1 ;;;; various primitive memory access VOPs for the x86 VM
3 ;;;; This software is part of the SBCL system. See the README file for
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.
14 ;;;; data object ref/set stuff
17 (:args (object :scs (descriptor-reg)))
18 (:info name offset lowtag)
20 (:results (result :scs (descriptor-reg any-reg)))
22 (loadw result object offset lowtag)))
24 (define-vop (set-slot)
25 (:args (object :scs (descriptor-reg))
26 (value :scs (descriptor-reg any-reg immediate)))
27 (:info name offset lowtag)
31 (if (sc-is value immediate)
32 (let ((val (tn-value value)))
36 (make-ea :dword :base object
37 :disp (- (* offset n-word-bytes) lowtag))
41 (make-ea :dword :base object
42 :disp (- (* offset n-word-bytes) lowtag))
43 (+ nil-value (static-symbol-offset val))))
46 (make-ea :dword :base object
47 :disp (- (* offset n-word-bytes) lowtag))
48 (logior (ash (char-code val) n-widetag-bits)
49 character-widetag)))))
50 ;; Else, value not immediate.
51 (storew value object offset lowtag))))
55 ;;;; symbol hacking VOPs
57 ;;; these next two cf the sparc version, by jrd.
58 ;;; FIXME: Deref this ^ reference.
61 ;;; The compiler likes to be able to directly SET symbols.
64 (:args (symbol :scs (descriptor-reg))
65 (value :scs (descriptor-reg any-reg)))
66 (:temporary (:sc descriptor-reg) tls)
67 ;;(:policy :fast-safe)
69 (let ((global-val (gen-label))
71 (loadw tls symbol symbol-tls-index-slot other-pointer-lowtag)
73 (inst jmp :z global-val)
74 (inst fs-segment-prefix)
75 (inst cmp (make-ea :dword :scale 1 :index tls)
76 no-tls-value-marker-widetag)
77 (inst jmp :z global-val)
78 (inst fs-segment-prefix)
79 (inst mov (make-ea :dword :scale 1 :index tls) value)
81 (emit-label global-val)
82 (storew value symbol symbol-value-slot other-pointer-lowtag)
85 ;; unithreaded it's a lot simpler ...
87 (define-vop (set cell-set)
88 (:variant symbol-value-slot other-pointer-lowtag))
90 ;;; Do a cell ref with an error check for being unbound.
91 ;;; XXX stil used? I can't see where -dan
92 (define-vop (checked-cell-ref)
93 (:args (object :scs (descriptor-reg) :target obj-temp))
94 (:results (value :scs (descriptor-reg any-reg)))
97 (:save-p :compute-only)
98 (:temporary (:sc descriptor-reg :from (:argument 0)) obj-temp))
100 ;;; With Symbol-Value, we check that the value isn't the trap object. So
101 ;;; Symbol-Value of NIL is NIL.
