1 ;;; Written by William Lott.
7 (define-vop (static-fun-template)
10 (:variant-vars symbol)
12 (:temporary (:scs (non-descriptor-reg)) temp)
13 (:temporary (:scs (descriptor-reg)) move-temp)
14 (:temporary (:sc descriptor-reg :offset lra-offset) lra)
15 (:temporary (:sc interior-reg :offset lip-offset) entry-point)
16 (:temporary (:scs (descriptor-reg)) func)
17 (:temporary (:sc any-reg :offset nargs-offset) nargs)
18 (:temporary (:sc any-reg :offset ocfp-offset) old-fp)
19 (:temporary (:sc control-stack :offset nfp-save-offset) nfp-save))
22 (eval-when (:compile-toplevel :load-toplevel :execute)
25 (defun static-fun-template-name (num-args num-results)
26 (intern (format nil "~:@(~R-arg-~R-result-static-fun~)"
27 num-args num-results)))
30 (defun moves (dst src)
32 (do ((dst dst (cdr dst))
34 ((or (null dst) (null src)))
35 (moves `(move ,(car dst) ,(car src))))
38 (defun static-fun-template-vop (num-args num-results)
39 (assert (and (<= num-args register-arg-count)
40 (<= num-results register-arg-count))
41 (num-args num-results)
42 "Either too many args (~W) or too many results (~W). Max = ~W"
43 num-args num-results register-arg-count)
44 (let ((num-temps (max num-args num-results)))
45 (collect ((temp-names) (temps) (arg-names) (args) (result-names) (results))
46 (dotimes (i num-results)
47 (let ((result-name (intern (format nil "RESULT-~D" i))))
48 (result-names result-name)
49 (results `(,result-name :scs (any-reg descriptor-reg)))))
50 (dotimes (i num-temps)
51 (let ((temp-name (intern (format nil "TEMP-~D" i))))
52 (temp-names temp-name)
53 (temps `(:temporary (:sc descriptor-reg
54 :offset ,(nth i *register-arg-offsets*)
55 ,@(when (< i num-args)
56 `(:from (:argument ,i)))
57 ,@(when (< i num-results)
59 :target ,(nth i (result-names)))))
62 (let ((arg-name (intern (format nil "ARG-~D" i))))
65 :scs (any-reg descriptor-reg)
66 :target ,(nth i (temp-names))))))
67 `(define-vop (,(static-fun-template-name num-args num-results)
71 (:results ,@(results))
72 (:generator ,(+ 50 num-args num-results)
73 (let ((lra-label (gen-label))
74 (cur-nfp (current-nfp-tn vop)))
75 ,@(moves (temp-names) (arg-names))
76 (inst lwz entry-point null-tn (static-fun-offset symbol))
77 (inst lr nargs (fixnumize ,num-args))
79 (store-stack-tn nfp-save cur-nfp))
80 (inst mr old-fp cfp-tn)
81 (inst mr cfp-tn csp-tn)
82 (inst compute-lra-from-code lra code-tn lra-label temp)
83 (note-this-location vop :call-site)
84 ;(inst mr code-tn func)
85 (inst mtctr entry-point)
87 (emit-return-pc lra-label)
88 ,(collect ((bindings) (links))
89 (do ((temp (temp-names) (cdr temp))
90 (name 'values (gensym))
95 (make-tn-ref ,(car temp) nil)))
97 (links `(setf (tn-ref-across ,prev) ,name))))
100 (default-unknown-values vop
101 ,(if (zerop num-results) nil 'values)
102 ,num-results move-temp temp lra-label)))
104 (load-stack-tn cur-nfp nfp-save))
105 ,@(moves (result-names) (temp-names))))))))
108 ) ; eval-when (:compile-toplevel :load-toplevel :execute)
111 (macrolet ((frob (num-args num-res)
112 (static-fun-template-vop (eval num-args) (eval num-res))))
121 (defmacro define-static-fun (name args &key (results '(x)) translate
122 policy cost arg-types result-types)
124 ,(static-fun-template-name (length args)
127 (:note ,(format nil "static-fun ~@(~S~)" name))
129 `((:translate ,translate)))
131 `((:policy ,policy)))
133 `((:generator-cost ,cost)))
135 `((:arg-types ,@arg-types)))
137 `((:result-types ,@result-types)))))