1 files changed, 72 insertions, 0 deletions

diff --git a/src/core/hle/service/time/system_clock_core.cpp b/src/core/hle/service/time/system_clock_core.cpp
new file mode 100644
index 000000000..1a3ab8cfa
--- /dev/null
+++ b/src/core/hle/service/time/system_clock_core.cpp
@@ -0,0 +1,72 @@
+// Copyright 2019 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/time/steady_clock_core.h"
+#include "core/hle/service/time/system_clock_context_update_callback.h"
+#include "core/hle/service/time/system_clock_core.h"
+
+namespace Service::Time::Clock {
+
+SystemClockCore::SystemClockCore(SteadyClockCore& steady_clock_core)
+    : steady_clock_core{steady_clock_core}, is_initialized{} {
+    context.steady_time_point.clock_source_id = steady_clock_core.GetClockSourceId();
+}
+
+SystemClockCore ::~SystemClockCore() = default;
+
+ResultCode SystemClockCore::GetCurrentTime(Core::System& system, s64& posix_time) const {
+    posix_time = 0;
+
+    const SteadyClockTimePoint current_time_point{steady_clock_core.GetCurrentTimePoint(system)};
+
+    SystemClockContext clock_context{};
+    if (const ResultCode result{GetClockContext(system, clock_context)}; result != RESULT_SUCCESS) {
+        return result;
+    }
+
+    if (current_time_point.clock_source_id != clock_context.steady_time_point.clock_source_id) {
+        return ERROR_TIME_MISMATCH;
+    }
+
+    posix_time = clock_context.offset + current_time_point.time_point;
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode SystemClockCore::SetCurrentTime(Core::System& system, s64 posix_time) {
+    const SteadyClockTimePoint current_time_point{steady_clock_core.GetCurrentTimePoint(system)};
+    const SystemClockContext clock_context{posix_time - current_time_point.time_point,
+                                           current_time_point};
+
+    if (const ResultCode result{SetClockContext(clock_context)}; result != RESULT_SUCCESS) {
+        return result;
+    }
+    return Flush(clock_context);
+}
+
+ResultCode SystemClockCore::Flush(const SystemClockContext& context) {
+    if (!system_clock_context_update_callback) {
+        return RESULT_SUCCESS;
+    }
+    return system_clock_context_update_callback->Update(context);
+}
+
+ResultCode SystemClockCore::SetSystemClockContext(const SystemClockContext& context) {
+    if (const ResultCode result{SetClockContext(context)}; result != RESULT_SUCCESS) {
+        return result;
+    }
+    return Flush(context);
+}
+
+bool SystemClockCore::IsClockSetup(Core::System& system) const {
+    SystemClockContext value{};
+    if (GetClockContext(system, value) == RESULT_SUCCESS) {
+        const SteadyClockTimePoint steady_clock_time_point{
+            steady_clock_core.GetCurrentTimePoint(system)};
+        return steady_clock_time_point.clock_source_id == value.steady_time_point.clock_source_id;
+    }
+    return {};
+}
+
+} // namespace Service::Time::Clock