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-vop (instance-ref slot-ref)
455 (:variant instance-slots-offset instance-pointer-lowtag)
457 (:translate %instance-ref)
458 (:arg-types instance (:constant index)))
460 (define-vop (instance-set slot-set)
462 (:translate %instance-set)
463 (:variant instance-slots-offset instance-pointer-lowtag)
464 (:arg-types instance (:constant index) *))
466 (define-full-reffer instance-index-ref * instance-slots-offset
467 instance-pointer-lowtag (any-reg descriptor-reg) * %instance-ref)
469 (define-full-setter instance-index-set * instance-slots-offset
470 instance-pointer-lowtag (any-reg descriptor-reg) * %instance-set)
473 (defknown %instance-set-conditional (instance index t t) t
476 (define-vop (instance-set-conditional)
477 (:translate %instance-set-conditional)
478 (:args (object :scs (descriptor-reg) :to :eval)
479 (slot :scs (any-reg) :to :result)
480 (old-value :scs (descriptor-reg any-reg) :target eax)
481 (new-value :scs (descriptor-reg any-reg)))
482 (:arg-types instance positive-fixnum * *)
483 (:temporary (:sc descriptor-reg :offset eax-offset
484 :from (:argument 2) :to :result :target result) eax)
485 (:results (result :scs (descriptor-reg any-reg)))
486 ;(:guard (backend-featurep :i486))
491 (inst cmpxchg (make-ea :dword :base object :index slot :scale 1
492 :disp (- (* instance-slots-offset n-word-bytes)
493 instance-pointer-lowtag))
499 ;;;; code object frobbing
501 (define-full-reffer code-header-ref * 0 other-pointer-lowtag
502 (any-reg descriptor-reg) * code-header-ref)
504 (define-full-setter code-header-set * 0 other-pointer-lowtag
505 (any-reg descriptor-reg) * code-header-set)
509 ;;;; raw instance slot accessors
511 (define-vop (raw-instance-ref/word)
512 (:translate %raw-instance-ref/word)
514 (:args (object :scs (descriptor-reg)) (index :scs (any-reg)))
515 (:arg-types * tagged-num)
516 (:temporary (:sc unsigned-reg) tmp)
517 (:results (value :scs (unsigned-reg)))
518 (:result-types unsigned-num)
520 (loadw tmp object 0 instance-pointer-lowtag)
521 (inst shr tmp n-widetag-bits)
529 :disp (- (* (1- instance-slots-offset) n-word-bytes)
530 instance-pointer-lowtag)))))
532 (define-vop (raw-instance-set/word)
533 (:translate %raw-instance-set/word)
535 (:args (object :scs (descriptor-reg))
536 (index :scs (any-reg))
537 (value :scs (unsigned-reg) :target result))
538 (:arg-types * tagged-num unsigned-num)
539 (:temporary (:sc unsigned-reg) tmp)
540 (:results (result :scs (unsigned-reg)))
541 (:result-types unsigned-num)
543 (loadw tmp object 0 instance-pointer-lowtag)
544 (inst shr tmp n-widetag-bits)
551 :disp (- (* (1- instance-slots-offset) n-word-bytes)
552 instance-pointer-lowtag))
554 (move result value)))
556 (define-vop (raw-instance-ref/single)
557 (:translate %raw-instance-ref/single)
559 (:args (object :scs (descriptor-reg)) (index :scs (any-reg)))
560 (:arg-types * tagged-num)
561 (:temporary (:sc unsigned-reg) tmp)
562 (:results (value :scs (single-reg)))
563 (:result-types single-float)
565 (loadw tmp object 0 instance-pointer-lowtag)
566 (inst shr tmp n-widetag-bits)
569 (with-empty-tn@fp-top(value)
574 :disp (- (* (1- instance-slots-offset) n-word-bytes)
575 instance-pointer-lowtag))))))
577 (define-vop (raw-instance-set/single)
578 (:translate %raw-instance-set/single)
580 (:args (object :scs (descriptor-reg))
581 (index :scs (any-reg))
