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-tl-symbol-value bsp *binding-stack-pointer*)
297 (loadw tls-index symbol symbol-tls-index-slot other-pointer-lowtag)
298 (inst add bsp (* binding-size n-word-bytes))
299 (store-tl-symbol-value bsp *binding-stack-pointer* temp)
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-tl-symbol-value bsp *binding-stack-pointer*)
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-symbol-slot binding-size))
361 (inst sub bsp (* binding-size n-word-bytes))
362 ;; we're done with value, so we can use it as a temp here
363 (store-tl-symbol-value bsp *binding-stack-pointer* value)))
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-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-tl-symbol-value bsp *binding-stack-pointer*)
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 :scale 1 :index tls-index) value)
397 (storew 0 bsp (- binding-symbol-slot binding-size))
400 (inst sub bsp (* binding-size n-word-bytes))
403 ;; we're done with value, so can use it as a temporary
404 (store-tl-symbol-value bsp *binding-stack-pointer* value)
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-vop (instance-ref slot-ref)
454 (:variant instance-slots-offset instance-pointer-lowtag)
456 (:translate %instance-ref)
457 (:arg-types instance (:constant index)))
459 (define-vop (instance-set slot-set)
461 (:translate %instance-set)
462 (:variant instance-slots-offset instance-pointer-lowtag)
463 (:arg-types instance (:constant index) *))
465 (define-full-reffer instance-index-ref * instance-slots-offset
466 instance-pointer-lowtag (any-reg descriptor-reg) * %instance-ref)
468 (define-full-setter instance-index-set * instance-slots-offset
469 instance-pointer-lowtag (any-reg descriptor-reg) * %instance-set)
472 (defknown %instance-set-conditional (instance index t t) t
475 (define-vop (instance-set-conditional)
476 (:translate %instance-set-conditional)
477 (:args (object :scs (descriptor-reg) :to :eval)
478 (slot :scs (any-reg) :to :result)
479 (old-value :scs (descriptor-reg any-reg) :target eax)
480 (new-value :scs (descriptor-reg any-reg)))
481 (:arg-types instance positive-fixnum * *)
482 (:temporary (:sc descriptor-reg :offset eax-offset
483 :from (:argument 2) :to :result :target result) eax)
484 (:results (result :scs (descriptor-reg any-reg)))
485 ;(:guard (backend-featurep :i486))
490 (inst cmpxchg (make-ea :dword :base object :index slot :scale 1
491 :disp (- (* instance-slots-offset n-word-bytes)
492 instance-pointer-lowtag))
498 ;;;; code object frobbing
500 (define-full-reffer code-header-ref * 0 other-pointer-lowtag
501 (any-reg descriptor-reg) * code-header-ref)
503 (define-full-setter code-header-set * 0 other-pointer-lowtag
504 (any-reg descriptor-reg) * code-header-set)
508 ;;;; raw instance slot accessors
510 (define-vop (raw-instance-ref/word)
511 (:translate %raw-instance-ref/word)
513 (:args (object :scs (descriptor-reg)) (index :scs (any-reg)))
514 (:arg-types * tagged-num)
515 (:temporary (:sc unsigned-reg) tmp)
516 (:results (value :scs (unsigned-reg)))
517 (:result-types unsigned-num)
519 (loadw tmp object 0 instance-pointer-lowtag)
520 (inst shr tmp n-widetag-bits)
528 :disp (- (* (1- instance-slots-offset) n-word-bytes)
529 instance-pointer-lowtag)))))
531 (define-vop (raw-instance-set/word)
532 (:translate %raw-instance-set/word)
534 (:args (object :scs (descriptor-reg))
535 (index :scs (any-reg))
536 (value :scs (unsigned-reg) :target result))
537 (:arg-types * tagged-num unsigned-num)
538 (:temporary (:sc unsigned-reg) tmp)
539 (:results (result :scs (unsigned-reg)))
540 (:result-types unsigned-num)
542 (loadw tmp object 0 instance-pointer-lowtag)
543 (inst shr tmp n-widetag-bits)
550 :disp (- (* (1- instance-slots-offset) n-word-bytes)
551 instance-pointer-lowtag))
553 (move result value)))
555 (define-vop (raw-instance-ref/single)
556 (:translate %raw-instance-ref/single)
558 (:args (object :scs (descriptor-reg)) (index :scs (any-reg)))
