[kernel, hle] Initial 22.0.0 kernel changes and cmd stubs (#3761)

- KProcess::Run() and CreateThread() SVC now write the current thread handle to TLS+0x110
- KPageTableBase::LockForMapDeviceAddressSpace now checks for a new KPageTableBase boolean, m_allowed_exec_device_mapping
- Stub `am` + `acc` + `settings` cmd module that needs to work for qlaunch

Thanks to: @alula and @yellows8
Source for changes: https://github.com/Atmosphere-NX/Atmosphere/pull/2744, https://switchbrew.org/, https://yls8.mtheall.com/

Co-authored-by: PavelBARABANOV <pavelbarabanov94@gmail.com>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3761
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>

7 files changed, 53 insertions, 23 deletions

diff --git a/src/core/hle/kernel/k_page_table_base.cpp b/src/core/hle/kernel/k_page_table_base.cpp
index e5b2ed7041..3696f9f251 100644
--- a/src/core/hle/kernel/k_page_table_base.cpp
+++ b/src/core/hle/kernel/k_page_table_base.cpp
@@ -268,6 +268,7 @@ Result KPageTableBase::InitializeForProcess(Svc::CreateProcessFlag as_type, bool
     // Set other basic fields.
     m_enable_aslr = enable_aslr;
     m_enable_device_address_space_merge = enable_das_merge;
+    m_allowed_exec_device_mapping = false;
     m_address_space_start = start;
     m_address_space_end = end;
     m_is_kernel = false;
diff --git a/src/core/hle/kernel/k_page_table_base.h b/src/core/hle/kernel/k_page_table_base.h
index 90f8124a24..726fad989f 100644
--- a/src/core/hle/kernel/k_page_table_base.h
+++ b/src/core/hle/kernel/k_page_table_base.h
@@ -223,6 +223,7 @@ private:
     bool m_is_kernel{};
     bool m_enable_aslr{};
     bool m_enable_device_address_space_merge{};
+    bool m_allowed_exec_device_mapping{};
     KMemoryBlockSlabManager* m_memory_block_slab_manager{};
     KBlockInfoManager* m_block_info_manager{};
     KResourceLimit* m_resource_limit{};
@@ -255,6 +256,10 @@ public:
         return m_enable_aslr;
     }
 
+    void AllowDeviceMappingOfExecPages() {
+        m_allowed_exec_device_mapping = true;
+    }
+
     bool Contains(KProcessAddress addr) const {
         return m_address_space_start <= addr && addr <= m_address_space_end - 1;
     }
diff --git a/src/core/hle/kernel/k_process.cpp b/src/core/hle/kernel/k_process.cpp
index bd50f74c27..70e578f22a 100644
--- a/src/core/hle/kernel/k_process.cpp
+++ b/src/core/hle/kernel/k_process.cpp
@@ -341,6 +341,11 @@ Result KProcess::Initialize(const Svc::CreateProcessParameter& params, const KPa
     // Initialize capabilities.
     R_TRY(m_capabilities.InitializeForKip(caps, std::addressof(m_page_table)));
 
+    // Enable mapping device pages as executable on legacy processes.
+    if (m_capabilities.GetIntendedKernelMajorVersion() < 26) {
+        m_page_table.AllowDeviceMappingOfExecPages();
+    }
+
     // Initialize the process id.
     m_process_id = m_kernel.CreateNewUserProcessID();
     ASSERT(InitialProcessIdMin <= m_process_id);
@@ -437,6 +442,11 @@ Result KProcess::Initialize(const Svc::CreateProcessParameter& params,
     // Initialize capabilities.
     R_TRY(m_capabilities.InitializeForUser(user_caps, std::addressof(m_page_table)));
 
+    // Enable mapping device pages as executable on legacy processes.
+    if (m_capabilities.GetIntendedKernelMajorVersion() < 26) {
+        m_page_table.AllowDeviceMappingOfExecPages();
+    }
+
     // Initialize the process id.
     m_process_id = m_kernel.CreateNewUserProcessID();
     ASSERT(ProcessIdMin <= m_process_id);
@@ -989,6 +999,9 @@ Result KProcess::Run(s32 priority, size_t stack_size) {
     main_thread->GetContext().r[0] = 0;
     main_thread->GetContext().r[1] = thread_handle;
 
+    // Pass the thread handle to the thread local region.
+    this->GetMemory().Write32(GetInteger(main_thread->GetTlsAddress()) + 0x110, thread_handle);
+
     // Update our state.
     this->ChangeState((state == State::Created) ? State::Running : State::RunningAttached);
     ON_RESULT_FAILURE_2 {
diff --git a/src/core/hle/kernel/k_process_page_table.h b/src/core/hle/kernel/k_process_page_table.h
index 6462e44a99..97c9238907 100644
--- a/src/core/hle/kernel/k_process_page_table.h
+++ b/src/core/hle/kernel/k_process_page_table.h
@@ -33,6 +33,10 @@ public:
         m_page_table.Finalize();
     }
 
