From ba2c07447ba1278d8ad38ca58a8ae94c82d2d008 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Sun, 28 Mar 2021 12:00:16 +0200
Subject: Added ring0 privileges to kernel processes

This enables a more efficient idling process using the hlt instruction.
The context-switching is a bit slower now, too. I have to look into that.
---
 kernel/inc/proc.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'kernel/inc')

diff --git a/kernel/inc/proc.h b/kernel/inc/proc.h
index eb972d3..71d1284 100644
--- a/kernel/inc/proc.h
+++ b/kernel/inc/proc.h
@@ -14,6 +14,8 @@
 #define EFLAGS_ALWAYS 0x2 // Always one
 #define EFLAGS_INTERRUPTS 0x200 // Enable interrupts
 
+#define GDT_SUPER_CODE_OFFSET 0x08 // Super (kernel) code segment offset in GDT
+#define GDT_SUPER_DATA_OFFSET 0x10 // Super (kernel) data segment offset in GDT
 #define GDT_USER_CODE_OFFSET 0x1b // User code segment offset in GDT (with ring3 mask)
 #define GDT_USER_DATA_OFFSET 0x23 // User data segment offset in GDT (with ring3 mask)
 
@@ -48,12 +50,12 @@ struct stream {
 struct proc {
 	u32 pid;
 	u32 entry;
-	u8 priv;
 	char name[32];
 	struct stream streams[4];
 	struct page_dir *page_dir;
 	struct regs regs;
 	struct proc_wait wait; // dev_id
+	enum proc_priv priv;
 	enum proc_state state;
 	struct stack *messages;
 	struct list *memory;
-- 
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