559 (:arg-types * tagged-num)
560 (:temporary (:sc unsigned-reg) tmp)
561 (:results (value :scs (single-reg)))
562 (:result-types single-float)
564 (loadw tmp object 0 instance-pointer-lowtag)
565 (inst shr tmp n-widetag-bits)
568 (with-empty-tn@fp-top(value)
573 :disp (- (* (1- instance-slots-offset) n-word-bytes)
574 instance-pointer-lowtag))))))
576 (define-vop (raw-instance-set/single)
577 (:translate %raw-instance-set/single)
579 (:args (object :scs (descriptor-reg))
580 (index :scs (any-reg))
581 (value :scs (single-reg) :target result))
582 (:arg-types * tagged-num single-float)
583 (:temporary (:sc unsigned-reg) tmp)
584 (:results (result :scs (single-reg)))
585 (:result-types single-float)
587 (loadw tmp object 0 instance-pointer-lowtag)
588 (inst shr tmp n-widetag-bits)
591 (unless (zerop (tn-offset value))
597 :disp (- (* (1- instance-slots-offset) n-word-bytes)
598 instance-pointer-lowtag)))
600 ((zerop (tn-offset value))
601 (unless (zerop (tn-offset result))
603 ((zerop (tn-offset result))
606 (unless (location= value result)
608 (inst fxch value)))))
610 (define-vop (raw-instance-ref/double)
611 (:translate %raw-instance-ref/double)
613 (:args (object :scs (descriptor-reg)) (index :scs (any-reg)))
614 (:arg-types * tagged-num)
615 (:temporary (:sc unsigned-reg) tmp)
616 (:results (value :scs (double-reg)))
617 (:result-types double-float)
619 (loadw tmp object 0 instance-pointer-lowtag)
620 (inst shr tmp n-widetag-bits)
623 (with-empty-tn@fp-top(value)
628 :disp (- (* (- instance-slots-offset 2) n-word-bytes)
629 instance-pointer-lowtag))))))
631 (define-vop (raw-instance-set/double)
632 (:translate %raw-instance-set/double)
634 (:args (object :scs (descriptor-reg))
635 (index :scs (any-reg))
636 (value :scs (double-reg) :target result))
637 (:arg-types * tagged-num double-float)
638 (:temporary (:sc unsigned-reg) tmp)
639 (:results (result :scs (double-reg)))
640 (:result-types double-float)
642 (loadw tmp object 0 instance-pointer-lowtag)
643 (inst shr tmp n-widetag-bits)
646 (unless (zerop (tn-offset value))
652 :disp (- (* (- instance-slots-offset 2) n-word-bytes)
653 instance-pointer-lowtag)))
655 ((zerop (tn-offset value))
656 (unless (zerop (tn-offset result))
658 ((zerop (tn-offset result))
661 (unless (location= value result)
663 (inst fxch value)))))
665 (define-vop (raw-instance-ref/complex-single)
666 (:translate %raw-instance-ref/complex-single)
668 (:args (object :scs (descriptor-reg))
669 (index :scs (any-reg)))
670 (:arg-types * positive-fixnum)
671 (:temporary (:sc unsigned-reg) tmp)
672 (:results (value :scs (complex-single-reg)))
673 (:result-types complex-single-float)
675 (loadw tmp object 0 instance-pointer-lowtag)
676 (inst shr tmp n-widetag-bits)
679 (let ((real-tn (complex-single-reg-real-tn value)))
680 (with-empty-tn@fp-top (real-tn)
681 (inst fld (make-ea :dword
684 :disp (- (* (- instance-slots-offset 2)
686 instance-pointer-lowtag)))))
687 (let ((imag-tn (complex-single-reg-imag-tn value)))
688 (with-empty-tn@fp-top (imag-tn)
689 (inst fld (make-ea :dword
692 :disp (- (* (1- instance-slots-offset)
694 instance-pointer-lowtag)))))))
696 (define-vop (raw-instance-set/complex-single)
697 (:translate %raw-instance-set/complex-single)
699 (:args (object :scs (descriptor-reg))
700 (index :scs (any-reg))
701 (value :scs (complex-single-reg) :target result))
702 (:arg-types * positive-fixnum complex-single-float)
703 (:temporary (:sc unsigned-reg) tmp)
704 (:results (result :scs (complex-single-reg)))
705 (:result-types complex-single-float)
707 (loadw tmp object 0 instance-pointer-lowtag)
708 (inst shr tmp n-widetag-bits)
711 (let ((value-real (complex-single-reg-real-tn value))
712 (result-real (complex-single-reg-real-tn result)))
713 (cond ((zerop (tn-offset value-real))
715 (inst fst (make-ea :dword
718 :disp (- (* (- instance-slots-offset 2)
720 instance-pointer-lowtag)))
721 (unless (zerop (tn-offset result-real))
722 ;; Value is in ST0 but not result.
