MHR-23: Refactor and finishing SMP support.

25 files changed, 828 insertions, 0 deletions

diff --git a/Usr/Sys/CoreSystem/.gitkeep b/Usr/Sys/CoreSystem/.gitkeep
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/Usr/Sys/CoreSystem/.gitkeep
diff --git a/Usr/Sys/CoreSystem/AMD64/CoreAssembly.s b/Usr/Sys/CoreSystem/AMD64/CoreAssembly.s
new file mode 100644
index 00000000..5d1484cf
--- /dev/null
+++ b/Usr/Sys/CoreSystem/AMD64/CoreAssembly.s
@@ -0,0 +1,28 @@
+/* -------------------------------------------
+
+    Copyright SoftwareLabs
+
+    Purpose: AMD64 low level I/O
+
+------------------------------------------- */
+
+.text
+
+.globl RtGetAppPointer
+.globl RtAssertTriggerInterrupt
+
+/* @brief Application getter */
+/* @throws: ApptError: appartement error. */
+RtGetAppPointer:
+    mov $0x10, %rcx /* sysGetProcessObject */
+    int $0x32
+
+    /* rax gets saved and returned. */
+    ret
+
+RtAssertTriggerInterrupt:
+    mov $0x11, %rcx /* sysTerminateCurrentProcess */
+    int $0x32
+
+    ret
+
diff --git a/Usr/Sys/CoreSystem/ARM64/.gitkeep b/Usr/Sys/CoreSystem/ARM64/.gitkeep
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/Usr/Sys/CoreSystem/ARM64/.gitkeep
diff --git a/Usr/Sys/CoreSystem/Headers/Alert.h b/Usr/Sys/CoreSystem/Headers/Alert.h
new file mode 100644
index 00000000..7decd4ca
--- /dev/null
+++ b/Usr/Sys/CoreSystem/Headers/Alert.h
@@ -0,0 +1,25 @@
+/* -------------------------------------------
+
+	Copyright SoftwareLabs
+
+------------------------------------------- */
+
+/*************************************************************
+ *
+ * File: Alert.h
+ * Purpose: New OS alert dialog.
+ * Date: 3/26/24
+ *
+ * Copyright SoftwareLabs, all rights reserved.
+ *
+ *************************************************************/
+
+#pragma once
+
+#include <Headers/Defines.h>
+
+/// @brief Shows an alert box, as provided by the OS.
+/// @param fmt The alert formating.
+/// @param
+/// @return
+CS_EXTERN_C VoidType UiAlert(const CharacterTypeUTF8* fmt, ...);
diff --git a/Usr/Sys/CoreSystem/Headers/Defines.h b/Usr/Sys/CoreSystem/Headers/Defines.h
new file mode 100644
index 00000000..1f35da0a
--- /dev/null
+++ b/Usr/Sys/CoreSystem/Headers/Defines.h
@@ -0,0 +1,241 @@
+/* -------------------------------------------
+
+	Copyright SoftwareLabs
+
+------------------------------------------- */
+
+#pragma once
+
+#ifdef CS_MUST_PASS
+#undef CS_MUST_PASS
+#endif
+
+#ifdef _DEBUG
+#define CS_MUST_PASS(e)                                                                                             \
+	{                                                                                                               \
+		if (!e)                                                                                                     \
+		{                                                                                                           \
+			UiAlert("Assertion failed.\nExpression :%s\nFile: %s\nLine: %i", #e, __FILE__, __LINE__) RtAssertTriggerInterrupt() \
