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;;;; the VM definition of various primitive memory access VOPs for
;;;; HPPA
;;;; 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")
;;;; Data object ref/set stuff.
(define-vop (slot)
(:args (object :scs (descriptor-reg)))
(:info name offset lowtag)
(:ignore name)
(:results (result :scs (descriptor-reg any-reg)))
(:generator 1
(loadw result object offset lowtag)))
(define-vop (set-slot)
(:args (object :scs (descriptor-reg))
(value :scs (descriptor-reg any-reg null zero)))
(:info name offset lowtag)
(:ignore name)
(:results)
(:generator 1
(storew value object offset lowtag)))
(define-vop (init-slot set-slot))
;;;; Symbol hacking VOPs:
;;; The compiler likes to be able to directly SET symbols.
(define-vop (set cell-set)
(:variant symbol-value-slot other-pointer-lowtag))
;;; Do a cell ref with an error check for being unbound.
(define-vop (checked-cell-ref)
(:args (object :scs (descriptor-reg) :target obj-temp))
(:results (value :scs (descriptor-reg any-reg)))
(:policy :fast-safe)
(:vop-var vop)
(:save-p :compute-only)
(:temporary (:scs (non-descriptor-reg)) temp)
(:temporary (:scs (descriptor-reg) :from (:argument 0)) obj-temp))
;;; With Symbol-Value, we check that the value isn't the trap object. So
;;; Symbol-Value of NIL is NIL.
(define-vop (symbol-value checked-cell-ref)
(:translate symbol-value)
(:generator 9
(move object obj-temp)
(loadw value obj-temp symbol-value-slot other-pointer-lowtag)
(let ((err-lab (generate-error-code vop unbound-symbol-error obj-temp)))
(inst li unbound-marker-widetag temp)
(inst bc := nil value temp err-lab))))
;;; Like CHECKED-CELL-REF, only we are a predicate to see if the cell is bound.
(define-vop (boundp-frob)
(:args (object :scs (descriptor-reg)))
(:conditional)
(:info target not-p)
(:policy :fast-safe)
(:temporary (:scs (descriptor-reg)) value)
(:temporary (:scs (non-descriptor-reg)) temp))
(define-vop (boundp boundp-frob)
(:translate boundp)
(:generator 9
(loadw value object symbol-value-slot other-pointer-lowtag)
(inst li unbound-marker-widetag temp)
(inst bc :<> not-p value temp target)))
(define-vop (fast-symbol-value cell-ref)
(:variant symbol-value-slot other-pointer-lowtag)
(:policy :fast)
(:translate symbol-value))
(define-vop (symbol-hash)
(:policy :fast-safe)
(:translate symbol-hash)
(:args (symbol :scs (descriptor-reg)))
(:temporary (:scs (non-descriptor-reg)) temp)
(:results (res :scs (any-reg)))
(:result-types positive-fixnum)
(:generator 2
(loadw temp symbol symbol-hash-slot other-pointer-lowtag)
(inst dep 0 31 n-fixnum-tag-bits temp)
;; we must go through an temporary to avoid gc
(move temp res)))
;;; On unithreaded builds these are just copies of the non-global versions.
(define-vop (%set-symbol-global-value set))
(define-vop (symbol-global-value symbol-value)
(:translate symbol-global-value))
(define-vop (fast-symbol-global-value fast-symbol-value)
(:translate symbol-global-value))
;;;; Fdefinition (fdefn) objects.
