From 1323ab2f5f1627b39e48b6f970ad8208fa7af71e Mon Sep 17 00:00:00 2001
From: Subv <subv2112@gmail.com>
Date: Sat, 19 Nov 2016 20:40:04 -0500
Subject: Kernel/Loader: Grab the system mode from the NCCH ExHeader.

3dsx and elf files default to system mode 2 (96MB allocated to the application).

This allows Home Menu to boot without modifications.
Closes #1849
---
 src/citra_qt/main.cpp | 24 ++++++++++++++++--------
 src/citra_qt/main.h   |  7 ++++++-
 2 files changed, 22 insertions(+), 9 deletions(-)

(limited to 'src/citra_qt')

diff --git a/src/citra_qt/main.cpp b/src/citra_qt/main.cpp
index 0bf9f48d6..9589da4ba 100644
--- a/src/citra_qt/main.cpp
+++ b/src/citra_qt/main.cpp
@@ -253,7 +253,7 @@ void GMainWindow::OnDisplayTitleBars(bool show) {
     }
 }
 
-bool GMainWindow::InitializeSystem() {
+bool GMainWindow::InitializeSystem(u32 system_mode) {
     // Shutdown previous session if the emu thread is still active...
     if (emu_thread != nullptr)
         ShutdownGame();
@@ -270,7 +270,7 @@ bool GMainWindow::InitializeSystem() {
     }
 
     // Initialize the core emulation
-    System::Result system_result = System::Init(render_window);
+    System::Result system_result = System::Init(render_window, system_mode);
     if (System::Result::Success != system_result) {
         switch (system_result) {
         case System::Result::ErrorInitVideoCore:
@@ -299,8 +299,21 @@ bool GMainWindow::LoadROM(const std::string& filename) {
         return false;
     }
 
+    u32 system_mode;
+    Loader::ResultStatus load_result = app_loader->LoadKernelSystemMode(system_mode);
+    if (Loader::ResultStatus::Success != load_result) {
+        LOG_CRITICAL(Frontend, "Failed to load ROM!", load_result);
+        QMessageBox::critical(this, tr("Error while loading ROM!"),
+                              tr("Could not determine the system mode."));
+        return false;
+    }
+
+    if (!InitializeSystem(system_mode))
+        return false;
+
     Loader::ResultStatus result = app_loader->Load();
     if (Loader::ResultStatus::Success != result) {
+        System::Shutdown();
         LOG_CRITICAL(Frontend, "Failed to load ROM!");
 
         switch (result) {
@@ -338,14 +351,9 @@ void GMainWindow::BootGame(const std::string& filename) {
     LOG_INFO(Frontend, "Citra starting...");
     StoreRecentFile(filename); // Put the filename on top of the list
 
-    if (!InitializeSystem())
+    if (!LoadROM(filename))
         return;
 
-    if (!LoadROM(filename)) {
-        System::Shutdown();
-        return;
-    }
-
     // Create and start the emulation thread
     emu_thread = std::make_unique<EmuThread>(render_window);
     emit EmulationStarting(emu_thread.get());
diff --git a/src/citra_qt/main.h b/src/citra_qt/main.h
index 82eb90aae..f87178227 100644
--- a/src/citra_qt/main.h
+++ b/src/citra_qt/main.h
@@ -60,7 +60,12 @@ signals:
     void EmulationStopping();
 
 private:
-    bool InitializeSystem();
+    /**
+     * Initializes the emulation system.
+     * @param system_mode The system mode with which to intialize the kernel.
+     * @returns Whether the system was properly initialized.
+     */
+    bool InitializeSystem(u32 system_mode);
     bool LoadROM(const std::string& filename);
     void BootGame(const std::string& filename);
     void ShutdownGame();
-- 
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