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!IMPL")
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
66 (defconstant dynamic-space-id 1)
69 (defconstant static-space-id 2)
72 (defconstant read-only-space-id 3)
74 (defconstant descriptor-low-bits 16
75 "the number of bits in the low half of the descriptor")
76 (defconstant target-space-alignment (ash 1 descriptor-low-bits)
77 "the alignment requirement for spaces in the target.
78 Must be at least (ASH 1 DESCRIPTOR-LOW-BITS)")
80 ;;; a GENESIS-time representation of a memory space (e.g. read-only space,
81 ;;; dynamic space, or static space)
82 (defstruct (gspace (:constructor %make-gspace)
84 ;; name and identifier for this GSPACE
85 (name (required-argument) :type symbol :read-only t)
86 (identifier (required-argument) :type fixnum :read-only t)
87 ;; the word address where the data will be loaded
88 (word-address (required-argument) :type unsigned-byte :read-only t)
89 ;; the data themselves. (Note that in CMU CL this was a pair
90 ;; of fields SAP and WORDS-ALLOCATED, but that wasn't very portable.)
91 (bytes (make-array target-space-alignment :element-type '(unsigned-byte 8))
92 :type (simple-array (unsigned-byte 8) 1))
93 ;; the index of the next unwritten word (i.e. chunk of
94 ;; SB!VM:WORD-BYTES bytes) in BYTES, or equivalently the number of
95 ;; words actually written in BYTES. In order to convert to an actual
96 ;; index into BYTES, thus must be multiplied by SB!VM:WORD-BYTES.
99 (defun gspace-byte-address (gspace)
100 (ash (gspace-word-address gspace) sb!vm:word-shift))
102 (def!method print-object ((gspace gspace) stream)
103 (print-unreadable-object (gspace stream :type t)
104 (format stream "~S" (gspace-name gspace))))
106 (defun make-gspace (name identifier byte-address)
107 (unless (zerop (rem byte-address target-space-alignment))
108 (error "The byte address #X~X is not aligned on a #X~X-byte boundary."
110 target-space-alignment))
111 (%make-gspace :name name
112 :identifier identifier
113 :word-address (ash byte-address (- sb!vm:word-shift))))
115 ;;; KLUDGE: Doing it this way seems to partly replicate the
116 ;;; functionality of Common Lisp adjustable arrays. Is there any way
117 ;;; to do this stuff in one line of code by using standard Common Lisp
118 ;;; stuff? -- WHN 19990816
119 (defun expand-gspace-bytes (gspace)
120 (let* ((old-bytes (gspace-bytes gspace))
121 (old-length (length old-bytes))
122 (new-length (* 2 old-length))
123 (new-bytes (make-array new-length :element-type '(unsigned-byte 8))))
124 (replace new-bytes old-bytes :end1 old-length)
125 (setf (gspace-bytes gspace)
129 ;;;; representation of descriptors
131 (defstruct (descriptor
132 (:constructor make-descriptor
133 (high low &optional gspace word-offset))
135 ;; the GSPACE that this descriptor is allocated in, or NIL if not set yet.
136 (gspace nil :type (or gspace null))
137 ;; the offset in words from the start of GSPACE, or NIL if not set yet
138 (word-offset nil :type (or (unsigned-byte #.sb!vm:word-bits) null))
139 ;; the high and low halves of the descriptor KLUDGE: Judging from
140 ;; the comments in genesis.lisp of the CMU CL old-rt compiler, this
141 ;; split dates back from a very early version of genesis where
142 ;; 32-bit integers were represented as conses of two 16-bit
143 ;; integers. In any system with nice (UNSIGNED-BYTE 32) structure
144 ;; slots, like CMU CL >= 17 or any version of SBCL, there seems to
145 ;; be no reason to persist in this. -- WHN 19990917
147 (def!method print-object ((des descriptor) stream)
148 (let ((lowtag (descriptor-lowtag des)))
149 (print-unreadable-object (des stream :type t)
150 (cond ((or (= lowtag sb!vm:even-fixnum-type)
151 (= lowtag sb!vm:odd-fixnum-type))
152 (let ((unsigned (logior (ash (descriptor-high des)
153 (1+ (- descriptor-low-bits
155 (ash (descriptor-low des)
156 (- 1 sb!vm:lowtag-bits)))))
159 (if (> unsigned #x1FFFFFFF)
160 (- unsigned #x40000000)
162 ((or (= lowtag sb!vm:other-immediate-0-type)
163 (= lowtag sb!vm:other-immediate-1-type))
165 "for other immediate: #X~X, type #b~8,'0B"
166 (ash (descriptor-bits des) (- sb!vm:type-bits))
167 (logand (descriptor-low des) sb!vm:type-mask)))
170 "for pointer: #X~X, lowtag #b~3,'0B, ~A"
171 (logior (ash (descriptor-high des) descriptor-low-bits)
172 (logandc2 (descriptor-low des) sb!vm:lowtag-mask))
174 (let ((gspace (descriptor-gspace des)))
179 (defun allocate-descriptor (gspace length lowtag)
181 "Return a descriptor for a block of LENGTH bytes out of GSPACE. The free
182 word index is boosted as necessary, and if additional memory is needed, we
183 grow the GSPACE. The descriptor returned is a pointer of type LOWTAG."
184 (let* ((bytes (round-up length (ash 1 sb!vm:lowtag-bits)))
185 (old-free-word-index (gspace-free-word-index gspace))
186 (new-free-word-index (+ old-free-word-index
187 (ash bytes (- sb!vm:word-shift)))))
188 ;; Grow GSPACE as necessary until it's big enough to handle
189 ;; NEW-FREE-WORD-INDEX.
191 ((>= (length (gspace-bytes gspace))
192 (* new-free-word-index sb!vm:word-bytes)))
193 (expand-gspace-bytes gspace))
194 ;; Now that GSPACE is big enough, we can meaningfully grab a chunk of it.
195 (setf (gspace-free-word-index gspace) new-free-word-index)
196 (let ((ptr (+ (gspace-word-address gspace) old-free-word-index)))
197 (make-descriptor (ash ptr (- sb!vm:word-shift descriptor-low-bits))
198 (logior (ash (logand ptr
200 (- descriptor-low-bits
205 old-free-word-index))))
207 (defun descriptor-lowtag (des)
209 "the lowtag bits for DES"
210 (logand (descriptor-low des) sb!vm:lowtag-mask))
212 (defun descriptor-bits (des)
213 (logior (ash (descriptor-high des) descriptor-low-bits)
214 (descriptor-low des)))
216 (defun descriptor-fixnum (des)
217 (let ((bits (descriptor-bits des)))
218 (if (logbitp (1- sb!vm:word-bits) bits)
219 ;; KLUDGE: The (- SB!VM:WORD-BITS 2) term here looks right to
220 ;; me, and it works, but in CMU CL it was (1- SB!VM:WORD-BITS),
221 ;; and although that doesn't make sense for me, or work for me,
222 ;; it's hard to see how it could have been wrong, since CMU CL
223 ;; genesis worked. It would be nice to understand how this came
224 ;; to be.. -- WHN 19990901
225 (logior (ash bits -2) (ash -1 (- sb!vm:word-bits 2)))
229 (defun descriptor-bytes (des)
230 (gspace-bytes (descriptor-intuit-gspace des)))
231 (defun descriptor-byte-offset (des)
232 (ash (descriptor-word-offset des) sb!vm:word-shift))
234 ;;; If DESCRIPTOR-GSPACE is already set, just return that. Otherwise,
235 ;;; figure out a GSPACE which corresponds to DES, set it into
236 ;;; (DESCRIPTOR-GSPACE DES), set a consistent value into
237 ;;; (DESCRIPTOR-WORD-OFFSET DES), and return the GSPACE.
238 (declaim (ftype (function (descriptor) gspace) descriptor-intuit-gspace))
239 (defun descriptor-intuit-gspace (des)
240 (if (descriptor-gspace des)
241 (descriptor-gspace des)
242 ;; KLUDGE: It's not completely clear to me what's going on here;
243 ;; this is a literal translation from of some rather mysterious
244 ;; code from CMU CL's DESCRIPTOR-SAP function. Some explanation
245 ;; would be nice. -- WHN 19990817
246 (let ((lowtag (descriptor-lowtag des))
247 (high (descriptor-high des))
248 (low (descriptor-low des)))
249 (if (or (eql lowtag sb!vm:function-pointer-type)
250 (eql lowtag sb!vm:instance-pointer-type)
251 (eql lowtag sb!vm:list-pointer-type)
252 (eql lowtag sb!vm:other-pointer-type))
253 (dolist (gspace (list *dynamic* *static* *read-only*)
254 (error "couldn't find a GSPACE for ~S" des))
255 ;; This code relies on the fact that GSPACEs are aligned such that
256 ;; the descriptor-low-bits low bits are zero.
257 (when (and (>= high (ash (gspace-word-address gspace)
258 (- sb!vm:word-shift descriptor-low-bits)))
259 (<= high (ash (+ (gspace-word-address gspace)
260 (gspace-free-word-index gspace))
261 (- sb!vm:word-shift descriptor-low-bits))))
262 (setf (descriptor-gspace des) gspace)
263 (setf (descriptor-word-offset des)
264 (+ (ash (- high (ash (gspace-word-address gspace)
266 descriptor-low-bits)))
267 (- descriptor-low-bits sb!vm:word-shift))
268 (ash (logandc2 low sb!vm:lowtag-mask)
269 (- sb!vm:word-shift))))
271 (error "don't even know how to look for a GSPACE for ~S" des)))))
273 (defun make-random-descriptor (value)
274 (make-descriptor (logand (ash value (- descriptor-low-bits))
276 (- sb!vm:word-bits descriptor-low-bits))))
277 (logand value (1- (ash 1 descriptor-low-bits)))))
279 (defun make-fixnum-descriptor (num)
280 (when (>= (integer-length num)
281 (1+ (- sb!vm:word-bits sb!vm:lowtag-bits)))
282 (error "~D is too big for a fixnum." num))
283 (make-random-descriptor (ash num (1- sb!vm:lowtag-bits))))
285 (defun make-other-immediate-descriptor (data type)
286 (make-descriptor (ash data (- sb!vm:type-bits descriptor-low-bits))
287 (logior (logand (ash data (- descriptor-low-bits
289 (1- (ash 1 descriptor-low-bits)))
292 (defun make-character-descriptor (data)
293 (make-other-immediate-descriptor data sb!vm:base-char-type))
295 (defun descriptor-beyond (des offset type)
296 (let* ((low (logior (+ (logandc2 (descriptor-low des) sb!vm:lowtag-mask)
299 (high (+ (descriptor-high des)
300 (ash low (- descriptor-low-bits)))))
301 (make-descriptor high (logand low (1- (ash 1 descriptor-low-bits))))))
303 ;;;; miscellaneous variables and other noise
305 ;;; a numeric value to be returned for undefined foreign symbols, or NIL if
306 ;;; undefined foreign symbols are to be treated as an error.
307 ;;; (In the first pass of GENESIS, needed to create a header file before
308 ;;; the C runtime can be built, various foreign symbols will necessarily
309 ;;; be undefined, but we don't need actual values for them anyway, and
310 ;;; we can just use 0 or some other placeholder. In the second pass of
311 ;;; GENESIS, all foreign symbols should be defined, so any undefined
312 ;;; foreign symbol is a problem.)
314 ;;; KLUDGE: It would probably be cleaner to rewrite GENESIS so that it
315 ;;; never tries to look up foreign symbols in the first place unless
316 ;;; it's actually creating a core file (as in the second pass) instead
317 ;;; of using this hack to allow it to go through the motions without
318 ;;; causing an error. -- WHN 20000825
319 (defvar *foreign-symbol-placeholder-value*)
321 ;;; a handle on the trap object
322 (defvar *unbound-marker*)
323 ;; was: (make-other-immediate-descriptor 0 sb!vm:unbound-marker-type)
325 ;;; a handle on the NIL object
326 (defvar *nil-descriptor*)
328 ;;; the head of a list of TOPLEVEL-THINGs describing stuff to be done
329 ;;; when the target Lisp starts up
331 ;;; Each TOPLEVEL-THING can be a function to be executed or a fixup or
332 ;;; loadtime value, represented by (CONS KEYWORD ..). The FILENAME
333 ;;; tells which fasl file each list element came from, for debugging
335 (defvar *current-reversed-cold-toplevels*)
337 ;;; the name of the object file currently being cold loaded (as a string, not a
338 ;;; pathname), or NIL if we're not currently cold loading any object file
339 (defvar *cold-load-filename* nil)
340 (declaim (type (or string null) *cold-load-filename*))
342 ;;; This is vestigial support for the CMU CL byte-swapping code. CMU
343 ;;; CL code tested for whether it needed to swap bytes in GENESIS by
344 ;;; comparing the byte order of *BACKEND* to the byte order of
345 ;;; *NATIVE-BACKEND*, a concept which doesn't exist in SBCL. Instead,
346 ;;; in SBCL byte order swapping would need to be explicitly requested
347 ;;; with a &KEY argument to GENESIS.
349 ;;; I'm not sure whether this is a problem or not, and I don't have a
350 ;;; machine with different byte order to test to find out for sure.
351 ;;; The version of the system which is fed to the cross-compiler is
352 ;;; now written in a subset of Common Lisp which doesn't require
353 ;;; dumping a lot of things in such a way that machine byte order
354 ;;; matters. (Mostly this is a matter of not using any specialized
355 ;;; array type unless there's portable, high-level code to dump it.)
356 ;;; If it *is* a problem, and you're trying to resurrect this code,
357 ;;; please test particularly carefully, since I haven't had a chance
358 ;;; to test the byte-swapping code at all. -- WHN 19990816
360 ;;; When this variable is non-NIL, byte-swapping is enabled wherever
361 ;;; classic GENESIS would have done it. I.e. the value of this variable
362 ;;; is the logical complement of
363 ;;; (EQ (SB!C:BACKEND-BYTE-ORDER SB!C:*NATIVE-BACKEND*)
364 ;;; (SB!C:BACKEND-BYTE-ORDER SB!C:*BACKEND*))
366 (defvar *genesis-byte-order-swap-p*)
368 ;;;; miscellaneous stuff to read and write the core memory
370 ;;; FIXME: should be DEFINE-MODIFY-MACRO
371 (defmacro cold-push (thing list)
373 "Push THING onto the given cold-load LIST."
374 `(setq ,list (cold-cons ,thing ,list)))
376 (defun maybe-byte-swap (word)
377 (declare (type (unsigned-byte 32) word))
378 (aver (= sb!vm:word-bits 32))
379 (aver (= sb!vm:byte-bits 8))
380 (if (not *genesis-byte-order-swap-p*)
382 (logior (ash (ldb (byte 8 0) word) 24)
383 (ash (ldb (byte 8 8) word) 16)
384 (ash (ldb (byte 8 16) word) 8)
385 (ldb (byte 8 24) word))))
387 (defun maybe-byte-swap-short (short)
388 (declare (type (unsigned-byte 16) short))
389 (aver (= sb!vm:word-bits 32))
390 (aver (= sb!vm:byte-bits 8))
391 (if (not *genesis-byte-order-swap-p*)
393 (logior (ash (ldb (byte 8 0) short) 8)
394 (ldb (byte 8 8) short))))
396 ;;; BYTE-VECTOR-REF-32 and friends. These are like SAP-REF-n, except
397 ;;; that instead of a SAP we use a byte vector
398 (macrolet ((make-byte-vector-ref-n
400 (let* ((name (intern (format nil "BYTE-VECTOR-REF-~A" n)))
401 (number-octets (/ n 8))
403 (loop for i from 0 to (1- number-octets)
404 collect `(ash (aref byte-vector (+ byte-index ,i))
407 (loop for i from 0 to (1- number-octets)
409 `((aref byte-vector (+ byte-index ,i))
410 (ldb (byte 8 ,(* i 8)) new-value)))))
412 (defun ,name (byte-vector byte-index)
413 (aver (= sb!vm:word-bits 32))
414 (aver (= sb!vm:byte-bits 8))
415 (ecase sb!c:*backend-byte-order*
419 (error "stub: no big-endian ports of SBCL (yet?)"))))
