1 ;;;; the VM definition of various primitive memory access VOPs for
4 ;;;; This software is part of the SBCL system. See the README file for
7 ;;;; This software is derived from the CMU CL system, which was
8 ;;;; written at Carnegie Mellon University and released into the
9 ;;;; public domain. The software is in the public domain and is
10 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
11 ;;;; files for more information.
15 ;;;; Data object ref/set stuff.
18 (:args (object :scs (descriptor-reg)))
19 (:info name offset lowtag)
21 (:results (result :scs (descriptor-reg any-reg)))
23 (loadw result object offset lowtag)))
25 (define-vop (set-slot)
26 (:args (object :scs (descriptor-reg))
27 (value :scs (descriptor-reg any-reg null zero)))
28 (:info name offset lowtag)
32 (storew value object offset lowtag)))
35 ;;;; Symbol hacking VOPs:
37 ;;; The compiler likes to be able to directly SET symbols.
39 (define-vop (set cell-set)
40 (:variant symbol-value-slot other-pointer-lowtag))
42 ;;; Do a cell ref with an error check for being unbound.
44 (define-vop (checked-cell-ref)
45 (:args (object :scs (descriptor-reg) :target obj-temp))
46 (:results (value :scs (descriptor-reg any-reg)))
49 (:save-p :compute-only)
50 (:temporary (:scs (non-descriptor-reg)) temp)
51 (:temporary (:scs (descriptor-reg) :from (:argument 0)) obj-temp))
53 ;;; With Symbol-Value, we check that the value isn't the trap object. So
54 ;;; Symbol-Value of NIL is NIL.
56 (define-vop (symbol-value checked-cell-ref)
57 (:translate symbol-value)
59 (move obj-temp object)
60 (loadw value obj-temp symbol-value-slot other-pointer-lowtag)
61 (let ((err-lab (generate-error-code vop unbound-symbol-error obj-temp)))
62 (inst xor temp value unbound-marker-widetag)
63 (inst beq temp zero-tn err-lab)
66 ;;; Like CHECKED-CELL-REF, only we are a predicate to see if the cell is bound.
67 (define-vop (boundp-frob)
68 (:args (object :scs (descriptor-reg)))
72 (:temporary (:scs (descriptor-reg)) value)
73 (:temporary (:scs (non-descriptor-reg)) temp))
75 (define-vop (boundp boundp-frob)
78 (loadw value object symbol-value-slot other-pointer-lowtag)
79 (inst xor temp value unbound-marker-widetag)
81 (inst beq temp zero-tn target)
82 (inst bne temp zero-tn target))
85 (define-vop (fast-symbol-value cell-ref)
86 (:variant symbol-value-slot other-pointer-lowtag)
88 (:translate symbol-value))
90 (define-vop (symbol-hash)
92 (:translate symbol-hash)
93 (:args (symbol :scs (descriptor-reg)))
94 (:results (res :scs (any-reg)))
95 (:result-types positive-fixnum)
96 (:temporary (:scs (any-reg)) temp)
98 ;; The symbol-hash slot of NIL holds NIL because it is also the
99 ;; cdr slot, so we have to strip off the two low bits to make sure
100 ;; it is a fixnum. The lowtag selection magic that is required to
101 ;; ensure this is explained in the comment in objdef.lisp
103 ;; wow, MIPS sucks (or I do) -- CSR, 2004-05-20
104 (inst li temp (fixnumize -1))
105 (loadw res symbol symbol-hash-slot other-pointer-lowtag)
106 (inst and res temp)))
108 ;;;; Fdefinition (fdefn) objects.
