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 ;;; Do a cell ref with an error check for being unbound.
90 ;;; XXX stil used? I can't see where -dan
91 (define-vop (checked-cell-ref)
92 (:args (object :scs (descriptor-reg) :target obj-temp))
93 (:results (value :scs (descriptor-reg any-reg)))
96 (:save-p :compute-only)
97 (:temporary (:sc descriptor-reg :from (:argument 0)) obj-temp))
99 ;;; With Symbol-Value, we check that the value isn't the trap object. So
100 ;;; Symbol-Value of NIL is NIL.
102 (define-vop (symbol-value)
103 (:translate symbol-value)
105 (:args (object :scs (descriptor-reg) :to (:result 1)))
106 (:results (value :scs (descriptor-reg any-reg)))
108 (:save-p :compute-only)
110 (let* ((check-unbound-label (gen-label))
111 (err-lab (generate-error-code vop unbound-symbol-error object))
112 (ret-lab (gen-label)))
113 (loadw value object symbol-tls-index-slot other-pointer-lowtag)
114 (inst fs-segment-prefix)
115 (inst mov value (make-ea :dword :base value))
116 (inst cmp value no-tls-value-marker-widetag)
117 (inst jmp :ne check-unbound-label)
118 (loadw value object symbol-value-slot other-pointer-lowtag)
119 (emit-label check-unbound-label)
120 (inst cmp value unbound-marker-widetag)
121 (inst jmp :e err-lab)
122 (emit-label ret-lab))))
125 (define-vop (fast-symbol-value symbol-value)
126 ;; KLUDGE: not really fast, in fact, because we're going to have to
127 ;; do a full lookup of the thread-local area anyway. But half of
128 ;; the meaning of FAST-SYMBOL-VALUE is "do not signal an error if
129 ;; unbound", which is used in the implementation of COPY-SYMBOL. --
132 (:translate symbol-value)
134 (let ((ret-lab (gen-label)))
135 (loadw value object symbol-tls-index-slot other-pointer-lowtag)
136 (inst fs-segment-prefix)
137 (inst mov value (make-ea :dword :base value))
138 (inst cmp value no-tls-value-marker-widetag)
139 (inst jmp :ne ret-lab)
140 (loadw value object symbol-value-slot other-pointer-lowtag)
141 (emit-label ret-lab))))
144 (define-vop (symbol-value)
145 (:translate symbol-value)
147 (:args (object :scs (descriptor-reg) :to (:result 1)))
148 (:results (value :scs (descriptor-reg any-reg)))
150 (:save-p :compute-only)
152 (let ((err-lab (generate-error-code vop unbound-symbol-error object)))
153 (loadw value object symbol-value-slot other-pointer-lowtag)
154 (inst cmp value unbound-marker-widetag)
155 (inst jmp :e err-lab))))
158 (define-vop (fast-symbol-value cell-ref)
159 (:variant symbol-value-slot other-pointer-lowtag)
161 (:translate symbol-value))
163 (defknown locked-symbol-global-value-add (symbol fixnum) fixnum ())
165 (define-vop (locked-symbol-global-value-add)
166 (:args (object :scs (descriptor-reg) :to :result)
167 (value :scs (any-reg) :target result))
168 (:arg-types * tagged-num)
169 (:results (result :scs (any-reg) :from (:argument 1)))
171 (:translate locked-symbol-global-value-add)
172 (:result-types tagged-num)
177 (inst add (make-ea :dword :base object
178 :disp (- (* symbol-value-slot n-word-bytes)
179 other-pointer-lowtag))
186 (:args (object :scs (descriptor-reg)))
189 (:temporary (:sc descriptor-reg #+nil(:from (:argument 0))) value)
191 (let ((check-unbound-label (gen-label)))
192 (loadw value object symbol-tls-index-slot other-pointer-lowtag)
193 (inst fs-segment-prefix)
194 (inst mov value (make-ea :dword :base value))
195 (inst cmp value no-tls-value-marker-widetag)
196 (inst jmp :ne check-unbound-label)
197 (loadw value object symbol-value-slot other-pointer-lowtag)
198 (emit-label check-unbound-label)
199 (inst cmp value unbound-marker-widetag)
200 (inst jmp (if not-p :e :ne) target))))
206 (:args (object :scs (descriptor-reg)))
210 (inst cmp (make-ea-for-object-slot object symbol-value-slot