420 (defun (setf ,name) (new-value byte-vector byte-index)
421 (aver (= sb!vm:word-bits 32))
422 (aver (= sb!vm:byte-bits 8))
423 (ecase sb!c:*backend-byte-order*
427 (error "stub: no big-endian ports of SBCL (yet?)"))))))))
428 (make-byte-vector-ref-n 8)
429 (make-byte-vector-ref-n 16)
430 (make-byte-vector-ref-n 32))
432 (declaim (ftype (function (descriptor sb!vm:word) descriptor) read-wordindexed))
433 (defun read-wordindexed (address index)
435 "Return the value which is displaced by INDEX words from ADDRESS."
436 (let* ((gspace (descriptor-intuit-gspace address))
437 (bytes (gspace-bytes gspace))
438 (byte-index (ash (+ index (descriptor-word-offset address))
440 ;; KLUDGE: Do we really need to do byte swap here? It seems
441 ;; as though we shouldn't.. (This attempts to be a literal
442 ;; translation of CMU CL code, and I don't have a big-endian
443 ;; machine to test it.) -- WHN 19990817
444 (value (maybe-byte-swap (byte-vector-ref-32 bytes byte-index))))
445 (make-random-descriptor value)))
447 (declaim (ftype (function (descriptor) descriptor) read-memory))
448 (defun read-memory (address)
450 "Return the value at ADDRESS."
451 (read-wordindexed address 0))
453 ;;; (Note: In CMU CL, this function expected a SAP-typed ADDRESS
454 ;;; value, instead of the SAPINT we use here.)
455 (declaim (ftype (function (sb!vm:word descriptor) (values)) note-load-time-value-reference))
456 (defun note-load-time-value-reference (address marker)
457 (cold-push (cold-cons
458 (cold-intern :load-time-value-fixup)
459 (cold-cons (sapint-to-core address)
461 (number-to-core (descriptor-word-offset marker))
463 *current-reversed-cold-toplevels*)
466 (declaim (ftype (function (descriptor sb!vm:word descriptor)) write-wordindexed))
467 (defun write-wordindexed (address index value)
469 "Write VALUE displaced INDEX words from ADDRESS."
470 ;; KLUDGE: There is an algorithm (used in DESCRIPTOR-INTUIT-GSPACE)
471 ;; for calculating the value of the GSPACE slot from scratch. It
472 ;; doesn't work for all values, only some of them, but mightn't it
473 ;; be reasonable to see whether it works on VALUE before we give up
474 ;; because (DESCRIPTOR-GSPACE VALUE) isn't set? (Or failing that,
475 ;; perhaps write a comment somewhere explaining why it's not a good
476 ;; idea?) -- WHN 19990817
477 (if (and (null (descriptor-gspace value))
478 (not (null (descriptor-word-offset value))))
479 (note-load-time-value-reference (+ (logandc2 (descriptor-bits address)
481 (ash index sb!vm:word-shift))
483 ;; Note: There's a MAYBE-BYTE-SWAP in here in CMU CL, which I
484 ;; think is unnecessary now that we're doing the write
485 ;; byte-by-byte at high level. (I can't test this, though..) --
487 (let* ((bytes (gspace-bytes (descriptor-intuit-gspace address)))
488 (byte-index (ash (+ index (descriptor-word-offset address))
490 (setf (byte-vector-ref-32 bytes byte-index)
491 (maybe-byte-swap (descriptor-bits value))))))
493 (declaim (ftype (function (descriptor descriptor)) write-memory))
494 (defun write-memory (address value)
496 "Write VALUE (a DESCRIPTOR) at ADDRESS (also a DESCRIPTOR)."
497 (write-wordindexed address 0 value))
499 ;;;; allocating images of primitive objects in the cold core
501 ;;; There are three kinds of blocks of memory in the type system:
502 ;;; * Boxed objects (cons cells, structures, etc): These objects have no
503 ;;; header as all slots are descriptors.
504 ;;; * Unboxed objects (bignums): There is a single header word that contains
506 ;;; * Vector objects: There is a header word with the type, then a word for
507 ;;; the length, then the data.
508 (defun allocate-boxed-object (gspace length lowtag)
510 "Allocate LENGTH words in GSPACE and return a new descriptor of type LOWTAG
512 (allocate-descriptor gspace (ash length sb!vm:word-shift) lowtag))
513 (defun allocate-unboxed-object (gspace element-bits length type)
515 "Allocate LENGTH units of ELEMENT-BITS bits plus a header word in GSPACE and
516 return an ``other-pointer'' descriptor to them. Initialize the header word
517 with the resultant length and TYPE."
518 (let* ((bytes (/ (* element-bits length) sb!vm:byte-bits))
519 (des (allocate-descriptor gspace
520 (+ bytes sb!vm:word-bytes)
521 sb!vm:other-pointer-type)))
523 (make-other-immediate-descriptor (ash bytes
524 (- sb!vm:word-shift))
527 (defun allocate-vector-object (gspace element-bits length type)
529 "Allocate LENGTH units of ELEMENT-BITS size plus a header plus a length slot in
530 GSPACE and return an ``other-pointer'' descriptor to them. Initialize the
531 header word with TYPE and the length slot with LENGTH."
532 ;; FIXME: Here and in ALLOCATE-UNBOXED-OBJECT, BYTES is calculated using
533 ;; #'/ instead of #'CEILING, which seems wrong.
534 (let* ((bytes (/ (* element-bits length) sb!vm:byte-bits))
535 (des (allocate-descriptor gspace (+ bytes (* 2 sb!vm:word-bytes))
536 sb!vm:other-pointer-type)))
537 (write-memory des (make-other-immediate-descriptor 0 type))
538 (write-wordindexed des
539 sb!vm:vector-length-slot
540 (make-fixnum-descriptor length))
543 ;;;; copying simple objects into the cold core
545 (defun string-to-core (string &optional (gspace *dynamic*))
547 "Copy string into the cold core and return a descriptor to it."
548 ;; (Remember that the system convention for storage of strings leaves an
549 ;; extra null byte at the end to aid in call-out to C.)
550 (let* ((length (length string))
551 (des (allocate-vector-object gspace
554 sb!vm:simple-string-type))
555 (bytes (gspace-bytes gspace))
556 (offset (+ (* sb!vm:vector-data-offset sb!vm:word-bytes)
557 (descriptor-byte-offset des))))
558 (write-wordindexed des
559 sb!vm:vector-length-slot
560 (make-fixnum-descriptor length))
562 (setf (aref bytes (+ offset i))
563 ;; KLUDGE: There's no guarantee that the character
564 ;; encoding here will be the same as the character
565 ;; encoding on the target machine, so using CHAR-CODE as
566 ;; we do, or a bitwise copy as CMU CL code did, is sleazy.
567 ;; (To make this more portable, perhaps we could use
568 ;; indices into the sequence which is used to test whether
569 ;; a character is a STANDARD-CHAR?) -- WHN 19990817
570 (char-code (aref string i))))
571 (setf (aref bytes (+ offset length))
572 0) ; null string-termination character for C
575 (defun bignum-to-core (n)
577 "Copy a bignum to the cold core."
578 (let* ((words (ceiling (1+ (integer-length n)) sb!vm:word-bits))
579 (handle (allocate-unboxed-object *dynamic*
583 (declare (fixnum words))
584 (do ((index 1 (1+ index))
585 (remainder n (ash remainder (- sb!vm:word-bits))))
587 (unless (zerop (integer-length remainder))
588 ;; FIXME: Shouldn't this be a fatal error?
589 (warn "~D words of ~D were written, but ~D bits were left over."
591 (let ((word (ldb (byte sb!vm:word-bits 0) remainder)))
592 (write-wordindexed handle index
593 (make-descriptor (ash word (- descriptor-low-bits))
594 (ldb (byte descriptor-low-bits 0)
598 (defun number-pair-to-core (first second type)
600 "Makes a number pair of TYPE (ratio or complex) and fills it in."
601 (let ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits 2 type)))
602 (write-wordindexed des 1 first)
603 (write-wordindexed des 2 second)
606 (defun float-to-core (x)
609 (let ((des (allocate-unboxed-object *dynamic*
611 (1- sb!vm:single-float-size)
612 sb!vm:single-float-type)))
613 (write-wordindexed des
614 sb!vm:single-float-value-slot
615 (make-random-descriptor (single-float-bits x)))
618 (let ((des (allocate-unboxed-object *dynamic*
620 (1- sb!vm:double-float-size)
621 sb!vm:double-float-type))
622 (high-bits (make-random-descriptor (double-float-high-bits x)))
623 (low-bits (make-random-descriptor (double-float-low-bits x))))
624 (ecase sb!c:*backend-byte-order*
626 (write-wordindexed des sb!vm:double-float-value-slot low-bits)
627 (write-wordindexed des (1+ sb!vm:double-float-value-slot) high-bits))
629 (write-wordindexed des sb!vm:double-float-value-slot high-bits)
630 (write-wordindexed des (1+ sb!vm:double-float-value-slot) low-bits)))
632 #!+(and long-float x86)
634 (let ((des (allocate-unboxed-object *dynamic*
636 (1- sb!vm:long-float-size)
637 sb!vm:long-float-type))
638 (exp-bits (make-random-descriptor (long-float-exp-bits x)))
639 (high-bits (make-random-descriptor (long-float-high-bits x)))
640 (low-bits (make-random-descriptor (long-float-low-bits x))))
641 (ecase sb!c:*backend-byte-order*
643 (write-wordindexed des sb!vm:long-float-value-slot low-bits)
644 (write-wordindexed des (1+ sb!vm:long-float-value-slot) high-bits)
645 (write-wordindexed des (+ 2 sb!vm:long-float-value-slot) exp-bits))
647 (error "LONG-FLOAT is not supported for big-endian byte order.")))
650 (defun complex-single-float-to-core (num)
651 (declare (type (complex single-float) num))
652 (let ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits
653 (1- sb!vm:complex-single-float-size)
654 sb!vm:complex-single-float-type)))
655 (write-wordindexed des sb!vm:complex-single-float-real-slot
656 (make-random-descriptor (single-float-bits (realpart num))))
657 (write-wordindexed des sb!vm:complex-single-float-imag-slot
658 (make-random-descriptor (single-float-bits (imagpart num))))
661 (defun complex-double-float-to-core (num)
662 (declare (type (complex double-float) num))
663 (let ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits
664 (1- sb!vm:complex-double-float-size)
665 sb!vm:complex-double-float-type)))
666 (let* ((real (realpart num))
667 (high-bits (make-random-descriptor (double-float-high-bits real)))
668 (low-bits (make-random-descriptor (double-float-low-bits real))))
669 (ecase sb!c:*backend-byte-order*
671 (write-wordindexed des sb!vm:complex-double-float-real-slot low-bits)
672 (write-wordindexed des (1+ sb!vm:complex-double-float-real-slot) high-bits))
674 (write-wordindexed des sb!vm:complex-double-float-real-slot high-bits)
675 (write-wordindexed des (1+ sb!vm:complex-double-float-real-slot) low-bits))))
676 (let* ((imag (imagpart num))
677 (high-bits (make-random-descriptor (double-float-high-bits imag)))
678 (low-bits (make-random-descriptor (double-float-low-bits imag))))
679 (ecase sb!c:*backend-byte-order*
681 (write-wordindexed des sb!vm:complex-double-float-imag-slot low-bits)
682 (write-wordindexed des (1+ sb!vm:complex-double-float-imag-slot) high-bits))
684 (write-wordindexed des sb!vm:complex-double-float-imag-slot high-bits)
685 (write-wordindexed des (1+ sb!vm:complex-double-float-imag-slot) low-bits))))
688 (defun number-to-core (number)
690 "Copy the given number to the core, or flame out if we can't deal with it."
692 (integer (if (< (integer-length number) 30)
693 (make-fixnum-descriptor number)
694 (bignum-to-core number)))
695 (ratio (number-pair-to-core (number-to-core (numerator number))
696 (number-to-core (denominator number))
698 ((complex single-float) (complex-single-float-to-core number))
699 ((complex double-float) (complex-double-float-to-core number))
701 ((complex long-float)
702 (error "~S isn't a cold-loadable number at all!" number))
703 (complex (number-pair-to-core (number-to-core (realpart number))
704 (number-to-core (imagpart number))
706 (float (float-to-core number))
707 (t (error "~S isn't a cold-loadable number at all!" number))))
709 (declaim (ftype (function (sb!vm:word) descriptor) sap-to-core))
710 (defun sapint-to-core (sapint)
711 (let ((des (allocate-unboxed-object *dynamic*
715 (write-wordindexed des
716 sb!vm:sap-pointer-slot
717 (make-random-descriptor sapint))
720 ;;; Allocate a cons cell in GSPACE and fill it in with CAR and CDR.
721 (defun cold-cons (car cdr &optional (gspace *dynamic*))
722 (let ((dest (allocate-boxed-object gspace 2 sb!vm:list-pointer-type)))
723 (write-memory dest car)
724 (write-wordindexed dest 1 cdr)
727 ;;; Make a simple-vector that holds the specified OBJECTS, and return its
729 (defun vector-in-core (&rest objects)
730 (let* ((size (length objects))
731 (result (allocate-vector-object *dynamic* sb!vm:word-bits size
732 sb!vm:simple-vector-type)))
733 (dotimes (index size)
734 (write-wordindexed result (+ index sb!vm:vector-data-offset)
740 ;;; FIXME: This should be a &KEY argument of ALLOCATE-SYMBOL.
741 (defvar *cold-symbol-allocation-gspace* nil)
743 ;;; Allocate (and initialize) a symbol.
744 (defun allocate-symbol (name)
745 (declare (simple-string name))
746 (let ((symbol (allocate-unboxed-object (or *cold-symbol-allocation-gspace*
749 (1- sb!vm:symbol-size)
750 sb!vm:symbol-header-type)))
751 (write-wordindexed symbol sb!vm:symbol-value-slot *unbound-marker*)
753 (write-wordindexed symbol
754 sb!vm:symbol-hash-slot
755 (make-fixnum-descriptor
756 (1+ (random sb!vm:*target-most-positive-fixnum*))))
757 (write-wordindexed symbol sb!vm:symbol-plist-slot *nil-descriptor*)
758 (write-wordindexed symbol sb!vm:symbol-name-slot
759 (string-to-core name *dynamic*))
760 (write-wordindexed symbol sb!vm:symbol-package-slot *nil-descriptor*)
763 ;;; Set the cold symbol value of SYMBOL-OR-SYMBOL-DES, which can be either a
764 ;;; descriptor of a cold symbol or (in an abbreviation for the
765 ;;; most common usage pattern) an ordinary symbol, which will be
766 ;;; automatically cold-interned.
