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 :base tls) no-tls-value-marker-widetag)
76 (inst jmp :z global-val)
77 (inst fs-segment-prefix)
78 (inst mov (make-ea :dword :base tls) value)
80 (emit-label global-val)
81 (storew value symbol symbol-value-slot other-pointer-lowtag)
84 ;; unithreaded it's a lot simpler ...
86 (define-vop (set cell-set)
87 (:variant symbol-value-slot other-pointer-lowtag))
89 ;;; With Symbol-Value, we check that the value isn't the trap object. So
90 ;;; Symbol-Value of NIL is NIL.
92 (define-vop (symbol-value)
93 (:translate symbol-value)
95 (:args (object :scs (descriptor-reg) :to (:result 1)))
96 (:results (value :scs (descriptor-reg any-reg)))
98 (:save-p :compute-only)
100 (let* ((check-unbound-label (gen-label))
101 (err-lab (generate-error-code vop unbound-symbol-error object))
102 (ret-lab (gen-label)))
103 (loadw value object symbol-tls-index-slot other-pointer-lowtag)
104 (inst fs-segment-prefix)
105 (inst mov value (make-ea :dword :base value))
106 (inst cmp value no-tls-value-marker-widetag)
107 (inst jmp :ne check-unbound-label)
108 (loadw value object symbol-value-slot other-pointer-lowtag)
109 (emit-label check-unbound-label)
110 (inst cmp value unbound-marker-widetag)
111 (inst jmp :e err-lab)
112 (emit-label ret-lab))))
115 (define-vop (fast-symbol-value symbol-value)
116 ;; KLUDGE: not really fast, in fact, because we're going to have to
117 ;; do a full lookup of the thread-local area anyway. But half of
118 ;; the meaning of FAST-SYMBOL-VALUE is "do not signal an error if
119 ;; unbound", which is used in the implementation of COPY-SYMBOL. --
122 (:translate symbol-value)
124 (let ((ret-lab (gen-label)))
125 (loadw value object symbol-tls-index-slot other-pointer-lowtag)
126 (inst fs-segment-prefix)
127 (inst mov value (make-ea :dword :base value))
128 (inst cmp value no-tls-value-marker-widetag)
129 (inst jmp :ne ret-lab)
130 (loadw value object symbol-value-slot other-pointer-lowtag)
131 (emit-label ret-lab))))
134 (define-vop (symbol-value)
135 (:translate symbol-value)
137 (:args (object :scs (descriptor-reg) :to (:result 1)))
138 (:results (value :scs (descriptor-reg any-reg)))
140 (:save-p :compute-only)
142 (let ((err-lab (generate-error-code vop unbound-symbol-error object)))
143 (loadw value object symbol-value-slot other-pointer-lowtag)
144 (inst cmp value unbound-marker-widetag)
145 (inst jmp :e err-lab))))
148 (define-vop (fast-symbol-value cell-ref)
149 (:variant symbol-value-slot other-pointer-lowtag)
151 (:translate symbol-value))
153 (defknown locked-symbol-global-value-add (symbol fixnum) fixnum ())
155 (define-vop (locked-symbol-global-value-add)
156 (:args (object :scs (descriptor-reg) :to :result)
157 (value :scs (any-reg) :target result))
158 (:arg-types * tagged-num)
159 (:results (result :scs (any-reg) :from (:argument 1)))
161 (:translate locked-symbol-global-value-add)
162 (:result-types tagged-num)
167 (inst add (make-ea :dword :base object
168 :disp (- (* symbol-value-slot n-word-bytes)
169 other-pointer-lowtag))
176 (:args (object :scs (descriptor-reg)))
179 (:temporary (:sc descriptor-reg #+nil(:from (:argument 0))) value)
181 (let ((check-unbound-label (gen-label)))
182 (loadw value object symbol-tls-index-slot other-pointer-lowtag)
183 (inst fs-segment-prefix)
184 (inst mov value (make-ea :dword :base value))
185 (inst cmp value no-tls-value-marker-widetag)
186 (inst jmp :ne check-unbound-label)
187 (loadw value object symbol-value-slot other-pointer-lowtag)
188 (emit-label check-unbound-label)
189 (inst cmp value unbound-marker-widetag)
190 (inst jmp (if not-p :e :ne) target))))
196 (:args (object :scs (descriptor-reg)))
200 (inst cmp (make-ea-for-object-slot object symbol-value-slot