(define-vop (fdefn-fun cell-ref)
(:variant fdefn-fun-slot other-pointer-lowtag))
(define-vop (safe-fdefn-fun)
(:args (object :scs (descriptor-reg) :target obj-temp))
(:results (value :scs (descriptor-reg any-reg)))
(:vop-var vop)
(:save-p :compute-only)
(:temporary (:scs (descriptor-reg) :from (:argument 0)) obj-temp)
(:generator 10
(move obj-temp object)
(loadw value obj-temp fdefn-fun-slot other-pointer-lowtag)
(let ((err-lab (generate-error-code vop undefined-fun-error obj-temp)))
(inst bc := nil value null-tn err-lab))))
(define-vop (set-fdefn-fun)
(:policy :fast-safe)
(:translate (setf fdefn-fun))
(:args (function :scs (descriptor-reg) :target result)
(fdefn :scs (descriptor-reg)))
(:temporary (:scs (interior-reg)) lip)
(:temporary (:scs (non-descriptor-reg)) type)
(:results (result :scs (descriptor-reg)))
(:generator 38
(let ((normal-fn (gen-label)))
(load-type type function (- fun-pointer-lowtag))
(inst addi (- simple-fun-header-widetag) type type)
(inst comb := type zero-tn normal-fn)
(inst addi (- (ash simple-fun-code-offset word-shift) fun-pointer-lowtag)
function lip)
(inst li (make-fixup 'closure-tramp :assembly-routine) lip)
(emit-label normal-fn)
(storew function fdefn fdefn-fun-slot other-pointer-lowtag)
(storew lip fdefn fdefn-raw-addr-slot other-pointer-lowtag)
(move function result))))
(define-vop (fdefn-makunbound)
(:policy :fast-safe)
(:translate fdefn-makunbound)
(:args (fdefn :scs (descriptor-reg) :target result))
(:temporary (:scs (non-descriptor-reg)) temp)
(:results (result :scs (descriptor-reg)))
(:generator 38
(storew null-tn fdefn fdefn-fun-slot other-pointer-lowtag)
(inst li (make-fixup "undefined_tramp" :foreign) temp)
(storew temp fdefn fdefn-raw-addr-slot other-pointer-lowtag)
(move fdefn result)))
;;;; Binding and Unbinding.
;;; BIND -- Establish VAL as a binding for SYMBOL. Save the old value and
;;; the symbol on the binding stack and stuff the new value into the
;;; symbol.
;;;
;;; See the "Chapter 9: Specials" of the SBCL Internals Manual.
(define-vop (bind)
(:args (val :scs (any-reg descriptor-reg))
(symbol :scs (descriptor-reg)))
(:temporary (:scs (descriptor-reg)) temp)
(:generator 5
(loadw temp symbol symbol-value-slot other-pointer-lowtag)
(inst addi (* 2 n-word-bytes) bsp-tn bsp-tn)
(storew temp bsp-tn (- binding-value-slot binding-size))
(storew symbol bsp-tn (- binding-symbol-slot binding-size))
(storew val symbol symbol-value-slot other-pointer-lowtag)))
(define-vop (unbind)
(:temporary (:scs (descriptor-reg)) symbol value)
(:generator 0
(loadw symbol bsp-tn (- binding-symbol-slot binding-size))
(loadw value bsp-tn (- binding-value-slot binding-size))
(storew value symbol symbol-value-slot other-pointer-lowtag)
(storew zero-tn bsp-tn (- binding-symbol-slot binding-size))
(storew zero-tn bsp-tn (- binding-value-slot binding-size))
(inst addi (- (* 2 n-word-bytes)) bsp-tn bsp-tn)))
(define-vop (unbind-to-here)
(:args (arg :scs (descriptor-reg any-reg) :target where))
(:temporary (:scs (any-reg) :from (:argument 0)) where)
(:temporary (:scs (descriptor-reg)) symbol value)
(:generator 0
(let ((loop (gen-label))
(skip (gen-label))
(done (gen-label)))
(move arg where)
(inst comb := where bsp-tn done :nullify t)
(emit-label loop)
(loadw symbol bsp-tn (- binding-symbol-slot binding-size))
(inst comb := symbol zero-tn skip)
(loadw value bsp-tn (- binding-value-slot binding-size))
(storew value symbol symbol-value-slot other-pointer-lowtag)
(storew zero-tn bsp-tn (- binding-symbol-slot binding-size))
(emit-label skip)
(storew zero-tn bsp-tn (- binding-value-slot binding-size))
(inst addi (* -2 n-word-bytes) bsp-tn bsp-tn)
(inst comb :<> where bsp-tn loop)
(inst nop)
(emit-label done))))
;;;; Closure indexing.
