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 (init-slot set-slot))
  34
  35 (define-vop (compare-and-swap-slot)
  36   (:args (object :scs (descriptor-reg) :to :eval)
  37          (old :scs (descriptor-reg any-reg) :target eax)
  38          (new :scs (descriptor-reg any-reg)))
  39   (:temporary (:sc descriptor-reg :offset eax-offset
  40                    :from (:argument 1) :to :result :target result)
  41               eax)
  42   (:info name offset lowtag)
  43   (:ignore name)
  44   (:results (result :scs (descriptor-reg any-reg)))
  45   (:generator 5
  46      (move eax old)
  47      (inst cmpxchg (make-ea :dword :base object
  48                             :disp (- (* offset n-word-bytes) lowtag))
  49            new :lock)
  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         (with-tls-ea (EA :base tls :base-already-live-p t)
  77           (inst cmpxchg EA new :maybe-fs))
  78         (inst cmp eax no-tls-value-marker-widetag)
  79         (inst jmp :ne check)
  80         (move eax old))
  81       (inst cmpxchg (make-ea :dword :base symbol
  82                              :disp (- (* symbol-value-slot n-word-bytes)
  83                                       other-pointer-lowtag))
  84             new :lock)
  85       (emit-label check)
  86       (move result eax)
  87       (inst cmp result unbound-marker-widetag)
  88       (inst jmp :e unbound))))
  89
  90 (define-vop (%set-symbol-global-value cell-set)
  91   (:variant symbol-value-slot other-pointer-lowtag))
  92
  93 (define-vop (fast-symbol-global-value cell-ref)
  94   (:variant symbol-value-slot other-pointer-lowtag)
  95   (:policy :fast)
  96   (:translate sym-global-val))
  97
  98 (define-vop (symbol-global-value)
  99   (:policy :fast-safe)
 100   (:translate sym-global-val)
 101   (:args (object :scs (descriptor-reg) :to (:result 1)))
 102   (:results (value :scs (descriptor-reg any-reg)))
 103   (:vop-var vop)
 104   (:save-p :compute-only)
 105   (:generator 9
 106     (let ((err-lab (generate-error-code vop 'unbound-symbol-error object)))
 107       (loadw value object symbol-value-slot other-pointer-lowtag)
 108       (inst cmp value unbound-marker-widetag)
 109       (inst jmp :e err-lab))))
 110
 111 #!+sb-thread
 112 (progn
 113   (define-vop (set)
 114     (:args (symbol :scs (descriptor-reg))
 115            (value :scs (descriptor-reg any-reg)))
 116     (:temporary (:sc descriptor-reg) tls)
 117     (:generator 4
 118       (let ((global-val (gen-label))
 119             (done (gen-label)))
 120         (loadw tls symbol symbol-tls-index-slot other-pointer-lowtag)
 121         (with-tls-ea (EA :base tls :base-already-live-p t)
 122           (inst cmp EA no-tls-value-marker-widetag :maybe-fs)
 123           (inst jmp :z global-val)
 124           (inst mov EA value :maybe-fs))
 125         (inst jmp done)
 126         (emit-label global-val)
 127         (storew value symbol symbol-value-slot other-pointer-lowtag)
 128         (emit-label done))))
 129
 130   ;; With Symbol-Value, we check that the value isn't the trap object. So
 131   ;; Symbol-Value of NIL is NIL.
