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array.lisp
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array.lisp
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;;;; array operations for the x86 VM
;;;; This software is part of the SBCL system. See the README file for
;;;; more information.
;;;;
;;;; This software is derived from the CMU CL system, which was
;;;; written at Carnegie Mellon University and released into the
;;;; public domain. The software is in the public domain and is
;;;; provided with absolutely no warranty. See the COPYING and CREDITS
;;;; files for more information.
(in-package "SB!VM")
;;;; allocator for the array header
(define-vop (make-array-header)
(:translate make-array-header)
(:policy :fast-safe)
(:args (type :scs (any-reg))
(rank :scs (any-reg)))
(:arg-types positive-fixnum positive-fixnum)
(:temporary (:sc any-reg :to :eval) bytes)
(:temporary (:sc any-reg :to :result) header)
(:results (result :scs (descriptor-reg) :from :eval))
(:node-var node)
(:generator 13
(inst lea bytes
(make-ea :dword :base rank
:disp (+ (* (1+ array-dimensions-offset) n-word-bytes)
lowtag-mask)))
(inst and bytes (lognot lowtag-mask))
(inst lea header (make-ea :dword :base rank
:disp (fixnumize (1- array-dimensions-offset))))
(inst shl header n-widetag-bits)
(inst or header type)
(inst shr header 2)
(pseudo-atomic
(allocation result bytes node)
(inst lea result (make-ea :dword :base result :disp other-pointer-lowtag))
(storew header result 0 other-pointer-lowtag))))
;;;; additional accessors and setters for the array header
(define-full-reffer %array-dimension *
array-dimensions-offset other-pointer-lowtag
(any-reg) positive-fixnum sb!kernel:%array-dimension)
(define-full-setter %set-array-dimension *
array-dimensions-offset other-pointer-lowtag
(any-reg) positive-fixnum sb!kernel:%set-array-dimension)
(define-vop (array-rank-vop)
(:translate sb!kernel:%array-rank)
(:policy :fast-safe)
(:args (x :scs (descriptor-reg)))
(:results (res :scs (unsigned-reg)))
(:result-types positive-fixnum)
(:generator 6
(loadw res x 0 other-pointer-lowtag)
(inst shr res n-widetag-bits)
(inst sub res (1- array-dimensions-offset))))
;;;; bounds checking routine
;;; Note that the immediate SC for the index argument is disabled
;;; because it is not possible to generate a valid error code SC for
;;; an immediate value.
;;;
;;; FIXME: As per the KLUDGE note explaining the :IGNORE-FAILURE-P
;;; flag in build-order.lisp-expr, compiling this file causes warnings
;;; Argument FOO to VOP CHECK-BOUND has SC restriction
;;; DESCRIPTOR-REG which is not allowed by the operand type:
;;; (:OR POSITIVE-FIXNUM)
;;; CSR's message "format ~/ /" on sbcl-devel 2002-03-12 contained
;;; a possible patch, described as
;;; Another patch is included more for information than anything --
;;; removing the descriptor-reg SCs from the CHECK-BOUND vop in
;;; x86/array.lisp seems to allow that file to compile without error[*],
;;; and build; I haven't tested rebuilding capability, but I'd be
;;; surprised if there were a problem. I'm not certain that this is the
;;; correct fix, though, as the restrictions on the arguments to the VOP
;;; aren't the same as in the sparc and alpha ports, where, incidentally,
;;; the corresponding file builds without error currently.
