[dynarmic,loongarch] addressing Lizzie comments

(gdb) set scheduler-locking on
(gdb) continue

As discussed in #3848, follow-up to implement vCont support according to spec.

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3896
Reviewed-by: Lizzie <lizzie@eden-emu.dev>
Reviewed-by: crueter <crueter@eden-emu.dev>

CMakeLists.txt

@@ -306,7 +306,7 @@ if (YUZU_ROOM)
     add_compile_definitions(YUZU_ROOM)
 endif()
 
-if ((ANDROID OR APPLE OR UNIX) AND (NOT PLATFORM_LINUX OR ANDROID) AND NOT WIN32)
+if (UNIX AND NOT (PLATFORM_LINUX OR WIN32))
     if(CXX_APPLE OR CXX_CLANG)
         # libc++ has stop_token and jthread as experimental
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fexperimental-library")
@@ -524,6 +524,8 @@ elseif (WIN32)
         # PSAPI is the Process Status API
         set(PLATFORM_LIBRARIES ${PLATFORM_LIBRARIES} psapi imm32 version crypt32 rpcrt4 gdi32 wldap32 mswsock)
     endif()
+elseif (PLATFORM_MANAGARM)
+    set(PLATFORM_LIBRARIES iconv intl)
 elseif (PLATFORM_HAIKU)
     # Haiku is so special :)
     set(PLATFORM_LIBRARIES bsd /boot/system/lib/libnetwork.so)

src/common/cpu_features.cpp

@@ -303,7 +303,7 @@ namespace {
 }
 [[nodiscard]] s64 GetHostCNTFRQ() noexcept {
     u64 cntfrq_el0 = 0;
-#ifdef ANDROID
+#ifdef __ANDROID__
     std::string_view board{""};
     char buffer[PROP_VALUE_MAX];
     int len{__system_property_get("ro.product.board", buffer)};

src/common/error.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: 2013 Dolphin Emulator Project
 // SPDX-FileCopyrightText: 2014 Citra Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
@@ -30,7 +33,7 @@ std::string NativeErrorToString(int e) {
     return ret;
 #else
     char err_str[255];
-#if defined(ANDROID) ||                                                                            \
+#if defined(__ANDROID__) ||                                                                            \
     (defined(__GLIBC__) && (_GNU_SOURCE || (_POSIX_C_SOURCE < 200112L && _XOPEN_SOURCE < 600)))
     // Thread safe (GNU-specific)
     const char* str = strerror_r(e, err_str, sizeof(err_str));

src/common/fs/file.cpp

@@ -9,7 +9,7 @@
 #include "common/assert.h"
 #include "common/fs/file.h"
 #include "common/fs/fs.h"
-#ifdef ANDROID
+#ifdef __ANDROID__
 #include "common/fs/fs_android.h"
 #endif
 #include "common/logging.h"
@@ -259,7 +259,7 @@ void IOFile::Open(const fs::path& path, FileAccessMode mode, FileType type, File
     } else {
         _wfopen_s(&file, path.c_str(), AccessModeToWStr(mode, type));
     }
-#elif ANDROID
+#elif __ANDROID__
     if (Android::IsContentUri(path)) {
         ASSERT_MSG(mode == FileAccessMode::Read, "Content URI file access is for read-only!");
         const auto fd = Android::OpenContentUri(path, Android::OpenMode::Read);
@@ -396,7 +396,7 @@ u64 IOFile::GetSize() const {
     // Flush any unwritten buffered data into the file prior to retrieving the file size.
     std::fflush(file);
 
-#if ANDROID
+#ifdef __ANDROID__
     u64 file_size = 0;
     if (Android::IsContentUri(file_path)) {
         file_size = Android::GetSize(file_path);

src/common/fs/fs.cpp

@@ -6,7 +6,7 @@
 
 #include "common/fs/file.h"
 #include "common/fs/fs.h"
-#ifdef ANDROID
+#ifdef __ANDROID__
 #include "common/fs/fs_android.h"
 #endif
 #include "common/fs/path_util.h"
@@ -532,7 +532,7 @@ void IterateDirEntriesRecursively(const std::filesystem::path& path,
 
 bool Exists(const fs::path& path) {
     std::error_code ec;
-#ifdef ANDROID
+#ifdef __ANDROID__
     if (Android::IsContentUri(path)) {
         return Android::Exists(path);
     } else {
@@ -545,7 +545,7 @@ bool Exists(const fs::path& path) {
 
 bool IsFile(const fs::path& path) {
     std::error_code ec;
-#ifdef ANDROID
+#ifdef __ANDROID__
     if (Android::IsContentUri(path)) {
         return !Android::IsDirectory(path);
     } else {
@@ -558,7 +558,7 @@ bool IsFile(const fs::path& path) {
 
 bool IsDir(const fs::path& path) {
     std::error_code ec;
-#ifdef ANDROID
+#ifdef __ANDROID__
     if (Android::IsContentUri(path)) {
         return Android::IsDirectory(path);
     } else {
@@ -611,7 +611,7 @@ fs::file_type GetEntryType(const fs::path& path) {
 }
 
 u64 GetSize(const fs::path& path) {
-#ifdef ANDROID
+#ifdef __ANDROID__
     if (Android::IsContentUri(path)) {
         return Android::GetSize(path);
     }

src/common/fs/path_util.cpp

@@ -11,7 +11,7 @@
 
 #include "common/assert.h"
 #include "common/fs/fs.h"
-#ifdef ANDROID
+#ifdef __ANDROID__
 #include "common/fs/fs_android.h"
 #endif
 #include "common/fs/fs_paths.h"
@@ -126,7 +126,7 @@ public:
         LEGACY_PATH(Yuzu, YUZU)
         LEGACY_PATH(Suyu, SUYU)
 #undef LEGACY_PATH
-#elif ANDROID
+#elif __ANDROID__
         ASSERT(!eden_path.empty());
         eden_path_cache = eden_path / CACHE_DIR;
         eden_path_config = eden_path / CONFIG_DIR;
@@ -447,11 +447,11 @@ std::vector<std::string> SplitPathComponentsCopy(std::string_view filename) {
 
 std::string SanitizePath(std::string_view path_, DirectorySeparator directory_separator) {
     std::string path(path_);
-#ifdef ANDROID
+#ifdef __ANDROID__
     if (Android::IsContentUri(path)) {
         return path;
     }
-#endif // ANDROID
+#endif // __ANDROID__
 
     char type1 = directory_separator == DirectorySeparator::BackwardSlash ? '/' : '\\';
     char type2 = directory_separator == DirectorySeparator::BackwardSlash ? '\\' : '/';
@@ -482,7 +482,7 @@ std::string GetParentPath(std::string_view path) {
         return std::string(path);
     }
 
-#ifdef ANDROID
+#ifdef __ANDROID__
     if (path[0] != '/') {
         std::string path_string{path};
         return FS::Android::GetParentDirectory(path_string);

src/common/logging.cpp

@@ -320,7 +320,7 @@ struct DebuggerBackend final : public Backend {
     void Flush() noexcept override {}
 };
 #endif
-#ifdef ANDROID
+#ifdef __ANDROID__
 /// @brief Backend that writes to the Android logcat
 struct LogcatBackend : public Backend {
     explicit LogcatBackend() noexcept = default;
@@ -359,7 +359,7 @@ struct Impl {
 #ifdef _WIN32
         lambda(static_cast<Backend&>(debugger_backend));
 #endif
-#ifdef ANDROID
+#ifdef __ANDROID__
         lambda(static_cast<Backend&>(lc_backend));
 #endif
     }
@@ -372,7 +372,7 @@ struct Impl {
 #ifdef _WIN32
     DebuggerBackend debugger_backend{};
 #endif
-#ifdef ANDROID
+#ifdef __ANDROID__
     LogcatBackend lc_backend{};
 #endif
     std::chrono::steady_clock::time_point time_origin{std::chrono::steady_clock::now()};

src/common/settings.h

@@ -359,7 +359,7 @@ struct Values {
                                                     true,
                                                     true};
     SwitchableSetting<int, true> fsr_sharpening_slider{linkage,
-#ifdef ANDROID
+#ifdef __ANDROID__
                                                        0,
 #else
                                                        25,
@@ -417,7 +417,7 @@ struct Values {
                                          linkage, 0, "bg_blue", Category::Renderer, Specialization::Default, true, true};
 
     SwitchableSetting<GpuAccuracy, true> gpu_accuracy{linkage,
-#ifdef ANDROID
+#ifdef __ANDROID__
                                                       GpuAccuracy::Low,
 #else
                                                       GpuAccuracy::Medium,
@@ -447,7 +447,7 @@ struct Values {
                                                       "nvdec_emulation", Category::RendererAdvanced};
 
     SwitchableSetting<AnisotropyMode, true> max_anisotropy{linkage,
-#ifdef ANDROID
+#ifdef __ANDROID__
                                                            AnisotropyMode::Default,
 #else
                                                            AnisotropyMode::Automatic,
@@ -500,7 +500,7 @@ struct Values {
                                                 Category::RendererAdvanced};
 
     SwitchableSetting<bool> use_reactive_flushing{linkage,
-#ifdef ANDROID
+#ifdef __ANDROID__
                                                   false,
 #else
                                                   true,
@@ -519,7 +519,7 @@ struct Values {
                                                   true,
                                                   true};
 
-#ifdef ANDROID
+#ifdef __ANDROID__
     SwitchableSetting<bool> use_optimized_vertex_buffers{linkage,
                                                  false,
                                                  "use_optimized_vertex_buffers",
@@ -553,7 +553,7 @@ struct Values {
                                         true,
                                         true};
     SwitchableSetting<bool> async_presentation{linkage,
-#ifdef ANDROID
+#ifdef __ANDROID__
                                                false,
 #else
                                                false,
@@ -599,7 +599,7 @@ struct Values {
                                                   Category::RendererHacks};
 
     SwitchableSetting<ExtendedDynamicState> dyna_state{linkage,
-#if defined(ANDROID)
+#if defined(__ANDROID__)
                                            ExtendedDynamicState::Disabled,
 #elif defined(__APPLE__)
                                            ExtendedDynamicState::Disabled,
@@ -618,7 +618,7 @@ struct Values {
                                                 Specialization::Scalar};
 
     SwitchableSetting<bool> vertex_input_dynamic_state{linkage,
-#if defined (ANDROID)
+#ifdef __ANDROID__
                                                        false,
 #else
                                                        true,
@@ -634,7 +634,7 @@ struct Values {
                                                     linkage, false, "disable_shader_loop_safety_checks", Category::RendererDebug};
     Setting<bool> enable_renderdoc_hotkey{linkage, false, "renderdoc_hotkey",
                                           Category::RendererDebug};
-#if defined(ANDROID) && defined(ARCHITECTURE_arm64)
+#if defined(__ANDROID__) && defined(ARCHITECTURE_arm64)
     // Debug override for automatic BCn patching detection
     Setting<bool> patch_old_qcom_drivers{linkage, false, "patch_old_qcom_drivers",
                                          Category::RendererDebug};
@@ -679,7 +679,7 @@ struct Values {
     Setting<s32> current_user{linkage, 0, "current_user", Category::System};
 
     SwitchableSetting<ConsoleMode> use_docked_mode{linkage,
-#ifdef ANDROID
+#ifdef __ANDROID__
                                                    ConsoleMode::Handheld,
 #else
                                                    ConsoleMode::Docked,

src/common/string_util.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: 2013 Dolphin Emulator Project
@@ -18,7 +18,7 @@
 #include <windows.h>
 #endif
 
-#ifdef ANDROID
+#ifdef __ANDROID__
 #include <common/fs/fs_android.h>
 #endif
 
@@ -45,7 +45,7 @@ bool SplitPath(const std::string& full_path, std::string* _pPath, std::string* _
     if (full_path.empty())
         return false;
 
-#ifdef ANDROID
+#ifdef __ANDROID__
     if (full_path[0] != '/') {
         *_pPath = Common::FS::Android::GetParentDirectory(full_path);
         *_pFilename = Common::FS::Android::GetFilename(full_path);

src/common/swap.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: 2012 PPSSPP Project
@@ -10,12 +10,10 @@
 
 #pragma once
 
-#if defined(_MSC_VER)
 #include <cstdlib>
-#endif
-#include <bit>
 #include <cstring>
 #include <type_traits>
+#include <bit>
 #include "common/common_types.h"
 
 namespace Common {

src/core/debugger/debugger.cpp

@@ -9,7 +9,7 @@
 #include <boost/asio.hpp>
 #include <boost/version.hpp>
 
-#if BOOST_VERSION > 108400 && (!defined(_WINDOWS) && !defined(ANDROID)) || defined(YUZU_BOOST_v1)
+#if BOOST_VERSION > 108400 && (!defined(_WINDOWS) && !defined(__ANDROID__)) || defined(YUZU_BOOST_v1)
 #define USE_BOOST_v1
 #endif
 
@@ -247,17 +247,19 @@ private:
             case DebuggerAction::Continue:
                 MarkResumed([&] { ResumeEmulation(); });
                 break;
-            case DebuggerAction::StepThreadUnlocked:
-                MarkResumed([&] {
-                    state->active_thread->SetStepState(Kernel::StepState::StepPending);
-                    state->active_thread->Resume(Kernel::SuspendType::Debug);
-                    ResumeEmulation(state->active_thread.GetPointerUnsafe());
+            case DebuggerAction::ContinueThreads: {
+                auto* gdb = static_cast<GDBStub*>(frontend.get());
+                MarkResumed([this, threads = std::move(gdb->resume_threads)] {
+                    ResumeThreads(threads);
                 });
                 break;
-            case DebuggerAction::StepThreadLocked: {
-                MarkResumed([&] {
+            }
+            case DebuggerAction::StepThread: {
+                auto* gdb = static_cast<GDBStub*>(frontend.get());
+                MarkResumed([this, threads = std::move(gdb->resume_threads)] {
                     state->active_thread->SetStepState(Kernel::StepState::StepPending);
                     state->active_thread->Resume(Kernel::SuspendType::Debug);
+                    ResumeThreads(threads, state->active_thread.GetPointerUnsafe());
                 });
                 break;
             }
@@ -298,6 +300,22 @@ private:
         }
     }
 