 132   (define-vop (symbol-value)
 133     (:translate symeval)
 134     (:policy :fast-safe)
 135     (:args (object :scs (descriptor-reg) :to (:result 1)))
 136     (:results (value :scs (descriptor-reg any-reg)))
 137     (:vop-var vop)
 138     (:save-p :compute-only)
 139     (:generator 9
 140       (let* ((check-unbound-label (gen-label))
 141              (err-lab (generate-error-code vop 'unbound-symbol-error object))
 142              (ret-lab (gen-label)))
 143         (loadw value object symbol-tls-index-slot other-pointer-lowtag)
 144         (with-tls-ea (EA :base value :base-already-live-p t)
 145           (inst mov value EA :maybe-fs))
 146         (inst cmp value no-tls-value-marker-widetag)
 147         (inst jmp :ne check-unbound-label)
 148         (loadw value object symbol-value-slot other-pointer-lowtag)
 149         (emit-label check-unbound-label)
 150         (inst cmp value unbound-marker-widetag)
 151         (inst jmp :e err-lab)
 152         (emit-label ret-lab))))
 153
 154   (define-vop (fast-symbol-value symbol-value)
 155     ;; KLUDGE: not really fast, in fact, because we're going to have to
 156     ;; do a full lookup of the thread-local area anyway.  But half of
 157     ;; the meaning of FAST-SYMBOL-VALUE is "do not signal an error if
 158     ;; unbound", which is used in the implementation of COPY-SYMBOL.  --
 159     ;; CSR, 2003-04-22
 160     (:policy :fast)
 161     (:translate symeval)
 162     (:generator 8
 163       (let ((ret-lab (gen-label)))
 164         (loadw value object symbol-tls-index-slot other-pointer-lowtag)
 165         (with-tls-ea (EA :base value :base-already-live-p t)
 166           (inst mov value EA :maybe-fs))
 167         (inst cmp value no-tls-value-marker-widetag)
 168         (inst jmp :ne ret-lab)
 169         (loadw value object symbol-value-slot other-pointer-lowtag)
 170         (emit-label ret-lab)))))
 171
 172 #!-sb-thread
 173 (progn
 174   (define-vop (symbol-value symbol-global-value)
 175     (:translate symeval))
 176   (define-vop (fast-symbol-value fast-symbol-global-value)
 177     (:translate symeval))
 178   (define-vop (set %set-symbol-global-value)))
 179
 180 #!+sb-thread
 181 (define-vop (boundp)
 182   (:translate boundp)
 183   (:policy :fast-safe)
 184   (:args (object :scs (descriptor-reg)))
 185   (:conditional :ne)
 186   (:temporary (:sc descriptor-reg #+nil(:from (:argument 0))) value)
 187   (:generator 9
 188     (let ((check-unbound-label (gen-label)))
 189       (loadw value object symbol-tls-index-slot other-pointer-lowtag)
 190       (with-tls-ea (EA :base value :base-already-live-p t)
 191         (inst mov value EA :maybe-fs))
 192       (inst cmp value no-tls-value-marker-widetag)
 193       (inst jmp :ne check-unbound-label)
 194       (loadw value object symbol-value-slot other-pointer-lowtag)
 195       (emit-label check-unbound-label)
 196       (inst cmp value unbound-marker-widetag))))
 197
 198 #!-sb-thread
 199 (define-vop (boundp)
 200   (:translate boundp)
 201   (:policy :fast-safe)
 202   (:args (object :scs (descriptor-reg)))
 203   (:conditional :ne)
 204   (:generator 9
 205     (inst cmp (make-ea-for-object-slot object symbol-value-slot
 206                                        other-pointer-lowtag)
 207           unbound-marker-widetag)))
 208
 209
 210 (define-vop (symbol-hash)
 211   (:policy :fast-safe)
 212   (:translate symbol-hash)
 213   (:args (symbol :scs (descriptor-reg)))
 214   (:results (res :scs (any-reg)))
 215   (:result-types positive-fixnum)
