From b62686b24fbb65d0810475e24aba7a5c4ee3e05e Mon Sep 17 00:00:00 2001
From: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Date: Mon, 1 Jul 2019 18:37:54 +0200
Subject: Minimal prototype of integrated assembler.

The labels are parsed and stored into symbol table
but expressions dependent on symbols values are not evaluated.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
---
 qtmips_gui/MainWindow.ui    | 15 ++++++++++++
 qtmips_gui/mainwindow.cpp   | 57 +++++++++++++++++++++++++++++++++++++++++++++
 qtmips_gui/mainwindow.h     |  2 +-
 qtmips_gui/programmodel.cpp |  3 +++
 4 files changed, 76 insertions(+), 1 deletion(-)

(limited to 'qtmips_gui')

diff --git a/qtmips_gui/MainWindow.ui b/qtmips_gui/MainWindow.ui
index 3202726..92fa695 100644
--- a/qtmips_gui/MainWindow.ui
+++ b/qtmips_gui/MainWindow.ui
@@ -101,6 +101,7 @@
     <addaction name="separator"/>
     <addaction name="actionRestart"/>
     <addaction name="actionShow_Symbol"/>
+    <addaction name="actionCompileSource"/>
    </widget>
    <widget class="QMenu" name="menuHelp">
     <property name="title">
@@ -239,6 +240,20 @@
     <string>Ctrl+C</string>
    </property>
   </action>
+  <action name="actionCompileSource">
+   <property name="enabled">
+    <bool>false</bool>
+   </property>
+   <property name="text">
+    <string>Compile Source</string>
+   </property>
+   <property name="toolTip">
+    <string>Compile source and update memory</string>
+   </property>
+   <property name="shortcut">
+    <string>Ctrl+C</string>
+   </property>
+  </action>
   <action name="actionExit">
    <property name="icon">
     <iconset resource="icons.qrc">
diff --git a/qtmips_gui/mainwindow.cpp b/qtmips_gui/mainwindow.cpp
index 241a623..8a7956f 100644
--- a/qtmips_gui/mainwindow.cpp
+++ b/qtmips_gui/mainwindow.cpp
@@ -41,6 +41,8 @@
 #include <QFile>
 #include <QFileInfo>
 #include <QMessageBox>
+#include <QTextDocument>
+#include <iostream>
 
 #include "mainwindow.h"
 #include "aboutdialog.h"
@@ -107,6 +109,7 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) {
     connect(ui->actionSave, SIGNAL(triggered(bool)), this, SLOT(save_source()));
     connect(ui->actionSaveAs, SIGNAL(triggered(bool)), this, SLOT(save_source_as()));
     connect(ui->actionClose, SIGNAL(triggered(bool)), this, SLOT(close_source()));
+    connect(ui->actionCompileSource, SIGNAL(triggered(bool)), this, SLOT(compile_source()));
     connect(ui->actionShow_Symbol, SIGNAL(triggered(bool)), this, SLOT(show_symbol_dialog()));
     connect(ui->actionRegisters, SIGNAL(triggered(bool)), this, SLOT(show_registers()));
     connect(ui->actionProgram_memory, SIGNAL(triggered(bool)), this, SLOT(show_program()));
@@ -458,10 +461,12 @@ void MainWindow::setCurrentSrcEditor(SrcEditor *srceditor) {
         ui->actionSave->setEnabled(false);
         ui->actionSaveAs->setEnabled(false);
         ui->actionClose->setEnabled(false);
+        ui->actionCompileSource->setEnabled(false);
     } else {
         ui->actionSave->setEnabled(true);
         ui->actionSaveAs->setEnabled(true);
         ui->actionClose->setEnabled(true);
+        ui->actionCompileSource->setEnabled(true);
     }
 }
 
@@ -540,3 +545,55 @@ void MainWindow::close_source() {
         central_window->removeTab(idx);
     delete editor;
 }
+
+void MainWindow::compile_source() {
+    if (current_srceditor == nullptr)
+        return;
+    if (machine == nullptr) {
+        QMessageBox::critical(this, "QtMips Error", tr("No machine to store program."));
+        return;
+    }
+    machine::MemoryAccess *mem = machine->physical_address_space_rw();
+    if (mem == nullptr) {
+        QMessageBox::critical(this, "QtMips Error", tr("No physical addresspace to store program."));
+        return;
+    }
+    machine->cache_sync();
+    SrcEditor *editor = current_srceditor;
+    QTextDocument *doc = editor->document();
+    std::uint32_t address = 0x80020000;
+    machine::RelocExpressionList reloc;
+
+    int ln = 1;
+    bool ok;
+    for ( QTextBlock block = doc->begin(); block.isValid(); block = block.next(), ln++) {
+        int pos;
+        QString label = "";
+        QString line = block.text();
+        pos = line.indexOf("#");
+        if (pos >= 0)
+            line.truncate(pos);
+        pos = line.indexOf(";");
+        if (pos >= 0)
+            line.truncate(pos);
+        line = line.simplified();
+        pos = line.indexOf(":");
+        if (pos >= 0) {
+            label = line.mid(0, pos);
+            line = line.mid(pos + 1).trimmed();
+            machine->set_symbol(label, address, 4);
+        }
+        machine::Instruction inst;
+        inst = machine::Instruction::from_string(line, &ok, address, &reloc);
+        mem->write_word(address, inst.data());
+        address += 4;
+    }
+    foreach(machine::RelocExpression *r, reloc) {
+        QString e = r->expression;
+
+
+        delete r;
+    }
+
+    emit mem->external_change_notify(mem, 0, 0xffffffff, true);
+}
diff --git a/qtmips_gui/mainwindow.h b/qtmips_gui/mainwindow.h
index b051309..f75d31e 100644
--- a/qtmips_gui/mainwindow.h
+++ b/qtmips_gui/mainwindow.h
@@ -77,6 +77,7 @@ public slots:
     void save_source();
     void save_source_as();
     void close_source();
+    void compile_source();
     void show_registers();
     void show_program();
     void show_memory();
@@ -124,7 +125,6 @@ private:
     bool coreview_shown;
     SrcEditor  *current_srceditor;
 
-
     QActionGroup *speed_group;
 
     QSettings  *settings;
diff --git a/qtmips_gui/programmodel.cpp b/qtmips_gui/programmodel.cpp
index 9098ab1..64dffb8 100644
--- a/qtmips_gui/programmodel.cpp
+++ b/qtmips_gui/programmodel.cpp
@@ -176,6 +176,9 @@ void ProgramModel::setup(machine::QtMipsMachine *machine) {
         stage_addr[i] = machine::STAGEADDR_NONE;
     if (machine != nullptr)
         connect(machine, SIGNAL(post_tick()), this, SLOT(check_for_updates()));
+    if (mem_access() != nullptr)
+        connect(mem_access(), SIGNAL(external_change_notify(const MemoryAccess*,std::uint32_t,std::uint32_t,bool)),
+                this, SLOT(check_for_updates()));
     emit update_all();
 }
 
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