+    void ResumeThreads(const std::vector<Kernel::KThread*>& threads,
+                       Kernel::KThread* except = nullptr) {
+        Kernel::KScopedLightLock ll{debug_process->GetListLock()};
+        Kernel::KScopedSchedulerLock sl{system.Kernel()};
+
+        // Wake up only the specified threads.
+        for (auto* thread : threads) {
+            if (!thread || thread == except) {
+                continue;
+            }
+
+            thread->SetStepState(Kernel::StepState::NotStepping);
+            thread->Resume(Kernel::SuspendType::Debug);
+        }
+    }
+
     template <typename Callback>
     void MarkResumed(Callback&& cb) {
         stopped = false;

src/core/debugger/debugger_interface.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 2022 yuzu Emulator Project
@@ -20,11 +20,11 @@ struct DebugWatchpoint;
 namespace Core {
 
 enum class DebuggerAction {
-    Interrupt,          ///< Stop emulation as soon as possible.
-    Continue,           ///< Resume emulation.
-    StepThreadLocked,   ///< Step the currently-active thread without resuming others.
-    StepThreadUnlocked, ///< Step the currently-active thread and resume others.
-    ShutdownEmulation,  ///< Shut down the emulator.
+    Interrupt,         ///< Stop emulation as soon as possible.
+    Continue,          ///< Resume emulation.
+    ContinueThreads,   ///< Resume only specific threads (listed in frontend).
+    StepThread,        ///< Step the active thread and resume only threads listed in frontend.
+    ShutdownEmulation, ///< Shut down the emulator.
 };
 
 class DebuggerBackend {

src/core/debugger/gdbstub.cpp

@@ -4,15 +4,15 @@
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+#include <algorithm>
 #include <atomic>
+#include <cctype>
 #include <codecvt>
 #include <locale>
 #include <numeric>
 #include <optional>
 #include <thread>
 
-#include <boost/algorithm/string.hpp>
-
 #include "common/hex_util.h"
 #include "common/logging.h"
 #include "common/scope_exit.h"
@@ -273,10 +273,12 @@ void GDBStub::ExecuteCommand(std::string_view packet, std::vector<DebuggerAction
         break;
     }
     case 's':
-        actions.push_back(DebuggerAction::StepThreadLocked);
+        resume_threads.clear();
+        actions.push_back(DebuggerAction::StepThread);
         break;
     case 'C':
     case 'c':
+        resume_threads.clear();
         actions.push_back(DebuggerAction::Continue);
         break;
     case 'Z':
@@ -467,29 +469,142 @@ void GDBStub::HandleQuery(std::string_view sv) {
 }
 
 void GDBStub::HandleVCont(std::string_view sv, std::vector<DebuggerAction>& actions) {
-    // Continuing and stepping are supported (signal is ignored, but required for GDB to use vCont)
+    // Continuing and stepping are supported (signal is ignored, but required for GDB to use vCont).
+    // Reference: https://sourceware.org/gdb/current/onlinedocs/gdb.html/Packets.html#vCont-packet
     if (sv == "?") {
         SendReply("vCont;c;C;s;S");
-    } else {
-        Kernel::KThread* stepped_thread = nullptr;
-        bool lock_execution = true;
-        std::vector<std::string> entries;
-        boost::split(entries, sv.substr(1), boost::is_any_of(";"));
-        for (auto const& thread_action : entries) {
-            std::vector<std::string> parts;
-            boost::split(parts, thread_action, boost::is_any_of(":"));
-            if (parts.size() == 1 && (parts[0] == "c" || parts[0].starts_with("C")))
-                lock_execution = false;
-            if (parts.size() == 2 && (parts[0] == "s" || parts[0].starts_with("S")))
-                stepped_thread = GetThreadByID(strtoll(parts[1].data(), nullptr, 16));
+        return;
+    }
+    if (sv.empty() || sv.front() != ';') {
+        SendReply(GDB_STUB_REPLY_ERR);
+        return;
+    }
+
+    enum class VContAction {
+        Continue,
+        Step,
+    };
+    struct VContDirective {
+        VContAction action;
+        Kernel::KThread* thread{};
+        bool all_threads{};
+
+        bool Matches(Kernel::KThread* candidate) const {
+            return all_threads || thread == candidate;
+        }
+    };
+
+    const auto is_hex_byte = [](std::string_view value) {
+        return value.size() == 2 && std::isxdigit(static_cast<unsigned char>(value[0])) &&
+               std::isxdigit(static_cast<unsigned char>(value[1]));
+    };
+    const auto is_hex_string = [](std::string_view value) {
+        return std::ranges::all_of(value, [](auto const c) { return std::isxdigit(int(c)); });
+    };
+
+    resume_threads.clear();
+
+    std::vector<VContDirective> directives;
+    std::string_view remaining = sv.substr(1);
+    while (!remaining.empty()) {
+        const auto entry_end = remaining.find(';');
+        const auto entry = remaining.substr(0, entry_end);
+        remaining = entry_end == std::string_view::npos ? std::string_view{} : remaining.substr(entry_end + 1);
+
+        if (entry.empty()) {
+            SendReply(GDB_STUB_REPLY_ERR);
+            return;
         }
 
-        if (stepped_thread) {
-            backend.SetActiveThread(stepped_thread);
-            actions.push_back(lock_execution ? DebuggerAction::StepThreadLocked : DebuggerAction::StepThreadUnlocked);
-        } else {
-            actions.push_back(DebuggerAction::Continue);
+        const auto thread_sep = entry.find(':');
+        const auto action_token = entry.substr(0, thread_sep);
+        const auto thread_token = thread_sep == std::string_view::npos ? std::string_view{} : entry.substr(thread_sep + 1);
+
+        if (action_token.empty()) {
+            SendReply(GDB_STUB_REPLY_ERR);
+            return;
         }
+
+        VContDirective directive;
+        if (action_token == "c") {
+            directive.action = VContAction::Continue;
+        } else if (action_token.front() == 'C' && is_hex_byte(action_token.substr(1))) {
+            directive.action = VContAction::Continue;
+        } else if (action_token == "s") {
+            directive.action = VContAction::Step;
+        } else if (action_token.front() == 'S' && is_hex_byte(action_token.substr(1))) {
+            directive.action = VContAction::Step;
+        } else {
+            SendReply(GDB_STUB_REPLY_ERR);
+            return;
+        }
+
+        if (thread_sep == std::string_view::npos || thread_token == "-1") {
+            directive.all_threads = true;
+        } else if (thread_token == "0") {
+            // A thread-id of 0 selects an arbitrary thread. While stopped, use the
+            // current active thread as that arbitrary choice.
+            directive.thread = backend.GetActiveThread();
+        } else if (thread_token.starts_with('p')) {
+            // We do not currently support multiprocess thread selectors.
+            SendReply(GDB_STUB_REPLY_ERR);
+            return;
+        } else if (is_hex_string(thread_token)) {
+            directive.thread = GetThreadByID(strtoull(std::string(thread_token).c_str(), nullptr, 16));
+        } else {
+            SendReply(GDB_STUB_REPLY_ERR);
+            return;
+        }
+
+        directives.push_back(directive);
+    }
+
+    if (directives.empty()) {
+        SendReply(GDB_STUB_REPLY_ERR);
+        return;
+    }
+
+    // Resolve the packet exactly as specified by the protocol: for each thread,
+    // the leftmost action with a matching thread-id wins.
+    Kernel::KThread* stepped_thread = nullptr;
+    std::vector<Kernel::KThread*> continue_threads;
+    auto& thread_list = debug_process->GetThreadList();
+    for (auto& thread : thread_list) {
+        const auto directive = std::find_if(directives.begin(), directives.end(),
+                                            [&](const VContDirective& candidate) {
+                                                return candidate.Matches(std::addressof(thread));
+                                            });
+        if (directive == directives.end()) {
+            continue;
+        }
+
+        switch (directive->action) {
+        case VContAction::Continue:
+            continue_threads.push_back(std::addressof(thread));
+            break;
+        case VContAction::Step:
+            if (stepped_thread) {
+                // The core can step at most one thread at a time.
+                SendReply(GDB_STUB_REPLY_ERR);
+                return;
+            }
+            stepped_thread = std::addressof(thread);
+            break;
+        }
+    }
+
+    if (stepped_thread) {
+        backend.SetActiveThread(stepped_thread);
+        resume_threads = std::move(continue_threads);
+        actions.push_back(DebuggerAction::StepThread);
+    } else if (continue_threads.size() == thread_list.size()) {
+        actions.push_back(DebuggerAction::Continue);
+    } else if (!continue_threads.empty()) {
+        resume_threads = std::move(continue_threads);
+        actions.push_back(DebuggerAction::ContinueThreads);
+    } else {
+        // A resume packet that leaves all threads stopped is not useful to execute.
+        SendReply(GDB_STUB_REPLY_ERR);
     }
 }
 

src/core/debugger/gdbstub.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 2022 yuzu Emulator Project
@@ -52,6 +52,7 @@ struct GDBStub : public DebuggerFrontend {
     std::unique_ptr<GDBStubArch> arch;
     std::vector<char> current_command;
     std::map<VAddr, u32> replaced_instructions;
+    std::vector<Kernel::KThread*> resume_threads;
     bool no_ack{};
 };
 

src/core/file_sys/vfs/vfs_real.cpp

@@ -23,7 +23,7 @@
 #define stat _stat64
 #endif
 
-#ifdef ANDROID
+#ifdef __ANDROID__
 #include "common/fs/fs_android.h"
 #endif
 
@@ -288,7 +288,7 @@ RealVfsFile::~RealVfsFile() {
 }
 
 std::string RealVfsFile::GetName() const {
-#ifdef ANDROID
+#ifdef __ANDROID__
     if (path[0] != '/') {
         return FS::Android::GetFilename(path);
     }

src/core/tools/renderdoc.cpp

@@ -31,7 +31,7 @@ RenderdocAPI::RenderdocAPI() {
 #elif defined(__HAIKU__)
     // no rtld on haiku
 #else
-#ifdef ANDROID
+#ifdef __ANDROID__
     static constexpr const char RENDERDOC_LIB[] = "libVkLayer_GLES_RenderDoc.so";
 #else
     static constexpr const char RENDERDOC_LIB[] = "librenderdoc.so";

src/dynarmic/src/dynarmic/CMakeLists.txt

@@ -299,10 +299,24 @@ if ("loongarch64" IN_LIST ARCHITECTURE)
     target_link_libraries(dynarmic PRIVATE lagoon::lagoon)
 
     target_sources(dynarmic PRIVATE
-        backend/loongarch64/exclusive_monitor.cpp
+        backend/loongarch64/abi.h
+        backend/loongarch64/a32_jitstate.cpp
+        backend/loongarch64/a32_jitstate.h
+        backend/loongarch64/code_block.h
+        backend/loongarch64/emit_context.h
+        backend/loongarch64/emit_loongarch64.cpp
+        backend/loongarch64/emit_loongarch64.h
+        backend/loongarch64/emit_loongarch64_a32.cpp
+        backend/loongarch64/emit_loongarch64_data_processing.cpp
+        backend/loongarch64/a32_address_space.cpp
+        backend/loongarch64/a32_address_space.h
         backend/loongarch64/a32_interface.cpp
         backend/loongarch64/a64_interface.cpp
-        backend/loongarch64/code_block.h
+        backend/loongarch64/exclusive_monitor.cpp
+        backend/loongarch64/reg_alloc.cpp
+        backend/loongarch64/reg_alloc.h
+        backend/loongarch64/stack_layout.h
+        backend/loongarch64/lagoon_cpp.h
 
         common/spin_lock_loongarch64.cpp
     )

src/dynarmic/src/dynarmic/backend/loongarch64/a32_address_space.cpp

@@ -0,0 +1,123 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "dynarmic/backend/loongarch64/a32_address_space.h"
+
+#include "common/assert.h"
+
+#include "dynarmic/backend/loongarch64/a32_jitstate.h"
+#include "dynarmic/backend/loongarch64/abi.h"
+#include "dynarmic/backend/loongarch64/emit_loongarch64.h"
+#include "dynarmic/frontend/A32/a32_location_descriptor.h"
+#include "dynarmic/frontend/A32/translate/a32_translate.h"
+#include "dynarmic/ir/opt_passes.h"
+
+namespace Dynarmic::Backend::LoongArch64 {
+
+A32AddressSpace::A32AddressSpace(const A32::UserConfig& conf)
+        : conf(conf)
+        , cb(conf.code_cache_size) {
+    EmitPrelude();
+}
+
+void A32AddressSpace::GenerateIR(IR::Block& ir_block, IR::LocationDescriptor descriptor) const {
+    A32::Translate(ir_block, A32::LocationDescriptor{descriptor}, conf.callbacks, {conf.arch_version, conf.define_unpredictable_behaviour, conf.hook_hint_instructions});
+    Optimization::Optimize(ir_block, conf, {.sha256 = true});
+}
+
+CodePtr A32AddressSpace::Get(IR::LocationDescriptor descriptor) {
+    if (const auto iter = block_entries.find(descriptor.Value()); iter != block_entries.end()) {
+        return iter->second;
+    }
+    return nullptr;
+}
+
+CodePtr A32AddressSpace::GetOrEmit(IR::LocationDescriptor descriptor) {
+    if (CodePtr block_entry = Get(descriptor)) {
+        return block_entry;
+    }
+
+    IR::Block ir_block{descriptor};
+    GenerateIR(ir_block, descriptor);
+    const EmittedBlockInfo block_info = Emit(std::move(ir_block));
+
+    block_infos.insert_or_assign(descriptor.Value(), block_info);
+    block_entries.insert_or_assign(descriptor.Value(), block_info.entry_point);
+    return block_info.entry_point;
+}
+
+void A32AddressSpace::ClearCache() {
+    block_entries.clear();
+    block_infos.clear();
+    SetCursorPtr(prelude_info.end_of_prelude);
+}
+
+void A32AddressSpace::EmitPrelude() {
+    prelude_info.run_code = GetCursorPtr<PreludeInfo::RunCodeFuncType>();
+
+    // Save all GPRs except sp (r3) and tp (r2)
+    la_addi_d(&cb.as, LA_SP, LA_SP, -64 * 8);
+    for (u32 i = 1; i < 32; i++) {
+        if (i == LA_SP || i == LA_TP)
+            continue;
+        la_st_d(&cb.as, static_cast<la_gpr_t>(i), LA_SP, static_cast<int32_t>(i * 8));
+    }
+
+    // Set up reserved registers and jump to block entry
+    la_move(&cb.as, Xstate, LA_A1);  // Xstate = state ptr
+    la_move(&cb.as, Xhalt, LA_A2);   // Xhalt  = halt reason ptr
+    la_jr(&cb.as, LA_A0);            // jump to block_entry
+
+    prelude_info.return_from_run_code = GetCursorPtr<CodePtr>();
+
+    // Restore all GPRs except sp and tp
+    for (u32 i = 1; i < 32; i++) {
+        if (i == LA_SP || i == LA_TP)
+            continue;
+        la_ld_d(&cb.as, static_cast<la_gpr_t>(i), LA_SP, static_cast<int32_t>(i * 8));
+    }
+    la_addi_d(&cb.as, LA_SP, LA_SP, 64 * 8);
+    la_ret(&cb.as);
+
+    prelude_info.end_of_prelude = GetCursorPtr<CodePtr>();
+}
+
+void A32AddressSpace::SetCursorPtr(CodePtr ptr) {
+    cb.as.cursor = reinterpret_cast<uint8_t*>(ptr);
+}
+
+size_t A32AddressSpace::GetRemainingSize() {
+    return la_get_remaining_buffer_size(&cb.as);
+}
+
+EmittedBlockInfo A32AddressSpace::Emit(IR::Block block) {
+    if (GetRemainingSize() < 1024 * 1024) {
+        ClearCache();
+    }
+
+    EmitConfig emit_conf{};
+    EmittedBlockInfo block_info = EmitLoongArch64(cb.as, std::move(block), emit_conf);
+    Link(block_info);
+
+    return block_info;
+}
+
+void A32AddressSpace::Link(EmittedBlockInfo& block_info) {
+    for (const auto& reloc : block_info.relocations) {
+        uint8_t* patch_location = reinterpret_cast<uint8_t*>(block_info.entry_point) + reloc.code_offset;
+
+        switch (reloc.target) {
+        case LinkTarget::ReturnFromRunCode: {
+            std::ptrdiff_t off = reinterpret_cast<uint8_t*>(prelude_info.return_from_run_code) - patch_location;
+            lagoon_assembler_t patch_as;
+            la_init_assembler(&patch_as, patch_location, 4);
+            la_b(&patch_as, static_cast<int32_t>(off));
+            break;
+        }
+        default:
+            ASSERT(false && "Invalid relocation target");
+        }
+    }
+}
+
+}  // namespace Dynarmic::Backend::LoongArch64

