1 ;;;; allocation VOPs for Mips
3 ;;;; This software is part of the SBCL system. See the README file for
6 ;;;; This software is derived from the CMU CL system, which was
7 ;;;; written at Carnegie Mellon University and released into the
8 ;;;; public domain. The software is in the public domain and is
9 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
10 ;;;; files for more information.
15 (define-vop (list-or-list*)
16 (:args (things :more t))
17 (:temporary (:scs (descriptor-reg) :type list) ptr)
18 (:temporary (:scs (descriptor-reg)) temp)
19 (:temporary (:scs (descriptor-reg) :type list :to (:result 0) :target result)
21 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
23 (:results (result :scs (descriptor-reg)))
29 (move result null-tn))
31 (move result (tn-ref-tn things)))
34 ((store-car (tn list &optional (slot cons-car-slot))
37 ((any-reg descriptor-reg zero null)
40 (load-stack-tn temp ,tn)
42 (storew reg ,list ,slot list-pointer-lowtag))))
43 (let* ((dx-p (node-stack-allocate-p node))
44 (cons-cells (if star (1- num) num))
45 (alloc (* (pad-data-block cons-size) cons-cells)))
46 (pseudo-atomic (pa-flag :extra (if dx-p 0 alloc))
49 (inst srl res (if dx-p csp-tn alloc-tn) n-lowtag-bits)
50 (inst sll res n-lowtag-bits)
51 (inst or res list-pointer-lowtag)
53 (inst addu csp-tn alloc))
55 (dotimes (i (1- cons-cells))
56 (store-car (tn-ref-tn things) ptr)
57 (setf things (tn-ref-across things))
58 (inst addu ptr ptr (pad-data-block cons-size))
60 (- cons-cdr-slot cons-size)
62 (store-car (tn-ref-tn things) ptr)
64 (setf things (tn-ref-across things))
65 (store-car (tn-ref-tn things) ptr cons-cdr-slot))
68 cons-cdr-slot list-pointer-lowtag)))
69 (aver (null (tn-ref-across things)))
70 (move result res))))))))
72 (define-vop (list list-or-list*)
75 (define-vop (list* list-or-list*)
78 ;;;; Special purpose inline allocators.
81 (define-vop (allocate-vector-on-heap)
82 (:args (type :scs (unsigned-reg))
83 (length :scs (any-reg))
84 (words :scs (any-reg)))
85 (:arg-types positive-fixnum
88 (:temporary (:sc non-descriptor-reg) bytes)
89 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
90 (:results (result :scs (descriptor-reg) :from :load))
93 (inst addu bytes words (+ lowtag-mask
94 (* vector-data-offset n-word-bytes)))
95 (inst srl bytes n-lowtag-bits)
96 (inst sll bytes n-lowtag-bits)
97 (pseudo-atomic (pa-flag)
98 (inst or result alloc-tn other-pointer-lowtag)
99 (inst addu alloc-tn bytes)
100 (storew type result 0 other-pointer-lowtag)
101 (storew length result vector-length-slot other-pointer-lowtag))))
103 (define-vop (allocate-vector-on-stack)
104 (:args (type :scs (unsigned-reg))
105 (length :scs (any-reg))
106 (words :scs (any-reg)))
107 (:arg-types positive-fixnum
110 (:temporary (:sc non-descriptor-reg) bytes)
111 (:temporary (:sc non-descriptor-reg) temp)
112 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
113 (:results (result :scs (descriptor-reg) :from :load))
116 (inst addu bytes words (+ lowtag-mask
117 (* vector-data-offset n-word-bytes)))
118 (inst srl bytes n-lowtag-bits)
119 (inst sll bytes n-lowtag-bits)
120 ;; FIXME: It would be good to check for stack overflow here.