201 other-pointer-lowtag)
202 unbound-marker-widetag)
203 (inst jmp (if not-p :e :ne) target)))
206 (define-vop (symbol-hash)
208 (:translate symbol-hash)
209 (:args (symbol :scs (descriptor-reg)))
210 (:results (res :scs (any-reg)))
211 (:result-types positive-fixnum)
213 ;; The symbol-hash slot of NIL holds NIL because it is also the
214 ;; cdr slot, so we have to strip off the two low bits to make sure
215 ;; it is a fixnum. The lowtag selection magic that is required to
216 ;; ensure this is explained in the comment in objdef.lisp
217 (loadw res symbol symbol-hash-slot other-pointer-lowtag)
218 (inst and res (lognot #b11))))
220 ;;;; fdefinition (FDEFN) objects
222 (define-vop (fdefn-fun cell-ref) ; /pfw - alpha
223 (:variant fdefn-fun-slot other-pointer-lowtag))
225 (define-vop (safe-fdefn-fun)
226 (:args (object :scs (descriptor-reg) :to (:result 1)))
227 (:results (value :scs (descriptor-reg any-reg)))
229 (:save-p :compute-only)
231 (loadw value object fdefn-fun-slot other-pointer-lowtag)
232 (inst cmp value nil-value)
233 (let ((err-lab (generate-error-code vop undefined-fun-error object)))
234 (inst jmp :e err-lab))))
236 (define-vop (set-fdefn-fun)
238 (:translate (setf fdefn-fun))
239 (:args (function :scs (descriptor-reg) :target result)
240 (fdefn :scs (descriptor-reg)))
241 (:temporary (:sc unsigned-reg) raw)
242 (:temporary (:sc byte-reg) type)
243 (:results (result :scs (descriptor-reg)))
245 (load-type type function (- fun-pointer-lowtag))
247 (make-ea :byte :base function
248 :disp (- (* simple-fun-code-offset n-word-bytes)
249 fun-pointer-lowtag)))
250 (inst cmp type simple-fun-header-widetag)
251 (inst jmp :e normal-fn)
252 (inst lea raw (make-fixup "closure_tramp" :foreign))
254 (storew function fdefn fdefn-fun-slot other-pointer-lowtag)
255 (storew raw fdefn fdefn-raw-addr-slot other-pointer-lowtag)
256 (move result function)))
258 (define-vop (fdefn-makunbound)
260 (:translate fdefn-makunbound)
261 (:args (fdefn :scs (descriptor-reg) :target result))
262 (:results (result :scs (descriptor-reg)))
264 (storew nil-value fdefn fdefn-fun-slot other-pointer-lowtag)
265 (storew (make-fixup "undefined_tramp" :foreign)
266 fdefn fdefn-raw-addr-slot other-pointer-lowtag)
267 (move result fdefn)))
269 ;;;; binding and unbinding
271 ;;; BIND -- Establish VAL as a binding for SYMBOL. Save the old value and
272 ;;; the symbol on the binding stack and stuff the new value into the
277 (:args (val :scs (any-reg descriptor-reg))
278 (symbol :scs (descriptor-reg)))
279 (:temporary (:sc descriptor-reg :offset eax-offset) eax)
280 (:temporary (:sc unsigned-reg) tls-index temp bsp)
282 (let ((tls-index-valid (gen-label))
283 (get-tls-index-lock (gen-label))
284 (release-tls-index-lock (gen-label)))
285 (load-binding-stack-pointer bsp)
286 (loadw tls-index symbol symbol-tls-index-slot other-pointer-lowtag)
287 (inst add bsp (* binding-size n-word-bytes))
288 (store-binding-stack-pointer bsp)
289 (inst or tls-index tls-index)
290 (inst jmp :ne tls-index-valid)
293 (emit-label get-tls-index-lock)
297 (inst cmpxchg (make-ea-for-symbol-value *tls-index-lock*) temp)
298 (inst jmp :ne get-tls-index-lock)
299 ;; now with the lock held, see if the symbol's tls index has
300 ;; been set in the meantime
301 (loadw tls-index symbol symbol-tls-index-slot other-pointer-lowtag)
302 (inst or tls-index tls-index)
303 (inst jmp :ne release-tls-index-lock)
304 ;; allocate a new tls-index
305 (load-symbol-value tls-index *free-tls-index*)
306 (inst add tls-index 4) ;XXX surely we can do this more
307 (store-symbol-value tls-index *free-tls-index*) ;succintly
308 (inst sub tls-index 4)
309 (storew tls-index symbol symbol-tls-index-slot other-pointer-lowtag)