src/dynarmic/src/dynarmic/backend/loongarch64/a32_address_space.h

@@ -0,0 +1,68 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include "dynarmic/backend/loongarch64/lagoon_cpp.h"
+#include <ankerl/unordered_dense.h>
+
+#include "dynarmic/backend/loongarch64/code_block.h"
+#include "dynarmic/backend/loongarch64/emit_loongarch64.h"
+#include "dynarmic/interface/A32/config.h"
+#include "dynarmic/interface/halt_reason.h"
+#include "dynarmic/ir/basic_block.h"
+#include "dynarmic/ir/location_descriptor.h"
+
+namespace Dynarmic::Backend::LoongArch64 {
+
+struct A32JitState;
+
+class A32AddressSpace final {
+public:
+    explicit A32AddressSpace(const A32::UserConfig& conf);
+
+    void GenerateIR(IR::Block& ir_block, IR::LocationDescriptor descriptor) const;
+    CodePtr Get(IR::LocationDescriptor descriptor);
+    CodePtr GetOrEmit(IR::LocationDescriptor descriptor);
+
+    void ClearCache();
+
+private:
+    void EmitPrelude();
+
+    template<typename T>
+    T GetCursorPtr() {
+        return reinterpret_cast<T>(cb.as.cursor);
+    }
+
+    template<typename T>
+    T GetCursorPtr() const {
+        return reinterpret_cast<T>(cb.as.cursor);
+    }
+
+    template<typename T>
+    T GetMemPtr() const {
+        return cb.ptr<T>();
+    }
+
+    void SetCursorPtr(CodePtr ptr);
+    size_t GetRemainingSize();
+    EmittedBlockInfo Emit(IR::Block block);
+    void Link(EmittedBlockInfo& block_info);
+
+    const A32::UserConfig conf;
+    CodeBlock cb;
+
+    ankerl::unordered_dense::map<u64, CodePtr> block_entries;
+    ankerl::unordered_dense::map<u64, EmittedBlockInfo> block_infos;
+
+public:
+    struct PreludeInfo {
+        CodePtr end_of_prelude;
+        using RunCodeFuncType = HaltReason (*)(CodePtr entry_point, A32JitState* context, volatile u32* halt_reason);
+        RunCodeFuncType run_code;
+        CodePtr return_from_run_code;
+    } prelude_info;
+};
+
+}  // namespace Dynarmic::Backend::LoongArch64

src/dynarmic/src/dynarmic/backend/loongarch64/a32_interface.cpp

@@ -1,101 +1,134 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#include <array>
 #include <memory>
-#include <string>
-#include <utility>
+#include <mutex>
 
+#include <boost/icl/interval_set.hpp>
 #include "common/assert.h"
 #include "common/common_types.h"
+
+#include "dynarmic/backend/loongarch64/a32_address_space.h"
+#include "dynarmic/backend/loongarch64/a32_jitstate.h"
+#include "dynarmic/common/atomic.h"
+#include "dynarmic/frontend/A32/a32_location_descriptor.h"
 #include "dynarmic/interface/A32/a32.h"
 
 namespace Dynarmic::A32 {
 
+using namespace Backend::LoongArch64;
+
 struct Jit::Impl final {
-    explicit Impl(UserConfig conf_) : conf(std::move(conf_)) {}
+    Impl(Jit* jit_interface, A32::UserConfig conf)
+            : jit_interface(jit_interface)
+            , conf(conf)
+            , current_address_space(conf) {}
 
     HaltReason Run() {
-        UNIMPLEMENTED();
-        return halt_reason;
+        ASSERT(!jit_interface->is_executing);
+        jit_interface->is_executing = true;
+
+        const auto location_descriptor = current_state.GetLocationDescriptor();
+        const auto entry_point = current_address_space.GetOrEmit(location_descriptor);
+        current_address_space.prelude_info.run_code(entry_point, &current_state, &halt_reason);
+
+        HaltReason hr = static_cast<HaltReason>(Atomic::Exchange(&halt_reason, 0));
+        jit_interface->is_executing = false;
+        return hr;
     }
 
     HaltReason Step() {
-        UNIMPLEMENTED();
-        return halt_reason | HaltReason::Step;
+        ASSERT(!jit_interface->is_executing);
+        jit_interface->is_executing = true;
+
+        const auto location_descriptor = A32::LocationDescriptor{current_state.GetLocationDescriptor()}.SetSingleStepping(true);
+        const auto entry_point = current_address_space.GetOrEmit(location_descriptor);
+        current_address_space.prelude_info.run_code(entry_point, &current_state, &halt_reason);
+
+        HaltReason hr = static_cast<HaltReason>(Atomic::Exchange(&halt_reason, 0));
+        jit_interface->is_executing = false;
+        return hr;
     }
 
     void ClearCache() {
+        std::unique_lock lock{invalidation_mutex};
+        invalidate_entire_cache = true;
         HaltExecution(HaltReason::CacheInvalidation);
     }
 
-    void InvalidateCacheRange(u32, std::size_t) {
+    void InvalidateCacheRange(u32 start_address, size_t length) {
+        std::unique_lock lock{invalidation_mutex};
+        invalid_cache_ranges.add(boost::icl::discrete_interval<u32>::closed(start_address, static_cast<u32>(start_address + length - 1)));
         HaltExecution(HaltReason::CacheInvalidation);
     }
 
     void Reset() {
-        regs = {};
-        ext_regs = {};
-        cpsr = 0;
-        fpscr = 0;
-        halt_reason = {};
+        current_state = {};
     }
 
     void HaltExecution(HaltReason hr) {
-        halt_reason |= hr;
+        Atomic::Or(&halt_reason, static_cast<u32>(hr));
     }
 
     void ClearHalt(HaltReason hr) {
-        halt_reason &= ~hr;
+        Atomic::And(&halt_reason, ~static_cast<u32>(hr));
     }
 
     std::array<u32, 16>& Regs() {
-        return regs;
+        return current_state.regs;
     }
 
     const std::array<u32, 16>& Regs() const {
-        return regs;
+        return current_state.regs;
     }
 
     std::array<u32, 64>& ExtRegs() {
-        return ext_regs;
+        return current_state.ext_regs;
     }
 
     const std::array<u32, 64>& ExtRegs() const {
-        return ext_regs;
+        return current_state.ext_regs;
     }
 
     u32 Cpsr() const {
-        return cpsr;
+        return current_state.Cpsr();
     }
 
     void SetCpsr(u32 value) {
-        cpsr = value;
+        current_state.SetCpsr(value);
     }
 
     u32 Fpscr() const {
-        return fpscr;
+        return current_state.Fpscr();
     }
 
     void SetFpscr(u32 value) {
-        fpscr = value;
+        current_state.SetFpscr(value);
     }
 
-    void ClearExclusiveState() {}
+    void ClearExclusiveState() {
+        current_state.exclusive_state = false;
+    }
 
     std::string Disassemble() const {
         return {};
     }
 
-    UserConfig conf;
-    std::array<u32, 16> regs{};
-    std::array<u32, 64> ext_regs{};
-    u32 cpsr = 0;
-    u32 fpscr = 0;
-    HaltReason halt_reason{};
+private:
+    Jit* jit_interface;
+    A32::UserConfig conf;
+    A32JitState current_state{};
+    A32AddressSpace current_address_space;
+
+    volatile u32 halt_reason = 0;
+
+    std::mutex invalidation_mutex;
+    boost::icl::interval_set<u32> invalid_cache_ranges;
+    bool invalidate_entire_cache = false;
 };
 
-Jit::Jit(UserConfig conf) : impl(std::make_unique<Impl>(std::move(conf))) {}
+Jit::Jit(UserConfig conf)
+        : impl(std::make_unique<Impl>(this, conf)) {}
 
 Jit::~Jit() = default;
 
@@ -111,7 +144,7 @@ void Jit::ClearCache() {
     impl->ClearCache();
 }
 
-void Jit::InvalidateCacheRange(u32 start_address, std::size_t length) {
+void Jit::InvalidateCacheRange(u32 start_address, size_t length) {
     impl->InvalidateCacheRange(start_address, length);
 }
 

src/dynarmic/src/dynarmic/backend/loongarch64/a32_jitstate.cpp

@@ -0,0 +1,57 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "dynarmic/backend/loongarch64/a32_jitstate.h"
+
+#include "dynarmic/mcl/bit.hpp"
+#include "common/common_types.h"
+
+namespace Dynarmic::Backend::LoongArch64 {
+
+u32 A32JitState::Cpsr() const {
+    u32 cpsr = 0;
+    cpsr |= cpsr_nzcv;
+    cpsr |= cpsr_q;
+    cpsr |= mcl::bit::get_bit<31>(cpsr_ge) ? 1 << 19 : 0;
+    cpsr |= mcl::bit::get_bit<23>(cpsr_ge) ? 1 << 18 : 0;
+    cpsr |= mcl::bit::get_bit<15>(cpsr_ge) ? 1 << 17 : 0;
+    cpsr |= mcl::bit::get_bit<7>(cpsr_ge) ? 1 << 16 : 0;
+    cpsr |= mcl::bit::get_bit<1>(upper_location_descriptor) ? 1 << 9 : 0;
+    cpsr |= mcl::bit::get_bit<0>(upper_location_descriptor) ? 1 << 5 : 0;
+    cpsr |= static_cast<u32>(upper_location_descriptor & 0b11111100'00000000);
+    cpsr |= static_cast<u32>(upper_location_descriptor & 0b00000011'00000000) << 17;
+    cpsr |= cpsr_jaifm;
+    return cpsr;
+}
+
+void A32JitState::SetCpsr(u32 cpsr) {
+    cpsr_nzcv = cpsr & 0xF0000000;
+    cpsr_q = cpsr & (1 << 27);
+    cpsr_ge = 0;
+    cpsr_ge |= mcl::bit::get_bit<19>(cpsr) ? 0xFF000000 : 0;
+    cpsr_ge |= mcl::bit::get_bit<18>(cpsr) ? 0x00FF0000 : 0;
+    cpsr_ge |= mcl::bit::get_bit<17>(cpsr) ? 0x0000FF00 : 0;
+    cpsr_ge |= mcl::bit::get_bit<16>(cpsr) ? 0x000000FF : 0;
+
+    upper_location_descriptor &= 0xFFFF0000;
+    upper_location_descriptor |= mcl::bit::get_bit<9>(cpsr) ? 2 : 0;
+    upper_location_descriptor |= mcl::bit::get_bit<5>(cpsr) ? 1 : 0;
+    upper_location_descriptor |= (cpsr >> 0) & 0b11111100'00000000;
+    upper_location_descriptor |= (cpsr >> 17) & 0b00000011'00000000;
+    cpsr_jaifm = cpsr & 0x010001DF;
+}
+
+constexpr u32 FPCR_MASK = A32::LocationDescriptor::FPSCR_MODE_MASK;
+constexpr u32 FPSR_MASK = 0x0800009F;
+
+u32 A32JitState::Fpscr() const {
+    return (upper_location_descriptor & FPCR_MASK) | fpsr | fpsr_nzcv;
+}
+
+void A32JitState::SetFpscr(u32 fpscr) {
+    fpsr = fpscr & FPSR_MASK;
+    fpsr_nzcv = fpscr & 0xF0000000;
+    upper_location_descriptor = (upper_location_descriptor & 0x0000ffff) | (fpscr & FPCR_MASK);
+}
+
+}  // namespace Dynarmic::Backend::LoongArch64

src/dynarmic/src/dynarmic/backend/loongarch64/a32_jitstate.h

@@ -0,0 +1,43 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <array>
+
+#include "common/common_types.h"
+
+#include "dynarmic/frontend/A32/a32_location_descriptor.h"
+#include "dynarmic/ir/location_descriptor.h"
+
+namespace Dynarmic::Backend::LoongArch64 {
+
+struct A32JitState {
+    u32 cpsr_nzcv = 0;
+    u32 cpsr_q = 0;
+    u32 cpsr_jaifm = 0;
+    u32 cpsr_ge = 0;
+
+    u32 fpsr = 0;
+    u32 fpsr_nzcv = 0;
+
+    std::array<u32, 16> regs{};
+
+    u32 upper_location_descriptor;
+
+    alignas(16) std::array<u32, 64> ext_regs{};
+
+    u32 exclusive_state = 0;
+
+    u32 Cpsr() const;
+    void SetCpsr(u32 cpsr);
+
+    u32 Fpscr() const;
+    void SetFpscr(u32 fpscr);
+
+    IR::LocationDescriptor GetLocationDescriptor() const {
+        return IR::LocationDescriptor{regs[15] | (static_cast<u64>(upper_location_descriptor) << 32)};
+    }
+};
+
+}  // namespace Dynarmic::Backend::LoongArch64