(define-full-reffer closure-index-ref *
closure-info-offset fun-pointer-lowtag
(descriptor-reg any-reg) * %closure-index-ref)
(define-full-setter set-funcallable-instance-info *
funcallable-instance-info-offset fun-pointer-lowtag
(descriptor-reg any-reg null zero) * %set-funcallable-instance-info)
(define-full-reffer funcallable-instance-info *
funcallable-instance-info-offset fun-pointer-lowtag
(descriptor-reg any-reg) * %funcallable-instance-info)
(define-vop (closure-ref slot-ref)
(:variant closure-info-offset fun-pointer-lowtag))
(define-vop (closure-init slot-set)
(:variant closure-info-offset fun-pointer-lowtag))
(define-vop (closure-init-from-fp)
(:args (object :scs (descriptor-reg)))
(:info offset)
(:generator 4
(storew cfp-tn object (+ closure-info-offset offset) fun-pointer-lowtag)))
;;;; Value Cell hackery.
(define-vop (value-cell-ref cell-ref)
(:variant value-cell-value-slot other-pointer-lowtag))
(define-vop (value-cell-set cell-set)
(:variant value-cell-value-slot other-pointer-lowtag))
;;;; Instance hackery:
(define-vop (instance-length)
(:policy :fast-safe)
(:translate %instance-length)
(:args (struct :scs (descriptor-reg)))
(:results (res :scs (unsigned-reg)))
(:result-types positive-fixnum)
(:generator 4
(loadw res struct 0 instance-pointer-lowtag)
(inst srl res n-widetag-bits res)))
(define-full-reffer instance-index-ref * instance-slots-offset
instance-pointer-lowtag (descriptor-reg any-reg) * %instance-ref)
(define-full-setter instance-index-set * instance-slots-offset
instance-pointer-lowtag (descriptor-reg any-reg null zero) * %instance-set)
;;;; Code object frobbing.
(define-full-reffer code-header-ref * 0 other-pointer-lowtag
(descriptor-reg any-reg) * code-header-ref)
(define-full-setter code-header-set * 0 other-pointer-lowtag
(descriptor-reg any-reg null zero) * code-header-set)
;;;; raw instance slot accessors
(macrolet ((lfloat (imm base dst &key side)
`(cond
((< ,imm (ash 1 4))
(inst flds ,imm ,base ,dst :side ,side))
((and (< ,imm (ash 1 13))
(> ,imm 0))
(progn
(inst li ,imm offset)
(inst fldx offset ,base ,dst :side ,side)))
(t
(error "inst fldx cant handle offset-register loaded with immediate ~s" ,imm))))
(sfloat (src imm base &key side)
`(cond
((< ,imm (ash 1 4))
(inst fsts ,src ,imm ,base :side ,side))
((and (< ,imm (ash 1 13))
(> ,imm 0))
(progn
(inst ldo ,imm zero-tn offset)
(inst fstx ,src offset ,base :side ,side)))
(t
(error "inst fstx cant handle offset-register loaded with immediate ~s" ,imm))))
(raw-instance ((type inc-offset-by set &optional complex)
&body body)
(let ((name (symbolicate "RAW-INSTANCE-"
(if set "SET/" "REF/")
(if (eq type 'unsigned)
"WORD"
(or complex type))))
(type-num (cond
((eq type 'single)
(if complex 'complex-single-float
'single-float))
((eq type 'double)
(if complex 'complex-double-float
'double-float))
(t (symbolicate type "-NUM"))))
(type-reg (symbolicate (or complex type) "-REG")))
`(define-vop (,name)
(:translate ,(symbolicate "%" name))
(:policy :fast-safe)
(:args (object :scs (descriptor-reg))
(index :scs (any-reg))
,@(if set
`((value :scs (,type-reg) :target result))))
(:arg-types * positive-fixnum ,@(if set `(,type-num)))
(:results (,(if set 'result 'value) :scs (,type-reg)))
(:temporary (:scs (non-descriptor-reg)) offset)
(:temporary (:scs (interior-reg)) lip)
(:result-types ,type-num)
(:generator 5
(loadw offset object 0 instance-pointer-lowtag)
(inst srl offset n-widetag-bits offset)
(inst sll offset 2 offset)
(inst sub offset index offset)
(inst addi ,(* inc-offset-by n-word-bytes)
