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.
17 (define-vop (list-or-list*)
18 (:args (things :more t))
19 (:temporary (:scs (descriptor-reg) :type list) ptr)
20 (:temporary (:scs (descriptor-reg)) temp)
21 (:temporary (:scs (descriptor-reg) :type list :to (:result 0) :target result)
23 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
25 (:results (result :scs (descriptor-reg)))
30 (move result null-tn))
32 (move result (tn-ref-tn things)))
35 ((store-car (tn list &optional (slot cons-car-slot))
38 ((any-reg descriptor-reg) ,tn)
42 (load-stack-tn temp ,tn)
44 (storew reg ,list ,slot list-pointer-lowtag))))
45 (let ((cons-cells (if star (1- num) num)))
46 (pseudo-atomic (pa-flag
47 :extra (* (pad-data-block cons-size)
49 (inst or res alloc-tn list-pointer-lowtag)
51 (dotimes (i (1- cons-cells))
52 (store-car (tn-ref-tn things) ptr)
53 (setf things (tn-ref-across things))
54 (inst addu ptr ptr (pad-data-block cons-size))
56 (- cons-cdr-slot cons-size)
58 (store-car (tn-ref-tn things) ptr)
60 (setf things (tn-ref-across things))
61 (store-car (tn-ref-tn things) ptr cons-cdr-slot))
64 cons-cdr-slot list-pointer-lowtag)))
65 (aver (null (tn-ref-across things)))
66 (move result res))))))))
68 (define-vop (list list-or-list*)
71 (define-vop (list* list-or-list*)
75 ;;;; Special purpose inline allocators.
77 (define-vop (allocate-code-object)
78 (:args (boxed-arg :scs (any-reg))
79 (unboxed-arg :scs (any-reg)))
80 (:results (result :scs (descriptor-reg)))
81 (:temporary (:scs (non-descriptor-reg)) ndescr)
82 (:temporary (:scs (any-reg) :from (:argument 0)) boxed)
83 (:temporary (:scs (non-descriptor-reg) :from (:argument 1)) unboxed)
84 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
86 (inst li ndescr (lognot lowtag-mask))
87 (inst addu boxed boxed-arg
88 (fixnumize (1+ code-trace-table-offset-slot)))
89 (inst and boxed ndescr)
90 (inst srl unboxed unboxed-arg word-shift)
91 (inst addu unboxed unboxed lowtag-mask)
92 (inst and unboxed ndescr)
93 (inst sll ndescr boxed (- n-widetag-bits word-shift))
94 (inst or ndescr code-header-widetag)
96 (pseudo-atomic (pa-flag)
97 (inst or result alloc-tn other-pointer-lowtag)
98 (inst addu alloc-tn boxed)
99 (storew ndescr result 0 other-pointer-lowtag)
100 (storew unboxed result code-code-size-slot other-pointer-lowtag)
101 (inst addu alloc-tn unboxed)
102 (storew null-tn result code-entry-points-slot other-pointer-lowtag)
103 (storew null-tn result code-debug-info-slot other-pointer-lowtag))))
105 (define-vop (make-fdefn)
107 (:translate make-fdefn)
108 (:args (name :scs (descriptor-reg) :to :eval))
109 (:temporary (:scs (non-descriptor-reg)) temp)
110 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
111 (:results (result :scs (descriptor-reg) :from :argument))
113 (with-fixed-allocation (result pa-flag temp fdefn-widetag fdefn-size)
114 (inst li temp (make-fixup "undefined_tramp" :foreign))
115 (storew name result fdefn-name-slot other-pointer-lowtag)
116 (storew null-tn result fdefn-fun-slot other-pointer-lowtag)
117 (storew temp result fdefn-raw-addr-slot other-pointer-lowtag))))
119 (define-vop (make-closure)
120 (:args (function :to :save :scs (descriptor-reg)))
121 (:info length stack-allocate-p)
122 (:temporary (:scs (non-descriptor-reg)) temp)
123 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
124 (:results (result :scs (descriptor-reg)))
126 (let* ((size (+ length closure-info-offset))
127 (alloc-size (pad-data-block size)))
128 (pseudo-atomic (pa-flag :extra (if stack-allocate-p 0 alloc-size))
129 (cond (stack-allocate-p
131 (inst srl result csp-tn n-lowtag-bits)
132 (inst addu csp-tn alloc-size))
134 (inst srl result alloc-tn n-lowtag-bits)))
135 (inst sll result n-lowtag-bits)
136 (inst or result fun-pointer-lowtag)
137 (inst li temp (logior (ash (1- size) n-widetag-bits)
138 closure-header-widetag))
139 (storew temp result 0 fun-pointer-lowtag))
140 (storew result result closure-self-slot fun-pointer-lowtag)
141 (storew function result closure-fun-slot fun-pointer-lowtag))))
143 ;;; The compiler likes to be able to directly make value cells.
145 (define-vop (make-value-cell)
146 (:args (value :to :save :scs (descriptor-reg any-reg null zero)))
147 (:temporary (:scs (non-descriptor-reg)) temp)
148 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
149 (:results (result :scs (descriptor-reg)))
151 (with-fixed-allocation (result pa-flag temp value-cell-header-widetag value-cell-size)
152 (storew value result value-cell-value-slot other-pointer-lowtag))))
155 ;;;; Automatic allocators for primitive objects.
157 (define-vop (make-unbound-marker)
159 (:results (result :scs (any-reg)))
161 (inst li result unbound-marker-widetag)))
163 (define-vop (fixed-alloc)
165 (:info name words type lowtag)
167 (:results (result :scs (descriptor-reg)))
168 (:temporary (:scs (non-descriptor-reg)) temp)
169 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
171 (pseudo-atomic (pa-flag :extra (pad-data-block words))
172 (inst or result alloc-tn lowtag)
174 (inst li temp (logior (ash (1- words) n-widetag-bits) type))
175 (storew temp result 0 lowtag)))))
177 (define-vop (var-alloc)
178 (:args (extra :scs (any-reg)))
179 (:arg-types positive-fixnum)
180 (:info name words type lowtag)
182 (:results (result :scs (descriptor-reg)))
183 (:temporary (:scs (any-reg)) bytes)
184 (:temporary (:scs (non-descriptor-reg)) header)
185 (:temporary (:sc non-descriptor-reg :offset nl4-offset) pa-flag)
187 (inst addu bytes extra (* (1+ words) n-word-bytes))
188 (inst sll header bytes (- n-widetag-bits 2))
189 (inst addu header header (+ (ash -2 n-widetag-bits) type))
190 (inst srl bytes bytes n-lowtag-bits)
191 (inst sll bytes bytes n-lowtag-bits)
192 (pseudo-atomic (pa-flag)
193 (inst or result alloc-tn lowtag)
194 (storew header result 0 lowtag)
195 (inst addu alloc-tn alloc-tn bytes))))