diff --git a/src/core/hle/kernel/session.h b/src/core/hle/kernel/session.h
index 6ddaf970e7..26b086f878 100644
--- a/src/core/hle/kernel/session.h
+++ b/src/core/hle/kernel/session.h
@@ -32,6 +32,10 @@ constexpr u32 CallingPidDesc() {
     return 0x20;
 }
 
+constexpr u32 TransferHandleDesc() {
+    return 0x20;
+}
+
 constexpr u32 StaticBufferDesc(u32 size, unsigned int buffer_id) {
     return 0x2 | (size << 14) | ((buffer_id & 0xF) << 10);
 }
diff --git a/src/core/hle/service/srv.cpp b/src/core/hle/service/srv.cpp
index aae955bf85..8bd36d5eaf 100644
--- a/src/core/hle/service/srv.cpp
+++ b/src/core/hle/service/srv.cpp
@@ -1,4 +1,4 @@
-// Copyright 2014 Citra Emulator Project
+// Copyright 2016 Citra Emulator Project
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
@@ -15,23 +15,64 @@ namespace SRV {
 
 static Kernel::SharedPtr<Kernel::Event> event_handle;
 
-static void Initialize(Service::Interface* self) {
+/**
+ * SRV::RegisterClient service function
+ *  Inputs:
+ *      0: 0x00010002
+ *      1: ProcessId Header (must be 0x20)
+ *  Outputs:
+ *      0: 0x00010040
+ *      1: ResultCode
+ */
+static void RegisterClient(Service::Interface* self) {
     u32* cmd_buff = Kernel::GetCommandBuffer();
 
-    cmd_buff[1] = 0; // No error
+    if (cmd_buff[1] != IPC::CallingPidDesc()) {
+        cmd_buff[0] = IPC::MakeHeader(0x0, 0x1, 0); //0x40
+        cmd_buff[1] = ResultCode(ErrorDescription::OS_InvalidBufferDescriptor, ErrorModule::OS,
+                                 ErrorSummary::WrongArgument, ErrorLevel::Permanent).raw;
+        return;
+    }
+    cmd_buff[0] = IPC::MakeHeader(0x1, 0x1, 0); //0x10040
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    LOG_WARNING(Service_SRV, "(STUBBED) called");
 }
 
-static void GetProcSemaphore(Service::Interface* self) {
+/**
+ * SRV::EnableNotification service function
+ *  Inputs:
+ *      0: 0x00020000
+ *  Outputs:
+ *      0: 0x00020042
+ *      1: ResultCode
+ *      2: Translation descriptor: 0x20
+ *      3: Handle to semaphore signaled on process notification
+ */
+static void EnableNotification(Service::Interface* self) {
     u32* cmd_buff = Kernel::GetCommandBuffer();
 
     // TODO(bunnei): Change to a semaphore once these have been implemented
     event_handle = Kernel::Event::Create(Kernel::ResetType::OneShot, "SRV:Event");
     event_handle->Clear();
 
-    cmd_buff[1] = 0; // No error
+    cmd_buff[0] = IPC::MakeHeader(0x2, 0x1, 0x2); // 0x20042
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    cmd_buff[2] = IPC::TransferHandleDesc();
     cmd_buff[3] = Kernel::g_handle_table.Create(event_handle).MoveFrom();
+    LOG_WARNING(Service_SRV, "(STUBBED) called");
 }
 
+/**
+ * SRV::GetServiceHandle service function
+ *  Inputs:
+ *      0: 0x00050100
+ *      1-2: 8-byte UTF-8 service name
+ *      3: Name length
+ *      4: Flags (bit0: if not set, return port-handle if session-handle unavailable)
+ *  Outputs:
+ *      1: ResultCode
+ *      3: Service handle
+ */
 static void GetServiceHandle(Service::Interface* self) {
     ResultCode res = RESULT_SUCCESS;
     u32* cmd_buff = Kernel::GetCommandBuffer();
@@ -49,16 +90,80 @@ static void GetServiceHandle(Service::Interface* self) {
     cmd_buff[1] = res.raw;
 }
 
