3 ;;; Written by Rob MacLachlan
5 ;;; Converted by William Lott.
11 ;;;; Data object ref/set stuff.
14 (:args (object :scs (descriptor-reg)))
15 (:info name offset lowtag)
17 (:results (result :scs (descriptor-reg any-reg)))
19 (loadw result object offset lowtag)))
21 (define-vop (set-slot)
22 (:args (object :scs (descriptor-reg))
23 (value :scs (descriptor-reg any-reg)))
24 (:info name offset lowtag)
28 (storew value object offset lowtag)))
32 ;;;; Symbol hacking VOPs:
34 ;;; The compiler likes to be able to directly SET symbols.
36 (define-vop (set cell-set)
37 (:variant symbol-value-slot other-pointer-lowtag))
39 ;;; Do a cell ref with an error check for being unbound.
41 (define-vop (checked-cell-ref)
42 (:args (object :scs (descriptor-reg) :target obj-temp))
43 (:results (value :scs (descriptor-reg any-reg)))
46 (:save-p :compute-only)
47 (:temporary (:scs (descriptor-reg) :from (:argument 0)) obj-temp))
49 ;;; With Symbol-Value, we check that the value isn't the trap object. So
50 ;;; Symbol-Value of NIL is NIL.
52 (define-vop (symbol-value checked-cell-ref)
53 (:translate symbol-value)
55 (move obj-temp object)
56 (loadw value obj-temp sb!vm:symbol-value-slot sb!vm:other-pointer-lowtag)
57 (let ((err-lab (generate-error-code vop unbound-symbol-error obj-temp)))
58 (inst cmpwi value sb!vm:unbound-marker-widetag)
61 ;;; Like CHECKED-CELL-REF, only we are a predicate to see if the cell is bound.
62 (define-vop (boundp-frob)
63 (:args (object :scs (descriptor-reg)))
67 (:temporary (:scs (descriptor-reg)) value))
69 (define-vop (boundp boundp-frob)
72 (loadw value object sb!vm:symbol-value-slot sb!vm:other-pointer-lowtag)
73 (inst cmpwi value sb!vm:unbound-marker-widetag)
74 (inst b? (if not-p :eq :ne) target)))
76 (define-vop (fast-symbol-value cell-ref)
77 (:variant sb!vm:symbol-value-slot sb!vm:other-pointer-lowtag)
79 (:translate symbol-value))
82 ;;;; Fdefinition (fdefn) objects.
84 (define-vop (fdefn-fun cell-ref)
85 (:variant fdefn-fun-slot other-pointer-lowtag))
87 (define-vop (safe-fdefn-fun)
88 (:args (object :scs (descriptor-reg) :target obj-temp))
89 (:results (value :scs (descriptor-reg any-reg)))
91 (:save-p :compute-only)
92 (:temporary (:scs (descriptor-reg) :from (:argument 0)) obj-temp)
94 (move obj-temp object)
95 (loadw value obj-temp fdefn-fun-slot other-pointer-lowtag)
96 (inst cmpw value null-tn)
97 (let ((err-lab (generate-error-code vop undefined-fun-error obj-temp)))
100 (define-vop (set-fdefn-fun)
102 (:translate (setf fdefn-fun))
103 (:args (function :scs (descriptor-reg) :target result)
104 (fdefn :scs (descriptor-reg)))
105 (:temporary (:scs (interior-reg)) lip)
106 (:temporary (:scs (non-descriptor-reg)) type)
107 (:results (result :scs (descriptor-reg)))
109 (let ((normal-fn (gen-label)))
110 (load-type type function (- fun-pointer-lowtag))
111 (inst cmpwi type simple-fun-header-widetag)
112 ;;(inst mr lip function)
113 (inst addi lip function
114 (- (ash simple-fun-code-offset word-shift) fun-pointer-lowtag))
116 (inst lr lip (make-fixup (extern-alien-name "closure_tramp") :foreign))
117 (emit-label normal-fn)
118 (storew lip fdefn fdefn-raw-addr-slot other-pointer-lowtag)
119 (storew function fdefn fdefn-fun-slot other-pointer-lowtag)
120 (move result function))))
122 (define-vop (fdefn-makunbound)
124 (:translate fdefn-makunbound)
125 (:args (fdefn :scs (descriptor-reg) :target result))
126 (:temporary (:scs (non-descriptor-reg)) temp)
127 (:results (result :scs (descriptor-reg)))
129 (storew null-tn fdefn fdefn-fun-slot other-pointer-lowtag)
130 (inst lr temp (make-fixup (extern-alien-name "undefined_tramp") :foreign))
131 (storew temp fdefn fdefn-raw-addr-slot other-pointer-lowtag)
132 (move result fdefn)))
136 ;;;; Binding and Unbinding.
