src/compiler/x86/cell.lisp

   1 ;;;; various primitive memory access VOPs for the x86 VM
   2
   3 ;;;; This software is part of the SBCL system. See the README file for
   4 ;;;; more information.
   5 ;;;;
   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.
  11
  12 (in-package "SB!VM")
  13 \f
  14 ;;;; data object ref/set stuff
  15
  16 (define-vop (slot)
  17   (:args (object :scs (descriptor-reg)))
  18   (:info name offset lowtag)
  19   (:ignore name)
  20   (:results (result :scs (descriptor-reg any-reg)))
  21   (:generator 1
  22     (loadw result object offset lowtag)))
  23
  24 (define-vop (set-slot)
  25   (:args (object :scs (descriptor-reg))
  26          (value :scs (descriptor-reg any-reg immediate)))
  27   (:info name offset lowtag)
  28   (:ignore name)
  29   (:results)
  30   (:generator 1
  31      (storew (encode-value-if-immediate value) object offset lowtag)))
  32
  33 (define-vop (compare-and-swap-slot)
  34   (:args (object :scs (descriptor-reg) :to :eval)
  35          (old :scs (descriptor-reg any-reg) :target eax)
  36          (new :scs (descriptor-reg any-reg)))
  37   (:temporary (:sc descriptor-reg :offset eax-offset
  38                    :from (:argument 1) :to :result :target result)
  39               eax)
  40   (:info name offset lowtag)
  41   (:ignore name)
  42   (:results (result :scs (descriptor-reg any-reg)))
  43   (:generator 5
  44      (move eax old)
  45      #!+sb-thread
  46      (inst lock)
  47      (inst cmpxchg (make-ea :dword :base object
  48                             :disp (- (* offset n-word-bytes) lowtag))
  49            new)
  50      (move result eax)))
  51 \f
  52 ;;;; symbol hacking VOPs
  53
  54 (define-vop (%compare-and-swap-symbol-value)
  55   (:translate %compare-and-swap-symbol-value)
  56   (:args (symbol :scs (descriptor-reg) :to (:result 1))
  57          (old :scs (descriptor-reg any-reg) :target eax)
  58          (new :scs (descriptor-reg any-reg)))
  59   (:temporary (:sc descriptor-reg :offset eax-offset) eax)
  60   #!+sb-thread
  61   (:temporary (:sc descriptor-reg) tls)
  62   (:results (result :scs (descriptor-reg any-reg)))
  63   (:policy :fast-safe)
  64   (:vop-var vop)
  65   (:generator 15
  66     ;; This code has to pathological cases: NO-TLS-VALUE-MARKER
  67     ;; or UNBOUND-MARKER as NEW: in either case we would end up
  68     ;; doing possible damage with CMPXCHG -- so don't do that!
  69     (let ((unbound (generate-error-code vop 'unbound-symbol-error symbol))
  70           (check (gen-label)))
  71       (move eax old)
  72       #!+sb-thread
  73       (progn
  74         (loadw tls symbol symbol-tls-index-slot other-pointer-lowtag)
  75         ;; Thread-local area, no LOCK needed.
  76         (inst fs-segment-prefix)
  77         (inst cmpxchg (make-ea :dword :base tls) new)
  78         (inst cmp eax no-tls-value-marker-widetag)
  79         (inst jmp :ne check)
  80         (move eax old)
  81         (inst lock))
  82       (inst cmpxchg (make-ea :dword :base symbol
  83                              :disp (- (* symbol-value-slot n-word-bytes)
  84                                       other-pointer-lowtag))
  85             new)
  86       (emit-label check)
  87       (move result eax)
  88       (inst cmp result unbound-marker-widetag)
  89       (inst jmp :e unbound))))
  90
  91 ;;; these next two cf the sparc version, by jrd.
  92 ;;; FIXME: Deref this ^ reference.
  93
  94
  95 ;;; The compiler likes to be able to directly SET symbols.
  96 #!+sb-thread
  97 (define-vop (set)
  98   (:args (symbol :scs (descriptor-reg))
  99          (value :scs (descriptor-reg any-reg)))
 100   (:temporary (:sc descriptor-reg) tls)
 101   ;;(:policy :fast-safe)
 102   (:generator 4
 103     (let ((global-val (gen-label))
 104           (done (gen-label)))
 105       (loadw tls symbol symbol-tls-index-slot other-pointer-lowtag)
 106       (inst fs-segment-prefix)
 107       (inst cmp (make-ea :dword :base tls) no-tls-value-marker-widetag)
 108       (inst jmp :z global-val)
 109       (inst fs-segment-prefix)
 110       (inst mov (make-ea :dword :base tls) value)
 111       (inst jmp done)
 112       (emit-label global-val)
 113       (storew value symbol symbol-value-slot other-pointer-lowtag)
 114       (emit-label done))))
 115
 116 ;; unithreaded it's a lot simpler ...