;;; Since neither of us (CSR or WHN) was quite sure that this is the
;;; right thing, I've just recorded the patch here in hopes it might
;;; help when someone attacks this problem again:
;;; diff -u -r1.7 array.lisp
;;; --- src/compiler/x86/array.lisp 11 Oct 2001 14:05:26 -0000 1.7
;;; +++ src/compiler/x86/array.lisp 12 Mar 2002 12:23:37 -0000
;;; @@ -76,10 +76,10 @@
;;; (:translate %check-bound)
;;; (:policy :fast-safe)
;;; (:args (array :scs (descriptor-reg))
;;; - (bound :scs (any-reg descriptor-reg))
;;; - (index :scs (any-reg descriptor-reg #+nil immediate) :target result))
;;; + (bound :scs (any-reg))
;;; + (index :scs (any-reg #+nil immediate) :target result))
;;; (:arg-types * positive-fixnum tagged-num)
;;; - (:results (result :scs (any-reg descriptor-reg)))
;;; + (:results (result :scs (any-reg)))
;;; (:result-types positive-fixnum)
;;; (:vop-var vop)
;;; (:save-p :compute-only)
(define-vop (check-bound)
(:translate %check-bound)
(:policy :fast-safe)
(:args (array :scs (descriptor-reg))
(bound :scs (any-reg))
(index :scs (any-reg #+nil immediate) :target result))
(:arg-types * positive-fixnum tagged-num)
(:results (result :scs (any-reg)))
(:result-types positive-fixnum)
(:vop-var vop)
(:save-p :compute-only)
(:generator 5
(let ((error (generate-error-code vop invalid-array-index-error
array bound index))
(index (if (sc-is index immediate)
(fixnumize (tn-value index))
index)))
(inst cmp bound index)
;; We use below-or-equal even though it's an unsigned test,
;; because negative indexes appear as large unsigned numbers.
;; Therefore, we get the <0 and >=bound test all rolled into one.
(inst jmp :be error)
(unless (and (tn-p index) (location= result index))
(inst mov result index)))))
;;;; accessors/setters
;;; variants built on top of WORD-INDEX-REF, etc. I.e., those vectors
;;; whose elements are represented in integer registers and are built
;;; out of 8, 16, or 32 bit elements.
(macrolet ((def-full-data-vector-frobs (type element-type &rest scs)
`(progn
(define-full-reffer+offset ,(symbolicate "DATA-VECTOR-REF-WITH-OFFSET/" type)
,type vector-data-offset other-pointer-lowtag ,scs
,element-type data-vector-ref-with-offset)
(define-full-setter+offset ,(symbolicate "DATA-VECTOR-SET-WITH-OFFSET/" type)
,type vector-data-offset other-pointer-lowtag ,scs
,element-type data-vector-set-with-offset))))
(def-full-data-vector-frobs simple-vector * descriptor-reg any-reg)
(def-full-data-vector-frobs simple-array-unsigned-byte-32 unsigned-num
unsigned-reg)
(def-full-data-vector-frobs simple-array-signed-byte-30 tagged-num any-reg)
(def-full-data-vector-frobs simple-array-unsigned-byte-29 positive-fixnum any-reg)
(def-full-data-vector-frobs simple-array-signed-byte-32 signed-num
signed-reg)
(def-full-data-vector-frobs simple-array-unsigned-byte-31 unsigned-num
unsigned-reg)
#!+sb-unicode
(def-full-data-vector-frobs simple-character-string character character-reg))
(define-full-compare-and-swap %compare-and-swap-svref simple-vector
vector-data-offset other-pointer-lowtag
(descriptor-reg any-reg) *
%compare-and-swap-svref)
;;;; integer vectors whose elements are smaller than a byte, i.e.,
;;;; bit, 2-bit, and 4-bit vectors
(macrolet ((def-small-data-vector-frobs (type bits)
(let* ((elements-per-word (floor n-word-bits bits))
(bit-shift (1- (integer-length elements-per-word))))
`(progn
(define-vop (,(symbolicate 'data-vector-ref-with-offset/ type))
(:note "inline array access")
(:translate data-vector-ref-with-offset)
(:policy :fast-safe)
(:args (object :scs (descriptor-reg))
(index :scs (unsigned-reg)))
(:info offset)
(:arg-types ,type positive-fixnum (:constant (integer 0 0)))
(:results (result :scs (unsigned-reg) :from (:argument 0)))
(:result-types positive-fixnum)
(:temporary (:sc unsigned-reg :offset ecx-offset) ecx)
(:generator 20
(aver (zerop offset))
(move ecx index)
(inst shr ecx ,bit-shift)
(inst mov result (make-ea-for-vector-data object :index ecx))
(move ecx index)
;; We used to mask ECX for all values of ELEMENT-PER-WORD,
;; but since Intel's documentation says that the chip will
;; mask shift and rotate counts by 31 automatically, we can