110 (define-vop (fdefn-fun cell-ref)
111 (:variant fdefn-fun-slot other-pointer-lowtag))
113 (define-vop (safe-fdefn-fun)
114 (:args (object :scs (descriptor-reg) :target obj-temp))
115 (:results (value :scs (descriptor-reg any-reg)))
117 (:save-p :compute-only)
118 (:temporary (:scs (descriptor-reg) :from (:argument 0)) obj-temp)
120 (move obj-temp object)
121 (loadw value obj-temp fdefn-fun-slot other-pointer-lowtag)
122 (let ((err-lab (generate-error-code vop undefined-fun-error obj-temp)))
123 (inst beq value null-tn err-lab))
126 (define-vop (set-fdefn-fun)
128 (:translate (setf fdefn-fun))
129 (:args (function :scs (descriptor-reg) :target result)
130 (fdefn :scs (descriptor-reg)))
131 (:temporary (:scs (interior-reg)) lip)
132 (:temporary (:scs (non-descriptor-reg)) type)
133 (:results (result :scs (descriptor-reg)))
135 (let ((normal-fn (gen-label)))
136 (load-type type function (- fun-pointer-lowtag))
138 (inst xor type simple-fun-header-widetag)
139 (inst beq type zero-tn normal-fn)
140 (inst addu lip function
141 (- (ash simple-fun-code-offset word-shift)
143 (inst li lip (make-fixup "closure_tramp" :foreign))
144 (emit-label normal-fn)
145 (storew lip fdefn fdefn-raw-addr-slot other-pointer-lowtag)
146 (storew function fdefn fdefn-fun-slot other-pointer-lowtag)
147 (move result function))))
149 (define-vop (fdefn-makunbound)
151 (:translate fdefn-makunbound)
152 (:args (fdefn :scs (descriptor-reg) :target result))
153 (:temporary (:scs (non-descriptor-reg)) temp)
154 (:results (result :scs (descriptor-reg)))
156 (storew null-tn fdefn fdefn-fun-slot other-pointer-lowtag)
157 (inst li temp (make-fixup "undefined_tramp" :foreign))
158 (storew temp fdefn fdefn-raw-addr-slot other-pointer-lowtag)
159 (move result fdefn)))
163 ;;;; Binding and Unbinding.
165 ;;; BIND -- Establish VAL as a binding for SYMBOL. Save the old value and
166 ;;; the symbol on the binding stack and stuff the new value into the
170 (:args (val :scs (any-reg descriptor-reg))
171 (symbol :scs (descriptor-reg)))
172 (:temporary (:scs (descriptor-reg)) temp)
174 (loadw temp symbol symbol-value-slot other-pointer-lowtag)
175 (inst addu bsp-tn bsp-tn (* 2 n-word-bytes))
176 (storew temp bsp-tn (- binding-value-slot binding-size))
177 (storew symbol bsp-tn (- binding-symbol-slot binding-size))
178 (storew val symbol symbol-value-slot other-pointer-lowtag)))
182 (:temporary (:scs (descriptor-reg)) symbol value)
184 (loadw symbol bsp-tn (- binding-symbol-slot binding-size))
185 (loadw value bsp-tn (- binding-value-slot binding-size))
186 (storew value symbol symbol-value-slot other-pointer-lowtag)
187 (storew zero-tn bsp-tn (- binding-value-slot binding-size))
188 (storew zero-tn bsp-tn (- binding-symbol-slot binding-size))
189 (inst addu bsp-tn bsp-tn (* -2 n-word-bytes))))
192 (define-vop (unbind-to-here)
193 (:args (arg :scs (descriptor-reg any-reg) :target where))
194 (:temporary (:scs (any-reg) :from (:argument 0)) where)
195 (:temporary (:scs (descriptor-reg)) symbol value)
197 (let ((loop (gen-label))
201 (inst beq where bsp-tn done)
205 (loadw symbol bsp-tn (- binding-symbol-slot binding-size))
206 (inst beq symbol zero-tn skip)
207 (loadw value bsp-tn (- binding-value-slot binding-size))
208 (storew value symbol symbol-value-slot other-pointer-lowtag)
209 (storew zero-tn bsp-tn (- binding-value-slot binding-size))
210 (storew zero-tn bsp-tn (- binding-symbol-slot binding-size))
213 (inst addu bsp-tn bsp-tn (* -2 n-word-bytes))
214 (inst bne where bsp-tn loop)
221 ;;;; Closure indexing.
