kernel/handle_table: Remove usages of the global system instance

Removes even more usages of the global system instance, trimming away
more dependencies on global variables and making them explicit in the
interface.

src/core/hle/kernel/handle_table.cpp

@@ -8,8 +8,9 @@
 #include "core/core.h"
 #include "core/hle/kernel/errors.h"
 #include "core/hle/kernel/handle_table.h"
-#include "core/hle/kernel/scheduler.h"
+#include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/process.h"
+#include "core/hle/kernel/scheduler.h"
 #include "core/hle/kernel/thread.h"
 
 namespace Kernel {
@@ -23,7 +24,7 @@ constexpr u16 GetGeneration(Handle handle) {
 }
 } // Anonymous namespace
 
-HandleTable::HandleTable() {
+HandleTable::HandleTable(KernelCore& kernel) : kernel{kernel} {
     Clear();
 }
 
@@ -104,9 +105,9 @@ bool HandleTable::IsValid(Handle handle) const {
 
 std::shared_ptr<Object> HandleTable::GetGeneric(Handle handle) const {
     if (handle == CurrentThread) {
-        return SharedFrom(Core::System::GetInstance().CurrentScheduler().GetCurrentThread());
+        return SharedFrom(kernel.CurrentScheduler().GetCurrentThread());
     } else if (handle == CurrentProcess) {
-        return SharedFrom(Core::System::GetInstance().CurrentProcess());
+        return SharedFrom(kernel.CurrentProcess());
     }
 
     if (!IsValid(handle)) {

src/core/hle/kernel/handle_table.h

@@ -14,6 +14,8 @@
 
 namespace Kernel {
 
+class KernelCore;
+
 enum KernelHandle : Handle {
     InvalidHandle = 0,
     CurrentThread = 0xFFFF8000,
@@ -48,7 +50,7 @@ public:
     /// This is the maximum limit of handles allowed per process in Horizon
     static constexpr std::size_t MAX_COUNT = 1024;
 
-    HandleTable();
+    explicit HandleTable(KernelCore& kernel);
     ~HandleTable();
 
     /**
@@ -134,6 +136,9 @@ private:
 
     /// Head of the free slots linked list.
     u16 next_free_slot = 0;
+
+    /// Underlying kernel instance that this handle table operates under.
+    KernelCore& kernel;
 };
 
 } // namespace Kernel

src/core/hle/kernel/kernel.cpp

@@ -50,7 +50,8 @@ namespace Kernel {
 
 struct KernelCore::Impl {
     explicit Impl(Core::System& system, KernelCore& kernel)
-        : global_scheduler{kernel}, synchronization{system}, time_manager{system}, system{system} {}
+        : global_scheduler{kernel}, synchronization{system}, time_manager{system},
+          global_handle_table{kernel}, system{system} {}
 
     void SetMulticore(bool is_multicore) {
         this->is_multicore = is_multicore;
@@ -307,7 +308,7 @@ struct KernelCore::Impl {
 
     // This is the kernel's handle table or supervisor handle table which
     // stores all the objects in place.
-    Kernel::HandleTable global_handle_table;
+    HandleTable global_handle_table;
 
     /// Map of named ports managed by the kernel, which can be retrieved using
     /// the ConnectToPort SVC.

src/core/hle/kernel/process.cpp

@@ -408,7 +408,7 @@ void Process::LoadModule(CodeSet code_set, VAddr base_addr) {
 Process::Process(Core::System& system)
     : SynchronizationObject{system.Kernel()}, page_table{std::make_unique<Memory::PageTable>(
                                                   system)},
-      address_arbiter{system}, mutex{system}, system{system} {}
+      handle_table{system.Kernel()}, address_arbiter{system}, mutex{system}, system{system} {}
 
 Process::~Process() = default;