 216   (:generator 2
 217     ;; The symbol-hash slot of NIL holds NIL because it is also the
 218     ;; cdr slot, so we have to strip off the two low bits to make sure
 219     ;; it is a fixnum.  The lowtag selection magic that is required to
 220     ;; ensure this is explained in the comment in objdef.lisp
 221     (loadw res symbol symbol-hash-slot other-pointer-lowtag)
 222     (inst and res (lognot #b11))))
 223 \f
 224 ;;;; fdefinition (FDEFN) objects
 225
 226 (define-vop (fdefn-fun cell-ref)        ; /pfw - alpha
 227   (:variant fdefn-fun-slot other-pointer-lowtag))
 228
 229 (define-vop (safe-fdefn-fun)
 230   (:translate safe-fdefn-fun)
 231   (:policy :fast-safe)
 232   (:args (object :scs (descriptor-reg) :to (:result 1)))
 233   (:results (value :scs (descriptor-reg any-reg)))
 234   (:vop-var vop)
 235   (:save-p :compute-only)
 236   (:generator 10
 237     (loadw value object fdefn-fun-slot other-pointer-lowtag)
 238     (inst cmp value nil-value)
 239     (let ((err-lab (generate-error-code vop 'undefined-fun-error object)))
 240       (inst jmp :e err-lab))))
 241
 242 (define-vop (set-fdefn-fun)
 243   (:policy :fast-safe)
 244   (:translate (setf fdefn-fun))
 245   (:args (function :scs (descriptor-reg) :target result)
 246          (fdefn :scs (descriptor-reg)))
 247   (:temporary (:sc unsigned-reg) raw)
 248   (:temporary (:sc byte-reg) type)
 249   (:results (result :scs (descriptor-reg)))
 250   (:generator 38
 251     (load-type type function (- fun-pointer-lowtag))
 252     (inst lea raw
 253           (make-ea-for-object-slot function simple-fun-code-offset
 254                                    fun-pointer-lowtag))
 255     (inst cmp type simple-fun-widetag)
 256     (inst jmp :e normal-fn)
 257     (inst lea raw (make-fixup 'closure-tramp :assembly-routine))
 258     NORMAL-FN
 259     (storew function fdefn fdefn-fun-slot other-pointer-lowtag)
 260     (storew raw fdefn fdefn-raw-addr-slot other-pointer-lowtag)
 261     (move result function)))
 262
 263 (define-vop (fdefn-makunbound)
 264   (:policy :fast-safe)
 265   (:translate fdefn-makunbound)
 266   (:args (fdefn :scs (descriptor-reg) :target result))
 267   (:results (result :scs (descriptor-reg)))
 268   (:generator 38
 269     (storew nil-value fdefn fdefn-fun-slot other-pointer-lowtag)
 270     (storew (make-fixup 'undefined-tramp :assembly-routine)
 271             fdefn fdefn-raw-addr-slot other-pointer-lowtag)
 272     (move result fdefn)))
 273 \f
 274 ;;;; binding and unbinding
 275
 276 ;;; BIND -- Establish VAL as a binding for SYMBOL. Save the old value and
 277 ;;; the symbol on the binding stack and stuff the new value into the
 278 ;;; symbol.
 279 ;;; See the "Chapter 9: Specials" of the SBCL Internals Manual.
 280 ;;
 281 #!+sb-thread
 282 (macrolet
 283     ((def (vopname symbol-arg info sc-offset load-tls-index)
 284        `(define-vop (,vopname)
 285           (:args (val :scs (any-reg descriptor-reg)) ,@symbol-arg)
 286           ,@info
 287           (:temporary (:sc unsigned-reg ,@sc-offset) tls-index)
 288           (:temporary (:sc unsigned-reg) bsp #!+win32 temp)
 289           (:generator 10 ; cost is irrelevant. we explicitly pick a vop
 290            (load-binding-stack-pointer bsp)
 291            ,@load-tls-index
 292            (inst add bsp (* binding-size n-word-bytes))
 293            (store-binding-stack-pointer bsp)
 294      ;; with-tls-ea on win32 causes tls-index to be an absolute address
 295      ;; which is problematic when UNBIND uses with-tls-ea too.