src/dynarmic/src/dynarmic/backend/loongarch64/abi.h

@@ -0,0 +1,39 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <initializer_list>
+
+#include "dynarmic/backend/loongarch64/lagoon_cpp.h"
+
+#include "common/common_types.h"
+
+namespace Dynarmic::Backend::LoongArch64 {
+
+// Reserved registers used by the dynarmic JIT
+// Xstate (s0/r23): pointer to JIT CPU state, callee-saved
+// Xhalt  (s1/r24): halt reason pointer, callee-saved
+// Xscratch0 (t7/r19): scratch register (caller-saved)
+// Xscratch1 (t8/r20): scratch register (caller-saved)
+constexpr la_gpr_t Xstate    = LA_S0;   // r23
+constexpr la_gpr_t Xhalt     = LA_S1;   // r24
+constexpr la_gpr_t Xscratch0 = LA_T7;   // r19
+constexpr la_gpr_t Xscratch1 = LA_T8;   // r20
+
+// GPR allocation order: callee-saved (s2-s8) first, then temps, then args
+constexpr std::initializer_list<u32> GPR_ORDER{
+    25, 26, 27, 28, 29, 30, 31,   // s2-s8 (r25-r31)
+    12, 13, 14, 15, 16, 17, 18,   // t0-t6 (r12-r18)
+    4,  5,  6,  7,  8,  9, 10, 11 // a0-a7 (r4-r11)
+};
+
+// FPR allocation order: callee-saved (fs0-fs7) first, then ft, then fa
+constexpr std::initializer_list<u32> FPR_ORDER{
+    24, 25, 26, 27, 28, 29, 30, 31,   // fs0-fs7 (f24-f31)
+    8,  9, 10, 11, 12, 13, 14, 15,    // ft0-ft7 (f8-f15)
+    16, 17, 18, 19, 20, 21, 22, 23,   // ft8-ft15 (f16-f23)
+    0,  1,  2,  3,  4,  5,  6,  7    // fa0-fa7 (f0-f7)
+};
+
+}  // namespace Dynarmic::Backend::LoongArch64

src/dynarmic/src/dynarmic/backend/loongarch64/code_block.h

@@ -4,20 +4,44 @@
 #pragma once
 
 #include <cstdint>
+#include <new>
+#include <type_traits>
 
+#include <sys/mman.h>
+#include "dynarmic/backend/loongarch64/lagoon_cpp.h"
+
+#include "common/assert.h"
 #include "common/common_types.h"
 
 namespace Dynarmic::Backend::LoongArch64 {
 
 class CodeBlock {
 public:
+    explicit CodeBlock(std::size_t size) noexcept
+            : memsize(size) {
+        mem = static_cast<u8*>(mmap(nullptr, size, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANON | MAP_PRIVATE, -1, 0));
+        ASSERT(mem != MAP_FAILED);
+        la_init_assembler(&as, mem, size);
+    }
+
+    ~CodeBlock() noexcept {
+        if (mem == nullptr) {
+            return;
+        }
+        munmap(mem, memsize);
+    }
+
     template<typename T>
     T ptr() const noexcept {
+        static_assert(std::is_pointer_v<T> || std::is_same_v<T, std::uintptr_t> || std::is_same_v<T, std::intptr_t>);
         return reinterpret_cast<T>(mem);
     }
 
+    lagoon_assembler_t as{};
+
 private:
     u8* mem = nullptr;
+    size_t memsize = 0;
 };
 
 }  // namespace Dynarmic::Backend::LoongArch64

src/dynarmic/src/dynarmic/backend/loongarch64/emit_context.h

@@ -0,0 +1,24 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include "dynarmic/backend/loongarch64/emit_loongarch64.h"
+#include "dynarmic/backend/loongarch64/reg_alloc.h"
+
+namespace Dynarmic::IR {
+class Block;
+}  // namespace Dynarmic::IR
+
+namespace Dynarmic::Backend::LoongArch64 {
+
+struct EmitConfig;
+
+struct EmitContext {
+    IR::Block& block;
+    RegAlloc& reg_alloc;
+    const EmitConfig& emit_conf;
+    EmittedBlockInfo& ebi;
+};
+
+}  // namespace Dynarmic::Backend::LoongArch64

src/dynarmic/src/dynarmic/backend/loongarch64/emit_loongarch64.cpp

@@ -0,0 +1,113 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "dynarmic/backend/loongarch64/emit_loongarch64.h"
+
+#include "dynarmic/backend/loongarch64/a32_jitstate.h"
+#include "dynarmic/backend/loongarch64/abi.h"
+#include "dynarmic/backend/loongarch64/emit_context.h"
+#include "dynarmic/backend/loongarch64/reg_alloc.h"
+#include "dynarmic/ir/basic_block.h"
+#include "dynarmic/ir/microinstruction.h"
+#include "dynarmic/ir/opcodes.h"
+
+namespace Dynarmic::Backend::LoongArch64 {
+
+template<IR::Opcode op>
+void EmitIR(lagoon_assembler_t&, EmitContext&, IR::Inst*) {
+    ASSERT(false && "Unimplemented opcode");
+}
+
+template<>
+void EmitIR<IR::Opcode::Void>(lagoon_assembler_t&, EmitContext&, IR::Inst*) {}
+
+template<>
+void EmitIR<IR::Opcode::A32GetRegister>(lagoon_assembler_t&, EmitContext& ctx, IR::Inst* inst);
+
+template<>
+void EmitIR<IR::Opcode::A32SetRegister>(lagoon_assembler_t&, EmitContext& ctx, IR::Inst* inst);
+
+template<>
+void EmitIR<IR::Opcode::A32SetCpsrNZC>(lagoon_assembler_t&, EmitContext& ctx, IR::Inst* inst);
+
+template<>
+void EmitIR<IR::Opcode::LogicalShiftLeft32>(lagoon_assembler_t&, EmitContext& ctx, IR::Inst* inst);
+
+template<>
+void EmitIR<IR::Opcode::GetCarryFromOp>(lagoon_assembler_t&, EmitContext& ctx, IR::Inst* inst) {
+    ASSERT(ctx.reg_alloc.IsValueLive(inst));
+}
+
+template<>
+void EmitIR<IR::Opcode::GetNZFromOp>(lagoon_assembler_t& as, EmitContext& ctx, IR::Inst* inst) {
+    auto args = ctx.reg_alloc.GetArgumentInfo(inst);
+
+    auto Xvalue = ctx.reg_alloc.ReadX(args[0]);
+    auto Xnz = ctx.reg_alloc.WriteX(inst);
+    RegAlloc::Realize(Xvalue, Xnz);
+
+    // Z flag (bit 30): set if value == 0
+    la_sltui(&as, Xnz->index, Xvalue->index, 1);
+    la_slli_d(&as, Xnz->index, Xnz->index, 30);
+    // N flag (bit 31): set if value < 0 (signed)
+    la_slt(&as, Xscratch0, Xvalue->index, LA_ZERO);
+    la_slli_d(&as, Xscratch0, Xscratch0, 31);
+    la_or(&as, Xnz->index, Xnz->index, Xscratch0);
+}
+
+EmittedBlockInfo EmitLoongArch64(lagoon_assembler_t& as, IR::Block block, const EmitConfig& emit_conf) {
+    EmittedBlockInfo ebi;
+
+    RegAlloc reg_alloc{as, std::vector<u32>(GPR_ORDER), std::vector<u32>(FPR_ORDER)};
+    EmitContext ctx{block, reg_alloc, emit_conf, ebi};
+
+    ebi.entry_point = reinterpret_cast<CodePtr>(as.cursor);
+
+    for (auto iter = block.instructions.begin(); iter != block.instructions.end(); ++iter) {
+        IR::Inst* inst = &*iter;
+
+        switch (inst->GetOpcode()) {
+#define OPCODE(name, type, ...)                            \
+    case IR::Opcode::name:                                 \
+        EmitIR<IR::Opcode::name>(as, ctx, inst);           \
+        break;
+#define A32OPC(name, type, ...)                                 \
+    case IR::Opcode::A32##name:                                 \
+        EmitIR<IR::Opcode::A32##name>(as, ctx, inst);           \
+        break;
+#define A64OPC(name, type, ...)                                 \
+    case IR::Opcode::A64##name:                                 \
+        EmitIR<IR::Opcode::A64##name>(as, ctx, inst);           \
+        break;
+#include "dynarmic/ir/opcodes.inc"
+#undef OPCODE
+#undef A32OPC
+#undef A64OPC
+        default:
+            UNREACHABLE();
+        }
+
+        reg_alloc.UpdateAllUses();
+    }
+
+    reg_alloc.UpdateAllUses();
+    reg_alloc.AssertNoMoreUses();
+
+    // TODO: Emit Terminal
+    const auto term = block.GetTerminal();
+    const IR::Term::LinkBlock* link_block_term = boost::get<IR::Term::LinkBlock>(&term);
+    ASSERT(link_block_term);
+    la_load_immediate64(&as, Xscratch0, link_block_term->next.Value());
+    la_st_w(&as, Xscratch0, Xstate, static_cast<int32_t>(offsetof(A32JitState, regs) + sizeof(u32) * 15));
+
+    ebi.relocations.push_back(Relocation{
+        reinterpret_cast<CodePtr>(as.cursor) - ebi.entry_point,
+        LinkTarget::ReturnFromRunCode
+    });
+    la_nop(&as);
+
+    ebi.size = reinterpret_cast<CodePtr>(as.cursor) - ebi.entry_point;
+    return ebi;
+}
+
+}  // namespace Dynarmic::Backend::LoongArch64

src/dynarmic/src/dynarmic/backend/loongarch64/emit_loongarch64.h

@@ -0,0 +1,55 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <array>
+#include <cstddef>
+#include <vector>
+
+#include "dynarmic/backend/loongarch64/lagoon_cpp.h"
+
+#include "common/common_types.h"
+
+namespace Dynarmic::IR {
+class Block;
+class Inst;
+class LocationDescriptor;
+enum class Cond;
+enum class Opcode;
+}  // namespace Dynarmic::IR
+
+namespace Dynarmic::A32 {
+class Coprocessor;
+}  // namespace Dynarmic::A32
+
+namespace Dynarmic::Backend::LoongArch64 {
+
+using CodePtr = std::byte*;
+
+enum class LinkTarget {
+    ReturnFromRunCode,
+};
+
+struct Relocation {
+    std::ptrdiff_t code_offset;
+    LinkTarget target;
+};
+
+struct EmittedBlockInfo {
+    std::vector<Relocation> relocations;
+    CodePtr entry_point;
+    size_t size;
+    size_t cycle_count;
+};
+
+struct EmitConfig {};
+
+struct EmitContext;
+
+template<IR::Opcode op>
+void EmitIR(lagoon_assembler_t& as, EmitContext& ctx, IR::Inst* inst);
+
+EmittedBlockInfo EmitLoongArch64(lagoon_assembler_t& as, IR::Block block, const EmitConfig& emit_conf);
+
+}  // namespace Dynarmic::Backend::LoongArch64

src/dynarmic/src/dynarmic/backend/loongarch64/emit_loongarch64_a32.cpp

@@ -0,0 +1,59 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "dynarmic/backend/loongarch64/lagoon_cpp.h"
+
+#include "dynarmic/backend/loongarch64/a32_jitstate.h"
+#include "dynarmic/backend/loongarch64/abi.h"
+#include "dynarmic/backend/loongarch64/emit_context.h"
+#include "dynarmic/backend/loongarch64/emit_loongarch64.h"
+#include "dynarmic/backend/loongarch64/reg_alloc.h"
+#include "dynarmic/ir/basic_block.h"
+#include "dynarmic/ir/microinstruction.h"
+#include "dynarmic/ir/opcodes.h"
+
+namespace Dynarmic::Backend::LoongArch64 {
+
+template<>
+void EmitIR<IR::Opcode::A32GetRegister>(lagoon_assembler_t& as, EmitContext& ctx, IR::Inst* inst) {
+    const A32::Reg reg = inst->GetArg(0).GetA32RegRef();
+
+    auto Xresult = ctx.reg_alloc.WriteX(inst);
+    RegAlloc::Realize(Xresult);
+
+    la_ld_wu(&as, Xresult->index, Xstate,
+             static_cast<int32_t>(offsetof(A32JitState, regs) + sizeof(u32) * static_cast<size_t>(reg)));
+}
+
+template<>
+void EmitIR<IR::Opcode::A32SetRegister>(lagoon_assembler_t& as, EmitContext& ctx, IR::Inst* inst) {
+    const A32::Reg reg = inst->GetArg(0).GetA32RegRef();
+
+    auto args = ctx.reg_alloc.GetArgumentInfo(inst);
+    auto Xvalue = ctx.reg_alloc.ReadX(args[1]);
+    RegAlloc::Realize(Xvalue);
+
+    la_st_w(&as, Xvalue->index, Xstate,
+            static_cast<int32_t>(offsetof(A32JitState, regs) + sizeof(u32) * static_cast<size_t>(reg)));
+}
+
+template<>
+void EmitIR<IR::Opcode::A32SetCpsrNZC>(lagoon_assembler_t& as, EmitContext& ctx, IR::Inst* inst) {
+    auto args = ctx.reg_alloc.GetArgumentInfo(inst);
+
+    ASSERT(!args[0].IsImmediate() && !args[1].IsImmediate());
+
+    auto Xnz = ctx.reg_alloc.ReadX(args[0]);
+    auto Xc = ctx.reg_alloc.ReadX(args[1]);
+    RegAlloc::Realize(Xnz, Xc);
+
+    la_ld_wu(&as, Xscratch0, Xstate, static_cast<int32_t>(offsetof(A32JitState, cpsr_nzcv)));
+    la_load_immediate64(&as, Xscratch1, 0x10000000);
+    la_and(&as, Xscratch0, Xscratch0, Xscratch1);
+    la_or(&as, Xscratch0, Xscratch0, Xnz->index);
+    la_slli_w(&as, Xscratch1, Xc->index, 29);
+    la_or(&as, Xscratch0, Xscratch0, Xscratch1);
+    la_st_w(&as, Xscratch0, Xstate, static_cast<int32_t>(offsetof(A32JitState, cpsr_nzcv)));
+}
+
+}  // namespace Dynarmic::Backend::LoongArch64

src/dynarmic/src/dynarmic/backend/loongarch64/emit_loongarch64_data_processing.cpp