767 (declaim (ftype (function ((or descriptor symbol) descriptor)) cold-set))
768 (defun cold-set (symbol-or-symbol-des value)
769 (let ((symbol-des (etypecase symbol-or-symbol-des
770 (descriptor symbol-or-symbol-des)
771 (symbol (cold-intern symbol-or-symbol-des)))))
772 (write-wordindexed symbol-des sb!vm:symbol-value-slot value)))
774 ;;;; layouts and type system pre-initialization
776 ;;; Since we want to be able to dump structure constants and
777 ;;; predicates with reference layouts, we need to create layouts at
778 ;;; cold-load time. We use the name to intern layouts by, and dump a
779 ;;; list of all cold layouts in *!INITIAL-LAYOUTS* so that type system
780 ;;; initialization can find them. The only thing that's tricky [sic --
781 ;;; WHN 19990816] is initializing layout's layout, which must point to
784 ;;; a map from class names to lists of
785 ;;; `(,descriptor ,name ,length ,inherits ,depth)
786 ;;; KLUDGE: It would be more understandable and maintainable to use
787 ;;; DEFSTRUCT (:TYPE LIST) here. -- WHN 19990823
788 (defvar *cold-layouts* (make-hash-table :test 'equal))
790 ;;; a map from DESCRIPTOR-BITS of cold layouts to the name, for inverting
792 (defvar *cold-layout-names* (make-hash-table :test 'eql))
794 ;;; FIXME: *COLD-LAYOUTS* and *COLD-LAYOUT-NAMES* should be
795 ;;; initialized by binding in GENESIS.
797 ;;; the descriptor for layout's layout (needed when making layouts)
798 (defvar *layout-layout*)
800 ;;; FIXME: This information should probably be pulled out of the
801 ;;; cross-compiler's tables at genesis time instead of inserted by
802 ;;; hand here as a bare numeric constant.
803 (defconstant target-layout-length 16)
805 ;;; Return a list of names created from the cold layout INHERITS data
807 (defun listify-cold-inherits (x)
808 (let ((len (descriptor-fixnum (read-wordindexed x
809 sb!vm:vector-length-slot))))
812 (let* ((des (read-wordindexed x (+ sb!vm:vector-data-offset index)))
813 (found (gethash (descriptor-bits des) *cold-layout-names*)))
816 (error "unknown descriptor at index ~S (bits = ~8,'0X)"
818 (descriptor-bits des)))))
821 (declaim (ftype (function (symbol descriptor descriptor descriptor) descriptor)
823 (defun make-cold-layout (name length inherits depthoid)
824 (let ((result (allocate-boxed-object *dynamic*
825 ;; KLUDGE: Why 1+? -- WHN 19990901
826 (1+ target-layout-length)
827 sb!vm:instance-pointer-type)))
829 (make-other-immediate-descriptor target-layout-length
830 sb!vm:instance-header-type))
832 ;; KLUDGE: The offsets into LAYOUT below should probably be pulled out
833 ;; of the cross-compiler's tables at genesis time instead of inserted
834 ;; by hand as bare numeric constants. -- WHN ca. 19990901
836 ;; Set slot 0 = the layout of the layout.
837 (write-wordindexed result sb!vm:instance-slots-offset *layout-layout*)
839 ;; Set the immediately following slots = CLOS hash values.
841 ;; Note: CMU CL didn't set these in genesis, but instead arranged
842 ;; for them to be set at cold init time. That resulted in slightly
843 ;; kludgy-looking code, but there were at least two things to be
845 ;; 1. It put the hash values under the control of the target Lisp's
846 ;; RANDOM function, so that CLOS behavior would be nearly
847 ;; deterministic (instead of depending on the implementation of
848 ;; RANDOM in the cross-compilation host, and the state of its
849 ;; RNG when genesis begins).
850 ;; 2. It automatically ensured that all hash values in the target Lisp
851 ;; were part of the same sequence, so that we didn't have to worry
852 ;; about the possibility of the first hash value set in genesis
853 ;; being precisely equal to the some hash value set in cold init time
854 ;; (because the target Lisp RNG has advanced to precisely the same
855 ;; state that the host Lisp RNG was in earlier).
856 ;; Point 1 should not be an issue in practice because of the way we do our
857 ;; build procedure in two steps, so that the SBCL that we end up with has
858 ;; been created by another SBCL (whose RNG is under our control).
859 ;; Point 2 is more of an issue. If ANSI had provided a way to feed
860 ;; entropy into an RNG, we would have no problem: we'd just feed
861 ;; some specialized genesis-time-only pattern into the RNG state
862 ;; before using it. However, they didn't, so we have a slight
863 ;; problem. We address it by generating the hash values using a
864 ;; different algorithm than we use in ordinary operation.
865 (dotimes (i sb!kernel:layout-clos-hash-length)
866 (let (;; The expression here is pretty arbitrary, we just want
867 ;; to make sure that it's not something which is (1)
868 ;; evenly distributed and (2) not foreordained to arise in
869 ;; the target Lisp's (RANDOM-LAYOUT-CLOS-HASH) sequence
870 ;; and show up as the CLOS-HASH value of some other
873 ;; FIXME: This expression here can generate a zero value,
874 ;; and the CMU CL code goes out of its way to generate
875 ;; strictly positive values (even though the field is
876 ;; declared as an INDEX). Check that it's really OK to
877 ;; have zero values in the CLOS-HASH slots.
878 (hash-value (mod (logxor (logand (random-layout-clos-hash) 15253)
879 (logandc2 (random-layout-clos-hash) 15253)
881 ;; (The MOD here is defensive programming
882 ;; to make sure we never write an
883 ;; out-of-range value even if some joker
884 ;; sets LAYOUT-CLOS-HASH-MAX to other
885 ;; than 2^n-1 at some time in the
887 (1+ sb!kernel:layout-clos-hash-max))))
888 (write-wordindexed result
889 (+ i sb!vm:instance-slots-offset 1)
890 (make-fixnum-descriptor hash-value))))
892 ;; Set other slot values.
893 (let ((base (+ sb!vm:instance-slots-offset
894 sb!kernel:layout-clos-hash-length
896 ;; (Offset 0 is CLASS, "the class this is a layout for", which
897 ;; is uninitialized at this point.)
898 (write-wordindexed result (+ base 1) *nil-descriptor*) ; marked invalid
899 (write-wordindexed result (+ base 2) inherits)
900 (write-wordindexed result (+ base 3) depthoid)
901 (write-wordindexed result (+ base 4) length)
902 (write-wordindexed result (+ base 5) *nil-descriptor*) ; info
903 (write-wordindexed result (+ base 6) *nil-descriptor*)) ; pure
905 (setf (gethash name *cold-layouts*)
908 (descriptor-fixnum length)
909 (listify-cold-inherits inherits)
910 (descriptor-fixnum depthoid)))
911 (setf (gethash (descriptor-bits result) *cold-layout-names*) name)
915 (defun initialize-layouts ()
917 (clrhash *cold-layouts*)
919 ;; We initially create the layout of LAYOUT itself with NIL as the LAYOUT and
921 (setq *layout-layout* *nil-descriptor*)
922 (setq *layout-layout*
923 (make-cold-layout 'layout
924 (number-to-core target-layout-length)
926 ;; FIXME: hard-coded LAYOUT-DEPTHOID of LAYOUT..
928 (write-wordindexed *layout-layout*
929 sb!vm:instance-slots-offset
932 ;; Then we create the layouts that we'll need to make a correct INHERITS
933 ;; vector for the layout of LAYOUT itself..
935 ;; FIXME: The various LENGTH and DEPTHOID numbers should be taken from
936 ;; the compiler's tables, not set by hand.
943 (make-cold-layout 'instance
945 (vector-in-core t-layout)
948 (make-cold-layout 'structure-object
950 (vector-in-core t-layout i-layout)
953 (make-cold-layout 'structure!object
955 (vector-in-core t-layout i-layout so-layout)
957 (layout-inherits (vector-in-core t-layout
962 ;; ..and return to backpatch the layout of LAYOUT.
963 (setf (fourth (gethash 'layout *cold-layouts*))
964 (listify-cold-inherits layout-inherits))
965 (write-wordindexed *layout-layout*
966 ;; FIXME: hardcoded offset into layout struct
967 (+ sb!vm:instance-slots-offset
968 layout-clos-hash-length
973 ;;;; interning symbols in the cold image
975 ;;; In order to avoid having to know about the package format, we
976 ;;; build a data structure in *COLD-PACKAGE-SYMBOLS* that holds all
977 ;;; interned symbols along with info about their packages. The data
978 ;;; structure is a list of sublists, where the sublists have the
979 ;;; following format:
980 ;;; (<make-package-arglist>
981 ;;; <internal-symbols>
982 ;;; <external-symbols>
983 ;;; <imported-internal-symbols>
984 ;;; <imported-external-symbols>
985 ;;; <shadowing-symbols>)
987 ;;; KLUDGE: It would be nice to implement the sublists as instances of
988 ;;; a DEFSTRUCT (:TYPE LIST). (They'd still be lists, but at least we'd be
989 ;;; using mnemonically-named operators to access them, instead of trying
990 ;;; to remember what THIRD and FIFTH mean, and hoping that we never
991 ;;; need to change the list layout..) -- WHN 19990825
993 ;;; an alist from packages to lists of that package's symbols to be dumped
994 (defvar *cold-package-symbols*)
995 (declaim (type list *cold-package-symbols*))
997 ;;; a map from descriptors to symbols, so that we can back up. The key is the
998 ;;; address in the target core.
999 (defvar *cold-symbols*)
1000 (declaim (type hash-table *cold-symbols*))
1002 ;;; Return a handle on an interned symbol. If necessary allocate the
1003 ;;; symbol and record which package the symbol was referenced in. When
1004 ;;; we allocate the symbol, make sure we record a reference to the
1005 ;;; symbol in the home package so that the package gets set.
1006 (defun cold-intern (symbol &optional (package (symbol-package symbol)))
1008 ;; Anything on the cross-compilation host which refers to the target
1009 ;; machinery through the host SB-XC package can be translated to
1010 ;; something on the target which refers to the same machinery
1011 ;; through the target COMMON-LISP package.
1012 (let ((p (find-package "SB-XC")))
1013 (when (eq package p)
1014 (setf package *cl-package*))
1015 (when (eq (symbol-package symbol) p)
1016 (setf symbol (intern (symbol-name symbol) *cl-package*))))
1018 (let (;; Information about each cold-interned symbol is stored
1019 ;; in COLD-INTERN-INFO.
1020 ;; (CAR COLD-INTERN-INFO) = descriptor of symbol
1021 ;; (CDR COLD-INTERN-INFO) = list of packages, other than symbol's
1022 ;; own package, referring to symbol
1023 ;; (*COLD-PACKAGE-SYMBOLS* and *COLD-SYMBOLS* store basically the same
1024 ;; information, but with the mapping running the opposite way.)
1025 (cold-intern-info (get symbol 'cold-intern-info)))
1026 (unless cold-intern-info
1027 (cond ((eq (symbol-package symbol) package)
1028 (let ((handle (allocate-symbol (symbol-name symbol))))
1029 (setf (gethash (descriptor-bits handle) *cold-symbols*) symbol)
1030 (when (eq package *keyword-package*)
1031 (cold-set handle handle))
1032 (setq cold-intern-info
1033 (setf (get symbol 'cold-intern-info) (cons handle nil)))))
1035 (cold-intern symbol)
1036 (setq cold-intern-info (get symbol 'cold-intern-info)))))
1037 (unless (or (null package)
1038 (member package (cdr cold-intern-info)))
1039 (push package (cdr cold-intern-info))
1040 (let* ((old-cps-entry (assoc package *cold-package-symbols*))
1041 (cps-entry (or old-cps-entry
1042 (car (push (list package)
1043 *cold-package-symbols*)))))
1044 (unless old-cps-entry
1045 (/show "created *COLD-PACKAGE-SYMBOLS* entry for" package symbol))
1046 (push symbol (rest cps-entry))))
1047 (car cold-intern-info)))
1049 ;;; Construct and return a value for use as *NIL-DESCRIPTOR*.
1050 (defun make-nil-descriptor ()
1051 (let* ((des (allocate-unboxed-object
1056 (result (make-descriptor (descriptor-high des)
1057 (+ (descriptor-low des)
1058 (* 2 sb!vm:word-bytes)
1059 (- sb!vm:list-pointer-type
1060 sb!vm:other-pointer-type)))))
1061 (write-wordindexed des
1063 (make-other-immediate-descriptor
1065 sb!vm:symbol-header-type))
1066 (write-wordindexed des
1067 (+ 1 sb!vm:symbol-value-slot)
1069 (write-wordindexed des
1070 (+ 2 sb!vm:symbol-value-slot)
1072 (write-wordindexed des
1073 (+ 1 sb!vm:symbol-plist-slot)
1075 (write-wordindexed des
1076 (+ 1 sb!vm:symbol-name-slot)
1077 ;; This is *DYNAMIC*, and DES is *STATIC*,
1078 ;; because that's the way CMU CL did it; I'm
1079 ;; not sure whether there's an underlying
1080 ;; reason. -- WHN 1990826
1081 (string-to-core "NIL" *dynamic*))
1082 (write-wordindexed des
1083 (+ 1 sb!vm:symbol-package-slot)
1085 (setf (get nil 'cold-intern-info)
1090 ;;; Since the initial symbols must be allocated before we can intern
1091 ;;; anything else, we intern those here. We also set the value of T.
1092 (defun initialize-non-nil-symbols ()
1094 "Initialize the cold load symbol-hacking data structures."
1095 (let ((*cold-symbol-allocation-gspace* *static*))
1096 ;; Intern the others.
1097 (dolist (symbol sb!vm:*static-symbols*)
1098 (let* ((des (cold-intern symbol))
1099 (offset-wanted (sb!vm:static-symbol-offset symbol))
1100 (offset-found (- (descriptor-low des)
1101 (descriptor-low *nil-descriptor*))))
1102 (unless (= offset-wanted offset-found)
1103 ;; FIXME: should be fatal
1104 (warn "Offset from ~S to ~S is ~D, not ~D"
1109 ;; Establish the value of T.
1110 (let ((t-symbol (cold-intern t)))
1111 (cold-set t-symbol t-symbol))))
1113 ;;; a helper function for FINISH-SYMBOLS: Return a cold alist suitable
1114 ;;; to be stored in *!INITIAL-LAYOUTS*.
1115 (defun cold-list-all-layouts ()
1116 (let ((result *nil-descriptor*))
1117 (maphash (lambda (key stuff)
1118 (cold-push (cold-cons (cold-intern key)
1124 ;;; Establish initial values for magic symbols.
1126 ;;; Scan over all the symbols referenced in each package in
1127 ;;; *COLD-PACKAGE-SYMBOLS* making that for each one there's an
1128 ;;; appropriate entry in the *!INITIAL-SYMBOLS* data structure to
1130 (defun finish-symbols ()
1132 ;; FIXME: Why use SETQ (setting symbol value) instead of just using
1133 ;; the function values for these things?? I.e. why do we need this
1134 ;; section at all? Is it because all the FDEFINITION stuff gets in
1135 ;; the way of reading function values and is too hairy to rely on at
1136 ;; cold boot? FIXME: 5/6 of these are in *STATIC-SYMBOLS* in
1137 ;; parms.lisp, but %HANDLE-FUNCTION-END-BREAKPOINT is not. Why?
1139 (macrolet ((frob (symbol)
1141 (cold-fdefinition-object (cold-intern ',symbol)))))
1143 (frob sb!impl::maybe-gc)
1144 (frob internal-error)
1145 (frob sb!di::handle-breakpoint)
1146 (frob sb!di::handle-function-end-breakpoint)
1147 (frob sb!impl::fdefinition-object))
1149 (cold-set '*current-catch-block* (make-fixnum-descriptor 0))
1150 (cold-set '*current-unwind-protect-block* (make-fixnum-descriptor 0))
1151 (cold-set '*eval-stack-top* (make-fixnum-descriptor 0))
1153 (cold-set '*free-interrupt-context-index* (make-fixnum-descriptor 0))
1155 ;; FIXME: *!INITIAL-LAYOUTS* should be exported from SB!KERNEL, or
1156 ;; perhaps from SB-LD.