211 other-pointer-lowtag)
212 unbound-marker-widetag)
213 (inst jmp (if not-p :e :ne) target)))
216 (define-vop (symbol-hash)
218 (:translate symbol-hash)
219 (:args (symbol :scs (descriptor-reg)))
220 (:results (res :scs (any-reg)))
221 (:result-types positive-fixnum)
223 ;; The symbol-hash slot of NIL holds NIL because it is also the
224 ;; cdr slot, so we have to strip off the two low bits to make sure
225 ;; it is a fixnum. The lowtag selection magic that is required to
226 ;; ensure this is explained in the comment in objdef.lisp
227 (loadw res symbol symbol-hash-slot other-pointer-lowtag)
228 (inst and res (lognot #b11))))
230 ;;;; fdefinition (FDEFN) objects
232 (define-vop (fdefn-fun cell-ref) ; /pfw - alpha
233 (:variant fdefn-fun-slot other-pointer-lowtag))
235 (define-vop (safe-fdefn-fun)
236 (:args (object :scs (descriptor-reg) :to (:result 1)))
237 (:results (value :scs (descriptor-reg any-reg)))
239 (:save-p :compute-only)
241 (loadw value object fdefn-fun-slot other-pointer-lowtag)
242 (inst cmp value nil-value)
243 (let ((err-lab (generate-error-code vop undefined-fun-error object)))
244 (inst jmp :e err-lab))))
246 (define-vop (set-fdefn-fun)
248 (:translate (setf fdefn-fun))
249 (:args (function :scs (descriptor-reg) :target result)
250 (fdefn :scs (descriptor-reg)))
251 (:temporary (:sc unsigned-reg) raw)
252 (:temporary (:sc byte-reg) type)
253 (:results (result :scs (descriptor-reg)))
255 (load-type type function (- fun-pointer-lowtag))
257 (make-ea :byte :base function
258 :disp (- (* simple-fun-code-offset n-word-bytes)
259 fun-pointer-lowtag)))
260 (inst cmp type simple-fun-header-widetag)
261 (inst jmp :e normal-fn)
262 (inst lea raw (make-fixup "closure_tramp" :foreign))
264 (storew function fdefn fdefn-fun-slot other-pointer-lowtag)
265 (storew raw fdefn fdefn-raw-addr-slot other-pointer-lowtag)
266 (move result function)))
268 (define-vop (fdefn-makunbound)
270 (:translate fdefn-makunbound)
271 (:args (fdefn :scs (descriptor-reg) :target result))
272 (:results (result :scs (descriptor-reg)))
274 (storew nil-value fdefn fdefn-fun-slot other-pointer-lowtag)
275 (storew (make-fixup "undefined_tramp" :foreign)
276 fdefn fdefn-raw-addr-slot other-pointer-lowtag)
277 (move result fdefn)))
279 ;;;; binding and unbinding
281 ;;; BIND -- Establish VAL as a binding for SYMBOL. Save the old value and
282 ;;; the symbol on the binding stack and stuff the new value into the
287 (:args (val :scs (any-reg descriptor-reg))
288 (symbol :scs (descriptor-reg)))
289 (:temporary (:sc descriptor-reg :offset eax-offset) eax)
290 (:temporary (:sc unsigned-reg) tls-index temp bsp)
292 (let ((tls-index-valid (gen-label))
293 (get-tls-index-lock (gen-label))
294 (release-tls-index-lock (gen-label)))
295 (load-binding-stack-pointer bsp)
296 (loadw tls-index symbol symbol-tls-index-slot other-pointer-lowtag)
297 (inst add bsp (* binding-size n-word-bytes))
298 (store-binding-stack-pointer bsp)
299 (inst or tls-index tls-index)
300 (inst jmp :ne tls-index-valid)
303 (emit-label get-tls-index-lock)
307 (inst cmpxchg (make-ea-for-symbol-value *tls-index-lock*) temp)
308 (inst jmp :ne get-tls-index-lock)
309 ;; now with the lock held, see if the symbol's tls index has
310 ;; been set in the meantime
311 (loadw tls-index symbol symbol-tls-index-slot other-pointer-lowtag)
312 (inst or tls-index tls-index)
313 (inst jmp :ne release-tls-index-lock)
314 ;; allocate a new tls-index
315 (load-symbol-value tls-index *free-tls-index*)
316 (inst add tls-index 4) ;XXX surely we can do this more
317 (store-symbol-value tls-index *free-tls-index*) ;succintly
318 (inst sub tls-index 4)
319 (storew tls-index symbol symbol-tls-index-slot other-pointer-lowtag)
320 (emit-label release-tls-index-lock)
