1 ;;;; stuff that knows about dumping FASL files
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.
12 (in-package "SB!FASL")
13 ;;; KLUDGE: Even though we're IN-PACKAGE SB!FASL, some of the code in
14 ;;; here is awfully chummy with the SB!C package. CMU CL didn't have
15 ;;; any separation between the two packages, and a lot of tight
16 ;;; coupling remains. -- WHN 2001-06-04
18 ;;;; fasl dumper state
20 ;;; The FASL-OUTPUT structure represents everything we need to
21 ;;; know about dumping to a fasl file. (We need to objectify the
22 ;;; state because the fasdumper must be reentrant.)
23 (defstruct (fasl-output
24 #-no-ansi-print-object
25 (:print-object
(lambda (x s
)
26 (print-unreadable-object (x s
:type t
)
27 (prin1 (namestring (fasl-output-stream x
))
30 ;; the stream we dump to
31 (stream (missing-arg) :type stream
)
32 ;; scratch space for computing varint encodings
33 ;; FIXME: can't use the theoretical max of 10 bytes
34 ;; due to constraint in WRITE-VAR-INTEGER.
35 (varint-buf (make-array 10 :element-type
'(unsigned-byte 8) :fill-pointer t
))
36 ;; hashtables we use to keep track of dumped constants so that we
37 ;; can get them from the table rather than dumping them again. The
38 ;; EQUAL-TABLE is used for lists and strings, and the EQ-TABLE is
39 ;; used for everything else. We use a separate EQ table to avoid
40 ;; performance pathologies with objects for which EQUAL degenerates
41 ;; to EQL. Everything entered in the EQUAL table is also entered in
43 (equal-table (make-hash-table :test
'equal
) :type hash-table
)
44 (eq-table (make-hash-table :test
'eq
) :type hash-table
)
45 ;; Hashtable mapping a string to a list of fop-table indices of
46 ;; symbols whose name is that string. For any name as compared
47 ;; by STRING= there can be a symbol whose name is a base string
48 ;; and/or a symbol whose name is not a base string.
49 (string=-table
(make-hash-table :test
'equal
) :type hash-table
)
50 ;; the table's current free pointer: the next offset to be used
51 (table-free 0 :type index
)
52 ;; an alist (PACKAGE . OFFSET) of the table offsets for each package
53 ;; we have currently located.
54 (packages () :type list
)
55 ;; a table mapping from the ENTRY-INFO structures for dumped XEPs to
56 ;; the table offsets of the corresponding code pointers
57 (entry-table (make-hash-table :test
'eq
) :type hash-table
)
58 ;; a table holding back-patching info for forward references to XEPs.
59 ;; The key is the ENTRY-INFO structure for the XEP, and the value is
60 ;; a list of conses (<code-handle> . <offset>), where <code-handle>
61 ;; is the offset in the table of the code object needing to be
62 ;; patched, and <offset> is the offset that must be patched.
63 (patch-table (make-hash-table :test
'eq
) :type hash-table
)
64 ;; This is used to keep track of objects that we are in the process
65 ;; of dumping so that circularities can be preserved. The key is the
66 ;; object that we have previously seen, and the value is the object
67 ;; that we reference in the table to find this previously seen
68 ;; object. (The value is never NIL.)
70 ;; Except with list objects, the key and the value are always the
71 ;; same. In a list, the key will be some tail of the value.
72 (circularity-table (make-hash-table :test
'eq
) :type hash-table
)
73 ;; a hash table of structures that are allowed to be dumped. If we
74 ;; try to dump a structure that isn't in this hash table, we lose.
75 (valid-structures (make-hash-table :test
'eq
) :type hash-table
)
76 ;; DEBUG-SOURCE written at the very beginning
77 (source-info nil
:type
(or null sb
!c
::debug-source
)))
79 ;;; This structure holds information about a circularity.
80 (defstruct (circularity (:copier nil
))
81 ;; the kind of modification to make to create circularity
82 (type (missing-arg) :type
(member :rplaca
:rplacd
:svset
:struct-set
))
83 ;; the object containing circularity
85 ;; index in object for circularity
86 (index (missing-arg) :type index
)
87 ;; the object to be stored at INDEX in OBJECT. This is that the key
88 ;; that we were using when we discovered the circularity.
90 ;; the value that was associated with VALUE in the
91 ;; CIRCULARITY-TABLE. This is the object that we look up in the
92 ;; EQ-TABLE to locate VALUE.
95 ;;; a list of the CIRCULARITY structures for all of the circularities
96 ;;; detected in the current top level call to DUMP-OBJECT. Setting
97 ;;; this lobotomizes circularity detection as well, since circular
98 ;;; dumping uses the table.
99 (defvar *circularities-detected
*)
101 ;;; used to turn off the structure validation during dumping of source
103 (defvar *dump-only-valid-structures
* t
)
106 ;;; Write the byte B to the specified FASL-OUTPUT stream.
107 (defun dump-byte (b fasl-output
)
108 (declare (type (unsigned-byte 8) b
) (type fasl-output fasl-output
))
109 (write-byte b
(fasl-output-stream fasl-output
)))
111 ;; Dump a word-sized integer.
112 (defun dump-word (num fasl-output
)
113 (declare (type sb
!vm
:word num
))
114 (declare (type fasl-output fasl-output
))
115 (let ((stream (fasl-output-stream fasl-output
)))
116 (dotimes (i sb
!vm
:n-word-bytes
)
117 (write-byte (ldb (byte 8 (* 8 i
)) num
) stream
))))
119 ;; Dump a 32-bit integer.
120 (defun dump-unsigned-byte-32 (num fasl-output
)
121 (declare (type sb
!vm
:word num
))
122 (declare (type fasl-output fasl-output
))
123 (let ((stream (fasl-output-stream fasl-output
)))
125 (write-byte (ldb (byte 8 (* 8 i
)) num
) stream
))))
127 ;;; Dump NUM to the fasl stream, represented by N bytes. This works
128 ;;; for either signed or unsigned integers. There's no range checking
129 ;;; -- if you don't specify enough bytes for the number to fit, this
130 ;;; function cheerfully outputs the low bytes.
