1 files changed, 75 insertions, 0 deletions
diff --git a/src/core/hle/service/psc/time/clocks/system_clock_core.cpp b/src/core/hle/service/psc/time/clocks/system_clock_core.cpp
new file mode 100644
index 000000000..c507ef517
--- /dev/null
+++ b/src/core/hle/service/psc/time/clocks/system_clock_core.cpp
@@ -0,0 +1,75 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "core/hle/service/psc/time/clocks/context_writers.h"
+#include "core/hle/service/psc/time/clocks/system_clock_core.h"
+
+namespace Service::PSC::Time {
+
+bool SystemClockCore::CheckClockSourceMatches() {
+    SystemClockContext context{};
+    if (GetContext(context) != ResultSuccess) {
+        return false;
+    }
+
+    SteadyClockTimePoint time_point{};
+    if (m_steady_clock.GetCurrentTimePoint(time_point) != ResultSuccess) {
+        return false;
+    }
+
+    return context.steady_time_point.IdMatches(time_point);
+}
+
+Result SystemClockCore::GetCurrentTime(s64* out_time) const {
+    R_UNLESS(out_time != nullptr, ResultInvalidArgument);
+
+    SystemClockContext context{};
+    SteadyClockTimePoint time_point{};
+
+    R_TRY(m_steady_clock.GetCurrentTimePoint(time_point));
+    R_TRY(GetContext(context));
+
+    R_UNLESS(context.steady_time_point.IdMatches(time_point), ResultClockMismatch);
+
+    *out_time = context.offset + time_point.time_point;
+    R_SUCCEED();
+}
+
+Result SystemClockCore::SetCurrentTime(s64 time) {
+    SteadyClockTimePoint time_point{};
+    R_TRY(m_steady_clock.GetCurrentTimePoint(time_point));
+
+    SystemClockContext context{
+        .offset = time - time_point.time_point,
+        .steady_time_point = time_point,
+    };
+    R_RETURN(SetContextAndWrite(context));
+}
+
+Result SystemClockCore::GetContext(SystemClockContext& out_context) const {
+    out_context = m_context;
+    R_SUCCEED();
+}
+
+Result SystemClockCore::SetContext(SystemClockContext& context) {
+    m_context = context;
+    R_SUCCEED();
+}
+
+Result SystemClockCore::SetContextAndWrite(SystemClockContext& context) {
+    R_TRY(SetContext(context));
+
+    if (m_context_writer) {
+        R_RETURN(m_context_writer->Write(context));
+    }
+
+    R_SUCCEED();
+}
+
+void SystemClockCore::LinkOperationEvent(OperationEvent& operation_event) {
+    if (m_context_writer) {
+        m_context_writer->Link(operation_event);
+    }
+}
+
+} // namespace Service::PSC::Time