+		}                                                                                                           \
+	}
+#else
+#define CS_MUST_PASS(e) CS_UNREFERENCED_PARAMETER(e)
+#endif
+
+#ifdef __cplusplus
+
+#define CS_EXTERN_C extern "C"
+
+#else
+
+#define CS_EXTERN_C extern
+
+#endif
+
+#include <Headers/Alert.h>
+
+struct ApplicationInterface;
+struct GUID;
+
+CS_EXTERN_C void RtAssertTriggerInterrupt(void);
+
+#define CS_STDCALL __attribute__((stdcall))
+#define CS_CDECL   __attribute__((cdecl))
+#define CS_MSCALL  __attribute__((ms_abi))
+
+#define PACKED __attribute__((packed))
+
+#define CS_PASCAL CS_STDCALL
+
+#include <Headers/Hint.h>
+
+typedef __UINT8_TYPE__	ByteType;
+typedef __UINT16_TYPE__ WordType;
+typedef __UINT32_TYPE__ DWordType;
+typedef __UINT64_TYPE__ QWordType;
+typedef __SIZE_TYPE__	SizeType;
+
+typedef char			   CharacterTypeUTF8;
+typedef CharacterTypeUTF8* PtrCharacterType;
+
+typedef void* PtrVoidType;
+typedef void  VoidType;
+
+#ifdef __SINGLE_PRECISION__
+typedef float FloatType;
+typedef float PositionType;
+#else
+typedef double FloatType;
+typedef double PositionType;
+#endif
+
+typedef __UINTPTR_TYPE__ UIntPtrType;
+typedef __INTPTR_TYPE__	 IntPtrType;
+typedef __UINT64_TYPE__	 UInt64Type;
+typedef __INT64_TYPE__	 Int64Type;
+typedef __UINT32_TYPE__	 UInt32Type;
+typedef __INT32_TYPE__	 Int32Type;
+
+typedef CharacterTypeUTF8 BooleanType;
+
+#define Yes 1
+#define No	0
+
+#define CS_PTR *
+
+#define CS_UNREFERENCED_PARAMETER(e) ((VoidType)(e))
+
+#ifdef __x86_64__
+
+#define CS_FAR	__far
+#define CS_NEAR __near
+
+#define _M_AMD64 2
+#else
+
+#define CS_FAR
+#define CS_NEAR
+
+#endif
+
+#ifdef __aarch64__
+#define _M_AARCH64 3
+#endif
+
+#ifdef __powerpc64__
+#define _M_PPC64 4
+#endif
+
+#ifdef __64x0__
+#define _M_64000 5
+#endif
+
+#ifdef __riscv__
+#define _M_RISCV 6
+#endif
+
+#define CS_STATIC static
+#define CS_INLINE inline
+#define CS_CONST  const
+
+#ifdef __cplusplus
+#define CS_CONSTEXPR constexpr
+#else
+#define CS_CONSTEXPR
+#endif // __cplusplus
+
+enum 
+{
+	kCallAllocPtr = 1,
+	kCallFreePtr,
+	kCallSizePtr,
+	kCallCheckPtr,
+	kCallAllocStack,
+	/// @brief Open a specific handle
+	/// (can be used as sel to call methods related to it.)
+	kCallOpenFile,
+	kCallCloseFile,
+	kCallOpenDir,
+	kCallCloseDir,
+	kCallOpenDevice,
+	kCallCloseDevice,
+	kCallCreateWindow,
+	kCallCloseWindow,
+	kCallCreateMenu,
+	kCallCloseMenu,
+	kCallRandomNumberGenerator,
+	kCallGetArgsCount,
+	kCallGetArgsPtr,
+	kCallFileExists,
+	kCallDirectoryExists,
+	kCallSymlinkExists,
+	kCallDeviceExists,
+	kCallDriveExists,
+	/// @brief Number of process calls.
+	kCallCount,
+};
+
+/**
+ * @brief GUID type, something you can also find in CFKit.
+ * @author Amlal El Mahrouss
+ */
+typedef struct GUID
+{
+	DWordType Data1;
+	WordType  Data2;
+	WordType  Data3;
+	ByteType  Data4[8];
+} GUIDType, *PtrGUIDType;
+
+/// \brief Application Interface.