138 ;;; BIND -- Establish VAL as a binding for SYMBOL. Save the old value and
139 ;;; the symbol on the binding stack and stuff the new value into the
143 (:args (val :scs (any-reg descriptor-reg))
144 (symbol :scs (descriptor-reg)))
145 (:temporary (:scs (descriptor-reg)) temp)
147 (loadw temp symbol sb!vm:symbol-value-slot sb!vm:other-pointer-lowtag)
148 (inst addi bsp-tn bsp-tn (* 2 sb!vm:n-word-bytes))
149 (storew temp bsp-tn (- sb!vm:binding-value-slot sb!vm:binding-size))
150 (storew symbol bsp-tn (- sb!vm:binding-symbol-slot sb!vm:binding-size))
151 (storew val symbol sb!vm:symbol-value-slot sb!vm:other-pointer-lowtag)))
155 (:temporary (:scs (descriptor-reg)) symbol value)
157 (loadw symbol bsp-tn (- sb!vm:binding-symbol-slot sb!vm:binding-size))
158 (loadw value bsp-tn (- sb!vm:binding-value-slot sb!vm:binding-size))
159 (storew value symbol sb!vm:symbol-value-slot sb!vm:other-pointer-lowtag)
160 (storew zero-tn bsp-tn (- sb!vm:binding-symbol-slot sb!vm:binding-size))
161 (inst subi bsp-tn bsp-tn (* 2 sb!vm:n-word-bytes))))
164 (define-vop (unbind-to-here)
165 (:args (arg :scs (descriptor-reg any-reg) :target where))
166 (:temporary (:scs (any-reg) :from (:argument 0)) where)
167 (:temporary (:scs (descriptor-reg)) symbol value)
169 (let ((loop (gen-label))
173 (inst cmpw where bsp-tn)
177 (loadw symbol bsp-tn (- sb!vm:binding-symbol-slot sb!vm:binding-size))
178 (inst cmpwi symbol 0)
180 (loadw value bsp-tn (- sb!vm:binding-value-slot sb!vm:binding-size))
181 (storew value symbol sb!vm:symbol-value-slot sb!vm:other-pointer-lowtag)
182 (storew zero-tn bsp-tn (- sb!vm:binding-symbol-slot sb!vm:binding-size))
185 (inst subi bsp-tn bsp-tn (* 2 sb!vm:n-word-bytes))
186 (inst cmpw where bsp-tn)
193 ;;;; Closure indexing.
195 (define-vop (closure-index-ref word-index-ref)
196 (:variant sb!vm:closure-info-offset sb!vm:fun-pointer-lowtag)
197 (:translate %closure-index-ref))
199 (define-vop (funcallable-instance-info word-index-ref)
200 (:variant funcallable-instance-info-offset sb!vm:fun-pointer-lowtag)
201 (:translate %funcallable-instance-info))
203 (define-vop (set-funcallable-instance-info word-index-set)
204 (:variant funcallable-instance-info-offset fun-pointer-lowtag)
205 (:translate %set-funcallable-instance-info))
207 (define-vop (funcallable-instance-lexenv cell-ref)
208 (:variant funcallable-instance-lexenv-slot fun-pointer-lowtag))
211 (define-vop (closure-ref slot-ref)
212 (:variant closure-info-offset fun-pointer-lowtag))
214 (define-vop (closure-init slot-set)
215 (:variant closure-info-offset fun-pointer-lowtag))
218 ;;;; Value Cell hackery.
220 (define-vop (value-cell-ref cell-ref)
221 (:variant value-cell-value-slot other-pointer-lowtag))
223 (define-vop (value-cell-set cell-set)
224 (:variant value-cell-value-slot other-pointer-lowtag))
228 ;;;; Instance hackery:
230 (define-vop (instance-length)
232 (:translate %instance-length)
233 (:args (struct :scs (descriptor-reg)))
234 (:temporary (:scs (non-descriptor-reg)) temp)
235 (:results (res :scs (unsigned-reg)))
236 (:result-types positive-fixnum)
238 (loadw temp struct 0 instance-pointer-lowtag)
239 (inst srwi res temp sb!vm:n-widetag-bits)))
241 (define-vop (instance-ref slot-ref)
242 (:variant instance-slots-offset instance-pointer-lowtag)
244 (:translate %instance-ref)
245 (:arg-types * (:constant index)))
248 (define-vop (instance-set slot-set)
250 (:translate %instance-set)
251 (:variant instance-slots-offset instance-pointer-lowtag)
252 (:arg-types instance (:constant index) *))
254 (define-vop (instance-index-ref word-index-ref)
256 (:translate %instance-ref)
257 (:variant instance-slots-offset instance-pointer-lowtag)
258 (:arg-types instance positive-fixnum))
260 (define-vop (instance-index-set word-index-set)
262 (:translate %instance-set)
263 (:variant instance-slots-offset instance-pointer-lowtag)
264 (:arg-types instance positive-fixnum *))
269 ;;;; Code object frobbing.
271 (define-vop (code-header-ref word-index-ref)
272 (:translate code-header-ref)
274 (:variant 0 other-pointer-lowtag))
276 (define-vop (code-header-set word-index-set)
277 (:translate code-header-set)
279 (:variant 0 other-pointer-lowtag))