Services/AM: Stubbed TitleIDListGetTotal and GetTitleIDList.

They will always return 0 titles for every media type for now.
This is needed to boot Home Menu further

src/core/hle/service/am_sys.cpp

@@ -5,19 +5,56 @@
 #include "core/hle/hle.h"
 #include "core/hle/service/am_sys.h"
 
-////////////////////////////////////////////////////////////////////////////////////////////////////
-// Namespace AM_SYS
-
 namespace AM_SYS {
 
-// Empty arrays are illegal -- commented out until an entry is added.
-//const Interface::FunctionInfo FunctionTable[] = { };
+/**
+ * Gets the number of installed titles in the requested media type
+ *  Inputs:
+ *    0: Command header (0x00010040)
+ *    1: Media type to load the titles from
+ *  Outputs:
+ *    1: Result, 0 on success, otherwise error code
+ *    2: The number of titles in the requested media type
+ */
+static void TitleIDListGetTotal(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+    u32 media_type = cmd_buff[1] & 0xFF;
 
-////////////////////////////////////////////////////////////////////////////////////////////////////
-// Interface class
+    cmd_buff[1] = RESULT_SUCCESS.raw;
+    cmd_buff[2] = 0;
+    LOG_WARNING(Service_CFG, "(STUBBED) media_type %u", media_type);
+}
+
+/**
+ * Loads information about the desired number of titles from the desired media type into an array
+ *  Inputs:
+ *    0: Command header (0x00020082)
+ *    1: The maximum number of titles to load
+ *    2: Media type to load the titles from
+ *    3: Descriptor of the output buffer pointer
+ *    4: Address of the output buffer
+ *  Outputs:
+ *    1: Result, 0 on success, otherwise error code
+ *    2: The number of titles loaded from the requested media type
+ */
+static void GetTitleIDList(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+    u32 num_titles = cmd_buff[1];
+    u32 media_type = cmd_buff[2] & 0xFF;
+    u32 addr = cmd_buff[4];
+
+    cmd_buff[1] = RESULT_SUCCESS.raw;
+    cmd_buff[2] = 0;
+    LOG_WARNING(Service_CFG, "(STUBBED) Requested %u titles from media type %u", num_titles, media_type);
+}
+
+const Interface::FunctionInfo FunctionTable[] = {
+    {0x00010040, TitleIDListGetTotal, "TitleIDListGetTotal"},
+    {0x00020082, GetTitleIDList, "GetTitleIDList"},
+};
 
 Interface::Interface() {
-    //Register(FunctionTable);
+    Register(FunctionTable);
 }
 
 } // namespace