131 (defun dump-integer-as-n-bytes (num bytes fasl-output
)
132 (declare (integer num
) (type index bytes
))
133 (declare (type fasl-output fasl-output
))
134 (do ((n num
(ash n -
8))
137 (declare (type index i
))
138 (dump-byte (logand n
#xff
) fasl-output
))
141 (defun dump-varint (n fasl-output
)
142 (let ((buf (fasl-output-varint-buf fasl-output
)))
143 (setf (fill-pointer buf
) 0)
144 (write-var-integer n buf
)
145 (write-sequence buf
(fasl-output-stream fasl-output
))))
147 (defun dump-fop+operands
(fasl-output opcode arg1
148 &optional
(arg2 0 arg2p
) (arg3 0 arg3p
))
149 (declare (type (unsigned-byte 8) opcode
) (type word arg1 arg2 arg3
))
150 (let ((opcode-modifier (if (< arg1
#x10000
)
151 (if (< arg1
#x100
) 0 1)
152 (if (< arg1
(ash 1 32)) 2 3))))
153 (dump-byte (logior opcode opcode-modifier
) fasl-output
)
154 (dump-integer-as-n-bytes arg1
(ash 1 opcode-modifier
) fasl-output
)
155 (when arg2p
(dump-varint arg2 fasl-output
))
156 (when arg3p
(dump-varint arg3 fasl-output
))))
158 ;;; Setting this variable to an (UNSIGNED-BYTE 32) value causes
159 ;;; DUMP-FOP to use it as a counter and emit a FOP-NOP4 with the
160 ;;; counter value before every ordinary fop. This can make it easier
161 ;;; to follow the progress of LOAD-AS-FASL when
162 ;;; debugging/testing/experimenting.
163 #!+sb-show
(defvar *fop-nop4-count
* nil
)
164 #!+sb-show
(declaim (type (or (unsigned-byte 32) null
) *fop-nop4-count
*))
166 ;;; Dump the FOP code for the named FOP to the specified FASL-OUTPUT.
168 ;;; FIXME: This should be a function, with a compiler macro expansion
169 ;;; for the common constant-FS case. (Among other things, that'll stop
170 ;;; it from EVALing ,FILE multiple times.)
172 ;;; FIXME: Compiler macros, frozen classes, inlining, and similar
173 ;;; optimizations should be conditional on #!+SB-FROZEN.
174 (eval-when (:compile-toplevel
:execute
)
175 (#+sb-xc-host defmacro
#-sb-xc-host sb
!xc
:defmacro dump-fop
(fs-expr file
&rest args
)
176 (let* ((fs (eval fs-expr
))
177 (val (or (get fs
'opcode
)
178 (error "compiler bug: ~S is not a legal fasload operator."
180 (fop-argc (aref (car **fop-signatures
**) val
)))
182 ((not (eql (length args
) fop-argc
))
183 (error "~S takes ~D argument~:P" fs fop-argc
))
187 (when *fop-nop4-count
*
188 (dump-byte (get 'fop-nop4
'fop-code
) ,file
)
189 (dump-integer-as-n-bytes (mod (incf *fop-nop4-count
*) (expt 2 32))
191 ,(if (zerop fop-argc
)
192 `(dump-byte ,val
,file
)
193 `(dump-fop+operands
,file
,val
,@args
))))))))
195 ;;; Push the object at table offset Handle on the fasl stack.
196 (defun dump-push (handle fasl-output
)
197 (declare (type index handle
) (type fasl-output fasl-output
))
198 (dump-fop 'fop-push fasl-output handle
)
201 ;;; Pop the object currently on the fasl stack top into the table, and
202 ;;; return the table index, incrementing the free pointer.
203 (defun dump-pop (fasl-output)
205 (fasl-output-table-free fasl-output
)
206 (dump-fop 'fop-pop fasl-output
)
207 (incf (fasl-output-table-free fasl-output
))))
209 (defun dump-to-table (fasl-output)
211 (fasl-output-table-free fasl-output
)
212 (dump-fop 'fop-move-to-table fasl-output
)
213 (incf (fasl-output-table-free fasl-output
))))
215 ;;; If X is in File's EQUAL-TABLE, then push the object and return T,
217 (defun equal-check-table (x fasl-output
)
218 (declare (type fasl-output fasl-output
))
219 (let ((handle (gethash x
(fasl-output-equal-table fasl-output
))))
221 (handle (dump-push handle fasl-output
) t
)
223 (defun string-check-table (x fasl-output
)
224 (declare (type fasl-output fasl-output
)
226 (let ((handle (cdr (assoc
227 #+sb-xc-host
'base-char
; for repeatable xc fasls
228 #-sb-xc-host
(array-element-type x
)
229 (gethash x
(fasl-output-equal-table fasl-output
))))))
231 (handle (dump-push handle fasl-output
) t
)
234 ;;; These functions are called after dumping an object to save the
235 ;;; object in the table. The object (also passed in as X) must already
236 ;;; be on the top of the FOP stack.
237 (defun eq-save-object (x fasl-output
)
238 (declare (type fasl-output fasl-output
))
239 (setf (gethash x
(fasl-output-eq-table fasl-output
))
240 (dump-to-table fasl-output
))
242 (defun equal-save-object (x fasl-output
)
243 (declare (type fasl-output fasl-output
))
244 (let ((handle (dump-to-table fasl-output
)))
245 (setf (gethash x
(fasl-output-equal-table fasl-output
)) handle
)
246 (setf (gethash x
(fasl-output-eq-table fasl-output
)) handle
))
248 (defun string-save-object (x fasl-output
)
249 (declare (type fasl-output fasl-output
)
251 (let ((handle (dump-to-table fasl-output
)))
252 (push (cons #+sb-xc-host
'base-char
; repeatable xc fasls
253 #-sb-xc-host
(array-element-type x
)
255 (gethash x
(fasl-output-equal-table fasl-output
)))
256 (setf (gethash x
(fasl-output-eq-table fasl-output
)) handle
))
258 ;;; Record X in File's CIRCULARITY-TABLE. This is called on objects
259 ;;; that we are about to dump might have a circular path through them.
261 ;;; The object must not currently be in this table, since the dumper
262 ;;; should never be recursively called on a circular reference.
263 ;;; Instead, the dumping function must detect the circularity and
264 ;;; arrange for the dumped object to be patched.
265 (defun note-potential-circularity (x fasl-output
)
266 (let ((circ (fasl-output-circularity-table fasl-output
)))
267 (aver (not (gethash x circ
)))
268 (setf (gethash x circ
) x
))
271 ;;;; opening and closing fasl files
273 ;;; Open a fasl file, write its header, and return a FASL-OUTPUT
274 ;;; object for dumping to it. Some human-readable information about
275 ;;; the source code is given by the string WHERE.
276 (defun open-fasl-output (name where
)
277 (declare (type pathname name
))
278 (flet ((fasl-write-string (string stream
)
279 ;; SB-EXT:STRING-TO-OCTETS is not available while cross-compiling
281 (loop for char across string
282 do
(let ((code (char-code char
)))
283 (unless (<= 0 code
127)
285 (write-byte code stream
)))
286 ;; UTF-8 is safe to use, because +FASL-HEADER-STRING-STOP-CHAR-CODE+
287 ;; may not appear in UTF-8 encoded bytes
289 (write-sequence (string-to-octets string
:external-format
:utf-8
)
291 (let* ((stream (open name
293 :if-exists
:supersede
294 :element-type
'sb
!assem
:assembly-unit
))
295 (res (make-fasl-output :stream stream
)))
296 ;; Before the actual FASL header, write a shebang line using the current
297 ;; runtime path, so our fasls can be executed directly from the shell.
