1 ;;;; machine-independent aspects of the object representation
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.
14 ;;;; the primitive objects themselves
16 (define-primitive-object (cons :lowtag list-pointer-type
18 (car :ref-trans car :set-trans sb!c::%rplaca :init :arg)
19 (cdr :ref-trans cdr :set-trans sb!c::%rplacd :init :arg))
21 (define-primitive-object (instance :lowtag instance-pointer-type
22 :header instance-header-type
23 :alloc-trans %make-instance)
26 (define-primitive-object (bignum :lowtag other-pointer-type
28 :alloc-trans sb!bignum::%allocate-bignum)
29 (digits :rest-p t :c-type #!-alpha "long" #!+alpha "u32"))
31 (define-primitive-object (ratio :type ratio
32 :lowtag other-pointer-type
34 :alloc-trans %make-ratio)
35 (numerator :type integer
36 :ref-known (flushable movable)
39 (denominator :type integer
40 :ref-known (flushable movable)
41 :ref-trans %denominator
44 (define-primitive-object (single-float :lowtag other-pointer-type
45 :header single-float-type)
46 (value :c-type "float"))
48 (define-primitive-object (double-float :lowtag other-pointer-type
49 :header double-float-type)
51 (value :c-type "double" :length 2))
54 (define-primitive-object (long-float :lowtag other-pointer-type
55 :header long-float-type)
57 (value :c-type "long double" :length #!+x86 3 #!+sparc 4))
59 (define-primitive-object (complex :type complex
60 :lowtag other-pointer-type
62 :alloc-trans %make-complex)
64 :ref-known (flushable movable)
68 :ref-known (flushable movable)
72 (define-primitive-object (array :lowtag other-pointer-type
74 (fill-pointer :type index
75 :ref-trans %array-fill-pointer
76 :ref-known (flushable foldable)
77 :set-trans (setf %array-fill-pointer)
79 (fill-pointer-p :type (member t nil)
80 :ref-trans %array-fill-pointer-p
81 :ref-known (flushable foldable)
82 :set-trans (setf %array-fill-pointer-p)
85 :ref-trans %array-available-elements
86 :ref-known (flushable foldable)
87 :set-trans (setf %array-available-elements)
90 :ref-trans %array-data-vector
91 :ref-known (flushable foldable)
92 :set-trans (setf %array-data-vector)
94 (displacement :type (or index null)
95 :ref-trans %array-displacement
96 :ref-known (flushable foldable)
97 :set-trans (setf %array-displacement)
99 (displaced-p :type (member t nil)
100 :ref-trans %array-displaced-p
101 :ref-known (flushable foldable)
102 :set-trans (setf %array-displaced-p)
104 (dimensions :rest-p t))
106 (define-primitive-object (vector :type vector
107 :lowtag other-pointer-type
109 (length :ref-trans sb!c::vector-length
111 (data :rest-p t :c-type #!-alpha "unsigned long" #!+alpha "u32"))
113 (define-primitive-object (code :type code-component
114 :lowtag other-pointer-type
116 (code-size :type index
117 :ref-known (flushable movable)
118 :ref-trans %code-code-size)
119 (entry-points :type (or function null)
120 :ref-known (flushable)
121 :ref-trans %code-entry-points
123 :set-trans (setf %code-entry-points))
125 :ref-known (flushable)
126 :ref-trans %code-debug-info
128 :set-trans (setf %code-debug-info))
130 (constants :rest-p t))
132 (define-primitive-object (fdefn :type fdefn
133 :lowtag other-pointer-type
135 (name :ref-trans fdefn-name)
136 (function :type (or function null) :ref-trans fdefn-function)
137 (raw-addr :c-type #!-alpha "char *" #!+alpha "u32"))
139 (define-primitive-object (function :type function
140 :lowtag function-pointer-type
141 :header function-header-type)
142 #!-gengc (self :ref-trans %function-self :set-trans (setf %function-self))
143 #!+gengc (entry-point :c-type "char *")
144 (next :type (or function null)
145 :ref-known (flushable)
146 :ref-trans %function-next
148 :set-trans (setf %function-next))
149 (name :ref-known (flushable)
150 :ref-trans %function-name
152 :set-trans (setf %function-name))
153 (arglist :ref-known (flushable)
154 :ref-trans %function-arglist
156 :set-trans (setf %function-arglist))