+/**
+ * SRV::Subscribe service function
+ *  Inputs:
+ *      0: 0x00090040
+ *      1: Notification ID
+ *  Outputs:
+ *      0: 0x00090040
+ *      1: ResultCode
+ */
+static void Subscribe(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+
+    u32 notification_id = cmd_buff[1];
+
+    cmd_buff[0] = IPC::MakeHeader(0x9, 0x1, 0); // 0x90040
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    LOG_WARNING(Service_SRV, "(STUBBED) called, notification_id=0x%X", notification_id);
+}
+
+/**
+ * SRV::Unsubscribe service function
+ *  Inputs:
+ *      0: 0x000A0040
+ *      1: Notification ID
+ *  Outputs:
+ *      0: 0x000A0040
+ *      1: ResultCode
+ */
+static void Unsubscribe(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+
+    u32 notification_id = cmd_buff[1];
+
+    cmd_buff[0] = IPC::MakeHeader(0xA, 0x1, 0); // 0xA0040
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    LOG_WARNING(Service_SRV, "(STUBBED) called, notification_id=0x%X", notification_id);
+}
+
+/**
+ * SRV::PublishToSubscriber service function
+ *  Inputs:
+ *      0: 0x000C0080
+ *      1: Notification ID
+ *      2: Flags (bit0: only fire if not fired, bit1: report errors)
+ *  Outputs:
+ *      0: 0x000C0040
+ *      1: ResultCode
+ */
+static void PublishToSubscriber(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+
+    u32 notification_id = cmd_buff[1];
+    u8 flags = cmd_buff[2] & 0xFF;
+
+    cmd_buff[0] = IPC::MakeHeader(0xC, 0x1, 0); // 0xC0040
+    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+    LOG_WARNING(Service_SRV, "(STUBBED) called, notification_id=0x%X, flags=%u", notification_id, flags);
+}
+
 const Interface::FunctionInfo FunctionTable[] = {
-    {0x00010002, Initialize,          "Initialize"},
-    {0x00020000, GetProcSemaphore,    "GetProcSemaphore"},
-    {0x00030100, nullptr,             "RegisterService"},
-    {0x000400C0, nullptr,             "UnregisterService"},
-    {0x00050100, GetServiceHandle,    "GetServiceHandle"},
-    {0x000600C2, nullptr,             "RegisterHandle"},
-    {0x00090040, nullptr,             "Subscribe"},
-    {0x000B0000, nullptr,             "ReceiveNotification"},
-    {0x000C0080, nullptr,             "PublishToSubscriber"},
+    {0x00010002, RegisterClient,          "RegisterClient"},
+    {0x00020000, EnableNotification,      "EnableNotification"},
+    {0x00030100, nullptr,                 "RegisterService"},
+    {0x000400C0, nullptr,                 "UnregisterService"},
+    {0x00050100, GetServiceHandle,        "GetServiceHandle"},
+    {0x000600C2, nullptr,                 "RegisterPort"},
+    {0x000700C0, nullptr,                 "UnregisterPort"},
+    {0x00080100, nullptr,                 "GetPort"},
+    {0x00090040, Subscribe,               "Subscribe"},
+    {0x000A0040, Unsubscribe,             "Unsubscribe"},
+    {0x000B0000, nullptr,                 "ReceiveNotification"},
+    {0x000C0080, PublishToSubscriber,     "PublishToSubscriber"},
+    {0x000D0040, nullptr,                 "PublishAndGetSubscriber"},
+    {0x000E00C0, nullptr,                 "IsServiceRegistered"},
 };
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -66,10 +171,11 @@ const Interface::FunctionInfo FunctionTable[] = {
 
 Interface::Interface() {
     Register(FunctionTable);
+    event_handle = nullptr;
 }
 
 Interface::~Interface() {
     event_handle = nullptr;
 }
 
-} // namespace
+} // namespace SRV