;; safely move the masking operation under the protection of
;; this UNLESS in the bit-vector case. --njf, 2006-07-14
,@(unless (= elements-per-word n-word-bits)
`((inst and ecx ,(1- elements-per-word))
(inst shl ecx ,(1- (integer-length bits)))))
(inst shr result :cl)
(inst and result ,(1- (ash 1 bits)))))
(define-vop (,(symbolicate 'data-vector-ref-c-with-offset/ type))
(:translate data-vector-ref-with-offset)
(:policy :fast-safe)
(:args (object :scs (descriptor-reg)))
(:arg-types ,type (:constant index) (:constant (integer 0 0)))
(:info index offset)
(:results (result :scs (unsigned-reg)))
(:result-types positive-fixnum)
(:generator 15
(aver (zerop offset))
(multiple-value-bind (word extra) (floor index ,elements-per-word)
(loadw result object (+ word vector-data-offset)
other-pointer-lowtag)
(unless (zerop extra)
(inst shr result (* extra ,bits)))
(unless (= extra ,(1- elements-per-word))
(inst and result ,(1- (ash 1 bits)))))))
(define-vop (,(symbolicate 'data-vector-set-with-offset/ type))
(:note "inline array store")
(:translate data-vector-set-with-offset)
(:policy :fast-safe)
(:args (object :scs (descriptor-reg) :to (:argument 2))
(index :scs (unsigned-reg) :target ecx)
(value :scs (unsigned-reg immediate) :target result))
(:info offset)
(:arg-types ,type positive-fixnum (:constant (integer 0 0))
positive-fixnum)
(:results (result :scs (unsigned-reg)))
(:result-types positive-fixnum)
(:temporary (:sc unsigned-reg) word-index)
(:temporary (:sc unsigned-reg) old)
(:temporary (:sc unsigned-reg :offset ecx-offset :from (:argument 1)) ecx)
(:generator 25
(aver (zerop offset))
(move word-index index)
(inst shr word-index ,bit-shift)
(inst mov old (make-ea-for-vector-data object :index word-index))
(move ecx index)
;; We used to mask ECX for all values of ELEMENT-PER-WORD,
;; but since Intel's documentation says that the chip will
;; mask shift and rotate counts by 31 automatically, we can
;; safely move the masking operation under the protection of
;; this UNLESS in the bit-vector case. --njf, 2006-07-14
,@(unless (= elements-per-word n-word-bits)
`((inst and ecx ,(1- elements-per-word))
(inst shl ecx ,(1- (integer-length bits)))))
(inst ror old :cl)
(unless (and (sc-is value immediate)
(= (tn-value value) ,(1- (ash 1 bits))))
(inst and old ,(lognot (1- (ash 1 bits)))))
(sc-case value
(immediate
(unless (zerop (tn-value value))
(inst or old (logand (tn-value value) ,(1- (ash 1 bits))))))
(unsigned-reg
(inst or old value)))
(inst rol old :cl)
(inst mov (make-ea-for-vector-data object :index word-index)
old)
(sc-case value
(immediate
(inst mov result (tn-value value)))
(unsigned-reg
(move result value)))))
(define-vop (,(symbolicate 'data-vector-set-c-with-offset/ type))
(:translate data-vector-set-with-offset)
(:policy :fast-safe)
(:args (object :scs (descriptor-reg))
(value :scs (unsigned-reg immediate) :target result))
(:arg-types ,type (:constant index) (:constant (integer 0 0))
positive-fixnum)
(:info index offset)
(:results (result :scs (unsigned-reg)))
(:result-types positive-fixnum)
(:temporary (:sc unsigned-reg :to (:result 0)) old)
(:generator 20
(aver (zerop offset))
(multiple-value-bind (word extra) (floor index ,elements-per-word)
(loadw old object (+ word vector-data-offset) other-pointer-lowtag)
(sc-case value
(immediate
(let* ((value (tn-value value))
(mask ,(1- (ash 1 bits)))
(shift (* extra ,bits)))
(unless (= value mask)
(inst and old (ldb (byte n-word-bits 0)
(lognot (ash mask shift)))))
(unless (zerop value)
(inst or old (ash value shift)))))
(unsigned-reg
(let ((shift (* extra ,bits)))
(unless (zerop shift)
(inst ror old shift))
(inst and old (lognot ,(1- (ash 1 bits))))
(inst or old value)
(unless (zerop shift)
(inst rol old shift)))))
(storew old object (+ word vector-data-offset) other-pointer-lowtag)
(sc-case value
(immediate
(inst mov result (tn-value value)))
(unsigned-reg
(move result value))))))))))
(def-small-data-vector-frobs simple-bit-vector 1)
(def-small-data-vector-frobs simple-array-unsigned-byte-2 2)
(def-small-data-vector-frobs simple-array-unsigned-byte-4 4))
;;; And the float variants.