+/// \author Amlal El Mahrouss
+typedef struct ApplicationInterface
+{
+	VoidType (*Release)(struct ApplicationInterface* Self, DWordType ExitCode);
+	IntPtrType (*Invoke)(struct ApplicationInterface* Self, DWordType Sel, ...);
+	VoidType (*Query)(struct ApplicationInterface* Self, PtrVoidType* Dst, 
+						SizeType SzDst, struct GUID* GuidOf);
+} ApplicationInterface, *ApplicationInterfaceRef;
+
+#ifdef __cplusplus
+
+#define CS_COPY_DELETE(KLASS)                \
+	KLASS& operator=(const KLASS&) = delete; \
+	KLASS(const KLASS&)			   = delete;
+
+#define CS_COPY_DEFAULT(KLASS)                \
+	KLASS& operator=(const KLASS&) = default; \
+	KLASS(const KLASS&)			   = default;
+
+#define CS_MOVE_DELETE(KLASS)           \
+	KLASS& operator=(KLASS&&) = delete; \
+	KLASS(KLASS&&)			  = delete;
+
+#define CS_MOVE_DEFAULT(KLASS)           \
+	KLASS& operator=(KLASS&&) = default; \
+	KLASS(KLASS&&)			  = default;
+
+#define app_cast reinterpret_cast<ApplicationInterfaceRef>
+
+template <SizeType N>
+using StrType = CharacterTypeUTF8[N];
+
+#else
+
+#define app_cast(X) (ApplicationInterfaceRef)(X)
+
+#endif // ifdef C++
+
+/// @brief Get app singleton.
+/// @param
+/// @return
+CS_EXTERN_C ApplicationInterfaceRef RtGetAppPointer(VoidType);
+
+/// @brief Get argument count
+/// @param
+/// @return
+CS_EXTERN_C SizeType 				RtGetAppArgumentsCount(VoidType);
+
+/// @brief Get argument pointer.
+/// @param
+/// @return
+CS_EXTERN_C CharacterTypeUTF8** 	RtGetAppArgumentsPtr(VoidType);
+
+/// @brief Shared application interface.
+CS_EXTERN_C ApplicationInterfaceRef kSharedApplication;
+
+/// @brief 255 length string type.
+typedef CharacterTypeUTF8 StrType255[255];
+
+#define True  1
+#define False 0
+#define Bool  BooleanType
+
+#define NullPtr ((PtrVoidType)0)
+
+#ifndef kInvalidRef
+#define kInvalidRef 0
+#endif
+
+/// @brief Result type.
+typedef UInt64Type ResultType;
diff --git a/Usr/Sys/CoreSystem/Headers/File.h b/Usr/Sys/CoreSystem/Headers/File.h
new file mode 100644
index 00000000..cfd9ee30
--- /dev/null
+++ b/Usr/Sys/CoreSystem/Headers/File.h
@@ -0,0 +1,57 @@
+/* -------------------------------------------
+
+	Copyright SoftwareLabs
+
+------------------------------------------- */
+
+#pragma once
+
+#include <Headers/Defines.h>
+
+#define kMaxForkNameLength (256U) /* long fork names. */
+
+struct _Fork;
+
+/// @brief Filesystem wrapper.
+
+typedef QWordType FSRef;
+
+/// @brief Opens a new file.
+/// @param path where to find it.
+/// @param rest the restrict (rw, rwe, r+, w+, r, w)
+/// @return FSRef the file.
+CS_EXTERN_C FSRef CSOpenFile(const CharacterTypeUTF8* path, const CharacterTypeUTF8* r);
+
+/// @brief Closes the file and flushes it to the said file.
+/// @param refCS the filesystem reference.
+/// @return
+CS_EXTERN_C VoidType CSCloseFile(FSRef refCS);
+
+/// @brief A fork information header.
+typedef struct _Fork
+{
+	Int32Type		  forkFlags;
+	Int32Type		  forkKind;
+	CharacterTypeUTF8 forkName[kMaxForkNameLength];
+	SizeType		  forkSize;
+	CharacterTypeUTF8 forkData[];
+} ForkType, ForkTypePtr;
+
+typedef ForkType* FSForkRef;
+
+/// @brief Gets the fork inside a file.
+/// @param refCS the filesystem ref
+/// @param forkName the fork's name
+/// @return the fork data.
+CS_EXTERN_C FSForkRef CSGetFork(FSRef refCS, const CharacterTypeUTF8* forkName);
+
+/// @brief Check if the filesystem path is valid.
+/// @return if not return false, or true.
+CS_EXTERN_C BooleanType CSIsValidPath(const CharacterTypeUTF8* path);
+
+/// @brief Flush file
+/// @param refCS the file reference.