298 (when *runtime-pathname
*
299 #+sb-xc-host
(bug "Can't write shebang line") ; no #'NATIVE-PATHNAME
302 (format nil
"#!~A --script~%"
303 (native-namestring *runtime-pathname
* :as-file t
))
305 ;; Begin the header with the constant machine-readable (and
306 ;; semi-human-readable) string which is used to identify fasl files.
307 (fasl-write-string *fasl-header-string-start-string
* stream
)
308 ;; The constant string which begins the header is followed by
309 ;; arbitrary human-readable text, terminated by
310 ;; +FASL-HEADER-STRING-STOP-CHAR-CODE+.
312 (with-standard-io-syntax
313 (let ((*print-readably
* nil
)
314 (*print-pretty
* nil
))
318 using ~A version ~A~%"
320 (sb!xc
:lisp-implementation-type
)
321 (sb!xc
:lisp-implementation-version
))))
323 (dump-byte +fasl-header-string-stop-char-code
+ res
)
324 ;; Finish the header by outputting fasl file implementation,
325 ;; version, and key *FEATURES*.
326 (flet ((dump-counted-string (string)
327 ;; The count is dumped as a 32-bit unsigned-byte even on 64-bit
328 ;; platforms. This ensures that a x86-64 SBCL can gracefully
329 ;; detect an error when trying to read a x86 fasl, instead
330 ;; of choking on a ridiculously long counted string.
331 ;; -- JES, 2005-12-30
332 (dump-unsigned-byte-32 (length string
) res
)
333 (dotimes (i (length string
))
334 (dump-byte (char-code (aref string i
)) res
))))
335 (dump-counted-string (symbol-name +backend-fasl-file-implementation
+))
336 (dump-word +fasl-file-version
+ res
)
337 (dump-counted-string (sb!xc
:lisp-implementation-version
))
338 (dump-counted-string *features-affecting-fasl-format
*))
341 ;;; Close the specified FASL-OUTPUT, aborting the write if ABORT-P.
342 (defun close-fasl-output (fasl-output abort-p
)
343 (declare (type fasl-output fasl-output
))
347 (aver (zerop (hash-table-count (fasl-output-patch-table fasl-output
))))
349 (dump-fop 'fop-verify-empty-stack fasl-output
)
350 (dump-fop 'fop-verify-table-size fasl-output
)
351 (dump-word (fasl-output-table-free fasl-output
)
353 (dump-fop 'fop-end-group fasl-output
))
355 ;; That's all, folks.
356 (close (fasl-output-stream fasl-output
) :abort abort-p
)
359 ;;;; main entries to object dumping
361 ;;; This function deals with dumping objects that are complex enough
362 ;;; so that we want to cache them in the table, rather than repeatedly
363 ;;; dumping them. If the object is in the EQ-TABLE, then we push it,
364 ;;; otherwise, we do a type dispatch to a type specific dumping
365 ;;; function. The type specific branches do any appropriate
366 ;;; EQUAL-TABLE check and table entry.
368 ;;; When we go to dump the object, we enter it in the CIRCULARITY-TABLE.
369 (defun dump-non-immediate-object (x file
)
370 (let ((index (gethash x
(fasl-output-eq-table file
))))
372 (dump-push index file
))
375 (symbol (dump-symbol x file
))
377 (cond ((not (coalesce-tree-p x
))
379 (eq-save-object x file
))
380 ((not (equal-check-table x file
))
382 (equal-save-object x file
))))
385 (eq-save-object x file
))
387 (dump-structure x file
)
388 (eq-save-object x file
))
390 ;; DUMP-ARRAY (and its callees) are responsible for
391 ;; updating the EQ and EQUAL hash tables.
394 (unless (equal-check-table x file
)
396 (ratio (dump-ratio x file
))
397 (complex (dump-complex x file
))
398 (float (dump-float x file
))
399 (integer (dump-integer x file
)))
400 (equal-save-object x file
)))
401 #!+(and (not (host-feature sb-xc-host
)) sb-simd-pack
)
403 (unless (equal-check-table x file
)
404 (dump-fop 'fop-simd-pack file
)
405 (dump-integer-as-n-bytes (%simd-pack-tag x
) 8 file
)
406 (dump-integer-as-n-bytes (%simd-pack-low x
) 8 file
)
407 (dump-integer-as-n-bytes (%simd-pack-high x
) 8 file
))
408 (equal-save-object x file
))
410 ;; This probably never happens, since bad things tend to
411 ;; be detected during IR1 conversion.
412 (error "This object cannot be dumped into a fasl file:~% ~S"
416 ;;; Dump an object of any type by dispatching to the correct
417 ;;; type-specific dumping function. We pick off immediate objects,
418 ;;; symbols and magic lists here. Other objects are handled by
419 ;;; DUMP-NON-IMMEDIATE-OBJECT.
421 ;;; This is the function used for recursive calls to the fasl dumper.
422 ;;; We don't worry about creating circularities here, since it is
423 ;;; assumed that there is a top level call to DUMP-OBJECT.
424 (defun sub-dump-object (x file
)
427 (dump-non-immediate-object x file
)
428 (dump-fop 'fop-empty-list file
)))
431 (dump-fop 'fop-truth file
)
432 (dump-non-immediate-object x file
)))
433 ((fixnump x
) (dump-integer x file
))
434 ((characterp x
) (dump-character x file
))
436 (dump-non-immediate-object x file
))))
438 ;;; Dump stuff to backpatch already dumped objects. INFOS is the list
439 ;;; of CIRCULARITY structures describing what to do. The patching FOPs
440 ;;; take the value to store on the stack. We compute this value by
441 ;;; fetching the enclosing object from the table, and then CDR'ing it
443 (defun dump-circularities (infos file
)
444 (let ((table (fasl-output-eq-table file
)))
447 (let* ((value (circularity-value info
))
448 (enclosing (circularity-enclosing-object info
)))
449 (dump-push (gethash enclosing table
) file
)
450 (unless (eq enclosing value
)
451 (do ((current enclosing
(cdr current
))
454 (dump-fop 'fop-nthcdr file
)
456 (declare (type index i
)))))
458 (ecase (circularity-type info
)
459 (:rplaca
(dump-fop 'fop-rplaca file
))
460 (:rplacd
(dump-fop 'fop-rplacd file
))
461 (:svset
(dump-fop 'fop-svset file
))
462 (:struct-set
(dump-fop 'fop-structset file
)))
463 (dump-word (gethash (circularity-object info
) table
) file
)
464 (dump-word (circularity-index info
) file
))))
466 ;;; Set up stuff for circularity detection, then dump an object. All
467 ;;; shared and circular structure will be exactly preserved within a
468 ;;; single call to DUMP-OBJECT. Sharing between objects dumped by
469 ;;; separate calls is only preserved when convenient.