 296            #!+win32(move temp tls-index)
 297            (with-tls-ea (EA :base tls-index :base-already-live-p t)
 298             (inst push EA :maybe-fs)
 299             (popw bsp (- binding-value-slot binding-size))
 300             (storew #!-win32 tls-index
 301                     #!+win32 temp
 302                     bsp (- binding-symbol-slot binding-size))
 303             (inst mov EA val :maybe-fs))))))
 304   (def bind ; bind a known symbol
 305        nil ((:info symbol)) nil
 306        ((inst mov tls-index (make-fixup symbol :symbol-tls-index))))
 307   (def dynbind ; bind a symbol in a PROGV form
 308        ((symbol :scs (descriptor-reg))) nil (:offset eax-offset)
 309        ((inst mov tls-index (tls-index-of symbol))
 310         (inst test tls-index tls-index)
 311         (inst jmp :ne tls-index-valid)
 312         (inst mov tls-index symbol)
 313         (inst call (make-fixup 'alloc-tls-index :assembly-routine))
 314         TLS-INDEX-VALID)))
 315
 316 #!-sb-thread
 317 (define-vop (dynbind)
 318   (:args (val :scs (any-reg descriptor-reg))
 319          (symbol :scs (descriptor-reg)))
 320   (:temporary (:sc unsigned-reg) temp bsp)
 321   (:generator 5
 322     (load-symbol-value bsp *binding-stack-pointer*)
 323     (loadw temp symbol symbol-value-slot other-pointer-lowtag)
 324     (inst add bsp (* binding-size n-word-bytes))
 325     (store-symbol-value bsp *binding-stack-pointer*)
 326     (storew temp bsp (- binding-value-slot binding-size))
 327     (storew symbol bsp (- binding-symbol-slot binding-size))
 328     (storew val symbol symbol-value-slot other-pointer-lowtag)))
 329
 330 #!+sb-thread
 331 (define-vop (unbind)
 332   (:temporary (:sc unsigned-reg) temp bsp tls-index)
 333   (:generator 0
 334     (load-binding-stack-pointer bsp)
 335     ;; Load SYMBOL from stack, and get the TLS-INDEX.
 336     (loadw tls-index bsp (- binding-symbol-slot binding-size))
 337     ;; Load VALUE from stack, then restore it to the TLS area.
 338     (loadw temp bsp (- binding-value-slot binding-size))
 339     (with-tls-ea (EA :base tls-index :base-already-live-p t)
 340       (inst mov EA temp :maybe-fs))
 341     ;; Zero out the stack.
 342     (inst sub bsp (* binding-size n-word-bytes))
 343     (storew 0 bsp binding-symbol-slot)
 344     (storew 0 bsp binding-value-slot)
 345     (store-binding-stack-pointer bsp)))
 346
 347 #!-sb-thread
 348 (define-vop (unbind)
 349   (:temporary (:sc unsigned-reg) symbol value bsp)
 350   (:generator 0
 351     (load-symbol-value bsp *binding-stack-pointer*)
 352     (loadw symbol bsp (- binding-symbol-slot binding-size))
 353     (loadw value bsp (- binding-value-slot binding-size))
 354     (storew value symbol symbol-value-slot other-pointer-lowtag)
 355     (storew 0 bsp (- binding-symbol-slot binding-size))
 356     (storew 0 bsp (- binding-value-slot binding-size))
 357     (inst sub bsp (* binding-size n-word-bytes))
 358     (store-symbol-value bsp *binding-stack-pointer*)))
 359
 360
 361 (define-vop (unbind-to-here)
 362   (:args (where :scs (descriptor-reg any-reg)))
 363   (:temporary (:sc unsigned-reg) symbol value bsp)
 364   (:generator 0
 365     (load-binding-stack-pointer bsp)
 366     (inst cmp where bsp)
 367     (inst jmp :e done)
 368
 369     LOOP
 370     (inst sub bsp (* binding-size n-word-bytes))
 371     (loadw symbol bsp binding-symbol-slot)
 372     (inst test symbol symbol)
 373     (inst jmp :z skip)
 374     ;; Bind stack debug sentinels have the unbound marker in the symbol slot
 375     (inst cmp symbol unbound-marker-widetag)