+/// @return 
+CS_EXTERN_C VoidType CSFlushFile(FSRef refCS);
+
+/// END OF FILE
diff --git a/Usr/Sys/CoreSystem/Headers/Heap.h b/Usr/Sys/CoreSystem/Headers/Heap.h
new file mode 100644
index 00000000..b2ad6e74
--- /dev/null
+++ b/Usr/Sys/CoreSystem/Headers/Heap.h
@@ -0,0 +1,39 @@
+/* -------------------------------------------
+
+	Copyright SoftwareLabs
+
+------------------------------------------- */
+
+#pragma once
+
+#include <Headers/Defines.h>
+
+#define cAllocationKindCount (2U)
+
+enum CsAllocationKind
+{
+	kStandardAllocation = 0xC,
+	kArrayAllocation	= 0xD,
+};
+
+/// @brief Allocates a new pointer from process pool.
+/// @param sz the size
+/// @param flags the allocation flags.
+/// @return
+CS_EXTERN_C PtrVoidType CSAllocateHeap(QWordType sz,
+									   DWordType flags);
+
+/// @brief Check if the pointer exists.
+/// @param ptr the pointer to free.
+/// @return
+CS_EXTERN_C BooleanType CSIsHeapValid(PtrVoidType ptr);
+
+/// @brief Gets the size of the process' pointer.
+/// @param ptr the pointer to free.
+/// @return
+CS_EXTERN_C QWordType CSGetHeapSize(PtrVoidType ptr);
+
+/// @brief Frees the process pointer.
+/// @param ptr the pointer to free.
+/// @return
+CS_EXTERN_C VoidType CSFreeHeap(PtrVoidType ptr);
diff --git a/Usr/Sys/CoreSystem/Headers/Hint.h b/Usr/Sys/CoreSystem/Headers/Hint.h
new file mode 100644
index 00000000..ee14711d
--- /dev/null
+++ b/Usr/Sys/CoreSystem/Headers/Hint.h
@@ -0,0 +1,20 @@
+/* -------------------------------------------
+
+	Copyright SoftwareLabs
+
+------------------------------------------- */
+
+#pragma once
+
+#pragma compiler(hint_manifest)
+
+#define _Input
+#define _Output
+
+#define _Optional
+
+#define _StrictCheckInput
+#define _StrictCheckOutput
+
+#define _InOut
+#define _StrictInOut
diff --git a/Usr/Sys/CoreSystem/Headers/Intl.h b/Usr/Sys/CoreSystem/Headers/Intl.h
new file mode 100644
index 00000000..b868adca
--- /dev/null
+++ b/Usr/Sys/CoreSystem/Headers/Intl.h
@@ -0,0 +1,29 @@
+/* -------------------------------------------
+
+	Copyright SoftwareLabs
+
+------------------------------------------- */
+
+#pragma once
+
+/// @brief Intlization primitives.
+
+#include <Headers/Defines.h>
+
+typedef UInt64Type IntlRef;
+
+/// @brief Get app locale.
+/// @param name locale name.
+/// @return 
+IntlRef		IntlGetLocale(const char* name);
+
+/// @brief Set app locale.
+/// @param intl the locale
+/// @return 
+BooleanType IntlSetLocale(const IntlRef intl);
+
+/// @brief locale helpers.
+
+/// @brief translate a string from a locale.
+const CharacterTypeUTF8* Intl(const CharacterTypeUTF8* input,
+							  const IntlRef			   locale);
diff --git a/Usr/Sys/CoreSystem/Headers/Math.h b/Usr/Sys/CoreSystem/Headers/Math.h
new file mode 100644
index 00000000..0079803e
--- /dev/null
+++ b/Usr/Sys/CoreSystem/Headers/Math.h
@@ -0,0 +1,27 @@
+/* -------------------------------------------
+
+	Copyright SoftwareLabs
+
+------------------------------------------- */
+
+#pragma once
+
+#include <Headers/Defines.h>
+
+///////////////////////////////////////////////////////////////////////
+/// Random number generators functions                              ///
+///////////////////////////////////////////////////////////////////////
+
+/// @brief Number generator helper.
+/// @return Random generated number.