 117 #!-sb-thread
 118 (define-vop (set cell-set)
 119   (:variant symbol-value-slot other-pointer-lowtag))
 120
 121 ;;; With Symbol-Value, we check that the value isn't the trap object. So
 122 ;;; Symbol-Value of NIL is NIL.
 123 #!+sb-thread
 124 (define-vop (symbol-value)
 125   (:translate symbol-value)
 126   (:policy :fast-safe)
 127   (:args (object :scs (descriptor-reg) :to (:result 1)))
 128   (:results (value :scs (descriptor-reg any-reg)))
 129   (:vop-var vop)
 130   (:save-p :compute-only)
 131   (:generator 9
 132     (let* ((check-unbound-label (gen-label))
 133            (err-lab (generate-error-code vop 'unbound-symbol-error object))
 134            (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 check-unbound-label)
 140       (loadw value object symbol-value-slot other-pointer-lowtag)
 141       (emit-label check-unbound-label)
 142       (inst cmp value unbound-marker-widetag)
 143       (inst jmp :e err-lab)
 144       (emit-label ret-lab))))
 145
 146 #!+sb-thread
 147 (define-vop (fast-symbol-value symbol-value)
 148   ;; KLUDGE: not really fast, in fact, because we're going to have to
 149   ;; do a full lookup of the thread-local area anyway.  But half of
 150   ;; the meaning of FAST-SYMBOL-VALUE is "do not signal an error if
 151   ;; unbound", which is used in the implementation of COPY-SYMBOL.  --
 152   ;; CSR, 2003-04-22
 153   (:policy :fast)
 154   (:translate symbol-value)
 155   (:generator 8
 156     (let ((ret-lab (gen-label)))
 157       (loadw value object symbol-tls-index-slot other-pointer-lowtag)
 158       (inst fs-segment-prefix)
 159       (inst mov value (make-ea :dword :base value))
 160       (inst cmp value no-tls-value-marker-widetag)
 161       (inst jmp :ne ret-lab)
 162       (loadw value object symbol-value-slot other-pointer-lowtag)
 163       (emit-label ret-lab))))
 164
 165 #!-sb-thread
 166 (define-vop (symbol-value)
 167   (:translate symbol-value)
 168   (:policy :fast-safe)
 169   (:args (object :scs (descriptor-reg) :to (:result 1)))
 170   (:results (value :scs (descriptor-reg any-reg)))
 171   (:vop-var vop)
 172   (:save-p :compute-only)
 173   (:generator 9
 174     (let ((err-lab (generate-error-code vop 'unbound-symbol-error object)))
 175       (loadw value object symbol-value-slot other-pointer-lowtag)
 176       (inst cmp value unbound-marker-widetag)
 177       (inst jmp :e err-lab))))
 178
 179 #!-sb-thread
 180 (define-vop (fast-symbol-value cell-ref)
 181   (:variant symbol-value-slot other-pointer-lowtag)
 182   (:policy :fast)
 183   (:translate symbol-value))
 184
 185 (defknown locked-symbol-global-value-add (symbol fixnum) fixnum ())
 186
 187 (define-vop (locked-symbol-global-value-add)
 188     (:args (object :scs (descriptor-reg) :to :result)
 189            (value :scs (any-reg) :target result))
 190   (:arg-types * tagged-num)
 191   (:results (result :scs (any-reg) :from (:argument 1)))
 192   (:policy :fast)
 193   (:translate locked-symbol-global-value-add)
 194   (:result-types tagged-num)
 195   (:policy :fast-safe)
 196   (:generator 4
 197     (move result value)
 198     (inst lock)
 199     (inst add (make-ea-for-object-slot object symbol-value-slot
 200                                        other-pointer-lowtag)
 201           value)))
 202
 203 #!+sb-thread
 204 (define-vop (boundp)
 205   (:translate boundp)
 206   (:policy :fast-safe)
 207   (:args (object :scs (descriptor-reg)))
 208   (:conditional)
 209   (:info target not-p)
 210   (:temporary (:sc descriptor-reg #+nil(:from (:argument 0))) value)
 211   (:generator 9
 212     (let ((check-unbound-label (gen-label)))
 213       (loadw value object symbol-tls-index-slot other-pointer-lowtag)
 214       (inst fs-segment-prefix)
 215       (inst mov value (make-ea :dword :base value))
 216       (inst cmp value no-tls-value-marker-widetag)
