1 ;;;; allocation VOPs for the Sparc port
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 (define-vop (list-or-list*)
17 (:args (things :more t))
18 (:temporary (:scs (descriptor-reg) :type list) ptr)
19 (:temporary (:scs (descriptor-reg)) temp)
20 (:temporary (:scs (descriptor-reg) :type list :to (:result 0) :target result)
23 (:results (result :scs (descriptor-reg)))
28 (move result null-tn))
30 (move result (tn-ref-tn things)))
36 ((any-reg descriptor-reg zero null)
39 (load-stack-tn temp ,tn)
41 (let* ((cons-cells (if star (1- num) num))
42 (alloc (* (pad-data-block cons-size) cons-cells)))
43 (pseudo-atomic (:extra alloc)
44 (inst andn res alloc-tn lowtag-mask)
45 (inst or res list-pointer-lowtag)
47 (dotimes (i (1- cons-cells))
48 (storew (maybe-load (tn-ref-tn things)) ptr
49 cons-car-slot list-pointer-lowtag)
50 (setf things (tn-ref-across things))
51 (inst add ptr ptr (pad-data-block cons-size))
53 (- cons-cdr-slot cons-size)
55 (storew (maybe-load (tn-ref-tn things)) ptr
56 cons-car-slot list-pointer-lowtag)
58 (maybe-load (tn-ref-tn (tn-ref-across things)))
60 ptr cons-cdr-slot list-pointer-lowtag))
61 (move result res)))))))
63 (define-vop (list list-or-list*)
66 (define-vop (list* list-or-list*)
70 ;;;; Special purpose inline allocators.
72 (define-vop (allocate-code-object)
73 (:args (boxed-arg :scs (any-reg))
74 (unboxed-arg :scs (any-reg)))
75 (:results (result :scs (descriptor-reg)))
76 (:temporary (:scs (non-descriptor-reg)) ndescr)
77 (:temporary (:scs (any-reg) :from (:argument 0)) boxed)
78 (:temporary (:scs (non-descriptor-reg) :from (:argument 1)) unboxed)
80 (inst add boxed boxed-arg (fixnumize (1+ code-trace-table-offset-slot)))
81 (inst and boxed (lognot lowtag-mask))
82 (inst srl unboxed unboxed-arg word-shift)
83 (inst add unboxed lowtag-mask)
84 (inst and unboxed (lognot lowtag-mask))
87 ;; Note: we don't have to subtract off the 4 that was added by
88 ;; pseudo-atomic, because oring in other-pointer-lowtag just adds
91 ;; This looks like another dreadful type pun. CSR - 2002-02-06
92 (inst or result alloc-tn other-pointer-lowtag)
93 (inst add alloc-tn boxed)
94 (inst add alloc-tn unboxed)
95 (inst sll ndescr boxed (- n-widetag-bits word-shift))
96 (inst or ndescr code-header-widetag)
97 (storew ndescr result 0 other-pointer-lowtag)
98 (storew unboxed result code-code-size-slot other-pointer-lowtag)
99 (storew null-tn result code-entry-points-slot other-pointer-lowtag)
100 (storew null-tn result code-debug-info-slot other-pointer-lowtag))))
102 (define-vop (make-fdefn)
103 (:args (name :scs (descriptor-reg) :to :eval))
104 (:temporary (:scs (non-descriptor-reg)) temp)
105 (:results (result :scs (descriptor-reg) :from :argument))
107 (:translate make-fdefn)
109 (with-fixed-allocation (result temp fdefn-widetag fdefn-size)
110 (inst li temp (make-fixup (extern-alien-name "undefined_tramp") :foreign))
111 (storew name result fdefn-name-slot other-pointer-lowtag)
112 (storew null-tn result fdefn-fun-slot other-pointer-lowtag)
113 (storew temp result fdefn-raw-addr-slot other-pointer-lowtag))))
116 (define-vop (make-closure)
117 (:args (function :to :save :scs (descriptor-reg)))
119 (:temporary (:scs (non-descriptor-reg)) temp)
120 (:results (result :scs (descriptor-reg)))
122 (let ((size (+ length closure-info-offset)))
123 (pseudo-atomic (:extra (pad-data-block size))
124 (inst andn result alloc-tn lowtag-mask)
125 (inst or result fun-pointer-lowtag)
126 (inst li temp (logior (ash (1- size) n-widetag-bits) closure-header-widetag))
127 (storew temp result 0 fun-pointer-lowtag)))
128 (storew function result closure-fun-slot fun-pointer-lowtag)))
130 ;;; The compiler likes to be able to directly make value cells.
132 (define-vop (make-value-cell)
133 (:args (value :to :save :scs (descriptor-reg any-reg)))
134 (:temporary (:scs (non-descriptor-reg)) temp)
135 (:results (result :scs (descriptor-reg)))
137 (with-fixed-allocation
138 (result temp value-cell-header-widetag value-cell-size))
139 (storew value result value-cell-value-slot other-pointer-lowtag)))
143 ;;;; Automatic allocators for primitive objects.
145 (define-vop (make-unbound-marker)
147 (:results (result :scs (any-reg)))
149 (inst li result unbound-marker-widetag)))
151 (define-vop (fixed-alloc)
153 (:info name words type lowtag)
155 (:results (result :scs (descriptor-reg)))
156 (:temporary (:scs (non-descriptor-reg)) temp)
158 (pseudo-atomic (:extra (pad-data-block words))
159 (cond ((logbitp (1- n-lowtag-bits) lowtag)
160 (inst or result alloc-tn lowtag))
162 (inst andn result alloc-tn lowtag-mask)
163 (inst or result lowtag)))
165 (inst li temp (logior (ash (1- words) n-widetag-bits) type))
166 (storew temp result 0 lowtag)))))
168 (define-vop (var-alloc)
169 (:args (extra :scs (any-reg)))
170 (:arg-types positive-fixnum)
171 (:info name words type lowtag)
173 (:results (result :scs (descriptor-reg)))
174 (:temporary (:scs (any-reg)) bytes header)
176 (inst add bytes extra (* (1+ words) n-word-bytes))
177 (inst sll header bytes (- n-widetag-bits 2))
178 (inst add header header (+ (ash -2 n-widetag-bits) type))
179 (inst and bytes (lognot lowtag-mask))
181 ;; Need to be careful if the lowtag and the pseudo-atomic flag
182 ;; are not compatible.
183 (cond ((logbitp (1- n-lowtag-bits) lowtag)
184 (inst or result alloc-tn lowtag))
186 (inst andn result alloc-tn lowtag-mask)
187 (inst or result lowtag)))
188 (storew header result 0 lowtag)
189 (inst add alloc-tn alloc-tn bytes))))