321 (store-symbol-value 0 *tls-index-lock*))
323 (emit-label tls-index-valid)
324 (inst fs-segment-prefix)
325 (inst mov temp (make-ea :dword :base tls-index))
326 (storew temp bsp (- binding-value-slot binding-size))
327 (storew symbol bsp (- binding-symbol-slot binding-size))
328 (inst fs-segment-prefix)
329 (inst mov (make-ea :dword :base tls-index) val))))
333 (:args (val :scs (any-reg descriptor-reg))
334 (symbol :scs (descriptor-reg)))
335 (:temporary (:sc unsigned-reg) temp bsp)
337 (load-symbol-value bsp *binding-stack-pointer*)
338 (loadw temp symbol symbol-value-slot other-pointer-lowtag)
339 (inst add bsp (* binding-size n-word-bytes))
340 (store-symbol-value bsp *binding-stack-pointer*)
341 (storew temp bsp (- binding-value-slot binding-size))
342 (storew symbol bsp (- binding-symbol-slot binding-size))
343 (storew val symbol symbol-value-slot other-pointer-lowtag)))
349 (:temporary (:sc unsigned-reg) symbol value bsp tls-index)
351 (load-binding-stack-pointer bsp)
352 (loadw symbol bsp (- binding-symbol-slot binding-size))
353 (loadw value bsp (- binding-value-slot binding-size))
355 (loadw tls-index symbol symbol-tls-index-slot other-pointer-lowtag)
356 (inst fs-segment-prefix)
357 (inst mov (make-ea :dword :base tls-index) value)
359 (storew 0 bsp (- binding-value-slot binding-size))
360 (storew 0 bsp (- binding-symbol-slot binding-size))
361 (inst sub bsp (* binding-size n-word-bytes))
362 (store-binding-stack-pointer bsp)))
366 (:temporary (:sc unsigned-reg) symbol value bsp)
368 (load-symbol-value bsp *binding-stack-pointer*)
369 (loadw symbol bsp (- binding-symbol-slot binding-size))
370 (loadw value bsp (- binding-value-slot binding-size))
371 (storew value symbol symbol-value-slot other-pointer-lowtag)
372 (storew 0 bsp (- binding-value-slot binding-size))
373 (storew 0 bsp (- binding-symbol-slot binding-size))
374 (inst sub bsp (* binding-size n-word-bytes))
375 (store-symbol-value bsp *binding-stack-pointer*)))
378 (define-vop (unbind-to-here)
379 (:args (where :scs (descriptor-reg any-reg)))
380 (:temporary (:sc unsigned-reg) symbol value bsp #!+sb-thread tls-index)
382 (load-binding-stack-pointer bsp)
387 (loadw symbol bsp (- binding-symbol-slot binding-size))
388 (inst or symbol symbol)
390 (loadw value bsp (- binding-value-slot binding-size))
391 #!-sb-thread (storew value symbol symbol-value-slot other-pointer-lowtag)
394 tls-index symbol symbol-tls-index-slot other-pointer-lowtag)
395 #!+sb-thread (inst fs-segment-prefix)
396 #!+sb-thread (inst mov (make-ea :dword :base tls-index) value)
397 (storew 0 bsp (- binding-value-slot binding-size))
398 (storew 0 bsp (- binding-symbol-slot binding-size))
401 (inst sub bsp (* binding-size n-word-bytes))
404 (store-binding-stack-pointer bsp)
410 ;;;; closure indexing
412 (define-full-reffer closure-index-ref *
413 closure-info-offset fun-pointer-lowtag
414 (any-reg descriptor-reg) * %closure-index-ref)
416 (define-full-setter set-funcallable-instance-info *
417 funcallable-instance-info-offset fun-pointer-lowtag
418 (any-reg descriptor-reg) * %set-funcallable-instance-info)
420 (define-full-reffer funcallable-instance-info *
421 funcallable-instance-info-offset fun-pointer-lowtag
422 (descriptor-reg any-reg) * %funcallable-instance-info)
424 (define-vop (funcallable-instance-lexenv cell-ref)
425 (:variant funcallable-instance-lexenv-slot fun-pointer-lowtag))
427 (define-vop (closure-ref slot-ref)
428 (:variant closure-info-offset fun-pointer-lowtag))
430 (define-vop (closure-init slot-set)
431 (:variant closure-info-offset fun-pointer-lowtag))
433 ;;;; value cell hackery
435 (define-vop (value-cell-ref cell-ref)
436 (:variant value-cell-value-slot other-pointer-lowtag))
