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.
16 (defoptimizer (list stack-allocate-result) ((&rest args))
18 (defoptimizer (list* stack-allocate-result) ((&rest args))
19 (not (null (rest args))))
21 (define-vop (list-or-list*)
22 (:args (things :more t))
23 (:temporary (:scs (descriptor-reg) :type list) ptr)
24 (:temporary (:scs (descriptor-reg)) temp)
25 (:temporary (:scs (descriptor-reg) :type list :to (:result 0) :target result)
27 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
29 (:results (result :scs (descriptor-reg)))
35 (move result null-tn))
37 (move result (tn-ref-tn things)))
40 ((store-car (tn list &optional (slot cons-car-slot))
43 ((any-reg descriptor-reg zero null)
46 (load-stack-tn temp ,tn)
48 (storew reg ,list ,slot list-pointer-lowtag))))
49 (let* ((dx-p (node-stack-allocate-p node))
50 (cons-cells (if star (1- num) num))
51 (alloc (* (pad-data-block cons-size) cons-cells)))
52 (pseudo-atomic (pa-flag :extra (if dx-p 0 alloc))
55 (inst srl res (if dx-p csp-tn alloc-tn) n-lowtag-bits)
56 (inst sll res n-lowtag-bits)
57 (inst or res list-pointer-lowtag)
59 (inst addu csp-tn alloc))
61 (dotimes (i (1- cons-cells))
62 (store-car (tn-ref-tn things) ptr)
63 (setf things (tn-ref-across things))
64 (inst addu ptr ptr (pad-data-block cons-size))
66 (- cons-cdr-slot cons-size)
68 (store-car (tn-ref-tn things) ptr)
70 (setf things (tn-ref-across things))
71 (store-car (tn-ref-tn things) ptr cons-cdr-slot))
74 cons-cdr-slot list-pointer-lowtag)))
75 (aver (null (tn-ref-across things)))
76 (move result res))))))))
78 (define-vop (list list-or-list*)
81 (define-vop (list* list-or-list*)
85 ;;;; Special purpose inline allocators.
87 (define-vop (allocate-code-object)
88 (:args (boxed-arg :scs (any-reg))
89 (unboxed-arg :scs (any-reg)))
90 (:results (result :scs (descriptor-reg)))
91 (:temporary (:scs (non-descriptor-reg)) ndescr)
92 (:temporary (:scs (any-reg) :from (:argument 0)) boxed)
93 (:temporary (:scs (non-descriptor-reg) :from (:argument 1)) unboxed)
94 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
96 (inst li ndescr (lognot lowtag-mask))
97 (inst addu boxed boxed-arg
98 (fixnumize (1+ code-trace-table-offset-slot)))
99 (inst and boxed ndescr)
100 (inst srl unboxed unboxed-arg word-shift)
101 (inst addu unboxed unboxed lowtag-mask)
102 (inst and unboxed ndescr)
103 (inst sll ndescr boxed (- n-widetag-bits word-shift))
104 (inst or ndescr code-header-widetag)
106 (pseudo-atomic (pa-flag)
107 (inst or result alloc-tn other-pointer-lowtag)
108 (inst addu alloc-tn boxed)
109 (storew ndescr result 0 other-pointer-lowtag)
110 (storew unboxed result code-code-size-slot other-pointer-lowtag)
111 (inst addu alloc-tn unboxed)
112 (storew null-tn result code-entry-points-slot other-pointer-lowtag)
113 (storew null-tn result code-debug-info-slot other-pointer-lowtag))))
115 (define-vop (make-fdefn)
117 (:translate make-fdefn)
118 (:args (name :scs (descriptor-reg) :to :eval))
119 (:temporary (:scs (non-descriptor-reg)) temp)
120 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
121 (:results (result :scs (descriptor-reg) :from :argument))
123 (with-fixed-allocation (result pa-flag temp fdefn-widetag fdefn-size)
124 (inst li temp (make-fixup "undefined_tramp" :foreign))
125 (storew name result fdefn-name-slot other-pointer-lowtag)
126 (storew null-tn result fdefn-fun-slot other-pointer-lowtag)
127 (storew temp result fdefn-raw-addr-slot other-pointer-lowtag))))
129 (define-vop (make-closure)
130 (:args (function :to :save :scs (descriptor-reg)))
131 (:info length stack-allocate-p)
132 (:temporary (:scs (non-descriptor-reg)) temp)
133 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
134 (:results (result :scs (descriptor-reg)))
136 (let* ((size (+ length closure-info-offset))
137 (alloc-size (pad-data-block size)))
138 (pseudo-atomic (pa-flag :extra (if stack-allocate-p 0 alloc-size))
139 (cond (stack-allocate-p
141 (inst srl result csp-tn n-lowtag-bits)
142 (inst addu csp-tn alloc-size))
144 (inst srl result alloc-tn n-lowtag-bits)))
145 (inst sll result n-lowtag-bits)
146 (inst or result fun-pointer-lowtag)
147 (inst li temp (logior (ash (1- size) n-widetag-bits)
148 closure-header-widetag))
149 (storew temp result 0 fun-pointer-lowtag))
150 (storew function result closure-fun-slot fun-pointer-lowtag))))
152 ;;; The compiler likes to be able to directly make value cells.
153 (define-vop (make-value-cell)
154 (:args (value :to :save :scs (descriptor-reg any-reg null zero)))
155 (:temporary (:scs (non-descriptor-reg)) temp)
156 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
157 (:results (result :scs (descriptor-reg)))
159 (with-fixed-allocation (result pa-flag temp value-cell-header-widetag value-cell-size)
160 (storew value result value-cell-value-slot other-pointer-lowtag))))
163 ;;;; Automatic allocators for primitive objects.
165 (define-vop (make-unbound-marker)
167 (:results (result :scs (any-reg)))
169 (inst li result unbound-marker-widetag)))
171 (define-vop (make-funcallable-instance-tramp)
173 (:results (result :scs (any-reg)))
175 (inst li result (make-fixup "funcallable_instance_tramp" :foreign))))
177 (define-vop (fixed-alloc)
179 (:info name words type lowtag)
181 (:results (result :scs (descriptor-reg)))
182 (:temporary (:scs (non-descriptor-reg)) temp)
183 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
185 (pseudo-atomic (pa-flag :extra (pad-data-block words))
186 (inst or result alloc-tn lowtag)
188 (inst li temp (logior (ash (1- words) n-widetag-bits) type))
189 (storew temp result 0 lowtag)))))
191 (define-vop (var-alloc)
192 (:args (extra :scs (any-reg)))
193 (:arg-types positive-fixnum)
194 (:info name words type lowtag)
196 (:results (result :scs (descriptor-reg)))
197 (:temporary (:scs (any-reg)) bytes)
198 (:temporary (:scs (non-descriptor-reg)) header)
199 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
201 (inst addu bytes extra (* (1+ words) n-word-bytes))
202 (inst sll header bytes (- n-widetag-bits 2))
203 (inst addu header header (+ (ash -2 n-widetag-bits) type))
204 (inst srl bytes bytes n-lowtag-bits)
205 (inst sll bytes bytes n-lowtag-bits)
206 (pseudo-atomic (pa-flag)
207 (inst or result alloc-tn lowtag)
208 (storew header result 0 lowtag)
209 (inst addu alloc-tn alloc-tn bytes))))