471 ;;; We peek at the object type so that we only pay the circular
472 ;;; detection overhead on types of objects that might be circular.
473 (defun dump-object (x file
)
474 (if (compound-object-p x
)
475 (let ((*circularities-detected
* ())
476 (circ (fasl-output-circularity-table file
)))
478 (sub-dump-object x file
)
479 (when *circularities-detected
*
480 (dump-circularities *circularities-detected
* file
)
482 (sub-dump-object x file
)))
484 ;;;; LOAD-TIME-VALUE and MAKE-LOAD-FORM support
486 ;;; Emit a funcall of the function and return the handle for the
488 (defun fasl-dump-load-time-value-lambda (fun file no-skip
)
489 (declare (type sb
!c
::clambda fun
) (type fasl-output file
))
490 (let ((handle (gethash (sb!c
::leaf-info fun
)
491 (fasl-output-entry-table file
))))
493 (dump-push handle file
)
494 ;; Can't skip MAKE-LOAD-FORM due to later references
496 (dump-fop 'fop-funcall-no-skip file
)
497 (dump-fop 'fop-funcall file
))
501 ;;; Return T iff CONSTANT has already been dumped. It's been dumped if
502 ;;; it's in the EQ table.
504 ;;; Note: historically (1) the above comment was "T iff ... has not been dumped",
505 ;;; (2) the test was was also true if the constant had been validated / was in
506 ;;; the valid objects table. This led to substructures occasionally skipping the
507 ;;; validation, and hence failing the "must have been validated" test.
508 (defun fasl-constant-already-dumped-p (constant file
)
509 (and (gethash constant
(fasl-output-eq-table file
)) t
))
511 ;;; Use HANDLE whenever we try to dump CONSTANT. HANDLE should have been
512 ;;; returned earlier by FASL-DUMP-LOAD-TIME-VALUE-LAMBDA.
513 (defun fasl-note-handle-for-constant (constant handle file
)
514 (let ((table (fasl-output-eq-table file
)))
515 (when (gethash constant table
)
516 (error "~S already dumped?" constant
))
517 (setf (gethash constant table
) handle
))
520 ;;; Note that the specified structure can just be dumped by
521 ;;; enumerating the slots.
522 (defun fasl-validate-structure (structure file
)
523 (setf (gethash structure
(fasl-output-valid-structures file
)) t
)
528 (defun dump-ratio (x file
)
529 (sub-dump-object (numerator x
) file
)
530 (sub-dump-object (denominator x
) file
)
531 (dump-fop 'fop-ratio file
))
533 (defun dump-integer (n file
)
536 (dump-fop 'fop-byte-integer file
)
537 (dump-byte (logand #xFF n
) file
))
538 ((unsigned-byte #.
(1- sb
!vm
:n-word-bits
))
539 (dump-fop 'fop-word-integer file
)
541 ((signed-byte #.sb
!vm
:n-word-bits
)
542 (dump-fop 'fop-word-integer file
)
543 (dump-integer-as-n-bytes n
#.sb
!vm
:n-word-bytes file
))
545 (let ((bytes (ceiling (1+ (integer-length n
)) 8)))
546 (dump-fop 'fop-integer file bytes
)
547 (dump-integer-as-n-bytes n bytes file
)))))
549 (defun dump-float (x file
)
552 (dump-fop 'fop-single-float file
)
553 (dump-integer-as-n-bytes (single-float-bits x
) 4 file
))
555 (dump-fop 'fop-double-float file
)
557 (declare (double-float x
))
558 (dump-integer-as-n-bytes (double-float-low-bits x
) 4 file
)
559 (dump-integer-as-n-bytes (double-float-high-bits x
) 4 file
)))
562 (dump-fop 'fop-long-float file
)
563 (dump-long-float x file
))))
565 (defun dump-complex-single-float (re im file
)
566 (declare (single-float re im
))
567 (dump-fop 'fop-complex-single-float file
)
568 (dump-integer-as-n-bytes (single-float-bits re
) 4 file
)
569 (dump-integer-as-n-bytes (single-float-bits im
) 4 file
))
571 (defun dump-complex-double-float (re im file
)
572 (declare (double-float re im
))
573 (dump-fop 'fop-complex-double-float file
)
574 (dump-integer-as-n-bytes (double-float-low-bits re
) 4 file
)
575 (dump-integer-as-n-bytes (double-float-high-bits re
) 4 file
)
576 (dump-integer-as-n-bytes (double-float-low-bits im
) 4 file
)
577 (dump-integer-as-n-bytes (double-float-high-bits im
) 4 file
))
579 (defun dump-complex-rational (re im file
)
580 (sub-dump-object re file
)
581 (sub-dump-object im file
)
582 (dump-fop 'fop-complex file
))
585 (defun dump-complex (x file
)
586 (let ((re (realpart x
))
588 (cond ((and (typep re
'single-float
)
589 (typep im
'single-float
))
590 (dump-complex-single-float re im file
))
591 ((and (typep re
'double-float
)
592 (typep im
'double-float
))
593 (dump-complex-double-float re im file
))
594 ((and (typep re
'rational
)
595 (typep im
'rational
))
596 (dump-complex-rational re im file
))
598 (bug "Complex number too complex: ~S" x
)))))
601 (defun dump-complex (x file
)
603 ((complex single-float
)
604 (dump-complex-single-float (realpart x
) (imagpart x
) file
))
605 ((complex double-float
)
606 (dump-complex-double-float (realpart x
) (imagpart x
) file
))
608 ((complex long-float
)
609 (dump-fop 'fop-complex-long-float file
)
610 (dump-long-float (realpart x
) file
)
611 (dump-long-float (imagpart x
) file
))
613 (dump-complex-rational (realpart x
) (imagpart x
) file
))))
617 ;;; Return the table index of PKG, adding the package to the table if
618 ;;; necessary. During cold load, we read the string as a normal string
619 ;;; so that we can do the package lookup at cold load time.
621 ;;; FIXME: Despite the parallelism in names, the functionality of
622 ;;; this function is not parallel to other functions DUMP-FOO, e.g.
623 ;;; DUMP-SYMBOL and DUMP-LIST. The mapping between names and behavior
624 ;;; should be made more consistent.
