diff --git a/HelloWorld/src/HelloWorld.c b/HelloWorld/src/HelloWorld.c
new file mode 100644
index 0000000..d83edde
--- /dev/null
+++ b/HelloWorld/src/HelloWorld.c
@@ -0,0 +1,11 @@
+#include <stdio.h>
+
+extern int my_function(int a, int b);
+
+int main()
+{
+    int a = 6;
+    int b = 4;
+    printf("Calling assembly function my_function with x0=%d and x1=%d results in %d\n", a, b, my_function(a, b));
+    return (0);
+}
diff --git a/HelloWorld/src/my_assembly.s b/HelloWorld/src/my_assembly.s
new file mode 100644
index 0000000..f38cd19
--- /dev/null
+++ b/HelloWorld/src/my_assembly.s
@@ -0,0 +1,6 @@
+    .global    my_function
+    .type      my_function, "function"
+    .p2align   4
+my_function:
+    add        x0, x0, x1
+    ret