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 ;; hashtables we use to keep track of dumped constants so that we
33 ;; can get them from the table rather than dumping them again. The
34 ;; EQUAL-TABLE is used for lists and strings, and the EQ-TABLE is
35 ;; used for everything else. We use a separate EQ table to avoid
36 ;; performance pathologies with objects for which EQUAL degenerates
37 ;; to EQL. Everything entered in the EQUAL table is also entered in
39 (equal-table (make-hash-table :test 'equal) :type hash-table)
40 (eq-table (make-hash-table :test 'eq) :type hash-table)
41 ;; the table's current free pointer: the next offset to be used
42 (table-free 0 :type index)
43 ;; an alist (PACKAGE . OFFSET) of the table offsets for each package
44 ;; we have currently located.
45 (packages () :type list)
46 ;; a table mapping from the ENTRY-INFO structures for dumped XEPs to
47 ;; the table offsets of the corresponding code pointers
48 (entry-table (make-hash-table :test 'eq) :type hash-table)
49 ;; a table holding back-patching info for forward references to XEPs.
50 ;; The key is the ENTRY-INFO structure for the XEP, and the value is
51 ;; a list of conses (<code-handle> . <offset>), where <code-handle>
52 ;; is the offset in the table of the code object needing to be
53 ;; patched, and <offset> is the offset that must be patched.
54 (patch-table (make-hash-table :test 'eq) :type hash-table)
55 ;; a list of the table handles for all of the DEBUG-INFO structures
56 ;; dumped in this file. These structures must be back-patched with
57 ;; source location information when the compilation is complete.
58 (debug-info () :type list)
59 ;; This is used to keep track of objects that we are in the process
60 ;; of dumping so that circularities can be preserved. The key is the
61 ;; object that we have previously seen, and the value is the object
62 ;; that we reference in the table to find this previously seen
63 ;; object. (The value is never NIL.)
65 ;; Except with list objects, the key and the value are always the
66 ;; same. In a list, the key will be some tail of the value.
67 (circularity-table (make-hash-table :test 'eq) :type hash-table)
68 ;; a hash table of structures that are allowed to be dumped. If we
69 ;; try to dump a structure that isn't in this hash table, we lose.
70 (valid-structures (make-hash-table :test 'eq) :type hash-table))
72 ;;; This structure holds information about a circularity.
73 (defstruct (circularity (:copier nil))
74 ;; the kind of modification to make to create circularity
75 (type (missing-arg) :type (member :rplaca :rplacd :svset :struct-set))
76 ;; the object containing circularity
78 ;; index in object for circularity
79 (index (missing-arg) :type index)
80 ;; the object to be stored at INDEX in OBJECT. This is that the key
81 ;; that we were using when we discovered the circularity.
83 ;; the value that was associated with VALUE in the
84 ;; CIRCULARITY-TABLE. This is the object that we look up in the
85 ;; EQ-TABLE to locate VALUE.
88 ;;; a list of the CIRCULARITY structures for all of the circularities
89 ;;; detected in the current top level call to DUMP-OBJECT. Setting
90 ;;; this lobotomizes circularity detection as well, since circular
91 ;;; dumping uses the table.
92 (defvar *circularities-detected*)
94 ;;; used to inhibit table access when dumping forms to be read by the
96 (defvar *cold-load-dump* nil)
98 ;;; used to turn off the structure validation during dumping of source
100 (defvar *dump-only-valid-structures* t)
103 ;;; Write the byte B to the specified FASL-OUTPUT stream.
104 (defun dump-byte (b fasl-output)
105 (declare (type (unsigned-byte 8) b) (type fasl-output fasl-output))
106 (write-byte b (fasl-output-stream fasl-output)))
108 ;; Dump a word-sized integer.
109 (defun dump-word (num fasl-output)
110 (declare (type sb!vm:word num))
111 (declare (type fasl-output fasl-output))
112 (let ((stream (fasl-output-stream fasl-output)))
113 (dotimes (i sb!vm:n-word-bytes)
114 (write-byte (ldb (byte 8 (* 8 i)) num) stream))))
116 ;;; Dump NUM to the fasl stream, represented by N bytes. This works
117 ;;; for either signed or unsigned integers. There's no range checking
118 ;;; -- if you don't specify enough bytes for the number to fit, this
119 ;;; function cheerfully outputs the low bytes.
120 (defun dump-integer-as-n-bytes (num bytes fasl-output)
121 (declare (integer num) (type index bytes))
122 (declare (type fasl-output fasl-output))
123 (do ((n num (ash n -8))
126 (declare (type index i))
127 (dump-byte (logand n #xff) fasl-output))
130 ;;; Setting this variable to an (UNSIGNED-BYTE 32) value causes
131 ;;; DUMP-FOP to use it as a counter and emit a FOP-NOP4 with the
132 ;;; counter value before every ordinary fop. This can make it easier
133 ;;; to follow the progress of LOAD-AS-FASL when
134 ;;; debugging/testing/experimenting.
135 #!+sb-show (defvar *fop-nop4-count* nil)
136 #!+sb-show (declaim (type (or (unsigned-byte 32) null) *fop-nop4-count*))
138 ;;; Dump the FOP code for the named FOP to the specified FASL-OUTPUT.
140 ;;; FIXME: This should be a function, with a compiler macro expansion
141 ;;; for the common constant-FS case. (Among other things, that'll stop
142 ;;; it from EVALing ,FILE multiple times.)
144 ;;; FIXME: Compiler macros, frozen classes, inlining, and similar
145 ;;; optimizations should be conditional on #!+SB-FROZEN.
146 (defmacro dump-fop (fs file)
147 (let* ((fs (eval fs))
148 (val (get fs 'fop-code)))
152 (when *fop-nop4-count*
153 (dump-byte ,(get 'fop-nop4 'fop-code) ,file)
154 (dump-integer-as-n-bytes (mod (incf *fop-nop4-count*) (expt 2 32))
156 (dump-byte ',val ,file))
157 (error "compiler bug: ~S is not a legal fasload operator." fs))))
159 ;;; Dump a FOP-CODE along with an integer argument, choosing the FOP
160 ;;; based on whether the argument will fit in a single byte.
162 ;;; FIXME: This, like DUMP-FOP, should be a function with a
163 ;;; compiler-macro expansion.
