src/compiler/mips/debug.lisp

   1 (in-package "SB!VM")
   2
   3
   4 (define-vop (debug-cur-sp)
   5   (:translate current-sp)
   6   (:policy :fast-safe)
   7   (:results (res :scs (sap-reg)))
   8   (:result-types system-area-pointer)
   9   (:generator 1
  10     (move res csp-tn)))
  11
  12 (define-vop (debug-cur-fp)
  13   (:translate current-fp)
  14   (:policy :fast-safe)
  15   (:results (res :scs (sap-reg)))
  16   (:result-types system-area-pointer)
  17   (:generator 1
  18     (move res cfp-tn)))
  19
  20 (define-vop (read-control-stack)
  21   (:translate stack-ref)
  22   (:policy :fast-safe)
  23   (:args (object :scs (sap-reg) :target sap)
  24          (offset :scs (any-reg)))
  25   (:arg-types system-area-pointer positive-fixnum)
  26   (:temporary (:scs (sap-reg) :from :eval) sap)
  27   (:results (result :scs (descriptor-reg)))
  28   (:result-types *)
  29   (:generator 5
  30     (inst add sap object offset)
  31     (inst lw result sap 0)
  32     (inst nop)))
  33
  34 (define-vop (read-control-stack-c)
  35   (:translate stack-ref)
  36   (:policy :fast-safe)
  37   (:args (object :scs (sap-reg)))
  38   (:info offset)
  39   (:arg-types system-area-pointer (:constant (signed-byte 14)))
  40   (:results (result :scs (descriptor-reg)))
  41   (:result-types *)
  42   (:generator 4
  43     (inst lw result object (* offset n-word-bytes))
  44     (inst nop)))
  45
  46 (define-vop (write-control-stack)
  47   (:translate %set-stack-ref)
  48   (:policy :fast-safe)
  49   (:args (object :scs (sap-reg) :target sap)
  50          (offset :scs (any-reg))
  51          (value :scs (descriptor-reg) :target result))
  52   (:arg-types system-area-pointer positive-fixnum *)
  53   (:results (result :scs (descriptor-reg)))
  54   (:result-types *)
  55   (:temporary (:scs (sap-reg) :from (:argument 1)) sap)
  56   (:generator 2
  57     (inst add sap object offset)
  58     (inst sw value sap 0)
  59     (move result value)))
  60
  61 (define-vop (write-control-stack-c)
  62   (:translate %set-stack-ref)
  63   (:policy :fast-safe)
  64   (:args (sap :scs (sap-reg))
  65          (value :scs (descriptor-reg) :target result))
  66   (:info offset)
  67   (:arg-types system-area-pointer (:constant (signed-byte 14)) *)
  68   (:results (result :scs (descriptor-reg)))
  69   (:result-types *)
  70   (:generator 1
  71     (inst sw value sap (* offset n-word-bytes))
  72     (move result value)))
  73
  74
  75 (define-vop (code-from-mumble)
  76   (:policy :fast-safe)
  77   (:args (thing :scs (descriptor-reg)))
  78   (:results (code :scs (descriptor-reg)))
  79   (:temporary (:scs (non-descriptor-reg)) temp)
  80   (:variant-vars lowtag)
  81   (:generator 5
  82     (let ((bogus (gen-label))
  83           (done (gen-label)))
  84       (loadw temp thing 0 lowtag)
  85       (inst srl temp n-widetag-bits)
  86       (inst beq temp bogus)
  87       (inst sll temp (1- (integer-length n-word-bytes)))
  88       (unless (= lowtag other-pointer-lowtag)
  89         (inst addu temp (- lowtag other-pointer-lowtag)))
  90       (inst subu code thing temp)
  91       (emit-label done)
  92       (assemble (*elsewhere*)
  93         (emit-label bogus)
  94         (inst b done)
  95         (move code null-tn t)))))
  96
  97 (define-vop (code-from-lra code-from-mumble)
  98   (:translate lra-code-header)
  99   (:variant other-pointer-lowtag))
 100
 101 (define-vop (code-from-fun code-from-mumble)
 102   (:translate fun-code-header)
 103   (:variant fun-pointer-lowtag))
 104
 105 (define-vop (make-lisp-obj)
 106   (:policy :fast-safe)
 107   (:translate make-lisp-obj)
 108   (:args (value :scs (unsigned-reg) :target result))
 109   (:arg-types unsigned-num)
 110   (:results (result :scs (descriptor-reg)))
 111   (:generator 1
 112     (move result value)))
 113
 114 (define-vop (get-lisp-obj-address)
 115   (:policy :fast-safe)
 116   (:translate get-lisp-obj-address)
 117   (:args (thing :scs (descriptor-reg) :target result))
 118   (:results (result :scs (unsigned-reg)))
 119   (:result-types unsigned-num)
 120   (:generator 1
 121     (move result thing)))
 122
 123 (define-vop (fun-word-offset)
 124   (:policy :fast-safe)
 125   (:translate fun-word-offset)
 126   (:args (fun :scs (descriptor-reg)))
 127   (:results (res :scs (unsigned-reg)))
 128   (:result-types positive-fixnum)
 129   (:generator 5
 130     (loadw res fun 0 fun-pointer-lowtag)
 131     (inst srl res n-widetag-bits)))