121 (pseudo-atomic (pa-flag)
123 (inst or result csp-tn other-pointer-lowtag)
124 (inst addu temp csp-tn (* vector-data-offset n-word-bytes))
125 (inst addu csp-tn bytes)
126 (storew type result 0 other-pointer-lowtag)
127 (storew length result vector-length-slot other-pointer-lowtag)
128 (let ((loop (gen-label)))
130 (storew zero-tn temp 0)
131 (inst bne temp csp-tn loop)
132 (inst addu temp n-word-bytes))
135 (define-vop (allocate-code-object)
136 (:args (boxed-arg :scs (any-reg))
137 (unboxed-arg :scs (any-reg)))
138 (:results (result :scs (descriptor-reg)))
139 (:temporary (:scs (non-descriptor-reg)) ndescr)
140 (:temporary (:scs (any-reg) :from (:argument 0)) boxed)
141 (:temporary (:scs (non-descriptor-reg) :from (:argument 1)) unboxed)
142 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
144 (inst li ndescr (lognot lowtag-mask))
145 (inst addu boxed boxed-arg
146 (fixnumize (1+ code-trace-table-offset-slot)))
147 (inst and boxed ndescr)
148 (inst srl unboxed unboxed-arg word-shift)
149 (inst addu unboxed unboxed lowtag-mask)
150 (inst and unboxed ndescr)
151 (inst sll ndescr boxed (- n-widetag-bits word-shift))
152 (inst or ndescr code-header-widetag)
154 (pseudo-atomic (pa-flag)
155 (inst or result alloc-tn other-pointer-lowtag)
156 (inst addu alloc-tn boxed)
157 (storew ndescr result 0 other-pointer-lowtag)
158 (storew unboxed result code-code-size-slot other-pointer-lowtag)
159 (inst addu alloc-tn unboxed)
160 (storew null-tn result code-entry-points-slot other-pointer-lowtag)
161 (storew null-tn result code-debug-info-slot other-pointer-lowtag))))
163 (define-vop (make-fdefn)
165 (:translate make-fdefn)
166 (:args (name :scs (descriptor-reg) :to :eval))
167 (:temporary (:scs (non-descriptor-reg)) temp)
168 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
169 (:results (result :scs (descriptor-reg) :from :argument))
171 (with-fixed-allocation (result pa-flag temp fdefn-widetag fdefn-size nil)
172 (inst li temp (make-fixup "undefined_tramp" :foreign))
173 (storew name result fdefn-name-slot other-pointer-lowtag)
174 (storew null-tn result fdefn-fun-slot other-pointer-lowtag)
175 (storew temp result fdefn-raw-addr-slot other-pointer-lowtag))))
177 (define-vop (make-closure)
178 (:args (function :to :save :scs (descriptor-reg)))
179 (:info length stack-allocate-p)
180 (:temporary (:scs (non-descriptor-reg)) temp)
181 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
182 (:results (result :scs (descriptor-reg)))
184 (let* ((size (+ length closure-info-offset))
185 (alloc-size (pad-data-block size)))
186 (pseudo-atomic (pa-flag :extra (if stack-allocate-p 0 alloc-size))
187 (cond (stack-allocate-p
189 (inst srl result csp-tn n-lowtag-bits)
190 (inst addu csp-tn alloc-size))
192 (inst srl result alloc-tn n-lowtag-bits)))
193 (inst sll result n-lowtag-bits)
194 (inst or result fun-pointer-lowtag)
195 (inst li temp (logior (ash (1- size) n-widetag-bits)
196 closure-header-widetag))
197 (storew temp result 0 fun-pointer-lowtag)
198 (storew function result closure-fun-slot fun-pointer-lowtag)))))
200 ;;; The compiler likes to be able to directly make value cells.
201 (define-vop (make-value-cell)
202 (:args (value :to :save :scs (descriptor-reg any-reg null zero)))
203 (:temporary (:scs (non-descriptor-reg)) temp)
204 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
205 (:info stack-allocate-p)
206 (:results (result :scs (descriptor-reg)))
208 (with-fixed-allocation (result pa-flag temp value-cell-header-widetag
209 value-cell-size stack-allocate-p)
210 (storew value result value-cell-value-slot other-pointer-lowtag))))
212 ;;;; Automatic allocators for primitive objects.
214 (define-vop (make-unbound-marker)
216 (:results (result :scs (descriptor-reg any-reg)))
218 (inst li result unbound-marker-widetag)))
220 (define-vop (make-funcallable-instance-tramp)
222 (:results (result :scs (any-reg)))
224 (inst li result (make-fixup "funcallable_instance_tramp" :foreign))))
226 (define-vop (fixed-alloc)
228 (:info name words type lowtag stack-allocate-p)
230 (:results (result :scs (descriptor-reg)))
231 (:temporary (:scs (non-descriptor-reg)) temp)
232 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
234 (pseudo-atomic (pa-flag :extra (if stack-allocate-p
236 (pad-data-block words)))
237 (cond (stack-allocate-p
239 (inst or result csp-tn lowtag)
240 (inst addu csp-tn (pad-data-block words)))
242 ;; The pseudo-atomic bit in alloc-tn is set. If the
243 ;; lowtag also has a 1 bit in the same position, we're all
244 ;; set. Otherwise, we need to subtract the pseudo-atomic
246 (inst or result alloc-tn (if (logbitp 0 lowtag) lowtag
249 (inst li temp (logior (ash (1- words) n-widetag-bits) type))
250 (storew temp result 0 lowtag)))))
252 (define-vop (var-alloc)
253 (:args (extra :scs (any-reg)))
254 (:arg-types positive-fixnum)
255 (:info name words type lowtag)
257 (:results (result :scs (descriptor-reg)))
258 (:temporary (:scs (any-reg)) bytes)
259 (:temporary (:scs (non-descriptor-reg)) header)
260 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
262 (inst addu bytes extra (* (1+ words) n-word-bytes))
263 (inst sll header bytes (- n-widetag-bits n-fixnum-tag-bits))
264 (inst addu header header (+ (ash -2 n-widetag-bits) type))
265 (inst srl bytes bytes n-lowtag-bits)
266 (inst sll bytes bytes n-lowtag-bits)
267 (pseudo-atomic (pa-flag)
268 (inst or result alloc-tn lowtag)
269 (storew header result 0 lowtag)
270 (inst addu alloc-tn alloc-tn bytes))))