diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2f08fc90..84dc3a40 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -34,7 +34,7 @@ add_executable(shadps4
     src/Core/Memory.h
     src/Core/PS4/Linker.cpp
     src/Core/PS4/Linker.h
-     "src/Util/Singleton.h" "src/Util/Disassembler.cpp" "src/Util/Disassembler.h" "src/Util/StringUtil.h" "src/Core/PS4/Util/aerolib.h" "src/Core/PS4/Loader/SymbolsResolver.h" "src/Core/PS4/Loader/SymbolsResolver.cpp" "src/Core/PS4/HLE/Libs.cpp" "src/Core/PS4/HLE/Libs.h" "src/Core/PS4/HLE/LibC.cpp" "src/Core/PS4/HLE/LibC.h" "src/Lib/Timer.cpp" "src/Lib/Timer.h" "src/Core/PS4/HLE/LibKernel.cpp" "src/Core/PS4/HLE/LibKernel.h" "src/Core/PS4/HLE/LibSceVideoOut.cpp" "src/Core/PS4/HLE/LibSceVideoOut.h" "src/Core/PS4/HLE/LibSceGnmDriver.cpp" "src/Core/PS4/HLE/LibSceGnmDriver.h" "src/Core/PS4/HLE/Kernel/ThreadManagement.cpp" "src/Core/PS4/HLE/Kernel/ThreadManagement.h" "src/Core/PS4/HLE/ErrorCodes.h" "src/Debug.h")
+     "src/Util/Singleton.h" "src/Util/Disassembler.cpp" "src/Util/Disassembler.h" "src/Util/StringUtil.h" "src/Core/PS4/Util/aerolib.h" "src/Core/PS4/Loader/SymbolsResolver.h" "src/Core/PS4/Loader/SymbolsResolver.cpp" "src/Core/PS4/HLE/Libs.cpp" "src/Core/PS4/HLE/Libs.h" "src/Core/PS4/HLE/LibC.cpp" "src/Core/PS4/HLE/LibC.h" "src/Lib/Timer.cpp" "src/Lib/Timer.h" "src/Core/PS4/HLE/LibKernel.cpp" "src/Core/PS4/HLE/LibKernel.h" "src/Core/PS4/HLE/LibSceVideoOut.cpp" "src/Core/PS4/HLE/LibSceVideoOut.h" "src/Core/PS4/HLE/LibSceGnmDriver.cpp" "src/Core/PS4/HLE/LibSceGnmDriver.h" "src/Core/PS4/HLE/Kernel/ThreadManagement.cpp" "src/Core/PS4/HLE/Kernel/ThreadManagement.h" "src/Core/PS4/HLE/ErrorCodes.h" "src/Debug.h" "src/Core/PS4/HLE/Kernel/MemoryManagement.cpp" "src/Core/PS4/HLE/Kernel/MemoryManagement.h" "src/Core/PS4/HLE/Kernel/MemMngCodes.h")
 
 find_package(OpenGL REQUIRED)
 target_link_libraries(shadps4 PUBLIC fmt spdlog IMGUI SDL3-shared ${OPENGL_LIBRARY})
diff --git a/src/Core/PS4/HLE/ErrorCodes.h b/src/Core/PS4/HLE/ErrorCodes.h
index 5ff20660..d1f558ee 100644
--- a/src/Core/PS4/HLE/ErrorCodes.h
+++ b/src/Core/PS4/HLE/ErrorCodes.h
@@ -3,3 +3,4 @@ constexpr int SCE_OK = 0;
 
