diff --git a/CMakeLists.txt b/CMakeLists.txt
index 34a9146..19d2a95 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -240,7 +240,7 @@ elseif (IS_OS_LINUX)
         include/ehs/io/socket/ICMP_LNX.h src/io/socket/ICMP_LNX.cpp
     )
 
-    #set(LINUX_WINDOW_SYSTEM "Wayland" CACHE STRING "Linux Window System")
+    set(LINUX_WINDOW_SYSTEM "XCB" CACHE STRING "Linux Window System")
 
     if (LINUX_WINDOW_SYSTEM STREQUAL "Wayland")
         add_compile_definitions(EHS_WS_WAYLAND)
@@ -258,7 +258,7 @@ elseif (IS_OS_LINUX)
     if (IS_ARCH_AMD64)
         list(APPEND EHS_SOURCES src/system/CPU_GCC_AMD64.asm src/HRNG_GCC.asm src/Math_GCC_AMD64.asm src/system/AVX2_GCC_AMD64.asm src/system/AVX512_GCC_AMD64.asm)
     elseif (IS_ARCH_ARM64)
-        list(APPEND EHS_SOURCES src/system/CPU_ARM64.cpp src/HRNG_ARM64.cpp src/Math_GCC_ARM64.s src/system/AVX2_AARCH64.cpp src/system/AVX512_AARCH64.cpp)
+        list(APPEND EHS_SOURCES src/system/CPU_ARM64.cpp src/system/CPU_GCC_AARCH64.s src/HRNG_ARM64.cpp src/Math_GCC_ARM64.s src/system/AVX2_AARCH64.cpp src/system/AVX512_AARCH64.cpp)
     endif ()
 endif()
 
diff --git a/src/system/CPU_ARM64.cpp b/src/system/CPU_ARM64.cpp
index ba140bf..33b6561 100644
--- a/src/system/CPU_ARM64.cpp
+++ b/src/system/CPU_ARM64.cpp
@@ -2,10 +2,6 @@
 
 namespace ehs
 {
-	void CPU::RDTSCP(TSC* tsc)
-	{
-	}
-
 	void CPU::GetManufacturer(Char_8* input)
 	{
 	}
diff --git a/src/system/CPU_GCC_AARCH64.s b/src/system/CPU_GCC_AARCH64.s
new file mode 100644
index 0000000..4ec99ac
--- /dev/null
+++ b/src/system/CPU_GCC_AARCH64.s
@@ -0,0 +1,7 @@
+.global _ZN3ehs3CPU6RDTSCPEPNS_3TSCE
+
+.section .text
+	_ZN3ehs3CPU6RDTSCPEPNS_3TSCE:
+		MRS X1, CNTVCT_EL0
+		STR X1, [X0, #4]
+		RET
\ No newline at end of file