 376     (inst jmp :eq skip)
 377     (loadw value bsp binding-value-slot)
 378     #!-sb-thread (storew value symbol symbol-value-slot other-pointer-lowtag)
 379     #!+sb-thread (with-tls-ea (EA :base symbol :base-already-live-p t)
 380                    (inst mov EA value :maybe-fs))
 381     (storew 0 bsp binding-symbol-slot)
 382
 383     SKIP
 384     (storew 0 bsp binding-value-slot)
 385     (inst cmp where bsp)
 386     (inst jmp :ne loop)
 387     (store-binding-stack-pointer bsp)
 388
 389     DONE))
 390 \f
 391 ;;;; closure indexing
 392
 393 (define-full-reffer closure-index-ref *
 394   closure-info-offset fun-pointer-lowtag
 395   (any-reg descriptor-reg) * %closure-index-ref)
 396
 397 (define-full-setter set-funcallable-instance-info *
 398   funcallable-instance-info-offset fun-pointer-lowtag
 399   (any-reg descriptor-reg) * %set-funcallable-instance-info)
 400
 401 (define-full-reffer funcallable-instance-info *
 402   funcallable-instance-info-offset fun-pointer-lowtag
 403   (descriptor-reg any-reg) * %funcallable-instance-info)
 404
 405 (define-vop (closure-ref slot-ref)
 406   (:variant closure-info-offset fun-pointer-lowtag))
 407
 408 (define-vop (closure-init slot-set)
 409   (:variant closure-info-offset fun-pointer-lowtag))
 410
 411 (define-vop (closure-init-from-fp)
 412   (:args (object :scs (descriptor-reg)))
 413   (:info offset)
 414   (:generator 4
 415     (storew ebp-tn object (+ closure-info-offset offset) fun-pointer-lowtag)))
 416 \f
 417 ;;;; value cell hackery
 418
 419 (define-vop (value-cell-ref cell-ref)
 420   (:variant value-cell-value-slot other-pointer-lowtag))
 421
 422 (define-vop (value-cell-set cell-set)
 423   (:variant value-cell-value-slot other-pointer-lowtag))
 424 \f
 425 ;;;; structure hackery
 426
 427 (define-vop (instance-length)
 428   (:policy :fast-safe)
 429   (:translate %instance-length)
 430   (:args (struct :scs (descriptor-reg)))
 431   (:results (res :scs (unsigned-reg)))
 432   (:result-types positive-fixnum)
 433   (:generator 4
 434     (loadw res struct 0 instance-pointer-lowtag)
 435     (inst shr res n-widetag-bits)))
 436
 437 (define-full-reffer instance-index-ref *
 438   instance-slots-offset instance-pointer-lowtag
 439   (any-reg descriptor-reg) *
 440   %instance-ref)
 441
 442 (define-full-setter instance-index-set *
 443   instance-slots-offset instance-pointer-lowtag
 444   (any-reg descriptor-reg) *
 445   %instance-set)
 446
 447 (define-full-compare-and-swap %instance-cas instance
 448   instance-slots-offset instance-pointer-lowtag
 449   (any-reg descriptor-reg) *
 450   %instance-cas)
 451 (define-full-compare-and-swap %raw-instance-cas/word instance
 452   instance-slots-offset instance-pointer-lowtag
 453   (unsigned-reg) unsigned-num %raw-instance-cas/word)
 454 \f
 455 ;;;; code object frobbing
 456
 457 (define-full-reffer code-header-ref * 0 other-pointer-lowtag
 458   (any-reg descriptor-reg) * code-header-ref)
 459
 460 (define-full-setter code-header-set * 0 other-pointer-lowtag
 461   (any-reg descriptor-reg) * code-header-set)
 462 \f
 463 ;;;; raw instance slot accessors
 464
 465 (defun make-ea-for-raw-slot (object index &optional (displacement 0))
 466   ;; instance-init vops pass a literal integer, ref/set can use an immediate tn
 467   (let ((imm-index (cond ((integerp index) index)
 468                          ((sc-is index immediate) (tn-value index)))))
 469     (make-ea :dword :base object
 470              ;; If index is a register, it needs no scaling - it has tag bits.
