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 ;;;; 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 ;;;; This software is part of the SBCL system. See the README file for
18 ;;;; more information.
20 ;;;; This software is derived from the CMU CL system, which was
21 ;;;; written at Carnegie Mellon University and released into the
22 ;;;; public domain. The software is in the public domain and is
23 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
24 ;;;; files for more information.
26 (in-package "SB!IMPL")
31 ;;; a magic number used to identify core files
32 (defconstant core-magic
33 (logior (ash (char-code #\S) 24)
34 (ash (char-code #\B) 16)
35 (ash (char-code #\C) 8)
38 ;;; the current version of SBCL core files
40 ;;; FIXME: This is left over from CMU CL, and not well thought out.
41 ;;; It's good to make sure that the runtime doesn't try to run core
42 ;;; files from the wrong version, but a single number is not the ideal
43 ;;; way to do this in high level data like this (as opposed to e.g. in
44 ;;; IP packets), and in fact the CMU CL version number never ended up
45 ;;; being incremented past 0. A better approach might be to use a
46 ;;; string which is set from CVS data.
47 (defconstant sbcl-core-version-integer 0)
49 (defun round-up (number size)
51 "Round NUMBER up to be an integral multiple of SIZE."
52 (* size (ceiling number size)))
54 ;;;; representation of spaces in the core
57 (defconstant dynamic-space-id 1)
60 (defconstant static-space-id 2)
63 (defconstant read-only-space-id 3)
65 (eval-when (:compile-toplevel :execute :load-toplevel)
66 (defconstant descriptor-low-bits 16
67 "the number of bits in the low half of the descriptor")
68 (defconstant target-space-alignment (ash 1 descriptor-low-bits)
69 "the alignment requirement for spaces in the target.
70 Must be at least (ASH 1 DESCRIPTOR-LOW-BITS)"))
72 ;;; a GENESIS-time representation of a memory space (e.g. read-only space,
73 ;;; dynamic space, or static space)
74 (defstruct (gspace (:constructor %make-gspace))
75 ;; name and identifier for this GSPACE
76 (name (required-argument) :type symbol :read-only t)
77 (identifier (required-argument) :type fixnum :read-only t)
78 ;; the word address where the data will be loaded
79 (word-address (required-argument) :type unsigned-byte :read-only t)
80 ;; the data themselves. (Note that in CMU CL this was a pair
81 ;; of fields SAP and WORDS-ALLOCATED, but that wasn't very portable.)
82 (bytes (make-array target-space-alignment :element-type '(unsigned-byte 8))
83 :type (simple-array (unsigned-byte 8) 1))
84 ;; the index of the next unwritten word (i.e. chunk of
85 ;; SB!VM:WORD-BYTES bytes) in BYTES, or equivalently the number of
86 ;; words actually written in BYTES. In order to convert to an actual
87 ;; index into BYTES, thus must be multiplied by SB!VM:WORD-BYTES.
90 (defun gspace-byte-address (gspace)
91 (ash (gspace-word-address gspace) sb!vm:word-shift))
93 (def!method print-object ((gspace gspace) stream)
94 (print-unreadable-object (gspace stream :type t)
95 (format stream "~S" (gspace-name gspace))))
97 (defun make-gspace (name identifier byte-address)
98 (unless (zerop (rem byte-address target-space-alignment))
99 (error "The byte address #X~X is not aligned on a #X~X-byte boundary."
101 target-space-alignment))
102 (%make-gspace :name name
103 :identifier identifier
104 :word-address (ash byte-address (- sb!vm:word-shift))))
106 ;;; KLUDGE: Doing it this way seems to partly replicate the
107 ;;; functionality of Common Lisp adjustable arrays. Is there any way
108 ;;; to do this stuff in one line of code by using standard Common Lisp
109 ;;; stuff? -- WHN 19990816
110 (defun expand-gspace-bytes (gspace)
111 (let* ((old-bytes (gspace-bytes gspace))
112 (old-length (length old-bytes))
113 (new-length (* 2 old-length))
114 (new-bytes (make-array new-length :element-type '(unsigned-byte 8))))
115 (replace new-bytes old-bytes :end1 old-length)
116 (setf (gspace-bytes gspace)
120 ;;;; representation of descriptors
122 (defstruct (descriptor
123 (:constructor make-descriptor
124 (high low &optional gspace word-offset)))
125 ;; the GSPACE that this descriptor is allocated in, or NIL if not set yet.
