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.
15 (defoptimizer (list stack-allocate-result
) ((&rest args
))
17 (defoptimizer (list* stack-allocate-result
) ((&rest args
))
18 (not (null (rest args
))))
20 (define-vop (list-or-list*)
21 (:args
(things :more t
))
22 (:temporary
(:scs
(descriptor-reg) :type list
) ptr
)
23 (:temporary
(:scs
(descriptor-reg)) temp
)
24 (:temporary
(:scs
(descriptor-reg) :type list
:to
(:result
0) :target result
)
27 (:results
(result :scs
(descriptor-reg)))
33 (move result null-tn
))
35 (move result
(tn-ref-tn things
)))
41 ((any-reg descriptor-reg zero null
)
44 (load-stack-tn temp
,tn
)
46 (let* ((dx-p (node-stack-allocate-p node
))
47 (cons-cells (if star
(1- num
) num
))
48 (alloc (* (pad-data-block cons-size
) cons-cells
)))
49 (pseudo-atomic (:extra
(if dx-p
0 alloc
))
50 (let ((allocation-area-tn (if dx-p csp-tn alloc-tn
)))
53 (inst andn res allocation-area-tn lowtag-mask
)
54 (inst or res list-pointer-lowtag
)
56 (inst add csp-tn csp-tn alloc
)))
58 (dotimes (i (1- cons-cells
))
59 (storew (maybe-load (tn-ref-tn things
)) ptr
60 cons-car-slot list-pointer-lowtag
)
61 (setf things
(tn-ref-across things
))
62 (inst add ptr ptr
(pad-data-block cons-size
))
64 (- cons-cdr-slot cons-size
)
66 (storew (maybe-load (tn-ref-tn things
)) ptr
67 cons-car-slot list-pointer-lowtag
)
69 (maybe-load (tn-ref-tn (tn-ref-across things
)))
71 ptr cons-cdr-slot list-pointer-lowtag
))
72 (move result res
)))))))
74 (define-vop (list list-or-list
*)
77 (define-vop (list* list-or-list
*)
81 ;;;; Special purpose inline allocators.
83 (define-vop (allocate-code-object)
84 (:args
(boxed-arg :scs
(any-reg))
85 (unboxed-arg :scs
(any-reg)))
86 (:results
(result :scs
(descriptor-reg)))
87 (:temporary
(:scs
(non-descriptor-reg)) ndescr
)
88 (:temporary
(:scs
(any-reg) :from
(:argument
0)) boxed
)
89 (:temporary
(:scs
(non-descriptor-reg) :from
(:argument
1)) unboxed
)
91 (inst add boxed boxed-arg
(fixnumize (1+ code-trace-table-offset-slot
)))
92 (inst and boxed
(lognot lowtag-mask
))
93 (inst srl unboxed unboxed-arg word-shift
)
94 (inst add unboxed lowtag-mask
)
95 (inst and unboxed
(lognot lowtag-mask
))
98 ;; Note: we don't have to subtract off the 4 that was added by
99 ;; pseudo-atomic, because oring in other-pointer-lowtag just adds
102 ;; This looks like another dreadful type pun. CSR - 2002-02-06
103 (inst or result alloc-tn other-pointer-lowtag
)
104 (inst add alloc-tn boxed
)
105 (inst add alloc-tn unboxed
)
106 (inst sll ndescr boxed
(- n-widetag-bits word-shift
))
107 (inst or ndescr code-header-widetag
)
108 (storew ndescr result
0 other-pointer-lowtag
)
109 (storew unboxed result code-code-size-slot other-pointer-lowtag
)
110 (storew null-tn result code-entry-points-slot other-pointer-lowtag
)
111 (storew null-tn result code-debug-info-slot other-pointer-lowtag
))))
113 (define-vop (make-fdefn)
114 (:args
(name :scs
(descriptor-reg) :to
:eval
))
115 (:temporary
(:scs
(non-descriptor-reg)) temp
)
116 (:results
(result :scs
(descriptor-reg) :from
