From 8ba77bcd6941f94d41922d97e5cc050126964a0f Mon Sep 17 00:00:00 2001
From: Garritt McCune <glmccune@gmail.com>
Date: Sat, 12 Dec 2020 21:03:19 -0600
Subject: [PATCH] Added the start of the page structures.

---
 .gitignore              |  4 ++++
 build_numbers.c         |  2 +-
 includes/idt.h          |  4 ++--
 includes/page_structs.h | 19 +++++++++++++++++++
 4 files changed, 26 insertions(+), 3 deletions(-)
 create mode 100644 includes/page_structs.h

diff --git a/.gitignore b/.gitignore
index a9e2c49..1df7017 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,7 @@
 *.pdf
 *.aux
 *.gz
+.gitignore.save
+GPATH
+GRTAGS
+GTAGS
diff --git a/build_numbers.c b/build_numbers.c
index 7cbc7d7..bc0b29e 100644
--- a/build_numbers.c
+++ b/build_numbers.c
@@ -1,3 +1,3 @@
 #ifndef KERNEL_VERSION_NUMBER
-#define KERNEL_VERSION_NUMBER "0.0.3-46"
+#define KERNEL_VERSION_NUMBER "0.0.3-50"
 #endif
diff --git a/includes/idt.h b/includes/idt.h
index 5f6d81e..5e77ad8 100644
--- a/includes/idt.h
+++ b/includes/idt.h
@@ -9,7 +9,7 @@ struct idt_entry
     unsigned short base_hi;
 } __attribute__((packed));
 
-struct idt_ptr
+struct idt
 {
     unsigned short size;
     struct idt_entry* idt_entries_start;
@@ -17,5 +17,5 @@ struct idt_ptr
 
 void install_idt(void);
 void idt_set_gate(unsigned char, unsigned long, unsigned short, unsigned char);
-void load_idt(struct idt_ptr*);
+void load_idt(struct idt*);
 #endif
diff --git a/includes/page_structs.h b/includes/page_structs.h
new file mode 100644
index 0000000..84f3fb4
--- /dev/null
+++ b/includes/page_structs.h
@@ -0,0 +1,19 @@
+#ifndef PAGE_STRUCTS_H
+#define PAGE_STRUCTS_H
+
+enum X86_PTE_FLAGS
+{
+	X86_PTE_PRESENT = 0x01,
+	X86_PTE_WRITEABLE = 0x02,
+	X86_PTE_USER = 0x04,		          //User mode, 0 for supervisor mode, 1 for user mode.
+  X86_PTE_WRITETHROUGH = 0x08,  //
+	X86_PTE_NOT_CACHEABLE = 0x10, //
+  X86_PTE_ACCESSED = 0x20,
+  X86_PTE_DIRTY = 0x40,
+  X86_PTE_PAT = 0x80,
+  X86_PTE_CPU_GLOBAL = 0x100,
+  X86_PTE_LV4_GLOBAL = 0x200,
+  X86_PTE_FRAME = 0x7FFFF000
+};
+
+#endif