kernel: add GKit, improve AMD64 HAL.

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

1 files changed, 47 insertions, 0 deletions

diff --git a/Private/HALKit/AMD64/HalPlatformAMD64.cpp b/Private/HALKit/AMD64/HalPlatformAMD64.cpp
new file mode 100644
index 00000000..f72be01f
--- /dev/null
+++ b/Private/HALKit/AMD64/HalPlatformAMD64.cpp
@@ -0,0 +1,47 @@
+/*
+ *	========================================================
+ *
+ *	HCore
+ * 	Copyright 2024 Mahrouss Logic, all rights reserved.
+ *
+ * 	========================================================
+ */
+
+#include <ArchKit/Arch.hpp>
+
+namespace HCore::HAL {
+namespace Detail {
+struct RegisterAMD64 final {
+  UIntPtr base;
+  UShort limit;
+};
+}  // namespace Detail
+
+void GDTLoader::Load(Register64 &gdt) {
+  Detail::RegisterAMD64 *reg = new Detail::RegisterAMD64();
+  MUST_PASS(reg);
+
+  reg->base = gdt.Base;
+  reg->limit = gdt.Limit;
+
+  rt_cli();
+  rt_load_gdt(reg);
+  rt_sti();
+}
+
+void IDTLoader::Load(Register64 &idt) {
+  Detail::RegisterAMD64 *reg = new Detail::RegisterAMD64();
+  MUST_PASS(reg);
+
+  reg->base = idt.Base;
+  reg->limit = idt.Limit;
+
+  rt_cli();
+  rt_load_idt(reg);
+  rt_sti();
+}
+
+void GDTLoader::Load(Ref<Register64> &gdt) { GDTLoader::Load(gdt.Leak()); }
+
+void IDTLoader::Load(Ref<Register64> &idt) { IDTLoader::Load(idt.Leak()); }
+}  // namespace HCore::HAL