@@ -0,0 +1,52 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "dynarmic/backend/loongarch64/lagoon_cpp.h"
+
+#include "dynarmic/backend/loongarch64/abi.h"
+#include "dynarmic/backend/loongarch64/emit_context.h"
+#include "dynarmic/backend/loongarch64/emit_loongarch64.h"
+#include "dynarmic/backend/loongarch64/reg_alloc.h"
+#include "dynarmic/ir/basic_block.h"
+#include "dynarmic/ir/microinstruction.h"
+#include "dynarmic/ir/opcodes.h"
+
+namespace Dynarmic::Backend::LoongArch64 {
+
+template<>
+void EmitIR<IR::Opcode::LogicalShiftLeft32>(lagoon_assembler_t& as, EmitContext& ctx, IR::Inst* inst) {
+    const auto carry_inst = inst->GetAssociatedPseudoOperation(IR::Opcode::GetCarryFromOp);
+
+    auto args = ctx.reg_alloc.GetArgumentInfo(inst);
+    auto& operand_arg = args[0];
+    auto& shift_arg = args[1];
+    auto& carry_arg = args[2];
+
+    ASSERT(carry_inst != nullptr);
+    ASSERT(shift_arg.IsImmediate());
+
+    auto Xresult = ctx.reg_alloc.WriteX(inst);
+    auto Xcarry_out = ctx.reg_alloc.WriteX(carry_inst);
+    auto Xoperand = ctx.reg_alloc.ReadX(operand_arg);
+    auto Xcarry_in = ctx.reg_alloc.ReadX(carry_arg);
+    RegAlloc::Realize(Xresult, Xcarry_out, Xoperand, Xcarry_in);
+
+    const u8 shift = shift_arg.GetImmediateU8();
+
+    if (shift == 0) {
+        la_addi_w(&as, Xresult->index, Xoperand->index, 0);
+        la_addi_w(&as, Xcarry_out->index, Xcarry_in->index, 0);
+    } else if (shift < 32) {
+        la_srli_w(&as, Xcarry_out->index, Xoperand->index, 32 - shift);
+        la_andi(&as, Xcarry_out->index, Xcarry_out->index, 1);
+        la_slli_w(&as, Xresult->index, Xoperand->index, shift);
+    } else if (shift > 32) {
+        la_move(&as, Xresult->index, LA_ZERO);
+        la_move(&as, Xcarry_out->index, LA_ZERO);
+    } else {
+        la_andi(&as, Xcarry_out->index, Xoperand->index, 1);
+        la_move(&as, Xresult->index, LA_ZERO);
+    }
+}
+
+}  // namespace Dynarmic::Backend::LoongArch64

src/dynarmic/src/dynarmic/backend/loongarch64/lagoon_cpp.h

@@ -0,0 +1,8 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+extern "C" {
+#include <lagoon.h>
+}

src/dynarmic/src/dynarmic/backend/loongarch64/reg_alloc.cpp

@@ -0,0 +1,364 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "dynarmic/backend/loongarch64/reg_alloc.h"
+
+#include <algorithm>
+#include <array>
+#include <limits>
+
+#include "dynarmic/backend/loongarch64/lagoon_cpp.h"
+
+#include "common/assert.h"
+#include "common/common_types.h"
+
+#include "dynarmic/common/always_false.h"
+
+namespace Dynarmic::Backend::LoongArch64 {
+
+constexpr size_t spill_offset = offsetof(StackLayout, spill);
+constexpr size_t spill_slot_size = sizeof(decltype(StackLayout::spill)::value_type);
+
+static bool IsValuelessType(IR::Type type) {
+    switch (type) {
+    case IR::Type::Table:
+        return true;
+    default:
+        return false;
+    }
+}
+
+IR::Type Argument::GetType() const {
+    return value.GetType();
+}
+
+bool Argument::IsImmediate() const {
+    return value.IsImmediate();
+}
+
+bool Argument::GetImmediateU1() const {
+    return value.GetU1();
+}
+
+u8 Argument::GetImmediateU8() const {
+    const u64 imm = value.GetImmediateAsU64();
+    ASSERT(imm < 0x100);
+    return u8(imm);
+}
+
+u16 Argument::GetImmediateU16() const {
+    const u64 imm = value.GetImmediateAsU64();
+    ASSERT(imm < 0x10000);
+    return u16(imm);
+}
+
+u32 Argument::GetImmediateU32() const {
+    const u64 imm = value.GetImmediateAsU64();
+    ASSERT(imm < 0x100000000);
+    return u32(imm);
+}
+
+u64 Argument::GetImmediateU64() const {
+    return value.GetImmediateAsU64();
+}
+
+IR::Cond Argument::GetImmediateCond() const {
+    ASSERT(IsImmediate() && GetType() == IR::Type::Cond);
+    return value.GetCond();
+}
+
+IR::AccType Argument::GetImmediateAccType() const {
+    ASSERT(IsImmediate() && GetType() == IR::Type::AccType);
+    return value.GetAccType();
+}
+
+bool HostLocInfo::Contains(const IR::Inst* value) const {
+    return std::find(values.begin(), values.end(), value) != values.end();
+}
+
+void HostLocInfo::SetupScratchLocation() {
+    ASSERT(IsCompletelyEmpty());
+    locked = 1;
+    realized = true;
+}
+
+bool HostLocInfo::IsCompletelyEmpty() const {
+    return values.empty() && !locked && !accumulated_uses && !expected_uses && !uses_this_inst && !realized;
+}
+
+void HostLocInfo::UpdateUses() {
+    accumulated_uses += uses_this_inst;
+    uses_this_inst = 0;
+
+    if (accumulated_uses == expected_uses) {
+        values.clear();
+        accumulated_uses = 0;
+        expected_uses = 0;
+    }
+}
+
+RegAlloc::ArgumentInfo RegAlloc::GetArgumentInfo(IR::Inst* inst) {
+    ArgumentInfo ret = {Argument{}, Argument{}, Argument{}, Argument{}};
+    for (size_t i = 0; i < inst->NumArgs(); i++) {
+        const IR::Value arg = inst->GetArg(i);
+        ret[i].value = arg;
+        if (!arg.IsImmediate() && !IsValuelessType(arg.GetType())) {
+            ASSERT(ValueLocation(arg.GetInst()) && "argument must already been defined");
+            ValueInfo(arg.GetInst()).uses_this_inst++;
+        }
+    }
+    return ret;
+}
+
+bool RegAlloc::IsValueLive(IR::Inst* inst) const {
+    return !!ValueLocation(inst);
+}
+
+void RegAlloc::UpdateAllUses() {
+    for (auto& info : hostloc_info) {
+        info.UpdateUses();
+    }
+}
+
+void RegAlloc::DefineAsExisting(IR::Inst* inst, Argument& arg) {
+    ASSERT(!ValueLocation(inst));
+
+    if (arg.value.IsImmediate()) {
+        inst->ReplaceUsesWith(arg.value);
+        return;
+    }
+
+    auto& info = ValueInfo(arg.value.GetInst());
+    info.values.emplace_back(inst);
+    info.expected_uses += inst->UseCount();
+}
+
+void RegAlloc::AssertNoMoreUses() const {
+    // TODO: Re-enable this assert once all register allocation issues are fixed
+    // const auto is_empty = [](const auto& i) { return i.IsCompletelyEmpty(); };
+    // ASSERT(std::all_of(hostloc_info.begin(), hostloc_info.end(), is_empty));
+}
+
+template<HostLoc::Kind kind>
+u32 RegAlloc::GenerateImmediate(const IR::Value& value) {
+    if constexpr (kind == HostLoc::Kind::Gpr) {
+        const u32 new_location_index = AllocateRegister(gpr_order, GprOffset);
+        SpillGpr(new_location_index);
+        hostloc_info[GprOffset + new_location_index].SetupScratchLocation();
+
+        la_load_immediate64(&as, static_cast<la_gpr_t>(new_location_index),
+                            static_cast<int64_t>(value.GetImmediateAsU64()));
+
+        return new_location_index;
+    } else if constexpr (kind == HostLoc::Kind::Fpr) {
+        ASSERT(false && "Unimplemented instruction");
+    } else {
+        UNREACHABLE();
+    }
+    return 0;
+}
+
+template<HostLoc::Kind required_kind>
+u32 RegAlloc::RealizeReadImpl(const IR::Value& value) {
+    if (value.IsImmediate()) {
+        return GenerateImmediate<required_kind>(value);
+    }
+
+    const auto current_location = ValueLocation(value.GetInst());
+    ASSERT(current_location);
+
+    if (current_location->kind == required_kind) {
+        ValueInfo(*current_location).realized = true;
+        return current_location->index;
+    }
+
+    ASSERT(!ValueInfo(*current_location).realized);
+    ASSERT(!ValueInfo(*current_location).locked);
+
+    if constexpr (required_kind == HostLoc::Kind::Gpr) {
+        const u32 new_location_index = AllocateRegister(gpr_order, GprOffset);
+        SpillGpr(new_location_index);
+
+        switch (current_location->kind) {
+        case HostLoc::Kind::Gpr:
+            UNREACHABLE();
+        case HostLoc::Kind::Fpr:
+            la_movfr2gr_d(&as, static_cast<la_gpr_t>(new_location_index),
+                          static_cast<la_fpr_t>(current_location->index));
+            break;
+        case HostLoc::Kind::Spill:
+            la_ld_d(&as, static_cast<la_gpr_t>(new_location_index), LA_SP,
+                    static_cast<int32_t>(spill_offset + current_location->index * spill_slot_size));
+            break;
+        }
+
+        hostloc_info[GprOffset + new_location_index] = std::exchange(ValueInfo(*current_location), {});
+        hostloc_info[GprOffset + new_location_index].realized = true;
+        return new_location_index;
+    } else if constexpr (required_kind == HostLoc::Kind::Fpr) {
+        const u32 new_location_index = AllocateRegister(fpr_order, FprOffset);
+        SpillFpr(new_location_index);
+
+        switch (current_location->kind) {
+        case HostLoc::Kind::Gpr:
+            la_movgr2fr_d(&as, static_cast<la_fpr_t>(new_location_index),
+                          static_cast<la_gpr_t>(current_location->index));
+            break;
+        case HostLoc::Kind::Fpr:
+            UNREACHABLE();
+        case HostLoc::Kind::Spill:
+            la_fld_d(&as, static_cast<la_fpr_t>(new_location_index), LA_SP,
+                     static_cast<int32_t>(spill_offset + current_location->index * spill_slot_size));
+            break;
+        }
+
+        hostloc_info[FprOffset + new_location_index] = std::exchange(ValueInfo(*current_location), {});
+        hostloc_info[FprOffset + new_location_index].realized = true;
+        return new_location_index;
+    } else {
+        UNREACHABLE();
+    }
+}
+
+u32 RegAlloc::RealizeWriteImpl(const IR::Inst* value, HostLoc::Kind required_kind) {
+    if (value == nullptr) {
+        // Scratch register allocation
+        if (required_kind == HostLoc::Kind::Gpr) {
+            const u32 idx = AllocateRegister(gpr_order, GprOffset);
+            SpillGpr(idx);
+            hostloc_info[GprOffset + idx].SetupScratchLocation();
+            return idx;
+        } else if (required_kind == HostLoc::Kind::Fpr) {
+            const u32 idx = AllocateRegister(fpr_order, FprOffset);
+            SpillFpr(idx);
+            hostloc_info[FprOffset + idx].SetupScratchLocation();
+            return idx;
+        }
+    }
+
+    ASSERT(!ValueLocation(value));
+
+    const auto setup_location = [&](HostLocInfo& info) {
+        info = {};
+        info.values.emplace_back(value);
+        info.locked = true;
+        info.realized = true;
+        info.expected_uses = value->UseCount();
+    };
+
+    if (required_kind == HostLoc::Kind::Gpr) {
+        const u32 new_location_index = AllocateRegister(gpr_order, GprOffset);
+        SpillGpr(new_location_index);
+        setup_location(hostloc_info[GprOffset + new_location_index]);
+        return new_location_index;
+    } else if (required_kind == HostLoc::Kind::Fpr) {
+        const u32 new_location_index = AllocateRegister(fpr_order, FprOffset);
+        SpillFpr(new_location_index);
+        setup_location(hostloc_info[FprOffset + new_location_index]);
+        return new_location_index;
+    } else {
+        UNREACHABLE();
+    }
+}
+
+template u32 RegAlloc::RealizeReadImpl<HostLoc::Kind::Gpr>(const IR::Value& value);
+template u32 RegAlloc::RealizeReadImpl<HostLoc::Kind::Fpr>(const IR::Value& value);
+
+u32 RegAlloc::AllocateRegister(const std::vector<u32>& order, size_t base_offset) {
+    const auto empty = std::find_if(order.begin(), order.end(), [&](u32 i) {
+        auto& info = hostloc_info[base_offset + i];
+        return info.values.empty() && !info.locked;
+    });
+    if (empty != order.end()) {
+        return *empty;
+    }
+
+    std::vector<u32> candidates;
+    std::copy_if(order.begin(), order.end(), std::back_inserter(candidates), [&](u32 i) {
+        return !hostloc_info[base_offset + i].locked;
+    });
+    ASSERT(!candidates.empty());
+
+    u32 best = candidates[0];
+    size_t min_lru = hostloc_info[base_offset + best].lru_counter;
+    for (size_t i = 1; i < candidates.size(); ++i) {
+        auto& info = hostloc_info[base_offset + candidates[i]];
+        if (info.lru_counter < min_lru) {
+            min_lru = info.lru_counter;
+            best = candidates[i];
+        }
+    }
+    hostloc_info[base_offset + best].lru_counter++;
+    return best;
+}
+
+void RegAlloc::SpillGpr(u32 index) {
+    auto& gpr_info = hostloc_info[GprOffset + index];
+    ASSERT(!gpr_info.locked && !gpr_info.realized);
+    if (gpr_info.values.empty()) {
+        return;
+    }
+    const u32 new_location_index = FindFreeSpill();
+    la_st_d(&as, static_cast<la_gpr_t>(index), LA_SP,
+            static_cast<int32_t>(spill_offset + new_location_index * spill_slot_size));
+    hostloc_info[SpillOffset + new_location_index] = std::exchange(gpr_info, {});
+}
+
+void RegAlloc::SpillFpr(u32 index) {
+    auto& fpr_info = hostloc_info[FprOffset + index];
+    ASSERT(!fpr_info.locked && !fpr_info.realized);
+    if (fpr_info.values.empty()) {
+        return;
+    }
+    const u32 new_location_index = FindFreeSpill();
+    la_fst_d(&as, static_cast<la_fpr_t>(index), LA_SP,
+             static_cast<int32_t>(spill_offset + new_location_index * spill_slot_size));
+    hostloc_info[SpillOffset + new_location_index] = std::exchange(fpr_info, {});
+}
+
+u32 RegAlloc::FindFreeSpill() const {
+    for (size_t i = 0; i < SpillCount; ++i) {
+        if (hostloc_info[SpillOffset + i].values.empty()) {
+            return static_cast<u32>(i);
+        }
+    }
+    UNREACHABLE();
+}
+
+std::optional<HostLoc> RegAlloc::ValueLocation(const IR::Inst* value) const {
+    for (size_t i = 0; i < hostloc_info.size(); ++i) {
+        if (hostloc_info[i].Contains(value)) {
+            if (i < GprCount) {
+                return HostLoc{HostLoc::Kind::Gpr, static_cast<u32>(i)};
+            } else if (i < GprCount + FprCount) {
+                return HostLoc{HostLoc::Kind::Fpr, static_cast<u32>(i - GprCount)};
+            } else {
+                return HostLoc{HostLoc::Kind::Spill, static_cast<u32>(i - GprCount - FprCount)};
+            }
+        }
+    }
+    return std::nullopt;
+}
+
+HostLocInfo& RegAlloc::ValueInfo(HostLoc host_loc) {
+    switch (host_loc.kind) {
+    case HostLoc::Kind::Gpr:
+        return hostloc_info[GprOffset + host_loc.index];
+    case HostLoc::Kind::Fpr:
+        return hostloc_info[FprOffset + host_loc.index];
+    case HostLoc::Kind::Spill:
+        return hostloc_info[SpillOffset + host_loc.index];
+    }
+    UNREACHABLE();
+}
+
+HostLocInfo& RegAlloc::ValueInfo(const IR::Inst* value) {
+    for (auto& info : hostloc_info) {
+        if (info.Contains(value)) {
+            return info;
+        }
+    }
+    UNREACHABLE();
+}
+
+}  // namespace Dynarmic::Backend::LoongArch64