+CS_EXTERN_C SizeType MathRand(VoidType);
+
+///////////////////////////////////////////////////////////////////////
+/// Mathematical functions                                          ///
+///////////////////////////////////////////////////////////////////////
+
+CS_EXTERN_C FloatType Sqrt(FloatType number);
+
+CS_EXTERN_C FloatType Cosine(FloatType number);
+CS_EXTERN_C FloatType Sine(FloatType number);
+CS_EXTERN_C FloatType Tangent(FloatType number);
\ No newline at end of file
diff --git a/Usr/Sys/CoreSystem/Headers/Rsrc.h b/Usr/Sys/CoreSystem/Headers/Rsrc.h
new file mode 100644
index 00000000..7fe52910
--- /dev/null
+++ b/Usr/Sys/CoreSystem/Headers/Rsrc.h
@@ -0,0 +1,12 @@
+/* -------------------------------------------
+
+	Copyright SoftwareLabs
+
+------------------------------------------- */
+
+#pragma once
+
+#include <Headers/Defines.h>
+
+/// @file Rsrc.h
+/// @brief RXML forks.
\ No newline at end of file
diff --git a/Usr/Sys/CoreSystem/Headers/Thread.h b/Usr/Sys/CoreSystem/Headers/Thread.h
new file mode 100644
index 00000000..15b40df3
--- /dev/null
+++ b/Usr/Sys/CoreSystem/Headers/Thread.h
@@ -0,0 +1,47 @@
+/* -------------------------------------------
+
+	Copyright SoftwareLabs
+
+------------------------------------------- */
+
+//
+// Created by Amlal on 3/18/24
+//
+
+#ifndef __THREAD__
+#define __THREAD__
+
+#include <Headers/Defines.h>
+
+#define kThreadErrorExit (-33)
+
+/// @brief Thread reference.
+typedef QWordType ThreadRef;
+
+/// @brief Main application thread.
+CS_EXTERN_C ThreadRef kMainThread;
+
+typedef VoidType (*ThreadEntrypointKind)(VoidType);
+
+/// @brief Creates a new thread, and runs the code.
+/// @param threadName the thread's name.
+/// @param threadStart where to start.
+/// @return
+CS_EXTERN_C ThreadRef CSThreadCreate(const CharacterTypeUTF8* threadName, ThreadEntrypointKind threadStart);
+
+/// @brief Dispoes the thread, and exits with code kThreadErrorExit
+/// @param ref the thread reference.
+/// @return  nothing.
+CS_EXTERN_C VoidType CSThreadRelease(ThreadRef ref);
+
+/// @brief Waits for the thread to complete.
+/// @param ref the thread reference.
+/// @return  nothing.
+CS_EXTERN_C VoidType CSThreadJoin(ThreadRef ref);
+
+/// @brief Yields the current thread.
+/// @param ref the thead reference.
+/// @return
+CS_EXTERN_C VoidType CSThreadYield(ThreadRef ref);
+
+#endif // __THREAD__
diff --git a/Usr/Sys/CoreSystem/Headers/Transport.h b/Usr/Sys/CoreSystem/Headers/Transport.h
new file mode 100644
index 00000000..d78656f3
--- /dev/null
+++ b/Usr/Sys/CoreSystem/Headers/Transport.h
@@ -0,0 +1,48 @@
+/* -------------------------------------------
+
+	Copyright SoftwareLabs
+
+------------------------------------------- */
+
+//
+// Created by Amlal on 5/12/24
+//
+
+#ifndef __TRANSPORT__
+#define __TRANSPORT__
+
+/// @file: Transport.h
+/// @brief Open Transport Layer, an alternative to berkeley sockets.
+
+#include <Headers/Defines.h>
+
+typedef QWordType TptStreamType;
+
+/// @brief Opens a new socket
+/// @param afType address family
+/// @param sockType type of socket
+/// @param sockProto socket protocol.
+/// @return The STREAMS socket.
+/// @note return is const.
+CS_EXTERN_C CS_CONST TptStreamType CSOpenSocket(UInt32Type afType, UInt32Type sockType, UInt32Type sockProto);
+
+/// @brief Close a STREAMS socket.
+/// @param streams The streams socket.
+/// @return 
+CS_EXTERN_C VoidType CSCloseSocket(CS_CONST TptStreamType streams);
+
+/// @brief Get OpenTransport version.
