottom()) {
         if (block.isVisible() && bottom >= event->rect().top()) {
             QString number = QString::number(blockNumber + 1);
@@ -213,7 +209,6 @@ QList<int> *CodeEditor::getBreakpoints()
 
 void CodeEditor::highlightCurrentLine()
 {
-    QSettings settings("SASM Project", "SASM");
     if (!debugMode) {
         if (settings.value("currentlinemode", true).toBool()) {
             QList<QTextEdit::ExtraSelection> extraSelections;
@@ -243,10 +238,9 @@ void CodeEditor::highlightDebugLine(int lineNumber)
     if (debugMode) {
         QList<QTextEdit::ExtraSelection> extraSelections;
 
-        if (!isReadOnly()) {
+        if (!isReadOnly() && lineNumber > 0) {
             QTextEdit::ExtraSelection selection;
 
-            QSettings settings("SASM Project", "SASM");
             QColor lineColor = settings.value("debuglinecolor", QColor(235, 200, 40)).value<QColor>();
 
             selection.format.setBackground(lineColor);
@@ -264,11 +258,16 @@ void CodeEditor::highlightDebugLine(int lineNumber)
 
 void CodeEditor::updateDebugLine(int number)
 {
+    //number > 0 => highlight line
+    //number == -1 => exit from debug mode
+    //number == -2 => does not highlight any line, but does not exit from debug mode
+    //last case for waiting program stops on next instruction or breakpoint
     if (number == -1)
         setDebugMode(false);
     else
         setDebugMode(true);
-    currentDebugLine = number;
+    if (number != -2)
+        currentDebugLine = number;
 
     //create rectangle of line number area and highlight debug line throw updateRequest()
     QRect lineNumberAreaRect(lineNumberArea->x(), lineNumberArea->y(),

codeeditor.h

@@ -99,6 +99,7 @@ private slots:
     int firstTopMargin;
     bool hasBreakpoints;
     int prevBlockCount;
+    QSettings settings;
 
 signals:
     void breakpointsChanged(quint64 lineNumber, bool isAdded);