Raymond Toy pushed to branch issue-97-define-ud2-inst at cmucl / cmucl

Commits:

• 73e864e8
  by Raymond Toy at 2021-03-20T09:09:29-07:00

  Fix disassembly of break inst
  
  The code field for the break instruction had the wrong byte position.
  It was (byte 8 8), but it should be (byte 8 16).
  
  `(disassemble 'lisp::halt)` works now.
  

1 changed file:

• src/compiler/x86/insts.lisp

Changes:

 (disassem:define-instruction-format (break 24 :default-printer '(:name :tab code))

   (op :fields (list (byte 8 0) (byte 8 8)) :value '(#xb00001111 #b00001011))

-  (code :field (byte 8 8)))

+  (code :field (byte 8 16)))

 (define-emitter emit-break-inst 24

   (byte 8 0) (byte 8 8) (byte 8 16))