1 ;;;; "cold" core image builder: This is how we create a target Lisp
2 ;;;; system from scratch, by converting from fasl files to an image
3 ;;;; file in the cross-compilation host, without the help of the
4 ;;;; target Lisp system.
6 ;;;; As explained by Rob MacLachlan on the CMU CL mailing list Wed, 06
7 ;;;; Jan 1999 11:05:02 -0500, this cold load generator more or less
8 ;;;; fakes up static function linking. I.e. it makes sure that all the
9 ;;;; DEFUN-defined functions in the fasl files it reads are bound to the
10 ;;;; corresponding symbols before execution starts. It doesn't do
11 ;;;; anything to initialize variable values; instead it just arranges
12 ;;;; for !COLD-INIT to be called at cold load time. !COLD-INIT is
13 ;;;; responsible for explicitly initializing anything which has to be
14 ;;;; initialized early before it transfers control to the ordinary
17 ;;;; (In CMU CL, and in SBCL as of 0.6.9 anyway, functions not defined
18 ;;;; by DEFUN aren't set up specially by GENESIS. In particular,
19 ;;;; structure slot accessors are not set up. Slot accessors are
20 ;;;; available at cold init time because they're usually compiled
21 ;;;; inline. They're not available as out-of-line functions until the
22 ;;;; toplevel forms installing them have run.)
24 ;;;; This software is part of the SBCL system. See the README file for
25 ;;;; more information.
27 ;;;; This software is derived from the CMU CL system, which was
28 ;;;; written at Carnegie Mellon University and released into the
29 ;;;; public domain. The software is in the public domain and is
30 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
31 ;;;; files for more information.
33 (in-package "SB!FASL")
35 ;;; a magic number used to identify our core files
36 (defconstant core-magic
37 (logior (ash (char-code #\S) 24)
38 (ash (char-code #\B) 16)
39 (ash (char-code #\C) 8)
42 ;;; the current version of SBCL core files
44 ;;; FIXME: This is left over from CMU CL, and not well thought out.
45 ;;; It's good to make sure that the runtime doesn't try to run core
46 ;;; files from the wrong version, but a single number is not the ideal
47 ;;; way to do this in high level data like this (as opposed to e.g. in
48 ;;; IP packets), and in fact the CMU CL version number never ended up
49 ;;; being incremented past 0. A better approach might be to use a
50 ;;; string which is set from CVS data.
52 ;;; 0: inherited from CMU CL
53 ;;; 1: rearranged static symbols for sbcl-0.6.8
54 ;;; 2: eliminated non-ANSI %DEFCONSTANT/%%DEFCONSTANT support,
55 ;;; deleted a slot from DEBUG-SOURCE structure
56 (defconstant sbcl-core-version-integer 2)
58 (defun round-up (number size)
60 "Round NUMBER up to be an integral multiple of SIZE."
61 (* size (ceiling number size)))
63 ;;;; representation of spaces in the core
65 ;;; If there is more than one dynamic space in memory (i.e., if a
66 ;;; copying GC is in use), then only the active dynamic space gets
69 (defconstant dynamic-space-id 1)
72 (defconstant static-space-id 2)
75 (defconstant read-only-space-id 3)
77 (defconstant descriptor-low-bits 16
78 "the number of bits in the low half of the descriptor")
79 (defconstant target-space-alignment (ash 1 descriptor-low-bits)
80 "the alignment requirement for spaces in the target.
81 Must be at least (ASH 1 DESCRIPTOR-LOW-BITS)")
83 ;;; a GENESIS-time representation of a memory space (e.g. read-only space,
84 ;;; dynamic space, or static space)
85 (defstruct (gspace (:constructor %make-gspace)
87 ;; name and identifier for this GSPACE
88 (name (required-argument) :type symbol :read-only t)
89 (identifier (required-argument) :type fixnum :read-only t)
90 ;; the word address where the data will be loaded
91 (word-address (required-argument) :type unsigned-byte :read-only t)
92 ;; the data themselves. (Note that in CMU CL this was a pair
93 ;; of fields SAP and WORDS-ALLOCATED, but that wasn't very portable.)
94 (bytes (make-array target-space-alignment :element-type '(unsigned-byte 8))
95 :type (simple-array (unsigned-byte 8) 1))
96 ;; the index of the next unwritten word (i.e. chunk of
97 ;; SB!VM:WORD-BYTES bytes) in BYTES, or equivalently the number of
98 ;; words actually written in BYTES. In order to convert to an actual
99 ;; index into BYTES, thus must be multiplied by SB!VM:WORD-BYTES.
102 (defun gspace-byte-address (gspace)
103 (ash (gspace-word-address gspace) sb!vm:word-shift))
105 (def!method print-object ((gspace gspace) stream)
106 (print-unreadable-object (gspace stream :type t)
107 (format stream "~S" (gspace-name gspace))))
109 (defun make-gspace (name identifier byte-address)
110 (unless (zerop (rem byte-address target-space-alignment))
111 (error "The byte address #X~X is not aligned on a #X~X-byte boundary."
113 target-space-alignment))
114 (%make-gspace :name name
115 :identifier identifier
116 :word-address (ash byte-address (- sb!vm:word-shift))))
118 ;;; KLUDGE: Doing it this way seems to partly replicate the
119 ;;; functionality of Common Lisp adjustable arrays. Is there any way
120 ;;; to do this stuff in one line of code by using standard Common Lisp
121 ;;; stuff? -- WHN 19990816
122 (defun expand-gspace-bytes (gspace)
123 (let* ((old-bytes (gspace-bytes gspace))
124 (old-length (length old-bytes))
125 (new-length (* 2 old-length))
126 (new-bytes (make-array new-length :element-type '(unsigned-byte 8))))
127 (replace new-bytes old-bytes :end1 old-length)
128 (setf (gspace-bytes gspace)
132 ;;;; representation of descriptors
134 (defstruct (descriptor
135 (:constructor make-descriptor
136 (high low &optional gspace word-offset))
138 ;; the GSPACE that this descriptor is allocated in, or NIL if not set yet.
139 (gspace nil :type (or gspace null))
140 ;; the offset in words from the start of GSPACE, or NIL if not set yet
141 (word-offset nil :type (or (unsigned-byte #.sb!vm:word-bits) null))
142 ;; the high and low halves of the descriptor KLUDGE: Judging from
143 ;; the comments in genesis.lisp of the CMU CL old-rt compiler, this
144 ;; split dates back from a very early version of genesis where
145 ;; 32-bit integers were represented as conses of two 16-bit
146 ;; integers. In any system with nice (UNSIGNED-BYTE 32) structure
147 ;; slots, like CMU CL >= 17 or any version of SBCL, there seems to
148 ;; be no reason to persist in this. -- WHN 19990917
150 (def!method print-object ((des descriptor) stream)
151 (let ((lowtag (descriptor-lowtag des)))
152 (print-unreadable-object (des stream :type t)
153 (cond ((or (= lowtag sb!vm:even-fixnum-type)
154 (= lowtag sb!vm:odd-fixnum-type))
155 (let ((unsigned (logior (ash (descriptor-high des)
156 (1+ (- descriptor-low-bits
158 (ash (descriptor-low des)
159 (- 1 sb!vm:lowtag-bits)))))
162 (if (> unsigned #x1FFFFFFF)
163 (- unsigned #x40000000)
165 ((or (= lowtag sb!vm:other-immediate-0-type)
166 (= lowtag sb!vm:other-immediate-1-type))
168 "for other immediate: #X~X, type #b~8,'0B"
169 (ash (descriptor-bits des) (- sb!vm:type-bits))
170 (logand (descriptor-low des) sb!vm:type-mask)))
173 "for pointer: #X~X, lowtag #b~3,'0B, ~A"
174 (logior (ash (descriptor-high des) descriptor-low-bits)
175 (logandc2 (descriptor-low des) sb!vm:lowtag-mask))
177 (let ((gspace (descriptor-gspace des)))
182 (defun allocate-descriptor (gspace length lowtag)
184 "Return a descriptor for a block of LENGTH bytes out of GSPACE. The free
185 word index is boosted as necessary, and if additional memory is needed, we
186 grow the GSPACE. The descriptor returned is a pointer of type LOWTAG."
187 (let* ((bytes (round-up length (ash 1 sb!vm:lowtag-bits)))
188 (old-free-word-index (gspace-free-word-index gspace))
189 (new-free-word-index (+ old-free-word-index
190 (ash bytes (- sb!vm:word-shift)))))
191 ;; Grow GSPACE as necessary until it's big enough to handle
192 ;; NEW-FREE-WORD-INDEX.
194 ((>= (length (gspace-bytes gspace))
195 (* new-free-word-index sb!vm:word-bytes)))
196 (expand-gspace-bytes gspace))
197 ;; Now that GSPACE is big enough, we can meaningfully grab a chunk of it.
198 (setf (gspace-free-word-index gspace) new-free-word-index)
199 (let ((ptr (+ (gspace-word-address gspace) old-free-word-index)))
200 (make-descriptor (ash ptr (- sb!vm:word-shift descriptor-low-bits))
201 (logior (ash (logand ptr
203 (- descriptor-low-bits
208 old-free-word-index))))
210 (defun descriptor-lowtag (des)
212 "the lowtag bits for DES"
213 (logand (descriptor-low des) sb!vm:lowtag-mask))
215 (defun descriptor-bits (des)
216 (logior (ash (descriptor-high des) descriptor-low-bits)
217 (descriptor-low des)))
219 (defun descriptor-fixnum (des)
220 (let ((bits (descriptor-bits des)))
221 (if (logbitp (1- sb!vm:word-bits) bits)
222 ;; KLUDGE: The (- SB!VM:WORD-BITS 2) term here looks right to
223 ;; me, and it works, but in CMU CL it was (1- SB!VM:WORD-BITS),
224 ;; and although that doesn't make sense for me, or work for me,
225 ;; it's hard to see how it could have been wrong, since CMU CL
226 ;; genesis worked. It would be nice to understand how this came
227 ;; to be.. -- WHN 19990901
228 (logior (ash bits -2) (ash -1 (- sb!vm:word-bits 2)))
232 (defun descriptor-bytes (des)
233 (gspace-bytes (descriptor-intuit-gspace des)))
234 (defun descriptor-byte-offset (des)
235 (ash (descriptor-word-offset des) sb!vm:word-shift))
237 ;;; If DESCRIPTOR-GSPACE is already set, just return that. Otherwise,
238 ;;; figure out a GSPACE which corresponds to DES, set it into
239 ;;; (DESCRIPTOR-GSPACE DES), set a consistent value into
240 ;;; (DESCRIPTOR-WORD-OFFSET DES), and return the GSPACE.
241 (declaim (ftype (function (descriptor) gspace) descriptor-intuit-gspace))
242 (defun descriptor-intuit-gspace (des)
243 (if (descriptor-gspace des)
244 (descriptor-gspace des)
245 ;; KLUDGE: It's not completely clear to me what's going on here;
246 ;; this is a literal translation from of some rather mysterious
247 ;; code from CMU CL's DESCRIPTOR-SAP function. Some explanation
248 ;; would be nice. -- WHN 19990817
249 (let ((lowtag (descriptor-lowtag des))
250 (high (descriptor-high des))
251 (low (descriptor-low des)))
252 (if (or (eql lowtag sb!vm:function-pointer-type)
253 (eql lowtag sb!vm:instance-pointer-type)
254 (eql lowtag sb!vm:list-pointer-type)
255 (eql lowtag sb!vm:other-pointer-type))
256 (dolist (gspace (list *dynamic* *static* *read-only*)
257 (error "couldn't find a GSPACE for ~S" des))
258 ;; This code relies on the fact that GSPACEs are aligned such that
259 ;; the descriptor-low-bits low bits are zero.
260 (when (and (>= high (ash (gspace-word-address gspace)
261 (- sb!vm:word-shift descriptor-low-bits)))
262 (<= high (ash (+ (gspace-word-address gspace)
263 (gspace-free-word-index gspace))
264 (- sb!vm:word-shift descriptor-low-bits))))
265 (setf (descriptor-gspace des) gspace)
266 (setf (descriptor-word-offset des)
267 (+ (ash (- high (ash (gspace-word-address gspace)
269 descriptor-low-bits)))
270 (- descriptor-low-bits sb!vm:word-shift))
271 (ash (logandc2 low sb!vm:lowtag-mask)
272 (- sb!vm:word-shift))))
274 (error "don't even know how to look for a GSPACE for ~S" des)))))
276 (defun make-random-descriptor (value)
277 (make-descriptor (logand (ash value (- descriptor-low-bits))
279 (- sb!vm:word-bits descriptor-low-bits))))
280 (logand value (1- (ash 1 descriptor-low-bits)))))
282 (defun make-fixnum-descriptor (num)
283 (when (>= (integer-length num)
284 (1+ (- sb!vm:word-bits sb!vm:lowtag-bits)))
285 (error "~D is too big for a fixnum." num))
286 (make-random-descriptor (ash num (1- sb!vm:lowtag-bits))))
288 (defun make-other-immediate-descriptor (data type)
289 (make-descriptor (ash data (- sb!vm:type-bits descriptor-low-bits))
290 (logior (logand (ash data (- descriptor-low-bits
292 (1- (ash 1 descriptor-low-bits)))
295 (defun make-character-descriptor (data)
296 (make-other-immediate-descriptor data sb!vm:base-char-type))
298 (defun descriptor-beyond (des offset type)
299 (let* ((low (logior (+ (logandc2 (descriptor-low des) sb!vm:lowtag-mask)
302 (high (+ (descriptor-high des)
303 (ash low (- descriptor-low-bits)))))
304 (make-descriptor high (logand low (1- (ash 1 descriptor-low-bits))))))
306 ;;;; miscellaneous variables and other noise
308 ;;; a numeric value to be returned for undefined foreign symbols, or NIL if
309 ;;; undefined foreign symbols are to be treated as an error.
310 ;;; (In the first pass of GENESIS, needed to create a header file before
311 ;;; the C runtime can be built, various foreign symbols will necessarily
312 ;;; be undefined, but we don't need actual values for them anyway, and
313 ;;; we can just use 0 or some other placeholder. In the second pass of
314 ;;; GENESIS, all foreign symbols should be defined, so any undefined
315 ;;; foreign symbol is a problem.)
317 ;;; KLUDGE: It would probably be cleaner to rewrite GENESIS so that it
318 ;;; never tries to look up foreign symbols in the first place unless
319 ;;; it's actually creating a core file (as in the second pass) instead
320 ;;; of using this hack to allow it to go through the motions without
321 ;;; causing an error. -- WHN 20000825
322 (defvar *foreign-symbol-placeholder-value*)
324 ;;; a handle on the trap object
325 (defvar *unbound-marker*)
326 ;; was: (make-other-immediate-descriptor 0 sb!vm:unbound-marker-type)
328 ;;; a handle on the NIL object
329 (defvar *nil-descriptor*)
331 ;;; the head of a list of TOPLEVEL-THINGs describing stuff to be done
332 ;;; when the target Lisp starts up
334 ;;; Each TOPLEVEL-THING can be a function to be executed or a fixup or
335 ;;; loadtime value, represented by (CONS KEYWORD ..). The FILENAME
336 ;;; tells which fasl file each list element came from, for debugging
338 (defvar *current-reversed-cold-toplevels*)
340 ;;; the name of the object file currently being cold loaded (as a string, not a
341 ;;; pathname), or NIL if we're not currently cold loading any object file
342 (defvar *cold-load-filename* nil)
343 (declaim (type (or string null) *cold-load-filename*))
345 ;;; This is vestigial support for the CMU CL byte-swapping code. CMU
346 ;;; CL code tested for whether it needed to swap bytes in GENESIS by
347 ;;; comparing the byte order of *BACKEND* to the byte order of
348 ;;; *NATIVE-BACKEND*, a concept which doesn't exist in SBCL. Instead,
349 ;;; in SBCL byte order swapping would need to be explicitly requested
350 ;;; with a &KEY argument to GENESIS.