625 (declaim (ftype (function (package fasl-output
) index
) dump-package
))
626 (defun dump-package (pkg file
)
627 (declare (inline assoc
))
628 (cond ((cdr (assoc pkg
(fasl-output-packages file
) :test
#'eq
)))
630 (let ((s (package-name pkg
)))
631 (dump-fop 'fop-named-package-save file
(length s
))
633 (dump-base-chars-of-string (coerce s
'simple-base-string
) file
)
635 (#!+sb-unicode dump-characters-of-string
636 #!-sb-unicode dump-base-chars-of-string
637 (coerce s
'(simple-array character
(*))) file
))
638 (let ((entry (fasl-output-table-free file
)))
639 (incf (fasl-output-table-free file
))
640 (push (cons pkg entry
) (fasl-output-packages file
))
645 ;;; Dump a list, setting up patching information when there are
646 ;;; circularities. We scan down the list, checking for CDR and CAR
649 ;;; If there is a CDR circularity, we terminate the list with NIL and
650 ;;; make a CIRCULARITY notation for the CDR of the previous cons.
652 ;;; If there is no CDR circularity, then we mark the current cons and
653 ;;; check for a CAR circularity. When there is a CAR circularity, we
654 ;;; make the CAR NIL initially, arranging for the current cons to be
657 ;;; Otherwise, we recursively call the dumper to dump the current
659 (defun dump-list (list file
&optional coalesce
)
661 (not (gethash list
(fasl-output-circularity-table file
)))))
662 (let ((circ (fasl-output-circularity-table file
)))
663 (flet ((cdr-circularity (obj n
)
664 ;; COALESCE means there's no cycles
665 (let ((ref (gethash obj circ
)))
667 (push (make-circularity :type
:rplacd
671 :enclosing-object ref
)
672 *circularities-detected
*)
673 (terminate-undotted-list n file
)
675 (do* ((l list
(cdr l
))
679 (terminate-undotted-list n file
))
681 (cond ((cdr-circularity l n
))
683 (sub-dump-object l file
)
684 (terminate-dotted-list n file
))))))
685 (declare (type index n
))
686 (when (cdr-circularity l n
)
689 (setf (gethash l circ
) list
)
692 (ref (gethash obj circ
)))
694 (push (make-circularity :type
:rplaca
698 :enclosing-object ref
)
699 *circularities-detected
*)
700 (sub-dump-object nil file
))
701 ;; Avoid coalescing if COALESCE-TREE-P decided not to
703 ;; This is the same as DUMP-NON-IMMEDIATE-OBJECT but
704 ;; without calling COALESCE-TREE-P again.
705 (let ((index (gethash obj
(fasl-output-eq-table file
))))
707 (dump-push index file
))
710 (eq-save-object obj file
))
711 ((not (equal-check-table obj file
))
712 (dump-list obj file t
)
713 (equal-save-object obj file
)))))
715 (sub-dump-object obj file
))))))))
717 (defun terminate-dotted-list (n file
)
718 (declare (type index n
) (type fasl-output file
))
720 (1 (dump-fop 'fop-list
*-
1 file
))
721 (2 (dump-fop 'fop-list
*-
2 file
))
722 (3 (dump-fop 'fop-list
*-
3 file
))
723 (4 (dump-fop 'fop-list
*-
4 file
))
724 (5 (dump-fop 'fop-list
*-
5 file
))
725 (6 (dump-fop 'fop-list
*-
6 file
))
726 (7 (dump-fop 'fop-list
*-
7 file
))
727 (8 (dump-fop 'fop-list
*-
8 file
))
728 (t (do ((nn n
(- nn
255)))
730 (dump-fop 'fop-list
* file
)
732 (declare (type index nn
))
733 (dump-fop 'fop-list
* file
)
734 (dump-byte 255 file
)))))
736 ;;; If N > 255, must build list with one LIST operator, then LIST*
739 (defun terminate-undotted-list (n file
)
740 (declare (type index n
) (type fasl-output file
))
742 (1 (dump-fop 'fop-list-1 file
))
743 (2 (dump-fop 'fop-list-2 file
))
744 (3 (dump-fop 'fop-list-3 file
))
745 (4 (dump-fop 'fop-list-4 file
))
746 (5 (dump-fop 'fop-list-5 file
))
747 (6 (dump-fop 'fop-list-6 file
))
748 (7 (dump-fop 'fop-list-7 file
))
749 (8 (dump-fop 'fop-list-8 file
))
751 (dump-fop 'fop-list file
)
753 (t (dump-fop 'fop-list file
)
755 (do ((nn (- n
255) (- nn
255)))
757 (dump-fop 'fop-list
* file
)
759 (declare (type index nn
))
760 (dump-fop 'fop-list
* file
)
761 (dump-byte 255 file
)))))))
765 ;;; Dump the array thing.
766 (defun dump-array (x file
)
769 #-sb-xc-host
(dump-multi-dim-array x file
)
770 #+sb-xc-host
(bug "Can't dump multi-dim array")))
772 ;;; Dump the vector object. If it's not simple, then actually dump a
773 ;;; simple version of it. But we enter the original in the EQ or EQUAL
775 (defun dump-vector (x file
)
776 (let ((simple-version (if (array-header-p x
)
777 (coerce x
`(simple-array
778 ,(array-element-type x
)
781 (typecase simple-version
784 (unless (string-check-table x file
)
785 (dump-simple-base-string simple-version file
)
786 (string-save-object x file
)))
789 (unless (string-check-table x file
)
790 (dump-simple-base-string simple-version file
)
791 (string-save-object x file
)))
793 ((simple-array character
(*))
795 (unless (string-check-table x file
)
796 (dump-simple-character-string simple-version file
)
797 (string-save-object x file
))
799 (bug "how did we get here?"))
801 ;; xc-host may upgrade anything to T, so pre-check that it
802 ;; wasn't actually supposed to be a specialized array,
803 ;; and in case a copy was made, tell DUMP-S-V the original type.
805 ((neq (!specialized-array-element-type x
) t
)
806 (dump-specialized-vector (!specialized-array-element-type x
)
807 simple-version file
))
809 (dump-simple-vector simple-version file
)))
810 (eq-save-object x file
))
812 ;; Host may have a different specialization, which is ok in itself,
813 ;; but again we might have have copied the vector, losing the type.
814 (dump-specialized-vector
815 #+sb-xc-host
(!specialized-array-element-type x
) simple-version file
)
816 (eq-save-object x file
)))))
818 ;;; Dump a SIMPLE-VECTOR, handling any circularities.