126 (gspace nil :type (or gspace null))
127 ;; the offset in words from the start of GSPACE, or NIL if not set yet
128 (word-offset nil :type (or (unsigned-byte #.sb!vm:word-bits) null))
129 ;; the high and low halves of the descriptor KLUDGE: Judging from
130 ;; the comments in genesis.lisp of the CMU CL old-rt compiler, this
131 ;; split dates back from a very early version of genesis where
132 ;; 32-bit integers were represented as conses of two 16-bit
133 ;; integers. In any system with nice (UNSIGNED-BYTE 32) structure
134 ;; slots, like CMU CL >= 17 or any version of SBCL, there seems to
135 ;; be no reason to persist in this. -- WHN 19990917
137 (def!method print-object ((des descriptor) stream)
138 (let ((lowtag (descriptor-lowtag des)))
139 (print-unreadable-object (des stream :type t)
140 (cond ((or (= lowtag sb!vm:even-fixnum-type)
141 (= lowtag sb!vm:odd-fixnum-type))
142 (let ((unsigned (logior (ash (descriptor-high des)
143 (1+ (- descriptor-low-bits
145 (ash (descriptor-low des)
146 (- 1 sb!vm:lowtag-bits)))))
149 (if (> unsigned #x1FFFFFFF)
150 (- unsigned #x40000000)
152 ((or (= lowtag sb!vm:other-immediate-0-type)
153 (= lowtag sb!vm:other-immediate-1-type))
155 "for other immediate: #X~X, type #b~8,'0B"
156 (ash (descriptor-bits des) (- sb!vm:type-bits))
157 (logand (descriptor-low des) sb!vm:type-mask)))
160 "for pointer: #X~X, lowtag #b~3,'0B, ~A"
161 (logior (ash (descriptor-high des) descriptor-low-bits)
162 (logandc2 (descriptor-low des) sb!vm:lowtag-mask))
164 (let ((gspace (descriptor-gspace des)))
169 (defun allocate-descriptor (gspace length lowtag)
171 "Return a descriptor for a block of LENGTH bytes out of GSPACE. The free
172 word index is boosted as necessary, and if additional memory is needed, we
173 grow the GSPACE. The descriptor returned is a pointer of type LOWTAG."
174 (let* ((bytes (round-up length (ash 1 sb!vm:lowtag-bits)))
175 (old-free-word-index (gspace-free-word-index gspace))
176 (new-free-word-index (+ old-free-word-index
177 (ash bytes (- sb!vm:word-shift)))))
178 ;; Grow GSPACE as necessary until it's big enough to handle
179 ;; NEW-FREE-WORD-INDEX.
181 ((>= (length (gspace-bytes gspace))
182 (* new-free-word-index sb!vm:word-bytes)))
183 (expand-gspace-bytes gspace))
184 ;; Now that GSPACE is big enough, we can meaningfully grab a chunk of it.
185 (setf (gspace-free-word-index gspace) new-free-word-index)
186 (let ((ptr (+ (gspace-word-address gspace) old-free-word-index)))
187 (make-descriptor (ash ptr (- sb!vm:word-shift descriptor-low-bits))
188 (logior (ash (logand ptr
190 (- descriptor-low-bits
195 old-free-word-index))))
197 (defun descriptor-lowtag (des)
199 "the lowtag bits for DES"
200 (logand (descriptor-low des) sb!vm:lowtag-mask))
202 (defun descriptor-bits (des)
203 (logior (ash (descriptor-high des) descriptor-low-bits)
204 (descriptor-low des)))
206 (defun descriptor-fixnum (des)
207 (let ((bits (descriptor-bits des)))
208 (if (logbitp (1- sb!vm:word-bits) bits)
209 ;; KLUDGE: The (- SB!VM:WORD-BITS 2) term here looks right to
210 ;; me, and it works, but in CMU CL it was (1- SB!VM:WORD-BITS),
211 ;; and although that doesn't make sense for me, or work for me,
212 ;; it's hard to see how it could have been wrong, since CMU CL
213 ;; genesis worked. It would be nice to understand how this came
214 ;; to be.. -- WHN 19990901
215 (logior (ash bits -2) (ash -1 (- sb!vm:word-bits 2)))
219 (defun descriptor-bytes (des)
220 (gspace-bytes (descriptor-intuit-gspace des)))
221 (defun descriptor-byte-offset (des)
222 (ash (descriptor-word-offset des) sb!vm:word-shift))
224 ;;; If DESCRIPTOR-GSPACE is already set, just return that. Otherwise,
225 ;;; figure out a GSPACE which corresponds to DES, set it into
226 ;;; (DESCRIPTOR-GSPACE DES), set a consistent value into
227 ;;; (DESCRIPTOR-WORD-OFFSET DES), and return the GSPACE.
