From d7c4536c91ddd307fc9b99984ac49b5b5459b485 Mon Sep 17 00:00:00 2001
From: Camil Staps
Date: Mon, 30 Nov 2015 22:08:58 +0100
Subject: Assignment 2, 3

---
 CamilStaps-s4498062-Assignment-2/ex2/hello-cr4.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 CamilStaps-s4498062-Assignment-2/ex2/hello-cr4.c

(limited to 'CamilStaps-s4498062-Assignment-2/ex2/hello-cr4.c')

diff --git a/CamilStaps-s4498062-Assignment-2/ex2/hello-cr4.c b/CamilStaps-s4498062-Assignment-2/ex2/hello-cr4.c
new file mode 100644
index 0000000..9db671d
--- /dev/null
+++ b/CamilStaps-s4498062-Assignment-2/ex2/hello-cr4.c
@@ -0,0 +1,22 @@
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Camil Staps");
+MODULE_DESCRIPTION("A Simple Hello World module");
+
+static int __init hello_init(void) {
+    unsigned long long result;
+    __asm__("movq %%cr4, %%rax\n" : "=a"(result));
+    printk(KERN_INFO "Hello world! CR4 = %11x\n", result);
+    return 0;
+}
+
+static void __exit hello_cleanup(void) {
+    printk(KERN_INFO "Cleaning up module.\n");
+}
+
+module_init(hello_init);
+module_exit(hello_cleanup);
+
-- 
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