819 (defun dump-simple-vector (v file
)
820 (declare (type simple-vector v
) (type fasl-output file
))
821 (note-potential-circularity v file
)
822 (do ((index 0 (1+ index
))
824 (circ (fasl-output-circularity-table file
)))
826 (dump-fop 'fop-vector file length
))
827 (let* ((obj (aref v index
))
828 (ref (gethash obj circ
)))
830 (push (make-circularity :type
:svset
834 :enclosing-object ref
)
835 *circularities-detected
*)
836 (sub-dump-object nil file
))
838 (sub-dump-object obj file
))))))
840 ;;; In the grand scheme of things I don't pretend to understand any
841 ;;; more how this works, or indeed whether. But to write out specialized
842 ;;; vectors in the same format as fop-spec-vector expects to read them
843 ;;; we need to be target-endian. dump-integer-as-n-bytes always writes
844 ;;; little-endian (which is correct for all other integers) so for a bigendian
845 ;;; target we need to swap octets -- CSR, after DB
846 ;;; We sanity-check that VECTOR was registered as a specializd array.
847 ;;; Slight problem: if the host upgraded an array to T and we wanted it
848 ;;; more specialized, this would be undetected because the check is that
849 ;;; _if_ the array is specialized, _then_ it must have been registered.
850 ;;; The reverse is always true. But we wouldn't get here at all for (array T).
851 ;;; As a practical matter, silent failure is unlikely because
852 ;;; when building SBCL in SBCL, the needed specializations exist,
853 ;;; so the sanity-check will be triggered, and we can fix the source.
855 (defun dump-specialized-vector (element-type vector file
856 &key data-only
) ; basically unused now
857 (labels ((octet-swap (word bits
)
858 "BITS must be a multiple of 8"
859 (do ((input word
(ash input -
8))
860 (output 0 (logior (ash output
8) (logand input
#xff
)))
861 (bits bits
(- bits
8)))
862 ((<= bits
0) output
)))
863 (dump-unsigned-vector (widetag bytes bits
)
865 (dump-fop 'fop-spec-vector file
)
866 (dump-word (length vector
) file
)
867 (dump-byte widetag file
))
869 (dump-integer-as-n-bytes
870 (ecase sb
!c
:*backend-byte-order
*
872 (:big-endian
(octet-swap i bits
))) ; signed or unsigned OK
875 ((listp element-type
)
876 (destructuring-bind (type-id bits
) element-type
877 (dump-unsigned-vector
881 (8 sb
!vm
:simple-array-signed-byte-8-widetag
)
882 (16 sb
!vm
:simple-array-signed-byte-16-widetag
)
883 (32 sb
!vm
:simple-array-signed-byte-32-widetag
)
885 (64 sb
!vm
:simple-array-signed-byte-64-widetag
)))
888 (8 sb
!vm
:simple-array-unsigned-byte-8-widetag
)
889 (16 sb
!vm
:simple-array-unsigned-byte-16-widetag
)
890 (32 sb
!vm
:simple-array-unsigned-byte-32-widetag
)
892 (64 sb
!vm
:simple-array-unsigned-byte-64-widetag
))))
893 (/ bits sb
!vm
:n-byte-bits
)
895 ((typep vector
'(simple-bit-vector 0))
896 ;; NIL bits+bytes are ok- DUMP-INTEGER-AS-N-BYTES is unreachable.
897 ;; Otherwise we'd need to fill up octets using an ash/logior loop.
898 (dump-unsigned-vector sb
!vm
:simple-bit-vector-widetag nil nil
))
899 ((and (typep vector
'(vector * 0)) data-only
)
900 nil
) ; empty vector and data-only => nothing to do
901 ((typep vector
'(vector (unsigned-byte 8)))
902 ;; FIXME: eliminate this case, falling through to ERROR.
904 "Unportably dumping (ARRAY (UNSIGNED-BYTE 8)) ~S" vector
)
905 (dump-unsigned-vector sb
!vm
:simple-array-unsigned-byte-8-widetag
1 8))
907 (error "Won't dump specialized array ~S" vector
)))))
910 (defun dump-specialized-vector (vector file
&key data-only
)
911 ;; The DATA-ONLY option was for the now-obsolete trace-table,
912 ;; but it seems like a good option to keep around.
913 (declare (type (simple-unboxed-array (*)) vector
))
914 (let* ((length (length vector
))
915 (widetag (%other-pointer-widetag vector
))
916 (bits-per-length (aref **saetp-bits-per-length
** widetag
)))
917 (aver (< bits-per-length
255))
919 (dump-fop 'fop-spec-vector file
)
920 (dump-word length file
)
921 (dump-byte widetag file
))
922 (dump-raw-bytes vector
923 (ceiling (* length bits-per-length
) sb
!vm
:n-byte-bits
)
926 ;;; Dump characters and string-ish things.
928 (defun dump-character (char file
)
929 (dump-fop 'fop-character file
(sb!xc
:char-code char
)))
931 (defun dump-base-chars-of-string (s fasl-output
)
932 (declare #+sb-xc-host
(type simple-string s
)
933 #-sb-xc-host
(type simple-base-string s
)
934 (type fasl-output fasl-output
))
936 (dump-byte (sb!xc
:char-code c
) fasl-output
))
940 ;;; Dump a SIMPLE-BASE-STRING.
941 (defun dump-simple-base-string (s file
)
942 #+sb-xc-host
(declare (type simple-string s
))
943 #-sb-xc-host
(declare (type simple-base-string s
))
944 (dump-fop 'fop-base-string file
(length s
))
945 (dump-base-chars-of-string s file
)
948 ;;; If we get here, it is assumed that the symbol isn't in the table,
949 ;;; but we are responsible for putting it there when appropriate.
950 (defun dump-symbol (s file
)
951 (declare (type fasl-output file
))
952 (let* ((pname (symbol-name s
))
953 (pname-length (length pname
))
954 (base-string-p (typep pname
(or #-sb-xc-host
'base-string t
)))
955 (length+flag
(logior (ash pname-length
1) (if base-string-p
1 0)))
957 (pkg (symbol-package s
)))
958 ;; see comment in genesis: we need this here for repeatable fasls
960 (multiple-value-bind (cl-symbol cl-status
)
961 (find-symbol (symbol-name s
) sb
!int
:*cl-package
*)
962 (when (and (eq s cl-symbol
)
963 (eq cl-status
:external
))
964 ;; special case, to work around possible xc host "design
965 ;; choice" weirdness in COMMON-LISP package
966 (setq pkg sb
!int
:*cl-package
*)))
969 (let ((this-base-p base-string-p
))
970 (dolist (lookalike (gethash pname
(fasl-output-string=-table file
))
971 (dump-fop 'fop-uninterned-symbol-save
973 ;; Find the right kind of lookalike symbol.
974 ;; [what about a symbol whose name is a (simple-array nil (0))?]