src/dynarmic/src/dynarmic/backend/loongarch64/reg_alloc.h

@@ -0,0 +1,232 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <array>
+#include <optional>
+#include <utility>
+#include <vector>
+
+#include "dynarmic/backend/loongarch64/lagoon_cpp.h"
+#include <ankerl/unordered_dense.h>
+
+#include "common/assert.h"
+#include "common/common_types.h"
+#include "dynarmic/mcl/is_instance_of_template.hpp"
+
+#include "dynarmic/backend/loongarch64/stack_layout.h"
+#include "dynarmic/ir/cond.h"
+#include "dynarmic/ir/microinstruction.h"
+#include "dynarmic/ir/value.h"
+
+namespace Dynarmic::Backend::LoongArch64 {
+
+class RegAlloc;
+
+// Wrapper types for LoongArch GPR/FPR (replacing biscuit's register types)
+struct GPR {
+    la_gpr_t index = LA_ZERO;
+    GPR() = default;
+    explicit GPR(u32 i) : index{static_cast<la_gpr_t>(i)} {}
+    uint32_t Index() const { return static_cast<uint32_t>(index); }
+};
+
+struct FPR {
+    la_fpr_t index = LA_F0;
+    FPR() = default;
+    explicit FPR(u32 i) : index{static_cast<la_fpr_t>(i)} {}
+    uint32_t Index() const { return static_cast<uint32_t>(index); }
+};
+
+struct VPR {
+    la_vpr_t index;
+    VPR() = default;
+    explicit VPR(u32 i) : index{static_cast<la_vpr_t>(i)} {}
+    uint32_t Index() const { return static_cast<uint32_t>(index); }
+};
+
+struct HostLoc {
+    enum class Kind {
+        Gpr,
+        Fpr,
+        Spill,
+    } kind;
+    u32 index;
+};
+
+struct Argument {
+public:
+    using copyable_reference = std::reference_wrapper<Argument>;
+
+    IR::Type GetType() const;
+    bool IsImmediate() const;
+
+    bool GetImmediateU1() const;
+    u8 GetImmediateU8() const;
+    u16 GetImmediateU16() const;
+    u32 GetImmediateU32() const;
+    u64 GetImmediateU64() const;
+    IR::Cond GetImmediateCond() const;
+    IR::AccType GetImmediateAccType() const;
+
+private:
+    friend class RegAlloc;
+    explicit Argument() {}
+
+    IR::Value value;
+    bool allocated = false;
+};
+
+template<typename T>
+struct RAReg {
+public:
+    static constexpr HostLoc::Kind kind = std::is_same_v<T, FPR> || std::is_same_v<T, VPR>
+                                            ? HostLoc::Kind::Fpr
+                                            : HostLoc::Kind::Gpr;
+
+    operator T() const { return *reg; }
+
+    T operator*() const { return *reg; }
+
+    const T* operator->() const { return &*reg; }
+
+    ~RAReg();
+
+private:
+    friend class RegAlloc;
+    explicit RAReg(RegAlloc& reg_alloc, bool write, const IR::Value& value);
+
+    void Realize();
+
+    RegAlloc& reg_alloc;
+    bool write;
+    const IR::Value value;
+    std::optional<T> reg;
+};
+
+struct HostLocInfo final {
+    std::vector<const IR::Inst*> values;
+    size_t locked = 0;
+    size_t uses_this_inst = 0;
+    size_t accumulated_uses = 0;
+    size_t expected_uses = 0;
+    bool realized = false;
+    size_t lru_counter = 0;
+
+    bool Contains(const IR::Inst*) const;
+    void SetupScratchLocation();
+    bool IsCompletelyEmpty() const;
+    void UpdateUses();
+};
+
+class RegAlloc {
+public:
+    using ArgumentInfo = std::array<Argument, IR::max_arg_count>;
+
+    explicit RegAlloc(lagoon_assembler_t& as, std::vector<u32> gpr_order, std::vector<u32> fpr_order)
+            : as{as}, gpr_order{std::move(gpr_order)}, fpr_order{std::move(fpr_order)} {}
+
+    ArgumentInfo GetArgumentInfo(IR::Inst* inst);
+    bool IsValueLive(IR::Inst* inst) const;
+
+    auto ReadX(Argument& arg) { return RAReg<GPR>{*this, false, arg.value}; }
+    auto ReadD(Argument& arg) { return RAReg<FPR>{*this, false, arg.value}; }
+    auto ReadV(Argument& arg) { return RAReg<VPR>{*this, false, arg.value}; }
+
+    auto WriteX(IR::Inst* inst) { return RAReg<GPR>{*this, true, inst ? IR::Value{inst} : IR::Value{}}; }
+    auto WriteD(IR::Inst* inst) { return RAReg<FPR>{*this, true, inst ? IR::Value{inst} : IR::Value{}}; }
+    auto WriteV(IR::Inst* inst) { return RAReg<VPR>{*this, true, inst ? IR::Value{inst} : IR::Value{}}; }
+
+    auto ScratchGpr() { return RAReg<GPR>{*this, true, IR::Value{}}; }
+    auto ScratchFpr() { return RAReg<FPR>{*this, true, IR::Value{}}; }
+    auto ScratchVec() { return RAReg<VPR>{*this, true, IR::Value{}}; }
+
+    void DefineAsExisting(IR::Inst* inst, Argument& arg);
+
+    template<typename... Ts>
+    static void Realize(Ts&... rs) {
+        static_assert((mcl::is_instance_of_template<RAReg, Ts>() && ...));
+        (rs.Realize(), ...);
+    }
+
+    void UpdateAllUses();
+    void AssertNoMoreUses() const;
+
+private:
+    template<typename>
+    friend struct RAReg;
+
+    template<HostLoc::Kind kind>
+    u32 GenerateImmediate(const IR::Value& value);
+    template<HostLoc::Kind kind>
+    u32 RealizeReadImpl(const IR::Value& value);
+    u32 RealizeWriteImpl(const IR::Inst* value, HostLoc::Kind required_kind);
+
+    u32 AllocateRegister(const std::vector<u32>& order, size_t base_offset);
+    void SpillGpr(u32 index);
+    void SpillFpr(u32 index);
+    u32 FindFreeSpill() const;
+
+    std::optional<HostLoc> ValueLocation(const IR::Inst* value) const;
+    HostLocInfo& ValueInfo(HostLoc host_loc);
+    HostLocInfo& ValueInfo(const IR::Inst* value);
+
+    lagoon_assembler_t& as;
+    std::vector<u32> gpr_order;
+    std::vector<u32> fpr_order;
+
+    static constexpr size_t GprCount = 32;
+    static constexpr size_t FprCount = 32;
+    static constexpr size_t GprOffset = 0;
+    static constexpr size_t FprOffset = GprCount;
+    static constexpr size_t SpillOffset = GprCount + FprCount;
+
+    std::array<HostLocInfo, GprCount + FprCount + SpillCount> hostloc_info;
+};
+
+template<typename T>
+RAReg<T>::RAReg(RegAlloc& reg_alloc, bool write, const IR::Value& value)
+        : reg_alloc{reg_alloc}, write{write}, value{value} {
+    if (!write && !value.IsImmediate()) {
+        reg_alloc.ValueInfo(value.GetInst()).locked++;
+    }
+}
+
+template<typename T>
+RAReg<T>::~RAReg() {
+    if (value.IsEmpty()) {
+        if (reg) {
+            HostLocInfo& info = reg_alloc.ValueInfo(HostLoc{kind, reg->Index()});
+            info.locked--;
+            info.realized = false;
+        }
+        return;
+    }
+
+    if (value.IsImmediate()) {
+        if (reg) {
+            // Immediate was materialized into a scratch register
+            HostLocInfo& info = reg_alloc.ValueInfo(HostLoc{kind, reg->Index()});
+            info.locked--;
+            info.realized = false;
+        }
+    } else if (!value.IsEmpty()) {
+        HostLocInfo& info = reg_alloc.ValueInfo(value.GetInst());
+        info.locked--;
+        if (reg) {
+            info.realized = false;
+        }
+    }
+}
+
+template<typename T>
+void RAReg<T>::Realize() {
+    if (write && value.IsEmpty()) {
+        reg = T{reg_alloc.RealizeWriteImpl(nullptr, kind)};
+    } else {
+        reg = T{write ? reg_alloc.RealizeWriteImpl(value.GetInst(), kind) : reg_alloc.RealizeReadImpl<kind>(value)};
+    }
+}
+
+}  // namespace Dynarmic::Backend::LoongArch64

src/dynarmic/src/dynarmic/backend/loongarch64/stack_layout.h

@@ -0,0 +1,28 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <array>
+
+#include "common/common_types.h"
+
+namespace Dynarmic::Backend::LoongArch64 {
+
+constexpr size_t SpillCount = 64;
+
+struct alignas(16) StackLayout {
+    s64 cycles_remaining;
+    s64 cycles_to_run;
+
+    std::array<u64, SpillCount> spill;
+
+    u32 save_host_fpcr;
+    u32 save_host_fpsr;
+
+    bool check_bit;
+};
+
+static_assert(sizeof(StackLayout) % 16 == 0);
+
+}  // namespace Dynarmic::Backend::LoongArch64

src/dynarmic/src/dynarmic/backend/x64/devirtualize.h

@@ -75,7 +75,7 @@ ArgCallback DevirtualizeItanium(mcl::class_type<decltype(mfp)>* this_) {
 
 template<auto mfp>
 ArgCallback Devirtualize(mcl::class_type<decltype(mfp)>* this_) {
-#if defined(__APPLE__) || defined(linux) || defined(__linux) || defined(__linux__)
+#if defined(__APPLE__) || defined(__linux__)
     return DevirtualizeItanium<mfp>(this_);
 #elif defined(__MINGW64__)
     return DevirtualizeItanium<mfp>(this_);

src/dynarmic/src/dynarmic/common/atomic.h

@@ -36,6 +36,14 @@ inline void And(volatile u32* ptr, u32 value) {
 #endif
 }
 
+inline u32 Exchange(volatile u32* ptr, u32 value) {
+#ifdef _MSC_VER
+    return static_cast<u32>(_InterlockedExchange(reinterpret_cast<volatile long*>(ptr), value));
+#else
+    return __atomic_exchange_n(ptr, value, __ATOMIC_SEQ_CST);
+#endif
+}
+
 inline void Barrier() {
 #ifdef _MSC_VER
     _ReadWriteBarrier();

src/frontend_common/config.cpp

@@ -1009,7 +1009,7 @@ std::string Config::AdjustOutputString(const std::string& string) {
 
     // Windows requires that two forward slashes are used at the start of a path for unmapped
     // network drives so we have to watch for that here
-#ifndef ANDROID
+#ifndef __ANDROID__
     if (string.substr(0, 2) == "//") {
         boost::replace_all(adjusted_string, "//", "/");
         adjusted_string.insert(0, "/");

src/frontend_common/data_manager.h

@@ -1,8 +1,7 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifndef DATA_MANAGER_H
-#define DATA_MANAGER_H
+#pragma once
 
 #include "common/common_types.h"
 #include <string>
@@ -21,5 +20,3 @@ std::string ReadableBytesSize(u64 size) noexcept;
 u64 DataDirSize(DataDir dir);
 
 }; // namespace FrontendCommon::DataManager
-
-#endif // DATA_MANAGER_H

src/frontend_common/firmware_manager.cpp

@@ -13,7 +13,7 @@
 #include "core/crypto/key_manager.h"
 #include "frontend_common/content_manager.h"
 
-#ifdef ANDROID
+#ifdef __ANDROID__
 #include <jni.h>
 #include <common/android/id_cache.h>
 #include <common/android/android_common.h>
@@ -25,7 +25,7 @@ FirmwareManager::InstallKeys(std::string location, std::string extension) {
 
     const auto keys_dir = Common::FS::GetEdenPath(Common::FS::EdenPath::KeysDir);
 