offset offset)
(inst add offset object lip)
,@body)))))
(raw-instance (unsigned -1 nil)
(inst ldw (- (* instance-slots-offset n-word-bytes)
instance-pointer-lowtag) lip value))
(raw-instance (unsigned -1 t)
(inst stw value (- (* instance-slots-offset n-word-bytes)
instance-pointer-lowtag) lip)
(move value result))
(raw-instance (single -1 nil)
(let ((io (- (* instance-slots-offset n-word-bytes)
instance-pointer-lowtag)))
(lfloat io lip value)))
(raw-instance (single -1 t)
(let ((io (- (* instance-slots-offset n-word-bytes)
instance-pointer-lowtag)))
(sfloat value io lip))
(unless (location= result value)
(inst funop :copy value result)))
(raw-instance (double -2 nil)
(let ((io (- (* instance-slots-offset n-word-bytes)
instance-pointer-lowtag)))
(lfloat io lip value)))
(raw-instance (double -2 t)
(let ((io (- (* instance-slots-offset n-word-bytes)
instance-pointer-lowtag)))
(sfloat value io lip :side 0))
(let ((io (- (* (1+ instance-slots-offset) n-word-bytes)
instance-pointer-lowtag)))
(sfloat value io lip :side 1))
(unless (location= result value)
(inst funop :copy value result)))
(raw-instance (single -2 nil complex-single)
(let ((io (- (* instance-slots-offset n-word-bytes)
instance-pointer-lowtag)))
(lfloat io lip (complex-single-reg-real-tn value)))
(let ((io (- (* (1+ instance-slots-offset) n-word-bytes)
instance-pointer-lowtag)))
(lfloat io lip (complex-single-reg-imag-tn value))))
(raw-instance (single -2 t complex-single)
(let ((value-real (complex-single-reg-real-tn value))
(result-real (complex-single-reg-real-tn result))
(io (- (* instance-slots-offset n-word-bytes)
instance-pointer-lowtag)))
(sfloat value-real io lip)
(unless (location= result-real value-real)
(inst funop :copy value-real result-real)))
(let ((value-imag (complex-single-reg-imag-tn value))
(result-imag (complex-single-reg-imag-tn result))
(io (- (* (1+ instance-slots-offset) n-word-bytes)
instance-pointer-lowtag)))
(sfloat value-imag io lip)
(unless (location= result-imag value-imag)
(inst funop :copy value-imag result-imag))))
(raw-instance (double -4 nil complex-double)
(let ((r0 (- (* instance-slots-offset n-word-bytes)
instance-pointer-lowtag))
(r1 (- (* (+ instance-slots-offset 1) n-word-bytes)
instance-pointer-lowtag))
(i0 (- (* (+ instance-slots-offset 2) n-word-bytes)
instance-pointer-lowtag))
(i1 (- (* (+ instance-slots-offset 3) n-word-bytes)
instance-pointer-lowtag)))
(lfloat r0 lip (complex-double-reg-real-tn value) :side 0)
(lfloat r1 lip (complex-double-reg-real-tn value) :side 1)
(lfloat i0 lip (complex-double-reg-imag-tn value) :side 0)
(lfloat i1 lip (complex-double-reg-imag-tn value) :side 1)))
(raw-instance (double -4 t complex-double)
(let ((value-real (complex-double-reg-real-tn value))
(result-real (complex-double-reg-real-tn result))
(value-imag (complex-double-reg-imag-tn value))
(result-imag (complex-double-reg-imag-tn result))
(r0 (- (* instance-slots-offset n-word-bytes)
instance-pointer-lowtag))
(r1 (- (* (+ instance-slots-offset 1) n-word-bytes)
instance-pointer-lowtag))
(i0 (- (* (+ instance-slots-offset 2) n-word-bytes)
instance-pointer-lowtag))
(i1 (- (* (+ instance-slots-offset 3) n-word-bytes)
instance-pointer-lowtag)))
(sfloat value-real r0 lip :side 0)
(sfloat value-real r1 lip :side 1)
(sfloat value-imag i0 lip :side 0)
(sfloat value-imag i1 lip :side 1)
(unless (location= result-real value-real)
(inst funop :copy value-real result-real))
(unless (location= result-imag value-imag)
(inst funop :copy value-imag result-imag)))))