1157 (cold-set 'sb!kernel::*!initial-layouts* (cold-list-all-layouts))
1159 (/show "dumping packages" (mapcar #'car *cold-package-symbols*))
1160 (let ((initial-symbols *nil-descriptor*))
1161 (dolist (cold-package-symbols-entry *cold-package-symbols*)
1162 (let* ((cold-package (car cold-package-symbols-entry))
1163 (symbols (cdr cold-package-symbols-entry))
1164 (shadows (package-shadowing-symbols cold-package))
1165 (internal *nil-descriptor*)
1166 (external *nil-descriptor*)
1167 (imported-internal *nil-descriptor*)
1168 (imported-external *nil-descriptor*)
1169 (shadowing *nil-descriptor*))
1170 (/show "dumping" cold-package symbols)
1172 ;; FIXME: Add assertions here to make sure that inappropriate stuff
1173 ;; isn't being dumped:
1174 ;; * the CL-USER package
1175 ;; * the SB-COLD package
1176 ;; * any internal symbols in the CL package
1177 ;; * basically any package other than CL, KEYWORD, or the packages
1178 ;; in package-data-list.lisp-expr
1179 ;; and that the structure of the KEYWORD package (e.g. whether
1180 ;; any symbols are internal to it) matches what we want in the
1183 ;; FIXME: It seems possible that by looking at the contents of
1184 ;; packages in the target SBCL we could find which symbols in
1185 ;; package-data-lisp.lisp-expr are now obsolete. (If I
1186 ;; understand correctly, only symbols which actually have
1187 ;; definitions or which are otherwise referred to actually end
1188 ;; up in the target packages.)
1190 (dolist (symbol symbols)
1191 (let ((handle (car (get symbol 'cold-intern-info)))
1192 (imported-p (not (eq (symbol-package symbol) cold-package))))
1193 (multiple-value-bind (found where)
1194 (find-symbol (symbol-name symbol) cold-package)
1195 (unless (and where (eq found symbol))
1196 (error "The symbol ~S is not available in ~S."
1199 (when (memq symbol shadows)
1200 (cold-push handle shadowing))
1202 (:internal (if imported-p
1203 (cold-push handle imported-internal)
1204 (cold-push handle internal)))
1205 (:external (if imported-p
1206 (cold-push handle imported-external)
1207 (cold-push handle external)))))))
1208 (let ((r *nil-descriptor*))
1209 (cold-push shadowing r)
1210 (cold-push imported-external r)
1211 (cold-push imported-internal r)
1212 (cold-push external r)
1213 (cold-push internal r)
1214 (cold-push (make-make-package-args cold-package) r)
1215 ;; FIXME: It would be more space-efficient to use vectors
1216 ;; instead of lists here, and space-efficiency here would be
1217 ;; nice, since it would reduce the peak memory usage in
1218 ;; genesis and cold init.
1219 (cold-push r initial-symbols))))
1220 (cold-set '*!initial-symbols* initial-symbols))
1222 (cold-set '*!initial-fdefn-objects* (list-all-fdefn-objects))
1224 (cold-set '*!reversed-cold-toplevels* *current-reversed-cold-toplevels*)
1228 (cold-set 'sb!vm::*fp-constant-0d0* (number-to-core 0d0))
1229 (cold-set 'sb!vm::*fp-constant-1d0* (number-to-core 1d0))
1230 (cold-set 'sb!vm::*fp-constant-0s0* (number-to-core 0s0))
1231 (cold-set 'sb!vm::*fp-constant-1s0* (number-to-core 1s0))
1234 (cold-set 'sb!vm::*fp-constant-0l0* (number-to-core 0L0))
1235 (cold-set 'sb!vm::*fp-constant-1l0* (number-to-core 1L0))
1236 ;; FIXME: Why is initialization of PI conditional on LONG-FLOAT?
1237 ;; (ditto LG2, LN2, L2E, etc.)
1238 (cold-set 'sb!vm::*fp-constant-pi* (number-to-core pi))
1239 (cold-set 'sb!vm::*fp-constant-l2t* (number-to-core (log 10L0 2L0)))
1240 (cold-set 'sb!vm::*fp-constant-l2e*
1241 (number-to-core (log 2.718281828459045235360287471352662L0 2L0)))
1242 (cold-set 'sb!vm::*fp-constant-lg2* (number-to-core (log 2L0 10L0)))
1243 (cold-set 'sb!vm::*fp-constant-ln2*
1245 (log 2L0 2.718281828459045235360287471352662L0))))
1247 (cold-set 'sb!vm::*SCAVENGE-READ-ONLY-GSPACE* *nil-descriptor*)))
1249 ;;; Make a cold list that can be used as the arg list to MAKE-PACKAGE in order
1250 ;;; to make a package that is similar to PKG.
1251 (defun make-make-package-args (pkg)
1252 (let* ((use *nil-descriptor*)
1253 (cold-nicknames *nil-descriptor*)
1254 (res *nil-descriptor*))
1255 (dolist (u (package-use-list pkg))
1256 (when (assoc u *cold-package-symbols*)
1257 (cold-push (string-to-core (package-name u)) use)))
1258 (let* ((pkg-name (package-name pkg))
1259 ;; Make the package nickname lists for the standard packages
1260 ;; be the minimum specified by ANSI, regardless of what value
1261 ;; the cross-compilation host happens to use.
1262 (warm-nicknames (cond ((string= pkg-name "COMMON-LISP")
1264 ((string= pkg-name "COMMON-LISP-USER")
1266 ((string= pkg-name "KEYWORD")
1268 ;; For packages other than the
1269 ;; standard packages, the nickname
1270 ;; list was specified by our package
1271 ;; setup code, not by properties of
1272 ;; what cross-compilation host we
1273 ;; happened to use, and we can just
1274 ;; propagate it into the target.
1276 (package-nicknames pkg)))))
1277 (dolist (warm-nickname warm-nicknames)
1278 (cold-push (string-to-core warm-nickname) cold-nicknames)))
1280 (cold-push (number-to-core (truncate (package-internal-symbol-count pkg)
1283 (cold-push (cold-intern :internal-symbols) res)
1284 (cold-push (number-to-core (truncate (package-external-symbol-count pkg)
1287 (cold-push (cold-intern :external-symbols) res)
1289 (cold-push cold-nicknames res)
1290 (cold-push (cold-intern :nicknames) res)
1293 (cold-push (cold-intern :use) res)
1295 (cold-push (string-to-core (package-name pkg)) res)
1298 ;;;; fdefinition objects
1300 ;;; a hash table mapping from fdefinition names to descriptors of cold
1301 ;;; objects. Note: Since fdefinition names can be lists like '(SETF
1302 ;;; FOO), and we want to have only one entry per name, this must be an
1303 ;;; 'EQUAL hash table, not the default 'EQL.
1304 (defvar *cold-fdefn-objects*)
1306 (defvar *cold-fdefn-gspace* nil)
1308 ;;; Given a cold representation of an FDEFN name, return a warm representation.
1310 ;;; Note: Despite the name, this actually has little to do with
1311 ;;; FDEFNs, it's just a function for warming up values, and the only
1312 ;;; values it knows how to warm up are symbols and lists. (The
1313 ;;; connection to FDEFNs is that symbols and lists are the only
1314 ;;; possible names for functions.)
1315 (declaim (ftype (function (descriptor) (or symbol list)) warm-fdefn-name))
1316 (defun warm-fdefn-name (des)
1317 (ecase (descriptor-lowtag des)
1318 (#.sb!vm:list-pointer-type ; FIXME: no #.
1319 (if (= (descriptor-bits des) (descriptor-bits *nil-descriptor*))
1321 ;; FIXME: If we cold-intern this again, we might get a different
1322 ;; name. Check to make sure that any hash tables along the way
1323 ;; are 'EQUAL not 'EQL.
1324 (cons (warm-fdefn-name (read-wordindexed des sb!vm:cons-car-slot))
1325 (warm-fdefn-name (read-wordindexed des sb!vm:cons-cdr-slot)))))
1326 (#.sb!vm:other-pointer-type ; FIXME: no #.
1327 (or (gethash (descriptor-bits des) *cold-symbols*)
1328 (descriptor-bits des)))))
1330 (defun cold-fdefinition-object (cold-name &optional leave-fn-raw)
1331 (declare (type descriptor cold-name))
1332 (let ((warm-name (warm-fdefn-name cold-name)))
1333 (or (gethash warm-name *cold-fdefn-objects*)
1334 (let ((fdefn (allocate-boxed-object (or *cold-fdefn-gspace* *dynamic*)
1335 (1- sb!vm:fdefn-size)
1336 sb!vm:other-pointer-type)))
1338 (setf (gethash warm-name *cold-fdefn-objects*) fdefn)
1339 (write-memory fdefn (make-other-immediate-descriptor
1340 (1- sb!vm:fdefn-size) sb!vm:fdefn-type))
1341 (write-wordindexed fdefn sb!vm:fdefn-name-slot cold-name)
1342 (unless leave-fn-raw
1343 (write-wordindexed fdefn sb!vm:fdefn-function-slot
1345 (write-wordindexed fdefn
1346 sb!vm:fdefn-raw-addr-slot
1347 (make-random-descriptor
1348 (lookup-foreign-symbol "undefined_tramp"))))
1351 (defun cold-fset (cold-name defn)
1352 (declare (type descriptor cold-name))
1353 (let ((fdefn (cold-fdefinition-object cold-name t))
1354 (type (logand (descriptor-low (read-memory defn)) sb!vm:type-mask)))
1355 (write-wordindexed fdefn sb!vm:fdefn-function-slot defn)
1356 (write-wordindexed fdefn
1357 sb!vm:fdefn-raw-addr-slot
1359 (#.sb!vm:function-header-type
1363 (make-random-descriptor
1364 (+ (logandc2 (descriptor-bits defn)
1366 (ash sb!vm:function-code-offset
1367 sb!vm:word-shift))))
1368 (#.sb!vm:closure-header-type
1369 (make-random-descriptor
1370 (lookup-foreign-symbol "closure_tramp")))))
1373 (defun initialize-static-fns ()
1374 (let ((*cold-fdefn-gspace* *static*))
1375 (dolist (sym sb!vm:*static-functions*)
1376 (let* ((fdefn (cold-fdefinition-object (cold-intern sym)))
1377 (offset (- (+ (- (descriptor-low fdefn)
1378 sb!vm:other-pointer-type)
1379 (* sb!vm:fdefn-raw-addr-slot sb!vm:word-bytes))
1380 (descriptor-low *nil-descriptor*)))
1381 (desired (sb!vm:static-function-offset sym)))
1382 (unless (= offset desired)
1383 ;; FIXME: should be fatal
1384 (warn "Offset from FDEFN ~S to ~S is ~D, not ~D."
1385 sym nil offset desired))))))
1387 (defun list-all-fdefn-objects ()
1388 (let ((result *nil-descriptor*))
1389 (maphash #'(lambda (key value)
1390 (declare (ignore key))
1391 (cold-push value result))
1392 *cold-fdefn-objects*)
1395 ;;;; fixups and related stuff
1397 ;;; an EQUAL hash table
1398 (defvar *cold-foreign-symbol-table*)
1399 (declaim (type hash-table *cold-foreign-symbol-table*))
1401 (defun load-foreign-symbol-table (filename)
1402 (with-open-file (file filename)
1404 (let ((line (read-line file nil nil)))
1407 ;; UNIX symbol tables might have tabs in them, and tabs are
1408 ;; not in Common Lisp STANDARD-CHAR, so there seems to be no
1409 ;; nice portable way to deal with them within Lisp, alas.
1410 ;; Fortunately, it's easy to use UNIX command line tools like
1411 ;; sed to remove the problem, so it's not too painful for us
1412 ;; to push responsibility for converting tabs to spaces out to
1415 ;; Other non-STANDARD-CHARs are problematic for the same reason.
1416 ;; Make sure that there aren't any..
1417 (let ((ch (find-if (lambda (char)
1418 (not (typep char 'standard-char)))
1421 (error "non-STANDARD-CHAR ~S found in foreign symbol table:~%~S"
1424 (setf line (string-trim '(#\space) line))
1425 (let ((p1 (position #\space line :from-end nil))
1426 (p2 (position #\space line :from-end t)))
1427 (if (not (and p1 p2 (< p1 p2)))
1428 ;; KLUDGE: It's too messy to try to understand all
1429 ;; possible output from nm, so we just punt the lines we
1430 ;; don't recognize. We realize that there's some chance
1431 ;; that might get us in trouble someday, so we warn
1433 (warn "ignoring unrecognized line ~S in ~A" line filename)
1434 (multiple-value-bind (value name)
1435 (if (string= "0x" line :end2 2)
1436 (values (parse-integer line :start 2 :end p1 :radix 16)
1437 (subseq line (1+ p2)))
1438 (values (parse-integer line :end p1 :radix 16)
1439 (subseq line (1+ p2))))
1440 (multiple-value-bind (old-value found)
1441 (gethash name *cold-foreign-symbol-table*)
1443 (not (= old-value value)))
1444 (warn "redefining ~S from #X~X to #X~X"
1445 name old-value value)))
1446 (setf (gethash name *cold-foreign-symbol-table*) value))))))
1449 ;;; FIXME: the relation between #'lookup-foreign-symbol and
1450 ;;; #'lookup-maybe-prefix-foreign-symbol seems more than slightly
1453 (defun lookup-foreign-symbol (name)
1456 #!+linux #(;; FIXME: How many of these are actually
1457 ;; needed? The first four are taken from rather
1458 ;; disorganized CMU CL code, which could easily
1459 ;; have had redundant values in it..
1464 ;; ..and the fifth seems to match most
1465 ;; actual symbols, at least in RedHat 6.2.
1467 #!+freebsd #("" "ldso_stub__")
1469 (or (some (lambda (prefix)
1470 (gethash (concatenate 'string prefix name)
1471 *cold-foreign-symbol-table*
1474 *foreign-symbol-placeholder-value*
1476 (format *error-output* "~&The foreign symbol table is:~%")
1477 (maphash (lambda (k v)
1478 (format *error-output* "~&~S = #X~8X~%" k v))
1479 *cold-foreign-symbol-table*)
1480 (format *error-output* "~&The prefix table is: ~S~%" prefixes)
1481 (error "The foreign symbol ~S is undefined." name))))
1482 #!-(or x86 alpha) (error "non-x86/alpha unsupported in SBCL (but see old CMU CL code)"))
1484 (defvar *cold-assembler-routines*)
1486 (defvar *cold-assembler-fixups*)
1488 (defun record-cold-assembler-routine (name address)
1489 (/xhow "in RECORD-COLD-ASSEMBLER-ROUTINE" name address)
1490 (push (cons name address)
1491 *cold-assembler-routines*))
1493 (defun record-cold-assembler-fixup (routine
1498 (push (list routine code-object offset kind)
1499 *cold-assembler-fixups*))
1501 (defun lookup-assembler-reference (symbol)
1502 (let ((value (cdr (assoc symbol *cold-assembler-routines*))))
1503 ;; FIXME: Should this be ERROR instead of WARN?
1505 (warn "Assembler routine ~S not defined." symbol))
1508 ;;; The x86 port needs to store code fixups along with code objects if
1509 ;;; they are to be moved, so fixups for code objects in the dynamic
1510 ;;; heap need to be noted.
