From 1bf5e324005ce7122a195af106cec656960648dc Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Sat, 10 Jul 2021 17:41:32 +0200
Subject: a sensible source structure

The idea is that src/kernel/ is only allowed to interface with the
hardware using whatever's defined in src/arch/generic.h. I'll probably
write a small script for checking this later on.

This is a giant commit so I've probably fucked something up. It boots
fine on Bochs and QEMU, so at least there's that.
---
 src/arch/i386/gdt.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 src/arch/i386/gdt.h

(limited to 'src/arch/i386/gdt.h')

diff --git a/src/arch/i386/gdt.h b/src/arch/i386/gdt.h
new file mode 100644
index 0000000..bcb9870
--- /dev/null
+++ b/src/arch/i386/gdt.h
@@ -0,0 +1,16 @@
+#pragma once
+
+enum {
+	SEG_null,
+	// order dictated by SYSENTER
+	SEG_r0code,
+	SEG_r0data,
+	SEG_r3code,
+	SEG_r3data,
+	SEG_TSS,
+
+	SEG_end
+};
+
+void gdt_init();
+void gdt_farjump(int segment);
-- 
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