src/compiler/x86/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 eax-offset
  21                :target result
  22                :from :eval
  23                :to (:result 0))
  24               eax)
  25   #!+darwin
  26   (:temporary (:sc unsigned-reg
  27                    :offset esi-offset)
  28               prev-stack-pointer)
  29   (:results (result :scs (descriptor-reg)))
  30   (:save-p t)
  31   (:generator 100
  32     #!-darwin
  33     (inst push object)
  34     #!+darwin
  35     (progn
  36       ;; the stack should be 16-byte aligned on Darwin
  37       (inst mov prev-stack-pointer esp-tn)
  38       (inst sub esp-tn n-word-bytes)
  39       (align-stack-pointer esp-tn)
  40       (storew object esp-tn))
  41     (inst lea eax (make-fixup "debug_print" :foreign))
  42     (inst call (make-fixup "call_into_c" :foreign))
  43     #!-darwin
  44     (inst add esp-tn n-word-bytes)
  45     #!+darwin
  46     (inst mov esp-tn prev-stack-pointer)
  47     (move result eax)))