+    void AllowDeviceMappingOfExecPages() {
+        m_page_table.AllowDeviceMappingOfExecPages();
+    }
+
     [[nodiscard]] Core::Memory::Memory& GetMemory() noexcept { return m_page_table.GetMemory(); }
     [[nodiscard]] Core::Memory::Memory const& GetMemory() const noexcept { return m_page_table.GetMemory(); }
     [[nodiscard]] Common::PageTable& GetImpl() noexcept { return m_page_table.GetImpl(); }
diff --git a/src/core/hle/kernel/k_thread.cpp b/src/core/hle/kernel/k_thread.cpp
index ea9b7eb114..0af315d726 100644
--- a/src/core/hle/kernel/k_thread.cpp
+++ b/src/core/hle/kernel/k_thread.cpp
@@ -76,11 +76,13 @@ namespace Kernel {
             std::atomic_uint16_t interrupt_flag;
             std::atomic_uint8_t cache_maintenance_flag;
             std::atomic_int64_t thread_cpu_time;
+            std::atomic_uint32_t current_thread_handle;
         };
         static_assert(offsetof(ThreadLocalRegion, disable_count) == 0x100);
         static_assert(offsetof(ThreadLocalRegion, interrupt_flag) == 0x102);
         static_assert(offsetof(ThreadLocalRegion, cache_maintenance_flag) == 0x104);
         static_assert(offsetof(ThreadLocalRegion, thread_cpu_time) == 0x108);
+        static_assert(offsetof(ThreadLocalRegion, current_thread_handle) == 0x110);
 
         class ThreadQueueImplForKThreadSleep final : public KThreadQueueWithoutEndWait {
         public:
@@ -128,24 +130,24 @@ namespace Kernel {
 
         // Next, assert things based on the type.
         switch (type) {
-            case ThreadType::Main:
-                ASSERT(arg == 0);
-                [[fallthrough]];
-            case ThreadType::User:
-                ASSERT(((owner == nullptr) ||
-                        (owner->GetCoreMask() | (1ULL << virt_core)) == owner->GetCoreMask()));
-                ASSERT(((owner == nullptr) || (prio > Svc::LowestThreadPriority) ||
-                        (owner->GetPriorityMask() | (1ULL << prio)) == owner->GetPriorityMask()));
-                break;
-            case ThreadType::HighPriority:
-            case ThreadType::Dummy:
-                break;
-            case ThreadType::Kernel:
-                UNIMPLEMENTED();
-                break;
-            default:
-                ASSERT_MSG(false, "KThread::Initialize: Unknown ThreadType {}", static_cast<u32>(type));
-                break;
+        case ThreadType::Main:
+            ASSERT(arg == 0);
+            [[fallthrough]];
+        case ThreadType::User:
+            ASSERT(((owner == nullptr) ||
+                    (owner->GetCoreMask() | (1ULL << virt_core)) == owner->GetCoreMask()));
+            ASSERT(((owner == nullptr) || (prio > Svc::LowestThreadPriority) ||
+                    (owner->GetPriorityMask() | (1ULL << prio)) == owner->GetPriorityMask()));
+            break;
+        case ThreadType::HighPriority:
+        case ThreadType::Dummy:
+            break;
+        case ThreadType::Kernel:
+            UNIMPLEMENTED();
+            break;
+        default:
+            ASSERT_MSG(false, "KThread::Initialize: Unknown ThreadType {}", static_cast<u32>(type));
+            break;
         }
         m_thread_type = type;
 
diff --git a/src/core/hle/kernel/svc/svc_thread.cpp b/src/core/hle/kernel/svc/svc_thread.cpp
index ca5ce6fe07..1aa6f87c04 100644
--- a/src/core/hle/kernel/svc/svc_thread.cpp
+++ b/src/core/hle/kernel/svc/svc_thread.cpp
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
@@ -75,7 +75,12 @@ Result CreateThread(Core::System& system, Handle* out_handle, u64 entry_point, u
     KThread::Register(kernel, thread);
 
     // Add the thread to the handle table.
-    R_RETURN(process.GetHandleTable().Add(out_handle, thread));
+    R_TRY(process.GetHandleTable().Add(out_handle, thread));
+
+    // Pass the thread handle to the thread local region.
+    process.GetMemory().Write32(GetInteger(thread->GetTlsAddress()) + 0x110, *out_handle);
+
+    R_SUCCEED();
 }
 
 /// Starts the thread for the provided handle
diff --git a/src/core/hle/kernel/svc_version.h b/src/core/hle/kernel/svc_version.h
index b47874dcde..ec5c5a006a 100644
--- a/src/core/hle/kernel/svc_version.h
+++ b/src/core/hle/kernel/svc_version.h
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
@@ -53,8 +53,8 @@ constexpr inline u32 RequiredKernelVersion =
 
 // This is the highest SVC version supported, to be updated on new kernel releases.
 // NOTE: Official kernel versions have SVC major = SDK major + 4, SVC minor = SDK minor.
-constexpr inline u32 SupportedKernelMajorVersion = ConvertToSvcMajorVersion(20);
-constexpr inline u32 SupportedKernelMinorVersion = ConvertToSvcMinorVersion(5);
+constexpr inline u32 SupportedKernelMajorVersion = ConvertToSvcMajorVersion(22);
+constexpr inline u32 SupportedKernelMinorVersion = ConvertToSvcMinorVersion(2);
 constexpr inline u32 SupportedKernelVersion =
     EncodeKernelVersion(SupportedKernelMajorVersion, SupportedKernelMinorVersion);