:argument
))
118 (:translate make-fdefn
)
120 (with-fixed-allocation (result temp fdefn-widetag fdefn-size
)
121 (inst li temp
(make-fixup "undefined_tramp" :foreign
))
122 (storew name result fdefn-name-slot other-pointer-lowtag
)
123 (storew null-tn result fdefn-fun-slot other-pointer-lowtag
)
124 (storew temp result fdefn-raw-addr-slot other-pointer-lowtag
))))
127 (define-vop (make-closure)
128 (:args
(function :to
:save
:scs
(descriptor-reg)))
129 (:info length stack-allocate-p
)
130 (:temporary
(:scs
(non-descriptor-reg)) temp
)
131 (:results
(result :scs
(descriptor-reg)))
133 (let* ((size (+ length closure-info-offset
))
134 (alloc-size (pad-data-block size
)))
135 (pseudo-atomic (:extra
(if stack-allocate-p
0 alloc-size
))
136 (cond (stack-allocate-p
138 (inst andn result csp-tn lowtag-mask
)
139 (inst or result fun-pointer-lowtag
)
140 (inst add csp-tn alloc-size
))
142 (inst andn result alloc-tn lowtag-mask
)
143 (inst or result fun-pointer-lowtag
)))
144 (inst li temp
(logior (ash (1- size
) n-widetag-bits
) closure-header-widetag
))
145 (storew temp result
0 fun-pointer-lowtag
)
146 (storew function result closure-fun-slot fun-pointer-lowtag
)))))
148 ;;; The compiler likes to be able to directly make value cells.
149 (define-vop (make-value-cell)
150 (:args
(value :to
:save
:scs
(descriptor-reg any-reg
)))
151 (:temporary
(:scs
(non-descriptor-reg)) temp
)
152 (:info stack-allocate-p
)
153 (:ignore stack-allocate-p
)
154 (:results
(result :scs
(descriptor-reg)))
156 (with-fixed-allocation
157 (result temp value-cell-header-widetag value-cell-size
)
158 (storew value result value-cell-value-slot other-pointer-lowtag
))))
160 ;;;; Automatic allocators for primitive objects.
162 (define-vop (make-unbound-marker)
164 (:results
(result :scs
(any-reg)))
166 (inst li result unbound-marker-widetag
)))
168 (define-vop (make-funcallable-instance-tramp)
170 (:results
(result :scs
(any-reg)))
172 (inst li result
(make-fixup "funcallable_instance_tramp" :foreign
))))
174 (define-vop (fixed-alloc)
176 (:info name words type lowtag stack-allocate-p
)
177 (:ignore name stack-allocate-p
)
178 (:results
(result :scs
(descriptor-reg)))
179 (:temporary
(:scs
(non-descriptor-reg)) temp
)
181 (pseudo-atomic (:extra
(pad-data-block words
))
182 (cond ((logbitp (1- n-lowtag-bits
) lowtag
)
183 (inst or result alloc-tn lowtag
))
185 (inst andn result alloc-tn lowtag-mask
)
186 (inst or result 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
)
200 (inst add bytes extra
(* (1+ words
) n-word-bytes
))
201 (inst sll header bytes
(- n-widetag-bits
2))
202 (inst add header header
(+ (ash -
2 n-widetag-bits
) type
))
203 (inst and bytes
(lognot lowtag-mask
))
205 ;; Need to be careful if the lowtag and the pseudo-atomic flag
206 ;; are not compatible.
207 (cond ((logbitp (1- n-lowtag-bits
) lowtag
)
208 (inst or result alloc-tn lowtag
))
210 (inst andn result alloc-tn lowtag-mask
)
211 (inst or result lowtag
)))
212 (storew header result
0 lowtag
)
213 (inst add alloc-tn alloc-tn bytes
))))