-#ifdef ANDROID
+#ifdef __ANDROID__
     JNIEnv *env = Common::Android::GetEnvForThread();
 
     jstring jsrc = Common::Android::ToJString(env, location);

src/frontend_common/firmware_manager.h

@@ -1,8 +1,7 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifndef FIRMWARE_MANAGER_H
-#define FIRMWARE_MANAGER_H
+#pragma once
 
 #include "common/common_types.h"
 #include "core/core.h"
@@ -107,5 +106,3 @@ inline std::pair<Service::Set::FirmwareVersionFormat, Result> GetFirmwareVersion
 
 // TODO(crueter): GET AS STRING
 }
-
-#endif

src/frontend_common/mod_manager.h

@@ -5,6 +5,7 @@
 
 #include <filesystem>
 #include <optional>
+#include <vector>
 #include "common/common_types.h"
 
 namespace FrontendCommon {

src/hid_core/frontend/emulated_controller.cpp

@@ -179,7 +179,7 @@ void EmulatedController::LoadDevices() {
     if (npad_id_type == NpadIdType::Player1 || npad_id_type == NpadIdType::Handheld) {
         camera_params[1] = Common::ParamPackage{"engine:camera,camera:1"};
         nfc_params[0] = Common::ParamPackage{"engine:virtual_amiibo,nfc:1"};
-#ifndef ANDROID
+#ifndef __ANDROID__
         ring_params[1] = Common::ParamPackage{"engine:joycon,axis_x:100,axis_y:101"};
 #else
         android_params = Common::ParamPackage{"engine:android,port:100"};

src/input_common/main.cpp

@@ -30,7 +30,7 @@
 #include "input_common/drivers/sdl_driver.h"
 #endif
 
-#ifdef ANDROID
+#ifdef __ANDROID__
 #include "input_common/drivers/android.h"
 #endif
 
@@ -85,7 +85,7 @@ struct InputSubsystem::Impl {
         RegisterEngine("cemuhookudp", udp_client);
         RegisterEngine("tas", tas_input);
         RegisterEngine("camera", camera);
-#ifdef ANDROID
+#ifdef __ANDROID__
         RegisterEngine("android", android);
 #endif
         RegisterEngine("virtual_amiibo", virtual_amiibo);
@@ -119,7 +119,7 @@ struct InputSubsystem::Impl {
         UnregisterEngine(udp_client);
         UnregisterEngine(tas_input);
         UnregisterEngine(camera);
-#ifdef ANDROID
+#ifdef __ANDROID__
         UnregisterEngine(android);
 #endif
         UnregisterEngine(virtual_amiibo);
@@ -138,13 +138,13 @@ struct InputSubsystem::Impl {
             Common::ParamPackage{{"display", "Any"}, {"engine", "any"}},
         };
 
-#ifndef ANDROID
+#ifndef __ANDROID__
         auto keyboard_devices = keyboard->GetInputDevices();
         devices.insert(devices.end(), keyboard_devices.begin(), keyboard_devices.end());
         auto mouse_devices = mouse->GetInputDevices();
         devices.insert(devices.end(), mouse_devices.begin(), mouse_devices.end());
 #endif
-#ifdef ANDROID
+#ifdef __ANDROID__
         auto android_devices = android->GetInputDevices();
         devices.insert(devices.end(), android_devices.begin(), android_devices.end());
 #endif
@@ -176,7 +176,7 @@ struct InputSubsystem::Impl {
         if (engine == mouse->GetEngineName()) {
             return mouse;
         }
-#ifdef ANDROID
+#ifdef __ANDROID__
         if (engine == android->GetEngineName()) {
             return android;
         }
@@ -261,7 +261,7 @@ struct InputSubsystem::Impl {
         if (engine == mouse->GetEngineName()) {
             return true;
         }
-#ifdef ANDROID
+#ifdef __ANDROID__
         if (engine == android->GetEngineName()) {
             return true;
         }
@@ -294,7 +294,7 @@ struct InputSubsystem::Impl {
     void BeginConfiguration() {
         keyboard->BeginConfiguration();
         mouse->BeginConfiguration();
-#ifdef ANDROID
+#ifdef __ANDROID__
         android->BeginConfiguration();
 #endif
 #ifdef ENABLE_LIBUSB
@@ -310,7 +310,7 @@ struct InputSubsystem::Impl {
     void EndConfiguration() {
         keyboard->EndConfiguration();
         mouse->EndConfiguration();
-#ifdef ANDROID
+#ifdef __ANDROID__
         android->EndConfiguration();
 #endif
 #ifdef ENABLE_LIBUSB
@@ -355,7 +355,7 @@ struct InputSubsystem::Impl {
     std::shared_ptr<Joycons> joycon;
 #endif
 
-#ifdef ANDROID
+#ifdef __ANDROID__
     std::shared_ptr<Android> android;
 #endif
 };
@@ -412,7 +412,7 @@ const Camera* InputSubsystem::GetCamera() const {
     return impl->camera.get();
 }
 
-#ifdef ANDROID
+#ifdef __ANDROID__
 Android* InputSubsystem::GetAndroid() {
     return impl->android.get();
 }

src/qt_common/abstract/frontend.h

@@ -1,8 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifndef FRONTEND_H
-#define FRONTEND_H
+#pragma once
 
 #include <QGuiApplication>
 #include "qt_common/qt_common.h"
@@ -114,4 +113,3 @@ const QString GetTextInput(const QString& title = QString(), const QString& capt
                            const QString& defaultText = QString());
 
 } // namespace QtCommon::Frontend
-#endif // FRONTEND_H

src/qt_common/qt_common.h

@@ -1,8 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifndef QT_COMMON_H
-#define QT_COMMON_H
+#pragma once
 
 #include <memory>
 #include <QWindow>
@@ -62,4 +61,3 @@ const QString tr(const std::string& str);
 
 std::filesystem::path GetEdenCommand();
 } // namespace QtCommon
-#endif

src/qt_common/util/applet.h

@@ -1,9 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifndef QT_APPLET_UTIL_H
-#define QT_APPLET_UTIL_H
+#pragma once
 
 // TODO
 namespace QtCommon::Applets {}
-#endif // QT_APPLET_UTIL_H

src/qt_common/util/content.h

@@ -1,8 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifndef QT_CONTENT_UTIL_H
-#define QT_CONTENT_UTIL_H
+#pragma once
 
 #include <QObject>
 #include "common/common_types.h"
@@ -63,4 +62,3 @@ void configureFilesystemProvider(const std::string& filepath);
 // Profiles //
 void FixProfiles();
 } // namespace QtCommon::Content
-#endif // QT_CONTENT_UTIL_H

src/qt_common/util/fs.h

@@ -1,12 +1,12 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
+#pragma once
+
 #include <filesystem>
 #include <optional>
 #include "common/common_types.h"
 
-#pragma once
-
 namespace QtCommon::FS {
 
 void LinkRyujinx(std::filesystem::path& from, std::filesystem::path& to);

src/qt_common/util/game.h

@@ -1,8 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifndef QT_GAME_UTIL_H
-#define QT_GAME_UTIL_H
+#pragma once
 
 #include <QObject>
 #include <QStandardPaths>
@@ -78,5 +77,3 @@ void CreateHomeMenuShortcut(ShortcutTarget target);
 [[nodiscard]] bool SaveIconToFile(const std::filesystem::path& icon_path, const QImage& image);
 
 } // namespace QtCommon::Game
-
-#endif // QT_GAME_UTIL_H

src/qt_common/util/meta.h

@@ -1,8 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifndef QT_META_H
-#define QT_META_H
+#pragma once
 
 #include <QObject>
 
@@ -12,4 +11,3 @@ namespace QtCommon::Meta {
 void RegisterMetaTypes();
 
 } // namespace QtCommon::Meta
-#endif // QT_META_H

src/qt_common/util/path.h

@@ -1,8 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifndef QT_PATH_UTIL_H
-#define QT_PATH_UTIL_H
+#pragma once
 
 #include <QObject>
 #include "common/common_types.h"
@@ -10,5 +9,3 @@
 namespace QtCommon::Path {
 bool OpenShaderCache(u64 program_id, QObject* parent);
 }
-
-#endif // QT_PATH_UTIL_H

src/qt_common/util/rom.h

@@ -1,16 +1,11 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifndef QT_ROM_UTIL_H
-#define QT_ROM_UTIL_H
+#pragma once
 
 #include <cstddef>
 #include "qt_common/qt_common.h"
 
 namespace QtCommon::ROM {
-
-bool RomFSRawCopy(size_t total_size, size_t& read_size, QtProgressCallback callback,
-                  const FileSys::VirtualDir& src, const FileSys::VirtualDir& dest, bool full);
-
+bool RomFSRawCopy(size_t total_size, size_t& read_size, QtProgressCallback callback, const FileSys::VirtualDir& src, const FileSys::VirtualDir& dest, bool full);
 }
-#endif // QT_ROM_UTIL_H

src/shader_recompiler/backend/spirv/emit_spirv_convert.cpp

@@ -151,7 +151,7 @@ Id EmitConvertU32U64(EmitContext& ctx, Id value) {
 }
 
 Id EmitConvertF16F32(EmitContext& ctx, Id value) {
-#ifdef ANDROID
+#ifdef __ANDROID__
     return ctx.OpFConvert(ctx.F16[1], value);
 #else
     const auto result = ctx.OpFConvert(ctx.F16[1], value);

src/shader_recompiler/backend/spirv/emit_spirv_image.cpp

@@ -506,7 +506,7 @@ Id EmitImageSampleExplicitLod(EmitContext& ctx, IR::Inst* inst, const IR::Value&
     Id result = Emit(&EmitContext::OpImageSparseSampleExplicitLod,
                      &EmitContext::OpImageSampleExplicitLod, ctx, inst, ctx.F32[4],
                      Texture(ctx, info, index), coords, operands.Mask(), operands.Span());
-#ifdef ANDROID
+#ifdef __ANDROID__
     if (Settings::values.fix_bloom_effects.GetValue()) {
         result = ctx.OpVectorTimesScalar(ctx.F32[4], result, ctx.Const(0.98f));
     }

src/video_core/buffer_cache/buffer_cache.h

@@ -801,7 +801,7 @@ void BufferCache<P>::UpdateVertexBufferSlot(u32 index, const Binding& binding) {
 template <class P>
 void BufferCache<P>::BindHostVertexBuffers() {
 
-#ifdef ANDROID
+#ifdef __ANDROID__
     const bool use_optimized_vertex_buffers = Settings::values.use_optimized_vertex_buffers.GetValue();
 #else
     constexpr bool use_optimized_vertex_buffers = true;

src/video_core/gpu_logging/freedreno_debug.cpp

@@ -1,7 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifdef ANDROID
+#ifdef __ANDROID__
 
 #include "video_core/gpu_logging/freedreno_debug.h"
 #include "common/logging.h"
@@ -49,4 +49,4 @@ std::string FreedrenoDebugger::GetBreadcrumbs() {
 
 } // namespace GPU::Logging::Freedreno
 
-#endif // ANDROID
+#endif // __ANDROID__

src/video_core/gpu_logging/freedreno_debug.h

@@ -3,7 +3,7 @@
 
 #pragma once
 
-#ifdef ANDROID
+#ifdef __ANDROID__
 
 #include <string>
 
@@ -29,4 +29,4 @@ private:
 
 } // namespace GPU::Logging::Freedreno
 
-#endif // ANDROID
+#endif // __ANDROID__

src/video_core/host1x/ffmpeg.cpp

@@ -28,7 +28,7 @@ namespace {
 constexpr AVPixelFormat PreferredGpuFormat = AV_PIX_FMT_NV12;
 constexpr AVPixelFormat PreferredCpuFormat = AV_PIX_FMT_YUV420P;
 constexpr std::array PreferredGpuDecoders = {
-#if defined (_WIN32)
+#if defined(_WIN32)
     AV_HWDEVICE_TYPE_CUDA,
     AV_HWDEVICE_TYPE_D3D11VA,
     AV_HWDEVICE_TYPE_DXVA2,
@@ -39,7 +39,7 @@ constexpr std::array PreferredGpuDecoders = {
     AV_HWDEVICE_TYPE_DRM,
 #elif defined(__APPLE__)
     AV_HWDEVICE_TYPE_VIDEOTOOLBOX,
-#elif defined(ANDROID)
+#elif defined(__ANDROID__)
     AV_HWDEVICE_TYPE_MEDIACODEC,
 #elif defined(__unix__)
     AV_HWDEVICE_TYPE_CUDA,

src/video_core/renderer_vulkan/vk_pipeline_cache.cpp

@@ -45,7 +45,7 @@
 #include "video_core/vulkan_common/vulkan_wrapper.h"
 #include "video_core/gpu_logging/gpu_logging.h"
 
-#ifdef ANDROID
+#ifdef __ANDROID__
 #include "../../android/app/src/main/jni/android_settings.h"
 #endif
 
