vm_manager: Add support for storing and getting main code region

Used as root for one region of cheats, set by loader

src/core/hle/kernel/vm_manager.cpp

@@ -786,6 +786,23 @@ u64 VMManager::GetNewMapRegionSize() const {
     return new_map_region_end - new_map_region_base;
 }
 
+void VMManager::SetMainCodeRegion(VAddr begin, VAddr end) {
+    main_code_region_base = begin;
+    main_code_region_end = end;
+}
+
+VAddr VMManager::GetMainCodeRegionBaseAddress() const {
+    return main_code_region_base;
+}
+
+VAddr VMManager::GetMainCodeRegionEndAddress() const {
+    return main_code_region_end;
+}
+
+u64 VMManager::GetMainCodeRegionSize() const {
+    return main_code_region_end - main_code_region_base;
+}
+
 VAddr VMManager::GetTLSIORegionBaseAddress() const {
     return tls_io_region_base;
 }