 217       (inst jmp :ne check-unbound-label)
 218       (loadw value object symbol-value-slot other-pointer-lowtag)
 219       (emit-label check-unbound-label)
 220       (inst cmp value unbound-marker-widetag)
 221       (inst jmp (if not-p :e :ne) target))))
 222
 223 #!-sb-thread
 224 (define-vop (boundp)
 225   (:translate boundp)
 226   (:policy :fast-safe)
 227   (:args (object :scs (descriptor-reg)))
 228   (:conditional)
 229   (:info target not-p)
 230   (:generator 9
 231     (inst cmp (make-ea-for-object-slot object symbol-value-slot
 232                                        other-pointer-lowtag)
 233           unbound-marker-widetag)
 234     (inst jmp (if not-p :e :ne) target)))
 235
 236
 237 (define-vop (symbol-hash)
 238   (:policy :fast-safe)
 239   (:translate symbol-hash)
 240   (:args (symbol :scs (descriptor-reg)))
 241   (:results (res :scs (any-reg)))
 242   (:result-types positive-fixnum)
 243   (:generator 2
 244     ;; The symbol-hash slot of NIL holds NIL because it is also the
 245     ;; cdr slot, so we have to strip off the two low bits to make sure
 246     ;; it is a fixnum.  The lowtag selection magic that is required to
 247     ;; ensure this is explained in the comment in objdef.lisp
 248     (loadw res symbol symbol-hash-slot other-pointer-lowtag)
 249     (inst and res (lognot #b11))))
 250 \f
 251 ;;;; fdefinition (FDEFN) objects
 252
 253 (define-vop (fdefn-fun cell-ref)        ; /pfw - alpha
 254   (:variant fdefn-fun-slot other-pointer-lowtag))
 255
 256 (define-vop (safe-fdefn-fun)
 257   (:args (object :scs (descriptor-reg) :to (:result 1)))
 258   (:results (value :scs (descriptor-reg any-reg)))
 259   (:vop-var vop)
 260   (:save-p :compute-only)
 261   (:generator 10
 262     (loadw value object fdefn-fun-slot other-pointer-lowtag)
 263     (inst cmp value nil-value)
 264     (let ((err-lab (generate-error-code vop 'undefined-fun-error object)))
 265       (inst jmp :e err-lab))))
 266
 267 (define-vop (set-fdefn-fun)
 268   (:policy :fast-safe)
 269   (:translate (setf fdefn-fun))
 270   (:args (function :scs (descriptor-reg) :target result)
 271          (fdefn :scs (descriptor-reg)))
 272   (:temporary (:sc unsigned-reg) raw)
 273   (:temporary (:sc byte-reg) type)
 274   (:results (result :scs (descriptor-reg)))
 275   (:generator 38
 276     (load-type type function (- fun-pointer-lowtag))
 277     (inst lea raw
 278           (make-ea-for-object-slot function simple-fun-code-offset
 279                                    fun-pointer-lowtag))
 280     (inst cmp type simple-fun-header-widetag)
 281     (inst jmp :e normal-fn)
 282     (inst lea raw (make-fixup "closure_tramp" :foreign))
 283     NORMAL-FN
 284     (storew function fdefn fdefn-fun-slot other-pointer-lowtag)
 285     (storew raw fdefn fdefn-raw-addr-slot other-pointer-lowtag)
 286     (move result function)))
 287
 288 (define-vop (fdefn-makunbound)
 289   (:policy :fast-safe)
 290   (:translate fdefn-makunbound)
 291   (:args (fdefn :scs (descriptor-reg) :target result))
 292   (:results (result :scs (descriptor-reg)))
 293   (:generator 38
 294     (storew nil-value fdefn fdefn-fun-slot other-pointer-lowtag)
 295     (storew (make-fixup "undefined_tramp" :foreign)
 296             fdefn fdefn-raw-addr-slot other-pointer-lowtag)
 297     (move result fdefn)))
 298 \f
 299 ;;;; binding and unbinding
 300
 301 ;;; BIND -- Establish VAL as a binding for SYMBOL. Save the old value and
 302 ;;; the symbol on the binding stack and stuff the new value into the
 303 ;;; symbol.
 304
 305 ;;; FIXME: Split into DYNBIND and BIND: DYNBIND needs to ensure
 306 ;;; TLS-INDEX, whereas BIND should assume it is already in place. Make
 307 ;;; LET &co compile into BIND, and PROGV into DYNBIND, plus ensure
 308 ;;; TLS-INDEX at compile-time, and make loader and dumper preserve
 309 ;;; the existence of a TLS-INDEX.
