scratch.lisp

;;; E means a r/m byte
;;; b means a byte regardless of operand code
;;; L means Lock prefix is valid
;;; r means r/m bit has part of the opcode
;;; d means bit 1 for direction is present
;;; w means bit 0 for operand size is present
(binop add #x00 r (d w) 
       (operand E b) (operand G b)
       (:x L)
       ;; arch defaults to *default-arch* which can be set in a (let ...)
       (:arch :x86)
       ;; instruction set if applicable.
       (:set :blah)
       (:groups general arithmatic binary)
       (:documentation "Some documentation....")
       (:cost "some assembler indication of cost, various papers I have
       researched give a general idea across several different x86
       brands."))