From d4522b8e9854178473adcea0fbb84f23f6e744bd Mon Sep 17 00:00:00 2001
From: Felipe Boeira <felipe.boeira@liu.se>
Date: Tue, 8 Jan 2019 18:39:03 +0100
Subject: Initial commit

---
 src/userprog/exception.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 src/userprog/exception.h

(limited to 'src/userprog/exception.h')

diff --git a/src/userprog/exception.h b/src/userprog/exception.h
new file mode 100644
index 0000000..f83e615
--- /dev/null
+++ b/src/userprog/exception.h
@@ -0,0 +1,12 @@
+#ifndef USERPROG_EXCEPTION_H
+#define USERPROG_EXCEPTION_H
+
+/* Page fault error code bits that describe the cause of the exception.  */
+#define PF_P 0x1    /* 0: not-present page. 1: access rights violation. */
+#define PF_W 0x2    /* 0: read, 1: write. */
+#define PF_U 0x4    /* 0: kernel, 1: user process. */
+
+void exception_init (void);
+void exception_print_stats (void);
+
+#endif /* userprog/exception.h */
-- 
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