 310 #!+sb-thread
 311 (define-vop (bind)
 312   (:args (val :scs (any-reg descriptor-reg))
 313          (symbol :scs (descriptor-reg)))
 314   (:temporary (:sc unsigned-reg) tls-index bsp)
 315   (:generator 10
 316     (let ((tls-index-valid (gen-label)))
 317       (load-binding-stack-pointer bsp)
 318       (loadw tls-index symbol symbol-tls-index-slot other-pointer-lowtag)
 319       (inst add bsp (* binding-size n-word-bytes))
 320       (store-binding-stack-pointer bsp)
 321       (inst or tls-index tls-index)
 322       (inst jmp :ne tls-index-valid)
 323       (inst mov tls-index symbol)
 324       (inst call (make-fixup
 325                   (ecase (tn-offset tls-index)
 326                     (#.eax-offset 'alloc-tls-index-in-eax)
 327                     (#.ebx-offset 'alloc-tls-index-in-ebx)
 328                     (#.ecx-offset 'alloc-tls-index-in-ecx)
 329                     (#.edx-offset 'alloc-tls-index-in-edx)
 330                     (#.edi-offset 'alloc-tls-index-in-edi)
 331                     (#.esi-offset 'alloc-tls-index-in-esi))
 332                   :assembly-routine))
 333       (emit-label tls-index-valid)
 334       (inst fs-segment-prefix)
 335       (inst push (make-ea :dword :base tls-index))
 336       (popw bsp (- binding-value-slot binding-size))
 337       (storew symbol bsp (- binding-symbol-slot binding-size))
 338       (inst fs-segment-prefix)
 339       (inst mov (make-ea :dword :base tls-index) val))))
 340
 341 #!-sb-thread
 342 (define-vop (bind)
 343   (:args (val :scs (any-reg descriptor-reg))
 344          (symbol :scs (descriptor-reg)))
 345   (:temporary (:sc unsigned-reg) temp bsp)
 346   (:generator 5
 347     (load-symbol-value bsp *binding-stack-pointer*)
 348     (loadw temp symbol symbol-value-slot other-pointer-lowtag)
 349     (inst add bsp (* binding-size n-word-bytes))
 350     (store-symbol-value bsp *binding-stack-pointer*)
 351     (storew temp bsp (- binding-value-slot binding-size))
 352     (storew symbol bsp (- binding-symbol-slot binding-size))
 353     (storew val symbol symbol-value-slot other-pointer-lowtag)))
 354
 355 #!+sb-thread
 356 (define-vop (unbind)
 357   (:temporary (:sc unsigned-reg) temp bsp tls-index)
 358   (:generator 0
 359     (load-binding-stack-pointer bsp)
 360     ;; Load SYMBOL from stack, and get the TLS-INDEX.
 361     (loadw temp bsp (- binding-symbol-slot binding-size))
 362     (loadw tls-index temp symbol-tls-index-slot other-pointer-lowtag)
 363     ;; Load VALUE from stack, then restore it to the TLS area.
 364     (loadw temp bsp (- binding-value-slot binding-size))
 365     (inst fs-segment-prefix)
 366     (inst mov (make-ea :dword :base tls-index) temp)
 367     ;; Zero out the stack.
 368     (storew 0 bsp (- binding-symbol-slot binding-size))
 369     (storew 0 bsp (- binding-value-slot binding-size))
 370     (inst sub bsp (* binding-size n-word-bytes))
 371     (store-binding-stack-pointer bsp)))
 372
 373 #!-sb-thread
 374 (define-vop (unbind)
 375   (:temporary (:sc unsigned-reg) symbol value bsp)
 376   (:generator 0
 377     (load-symbol-value bsp *binding-stack-pointer*)
 378     (loadw symbol bsp (- binding-symbol-slot binding-size))
 379     (loadw value bsp (- binding-value-slot binding-size))
 380     (storew value symbol symbol-value-slot other-pointer-lowtag)
 381     (storew 0 bsp (- binding-symbol-slot binding-size))
 382     (storew 0 bsp (- binding-value-slot binding-size))
 383     (inst sub bsp (* binding-size n-word-bytes))
 384     (store-symbol-value bsp *binding-stack-pointer*)))
 385
 386
 387 (define-vop (unbind-to-here)
 388   (:args (where :scs (descriptor-reg any-reg)))
 389   (:temporary (:sc unsigned-reg) symbol value bsp #!+sb-thread tls-index)
 390   (:generator 0
 391     (load-binding-stack-pointer bsp)
 392     (inst cmp where bsp)
 393     (inst jmp :e done)
 394
 395     LOOP
 396     (loadw symbol bsp (- binding-symbol-slot binding-size))
 397     (inst or symbol symbol)
 398     (inst jmp :z skip)
 399     ;; Bind stack debug sentinels have the unbound marker in the symbol slot
 400     (inst cmp symbol unbound-marker-widetag)
 401     (inst jmp :eq skip)
 402     (loadw value bsp (- binding-value-slot binding-size))
 403     #!-sb-thread (storew value symbol symbol-value-slot other-pointer-lowtag)
 404
 405     #!+sb-thread (loadw
