HLE: move SharedPage into Kernel

similar to config_mem, kernel is responsible for setting up this

src/core/hle/kernel/kernel.cpp

@@ -8,9 +8,9 @@
 #include "core/hle/kernel/memory.h"
 #include "core/hle/kernel/process.h"
 #include "core/hle/kernel/resource_limit.h"
+#include "core/hle/kernel/shared_page.h"
 #include "core/hle/kernel/thread.h"
 #include "core/hle/kernel/timer.h"
-#include "core/hle/shared_page.h"
 
 namespace Kernel {
 
@@ -64,4 +64,12 @@ const TimerManager& KernelSystem::GetTimerManager() const {
     return *timer_manager;
 }
 
+SharedPage::Handler& KernelSystem::GetSharedPageHandler() {
+    return *shared_page_handler;
+}
+
+const SharedPage::Handler& KernelSystem::GetSharedPageHandler() const {
+    return *shared_page_handler;
+}
+
 } // namespace Kernel

src/core/hle/kernel/kernel.h

@@ -16,6 +16,10 @@ namespace ConfigMem {
 class Handler;
 }
 
+namespace SharedPage {
+class Handler;
+}
+
 namespace Kernel {
 
 class AddressArbiter;
@@ -202,6 +206,9 @@ public:
 
     void MapSharedPages(VMManager& address_space);
 
+    SharedPage::Handler& GetSharedPageHandler();
+    const SharedPage::Handler& GetSharedPageHandler() const;
+
 private:
     void MemoryInit(u32 mem_type);
 
@@ -221,6 +228,7 @@ private:
     std::unique_ptr<TimerManager> timer_manager;
 
     std::unique_ptr<ConfigMem::Handler> config_mem_handler;
+    std::unique_ptr<SharedPage::Handler> shared_page_handler;
 };
 
 } // namespace Kernel

src/core/hle/kernel/memory.cpp

@@ -14,6 +14,7 @@
 #include "core/core.h"
 #include "core/hle/kernel/config_mem.h"
 #include "core/hle/kernel/memory.h"
+#include "core/hle/kernel/shared_page.h"
 #include "core/hle/kernel/vm_manager.h"
 #include "core/hle/result.h"
 #include "core/memory.h"
@@ -72,6 +73,8 @@ void KernelSystem::MemoryInit(u32 mem_type) {
     config_mem.app_mem_alloc = memory_region_sizes[mem_type][0];
     config_mem.sys_mem_alloc = memory_regions[1].size;
     config_mem.base_mem_alloc = memory_regions[2].size;
+
+    shared_page_handler = std::make_unique<SharedPage::Handler>();
 }
 
 void MemoryShutdown() {
@@ -164,11 +167,9 @@ void KernelSystem::MapSharedPages(VMManager& address_space) {
 
     auto shared_page_vma =
         address_space
-            .MapBackingMemory(
-                Memory::SHARED_PAGE_VADDR,
-                reinterpret_cast<u8*>(
-                    &Core::System::GetInstance().GetSharedPageHandler()->GetSharedPage()),
-                Memory::SHARED_PAGE_SIZE, MemoryState::Shared)
+            .MapBackingMemory(Memory::SHARED_PAGE_VADDR,
+                              reinterpret_cast<u8*>(&shared_page_handler->GetSharedPage()),
+                              Memory::SHARED_PAGE_SIZE, MemoryState::Shared)
             .Unwrap();
     address_space.Reprotect(shared_page_vma, VMAPermission::Read);
 }

src/core/hle/kernel/shared_page.cpp

@@ -5,8 +5,8 @@
 #include <chrono>
 #include <cstring>
 #include "core/core_timing.h"
+#include "core/hle/kernel/shared_page.h"
 #include "core/hle/service/ptm/ptm.h"
-#include "core/hle/shared_page.h"
 #include "core/movie.h"
 #include "core/settings.h"
 

src/core/hle/kernel/wait_object.cpp

@@ -12,7 +12,6 @@
 #include "core/hle/kernel/resource_limit.h"
 #include "core/hle/kernel/thread.h"
 #include "core/hle/kernel/timer.h"
-#include "core/hle/shared_page.h"
 
 namespace Kernel {
 

src/core/hle/service/gsp/gsp_gpu.cpp

@@ -11,6 +11,7 @@
 #include "core/hle/ipc_helpers.h"
 #include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/shared_memory.h"
+#include "core/hle/kernel/shared_page.h"
 #include "core/hle/result.h"
 #include "core/hle/service/gsp/gsp_gpu.h"
 #include "core/hw/gpu.h"
@@ -731,7 +732,7 @@ void GSP_GPU::SetLedForceOff(Kernel::HLERequestContext& ctx) {
 
     u8 state = rp.Pop<u8>();
 
-    system.GetSharedPageHandler()->Set3DLed(state);
+    system.Kernel().GetSharedPageHandler().Set3DLed(state);
 
     IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
     rb.Push(RESULT_SUCCESS);

src/core/hle/service/nwm/nwm_uds.cpp

@@ -20,6 +20,7 @@
 #include "core/hle/ipc_helpers.h"
 #include "core/hle/kernel/event.h"
 #include "core/hle/kernel/shared_memory.h"
+#include "core/hle/kernel/shared_page.h"
 #include "core/hle/lock.h"
 #include "core/hle/result.h"
 #include "core/hle/service/nwm/nwm_uds.h"
@@ -1407,8 +1408,8 @@ NWM_UDS::NWM_UDS(Core::System& system) : ServiceFramework("nwm::UDS"), system(sy
         }
     }
 
-    system.GetSharedPageHandler()->SetMacAddress(mac);
-    system.GetSharedPageHandler()->SetWifiLinkLevel(SharedPage::WifiLinkLevel::BEST);
+    system.Kernel().GetSharedPageHandler().SetMacAddress(mac);
+    system.Kernel().GetSharedPageHandler().SetWifiLinkLevel(SharedPage::WifiLinkLevel::BEST);
 }
 
 NWM_UDS::~NWM_UDS() {