228 (declaim (ftype (function (descriptor) gspace) descriptor-intuit-gspace))
229 (defun descriptor-intuit-gspace (des)
230 (if (descriptor-gspace des)
231 (descriptor-gspace des)
232 ;; KLUDGE: It's not completely clear to me what's going on here;
233 ;; this is a literal translation from of some rather mysterious
234 ;; code from CMU CL's DESCRIPTOR-SAP function. Some explanation
235 ;; would be nice. -- WHN 19990817
236 (let ((lowtag (descriptor-lowtag des))
237 (high (descriptor-high des))
238 (low (descriptor-low des)))
239 (if (or (eql lowtag sb!vm:function-pointer-type)
240 (eql lowtag sb!vm:instance-pointer-type)
241 (eql lowtag sb!vm:list-pointer-type)
242 (eql lowtag sb!vm:other-pointer-type))
243 (dolist (gspace (list *dynamic* *static* *read-only*)
244 (error "couldn't find a GSPACE for ~S" des))
245 ;; This code relies on the fact that GSPACEs are aligned such that
246 ;; the descriptor-low-bits low bits are zero.
247 (when (and (>= high (ash (gspace-word-address gspace)
248 (- sb!vm:word-shift descriptor-low-bits)))
249 (<= high (ash (+ (gspace-word-address gspace)
250 (gspace-free-word-index gspace))
251 (- sb!vm:word-shift descriptor-low-bits))))
252 (setf (descriptor-gspace des) gspace)
253 (setf (descriptor-word-offset des)
254 (+ (ash (- high (ash (gspace-word-address gspace)
256 descriptor-low-bits)))
257 (- descriptor-low-bits sb!vm:word-shift))
258 (ash (logandc2 low sb!vm:lowtag-mask)
259 (- sb!vm:word-shift))))
261 (error "don't even know how to look for a GSPACE for ~S" des)))))
263 (defun make-random-descriptor (value)
264 (make-descriptor (logand (ash value (- descriptor-low-bits))
266 (- sb!vm:word-bits descriptor-low-bits))))
267 (logand value (1- (ash 1 descriptor-low-bits)))))
269 (defun make-fixnum-descriptor (num)
270 (when (>= (integer-length num)
271 (1+ (- sb!vm:word-bits sb!vm:lowtag-bits)))
272 (error "~D is too big for a fixnum." num))
273 (make-random-descriptor (ash num (1- sb!vm:lowtag-bits))))
275 (defun make-other-immediate-descriptor (data type)
276 (make-descriptor (ash data (- sb!vm:type-bits descriptor-low-bits))
277 (logior (logand (ash data (- descriptor-low-bits
279 (1- (ash 1 descriptor-low-bits)))
282 (defun make-character-descriptor (data)
283 (make-other-immediate-descriptor data sb!vm:base-char-type))
285 (defun descriptor-beyond (des offset type)
286 (let* ((low (logior (+ (logandc2 (descriptor-low des) sb!vm:lowtag-mask)
289 (high (+ (descriptor-high des)
290 (ash low (- descriptor-low-bits)))))
291 (make-descriptor high (logand low (1- (ash 1 descriptor-low-bits))))))
293 ;;;; miscellaneous variables and other noise
295 ;;; a numeric value to be returned for undefined foreign symbols, or NIL if
296 ;;; undefined foreign symbols are to be treated as an error.
297 ;;; (In the first pass of GENESIS, needed to create a header file before
298 ;;; the C runtime can be built, various foreign symbols will necessarily
299 ;;; be undefined, but we don't need actual values for them anyway, and
300 ;;; we can just use 0 or some other placeholder. In the second pass of
301 ;;; GENESIS, all foreign symbols should be defined, so any undefined
302 ;;; foreign symbol is a problem.)
