From 975a9ec96e282e437ccc1bdf1e660dcbf4542791 Mon Sep 17 00:00:00 2001
From: EmulatedSeasons <89668582+EmulatedSeasons@users.noreply.github.com>
Date: Fri, 10 May 2024 01:44:59 -0400
Subject: Added GDT and basic IDT as well as a bitmap drawing function

---
 kernel/arch/x86_64/load_desc.asm | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 kernel/arch/x86_64/load_desc.asm

(limited to 'kernel/arch/x86_64/load_desc.asm')

diff --git a/kernel/arch/x86_64/load_desc.asm b/kernel/arch/x86_64/load_desc.asm
new file mode 100644
index 0000000..df65c72
--- /dev/null
+++ b/kernel/arch/x86_64/load_desc.asm
@@ -0,0 +1,29 @@
+; GDT and IDT loading routines
+
+section .text
+global load_gdt:function
+load_gdt:
+    lgdt [rdi]
+    ret
+
+global reload_segments:function
+reload_segments:
+    ; reload cs register
+    push 0x08
+    lea rax, [rel .reload_cs]
+    push rax
+    retfq
+
+.reload_cs:
+    mov ax, 0x10
+    mov ds, ax
+    mov es, ax
+    mov fs, ax
+    mov gs, ax
+    mov ss, ax
+    ret
+
+global load_idt:function
+load_idt:
+    lidt [rdi]
+    ret
\ No newline at end of file
-- 
cgit v1.2.3-70-g09d2