352 ;;; I'm not sure whether this is a problem or not, and I don't have a
353 ;;; machine with different byte order to test to find out for sure.
354 ;;; The version of the system which is fed to the cross-compiler is
355 ;;; now written in a subset of Common Lisp which doesn't require
356 ;;; dumping a lot of things in such a way that machine byte order
357 ;;; matters. (Mostly this is a matter of not using any specialized
358 ;;; array type unless there's portable, high-level code to dump it.)
359 ;;; If it *is* a problem, and you're trying to resurrect this code,
360 ;;; please test particularly carefully, since I haven't had a chance
361 ;;; to test the byte-swapping code at all. -- WHN 19990816
363 ;;; When this variable is non-NIL, byte-swapping is enabled wherever
364 ;;; classic GENESIS would have done it. I.e. the value of this variable
365 ;;; is the logical complement of
366 ;;; (EQ (SB!C:BACKEND-BYTE-ORDER SB!C:*NATIVE-BACKEND*)
367 ;;; (SB!C:BACKEND-BYTE-ORDER SB!C:*BACKEND*))
369 (defvar *genesis-byte-order-swap-p*)
371 ;;;; miscellaneous stuff to read and write the core memory
373 ;;; FIXME: should be DEFINE-MODIFY-MACRO
374 (defmacro cold-push (thing list)
376 "Push THING onto the given cold-load LIST."
377 `(setq ,list (cold-cons ,thing ,list)))
379 (defun maybe-byte-swap (word)
380 (declare (type (unsigned-byte 32) word))
381 (aver (= sb!vm:word-bits 32))
382 (aver (= sb!vm:byte-bits 8))
383 (if (not *genesis-byte-order-swap-p*)
385 (logior (ash (ldb (byte 8 0) word) 24)
386 (ash (ldb (byte 8 8) word) 16)
387 (ash (ldb (byte 8 16) word) 8)
388 (ldb (byte 8 24) word))))
390 (defun maybe-byte-swap-short (short)
391 (declare (type (unsigned-byte 16) short))
392 (aver (= sb!vm:word-bits 32))
393 (aver (= sb!vm:byte-bits 8))
394 (if (not *genesis-byte-order-swap-p*)
396 (logior (ash (ldb (byte 8 0) short) 8)
397 (ldb (byte 8 8) short))))
399 ;;; BYTE-VECTOR-REF-32 and friends. These are like SAP-REF-n, except
400 ;;; that instead of a SAP we use a byte vector
401 (macrolet ((make-byte-vector-ref-n
403 (let* ((name (intern (format nil "BYTE-VECTOR-REF-~A" n)))
404 (number-octets (/ n 8))
406 (loop for i from 0 to (1- number-octets)
407 collect `(ash (aref byte-vector (+ byte-index ,i))
410 (loop for i from 0 to (1- number-octets)
412 `((aref byte-vector (+ byte-index ,i))
413 (ldb (byte 8 ,(* i 8)) new-value)))))
415 (defun ,name (byte-vector byte-index)
416 (aver (= sb!vm:word-bits 32))
417 (aver (= sb!vm:byte-bits 8))
418 (ecase sb!c:*backend-byte-order*
422 (error "stub: no big-endian ports of SBCL (yet?)"))))
423 (defun (setf ,name) (new-value byte-vector byte-index)
424 (aver (= sb!vm:word-bits 32))
425 (aver (= sb!vm:byte-bits 8))
426 (ecase sb!c:*backend-byte-order*
430 (error "stub: no big-endian ports of SBCL (yet?)"))))))))
431 (make-byte-vector-ref-n 8)
432 (make-byte-vector-ref-n 16)
433 (make-byte-vector-ref-n 32))
435 (declaim (ftype (function (descriptor sb!vm:word) descriptor) read-wordindexed))
436 (defun read-wordindexed (address index)
438 "Return the value which is displaced by INDEX words from ADDRESS."
439 (let* ((gspace (descriptor-intuit-gspace address))
440 (bytes (gspace-bytes gspace))
441 (byte-index (ash (+ index (descriptor-word-offset address))
443 ;; KLUDGE: Do we really need to do byte swap here? It seems
444 ;; as though we shouldn't.. (This attempts to be a literal
445 ;; translation of CMU CL code, and I don't have a big-endian
446 ;; machine to test it.) -- WHN 19990817
447 (value (maybe-byte-swap (byte-vector-ref-32 bytes byte-index))))
448 (make-random-descriptor value)))
450 (declaim (ftype (function (descriptor) descriptor) read-memory))
451 (defun read-memory (address)
453 "Return the value at ADDRESS."
454 (read-wordindexed address 0))
456 ;;; (Note: In CMU CL, this function expected a SAP-typed ADDRESS
457 ;;; value, instead of the SAPINT we use here.)
458 (declaim (ftype (function (sb!vm:word descriptor) (values)) note-load-time-value-reference))
459 (defun note-load-time-value-reference (address marker)
460 (cold-push (cold-cons
461 (cold-intern :load-time-value-fixup)
462 (cold-cons (sapint-to-core address)
464 (number-to-core (descriptor-word-offset marker))
466 *current-reversed-cold-toplevels*)
469 (declaim (ftype (function (descriptor sb!vm:word descriptor)) write-wordindexed))
470 (defun write-wordindexed (address index value)
472 "Write VALUE displaced INDEX words from ADDRESS."
473 ;; KLUDGE: There is an algorithm (used in DESCRIPTOR-INTUIT-GSPACE)
474 ;; for calculating the value of the GSPACE slot from scratch. It
475 ;; doesn't work for all values, only some of them, but mightn't it
476 ;; be reasonable to see whether it works on VALUE before we give up
477 ;; because (DESCRIPTOR-GSPACE VALUE) isn't set? (Or failing that,
478 ;; perhaps write a comment somewhere explaining why it's not a good
479 ;; idea?) -- WHN 19990817
480 (if (and (null (descriptor-gspace value))
481 (not (null (descriptor-word-offset value))))
482 (note-load-time-value-reference (+ (logandc2 (descriptor-bits address)
484 (ash index sb!vm:word-shift))
486 ;; Note: There's a MAYBE-BYTE-SWAP in here in CMU CL, which I
487 ;; think is unnecessary now that we're doing the write
488 ;; byte-by-byte at high level. (I can't test this, though..) --
490 (let* ((bytes (gspace-bytes (descriptor-intuit-gspace address)))
491 (byte-index (ash (+ index (descriptor-word-offset address))
493 (setf (byte-vector-ref-32 bytes byte-index)
494 (maybe-byte-swap (descriptor-bits value))))))
496 (declaim (ftype (function (descriptor descriptor)) write-memory))
497 (defun write-memory (address value)
499 "Write VALUE (a DESCRIPTOR) at ADDRESS (also a DESCRIPTOR)."
500 (write-wordindexed address 0 value))
502 ;;;; allocating images of primitive objects in the cold core
504 ;;; There are three kinds of blocks of memory in the type system:
505 ;;; * Boxed objects (cons cells, structures, etc): These objects have no
506 ;;; header as all slots are descriptors.
507 ;;; * Unboxed objects (bignums): There is a single header word that contains
509 ;;; * Vector objects: There is a header word with the type, then a word for
510 ;;; the length, then the data.
511 (defun allocate-boxed-object (gspace length lowtag)
513 "Allocate LENGTH words in GSPACE and return a new descriptor of type LOWTAG
515 (allocate-descriptor gspace (ash length sb!vm:word-shift) lowtag))
516 (defun allocate-unboxed-object (gspace element-bits length type)
518 "Allocate LENGTH units of ELEMENT-BITS bits plus a header word in GSPACE and
519 return an ``other-pointer'' descriptor to them. Initialize the header word
520 with the resultant length and TYPE."
521 (let* ((bytes (/ (* element-bits length) sb!vm:byte-bits))
522 (des (allocate-descriptor gspace
523 (+ bytes sb!vm:word-bytes)
524 sb!vm:other-pointer-type)))
526 (make-other-immediate-descriptor (ash bytes
527 (- sb!vm:word-shift))
530 (defun allocate-vector-object (gspace element-bits length type)
532 "Allocate LENGTH units of ELEMENT-BITS size plus a header plus a length slot in
533 GSPACE and return an ``other-pointer'' descriptor to them. Initialize the
534 header word with TYPE and the length slot with LENGTH."
535 ;; FIXME: Here and in ALLOCATE-UNBOXED-OBJECT, BYTES is calculated using
536 ;; #'/ instead of #'CEILING, which seems wrong.
537 (let* ((bytes (/ (* element-bits length) sb!vm:byte-bits))
538 (des (allocate-descriptor gspace (+ bytes (* 2 sb!vm:word-bytes))
539 sb!vm:other-pointer-type)))
540 (write-memory des (make-other-immediate-descriptor 0 type))
541 (write-wordindexed des
542 sb!vm:vector-length-slot
543 (make-fixnum-descriptor length))
546 ;;;; copying simple objects into the cold core
548 (defun string-to-core (string &optional (gspace *dynamic*))
550 "Copy string into the cold core and return a descriptor to it."
551 ;; (Remember that the system convention for storage of strings leaves an
552 ;; extra null byte at the end to aid in call-out to C.)
553 (let* ((length (length string))
554 (des (allocate-vector-object gspace
557 sb!vm:simple-string-type))
558 (bytes (gspace-bytes gspace))
559 (offset (+ (* sb!vm:vector-data-offset sb!vm:word-bytes)
560 (descriptor-byte-offset des))))
561 (write-wordindexed des
562 sb!vm:vector-length-slot
563 (make-fixnum-descriptor length))
565 (setf (aref bytes (+ offset i))
566 ;; KLUDGE: There's no guarantee that the character
567 ;; encoding here will be the same as the character
568 ;; encoding on the target machine, so using CHAR-CODE as
569 ;; we do, or a bitwise copy as CMU CL code did, is sleazy.
570 ;; (To make this more portable, perhaps we could use
571 ;; indices into the sequence which is used to test whether
572 ;; a character is a STANDARD-CHAR?) -- WHN 19990817
573 (char-code (aref string i))))
574 (setf (aref bytes (+ offset length))
575 0) ; null string-termination character for C
578 (defun bignum-to-core (n)
580 "Copy a bignum to the cold core."
581 (let* ((words (ceiling (1+ (integer-length n)) sb!vm:word-bits))
582 (handle (allocate-unboxed-object *dynamic*
586 (declare (fixnum words))
587 (do ((index 1 (1+ index))
588 (remainder n (ash remainder (- sb!vm:word-bits))))
590 (unless (zerop (integer-length remainder))
591 ;; FIXME: Shouldn't this be a fatal error?
592 (warn "~D words of ~D were written, but ~D bits were left over."
594 (let ((word (ldb (byte sb!vm:word-bits 0) remainder)))
595 (write-wordindexed handle index
596 (make-descriptor (ash word (- descriptor-low-bits))
597 (ldb (byte descriptor-low-bits 0)
601 (defun number-pair-to-core (first second type)
603 "Makes a number pair of TYPE (ratio or complex) and fills it in."
604 (let ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits 2 type)))
605 (write-wordindexed des 1 first)
606 (write-wordindexed des 2 second)
609 (defun float-to-core (x)
612 (let ((des (allocate-unboxed-object *dynamic*
614 (1- sb!vm:single-float-size)
615 sb!vm:single-float-type)))
616 (write-wordindexed des
617 sb!vm:single-float-value-slot
618 (make-random-descriptor (single-float-bits x)))
621 (let ((des (allocate-unboxed-object *dynamic*
623 (1- sb!vm:double-float-size)
624 sb!vm:double-float-type))
625 (high-bits (make-random-descriptor (double-float-high-bits x)))
626 (low-bits (make-random-descriptor (double-float-low-bits x))))
627 (ecase sb!c:*backend-byte-order*
629 (write-wordindexed des sb!vm:double-float-value-slot low-bits)
630 (write-wordindexed des (1+ sb!vm:double-float-value-slot) high-bits))
632 (write-wordindexed des sb!vm:double-float-value-slot high-bits)
633 (write-wordindexed des (1+ sb!vm:double-float-value-slot) low-bits)))
635 #!+(and long-float x86)
637 (let ((des (allocate-unboxed-object *dynamic*
639 (1- sb!vm:long-float-size)
640 sb!vm:long-float-type))
641 (exp-bits (make-random-descriptor (long-float-exp-bits x)))
642 (high-bits (make-random-descriptor (long-float-high-bits x)))
643 (low-bits (make-random-descriptor (long-float-low-bits x))))
644 (ecase sb!c:*backend-byte-order*
646 (write-wordindexed des sb!vm:long-float-value-slot low-bits)
647 (write-wordindexed des (1+ sb!vm:long-float-value-slot) high-bits)
648 (write-wordindexed des (+ 2 sb!vm:long-float-value-slot) exp-bits))
650 (error "LONG-FLOAT is not supported for big-endian byte order.")))
653 (defun complex-single-float-to-core (num)
654 (declare (type (complex single-float) num))
655 (let ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits
656 (1- sb!vm:complex-single-float-size)
657 sb!vm:complex-single-float-type)))
658 (write-wordindexed des sb!vm:complex-single-float-real-slot
659 (make-random-descriptor (single-float-bits (realpart num))))
660 (write-wordindexed des sb!vm:complex-single-float-imag-slot
661 (make-random-descriptor (single-float-bits (imagpart num))))
664 (defun complex-double-float-to-core (num)
665 (declare (type (complex double-float) num))
666 (let ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits
667 (1- sb!vm:complex-double-float-size)
668 sb!vm:complex-double-float-type)))
669 (let* ((real (realpart num))
670 (high-bits (make-random-descriptor (double-float-high-bits real)))
671 (low-bits (make-random-descriptor (double-float-low-bits real))))
672 (ecase sb!c:*backend-byte-order*
674 (write-wordindexed des sb!vm:complex-double-float-real-slot low-bits)
675 (write-wordindexed des (1+ sb!vm:complex-double-float-real-slot) high-bits))
677 (write-wordindexed des sb!vm:complex-double-float-real-slot high-bits)
678 (write-wordindexed des (1+ sb!vm:complex-double-float-real-slot) low-bits))))
679 (let* ((imag (imagpart num))
680 (high-bits (make-random-descriptor (double-float-high-bits imag)))
681 (low-bits (make-random-descriptor (double-float-low-bits imag))))
682 (ecase sb!c:*backend-byte-order*
684 (write-wordindexed des sb!vm:complex-double-float-imag-slot low-bits)
685 (write-wordindexed des (1+ sb!vm:complex-double-float-imag-slot) high-bits))
687 (write-wordindexed des sb!vm:complex-double-float-imag-slot high-bits)
688 (write-wordindexed des (1+ sb!vm:complex-double-float-imag-slot) low-bits))))
691 (defun number-to-core (number)
693 "Copy the given number to the core, or flame out if we can't deal with it."
695 (integer (if (< (integer-length number) 30)
696 (make-fixnum-descriptor number)
697 (bignum-to-core number)))
698 (ratio (number-pair-to-core (number-to-core (numerator number))
699 (number-to-core (denominator number))
701 ((complex single-float) (complex-single-float-to-core number))
702 ((complex double-float) (complex-double-float-to-core number))
704 ((complex long-float)
705 (error "~S isn't a cold-loadable number at all!" number))
706 (complex (number-pair-to-core (number-to-core (realpart number))
707 (number-to-core (imagpart number))
709 (float (float-to-core number))
710 (t (error "~S isn't a cold-loadable number at all!" number))))
712 (declaim (ftype (function (sb!vm:word) descriptor) sap-to-core))
713 (defun sapint-to-core (sapint)
714 (let ((des (allocate-unboxed-object *dynamic*
718 (write-wordindexed des
719 sb!vm:sap-pointer-slot
720 (make-random-descriptor sapint))
723 ;;; Allocate a cons cell in GSPACE and fill it in with CAR and CDR.
