Either a function object, a lambda expression or a symbol with a function definition.
If the function denoted by name-or-function is not compiled then it is first compiled using the function
compile. This happens if name-or-function is a lambda expression or an symbol naming an interpreted function.
The output from
disassemble lacks useful information such as local and lexical variable names. The representation of integers or characters or Lisp objects in general is not easily readable without detailed knowledge of the internals of the Lisp system and the host machine instruction set.
LispWorks User Guide and Reference Manual - 13 Feb 2015