(defun make-ea-for-float-ref (object index offset element-size
&key (scale 1) (complex-offset 0))
(sc-case index
(immediate
(make-ea :dword :base object
:disp (- (+ (* vector-data-offset n-word-bytes)
(* element-size (+ offset (tn-value index)))
complex-offset)
other-pointer-lowtag)))
(t
(make-ea :dword :base object :index index :scale scale
:disp (- (+ (* vector-data-offset n-word-bytes)
(* element-size offset)
complex-offset)
other-pointer-lowtag)))))
(define-vop (data-vector-ref-with-offset/simple-array-single-float)
(:note "inline array access")
(:translate data-vector-ref-with-offset)
(:policy :fast-safe)
(:args (object :scs (descriptor-reg))
(index :scs (any-reg immediate)))
(:info offset)
(:arg-types simple-array-single-float positive-fixnum
(:constant (constant-displacement other-pointer-lowtag
4 vector-data-offset)))
(:results (value :scs (single-reg)))
(:result-types single-float)
(:generator 5
(with-empty-tn@fp-top(value)
(inst fld (make-ea-for-float-ref object index offset 4)))))
(define-vop (data-vector-set-with-offset/simple-array-single-float)
(:note "inline array store")
(:translate data-vector-set-with-offset)
(:policy :fast-safe)
(:args (object :scs (descriptor-reg))
(index :scs (any-reg immediate))
(value :scs (single-reg) :target result))
(:info offset)
(:arg-types simple-array-single-float positive-fixnum
(:constant (constant-displacement other-pointer-lowtag
4 vector-data-offset))
single-float)
(:results (result :scs (single-reg)))
(:result-types single-float)
(:generator 5
(cond ((zerop (tn-offset value))
;; Value is in ST0.
(inst fst (make-ea-for-float-ref object index offset 4))
(unless (zerop (tn-offset result))
;; Value is in ST0 but not result.
(inst fst result)))
(t
;; Value is not in ST0.
(inst fxch value)
(inst fst (make-ea-for-float-ref object index offset 4))
(cond ((zerop (tn-offset result))
;; The result is in ST0.
(inst fst value))
(t
;; Neither value or result are in ST0
(unless (location= value result)
(inst fst result))
(inst fxch value)))))))
(define-vop (data-vector-ref-with-offset/simple-array-double-float)
(:note "inline array access")
(:translate data-vector-ref-with-offset)
(:policy :fast-safe)
(:args (object :scs (descriptor-reg))
(index :scs (any-reg immediate)))
(:info offset)
(:arg-types simple-array-double-float
positive-fixnum
(:constant (constant-displacement other-pointer-lowtag
8 vector-data-offset)))
(:results (value :scs (double-reg)))
(:result-types double-float)
(:generator 7
(with-empty-tn@fp-top(value)
(inst fldd (make-ea-for-float-ref object index offset 8 :scale 2)))))
(define-vop (data-vector-set-with-offset/simple-array-double-float)
(:note "inline array store")
(:translate data-vector-set-with-offset)
(:policy :fast-safe)
(:args (object :scs (descriptor-reg))
(index :scs (any-reg immediate))
(value :scs (double-reg) :target result))
(:info offset)
(:arg-types simple-array-double-float positive-fixnum
(:constant (constant-displacement other-pointer-lowtag
8 vector-data-offset))
double-float)
(:results (result :scs (double-reg)))
(:result-types double-float)
(:generator 20
(cond ((zerop (tn-offset value))
;; Value is in ST0.