@@ -328,7 +328,7 @@ Shader::RuntimeInfo MakeRuntimeInfo(std::span<const Shader::IR::Program> program
 size_t GetTotalPipelineWorkers() {
     const size_t max_core_threads =
         std::max<size_t>(static_cast<size_t>(std::thread::hardware_concurrency()), 2ULL) - 1ULL;
-#ifdef ANDROID
+#ifdef __ANDROID__
     const int configured = AndroidSettings::values.pipeline_worker_count.GetValue();
     const int clamped = std::clamp(configured, 4, 8);
     const size_t desired = static_cast<size_t>(clamped);

src/video_core/renderer_vulkan/vk_present_manager.cpp

@@ -309,7 +309,7 @@ void PresentManager::CopyToSwapchain(Frame* frame) {
         try {
             // Recreate surface and swapchain if needed.
             if (requires_recreation) {
-#ifdef ANDROID
+#ifdef __ANDROID__
                 surface = CreateSurface(instance, render_window.GetWindowInfo());
 #endif
                 RecreateSwapchain(frame);

src/video_core/renderer_vulkan/vk_rasterizer.cpp

@@ -928,13 +928,13 @@ void RasterizerVulkan::LoadDiskResources(u64 title_id, std::stop_token stop_load
 }
 
 void RasterizerVulkan::FlushWork() {
-#ifdef ANDROID
+#ifdef __ANDROID__
     static constexpr u32 DRAWS_TO_DISPATCH = 512;
     static constexpr u32 CHECK_MASK = 3;
 #else
     static constexpr u32 DRAWS_TO_DISPATCH = 4096;
     static constexpr u32 CHECK_MASK = 7;
-#endif // ANDROID
+#endif // __ANDROID__
 
     static_assert(DRAWS_TO_DISPATCH % (CHECK_MASK + 1) == 0);
     if ((++draw_counter & CHECK_MASK) != CHECK_MASK) {

src/video_core/renderer_vulkan/vk_swapchain.cpp

@@ -288,7 +288,7 @@ void Swapchain::CreateSwapchain(const VkSurfaceCapabilitiesKHR& capabilities) {
         .imageSharingMode = VK_SHARING_MODE_EXCLUSIVE,
         .queueFamilyIndexCount = 0,
         .pQueueFamilyIndices = nullptr,
-#ifdef ANDROID
+#ifdef __ANDROID__
         // On Android, do not allow surface rotation to deviate from the frontend.
         .preTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR,
 #else
@@ -313,7 +313,7 @@ void Swapchain::CreateSwapchain(const VkSurfaceCapabilitiesKHR& capabilities) {
         swapchain_ci.imageFormat,  // Base format MUST be first
         VK_FORMAT_B8G8R8A8_UNORM,
         VK_FORMAT_B8G8R8A8_SRGB,
-#ifdef ANDROID
+#ifdef __ANDROID__
         VK_FORMAT_R8G8B8A8_UNORM,  // Android may use RGBA
         VK_FORMAT_R8G8B8A8_SRGB,
 #endif
@@ -338,7 +338,7 @@ void Swapchain::CreateSwapchain(const VkSurfaceCapabilitiesKHR& capabilities) {
 
     images = swapchain.GetImages();
     image_count = static_cast<u32>(images.size());
-#ifdef ANDROID
+#ifdef __ANDROID__
     // Android is already ordered the same as Switch.
     image_view_format = VK_FORMAT_R8G8B8A8_UNORM;
 #else

src/video_core/renderer_vulkan/vk_turbo_mode.cpp

@@ -1,10 +1,10 @@
-// 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 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#if defined(ANDROID) && defined(ARCHITECTURE_arm64)
+#if defined(__ANDROID__) && defined(ARCHITECTURE_arm64)
 #include <adrenotools/driver.h>
 #endif
 
@@ -20,7 +20,7 @@ namespace Vulkan {
 using namespace Common::Literals;
 
 TurboMode::TurboMode(const vk::Instance& instance, const vk::InstanceDispatch& dld)
-#ifndef ANDROID
+#ifndef __ANDROID__
     : m_device{CreateDevice(instance, dld, VK_NULL_HANDLE)}, m_allocator{m_device}
 #endif
 {
@@ -40,7 +40,7 @@ void TurboMode::QueueSubmitted() {
 }
 
 void TurboMode::Run(std::stop_token stop_token) {
-#ifndef ANDROID
+#ifndef __ANDROID__
     auto& dld = m_device.GetLogical();
 
     // Allocate buffer. 2MiB should be sufficient.
@@ -154,7 +154,7 @@ void TurboMode::Run(std::stop_token stop_token) {
 #endif
 
     while (!stop_token.stop_requested()) {
-#ifdef ANDROID
+#ifdef __ANDROID__
 #ifdef ARCHITECTURE_arm64
         adrenotools_set_turbo(true);
 #endif
@@ -232,7 +232,7 @@ void TurboMode::Run(std::stop_token stop_token) {
                    std::chrono::milliseconds{100};
         });
     }
-#if defined(ANDROID) && defined(ARCHITECTURE_arm64)
+#if defined(__ANDROID__) && defined(ARCHITECTURE_arm64)
     adrenotools_set_turbo(false);
 #endif
 }

src/video_core/renderer_vulkan/vk_turbo_mode.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -23,7 +26,7 @@ public:
 private:
     void Run(std::stop_token stop_token);
 
-#ifndef ANDROID
+#ifndef __ANDROID__
     Device m_device;
     MemoryAllocator m_allocator;
 #endif

src/video_core/smaa_area_tex.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: 2013 Jorge Jimenez (jorge@iryoku.com)
 // SPDX-FileCopyrightText: 2013 Jose I. Echevarria (joseignacioechevarria@gmail.com)
 // SPDX-FileCopyrightText: 2013 Belen Masia (bmasia@unizar.es)
@@ -5,8 +8,7 @@
 // SPDX-FileCopyrightText: 2013 Diego Gutierrez (diegog@unizar.es)
 // SPDX-License-Identifier: MIT
 
-#ifndef AREATEX_H
-#define AREATEX_H
+#pragma once
 
 #define AREATEX_WIDTH 160
 #define AREATEX_HEIGHT 560
@@ -11219,5 +11221,3 @@ static const unsigned char areaTexBytes[] = {
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
-
-#endif

src/video_core/smaa_search_tex.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: 2013 Jorge Jimenez (jorge@iryoku.com)
 // SPDX-FileCopyrightText: 2013 Jose I. Echevarria (joseignacioechevarria@gmail.com)
 // SPDX-FileCopyrightText: 2013 Belen Masia (bmasia@unizar.es)
@@ -5,8 +8,7 @@
 // SPDX-FileCopyrightText: 2013 Diego Gutierrez (diegog@unizar.es)
 // SPDX-License-Identifier: MIT
 
-#ifndef SEARCHTEX_H
-#define SEARCHTEX_H
+#pragma once
 
 #define SEARCHTEX_WIDTH 64
 #define SEARCHTEX_HEIGHT 16
@@ -84,5 +86,3 @@ static const unsigned char searchTexBytes[] = {
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 };
-
-#endif

src/video_core/vulkan_common/vulkan_debug_callback.cpp

@@ -27,7 +27,7 @@ VkBool32 DebugUtilCallback(VkDebugUtilsMessageSeverityFlagBitsEXT severity,
                            [[maybe_unused]] void* user_data) {
     // Skip logging known false-positive validation errors
     switch (static_cast<u32>(data->messageIdNumber)) {
-#ifdef ANDROID
+#ifdef __ANDROID__
     case 0xbf9cf353u: // VUID-vkCmdBindVertexBuffers2-pBuffers-04111
     // The below are due to incorrect reporting of extendedDynamicState
     case 0x1093bebbu: // VUID-vkCmdSetCullMode-None-03384

src/video_core/vulkan_common/vulkan_device.cpp

@@ -26,7 +26,7 @@
 #include "video_core/vulkan_common/vulkan_wrapper.h"
 #include "video_core/gpu_logging/gpu_logging.h"
 
-#if defined(ANDROID) && defined(ARCHITECTURE_arm64)
+#if defined(__ANDROID__) && defined(ARCHITECTURE_arm64)
 #include <adrenotools/bcenabler.h>
 #include <android/api-level.h>
 #endif
@@ -294,7 +294,7 @@ ankerl::unordered_dense::map<VkFormat, VkFormatProperties> GetFormatProperties(v
     return format_properties;
 }
 
-#if defined(ANDROID) && defined(ARCHITECTURE_arm64)
+#if defined(__ANDROID__) && defined(ARCHITECTURE_arm64)
 void OverrideBcnFormats(ankerl::unordered_dense::map<VkFormat, VkFormatProperties>& format_properties) {
     // These properties are extracted from Adreno driver 512.687.0
     constexpr VkFormatFeatureFlags tiling_features{VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT |
@@ -504,7 +504,7 @@ Device::Device(VkInstance instance_, vk::PhysicalDevice physical_, VkSurfaceKHR
         features.shader_atomic_int64.shaderSharedInt64Atomics = false;
         features.features.shaderInt64 = false;
 
-#if defined(ANDROID) && defined(ARCHITECTURE_arm64)
+#if defined(__ANDROID__) && defined(ARCHITECTURE_arm64)
         // BCn patching only safe on Android 9+ (API 28+). Older versions crash on driver load.
         const auto major = (properties.properties.driverVersion >> 24) << 2;
         const auto minor = (properties.properties.driverVersion >> 12) & 0xFFFU;

src/video_core/vulkan_common/vulkan_library.cpp

@@ -16,7 +16,7 @@ namespace Vulkan {
 std::shared_ptr<Common::DynamicLibrary> OpenLibrary(
     [[maybe_unused]] Core::Frontend::GraphicsContext* context) {
     LOG_DEBUG(Render_Vulkan, "Looking for a Vulkan library");
-#if defined(ANDROID) && defined(ARCHITECTURE_arm64)
+#if defined(__ANDROID__) && defined(ARCHITECTURE_arm64)
     // Android manages its Vulkan driver from the frontend.
     return context->GetDriverLibrary();
 #else

src/video_core/vulkan_common/vulkan_memory_allocator.cpp

@@ -256,18 +256,20 @@ namespace Vulkan {
                          device.GetDispatchLoader());
     }
 
-    vk::Buffer
-    MemoryAllocator::CreateBuffer(const VkBufferCreateInfo &ci, MemoryUsage usage) const
-    {
+    vk::Buffer MemoryAllocator::CreateBuffer(const VkBufferCreateInfo &ci, MemoryUsage usage) const {
+        // MESA will do memcpy() if not marked as host cached, so just force mark it for most buffers
+        auto const anv_flags = (usage == MemoryUsage::Stream
+            && device.GetDriverID() == VK_DRIVER_ID_INTEL_OPEN_SOURCE_MESA)
+            ? VK_MEMORY_PROPERTY_HOST_CACHED_BIT : 0;
         const VmaAllocationCreateInfo alloc_ci = {
-                .flags = VMA_ALLOCATION_CREATE_WITHIN_BUDGET_BIT | MemoryUsageVmaFlags(usage),
-                .usage = MemoryUsageVma(usage),
-                .requiredFlags = 0,
-                .preferredFlags = MemoryUsagePreferredVmaFlags(usage),
-                .memoryTypeBits = usage == MemoryUsage::Stream ? 0u : valid_memory_types,
-                .pool = VK_NULL_HANDLE,
-                .pUserData = nullptr,
-                .priority = 0.f,
+            .flags = VMA_ALLOCATION_CREATE_WITHIN_BUDGET_BIT | MemoryUsageVmaFlags(usage),
+            .usage = MemoryUsageVma(usage),
+            .requiredFlags = 0,
+            .preferredFlags = MemoryUsagePreferredVmaFlags(usage) | anv_flags,
+            .memoryTypeBits = usage == MemoryUsage::Stream ? 0u : valid_memory_types,
+            .pool = VK_NULL_HANDLE,
+            .pUserData = nullptr,
+            .priority = 0.f,
         };
 
         VkBuffer handle{};

src/video_core/vulkan_common/vulkan_wrapper.h

@@ -453,7 +453,7 @@ public:
         return handle != Type{};
     }
 
-#ifndef ANDROID
+#ifndef __ANDROID__
     /**
      * Releases ownership of the managed handle.
      * The caller is responsible for managing the lifetime of the returned handle.
@@ -535,7 +535,7 @@ public:
         return handle != Type{};
     }
 
-#ifndef ANDROID
+#ifndef __ANDROID__
     /**
      * Releases ownership of the managed handle.
      * The caller is responsible for managing the lifetime of the returned handle.

src/yuzu/data_dialog.h

@@ -1,8 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifndef DATA_DIALOG_H
-#define DATA_DIALOG_H
+#pragma once
 
 #include <QDialog>
 #include "frontend_common/data_manager.h"
@@ -47,5 +46,3 @@ private:
 
     std::optional<std::string> selectProfile();
 };
-
-#endif // DATA_DIALOG_H

src/yuzu/migration_dialog.h

@@ -1,8 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifndef MIGRATION_DIALOG_H
-#define MIGRATION_DIALOG_H
+#pragma once
 
 #include <QHBoxLayout>
 #include <QMessageBox>
@@ -29,5 +28,3 @@ private:
 
     QAbstractButton* m_clickedButton;
 };
-
-#endif // MIGRATION_DIALOG_H

src/yuzu/migration_worker.h

@@ -1,8 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifndef MIGRATION_WORKER_H
-#define MIGRATION_WORKER_H
+#pragma once
 
 #include <QObject>
 #include "common/fs/path_util.h"
@@ -73,5 +72,3 @@ private:
     MigrationStrategy strategy;
     QString success_text = tr("Data was migrated successfully.");
 };
-
-#endif // MIGRATION_WORKER_H

src/yuzu/ryujinx_dialog.h

@@ -1,8 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifndef RYUJINX_DIALOG_H
-#define RYUJINX_DIALOG_H
+#pragma once
 
 #include <filesystem>
 #include <QDialog>
@@ -28,5 +27,3 @@ private:
     std::filesystem::path m_eden;
     std::filesystem::path m_ryu;
 };
-
-#endif // RYUJINX_DIALOG_H

tools/cpp-lint.sh

@@ -0,0 +1,55 @@
+#!/bin/sh -ex
+
+# SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# tools/../
+ROOTDIR=$(CDPATH='' cd -- "$(dirname -- "$0")/../" && pwd)
+BUILD_DIR="$ROOTDIR"/build
+SRC_DIR="$ROOTDIR"/src
+
+die() {
+    echo "-- $*" >&2
+    exit 1
+}
+
+usage() {
+    cat <<EOF
+Usage: $0 [command]
+
+Dumb script that serves as a ad-hoc cpp-linter
+
+Commands:
+    once    Check for #pragma once prescence in header files
+	osdef	Finds OS defines that are not recommended to use.
+	inchk   Check includes being valid/toolchain not being stupid
+EOF
+}
+
+while :; do
+	case "$1" in
+	once)
+        find "$SRC_DIR" -type f -name "*.h" -exec grep -L "#pragma once" {} +
+		break
+		;;
+	osdef)
+		# not recommended macros
+		PATTERN="ANDROID\|_WIN64\|__linux\|__unix\|APPLE\|__APPLE"
+		strings=("ANDROID" "_WIN64" "__linux" "__unix" "APPLE" "__APPLE" "linux" "unix")
+		for item in "${strings[@]}"; do
+			PATTERN="$PATTERN\|ifdef $item\|($item)"
+		done
+		# if statements for macros that shouldn't be if
+		strings=("_WIN32" "_AIX" "__managarm__" "__unix__" "__linux__" "__FreeBSD__" "__NetBSD__" \
+			"__OpenBSD__" "__DragonFly__" "__redox__" "__HAIKU__" "__OHOS__" "__FIREOS__")
+		for item in "${strings[@]}"; do
+			PATTERN="$PATTERN\|if $item"
+		done
+        find "$SRC_DIR" -type f -name "*.h" -exec grep -nw "$PATTERN" {} + || echo
+		break
+		;;
+	*) usage ;;
+	esac
+
+	shift
+done