From da6673e79acf26d728d347edc15c123d6c96a42f Mon Sep 17 00:00:00 2001
From: Fernando Sahmkow <fsahmkow27@gmail.com>
Date: Sat, 16 Oct 2021 11:54:09 +0200
Subject: [PATCH] SVC: Implement svcInfo:IdleTickCount
Used by the Witcher 3
---
src/core/hle/kernel/k_scheduler.h | 5 +++++
src/core/hle/kernel/svc.cpp | 17 +++++++++++++++++
2 files changed, 22 insertions(+)
diff --git a/src/core/hle/kernel/k_scheduler.h b/src/core/hle/kernel/k_scheduler.h
index c8ccc1ae4..7df288438 100644
--- a/src/core/hle/kernel/k_scheduler.h
+++ b/src/core/hle/kernel/k_scheduler.h
@@ -49,6 +49,11 @@ public:
/// Gets the current running thread
[[nodiscard]] KThread* GetCurrentThread() const;
+ /// Gets the idle thread
+ [[nodiscard]] KThread* GetIdleThread() const {
+ return idle_thread;
+ }
+
/// Returns true if the scheduler is idle
[[nodiscard]] bool IsIdle() const {
return GetCurrentThread() == idle_thread;
diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp
index f98f24a60..7f38ade1c 100644
--- a/src/core/hle/kernel/svc.cpp
+++ b/src/core/hle/kernel/svc.cpp
@@ -886,7 +886,24 @@ static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, Handle
*result = out_ticks;
return ResultSuccess;
}
+ case GetInfoType::IdleTickCount: {
+ if (handle == 0) {
+ LOG_ERROR(Kernel_SVC, "Thread handle does not exist, handle=0x{:08X}",
+ static_cast<Handle>(handle));
+ return ResultInvalidHandle;
+ }
+ if (info_sub_id != 0xFFFFFFFFFFFFFFFF && info_sub_id != system.CurrentCoreIndex()) {
+ LOG_ERROR(Kernel_SVC, "Core is not the current core, got {}", info_sub_id);
+ return ResultInvalidCombination;
+ }
+
+ const auto& scheduler = *system.Kernel().CurrentScheduler();
+ const auto* const idle_thread = scheduler.GetIdleThread();
+
+ *result = idle_thread->GetCpuTime();
+ return ResultSuccess;
+ }
default:
LOG_ERROR(Kernel_SVC, "Unimplemented svcGetInfo id=0x{:016X}", info_id);
return ResultInvalidEnumValue;