From 48c0b3ffcaef15aeac7b239e769bcc795b943bec Mon Sep 17 00:00:00 2001
From: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Date: Thu, 7 Feb 2019 19:20:52 +0100
Subject: Implemented simple indication of presence of memory location in the
 cache.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
---
 qtmips_gui/memorydock.cpp | 15 +++++++++++++--
 qtmips_gui/memoryview.cpp | 13 ++++++++++++-
 qtmips_gui/memoryview.h   |  2 ++
 3 files changed, 27 insertions(+), 3 deletions(-)

(limited to 'qtmips_gui')

diff --git a/qtmips_gui/memorydock.cpp b/qtmips_gui/memorydock.cpp
index 7feae4e..86f8f26 100644
--- a/qtmips_gui/memorydock.cpp
+++ b/qtmips_gui/memorydock.cpp
@@ -54,8 +54,19 @@ QList<QWidget*> DataView::row_widget(std::uint32_t address, QWidget *parent) {
     l = new QLabel(parent);
     l->setTextInteractionFlags(Qt::TextSelectableByMouse);
     l->setFont(f);
-    if (memory != nullptr)
-        l->setText(QString("0x") + QString("%1").arg(memory->read_word(address), 8, 16, QChar('0')).toUpper());
+    if (memory != nullptr) {
+        machine::LocationStatus loc_stat = machine::LOCSTAT_NONE;
+        QString val;
+        val = QString("0x") + QString("%1").arg(memory->read_word(address), 8, 16, QChar('0')).toUpper();
+        if (cache_data != nullptr) {
+            loc_stat = cache_data->location_status(address);
+            if (loc_stat & machine::LOCSTAT_DIRTY)
+                val += " D";
+            else if (loc_stat & machine::LOCSTAT_CACHED)
+                val += " C";
+        }
+        l->setText(val);
+    }
     widgs.append(l);
 
     return widgs;
diff --git a/qtmips_gui/memoryview.cpp b/qtmips_gui/memoryview.cpp
index 0457633..c4d022a 100644
--- a/qtmips_gui/memoryview.cpp
+++ b/qtmips_gui/memoryview.cpp
@@ -48,6 +48,7 @@ MemoryView::MemoryView(QWidget *parent, std::uint32_t addr0) : QWidget(parent) {
     memory = nullptr;
     addr_0 = addr0;
     change_counter = 0;
+    cache_data_change_counter = 0;
 
     layout = new QVBoxLayout(this);
 
@@ -67,6 +68,7 @@ MemoryView::MemoryView(QWidget *parent, std::uint32_t addr0) : QWidget(parent) {
 
 void MemoryView::setup(machine::QtMipsMachine *machine) {
     memory = (machine == nullptr) ? nullptr : machine->memory();
+    cache_data = (machine == nullptr) ? nullptr : machine->cache_data();
     if (machine != nullptr)
         connect(machine, SIGNAL(post_tick()), this, SLOT(check_for_updates()));
     reload_content();
@@ -97,10 +99,17 @@ void MemoryView::edit_load_focus() {
 }
 
 void MemoryView::check_for_updates() {
+    bool need_update = false;
     if (memory != nullptr) {
          if (change_counter != memory->get_change_counter())
-             reload_content();
+             need_update = true;
     }
+    if (cache_data != nullptr) {
+         if (cache_data_change_counter != cache_data->get_change_counter())
+             need_update = true;
+    }
+    if (need_update)
+        reload_content();
 }
 
 void MemoryView::reload_content() {
@@ -108,6 +117,8 @@ void MemoryView::reload_content() {
     memf->widg->clearRows();
     if (memory != nullptr)
         change_counter = memory->get_change_counter();
+    if (cache_data != nullptr)
+        cache_data_change_counter = cache_data->get_change_counter();
     update_content(count, 0);
 }
 
diff --git a/qtmips_gui/memoryview.h b/qtmips_gui/memoryview.h
index 17af34f..f60ac53 100644
--- a/qtmips_gui/memoryview.h
+++ b/qtmips_gui/memoryview.h
@@ -67,6 +67,7 @@ public slots:
 
 protected:
     const machine::Memory *memory;
+    const machine::Cache *cache_data;
 
     virtual QList<QWidget*> row_widget(std::uint32_t address, QWidget *parent) = 0;
 
@@ -82,6 +83,7 @@ private slots:
 
 private:
     std::uint32_t change_counter;
+    std::uint32_t cache_data_change_counter;
     unsigned count;
     std::uint32_t addr_0; // First address in view
 
-- 
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