From da094d011f52a8f1ce879810cd1a4bbbe34f08d4 Mon Sep 17 00:00:00 2001
From: Tyler Murphy <=>
Date: Sat, 22 Jul 2023 11:05:30 -0400
Subject: paging is not very fun

---
 kernel/include/arch/i686/paging.h | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 kernel/include/arch/i686/paging.h

(limited to 'kernel/include/arch/i686/paging.h')

diff --git a/kernel/include/arch/i686/paging.h b/kernel/include/arch/i686/paging.h
new file mode 100644
index 0000000..3c0c335
--- /dev/null
+++ b/kernel/include/arch/i686/paging.h
@@ -0,0 +1,33 @@
+#pragma once
+
+#include <stddef.h>
+
+struct page_directory_t { // 32 bits
+    unsigned int present       : 1;
+    unsigned int rw_flag       : 1;
+    unsigned int access_lvl    : 1; //0 is for only ring0. 1 is for anybody.
+    unsigned int write_through : 1;
+    unsigned int cache_off     : 1;
+    unsigned int accessed      : 1;
+    unsigned int zero          : 1;
+    unsigned int page_size     : 1;
+    unsigned int unused        : 4;
+    unsigned int tbl_addr      : 20;
+};
+
+struct page_table_t {  // 32 bits
+    unsigned int present       : 1;
+    unsigned int rw_flag       : 1;
+    unsigned int access_lvl    : 1; //0 is for only ring0. 1 is for anybody.
+    unsigned int write_through : 1;
+    unsigned int cache_off     : 1;
+    unsigned int accessed      : 1;
+    unsigned int dirty         : 1;
+    unsigned int zero          : 1;
+    unsigned int global        : 1;
+    unsigned int reserved      : 3;
+    unsigned int phys_addr     : 20;
+};
+
+extern void ident_map_addr(void *addr, size_t len);
+extern void ident_unmap_addr(void *addr, size_t len);
-- 
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