977 #-sb-xc-host
(typep (symbol-name lookalike
) 'base-string
)))
978 (when (or (and this-base-p that-base-p
)
979 (and (not this-base-p
) (not that-base-p
)))
980 (dump-fop 'fop-copy-symbol-save file
981 (gethash lookalike
(fasl-output-eq-table file
)))
982 (return (setq dumped-as-copy t
)))))))
983 ((eq pkg sb
!int
:*cl-package
*)
984 (dump-fop 'fop-lisp-symbol-save file length
+flag
))
985 ((eq pkg sb
!int
:*keyword-package
*)
986 (dump-fop 'fop-keyword-symbol-save file length
+flag
))
988 (let ((pkg-index (dump-package pkg file
)))
989 (dump-fop 'fop-symbol-in-package-save file
990 length
+flag pkg-index
))))
992 (unless dumped-as-copy
993 (funcall (if base-string-p
994 'dump-base-chars-of-string
995 'dump-characters-of-string
)
997 (push s
(gethash (symbol-name s
) (fasl-output-string=-table file
))))
999 (setf (gethash s
(fasl-output-eq-table file
))
1000 (fasl-output-table-free file
))
1002 (incf (fasl-output-table-free file
)))
1006 ;;;; component (function) dumping
1008 (defun dump-segment (segment code-length fasl-output
)
1009 (declare (type sb
!assem
:segment segment
)
1010 (type fasl-output fasl-output
))
1011 (let* ((stream (fasl-output-stream fasl-output
))
1012 (n-written (write-segment-contents segment stream
)))
1013 ;; In CMU CL there was no enforced connection between the CODE-LENGTH
1014 ;; argument and the number of bytes actually written. I added this
1015 ;; assertion while trying to debug portable genesis. -- WHN 19990902
1016 (unless (= code-length n-written
)
1017 (bug "code-length=~W, n-written=~W" code-length n-written
)))
1020 ;;; Dump all the fixups. Currently there are three flavors of fixup:
1021 ;;; - assembly routines: named by a symbol
1022 ;;; - foreign (C) symbols: named by a string
1023 ;;; - code object references: don't need a name.
1024 (defun dump-fixups (fixups fasl-output
)
1025 (declare (list fixups
) (type fasl-output fasl-output
))
1026 (dolist (note fixups
)
1027 (let* ((kind (fixup-note-kind note
))
1028 (fixup (fixup-note-fixup note
))
1029 (position (fixup-note-position note
))
1030 (name (fixup-name fixup
))
1031 (flavor (fixup-flavor fixup
)))
1032 (dump-object kind fasl-output
)
1033 ;; Depending on the flavor, we may have various kinds of
1034 ;; noise before the position.
1037 (aver (symbolp name
))
1038 (dump-object name fasl-output
)
1039 (dump-fop 'fop-assembler-fixup fasl-output
))
1040 ((:foreign
:foreign-dataref
)
1041 (aver (stringp name
))
1044 (dump-fop 'fop-foreign-fixup fasl-output
))
1047 (dump-fop 'fop-foreign-dataref-fixup fasl-output
)))
1048 (let ((len (length name
)))
1049 (aver (< len
256)) ; (limit imposed by fop definition)
1050 (dump-byte len fasl-output
)
1052 (dump-byte (char-code (schar name i
)) fasl-output
))))
1055 (dump-fop 'fop-code-object-fixup fasl-output
))
1058 (dump-non-immediate-object (classoid-name (layout-classoid name
))
1060 (dump-fop 'fop-layout-fixup fasl-output
))
1063 (dump-non-immediate-object (the symbol name
) fasl-output
)
1064 (dump-fop 'fop-immobile-obj-fixup fasl-output
))
1067 (dump-non-immediate-object name fasl-output
)
1068 (dump-fop 'fop-named-call-fixup fasl-output
))
1071 (dump-non-immediate-object name fasl-output
)
1072 (dump-fop 'fop-static-call-fixup fasl-output
))
1074 (aver (symbolp name
))
1075 (dump-non-immediate-object name fasl-output
)
1076 (dump-fop 'fop-symbol-tls-fixup fasl-output
)))
1077 ;; No matter what the flavor, we'll always dump the position
1078 (dump-word position fasl-output
)))
1081 ;;; Dump out the constant pool and code-vector for component, push the
1082 ;;; result in the table, and return the offset.
1084 ;;; The only tricky thing is handling constant-pool references to
1085 ;;; functions. If we have already dumped the function, then we just
1086 ;;; push the code pointer. Otherwise, we must create back-patching
1087 ;;; information so that the constant will be set when the function is
1088 ;;; eventually dumped. This is a bit awkward, since we don't have the
1089 ;;; handle for the code object being dumped while we are dumping its
1092 ;;; We dump trap objects in any unused slots or forward referenced slots.
1093 (defun dump-code-object (component code-segment code-length fixups
1094 fasl-output entry-offsets
)
1095 (declare (type component component
)
1096 (type index code-length
)
1097 (type fasl-output fasl-output
))
1098 (let* ((2comp (component-info component
))
1099 (constants (sb!c
:ir2-component-constants
2comp
))
1100 (header-length (length constants
)))
1101 (collect ((patches))
1102 ;; Dump the constants, noting any :ENTRY constants that have to
1104 (loop for i from sb
!vm
:code-constants-offset below header-length do
1105 (let ((entry (aref constants i
)))
1108 (dump-object (sb!c
::constant-value entry
) fasl-output
))
1112 (let* ((info (sb!c
::leaf-info
(cdr entry
)))
1113 (handle (gethash info
1114 (fasl-output-entry-table
1116 (declare (type sb
!c
::entry-info info
))
1119 (dump-push handle fasl-output
))
1121 (patches (cons info i
))
1122 (dump-fop 'fop-misc-trap fasl-output
)))))
1124 (dump-push (cdr entry
) fasl-output
))
1126 (dump-object (cdr entry
) fasl-output
)
1127 (dump-fop 'fop-fdefn fasl-output
))
1129 (dump-object (cdr entry
) fasl-output
)
1130 (dump-fop 'fop-known-fun fasl-output
))))
1132 (dump-fop 'fop-misc-trap fasl-output
)))))
1134 ;; Dump the debug info.
1135 (let ((info (sb!c
::debug-info-for-component component
))
1136 (*dump-only-valid-structures
* nil
))
1137 (setf (sb!c
::debug-info-source info
)
1138 (fasl-output-source-info fasl-output
))
1139 (dump-object info fasl-output
))
1141 (dump-object (if (eq (sb!c
::component-kind component
) :toplevel
) :toplevel nil
)
1143 (dump-fop 'fop-code fasl-output code-length
1144 (- header-length sb
!vm
:code-constants-offset
)
1145 (length entry-offsets
))
1147 (dump-segment code-segment code-length fasl-output
)
1148 (dolist (val entry-offsets
) (dump-varint val fasl-output
))
1150 ;; DUMP-FIXUPS does its own internal DUMP-FOPs: the bytes it
1151 ;; dumps aren't included in the LENGTH passed to FOP-CODE.
