4 ;;;; Data object ref/set stuff.
7 (:args (object :scs (descriptor-reg)))
8 (:info name offset lowtag)
10 (:results (result :scs (descriptor-reg any-reg)))
12 (loadw result object offset lowtag)))
14 (define-vop (set-slot)
15 (:args (object :scs (descriptor-reg))
16 (value :scs (descriptor-reg any-reg)))
17 (:info name offset lowtag)
21 (storew value object offset lowtag)))
25 ;;;; Symbol hacking VOPs:
27 ;;; The compiler likes to be able to directly SET symbols.
29 (define-vop (set cell-set)
30 (:variant symbol-value-slot other-pointer-lowtag))
32 ;;; Do a cell ref with an error check for being unbound.
34 (define-vop (checked-cell-ref)
35 (:args (object :scs (descriptor-reg) :target obj-temp))
36 (:results (value :scs (descriptor-reg any-reg)))
39 (:save-p :compute-only)
40 (:temporary (:type random :scs (non-descriptor-reg)) temp)
41 (:temporary (:scs (descriptor-reg) :from (:argument 0)) obj-temp))
43 ;;; With Symbol-Value, we check that the value isn't the trap object. So
44 ;;; Symbol-Value of NIL is NIL.
46 (define-vop (symbol-value checked-cell-ref)
47 (:translate symbol-value)
49 (move object obj-temp)
50 (loadw value obj-temp symbol-value-slot other-pointer-lowtag)
51 (let ((err-lab (generate-error-code vop unbound-symbol-error obj-temp)))
52 (inst li unbound-marker-widetag temp)
53 (inst bc := nil value temp err-lab))))
55 ;;; Like CHECKED-CELL-REF, only we are a predicate to see if the cell is bound.
56 (define-vop (boundp-frob)
57 (:args (object :scs (descriptor-reg)))
61 (:temporary (:scs (descriptor-reg)) value)
62 (:temporary (:type random :scs (non-descriptor-reg)) temp))
64 (define-vop (boundp boundp-frob)
67 (loadw value object symbol-value-slot other-pointer-lowtag)
68 (inst li unbound-marker-widetag temp)
69 (inst bc :<> not-p value temp target)))
71 (define-vop (fast-symbol-value cell-ref)
72 (:variant symbol-value-slot other-pointer-lowtag)
74 (:translate symbol-value))
78 ;;;; Fdefinition (fdefn) objects.
80 (define-vop (fdefn-fun cell-ref)
81 (:variant fdefn-fun-slot other-pointer-lowtag))
83 (define-vop (safe-fdefn-fun)
84 (:args (object :scs (descriptor-reg) :target obj-temp))
85 (:results (value :scs (descriptor-reg any-reg)))
87 (:save-p :compute-only)
88 (:temporary (:scs (descriptor-reg) :from (:argument 0)) obj-temp)
90 (move obj-temp object)
91 (loadw value obj-temp fdefn-fun-slot other-pointer-lowtag)
92 (let ((err-lab (generate-error-code vop undefined-fun-error obj-temp)))
93 (inst bc := nil value null-tn err-lab))))
95 (define-vop (set-fdefn-fun)
97 (:translate (setf fdefn-fun))
98 (:args (function :scs (descriptor-reg) :target result)
99 (fdefn :scs (descriptor-reg)))
100 (:temporary (:scs (interior-reg)) lip)
101 (:temporary (:scs (non-descriptor-reg)) type)
102 (:results (result :scs (descriptor-reg)))
104 (load-type type function (- fun-pointer-lowtag))
105 (inst addi (- simple-fun-header-widetag) type type)
106 (inst comb := type zero-tn normal-fn)
107 (inst addi (- (ash simple-fun-code-offset word-shift) fun-pointer-lowtag)
109 (inst li (make-fixup "closure_tramp" :foreign) lip)
111 (storew function fdefn fdefn-fun-slot other-pointer-lowtag)
112 (storew lip fdefn fdefn-raw-addr-slot other-pointer-lowtag)
113 (move function result)))
115 (define-vop (fdefn-makunbound)
117 (:translate fdefn-makunbound)
118 (:args (fdefn :scs (descriptor-reg) :target result))
119 (:temporary (:scs (non-descriptor-reg)) temp)
120 (:results (result :scs (descriptor-reg)))
122 (storew null-tn fdefn fdefn-fun-slot other-pointer-lowtag)
123 (inst li (make-fixup "undefined_tramp" :foreign) temp)
124 (storew temp fdefn fdefn-raw-addr-slot other-pointer-lowtag)
125 (move fdefn result)))
129 ;;;; Binding and Unbinding.
