-;;;; allocation VOPs for the x86
+;;;; allocation VOPs for the x86-64
;;;; This software is part of the SBCL system. See the README file for
;;;; more information.
(in-package "SB!VM")
\f
-;;;; LIST and LIST*
-
+;;;; CONS, LIST and LIST*
(define-vop (list-or-list*)
(:args (things :more t))
(:temporary (:sc unsigned-reg) ptr temp)
(:node-var node)
(:generator 0
(cond ((zerop num)
- ;; (move result nil-value)
- (inst mov result nil-value))
- ((and star (= num 1))
- (move result (tn-ref-tn things)))
- (t
- (macrolet
- ((store-car (tn list &optional (slot cons-car-slot))
- `(let ((reg
- (sc-case ,tn
- ((any-reg descriptor-reg) ,tn)
- ((control-stack)
- (move temp ,tn)
- temp))))
- (storew reg ,list ,slot list-pointer-lowtag))))
- (let ((cons-cells (if star (1- num) num)))
- (pseudo-atomic
- (allocation res (* (pad-data-block cons-size) cons-cells) node)
- (inst lea res
- (make-ea :byte :base res :disp list-pointer-lowtag))
- (move ptr res)
- (dotimes (i (1- cons-cells))
- (store-car (tn-ref-tn things) ptr)
- (setf things (tn-ref-across things))
- (inst add ptr (pad-data-block cons-size))
- (storew ptr ptr (- cons-cdr-slot cons-size)
- list-pointer-lowtag))
- (store-car (tn-ref-tn things) ptr)
- (cond (star
- (setf things (tn-ref-across things))
- (store-car (tn-ref-tn things) ptr cons-cdr-slot))
- (t
- (storew nil-value ptr cons-cdr-slot
- list-pointer-lowtag)))
- (aver (null (tn-ref-across things)))))
- (move result res))))))
+ ;; (move result nil-value)
+ (inst mov result nil-value))
+ ((and star (= num 1))
+ (move result (tn-ref-tn things)))
+ (t
+ (macrolet
+ ((store-car (tn list &optional (slot cons-car-slot))
+ `(let ((reg
+ (sc-case ,tn
+ ((any-reg descriptor-reg) ,tn)
+ ((control-stack)
+ (move temp ,tn)
+ temp))))
+ (storew reg ,list ,slot list-pointer-lowtag))))
+ (let ((cons-cells (if star (1- num) num))
+ (stack-allocate-p (awhen (sb!c::node-lvar node)
+ (sb!c::lvar-dynamic-extent it))))
+ (maybe-pseudo-atomic stack-allocate-p
+ (allocation res (* (pad-data-block cons-size) cons-cells) node
+ stack-allocate-p list-pointer-lowtag)
+ (move ptr res)
+ (dotimes (i (1- cons-cells))
+ (store-car (tn-ref-tn things) ptr)
+ (setf things (tn-ref-across things))
+ (inst add ptr (pad-data-block cons-size))
+ (storew ptr ptr (- cons-cdr-slot cons-size)
+ list-pointer-lowtag))
+ (store-car (tn-ref-tn things) ptr)
+ (cond (star
+ (setf things (tn-ref-across things))
+ (store-car (tn-ref-tn things) ptr cons-cdr-slot))
+ (t
+ (storew nil-value ptr cons-cdr-slot
+ list-pointer-lowtag)))
+ (aver (null (tn-ref-across things)))))
+ (move result res))))))
(define-vop (list list-or-list*)
(:variant nil))
\f
;;;; special-purpose inline allocators
+;;; ALLOCATE-VECTOR
+(define-vop (allocate-vector-on-heap)
+ (:args (type :scs (unsigned-reg))
+ (length :scs (any-reg))
+ (words :scs (any-reg)))
+ (:results (result :scs (descriptor-reg) :from :load))
+ (:arg-types positive-fixnum
+ positive-fixnum
+ positive-fixnum)
+ (:policy :fast-safe)
+ (:generator 100
+ (inst lea result (make-ea :byte :base words :disp
+ (+ (1- (ash 1 n-lowtag-bits))
+ (* vector-data-offset n-word-bytes))))
+ (inst and result (lognot lowtag-mask))
+ (pseudo-atomic
+ (allocation result result)