724 (defun cold-cons (car cdr &optional (gspace *dynamic*))
725 (let ((dest (allocate-boxed-object gspace 2 sb!vm:list-pointer-type)))
726 (write-memory dest car)
727 (write-wordindexed dest 1 cdr)
730 ;;; Make a simple-vector that holds the specified OBJECTS, and return its
732 (defun vector-in-core (&rest objects)
733 (let* ((size (length objects))
734 (result (allocate-vector-object *dynamic* sb!vm:word-bits size
735 sb!vm:simple-vector-type)))
736 (dotimes (index size)
737 (write-wordindexed result (+ index sb!vm:vector-data-offset)
743 ;;; FIXME: This should be a &KEY argument of ALLOCATE-SYMBOL.
744 (defvar *cold-symbol-allocation-gspace* nil)
746 ;;; Allocate (and initialize) a symbol.
747 (defun allocate-symbol (name)
748 (declare (simple-string name))
749 (let ((symbol (allocate-unboxed-object (or *cold-symbol-allocation-gspace*
752 (1- sb!vm:symbol-size)
753 sb!vm:symbol-header-type)))
754 (write-wordindexed symbol sb!vm:symbol-value-slot *unbound-marker*)
756 (write-wordindexed symbol
757 sb!vm:symbol-hash-slot
758 (make-fixnum-descriptor
759 (1+ (random sb!vm:*target-most-positive-fixnum*))))
760 (write-wordindexed symbol sb!vm:symbol-plist-slot *nil-descriptor*)
761 (write-wordindexed symbol sb!vm:symbol-name-slot
762 (string-to-core name *dynamic*))
763 (write-wordindexed symbol sb!vm:symbol-package-slot *nil-descriptor*)
766 ;;; Set the cold symbol value of SYMBOL-OR-SYMBOL-DES, which can be either a
767 ;;; descriptor of a cold symbol or (in an abbreviation for the
768 ;;; most common usage pattern) an ordinary symbol, which will be
769 ;;; automatically cold-interned.
770 (declaim (ftype (function ((or descriptor symbol) descriptor)) cold-set))
771 (defun cold-set (symbol-or-symbol-des value)
772 (let ((symbol-des (etypecase symbol-or-symbol-des
773 (descriptor symbol-or-symbol-des)
774 (symbol (cold-intern symbol-or-symbol-des)))))
775 (write-wordindexed symbol-des sb!vm:symbol-value-slot value)))
777 ;;;; layouts and type system pre-initialization
779 ;;; Since we want to be able to dump structure constants and
780 ;;; predicates with reference layouts, we need to create layouts at
781 ;;; cold-load time. We use the name to intern layouts by, and dump a
782 ;;; list of all cold layouts in *!INITIAL-LAYOUTS* so that type system
783 ;;; initialization can find them. The only thing that's tricky [sic --
784 ;;; WHN 19990816] is initializing layout's layout, which must point to
787 ;;; a map from class names to lists of
788 ;;; `(,descriptor ,name ,length ,inherits ,depth)
789 ;;; KLUDGE: It would be more understandable and maintainable to use
790 ;;; DEFSTRUCT (:TYPE LIST) here. -- WHN 19990823
791 (defvar *cold-layouts* (make-hash-table :test 'equal))
793 ;;; a map from DESCRIPTOR-BITS of cold layouts to the name, for inverting
795 (defvar *cold-layout-names* (make-hash-table :test 'eql))
797 ;;; FIXME: *COLD-LAYOUTS* and *COLD-LAYOUT-NAMES* should be
798 ;;; initialized by binding in GENESIS.
800 ;;; the descriptor for layout's layout (needed when making layouts)
801 (defvar *layout-layout*)
803 ;;; FIXME: This information should probably be pulled out of the
804 ;;; cross-compiler's tables at genesis time instead of inserted by
805 ;;; hand here as a bare numeric constant.
806 (defconstant target-layout-length 16)
808 ;;; Return a list of names created from the cold layout INHERITS data
810 (defun listify-cold-inherits (x)
811 (let ((len (descriptor-fixnum (read-wordindexed x
812 sb!vm:vector-length-slot))))
815 (let* ((des (read-wordindexed x (+ sb!vm:vector-data-offset index)))
816 (found (gethash (descriptor-bits des) *cold-layout-names*)))
819 (error "unknown descriptor at index ~S (bits = ~8,'0X)"
821 (descriptor-bits des)))))
824 (declaim (ftype (function (symbol descriptor descriptor descriptor) descriptor)
826 (defun make-cold-layout (name length inherits depthoid)
827 (let ((result (allocate-boxed-object *dynamic*
828 ;; KLUDGE: Why 1+? -- WHN 19990901
829 (1+ target-layout-length)
830 sb!vm:instance-pointer-type)))
832 (make-other-immediate-descriptor target-layout-length
833 sb!vm:instance-header-type))
835 ;; KLUDGE: The offsets into LAYOUT below should probably be pulled out
836 ;; of the cross-compiler's tables at genesis time instead of inserted
837 ;; by hand as bare numeric constants. -- WHN ca. 19990901
839 ;; Set slot 0 = the layout of the layout.
840 (write-wordindexed result sb!vm:instance-slots-offset *layout-layout*)
842 ;; Set the immediately following slots = CLOS hash values.
844 ;; Note: CMU CL didn't set these in genesis, but instead arranged
845 ;; for them to be set at cold init time. That resulted in slightly
846 ;; kludgy-looking code, but there were at least two things to be
848 ;; 1. It put the hash values under the control of the target Lisp's
849 ;; RANDOM function, so that CLOS behavior would be nearly
850 ;; deterministic (instead of depending on the implementation of
851 ;; RANDOM in the cross-compilation host, and the state of its
852 ;; RNG when genesis begins).
853 ;; 2. It automatically ensured that all hash values in the target Lisp
854 ;; were part of the same sequence, so that we didn't have to worry
855 ;; about the possibility of the first hash value set in genesis
856 ;; being precisely equal to the some hash value set in cold init time
857 ;; (because the target Lisp RNG has advanced to precisely the same
858 ;; state that the host Lisp RNG was in earlier).
859 ;; Point 1 should not be an issue in practice because of the way we do our
860 ;; build procedure in two steps, so that the SBCL that we end up with has
861 ;; been created by another SBCL (whose RNG is under our control).
862 ;; Point 2 is more of an issue. If ANSI had provided a way to feed
863 ;; entropy into an RNG, we would have no problem: we'd just feed
864 ;; some specialized genesis-time-only pattern into the RNG state
865 ;; before using it. However, they didn't, so we have a slight
866 ;; problem. We address it by generating the hash values using a
867 ;; different algorithm than we use in ordinary operation.
868 (dotimes (i sb!kernel:layout-clos-hash-length)
869 (let (;; The expression here is pretty arbitrary, we just want
870 ;; to make sure that it's not something which is (1)
871 ;; evenly distributed and (2) not foreordained to arise in
872 ;; the target Lisp's (RANDOM-LAYOUT-CLOS-HASH) sequence
873 ;; and show up as the CLOS-HASH value of some other
876 ;; FIXME: This expression here can generate a zero value,
877 ;; and the CMU CL code goes out of its way to generate
878 ;; strictly positive values (even though the field is
879 ;; declared as an INDEX). Check that it's really OK to
880 ;; have zero values in the CLOS-HASH slots.
881 (hash-value (mod (logxor (logand (random-layout-clos-hash) 15253)
882 (logandc2 (random-layout-clos-hash) 15253)
884 ;; (The MOD here is defensive programming
885 ;; to make sure we never write an
886 ;; out-of-range value even if some joker
887 ;; sets LAYOUT-CLOS-HASH-MAX to other
888 ;; than 2^n-1 at some time in the
890 (1+ sb!kernel:layout-clos-hash-max))))
891 (write-wordindexed result
892 (+ i sb!vm:instance-slots-offset 1)
893 (make-fixnum-descriptor hash-value))))
895 ;; Set other slot values.
896 (let ((base (+ sb!vm:instance-slots-offset
897 sb!kernel:layout-clos-hash-length
899 ;; (Offset 0 is CLASS, "the class this is a layout for", which
900 ;; is uninitialized at this point.)
901 (write-wordindexed result (+ base 1) *nil-descriptor*) ; marked invalid
902 (write-wordindexed result (+ base 2) inherits)
903 (write-wordindexed result (+ base 3) depthoid)
904 (write-wordindexed result (+ base 4) length)
905 (write-wordindexed result (+ base 5) *nil-descriptor*) ; info
906 (write-wordindexed result (+ base 6) *nil-descriptor*)) ; pure
908 (setf (gethash name *cold-layouts*)
911 (descriptor-fixnum length)
912 (listify-cold-inherits inherits)
913 (descriptor-fixnum depthoid)))
914 (setf (gethash (descriptor-bits result) *cold-layout-names*) name)
918 (defun initialize-layouts ()
920 (clrhash *cold-layouts*)
922 ;; We initially create the layout of LAYOUT itself with NIL as the LAYOUT and
924 (setq *layout-layout* *nil-descriptor*)
925 (setq *layout-layout*
926 (make-cold-layout 'layout
927 (number-to-core target-layout-length)
929 ;; FIXME: hard-coded LAYOUT-DEPTHOID of LAYOUT..
931 (write-wordindexed *layout-layout*
932 sb!vm:instance-slots-offset
935 ;; Then we create the layouts that we'll need to make a correct INHERITS
936 ;; vector for the layout of LAYOUT itself..
938 ;; FIXME: The various LENGTH and DEPTHOID numbers should be taken from
939 ;; the compiler's tables, not set by hand.
946 (make-cold-layout 'instance
948 (vector-in-core t-layout)
951 (make-cold-layout 'structure-object
953 (vector-in-core t-layout i-layout)
956 (make-cold-layout 'structure!object
958 (vector-in-core t-layout i-layout so-layout)
960 (layout-inherits (vector-in-core t-layout
965 ;; ..and return to backpatch the layout of LAYOUT.
966 (setf (fourth (gethash 'layout *cold-layouts*))
967 (listify-cold-inherits layout-inherits))
968 (write-wordindexed *layout-layout*
969 ;; FIXME: hardcoded offset into layout struct
970 (+ sb!vm:instance-slots-offset
971 layout-clos-hash-length
976 ;;;; interning symbols in the cold image
978 ;;; In order to avoid having to know about the package format, we
979 ;;; build a data structure in *COLD-PACKAGE-SYMBOLS* that holds all
980 ;;; interned symbols along with info about their packages. The data
981 ;;; structure is a list of sublists, where the sublists have the
982 ;;; following format:
983 ;;; (<make-package-arglist>
984 ;;; <internal-symbols>
985 ;;; <external-symbols>
986 ;;; <imported-internal-symbols>
987 ;;; <imported-external-symbols>
988 ;;; <shadowing-symbols>)
990 ;;; KLUDGE: It would be nice to implement the sublists as instances of
991 ;;; a DEFSTRUCT (:TYPE LIST). (They'd still be lists, but at least we'd be
992 ;;; using mnemonically-named operators to access them, instead of trying
993 ;;; to remember what THIRD and FIFTH mean, and hoping that we never
994 ;;; need to change the list layout..) -- WHN 19990825
996 ;;; an alist from packages to lists of that package's symbols to be dumped
997 (defvar *cold-package-symbols*)
998 (declaim (type list *cold-package-symbols*))
1000 ;;; a map from descriptors to symbols, so that we can back up. The key is the
1001 ;;; address in the target core.
1002 (defvar *cold-symbols*)
1003 (declaim (type hash-table *cold-symbols*))
1005 ;;; Return a handle on an interned symbol. If necessary allocate the
1006 ;;; symbol and record which package the symbol was referenced in. When
1007 ;;; we allocate the symbol, make sure we record a reference to the
1008 ;;; symbol in the home package so that the package gets set.
1009 (defun cold-intern (symbol &optional (package (symbol-package symbol)))
1011 ;; Anything on the cross-compilation host which refers to the target
1012 ;; machinery through the host SB-XC package can be translated to
1013 ;; something on the target which refers to the same machinery
1014 ;; through the target COMMON-LISP package.
1015 (let ((p (find-package "SB-XC")))
1016 (when (eq package p)
1017 (setf package *cl-package*))
1018 (when (eq (symbol-package symbol) p)
1019 (setf symbol (intern (symbol-name symbol) *cl-package*))))
1021 (let (;; Information about each cold-interned symbol is stored
1022 ;; in COLD-INTERN-INFO.
1023 ;; (CAR COLD-INTERN-INFO) = descriptor of symbol
1024 ;; (CDR COLD-INTERN-INFO) = list of packages, other than symbol's
1025 ;; own package, referring to symbol
1026 ;; (*COLD-PACKAGE-SYMBOLS* and *COLD-SYMBOLS* store basically the same
1027 ;; information, but with the mapping running the opposite way.)
1028 (cold-intern-info (get symbol 'cold-intern-info)))
1029 (unless cold-intern-info
1030 (cond ((eq (symbol-package symbol) package)
1031 (let ((handle (allocate-symbol (symbol-name symbol))))
1032 (setf (gethash (descriptor-bits handle) *cold-symbols*) symbol)
1033 (when (eq package *keyword-package*)
1034 (cold-set handle handle))
1035 (setq cold-intern-info
1036 (setf (get symbol 'cold-intern-info) (cons handle nil)))))
1038 (cold-intern symbol)
1039 (setq cold-intern-info (get symbol 'cold-intern-info)))))
1040 (unless (or (null package)
1041 (member package (cdr cold-intern-info)))
1042 (push package (cdr cold-intern-info))
1043 (let* ((old-cps-entry (assoc package *cold-package-symbols*))
1044 (cps-entry (or old-cps-entry
1045 (car (push (list package)
1046 *cold-package-symbols*)))))
1047 (unless old-cps-entry
1048 (/show "created *COLD-PACKAGE-SYMBOLS* entry for" package symbol))
1049 (push symbol (rest cps-entry))))
1050 (car cold-intern-info)))
1052 ;;; Construct and return a value for use as *NIL-DESCRIPTOR*.
1053 (defun make-nil-descriptor ()
1054 (let* ((des (allocate-unboxed-object
1059 (result (make-descriptor (descriptor-high des)
1060 (+ (descriptor-low des)
1061 (* 2 sb!vm:word-bytes)
1062 (- sb!vm:list-pointer-type
1063 sb!vm:other-pointer-type)))))
1064 (write-wordindexed des
1066 (make-other-immediate-descriptor
1068 sb!vm:symbol-header-type))
1069 (write-wordindexed des
1070 (+ 1 sb!vm:symbol-value-slot)
1072 (write-wordindexed des
1073 (+ 2 sb!vm:symbol-value-slot)
1075 (write-wordindexed des
1076 (+ 1 sb!vm:symbol-plist-slot)
1078 (write-wordindexed des
1079 (+ 1 sb!vm:symbol-name-slot)
1080 ;; This is *DYNAMIC*, and DES is *STATIC*,
1081 ;; because that's the way CMU CL did it; I'm
1082 ;; not sure whether there's an underlying
1083 ;; reason. -- WHN 1990826
1084 (string-to-core "NIL" *dynamic*))
1085 (write-wordindexed des
1086 (+ 1 sb!vm:symbol-package-slot)
1088 (setf (get nil 'cold-intern-info)
1093 ;;; Since the initial symbols must be allocated before we can intern
1094 ;;; anything else, we intern those here. We also set the value of T.
1095 (defun initialize-non-nil-symbols ()
1097 "Initialize the cold load symbol-hacking data structures."
1098 (let ((*cold-symbol-allocation-gspace* *static*))
1099 ;; Intern the others.
1100 (dolist (symbol sb!vm:*static-symbols*)
1101 (let* ((des (cold-intern symbol))
1102 (offset-wanted (sb!vm:static-symbol-offset symbol))
1103 (offset-found (- (descriptor-low des)
1104 (descriptor-low *nil-descriptor*))))
1105 (unless (= offset-wanted offset-found)
1106 ;; FIXME: should be fatal
1107 (warn "Offset from ~S to ~S is ~D, not ~D"
1112 ;; Establish the value of T.