103 (define-vop (symbol-value)
104 (:translate symbol-value)
106 (:args (object :scs (descriptor-reg) :to (:result 1)))
107 (:results (value :scs (descriptor-reg any-reg)))
109 (:save-p :compute-only)
111 (let* ((check-unbound-label (gen-label))
112 (err-lab (generate-error-code vop unbound-symbol-error object))
113 (ret-lab (gen-label)))
114 (loadw value object symbol-tls-index-slot other-pointer-lowtag)
115 (inst fs-segment-prefix)
116 (inst mov value (make-ea :dword :index value :scale 1))
117 (inst cmp value no-tls-value-marker-widetag)
118 (inst jmp :ne check-unbound-label)
119 (loadw value object symbol-value-slot other-pointer-lowtag)
120 (emit-label check-unbound-label)
121 (inst cmp value unbound-marker-widetag)
122 (inst jmp :e err-lab)
123 (emit-label ret-lab))))
126 (define-vop (fast-symbol-value symbol-value)
127 ;; KLUDGE: not really fast, in fact, because we're going to have to
128 ;; do a full lookup of the thread-local area anyway. But half of
129 ;; the meaning of FAST-SYMBOL-VALUE is "do not signal an error if
130 ;; unbound", which is used in the implementation of COPY-SYMBOL. --
133 (:translate symbol-value)
135 (let ((ret-lab (gen-label)))
136 (loadw value object symbol-tls-index-slot other-pointer-lowtag)
137 (inst fs-segment-prefix)
138 (inst mov value (make-ea :dword :index value :scale 1))
139 (inst cmp value no-tls-value-marker-widetag)
140 (inst jmp :ne ret-lab)
141 (loadw value object symbol-value-slot other-pointer-lowtag)
142 (emit-label ret-lab))))
145 (define-vop (symbol-value)
146 (:translate symbol-value)
148 (:args (object :scs (descriptor-reg) :to (:result 1)))
149 (:results (value :scs (descriptor-reg any-reg)))
151 (:save-p :compute-only)
153 (let ((err-lab (generate-error-code vop unbound-symbol-error object)))
154 (loadw value object symbol-value-slot other-pointer-lowtag)
155 (inst cmp value unbound-marker-widetag)
156 (inst jmp :e err-lab))))
159 (define-vop (fast-symbol-value cell-ref)
160 (:variant symbol-value-slot other-pointer-lowtag)
162 (:translate symbol-value))
164 (defknown locked-symbol-global-value-add (symbol fixnum) fixnum ())
166 (define-vop (locked-symbol-global-value-add)
167 (:args (object :scs (descriptor-reg) :to :result)
168 (value :scs (any-reg) :target result))
169 (:arg-types * tagged-num)
170 (:results (result :scs (any-reg) :from (:argument 1)))
172 (:translate locked-symbol-global-value-add)
173 (:result-types tagged-num)
178 (inst add (make-ea :dword :base object
179 :disp (- (* symbol-value-slot n-word-bytes)
180 other-pointer-lowtag))
187 (:args (object :scs (descriptor-reg)))
190 (:temporary (:sc descriptor-reg #+nil(:from (:argument 0))) value)
192 (let ((check-unbound-label (gen-label)))
193 (loadw value object symbol-tls-index-slot other-pointer-lowtag)
194 (inst fs-segment-prefix)
195 (inst mov value (make-ea :dword :index value :scale 1))
196 (inst cmp value no-tls-value-marker-widetag)
197 (inst jmp :ne check-unbound-label)
198 (loadw value object symbol-value-slot other-pointer-lowtag)
199 (emit-label check-unbound-label)
200 (inst cmp value unbound-marker-widetag)
201 (inst jmp (if not-p :e :ne) target))))
207 (:args (object :scs (descriptor-reg)))
210 (:temporary (:sc descriptor-reg :from (:argument 0)) value)
212 (loadw value object symbol-value-slot other-pointer-lowtag)
213 (inst cmp value unbound-marker-widetag)
214 (inst jmp (if not-p :e :ne) target)))
217 (define-vop (symbol-hash)
219 (:translate symbol-hash)
220 (:args (symbol :scs (descriptor-reg)))
221 (:results (res :scs (any-reg)))