+ (inst lea result (make-ea :byte :base result :disp other-pointer-lowtag))
+ (storew type result 0 other-pointer-lowtag)
+ (storew length result vector-length-slot other-pointer-lowtag))))
+
+(define-vop (allocate-vector-on-stack)
+ (:args (type :scs (unsigned-reg))
+ (length :scs (any-reg))
+ (words :scs (any-reg) :target ecx))
+ (:temporary (:sc any-reg :offset ecx-offset :from (:argument 2)) ecx)
+ (:temporary (:sc any-reg :offset eax-offset :from (:argument 2)) zero)
+ (:temporary (:sc any-reg :offset edi-offset :from (:argument 0)) res)
+ (:results (result :scs (descriptor-reg) :from :load))
+ (:arg-types positive-fixnum
+ positive-fixnum
+ positive-fixnum)
+ (:translate allocate-vector)
+ (:policy :fast-safe)
+ (:node-var node)
+ (:generator 100
+ (inst lea result (make-ea :byte :base words :disp
+ (+ (1- (ash 1 n-lowtag-bits))
+ (* vector-data-offset n-word-bytes))))
+ (inst and result (lognot lowtag-mask))
+ ;; FIXME: It would be good to check for stack overflow here.
+ (move ecx words)
+ (inst shr ecx n-fixnum-tag-bits)
+ (allocation result result node t other-pointer-lowtag)
+ (inst cld)
+ (inst lea res
+ (make-ea :byte :base result :disp (- (* vector-data-offset n-word-bytes)
+ other-pointer-lowtag)))
+ (storew type result 0 other-pointer-lowtag)
+ (storew length result vector-length-slot other-pointer-lowtag)
+ (zeroize zero)
+ (inst rep)
+ (inst stos zero)))
+
+(in-package "SB!VM")
+
+;;;
(define-vop (allocate-code-object)
(:args (boxed-arg :scs (any-reg) :target boxed)
- (unboxed-arg :scs (any-reg) :target unboxed))
+ (unboxed-arg :scs (any-reg) :target unboxed))
(:results (result :scs (descriptor-reg) :from :eval))
(:temporary (:sc unsigned-reg :from (:argument 0)) boxed)
(:temporary (:sc unsigned-reg :from (:argument 1)) unboxed)
(with-fixed-allocation (result fdefn-widetag fdefn-size node)
(storew name result fdefn-name-slot other-pointer-lowtag)
(storew nil-value result fdefn-fun-slot other-pointer-lowtag)
- (storew (make-fixup (extern-alien-name "undefined_tramp") :foreign)
- result fdefn-raw-addr-slot other-pointer-lowtag))))
+ (storew (make-fixup "undefined_tramp" :foreign)
+ result fdefn-raw-addr-slot other-pointer-lowtag))))
(define-vop (make-closure)
(:args (function :to :save :scs (descriptor-reg)))
- (:info length)
+ (:info length stack-allocate-p)
(:temporary (:sc any-reg) temp)
(:results (result :scs (descriptor-reg)))
(:node-var node)
(:generator 10
- (pseudo-atomic
+ (maybe-pseudo-atomic stack-allocate-p
(let ((size (+ length closure-info-offset)))
- (allocation result (pad-data-block size) node)
- (inst lea result
- (make-ea :byte :base result :disp fun-pointer-lowtag))
+ (allocation result (pad-data-block size) node stack-allocate-p
+ fun-pointer-lowtag)
(storew (logior (ash (1- size) n-widetag-bits) closure-header-widetag)
- result 0 fun-pointer-lowtag))
+ result 0 fun-pointer-lowtag))
(loadw temp function closure-fun-slot fun-pointer-lowtag)
(storew temp result closure-fun-slot fun-pointer-lowtag))))
(define-vop (make-value-cell)
(:args (value :scs (descriptor-reg any-reg) :to :result))
(:results (result :scs (descriptor-reg) :from :eval))
+ (:info stack-allocate-p)
(:node-var node)
(:generator 10
(with-fixed-allocation