1113 (let ((t-symbol (cold-intern t)))
1114 (cold-set t-symbol t-symbol))))
1116 ;;; a helper function for FINISH-SYMBOLS: Return a cold alist suitable
1117 ;;; to be stored in *!INITIAL-LAYOUTS*.
1118 (defun cold-list-all-layouts ()
1119 (let ((result *nil-descriptor*))
1120 (maphash (lambda (key stuff)
1121 (cold-push (cold-cons (cold-intern key)
1127 ;;; Establish initial values for magic symbols.
1129 ;;; Scan over all the symbols referenced in each package in
1130 ;;; *COLD-PACKAGE-SYMBOLS* making that for each one there's an
1131 ;;; appropriate entry in the *!INITIAL-SYMBOLS* data structure to
1133 (defun finish-symbols ()
1135 ;; FIXME: Why use SETQ (setting symbol value) instead of just using
1136 ;; the function values for these things?? I.e. why do we need this
1137 ;; section at all? Is it because all the FDEFINITION stuff gets in
1138 ;; the way of reading function values and is too hairy to rely on at
1139 ;; cold boot? FIXME: 5/6 of these are in *STATIC-SYMBOLS* in
1140 ;; parms.lisp, but %HANDLE-FUNCTION-END-BREAKPOINT is not. Why?
1142 (macrolet ((frob (symbol)
1144 (cold-fdefinition-object (cold-intern ',symbol)))))
1147 (frob internal-error)
1148 (frob sb!di::handle-breakpoint)
1149 (frob sb!di::handle-function-end-breakpoint)
1150 (frob fdefinition-object))
1152 (cold-set '*current-catch-block* (make-fixnum-descriptor 0))
1153 (cold-set '*current-unwind-protect-block* (make-fixnum-descriptor 0))
1154 (cold-set '*eval-stack-top* (make-fixnum-descriptor 0))
1156 (cold-set '*free-interrupt-context-index* (make-fixnum-descriptor 0))
1158 (cold-set '*!initial-layouts* (cold-list-all-layouts))
1160 (/show "dumping packages" (mapcar #'car *cold-package-symbols*))
1161 (let ((initial-symbols *nil-descriptor*))
1162 (dolist (cold-package-symbols-entry *cold-package-symbols*)
1163 (let* ((cold-package (car cold-package-symbols-entry))
1164 (symbols (cdr cold-package-symbols-entry))
1165 (shadows (package-shadowing-symbols cold-package))
1166 (internal *nil-descriptor*)
1167 (external *nil-descriptor*)
1168 (imported-internal *nil-descriptor*)
1169 (imported-external *nil-descriptor*)
1170 (shadowing *nil-descriptor*))
1171 (/show "dumping" cold-package symbols)
1173 ;; FIXME: Add assertions here to make sure that inappropriate stuff
1174 ;; isn't being dumped:
1175 ;; * the CL-USER package
1176 ;; * the SB-COLD package
1177 ;; * any internal symbols in the CL package
1178 ;; * basically any package other than CL, KEYWORD, or the packages
1179 ;; in package-data-list.lisp-expr
1180 ;; and that the structure of the KEYWORD package (e.g. whether
1181 ;; any symbols are internal to it) matches what we want in the
1184 ;; FIXME: It seems possible that by looking at the contents of
1185 ;; packages in the target SBCL we could find which symbols in
1186 ;; package-data-lisp.lisp-expr are now obsolete. (If I
1187 ;; understand correctly, only symbols which actually have
1188 ;; definitions or which are otherwise referred to actually end
1189 ;; up in the target packages.)
1191 (dolist (symbol symbols)
1192 (let ((handle (car (get symbol 'cold-intern-info)))
1193 (imported-p (not (eq (symbol-package symbol) cold-package))))
1194 (multiple-value-bind (found where)
1195 (find-symbol (symbol-name symbol) cold-package)
1196 (unless (and where (eq found symbol))
1197 (error "The symbol ~S is not available in ~S."
1200 (when (memq symbol shadows)
1201 (cold-push handle shadowing))
1203 (:internal (if imported-p
1204 (cold-push handle imported-internal)
1205 (cold-push handle internal)))
1206 (:external (if imported-p
1207 (cold-push handle imported-external)
1208 (cold-push handle external)))))))
1209 (let ((r *nil-descriptor*))
1210 (cold-push shadowing r)
1211 (cold-push imported-external r)
1212 (cold-push imported-internal r)
1213 (cold-push external r)
1214 (cold-push internal r)
1215 (cold-push (make-make-package-args cold-package) r)
1216 ;; FIXME: It would be more space-efficient to use vectors
1217 ;; instead of lists here, and space-efficiency here would be
1218 ;; nice, since it would reduce the peak memory usage in
1219 ;; genesis and cold init.
1220 (cold-push r initial-symbols))))
1221 (cold-set '*!initial-symbols* initial-symbols))
1223 (cold-set '*!initial-fdefn-objects* (list-all-fdefn-objects))
1225 (cold-set '*!reversed-cold-toplevels* *current-reversed-cold-toplevels*)
1229 (cold-set 'sb!vm::*fp-constant-0d0* (number-to-core 0d0))
1230 (cold-set 'sb!vm::*fp-constant-1d0* (number-to-core 1d0))
1231 (cold-set 'sb!vm::*fp-constant-0s0* (number-to-core 0s0))
1232 (cold-set 'sb!vm::*fp-constant-1s0* (number-to-core 1s0))
1235 (cold-set 'sb!vm::*fp-constant-0l0* (number-to-core 0L0))
1236 (cold-set 'sb!vm::*fp-constant-1l0* (number-to-core 1L0))
1237 ;; FIXME: Why is initialization of PI conditional on LONG-FLOAT?
1238 ;; (ditto LG2, LN2, L2E, etc.)
1239 (cold-set 'sb!vm::*fp-constant-pi* (number-to-core pi))
1240 (cold-set 'sb!vm::*fp-constant-l2t* (number-to-core (log 10L0 2L0)))
1241 (cold-set 'sb!vm::*fp-constant-l2e*
1242 (number-to-core (log 2.718281828459045235360287471352662L0 2L0)))
1243 (cold-set 'sb!vm::*fp-constant-lg2* (number-to-core (log 2L0 10L0)))
1244 (cold-set 'sb!vm::*fp-constant-ln2*
1246 (log 2L0 2.718281828459045235360287471352662L0))))
1248 (cold-set 'sb!vm::*SCAVENGE-READ-ONLY-GSPACE* *nil-descriptor*)))
1250 ;;; Make a cold list that can be used as the arg list to MAKE-PACKAGE in order
1251 ;;; to make a package that is similar to PKG.
1252 (defun make-make-package-args (pkg)
1253 (let* ((use *nil-descriptor*)
1254 (cold-nicknames *nil-descriptor*)
1255 (res *nil-descriptor*))
1256 (dolist (u (package-use-list pkg))
1257 (when (assoc u *cold-package-symbols*)
1258 (cold-push (string-to-core (package-name u)) use)))
1259 (let* ((pkg-name (package-name pkg))
1260 ;; Make the package nickname lists for the standard packages
1261 ;; be the minimum specified by ANSI, regardless of what value
1262 ;; the cross-compilation host happens to use.
1263 (warm-nicknames (cond ((string= pkg-name "COMMON-LISP")
1265 ((string= pkg-name "COMMON-LISP-USER")
1267 ((string= pkg-name "KEYWORD")
1269 ;; For packages other than the
1270 ;; standard packages, the nickname
1271 ;; list was specified by our package
1272 ;; setup code, not by properties of
1273 ;; what cross-compilation host we
1274 ;; happened to use, and we can just
1275 ;; propagate it into the target.
1277 (package-nicknames pkg)))))
1278 (dolist (warm-nickname warm-nicknames)
1279 (cold-push (string-to-core warm-nickname) cold-nicknames)))
1281 (cold-push (number-to-core (truncate (package-internal-symbol-count pkg)
1284 (cold-push (cold-intern :internal-symbols) res)
1285 (cold-push (number-to-core (truncate (package-external-symbol-count pkg)
1288 (cold-push (cold-intern :external-symbols) res)
1290 (cold-push cold-nicknames res)
1291 (cold-push (cold-intern :nicknames) res)
1294 (cold-push (cold-intern :use) res)
1296 (cold-push (string-to-core (package-name pkg)) res)
1299 ;;;; fdefinition objects
1301 ;;; a hash table mapping from fdefinition names to descriptors of cold
1302 ;;; objects. Note: Since fdefinition names can be lists like '(SETF
1303 ;;; FOO), and we want to have only one entry per name, this must be an
1304 ;;; 'EQUAL hash table, not the default 'EQL.
1305 (defvar *cold-fdefn-objects*)
1307 (defvar *cold-fdefn-gspace* nil)
1309 ;;; Given a cold representation of an FDEFN name, return a warm representation.
1311 ;;; Note: Despite the name, this actually has little to do with
1312 ;;; FDEFNs, it's just a function for warming up values, and the only
1313 ;;; values it knows how to warm up are symbols and lists. (The
1314 ;;; connection to FDEFNs is that symbols and lists are the only
1315 ;;; possible names for functions.)
1316 (declaim (ftype (function (descriptor) (or symbol list)) warm-fdefn-name))
1317 (defun warm-fdefn-name (des)
1318 (ecase (descriptor-lowtag des)
1319 (#.sb!vm:list-pointer-type ; FIXME: no #.
1320 (if (= (descriptor-bits des) (descriptor-bits *nil-descriptor*))
1322 ;; FIXME: If we cold-intern this again, we might get a different
1323 ;; name. Check to make sure that any hash tables along the way
1324 ;; are 'EQUAL not 'EQL.
1325 (cons (warm-fdefn-name (read-wordindexed des sb!vm:cons-car-slot))
1326 (warm-fdefn-name (read-wordindexed des sb!vm:cons-cdr-slot)))))
1327 (#.sb!vm:other-pointer-type ; FIXME: no #.
1328 (or (gethash (descriptor-bits des) *cold-symbols*)
1329 (descriptor-bits des)))))
1331 (defun cold-fdefinition-object (cold-name &optional leave-fn-raw)
1332 (declare (type descriptor cold-name))
1333 (let ((warm-name (warm-fdefn-name cold-name)))
1334 (or (gethash warm-name *cold-fdefn-objects*)
1335 (let ((fdefn (allocate-boxed-object (or *cold-fdefn-gspace* *dynamic*)
1336 (1- sb!vm:fdefn-size)
1337 sb!vm:other-pointer-type)))
1339 (setf (gethash warm-name *cold-fdefn-objects*) fdefn)
1340 (write-memory fdefn (make-other-immediate-descriptor
1341 (1- sb!vm:fdefn-size) sb!vm:fdefn-type))
1342 (write-wordindexed fdefn sb!vm:fdefn-name-slot cold-name)
1343 (unless leave-fn-raw
1344 (write-wordindexed fdefn sb!vm:fdefn-function-slot
1346 (write-wordindexed fdefn
1347 sb!vm:fdefn-raw-addr-slot
1348 (make-random-descriptor
1349 (cold-foreign-symbol-address-as-integer "undefined_tramp"))))
1352 (defun cold-fset (cold-name defn)
1353 (declare (type descriptor cold-name))
1354 (let ((fdefn (cold-fdefinition-object cold-name t))
1355 (type (logand (descriptor-low (read-memory defn)) sb!vm:type-mask)))
1356 (write-wordindexed fdefn sb!vm:fdefn-function-slot defn)
1357 (write-wordindexed fdefn
1358 sb!vm:fdefn-raw-addr-slot
1360 (#.sb!vm:function-header-type
1364 (make-random-descriptor
1365 (+ (logandc2 (descriptor-bits defn)
1367 (ash sb!vm:function-code-offset
1368 sb!vm:word-shift))))
1369 (#.sb!vm:closure-header-type
1370 (make-random-descriptor
1371 (cold-foreign-symbol-address-as-integer "closure_tramp")))))
1374 (defun initialize-static-fns ()
1375 (let ((*cold-fdefn-gspace* *static*))
1376 (dolist (sym sb!vm:*static-functions*)
1377 (let* ((fdefn (cold-fdefinition-object (cold-intern sym)))
1378 (offset (- (+ (- (descriptor-low fdefn)
1379 sb!vm:other-pointer-type)
1380 (* sb!vm:fdefn-raw-addr-slot sb!vm:word-bytes))
1381 (descriptor-low *nil-descriptor*)))
1382 (desired (sb!vm:static-function-offset sym)))
1383 (unless (= offset desired)
1384 ;; FIXME: should be fatal
1385 (warn "Offset from FDEFN ~S to ~S is ~D, not ~D."
1386 sym nil offset desired))))))
1388 (defun list-all-fdefn-objects ()
1389 (let ((result *nil-descriptor*))
1390 (maphash #'(lambda (key value)
1391 (declare (ignore key))
1392 (cold-push value result))
1393 *cold-fdefn-objects*)
1396 ;;;; fixups and related stuff
1398 ;;; an EQUAL hash table
1399 (defvar *cold-foreign-symbol-table*)
1400 (declaim (type hash-table *cold-foreign-symbol-table*))
1402 ;;; Read the sbcl.nm file to find the addresses for foreign-symbols in
1404 (defun load-cold-foreign-symbol-table (filename)
1405 (with-open-file (file filename)
1407 (let ((line (read-line file nil nil)))
1410 ;; UNIX symbol tables might have tabs in them, and tabs are
1411 ;; not in Common Lisp STANDARD-CHAR, so there seems to be no
1412 ;; nice portable way to deal with them within Lisp, alas.
1413 ;; Fortunately, it's easy to use UNIX command line tools like
1414 ;; sed to remove the problem, so it's not too painful for us
1415 ;; to push responsibility for converting tabs to spaces out to
1418 ;; Other non-STANDARD-CHARs are problematic for the same reason.
1419 ;; Make sure that there aren't any..
1420 (let ((ch (find-if (lambda (char)
1421 (not (typep char 'standard-char)))
1424 (error "non-STANDARD-CHAR ~S found in foreign symbol table:~%~S"
1427 (setf line (string-trim '(#\space) line))
1428 (let ((p1 (position #\space line :from-end nil))
1429 (p2 (position #\space line :from-end t)))
1430 (if (not (and p1 p2 (< p1 p2)))
1431 ;; KLUDGE: It's too messy to try to understand all
1432 ;; possible output from nm, so we just punt the lines we
1433 ;; don't recognize. We realize that there's some chance
1434 ;; that might get us in trouble someday, so we warn
1436 (warn "ignoring unrecognized line ~S in ~A" line filename)
1437 (multiple-value-bind (value name)
1438 (if (string= "0x" line :end2 2)
1439 (values (parse-integer line :start 2 :end p1 :radix 16)
1440 (subseq line (1+ p2)))
1441 (values (parse-integer line :end p1 :radix 16)
1442 (subseq line (1+ p2))))
1443 (multiple-value-bind (old-value found)
1444 (gethash name *cold-foreign-symbol-table*)
1446 (not (= old-value value)))
1447 (warn "redefining ~S from #X~X to #X~X"
1448 name old-value value)))
1449 (setf (gethash name *cold-foreign-symbol-table*) value))))))
1452 (defun cold-foreign-symbol-address-as-integer (name)
1453 (or (find-foreign-symbol-in-table name *cold-foreign-symbol-table*)
1454 *foreign-symbol-placeholder-value*
1456 (format *error-output* "~&The foreign symbol table is:~%")
1457 (maphash (lambda (k v)
1458 (format *error-output* "~&~S = #X~8X~%" k v))
1459 *cold-foreign-symbol-table*)
1460 (error "The foreign symbol ~S is undefined." name))))
1462 (defvar *cold-assembler-routines*)
1464 (defvar *cold-assembler-fixups*)
1466 (defun record-cold-assembler-routine (name address)
1467 (/xhow "in RECORD-COLD-ASSEMBLER-ROUTINE" name address)
1468 (push (cons name address)
1469 *cold-assembler-routines*))
1471 (defun record-cold-assembler-fixup (routine
1476 (push (list routine code-object offset kind)
1477 *cold-assembler-fixups*))
1479 (defun lookup-assembler-reference (symbol)
1480 (let ((value (cdr (assoc symbol *cold-assembler-routines*))))
1481 ;; FIXME: Should this be ERROR instead of WARN?
