From f3992c78790af42c53ed149cf04751261393d8e8 Mon Sep 17 00:00:00 2001
From: Amlal El Mahrouss <amlalelmahrouss@icloud.com>
Date: Thu, 29 Feb 2024 16:32:49 +0100
Subject: Kernel: Pre-Release

- Kernel
- Bootloader

Working on AHCI support, AHCI is very important to bring fast I/O
support, ACPI and APIC is also in WiP for AMD64 HAL this time.

Signed-off-by: Amlal El Mahrouss <amlalelmahrouss@icloud.com>
---
 Private/HALKit/AMD64/HalDescriptorLoader.cpp | 57 +++++++++++++---------------
 1 file changed, 27 insertions(+), 30 deletions(-)

(limited to 'Private/HALKit/AMD64/HalDescriptorLoader.cpp')

diff --git a/Private/HALKit/AMD64/HalDescriptorLoader.cpp b/Private/HALKit/AMD64/HalDescriptorLoader.cpp
index fb41f654..8552b958 100644
--- a/Private/HALKit/AMD64/HalDescriptorLoader.cpp
+++ b/Private/HALKit/AMD64/HalDescriptorLoader.cpp
@@ -1,11 +1,8 @@
-/*
- *	========================================================
- *
- *	HCore
- * 	Copyright Mahrouss Logic, all rights reserved.
- *
- * 	========================================================
- */
+/* -------------------------------------------
+
+    Copyright Mahrouss Logic
+
+------------------------------------------- */
 
 #include <ArchKit/ArchKit.hpp>
 
@@ -25,6 +22,28 @@ STATIC ::HCore::Detail::AMD64::InterruptDescriptorAMD64
     kInterruptVectorTable[kKernelIdtSize];
 
 void IDTLoader::Load(Register64 &idt) {
+  volatile ::HCore::UIntPtr **baseIdt = (volatile ::HCore::UIntPtr **)idt.Base;
+
+  MUST_PASS(baseIdt[0]);
+
+  for (UInt16 i = 0; i < kKernelIdtSize; i++) {
+    kInterruptVectorTable[i].Selector = kGdtCodeSelector;
+    kInterruptVectorTable[i].Ist = 0x0;
+    kInterruptVectorTable[i].TypeAttributes = kInterruptGate;
+    kInterruptVectorTable[i].OffsetLow = ((UIntPtr)baseIdt[i] & 0xFFFF);
+    kInterruptVectorTable[i].OffsetMid = (((UIntPtr)baseIdt[i] >> 16) & 0xFFFF);
+    kInterruptVectorTable[i].OffsetHigh =
+        (((UIntPtr)baseIdt[i] >> 32) & 0xFFFFFFFF);
+    kInterruptVectorTable[i].Zero = 0x0;
+  }
+
+  kRegIdt.Base = (UIntPtr)kInterruptVectorTable;
+  kRegIdt.Limit = sizeof(::HCore::Detail::AMD64::InterruptDescriptorAMD64) *
+                      kKernelIdtSize -
+                  1;
+
+  rt_load_idt(kRegIdt);
+
   UInt8 a1, a2;
 
   a1 = HAL::In8(0x21);  // save masks
@@ -50,28 +69,6 @@ void IDTLoader::Load(Register64 &idt) {
   HAL::Out8(0x21, a1);
   HAL::rt_wait_400ns();
   HAL::Out8(0xA1, a2);
-
-  volatile ::HCore::UIntPtr **baseIdt = (volatile ::HCore::UIntPtr **)idt.Base;
-
-  MUST_PASS(baseIdt[0]);
-
-  for (UInt16 i = 0; i < kKernelIdtSize; i++) {
-    kInterruptVectorTable[i].Selector = kGdtCodeSelector;
-    kInterruptVectorTable[i].Ist = 0x0;
-    kInterruptVectorTable[i].TypeAttributes = kInterruptGate;
-    kInterruptVectorTable[i].OffsetLow = ((UIntPtr)baseIdt[i] & 0xFFFF);
-    kInterruptVectorTable[i].OffsetMid = (((UIntPtr)baseIdt[i] >> 16) & 0xFFFF);
-    kInterruptVectorTable[i].OffsetHigh =
-        (((UIntPtr)baseIdt[i] >> 32) & 0xFFFFFFFF);
-    kInterruptVectorTable[i].Zero = 0x0;
-  }
-
-  kRegIdt.Base = (UIntPtr)kInterruptVectorTable;
-  kRegIdt.Limit = sizeof(::HCore::Detail::AMD64::InterruptDescriptorAMD64) *
-                      kKernelIdtSize -
-                  1;
-
-  rt_load_idt(kRegIdt);
 }
 
 void GDTLoader::Load(Ref<RegisterGDT> &gdt) { GDTLoader::Load(gdt.Leak()); }
-- 
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