 471              :index (unless imm-index index) :scale 1
 472              :disp (- (ash (+ (or imm-index 0) displacement instance-slots-offset)
 473                            word-shift) instance-pointer-lowtag))))
 474
 475 (define-vop (raw-instance-ref/word)
 476   (:translate %raw-instance-ref/word)
 477   (:policy :fast-safe)
 478   (:args (object :scs (descriptor-reg)) (index :scs (any-reg immediate)))
 479   (:arg-types * tagged-num)
 480   (:results (value :scs (unsigned-reg)))
 481   (:result-types unsigned-num)
 482   (:generator 5
 483     (inst mov value (make-ea-for-raw-slot object index))))
 484
 485 (define-vop (raw-instance-set/word)
 486   (:translate %raw-instance-set/word)
 487   (:policy :fast-safe)
 488   (:args (object :scs (descriptor-reg))
 489          (index :scs (any-reg immediate))
 490          (value :scs (unsigned-reg) :target result))
 491   (:arg-types * tagged-num unsigned-num)
 492   (:results (result :scs (unsigned-reg)))
 493   (:result-types unsigned-num)
 494   (:generator 5
 495     (inst mov (make-ea-for-raw-slot object index) value)
 496     (move result value)))
 497
 498 (define-vop (raw-instance-init/word)
 499   (:args (object :scs (descriptor-reg))
 500          (value :scs (unsigned-reg)))
 501   (:arg-types * unsigned-num)
 502   (:info index)
 503   (:generator 5
 504     (inst mov (make-ea-for-raw-slot object index) value)))
 505
 506 (define-vop (raw-instance-ref/signed-word)
 507   (:translate %raw-instance-ref/signed-word)
 508   (:policy :fast-safe)
 509   (:args (object :scs (descriptor-reg)) (index :scs (any-reg immediate)))
 510   (:arg-types * tagged-num)
 511   (:results (value :scs (signed-reg)))
 512   (:result-types signed-num)
 513   (:generator 5
 514     (inst mov value (make-ea-for-raw-slot object index))))
 515
 516 (define-vop (raw-instance-set/signed-word)
 517   (:translate %raw-instance-set/signed-word)
 518   (:policy :fast-safe)
 519   (:args (object :scs (descriptor-reg))
 520          (index :scs (any-reg immediate))
 521          (value :scs (signed-reg) :target result))
 522   (:arg-types * tagged-num signed-num)
 523   (:results (result :scs (signed-reg)))
 524   (:result-types signed-num)
 525   (:generator 5
 526     (inst mov (make-ea-for-raw-slot object index) value)
 527     (move result value)))
 528
 529 (define-vop (raw-instance-init/signed-word)
 530   (:args (object :scs (descriptor-reg))
 531          (value :scs (signed-reg)))
 532   (:arg-types * signed-num)
 533   (:info index)
 534   (:generator 5
 535     (inst mov (make-ea-for-raw-slot object index) value)))
 536
 537 (define-vop (raw-instance-atomic-incf/word)
 538   (:translate %raw-instance-atomic-incf/word)
 539   (:policy :fast-safe)
 540   (:args (object :scs (descriptor-reg))
 541          (index :scs (any-reg immediate))
 542          (diff :scs (unsigned-reg) :target result))
 543   (:arg-types * tagged-num unsigned-num)
 544   (:results (result :scs (unsigned-reg)))
 545   (:result-types unsigned-num)
 546   (:generator 5
 547     (inst xadd (make-ea-for-raw-slot object index) diff :lock)
 548     (move result diff)))
 549
 550 (define-vop (raw-instance-ref/single)
 551   (:translate %raw-instance-ref/single)
 552   (:policy :fast-safe)
 553   (:args (object :scs (descriptor-reg)) (index :scs (any-reg immediate)))
 554   (:arg-types * tagged-num)
 555   (:results (value :scs (single-reg)))
 556   (:result-types single-float)
 557   (:generator 5
 558     (with-empty-tn@fp-top(value)
 559       (inst fld (make-ea-for-raw-slot object index)))))
 560
 561 (define-vop (raw-instance-set/single)
 562   (:translate %raw-instance-set/single)
 563   (:policy :fast-safe)
 564   (:args (object :scs (descriptor-reg))
 565          (index :scs (any-reg immediate))
 566          (value :scs (single-reg) :target result))
 567   (:arg-types * tagged-num single-float)
 568   (:results (result :scs (single-reg)))
 569   (:result-types single-float)
 570   (:generator 5
 571     (unless (zerop (tn-offset value))
 572       (inst fxch value))
 573     (inst fst (make-ea-for-raw-slot object index))
 574     (cond