164 (defmacro dump-fop* (n byte-fop word-fop file)
168 (dump-fop ',byte-fop ,n-file)
169 (dump-byte ,n-n ,n-file))
171 (dump-fop ',word-fop ,n-file)
172 (dump-word ,n-n ,n-file)))))
174 ;;; Push the object at table offset Handle on the fasl stack.
175 (defun dump-push (handle fasl-output)
176 (declare (type index handle) (type fasl-output fasl-output))
177 (dump-fop* handle fop-byte-push fop-push fasl-output)
180 ;;; Pop the object currently on the fasl stack top into the table, and
181 ;;; return the table index, incrementing the free pointer.
182 (defun dump-pop (fasl-output)
184 (fasl-output-table-free fasl-output)
185 (dump-fop 'fop-pop fasl-output)
186 (incf (fasl-output-table-free fasl-output))))
188 ;;; If X is in File's EQUAL-TABLE, then push the object and return T,
189 ;;; otherwise NIL. If *COLD-LOAD-DUMP* is true, then do nothing and
191 (defun equal-check-table (x fasl-output)
192 (declare (type fasl-output fasl-output))
193 (unless *cold-load-dump*
194 (let ((handle (gethash x (fasl-output-equal-table fasl-output))))
196 (handle (dump-push handle fasl-output) t)
198 (defun string-check-table (x fasl-output)
199 (declare (type fasl-output fasl-output)
201 (unless *cold-load-dump*
202 (let ((handle (cdr (assoc
203 (array-element-type x)
204 (gethash x (fasl-output-equal-table fasl-output))))))
206 (handle (dump-push handle fasl-output) t)
209 ;;; These functions are called after dumping an object to save the
210 ;;; object in the table. The object (also passed in as X) must already
211 ;;; be on the top of the FOP stack. If *COLD-LOAD-DUMP* is true, then
212 ;;; we don't do anything.
213 (defun eq-save-object (x fasl-output)
214 (declare (type fasl-output fasl-output))
215 (unless *cold-load-dump*
216 (let ((handle (dump-pop fasl-output)))
217 (setf (gethash x (fasl-output-eq-table fasl-output)) handle)
218 (dump-push handle fasl-output)))
220 (defun equal-save-object (x fasl-output)
221 (declare (type fasl-output fasl-output))
222 (unless *cold-load-dump*
223 (let ((handle (dump-pop fasl-output)))
224 (setf (gethash x (fasl-output-equal-table fasl-output)) handle)
225 (setf (gethash x (fasl-output-eq-table fasl-output)) handle)
226 (dump-push handle fasl-output)))
228 (defun string-save-object (x fasl-output)
229 (declare (type fasl-output fasl-output)
231 (unless *cold-load-dump*
232 (let ((handle (dump-pop fasl-output)))
233 (push (cons (array-element-type x) handle)
234 (gethash x (fasl-output-equal-table fasl-output)))
235 (setf (gethash x (fasl-output-eq-table fasl-output)) handle)
236 (dump-push handle fasl-output)))
238 ;;; Record X in File's CIRCULARITY-TABLE unless *COLD-LOAD-DUMP* is
239 ;;; true. This is called on objects that we are about to dump might
240 ;;; have a circular path through them.
242 ;;; The object must not currently be in this table, since the dumper
243 ;;; should never be recursively called on a circular reference.
244 ;;; Instead, the dumping function must detect the circularity and
245 ;;; arrange for the dumped object to be patched.
246 (defun note-potential-circularity (x fasl-output)
247 (unless *cold-load-dump*
248 (let ((circ (fasl-output-circularity-table fasl-output)))
249 (aver (not (gethash x circ)))
250 (setf (gethash x circ) x)))
253 ;;; Dump FORM to a fasl file so that it evaluated at load time in normal
254 ;;; load and at cold-load time in cold load. This is used to dump package
256 (defun fasl-dump-cold-load-form (form fasl-output)
257 (declare (type fasl-output fasl-output))
258 (dump-fop 'fop-normal-load fasl-output)
259 (let ((*cold-load-dump* t))
260 (dump-object form fasl-output))
261 (dump-fop 'fop-eval-for-effect fasl-output)
262 (dump-fop 'fop-maybe-cold-load fasl-output)
265 ;;;; opening and closing fasl files
267 ;;; A utility function to write strings to (unsigned-byte 8) streams.
268 ;;; We restrict this to ASCII (with the averrance) because of
269 ;;; ambiguity of higher bytes: Unicode, some ISO-8859-x, or what? This
270 ;;; could be revisited in the event of doing funky things with stream
271 ;;; encodings -- CSR, 2002-04-25
272 (defun fasl-write-string (string stream)
273 (loop for char across string
274 do (let ((code (char-code char)))
275 (aver (<= 0 code 127))
276 (write-byte code stream))))
278 ;;; Open a fasl file, write its header, and return a FASL-OUTPUT
279 ;;; object for dumping to it. Some human-readable information about
280 ;;; the source code is given by the string WHERE.
281 (defun open-fasl-output (name where)
282 (declare (type pathname name))
283 (let* ((stream (open name
285 :if-exists :supersede
286 :element-type 'sb!assem:assembly-unit))
287 (res (make-fasl-output :stream stream)))
289 ;; Begin the header with the constant machine-readable (and
290 ;; semi-human-readable) string which is used to identify fasl files.
291 (fasl-write-string *fasl-header-string-start-string* stream)
293 ;; The constant string which begins the header is followed by
294 ;; arbitrary human-readable text, terminated by a special
297 (with-standard-io-syntax
298 (let ((*print-readably* nil)
299 (*print-pretty* nil))
305 using ~A version ~A~%"
307 (format-universal-time nil (get-universal-time))
309 (sb!xc:lisp-implementation-type)
310 (sb!xc:lisp-implementation-version))))
312 (dump-byte +fasl-header-string-stop-char-code+ res)
314 ;; Finish the header by outputting fasl file implementation,
315 ;; version, and key *FEATURES*.
316 (flet ((dump-counted-string (string)
317 (dump-word (length string) res)
318 (dotimes (i (length string))
319 (dump-byte (char-code (aref string i)) res))))
320 (dump-counted-string (symbol-name +backend-fasl-file-implementation+))
321 (dump-word +fasl-file-version+ res)
322 (dump-counted-string *features-affecting-fasl-format*))
326 ;;; Close the specified FASL-OUTPUT, aborting the write if ABORT-P.
