Merged in MHR-23 (pull request #14)

Draft: MHR-23

1 files changed, 106 insertions, 0 deletions

diff --git a/Kernel/Sources/PEFSharedObject.cxx b/Kernel/Sources/PEFSharedObject.cxx
new file mode 100644
index 00000000..06825a3c
--- /dev/null
+++ b/Kernel/Sources/PEFSharedObject.cxx
@@ -0,0 +1,106 @@
+/*
+ * ========================================================
+ *
+ * NewOS
+ * Copyright SoftwareLabs, all rights reserved.
+ *
+ *  ========================================================
+ */
+
+#include <KernelKit/DebugOutput.hpp>
+#include <KernelKit/PEF.hpp>
+#include <KernelKit/PEFSharedObject.hxx>
+#include <KernelKit/ProcessScheduler.hxx>
+#include <KernelKit/ThreadLocalStorage.hxx>
+#include <NewKit/Defines.hpp>
+
+/* -------------------------------------------
+
+ Revision History:
+
+	 01/02/24: Rework shared library ABI, except a rt_library_init and
+ rt_library_free (amlel) 15/02/24: Breaking changes, changed the name of the
+ routines. (amlel)
+
+ ------------------------------------------- */
+
+using namespace NewOS;
+
+/***********************************************************************************/
+/// @file SharedObjectRT.cxx
+/// @brief Shared Object runtime.
+/***********************************************************************************/
+
+/***********************************************************************************/
+/* @brief Library runtime initializer. */
+/***********************************************************************************/
+
+EXTERN_C SharedObjectPtr rt_library_init(void)
+{
+	SharedObjectPtr library = tls_new_class<SharedObject>();
+
+	if (!library)
+	{
+		ProcessScheduler::The().Leak().GetCurrent().Leak().Crash();
+
+		return nullptr;
+	}
+
+	library->Mount(tls_new_class<SharedObject::SharedObjectTrait>());
+
+	if (!library->Get())
+	{
+		ProcessScheduler::The().Leak().GetCurrent().Leak().Crash();
+
+		return nullptr;
+	}
+
+	library->Get()->fImageObject =
+		ProcessScheduler::The().Leak().GetCurrent().Leak().Image;
+
+	if (!library->Get()->fImageObject)
+	{
+		ProcessScheduler::The().Leak().GetCurrent().Leak().Crash();
+
+		return nullptr;
+	}
+
+	library->Get()->fImageEntrypointOffset =
+		library->Load<VoidPtr>(kPefStart, rt_string_len(kPefStart, 0), kPefCode);
+
+	return library;
+}
+
+/***********************************************************************************/
+/* @brief Ends the library. */
+/* @note Please check if the lib got freed! */
+/* @param SharedObjectPtr the library to free. */
+/***********************************************************************************/
+
+EXTERN_C Void rt_library_free(SharedObjectPtr lib, bool* successful)
+{
+	MUST_PASS(successful);
+
+	// sanity check (will also trigger a bug check if this fails)
+	if (lib == nullptr)
+	{
+		*successful = false;
+		ProcessScheduler::The().Leak().GetCurrent().Leak().Crash();
+	}
+
+	delete lib->Get();
+	delete lib;
+
+	lib = nullptr;
+
+	*successful = true;
+}
+
+/***********************************************************************************/
+
+/// @brief Unimplemented function (crashes by default)
+/// @param
+EXTERN_C void __mh_purecall(void)
+{
+	kcout << "newoskrnl: unimplemented symbol!\r";
+}