 575       ((zerop (tn-offset value))
 576         (unless (zerop (tn-offset result))
 577           (inst fst result)))
 578       ((zerop (tn-offset result))
 579         (inst fst value))
 580       (t
 581         (unless (location= value result)
 582           (inst fst result))
 583         (inst fxch value)))))
 584
 585 (define-vop (raw-instance-init/single)
 586   (:args (object :scs (descriptor-reg))
 587          (value :scs (single-reg)))
 588   (:arg-types * single-float)
 589   (:info index)
 590   (:generator 5
 591     (with-tn@fp-top (value)
 592       (inst fst (make-ea-for-raw-slot object index)))))
 593
 594 (define-vop (raw-instance-ref/double)
 595   (:translate %raw-instance-ref/double)
 596   (:policy :fast-safe)
 597   (:args (object :scs (descriptor-reg)) (index :scs (any-reg immediate)))
 598   (:arg-types * tagged-num)
 599   (:results (value :scs (double-reg)))
 600   (:result-types double-float)
 601   (:generator 5
 602     (with-empty-tn@fp-top(value)
 603       (inst fldd (make-ea-for-raw-slot object index)))))
 604
 605 (define-vop (raw-instance-set/double)
 606   (:translate %raw-instance-set/double)
 607   (:policy :fast-safe)
 608   (:args (object :scs (descriptor-reg))
 609          (index :scs (any-reg immediate))
 610          (value :scs (double-reg) :target result))
 611   (:arg-types * tagged-num double-float)
 612   (:results (result :scs (double-reg)))
 613   (:result-types double-float)
 614   (:generator 5
 615     (unless (zerop (tn-offset value))
 616       (inst fxch value))
 617     (inst fstd (make-ea-for-raw-slot object index))
 618     (cond
 619       ((zerop (tn-offset value))
 620         (unless (zerop (tn-offset result))
 621           (inst fstd result)))
 622       ((zerop (tn-offset result))
 623         (inst fstd value))
 624       (t
 625         (unless (location= value result)
 626           (inst fstd result))
 627         (inst fxch value)))))
 628
 629 (define-vop (raw-instance-init/double)
 630   (:args (object :scs (descriptor-reg))
 631          (value :scs (double-reg)))
 632   (:arg-types * double-float)
 633   (:info index)
 634   (:generator 5
 635     (with-tn@fp-top (value)
 636       (inst fstd (make-ea-for-raw-slot object index)))))
 637
 638 (define-vop (raw-instance-ref/complex-single)
 639   (:translate %raw-instance-ref/complex-single)
 640   (:policy :fast-safe)
 641   (:args (object :scs (descriptor-reg))
 642          (index :scs (any-reg immediate)))
 643   (:arg-types * positive-fixnum)
 644   (:results (value :scs (complex-single-reg)))
 645   (:result-types complex-single-float)
 646   (:generator 5
 647     (let ((real-tn (complex-single-reg-real-tn value)))
 648       (with-empty-tn@fp-top (real-tn)
 649         (inst fld (make-ea-for-raw-slot object index))))
 650     (let ((imag-tn (complex-single-reg-imag-tn value)))
 651       (with-empty-tn@fp-top (imag-tn)
 652         (inst fld (make-ea-for-raw-slot object index 1))))))
 653
 654 (define-vop (raw-instance-set/complex-single)
 655   (:translate %raw-instance-set/complex-single)
 656   (:policy :fast-safe)
 657   (:args (object :scs (descriptor-reg))
 658          (index :scs (any-reg immediate))
 659          (value :scs (complex-single-reg) :target result))
 660   (:arg-types * positive-fixnum complex-single-float)
 661   (:results (result :scs (complex-single-reg)))
 662   (:result-types complex-single-float)
 663   (:generator 5
 664     (let ((value-real (complex-single-reg-real-tn value))
 665           (result-real (complex-single-reg-real-tn result)))
 666       (cond ((zerop (tn-offset value-real))
 667              ;; Value is in ST0.
 668              (inst fst (make-ea-for-raw-slot object index))
 669              (unless (zerop (tn-offset result-real))
 670                ;; Value is in ST0 but not result.
 671                (inst fst result-real)))
 672             (t
 673              ;; Value is not in ST0.
 674              (inst fxch value-real)
 675              (inst fst (make-ea-for-raw-slot object index))
 676              (cond ((zerop (tn-offset result-real))
 677                     ;; The result is in ST0.