327 (defun close-fasl-output (fasl-output abort-p)
328 (declare (type fasl-output fasl-output))
331 (aver (zerop (hash-table-count (fasl-output-patch-table fasl-output))))
334 (dump-fop 'fop-verify-empty-stack fasl-output)
335 (dump-fop 'fop-verify-table-size fasl-output)
336 (dump-word (fasl-output-table-free fasl-output)
338 (dump-fop 'fop-end-group fasl-output)
340 ;; That's all, folks.
341 (close (fasl-output-stream fasl-output) :abort abort-p)
344 ;;;; main entries to object dumping
346 ;;; This function deals with dumping objects that are complex enough
347 ;;; so that we want to cache them in the table, rather than repeatedly
348 ;;; dumping them. If the object is in the EQ-TABLE, then we push it,
349 ;;; otherwise, we do a type dispatch to a type specific dumping
350 ;;; function. The type specific branches do any appropriate
351 ;;; EQUAL-TABLE check and table entry.
353 ;;; When we go to dump the object, we enter it in the CIRCULARITY-TABLE.
354 (defun dump-non-immediate-object (x file)
355 (let ((index (gethash x (fasl-output-eq-table file))))
356 (cond ((and index (not *cold-load-dump*))
357 (dump-push index file))
360 (symbol (dump-symbol x file))
362 ;; KLUDGE: The code in this case has been hacked
363 ;; to match Douglas Crosher's quick fix to CMU CL
364 ;; (on cmucl-imp 1999-12-27), applied in sbcl-0.6.8.11
365 ;; with help from Martin Atzmueller. This is not an
366 ;; ideal solution; to quote DTC,
367 ;; The compiler locks up trying to coalesce the
368 ;; constant lists. The hack below will disable the
369 ;; coalescing of lists while dumping and allows
370 ;; the code to compile. The real fix would be to
371 ;; take a little more care while dumping these.
372 ;; So if better list coalescing is needed, start here.
374 (if (cyclic-list-p x)
377 (eq-save-object x file))
378 (unless (equal-check-table x file)
380 (equal-save-object x file))))
383 (eq-save-object x file))
385 (dump-structure x file)
386 (eq-save-object x file))
388 ;; DUMP-ARRAY (and its callees) are responsible for
389 ;; updating the EQ and EQUAL hash tables.
392 (unless (equal-check-table x file)
394 (ratio (dump-ratio x file))
395 (complex (dump-complex x file))
396 (float (dump-float x file))
397 (integer (dump-integer x file)))
398 (equal-save-object x file)))
400 ;; This probably never happens, since bad things tend to
401 ;; be detected during IR1 conversion.
402 (error "This object cannot be dumped into a fasl file:~% ~S"
406 ;;; Dump an object of any type by dispatching to the correct
407 ;;; type-specific dumping function. We pick off immediate objects,
408 ;;; symbols and magic lists here. Other objects are handled by
409 ;;; DUMP-NON-IMMEDIATE-OBJECT.
411 ;;; This is the function used for recursive calls to the fasl dumper.
412 ;;; We don't worry about creating circularities here, since it is
413 ;;; assumed that there is a top level call to DUMP-OBJECT.
414 (defun sub-dump-object (x file)
417 (dump-non-immediate-object x file)
418 (dump-fop 'fop-empty-list file)))
421 (dump-fop 'fop-truth file)
422 (dump-non-immediate-object x file)))
423 ((fixnump x) (dump-integer x file))
424 ((characterp x) (dump-character x file))
426 (dump-non-immediate-object x file))))
428 ;;; Dump stuff to backpatch already dumped objects. INFOS is the list
429 ;;; of CIRCULARITY structures describing what to do. The patching FOPs
430 ;;; take the value to store on the stack. We compute this value by
431 ;;; fetching the enclosing object from the table, and then CDR'ing it
433 (defun dump-circularities (infos file)
434 (let ((table (fasl-output-eq-table file)))
437 (let* ((value (circularity-value info))
438 (enclosing (circularity-enclosing-object info)))
439 (dump-push (gethash enclosing table) file)
440 (unless (eq enclosing value)
441 (do ((current enclosing (cdr current))
444 (dump-fop 'fop-nthcdr file)
446 (declare (type index i)))))
448 (ecase (circularity-type info)
449 (:rplaca (dump-fop 'fop-rplaca file))
450 (:rplacd (dump-fop 'fop-rplacd file))
451 (:svset (dump-fop 'fop-svset file))
452 (:struct-set (dump-fop 'fop-structset file)))
453 (dump-word (gethash (circularity-object info) table) file)
454 (dump-word (circularity-index info) file))))
456 ;;; Set up stuff for circularity detection, then dump an object. All
457 ;;; shared and circular structure will be exactly preserved within a
458 ;;; single call to DUMP-OBJECT. Sharing between objects dumped by
459 ;;; separate calls is only preserved when convenient.
461 ;;; We peek at the object type so that we only pay the circular
462 ;;; detection overhead on types of objects that might be circular.
463 (defun dump-object (x file)
464 (if (compound-object-p x)
465 (let ((*circularities-detected* ())
466 (circ (fasl-output-circularity-table file)))
468 (sub-dump-object x file)
469 (when *circularities-detected*
470 (dump-circularities *circularities-detected* file)
472 (sub-dump-object x file)))
474 ;;;; LOAD-TIME-VALUE and MAKE-LOAD-FORM support
476 ;;; Emit a funcall of the function and return the handle for the
478 (defun fasl-dump-load-time-value-lambda (fun file)
479 (declare (type sb!c::clambda fun) (type fasl-output file))
480 (let ((handle (gethash (sb!c::leaf-info fun)
481 (fasl-output-entry-table file))))
483 (dump-push handle file)
484 (dump-fop 'fop-funcall file)
488 ;;; Return T iff CONSTANT has not already been dumped. It's been
489 ;;; dumped if it's in the EQ table.
490 (defun fasl-constant-already-dumped-p (constant file)
491 (if (or (gethash constant (fasl-output-eq-table file))
492 (gethash constant (fasl-output-valid-structures file)))
496 ;;; Use HANDLE whenever we try to dump CONSTANT. HANDLE should have been
497 ;;; returned earlier by FASL-DUMP-LOAD-TIME-VALUE-LAMBDA.
498 (defun fasl-note-handle-for-constant (constant handle file)
499 (let ((table (fasl-output-eq-table file)))
500 (when (gethash constant table)
501 (error "~S already dumped?" constant))
502 (setf (gethash constant table) handle))
505 ;;; Note that the specified structure can just be dumped by
506 ;;; enumerating the slots.
