8 files changed, 111 insertions, 1 deletions
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index 76f70a844..ec011787e 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -112,6 +112,10 @@ add_library(core STATIC
     hle/service/filesystem/filesystem.h
     hle/service/filesystem/fsp_srv.cpp
     hle/service/filesystem/fsp_srv.h
+    hle/service/friend/friend.cpp
+    hle/service/friend/friend.h
+    hle/service/friend/friend_a.cpp
+    hle/service/friend/friend_a.h
     hle/service/hid/hid.cpp
     hle/service/hid/hid.h
     hle/service/lm/lm.cpp
diff --git a/src/core/hle/service/acc/acc_u0.cpp b/src/core/hle/service/acc/acc_u0.cpp
index 7955f726b..52c3491d5 100644
--- a/src/core/hle/service/acc/acc_u0.cpp
+++ b/src/core/hle/service/acc/acc_u0.cpp
@@ -65,11 +65,19 @@ void ACC_U0::GetUserExistence(Kernel::HLERequestContext& ctx) {
 }
 
 void ACC_U0::ListAllUsers(Kernel::HLERequestContext& ctx) {
+    LOG_WARNING(Service_ACC, "(STUBBED) called");
+    constexpr std::array<u128, 10> user_ids{DEFAULT_USER_ID};
+    ctx.WriteBuffer(user_ids.data(), user_ids.size());
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(RESULT_SUCCESS);
+}
+
+void ACC_U0::ListOpenUsers(Kernel::HLERequestContext& ctx) {
+    LOG_WARNING(Service_ACC, "(STUBBED) called");
     constexpr std::array<u128, 10> user_ids{DEFAULT_USER_ID};
     ctx.WriteBuffer(user_ids.data(), user_ids.size());
     IPC::ResponseBuilder rb{ctx, 2};
     rb.Push(RESULT_SUCCESS);
-    LOG_DEBUG(Service_ACC, "called");
 }
 
 void ACC_U0::GetProfile(Kernel::HLERequestContext& ctx) {
@@ -103,6 +111,7 @@ ACC_U0::ACC_U0() : ServiceFramework("acc:u0") {
     static const FunctionInfo functions[] = {
         {1, &ACC_U0::GetUserExistence, "GetUserExistence"},
         {2, &ACC_U0::ListAllUsers, "ListAllUsers"},
+        {3, &ACC_U0::ListOpenUsers, "ListOpenUsers"},
         {4, &ACC_U0::GetLastOpenedUser, "GetLastOpenedUser"},
         {5, &ACC_U0::GetProfile, "GetProfile"},
         {100, &ACC_U0::InitializeApplicationInfo, "InitializeApplicationInfo"},
diff --git a/src/core/hle/service/acc/acc_u0.h b/src/core/hle/service/acc/acc_u0.h
index d7732e75b..222f37282 100644
--- a/src/core/hle/service/acc/acc_u0.h
+++ b/src/core/hle/service/acc/acc_u0.h
@@ -29,6 +29,7 @@ public:
 private:
     void GetUserExistence(Kernel::HLERequestContext& ctx);
     void ListAllUsers(Kernel::HLERequestContext& ctx);
+    void ListOpenUsers(Kernel::HLERequestContext& ctx);
     void GetLastOpenedUser(Kernel::HLERequestContext& ctx);
     void GetProfile(Kernel::HLERequestContext& ctx);
     void InitializeApplicationInfo(Kernel::HLERequestContext& ctx);
diff --git a/src/core/hle/service/friend/friend.cpp b/src/core/hle/service/friend/friend.cpp
new file mode 100644
index 000000000..26593bb0c
--- /dev/null
+++ b/src/core/hle/service/friend/friend.cpp
@@ -0,0 +1,28 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/logging/log.h"
+#include "core/hle/ipc_helpers.h"
+#include "core/hle/service/friend/friend.h"
+#include "core/hle/service/friend/friend_a.h"
+
+namespace Service {
+namespace Friend {
+
+void Module::Interface::Unknown(Kernel::HLERequestContext& ctx) {
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(RESULT_SUCCESS);
