added a stub for GetLockHandle

src/core/hle/service/apt.cpp

@@ -4,17 +4,42 @@
 
 
 #include "common/log.h"
+
+#include "core/hle/hle.h"
 #include "core/hle/service/apt.h"
 
-
-
-
 namespace Service {
 
+// Returns handle to APT Mutex. Not imlemented.
+Syscall::Result APT::GetLockHandle() {
+    return 0x00000000;
+}
 
+/**
+ * Called when svcSendSyncRequest is called, loads command buffer and executes comand
+ * @return Return result of svcSendSyncRequest passed back to user app
+ */
 Syscall::Result APT::Sync() {
-    NOTICE_LOG(HLE, "APT::Sync - Initialize");
-    return 0;
+    Syscall::Result res = 0;
+    u32* cmd_buff = (u32*)HLE::GetPointer(HLE::CMD_BUFFER_ADDR + CMD_OFFSET);
+
+    switch(cmd_buff[0]) {
+    case CMD_HEADER_INIT:
+        NOTICE_LOG(OSHLE, "APT::Sync - Initialize");
+        break;
+
+    case CMD_HEADER_GET_LOCK_HANDLE:
+        NOTICE_LOG(OSHLE, "APT::Sync - GetLockHandle");
+        cmd_buff[5] = GetLockHandle();
+        break;
+
+    default:
+        ERROR_LOG(OSHLE, "APT::Sync - Unknown command 0x%08X", cmd_buff[0]);
+        res = -1;
+        break;
+    }
+
+    return res;
 }