157 (type :ref-known (flushable)
158 :ref-trans %function-type
160 :set-trans (setf %function-type))
161 (code :rest-p t :c-type "unsigned char"))
164 (define-primitive-object (return-pc :lowtag other-pointer-type :header t)
165 (return-point :c-type "unsigned char" :rest-p t))
167 (define-primitive-object (closure :lowtag function-pointer-type
168 :header closure-header-type)
169 #!-gengc (function :init :arg :ref-trans %closure-function)
170 #!+gengc (entry-point :c-type "char *")
173 (define-primitive-object (funcallable-instance
174 :lowtag function-pointer-type
175 :header funcallable-instance-header-type
176 :alloc-trans %make-funcallable-instance)
179 :ref-known (flushable) :ref-trans %funcallable-instance-function
180 :set-known (unsafe) :set-trans (setf %funcallable-instance-function))
181 #!+gengc (entry-point :c-type "char *")
182 (lexenv :ref-known (flushable) :ref-trans %funcallable-instance-lexenv
183 :set-known (unsafe) :set-trans (setf %funcallable-instance-lexenv))
185 :ref-known (flushable) :ref-trans %funcallable-instance-layout
186 :set-known (unsafe) :set-trans (setf %funcallable-instance-layout))
189 (define-primitive-object (value-cell :lowtag other-pointer-type
190 :header value-cell-header-type
191 :alloc-trans make-value-cell)
192 (value :set-trans value-cell-set
194 :ref-trans value-cell-ref
195 :ref-known (flushable)
199 (define-primitive-object (sap :lowtag other-pointer-type
202 (pointer :c-type "char *" :length 2))
205 (define-primitive-object (sap :lowtag other-pointer-type
207 (pointer :c-type "char *"))
210 (define-primitive-object (weak-pointer :type weak-pointer
211 :lowtag other-pointer-type
212 :header weak-pointer-type
213 :alloc-trans make-weak-pointer)
214 (value :ref-trans sb!c::%weak-pointer-value :ref-known (flushable)
216 (broken :type (member t nil)
217 :ref-trans sb!c::%weak-pointer-broken :ref-known (flushable)
219 (next :c-type #!-alpha "struct weak_pointer *" #!+alpha "u32"))
221 ;;;; other non-heap data blocks
223 (define-primitive-object (binding)
227 (define-primitive-object (unwind-block)
228 (current-uwp :c-type #!-alpha "struct unwind_block *" #!+alpha "u32")
229 (current-cont :c-type #!-alpha "lispobj *" #!+alpha "u32")
233 (define-primitive-object (catch-block)
234 (current-uwp :c-type #!-alpha "struct unwind_block *" #!+alpha "u32")
235 (current-cont :c-type #!-alpha "lispobj *" #!+alpha "u32")
239 (previous-catch :c-type #!-alpha "struct catch_block *" #!+alpha "u32")
242 ;;; (For an explanation of this, see the comments at the definition of
243 ;;; KLUDGE-NONDETERMINISTIC-CATCH-BLOCK-SIZE.)
244 (aver (= sb!vm::kludge-nondeterministic-catch-block-size catch-block-size))
249 (defknown %make-symbol (index simple-string) symbol
253 (defknown symbol-hash (symbol) index
257 (defknown symbol-hash (symbol) (integer 0 #.*target-most-positive-fixnum*)
260 (define-primitive-object (symbol :lowtag other-pointer-type
261 :header symbol-header-type
263 #!-(or gengc x86) make-symbol
264 #!+gengc %make-symbol)
265 (value :set-trans %set-symbol-value
267 #!-(or gengc x86) unused
268 #!+gengc (hash :init :arg)
270 (plist :ref-trans symbol-plist
271 :set-trans %set-symbol-plist
273 (name :ref-trans symbol-name :init :arg)
274 (package :ref-trans symbol-package
275 :set-trans %set-symbol-package
278 (define-primitive-object (complex-single-float
279 :lowtag other-pointer-type
280 :header complex-single-float-type)
281 (real :c-type "float")
282 (imag :c-type "float"))
284 (define-primitive-object (complex-double-float
285 :lowtag other-pointer-type
286 :header complex-double-float-type)
288 (real :c-type "double" :length 2)
289 (imag :c-type "double" :length 2))
292 (define-primitive-object (complex-long-float
293 :lowtag other-pointer-type
294 :header complex-long-float-type)
296 (real :c-type "long double" :length #!+x86 3 #!+sparc 4)
297 (imag :c-type "long double" :length #!+x86 3 #!+sparc 4))