Improved build performance

src/asm/Pointer.go

@@ -0,0 +1,9 @@
+package asm
+
+// Pointer stores a relative memory address that we can later turn into an absolute one.
+// Position: The machine code offset where the address was inserted.
+// Address:  The offset inside the section.
+type Pointer struct {
+	Position uint32
+	Address  uint32
+}