(inst fstd (make-ea-for-float-ref object index offset 8 :scale 2))
(unless (zerop (tn-offset result))
;; Value is in ST0 but not result.
(inst fstd result)))
(t
;; Value is not in ST0.
(inst fxch value)
(inst fstd (make-ea-for-float-ref object index offset 8 :scale 2))
(cond ((zerop (tn-offset result))
;; The result is in ST0.
(inst fstd value))
(t
;; Neither value or result are in ST0
(unless (location= value result)
(inst fstd result))
(inst fxch value)))))))
;;; complex float variants
(define-vop (data-vector-ref-with-offset/simple-array-complex-single-float)
(:note "inline array access")
(:translate data-vector-ref-with-offset)
(:policy :fast-safe)
(:args (object :scs (descriptor-reg))
(index :scs (any-reg immediate)))
(:info offset)
(:arg-types simple-array-complex-single-float positive-fixnum
(:constant (constant-displacement other-pointer-lowtag
8 vector-data-offset)))
(:results (value :scs (complex-single-reg)))
(:result-types complex-single-float)
(:generator 5
(let ((real-tn (complex-single-reg-real-tn value)))
(with-empty-tn@fp-top (real-tn)
(inst fld (make-ea-for-float-ref object index offset 8 :scale 2))))
(let ((imag-tn (complex-single-reg-imag-tn value)))
(with-empty-tn@fp-top (imag-tn)
;; FIXME
(inst fld (make-ea-for-float-ref object index offset 8
:scale 2 :complex-offset 4))))))
(define-vop (data-vector-set-with-offset/simple-array-complex-single-float)
(:note "inline array store")
(:translate data-vector-set-with-offset)
(:policy :fast-safe)
(:args (object :scs (descriptor-reg))
(index :scs (any-reg immediate))
(value :scs (complex-single-reg) :target result))
(:info offset)
(:arg-types simple-array-complex-single-float positive-fixnum
(:constant (constant-displacement other-pointer-lowtag
8 vector-data-offset))
complex-single-float)
(:results (result :scs (complex-single-reg)))
(:result-types complex-single-float)
(:generator 5
(let ((value-real (complex-single-reg-real-tn value))
(result-real (complex-single-reg-real-tn result)))
(cond ((zerop (tn-offset value-real))
;; Value is in ST0.
(inst fst (make-ea-for-float-ref object index offset 8 :scale 2))
(unless (zerop (tn-offset result-real))
;; Value is in ST0 but not result.
(inst fst result-real)))
(t
;; Value is not in ST0.
(inst fxch value-real)
(inst fst (make-ea-for-float-ref object index offset 8 :scale 2))
(cond ((zerop (tn-offset result-real))
;; The result is in ST0.