 678                     (inst fst value-real))
 679                    (t
 680                     ;; Neither value or result are in ST0
 681                     (unless (location= value-real result-real)
 682                       (inst fst result-real))
 683                     (inst fxch value-real))))))
 684     (let ((value-imag (complex-single-reg-imag-tn value))
 685           (result-imag (complex-single-reg-imag-tn result)))
 686       (inst fxch value-imag)
 687       (inst fst (make-ea-for-raw-slot object index 1))
 688       (unless (location= value-imag result-imag)
 689         (inst fst result-imag))
 690       (inst fxch value-imag))))
 691
 692 (define-vop (raw-instance-init/complex-single)
 693   (:args (object :scs (descriptor-reg))
 694          (value :scs (complex-single-reg)))
 695   (:arg-types * complex-single-float)
 696   (:info index)
 697   (:generator 5
 698     (let ((value-real (complex-single-reg-real-tn value)))
 699       (with-tn@fp-top (value-real)
 700         (inst fst (make-ea-for-raw-slot object index))))
 701     (let ((value-imag (complex-single-reg-imag-tn value)))
 702       (with-tn@fp-top (value-imag)
 703         (inst fst (make-ea-for-raw-slot object index 1))))))
 704
 705 (define-vop (raw-instance-ref/complex-double)
 706   (:translate %raw-instance-ref/complex-double)
 707   (:policy :fast-safe)
 708   (:args (object :scs (descriptor-reg))
 709          (index :scs (any-reg immediate)))
 710   (:arg-types * positive-fixnum)
 711   (:results (value :scs (complex-double-reg)))
 712   (:result-types complex-double-float)
 713   (:generator 7
 714     (let ((real-tn (complex-double-reg-real-tn value)))
 715       (with-empty-tn@fp-top (real-tn)
 716         (inst fldd (make-ea-for-raw-slot object index))))
 717     (let ((imag-tn (complex-double-reg-imag-tn value)))
 718       (with-empty-tn@fp-top (imag-tn)
 719         (inst fldd (make-ea-for-raw-slot object index 2))))))
 720
 721 (define-vop (raw-instance-set/complex-double)
 722   (:translate %raw-instance-set/complex-double)
 723   (:policy :fast-safe)
 724   (:args (object :scs (descriptor-reg))
 725          (index :scs (any-reg immediate))
 726          (value :scs (complex-double-reg) :target result))
 727   (:arg-types * positive-fixnum complex-double-float)
 728   (:results (result :scs (complex-double-reg)))
 729   (:result-types complex-double-float)
 730   (:generator 20
 731     (let ((value-real (complex-double-reg-real-tn value))
 732           (result-real (complex-double-reg-real-tn result)))
 733       (cond ((zerop (tn-offset value-real))
 734              ;; Value is in ST0.
 735              (inst fstd (make-ea-for-raw-slot object index))
 736              (unless (zerop (tn-offset result-real))
 737                ;; Value is in ST0 but not result.
 738                (inst fstd result-real)))
 739             (t
 740              ;; Value is not in ST0.
 741              (inst fxch value-real)
 742              (inst fstd (make-ea-for-raw-slot object index))
 743              (cond ((zerop (tn-offset result-real))
 744                     ;; The result is in ST0.
 745                     (inst fstd value-real))
 746                    (t
 747                     ;; Neither value or result are in ST0
 748                     (unless (location= value-real result-real)
 749                       (inst fstd result-real))
 750                     (inst fxch value-real))))))
 751     (let ((value-imag (complex-double-reg-imag-tn value))
 752           (result-imag (complex-double-reg-imag-tn result)))
 753       (inst fxch value-imag)
 754       (inst fstd (make-ea-for-raw-slot object index 2))
 755       (unless (location= value-imag result-imag)
 756         (inst fstd result-imag))
 757       (inst fxch value-imag))))
 758
 759 (define-vop (raw-instance-init/complex-double)
 760   (:args (object :scs (descriptor-reg))
 761          (value :scs (complex-double-reg)))
 762   (:arg-types * complex-double-float)
 763   (:info index)
 764   (:generator 20
 765     (let ((value-real (complex-double-reg-real-tn value)))
 766       (with-tn@fp-top (value-real)
 767         (inst fstd (make-ea-for-raw-slot object index))))
 768     (let ((value-imag (complex-double-reg-imag-tn value)))
 769       (with-tn@fp-top (value-imag)
 770         (inst fstd (make-ea-for-raw-slot object index 2))))))