asst0.diff

Index: kern/main/hello.c
===================================================================
--- kern/main/hello.c	(.../initial)	(revision 0)
+++ kern/main/hello.c	(.../trunk)	(revision 3)
@@ -0,0 +1,49 @@
+#include <types.h>
+#include <kern/errno.h>
+#include <kern/unistd.h>
+#include <lib.h>
+#include <test.h>
+
+extern void complex_hello(void);
+
+static char *my_kstrdup(const char *buf)
+{
+	char *ptr, *ret;
+
+	ret = ptr = kmalloc(strlen(buf) + 1);
+	if (ptr == NULL)
+		panic("kmalloc returned NULL");
+
+	for (; *buf != '\0'; ++ptr, ++buf)
+		*ptr = *buf;
+
+	*ptr = '\0';
+
+	return ret;
+}
+
+static int my_toupper(int c) 
+{
+	if (c >= 'a' && c <= 'z') 
+		return c - 'a' + 'A';
+
+	return c;
+}
+
+void complex_hello(void)
+{
+	const char *msg = "hello World!!!";
+	char *copy;
+
+	/* my_kstrdup never returns a NULL pointer, no need to check */
+	copy = my_kstrdup(msg);
+
+	/* We want 'Hello World!!!', need to capitalise the first letter */
+	copy[0] = my_toupper(copy[0]);
+
+	kprintf("%s\n", copy);
+
+	/* Free the allocated memory */
+	kfree(copy);
+}
+
Index: kern/main/main.c
===================================================================
--- kern/main/main.c	(.../initial)	(revision 3)
+++ kern/main/main.c	(.../trunk)	(revision 3)
@@ -213,7 +213,7 @@
 kmain(char *arguments)
 {
 	boot();
-
+	complex_hello();
 	menu(arguments);
 
 	/* Should not get here */
Index: kern/conf/conf.kern
===================================================================
--- kern/conf/conf.kern	(.../initial)	(revision 3)
+++ kern/conf/conf.kern	(.../trunk)	(revision 3)
@@ -386,6 +386,7 @@
 
 file      main/main.c
 file      main/menu.c
+file      main/hello.c
 
 ########################################
 #                                      #