(inst fst value-real))
(t
;; Neither value or result are in ST0
(unless (location= value-real result-real)
(inst fst result-real))
(inst fxch value-real))))))
(let ((value-imag (complex-single-reg-imag-tn value))
(result-imag (complex-single-reg-imag-tn result)))
(inst fxch value-imag)
(inst fst (make-ea-for-float-ref object index offset 8
:scale 2 :complex-offset 4))
(unless (location= value-imag result-imag)
(inst fst result-imag))
(inst fxch value-imag))))
(define-vop (data-vector-ref-with-offset/simple-array-complex-double-float)
(:note "inline array access")
(:translate data-vector-ref-with-offset)
(:policy :fast-safe)
(:args (object :scs (descriptor-reg))
(index :scs (any-reg immediate)))
(:info offset)
(:arg-types simple-array-complex-double-float positive-fixnum
(:constant (constant-displacement other-pointer-lowtag
16 vector-data-offset)))
(:results (value :scs (complex-double-reg)))
(:result-types complex-double-float)
(:generator 7
(let ((real-tn (complex-double-reg-real-tn value)))
(with-empty-tn@fp-top (real-tn)
(inst fldd (make-ea-for-float-ref object index offset 16 :scale 4)))
(let ((imag-tn (complex-double-reg-imag-tn value)))
(with-empty-tn@fp-top (imag-tn)
(inst fldd (make-ea-for-float-ref object index offset 16
:scale 4 :complex-offset 8)))))))
(define-vop (data-vector-set-with-offset/simple-array-complex-double-float)
(:note "inline array store")
(:translate data-vector-set-with-offset)
(:policy :fast-safe)
(:args (object :scs (descriptor-reg))
(index :scs (any-reg immediate))
(value :scs (complex-double-reg) :target result))
(:info offset)
(:arg-types simple-array-complex-double-float positive-fixnum
(:constant (constant-displacement other-pointer-lowtag
16 vector-data-offset))
complex-double-float)
(:results (result :scs (complex-double-reg)))
(:result-types complex-double-float)
(:generator 20
(let ((value-real (complex-double-reg-real-tn value))
(result-real (complex-double-reg-real-tn result)))
(cond ((zerop (tn-offset value-real))
;; Value is in ST0.
(inst fstd (make-ea-for-float-ref object index offset 16
:scale 4))
(unless (zerop (tn-offset result-real))
;; Value is in ST0 but not result.
(inst fstd result-real)))
(t
;; Value is not in ST0.
(inst fxch value-real)
(inst fstd (make-ea-for-float-ref object index offset 16
:scale 4))
(cond ((zerop (tn-offset result-real))
;; The result is in ST0.
(inst fstd value-real))
(t
;; Neither value or result are in ST0
(unless (location= value-real result-real)
(inst fstd result-real))
(inst fxch value-real))))))
(let ((value-imag (complex-double-reg-imag-tn value))
(result-imag (complex-double-reg-imag-tn result)))
(inst fxch value-imag)
(inst fstd (make-ea-for-float-ref object index offset 16
:scale 4 :complex-offset 8))
(unless (location= value-imag result-imag)
(inst fstd result-imag))
(inst fxch value-imag))))
;;; {un,}signed-byte-8, simple-base-string
(macrolet ((define-data-vector-frobs (ptype element-type ref-inst
8-bit-tns-p &rest scs)
`(progn
(define-vop (,(symbolicate "DATA-VECTOR-REF-WITH-OFFSET/" ptype))
(:translate data-vector-ref-with-offset)
(:policy :fast-safe)
(:args (object :scs (descriptor-reg))
(index :scs (unsigned-reg immediate)))
(:info offset)
(:arg-types ,ptype positive-fixnum
(:constant (constant-displacement other-pointer-lowtag
1 vector-data-offset)))
(:results (value :scs ,scs))
(:result-types ,element-type)
(:generator 5
(sc-case index
(immediate
(inst ,ref-inst value (make-ea-for-vector-data
object :size :byte
:offset (+ (tn-value index) offset))))
(t
(inst ,ref-inst value
(make-ea-for-vector-data object :size :byte
:index index :offset offset))))))
(define-vop (,(symbolicate "DATA-VECTOR-SET-WITH-OFFSET/" ptype))
(:translate data-vector-set-with-offset)