310 (emit-label release-tls-index-lock)
311 (store-symbol-value 0 *tls-index-lock*))
313 (emit-label tls-index-valid)
314 (inst fs-segment-prefix)
315 (inst mov temp (make-ea :dword :base tls-index))
316 (storew temp bsp (- binding-value-slot binding-size))
317 (storew symbol bsp (- binding-symbol-slot binding-size))
318 (inst fs-segment-prefix)
319 (inst mov (make-ea :dword :base tls-index) val))))
323 (:args (val :scs (any-reg descriptor-reg))
324 (symbol :scs (descriptor-reg)))
325 (:temporary (:sc unsigned-reg) temp bsp)
327 (load-symbol-value bsp *binding-stack-pointer*)
328 (loadw temp symbol symbol-value-slot other-pointer-lowtag)
329 (inst add bsp (* binding-size n-word-bytes))
330 (store-symbol-value bsp *binding-stack-pointer*)
331 (storew temp bsp (- binding-value-slot binding-size))
332 (storew symbol bsp (- binding-symbol-slot binding-size))
333 (storew val symbol symbol-value-slot other-pointer-lowtag)))
339 (:temporary (:sc unsigned-reg) symbol value bsp tls-index)
341 (load-binding-stack-pointer bsp)
342 (loadw symbol bsp (- binding-symbol-slot binding-size))
343 (loadw value bsp (- binding-value-slot binding-size))
345 (loadw tls-index symbol symbol-tls-index-slot other-pointer-lowtag)
346 (inst fs-segment-prefix)
347 (inst mov (make-ea :dword :base tls-index) value)
349 (storew 0 bsp (- binding-symbol-slot binding-size))
350 (storew 0 bsp (- binding-value-slot binding-size))
351 (inst sub bsp (* binding-size n-word-bytes))
352 (store-binding-stack-pointer bsp)))
356 (:temporary (:sc unsigned-reg) symbol value bsp)
358 (load-symbol-value bsp *binding-stack-pointer*)
359 (loadw symbol bsp (- binding-symbol-slot binding-size))
360 (loadw value bsp (- binding-value-slot binding-size))
361 (storew value symbol symbol-value-slot other-pointer-lowtag)
362 (storew 0 bsp (- binding-symbol-slot binding-size))
363 (storew 0 bsp (- binding-value-slot binding-size))
364 (inst sub bsp (* binding-size n-word-bytes))
365 (store-symbol-value bsp *binding-stack-pointer*)))
368 (define-vop (unbind-to-here)
369 (:args (where :scs (descriptor-reg any-reg)))
370 (:temporary (:sc unsigned-reg) symbol value bsp #!+sb-thread tls-index)
372 (load-binding-stack-pointer bsp)
377 (loadw symbol bsp (- binding-symbol-slot binding-size))
378 (inst or symbol symbol)
380 (loadw value bsp (- binding-value-slot binding-size))
381 #!-sb-thread (storew value symbol symbol-value-slot other-pointer-lowtag)
384 tls-index symbol symbol-tls-index-slot other-pointer-lowtag)
385 #!+sb-thread (inst fs-segment-prefix)
386 #!+sb-thread (inst mov (make-ea :dword :base tls-index) value)
387 (storew 0 bsp (- binding-symbol-slot binding-size))
390 (storew 0 bsp (- binding-value-slot binding-size))
391 (inst sub bsp (* binding-size n-word-bytes))
394 (store-binding-stack-pointer bsp)
400 ;;;; closure indexing
402 (define-full-reffer closure-index-ref *
403 closure-info-offset fun-pointer-lowtag
404 (any-reg descriptor-reg) * %closure-index-ref)
406 (define-full-setter set-funcallable-instance-info *
407 funcallable-instance-info-offset fun-pointer-lowtag
408 (any-reg descriptor-reg) * %set-funcallable-instance-info)
410 (define-full-reffer funcallable-instance-info *
411 funcallable-instance-info-offset fun-pointer-lowtag
412 (descriptor-reg any-reg) * %funcallable-instance-info)
414 (define-vop (closure-ref slot-ref)
415 (:variant closure-info-offset fun-pointer-lowtag))
417 (define-vop (closure-init slot-set)
418 (:variant closure-info-offset fun-pointer-lowtag))
420 ;;;; value cell hackery
422 (define-vop (value-cell-ref cell-ref)
423 (:variant value-cell-value-slot other-pointer-lowtag))
425 (define-vop (value-cell-set cell-set)