223 (define-full-reffer closure-index-ref *
224 closure-info-offset fun-pointer-lowtag
225 (descriptor-reg any-reg) * %closure-index-ref)
227 (define-full-setter set-funcallable-instance-info *
228 funcallable-instance-info-offset fun-pointer-lowtag
229 (descriptor-reg any-reg null zero) * %set-funcallable-instance-info)
231 (define-full-reffer funcallable-instance-info *
232 funcallable-instance-info-offset fun-pointer-lowtag
233 (descriptor-reg any-reg) * %funcallable-instance-info)
235 (define-vop (funcallable-instance-lexenv cell-ref)
236 (:variant funcallable-instance-lexenv-slot fun-pointer-lowtag))
238 (define-vop (closure-ref slot-ref)
239 (:variant closure-info-offset fun-pointer-lowtag))
241 (define-vop (closure-init slot-set)
242 (:variant closure-info-offset fun-pointer-lowtag))
245 ;;;; Value Cell hackery.
247 (define-vop (value-cell-ref cell-ref)
248 (:variant value-cell-value-slot other-pointer-lowtag))
250 (define-vop (value-cell-set cell-set)
251 (:variant value-cell-value-slot other-pointer-lowtag))
255 ;;;; Instance hackery:
257 (define-vop (instance-length)
259 (:translate %instance-length)
260 (:args (struct :scs (descriptor-reg)))
261 (:results (res :scs (unsigned-reg)))
262 (:result-types positive-fixnum)
264 (loadw res struct 0 instance-pointer-lowtag)
265 (inst srl res n-widetag-bits)))
267 (define-vop (instance-ref slot-ref)
268 (:variant instance-slots-offset instance-pointer-lowtag)
270 (:translate %instance-ref)
271 (:arg-types instance (:constant index)))
274 (define-vop (instance-set slot-set)
276 (:translate %instance-set)
277 (:variant instance-slots-offset instance-pointer-lowtag)
278 (:arg-types instance (:constant index) *))
280 (define-full-reffer instance-index-ref * instance-slots-offset
281 instance-pointer-lowtag (descriptor-reg any-reg) * %instance-ref)
283 (define-full-setter instance-index-set * instance-slots-offset
284 instance-pointer-lowtag (descriptor-reg any-reg null zero) * %instance-set)
288 ;;;; Code object frobbing.
290 (define-full-reffer code-header-ref * 0 other-pointer-lowtag
291 (descriptor-reg any-reg) * code-header-ref)
293 (define-full-setter code-header-set * 0 other-pointer-lowtag
294 (descriptor-reg any-reg null zero) * code-header-set)
298 ;;;; raw instance slot accessors
300 (define-vop (raw-instance-ref/word)
301 (:translate %raw-instance-ref/word)
303 (:args (object :scs (descriptor-reg))
304 (index :scs (any-reg)))
305 (:arg-types * positive-fixnum)
306 (:results (value :scs (unsigned-reg)))
307 (:temporary (:scs (non-descriptor-reg)) offset)
308 (:temporary (:scs (interior-reg)) lip)
309 (:result-types unsigned-num)
311 (loadw offset object 0 instance-pointer-lowtag)
312 (inst srl offset n-widetag-bits)
314 (inst subu offset index)
315 (inst subu offset n-word-bytes)
316 (inst addu lip offset object)
317 (inst lw value lip (- (* instance-slots-offset n-word-bytes)
318 instance-pointer-lowtag))))
320 (define-vop (raw-instance-set/word)
321 (:translate %raw-instance-set/word)
323 (:args (object :scs (descriptor-reg))
324 (index :scs (any-reg))
325 (value :scs (unsigned-reg) :target result))
326 (:arg-types * positive-fixnum unsigned-num)
327 (:results (result :scs (unsigned-reg)))
328 (:temporary (:scs (non-descriptor-reg)) offset)
