Common: Add CPU feature detection for ARM64

src/common/aarch64/cpu_detect.h

@@ -0,0 +1,31 @@
+// Copyright 2013 Dolphin Emulator Project / 2021 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <string>
+
+namespace Common {
+
+/// Arm64 CPU capabilities that may be detected by this module
+struct CPUCaps {
+    std::string cpu_string;
+
+    bool aes;
+    bool afp; // Alternate floating-point behavior
+    bool asimd;
+    bool crc32;
+    bool fma;
+    bool fp;
+    bool sha1;
+    bool sha2;
+};
+
+/**
+ * Gets the supported capabilities of the host CPU
+ * @return Reference to a CPUCaps struct with the detected host CPU capabilities
+ */
+const CPUCaps& GetCPUCaps();
+
+} // namespace Common