426 (:variant value-cell-value-slot other-pointer-lowtag))
428 ;;;; structure hackery
430 (define-vop (instance-length)
432 (:translate %instance-length)
433 (:args (struct :scs (descriptor-reg)))
434 (:results (res :scs (unsigned-reg)))
435 (:result-types positive-fixnum)
437 (loadw res struct 0 instance-pointer-lowtag)
438 (inst shr res n-widetag-bits)))
440 (define-full-reffer instance-index-ref * instance-slots-offset
441 instance-pointer-lowtag (any-reg descriptor-reg) * %instance-ref)
443 (define-full-setter instance-index-set * instance-slots-offset
444 instance-pointer-lowtag (any-reg descriptor-reg) * %instance-set)
447 (defknown %instance-set-conditional (instance index t t) t
450 (define-vop (instance-set-conditional)
451 (:translate %instance-set-conditional)
452 (:args (object :scs (descriptor-reg) :to :eval)
453 (slot :scs (any-reg) :to :result)
454 (old-value :scs (descriptor-reg any-reg) :target eax)
455 (new-value :scs (descriptor-reg any-reg)))
456 (:arg-types instance positive-fixnum * *)
457 (:temporary (:sc descriptor-reg :offset eax-offset
458 :from (:argument 2) :to :result :target result) eax)
459 (:results (result :scs (descriptor-reg any-reg)))
460 ;(:guard (backend-featurep :i486))
465 (inst cmpxchg (make-ea :dword :base object :index slot :scale 1
466 :disp (- (* instance-slots-offset n-word-bytes)
467 instance-pointer-lowtag))
473 ;;;; code object frobbing
475 (define-full-reffer code-header-ref * 0 other-pointer-lowtag
476 (any-reg descriptor-reg) * code-header-ref)
478 (define-full-setter code-header-set * 0 other-pointer-lowtag
479 (any-reg descriptor-reg) * code-header-set)
483 ;;;; raw instance slot accessors
485 (defun make-ea-for-raw-slot (object index instance-length n-words)
487 (any-reg (make-ea :dword
489 :index instance-length
490 :disp (- (* (- instance-slots-offset n-words)
492 instance-pointer-lowtag)))
493 (immediate (make-ea :dword :base object
494 :index instance-length
496 :disp (- (* (- instance-slots-offset n-words)
498 instance-pointer-lowtag
499 (fixnumize (tn-value index)))))))
501 (define-vop (raw-instance-ref/word)
502 (:translate %raw-instance-ref/word)
504 (:args (object :scs (descriptor-reg)) (index :scs (any-reg immediate)))
505 (:arg-types * tagged-num)
506 (:temporary (:sc unsigned-reg) tmp)
507 (:results (value :scs (unsigned-reg)))
508 (:result-types unsigned-num)
510 (loadw tmp object 0 instance-pointer-lowtag)
511 (inst shr tmp n-widetag-bits)
512 (when (sc-is index any-reg)
514 (inst sub tmp index))
515 (inst mov value (make-ea-for-raw-slot object index tmp 1))))
517 (define-vop (raw-instance-set/word)
518 (:translate %raw-instance-set/word)
520 (:args (object :scs (descriptor-reg))
521 (index :scs (any-reg immediate))
522 (value :scs (unsigned-reg) :target result))
523 (:arg-types * tagged-num unsigned-num)
524 (:temporary (:sc unsigned-reg) tmp)
525 (:results (result :scs (unsigned-reg)))
526 (:result-types unsigned-num)
528 (loadw tmp object 0 instance-pointer-lowtag)
529 (inst shr tmp n-widetag-bits)
530 (when (sc-is index any-reg)
532 (inst sub tmp index))
533 (inst mov (make-ea-for-raw-slot object index tmp 1) value)
534 (move result value)))
536 (define-vop (raw-instance-ref/single)
537 (:translate %raw-instance-ref/single)
539 (:args (object :scs (descriptor-reg)) (index :scs (any-reg immediate)))
540 (:arg-types * tagged-num)
541 (:temporary (:sc unsigned-reg) tmp)
542 (:results (value :scs (single-reg)))
543 (:result-types single-float)
545 (loadw tmp object 0 instance-pointer-lowtag)
546 (inst shr tmp n-widetag-bits)
547 (when (sc-is index any-reg)
549 (inst sub tmp index))
550 (with-empty-tn@fp-top(value)
551 (inst fld (make-ea-for-raw-slot object index tmp 1)))))
