From 6ed8a39c1bd3083297b41e981a2bf4bdbe2abd1f Mon Sep 17 00:00:00 2001
From: Amlal El Mahrouss <amlal.elmahrouss@icloud.com>
Date: Thu, 21 Nov 2024 08:50:57 +0100
Subject: IMP: Add UserProcessImage structure to hold the code/entrypoint of
 the process. IMP: Use IDLLObject instead of IPEFDLLObject. IMP: Refactor
 DeviceInterface to IDeviceObject. ADD: rt_jump_to_address when you want to
 use a custom stack.

Signed-off-by: Amlal El Mahrouss <amlal.elmahrouss@icloud.com>
---
 dev/ZKAKit/KernelKit/DebugOutput.h          |  2 +-
 dev/ZKAKit/KernelKit/DeviceMgr.h            | 20 ++++++++--------
 dev/ZKAKit/KernelKit/UserProcessScheduler.h | 37 +++++++++++++++++++----------
 3 files changed, 36 insertions(+), 23 deletions(-)

(limited to 'dev/ZKAKit/KernelKit')

diff --git a/dev/ZKAKit/KernelKit/DebugOutput.h b/dev/ZKAKit/KernelKit/DebugOutput.h
index b268d874..da37d3a0 100644
--- a/dev/ZKAKit/KernelKit/DebugOutput.h
+++ b/dev/ZKAKit/KernelKit/DebugOutput.h
@@ -39,7 +39,7 @@ namespace Kernel
 	{
 	public:
 		TerminalDevice(void (*print)(const Char*), void (*get)(const Char*))
-			: DeviceInterface<const Char*>(print, get)
+			: IDeviceObject<const Char*>(print, get)
 		{
 		}
 
diff --git a/dev/ZKAKit/KernelKit/DeviceMgr.h b/dev/ZKAKit/KernelKit/DeviceMgr.h
index cbdfb542..a7b7a2d0 100644
--- a/dev/ZKAKit/KernelKit/DeviceMgr.h
+++ b/dev/ZKAKit/KernelKit/DeviceMgr.h
@@ -24,39 +24,39 @@
 
 #define kDeviceMgrRootDirPath "/Devices/"
 
-#define ZKA_DEVICE : public ::Kernel::DeviceInterface
+#define ZKA_DEVICE : public ::Kernel::IDeviceObject
 
 // Last Rev: Wed, Apr  3, 2024  9:09:41 AM
 
 namespace Kernel
 {
 	template <typename T>
-	class DeviceInterface;
+	class IDeviceObject;
 
 	/***********************************************************************************/
 	/// @brief Device contract interface, represents an HW device.
 	/***********************************************************************************/
 	template <typename T>
-	class DeviceInterface
+	class IDeviceObject
 	{
 	public:
-		explicit DeviceInterface(void (*Out)(T), void (*In)(T))
+		explicit IDeviceObject(void (*Out)(T), void (*In)(T))
 			: fOut(Out), fIn(In) {}
 
-		virtual ~DeviceInterface() = default;
+		virtual ~IDeviceObject() = default;
 
 	public:
-		DeviceInterface& operator=(const DeviceInterface<T>&) = default;
-		DeviceInterface(const DeviceInterface<T>&)			  = default;
+		IDeviceObject& operator=(const IDeviceObject<T>&) = default;
+		IDeviceObject(const IDeviceObject<T>&)			  = default;
 
 	public:
-		virtual DeviceInterface<T>& operator<<(T Data)
+		virtual IDeviceObject<T>& operator<<(T Data)
 		{
 			fOut(Data);
 			return *this;
 		}
 
-		virtual DeviceInterface<T>& operator>>(T Data)
+		virtual IDeviceObject<T>& operator>>(T Data)
 		{
 			fIn(Data);
 			return *this;
@@ -64,7 +64,7 @@ namespace Kernel
 
 		virtual const char* Name() const
 		{
-			return "DeviceInterface";
+			return "IDeviceObject";
 		}
 
 		operator bool()
diff --git a/dev/ZKAKit/KernelKit/UserProcessScheduler.h b/dev/ZKAKit/KernelKit/UserProcessScheduler.h
index 1c9f4a94..808a8457 100644
--- a/dev/ZKAKit/KernelKit/UserProcessScheduler.h
+++ b/dev/ZKAKit/KernelKit/UserProcessScheduler.h
@@ -27,10 +27,10 @@
 
 namespace Kernel
 {
-	//! @note Forward declarations.
+	//! @note Forward class declarations.
 
 	class UserProcess;
-	class IPEFDLLObject;
+	class IDLLObject;
 	class UserProcessTeam;
 	class UserProcessScheduler;
 	class UserProcessHelper;
@@ -39,7 +39,8 @@ namespace Kernel
 	typedef Int64 ProcessID;
 
 	//! @brief Local Process name length.
-	inline constexpr SizeT kProcessNameLen = 129U;
+	inline constexpr SizeT kProcessNameLen = 128U;
+	inline constexpr ProcessID kProcessInvalidID = -1;
 
 	//! @brief Local Process status enum.
 	enum class ProcessStatusKind : Int32
@@ -123,18 +124,32 @@ namespace Kernel
 		kRingCount	   = 5,
 	};
 
-	// Helper types.
+	/// @brief Helper type to describe a code image.
 	using ImagePtr = VoidPtr;
 
+	struct UserProcessImage
+	{
+		ImagePtr fCode;
+		ImagePtr fBlob;
+	
+		operator bool()
+		{
+			return this->fCode;
+		}
+
+		Bool HasImage()
+		{
+			return this->fBlob != nullptr;
+		}
+	};
+
 	/// @name UserProcess
-	/// @brief User process header.
+	/// @brief User process class.
 	/// Holds information about the running process/thread.
 	class UserProcess final
 	{
 	public:
-		explicit UserProcess(VoidPtr start_image);
-		explicit UserProcess() = default;
-
+		explicit UserProcess();
 		~UserProcess();
 
 	public:
@@ -148,10 +163,9 @@ namespace Kernel
 		AffinityKind	   Affinity{AffinityKind::kStandard};
 		ProcessStatusKind  Status{ProcessStatusKind::kDead};
 		UInt8*			   StackReserve{nullptr};
-		ImagePtr		   Code{nullptr};
-		ImagePtr		   ExecImg{nullptr};
+		UserProcessImage   Image;
 		SizeT			   StackSize{kSchedMaxStackSz};
-		IPEFDLLObject*	   PefDLLDelegate{nullptr};
+		IDLLObject*	   PefDLLDelegate{nullptr};
 		SizeT			   MemoryCursor{0};
 		SizeT			   MemoryLimit{kSchedMaxMemoryLimit};
 
@@ -306,7 +320,6 @@ namespace Kernel
 		STATIC Bool CanBeScheduled(const UserProcess& process);
 		STATIC ErrorOr<PID> TheCurrentPID();
 		STATIC SizeT		StartScheduling();
-		STATIC Void 		InitScheduler();
 	};
 
 	const UInt32& sched_get_exit_code(void) noexcept;
-- 
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