Move examples to libvm source base and add symlink to root directory

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

src/libvm/examples/deadbeef.asm

@@ -0,0 +1,47 @@
+.section data $0x1000 {
+    dead: .u16 $0xDEAD
+    beef: .u16 $0xBEEF
+
+    .export dead
+    .export beef
+}
+
+.section code $0x0 {
+    main:
+        mov %ivt, ivt
+        or %flags, $0b100
+        mov %r0, $0xDEAD
+        shl %r0, $16
+        ; move 32 bits at 'beef' to %r01
+        ; TODO(syntax)
+        mov %r1, (beef)u32
+        or %r0, %r01
+        cmpeq %r0, $0xDEADBEEF
+        ; jump to the address 'end'
+        jnz end
+        mov %status, $1
+    end:
+        div %r0, $0
+        halt
+    .export main
+
+}
+
+.section iv $0x2800 {
+    dz:
+        mov %status, $255
+        halt
+
+    .export dz
+}
+
+.section ivt $0x2000 .. $0x2800 {
+    ivt:
+    .interrupt $1, dz               ; Divide by zero
+
+    .export ivt
+}
+
+.meta {
+    entry: main
+}