553 (define-vop (raw-instance-set/single)
554 (:translate %raw-instance-set/single)
556 (:args (object :scs (descriptor-reg))
557 (index :scs (any-reg immediate))
558 (value :scs (single-reg) :target result))
559 (:arg-types * tagged-num single-float)
560 (:temporary (:sc unsigned-reg) tmp)
561 (:results (result :scs (single-reg)))
562 (:result-types single-float)
564 (loadw tmp object 0 instance-pointer-lowtag)
565 (inst shr tmp n-widetag-bits)
566 (when (sc-is index any-reg)
568 (inst sub tmp index))
569 (unless (zerop (tn-offset value))
571 (inst fst (make-ea-for-raw-slot object index tmp 1))
573 ((zerop (tn-offset value))
574 (unless (zerop (tn-offset result))
576 ((zerop (tn-offset result))
579 (unless (location= value result)
581 (inst fxch value)))))
583 (define-vop (raw-instance-ref/double)
584 (:translate %raw-instance-ref/double)
586 (:args (object :scs (descriptor-reg)) (index :scs (any-reg immediate)))
587 (:arg-types * tagged-num)
588 (:temporary (:sc unsigned-reg) tmp)
589 (:results (value :scs (double-reg)))
590 (:result-types double-float)
592 (loadw tmp object 0 instance-pointer-lowtag)
593 (inst shr tmp n-widetag-bits)
594 (when (sc-is index any-reg)
596 (inst sub tmp index))
597 (with-empty-tn@fp-top(value)
598 (inst fldd (make-ea-for-raw-slot object index tmp 2)))))
600 (define-vop (raw-instance-set/double)
601 (:translate %raw-instance-set/double)
603 (:args (object :scs (descriptor-reg))
604 (index :scs (any-reg immediate))
605 (value :scs (double-reg) :target result))
606 (:arg-types * tagged-num double-float)
607 (:temporary (:sc unsigned-reg) tmp)
608 (:results (result :scs (double-reg)))
609 (:result-types double-float)
611 (loadw tmp object 0 instance-pointer-lowtag)
612 (inst shr tmp n-widetag-bits)
613 (when (sc-is index any-reg)
615 (inst sub tmp index))
616 (unless (zerop (tn-offset value))
618 (inst fstd (make-ea-for-raw-slot object index tmp 2))
620 ((zerop (tn-offset value))
621 (unless (zerop (tn-offset result))
623 ((zerop (tn-offset result))
626 (unless (location= value result)
628 (inst fxch value)))))
630 (define-vop (raw-instance-ref/complex-single)
631 (:translate %raw-instance-ref/complex-single)
633 (:args (object :scs (descriptor-reg))
634 (index :scs (any-reg immediate)))
635 (:arg-types * positive-fixnum)
636 (:temporary (:sc unsigned-reg) tmp)
637 (:results (value :scs (complex-single-reg)))
638 (:result-types complex-single-float)
640 (loadw tmp object 0 instance-pointer-lowtag)
641 (inst shr tmp n-widetag-bits)
642 (when (sc-is index any-reg)
644 (inst sub tmp index))
645 (let ((real-tn (complex-single-reg-real-tn value)))
646 (with-empty-tn@fp-top (real-tn)
647 (inst fld (make-ea-for-raw-slot object index tmp 2))))
648 (let ((imag-tn (complex-single-reg-imag-tn value)))
649 (with-empty-tn@fp-top (imag-tn)
650 (inst fld (make-ea-for-raw-slot object index tmp 1))))))
652 (define-vop (raw-instance-set/complex-single)
653 (:translate %raw-instance-set/complex-single)
655 (:args (object :scs (descriptor-reg))
656 (index :scs (any-reg immediate))
657 (value :scs (complex-single-reg) :target result))
658 (:arg-types * positive-fixnum complex-single-float)
659 (:temporary (:sc unsigned-reg) tmp)
660 (:results (result :scs (complex-single-reg)))
661 (:result-types complex-single-float)
663 (loadw tmp object 0 instance-pointer-lowtag)
664 (inst shr tmp n-widetag-bits)
665 (when (sc-is index any-reg)
667 (inst sub tmp index))
668 (let ((value-real (complex-single-reg-real-tn value))
669 (result-real (complex-single-reg-real-tn result)))
670 (cond ((zerop (tn-offset value-real))
672 (inst fst (make-ea-for-raw-slot object index tmp 2))
673 (unless (zerop (tn-offset result-real))
674 ;; Value is in ST0 but not result.