222 (:result-types positive-fixnum)
224 ;; The symbol-hash slot of NIL holds NIL because it is also the
225 ;; cdr slot, so we have to strip off the two low bits to make sure
226 ;; it is a fixnum. The lowtag selection magic that is required to
227 ;; ensure this is explained in the comment in objdef.lisp
228 (loadw res symbol symbol-hash-slot other-pointer-lowtag)
229 (inst and res (lognot #b11))))
231 ;;;; fdefinition (FDEFN) objects
233 (define-vop (fdefn-fun cell-ref) ; /pfw - alpha
234 (:variant fdefn-fun-slot other-pointer-lowtag))
236 (define-vop (safe-fdefn-fun)
237 (:args (object :scs (descriptor-reg) :to (:result 1)))
238 (:results (value :scs (descriptor-reg any-reg)))
240 (:save-p :compute-only)
242 (loadw value object fdefn-fun-slot other-pointer-lowtag)
243 (inst cmp value nil-value)
244 (let ((err-lab (generate-error-code vop undefined-fun-error object)))
245 (inst jmp :e err-lab))))
247 (define-vop (set-fdefn-fun)
249 (:translate (setf fdefn-fun))
250 (:args (function :scs (descriptor-reg) :target result)
251 (fdefn :scs (descriptor-reg)))
252 (:temporary (:sc unsigned-reg) raw)
253 (:temporary (:sc byte-reg) type)
254 (:results (result :scs (descriptor-reg)))
256 (load-type type function (- fun-pointer-lowtag))
258 (make-ea :byte :base function
259 :disp (- (* simple-fun-code-offset n-word-bytes)
260 fun-pointer-lowtag)))
261 (inst cmp type simple-fun-header-widetag)
262 (inst jmp :e normal-fn)
263 (inst lea raw (make-fixup "closure_tramp" :foreign))
265 (storew function fdefn fdefn-fun-slot other-pointer-lowtag)
266 (storew raw fdefn fdefn-raw-addr-slot other-pointer-lowtag)
267 (move result function)))
269 (define-vop (fdefn-makunbound)
271 (:translate fdefn-makunbound)
272 (:args (fdefn :scs (descriptor-reg) :target result))
273 (:results (result :scs (descriptor-reg)))
275 (storew nil-value fdefn fdefn-fun-slot other-pointer-lowtag)
276 (storew (make-fixup "undefined_tramp" :foreign)
277 fdefn fdefn-raw-addr-slot other-pointer-lowtag)
278 (move result fdefn)))
280 ;;;; binding and unbinding
282 ;;; BIND -- Establish VAL as a binding for SYMBOL. Save the old value and
283 ;;; the symbol on the binding stack and stuff the new value into the
288 (:args (val :scs (any-reg descriptor-reg))
289 (symbol :scs (descriptor-reg)))
290 (:temporary (:sc descriptor-reg :offset eax-offset) eax)
291 (:temporary (:sc unsigned-reg) tls-index temp bsp)
293 (let ((tls-index-valid (gen-label))
294 (get-tls-index-lock (gen-label))
295 (release-tls-index-lock (gen-label)))
296 (load-binding-stack-pointer bsp)
297 (loadw tls-index symbol symbol-tls-index-slot other-pointer-lowtag)
298 (inst add bsp (* binding-size n-word-bytes))
299 (store-binding-stack-pointer bsp)
300 (inst or tls-index tls-index)
301 (inst jmp :ne tls-index-valid)
304 (emit-label get-tls-index-lock)
308 (inst cmpxchg (make-ea-for-symbol-value *tls-index-lock*) temp)
309 (inst jmp :ne get-tls-index-lock)
310 ;; now with the lock held, see if the symbol's tls index has
311 ;; been set in the meantime
312 (loadw tls-index symbol symbol-tls-index-slot other-pointer-lowtag)
313 (inst or tls-index tls-index)
314 (inst jmp :ne release-tls-index-lock)
315 ;; allocate a new tls-index
316 (load-symbol-value tls-index *free-tls-index*)
317 (inst add tls-index 4) ;XXX surely we can do this more
318 (store-symbol-value tls-index *free-tls-index*) ;succintly
319 (inst sub tls-index 4)
320 (storew tls-index symbol symbol-tls-index-slot other-pointer-lowtag)
321 (emit-label release-tls-index-lock)