131 ;;; BIND -- Establish VAL as a binding for SYMBOL. Save the old value and
132 ;;; the symbol on the binding stack and stuff the new value into the
136 (:args (val :scs (any-reg descriptor-reg))
137 (symbol :scs (descriptor-reg)))
138 (:temporary (:scs (descriptor-reg)) temp)
140 (loadw temp symbol symbol-value-slot other-pointer-lowtag)
141 (inst addi (* binding-size n-word-bytes) bsp-tn bsp-tn)
142 (storew temp bsp-tn (- binding-value-slot binding-size))
143 (storew symbol bsp-tn (- binding-symbol-slot binding-size))
144 (storew val symbol symbol-value-slot other-pointer-lowtag)))
147 (:temporary (:scs (descriptor-reg)) symbol value)
149 (loadw symbol bsp-tn (- binding-symbol-slot binding-size))
150 (loadw value bsp-tn (- binding-value-slot binding-size))
151 (storew value symbol symbol-value-slot other-pointer-lowtag)
152 (storew zero-tn bsp-tn (- binding-symbol-slot binding-size))
153 (inst addi (- (* binding-size n-word-bytes)) bsp-tn bsp-tn)))
155 (define-vop (unbind-to-here)
156 (:args (where :scs (descriptor-reg any-reg)))
157 (:temporary (:scs (descriptor-reg)) symbol value)
159 (inst comb := where bsp-tn done :nullify t)
160 (loadw symbol bsp-tn (- binding-symbol-slot binding-size))
163 (inst comb := symbol zero-tn skip)
164 (loadw value bsp-tn (- binding-value-slot binding-size))
165 (storew value symbol symbol-value-slot other-pointer-lowtag)
166 (storew zero-tn bsp-tn (- binding-symbol-slot binding-size))
169 (inst addi (* -2 n-word-bytes) bsp-tn bsp-tn)
170 (inst comb :<> where bsp-tn loop :nullify t)
171 (loadw symbol bsp-tn (- binding-symbol-slot binding-size))
177 ;;;; Closure indexing.
179 (define-full-reffer closure-index-ref *
180 closure-info-offset fun-pointer-lowtag
181 (descriptor-reg any-reg) * %closure-index-ref)
183 (define-full-setter set-funcallable-instance-info *
184 funcallable-instance-info-offset fun-pointer-lowtag
185 (descriptor-reg any-reg) * %set-funcallable-instance-info)
187 (define-full-reffer funcallable-instance-info *
188 funcallable-instance-info-offset fun-pointer-lowtag
189 (descriptor-reg any-reg) * %funcallable-instance-info)
191 (define-vop (funcallable-instance-lexenv cell-ref)
192 (:variant funcallable-instance-lexenv-slot fun-pointer-lowtag))
195 (define-vop (closure-ref slot-ref)
196 (:variant closure-info-offset fun-pointer-lowtag))
198 (define-vop (closure-init slot-set)
199 (:variant closure-info-offset fun-pointer-lowtag))
203 ;;;; Value Cell hackery.
205 (define-vop (value-cell-ref cell-ref)
206 (:variant value-cell-value-slot other-pointer-lowtag))
208 (define-vop (value-cell-set cell-set)
209 (:variant value-cell-value-slot other-pointer-lowtag))
213 ;;;; Instance hackery:
215 (define-vop (instance-length)
217 (:translate %instance-length)
218 (:args (struct :scs (descriptor-reg)))
219 (:results (res :scs (unsigned-reg)))
220 (:result-types positive-fixnum)
222 (loadw res struct 0 instance-pointer-lowtag)
223 (inst srl res n-widetag-bits res)))
225 (define-vop (instance-ref slot-ref)
226 (:variant instance-slots-offset instance-pointer-lowtag)
228 (:translate %instance-ref)
229 (:arg-types instance (:constant index)))
231 #+nil ; As per usual (cf sbcl-devel discussion about this VOP which
232 ; appears to return no values)
233 (define-vop (instance-set slot-set)
235 (:translate %instance-set)
236 (:variant instance-slots-offset instance-pointer-lowtag)
237 (:arg-types instance (:constant index) *))
239 (define-full-reffer instance-index-ref * instance-slots-offset
240 instance-pointer-lowtag (descriptor-reg any-reg) * %instance-ref)
242 (define-full-setter instance-index-set * instance-slots-offset
243 instance-pointer-lowtag (descriptor-reg any-reg) * %instance-set)
247 ;;;; Code object frobbing.
249 (define-full-reffer code-header-ref * 0 other-pointer-lowtag
250 (descriptor-reg any-reg) * code-header-ref)
252 (define-full-setter code-header-set * 0 other-pointer-lowtag
253 (descriptor-reg any-reg) * code-header-set)