[IMP] DLLInterface class and also reworked SCI's API.

[IMP] Handover now gives the kernel image, for the OS.

Signed-off-by: Amlal El Mahrouss <amlal.elmahrouss@icloud.com>

1 files changed, 100 insertions, 0 deletions

diff --git a/dev/ZKA/Sources/PEFDLLInterface.cxx b/dev/ZKA/Sources/PEFDLLInterface.cxx
new file mode 100644
index 00000000..0ca6b85e
--- /dev/null
+++ b/dev/ZKA/Sources/PEFDLLInterface.cxx
@@ -0,0 +1,100 @@
+/*
+ * ========================================================
+ *
+ * newoskrnl
+ * Copyright ZKA Technologies., all rights reserved.
+ *
+ *  ========================================================
+ */
+
+#include <KernelKit/DebugOutput.hxx>
+#include <KernelKit/PEF.hxx>
+#include <KernelKit/PEFDLLInterface.hxx>
+#include <KernelKit/ProcessScheduler.hxx>
+#include <KernelKit/ThreadLocalStorage.hxx>
+#include <NewKit/Defines.hxx>
+
+/* -------------------------------------------
+
+ Revision History:
+
+	 01/02/24: Rework shared sharedObj ABI, except a rtl_init_shared_object and
+ rtl_fini_shared_object (amlel) 15/02/24: Breaking changes, changed the name of the
+ routines. (amlel)
+
+	07/28/24: Replace rt_library_free with rtl_fini_shared_object
+
+ ------------------------------------------- */
+
+using namespace Kernel;
+
+/***********************************************************************************/
+/// @file PEFSharedObjectRT.cxx
+/// @brief PEF's shared object runtime.
+/***********************************************************************************/
+
+/***********************************************************************************/
+/** @brief Library initializer. */
+/***********************************************************************************/
+
+EXTERN_C DLLInterfacePtr rtl_init_shared_object(PROCESS_HEADER_BLOCK* header)
+{
+	DLLInterfacePtr sharedObj = tls_new_class<PEFDLLInterface>();
+
+	if (!sharedObj)
+	{
+		header->Crash();
+
+		return nullptr;
+	}
+
+	sharedObj->Mount(tls_new_class<PEFDLLInterface::DLL_TRAITS>());
+
+	if (!sharedObj->Get())
+	{
+		header->Crash();
+
+		return nullptr;
+	}
+
+	sharedObj->Get()->fImageObject =
+		header->Image;
+
+	if (!sharedObj->Get()->fImageObject)
+	{
+		header->Crash();
+
+		return nullptr;
+	}
+
+	sharedObj->Get()->fImageEntrypointOffset =
+		sharedObj->Load<VoidPtr>(kPefStart, rt_string_len(kPefStart, 0), kPefCode);
+
+	return sharedObj;
+}
+
+/***********************************************************************************/
+/** @brief Frees the sharedObj. */
+/** @note Please check if the lib got freed! */
+/** @param lib The sharedObj to free. */
+/** @param successful Reports if successful or not. */
+/***********************************************************************************/
+
+EXTERN_C Void rtl_fini_shared_object(PROCESS_HEADER_BLOCK* header, DLLInterfacePtr lib, Bool* successful)
+{
+	MUST_PASS(successful);
+
+	// sanity check (will also trigger a bug check if this fails)
+	if (lib == nullptr)
+	{
+		*successful = false;
+		header->Crash();
+	}
+
+	delete lib->Get();
+	delete lib;
+
+	lib = nullptr;
+
+	*successful = true;
+}