322 (store-symbol-value 0 *tls-index-lock*))
324 (emit-label tls-index-valid)
325 (inst fs-segment-prefix)
326 (inst mov temp (make-ea :dword :scale 1 :index tls-index))
327 (storew temp bsp (- binding-value-slot binding-size))
328 (storew symbol bsp (- binding-symbol-slot binding-size))
329 (inst fs-segment-prefix)
330 (inst mov (make-ea :dword :scale 1 :index tls-index) val))))
334 (:args (val :scs (any-reg descriptor-reg))
335 (symbol :scs (descriptor-reg)))
336 (:temporary (:sc unsigned-reg) temp bsp)
338 (load-symbol-value bsp *binding-stack-pointer*)
339 (loadw temp symbol symbol-value-slot other-pointer-lowtag)
340 (inst add bsp (* binding-size n-word-bytes))
341 (store-symbol-value bsp *binding-stack-pointer*)
342 (storew temp bsp (- binding-value-slot binding-size))
343 (storew symbol bsp (- binding-symbol-slot binding-size))
344 (storew val symbol symbol-value-slot other-pointer-lowtag)))
350 (:temporary (:sc unsigned-reg) symbol value bsp tls-index)
352 (load-binding-stack-pointer bsp)
353 (loadw symbol bsp (- binding-symbol-slot binding-size))
354 (loadw value bsp (- binding-value-slot binding-size))
356 (loadw tls-index symbol symbol-tls-index-slot other-pointer-lowtag)
357 (inst fs-segment-prefix)
358 (inst mov (make-ea :dword :scale 1 :index tls-index) value)
360 (storew 0 bsp (- binding-value-slot binding-size))
361 (storew 0 bsp (- binding-symbol-slot binding-size))
362 (inst sub bsp (* binding-size n-word-bytes))
363 (store-binding-stack-pointer bsp)))
367 (:temporary (:sc unsigned-reg) symbol value bsp)
369 (load-symbol-value bsp *binding-stack-pointer*)
370 (loadw symbol bsp (- binding-symbol-slot binding-size))
371 (loadw value bsp (- binding-value-slot binding-size))
372 (storew value symbol symbol-value-slot other-pointer-lowtag)
373 (storew 0 bsp (- binding-value-slot binding-size))
374 (storew 0 bsp (- binding-symbol-slot binding-size))
375 (inst sub bsp (* binding-size n-word-bytes))
376 (store-symbol-value bsp *binding-stack-pointer*)))
379 (define-vop (unbind-to-here)
380 (:args (where :scs (descriptor-reg any-reg)))
381 (:temporary (:sc unsigned-reg) symbol value bsp #!+sb-thread tls-index)
383 (load-binding-stack-pointer bsp)
388 (loadw symbol bsp (- binding-symbol-slot binding-size))
389 (inst or symbol symbol)
391 (loadw value bsp (- binding-value-slot binding-size))
392 #!-sb-thread (storew value symbol symbol-value-slot other-pointer-lowtag)
395 tls-index symbol symbol-tls-index-slot other-pointer-lowtag)
396 #!+sb-thread (inst fs-segment-prefix)
397 #!+sb-thread (inst mov (make-ea :dword :scale 1 :index tls-index) value)
398 (storew 0 bsp (- binding-value-slot binding-size))
399 (storew 0 bsp (- binding-symbol-slot binding-size))
402 (inst sub bsp (* binding-size n-word-bytes))
405 (store-binding-stack-pointer bsp)
411 ;;;; closure indexing
413 (define-full-reffer closure-index-ref *
414 closure-info-offset fun-pointer-lowtag
415 (any-reg descriptor-reg) * %closure-index-ref)
417 (define-full-setter set-funcallable-instance-info *
418 funcallable-instance-info-offset fun-pointer-lowtag
419 (any-reg descriptor-reg) * %set-funcallable-instance-info)
421 (define-full-reffer funcallable-instance-info *
422 funcallable-instance-info-offset fun-pointer-lowtag
423 (descriptor-reg any-reg) * %funcallable-instance-info)
425 (define-vop (funcallable-instance-lexenv cell-ref)
426 (:variant funcallable-instance-lexenv-slot fun-pointer-lowtag))
428 (define-vop (closure-ref slot-ref)
429 (:variant closure-info-offset fun-pointer-lowtag))