 406                   tls-index symbol symbol-tls-index-slot other-pointer-lowtag)
 407     #!+sb-thread (inst fs-segment-prefix)
 408     #!+sb-thread (inst mov (make-ea :dword :base tls-index) value)
 409     (storew 0 bsp (- binding-symbol-slot binding-size))
 410
 411     SKIP
 412     (storew 0 bsp (- binding-value-slot binding-size))
 413     (inst sub bsp (* binding-size n-word-bytes))
 414     (inst cmp where bsp)
 415     (inst jmp :ne loop)
 416     (store-binding-stack-pointer bsp)
 417
 418     DONE))
 419
 420 (define-vop (bind-sentinel)
 421   (:temporary (:sc unsigned-reg) bsp)
 422   (:generator 1
 423      (load-binding-stack-pointer bsp)
 424      (inst add bsp (* binding-size n-word-bytes))
 425      (storew unbound-marker-widetag bsp (- binding-symbol-slot binding-size))
 426      (storew ebp-tn bsp (- binding-value-slot binding-size))
 427      (store-binding-stack-pointer bsp)))
 428
 429 (define-vop (unbind-sentinel)
 430   (:temporary (:sc unsigned-reg) bsp)
 431   (:generator 1
 432      (load-binding-stack-pointer bsp)
 433      (storew 0 bsp (- binding-value-slot binding-size))
 434      (storew 0 bsp (- binding-symbol-slot binding-size))
 435      (inst sub bsp (* binding-size n-word-bytes))
 436      (store-binding-stack-pointer bsp)))
 437 \f
 438
 439 \f
 440 ;;;; closure indexing
 441
 442 (define-full-reffer closure-index-ref *
 443   closure-info-offset fun-pointer-lowtag
 444   (any-reg descriptor-reg) * %closure-index-ref)
 445
 446 (define-full-setter set-funcallable-instance-info *
 447   funcallable-instance-info-offset fun-pointer-lowtag
 448   (any-reg descriptor-reg) * %set-funcallable-instance-info)
 449
 450 (define-full-reffer funcallable-instance-info *
 451   funcallable-instance-info-offset fun-pointer-lowtag
 452   (descriptor-reg any-reg) * %funcallable-instance-info)
 453
 454 (define-vop (closure-ref slot-ref)
 455   (:variant closure-info-offset fun-pointer-lowtag))
 456
 457 (define-vop (closure-init slot-set)
 458   (:variant closure-info-offset fun-pointer-lowtag))
 459 \f
 460 ;;;; value cell hackery
 461
 462 (define-vop (value-cell-ref cell-ref)
 463   (:variant value-cell-value-slot other-pointer-lowtag))
 464
 465 (define-vop (value-cell-set cell-set)
 466   (:variant value-cell-value-slot other-pointer-lowtag))
 467 \f
 468 ;;;; structure hackery
 469
 470 (define-vop (instance-length)
 471   (:policy :fast-safe)
 472   (:translate %instance-length)
 473   (:args (struct :scs (descriptor-reg)))
 474   (:results (res :scs (unsigned-reg)))
 475   (:result-types positive-fixnum)
 476   (:generator 4
 477     (loadw res struct 0 instance-pointer-lowtag)
 478     (inst shr res n-widetag-bits)))
 479
 480 (define-full-reffer instance-index-ref *
 481   instance-slots-offset instance-pointer-lowtag
 482   (any-reg descriptor-reg) *
 483   %instance-ref)
 484
 485 (define-full-setter instance-index-set *
 486   instance-slots-offset instance-pointer-lowtag
 487   (any-reg descriptor-reg) *
 488   %instance-set)
 489
 490 (define-full-compare-and-swap %compare-and-swap-instance-ref instance
 491   instance-slots-offset instance-pointer-lowtag
 492   (any-reg descriptor-reg) *
 493   %compare-and-swap-instance-ref)
 494 \f
 495 ;;;; code object frobbing
 496
 497 (define-full-reffer code-header-ref * 0 other-pointer-lowtag
 498   (any-reg descriptor-reg) * code-header-ref)
 499
 500 (define-full-setter code-header-set * 0 other-pointer-lowtag
 501   (any-reg descriptor-reg) * code-header-set)
 502 \f
 503 ;;;; raw instance slot accessors
 504
 505 (defun make-ea-for-raw-slot (object index instance-length n-words)
 506   (flet ((make-ea-using-value (value)
 507            (make-ea :dword :base object
 508                     :index instance-length
 509                     :scale 4
 510                     :disp (- (* (- instance-slots-offset n-words)
 511                                 n-word-bytes)
 512                              instance-pointer-lowtag
 513                              (fixnumize value)))))
 514     (if (typep index 'tn)
 515         (sc-case index
 516           (any-reg (make-ea :dword
 517                             :base object
 518                             :index instance-length
 519                             :disp (- (* (- instance-slots-offset n-words)
 520                                         n-word-bytes)
 521                                      instance-pointer-lowtag)))