(:policy :fast-safe)
(:args (object :scs (descriptor-reg) :to (:eval 0))
(index :scs (unsigned-reg immediate) :to (:eval 0))
(value :scs ,scs ,@(unless 8-bit-tns-p
'(:target eax))))
(:info offset)
(:arg-types ,ptype positive-fixnum
(:constant (constant-displacement other-pointer-lowtag
1 vector-data-offset))
,element-type)
,@(unless 8-bit-tns-p
'((:temporary (:sc unsigned-reg :offset eax-offset :target result
:from (:argument 2) :to (:result 0))
eax)))
(:results (result :scs ,scs))
(:result-types ,element-type)
(:generator 5
,@(unless 8-bit-tns-p
'((move eax value)))
(sc-case index
(immediate
(inst mov (make-ea-for-vector-data
object :size :byte :offset (+ (tn-value index) offset))
,(if 8-bit-tns-p
'value
'al-tn)))
(t
(inst mov (make-ea-for-vector-data object :size :byte
:index index :offset offset)
,(if 8-bit-tns-p
'value
'al-tn))))
(move result ,(if 8-bit-tns-p
'value
'eax)))))))
(define-data-vector-frobs simple-array-unsigned-byte-7 positive-fixnum
movzx nil unsigned-reg signed-reg)
(define-data-vector-frobs simple-array-unsigned-byte-8 positive-fixnum
movzx nil unsigned-reg signed-reg)
(define-data-vector-frobs simple-array-signed-byte-8 tagged-num
movsx nil signed-reg)
(define-data-vector-frobs simple-base-string character
#!+sb-unicode movzx #!-sb-unicode mov
#!+sb-unicode nil #!-sb-unicode t character-reg))
;;; {un,}signed-byte-16
(macrolet ((define-data-vector-frobs (ptype element-type ref-inst &rest scs)
`(progn
(define-vop (,(symbolicate "DATA-VECTOR-REF-WITH-OFFSET/" ptype))
(:translate data-vector-ref-with-offset)
(:policy :fast-safe)
(:args (object :scs (descriptor-reg))
(index :scs (unsigned-reg immediate)))
(:info offset)
(:arg-types ,ptype positive-fixnum
(:constant (constant-displacement other-pointer-lowtag
2 vector-data-offset)))
(:results (value :scs ,scs))
(:result-types ,element-type)
(:generator 5
(sc-case index
(immediate
(inst ,ref-inst value
(make-ea-for-vector-data object :size :word
:offset (+ (tn-value index) offset))))
(t
(inst ,ref-inst value
(make-ea-for-vector-data object :size :word
:index index :offset offset))))))
(define-vop (,(symbolicate "DATA-VECTOR-SET-WITH-OFFSET/" ptype))
(:translate data-vector-set-with-offset)
(:policy :fast-safe)
(:args (object :scs (descriptor-reg) :to (:eval 0))
(index :scs (unsigned-reg immediate) :to (:eval 0))
(value :scs ,scs :target eax))
(:info offset)
(:arg-types ,ptype positive-fixnum
(:constant (constant-displacement other-pointer-lowtag
2 vector-data-offset))
,element-type)
(:temporary (:sc unsigned-reg :offset eax-offset :target result
:from (:argument 2) :to (:result 0))
eax)
(:results (result :scs ,scs))
(:result-types ,element-type)
(:generator 5
(move eax value)
(sc-case index
(immediate
(inst mov (make-ea-for-vector-data
object :size :word :offset (+ (tn-value index) offset))
ax-tn))
(t
(inst mov (make-ea-for-vector-data object :size :word
:index index :offset offset)
ax-tn)))
(move result eax))))))
(define-data-vector-frobs simple-array-unsigned-byte-15 positive-fixnum
movzx unsigned-reg signed-reg)
(define-data-vector-frobs simple-array-unsigned-byte-16 positive-fixnum
movzx unsigned-reg signed-reg)
(define-data-vector-frobs simple-array-signed-byte-16 tagged-num
movsx signed-reg))
;;; These vops are useful for accessing the bits of a vector
;;; irrespective of what type of vector it is.
(define-full-reffer+offset raw-bits-with-offset * 0 other-pointer-lowtag (unsigned-reg)
unsigned-num %raw-bits-with-offset)
(define-full-setter+offset set-raw-bits-with-offset * 0 other-pointer-lowtag (unsigned-reg)
unsigned-num %set-raw-bits-with-offset)
;;;; miscellaneous array VOPs
(define-vop (get-vector-subtype get-header-data))
(define-vop (set-vector-subtype set-header-data))