431 (define-vop (closure-init slot-set)
432 (:variant closure-info-offset fun-pointer-lowtag))
434 ;;;; value cell hackery
436 (define-vop (value-cell-ref cell-ref)
437 (:variant value-cell-value-slot other-pointer-lowtag))
439 (define-vop (value-cell-set cell-set)
440 (:variant value-cell-value-slot other-pointer-lowtag))
442 ;;;; structure hackery
444 (define-vop (instance-length)
446 (:translate %instance-length)
447 (:args (struct :scs (descriptor-reg)))
448 (:results (res :scs (unsigned-reg)))
449 (:result-types positive-fixnum)
451 (loadw res struct 0 instance-pointer-lowtag)
452 (inst shr res n-widetag-bits)))
454 (define-full-reffer instance-index-ref * instance-slots-offset
455 instance-pointer-lowtag (any-reg descriptor-reg) * %instance-ref)
457 (define-full-setter instance-index-set * instance-slots-offset
458 instance-pointer-lowtag (any-reg descriptor-reg) * %instance-set)
461 (defknown %instance-set-conditional (instance index t t) t
464 (define-vop (instance-set-conditional)
465 (:translate %instance-set-conditional)
466 (:args (object :scs (descriptor-reg) :to :eval)
467 (slot :scs (any-reg) :to :result)
468 (old-value :scs (descriptor-reg any-reg) :target eax)
469 (new-value :scs (descriptor-reg any-reg)))
470 (:arg-types instance positive-fixnum * *)
471 (:temporary (:sc descriptor-reg :offset eax-offset
472 :from (:argument 2) :to :result :target result) eax)
473 (:results (result :scs (descriptor-reg any-reg)))
474 ;(:guard (backend-featurep :i486))
479 (inst cmpxchg (make-ea :dword :base object :index slot :scale 1
480 :disp (- (* instance-slots-offset n-word-bytes)
481 instance-pointer-lowtag))
487 ;;;; code object frobbing
489 (define-full-reffer code-header-ref * 0 other-pointer-lowtag
490 (any-reg descriptor-reg) * code-header-ref)
492 (define-full-setter code-header-set * 0 other-pointer-lowtag
493 (any-reg descriptor-reg) * code-header-set)
497 ;;;; raw instance slot accessors
499 (define-vop (raw-instance-ref/word)
500 (:translate %raw-instance-ref/word)
502 (:args (object :scs (descriptor-reg)) (index :scs (any-reg)))
503 (:arg-types * tagged-num)
504 (:temporary (:sc unsigned-reg) tmp)
505 (:results (value :scs (unsigned-reg)))
506 (:result-types unsigned-num)
508 (loadw tmp object 0 instance-pointer-lowtag)
509 (inst shr tmp n-widetag-bits)
517 :disp (- (* (1- instance-slots-offset) n-word-bytes)
518 instance-pointer-lowtag)))))
520 (define-vop (raw-instance-set/word)
521 (:translate %raw-instance-set/word)
523 (:args (object :scs (descriptor-reg))
524 (index :scs (any-reg))
525 (value :scs (unsigned-reg) :target result))
526 (:arg-types * tagged-num unsigned-num)
527 (:temporary (:sc unsigned-reg) tmp)
528 (:results (result :scs (unsigned-reg)))
529 (:result-types unsigned-num)
531 (loadw tmp object 0 instance-pointer-lowtag)
532 (inst shr tmp n-widetag-bits)
539 :disp (- (* (1- instance-slots-offset) n-word-bytes)
540 instance-pointer-lowtag))
542 (move result value)))
544 (define-vop (raw-instance-ref/single)
545 (:translate %raw-instance-ref/single)
547 (:args (object :scs (descriptor-reg)) (index :scs (any-reg)))
548 (:arg-types * tagged-num)
549 (:temporary (:sc unsigned-reg) tmp)
550 (:results (value :scs (single-reg)))
551 (:result-types single-float)
553 (loadw tmp object 0 instance-pointer-lowtag)
554 (inst shr tmp n-widetag-bits)
557 (with-empty-tn@fp-top(value)
562 :disp (- (* (1- instance-slots-offset) n-word-bytes)
563 instance-pointer-lowtag))))))
565 (define-vop (raw-instance-set/single)
566 (:translate %raw-instance-set/single)