1483 (warn "Assembler routine ~S not defined." symbol))
1486 ;;; The x86 port needs to store code fixups along with code objects if
1487 ;;; they are to be moved, so fixups for code objects in the dynamic
1488 ;;; heap need to be noted.
1490 (defvar *load-time-code-fixups*)
1493 (defun note-load-time-code-fixup (code-object offset value kind)
1494 ;; If CODE-OBJECT might be moved
1495 (when (= (gspace-identifier (descriptor-intuit-gspace code-object))
1497 ;; FIXME: pushed thing should be a structure, not just a list
1498 (push (list code-object offset value kind) *load-time-code-fixups*))
1502 (defun output-load-time-code-fixups ()
1503 (dolist (fixups *load-time-code-fixups*)
1504 (let ((code-object (first fixups))
1505 (offset (second fixups))
1506 (value (third fixups))
1507 (kind (fourth fixups)))
1508 (cold-push (cold-cons
1509 (cold-intern :load-time-code-fixup)
1513 (number-to-core offset)
1515 (number-to-core value)
1518 *nil-descriptor*)))))
1519 *current-reversed-cold-toplevels*))))
1521 ;;; Given a pointer to a code object and an offset relative to the
1522 ;;; tail of the code object's header, return an offset relative to the
1523 ;;; (beginning of the) code object.
1525 ;;; FIXME: It might be clearer to reexpress
1526 ;;; (LET ((X (CALC-OFFSET CODE-OBJECT OFFSET0))) ..)
1528 ;;; (LET ((X (+ OFFSET0 (CODE-OBJECT-HEADER-N-BYTES CODE-OBJECT)))) ..).
1529 (declaim (ftype (function (descriptor sb!vm:word)) calc-offset))
1530 (defun calc-offset (code-object offset-from-tail-of-header)
1531 (let* ((header (read-memory code-object))
1532 (header-n-words (ash (descriptor-bits header) (- sb!vm:type-bits)))
1533 (header-n-bytes (ash header-n-words sb!vm:word-shift))
1534 (result (+ offset-from-tail-of-header header-n-bytes)))
1537 (declaim (ftype (function (descriptor sb!vm:word sb!vm:word keyword))
1539 (defun do-cold-fixup (code-object after-header value kind)
1540 (let* ((offset-within-code-object (calc-offset code-object after-header))
1541 (gspace-bytes (descriptor-bytes code-object))
1542 (gspace-byte-offset (+ (descriptor-byte-offset code-object)
1543 offset-within-code-object))
1544 (gspace-byte-address (gspace-byte-address
1545 (descriptor-gspace code-object))))
1546 (ecase +backend-fasl-file-implementation+
1547 ;; See CMU CL source for other formerly-supported architectures
1548 ;; (and note that you have to rewrite them to use VECTOR-REF
1549 ;; unstead of SAP-REF).
1553 (assert (zerop (ldb (byte 2 0) value)))
1554 #+nil ;; was commented out in cmucl source too. Don't know what
1555 ;; it does -dan 2001.05.03
1556 (setf (sap-ref-16 sap 0)
1557 (logior (sap-ref-16 sap 0) (ldb (byte 14 0) (ash value -2)))))
1559 (let* ((value (if (logbitp 15 value) (+ value (ash 1 16)) value))
1560 (value (if (logbitp 31 value) (+ value (ash 1 32)) value))
1561 (value (if (logbitp 47 value) (+ value (ash 1 48)) value)))
1562 (setf (byte-vector-ref-8 gspace-bytes gspace-byte-offset)
1563 (ldb (byte 8 48) value)
1564 (byte-vector-ref-8 gspace-bytes (1+ gspace-byte-offset))
1565 (ldb (byte 8 56) value))))
1567 (let* ((value (if (logbitp 15 value) (+ value (ash 1 16)) value))
1568 (value (if (logbitp 31 value) (+ value (ash 1 32)) value)))
1569 (setf (byte-vector-ref-8 gspace-bytes gspace-byte-offset)
1570 (ldb (byte 8 32) value)
1571 (byte-vector-ref-8 gspace-bytes (1+ gspace-byte-offset))
1572 (ldb (byte 8 40) value))))
1574 (let ((value (if (logbitp 15 value) (+ value (ash 1 16)) value)))
1575 (setf (byte-vector-ref-8 gspace-bytes gspace-byte-offset)
1576 (ldb (byte 8 16) value)
1577 (byte-vector-ref-8 gspace-bytes (1+ gspace-byte-offset))
1578 (ldb (byte 8 24) value))))
1580 (setf (byte-vector-ref-8 gspace-bytes gspace-byte-offset)
1581 (ldb (byte 8 0) value)
1582 (byte-vector-ref-8 gspace-bytes (1+ gspace-byte-offset))
1583 (ldb (byte 8 8) value)))))
1585 (let* ((un-fixed-up (byte-vector-ref-32 gspace-bytes
1586 gspace-byte-offset))
1587 (code-object-start-addr (logandc2 (descriptor-bits code-object)
1588 sb!vm:lowtag-mask)))
1589 (assert (= code-object-start-addr
1590 (+ gspace-byte-address
1591 (descriptor-byte-offset code-object))))
1594 (let ((fixed-up (+ value un-fixed-up)))
1595 (setf (byte-vector-ref-32 gspace-bytes gspace-byte-offset)
1597 ;; comment from CMU CL sources:
1599 ;; Note absolute fixups that point within the object.
1600 ;; KLUDGE: There seems to be an implicit assumption in
1601 ;; the old CMU CL code here, that if it doesn't point
1602 ;; before the object, it must point within the object
1603 ;; (not beyond it). It would be good to add an
1604 ;; explanation of why that's true, or an assertion that
1605 ;; it's really true, or both.
1606 (unless (< fixed-up code-object-start-addr)
1607 (note-load-time-code-fixup code-object
1611 (:relative ; (used for arguments to X86 relative CALL instruction)
1612 (let ((fixed-up (- (+ value un-fixed-up)
1615 sb!vm:word-bytes))) ; length of CALL argument
1616 (setf (byte-vector-ref-32 gspace-bytes gspace-byte-offset)
1618 ;; Note relative fixups that point outside the code
1619 ;; object, which is to say all relative fixups, since
1620 ;; relative addressing within a code object never needs
1622 (note-load-time-code-fixup code-object
1628 (defun resolve-assembler-fixups ()
1629 (dolist (fixup *cold-assembler-fixups*)
1630 (let* ((routine (car fixup))
1631 (value (lookup-assembler-reference routine)))
1633 (do-cold-fixup (second fixup) (third fixup) value (fourth fixup))))))
1635 ;;; *COLD-FOREIGN-SYMBOL-TABLE* becomes *!INITIAL-FOREIGN-SYMBOLS* in
1636 ;;; the core. When the core is loaded, !LOADER-COLD-INIT uses this to
1637 ;;; create *STATIC-FOREIGN-SYMBOLS*, which the code in
1638 ;;; target-load.lisp refers to.
1639 (defun linkage-info-to-core ()
1640 (let ((result *nil-descriptor*))
1641 (maphash (lambda (symbol value)
1642 (cold-push (cold-cons (string-to-core symbol)
1643 (number-to-core value))
1645 *cold-foreign-symbol-table*)
1646 (cold-set (cold-intern '*!initial-foreign-symbols*) result))
1647 (let ((result *nil-descriptor*))
1648 (dolist (rtn *cold-assembler-routines*)
1649 (cold-push (cold-cons (cold-intern (car rtn))
1650 (number-to-core (cdr rtn)))
1652 (cold-set (cold-intern '*!initial-assembler-routines*) result)))
1654 ;;;; general machinery for cold-loading FASL files
1656 ;;; FOP functions for cold loading
1657 (defvar *cold-fop-functions*
1658 ;; We start out with a copy of the ordinary *FOP-FUNCTIONS*. The
1659 ;; ones which aren't appropriate for cold load will be destructively
1661 (copy-seq *fop-functions*))
1663 (defvar *normal-fop-functions*)
1665 ;;; Cause a fop to have a special definition for cold load.
1667 ;;; This is similar to DEFINE-FOP, but unlike DEFINE-FOP, this version
1668 ;;; (1) looks up the code for this name (created by a previous
1669 ;; DEFINE-FOP) instead of creating a code, and
1670 ;;; (2) stores its definition in the *COLD-FOP-FUNCTIONS* vector,
1671 ;;; instead of storing in the *FOP-FUNCTIONS* vector.
1672 (defmacro define-cold-fop ((name &optional (pushp t)) &rest forms)
1673 (aver (member pushp '(nil t :nope)))
1674 (let ((code (get name 'fop-code))
1675 (fname (symbolicate "COLD-" name)))
1677 (error "~S is not a defined FOP." name))
1680 ,@(if (eq pushp :nope)
1682 `((with-fop-stack ,pushp ,@forms))))
1683 (setf (svref *cold-fop-functions* ,code) #',fname))))
1685 (defmacro clone-cold-fop ((name &optional (pushp t)) (small-name) &rest forms)
1686 (aver (member pushp '(nil t :nope)))
1688 (macrolet ((clone-arg () '(read-arg 4)))
1689 (define-cold-fop (,name ,pushp) ,@forms))
1690 (macrolet ((clone-arg () '(read-arg 1)))
1691 (define-cold-fop (,small-name ,pushp) ,@forms))))
1693 ;;; Cause a fop to be undefined in cold load.
1694 (defmacro not-cold-fop (name)
1695 `(define-cold-fop (,name)
1696 (error "The fop ~S is not supported in cold load." ',name)))
1698 ;;; COLD-LOAD loads stuff into the core image being built by calling
1699 ;;; LOAD-AS-FASL with the fop function table rebound to a table of cold
1700 ;;; loading functions.
1701 (defun cold-load (filename)
1703 "Load the file named by FILENAME into the cold load image being built."
1704 (let* ((*normal-fop-functions* *fop-functions*)
1705 (*fop-functions* *cold-fop-functions*)
1706 (*cold-load-filename* (etypecase filename
1708 (pathname (namestring filename)))))
1709 (with-open-file (s filename :element-type '(unsigned-byte 8))
1710 (load-as-fasl s nil nil))))
1712 ;;;; miscellaneous cold fops
1714 (define-cold-fop (fop-misc-trap) *unbound-marker*)
1716 (define-cold-fop (fop-character)
1717 (make-character-descriptor (read-arg 3)))
1718 (define-cold-fop (fop-short-character)
1719 (make-character-descriptor (read-arg 1)))
1721 (define-cold-fop (fop-empty-list) *nil-descriptor*)
1722 (define-cold-fop (fop-truth) (cold-intern t))
1724 (define-cold-fop (fop-normal-load :nope)
1725 (setq *fop-functions* *normal-fop-functions*))
1727 (define-fop (fop-maybe-cold-load 82 :nope)
1728 (when *cold-load-filename*
1729 (setq *fop-functions* *cold-fop-functions*)))
1731 (define-cold-fop (fop-maybe-cold-load :nope))
1733 (clone-cold-fop (fop-struct)
1735 (let* ((size (clone-arg))
1736 (result (allocate-boxed-object *dynamic*
1738 sb!vm:instance-pointer-type)))
1739 (write-memory result (make-other-immediate-descriptor
1741 sb!vm:instance-header-type))
1742 (do ((index (1- size) (1- index)))
1744 (declare (fixnum index))
1745 (write-wordindexed result
1746 (+ index sb!vm:instance-slots-offset)
1750 (define-cold-fop (fop-layout)
1751 (let* ((length-des (pop-stack))
1752 (depthoid-des (pop-stack))
1753 (cold-inherits (pop-stack))
1755 (old (gethash name *cold-layouts*)))
1756 (declare (type descriptor length-des depthoid-des cold-inherits))
1757 (declare (type symbol name))
1758 ;; If a layout of this name has been defined already
1760 ;; Enforce consistency between the previous definition and the
1761 ;; current definition, then return the previous definition.
1763 ;; FIXME: This would be more maintainable if we used
1764 ;; DEFSTRUCT (:TYPE LIST) to define COLD-LAYOUT. -- WHN 19990825
1765 (old-layout-descriptor
1771 (declare (type descriptor old-layout-descriptor))
1772 (declare (type index old-length))
1773 (declare (type fixnum old-depthoid))
1774 (declare (type list old-inherits-list))
1775 (aver (eq name old-name))
1776 (let ((length (descriptor-fixnum length-des))
1777 (inherits-list (listify-cold-inherits cold-inherits))
1778 (depthoid (descriptor-fixnum depthoid-des)))
1779 (unless (= length old-length)
1780 (error "cold loading a reference to class ~S when the compile~%~
1781 time length was ~S and current length is ~S"
1785 (unless (equal inherits-list old-inherits-list)
1786 (error "cold loading a reference to class ~S when the compile~%~
1787 time inherits were ~S~%~
1788 and current inherits are ~S"
1792 (unless (= depthoid old-depthoid)
1793 (error "cold loading a reference to class ~S when the compile~%~
1794 time inheritance depthoid was ~S and current inheritance~%~
1799 old-layout-descriptor)
1800 ;; Make a new definition from scratch.
1801 (make-cold-layout name length-des cold-inherits depthoid-des))))
1803 ;;;; cold fops for loading symbols
1805 ;;; Load a symbol SIZE characters long from *FASL-INPUT-STREAM* and intern
1806 ;;; that symbol in PACKAGE.
1807 (defun cold-load-symbol (size package)
1808 (let ((string (make-string size)))
1809 (read-string-as-bytes *fasl-input-stream* string)
1810 (cold-intern (intern string package) package)))
1812 (macrolet ((frob (name pname-len package-len)
1813 `(define-cold-fop (,name)
1814 (let ((index (read-arg ,package-len)))
1816 (cold-load-symbol (read-arg ,pname-len)
1817 (svref *current-fop-table* index)))))))
1818 (frob fop-symbol-in-package-save 4 4)
1819 (frob fop-small-symbol-in-package-save 1 4)
1820 (frob fop-symbol-in-byte-package-save 4 1)
1821 (frob fop-small-symbol-in-byte-package-save 1 1))
1823 (clone-cold-fop (fop-lisp-symbol-save)
1824 (fop-lisp-small-symbol-save)
1825 (push-fop-table (cold-load-symbol (clone-arg) *cl-package*)))
1827 (clone-cold-fop (fop-keyword-symbol-save)
1828 (fop-keyword-small-symbol-save)
1829 (push-fop-table (cold-load-symbol (clone-arg) *keyword-package*)))
1831 (clone-cold-fop (fop-uninterned-symbol-save)
1832 (fop-uninterned-small-symbol-save)
1833 (let* ((size (clone-arg))
1834 (name (make-string size)))
1835 (read-string-as-bytes *fasl-input-stream* name)
1836 (let ((symbol (allocate-symbol name)))
1837 (push-fop-table symbol))))
1839 ;;;; cold fops for loading lists
1841 ;;; Make a list of the top LENGTH things on the fop stack. The last
1842 ;;; cdr of the list is set to LAST.