582 (value :scs (single-reg) :target result))
583 (:arg-types * tagged-num single-float)
584 (:temporary (:sc unsigned-reg) tmp)
585 (:results (result :scs (single-reg)))
586 (:result-types single-float)
588 (loadw tmp object 0 instance-pointer-lowtag)
589 (inst shr tmp n-widetag-bits)
592 (unless (zerop (tn-offset value))
598 :disp (- (* (1- instance-slots-offset) n-word-bytes)
599 instance-pointer-lowtag)))
601 ((zerop (tn-offset value))
602 (unless (zerop (tn-offset result))
604 ((zerop (tn-offset result))
607 (unless (location= value result)
609 (inst fxch value)))))
611 (define-vop (raw-instance-ref/double)
612 (:translate %raw-instance-ref/double)
614 (:args (object :scs (descriptor-reg)) (index :scs (any-reg)))
615 (:arg-types * tagged-num)
616 (:temporary (:sc unsigned-reg) tmp)
617 (:results (value :scs (double-reg)))
618 (:result-types double-float)
620 (loadw tmp object 0 instance-pointer-lowtag)
621 (inst shr tmp n-widetag-bits)
624 (with-empty-tn@fp-top(value)
629 :disp (- (* (- instance-slots-offset 2) n-word-bytes)
630 instance-pointer-lowtag))))))
632 (define-vop (raw-instance-set/double)
633 (:translate %raw-instance-set/double)
635 (:args (object :scs (descriptor-reg))
636 (index :scs (any-reg))
637 (value :scs (double-reg) :target result))
638 (:arg-types * tagged-num double-float)
639 (:temporary (:sc unsigned-reg) tmp)
640 (:results (result :scs (double-reg)))
641 (:result-types double-float)
643 (loadw tmp object 0 instance-pointer-lowtag)
644 (inst shr tmp n-widetag-bits)
647 (unless (zerop (tn-offset value))
653 :disp (- (* (- instance-slots-offset 2) n-word-bytes)
654 instance-pointer-lowtag)))
656 ((zerop (tn-offset value))
657 (unless (zerop (tn-offset result))
659 ((zerop (tn-offset result))
662 (unless (location= value result)
664 (inst fxch value)))))
666 (define-vop (raw-instance-ref/complex-single)
667 (:translate %raw-instance-ref/complex-single)
669 (:args (object :scs (descriptor-reg))
670 (index :scs (any-reg)))
671 (:arg-types * positive-fixnum)
672 (:temporary (:sc unsigned-reg) tmp)
673 (:results (value :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)
680 (let ((real-tn (complex-single-reg-real-tn value)))
681 (with-empty-tn@fp-top (real-tn)
682 (inst fld (make-ea :dword
685 :disp (- (* (- instance-slots-offset 2)
687 instance-pointer-lowtag)))))
688 (let ((imag-tn (complex-single-reg-imag-tn value)))
689 (with-empty-tn@fp-top (imag-tn)
690 (inst fld (make-ea :dword
693 :disp (- (* (1- instance-slots-offset)
695 instance-pointer-lowtag)))))))
697 (define-vop (raw-instance-set/complex-single)
698 (:translate %raw-instance-set/complex-single)
700 (:args (object :scs (descriptor-reg))
701 (index :scs (any-reg))
702 (value :scs (complex-single-reg) :target result))
703 (:arg-types * positive-fixnum complex-single-float)
704 (:temporary (:sc unsigned-reg) tmp)
705 (:results (result :scs (complex-single-reg)))
706 (:result-types complex-single-float)
708 (loadw tmp object 0 instance-pointer-lowtag)
709 (inst shr tmp n-widetag-bits)
712 (let ((value-real (complex-single-reg-real-tn value))
713 (result-real (complex-single-reg-real-tn result)))
714 (cond ((zerop (tn-offset value-real))
716 (inst fst (make-ea :dword
719 :disp (- (* (- instance-slots-offset 2)
721 instance-pointer-lowtag)))
722 (unless (zerop (tn-offset result-real))
723 ;; Value is in ST0 but not result.