568 (:args (object :scs (descriptor-reg))
569 (index :scs (any-reg))
570 (value :scs (single-reg) :target result))
571 (:arg-types * tagged-num single-float)
572 (:temporary (:sc unsigned-reg) tmp)
573 (:results (result :scs (single-reg)))
574 (:result-types single-float)
576 (loadw tmp object 0 instance-pointer-lowtag)
577 (inst shr tmp n-widetag-bits)
580 (unless (zerop (tn-offset value))
586 :disp (- (* (1- instance-slots-offset) n-word-bytes)
587 instance-pointer-lowtag)))
589 ((zerop (tn-offset value))
590 (unless (zerop (tn-offset result))
592 ((zerop (tn-offset result))
595 (unless (location= value result)
597 (inst fxch value)))))
599 (define-vop (raw-instance-ref/double)
600 (:translate %raw-instance-ref/double)
602 (:args (object :scs (descriptor-reg)) (index :scs (any-reg)))
603 (:arg-types * tagged-num)
604 (:temporary (:sc unsigned-reg) tmp)
605 (:results (value :scs (double-reg)))
606 (:result-types double-float)
608 (loadw tmp object 0 instance-pointer-lowtag)
609 (inst shr tmp n-widetag-bits)
612 (with-empty-tn@fp-top(value)
617 :disp (- (* (- instance-slots-offset 2) n-word-bytes)
618 instance-pointer-lowtag))))))
620 (define-vop (raw-instance-set/double)
621 (:translate %raw-instance-set/double)
623 (:args (object :scs (descriptor-reg))
624 (index :scs (any-reg))
625 (value :scs (double-reg) :target result))
626 (:arg-types * tagged-num double-float)
627 (:temporary (:sc unsigned-reg) tmp)
628 (:results (result :scs (double-reg)))
629 (:result-types double-float)
631 (loadw tmp object 0 instance-pointer-lowtag)
632 (inst shr tmp n-widetag-bits)
635 (unless (zerop (tn-offset value))
641 :disp (- (* (- instance-slots-offset 2) n-word-bytes)
642 instance-pointer-lowtag)))
644 ((zerop (tn-offset value))
645 (unless (zerop (tn-offset result))
647 ((zerop (tn-offset result))
650 (unless (location= value result)
652 (inst fxch value)))))
654 (define-vop (raw-instance-ref/complex-single)
655 (:translate %raw-instance-ref/complex-single)
657 (:args (object :scs (descriptor-reg))
658 (index :scs (any-reg)))
659 (:arg-types * positive-fixnum)
660 (:temporary (:sc unsigned-reg) tmp)
661 (:results (value :scs (complex-single-reg)))
662 (:result-types complex-single-float)
664 (loadw tmp object 0 instance-pointer-lowtag)
665 (inst shr tmp n-widetag-bits)
668 (let ((real-tn (complex-single-reg-real-tn value)))
669 (with-empty-tn@fp-top (real-tn)
670 (inst fld (make-ea :dword
673 :disp (- (* (- instance-slots-offset 2)
675 instance-pointer-lowtag)))))
676 (let ((imag-tn (complex-single-reg-imag-tn value)))
677 (with-empty-tn@fp-top (imag-tn)
678 (inst fld (make-ea :dword
681 :disp (- (* (1- instance-slots-offset)
683 instance-pointer-lowtag)))))))
685 (define-vop (raw-instance-set/complex-single)
686 (:translate %raw-instance-set/complex-single)
688 (:args (object :scs (descriptor-reg))
689 (index :scs (any-reg))
690 (value :scs (complex-single-reg) :target result))
691 (:arg-types * positive-fixnum complex-single-float)
692 (:temporary (:sc unsigned-reg) tmp)
693 (:results (result :scs (complex-single-reg)))
694 (:result-types complex-single-float)
696 (loadw tmp object 0 instance-pointer-lowtag)
697 (inst shr tmp n-widetag-bits)
700 (let ((value-real (complex-single-reg-real-tn value))
701 (result-real (complex-single-reg-real-tn result)))
702 (cond ((zerop (tn-offset value-real))
704 (inst fst (make-ea :dword
707 :disp (- (* (- instance-slots-offset 2)
709 instance-pointer-lowtag)))
710 (unless (zerop (tn-offset result-real))
711 ;; Value is in ST0 but not result.