1843 (defmacro cold-stack-list (length last)
1844 `(do* ((index ,length (1- index))
1845 (result ,last (cold-cons (pop-stack) result)))
1846 ((= index 0) result)
1847 (declare (fixnum index))))
1849 (define-cold-fop (fop-list)
1850 (cold-stack-list (read-arg 1) *nil-descriptor*))
1851 (define-cold-fop (fop-list*)
1852 (cold-stack-list (read-arg 1) (pop-stack)))
1853 (define-cold-fop (fop-list-1)
1854 (cold-stack-list 1 *nil-descriptor*))
1855 (define-cold-fop (fop-list-2)
1856 (cold-stack-list 2 *nil-descriptor*))
1857 (define-cold-fop (fop-list-3)
1858 (cold-stack-list 3 *nil-descriptor*))
1859 (define-cold-fop (fop-list-4)
1860 (cold-stack-list 4 *nil-descriptor*))
1861 (define-cold-fop (fop-list-5)
1862 (cold-stack-list 5 *nil-descriptor*))
1863 (define-cold-fop (fop-list-6)
1864 (cold-stack-list 6 *nil-descriptor*))
1865 (define-cold-fop (fop-list-7)
1866 (cold-stack-list 7 *nil-descriptor*))
1867 (define-cold-fop (fop-list-8)
1868 (cold-stack-list 8 *nil-descriptor*))
1869 (define-cold-fop (fop-list*-1)
1870 (cold-stack-list 1 (pop-stack)))
1871 (define-cold-fop (fop-list*-2)
1872 (cold-stack-list 2 (pop-stack)))
1873 (define-cold-fop (fop-list*-3)
1874 (cold-stack-list 3 (pop-stack)))
1875 (define-cold-fop (fop-list*-4)
1876 (cold-stack-list 4 (pop-stack)))
1877 (define-cold-fop (fop-list*-5)
1878 (cold-stack-list 5 (pop-stack)))
1879 (define-cold-fop (fop-list*-6)
1880 (cold-stack-list 6 (pop-stack)))
1881 (define-cold-fop (fop-list*-7)
1882 (cold-stack-list 7 (pop-stack)))
1883 (define-cold-fop (fop-list*-8)
1884 (cold-stack-list 8 (pop-stack)))
1886 ;;;; cold fops for loading vectors
1888 (clone-cold-fop (fop-string)
1890 (let* ((len (clone-arg))
1891 (string (make-string len)))
1892 (read-string-as-bytes *fasl-input-stream* string)
1893 (string-to-core string)))
1895 (clone-cold-fop (fop-vector)
1897 (let* ((size (clone-arg))
1898 (result (allocate-vector-object *dynamic*
1901 sb!vm:simple-vector-type)))
1902 (do ((index (1- size) (1- index)))
1904 (declare (fixnum index))
1905 (write-wordindexed result
1906 (+ index sb!vm:vector-data-offset)
1910 (define-cold-fop (fop-int-vector)
1911 (let* ((len (read-arg 4))
1912 (sizebits (read-arg 1))
1913 (type (case sizebits
1914 (1 sb!vm:simple-bit-vector-type)
1915 (2 sb!vm:simple-array-unsigned-byte-2-type)
1916 (4 sb!vm:simple-array-unsigned-byte-4-type)
1917 (8 sb!vm:simple-array-unsigned-byte-8-type)
1918 (16 sb!vm:simple-array-unsigned-byte-16-type)
1919 (32 sb!vm:simple-array-unsigned-byte-32-type)
1920 (t (error "losing element size: ~D" sizebits))))
1921 (result (allocate-vector-object *dynamic* sizebits len type))
1922 (start (+ (descriptor-byte-offset result)
1923 (ash sb!vm:vector-data-offset sb!vm:word-shift)))
1925 (ceiling (* len sizebits)
1927 (read-sequence-or-die (descriptor-bytes result)
1933 (define-cold-fop (fop-single-float-vector)
1934 (let* ((len (read-arg 4))
1935 (result (allocate-vector-object *dynamic*
1938 sb!vm:simple-array-single-float-type))
1939 (start (+ (descriptor-byte-offset result)
1940 (ash sb!vm:vector-data-offset sb!vm:word-shift)))
1941 (end (+ start (* len sb!vm:word-bytes))))
1942 (read-sequence-or-die (descriptor-bytes result)
1948 (not-cold-fop fop-double-float-vector)
1949 #!+long-float (not-cold-fop fop-long-float-vector)
1950 (not-cold-fop fop-complex-single-float-vector)
1951 (not-cold-fop fop-complex-double-float-vector)
1952 #!+long-float (not-cold-fop fop-complex-long-float-vector)
1954 (define-cold-fop (fop-array)
1955 (let* ((rank (read-arg 4))
1956 (data-vector (pop-stack))
1957 (result (allocate-boxed-object *dynamic*
1958 (+ sb!vm:array-dimensions-offset rank)
1959 sb!vm:other-pointer-type)))
1960 (write-memory result
1961 (make-other-immediate-descriptor rank
1962 sb!vm:simple-array-type))
1963 (write-wordindexed result sb!vm:array-fill-pointer-slot *nil-descriptor*)
1964 (write-wordindexed result sb!vm:array-data-slot data-vector)
1965 (write-wordindexed result sb!vm:array-displacement-slot *nil-descriptor*)
1966 (write-wordindexed result sb!vm:array-displaced-p-slot *nil-descriptor*)
1967 (let ((total-elements 1))
1968 (dotimes (axis rank)
1969 (let ((dim (pop-stack)))
1970 (unless (or (= (descriptor-lowtag dim) sb!vm:even-fixnum-type)
1971 (= (descriptor-lowtag dim) sb!vm:odd-fixnum-type))
1972 (error "non-fixnum dimension? (~S)" dim))
1973 (setf total-elements
1975 (logior (ash (descriptor-high dim)
1976 (- descriptor-low-bits (1- sb!vm:lowtag-bits)))
1977 (ash (descriptor-low dim)
1978 (- 1 sb!vm:lowtag-bits)))))
1979 (write-wordindexed result
1980 (+ sb!vm:array-dimensions-offset axis)
1982 (write-wordindexed result
1983 sb!vm:array-elements-slot
1984 (make-fixnum-descriptor total-elements)))
1987 ;;;; cold fops for loading numbers
1989 (defmacro define-cold-number-fop (fop)
1990 `(define-cold-fop (,fop :nope)
1991 ;; Invoke the ordinary warm version of this fop to push the
1994 ;; Replace the warm fop result with the cold image of the warm
1997 (let ((number (pop-stack)))
1998 (number-to-core number)))))
2000 (define-cold-number-fop fop-single-float)
2001 (define-cold-number-fop fop-double-float)
2002 (define-cold-number-fop fop-integer)
2003 (define-cold-number-fop fop-small-integer)
2004 (define-cold-number-fop fop-word-integer)
2005 (define-cold-number-fop fop-byte-integer)
2006 (define-cold-number-fop fop-complex-single-float)
2007 (define-cold-number-fop fop-complex-double-float)
2010 (define-cold-fop (fop-long-float)
2011 (ecase +backend-fasl-file-implementation+
2012 (:x86 ; (which has 80-bit long-float format)
2013 (prepare-for-fast-read-byte *fasl-input-stream*
2014 (let* ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits
2015 (1- sb!vm:long-float-size)
2016 sb!vm:long-float-type))
2017 (low-bits (make-random-descriptor (fast-read-u-integer 4)))
2018 (high-bits (make-random-descriptor (fast-read-u-integer 4)))
2019 (exp-bits (make-random-descriptor (fast-read-s-integer 2))))
2020 (done-with-fast-read-byte)
2021 (write-wordindexed des sb!vm:long-float-value-slot low-bits)
2022 (write-wordindexed des (1+ sb!vm:long-float-value-slot) high-bits)
2023 (write-wordindexed des (+ 2 sb!vm:long-float-value-slot) exp-bits)
2025 ;; This was supported in CMU CL, but isn't currently supported in
2028 (#.sb!c:sparc-fasl-file-implementation ; 128 bit long-float format
2029 (prepare-for-fast-read-byte *fasl-input-stream*
2030 (let* ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits
2031 (1- sb!vm:long-float-size)
2032 sb!vm:long-float-type))
2033 (low-bits (make-random-descriptor (fast-read-u-integer 4)))
2034 (mid-bits (make-random-descriptor (fast-read-u-integer 4)))
2035 (high-bits (make-random-descriptor (fast-read-u-integer 4)))
2036 (exp-bits (make-random-descriptor (fast-read-s-integer 4))))
2037 (done-with-fast-read-byte)
2038 (write-wordindexed des sb!vm:long-float-value-slot exp-bits)
2039 (write-wordindexed des (1+ sb!vm:long-float-value-slot) high-bits)
2040 (write-wordindexed des (+ 2 sb!vm:long-float-value-slot) mid-bits)
2041 (write-wordindexed des (+ 3 sb!vm:long-float-value-slot) low-bits)
2045 (define-cold-fop (fop-complex-long-float)
2046 (ecase +backend-fasl-file-implementation+
2047 (:x86 ; (which has 80-bit long-float format)
2048 (prepare-for-fast-read-byte *fasl-input-stream*
2049 (let* ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits
2050 (1- sb!vm:complex-long-float-size)
2051 sb!vm:complex-long-float-type))
2052 (real-low-bits (make-random-descriptor (fast-read-u-integer 4)))
2053 (real-high-bits (make-random-descriptor (fast-read-u-integer 4)))
2054 (real-exp-bits (make-random-descriptor (fast-read-s-integer 2)))
2055 (imag-low-bits (make-random-descriptor (fast-read-u-integer 4)))
2056 (imag-high-bits (make-random-descriptor (fast-read-u-integer 4)))
2057 (imag-exp-bits (make-random-descriptor (fast-read-s-integer 2))))
2058 (done-with-fast-read-byte)
2059 (write-wordindexed des
2060 sb!vm:complex-long-float-real-slot
2062 (write-wordindexed des
2063 (1+ sb!vm:complex-long-float-real-slot)
2065 (write-wordindexed des
2066 (+ 2 sb!vm:complex-long-float-real-slot)
2068 (write-wordindexed des
2069 sb!vm:complex-long-float-imag-slot
2071 (write-wordindexed des
2072 (1+ sb!vm:complex-long-float-imag-slot)
2074 (write-wordindexed des
2075 (+ 2 sb!vm:complex-long-float-imag-slot)
2078 ;; This was supported in CMU CL, but isn't currently supported in SBCL.
2080 (#.sb!c:sparc-fasl-file-implementation ; 128 bit long-float format
2081 (prepare-for-fast-read-byte *fasl-input-stream*
2082 (let* ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits
2083 (1- sb!vm:complex-long-float-size)
2084 sb!vm:complex-long-float-type))
2085 (real-low-bits (make-random-descriptor (fast-read-u-integer 4)))
2086 (real-mid-bits (make-random-descriptor (fast-read-u-integer 4)))
2087 (real-high-bits (make-random-descriptor (fast-read-u-integer 4)))
2088 (real-exp-bits (make-random-descriptor (fast-read-s-integer 4)))
2089 (imag-low-bits (make-random-descriptor (fast-read-u-integer 4)))
2090 (imag-mid-bits (make-random-descriptor (fast-read-u-integer 4)))
2091 (imag-high-bits (make-random-descriptor (fast-read-u-integer 4)))
2092 (imag-exp-bits (make-random-descriptor (fast-read-s-integer 4))))
2093 (done-with-fast-read-byte)
2094 (write-wordindexed des
2095 sb!vm:complex-long-float-real-slot
2097 (write-wordindexed des
2098 (1+ sb!vm:complex-long-float-real-slot)
2100 (write-wordindexed des
2101 (+ 2 sb!vm:complex-long-float-real-slot)
2103 (write-wordindexed des
2104 (+ 3 sb!vm:complex-long-float-real-slot)
2106 (write-wordindexed des
2107 sb!vm:complex-long-float-real-slot
2109 (write-wordindexed des
2110 (1+ sb!vm:complex-long-float-real-slot)
2112 (write-wordindexed des
2113 (+ 2 sb!vm:complex-long-float-real-slot)
2115 (write-wordindexed des
2116 (+ 3 sb!vm:complex-long-float-real-slot)
2120 (define-cold-fop (fop-ratio)
2121 (let ((den (pop-stack)))
2122 (number-pair-to-core (pop-stack) den sb!vm:ratio-type)))
2124 (define-cold-fop (fop-complex)
2125 (let ((im (pop-stack)))
2126 (number-pair-to-core (pop-stack) im sb!vm:complex-type)))
2128 ;;;; cold fops for calling (or not calling)
2130 (not-cold-fop fop-eval)
2131 (not-cold-fop fop-eval-for-effect)
2133 (defvar *load-time-value-counter*)
2135 (define-cold-fop (fop-funcall)
2136 (unless (= (read-arg 1) 0)
2137 (error "You can't FOP-FUNCALL arbitrary stuff in cold load."))
2138 (let ((counter *load-time-value-counter*))
2139 (cold-push (cold-cons
2140 (cold-intern :load-time-value)
2144 (number-to-core counter)
2146 *current-reversed-cold-toplevels*)
2147 (setf *load-time-value-counter* (1+ counter))
2148 (make-descriptor 0 0 nil counter)))
2150 (defun finalize-load-time-value-noise ()
2151 (cold-set (cold-intern '*!load-time-values*)
2152 (allocate-vector-object *dynamic*
2154 *load-time-value-counter*
2155 sb!vm:simple-vector-type)))
2157 (define-cold-fop (fop-funcall-for-effect nil)
2158 (if (= (read-arg 1) 0)
2159 (cold-push (pop-stack)
2160 *current-reversed-cold-toplevels*)
2161 (error "You can't FOP-FUNCALL arbitrary stuff in cold load.")))
2163 ;;;; cold fops for fixing up circularities
2165 (define-cold-fop (fop-rplaca nil)
2166 (let ((obj (svref *current-fop-table* (read-arg 4)))
2168 (write-memory (cold-nthcdr idx obj) (pop-stack))))
2170 (define-cold-fop (fop-rplacd nil)
2171 (let ((obj (svref *current-fop-table* (read-arg 4)))
2173 (write-wordindexed (cold-nthcdr idx obj) 1 (pop-stack))))
2175 (define-cold-fop (fop-svset nil)
2176 (let ((obj (svref *current-fop-table* (read-arg 4)))
2178 (write-wordindexed obj
2180 (ecase (descriptor-lowtag obj)
2181 (#.sb!vm:instance-pointer-type 1)
2182 (#.sb!vm:other-pointer-type 2)))
2185 (define-cold-fop (fop-structset nil)
2186 (let ((obj (svref *current-fop-table* (read-arg 4)))
2188 (write-wordindexed obj (1+ idx) (pop-stack))))
2190 (define-cold-fop (fop-nthcdr t)
2191 (cold-nthcdr (read-arg 4) (pop-stack)))
2193 (defun cold-nthcdr (index obj)
2195 (setq obj (read-wordindexed obj 1)))
2198 ;;;; cold fops for loading code objects and functions
2200 (define-cold-fop (fop-fset nil)
2201 (let ((fn (pop-stack))
2203 (cold-fset name fn)))
2205 (define-cold-fop (fop-fdefinition)
2206 (cold-fdefinition-object (pop-stack)))
2208 (define-cold-fop (fop-sanctify-for-execution)
2211 (not-cold-fop fop-make-byte-compiled-function)
2213 ;;; Setting this variable shows what code looks like before any
2214 ;;; fixups (or function headers) are applied.
2215 #!+sb-show (defvar *show-pre-fixup-code-p* nil)
2217 ;;; FIXME: The logic here should be converted into a function
2218 ;;; COLD-CODE-FOP-GUTS (NCONST CODE-SIZE) called by DEFINE-COLD-FOP
2219 ;;; FOP-CODE and DEFINE-COLD-FOP FOP-SMALL-CODE, so that
2220 ;;; variable-capture nastiness like (LET ((NCONST ,NCONST) ..) ..)
2221 ;;; doesn't keep me awake at night.
2222 (defmacro define-cold-code-fop (name nconst code-size)
2223 `(define-cold-fop (,name)
2224 (let* ((nconst ,nconst)
2225 (code-size ,code-size)
2226 (raw-header-n-words (+ sb!vm:code-trace-table-offset-slot nconst))
2228 ;; Note: we round the number of constants up to ensure
2229 ;; that the code vector will be properly aligned.
2230 (round-up raw-header-n-words 2))
2231 (des (allocate-descriptor
2232 ;; In the X86 with CGC, code can't be relocated, so
2233 ;; we have to put it into static space. In all other
2234 ;; configurations, code can go into dynamic space.