+/// @param void
+/// @return 
+CS_EXTERN_C CS_CONST Int32Type CSGetVersion(VoidType);
+
+enum
+{
+	TrSocketProtoTCP, /// TCP socket
+	TrSocketProtoUDP, /// UDP socket
+	TrSocketProtoUN, /// IPC  socket
+	TrSocketProtoRaw, /// Raw socket
+	TrSocketProtoCount,
+};
+
+#endif // __TRANSPORT__
\ No newline at end of file
diff --git a/Usr/Sys/CoreSystem/POWER/CoreAssembly.s b/Usr/Sys/CoreSystem/POWER/CoreAssembly.s
new file mode 100644
index 00000000..e7919f23
--- /dev/null
+++ b/Usr/Sys/CoreSystem/POWER/CoreAssembly.s
@@ -0,0 +1,23 @@
+; /* -------------------------------------------
+;
+;    Copyright SoftwareLabs
+;
+;    Purpose: POWER low level I/O
+;
+; ------------------------------------------- */
+
+/* @brief Application getter */
+/* @throws: ApptError: appartement error. */
+export .code64 RtGetAppPointer:
+    mflr r3
+    stw 0x10, 0(r3) /* sysGetProcessObject */
+    sc
+
+    blr
+
+export .code64 RtAssertTriggerInterrupt:
+    mflr r3
+    stw 0x11, 0(r3) /* sysTerminateCurrentProcess */
+    sc
+
+    blr
diff --git a/Usr/Sys/CoreSystem/Private.xml b/Usr/Sys/CoreSystem/Private.xml
new file mode 100644
index 00000000..4be6c388
--- /dev/null
+++ b/Usr/Sys/CoreSystem/Private.xml
@@ -0,0 +1,4 @@
+<SourceDeploy>
+    <File name="Headers/Hint.h" hidden="true"/>
+    <Directory name="Sources/" hidden="true"/>
+</SourceDeploy>
\ No newline at end of file
diff --git a/Usr/Sys/CoreSystem/RISCV/.gitkeep b/Usr/Sys/CoreSystem/RISCV/.gitkeep
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/Usr/Sys/CoreSystem/RISCV/.gitkeep
diff --git a/Usr/Sys/CoreSystem/ReadMe.md b/Usr/Sys/CoreSystem/ReadMe.md
new file mode 100644
index 00000000..ae5df339
--- /dev/null
+++ b/Usr/Sys/CoreSystem/ReadMe.md
@@ -0,0 +1,13 @@
+# CoreSystem
+## Core System framework.
+
+Currently contains:
+
+- Heap API.
+- File API.
+- Data API.
+- Threading API.
+
+Needs to have:
+- Device API
+- Drive API.
\ No newline at end of file
diff --git a/Usr/Sys/CoreSystem/Sources/App.c b/Usr/Sys/CoreSystem/Sources/App.c
new file mode 100644
index 00000000..42ea19c6
--- /dev/null
+++ b/Usr/Sys/CoreSystem/Sources/App.c
@@ -0,0 +1,31 @@
+/* -------------------------------------------
+
+	Copyright SoftwareLabs
+
+------------------------------------------- */
+
+#include <Headers/Defines.h>
+
+/// @brief Main Application object, retrieved from the RtGetAppPointer symbol.
+ApplicationInterfaceRef kSharedApplication = NullPtr;
+
+/// @brief Gets the app arguments count.
+/// @param void no arguments.
+/// @return The number of arguments given to the application.
+CS_EXTERN_C SizeType RtGetAppArgumentsCount(VoidType)
+{
+	CS_MUST_PASS(kSharedApplication);
+
+	return kSharedApplication->Invoke(kSharedApplication, kCallGetArgsCount);
+}
+
+/// @brief Gets the app arguments pointer.
+/// @param void no arguments.
