X-Git-Url: http://git.joshuawise.com/netwatch.git/blobdiff_plain/2cd64cbf2e235c588ffee9f3de974903d5e7087e..9e2a82e4e9495f33b8e6423c335a9a157f056254:/aseg-paging/vm_flags.h?ds=sidebyside

diff --git a/aseg-paging/vm_flags.h b/aseg-paging/vm_flags.h
new file mode 100644
index 0000000..d89c9a8
--- /dev/null
+++ b/aseg-paging/vm_flags.h
@@ -0,0 +1,38 @@
+/** Page table and page directory flags.
+ *
+ *  From intel-sys.pdf.
+ *
+ *  @author Jacob Potter (jdpotter)
+ */
+
+#ifndef _VM_FLAGS_H
+#define _VM_FLAGS_H
+
+#define PDE_4M_ADDR_SHIFT       22
+#define PTE_4K_ADDR_SHIFT       12
+#define PDE_TABLE_ADDR_SHIFT    12
+#define PTE_FRAME_ADDR_MASK     (~((1 << PTE_4K_ADDR_SHIFT) - 1))
+#define PDE_TABLE_ADDR_MASK     (~((1 << PDE_TABLE_ADDR_SHIFT) - 1))
+
+#define PDE_ATTRIB_INDEX	(1 << 12)
+#define PDE_GLOBAL		(1 << 8)
+#define PDE_PAGE_SIZE		(1 << 7)
+#define PDE_DIRTY		(1 << 6)
+#define PDE_ACCESSED		(1 << 5)
+#define PDE_NO_CACHE		(1 << 4)
+#define PDE_WRITE_THROUGH	(1 << 3)
+#define PDE_USER		(1 << 2)
+#define PDE_READ_WRITE		(1 << 1)
+#define PDE_PRESENT		(1 << 0)
+
+#define PTE_GLOBAL		(1 << 8)
+#define PTE_ATTRIB_INDEX	(1 << 7)
+#define PTE_DIRTY		(1 << 6)
+#define PTE_ACCESSED		(1 << 5)
+#define PTE_NO_CACHE		(1 << 4)
+#define PTE_WRITE_THROUGH	(1 << 3)
+#define PTE_USER		(1 << 2)
+#define PTE_READ_WRITE		(1 << 1)
+#define PTE_PRESENT		(1 << 0)
+
+#endif /* _VM_FLAGS_H */