1152 (dump-fixups fixups fasl-output
)
1154 #!-
(or x86
(and x86-64
(not immobile-space
)))
1155 (dump-fop 'fop-sanctify-for-execution fasl-output
)
1157 (let ((handle (dump-pop fasl-output
)))
1158 (dolist (patch (patches))
1159 (push (cons handle
(cdr patch
))
1160 (gethash (car patch
)
1161 (fasl-output-patch-table fasl-output
))))
1164 ;;; This is only called from assemfile, which doesn't exist in the target.
1166 (defun dump-assembler-routines (code-segment length fixups routines file
)
1167 (dump-fop 'fop-assembler-code file
)
1168 (dump-word length file
)
1169 (write-segment-contents code-segment
(fasl-output-stream file
))
1170 (dolist (routine routines
)
1171 (dump-object (car routine
) file
)
1172 (dump-fop 'fop-assembler-routine file
)
1173 (dump-word (+ (label-position (cadr routine
))
1176 (dump-fixups fixups file
)
1178 (dump-fop 'fop-sanctify-for-execution file
)
1181 ;;; Alter the code object referenced by CODE-HANDLE at the specified
1182 ;;; OFFSET, storing the object referenced by ENTRY-HANDLE.
1183 (defun dump-alter-code-object (code-handle offset entry-handle file
)
1184 (declare (type index code-handle entry-handle offset
))
1185 (declare (type fasl-output file
))
1186 (dump-push code-handle file
)
1187 (dump-push entry-handle file
)
1188 (dump-fop 'fop-alter-code file offset
)
1191 ;;; Dump the code, constants, etc. for component. We pass in the
1192 ;;; assembler fixups, code vector and node info.
1193 (defun fasl-dump-component (component
1198 (declare (type component component
))
1199 (declare (type fasl-output file
))
1201 (dump-fop 'fop-verify-table-size file
)
1202 (dump-word (fasl-output-table-free file
) file
)
1205 (let ((info (sb!c
::ir2-component-dyncount-info
(component-info component
))))
1207 (fasl-validate-structure info file
)))
1209 (let* ((2comp (component-info component
))
1210 (entries (sb!c
::ir2-component-entries
2comp
))
1211 (nfuns (length entries
))
1212 (code-handle (dump-code-object
1213 component code-segment code-length
1215 (mapcar (lambda (entry)
1216 (label-position (sb!c
::entry-info-offset entry
)))
1220 (dolist (entry entries
)
1221 (dump-push code-handle file
)
1222 (dump-object (sb!c
::entry-info-name entry
) file
)
1223 (dump-object (sb!c
::entry-info-arguments entry
) file
)
1224 (dump-object (sb!c
::entry-info-type entry
) file
)
1225 (dump-object (sb!c
::entry-info-info entry
) file
)
1226 (dump-fop 'fop-fun-entry file
(decf fun-index
))
1227 (let ((entry-handle (dump-pop file
)))
1228 (setf (gethash entry
(fasl-output-entry-table file
)) entry-handle
)
1229 (let ((old (gethash entry
(fasl-output-patch-table file
))))
1232 (dump-alter-code-object (car patch
)
1236 (remhash entry
(fasl-output-patch-table file
)))))))
1239 (defun dump-push-previously-dumped-fun (fun fasl-output
)
1240 (declare (type sb
!c
::clambda fun
))
1241 (let ((handle (gethash (sb!c
::leaf-info fun
)
1242 (fasl-output-entry-table fasl-output
))))
1244 (dump-push handle fasl-output
))
1247 ;;; Dump a FOP-FUNCALL to call an already-dumped top level lambda at
1249 (defun fasl-dump-toplevel-lambda-call (fun fasl-output
)
1250 (declare (type sb
!c
::clambda fun
))
1251 (dump-push-previously-dumped-fun fun fasl-output
)
1252 (dump-fop 'fop-funcall-for-effect fasl-output
)
1253 (dump-byte 0 fasl-output
)
1256 ;;;; dumping structures
1258 ;; Having done nothing more than load all files in obj/from-host, the
1259 ;; cross-compiler running under any host Lisp begins life able to access
1260 ;; SBCL-format metadata for any structure that is a subtype of STRUCTURE!OBJECT.
1261 ;; But if it learns a layout by cross-compiling a DEFSTRUCT, that's ok too.
1262 (defun dump-structure (struct file
)
1263 (when (and *dump-only-valid-structures
*
1264 (not (gethash struct
(fasl-output-valid-structures file
))))
1265 (error "attempt to dump invalid structure:~% ~S~%How did this happen?"
1267 (note-potential-circularity struct file
)
1268 (do* ((length (%instance-length struct
))
1269 (layout (%instance-layout struct
))
1270 (bitmap (layout-bitmap layout
))
1271 (circ (fasl-output-circularity-table file
))
1272 (index sb
!vm
:instance-data-start
(1+ index
)))
1274 (dump-non-immediate-object layout file
)
1275 (dump-fop 'fop-struct file length
))
1276 (let* ((obj (if (logbitp index bitmap
)
1277 (%instance-ref struct index
)
1278 (%raw-instance-ref
/word struct index
)))
1279 (ref (gethash obj circ
)))
1280 (sub-dump-object (cond (ref
1281 (push (make-circularity :type
:struct-set
1285 :enclosing-object ref
)
1286 *circularities-detected
*)
1291 (defun dump-layout (obj file
)
1292 (when (layout-invalid obj
)
1293 (compiler-error "attempt to dump reference to obsolete class: ~S"
1294 (layout-classoid obj
)))
1295 (let ((name (classoid-name (layout-classoid obj
))))
1296 ;; Q: Shouldn't we aver that NAME is the proper name for its classoid?
1298 (compiler-error "dumping anonymous layout: ~S" obj
))
1299 ;; The target lisp can save some space in fasls (sometimes),
1300 ;; but the cross-compiler can't because we need to construct the
1301 ;; cold representation of all layouts, not reference host layouts.
1303 (let ((fop (known-layout-fop name
)))
1305 (return-from dump-layout
(dump-byte fop file
))))
1306 (dump-object name file
))
1307 (sub-dump-object (layout-inherits obj
) file
)
1308 (sub-dump-object (layout-depthoid obj
) file
)
1309 (sub-dump-object (layout-length obj
) file
)
1310 (sub-dump-object (layout-bitmap obj
) file
)
1311 (dump-fop 'fop-layout file
))