- (result value-cell-header-widetag value-cell-size node))
- (storew value result value-cell-value-slot other-pointer-lowtag)))
+ (result value-cell-header-widetag value-cell-size node stack-allocate-p)
+ (storew value result value-cell-value-slot other-pointer-lowtag))))
\f
;;;; automatic allocators for primitive objects
(:generator 1
(inst mov result unbound-marker-widetag)))
+(define-vop (make-funcallable-instance-tramp)
+ (:args)
+ (:results (result :scs (any-reg)))
+ (:generator 1
+ (inst lea result (make-fixup "funcallable_instance_tramp" :foreign))))
+
(define-vop (fixed-alloc)
(:args)
- (:info name words type lowtag)
+ (:info name words type lowtag stack-allocate-p)
(:ignore name)
(:results (result :scs (descriptor-reg)))
(:node-var node)
(:generator 50
- (pseudo-atomic
- (allocation result (pad-data-block words) node)
- (inst lea result (make-ea :byte :base result :disp lowtag))
+ (maybe-pseudo-atomic stack-allocate-p
+ (allocation result (pad-data-block words) node stack-allocate-p lowtag)
(when type
(storew (logior (ash (1- words) n-widetag-bits) type)
- result
- 0
- lowtag)))))
+ result
+ 0
+ lowtag)))))
(define-vop (var-alloc)
(:args (extra :scs (any-reg)))
(:node-var node)
(:generator 50
(inst lea bytes
- (make-ea :qword :base extra :disp (* (1+ words) n-word-bytes)))
+ (make-ea :qword :base extra :disp (* (1+ words) n-word-bytes)))
(inst mov header bytes)
(inst shl header (- n-widetag-bits 3)) ; w+1 to length field
- (inst lea header ; (w-1 << 8) | type
- (make-ea :qword :base header :disp (+ (ash -2 n-widetag-bits) type)))
+ (inst lea header ; (w-1 << 8) | type
+ (make-ea :qword :base header :disp (+ (ash -2 n-widetag-bits) type)))
(inst and bytes (lognot lowtag-mask))
(pseudo-atomic
(allocation result bytes node)
(inst lea result (make-ea :byte :base result :disp lowtag))
(storew header result 0 lowtag))))
-(define-vop (make-symbol)
+(define-vop (%make-symbol)
(:policy :fast-safe)
- (:translate make-symbol)
+ (:translate %make-symbol)
(:args (name :scs (descriptor-reg) :to :eval))
(:temporary (:sc unsigned-reg :from :eval) temp)
(:results (result :scs (descriptor-reg) :from :argument))
(with-fixed-allocation (result symbol-header-widetag symbol-size node)
(storew name result symbol-name-slot other-pointer-lowtag)
(storew unbound-marker-widetag
- result
- symbol-value-slot
- other-pointer-lowtag)
+ result
+ symbol-value-slot
+ other-pointer-lowtag)
;; Set up a random hash value for the symbol. Perhaps the object
;; address could be used for even faster and smaller code!
;; FIXME: We don't mind the symbol hash not being repeatable, so
;; we might as well add in the object address here, too. (Adding entropy
;; is good, even if ANSI doesn't understand that.)
(inst imul temp
- (make-fixup (extern-alien-name "fast_random_state") :foreign)
- 1103515245)
+ (make-fixup "fast_random_state" :foreign)
+ 1103515245)
(inst add temp 12345)
- (inst mov (make-fixup (extern-alien-name "fast_random_state") :foreign)
- temp)
+ (inst mov (make-fixup "fast_random_state" :foreign)
+ temp)
;; We want a positive fixnum for the hash value, so discard the LS bits.
;;
;; FIXME: OK, who wants to tell me (CSR) why these two
projects / sbcl.git / blobdiff