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.
80 (define-vop (allocate-code-object)
81 (:args (boxed-arg :scs (any-reg))
82 (unboxed-arg :scs (any-reg)))
83 (:results (result :scs (descriptor-reg)))
84 (:temporary (:scs (non-descriptor-reg)) ndescr)
85 (:temporary (:scs (any-reg) :from (:argument 0)) boxed)
86 (:temporary (:scs (non-descriptor-reg) :from (:argument 1)) unboxed)
87 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
89 (inst li ndescr (lognot lowtag-mask))
90 (inst addu boxed boxed-arg
91 (fixnumize (1+ code-trace-table-offset-slot)))
92 (inst and boxed ndescr)
93 (inst srl unboxed unboxed-arg word-shift)
94 (inst addu unboxed unboxed lowtag-mask)
95 (inst and unboxed ndescr)
96 (inst sll ndescr boxed (- n-widetag-bits word-shift))
97 (inst or ndescr code-header-widetag)
99 (pseudo-atomic (pa-flag)
100 (inst or result alloc-tn other-pointer-lowtag)
101 (inst addu alloc-tn boxed)
102 (storew ndescr result 0 other-pointer-lowtag)
103 (storew unboxed result code-code-size-slot other-pointer-lowtag)
104 (inst addu alloc-tn unboxed)
105 (storew null-tn result code-entry-points-slot other-pointer-lowtag)
106 (storew null-tn result code-debug-info-slot other-pointer-lowtag))))
108 (define-vop (make-fdefn)
110 (:translate make-fdefn)
111 (:args (name :scs (descriptor-reg) :to :eval))
112 (:temporary (:scs (non-descriptor-reg)) temp)
113 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
114 (:results (result :scs (descriptor-reg) :from :argument))
116 (with-fixed-allocation (result pa-flag temp fdefn-widetag fdefn-size nil)
117 (inst li temp (make-fixup "undefined_tramp" :foreign))
118 (storew name result fdefn-name-slot other-pointer-lowtag)
119 (storew null-tn result fdefn-fun-slot other-pointer-lowtag)
120 (storew temp result fdefn-raw-addr-slot other-pointer-lowtag))))
122 (define-vop (make-closure)
123 (:args (function :to :save :scs (descriptor-reg)))
124 (:info length stack-allocate-p)
125 (:temporary (:scs (non-descriptor-reg)) temp)
126 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
127 (:results (result :scs (descriptor-reg)))
129 (let* ((size (+ length closure-info-offset))
130 (alloc-size (pad-data-block size)))
131 (pseudo-atomic (pa-flag :extra (if stack-allocate-p 0 alloc-size))
132 (cond (stack-allocate-p
134 (inst srl result csp-tn n-lowtag-bits)
135 (inst addu csp-tn alloc-size))
137 (inst srl result alloc-tn n-lowtag-bits)))
138 (inst sll result n-lowtag-bits)
139 (inst or result fun-pointer-lowtag)
140 (inst li temp (logior (ash (1- size) n-widetag-bits)
141 closure-header-widetag))
142 (storew temp result 0 fun-pointer-lowtag)
143 (storew function result closure-fun-slot fun-pointer-lowtag)))))
145 ;;; The compiler likes to be able to directly make value cells.
146 (define-vop (make-value-cell)
147 (:args (value :to :save :scs (descriptor-reg any-reg null zero)))
148 (:temporary (:scs (non-descriptor-reg)) temp)
149 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
150 (:info stack-allocate-p)
151 (:results (result :scs (descriptor-reg)))
153 (with-fixed-allocation (result pa-flag temp value-cell-header-widetag
154 value-cell-size stack-allocate-p)
155 (storew value result value-cell-value-slot other-pointer-lowtag))))
157 ;;;; Automatic allocators for primitive objects.
159 (define-vop (make-unbound-marker)
161 (:results (result :scs (any-reg)))
163 (inst li result unbound-marker-widetag)))
165 (define-vop (make-funcallable-instance-tramp)
167 (:results (result :scs (any-reg)))
169 (inst li result (make-fixup "funcallable_instance_tramp" :foreign))))
171 (define-vop (fixed-alloc)
173 (:info name words type lowtag stack-allocate-p)
174 (:ignore name stack-allocate-p)
175 (:results (result :scs (descriptor-reg)))
176 (:temporary (:scs (non-descriptor-reg)) temp)
177 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
179 (pseudo-atomic (pa-flag :extra (pad-data-block words))
180 (inst or result alloc-tn lowtag)
182 (inst li temp (logior (ash (1- words) n-widetag-bits) type))
183 (storew temp result 0 lowtag)))))
185 (define-vop (var-alloc)
186 (:args (extra :scs (any-reg)))
187 (:arg-types positive-fixnum)
188 (:info name words type lowtag)
190 (:results (result :scs (descriptor-reg)))
191 (:temporary (:scs (any-reg)) bytes)
192 (:temporary (:scs (non-descriptor-reg)) header)
193 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
195 (inst addu bytes extra (* (1+ words) n-word-bytes))
196 (inst sll header bytes (- n-widetag-bits 2))
197 (inst addu header header (+ (ash -2 n-widetag-bits) type))
198 (inst srl bytes bytes n-lowtag-bits)
199 (inst sll bytes bytes n-lowtag-bits)
200 (pseudo-atomic (pa-flag)
201 (inst or result alloc-tn lowtag)
202 (storew header result 0 lowtag)
203 (inst addu alloc-tn alloc-tn bytes))))