src/compiler/x86-64/show.lisp

   1 ;;;; VOPs which are useful for following the progress of the system
   2 ;;;; early in boot
   3
   4 ;;;; This software is part of the SBCL system. See the README file for
   5 ;;;; more information.
   6 ;;;;
   7 ;;;; This software is derived from the CMU CL system, which was
   8 ;;;; written at Carnegie Mellon University and released into the
   9 ;;;; public domain. The software is in the public domain and is
  10 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
  11 ;;;; files for more information.
  12
  13 (in-package "SB!VM")
  14
  15 ;;; FIXME: should probably become conditional on #!+SB-SHOW
  16 ;;; FIXME: should be called DEBUG-PRINT or COLD-PRINT
  17 (define-vop (print)
  18   (:args (object :scs (descriptor-reg any-reg)))
  19   (:temporary (:sc unsigned-reg
  20                :offset rax-offset
  21                :target result
  22                :from :eval
  23                :to (:result 0))
  24               rax)
  25   (:temporary (:sc unsigned-reg) call-target)
  26   (:results (result :scs (descriptor-reg)))
  27   (:save-p t)
  28   (:generator 100
  29     (move rax object)
  30     (inst push rbp-tn)
  31     (inst mov rbp-tn rsp-tn)
  32     (inst push rbp-tn)
  33     (inst and rsp-tn -16)
  34     (storew rax rsp-tn)
  35     (inst lea rax (make-fixup "debug_print" :foreign))
  36     (inst lea call-target
  37           (make-ea :qword
  38                    :disp (make-fixup "call_into_c" :foreign)))
  39     (inst call call-target)
  40     (inst mov rsp-tn rbp-tn)
  41     (inst pop rbp-tn)
  42     (move result rax)))