2235 #!+(and x86 cgc) *static* ; KLUDGE: Why? -- WHN 19990907
2236 #!-(and x86 cgc) *dynamic*
2237 (+ (ash header-n-words sb!vm:word-shift) code-size)
2238 sb!vm:other-pointer-type)))
2240 (make-other-immediate-descriptor header-n-words
2241 sb!vm:code-header-type))
2242 (write-wordindexed des
2243 sb!vm:code-code-size-slot
2244 (make-fixnum-descriptor
2245 (ash (+ code-size (1- (ash 1 sb!vm:word-shift)))
2246 (- sb!vm:word-shift))))
2247 (write-wordindexed des sb!vm:code-entry-points-slot *nil-descriptor*)
2248 (write-wordindexed des sb!vm:code-debug-info-slot (pop-stack))
2249 (when (oddp raw-header-n-words)
2250 (write-wordindexed des
2252 (make-random-descriptor 0)))
2253 (do ((index (1- raw-header-n-words) (1- index)))
2254 ((< index sb!vm:code-trace-table-offset-slot))
2255 (write-wordindexed des index (pop-stack)))
2256 (let* ((start (+ (descriptor-byte-offset des)
2257 (ash header-n-words sb!vm:word-shift)))
2258 (end (+ start code-size)))
2259 (read-sequence-or-die (descriptor-bytes des)
2264 (when *show-pre-fixup-code-p*
2265 (format *trace-output*
2266 "~&/raw code from code-fop ~D ~D:~%"
2269 (do ((i start (+ i sb!vm:word-bytes)))
2271 (format *trace-output*
2272 "/#X~8,'0x: #X~8,'0x~%"
2273 (+ i (gspace-byte-address (descriptor-gspace des)))
2274 (byte-vector-ref-32 (descriptor-bytes des) i)))))
2277 (define-cold-code-fop fop-code (read-arg 4) (read-arg 4))
2279 (define-cold-code-fop fop-small-code (read-arg 1) (read-arg 2))
2281 (clone-cold-fop (fop-alter-code nil)
2282 (fop-byte-alter-code)
2283 (let ((slot (clone-arg))
2286 (write-wordindexed code slot value)))
2288 (define-cold-fop (fop-function-entry)
2289 (let* ((type (pop-stack))
2290 (arglist (pop-stack))
2292 (code-object (pop-stack))
2293 (offset (calc-offset code-object (read-arg 4)))
2294 (fn (descriptor-beyond code-object
2296 sb!vm:function-pointer-type))
2297 (next (read-wordindexed code-object sb!vm:code-entry-points-slot)))
2298 (unless (zerop (logand offset sb!vm:lowtag-mask))
2299 ;; FIXME: This should probably become a fatal error.
2300 (warn "unaligned function entry: ~S at #X~X" name offset))
2301 (write-wordindexed code-object sb!vm:code-entry-points-slot fn)
2303 (make-other-immediate-descriptor (ash offset
2304 (- sb!vm:word-shift))
2305 sb!vm:function-header-type))
2306 (write-wordindexed fn
2307 sb!vm:function-self-slot
2308 ;; KLUDGE: Wiring decisions like this in at
2309 ;; this level ("if it's an x86") instead of a
2310 ;; higher level of abstraction ("if it has such
2311 ;; and such relocation peculiarities (which
2312 ;; happen to be confined to the x86)") is bad.
2313 ;; It would be nice if the code were instead
2314 ;; conditional on some more descriptive
2315 ;; feature, :STICKY-CODE or
2316 ;; :LOAD-GC-INTERACTION or something.
2318 ;; FIXME: The X86 definition of the function
2319 ;; self slot breaks everything object.tex says
2320 ;; about it. (As far as I can tell, the X86
2321 ;; definition makes it a pointer to the actual
2322 ;; code instead of a pointer back to the object
2323 ;; itself.) Ask on the mailing list whether
2324 ;; this is documented somewhere, and if not,
2325 ;; try to reverse engineer some documentation
2328 ;; a pointer back to the function object, as
2329 ;; described in CMU CL
2330 ;; src/docs/internals/object.tex
2333 ;; KLUDGE: a pointer to the actual code of the
2334 ;; object, as described nowhere that I can find
2336 (make-random-descriptor
2337 (+ (descriptor-bits fn)
2338 (- (ash sb!vm:function-code-offset sb!vm:word-shift)
2339 ;; FIXME: We should mask out the type
2340 ;; bits, not assume we know what they
2341 ;; are and subtract them out this way.
2342 sb!vm:function-pointer-type))))
2343 (write-wordindexed fn sb!vm:function-next-slot next)
2344 (write-wordindexed fn sb!vm:function-name-slot name)
2345 (write-wordindexed fn sb!vm:function-arglist-slot arglist)
2346 (write-wordindexed fn sb!vm:function-type-slot type)
2349 (define-cold-fop (fop-foreign-fixup)
2350 (let* ((kind (pop-stack))
2351 (code-object (pop-stack))
2353 (sym (make-string len)))
2354 (read-string-as-bytes *fasl-input-stream* sym)
2355 (let ((offset (read-arg 4))
2356 (value (cold-foreign-symbol-address-as-integer sym)))
2357 (do-cold-fixup code-object offset value kind))
2360 (define-cold-fop (fop-assembler-code)
2361 (let* ((length (read-arg 4))
2363 ;; Note: we round the number of constants up to ensure that
2364 ;; the code vector will be properly aligned.
2365 (round-up sb!vm:code-constants-offset 2))
2366 (des (allocate-descriptor *read-only*
2367 (+ (ash header-n-words sb!vm:word-shift)
2369 sb!vm:other-pointer-type)))
2371 (make-other-immediate-descriptor header-n-words
2372 sb!vm:code-header-type))
2373 (write-wordindexed des
2374 sb!vm:code-code-size-slot
2375 (make-fixnum-descriptor
2376 (ash (+ length (1- (ash 1 sb!vm:word-shift)))
2377 (- sb!vm:word-shift))))
2378 (write-wordindexed des sb!vm:code-entry-points-slot *nil-descriptor*)
2379 (write-wordindexed des sb!vm:code-debug-info-slot *nil-descriptor*)
2381 (let* ((start (+ (descriptor-byte-offset des)
2382 (ash header-n-words sb!vm:word-shift)))
2383 (end (+ start length)))
2384 (read-sequence-or-die (descriptor-bytes des)
2390 (define-cold-fop (fop-assembler-routine)
2391 (let* ((routine (pop-stack))
2393 (offset (calc-offset des (read-arg 4))))
2394 (record-cold-assembler-routine
2396 (+ (logandc2 (descriptor-bits des) sb!vm:lowtag-mask) offset))
2399 (define-cold-fop (fop-assembler-fixup)
2400 (let* ((routine (pop-stack))
2402 (code-object (pop-stack))
2403 (offset (read-arg 4)))
2404 (record-cold-assembler-fixup routine code-object offset kind)
2407 (define-cold-fop (fop-code-object-fixup)
2408 (let* ((kind (pop-stack))
2409 (code-object (pop-stack))
2410 (offset (read-arg 4))
2411 (value (descriptor-bits code-object)))
2412 (do-cold-fixup code-object offset value kind)
2415 ;;;; emitting C header file
2417 (defun tail-comp (string tail)
2418 (and (>= (length string) (length tail))
2419 (string= string tail :start1 (- (length string) (length tail)))))
2421 (defun head-comp (string head)
2422 (and (>= (length string) (length head))
2423 (string= string head :end1 (length head))))
2425 (defun write-c-header ()
2427 ;; writing beginning boilerplate
2430 '("This is a machine-generated file. Do not edit it by hand."
2432 "This file contains low-level information about the"
2433 "internals of a particular version and configuration"
2434 "of SBCL. It is used by the C compiler to create a runtime"
2435 "support environment, an executable program in the host"
2436 "operating system's native format, which can then be used to"
2437 "load and run 'core' files, which are basically programs"
2438 "in SBCL's own format."))
2439 (format t " * ~A~%" line))
2442 (format t "#ifndef _SBCL_H_~%#define _SBCL_H_~%")
2445 ;; writing miscellaneous constants
2446 (format t "#define SBCL_CORE_VERSION_INTEGER ~D~%" sbcl-core-version-integer)
2448 "#define SBCL_VERSION_STRING ~S~%"
2449 (sb!xc:lisp-implementation-version))
2450 (format t "#define CORE_MAGIC 0x~X~%" core-magic)
2452 ;; FIXME: Other things from core.h should be defined here too:
2453 ;; #define CORE_END 3840
2454 ;; #define CORE_NDIRECTORY 3861
2455 ;; #define CORE_VALIDATE 3845
2456 ;; #define CORE_VERSION 3860
2457 ;; #define CORE_MACHINE_STATE 3862
2458 ;; (Except that some of them are obsolete and should be deleted instead.)
2460 ;; #define DYNAMIC_SPACE_ID (1)
2461 ;; #define STATIC_SPACE_ID (2)
2462 ;; #define READ_ONLY_SPACE_ID (3)
2464 ;; writing entire families of named constants from SB!VM
2465 (let ((constants nil))
2466 (do-external-symbols (symbol (find-package "SB!VM"))
2467 (when (constantp symbol)
2468 (let ((name (symbol-name symbol)))
2469 (labels (;; shared machinery
2470 (record (string priority)
2473 (symbol-value symbol)
2474 (documentation symbol 'variable))
2476 ;; machinery for old-style CMU CL Lisp-to-C naming
2477 (record-with-munged-name (prefix string priority)
2478 (record (concatenate
2481 (delete #\- (string-capitalize string)))
2483 (test-tail (tail prefix priority)
2484 (when (tail-comp name tail)
2485 (record-with-munged-name prefix
2490 (test-head (head prefix priority)
2491 (when (head-comp name head)
2492 (record-with-munged-name prefix
2493 (subseq name (length head))
2495 ;; machinery for new-style SBCL Lisp-to-C naming
2496 (record-with-translated-name (priority)
2497 (record (substitute #\_ #\- name)
2499 ;; This style of munging of names is used in the code
2500 ;; inherited from CMU CL.
2501 (test-tail "-TYPE" "type_" 0)
2502 (test-tail "-FLAG" "flag_" 1)
2503 (test-tail "-TRAP" "trap_" 2)
2504 (test-tail "-SUBTYPE" "subtype_" 3)
2505 (test-head "TRACE-TABLE-" "tracetab_" 4)
2506 (test-tail "-SC-NUMBER" "sc_" 5)
2507 ;; This simpler style of translation of names seems less
2508 ;; confusing, and is used for newer code.
2509 (when (some (lambda (suffix) (tail-comp name suffix))
2511 (record-with-translated-name 6))))))
2514 #'(lambda (const1 const2)
2515 (if (= (second const1) (second const2))
2516 (< (third const1) (third const2))
2517 (< (second const1) (second const2))))))
2518 (let ((prev-priority (second (car constants))))
2519 (dolist (const constants)
2520 (destructuring-bind (name priority value doc) const
2521 (unless (= prev-priority priority)
2523 (setf prev-priority priority))
2524 (format t "#define ~A " name)
2526 ;; KLUDGE: As of sbcl-0.6.7.14, we're dumping two
2527 ;; different kinds of values here, (1) small codes
2528 ;; and (2) machine addresses. The small codes can be
2529 ;; dumped as bare integer values. The large machine
2530 ;; addresses might cause problems if they're large
2531 ;; and represented as (signed) C integers, so we
2532 ;; want to force them to be unsigned. We do that by
2533 ;; wrapping them in the LISPOBJ macro. (We could do
2534 ;; it with a bare "(unsigned)" cast, except that
2535 ;; this header file is used not only in C files, but
2536 ;; also in assembly files, which don't understand
2537 ;; the cast syntax. The LISPOBJ macro goes away in
2538 ;; assembly files, but that shouldn't matter because
2539 ;; we don't do arithmetic on address constants in
2540 ;; assembly files. See? It really is a kludge..) --
2542 (let (;; cutoff for treatment as a small code
2543 (cutoff (expt 2 16)))
2544 (cond ((minusp value)
2545 (error "stub: negative values unsupported"))
2551 (format t " /* 0x~X */~@[ /* ~A */~]~%" value doc))))
2554 ;; writing codes/strings for internal errors
2555 (format t "#define ERRORS { \\~%")
2556 ;; FIXME: Is this just DO-VECTOR?
2557 (let ((internal-errors sb!c:*backend-internal-errors*))
2558 (dotimes (i (length internal-errors))
2559 (format t " ~S, /*~D*/ \\~%" (cdr (aref internal-errors i)) i)))
2560 (format t " NULL \\~%}~%")
2563 ;; writing primitive object layouts
2564 (let ((structs (sort (copy-list sb!vm:*primitive-objects*) #'string<
2565 :key #'(lambda (obj)
2567 (sb!vm:primitive-object-name obj))))))
2568 (format t "#ifndef LANGUAGE_ASSEMBLY~2%")
2569 (format t "#define LISPOBJ(x) ((lispobj)x)~2%")
2570 (dolist (obj structs)
2573 (nsubstitute #\_ #\-
2574 (string-downcase (string (sb!vm:primitive-object-name obj)))))
2575 (when (sb!vm:primitive-object-header obj)
2576 (format t " lispobj header;~%"))
2577 (dolist (slot (sb!vm:primitive-object-slots obj))
2578 (format t " ~A ~A~@[[1]~];~%"
2579 (getf (sb!vm:slot-options slot) :c-type "lispobj")
2580 (nsubstitute #\_ #\-
2581 (string-downcase (string (sb!vm:slot-name slot))))
2582 (sb!vm:slot-rest-p slot)))
2584 (format t "#else /* LANGUAGE_ASSEMBLY */~2%")
2585 (format t "#define LISPOBJ(thing) thing~2%")
2586 (dolist (obj structs)
2587 (let ((name (sb!vm:primitive-object-name obj))
2588 (lowtag (eval (sb!vm:primitive-object-lowtag obj))))
2590 (dolist (slot (sb!vm:primitive-object-slots obj))
2591 (format t "#define ~A_~A_OFFSET ~D~%"
2592 (substitute #\_ #\- (string name))
2593 (substitute #\_ #\- (string (sb!vm:slot-name slot)))
2594 (- (* (sb!vm:slot-offset slot) sb!vm:word-bytes) lowtag)))
2596 (format t "#endif /* LANGUAGE_ASSEMBLY */~2%"))
2598 ;; writing static symbol offsets
2599 (dolist (symbol (cons nil sb!vm:*static-symbols*))
2600 ;; FIXME: It would be nice to use longer names NIL and (particularly) T
2601 ;; in #define statements.
2602 (format t "#define ~A LISPOBJ(0x~X)~%"
2603 (nsubstitute #\_ #\-
2604 (remove-if #'(lambda (char)
2605 (member char '(#\% #\* #\. #\!)))
2606 (symbol-name symbol)))
2607 (if *static* ; if we ran GENESIS
2608 ;; We actually ran GENESIS, use the real value.
2609 (descriptor-bits (cold-intern symbol))
2610 ;; We didn't run GENESIS, so guess at the address.
2611 (+ sb!vm:static-space-start
2613 sb!vm:other-pointer-type
2614 (if symbol (sb!vm:static-symbol-offset symbol) 0)))))
2617 (format t "~%#endif~%"))
2619 ;;;; writing map file
2621 ;;; Write a map file describing the cold load. Some of this
2622 ;;; information is subject to change due to relocating GC, but even so
2623 ;;; it can be very handy when attempting to troubleshoot the early
2624 ;;; stages of cold load.