+    LOG_WARNING(Service_Friend, "(STUBBED) called");
+}
+
+Module::Interface::Interface(std::shared_ptr<Module> module, const char* name)
+    : ServiceFramework(name), module(std::move(module)) {}
+
+void InstallInterfaces(SM::ServiceManager& service_manager) {
+    auto module = std::make_shared<Module>();
+    std::make_shared<Friend_A>(module)->InstallAsService(service_manager);
+}
+
+} // namespace Friend
+} // namespace Service
diff --git a/src/core/hle/service/friend/friend.h b/src/core/hle/service/friend/friend.h
new file mode 100644
index 000000000..ffa498397
--- /dev/null
+++ b/src/core/hle/service/friend/friend.h
@@ -0,0 +1,29 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Service {
+namespace Friend {
+
+class Module final {
+public:
+    class Interface : public ServiceFramework<Interface> {
+    public:
+        Interface(std::shared_ptr<Module> module, const char* name);
+
+        void Unknown(Kernel::HLERequestContext& ctx);
+
+    protected:
+        std::shared_ptr<Module> module;
+    };
+};
+
+/// Registers all Friend services with the specified service manager.
+void InstallInterfaces(SM::ServiceManager& service_manager);
+
+} // namespace Friend
+} // namespace Service
diff --git a/src/core/hle/service/friend/friend_a.cpp b/src/core/hle/service/friend/friend_a.cpp
new file mode 100644
index 000000000..e1f2397c2
--- /dev/null
+++ b/src/core/hle/service/friend/friend_a.cpp
@@ -0,0 +1,19 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/friend/friend_a.h"
+
+namespace Service {
+namespace Friend {
+
+Friend_A::Friend_A(std::shared_ptr<Module> module)
+    : Module::Interface(std::move(module), "friend:a") {
+    static const FunctionInfo functions[] = {
+        {0, &Friend_A::Unknown, "Unknown"},
+    };
+    RegisterHandlers(functions);
+}
+
+} // namespace Friend
+} // namespace Service
diff --git a/src/core/hle/service/friend/friend_a.h b/src/core/hle/service/friend/friend_a.h
new file mode 100644
index 000000000..68fa58297
--- /dev/null
+++ b/src/core/hle/service/friend/friend_a.h
@@ -0,0 +1,18 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/friend/friend.h"
+
+namespace Service {
+namespace Friend {
+
+class Friend_A final : public Module::Interface {
+public:
+    explicit Friend_A(std::shared_ptr<Module> module);
+};
+
+} // namespace Friend
+} // namespace Service
diff --git a/src/core/hle/service/service.cpp b/src/core/hle/service/service.cpp
index 5e6d83729..6a2d6a4ef 100644
--- a/src/core/hle/service/service.cpp
+++ b/src/core/hle/service/service.cpp
@@ -20,6 +20,7 @@
 #include "core/hle/service/apm/apm.h"
 #include "core/hle/service/audio/audio.h"
 #include "core/hle/service/filesystem/filesystem.h"
+#include "core/hle/service/friend/friend.h"
 #include "core/hle/service/hid/hid.h"
 #include "core/hle/service/lm/lm.h"
 #include "core/hle/service/nifm/nifm.h"
@@ -180,6 +181,7 @@ void Init() {
     APM::InstallInterfaces(*SM::g_service_manager);
     Audio::InstallInterfaces(*SM::g_service_manager);
     FileSystem::InstallInterfaces(*SM::g_service_manager);
+    Friend::InstallInterfaces(*SM::g_service_manager);
     HID::InstallInterfaces(*SM::g_service_manager);
     LM::InstallInterfaces(*SM::g_service_manager);
     NIFM::InstallInterfaces(*SM::g_service_manager);