675 (inst fst result-real)))
677 ;; Value is not in ST0.
678 (inst fxch value-real)
679 (inst fst (make-ea-for-raw-slot object index tmp 2))
680 (cond ((zerop (tn-offset result-real))
681 ;; The result is in ST0.
682 (inst fst value-real))
684 ;; Neither value or result are in ST0
685 (unless (location= value-real result-real)
686 (inst fst result-real))
687 (inst fxch value-real))))))
688 (let ((value-imag (complex-single-reg-imag-tn value))
689 (result-imag (complex-single-reg-imag-tn result)))
690 (inst fxch value-imag)
691 (inst fst (make-ea-for-raw-slot object index tmp 1))
692 (unless (location= value-imag result-imag)
693 (inst fst result-imag))
694 (inst fxch value-imag))))
696 (define-vop (raw-instance-ref/complex-double)
697 (:translate %raw-instance-ref/complex-double)
699 (:args (object :scs (descriptor-reg))
700 (index :scs (any-reg immediate)))
701 (:arg-types * positive-fixnum)
702 (:temporary (:sc unsigned-reg) tmp)
703 (:results (value :scs (complex-double-reg)))
704 (:result-types complex-double-float)
706 (loadw tmp object 0 instance-pointer-lowtag)
707 (inst shr tmp n-widetag-bits)
708 (when (sc-is index any-reg)
710 (inst sub tmp index))
711 (let ((real-tn (complex-double-reg-real-tn value)))
712 (with-empty-tn@fp-top (real-tn)
713 (inst fldd (make-ea-for-raw-slot object index tmp 4))))
714 (let ((imag-tn (complex-double-reg-imag-tn value)))
715 (with-empty-tn@fp-top (imag-tn)
716 (inst fldd (make-ea-for-raw-slot object index tmp 2))))))
718 (define-vop (raw-instance-set/complex-double)
719 (:translate %raw-instance-set/complex-double)
721 (:args (object :scs (descriptor-reg))
722 (index :scs (any-reg immediate))
723 (value :scs (complex-double-reg) :target result))
724 (:arg-types * positive-fixnum complex-double-float)
725 (:temporary (:sc unsigned-reg) tmp)
726 (:results (result :scs (complex-double-reg)))
727 (:result-types complex-double-float)
729 (loadw tmp object 0 instance-pointer-lowtag)
730 (inst shr tmp n-widetag-bits)
731 (when (sc-is index any-reg)
733 (inst sub tmp index))
734 (let ((value-real (complex-double-reg-real-tn value))
735 (result-real (complex-double-reg-real-tn result)))
736 (cond ((zerop (tn-offset value-real))
738 (inst fstd (make-ea-for-raw-slot object index tmp 4))
739 (unless (zerop (tn-offset result-real))
740 ;; Value is in ST0 but not result.
741 (inst fstd result-real)))
743 ;; Value is not in ST0.
744 (inst fxch value-real)
745 (inst fstd (make-ea-for-raw-slot object index tmp 4))
746 (cond ((zerop (tn-offset result-real))
747 ;; The result is in ST0.
748 (inst fstd value-real))
750 ;; Neither value or result are in ST0
751 (unless (location= value-real result-real)
752 (inst fstd result-real))
753 (inst fxch value-real))))))
754 (let ((value-imag (complex-double-reg-imag-tn value))
755 (result-imag (complex-double-reg-imag-tn result)))
756 (inst fxch value-imag)
757 (inst fstd (make-ea-for-raw-slot object index tmp 2))
758 (unless (location= value-imag result-imag)
759 (inst fstd result-imag))
760 (inst fxch value-imag))))