 522           (immediate (make-ea-using-value (tn-value index))))
 523         (make-ea-using-value index))))
 524
 525 (define-vop (raw-instance-ref/word)
 526   (:translate %raw-instance-ref/word)
 527   (:policy :fast-safe)
 528   (:args (object :scs (descriptor-reg)) (index :scs (any-reg immediate)))
 529   (:arg-types * tagged-num)
 530   (:temporary (:sc unsigned-reg) tmp)
 531   (:results (value :scs (unsigned-reg)))
 532   (:result-types unsigned-num)
 533   (:generator 5
 534     (loadw tmp object 0 instance-pointer-lowtag)
 535     (inst shr tmp n-widetag-bits)
 536     (when (sc-is index any-reg)
 537       (inst shl tmp 2)
 538       (inst sub tmp index))
 539     (inst mov value (make-ea-for-raw-slot object index tmp 1))))
 540
 541 (define-vop (raw-instance-set/word)
 542   (:translate %raw-instance-set/word)
 543   (:policy :fast-safe)
 544   (:args (object :scs (descriptor-reg))
 545          (index :scs (any-reg immediate))
 546          (value :scs (unsigned-reg) :target result))
 547   (:arg-types * tagged-num unsigned-num)
 548   (:temporary (:sc unsigned-reg) tmp)
 549   (:results (result :scs (unsigned-reg)))
 550   (:result-types unsigned-num)
 551   (:generator 5
 552     (loadw tmp object 0 instance-pointer-lowtag)
 553     (inst shr tmp n-widetag-bits)
 554     (when (sc-is index any-reg)
 555       (inst shl tmp 2)
 556       (inst sub tmp index))
 557     (inst mov (make-ea-for-raw-slot object index tmp 1) value)
 558     (move result value)))
 559
 560 (define-vop (raw-instance-init/word)
 561   (:args (object :scs (descriptor-reg))
 562          (value :scs (unsigned-reg)))
 563   (:arg-types * unsigned-num)
 564   (:info index)
 565   (:temporary (:sc unsigned-reg) tmp)
 566   (:generator 5
 567     (loadw tmp object 0 instance-pointer-lowtag)
 568     (inst shr tmp n-widetag-bits)
 569     (inst mov (make-ea-for-raw-slot object index tmp 1) value)))
 570
 571 (define-vop (raw-instance-ref/single)
 572   (:translate %raw-instance-ref/single)
 573   (:policy :fast-safe)
 574   (:args (object :scs (descriptor-reg)) (index :scs (any-reg immediate)))
 575   (:arg-types * tagged-num)
 576   (:temporary (:sc unsigned-reg) tmp)
 577   (:results (value :scs (single-reg)))
 578   (:result-types single-float)
 579   (:generator 5
 580     (loadw tmp object 0 instance-pointer-lowtag)
 581     (inst shr tmp n-widetag-bits)
 582     (when (sc-is index any-reg)
 583       (inst shl tmp 2)
 584       (inst sub tmp index))
 585     (with-empty-tn@fp-top(value)
 586       (inst fld (make-ea-for-raw-slot object index tmp 1)))))
 587
 588 (define-vop (raw-instance-set/single)
 589   (:translate %raw-instance-set/single)
 590   (:policy :fast-safe)
 591   (:args (object :scs (descriptor-reg))
 592          (index :scs (any-reg immediate))
 593          (value :scs (single-reg) :target result))
 594   (:arg-types * tagged-num single-float)
 595   (:temporary (:sc unsigned-reg) tmp)
 596   (:results (result :scs (single-reg)))
 597   (:result-types single-float)
 598   (:generator 5
 599     (loadw tmp object 0 instance-pointer-lowtag)
 600     (inst shr tmp n-widetag-bits)
 601     (when (sc-is index any-reg)
 602       (inst shl tmp 2)
 603       (inst sub tmp index))
 604     (unless (zerop (tn-offset value))
 605       (inst fxch value))
 606     (inst fst (make-ea-for-raw-slot object index tmp 1))
 607     (cond
 608       ((zerop (tn-offset value))
 609         (unless (zerop (tn-offset result))
 610           (inst fst result)))
 611       ((zerop (tn-offset result))
 612         (inst fst value))
 613       (t
 614         (unless (location= value result)
 615           (inst fst result))
 616         (inst fxch value)))))
 617
 618 (define-vop (raw-instance-init/single)
 619   (:args (object :scs (descriptor-reg))
 620          (value :scs (single-reg)))
 621   (:arg-types * single-float)
 622   (:info index)
 623   (:temporary (:sc unsigned-reg) tmp)
 624   (:generator 5
 625     (loadw tmp object 0 instance-pointer-lowtag)
 626     (inst shr tmp n-widetag-bits)
 627     (with-tn@fp-top (value)
 628       (inst fst (make-ea-for-raw-slot object index tmp 1)))))
 629
 630 (define-vop (raw-instance-ref/double)
 631   (:translate %raw-instance-ref/double)
 632   (:policy :fast-safe)
 633   (:args (object :scs (descriptor-reg)) (index :scs (any-reg immediate)))
 634   (:arg-types * tagged-num)