304 ;;; KLUDGE: It would probably be cleaner to rewrite GENESIS so that it
305 ;;; never tries to look up foreign symbols in the first place unless
306 ;;; it's actually creating a core file (as in the second pass) instead
307 ;;; of using this hack to allow it to go through the motions without
308 ;;; causing an error. -- WHN 20000825
309 (defvar *foreign-symbol-placeholder-value*)
311 ;;; a handle on the trap object
312 (defvar *unbound-marker*)
313 ;; was: (make-other-immediate-descriptor 0 sb!vm:unbound-marker-type)
315 ;;; a handle on the NIL object
316 (defvar *nil-descriptor*)
318 ;;; the head of a list of TOPLEVEL-THINGs describing stuff to be done
319 ;;; when the target Lisp starts up
321 ;;; Each TOPLEVEL-THING can be a function to be executed or a fixup or
322 ;;; loadtime value, represented by (CONS KEYWORD ..). The FILENAME
323 ;;; tells which fasl file each list element came from, for debugging
325 (defvar *current-reversed-cold-toplevels*)
327 ;;; the name of the object file currently being cold loaded (as a string, not a
328 ;;; pathname), or NIL if we're not currently cold loading any object file
329 (defvar *cold-load-filename* nil)
330 (declaim (type (or string null) *cold-load-filename*))
332 ;;; This is vestigial support for the CMU CL byte-swapping code. CMU
333 ;;; CL code tested for whether it needed to swap bytes in GENESIS by
334 ;;; comparing the byte order of *BACKEND* to the byte order of
335 ;;; *NATIVE-BACKEND*, a concept which doesn't exist in SBCL. Instead,
336 ;;; in SBCL byte order swapping would need to be explicitly requested
337 ;;; with a keyword argument to GENESIS.
339 ;;; I'm not sure whether this is a problem or not, and I don't have a
340 ;;; machine with different byte order to test to find out for sure.
341 ;;; The version of the system which is fed to the cross-compiler is
342 ;;; now written in a subset of Common Lisp which doesn't require
343 ;;; dumping a lot of things in such a way that machine byte order
344 ;;; matters. (Mostly this is a matter of not using any specialized
345 ;;; array type unless there's portable, high-level code to dump it.)
346 ;;; If it *is* a problem, and you're trying to resurrect this code,
347 ;;; please test particularly carefully, since I haven't had a chance
348 ;;; to test the byte-swapping code at all. -- WHN 19990816
350 ;;; When this variable is non-NIL, byte-swapping is enabled wherever
351 ;;; classic GENESIS would have done it. I.e. the value of this variable
352 ;;; is the logical complement of
353 ;;; (EQ (SB!C:BACKEND-BYTE-ORDER SB!C:*NATIVE-BACKEND*)
354 ;;; (SB!C:BACKEND-BYTE-ORDER SB!C:*BACKEND*))
356 (defvar *genesis-byte-order-swap-p*)
358 ;;;; miscellaneous stuff to read and write the core memory
360 ;;; FIXME: should be DEFINE-MODIFY-MACRO
361 (defmacro cold-push (thing list)
363 "Push THING onto the given cold-load LIST."
364 `(setq ,list (cold-cons ,thing ,list)))
366 (defun maybe-byte-swap (word)
367 (declare (type (unsigned-byte 32) word))
368 (assert (= sb!vm:word-bits 32))
369 (assert (= sb!vm:byte-bits 8))
370 (if (not *genesis-byte-order-swap-p*)
372 (logior (ash (ldb (byte 8 0) word) 24)
373 (ash (ldb (byte 8 8) word) 16)
374 (ash (ldb (byte 8 16) word) 8)
375 (ldb (byte 8 24) word))))
377 (defun maybe-byte-swap-short (short)
378 (declare (type (unsigned-byte 16) short))
379 (assert (= sb!vm:word-bits 32))
380 (assert (= sb!vm:byte-bits 8))
381 (if (not *genesis-byte-order-swap-p*)
383 (logior (ash (ldb (byte 8 0) short) 8)
384 (ldb (byte 8 8) short))))
386 ;;; like SAP-REF-32, except that instead of a SAP we use a byte vector
387 (defun byte-vector-ref-32 (byte-vector byte-index)
388 (assert (= sb!vm:word-bits 32))
389 (assert (= sb!vm:byte-bits 8))
390 (ecase sb!c:*backend-byte-order*
392 (logior (ash (aref byte-vector (+ byte-index 0)) 0)
393 (ash (aref byte-vector (+ byte-index 1)) 8)
394 (ash (aref byte-vector (+ byte-index 2)) 16)
395 (ash (aref byte-vector (+ byte-index 3)) 24)))
397 (error "stub: no big-endian ports of SBCL (yet?)"))))
398 (defun (setf byte-vector-ref-32) (new-value byte-vector byte-index)
399 (assert (= sb!vm:word-bits 32))
400 (assert (= sb!vm:byte-bits 8))
401 (ecase sb!c:*backend-byte-order*
403 (setf (aref byte-vector (+ byte-index 0)) (ldb (byte 8 0) new-value)
404 (aref byte-vector (+ byte-index 1)) (ldb (byte 8 8) new-value)
405 (aref byte-vector (+ byte-index 2)) (ldb (byte 8 16) new-value)
406 (aref byte-vector (+ byte-index 3)) (ldb (byte 8 24) new-value)))
408 (error "stub: no big-endian ports of SBCL (yet?)")))