712 (inst fst result-real)))
714 ;; Value is not in ST0.
715 (inst fxch value-real)
716 (inst fst (make-ea :dword
719 :disp (- (* (- instance-slots-offset 2)
721 instance-pointer-lowtag)))
722 (cond ((zerop (tn-offset result-real))
723 ;; The result is in ST0.
724 (inst fst value-real))
726 ;; Neither value or result are in ST0
727 (unless (location= value-real result-real)
728 (inst fst result-real))
729 (inst fxch value-real))))))
730 (let ((value-imag (complex-single-reg-imag-tn value))
731 (result-imag (complex-single-reg-imag-tn result)))
732 (inst fxch value-imag)
733 (inst fst (make-ea :dword
736 :disp (- (* (1- instance-slots-offset)
738 instance-pointer-lowtag)))
739 (unless (location= value-imag result-imag)
740 (inst fst result-imag))
741 (inst fxch value-imag))))
743 (define-vop (raw-instance-ref/complex-double)
744 (:translate %raw-instance-ref/complex-double)
746 (:args (object :scs (descriptor-reg))
747 (index :scs (any-reg)))
748 (:arg-types * positive-fixnum)
749 (:temporary (:sc unsigned-reg) tmp)
750 (:results (value :scs (complex-double-reg)))
751 (:result-types complex-double-float)
753 (loadw tmp object 0 instance-pointer-lowtag)
754 (inst shr tmp n-widetag-bits)
757 (let ((real-tn (complex-double-reg-real-tn value)))
758 (with-empty-tn@fp-top (real-tn)
759 (inst fldd (make-ea :dword
762 :disp (- (* (- instance-slots-offset 4)
764 instance-pointer-lowtag)))))
765 (let ((imag-tn (complex-double-reg-imag-tn value)))
766 (with-empty-tn@fp-top (imag-tn)
767 (inst fldd (make-ea :dword
770 :disp (- (* (- instance-slots-offset 2)
772 instance-pointer-lowtag)))))))
774 (define-vop (raw-instance-set/complex-double)
775 (:translate %raw-instance-set/complex-double)
777 (:args (object :scs (descriptor-reg))
778 (index :scs (any-reg))
779 (value :scs (complex-double-reg) :target result))
780 (:arg-types * positive-fixnum complex-double-float)
781 (:temporary (:sc unsigned-reg) tmp)
782 (:results (result :scs (complex-double-reg)))
783 (:result-types complex-double-float)
785 (loadw tmp object 0 instance-pointer-lowtag)
786 (inst shr tmp n-widetag-bits)
789 (let ((value-real (complex-double-reg-real-tn value))
790 (result-real (complex-double-reg-real-tn result)))
791 (cond ((zerop (tn-offset value-real))
793 (inst fstd (make-ea :dword
796 :disp (- (* (- instance-slots-offset 4)
798 instance-pointer-lowtag)))
799 (unless (zerop (tn-offset result-real))
800 ;; Value is in ST0 but not result.
801 (inst fstd result-real)))
803 ;; Value is not in ST0.
804 (inst fxch value-real)
805 (inst fstd (make-ea :dword
808 :disp (- (* (- instance-slots-offset 4)
810 instance-pointer-lowtag)))
811 (cond ((zerop (tn-offset result-real))
812 ;; The result is in ST0.
813 (inst fstd value-real))
815 ;; Neither value or result are in ST0
816 (unless (location= value-real result-real)
817 (inst fstd result-real))
818 (inst fxch value-real))))))
819 (let ((value-imag (complex-double-reg-imag-tn value))
820 (result-imag (complex-double-reg-imag-tn result)))
821 (inst fxch value-imag)
822 (inst fstd (make-ea :dword
825 :disp (- (* (- instance-slots-offset 2)
827 instance-pointer-lowtag)))
828 (unless (location= value-imag result-imag)
829 (inst fstd result-imag))
830 (inst fxch value-imag))))