 635   (:temporary (:sc unsigned-reg) tmp)
 636   (:results (value :scs (double-reg)))
 637   (:result-types double-float)
 638   (:generator 5
 639     (loadw tmp object 0 instance-pointer-lowtag)
 640     (inst shr tmp n-widetag-bits)
 641     (when (sc-is index any-reg)
 642       (inst shl tmp 2)
 643       (inst sub tmp index))
 644     (with-empty-tn@fp-top(value)
 645       (inst fldd (make-ea-for-raw-slot object index tmp 2)))))
 646
 647 (define-vop (raw-instance-set/double)
 648   (:translate %raw-instance-set/double)
 649   (:policy :fast-safe)
 650   (:args (object :scs (descriptor-reg))
 651          (index :scs (any-reg immediate))
 652          (value :scs (double-reg) :target result))
 653   (:arg-types * tagged-num double-float)
 654   (:temporary (:sc unsigned-reg) tmp)
 655   (:results (result :scs (double-reg)))
 656   (:result-types double-float)
 657   (:generator 5
 658     (loadw tmp object 0 instance-pointer-lowtag)
 659     (inst shr tmp n-widetag-bits)
 660     (when (sc-is index any-reg)
 661       (inst shl tmp 2)
 662       (inst sub tmp index))
 663     (unless (zerop (tn-offset value))
 664       (inst fxch value))
 665     (inst fstd (make-ea-for-raw-slot object index tmp 2))
 666     (cond
 667       ((zerop (tn-offset value))
 668         (unless (zerop (tn-offset result))
 669           (inst fstd result)))
 670       ((zerop (tn-offset result))
 671         (inst fstd value))
 672       (t
 673         (unless (location= value result)
 674           (inst fstd result))
 675         (inst fxch value)))))
 676
 677 (define-vop (raw-instance-init/double)
 678   (:args (object :scs (descriptor-reg))
 679          (value :scs (double-reg)))
 680   (:arg-types * double-float)
 681   (:info index)
 682   (:temporary (:sc unsigned-reg) tmp)
 683   (:generator 5
 684     (loadw tmp object 0 instance-pointer-lowtag)
 685     (inst shr tmp n-widetag-bits)
 686     (with-tn@fp-top (value)
 687       (inst fstd (make-ea-for-raw-slot object index tmp 2)))))
 688
 689 (define-vop (raw-instance-ref/complex-single)
 690   (:translate %raw-instance-ref/complex-single)
 691   (:policy :fast-safe)
 692   (:args (object :scs (descriptor-reg))
 693          (index :scs (any-reg immediate)))
 694   (:arg-types * positive-fixnum)
 695   (:temporary (:sc unsigned-reg) tmp)
 696   (:results (value :scs (complex-single-reg)))
 697   (:result-types complex-single-float)
 698   (:generator 5
 699     (loadw tmp object 0 instance-pointer-lowtag)
 700     (inst shr tmp n-widetag-bits)
 701     (when (sc-is index any-reg)
 702       (inst shl tmp 2)
 703       (inst sub tmp index))
 704     (let ((real-tn (complex-single-reg-real-tn value)))
 705       (with-empty-tn@fp-top (real-tn)
 706         (inst fld (make-ea-for-raw-slot object index tmp 2))))
 707     (let ((imag-tn (complex-single-reg-imag-tn value)))
 708       (with-empty-tn@fp-top (imag-tn)
 709         (inst fld (make-ea-for-raw-slot object index tmp 1))))))
 710
 711 (define-vop (raw-instance-set/complex-single)
 712   (:translate %raw-instance-set/complex-single)
 713   (:policy :fast-safe)
 714   (:args (object :scs (descriptor-reg))
 715          (index :scs (any-reg immediate))
 716          (value :scs (complex-single-reg) :target result))
 717   (:arg-types * positive-fixnum complex-single-float)
 718   (:temporary (:sc unsigned-reg) tmp)
 719   (:results (result :scs (complex-single-reg)))
 720   (:result-types complex-single-float)
 721   (:generator 5
 722     (loadw tmp object 0 instance-pointer-lowtag)
 723     (inst shr tmp n-widetag-bits)
 724     (when (sc-is index any-reg)
 725       (inst shl tmp 2)
 726       (inst sub tmp index))
 727     (let ((value-real (complex-single-reg-real-tn value))
 728           (result-real (complex-single-reg-real-tn result)))
 729       (cond ((zerop (tn-offset value-real))
 730              ;; Value is in ST0.
 731              (inst fst (make-ea-for-raw-slot object index tmp 2))
 732              (unless (zerop (tn-offset result-real))
 733                ;; Value is in ST0 but not result.
 734                (inst fst result-real)))
 735             (t
 736              ;; Value is not in ST0.
 737              (inst fxch value-real)
 738              (inst fst (make-ea-for-raw-slot object index tmp 2))
 739              (cond ((zerop (tn-offset result-real))
 740                     ;; The result is in ST0.
