src/compiler/mips/static-fn.lisp

   1 (in-package "SB!VM")
   2
   3
   4
   5 (define-vop (static-fun-template)
   6   (:save-p t)
   7   (:policy :safe)
   8   (:variant-vars symbol)
   9   (:vop-var vop)
  10   (:temporary (:scs (non-descriptor-reg)) temp)
  11   (:temporary (:scs (descriptor-reg)) move-temp)
  12   (:temporary (:sc descriptor-reg :offset lra-offset) lra)
  13   (:temporary (:sc interior-reg) entry-point)
  14   (:temporary (:sc any-reg :offset nargs-offset) nargs)
  15   (:temporary (:sc any-reg :offset ocfp-offset) ocfp)
  16   (:temporary (:sc control-stack :offset nfp-save-offset) nfp-save))
  17
  18
  19 (eval-when (#-sb-xc :compile-toplevel :load-toplevel :execute)
  20
  21 (defun static-fun-template-name (num-args num-results)
  22   (intern (format nil "~:@(~R-arg-~R-result-static-fun~)"
  23                   num-args num-results)))
  24
  25 (defun moves (dst src)
  26   (collect ((moves))
  27     (do ((dst dst (cdr dst))
  28          (src src (cdr src)))
  29         ((or (null dst) (null src)))
  30       (moves `(move ,(car dst) ,(car src))))
  31     (moves)))
  32
  33 (defun static-fun-template-vop (num-args num-results)
  34   (unless (and (<= num-args register-arg-count)
  35                (<= num-results register-arg-count))
  36     (error "either too many args (~W) or too many results (~W); max = ~W"
  37            num-args num-results register-arg-count))
  38   (let ((num-temps (max num-args num-results)))
  39     (collect ((temp-names) (temps) (arg-names) (args) (result-names) (results))
  40       (dotimes (i num-results)
  41         (let ((result-name (intern (format nil "RESULT-~D" i))))
  42           (result-names result-name)
  43           (results `(,result-name :scs (any-reg descriptor-reg)))))
  44       (dotimes (i num-temps)
  45         (let ((temp-name (intern (format nil "TEMP-~D" i))))
  46           (temp-names temp-name)
  47           (temps `(:temporary (:sc descriptor-reg
  48                                :offset ,(nth i *register-arg-offsets*)
  49                                ,@(when (< i num-args)
  50                                    `(:from (:argument ,i)))
  51                                ,@(when (< i num-results)
  52                                    `(:to (:result ,i)
  53                                      :target ,(nth i (result-names)))))
  54                               ,temp-name))))
  55       (dotimes (i num-args)
  56         (let ((arg-name (intern (format nil "ARG-~D" i))))
  57           (arg-names arg-name)
  58           (args `(,arg-name
  59                   :scs (any-reg descriptor-reg null zero)
  60                   :target ,(nth i (temp-names))))))
  61       `(define-vop (,(static-fun-template-name num-args num-results)
  62                     static-fun-template)
  63          (:args ,@(args))
  64          ,@(temps)
  65          (:results ,@(results))
  66          (:generator ,(+ 50 num-args num-results)
  67            (let ((lra-label (gen-label))
  68                  (cur-nfp (current-nfp-tn vop)))
  69              ,@(moves (temp-names) (arg-names))
  70              (inst li nargs (fixnumize ,num-args))
  71              (inst lw entry-point null-tn (static-fun-offset symbol))
  72              (when cur-nfp
  73                (store-stack-tn nfp-save cur-nfp))
  74              (move ocfp cfp-tn)
  75              (inst compute-lra-from-code lra code-tn lra-label temp)
  76              (note-this-location vop :call-site)
  77              (inst j entry-point)
  78              (move cfp-tn csp-tn t)
  79              (emit-return-pc lra-label)
  80              ,(collect ((bindings) (links))
  81                 (do ((temp (temp-names) (cdr temp))
  82                      (name 'values (gensym))
  83                      (prev nil name)
  84                      (i 0 (1+ i)))
  85                     ((= i num-results))
  86                   (bindings `(,name
  87                               (make-tn-ref ,(car temp) nil)))
  88                   (when prev
  89                     (links `(setf (tn-ref-across ,prev) ,name))))
  90                 `(let ,(bindings)
  91                    ,@(links)
  92                    (default-unknown-values vop
  93                        ,(if (zerop num-results) nil 'values)
  94                        ,num-results move-temp temp lra-label)))
  95              (when cur-nfp
  96                (load-stack-tn cur-nfp nfp-save))
  97              ,@(moves (result-names) (temp-names))))))))
  98
  99
 100 ) ; EVAL-WHEN
 101
 102
 103 (expand
 104  (collect ((templates (list 'progn)))
 105    (dotimes (i register-arg-count)
 106      (templates (static-fun-template-vop i 1)))
 107    (templates)))
 108
 109
 110 (defmacro define-static-fun (name args &key (results '(x)) translate
 111                              policy cost arg-types result-types)
 112   `(define-vop (,name
 113                 ,(static-fun-template-name (length args)
 114                                            (length results)))
 115      (:variant ',name)
 116      (:note ,(format nil "static-fun ~@(~S~)" name))
 117      ,@(when translate
 118          `((:translate ,translate)))
 119      ,@(when policy
 120          `((:policy ,policy)))
 121      ,@(when cost
 122          `((:generator-cost ,cost)))
 123      ,@(when arg-types
 124          `((:arg-types ,@arg-types)))
 125      ,@(when result-types
 126          `((:result-types ,@result-types)))))