438 (define-vop (value-cell-set cell-set)
439 (:variant value-cell-value-slot other-pointer-lowtag))
441 ;;;; structure hackery
443 (define-vop (instance-length)
445 (:translate %instance-length)
446 (:args (struct :scs (descriptor-reg)))
447 (:results (res :scs (unsigned-reg)))
448 (:result-types positive-fixnum)
450 (loadw res struct 0 instance-pointer-lowtag)
451 (inst shr res n-widetag-bits)))
453 (define-full-reffer instance-index-ref * instance-slots-offset
454 instance-pointer-lowtag (any-reg descriptor-reg) * %instance-ref)
456 (define-full-setter instance-index-set * instance-slots-offset
457 instance-pointer-lowtag (any-reg descriptor-reg) * %instance-set)
460 (defknown %instance-set-conditional (instance index t t) t
463 (define-vop (instance-set-conditional)
464 (:translate %instance-set-conditional)
465 (:args (object :scs (descriptor-reg) :to :eval)
466 (slot :scs (any-reg) :to :result)
467 (old-value :scs (descriptor-reg any-reg) :target eax)
468 (new-value :scs (descriptor-reg any-reg)))
469 (:arg-types instance positive-fixnum * *)
470 (:temporary (:sc descriptor-reg :offset eax-offset
471 :from (:argument 2) :to :result :target result) eax)
472 (:results (result :scs (descriptor-reg any-reg)))
473 ;(:guard (backend-featurep :i486))
478 (inst cmpxchg (make-ea :dword :base object :index slot :scale 1
479 :disp (- (* instance-slots-offset n-word-bytes)
480 instance-pointer-lowtag))
486 ;;;; code object frobbing
488 (define-full-reffer code-header-ref * 0 other-pointer-lowtag
489 (any-reg descriptor-reg) * code-header-ref)
491 (define-full-setter code-header-set * 0 other-pointer-lowtag
492 (any-reg descriptor-reg) * code-header-set)
496 ;;;; raw instance slot accessors
498 (defun make-ea-for-raw-slot (object index instance-length n-words)
500 (any-reg (make-ea :dword
502 :index instance-length
503 :disp (- (* (- instance-slots-offset n-words)
505 instance-pointer-lowtag)))
506 (immediate (make-ea :dword :base object
507 :index instance-length
509 :disp (- (* (- instance-slots-offset n-words)
511 instance-pointer-lowtag
512 (fixnumize (tn-value index)))))))
514 (define-vop (raw-instance-ref/word)
515 (:translate %raw-instance-ref/word)
517 (:args (object :scs (descriptor-reg)) (index :scs (any-reg immediate)))
518 (:arg-types * tagged-num)
519 (:temporary (:sc unsigned-reg) tmp)
520 (:results (value :scs (unsigned-reg)))
521 (:result-types unsigned-num)
523 (loadw tmp object 0 instance-pointer-lowtag)
524 (inst shr tmp n-widetag-bits)
525 (when (sc-is index any-reg)
527 (inst sub tmp index))
528 (inst mov value (make-ea-for-raw-slot object index tmp 1))))
530 (define-vop (raw-instance-set/word)
531 (:translate %raw-instance-set/word)
533 (:args (object :scs (descriptor-reg))
534 (index :scs (any-reg immediate))
535 (value :scs (unsigned-reg) :target result))
536 (:arg-types * tagged-num unsigned-num)
537 (:temporary (:sc unsigned-reg) tmp)
538 (:results (result :scs (unsigned-reg)))
539 (:result-types unsigned-num)
541 (loadw tmp object 0 instance-pointer-lowtag)
542 (inst shr tmp n-widetag-bits)
543 (when (sc-is index any-reg)
545 (inst sub tmp index))
546 (inst mov (make-ea-for-raw-slot object index tmp 1) value)
547 (move result value)))
549 (define-vop (raw-instance-ref/single)
550 (:translate %raw-instance-ref/single)
552 (:args (object :scs (descriptor-reg)) (index :scs (any-reg immediate)))
553 (:arg-types * tagged-num)
554 (:temporary (:sc unsigned-reg) tmp)
555 (:results (value :scs (single-reg)))
556 (:result-types single-float)
558 (loadw tmp object 0 instance-pointer-lowtag)
559 (inst shr tmp n-widetag-bits)
560 (when (sc-is index any-reg)
562 (inst sub tmp index))
563 (with-empty-tn@fp-top(value)
564 (inst fld (make-ea-for-raw-slot object index tmp 1)))))