 741                     (inst fst value-real))
 742                    (t
 743                     ;; Neither value or result are in ST0
 744                     (unless (location= value-real result-real)
 745                       (inst fst result-real))
 746                     (inst fxch value-real))))))
 747     (let ((value-imag (complex-single-reg-imag-tn value))
 748           (result-imag (complex-single-reg-imag-tn result)))
 749       (inst fxch value-imag)
 750       (inst fst (make-ea-for-raw-slot object index tmp 1))
 751       (unless (location= value-imag result-imag)
 752         (inst fst result-imag))
 753       (inst fxch value-imag))))
 754
 755 (define-vop (raw-instance-init/complex-single)
 756   (:args (object :scs (descriptor-reg))
 757          (value :scs (complex-single-reg)))
 758   (:arg-types * complex-single-float)
 759   (:info index)
 760   (:temporary (:sc unsigned-reg) tmp)
 761   (:generator 5
 762     (loadw tmp object 0 instance-pointer-lowtag)
 763     (inst shr tmp n-widetag-bits)
 764     (let ((value-real (complex-single-reg-real-tn value)))
 765       (with-tn@fp-top (value-real)
 766         (inst fst (make-ea-for-raw-slot object index tmp 2))))
 767     (let ((value-imag (complex-single-reg-imag-tn value)))
 768       (with-tn@fp-top (value-imag)
 769         (inst fst (make-ea-for-raw-slot object index tmp 1))))))
 770
 771 (define-vop (raw-instance-ref/complex-double)
 772   (:translate %raw-instance-ref/complex-double)
 773   (:policy :fast-safe)
 774   (:args (object :scs (descriptor-reg))
 775          (index :scs (any-reg immediate)))
 776   (:arg-types * positive-fixnum)
 777   (:temporary (:sc unsigned-reg) tmp)
 778   (:results (value :scs (complex-double-reg)))
 779   (:result-types complex-double-float)
 780   (:generator 7
 781     (loadw tmp object 0 instance-pointer-lowtag)
 782     (inst shr tmp n-widetag-bits)
 783     (when (sc-is index any-reg)
 784       (inst shl tmp 2)
 785       (inst sub tmp index))
 786     (let ((real-tn (complex-double-reg-real-tn value)))
 787       (with-empty-tn@fp-top (real-tn)
 788         (inst fldd (make-ea-for-raw-slot object index tmp 4))))
 789     (let ((imag-tn (complex-double-reg-imag-tn value)))
 790       (with-empty-tn@fp-top (imag-tn)
 791         (inst fldd (make-ea-for-raw-slot object index tmp 2))))))
 792
 793 (define-vop (raw-instance-set/complex-double)
 794   (:translate %raw-instance-set/complex-double)
 795   (:policy :fast-safe)
 796   (:args (object :scs (descriptor-reg))
 797          (index :scs (any-reg immediate))
 798          (value :scs (complex-double-reg) :target result))
 799   (:arg-types * positive-fixnum complex-double-float)
 800   (:temporary (:sc unsigned-reg) tmp)
 801   (:results (result :scs (complex-double-reg)))
 802   (:result-types complex-double-float)
 803   (:generator 20
 804     (loadw tmp object 0 instance-pointer-lowtag)
 805     (inst shr tmp n-widetag-bits)
 806     (when (sc-is index any-reg)
 807       (inst shl tmp 2)
 808       (inst sub tmp index))
 809     (let ((value-real (complex-double-reg-real-tn value))
 810           (result-real (complex-double-reg-real-tn result)))
 811       (cond ((zerop (tn-offset value-real))
 812              ;; Value is in ST0.
 813              (inst fstd (make-ea-for-raw-slot object index tmp 4))
 814              (unless (zerop (tn-offset result-real))
 815                ;; Value is in ST0 but not result.
 816                (inst fstd result-real)))
 817             (t
 818              ;; Value is not in ST0.
 819              (inst fxch value-real)
 820              (inst fstd (make-ea-for-raw-slot object index tmp 4))
 821              (cond ((zerop (tn-offset result-real))
 822                     ;; The result is in ST0.
 823                     (inst fstd value-real))
 824                    (t
 825                     ;; Neither value or result are in ST0
 826                     (unless (location= value-real result-real)
 827                       (inst fstd result-real))
 828                     (inst fxch value-real))))))
 829     (let ((value-imag (complex-double-reg-imag-tn value))
 830           (result-imag (complex-double-reg-imag-tn result)))
 831       (inst fxch value-imag)
 832       (inst fstd (make-ea-for-raw-slot object index tmp 2))
 833       (unless (location= value-imag result-imag)
 834         (inst fstd result-imag))
 835       (inst fxch value-imag))))
 836
 837 (define-vop (raw-instance-init/complex-double)
 838   (:args (object :scs (descriptor-reg))
 839          (value :scs (complex-double-reg)))
 840   (:arg-types * complex-double-float)
 841   (:info index)
 842   (:temporary (:sc unsigned-reg) tmp)
 843   (:generator 20
 844     (loadw tmp object 0 instance-pointer-lowtag)
 845     (inst shr tmp n-widetag-bits)
 846     (let ((value-real (complex-double-reg-real-tn value)))
 847       (with-tn@fp-top (value-real)
 848         (inst fstd (make-ea-for-raw-slot object index tmp 4))))
 849     (let ((value-imag (complex-double-reg-imag-tn value)))
 850       (with-tn@fp-top (value-imag)
 851         (inst fstd (make-ea-for-raw-slot object index tmp 2))))))