329 (:temporary (:scs (interior-reg)) lip)
330 (:result-types unsigned-num)
332 (loadw offset object 0 instance-pointer-lowtag)
333 (inst srl offset n-widetag-bits)
335 (inst subu offset index)
336 (inst subu offset n-word-bytes)
337 (inst addu lip offset object)
338 (inst sw value lip (- (* instance-slots-offset n-word-bytes)
339 instance-pointer-lowtag))
340 (move result value)))
342 (define-vop (raw-instance-ref/single)
343 (:translate %raw-instance-ref/single)
345 (:args (object :scs (descriptor-reg))
346 (index :scs (any-reg)))
347 (:arg-types * positive-fixnum)
348 (:results (value :scs (single-reg)))
349 (:temporary (:scs (non-descriptor-reg)) offset)
350 (:temporary (:scs (interior-reg)) lip)
351 (:result-types single-float)
353 (loadw offset object 0 instance-pointer-lowtag)
354 (inst srl offset n-widetag-bits)
356 (inst subu offset index)
357 (inst subu offset n-word-bytes)
358 (inst addu lip offset object)
359 (inst lwc1 value lip (- (* instance-slots-offset n-word-bytes)
360 instance-pointer-lowtag))))
362 (define-vop (raw-instance-set/single)
363 (:translate %raw-instance-set/single)
365 (:args (object :scs (descriptor-reg))
366 (index :scs (any-reg))
367 (value :scs (single-reg) :target result))
368 (:arg-types * positive-fixnum single-float)
369 (:results (result :scs (single-reg)))
370 (:temporary (:scs (non-descriptor-reg)) offset)
371 (:temporary (:scs (interior-reg)) lip)
372 (:result-types single-float)
374 (loadw offset object 0 instance-pointer-lowtag)
375 (inst srl offset n-widetag-bits)
377 (inst subu offset index)
378 (inst subu offset n-word-bytes)
379 (inst addu lip offset object)
380 (inst swc1 value lip (- (* instance-slots-offset n-word-bytes)
381 instance-pointer-lowtag))
382 (unless (location= result value)
383 (inst fmove :single result value))))
385 (define-vop (raw-instance-ref/double)
386 (:translate %raw-instance-ref/double)
388 (:args (object :scs (descriptor-reg))
389 (index :scs (any-reg)))
390 (:arg-types * positive-fixnum)
391 (:results (value :scs (double-reg)))
392 (:temporary (:scs (non-descriptor-reg)) offset)
393 (:temporary (:scs (interior-reg)) lip)
394 (:result-types double-float)
396 (loadw offset object 0 instance-pointer-lowtag)
397 (inst srl offset n-widetag-bits)
399 (inst subu offset index)
400 (inst subu offset (* 2 n-word-bytes))
401 (inst addu lip offset object)
402 (let ((immediate-offset (- (* instance-slots-offset n-word-bytes)
403 instance-pointer-lowtag)))
404 (ecase *backend-byte-order*
405 (:big-endian (inst lwc1 value lip immediate-offset))
406 (:little-endian (inst lwc1-odd value lip immediate-offset))))
407 (let ((immediate-offset (- (* (1+ instance-slots-offset) n-word-bytes)
408 instance-pointer-lowtag)))
409 (ecase *backend-byte-order*
410 (:big-endian (inst lwc1-odd value lip immediate-offset))
411 (:little-endian (inst lwc1 value lip immediate-offset))))))
413 (define-vop (raw-instance-set/double)
414 (:translate %raw-instance-set/double)
416 (:args (object :scs (descriptor-reg))
417 (index :scs (any-reg))
418 (value :scs (double-reg) :target result))
419 (:arg-types * positive-fixnum double-float)
420 (:results (result :scs (double-reg)))
421 (:temporary (:scs (non-descriptor-reg)) offset)
422 (:temporary (:scs (interior-reg)) lip)
