Assignment 2, 3

1 files changed, 22 insertions, 0 deletions

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);
+