1 ;;;; allocation VOPs for the HPPA
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)
24 (:results (result :scs (descriptor-reg)))
30 (move null-tn result))
32 (move (tn-ref-tn things) result))
38 ((any-reg descriptor-reg zero null)
41 (load-stack-tn temp ,tn)
43 (let* ((cons-cells (if star (1- num) num))
44 (alloc (* (pad-data-block cons-size) cons-cells)))
45 (pseudo-atomic (:extra alloc)
47 (inst dep list-pointer-lowtag 31 3 res)
49 (dotimes (i (1- cons-cells))
50 (storew (maybe-load (tn-ref-tn things)) ptr
51 cons-car-slot list-pointer-lowtag)
52 (setf things (tn-ref-across things))
53 (inst addi (pad-data-block cons-size) ptr ptr)
55 (- cons-cdr-slot cons-size)
57 (storew (maybe-load (tn-ref-tn things)) ptr
58 cons-car-slot list-pointer-lowtag)
60 (maybe-load (tn-ref-tn (tn-ref-across things)))
62 ptr cons-cdr-slot list-pointer-lowtag))
63 (move res result)))))))
66 (define-vop (list list-or-list*)
69 (define-vop (list* list-or-list*)
73 ;;;; Special purpose inline allocators.
75 (define-vop (allocate-vector-on-heap)
76 (:args (type :scs (unsigned-reg))
77 (length :scs (any-reg))
78 (words :scs (any-reg)))
79 (:arg-types positive-fixnum
82 (:temporary (:sc non-descriptor-reg) bytes)
83 (:results (result :scs (descriptor-reg) :from :load))
86 (inst addi (+ lowtag-mask
87 (* vector-data-offset n-word-bytes)) words bytes)
88 (inst dep 0 31 n-lowtag-bits bytes)
90 (set-lowtag other-pointer-lowtag alloc-tn result)
91 (inst add bytes alloc-tn alloc-tn)
92 (storew type result 0 other-pointer-lowtag)
93 (storew length result vector-length-slot other-pointer-lowtag))))
95 (define-vop (allocate-vector-on-stack)
96 (:args (type :scs (unsigned-reg))
97 (length :scs (any-reg))
98 (words :scs (any-reg)))
99 (:arg-types positive-fixnum
102 (:temporary (:sc non-descriptor-reg) bytes temp)
103 (:results (result :scs (descriptor-reg) :from :load))
106 (inst addi (+ lowtag-mask
107 (* vector-data-offset n-word-bytes)) words bytes)
108 (inst dep 0 31 n-lowtag-bits bytes)
109 ;; FIXME: It would be good to check for stack overflow here.
112 (set-lowtag other-pointer-lowtag csp-tn result)
113 (inst addi (* vector-data-offset n-word-bytes) csp-tn temp)
114 (inst add bytes csp-tn csp-tn)
115 (storew type result 0 other-pointer-lowtag)
116 (storew length result vector-length-slot other-pointer-lowtag)
117 (let ((loop (gen-label)))
119 (inst comb :<> temp csp-tn loop :nullify t)
120 (inst stwm zero-tn n-word-bytes temp)))))
122 (define-vop (allocate-code-object)
123 (:args (boxed-arg :scs (any-reg))
124 (unboxed-arg :scs (any-reg)))
125 (:results (result :scs (descriptor-reg)))
126 (:temporary (:scs (non-descriptor-reg)) ndescr)
127 (:temporary (:scs (any-reg) :from (:argument 0)) boxed)
128 (:temporary (:scs (non-descriptor-reg) :from (:argument 1)) unboxed)
130 (inst addi (fixnumize (1+ code-trace-table-offset-slot)) boxed-arg boxed)
131 (inst dep 0 31 3 boxed)
132 (inst srl unboxed-arg word-shift unboxed)
133 (inst addi lowtag-mask unboxed unboxed)
134 (inst dep 0 31 3 unboxed)
136 ;; Note: we don't have to subtract off the 4 that was added by
137 ;; pseudo-atomic, because depositing other-pointer-lowtag just adds
139 (inst move alloc-tn result)
140 (inst dep other-pointer-lowtag 31 3 result)
141 (inst add alloc-tn boxed alloc-tn)