423 (:result-types double-float)
425 (loadw offset object 0 instance-pointer-lowtag)
426 (inst srl offset n-widetag-bits)
428 (inst subu offset index)
429 (inst subu offset (* 2 n-word-bytes))
430 (inst addu lip offset object)
431 (let ((immediate-offset (- (* instance-slots-offset n-word-bytes)
432 instance-pointer-lowtag)))
433 (ecase *backend-byte-order*
434 (:big-endian (inst swc1 value lip immediate-offset))
435 (:little-endian (inst swc1-odd value lip immediate-offset))))
436 (let ((immediate-offset (- (* (1+ instance-slots-offset) n-word-bytes)
437 instance-pointer-lowtag)))
438 (ecase *backend-byte-order*
439 (:big-endian (inst swc1-odd value lip immediate-offset))
440 (:little-endian (inst swc1 value lip immediate-offset))))
441 (unless (location= result value)
442 (inst fmove :double result value))))
444 (define-vop (raw-instance-ref/complex-single)
445 (:translate %raw-instance-ref/complex-single)
447 (:args (object :scs (descriptor-reg))
448 (index :scs (any-reg)))
449 (:arg-types * positive-fixnum)
450 (:results (value :scs (complex-single-reg)))
451 (:temporary (:scs (non-descriptor-reg)) offset)
452 (:temporary (:scs (interior-reg)) lip)
453 (:result-types complex-single-float)
455 (loadw offset object 0 instance-pointer-lowtag)
456 (inst srl offset n-widetag-bits)
458 (inst subu offset index)
459 (inst subu offset (* 2 n-word-bytes))
460 (inst addu lip offset object)
462 (complex-single-reg-real-tn value)
464 (- (* instance-slots-offset n-word-bytes)
465 instance-pointer-lowtag))
467 (complex-single-reg-imag-tn value)
469 (- (* (1+ instance-slots-offset) n-word-bytes)
470 instance-pointer-lowtag))))
472 (define-vop (raw-instance-set/complex-single)
473 (:translate %raw-instance-set/complex-single)
475 (:args (object :scs (descriptor-reg))
476 (index :scs (any-reg))
477 (value :scs (complex-single-reg) :target result))
478 (:arg-types * positive-fixnum complex-single-float)
479 (:results (result :scs (complex-single-reg)))
480 (:temporary (:scs (non-descriptor-reg)) offset)
481 (:temporary (:scs (interior-reg)) lip)
482 (:result-types complex-single-float)
484 (loadw offset object 0 instance-pointer-lowtag)
485 (inst srl offset n-widetag-bits)
487 (inst subu offset index)
488 (inst subu offset (* 2 n-word-bytes))
489 (inst addu lip offset object)
490 (let ((value-real (complex-single-reg-real-tn value))
491 (result-real (complex-single-reg-real-tn result)))
495 (- (* instance-slots-offset n-word-bytes)
496 instance-pointer-lowtag))
497 (unless (location= result-real value-real)
498 (inst fmove :single result-real value-real)))
499 (let ((value-imag (complex-single-reg-imag-tn value))
500 (result-imag (complex-single-reg-imag-tn result)))
504 (- (* (1+ instance-slots-offset) n-word-bytes)
505 instance-pointer-lowtag))
506 (unless (location= result-imag value-imag)
507 (inst fmove :single result-imag value-imag)))))
509 (define-vop (raw-instance-ref/complex-double)
510 (:translate %raw-instance-ref/complex-double)
512 (:args (object :scs (descriptor-reg))
513 (index :scs (any-reg)))
514 (:arg-types * positive-fixnum)
515 (:results (value :scs (complex-double-reg)))
516 (:temporary (:scs (non-descriptor-reg)) offset)
517 (:temporary (:scs (interior-reg)) lip)
