1 files changed, 44 insertions, 0 deletions

diff --git a/src/core/hle/kernel/svc/svc_activity.cpp b/src/core/hle/kernel/svc/svc_activity.cpp
new file mode 100644
index 000000000..8774a5c98
--- /dev/null
+++ b/src/core/hle/kernel/svc/svc_activity.cpp
@@ -0,0 +1,44 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "core/core.h"
+#include "core/hle/kernel/k_process.h"
+#include "core/hle/kernel/k_thread.h"
+#include "core/hle/kernel/svc.h"
+#include "core/hle/kernel/svc_results.h"
+
+namespace Kernel::Svc {
+
+/// Sets the thread activity
+Result SetThreadActivity(Core::System& system, Handle thread_handle,
+                         ThreadActivity thread_activity) {
+    LOG_DEBUG(Kernel_SVC, "called, handle=0x{:08X}, activity=0x{:08X}", thread_handle,
+              thread_activity);
+
+    // Validate the activity.
+    constexpr auto IsValidThreadActivity = [](ThreadActivity activity) {
+        return activity == ThreadActivity::Runnable || activity == ThreadActivity::Paused;
+    };
+    R_UNLESS(IsValidThreadActivity(thread_activity), ResultInvalidEnumValue);
+
+    // Get the thread from its handle.
+    KScopedAutoObject thread =
+        system.Kernel().CurrentProcess()->GetHandleTable().GetObject<KThread>(thread_handle);
+    R_UNLESS(thread.IsNotNull(), ResultInvalidHandle);
+
+    // Check that the activity is being set on a non-current thread for the current process.
+    R_UNLESS(thread->GetOwnerProcess() == system.Kernel().CurrentProcess(), ResultInvalidHandle);
+    R_UNLESS(thread.GetPointerUnsafe() != GetCurrentThreadPointer(system.Kernel()), ResultBusy);
+
+    // Set the activity.
+    R_TRY(thread->SetActivity(thread_activity));
+
+    return ResultSuccess;
+}
+
+Result SetThreadActivity32(Core::System& system, Handle thread_handle,
+                           ThreadActivity thread_activity) {
+    return SetThreadActivity(system, thread_handle, thread_activity);
+}
+
+} // namespace Kernel::Svc