142 (inst add alloc-tn unboxed alloc-tn)
143 (inst sll boxed (- n-widetag-bits word-shift) ndescr)
144 (inst addi code-header-widetag ndescr ndescr)
145 (storew ndescr result 0 other-pointer-lowtag)
146 (storew unboxed result code-code-size-slot other-pointer-lowtag)
147 (storew null-tn result code-entry-points-slot other-pointer-lowtag)
148 (storew null-tn result code-debug-info-slot other-pointer-lowtag))))
150 (define-vop (make-fdefn)
151 (:args (name :scs (descriptor-reg) :to :eval))
152 (:temporary (:scs (non-descriptor-reg)) temp)
153 (:results (result :scs (descriptor-reg) :from :argument))
155 (:translate make-fdefn)
157 (with-fixed-allocation (result temp fdefn-widetag fdefn-size)
158 (inst li (make-fixup "undefined_tramp" :foreign) temp)
159 (storew name result fdefn-name-slot other-pointer-lowtag)
160 (storew null-tn result fdefn-fun-slot other-pointer-lowtag)
161 (storew temp result fdefn-raw-addr-slot other-pointer-lowtag))))
163 (define-vop (make-closure)
164 (:args (function :to :save :scs (descriptor-reg)))
165 (:info length stack-allocate-p)
166 (:ignore stack-allocate-p)
167 (:temporary (:scs (non-descriptor-reg)) temp)
168 (:results (result :scs (descriptor-reg)))
170 (let ((size (+ length closure-info-offset)))
171 (pseudo-atomic (:extra (pad-data-block size))
172 (inst move alloc-tn result)
173 (inst dep fun-pointer-lowtag 31 3 result)
174 (inst li (logior (ash (1- size) n-widetag-bits) closure-header-widetag) temp)
175 (storew temp result 0 fun-pointer-lowtag)
176 (storew function result closure-fun-slot fun-pointer-lowtag)))))
178 ;;; The compiler likes to be able to directly make value cells.
179 (define-vop (make-value-cell)
180 (:args (value :to :save :scs (descriptor-reg any-reg)))
181 (:temporary (:scs (non-descriptor-reg)) temp)
182 (:results (result :scs (descriptor-reg)))
183 (:info stack-allocate-p)
184 (:ignore stack-allocate-p)
186 (with-fixed-allocation
187 (result temp value-cell-header-widetag value-cell-size))
188 (storew value result value-cell-value-slot other-pointer-lowtag)))
192 ;;;; Automatic allocators for primitive objects.
194 (define-vop (make-unbound-marker)
196 (:results (result :scs (any-reg)))
198 (inst li unbound-marker-widetag result)))
200 (define-vop (make-funcallable-instance-tramp)
202 (:results (result :scs (any-reg)))
204 (inst li (make-fixup "funcallable_instance_tramp" :foreign) result)))
206 (define-vop (fixed-alloc)
208 (:info name words type lowtag stack-allocate-p)
210 (:results (result :scs (descriptor-reg)))
211 (:temporary (:scs (non-descriptor-reg)) temp)
213 (with-fixed-allocation
214 (result nil temp type words stack-allocate-p
215 :lowtag lowtag :maybe-write t))))
217 (define-vop (var-alloc)
218 (:args (extra :scs (any-reg)))
219 (:arg-types positive-fixnum)
220 (:info name words type lowtag)
222 (:results (result :scs (descriptor-reg)))
223 (:temporary (:scs (any-reg)) bytes)
224 (:temporary (:scs (non-descriptor-reg)) header)
226 (inst addi (* (1+ words) n-word-bytes) extra bytes)
227 (inst sll bytes (- n-widetag-bits 2) header)
228 (inst addi (+ (ash -2 n-widetag-bits) type) header header)
229 (inst dep 0 31 3 bytes)
231 (inst move alloc-tn result)
232 (inst dep lowtag 31 3 result)
233 (storew header result 0 lowtag)
234 (inst add alloc-tn bytes alloc-tn))))