src/compiler/sparc/debug.lisp

   1 ;;;; Sparc compiler support for the new whizzy debugger
   2
   3 ;;;; This software is part of the SBCL system. See the README file for
   4 ;;;; more information.
   5 ;;;;
   6 ;;;; This software is derived from the CMU CL system, which was
   7 ;;;; written at Carnegie Mellon University and released into the
   8 ;;;; public domain. The software is in the public domain and is
   9 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
  10 ;;;; files for more information.
  11
  12 (in-package "SB!VM")
  13
  14 (define-vop (debug-cur-sp)
  15   (:translate current-sp)
  16   (:policy :fast-safe)
  17   (:results (res :scs (sap-reg)))
  18   (:result-types system-area-pointer)
  19   (:generator 1
  20     (move res csp-tn)))
  21
  22 (define-vop (debug-cur-fp)
  23   (:translate current-fp)
  24   (:policy :fast-safe)
  25   (:results (res :scs (sap-reg)))
  26   (:result-types system-area-pointer)
  27   (:generator 1
  28     (move res cfp-tn)))
  29
  30 (define-vop (read-control-stack)
  31   (:translate sb!kernel:stack-ref)
  32   (:policy :fast-safe)
  33   (:args (sap :scs (sap-reg))
  34          (offset :scs (any-reg)))
  35   (:arg-types system-area-pointer positive-fixnum)
  36   (:results (result :scs (descriptor-reg)))
  37   (:result-types *)
  38   (:generator 5
  39     (inst ld result sap offset)))
  40
  41 (define-vop (write-control-stack)
  42   (:translate sb!kernel:%set-stack-ref)
  43   (:policy :fast-safe)
  44   (:args (sap :scs (sap-reg))
  45          (offset :scs (any-reg))
  46          (value :scs (descriptor-reg) :target result))
  47   (:arg-types system-area-pointer positive-fixnum *)
  48   (:results (result :scs (descriptor-reg)))
  49   (:result-types *)
  50   (:generator 5
  51     (inst st value sap offset)
  52     (move result value)))
  53
  54 (define-vop (code-from-mumble)
  55   (:policy :fast-safe)
  56   (:args (thing :scs (descriptor-reg)))
  57   (:results (code :scs (descriptor-reg)))
  58   (:temporary (:scs (non-descriptor-reg)) temp)
  59   (:variant-vars lowtag)
  60   (:generator 5
  61     (let ((bogus (gen-label))
  62           (done (gen-label)))
  63       (loadw temp thing 0 lowtag)
  64       (inst srl temp n-widetag-bits)
  65       (inst cmp temp)
  66       (inst b :eq bogus)
  67       (inst sll temp (1- (integer-length n-word-bytes)))
  68       (unless (= lowtag other-pointer-lowtag)
  69         (inst add temp (- lowtag other-pointer-lowtag)))
  70       (inst sub code thing temp)
  71       (emit-label done)
  72       (assemble (*elsewhere*)
  73         (emit-label bogus)
  74         (inst b done)
  75         (move code null-tn)))))
  76
  77 (define-vop (code-from-lra code-from-mumble)
  78   (:translate lra-code-header)
  79   (:variant other-pointer-lowtag))
  80
  81 (define-vop (code-from-function code-from-mumble)
  82   (:translate fun-code-header)
  83   (:variant fun-pointer-lowtag))
  84
  85 (define-vop (%make-lisp-obj)
  86   (:policy :fast-safe)
  87   (:translate %make-lisp-obj)
  88   (:args (value :scs (unsigned-reg) :target result))
  89   (:arg-types unsigned-num)
  90   (:results (result :scs (descriptor-reg)))
  91   (:generator 1
  92     (move result value)))
  93
  94 (define-vop (get-lisp-obj-address)
  95   (:policy :fast-safe)
  96   (:translate get-lisp-obj-address)
  97   (:args (thing :scs (descriptor-reg) :target result))
  98   (:results (result :scs (unsigned-reg)))
  99   (:result-types unsigned-num)
 100   (:generator 1
 101     (move result thing)))
 102
 103
 104 (define-vop (fun-word-offset)
 105   (:policy :fast-safe)
 106   (:translate fun-word-offset)
 107   (:args (fun :scs (descriptor-reg)))
 108   (:results (res :scs (unsigned-reg)))
 109   (:result-types positive-fixnum)
 110   (:generator 5
 111     (loadw res fun 0 fun-pointer-lowtag)
 112     (inst srl res n-widetag-bits)))