566 (define-vop (raw-instance-set/single)
567 (:translate %raw-instance-set/single)
569 (:args (object :scs (descriptor-reg))
570 (index :scs (any-reg immediate))
571 (value :scs (single-reg) :target result))
572 (:arg-types * tagged-num single-float)
573 (:temporary (:sc unsigned-reg) tmp)
574 (:results (result :scs (single-reg)))
575 (:result-types single-float)
577 (loadw tmp object 0 instance-pointer-lowtag)
578 (inst shr tmp n-widetag-bits)
579 (when (sc-is index any-reg)
581 (inst sub tmp index))
582 (unless (zerop (tn-offset value))
584 (inst fst (make-ea-for-raw-slot object index tmp 1))
586 ((zerop (tn-offset value))
587 (unless (zerop (tn-offset result))
589 ((zerop (tn-offset result))
592 (unless (location= value result)
594 (inst fxch value)))))
596 (define-vop (raw-instance-ref/double)
597 (:translate %raw-instance-ref/double)
599 (:args (object :scs (descriptor-reg)) (index :scs (any-reg immediate)))
600 (:arg-types * tagged-num)
601 (:temporary (:sc unsigned-reg) tmp)
602 (:results (value :scs (double-reg)))
603 (:result-types double-float)
605 (loadw tmp object 0 instance-pointer-lowtag)
606 (inst shr tmp n-widetag-bits)
607 (when (sc-is index any-reg)
609 (inst sub tmp index))
610 (with-empty-tn@fp-top(value)
611 (inst fldd (make-ea-for-raw-slot object index tmp 2)))))
613 (define-vop (raw-instance-set/double)
614 (:translate %raw-instance-set/double)
616 (:args (object :scs (descriptor-reg))
617 (index :scs (any-reg immediate))
618 (value :scs (double-reg) :target result))
619 (:arg-types * tagged-num double-float)
620 (:temporary (:sc unsigned-reg) tmp)
621 (:results (result :scs (double-reg)))
622 (:result-types double-float)
624 (loadw tmp object 0 instance-pointer-lowtag)
625 (inst shr tmp n-widetag-bits)
626 (when (sc-is index any-reg)
628 (inst sub tmp index))
629 (unless (zerop (tn-offset value))
631 (inst fstd (make-ea-for-raw-slot object index tmp 2))
633 ((zerop (tn-offset value))
634 (unless (zerop (tn-offset result))
636 ((zerop (tn-offset result))
639 (unless (location= value result)
641 (inst fxch value)))))
643 (define-vop (raw-instance-ref/complex-single)
644 (:translate %raw-instance-ref/complex-single)
646 (:args (object :scs (descriptor-reg))
647 (index :scs (any-reg immediate)))
648 (:arg-types * positive-fixnum)
649 (:temporary (:sc unsigned-reg) tmp)
650 (:results (value :scs (complex-single-reg)))
651 (:result-types complex-single-float)
653 (loadw tmp object 0 instance-pointer-lowtag)
654 (inst shr tmp n-widetag-bits)
655 (when (sc-is index any-reg)
657 (inst sub tmp index))
658 (let ((real-tn (complex-single-reg-real-tn value)))
659 (with-empty-tn@fp-top (real-tn)
660 (inst fld (make-ea-for-raw-slot object index tmp 2))))
661 (let ((imag-tn (complex-single-reg-imag-tn value)))
662 (with-empty-tn@fp-top (imag-tn)
663 (inst fld (make-ea-for-raw-slot object index tmp 1))))))
665 (define-vop (raw-instance-set/complex-single)
666 (:translate %raw-instance-set/complex-single)
668 (:args (object :scs (descriptor-reg))
669 (index :scs (any-reg immediate))
670 (value :scs (complex-single-reg) :target result))
671 (:arg-types * positive-fixnum complex-single-float)
672 (:temporary (:sc unsigned-reg) tmp)
673 (:results (result :scs (complex-single-reg)))
674 (:result-types complex-single-float)
676 (loadw tmp object 0 instance-pointer-lowtag)
677 (inst shr tmp n-widetag-bits)
678 (when (sc-is index any-reg)
680 (inst sub tmp index))
681 (let ((value-real (complex-single-reg-real-tn value))
682 (result-real (complex-single-reg-real-tn result)))
683 (cond ((zerop (tn-offset value-real))
685 (inst fst (make-ea-for-raw-slot object index tmp 2))
686 (unless (zerop (tn-offset result-real))
687 ;; Value is in ST0 but not result.