1512 (defvar *load-time-code-fixups*)
1515 (defun note-load-time-code-fixup (code-object offset value kind)
1516 ;; If CODE-OBJECT might be moved
1517 (when (= (gspace-identifier (descriptor-intuit-gspace code-object))
1519 ;; FIXME: pushed thing should be a structure, not just a list
1520 (push (list code-object offset value kind) *load-time-code-fixups*))
1524 (defun output-load-time-code-fixups ()
1525 (dolist (fixups *load-time-code-fixups*)
1526 (let ((code-object (first fixups))
1527 (offset (second fixups))
1528 (value (third fixups))
1529 (kind (fourth fixups)))
1530 (cold-push (cold-cons
1531 (cold-intern :load-time-code-fixup)
1535 (number-to-core offset)
1537 (number-to-core value)
1540 *nil-descriptor*)))))
1541 *current-reversed-cold-toplevels*))))
1543 ;;; Given a pointer to a code object and an offset relative to the
1544 ;;; tail of the code object's header, return an offset relative to the
1545 ;;; (beginning of the) code object.
1547 ;;; FIXME: It might be clearer to reexpress
1548 ;;; (LET ((X (CALC-OFFSET CODE-OBJECT OFFSET0))) ..)
1550 ;;; (LET ((X (+ OFFSET0 (CODE-OBJECT-HEADER-N-BYTES CODE-OBJECT)))) ..).
1551 (declaim (ftype (function (descriptor sb!vm:word)) calc-offset))
1552 (defun calc-offset (code-object offset-from-tail-of-header)
1553 (let* ((header (read-memory code-object))
1554 (header-n-words (ash (descriptor-bits header) (- sb!vm:type-bits)))
1555 (header-n-bytes (ash header-n-words sb!vm:word-shift))
1556 (result (+ offset-from-tail-of-header header-n-bytes)))
1559 (declaim (ftype (function (descriptor sb!vm:word sb!vm:word keyword))
1561 (defun do-cold-fixup (code-object after-header value kind)
1562 (let* ((offset-within-code-object (calc-offset code-object after-header))
1563 (gspace-bytes (descriptor-bytes code-object))
1564 (gspace-byte-offset (+ (descriptor-byte-offset code-object)
1565 offset-within-code-object))
1566 (gspace-byte-address (gspace-byte-address
1567 (descriptor-gspace code-object))))
1568 (ecase sb!c:*backend-fasl-file-implementation*
1569 ;; See CMUCL source for other formerly-supported architectures
1570 ;; (and note that you have to rewrite them to use vector-ref unstead
1575 (assert (zerop (ldb (byte 2 0) value)))
1576 #+nil ;; was commented out in cmucl source too. Don't know what
1577 ;; it does -dan 2001.05.03
1578 (setf (sap-ref-16 sap 0)
1579 (logior (sap-ref-16 sap 0) (ldb (byte 14 0) (ash value -2)))))
1581 (let* ((value (if (logbitp 15 value) (+ value (ash 1 16)) value))
1582 (value (if (logbitp 31 value) (+ value (ash 1 32)) value))
1583 (value (if (logbitp 47 value) (+ value (ash 1 48)) value)))
1584 (setf (byte-vector-ref-8 gspace-bytes gspace-byte-offset)
1585 (ldb (byte 8 48) value)
1586 (byte-vector-ref-8 gspace-bytes (1+ gspace-byte-offset))
1587 (ldb (byte 8 56) value))))
1589 (let* ((value (if (logbitp 15 value) (+ value (ash 1 16)) value))
1590 (value (if (logbitp 31 value) (+ value (ash 1 32)) value)))
1591 (setf (byte-vector-ref-8 gspace-bytes gspace-byte-offset)
1592 (ldb (byte 8 32) value)
1593 (byte-vector-ref-8 gspace-bytes (1+ gspace-byte-offset))
1594 (ldb (byte 8 40) value))))
1596 (let ((value (if (logbitp 15 value) (+ value (ash 1 16)) value)))
1597 (setf (byte-vector-ref-8 gspace-bytes gspace-byte-offset)
1598 (ldb (byte 8 16) value)
1599 (byte-vector-ref-8 gspace-bytes (1+ gspace-byte-offset))
1600 (ldb (byte 8 24) value))))
1602 (setf (byte-vector-ref-8 gspace-bytes gspace-byte-offset)
1603 (ldb (byte 8 0) value)
1604 (byte-vector-ref-8 gspace-bytes (1+ gspace-byte-offset))
1605 (ldb (byte 8 8) value)))))
1607 (let* ((un-fixed-up (byte-vector-ref-32 gspace-bytes
1608 gspace-byte-offset))
1609 (code-object-start-addr (logandc2 (descriptor-bits code-object)
1610 sb!vm:lowtag-mask)))
1611 (assert (= code-object-start-addr
1612 (+ gspace-byte-address
1613 (descriptor-byte-offset code-object))))
1616 (let ((fixed-up (+ value un-fixed-up)))
1617 (setf (byte-vector-ref-32 gspace-bytes gspace-byte-offset)
1619 ;; comment from CMU CL sources:
1621 ;; Note absolute fixups that point within the object.
1622 ;; KLUDGE: There seems to be an implicit assumption in
1623 ;; the old CMU CL code here, that if it doesn't point
1624 ;; before the object, it must point within the object
1625 ;; (not beyond it). It would be good to add an
1626 ;; explanation of why that's true, or an assertion that
1627 ;; it's really true, or both.
1628 (unless (< fixed-up code-object-start-addr)
1629 (note-load-time-code-fixup code-object
1633 (:relative ; (used for arguments to X86 relative CALL instruction)
1634 (let ((fixed-up (- (+ value un-fixed-up)
1637 sb!vm:word-bytes))) ; length of CALL argument
1638 (setf (byte-vector-ref-32 gspace-bytes gspace-byte-offset)
1640 ;; Note relative fixups that point outside the code
1641 ;; object, which is to say all relative fixups, since
1642 ;; relative addressing within a code object never needs
1644 (note-load-time-code-fixup code-object
1650 (defun resolve-assembler-fixups ()
1651 (dolist (fixup *cold-assembler-fixups*)
1652 (let* ((routine (car fixup))
1653 (value (lookup-assembler-reference routine)))
1655 (do-cold-fixup (second fixup) (third fixup) value (fourth fixup))))))
1657 (defun linkage-info-to-core ()
1658 (let ((result *nil-descriptor*))
1659 (maphash #'(lambda (symbol value)
1660 (cold-push (cold-cons (string-to-core symbol)
1661 (number-to-core value))
1663 *cold-foreign-symbol-table*)
1664 (cold-set (cold-intern '*!initial-foreign-symbols*) result))
1665 (let ((result *nil-descriptor*))
1666 (dolist (rtn *cold-assembler-routines*)
1667 (cold-push (cold-cons (cold-intern (car rtn))
1668 (number-to-core (cdr rtn)))
1670 (cold-set (cold-intern '*!initial-assembler-routines*) result)))
1672 ;;;; general machinery for cold-loading FASL files
1674 (defvar *cold-fop-functions* (replace (make-array 256) *fop-functions*)
1676 "FOP functions for cold loading")
1678 (defvar *normal-fop-functions*)
1680 ;;; Cause a fop to have a special definition for cold load.
1682 ;;; This is similar to DEFINE-FOP, but unlike DEFINE-FOP, this version
1683 ;;; (1) looks up the code for this name (created by a previous
1684 ;; DEFINE-FOP) instead of creating a code, and
1685 ;;; (2) stores its definition in the *COLD-FOP-FUNCTIONS* vector,
1686 ;;; instead of storing in the *FOP-FUNCTIONS* vector.
1687 (defmacro define-cold-fop ((name &optional (pushp t)) &rest forms)
1688 (aver (member pushp '(nil t :nope)))
1689 (let ((code (get name 'fop-code))
1690 (fname (symbolicate "COLD-" name)))
1692 (error "~S is not a defined FOP." name))
1695 ,@(if (eq pushp :nope)
1697 `((with-fop-stack ,pushp ,@forms))))
1698 (setf (svref *cold-fop-functions* ,code) #',fname))))
1700 (defmacro clone-cold-fop ((name &optional (pushp t)) (small-name) &rest forms)
1701 (aver (member pushp '(nil t :nope)))
1703 (macrolet ((clone-arg () '(read-arg 4)))
1704 (define-cold-fop (,name ,pushp) ,@forms))
1705 (macrolet ((clone-arg () '(read-arg 1)))
1706 (define-cold-fop (,small-name ,pushp) ,@forms))))
1708 ;;; Cause a fop to be undefined in cold load.
1709 (defmacro not-cold-fop (name)
1710 `(define-cold-fop (,name)
1711 (error "The fop ~S is not supported in cold load." ',name)))
1713 ;;; COLD-LOAD loads stuff into the core image being built by calling
1714 ;;; LOAD-AS-FASL with the fop function table rebound to a table of cold
1715 ;;; loading functions.
1716 (defun cold-load (filename)
1718 "Load the file named by FILENAME into the cold load image being built."
1719 (let* ((*normal-fop-functions* *fop-functions*)
1720 (*fop-functions* *cold-fop-functions*)
1721 (*cold-load-filename* (etypecase filename
1723 (pathname (namestring filename)))))
1724 (with-open-file (s filename :element-type '(unsigned-byte 8))
1725 (load-as-fasl s nil nil))))
1727 ;;;; miscellaneous cold fops
1729 (define-cold-fop (fop-misc-trap) *unbound-marker*)
1731 (define-cold-fop (fop-character)
1732 (make-character-descriptor (read-arg 3)))
1733 (define-cold-fop (fop-short-character)
1734 (make-character-descriptor (read-arg 1)))
1736 (define-cold-fop (fop-empty-list) *nil-descriptor*)
1737 (define-cold-fop (fop-truth) (cold-intern t))
1739 (define-cold-fop (fop-normal-load :nope)
1740 (setq *fop-functions* *normal-fop-functions*))
1742 (define-fop (fop-maybe-cold-load 82 :nope)
1743 (when *cold-load-filename*
1744 (setq *fop-functions* *cold-fop-functions*)))
1746 (define-cold-fop (fop-maybe-cold-load :nope))
1748 (clone-cold-fop (fop-struct)
1750 (let* ((size (clone-arg))
1751 (result (allocate-boxed-object *dynamic*
1753 sb!vm:instance-pointer-type)))
1754 (write-memory result (make-other-immediate-descriptor
1756 sb!vm:instance-header-type))
1757 (do ((index (1- size) (1- index)))
1759 (declare (fixnum index))
1760 (write-wordindexed result
1761 (+ index sb!vm:instance-slots-offset)
1765 (define-cold-fop (fop-layout)
1766 (let* ((length-des (pop-stack))
1767 (depthoid-des (pop-stack))
1768 (cold-inherits (pop-stack))
1770 (old (gethash name *cold-layouts*)))
1771 (declare (type descriptor length-des depthoid-des cold-inherits))
1772 (declare (type symbol name))
1773 ;; If a layout of this name has been defined already
1775 ;; Enforce consistency between the previous definition and the
1776 ;; current definition, then return the previous definition.
1778 ;; FIXME: This would be more maintainable if we used
1779 ;; DEFSTRUCT (:TYPE LIST) to define COLD-LAYOUT. -- WHN 19990825
1780 (old-layout-descriptor
1786 (declare (type descriptor old-layout-descriptor))
1787 (declare (type index old-length))
1788 (declare (type fixnum old-depthoid))
1789 (declare (type list old-inherits-list))
1790 (aver (eq name old-name))
1791 (let ((length (descriptor-fixnum length-des))
1792 (inherits-list (listify-cold-inherits cold-inherits))
1793 (depthoid (descriptor-fixnum depthoid-des)))
1794 (unless (= length old-length)
1795 (error "cold loading a reference to class ~S when the compile~%~
1796 time length was ~S and current length is ~S"
1800 (unless (equal inherits-list old-inherits-list)
1801 (error "cold loading a reference to class ~S when the compile~%~
1802 time inherits were ~S~%~
1803 and current inherits are ~S"
1807 (unless (= depthoid old-depthoid)
1808 (error "cold loading a reference to class ~S when the compile~%~
1809 time inheritance depthoid was ~S and current inheritance~%~
1814 old-layout-descriptor)
1815 ;; Make a new definition from scratch.
1816 (make-cold-layout name length-des cold-inherits depthoid-des))))
1818 ;;;; cold fops for loading symbols
1820 ;;; Load a symbol SIZE characters long from *FASL-FILE* and intern
1821 ;;; that symbol in PACKAGE.
1822 (defun cold-load-symbol (size package)
1823 (let ((string (make-string size)))
1824 (read-string-as-bytes *fasl-file* string)
1825 (cold-intern (intern string package) package)))
1827 (macrolet ((frob (name pname-len package-len)
1828 `(define-cold-fop (,name)
1829 (let ((index (read-arg ,package-len)))
1831 (cold-load-symbol (read-arg ,pname-len)
1832 (svref *current-fop-table* index)))))))
1833 (frob fop-symbol-in-package-save 4 4)
1834 (frob fop-small-symbol-in-package-save 1 4)
1835 (frob fop-symbol-in-byte-package-save 4 1)
1836 (frob fop-small-symbol-in-byte-package-save 1 1))
1838 (clone-cold-fop (fop-lisp-symbol-save)
1839 (fop-lisp-small-symbol-save)
1840 (push-fop-table (cold-load-symbol (clone-arg) *cl-package*)))
1842 (clone-cold-fop (fop-keyword-symbol-save)
1843 (fop-keyword-small-symbol-save)
1844 (push-fop-table (cold-load-symbol (clone-arg) *keyword-package*)))
1846 (clone-cold-fop (fop-uninterned-symbol-save)
1847 (fop-uninterned-small-symbol-save)
1848 (let* ((size (clone-arg))
1849 (name (make-string size)))
1850 (read-string-as-bytes *fasl-file* name)
1851 (let ((symbol (allocate-symbol name)))
1852 (push-fop-table symbol))))
1854 ;;;; cold fops for loading lists
1856 ;;; Make a list of the top LENGTH things on the fop stack. The last
1857 ;;; cdr of the list is set to LAST.
