From a4d10c950fcf8181f708eb4dffdc9133aa33193b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Karel=20Ko=C4=8D=C3=AD?= <cynerd@email.cz>
Date: Fri, 15 Dec 2017 22:46:01 +0100
Subject: Implement some barebone registers dock

---
 qtmips_gui/registersdock.cpp | 64 +++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 61 insertions(+), 3 deletions(-)

(limited to 'qtmips_gui/registersdock.cpp')

diff --git a/qtmips_gui/registersdock.cpp b/qtmips_gui/registersdock.cpp
index e8a5907..d038462 100644
--- a/qtmips_gui/registersdock.cpp
+++ b/qtmips_gui/registersdock.cpp
@@ -1,10 +1,68 @@
 #include "registersdock.h"
 
 RegistersDock::RegistersDock(QWidget *parent) : QDockWidget(parent) {
-    ui = new Ui::RegistersDock();
-    ui->setupUi(this);
+    regs = nullptr;
+
+    widg = new QScrollArea(this);
+    layout = new QFormLayout(widg);
+
+#define INIT(X, LABEL) do{ \
+        X = new QLabel(widg); \
+        X->setTextInteractionFlags(Qt::TextSelectableByMouse); \
+        layout->addRow(LABEL, X); \
+    } while(false)
+
+    INIT(pc, "PC:");
+    for (int i = 0; i < 32; i++)
+        INIT(gp[i], QString("GP") + QString::number(i) + QString(" ($") + QString::number(i) + QString("):"));
+    INIT(lo, "LO:");
+    INIT(hi, "HI:");
+
+#undef INIT
+
+    setWidget(widg);
 }
 
 RegistersDock::~RegistersDock() {
-    delete ui;
+    delete layout;
+    delete pc, hi, lo;
+    for (int i = 0; i < 32; i++)
+        delete gp[i];
+}
+
+void RegistersDock::setup(QtMipsMachine *machine) {
+    regs = machine->registers();
+    connect(regs, SIGNAL(pc_update(std::uint32_t)), this, SLOT(pc_changed(std::uint32_t)));
+    connect(regs, SIGNAL(gp_update(std::uint8_t,std::uint32_t)), this, SLOT(gp_changed(std::uint8_t,std::uint32_t)));
+    connect(regs, SIGNAL(hi_lo_update(bool,std::uint32_t)), this, SLOT(hi_lo_changed(bool,std::uint32_t)));
+
+    // Load values
+    labelVal(pc, regs->read_pc(), false);
+    labelVal(hi, regs->read_hi_lo(true), true);
+    labelVal(lo, regs->read_hi_lo(false), true);
+    for (int i = 0; i < 32; i++)
+        labelVal(gp[i], regs->read_gp(i), true);
+}
+
+void RegistersDock::pc_changed(std::uint32_t val) {
+    labelVal(pc, val, false);
+}
+
+void RegistersDock::gp_changed(std::uint8_t i, std::uint32_t val) {
+    SANITY_ASSERT(i < 32, QString("RegistersDock received signal with invalid gp register: ") + QString::number(i));
+    labelVal(gp[i], val, true);
+}
+
+void RegistersDock::hi_lo_changed(bool hi, std::uint32_t val) {
+    if (hi)
+        labelVal(this->hi, val, true);
+    else
+        labelVal(lo, val, true);
+}
+
+void RegistersDock::labelVal(QLabel *label, std::uint32_t value, bool dec) {
+    QString t = QString("0x") + QString::number(value, 16);
+    if (dec)
+        t += QString(" (") + QString::number(value) + QString(")");
+    label->setText(t);
 }
-- 
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