724 (inst fst result-real)))
726 ;; Value is not in ST0.
727 (inst fxch value-real)
728 (inst fst (make-ea :dword
731 :disp (- (* (- instance-slots-offset 2)
733 instance-pointer-lowtag)))
734 (cond ((zerop (tn-offset result-real))
735 ;; The result is in ST0.
736 (inst fst value-real))
738 ;; Neither value or result are in ST0
739 (unless (location= value-real result-real)
740 (inst fst result-real))
741 (inst fxch value-real))))))
742 (let ((value-imag (complex-single-reg-imag-tn value))
743 (result-imag (complex-single-reg-imag-tn result)))
744 (inst fxch value-imag)
745 (inst fst (make-ea :dword
748 :disp (- (* (1- instance-slots-offset)
750 instance-pointer-lowtag)))
751 (unless (location= value-imag result-imag)
752 (inst fst result-imag))
753 (inst fxch value-imag))))
755 (define-vop (raw-instance-ref/complex-double)
756 (:translate %raw-instance-ref/complex-double)
758 (:args (object :scs (descriptor-reg))
759 (index :scs (any-reg)))
760 (:arg-types * positive-fixnum)
761 (:temporary (:sc unsigned-reg) tmp)
762 (:results (value :scs (complex-double-reg)))
763 (:result-types complex-double-float)
765 (loadw tmp object 0 instance-pointer-lowtag)
766 (inst shr tmp n-widetag-bits)
769 (let ((real-tn (complex-double-reg-real-tn value)))
770 (with-empty-tn@fp-top (real-tn)
771 (inst fldd (make-ea :dword
774 :disp (- (* (- instance-slots-offset 4)
776 instance-pointer-lowtag)))))
777 (let ((imag-tn (complex-double-reg-imag-tn value)))
778 (with-empty-tn@fp-top (imag-tn)
779 (inst fldd (make-ea :dword
782 :disp (- (* (- instance-slots-offset 2)
784 instance-pointer-lowtag)))))))
786 (define-vop (raw-instance-set/complex-double)
787 (:translate %raw-instance-set/complex-double)
789 (:args (object :scs (descriptor-reg))
790 (index :scs (any-reg))
791 (value :scs (complex-double-reg) :target result))
792 (:arg-types * positive-fixnum complex-double-float)
793 (:temporary (:sc unsigned-reg) tmp)
794 (:results (result :scs (complex-double-reg)))
795 (:result-types complex-double-float)
797 (loadw tmp object 0 instance-pointer-lowtag)
798 (inst shr tmp n-widetag-bits)
801 (let ((value-real (complex-double-reg-real-tn value))
802 (result-real (complex-double-reg-real-tn result)))
803 (cond ((zerop (tn-offset value-real))
805 (inst fstd (make-ea :dword
808 :disp (- (* (- instance-slots-offset 4)
810 instance-pointer-lowtag)))
811 (unless (zerop (tn-offset result-real))
812 ;; Value is in ST0 but not result.
813 (inst fstd result-real)))
815 ;; Value is not in ST0.
816 (inst fxch value-real)
817 (inst fstd (make-ea :dword
820 :disp (- (* (- instance-slots-offset 4)
822 instance-pointer-lowtag)))
823 (cond ((zerop (tn-offset result-real))
824 ;; The result is in ST0.
825 (inst fstd value-real))
827 ;; Neither value or result are in ST0
828 (unless (location= value-real result-real)
829 (inst fstd result-real))
830 (inst fxch value-real))))))
831 (let ((value-imag (complex-double-reg-imag-tn value))
832 (result-imag (complex-double-reg-imag-tn result)))
833 (inst fxch value-imag)
834 (inst fstd (make-ea :dword
837 :disp (- (* (- instance-slots-offset 2)
839 instance-pointer-lowtag)))
840 (unless (location= value-imag result-imag)
841 (inst fstd result-imag))
842 (inst fxch value-imag))))