2626 (let ((*print-pretty* nil)
2627 (*print-case* :upcase))
2628 (format t "assembler routines defined in core image:~2%")
2629 (dolist (routine (sort (copy-list *cold-assembler-routines*) #'<
2631 (format t "#X~8,'0X: ~S~%" (cdr routine) (car routine)))
2634 (maphash #'(lambda (name fdefn)
2635 (let ((fun (read-wordindexed fdefn
2636 sb!vm:fdefn-function-slot)))
2637 (if (= (descriptor-bits fun)
2638 (descriptor-bits *nil-descriptor*))
2640 (let ((addr (read-wordindexed fdefn
2641 sb!vm:fdefn-raw-addr-slot)))
2642 (push (cons name (descriptor-bits addr))
2644 *cold-fdefn-objects*)
2645 (format t "~%~|~%initially defined functions:~2%")
2646 (dolist (info (sort funs #'< :key #'cdr))
2647 (format t "0x~8,'0X: ~S #X~8,'0X~%" (cdr info) (car info)
2648 (- (cdr info) #x17)))
2651 (a note about initially undefined function references: These functions
2652 are referred to by code which is installed by GENESIS, but they are not
2653 installed by GENESIS. This is not necessarily a problem; functions can
2654 be defined later, by cold init toplevel forms, or in files compiled and
2655 loaded at warm init, or elsewhere. As long as they are defined before
2656 they are called, everything should be OK. Things are also OK if the
2657 cross-compiler knew their inline definition and used that everywhere
2658 that they were called before the out-of-line definition is installed,
2659 as is fairly common for structure accessors.)
2660 initially undefined function references:~2%")
2661 (labels ((key (name)
2663 (symbol (symbol-name name))
2664 ;; FIXME: should use standard SETF-function parsing logic
2665 (list (key (second name))))))
2666 (dolist (name (sort undefs #'string< :key #'key))
2667 (format t "~S" name)
2668 ;; FIXME: This ACCESSOR-FOR stuff should go away when the
2669 ;; code has stabilized. (It's only here to help me
2670 ;; categorize the flood of undefined functions caused by
2671 ;; completely rewriting the bootstrap process. Hopefully any
2672 ;; future maintainers will mostly have small numbers of
2673 ;; undefined functions..)
2674 (let ((accessor-for (info :function :accessor-for name)))
2676 (format t " (accessor for ~S)" accessor-for)))
2679 (format t "~%~|~%layout names:~2%")
2681 (maphash #'(lambda (name gorp)
2682 (declare (ignore name))
2683 (stuff (cons (descriptor-bits (car gorp))
2686 (dolist (x (sort (stuff) #'< :key #'car))
2687 (apply #'format t "~8,'0X: ~S[~D]~%~10T~S~%" x)))
2691 ;;;; writing core file
2693 (defvar *core-file*)
2694 (defvar *data-page*)
2696 ;;; KLUDGE: These numbers correspond to values in core.h. If they're
2697 ;;; documented anywhere, I haven't found it. (I haven't tried very
2698 ;;; hard yet.) -- WHN 19990826
2699 (defparameter version-entry-type-code 3860)
2700 (defparameter validate-entry-type-code 3845)
2701 (defparameter directory-entry-type-code 3841)
2702 (defparameter new-directory-entry-type-code 3861)
2703 (defparameter initial-function-entry-type-code 3863)
2704 (defparameter end-entry-type-code 3840)
2706 (declaim (ftype (function (sb!vm:word) sb!vm:word) write-long))
2707 (defun write-long (num) ; FIXME: WRITE-WORD would be a better name.
2708 (ecase sb!c:*backend-byte-order*
2711 (write-byte (ldb (byte 8 (* i 8)) num) *core-file*)))
2714 (write-byte (ldb (byte 8 (* (- 3 i) 8)) num) *core-file*))))
2717 (defun advance-to-page ()
2718 (force-output *core-file*)
2719 (file-position *core-file*
2720 (round-up (file-position *core-file*)
2721 sb!c:*backend-page-size*)))
2723 (defun output-gspace (gspace)
2724 (force-output *core-file*)
2725 (let* ((posn (file-position *core-file*))
2726 (bytes (* (gspace-free-word-index gspace) sb!vm:word-bytes))
2727 (pages (ceiling bytes sb!c:*backend-page-size*))
2728 (total-bytes (* pages sb!c:*backend-page-size*)))
2730 (file-position *core-file*
2731 (* sb!c:*backend-page-size* (1+ *data-page*)))
2733 "writing ~S byte~:P [~S page~:P] from ~S~%"
2739 ;; Note: It is assumed that the GSPACE allocation routines always
2740 ;; allocate whole pages (of size *target-page-size*) and that any
2741 ;; empty gspace between the free pointer and the end of page will
2742 ;; be zero-filled. This will always be true under Mach on machines
2743 ;; where the page size is equal. (RT is 4K, PMAX is 4K, Sun 3 is
2745 (write-sequence (gspace-bytes gspace) *core-file* :end total-bytes)
2746 (force-output *core-file*)
2747 (file-position *core-file* posn)
2749 ;; Write part of a (new) directory entry which looks like this:
2750 ;; GSPACE IDENTIFIER
2755 (write-long (gspace-identifier gspace))
2756 (write-long (gspace-free-word-index gspace))
2757 (write-long *data-page*)
2758 (multiple-value-bind (floor rem)
2759 (floor (gspace-byte-address gspace) sb!c:*backend-page-size*)
2764 (incf *data-page* pages)))
2766 ;;; Create a core file created from the cold loaded image. (This is
2767 ;;; the "initial core file" because core files could be created later
2768 ;;; by executing SAVE-LISP in a running system, perhaps after we've
2769 ;;; added some functionality to the system.)
2770 (declaim (ftype (function (string)) write-initial-core-file))
2771 (defun write-initial-core-file (filename)
2773 (let ((filenamestring (namestring filename))
2777 "[building initial core file in ~S: ~%"
2781 (with-open-file (*core-file* filenamestring
2783 :element-type '(unsigned-byte 8)
2784 :if-exists :rename-and-delete)
2786 ;; Write the magic number.
2787 (write-long core-magic)
2789 ;; Write the Version entry.
2790 (write-long version-entry-type-code)
2792 (write-long sbcl-core-version-integer)
2794 ;; Write the New Directory entry header.
2795 (write-long new-directory-entry-type-code)
2796 (write-long 17) ; length = (5 words/space) * 3 spaces + 2 for header.
2798 (output-gspace *read-only*)
2799 (output-gspace *static*)
2800 (output-gspace *dynamic*)
2802 ;; Write the initial function.
2803 (write-long initial-function-entry-type-code)
2805 (let* ((cold-name (cold-intern '!cold-init))
2806 (cold-fdefn (cold-fdefinition-object cold-name))
2807 (initial-function (read-wordindexed cold-fdefn
2808 sb!vm:fdefn-function-slot)))
2810 "~&/(DESCRIPTOR-BITS INITIAL-FUNCTION)=#X~X~%"
2811 (descriptor-bits initial-function))
2812 (write-long (descriptor-bits initial-function)))
2814 ;; Write the End entry.
2815 (write-long end-entry-type-code)
2818 (format t "done]~%")
2820 (/show "leaving WRITE-INITIAL-CORE-FILE")
2823 ;;;; the actual GENESIS function
2825 ;;; Read the FASL files in OBJECT-FILE-NAMES and produce a Lisp core,
2826 ;;; and/or information about a Lisp core, therefrom.
2828 ;;; input file arguments:
2829 ;;; SYMBOL-TABLE-FILE-NAME names a UNIX-style .nm file *with* *any*
2830 ;;; *tab* *characters* *converted* *to* *spaces*. (We push
2831 ;;; responsibility for removing tabs out to the caller it's
2832 ;;; trivial to remove them using UNIX command line tools like
2833 ;;; sed, whereas it's a headache to do it portably in Lisp because
2834 ;;; #\TAB is not a STANDARD-CHAR.) If this file is not supplied,
2835 ;;; a core file cannot be built (but a C header file can be).
2837 ;;; output files arguments (any of which may be NIL to suppress output):
2838 ;;; CORE-FILE-NAME gets a Lisp core.
2839 ;;; C-HEADER-FILE-NAME gets a C header file, traditionally called
2840 ;;; internals.h, which is used by the C compiler when constructing
2841 ;;; the executable which will load the core.
2842 ;;; MAP-FILE-NAME gets (?) a map file. (dunno about this -- WHN 19990815)
2844 ;;; other arguments:
2845 ;;; BYTE-ORDER-SWAP-P controls whether GENESIS tries to swap bytes
2846 ;;; in some places in the output. It's only appropriate when
2847 ;;; cross-compiling from a machine with one byte order to a
2848 ;;; machine with the opposite byte order, which is irrelevant in
2849 ;;; current (19990816) SBCL, since only the X86 architecture is
2850 ;;; supported. If you're trying to add support for more
2851 ;;; architectures, see the comments on DEFVAR
2852 ;;; *GENESIS-BYTE-ORDER-SWAP-P* for more information.
2854 ;;; FIXME: GENESIS doesn't belong in SB!VM. Perhaps in %KERNEL for now,
2855 ;;; perhaps eventually in SB-LD or SB-BOOT.
2856 (defun sb!vm:genesis (&key
2858 symbol-table-file-name
2864 (when (and core-file-name
2865 (not symbol-table-file-name))
2866 (error "can't output a core file without symbol table file input"))
2869 "~&beginning GENESIS, ~A~%"
2871 ;; Note: This output summarizing what we're doing is
2872 ;; somewhat telegraphic in style, not meant to imply that
2873 ;; we're not e.g. also creating a header file when we
2875 (format nil "creating core ~S" core-file-name)
2876 (format nil "creating header ~S" c-header-file-name)))
2878 (let* ((*cold-foreign-symbol-table* (make-hash-table :test 'equal)))
2880 ;; Read symbol table, if any.
2881 (when symbol-table-file-name
2882 (load-cold-foreign-symbol-table symbol-table-file-name))
2884 ;; Now that we've successfully read our only input file (by
2885 ;; loading the symbol table, if any), it's a good time to ensure
2886 ;; that there'll be someplace for our output files to go when
2888 (flet ((frob (filename)
2890 (ensure-directories-exist filename :verbose t))))
2891 (frob core-file-name)
2892 (frob map-file-name)
2893 (frob c-header-file-name))
2895 ;; (This shouldn't matter in normal use, since GENESIS normally
2896 ;; only runs once in any given Lisp image, but it could reduce
2897 ;; confusion if we ever experiment with running, tweaking, and
2898 ;; rerunning genesis interactively.)
2899 (do-all-symbols (sym)
2900 (remprop sym 'cold-intern-info))
2902 (let* ((*foreign-symbol-placeholder-value* (if core-file-name nil 0))
2903 (*load-time-value-counter* 0)
2904 (*genesis-byte-order-swap-p* byte-order-swap-p)
2905 (*cold-fdefn-objects* (make-hash-table :test 'equal))
2906 (*cold-symbols* (make-hash-table :test 'equal))
2907 (*cold-package-symbols* nil)
2908 (*read-only* (make-gspace :read-only
2910 sb!vm:read-only-space-start))
2911 (*static* (make-gspace :static
2913 sb!vm:static-space-start))
2914 (*dynamic* (make-gspace :dynamic
2916 sb!vm:dynamic-space-start))
2917 (*nil-descriptor* (make-nil-descriptor))
2918 (*current-reversed-cold-toplevels* *nil-descriptor*)
2919 (*unbound-marker* (make-other-immediate-descriptor
2921 sb!vm:unbound-marker-type))
2922 *cold-assembler-fixups*
2923 *cold-assembler-routines*
2924 #!+x86 *load-time-code-fixups*)
2926 ;; Prepare for cold load.
2927 (initialize-non-nil-symbols)
2928 (initialize-layouts)
2929 (initialize-static-fns)
2931 ;; Initialize the *COLD-SYMBOLS* system with the information
2932 ;; from package-data-list.lisp-expr and
2933 ;; common-lisp-exports.lisp-expr.
2935 ;; Why do things this way? Historically, the *COLD-SYMBOLS*
2936 ;; machinery was designed and implemented in CMU CL long before
2937 ;; I (WHN) ever heard of CMU CL. It dumped symbols and packages
2938 ;; iff they were used in the cold image. When I added the
2939 ;; package-data-list.lisp-expr mechanism, the idea was to
2940 ;; centralize all information about packages and exports. Thus,
2941 ;; it was the natural place for information even about packages
2942 ;; (such as SB!PCL and SB!WALKER) which aren't used much until
2943 ;; after cold load. This didn't quite match the CMU CL approach
2944 ;; of filling *COLD-SYMBOLS* with symbols which appear in the
2945 ;; cold image and then dumping only those symbols. By explicitly
2946 ;; putting all the symbols from package-data-list.lisp-expr and
2947 ;; from common-lisp-exports.lisp-expr into *COLD-SYMBOLS* here,
2948 ;; we feed our centralized symbol information into the old CMU
2949 ;; CL code without having to change the old CMU CL code too
2950 ;; much. (And the old CMU CL code is still useful for making
2951 ;; sure that the appropriate keywords and internal symbols end
2952 ;; up interned in the target Lisp, which is good, e.g. in order
2953 ;; to make &KEY arguments work right and in order to make
2954 ;; BACKTRACEs into target Lisp system code be legible.)
2955 (dolist (exported-name
2956 (sb-cold:read-from-file "common-lisp-exports.lisp-expr"))
2957 (cold-intern (intern exported-name *cl-package*)))
2958 (dolist (pd (sb-cold:read-from-file "package-data-list.lisp-expr"))
2959 (declare (type sb-cold:package-data pd))
2960 (let ((package (find-package (sb-cold:package-data-name pd))))
2961 (labels (;; Call FN on every node of the TREE.
2962 (mapc-on-tree (fn tree)
2964 (cons (mapc-on-tree fn (car tree))
2965 (mapc-on-tree fn (cdr tree)))
2966 (t (funcall fn tree)
2968 ;; Make sure that information about the association
2969 ;; between PACKAGE and the symbol named NAME gets
2970 ;; recorded in the cold-intern system or (as a
2971 ;; convenience when dealing with the tree structure
2972 ;; allowed in the PACKAGE-DATA-EXPORTS slot) do
2973 ;; nothing if NAME is NIL.
2976 (cold-intern (intern name package) package))))
2977 (mapc-on-tree #'chill (sb-cold:package-data-export pd))
2978 (mapc #'chill (sb-cold:package-data-reexport pd))
2979 (dolist (sublist (sb-cold:package-data-import-from pd))
2980 (destructuring-bind (package-name &rest symbol-names) sublist
2981 (declare (ignore package-name))
2982 (mapc #'chill symbol-names))))))
2985 (dolist (file-name object-file-names)
2986 (write-line (namestring file-name))
2987 (cold-load file-name))
2989 ;; Tidy up loose ends left by cold loading. ("Postpare from cold load?")
2990 (resolve-assembler-fixups)
2991 #!+x86 (output-load-time-code-fixups)
2992 (linkage-info-to-core)
2994 (/show "back from FINISH-SYMBOLS")
2995 (finalize-load-time-value-noise)
2997 ;; Tell the target Lisp how much stuff we've allocated.
2998 (cold-set 'sb!vm:*read-only-space-free-pointer*
2999 (allocate-descriptor *read-only* 0 sb!vm:even-fixnum-type))
3000 (cold-set 'sb!vm:*static-space-free-pointer*
3001 (allocate-descriptor *static* 0 sb!vm:even-fixnum-type))
3002 (cold-set 'sb!vm:*initial-dynamic-space-free-pointer*
3003 (allocate-descriptor *dynamic* 0 sb!vm:even-fixnum-type))
3004 (/show "done setting free pointers")
3006 ;; Write results to files.
3008 ;; FIXME: I dislike this approach of redefining
3009 ;; *STANDARD-OUTPUT* instead of putting the new stream in a
3010 ;; lexical variable, and it's annoying to have WRITE-MAP (to
3011 ;; *STANDARD-OUTPUT*) not be parallel to WRITE-INITIAL-CORE-FILE
3012 ;; (to a stream explicitly passed as an argument).
3014 (with-open-file (*standard-output* map-file-name
3016 :if-exists :supersede)
3018 (when c-header-file-name
3019 (with-open-file (*standard-output* c-header-file-name
3021 :if-exists :supersede)
3023 (when core-file-name
3024 (write-initial-core-file core-file-name)))))