507 (defun fasl-validate-structure (structure file)
508 (setf (gethash structure (fasl-output-valid-structures file)) t)
513 (defun dump-ratio (x file)
514 (sub-dump-object (numerator x) file)
515 (sub-dump-object (denominator x) file)
516 (dump-fop 'fop-ratio file))
518 (defun dump-integer (n file)
521 (dump-fop 'fop-byte-integer file)
522 (dump-byte (logand #xFF n) file))
523 ((unsigned-byte #.(1- sb!vm:n-word-bits))
524 (dump-fop 'fop-word-integer file)
526 ((signed-byte #.sb!vm:n-word-bits)
527 (dump-fop 'fop-word-integer file)
528 (dump-integer-as-n-bytes n #.sb!vm:n-word-bytes file))
530 (let ((bytes (ceiling (1+ (integer-length n)) 8)))
531 (dump-fop* bytes fop-small-integer fop-integer file)
532 (dump-integer-as-n-bytes n bytes file)))))
534 (defun dump-float (x file)
537 (dump-fop 'fop-single-float file)
538 (dump-integer-as-n-bytes (single-float-bits x) 4 file))
540 (dump-fop 'fop-double-float file)
542 (declare (double-float x))
543 (dump-integer-as-n-bytes (double-float-low-bits x) 4 file)
544 (dump-integer-as-n-bytes (double-float-high-bits x) 4 file)))
547 (dump-fop 'fop-long-float file)
548 (dump-long-float x file))))
550 (defun dump-complex (x file)
553 ((complex single-float)
554 (dump-fop 'fop-complex-single-float file)
555 (dump-integer-as-n-bytes (single-float-bits (realpart x)) 4 file)
556 (dump-integer-as-n-bytes (single-float-bits (imagpart x)) 4 file))
558 ((complex double-float)
559 (dump-fop 'fop-complex-double-float file)
560 (let ((re (realpart x)))
561 (declare (double-float re))
562 (dump-integer-as-n-bytes (double-float-low-bits re) 4 file)
563 (dump-integer-as-n-bytes (double-float-high-bits re) 4 file))
564 (let ((im (imagpart x)))
565 (declare (double-float im))
566 (dump-integer-as-n-bytes (double-float-low-bits im) 4 file)
567 (dump-integer-as-n-bytes (double-float-high-bits im) 4 file)))
569 ((complex long-float)
570 ;; (There's no easy way to mix #!+LONG-FLOAT and #-SB-XC-HOST
571 ;; conditionalization at read time, so we do this SB-XC-HOST
572 ;; conditional at runtime instead.)
573 #+sb-xc-host (error "can't dump COMPLEX-LONG-FLOAT in cross-compiler")
574 (dump-fop 'fop-complex-long-float file)
575 (dump-long-float (realpart x) file)
576 (dump-long-float (imagpart x) file))
578 (sub-dump-object (realpart x) file)
579 (sub-dump-object (imagpart x) file)
580 (dump-fop 'fop-complex file))))
584 ;;; Return the table index of PKG, adding the package to the table if
585 ;;; necessary. During cold load, we read the string as a normal string
586 ;;; so that we can do the package lookup at cold load time.
588 ;;; FIXME: Despite the parallelism in names, the functionality of
589 ;;; this function is not parallel to other functions DUMP-FOO, e.g.
590 ;;; DUMP-SYMBOL and DUMP-LIST. The mapping between names and behavior
591 ;;; should be made more consistent.
592 (declaim (ftype (function (package fasl-output) index) dump-package))
593 (defun dump-package (pkg file)
594 (declare (inline assoc))
595 (cond ((cdr (assoc pkg (fasl-output-packages file) :test #'eq)))
597 (unless *cold-load-dump*
598 (dump-fop 'fop-normal-load file))
600 (dump-simple-base-string
601 (coerce (package-name pkg) 'simple-base-string)
604 (#!+sb-unicode dump-simple-character-string
605 #!-sb-unicode dump-simple-base-string
606 (coerce (package-name pkg) '(simple-array character (*)))
608 (dump-fop 'fop-package file)
609 (unless *cold-load-dump*
610 (dump-fop 'fop-maybe-cold-load file))
611 (let ((entry (dump-pop file)))
612 (push (cons pkg entry) (fasl-output-packages file))
617 ;;; Dump a list, setting up patching information when there are
618 ;;; circularities. We scan down the list, checking for CDR and CAR
621 ;;; If there is a CDR circularity, we terminate the list with NIL and
622 ;;; make a CIRCULARITY notation for the CDR of the previous cons.
624 ;;; If there is no CDR circularity, then we mark the current cons and
625 ;;; check for a CAR circularity. When there is a CAR circularity, we
626 ;;; make the CAR NIL initially, arranging for the current cons to be
629 ;;; Otherwise, we recursively call the dumper to dump the current
632 ;;; Marking of the conses is inhibited when *COLD-LOAD-DUMP* is true.
633 ;;; This inhibits all circularity detection.
634 (defun dump-list (list file)
636 (not (gethash list (fasl-output-circularity-table file)))))
637 (do* ((l list (cdr l))
639 (circ (fasl-output-circularity-table file)))
642 (terminate-undotted-list n file))
644 (sub-dump-object l file)
645 (terminate-dotted-list n file))))
646 (declare (type index n))
647 (let ((ref (gethash l circ)))
649 (push (make-circularity :type :rplacd
653 :enclosing-object ref)
654 *circularities-detected*)
655 (terminate-undotted-list n file)
658 (unless *cold-load-dump*
659 (setf (gethash l circ) list))
662 (ref (gethash obj circ)))
664 (push (make-circularity :type :rplaca
668 :enclosing-object ref)
669 *circularities-detected*)
670 (sub-dump-object nil file))
672 (sub-dump-object obj file))))))
674 (defun terminate-dotted-list (n file)
675 (declare (type index n) (type fasl-output file))
677 (1 (dump-fop 'fop-list*-1 file))
678 (2 (dump-fop 'fop-list*-2 file))
679 (3 (dump-fop 'fop-list*-3 file))
680 (4 (dump-fop 'fop-list*-4 file))
681 (5 (dump-fop 'fop-list*-5 file))
682 (6 (dump-fop 'fop-list*-6 file))
683 (7 (dump-fop 'fop-list*-7 file))
684 (8 (dump-fop 'fop-list*-8 file))
685 (t (do ((nn n (- nn 255)))
687 (dump-fop 'fop-list* file)
689 (declare (type index nn))
690 (dump-fop 'fop-list* file)
691 (dump-byte 255 file)))))
693 ;;; If N > 255, must build list with one LIST operator, then LIST*
696 (defun terminate-undotted-list (n file)
697 (declare (type index n) (type fasl-output file))
699 (1 (dump-fop 'fop-list-1 file))
700 (2 (dump-fop 'fop-list-2 file))
701 (3 (dump-fop 'fop-list-3 file))
702 (4 (dump-fop 'fop-list-4 file))
703 (5 (dump-fop 'fop-list-5 file))
704 (6 (dump-fop 'fop-list-6 file))
705 (7 (dump-fop 'fop-list-7 file))
706 (8 (dump-fop 'fop-list-8 file))
708 (dump-fop 'fop-list file)
710 (t (dump-fop 'fop-list file)
712 (do ((nn (- n 255) (- nn 255)))
714 (dump-fop 'fop-list* file)
716 (declare (type index nn))
717 (dump-fop 'fop-list* file)
718 (dump-byte 255 file)))))))
722 ;;; Dump the array thing.