1858 (defmacro cold-stack-list (length last)
1859 `(do* ((index ,length (1- index))
1860 (result ,last (cold-cons (pop-stack) result)))
1861 ((= index 0) result)
1862 (declare (fixnum index))))
1864 (define-cold-fop (fop-list)
1865 (cold-stack-list (read-arg 1) *nil-descriptor*))
1866 (define-cold-fop (fop-list*)
1867 (cold-stack-list (read-arg 1) (pop-stack)))
1868 (define-cold-fop (fop-list-1)
1869 (cold-stack-list 1 *nil-descriptor*))
1870 (define-cold-fop (fop-list-2)
1871 (cold-stack-list 2 *nil-descriptor*))
1872 (define-cold-fop (fop-list-3)
1873 (cold-stack-list 3 *nil-descriptor*))
1874 (define-cold-fop (fop-list-4)
1875 (cold-stack-list 4 *nil-descriptor*))
1876 (define-cold-fop (fop-list-5)
1877 (cold-stack-list 5 *nil-descriptor*))
1878 (define-cold-fop (fop-list-6)
1879 (cold-stack-list 6 *nil-descriptor*))
1880 (define-cold-fop (fop-list-7)
1881 (cold-stack-list 7 *nil-descriptor*))
1882 (define-cold-fop (fop-list-8)
1883 (cold-stack-list 8 *nil-descriptor*))
1884 (define-cold-fop (fop-list*-1)
1885 (cold-stack-list 1 (pop-stack)))
1886 (define-cold-fop (fop-list*-2)
1887 (cold-stack-list 2 (pop-stack)))
1888 (define-cold-fop (fop-list*-3)
1889 (cold-stack-list 3 (pop-stack)))
1890 (define-cold-fop (fop-list*-4)
1891 (cold-stack-list 4 (pop-stack)))
1892 (define-cold-fop (fop-list*-5)
1893 (cold-stack-list 5 (pop-stack)))
1894 (define-cold-fop (fop-list*-6)
1895 (cold-stack-list 6 (pop-stack)))
1896 (define-cold-fop (fop-list*-7)
1897 (cold-stack-list 7 (pop-stack)))
1898 (define-cold-fop (fop-list*-8)
1899 (cold-stack-list 8 (pop-stack)))
1901 ;;;; cold fops for loading vectors
1903 (clone-cold-fop (fop-string)
1905 (let* ((len (clone-arg))
1906 (string (make-string len)))
1907 (read-string-as-bytes *fasl-file* string)
1908 (string-to-core string)))
1910 (clone-cold-fop (fop-vector)
1912 (let* ((size (clone-arg))
1913 (result (allocate-vector-object *dynamic*
1916 sb!vm:simple-vector-type)))
1917 (do ((index (1- size) (1- index)))
1919 (declare (fixnum index))
1920 (write-wordindexed result
1921 (+ index sb!vm:vector-data-offset)
1925 (define-cold-fop (fop-int-vector)
1926 (let* ((len (read-arg 4))
1927 (sizebits (read-arg 1))
1928 (type (case sizebits
1929 (1 sb!vm:simple-bit-vector-type)
1930 (2 sb!vm:simple-array-unsigned-byte-2-type)
1931 (4 sb!vm:simple-array-unsigned-byte-4-type)
1932 (8 sb!vm:simple-array-unsigned-byte-8-type)
1933 (16 sb!vm:simple-array-unsigned-byte-16-type)
1934 (32 sb!vm:simple-array-unsigned-byte-32-type)
1935 (t (error "losing element size: ~D" sizebits))))
1936 (result (allocate-vector-object *dynamic* sizebits len type))
1937 (start (+ (descriptor-byte-offset result)
1938 (ash sb!vm:vector-data-offset sb!vm:word-shift)))
1940 (ceiling (* len sizebits)
1942 (read-sequence-or-die (descriptor-bytes result)
1948 (define-cold-fop (fop-single-float-vector)
1949 (let* ((len (read-arg 4))
1950 (result (allocate-vector-object *dynamic*
1953 sb!vm:simple-array-single-float-type))
1954 (start (+ (descriptor-byte-offset result)
1955 (ash sb!vm:vector-data-offset sb!vm:word-shift)))
1956 (end (+ start (* len sb!vm:word-bytes))))
1957 (read-sequence-or-die (descriptor-bytes result)
1963 (not-cold-fop fop-double-float-vector)
1964 #!+long-float (not-cold-fop fop-long-float-vector)
1965 (not-cold-fop fop-complex-single-float-vector)
1966 (not-cold-fop fop-complex-double-float-vector)
1967 #!+long-float (not-cold-fop fop-complex-long-float-vector)
1969 (define-cold-fop (fop-array)
1970 (let* ((rank (read-arg 4))
1971 (data-vector (pop-stack))
1972 (result (allocate-boxed-object *dynamic*
1973 (+ sb!vm:array-dimensions-offset rank)
1974 sb!vm:other-pointer-type)))
1975 (write-memory result
1976 (make-other-immediate-descriptor rank
1977 sb!vm:simple-array-type))
1978 (write-wordindexed result sb!vm:array-fill-pointer-slot *nil-descriptor*)
1979 (write-wordindexed result sb!vm:array-data-slot data-vector)
1980 (write-wordindexed result sb!vm:array-displacement-slot *nil-descriptor*)
1981 (write-wordindexed result sb!vm:array-displaced-p-slot *nil-descriptor*)
1982 (let ((total-elements 1))
1983 (dotimes (axis rank)
1984 (let ((dim (pop-stack)))
1985 (unless (or (= (descriptor-lowtag dim) sb!vm:even-fixnum-type)
1986 (= (descriptor-lowtag dim) sb!vm:odd-fixnum-type))
1987 (error "non-fixnum dimension? (~S)" dim))
1988 (setf total-elements
1990 (logior (ash (descriptor-high dim)
1991 (- descriptor-low-bits (1- sb!vm:lowtag-bits)))
1992 (ash (descriptor-low dim)
1993 (- 1 sb!vm:lowtag-bits)))))
1994 (write-wordindexed result
1995 (+ sb!vm:array-dimensions-offset axis)
1997 (write-wordindexed result
1998 sb!vm:array-elements-slot
1999 (make-fixnum-descriptor total-elements)))
2002 ;;;; cold fops for loading numbers
2004 (defmacro define-cold-number-fop (fop)
2005 `(define-cold-fop (,fop :nope)
2006 ;; Invoke the ordinary warm version of this fop to push the
2009 ;; Replace the warm fop result with the cold image of the warm
2012 (let ((number (pop-stack)))
2013 (number-to-core number)))))
2015 (define-cold-number-fop fop-single-float)
2016 (define-cold-number-fop fop-double-float)
2017 (define-cold-number-fop fop-integer)
2018 (define-cold-number-fop fop-small-integer)
2019 (define-cold-number-fop fop-word-integer)
2020 (define-cold-number-fop fop-byte-integer)
2021 (define-cold-number-fop fop-complex-single-float)
2022 (define-cold-number-fop fop-complex-double-float)
2025 (define-cold-fop (fop-long-float)
2026 (ecase sb!c:*backend-fasl-file-implementation*
2027 (:x86 ; 80 bit long-float format
2028 (prepare-for-fast-read-byte *fasl-file*
2029 (let* ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits
2030 (1- sb!vm:long-float-size)
2031 sb!vm:long-float-type))
2032 (low-bits (make-random-descriptor (fast-read-u-integer 4)))
2033 (high-bits (make-random-descriptor (fast-read-u-integer 4)))
2034 (exp-bits (make-random-descriptor (fast-read-s-integer 2))))
2035 (done-with-fast-read-byte)
2036 (write-wordindexed des sb!vm:long-float-value-slot low-bits)
2037 (write-wordindexed des (1+ sb!vm:long-float-value-slot) high-bits)
2038 (write-wordindexed des (+ 2 sb!vm:long-float-value-slot) exp-bits)
2040 ;; This was supported in CMU CL, but isn't currently supported in
2043 (#.sb!c:sparc-fasl-file-implementation ; 128 bit long-float format
2044 (prepare-for-fast-read-byte *fasl-file*
2045 (let* ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits
2046 (1- sb!vm:long-float-size)
2047 sb!vm:long-float-type))
2048 (low-bits (make-random-descriptor (fast-read-u-integer 4)))
2049 (mid-bits (make-random-descriptor (fast-read-u-integer 4)))
2050 (high-bits (make-random-descriptor (fast-read-u-integer 4)))
2051 (exp-bits (make-random-descriptor (fast-read-s-integer 4))))
2052 (done-with-fast-read-byte)
2053 (write-wordindexed des sb!vm:long-float-value-slot exp-bits)
2054 (write-wordindexed des (1+ sb!vm:long-float-value-slot) high-bits)
2055 (write-wordindexed des (+ 2 sb!vm:long-float-value-slot) mid-bits)
2056 (write-wordindexed des (+ 3 sb!vm:long-float-value-slot) low-bits)
2060 (define-cold-fop (fop-complex-long-float)
2061 (ecase sb!c:*backend-fasl-file-implementation*
2062 (:x86 ; 80 bit long-float format
2063 (prepare-for-fast-read-byte *fasl-file*
2064 (let* ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits
2065 (1- sb!vm:complex-long-float-size)
2066 sb!vm:complex-long-float-type))
2067 (real-low-bits (make-random-descriptor (fast-read-u-integer 4)))
2068 (real-high-bits (make-random-descriptor (fast-read-u-integer 4)))
2069 (real-exp-bits (make-random-descriptor (fast-read-s-integer 2)))
2070 (imag-low-bits (make-random-descriptor (fast-read-u-integer 4)))
2071 (imag-high-bits (make-random-descriptor (fast-read-u-integer 4)))
2072 (imag-exp-bits (make-random-descriptor (fast-read-s-integer 2))))
2073 (done-with-fast-read-byte)
2074 (write-wordindexed des
2075 sb!vm:complex-long-float-real-slot
2077 (write-wordindexed des
2078 (1+ sb!vm:complex-long-float-real-slot)
2080 (write-wordindexed des
2081 (+ 2 sb!vm:complex-long-float-real-slot)
2083 (write-wordindexed des
2084 sb!vm:complex-long-float-imag-slot
2086 (write-wordindexed des
2087 (1+ sb!vm:complex-long-float-imag-slot)
2089 (write-wordindexed des
2090 (+ 2 sb!vm:complex-long-float-imag-slot)
2093 ;; This was supported in CMU CL, but isn't currently supported in SBCL.
2095 (#.sb!c:sparc-fasl-file-implementation ; 128 bit long-float format
2096 (prepare-for-fast-read-byte *fasl-file*
2097 (let* ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits
2098 (1- sb!vm:complex-long-float-size)
2099 sb!vm:complex-long-float-type))
2100 (real-low-bits (make-random-descriptor (fast-read-u-integer 4)))
2101 (real-mid-bits (make-random-descriptor (fast-read-u-integer 4)))
2102 (real-high-bits (make-random-descriptor (fast-read-u-integer 4)))
2103 (real-exp-bits (make-random-descriptor (fast-read-s-integer 4)))
2104 (imag-low-bits (make-random-descriptor (fast-read-u-integer 4)))
2105 (imag-mid-bits (make-random-descriptor (fast-read-u-integer 4)))
2106 (imag-high-bits (make-random-descriptor (fast-read-u-integer 4)))
2107 (imag-exp-bits (make-random-descriptor (fast-read-s-integer 4))))
2108 (done-with-fast-read-byte)
2109 (write-wordindexed des
2110 sb!vm:complex-long-float-real-slot
2112 (write-wordindexed des
2113 (1+ sb!vm:complex-long-float-real-slot)
2115 (write-wordindexed des
2116 (+ 2 sb!vm:complex-long-float-real-slot)
2118 (write-wordindexed des
2119 (+ 3 sb!vm:complex-long-float-real-slot)
2121 (write-wordindexed des
2122 sb!vm:complex-long-float-real-slot
2124 (write-wordindexed des
2125 (1+ sb!vm:complex-long-float-real-slot)
2127 (write-wordindexed des
2128 (+ 2 sb!vm:complex-long-float-real-slot)
2130 (write-wordindexed des
2131 (+ 3 sb!vm:complex-long-float-real-slot)
2135 (define-cold-fop (fop-ratio)
2136 (let ((den (pop-stack)))
2137 (number-pair-to-core (pop-stack) den sb!vm:ratio-type)))
2139 (define-cold-fop (fop-complex)
2140 (let ((im (pop-stack)))
2141 (number-pair-to-core (pop-stack) im sb!vm:complex-type)))
2143 ;;;; cold fops for calling (or not calling)
2145 (not-cold-fop fop-eval)
2146 (not-cold-fop fop-eval-for-effect)
2148 (defvar *load-time-value-counter*)
2150 (define-cold-fop (fop-funcall)
2151 (unless (= (read-arg 1) 0)
2152 (error "You can't FOP-FUNCALL arbitrary stuff in cold load."))
2153 (let ((counter *load-time-value-counter*))
2154 (cold-push (cold-cons
2155 (cold-intern :load-time-value)
2159 (number-to-core counter)
2161 *current-reversed-cold-toplevels*)
2162 (setf *load-time-value-counter* (1+ counter))
2163 (make-descriptor 0 0 nil counter)))
2165 (defun finalize-load-time-value-noise ()
2166 (cold-set (cold-intern 'sb!impl::*!load-time-values*)
2167 (allocate-vector-object *dynamic*
2169 *load-time-value-counter*
2170 sb!vm:simple-vector-type)))
2172 (define-cold-fop (fop-funcall-for-effect nil)
2173 (if (= (read-arg 1) 0)
2174 (cold-push (pop-stack)
2175 *current-reversed-cold-toplevels*)
2176 (error "You can't FOP-FUNCALL arbitrary stuff in cold load.")))
2178 ;;;; cold fops for fixing up circularities
2180 (define-cold-fop (fop-rplaca nil)
2181 (let ((obj (svref *current-fop-table* (read-arg 4)))
2183 (write-memory (cold-nthcdr idx obj) (pop-stack))))
2185 (define-cold-fop (fop-rplacd nil)
2186 (let ((obj (svref *current-fop-table* (read-arg 4)))
2188 (write-wordindexed (cold-nthcdr idx obj) 1 (pop-stack))))
2190 (define-cold-fop (fop-svset nil)
2191 (let ((obj (svref *current-fop-table* (read-arg 4)))
2193 (write-wordindexed obj
2195 (ecase (descriptor-lowtag obj)
2196 (#.sb!vm:instance-pointer-type 1)
2197 (#.sb!vm:other-pointer-type 2)))
2200 (define-cold-fop (fop-structset nil)
2201 (let ((obj (svref *current-fop-table* (read-arg 4)))
2203 (write-wordindexed obj (1+ idx) (pop-stack))))
2205 (define-cold-fop (fop-nthcdr t)
2206 (cold-nthcdr (read-arg 4) (pop-stack)))
2208 (defun cold-nthcdr (index obj)
2210 (setq obj (read-wordindexed obj 1)))
2213 ;;;; cold fops for loading code objects and functions
2215 (define-cold-fop (fop-fset nil)
2216 (let ((fn (pop-stack))
2218 (cold-fset name fn)))
2220 (define-cold-fop (fop-fdefinition)
2221 (cold-fdefinition-object (pop-stack)))
2223 (define-cold-fop (fop-sanctify-for-execution)
2226 (not-cold-fop fop-make-byte-compiled-function)
2228 ;;; Setting this variable shows what code looks like before any
2229 ;;; fixups (or function headers) are applied.
2230 #!+sb-show (defvar *show-pre-fixup-code-p* nil)
2232 ;;; FIXME: The logic here should be converted into a function
2233 ;;; COLD-CODE-FOP-GUTS (NCONST CODE-SIZE) called by DEFINE-COLD-FOP
2234 ;;; FOP-CODE and DEFINE-COLD-FOP FOP-SMALL-CODE, so that
2235 ;;; variable-capture nastiness like (LET ((NCONST ,NCONST) ..) ..)
2236 ;;; doesn't keep me awake at night.
2237 (defmacro define-cold-code-fop (name nconst code-size)
2238 `(define-cold-fop (,name)
2239 (let* ((nconst ,nconst)
2240 (code-size ,code-size)
2241 (raw-header-n-words (+ sb!vm:code-trace-table-offset-slot nconst))
2243 ;; Note: we round the number of constants up to ensure
2244 ;; that the code vector will be properly aligned.
2245 (round-up raw-header-n-words 2))
2246 (des (allocate-descriptor
2247 ;; In the X86 with CGC, code can't be relocated, so
2248 ;; we have to put it into static space. In all other
2249 ;; configurations, code can go into dynamic space.
