[WIP] libSceNgs2 (#439)

* init ngs2

* clang

* ngs2 HLE for missing LLE

* clang

* clang

* orbis ngs2 error codes

* resolve, error codes, ngs2_impl

* clang

* clang

* mac atomic

* clang

* mac

* clang

---------

Co-authored-by: microsoftv <6063922+microsoftv@users.noreply.github.com>

src/core/libraries/ngs2/ngs2.h

@@ -0,0 +1,72 @@
+// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "common/types.h"
+
+#include <atomic>
+#include <memory>
+
+namespace Core::Loader {
+class SymbolsResolver;
+}
+
+namespace Libraries::Ngs2 {
+
+class Ngs2;
+
+using SceNgs2Handle = Ngs2*;
+
+enum SceNgs2HandleType { SCE_NGS2_HANDLE_TYPE_SYSTEM = 0 };
+
+struct Ngs2Handle {
+    void* selfPointer;
+    void* dataPointer;
+    std::atomic<u32>* atomicPtr;
+    u32 handleType;
+    u32 flags_unk;
+
+    u32 uid;
+    u16 maxGrainSamples;
+    u16 minGrainSamples;
+    u16 currentGrainSamples;
+    u16 numGrainSamples;
+    u16 unknown2;
+    u32 sampleRate;
+    u32 unknown3;
+
+    void* flushMutex;
+    u32 flushMutexInitialized;
+    void* processMutex;
+    u32 processMutexInitialized;
+
+    // Linked list pointers for system list
+    Ngs2Handle* prev;
+    Ngs2Handle* next;
+};
+
+struct SystemOptions {
+    char padding[6];
+    s32 maxGrainSamples;
+    s32 numGrainSamples;
+    s32 sampleRate;
+};
+
+struct SystemState {
+    // TODO
+};
+
+struct StackBuffer {
+    void** top;
+    void* base;
+    void* curr;
+    size_t usedSize;
+    size_t totalSize;
+    size_t alignment;
+    char isVerifyEnabled;
+    char padding[7];
+};
+
+void RegisterlibSceNgs2(Core::Loader::SymbolsResolver* sym);
+} // namespace Libraries::Ngs2