723 (defun dump-array (x file)
726 (dump-multi-dim-array x file)))
728 ;;; Dump the vector object. If it's not simple, then actually dump a
729 ;;; simple version of it. But we enter the original in the EQ or EQUAL
731 (defun dump-vector (x file)
732 (let ((simple-version (if (array-header-p x)
733 (coerce x `(simple-array
734 ,(array-element-type x)
737 (typecase simple-version
740 (unless (string-check-table x file)
741 (dump-simple-base-string simple-version file)
742 (string-save-object x file)))
745 (unless (string-check-table x file)
746 (dump-simple-base-string simple-version file)
747 (string-save-object x file)))
749 ((simple-array character (*))
751 (unless (string-check-table x file)
752 (dump-simple-character-string simple-version file)
753 (string-save-object x file))
755 (bug "how did we get here?"))
757 (dump-simple-vector simple-version file)
758 (eq-save-object x file))
759 ((simple-array single-float (*))
760 (dump-single-float-vector simple-version file)
761 (eq-save-object x file))
762 ((simple-array double-float (*))
763 (dump-double-float-vector simple-version file)
764 (eq-save-object x file))
766 ((simple-array long-float (*))
767 (dump-long-float-vector simple-version file)
768 (eq-save-object x file))
769 ((simple-array (complex single-float) (*))
770 (dump-complex-single-float-vector simple-version file)
771 (eq-save-object x file))
772 ((simple-array (complex double-float) (*))
773 (dump-complex-double-float-vector simple-version file)
774 (eq-save-object x file))
776 ((simple-array (complex long-float) (*))
777 (dump-complex-long-float-vector simple-version file)
778 (eq-save-object x file))
780 (dump-i-vector simple-version file)
781 (eq-save-object x file)))))
783 ;;; Dump a SIMPLE-VECTOR, handling any circularities.
784 (defun dump-simple-vector (v file)
785 (declare (type simple-vector v) (type fasl-output file))
786 (note-potential-circularity v file)
787 (do ((index 0 (1+ index))
789 (circ (fasl-output-circularity-table file)))
791 (dump-fop* length fop-small-vector fop-vector file))
792 (let* ((obj (aref v index))
793 (ref (gethash obj circ)))
795 (push (make-circularity :type :svset
799 :enclosing-object ref)
800 *circularities-detected*)
801 (sub-dump-object nil file))
803 (sub-dump-object obj file))))))
805 ;;; In the grand scheme of things I don't pretend to understand any
806 ;;; more how this works, or indeed whether. But to write out specialized
807 ;;; vectors in the same format as fop-int-vector expects to read them
808 ;;; we need to be target-endian. dump-integer-as-n-bytes always writes
809 ;;; little-endian (which is correct for all other integers) so for a bigendian
810 ;;; target we need to swap octets -- CSR, after DB
812 (defun octet-swap (word bits)
813 "BITS must be a multiple of 8"
814 (do ((input word (ash input -8))
815 (output 0 (logior (ash output 8) (logand input #xff)))
816 (bits bits (- bits 8)))
817 ((<= bits 0) output)))
819 (defun dump-i-vector (vec file &key data-only)
820 (declare (type (simple-array * (*)) vec))
821 (let ((len (length vec)))
822 (labels ((dump-unsigned-vector (size bytes)
824 (dump-fop 'fop-int-vector file)
826 (dump-byte size file))
827 ;; The case which is easy to handle in a portable way is when
828 ;; the element size is a multiple of the output byte size, and
829 ;; happily that's the only case we need to be portable. (The
830 ;; cross-compiler has to output debug information (including
831 ;; (SIMPLE-ARRAY (UNSIGNED-BYTE 8) *).) The other cases are only
832 ;; needed in the target SBCL, so we let them be handled with
833 ;; unportable bit bashing.