2250 #!+(and x86 cgc) *static* ; KLUDGE: Why? -- WHN 19990907
2251 #!-(and x86 cgc) *dynamic*
2252 (+ (ash header-n-words sb!vm:word-shift) code-size)
2253 sb!vm:other-pointer-type)))
2255 (make-other-immediate-descriptor header-n-words
2256 sb!vm:code-header-type))
2257 (write-wordindexed des
2258 sb!vm:code-code-size-slot
2259 (make-fixnum-descriptor
2260 (ash (+ code-size (1- (ash 1 sb!vm:word-shift)))
2261 (- sb!vm:word-shift))))
2262 (write-wordindexed des sb!vm:code-entry-points-slot *nil-descriptor*)
2263 (write-wordindexed des sb!vm:code-debug-info-slot (pop-stack))
2264 (when (oddp raw-header-n-words)
2265 (write-wordindexed des
2267 (make-random-descriptor 0)))
2268 (do ((index (1- raw-header-n-words) (1- index)))
2269 ((< index sb!vm:code-trace-table-offset-slot))
2270 (write-wordindexed des index (pop-stack)))
2271 (let* ((start (+ (descriptor-byte-offset des)
2272 (ash header-n-words sb!vm:word-shift)))
2273 (end (+ start code-size)))
2274 (read-sequence-or-die (descriptor-bytes des)
2279 (when *show-pre-fixup-code-p*
2280 (format *trace-output*
2281 "~&/raw code from code-fop ~D ~D:~%"
2284 (do ((i start (+ i sb!vm:word-bytes)))
2286 (format *trace-output*
2287 "/#X~8,'0x: #X~8,'0x~%"
2288 (+ i (gspace-byte-address (descriptor-gspace des)))
2289 (byte-vector-ref-32 (descriptor-bytes des) i)))))
2292 (define-cold-code-fop fop-code (read-arg 4) (read-arg 4))
2294 (define-cold-code-fop fop-small-code (read-arg 1) (read-arg 2))
2296 (clone-cold-fop (fop-alter-code nil)
2297 (fop-byte-alter-code)
2298 (let ((slot (clone-arg))
2301 (write-wordindexed code slot value)))
2303 (define-cold-fop (fop-function-entry)
2304 (let* ((type (pop-stack))
2305 (arglist (pop-stack))
2307 (code-object (pop-stack))
2308 (offset (calc-offset code-object (read-arg 4)))
2309 (fn (descriptor-beyond code-object
2311 sb!vm:function-pointer-type))
2312 (next (read-wordindexed code-object sb!vm:code-entry-points-slot)))
2313 (unless (zerop (logand offset sb!vm:lowtag-mask))
2314 ;; FIXME: This should probably become a fatal error.
2315 (warn "unaligned function entry: ~S at #X~X" name offset))
2316 (write-wordindexed code-object sb!vm:code-entry-points-slot fn)
2318 (make-other-immediate-descriptor (ash offset
2319 (- sb!vm:word-shift))
2320 sb!vm:function-header-type))
2321 (write-wordindexed fn
2322 sb!vm:function-self-slot
2323 ;; KLUDGE: Wiring decisions like this in at
2324 ;; this level ("if it's an x86") instead of a
2325 ;; higher level of abstraction ("if it has such
2326 ;; and such relocation peculiarities (which
2327 ;; happen to be confined to the x86)") is bad.
2328 ;; It would be nice if the code were instead
2329 ;; conditional on some more descriptive
2330 ;; feature, :STICKY-CODE or
2331 ;; :LOAD-GC-INTERACTION or something.
2333 ;; FIXME: The X86 definition of the function
2334 ;; self slot breaks everything object.tex says
2335 ;; about it. (As far as I can tell, the X86
2336 ;; definition makes it a pointer to the actual
2337 ;; code instead of a pointer back to the object
2338 ;; itself.) Ask on the mailing list whether
2339 ;; this is documented somewhere, and if not,
2340 ;; try to reverse engineer some documentation
2343 ;; a pointer back to the function object, as
2344 ;; described in CMU CL
2345 ;; src/docs/internals/object.tex
2348 ;; KLUDGE: a pointer to the actual code of the
2349 ;; object, as described nowhere that I can find
2351 (make-random-descriptor
2352 (+ (descriptor-bits fn)
2353 (- (ash sb!vm:function-code-offset sb!vm:word-shift)
2354 ;; FIXME: We should mask out the type
2355 ;; bits, not assume we know what they
2356 ;; are and subtract them out this way.
2357 sb!vm:function-pointer-type))))
2358 (write-wordindexed fn sb!vm:function-next-slot next)
2359 (write-wordindexed fn sb!vm:function-name-slot name)
2360 (write-wordindexed fn sb!vm:function-arglist-slot arglist)
2361 (write-wordindexed fn sb!vm:function-type-slot type)
2364 (define-cold-fop (fop-foreign-fixup)
2365 (let* ((kind (pop-stack))
2366 (code-object (pop-stack))
2368 (sym (make-string len)))
2369 (read-string-as-bytes *fasl-file* sym)
2370 (let ((offset (read-arg 4))
2371 (value (lookup-foreign-symbol sym)))
2372 (do-cold-fixup code-object offset value kind))
2375 (define-cold-fop (fop-assembler-code)
2376 (let* ((length (read-arg 4))
2378 ;; Note: we round the number of constants up to ensure that
2379 ;; the code vector will be properly aligned.
2380 (round-up sb!vm:code-constants-offset 2))
2381 (des (allocate-descriptor *read-only*
2382 (+ (ash header-n-words sb!vm:word-shift)
2384 sb!vm:other-pointer-type)))
2386 (make-other-immediate-descriptor header-n-words
2387 sb!vm:code-header-type))
2388 (write-wordindexed des
2389 sb!vm:code-code-size-slot
2390 (make-fixnum-descriptor
2391 (ash (+ length (1- (ash 1 sb!vm:word-shift)))
2392 (- sb!vm:word-shift))))
2393 (write-wordindexed des sb!vm:code-entry-points-slot *nil-descriptor*)
2394 (write-wordindexed des sb!vm:code-debug-info-slot *nil-descriptor*)
2396 (let* ((start (+ (descriptor-byte-offset des)
2397 (ash header-n-words sb!vm:word-shift)))
2398 (end (+ start length)))
2399 (read-sequence-or-die (descriptor-bytes des)
2405 (define-cold-fop (fop-assembler-routine)
2406 (let* ((routine (pop-stack))
2408 (offset (calc-offset des (read-arg 4))))
2409 (record-cold-assembler-routine
2411 (+ (logandc2 (descriptor-bits des) sb!vm:lowtag-mask) offset))
2414 (define-cold-fop (fop-assembler-fixup)
2415 (let* ((routine (pop-stack))
2417 (code-object (pop-stack))
2418 (offset (read-arg 4)))
2419 (record-cold-assembler-fixup routine code-object offset kind)
2422 (define-cold-fop (fop-code-object-fixup)
2423 (let* ((kind (pop-stack))
2424 (code-object (pop-stack))
2425 (offset (read-arg 4))
2426 (value (descriptor-bits code-object)))
2427 (do-cold-fixup code-object offset value kind)
2430 ;;;; emitting C header file
2432 (defun tail-comp (string tail)
2433 (and (>= (length string) (length tail))
2434 (string= string tail :start1 (- (length string) (length tail)))))
2436 (defun head-comp (string head)
2437 (and (>= (length string) (length head))
2438 (string= string head :end1 (length head))))
2440 (defun write-c-header ()
2442 ;; writing beginning boilerplate
2445 '("This is a machine-generated file. Do not edit it by hand."
2447 "This file contains low-level information about the"
2448 "internals of a particular version and configuration"
2449 "of SBCL. It is used by the C compiler to create a runtime"
2450 "support environment, an executable program in the host"
2451 "operating system's native format, which can then be used to"
2452 "load and run 'core' files, which are basically programs"
2453 "in SBCL's own format."))
2454 (format t " * ~A~%" line))
2457 (format t "#ifndef _SBCL_H_~%#define _SBCL_H_~%")
2460 ;; writing miscellaneous constants
2461 (format t "#define SBCL_CORE_VERSION_INTEGER ~D~%" sbcl-core-version-integer)
2463 "#define SBCL_VERSION_STRING ~S~%"
2464 (sb!xc:lisp-implementation-version))
2465 (format t "#define CORE_MAGIC 0x~X~%" core-magic)
2467 ;; FIXME: Other things from core.h should be defined here too:
2468 ;; #define CORE_END 3840
2469 ;; #define CORE_NDIRECTORY 3861
2470 ;; #define CORE_VALIDATE 3845
2471 ;; #define CORE_VERSION 3860
2472 ;; #define CORE_MACHINE_STATE 3862
2473 ;; (Except that some of them are obsolete and should be deleted instead.)
2475 ;; #define DYNAMIC_SPACE_ID (1)
2476 ;; #define STATIC_SPACE_ID (2)
2477 ;; #define READ_ONLY_SPACE_ID (3)
2479 ;; writing entire families of named constants from SB!VM
2480 (let ((constants nil))
2481 (do-external-symbols (symbol (find-package "SB!VM"))
2482 (when (constantp symbol)
2483 (let ((name (symbol-name symbol)))
2484 (labels (;; shared machinery
2485 (record (string priority)
2488 (symbol-value symbol)
2489 (documentation symbol 'variable))
2491 ;; machinery for old-style CMU CL Lisp-to-C naming
2492 (record-with-munged-name (prefix string priority)
2493 (record (concatenate
2496 (delete #\- (string-capitalize string)))
2498 (test-tail (tail prefix priority)
2499 (when (tail-comp name tail)
2500 (record-with-munged-name prefix
2505 (test-head (head prefix priority)
2506 (when (head-comp name head)
2507 (record-with-munged-name prefix
2508 (subseq name (length head))
2510 ;; machinery for new-style SBCL Lisp-to-C naming
2511 (record-with-translated-name (priority)
2512 (record (substitute #\_ #\- name)
2514 ;; This style of munging of names is used in the code
2515 ;; inherited from CMU CL.
2516 (test-tail "-TYPE" "type_" 0)
2517 (test-tail "-FLAG" "flag_" 1)
2518 (test-tail "-TRAP" "trap_" 2)
2519 (test-tail "-SUBTYPE" "subtype_" 3)
2520 (test-head "TRACE-TABLE-" "tracetab_" 4)
2521 (test-tail "-SC-NUMBER" "sc_" 5)
2522 ;; This simpler style of translation of names seems less
2523 ;; confusing, and is used for newer code.
2524 (when (some (lambda (suffix) (tail-comp name suffix))
2526 (record-with-translated-name 6))))))
2529 #'(lambda (const1 const2)
2530 (if (= (second const1) (second const2))
2531 (< (third const1) (third const2))
2532 (< (second const1) (second const2))))))
2533 (let ((prev-priority (second (car constants))))
2534 (dolist (const constants)
2535 (destructuring-bind (name priority value doc) const
2536 (unless (= prev-priority priority)
2538 (setf prev-priority priority))
2539 (format t "#define ~A " name)
2541 ;; KLUDGE: As of sbcl-0.6.7.14, we're dumping two
2542 ;; different kinds of values here, (1) small codes
2543 ;; and (2) machine addresses. The small codes can be
2544 ;; dumped as bare integer values. The large machine
2545 ;; addresses might cause problems if they're large
2546 ;; and represented as (signed) C integers, so we
2547 ;; want to force them to be unsigned. We do that by
2548 ;; wrapping them in the LISPOBJ macro. (We could do
2549 ;; it with a bare "(unsigned)" cast, except that
2550 ;; this header file is used not only in C files, but
2551 ;; also in assembly files, which don't understand
2552 ;; the cast syntax. The LISPOBJ macro goes away in
2553 ;; assembly files, but that shouldn't matter because
2554 ;; we don't do arithmetic on address constants in
2555 ;; assembly files. See? It really is a kludge..) --
2557 (let (;; cutoff for treatment as a small code
2558 (cutoff (expt 2 16)))
2559 (cond ((minusp value)
2560 (error "stub: negative values unsupported"))
2566 (format t " /* 0x~X */~@[ /* ~A */~]~%" value doc))))
2569 ;; writing codes/strings for internal errors
2570 (format t "#define ERRORS { \\~%")
2571 ;; FIXME: Is this just DO-VECTOR?
2572 (let ((internal-errors sb!c:*backend-internal-errors*))
2573 (dotimes (i (length internal-errors))
2574 (format t " ~S, /*~D*/ \\~%" (cdr (aref internal-errors i)) i)))
2575 (format t " NULL \\~%}~%")
2578 ;; writing primitive object layouts
2579 (let ((structs (sort (copy-list sb!vm:*primitive-objects*) #'string<
2580 :key #'(lambda (obj)
2582 (sb!vm:primitive-object-name obj))))))
2583 (format t "#ifndef LANGUAGE_ASSEMBLY~2%")
2584 (format t "#define LISPOBJ(x) ((lispobj)x)~2%")
2585 (dolist (obj structs)
2588 (nsubstitute #\_ #\-
2589 (string-downcase (string (sb!vm:primitive-object-name obj)))))
2590 (when (sb!vm:primitive-object-header obj)
2591 (format t " lispobj header;~%"))
2592 (dolist (slot (sb!vm:primitive-object-slots obj))
2593 (format t " ~A ~A~@[[1]~];~%"
2594 (getf (sb!vm:slot-options slot) :c-type "lispobj")
2595 (nsubstitute #\_ #\-
2596 (string-downcase (string (sb!vm:slot-name slot))))
2597 (sb!vm:slot-rest-p slot)))
2599 (format t "#else /* LANGUAGE_ASSEMBLY */~2%")
2600 (format t "#define LISPOBJ(thing) thing~2%")
2601 (dolist (obj structs)
2602 (let ((name (sb!vm:primitive-object-name obj))
2603 (lowtag (eval (sb!vm:primitive-object-lowtag obj))))
2605 (dolist (slot (sb!vm:primitive-object-slots obj))
2606 (format t "#define ~A_~A_OFFSET ~D~%"
2607 (substitute #\_ #\- (string name))
2608 (substitute #\_ #\- (string (sb!vm:slot-name slot)))
2609 (- (* (sb!vm:slot-offset slot) sb!vm:word-bytes) lowtag)))
2611 (format t "#endif /* LANGUAGE_ASSEMBLY */~2%"))
2613 ;; writing static symbol offsets
2614 (dolist (symbol (cons nil sb!vm:*static-symbols*))
2615 ;; FIXME: It would be nice to use longer names NIL and (particularly) T
2616 ;; in #define statements.
2617 (format t "#define ~A LISPOBJ(0x~X)~%"
2618 (nsubstitute #\_ #\-
2619 (remove-if #'(lambda (char)
2620 (member char '(#\% #\* #\. #\!)))
2621 (symbol-name symbol)))
2622 (if *static* ; if we ran GENESIS
2623 ;; We actually ran GENESIS, use the real value.
2624 (descriptor-bits (cold-intern symbol))
2625 ;; We didn't run GENESIS, so guess at the address.
2626 (+ sb!vm:static-space-start
2628 sb!vm:other-pointer-type
2629 (if symbol (sb!vm:static-symbol-offset symbol) 0)))))
2632 (format t "~%#endif~%"))
2634 ;;;; writing map file
2636 ;;; Write a map file describing the cold load. Some of this
2637 ;;; information is subject to change due to relocating GC, but even so
2638 ;;; it can be very handy when attempting to troubleshoot the early
2639 ;;; stages of cold load.
2641 (let ((*print-pretty* nil)
2642 (*print-case* :upcase))
2643 (format t "assembler routines defined in core image:~2%")
2644 (dolist (routine (sort (copy-list *cold-assembler-routines*) #'<
2646 (format t "#X~8,'0X: ~S~%" (cdr routine) (car routine)))
2649 (maphash #'(lambda (name fdefn)
2650 (let ((fun (read-wordindexed fdefn
2651 sb!vm:fdefn-function-slot)))
2652 (if (= (descriptor-bits fun)
2653 (descriptor-bits *nil-descriptor*))
2655 (let ((addr (read-wordindexed fdefn
2656 sb!vm:fdefn-raw-addr-slot)))
2657 (push (cons name (descriptor-bits addr))
2659 *cold-fdefn-objects*)
2660 (format t "~%~|~%initially defined functions:~2%")
2661 (dolist (info (sort funs #'< :key #'cdr))
2662 (format t "0x~8,'0X: ~S #X~8,'0X~%" (cdr info) (car info)
2663 (- (cdr info) #x17)))
2666 (a note about initially undefined function references: These functions
2667 are referred to by code which is installed by GENESIS, but they are not
2668 installed by GENESIS. This is not necessarily a problem; functions can
2669 be defined later, by cold init toplevel forms, or in files compiled and
2670 loaded at warm init, or elsewhere. As long as they are defined before
2671 they are called, everything should be OK. Things are also OK if the
2672 cross-compiler knew their inline definition and used that everywhere
2673 that they were called before the out-of-line definition is installed,
2674 as is fairly common for structure accessors.)