518 (:result-types complex-double-float)
520 (loadw offset object 0 instance-pointer-lowtag)
521 (inst srl offset n-widetag-bits)
523 (inst subu offset index)
524 (inst subu offset (* 4 n-word-bytes))
525 (inst addu lip offset object)
526 (let ((immediate-offset (- (* instance-slots-offset n-word-bytes)
527 instance-pointer-lowtag)))
528 (ecase *backend-byte-order*
529 (:big-endian (inst lwc1
530 (complex-double-reg-real-tn value)
533 (:little-endian (inst lwc1-odd
534 (complex-double-reg-real-tn value)
537 (let ((immediate-offset (- (* (1+ instance-slots-offset) n-word-bytes)
538 instance-pointer-lowtag)))
539 (ecase *backend-byte-order*
540 (:big-endian (inst lwc1-odd
541 (complex-double-reg-real-tn value)
544 (:little-endian (inst lwc1
545 (complex-double-reg-real-tn value)
548 (let ((immediate-offset (- (* (+ instance-slots-offset 2) n-word-bytes)
549 instance-pointer-lowtag)))
550 (ecase *backend-byte-order*
551 (:big-endian (inst lwc1
552 (complex-double-reg-imag-tn value)
555 (:little-endian (inst lwc1-odd
556 (complex-double-reg-imag-tn value)
559 (let ((immediate-offset (- (* (+ instance-slots-offset 3) n-word-bytes)
560 instance-pointer-lowtag)))
561 (ecase *backend-byte-order*
562 (:big-endian (inst lwc1-odd
563 (complex-double-reg-imag-tn value)
566 (:little-endian (inst lwc1
567 (complex-double-reg-imag-tn value)
569 immediate-offset))))))
571 (define-vop (raw-instance-set/complex-double)
572 (:translate %raw-instance-set/complex-double)
574 (:args (object :scs (descriptor-reg))
575 (index :scs (any-reg))
576 (value :scs (complex-double-reg) :target result))
577 (:arg-types * positive-fixnum complex-double-float)
578 (:results (result :scs (complex-double-reg)))
579 (:temporary (:scs (non-descriptor-reg)) offset)
580 (:temporary (:scs (interior-reg)) lip)
581 (:result-types complex-double-float)
583 (loadw offset object 0 instance-pointer-lowtag)
584 (inst srl offset n-widetag-bits)
586 (inst subu offset index)
587 (inst subu offset (* 4 n-word-bytes))
588 (inst addu lip offset object)
589 (let ((value-real (complex-double-reg-real-tn value))
590 (result-real (complex-double-reg-real-tn result)))
591 (let ((immediate-offset (- (* instance-slots-offset n-word-bytes)
592 instance-pointer-lowtag)))
593 (ecase *backend-byte-order*
594 (:big-endian (inst swc1
598 (:little-endian (inst swc1-odd
602 (let ((immediate-offset (- (* (1+ instance-slots-offset) n-word-bytes)
603 instance-pointer-lowtag)))
604 (ecase *backend-byte-order*
605 (:big-endian (inst swc1-odd
609 (:little-endian (inst swc1
613 (unless (location= result-real value-real)
614 (inst fmove :double result-real value-real)))
615 (let ((value-imag (complex-double-reg-imag-tn value))
616 (result-imag (complex-double-reg-imag-tn result)))
617 (let ((immediate-offset (- (* (+ instance-slots-offset 2) n-word-bytes)
618 instance-pointer-lowtag)))
619 (ecase *backend-byte-order*
620 (:big-endian (inst swc1
624 (:little-endian (inst swc1-odd
628 (let ((immediate-offset (- (* (+ instance-slots-offset 3) n-word-bytes)
629 instance-pointer-lowtag)))
630 (ecase *backend-byte-order*
631 (:big-endian (inst swc1-odd
635 (:little-endian (inst swc1
639 (unless (location= result-imag value-imag)
640 (inst fmove :double result-imag value-imag)))))