+/// @return
+CS_EXTERN_C CharacterTypeUTF8** RtGetAppArgumentsPtr(VoidType)
+{
+	CS_MUST_PASS(kSharedApplication);
+
+	return (CharacterTypeUTF8**)kSharedApplication->Invoke(kSharedApplication,
+														   kCallGetArgsPtr);
+}
diff --git a/Usr/Sys/CoreSystem/Sources/CRTStartup.c b/Usr/Sys/CoreSystem/Sources/CRTStartup.c
new file mode 100644
index 00000000..1cfad65d
--- /dev/null
+++ b/Usr/Sys/CoreSystem/Sources/CRTStartup.c
@@ -0,0 +1,12 @@
+/* -------------------------------------------
+
+	Copyright SoftwareLabs
+
+------------------------------------------- */
+
+#include <Headers/Defines.h>
+
+VoidType __DllMainCRTStartup(VoidType)
+{
+    kSharedApplication = RtGetAppPointer();
+}
\ No newline at end of file
diff --git a/Usr/Sys/CoreSystem/Sources/File.c b/Usr/Sys/CoreSystem/Sources/File.c
new file mode 100644
index 00000000..6e0e810a
--- /dev/null
+++ b/Usr/Sys/CoreSystem/Sources/File.c
@@ -0,0 +1,69 @@
+/* -------------------------------------------
+
+	Copyright SoftwareLabs
+
+------------------------------------------- */
+
+#include <Headers/Defines.h>
+#include <Headers/File.h>
+
+enum FileOp
+{
+	kFlushFile,
+	kReadFork,
+	kWriteFork,
+	kOpenFork,
+	kCloseFork,
+};
+
+/// @brief Opens a new file.
+/// @param path where to find it.
+/// @param rest the restrict (rw, rwe, r+, w+, r, w)
+/// @return FSRef the file.
+CS_EXTERN_C FSRef CSOpenFile(const CharacterTypeUTF8* path,
+							 const CharacterTypeUTF8* rest)
+{
+	CS_MUST_PASS(kSharedApplication);
+	CS_MUST_PASS(path && CSIsValidPath(path) == Yes);
+	CS_MUST_PASS(rest);
+
+	return kSharedApplication->Invoke(kSharedApplication, kCallOpenFile, path,
+									  rest);
+}
+
+/// @brief Closes the file and flushes it to the said file.
+/// @param refCS the filesystem reference.
+/// @return
+CS_EXTERN_C VoidType CSCloseFile(FSRef refCS)
+{
+	CS_MUST_PASS(kSharedApplication);
+
+	CSFlushFile(refCS);
+
+	kSharedApplication->Invoke(kSharedApplication, kCallCloseFile, refCS);
+}
+
+/// @brief Flush file
+/// @param refCS the file reference.
+/// @return 
+CS_EXTERN_C VoidType CSFlushFile(FSRef refCS)
+{
+	CS_MUST_PASS(kSharedApplication);
+
+	kSharedApplication->Invoke(kSharedApplication, refCS, kFlushFile);
+}
+
+/// @brief Check if filesystem path is valid.
+/// @param path 
+/// @return 
+CS_EXTERN_C BooleanType CSIsValidPath(const CharacterTypeUTF8* path)
+{
+	CS_MUST_PASS(kSharedApplication);
+	CS_MUST_PASS(path);
+
+	return kSharedApplication->Invoke(kSharedApplication, kCallFileExists, path) ||
+			kSharedApplication->Invoke(kSharedApplication, kCallDirectoryExists, path) ||
+			kSharedApplication->Invoke(kSharedApplication, kCallSymlinkExists, path) ||
+			kSharedApplication->Invoke(kSharedApplication, kCallDriveExists, path) ||
+			kSharedApplication->Invoke(kSharedApplication, kCallDeviceExists, path);
+}
\ No newline at end of file
diff --git a/Usr/Sys/CoreSystem/Sources/Heap.c b/Usr/Sys/CoreSystem/Sources/Heap.c
new file mode 100644
index 00000000..e7a77ba5
--- /dev/null
+++ b/Usr/Sys/CoreSystem/Sources/Heap.c
@@ -0,0 +1,54 @@
+/* -------------------------------------------
+
+	Copyright SoftwareLabs
+
+------------------------------------------- */
+
+#include <Headers/Defines.h>
+#include <Headers/Heap.h>
+
+/// @brief Allocate from the user's heap.
+/// @param sz size of object.
+/// @param flags flags.
+/// @return
+CS_EXTERN_C PtrVoidType CSAllocateHeap(QWordType sz, DWordType flags)
+{
+	CS_MUST_PASS(kSharedApplication);
+	CS_MUST_PASS(sz);
+	CS_MUST_PASS(flags);
+
+	return (PtrVoidType)kSharedApplication->Invoke(kSharedApplication,
+												   kCallAllocPtr, sz, flags);
+}
+
+/// @brief Free pointer from the user's heap.