2675 initially undefined function references:~2%")
2676 (labels ((key (name)
2678 (symbol (symbol-name name))
2679 ;; FIXME: should use standard SETF-function parsing logic
2680 (list (key (second name))))))
2681 (dolist (name (sort undefs #'string< :key #'key))
2682 (format t "~S" name)
2683 ;; FIXME: This ACCESSOR-FOR stuff should go away when the
2684 ;; code has stabilized. (It's only here to help me
2685 ;; categorize the flood of undefined functions caused by
2686 ;; completely rewriting the bootstrap process. Hopefully any
2687 ;; future maintainers will mostly have small numbers of
2688 ;; undefined functions..)
2689 (let ((accessor-for (info :function :accessor-for name)))
2691 (format t " (accessor for ~S)" accessor-for)))
2694 (format t "~%~|~%layout names:~2%")
2696 (maphash #'(lambda (name gorp)
2697 (declare (ignore name))
2698 (stuff (cons (descriptor-bits (car gorp))
2701 (dolist (x (sort (stuff) #'< :key #'car))
2702 (apply #'format t "~8,'0X: ~S[~D]~%~10T~S~%" x)))
2706 ;;;; writing core file
2708 (defvar *core-file*)
2709 (defvar *data-page*)
2711 ;;; KLUDGE: These numbers correspond to values in core.h. If they're
2712 ;;; documented anywhere, I haven't found it. (I haven't tried very
2713 ;;; hard yet.) -- WHN 19990826
2714 (defparameter version-entry-type-code 3860)
2715 (defparameter validate-entry-type-code 3845)
2716 (defparameter directory-entry-type-code 3841)
2717 (defparameter new-directory-entry-type-code 3861)
2718 (defparameter initial-function-entry-type-code 3863)
2719 (defparameter end-entry-type-code 3840)
2721 (declaim (ftype (function (sb!vm:word) sb!vm:word) write-long))
2722 (defun write-long (num) ; FIXME: WRITE-WORD would be a better name.
2723 (ecase sb!c:*backend-byte-order*
2726 (write-byte (ldb (byte 8 (* i 8)) num) *core-file*)))
2729 (write-byte (ldb (byte 8 (* (- 3 i) 8)) num) *core-file*))))
2732 (defun advance-to-page ()
2733 (force-output *core-file*)
2734 (file-position *core-file*
2735 (round-up (file-position *core-file*)
2736 sb!c:*backend-page-size*)))
2738 (defun output-gspace (gspace)
2739 (force-output *core-file*)
2740 (let* ((posn (file-position *core-file*))
2741 (bytes (* (gspace-free-word-index gspace) sb!vm:word-bytes))
2742 (pages (ceiling bytes sb!c:*backend-page-size*))
2743 (total-bytes (* pages sb!c:*backend-page-size*)))
2745 (file-position *core-file*
2746 (* sb!c:*backend-page-size* (1+ *data-page*)))
2748 "writing ~S byte~:P [~S page~:P] from ~S~%"
2754 ;; Note: It is assumed that the GSPACE allocation routines always
2755 ;; allocate whole pages (of size *target-page-size*) and that any
2756 ;; empty gspace between the free pointer and the end of page will
2757 ;; be zero-filled. This will always be true under Mach on machines
2758 ;; where the page size is equal. (RT is 4K, PMAX is 4K, Sun 3 is
2760 (write-sequence (gspace-bytes gspace) *core-file* :end total-bytes)
2761 (force-output *core-file*)
2762 (file-position *core-file* posn)
2764 ;; Write part of a (new) directory entry which looks like this:
2765 ;; GSPACE IDENTIFIER
2770 (write-long (gspace-identifier gspace))
2771 (write-long (gspace-free-word-index gspace))
2772 (write-long *data-page*)
2773 (multiple-value-bind (floor rem)
2774 (floor (gspace-byte-address gspace) sb!c:*backend-page-size*)
2779 (incf *data-page* pages)))
2781 ;;; Create a core file created from the cold loaded image. (This is
2782 ;;; the "initial core file" because core files could be created later
2783 ;;; by executing SAVE-LISP in a running system, perhaps after we've
2784 ;;; added some functionality to the system.)
2785 (declaim (ftype (function (string)) write-initial-core-file))
2786 (defun write-initial-core-file (filename)
2788 (let ((filenamestring (namestring filename))
2792 "[building initial core file in ~S: ~%"
2796 (with-open-file (*core-file* filenamestring
2798 :element-type '(unsigned-byte 8)
2799 :if-exists :rename-and-delete)
2801 ;; Write the magic number.
2802 (write-long core-magic)
2804 ;; Write the Version entry.
2805 (write-long version-entry-type-code)
2807 (write-long sbcl-core-version-integer)
2809 ;; Write the New Directory entry header.
2810 (write-long new-directory-entry-type-code)
2811 (write-long 17) ; length = (5 words/space) * 3 spaces + 2 for header.
2813 (output-gspace *read-only*)
2814 (output-gspace *static*)
2815 (output-gspace *dynamic*)
2817 ;; Write the initial function.
2818 (write-long initial-function-entry-type-code)
2820 (let* ((cold-name (cold-intern '!cold-init))
2821 (cold-fdefn (cold-fdefinition-object cold-name))
2822 (initial-function (read-wordindexed cold-fdefn
2823 sb!vm:fdefn-function-slot)))
2825 "~&/(DESCRIPTOR-BITS INITIAL-FUNCTION)=#X~X~%"
2826 (descriptor-bits initial-function))
2827 (write-long (descriptor-bits initial-function)))
2829 ;; Write the End entry.
2830 (write-long end-entry-type-code)
2833 (format t "done]~%")
2835 (/show "leaving WRITE-INITIAL-CORE-FILE")
2838 ;;;; the actual GENESIS function
2840 ;;; Read the FASL files in OBJECT-FILE-NAMES and produce a Lisp core,
2841 ;;; and/or information about a Lisp core, therefrom.
2843 ;;; input file arguments:
2844 ;;; SYMBOL-TABLE-FILE-NAME names a UNIX-style .nm file *with* *any*
2845 ;;; *tab* *characters* *converted* *to* *spaces*. (We push
2846 ;;; responsibility for removing tabs out to the caller it's
2847 ;;; trivial to remove them using UNIX command line tools like
2848 ;;; sed, whereas it's a headache to do it portably in Lisp because
2849 ;;; #\TAB is not a STANDARD-CHAR.) If this file is not supplied,
2850 ;;; a core file cannot be built (but a C header file can be).
2852 ;;; output files arguments (any of which may be NIL to suppress output):
2853 ;;; CORE-FILE-NAME gets a Lisp core.
2854 ;;; C-HEADER-FILE-NAME gets a C header file, traditionally called
2855 ;;; internals.h, which is used by the C compiler when constructing
2856 ;;; the executable which will load the core.
2857 ;;; MAP-FILE-NAME gets (?) a map file. (dunno about this -- WHN 19990815)
2859 ;;; other arguments:
2860 ;;; BYTE-ORDER-SWAP-P controls whether GENESIS tries to swap bytes
2861 ;;; in some places in the output. It's only appropriate when
2862 ;;; cross-compiling from a machine with one byte order to a
2863 ;;; machine with the opposite byte order, which is irrelevant in
2864 ;;; current (19990816) SBCL, since only the X86 architecture is
2865 ;;; supported. If you're trying to add support for more
2866 ;;; architectures, see the comments on DEFVAR
2867 ;;; *GENESIS-BYTE-ORDER-SWAP-P* for more information.
2869 ;;; FIXME: GENESIS doesn't belong in SB!VM. Perhaps in %KERNEL for now,
2870 ;;; perhaps eventually in SB-LD or SB-BOOT.
2871 (defun sb!vm:genesis (&key
2873 symbol-table-file-name
2879 (when (and core-file-name
2880 (not symbol-table-file-name))
2881 (error "can't output a core file without symbol table file input"))
2884 "~&beginning GENESIS, ~A~%"
2886 ;; Note: This output summarizing what we're doing is
2887 ;; somewhat telegraphic in style, not meant to imply that
2888 ;; we're not e.g. also creating a header file when we
2890 (format nil "creating core ~S" core-file-name)
2891 (format nil "creating header ~S" c-header-file-name)))
2893 (let* ((*cold-foreign-symbol-table* (make-hash-table :test 'equal)))
2895 ;; Read symbol table, if any.
2896 (when symbol-table-file-name
2897 (load-foreign-symbol-table symbol-table-file-name))
2899 ;; Now that we've successfully read our only input file (by
2900 ;; loading the symbol table, if any), it's a good time to ensure
2901 ;; that there'll be someplace for our output files to go when
2903 (flet ((frob (filename)
2905 (ensure-directories-exist filename :verbose t))))
2906 (frob core-file-name)
2907 (frob map-file-name)
2908 (frob c-header-file-name))
2910 ;; (This shouldn't matter in normal use, since GENESIS normally
2911 ;; only runs once in any given Lisp image, but it could reduce
2912 ;; confusion if we ever experiment with running, tweaking, and
2913 ;; rerunning genesis interactively.)
2914 (do-all-symbols (sym)
2915 (remprop sym 'cold-intern-info))
2917 (let* ((*foreign-symbol-placeholder-value* (if core-file-name nil 0))
2918 (*load-time-value-counter* 0)
2919 (*genesis-byte-order-swap-p* byte-order-swap-p)
2920 (*cold-fdefn-objects* (make-hash-table :test 'equal))
2921 (*cold-symbols* (make-hash-table :test 'equal))
2922 (*cold-package-symbols* nil)
2923 (*read-only* (make-gspace :read-only
2925 sb!vm:read-only-space-start))
2926 (*static* (make-gspace :static
2928 sb!vm:static-space-start))
2929 (*dynamic* (make-gspace :dynamic
2931 sb!vm:dynamic-space-start))
2932 (*nil-descriptor* (make-nil-descriptor))
2933 (*current-reversed-cold-toplevels* *nil-descriptor*)
2934 (*unbound-marker* (make-other-immediate-descriptor
2936 sb!vm:unbound-marker-type))
2937 *cold-assembler-fixups*
2938 *cold-assembler-routines*
2939 #!+x86 *load-time-code-fixups*)
2941 ;; Prepare for cold load.
2942 (initialize-non-nil-symbols)
2943 (initialize-layouts)
2944 (initialize-static-fns)
2946 ;; Initialize the *COLD-SYMBOLS* system with the information
2947 ;; from package-data-list.lisp-expr and
2948 ;; common-lisp-exports.lisp-expr.
2950 ;; Why do things this way? Historically, the *COLD-SYMBOLS*
2951 ;; machinery was designed and implemented in CMU CL long before
2952 ;; I (WHN) ever heard of CMU CL. It dumped symbols and packages
2953 ;; iff they were used in the cold image. When I added the
2954 ;; package-data-list.lisp-expr mechanism, the idea was to
2955 ;; centralize all information about packages and exports. Thus,
2956 ;; it was the natural place for information even about packages
2957 ;; (such as SB!PCL and SB!WALKER) which aren't used much until
2958 ;; after cold load. This didn't quite match the CMU CL approach
2959 ;; of filling *COLD-SYMBOLS* with symbols which appear in the
2960 ;; cold image and then dumping only those symbols. By explicitly
2961 ;; putting all the symbols from package-data-list.lisp-expr and
2962 ;; from common-lisp-exports.lisp-expr into *COLD-SYMBOLS* here,
2963 ;; we feed our centralized symbol information into the old CMU
2964 ;; CL code without having to change the old CMU CL code too
2965 ;; much. (And the old CMU CL code is still useful for making
2966 ;; sure that the appropriate keywords and internal symbols end
2967 ;; up interned in the target Lisp, which is good, e.g. in order
2968 ;; to make &KEY arguments work right and in order to make
2969 ;; BACKTRACEs into target Lisp system code be legible.)
2970 (dolist (exported-name
2971 (sb-cold:read-from-file "common-lisp-exports.lisp-expr"))
2972 (cold-intern (intern exported-name *cl-package*)))
2973 (dolist (pd (sb-cold:read-from-file "package-data-list.lisp-expr"))
2974 (declare (type sb-cold:package-data pd))
2975 (let ((package (find-package (sb-cold:package-data-name pd))))
2976 (labels (;; Call FN on every node of the TREE.
2977 (mapc-on-tree (fn tree)
2979 (cons (mapc-on-tree fn (car tree))
2980 (mapc-on-tree fn (cdr tree)))
2981 (t (funcall fn tree)
2983 ;; Make sure that information about the association
2984 ;; between PACKAGE and the symbol named NAME gets
2985 ;; recorded in the cold-intern system or (as a
2986 ;; convenience when dealing with the tree structure
2987 ;; allowed in the PACKAGE-DATA-EXPORTS slot) do
2988 ;; nothing if NAME is NIL.
2991 (cold-intern (intern name package) package))))
2992 (mapc-on-tree #'chill (sb-cold:package-data-export pd))
2993 (mapc #'chill (sb-cold:package-data-reexport pd))
2994 (dolist (sublist (sb-cold:package-data-import-from pd))
2995 (destructuring-bind (package-name &rest symbol-names) sublist
2996 (declare (ignore package-name))
2997 (mapc #'chill symbol-names))))))
3000 (dolist (file-name object-file-names)
3001 (write-line (namestring file-name))
3002 (cold-load file-name))
3004 ;; Tidy up loose ends left by cold loading. ("Postpare from cold load?")
3005 (resolve-assembler-fixups)
3006 #!+x86 (output-load-time-code-fixups)
3007 (linkage-info-to-core)
3009 (/show "back from FINISH-SYMBOLS")
3010 (finalize-load-time-value-noise)
3012 ;; Tell the target Lisp how much stuff we've allocated.
3013 (cold-set 'sb!vm:*read-only-space-free-pointer*
3014 (allocate-descriptor *read-only* 0 sb!vm:even-fixnum-type))
3015 (cold-set 'sb!vm:*static-space-free-pointer*
3016 (allocate-descriptor *static* 0 sb!vm:even-fixnum-type))
3017 (cold-set 'sb!vm:*initial-dynamic-space-free-pointer*
3018 (allocate-descriptor *dynamic* 0 sb!vm:even-fixnum-type))
3019 (/show "done setting free pointers")
3021 ;; Write results to files.
3023 ;; FIXME: I dislike this approach of redefining
3024 ;; *STANDARD-OUTPUT* instead of putting the new stream in a
3025 ;; lexical variable, and it's annoying to have WRITE-MAP (to
3026 ;; *STANDARD-OUTPUT*) not be parallel to WRITE-INITIAL-CORE-FILE
3027 ;; (to a stream explicitly passed as an argument).
3029 (with-open-file (*standard-output* map-file-name
3031 :if-exists :supersede)
3033 (when c-header-file-name
3034 (with-open-file (*standard-output* c-header-file-name
3036 :if-exists :supersede)
3038 (when core-file-name
3039 (write-initial-core-file core-file-name)))))