834 (cond ((>= size 7) ; easy cases
835 (multiple-value-bind (floor rem) (floor size 8)
836 (aver (or (zerop rem) (= rem 7)))
838 (setq size (1+ size))
839 (setq floor (1+ floor)))
841 (dump-integer-as-n-bytes
842 (ecase sb!c:*backend-byte-order*
844 (:big-endian (octet-swap i size)))
846 (t ; harder cases, not supported in cross-compiler
847 (dump-raw-bytes vec bytes file))))
848 (dump-signed-vector (size bytes)
849 ;; Note: Dumping specialized signed vectors isn't
850 ;; supported in the cross-compiler. (All cases here end
851 ;; up trying to call DUMP-RAW-BYTES, which isn't
852 ;; provided in the cross-compilation host, only on the
855 (dump-fop 'fop-signed-int-vector file)
857 (dump-byte size file))
858 (dump-raw-bytes vec bytes file)))
861 ((simple-array nil (*))
862 (dump-unsigned-vector 0 0))
864 (dump-unsigned-vector 1 (ceiling len 8))) ; bits to bytes
865 ;; KLUDGE: This isn't the best way of expressing that the host
866 ;; may not have specializations for (unsigned-byte 2) and
867 ;; (unsigned-byte 4), which means that these types are
868 ;; type-equivalent to (simple-array (unsigned-byte 8) (*));
869 ;; the workaround is to remove them from the etypecase, since
870 ;; they can't be dumped from the cross-compiler anyway. --
873 ((simple-array (unsigned-byte 2) (*))
874 (dump-unsigned-vector 2 (ceiling (ash len 1) 8))) ; bits to bytes
876 ((simple-array (unsigned-byte 4) (*))
877 (dump-unsigned-vector 4 (ceiling (ash len 2) 8))) ; bits to bytes
879 ((simple-array (unsigned-byte 7) (*))
880 (dump-unsigned-vector 7 len))
881 ((simple-array (unsigned-byte 8) (*))
882 (dump-unsigned-vector 8 len))
884 ((simple-array (unsigned-byte 15) (*))
885 (dump-unsigned-vector 15 (* 2 len)))
886 ((simple-array (unsigned-byte 16) (*))
887 (dump-unsigned-vector 16 (* 2 len)))
889 ((simple-array (unsigned-byte 31) (*))
890 (dump-unsigned-vector 31 (* 4 len)))
891 ((simple-array (unsigned-byte 32) (*))
892 (dump-unsigned-vector 32 (* 4 len)))
894 #!+#.(cl:if (cl:= 64 sb!vm:n-word-bits) '(and) '(or))
895 ((simple-array (unsigned-byte 63) (*))
896 (dump-unsigned-vector 63 (* 8 len)))
897 #!+#.(cl:if (cl:= 64 sb!vm:n-word-bits) '(and) '(or))
898 ((simple-array (unsigned-byte 64) (*))
899 (dump-unsigned-vector 64 (* 8 len)))
900 ((simple-array (signed-byte 8) (*))
901 (dump-signed-vector 8 len))
902 ((simple-array (signed-byte 16) (*))
903 (dump-signed-vector 16 (* 2 len)))
904 #!+#.(cl:if (cl:= 32 sb!vm:n-word-bits) '(and) '(or))
905 ((simple-array (unsigned-byte 29) (*))
906 (dump-signed-vector 29 (* 4 len)))
907 #!+#.(cl:if (cl:= 32 sb!vm:n-word-bits) '(and) '(or))
908 ((simple-array (signed-byte 30) (*))
909 (dump-signed-vector 30 (* 4 len)))
910 ((simple-array (signed-byte 32) (*))
911 (dump-signed-vector 32 (* 4 len)))
912 #!+#.(cl:if (cl:= 64 sb!vm:n-word-bits) '(and) '(or))
913 ((simple-array (unsigned-byte 60) (*))
914 (dump-signed-vector 60 (* 8 len)))
915 #!+#.(cl:if (cl:= 64 sb!vm:n-word-bits) '(and) '(or))
916 ((simple-array (signed-byte 61) (*))
917 (dump-signed-vector 61 (* 8 len)))
918 #!+#.(cl:if (cl:= 64 sb!vm:n-word-bits) '(and) '(or))
919 ((simple-array (signed-byte 64) (*))
920 (dump-signed-vector 64 (* 8 len)))))))
922 ;;; Dump characters and string-ish things.
924 (defun dump-character (char file)
925 (let ((code (sb!xc:char-code char)))
928 (dump-fop 'fop-short-character file)
929 (dump-byte code file))
931 (dump-fop 'fop-character file)
932 (dump-word code file)))))
934 (defun dump-base-chars-of-string (s fasl-output)
935 (declare #+sb-xc-host (type simple-string s)
936 #-sb-xc-host (type simple-base-string s)
937 (type fasl-output fasl-output))
939 (dump-byte (sb!xc:char-code c) fasl-output))
943 ;;; Dump a SIMPLE-BASE-STRING.
944 (defun dump-simple-base-string (s file)
945 #+sb-xc-host (declare (type simple-string s))
946 #-sb-xc-host (declare (type simple-base-string s))
947 (dump-fop* (length s) fop-small-base-string fop-base-string file)
948 (dump-base-chars-of-string s file)
951 ;;; If we get here, it is assumed that the symbol isn't in the table,
952 ;;; but we are responsible for putting it there when appropriate. To
953 ;;; avoid too much special-casing, we always push the symbol in the
954 ;;; table, but don't record that we have done so if *COLD-LOAD-DUMP*
956 (defun dump-symbol (s file)
957 (declare (type fasl-output file))
958 (let* ((pname (symbol-name s))
959 (pname-length (length pname))
960 (pkg (symbol-package s)))
963 (dump-fop* pname-length
964 fop-uninterned-small-symbol-save
965 fop-uninterned-symbol-save
967 ;; CMU CL had FOP-SYMBOL-SAVE/FOP-SMALL-SYMBOL-SAVE fops which
968 ;; used the current value of *PACKAGE*. Unfortunately that's
969 ;; broken w.r.t. ANSI Common Lisp semantics, so those are gone
971 ;;((eq pkg *package*)
972 ;; (dump-fop* pname-length
973 ;; fop-small-symbol-save
974 ;; fop-symbol-save file))
975 ((eq pkg sb!int:*cl-package*)
976 (dump-fop* pname-length
977 fop-lisp-small-symbol-save
980 ((eq pkg sb!int:*keyword-package*)
981 (dump-fop* pname-length
982 fop-keyword-small-symbol-save
983 fop-keyword-symbol-save
985 ((< pname-length 256)
986 (dump-fop* (dump-package pkg file)
987 fop-small-symbol-in-byte-package-save
988 fop-small-symbol-in-package-save
990 (dump-byte pname-length file))
992 (dump-fop* (dump-package pkg file)
993 fop-symbol-in-byte-package-save
994 fop-symbol-in-package-save
996 (dump-word pname-length file)))
998 #+sb-xc-host (dump-base-chars-of-string pname file)
999 #-sb-xc-host (#!+sb-unicode dump-characters-of-string
1000 #!-sb-unicode dump-base-chars-of-string
1003 (unless *cold-load-dump*
1004 (setf (gethash s (fasl-output-eq-table file))
1005 (fasl-output-table-free file)))
1007 (incf (fasl-output-table-free file)))
1011 ;;;; component (function) dumping
1013 (defun dump-segment (segment code-length fasl-output)
1014 (declare (type sb!assem:segment segment)
1015 (type fasl-output fasl-output))
1016 (let* ((stream (fasl-output-stream fasl-output))
1017 (n-written (write-segment-contents segment stream)))
1018 ;; In CMU CL there was no enforced connection between the CODE-LENGTH
1019 ;; argument and the number of bytes actually written. I added this
1020 ;; assertion while trying to debug portable genesis. -- WHN 19990902
1021 (unless (= code-length n-written)
1022 (bug "code-length=~W, n-written=~W" code-length n-written)))
1025 ;;; Dump all the fixups. Currently there are three flavors of fixup:
1026 ;;; - assembly routines: named by a symbol
1027 ;;; - foreign (C) symbols: named by a string
1028 ;;; - code object references: don't need a name.