+/// @param ptr the pointer to free.
+CS_EXTERN_C VoidType CSFreeHeap(PtrVoidType ptr)
+{
+	CS_MUST_PASS(kSharedApplication);
+	CS_MUST_PASS(ptr);
+
+	CS_UNREFERENCED_PARAMETER(
+		kSharedApplication->Invoke(kSharedApplication, kCallFreePtr, ptr));
+}
+
+/// @brief Get pointer size.
+/// @param ptr the pointer to find.
+/// @return the size.
+CS_EXTERN_C QWordType CSGetHeapSize(PtrVoidType ptr)
+{
+	CS_MUST_PASS(kSharedApplication);
+
+	CS_MUST_PASS(ptr);
+	return kSharedApplication->Invoke(kSharedApplication, kCallSizePtr, ptr);
+}
+
+/// @brief Check if the pointer exists.
+/// @param ptr the pointer to check.
+/// @return if it exists
+CS_EXTERN_C BooleanType CSIsHeapValid(PtrVoidType ptr)
+{
+	CS_MUST_PASS(kSharedApplication);
+	CS_MUST_PASS(ptr);
+	return kSharedApplication->Invoke(kSharedApplication, kCallCheckPtr, ptr);
+}
diff --git a/Usr/Sys/CoreSystem/Sources/Math.c b/Usr/Sys/CoreSystem/Sources/Math.c
new file mode 100644
index 00000000..19df42f3
--- /dev/null
+++ b/Usr/Sys/CoreSystem/Sources/Math.c
@@ -0,0 +1,14 @@
+/* -------------------------------------------
+
+	Copyright SoftwareLabs
+
+------------------------------------------- */
+
+#include <Headers/Math.h>
+
+/// @brief Number generator helper.
+/// @return Random generated number.
+CS_EXTERN_C SizeType MathRand(VoidType)
+{
+	return kSharedApplication->Invoke(kSharedApplication, kCallRandomNumberGenerator);
+}
\ No newline at end of file
diff --git a/Usr/Sys/CoreSystem/Sources/Thread.c b/Usr/Sys/CoreSystem/Sources/Thread.c
new file mode 100644
index 00000000..7d00bf9e
--- /dev/null
+++ b/Usr/Sys/CoreSystem/Sources/Thread.c
@@ -0,0 +1,9 @@
+/* -------------------------------------------
+
+	Copyright SoftwareLabs
+
+------------------------------------------- */
+
+#include <Headers/Thread.h>
+
+ThreadRef kMainThread = 0;
diff --git a/Usr/Sys/CoreSystem/amd64.mk b/Usr/Sys/CoreSystem/amd64.mk
new file mode 100644
index 00000000..e64de90f
--- /dev/null
+++ b/Usr/Sys/CoreSystem/amd64.mk
@@ -0,0 +1,22 @@
+##################################################
+# (C) SoftwareLabs, all rights reserved.
+# This is the CoreSystem Makefile.
+##################################################
+
+CC=x86_64-w64-mingw32-gcc
+AR=x86_64-w64-mingw32-ar
+CCINC=-I./
+CCFLAGS=-D__SINGLE_PRECISION__ -nostdlib -std=c17 -ffreestanding -Xlinker --subsystem=17 -e __DllMainCRTStartup -shared
+OUTPUT=CoreSystem.lib
+
+.PHONY: all
+all: build-core-amd64
+	@echo "[CoreSystem.lib] Build done."
+
+.PHONY: build-core-amd64
+build-core-amd64:
+	$(CC) $(CCINC) $(CCFLAGS) $(wildcard Sources/*.c) $(wildcard AMD64/*.s) -o $(OUTPUT)
+
+.PHONY: clean
+clean:
+	rm -f $(wildcard *.lib)
diff --git a/Usr/Sys/CoreSystem/compile_flags.txt b/Usr/Sys/CoreSystem/compile_flags.txt
new file mode 100644
index 00000000..749a500e
--- /dev/null
+++ b/Usr/Sys/CoreSystem/compile_flags.txt
@@ -0,0 +1,4 @@
+-I./
+-I../
+-I../../../Kernel
+-std=c17