 constexpr int SCE_KERNEL_ERROR_ENOMEM = 0x8002000c;//Insufficient memory
 constexpr int SCE_KERNEL_ERROR_EINVAL = 0x80020016;//null or invalid states
+constexpr int SCE_KERNEL_ERROR_EAGAIN = 0x80020023;// Memory cannot be allocated
diff --git a/src/Core/PS4/HLE/Kernel/MemMngCodes.h b/src/Core/PS4/HLE/Kernel/MemMngCodes.h
new file mode 100644
index 00000000..3888dd7e
--- /dev/null
+++ b/src/Core/PS4/HLE/Kernel/MemMngCodes.h
@@ -0,0 +1,11 @@
+#pragma once
+#include "../../../../types.h"
+
+// constants
+
+constexpr u64 SCE_KERNEL_MAIN_DMEM_SIZE = (5637144576);  // ~ 6GB
+
+//memory types
+constexpr int SCE_KERNEL_WB_ONION  = 0;  // write - back mode (Onion bus)
+constexpr int SCE_KERNEL_WC_GARLIC = 3;  // write - combining mode (Garlic bus)
+constexpr int SCE_KERNEL_WB_GARLIC = 10; // write - back mode (Garlic bus)
diff --git a/src/Core/PS4/HLE/Kernel/MemoryManagement.cpp b/src/Core/PS4/HLE/Kernel/MemoryManagement.cpp
new file mode 100644
index 00000000..59110c56
--- /dev/null
+++ b/src/Core/PS4/HLE/Kernel/MemoryManagement.cpp
@@ -0,0 +1,19 @@
+#include "MemoryManagement.h"
+#include "../../../../Debug.h"
+#include "MemMngCodes.h"
+#include <bit>
+
+namespace HLE::Libs::LibKernel::MemoryManagement {
+
+bool isPowerOfTwo(u64 n) { return std::popcount(n) == 1; }
+
+bool is16KBmultiply(u64 n) { return ((n % (static_cast<u64>(16) * 1024) == 0)); }
+
+u64 PS4_SYSV_ABI sceKernelGetDirectMemorySize() { return SCE_KERNEL_MAIN_DMEM_SIZE; }
+
+int PS4_SYSV_ABI sceKernelAllocateDirectMemory(s64 searchStart, s64 searchEnd, u64 len, u64 alignment, int memoryType,s64* physAddrOut){
+    BREAKPOINT();
+    return 0;
+}
+
+}  // namespace HLE::Libs::LibKernel::MemoryManagement
\ No newline at end of file
diff --git a/src/Core/PS4/HLE/Kernel/MemoryManagement.h b/src/Core/PS4/HLE/Kernel/MemoryManagement.h
new file mode 100644
index 00000000..2ce4bf6d
--- /dev/null
+++ b/src/Core/PS4/HLE/Kernel/MemoryManagement.h
@@ -0,0 +1,10 @@
+#pragma once
+
+#include "../../../../types.h"
+
+namespace HLE::Libs::LibKernel::MemoryManagement {
+
+	u64 PS4_SYSV_ABI sceKernelGetDirectMemorySize();
+	int PS4_SYSV_ABI sceKernelAllocateDirectMemory(s64 searchStart, s64 searchEnd, u64 len, u64 alignment, int memoryType, s64* physAddrOut);
+
+};
\ No newline at end of file
diff --git a/src/Core/PS4/HLE/LibKernel.cpp b/src/Core/PS4/HLE/LibKernel.cpp
index 4ec53f5f..27f36d87 100644
--- a/src/Core/PS4/HLE/LibKernel.cpp
+++ b/src/Core/PS4/HLE/LibKernel.cpp
@@ -3,20 +3,12 @@
 #include "Libs.h"
 #include "../../../Debug.h"
 #include "../../../Util/Log.h"
+#include "Kernel/MemoryManagement.h"
 
 namespace HLE::Libs::LibKernel {
 
     static u64 g_stack_chk_guard = 0xDEADBEEF54321ABC; //dummy return
 
-    int PS4_SYSV_ABI sceKernelAllocateDirectMemory(off_t searchStart, off_t searchEnd, size_t len, size_t alignment, int memoryType,
-                                                   off_t* physAddrOut) {
-        BREAKPOINT();
-        return 0;  // OK
-    }
-    size_t PS4_SYSV_ABI sceKernelGetDirectMemorySize() { 
-        BREAKPOINT();
-        return 0;
-    }
     int32_t PS4_SYSV_ABI sceKernelMapDirectMemory(void** addr, size_t len, int prot, int flags, off_t directMemoryStart, size_t alignment) {
         BREAKPOINT();
         return 0;
@@ -49,8 +41,8 @@ namespace HLE::Libs::LibKernel {
         //obj
         LIB_OBJ("f7uOxY9mM1U", "libkernel", 1, "libkernel", 1, 1, &HLE::Libs::LibKernel::g_stack_chk_guard);
         //memory
-        LIB_FUNCTION("rTXw65xmLIA", "libkernel", 1, "libkernel", 1, 1, sceKernelAllocateDirectMemory); 
-        LIB_FUNCTION("pO96TwzOm5E", "libkernel", 1, "libkernel", 1, 1, sceKernelGetDirectMemorySize);
+        LIB_FUNCTION("rTXw65xmLIA", "libkernel", 1, "libkernel", 1, 1, HLE::Libs::LibKernel::MemoryManagement::sceKernelAllocateDirectMemory); 
+        LIB_FUNCTION("pO96TwzOm5E", "libkernel", 1, "libkernel", 1, 1, HLE::Libs::LibKernel::MemoryManagement::sceKernelGetDirectMemorySize);
         LIB_FUNCTION("L-Q3LEjIbgA", "libkernel", 1, "libkernel", 1, 1, sceKernelMapDirectMemory);
         LIB_FUNCTION("MBuItvba6z8", "libkernel", 1, "libkernel", 1, 1, sceKernelReleaseDirectMemory);
         //equeue
diff --git a/src/Core/PS4/HLE/LibKernel.h b/src/Core/PS4/HLE/LibKernel.h
index 5542400b..539bc9dc 100644
--- a/src/Core/PS4/HLE/LibKernel.h
+++ b/src/Core/PS4/HLE/LibKernel.h
@@ -5,8 +5,6 @@ namespace HLE::Libs::LibKernel {
 void LibKernel_Register(SymbolsResolver* sym);
 
 // functions
-int PS4_SYSV_ABI sceKernelAllocateDirectMemory(off_t searchStart, off_t searchEnd, size_t len, size_t alignment, int memoryType, off_t* physAddrOut);
-size_t PS4_SYSV_ABI sceKernelGetDirectMemorySize();
 int PS4_SYSV_ABI sceKernelCreateEqueue(/* SceKernelEqueue* eq*/ int eq, const char* name);
 int32_t PS4_SYSV_ABI sceKernelMapDirectMemory(void** addr, size_t len, int prot, int flags, off_t directMemoryStart, size_t alignment);
 int32_t PS4_SYSV_ABI sceKernelReleaseDirectMemory(off_t start, size_t len);