1029 (defun dump-fixups (fixups fasl-output)
1030 (declare (list fixups) (type fasl-output fasl-output))
1031 (dolist (note fixups)
1032 (let* ((kind (fixup-note-kind note))
1033 (fixup (fixup-note-fixup note))
1034 (position (fixup-note-position note))
1035 (name (fixup-name fixup))
1036 (flavor (fixup-flavor fixup)))
1037 (dump-fop 'fop-normal-load fasl-output)
1038 (let ((*cold-load-dump* t))
1039 (dump-object kind fasl-output))
1040 (dump-fop 'fop-maybe-cold-load fasl-output)
1041 ;; Depending on the flavor, we may have various kinds of
1042 ;; noise before the position.
1045 (aver (symbolp name))
1046 (dump-fop 'fop-normal-load fasl-output)
1047 (let ((*cold-load-dump* t))
1048 (dump-object name fasl-output))
1049 (dump-fop 'fop-maybe-cold-load fasl-output)
1050 (dump-fop 'fop-assembler-fixup fasl-output))
1051 ((:foreign :foreign-dataref)
1052 (aver (stringp name))
1055 (dump-fop 'fop-foreign-fixup fasl-output))
1058 (dump-fop 'fop-foreign-dataref-fixup fasl-output)))
1059 (let ((len (length name)))
1060 (aver (< len 256)) ; (limit imposed by fop definition)
1061 (dump-byte len fasl-output)
1063 (dump-byte (char-code (schar name i)) fasl-output))))
1066 (dump-fop 'fop-code-object-fixup fasl-output)))
1067 ;; No matter what the flavor, we'll always dump the position
1068 (dump-word position fasl-output)))
1071 ;;; Dump out the constant pool and code-vector for component, push the
1072 ;;; result in the table, and return the offset.
1074 ;;; The only tricky thing is handling constant-pool references to
1075 ;;; functions. If we have already dumped the function, then we just
1076 ;;; push the code pointer. Otherwise, we must create back-patching
1077 ;;; information so that the constant will be set when the function is
1078 ;;; eventually dumped. This is a bit awkward, since we don't have the
1079 ;;; handle for the code object being dumped while we are dumping its
1082 ;;; We dump trap objects in any unused slots or forward referenced slots.
1083 (defun dump-code-object (component
1090 (declare (type component component)
1091 (list trace-table-as-list)
1092 (type index code-length)
1093 (type fasl-output fasl-output))
1095 (let* ((2comp (component-info component))
1096 (constants (sb!c::ir2-component-constants 2comp))
1097 (header-length (length constants))
1098 (packed-trace-table (pack-trace-table trace-table-as-list))
1099 (total-length (+ code-length
1100 (* (length packed-trace-table)
1101 sb!c::tt-bytes-per-entry))))
1103 (collect ((patches))
1105 ;; Dump the offset of the trace table.
1106 (dump-object code-length fasl-output)
1107 ;; FIXME: As long as we don't have GENGC, the trace table is
1108 ;; hardwired to be empty. And SBCL doesn't have GENGC (and as
1109 ;; far as I know no modern CMU CL does either -- WHN
1110 ;; 2001-10-05). So might we be able to get rid of trace tables?
1112 ;; Note that gencgc also does something with the trace table.
1114 ;; Dump the constants, noting any :ENTRY constants that have to
1116 (loop for i from sb!vm:code-constants-offset below header-length do
1117 (let ((entry (aref constants i)))
1120 (dump-object (sb!c::constant-value entry) fasl-output))
1124 (let* ((info (sb!c::leaf-info (cdr entry)))
1125 (handle (gethash info
1126 (fasl-output-entry-table
1128 (declare (type sb!c::entry-info info))
1131 (dump-push handle fasl-output))
1133 (patches (cons info i))
1134 (dump-fop 'fop-misc-trap fasl-output)))))
1136 (dump-push (cdr entry) fasl-output))
1138 (dump-object (cdr entry) fasl-output)
1139 (dump-fop 'fop-fdefinition fasl-output))))
1141 (dump-fop 'fop-misc-trap fasl-output)))))
1143 ;; Dump the debug info.
1144 (let ((info (sb!c::debug-info-for-component component))
1145 (*dump-only-valid-structures* nil))
1146 (dump-object info fasl-output)
1147 (let ((info-handle (dump-pop fasl-output)))
1148 (dump-push info-handle fasl-output)
1149 (push info-handle (fasl-output-debug-info fasl-output))))
1151 (let ((num-consts (- header-length sb!vm:code-trace-table-offset-slot)))
1152 (cond ((and (< num-consts #x100) (< total-length #x10000))
1153 (dump-fop 'fop-small-code fasl-output)
1154 (dump-byte num-consts fasl-output)
1155 (dump-integer-as-n-bytes total-length (/ sb!vm:n-word-bytes 2) fasl-output))
1157 (dump-fop 'fop-code fasl-output)
1158 (dump-word num-consts fasl-output)
1159 (dump-word total-length fasl-output))))
1161 ;; These two dumps are only ones which contribute to our
1162 ;; TOTAL-LENGTH value.
1163 (dump-segment code-segment code-length fasl-output)
1164 (dump-i-vector packed-trace-table fasl-output :data-only t)
1166 ;; DUMP-FIXUPS does its own internal DUMP-FOPs: the bytes it
1167 ;; dumps aren't included in the TOTAL-LENGTH passed to our
1168 ;; FOP-CODE/FOP-SMALL-CODE fop.