688 (inst fst result-real)))
690 ;; Value is not in ST0.
691 (inst fxch value-real)
692 (inst fst (make-ea-for-raw-slot object index tmp 2))
693 (cond ((zerop (tn-offset result-real))
694 ;; The result is in ST0.
695 (inst fst value-real))
697 ;; Neither value or result are in ST0
698 (unless (location= value-real result-real)
699 (inst fst result-real))
700 (inst fxch value-real))))))
701 (let ((value-imag (complex-single-reg-imag-tn value))
702 (result-imag (complex-single-reg-imag-tn result)))
703 (inst fxch value-imag)
704 (inst fst (make-ea-for-raw-slot object index tmp 1))
705 (unless (location= value-imag result-imag)
706 (inst fst result-imag))
707 (inst fxch value-imag))))
709 (define-vop (raw-instance-ref/complex-double)
710 (:translate %raw-instance-ref/complex-double)
712 (:args (object :scs (descriptor-reg))
713 (index :scs (any-reg immediate)))
714 (:arg-types * positive-fixnum)
715 (:temporary (:sc unsigned-reg) tmp)
716 (:results (value :scs (complex-double-reg)))
717 (:result-types complex-double-float)
719 (loadw tmp object 0 instance-pointer-lowtag)
720 (inst shr tmp n-widetag-bits)
721 (when (sc-is index any-reg)
723 (inst sub tmp index))
724 (let ((real-tn (complex-double-reg-real-tn value)))
725 (with-empty-tn@fp-top (real-tn)
726 (inst fldd (make-ea-for-raw-slot object index tmp 4))))
727 (let ((imag-tn (complex-double-reg-imag-tn value)))
728 (with-empty-tn@fp-top (imag-tn)
729 (inst fldd (make-ea-for-raw-slot object index tmp 2))))))
731 (define-vop (raw-instance-set/complex-double)
732 (:translate %raw-instance-set/complex-double)
734 (:args (object :scs (descriptor-reg))
735 (index :scs (any-reg immediate))
736 (value :scs (complex-double-reg) :target result))
737 (:arg-types * positive-fixnum complex-double-float)
738 (:temporary (:sc unsigned-reg) tmp)
739 (:results (result :scs (complex-double-reg)))
740 (:result-types complex-double-float)
742 (loadw tmp object 0 instance-pointer-lowtag)
743 (inst shr tmp n-widetag-bits)
744 (when (sc-is index any-reg)
746 (inst sub tmp index))
747 (let ((value-real (complex-double-reg-real-tn value))
748 (result-real (complex-double-reg-real-tn result)))
749 (cond ((zerop (tn-offset value-real))
751 (inst fstd (make-ea-for-raw-slot object index tmp 4))
752 (unless (zerop (tn-offset result-real))
753 ;; Value is in ST0 but not result.
754 (inst fstd result-real)))
756 ;; Value is not in ST0.
757 (inst fxch value-real)
758 (inst fstd (make-ea-for-raw-slot object index tmp 4))
759 (cond ((zerop (tn-offset result-real))
760 ;; The result is in ST0.
761 (inst fstd value-real))
763 ;; Neither value or result are in ST0
764 (unless (location= value-real result-real)
765 (inst fstd result-real))
766 (inst fxch value-real))))))
767 (let ((value-imag (complex-double-reg-imag-tn value))
768 (result-imag (complex-double-reg-imag-tn result)))
769 (inst fxch value-imag)
770 (inst fstd (make-ea-for-raw-slot object index tmp 2))
771 (unless (location= value-imag result-imag)
772 (inst fstd result-imag))
773 (inst fxch value-imag))))