723 (inst fst result-real)))
725 ;; Value is not in ST0.
726 (inst fxch value-real)
727 (inst fst (make-ea :dword
730 :disp (- (* (- instance-slots-offset 2)
732 instance-pointer-lowtag)))
733 (cond ((zerop (tn-offset result-real))
734 ;; The result is in ST0.
735 (inst fst value-real))
737 ;; Neither value or result are in ST0
738 (unless (location= value-real result-real)
739 (inst fst result-real))
740 (inst fxch value-real))))))
741 (let ((value-imag (complex-single-reg-imag-tn value))
742 (result-imag (complex-single-reg-imag-tn result)))
743 (inst fxch value-imag)
744 (inst fst (make-ea :dword
747 :disp (- (* (1- instance-slots-offset)
749 instance-pointer-lowtag)))
750 (unless (location= value-imag result-imag)
751 (inst fst result-imag))
752 (inst fxch value-imag))))
754 (define-vop (raw-instance-ref/complex-double)
755 (:translate %raw-instance-ref/complex-double)
757 (:args (object :scs (descriptor-reg))
758 (index :scs (any-reg)))
759 (:arg-types * positive-fixnum)
760 (:temporary (:sc unsigned-reg) tmp)
761 (:results (value :scs (complex-double-reg)))
762 (:result-types complex-double-float)
764 (loadw tmp object 0 instance-pointer-lowtag)
765 (inst shr tmp n-widetag-bits)
768 (let ((real-tn (complex-double-reg-real-tn value)))
769 (with-empty-tn@fp-top (real-tn)
770 (inst fldd (make-ea :dword
773 :disp (- (* (- instance-slots-offset 4)
775 instance-pointer-lowtag)))))
776 (let ((imag-tn (complex-double-reg-imag-tn value)))
777 (with-empty-tn@fp-top (imag-tn)
778 (inst fldd (make-ea :dword
781 :disp (- (* (- instance-slots-offset 2)
783 instance-pointer-lowtag)))))))
785 (define-vop (raw-instance-set/complex-double)
786 (:translate %raw-instance-set/complex-double)
788 (:args (object :scs (descriptor-reg))
789 (index :scs (any-reg))
790 (value :scs (complex-double-reg) :target result))
791 (:arg-types * positive-fixnum complex-double-float)
792 (:temporary (:sc unsigned-reg) tmp)
793 (:results (result :scs (complex-double-reg)))
794 (:result-types complex-double-float)
796 (loadw tmp object 0 instance-pointer-lowtag)
797 (inst shr tmp n-widetag-bits)
800 (let ((value-real (complex-double-reg-real-tn value))
801 (result-real (complex-double-reg-real-tn result)))
802 (cond ((zerop (tn-offset value-real))
804 (inst fstd (make-ea :dword
807 :disp (- (* (- instance-slots-offset 4)
809 instance-pointer-lowtag)))
810 (unless (zerop (tn-offset result-real))
811 ;; Value is in ST0 but not result.
812 (inst fstd result-real)))
814 ;; Value is not in ST0.
815 (inst fxch value-real)
816 (inst fstd (make-ea :dword
819 :disp (- (* (- instance-slots-offset 4)
821 instance-pointer-lowtag)))
822 (cond ((zerop (tn-offset result-real))
823 ;; The result is in ST0.
824 (inst fstd value-real))
826 ;; Neither value or result are in ST0
827 (unless (location= value-real result-real)
828 (inst fstd result-real))
829 (inst fxch value-real))))))
830 (let ((value-imag (complex-double-reg-imag-tn value))
831 (result-imag (complex-double-reg-imag-tn result)))
832 (inst fxch value-imag)
833 (inst fstd (make-ea :dword
836 :disp (- (* (- instance-slots-offset 2)
838 instance-pointer-lowtag)))
839 (unless (location= value-imag result-imag)
840 (inst fstd result-imag))
841 (inst fxch value-imag))))