1169 (dump-fixups fixups fasl-output)
1171 (dump-fop 'fop-sanctify-for-execution fasl-output)
1173 (let ((handle (dump-pop fasl-output)))
1174 (dolist (patch (patches))
1175 (push (cons handle (cdr patch))
1176 (gethash (car patch)
1177 (fasl-output-patch-table fasl-output))))
1180 (defun dump-assembler-routines (code-segment length fixups routines file)
1181 (dump-fop 'fop-assembler-code file)
1182 (dump-word length file)
1183 (write-segment-contents code-segment (fasl-output-stream file))
1184 (dolist (routine routines)
1185 (dump-fop 'fop-normal-load file)
1186 (let ((*cold-load-dump* t))
1187 (dump-object (car routine) file))
1188 (dump-fop 'fop-maybe-cold-load file)
1189 (dump-fop 'fop-assembler-routine file)
1190 (dump-word (label-position (cdr routine)) file))
1191 (dump-fixups fixups file)
1192 (dump-fop 'fop-sanctify-for-execution file)
1195 ;;; Dump a function entry data structure corresponding to ENTRY to
1196 ;;; FILE. CODE-HANDLE is the table offset of the code object for the
1198 (defun dump-one-entry (entry code-handle file)
1199 (declare (type sb!c::entry-info entry) (type index code-handle)
1200 (type fasl-output file))
1201 (let ((name (sb!c::entry-info-name entry)))
1202 (dump-push code-handle file)
1203 (dump-object name file)
1204 (dump-object (sb!c::entry-info-arguments entry) file)
1205 (dump-object (sb!c::entry-info-type entry) file)
1206 (dump-fop 'fop-fun-entry file)
1207 (dump-word (label-position (sb!c::entry-info-offset entry)) file)
1210 ;;; Alter the code object referenced by CODE-HANDLE at the specified
1211 ;;; OFFSET, storing the object referenced by ENTRY-HANDLE.
1212 (defun dump-alter-code-object (code-handle offset entry-handle file)
1213 (declare (type index code-handle entry-handle offset))
1214 (declare (type fasl-output file))
1215 (dump-push code-handle file)
1216 (dump-push entry-handle file)
1217 (dump-fop* offset fop-byte-alter-code fop-alter-code file)
1220 ;;; Dump the code, constants, etc. for component. We pass in the
1221 ;;; assembler fixups, code vector and node info.
1222 (defun fasl-dump-component (component
1228 (declare (type component component) (list trace-table))
1229 (declare (type fasl-output file))
1231 (dump-fop 'fop-verify-empty-stack file)
1232 (dump-fop 'fop-verify-table-size file)
1233 (dump-word (fasl-output-table-free file) file)
1236 (let ((info (sb!c::ir2-component-dyncount-info (component-info component))))
1238 (fasl-validate-structure info file)))
1240 (let ((code-handle (dump-code-object component
1246 (2comp (component-info component)))
1247 (dump-fop 'fop-verify-empty-stack file)
1249 (dolist (entry (sb!c::ir2-component-entries 2comp))
1250 (let ((entry-handle (dump-one-entry entry code-handle file)))
1251 (setf (gethash entry (fasl-output-entry-table file)) entry-handle)
1252 (let ((old (gethash entry (fasl-output-patch-table file))))
1255 (dump-alter-code-object (car patch)
1259 (remhash entry (fasl-output-patch-table file)))))))
1262 (defun dump-push-previously-dumped-fun (fun fasl-output)
1263 (declare (type sb!c::clambda fun))
1264 (let ((handle (gethash (sb!c::leaf-info fun)
1265 (fasl-output-entry-table fasl-output))))
1267 (dump-push handle fasl-output))
1270 ;;; Dump a FOP-FUNCALL to call an already-dumped top level lambda at
1272 (defun fasl-dump-toplevel-lambda-call (fun fasl-output)
1273 (declare (type sb!c::clambda fun))
1274 (dump-push-previously-dumped-fun fun fasl-output)
1275 (dump-fop 'fop-funcall-for-effect fasl-output)
1276 (dump-byte 0 fasl-output)
1279 ;;; Dump a FOP-FSET to arrange static linkage (at cold init) between
1280 ;;; FUN-NAME and the already-dumped function whose dump handle is
1281 ;;; FUN-DUMP-HANDLE.
1283 (defun fasl-dump-cold-fset (fun-name fun-dump-handle fasl-output)
1284 (declare (type fixnum fun-dump-handle))
1285 (aver (legal-fun-name-p fun-name))
1286 (dump-non-immediate-object fun-name fasl-output)
1287 (dump-push fun-dump-handle fasl-output)
1288 (dump-fop 'fop-fset fasl-output)
1291 ;;; Compute the correct list of DEBUG-SOURCE structures and backpatch
1292 ;;; all of the dumped DEBUG-INFO structures. We clear the
1293 ;;; FASL-OUTPUT-DEBUG-INFO, so that subsequent components with
1294 ;;; different source info may be dumped.
1295 (defun fasl-dump-source-info (info fasl-output)
1296 (declare (type sb!c::source-info info))
1297 (let ((res (sb!c::debug-source-for-info info))
1298 (*dump-only-valid-structures* nil))
1299 (dump-object res fasl-output)
1300 (let ((res-handle (dump-pop fasl-output)))
1301 (dolist (info-handle (fasl-output-debug-info fasl-output))
1302 (dump-push res-handle fasl-output)
1303 (dump-fop 'fop-structset fasl-output)
1304 (dump-word info-handle fasl-output)
1305 ;; FIXME: what is this bare `2'? --njf, 2004-08-16
1306 (dump-word 2 fasl-output))))
1307 (setf (fasl-output-debug-info fasl-output) nil)
1310 ;;;; dumping structures
1312 (defun dump-structure (struct file)
1313 (when *dump-only-valid-structures*
1314 (unless (gethash struct (fasl-output-valid-structures file))
1315 (error "attempt to dump invalid structure:~% ~S~%How did this happen?"
1317 (note-potential-circularity struct file)
1318 (do ((index 0 (1+ index))
1319 (length (%instance-length struct))
1320 (circ (fasl-output-circularity-table file)))
1322 (dump-fop* length fop-small-struct fop-struct file))
1323 (let* ((obj (%instance-ref struct index))
1324 (ref (gethash obj circ)))
1326 (push (make-circularity :type :struct-set
1330 :enclosing-object ref)
1331 *circularities-detected*)
1332 (sub-dump-object nil file))
1334 (sub-dump-object obj file))))))
1336 (defun dump-layout (obj file)
1337 (when (layout-invalid obj)
1338 (compiler-error "attempt to dump reference to obsolete class: ~S"
1339 (layout-classoid obj)))
1340 (let ((name (classoid-name (layout-classoid obj))))
1342 (compiler-error "dumping anonymous layout: ~S" obj))
1343 (dump-fop 'fop-normal-load file)
1344 (let ((*cold-load-dump* t))
1345 (dump-object name file))
1346 (dump-fop 'fop-maybe-cold-load file))
1347 (sub-dump-object (layout-inherits obj) file)
1348 (sub-dump-object (layout-depthoid obj) file)
1349 (sub-dump-object (layout-length obj) file)
1350 (dump-fop 'fop-layout file))