411 (declaim (ftype (function (descriptor sb!vm:word) descriptor) read-wordindexed))
412 (defun read-wordindexed (address index)
414 "Return the value which is displaced by INDEX words from ADDRESS."
415 (let* ((gspace (descriptor-intuit-gspace address))
416 (bytes (gspace-bytes gspace))
417 (byte-index (ash (+ index (descriptor-word-offset address))
419 ;; KLUDGE: Do we really need to do byte swap here? It seems
420 ;; as though we shouldn't.. (This attempts to be a literal
421 ;; translation of CMU CL code, and I don't have a big-endian
422 ;; machine to test it.) -- WHN 19990817
423 (value (maybe-byte-swap (byte-vector-ref-32 bytes byte-index))))
424 (make-random-descriptor value)))
426 (declaim (ftype (function (descriptor) descriptor) read-memory))
427 (defun read-memory (address)
429 "Return the value at ADDRESS."
430 (read-wordindexed address 0))
432 ;;; (Note: In CMU CL, this function expected a SAP-typed ADDRESS
433 ;;; value, instead of the SAPINT we use here.)
434 (declaim (ftype (function (sb!vm:word descriptor) (values)) note-load-time-value-reference))
435 (defun note-load-time-value-reference (address marker)
436 (cold-push (cold-cons
437 (cold-intern :load-time-value-fixup)
438 (cold-cons (sapint-to-core address)
440 (number-to-core (descriptor-word-offset marker))
442 *current-reversed-cold-toplevels*)
445 (declaim (ftype (function (descriptor sb!vm:word descriptor)) write-wordindexed))
446 (defun write-wordindexed (address index value)
448 "Write VALUE displaced INDEX words from ADDRESS."
449 ;; KLUDGE: There is an algorithm (used in DESCRIPTOR-INTUIT-GSPACE)
450 ;; for calculating the value of the GSPACE slot from scratch. It
451 ;; doesn't work for all values, only some of them, but mightn't it
452 ;; be reasonable to see whether it works on VALUE before we give up
453 ;; because (DESCRIPTOR-GSPACE VALUE) isn't set? (Or failing that,
454 ;; perhaps write a comment somewhere explaining why it's not a good
455 ;; idea?) -- WHN 19990817
456 (if (and (null (descriptor-gspace value))
457 (not (null (descriptor-word-offset value))))
458 (note-load-time-value-reference (+ (logandc2 (descriptor-bits address)
460 (ash index sb!vm:word-shift))
462 ;; Note: There's a MAYBE-BYTE-SWAP in here in CMU CL, which I
463 ;; think is unnecessary now that we're doing the write
464 ;; byte-by-byte at high level. (I can't test this, though..) --
466 (let* ((bytes (gspace-bytes (descriptor-intuit-gspace address)))
467 (byte-index (ash (+ index (descriptor-word-offset address))
469 (setf (byte-vector-ref-32 bytes byte-index)
470 (maybe-byte-swap (descriptor-bits value))))))
472 (declaim (ftype (function (descriptor descriptor)) write-memory))
473 (defun write-memory (address value)
475 "Write VALUE (a DESCRIPTOR) at ADDRESS (also a DESCRIPTOR)."
476 (write-wordindexed address 0 value))
478 ;;;; allocating images of primitive objects in the cold core
480 ;;; There are three kinds of blocks of memory in the type system:
481 ;;; * Boxed objects (cons cells, structures, etc): These objects have no
482 ;;; header as all slots are descriptors.
483 ;;; * Unboxed objects (bignums): There is a single header word that contains
485 ;;; * Vector objects: There is a header word with the type, then a word for
486 ;;; the length, then the data.
487 (defun allocate-boxed-object (gspace length lowtag)
489 "Allocate LENGTH words in GSPACE and return a new descriptor of type LOWTAG
491 (allocate-descriptor gspace (ash length sb!vm:word-shift) lowtag))
492 (defun allocate-unboxed-object (gspace element-bits length type)
494 "Allocate LENGTH units of ELEMENT-BITS bits plus a header word in GSPACE and
495 return an ``other-pointer'' descriptor to them. Initialize the header word
496 with the resultant length and TYPE."
497 (let* ((bytes (/ (* element-bits length) sb!vm:byte-bits))
498 (des (allocate-descriptor gspace
499 (+ bytes sb!vm:word-bytes)
500 sb!vm:other-pointer-type)))
502 (make-other-immediate-descriptor (ash bytes
503 (- sb!vm:word-shift))
506 (defun allocate-vector-object (gspace element-bits length type)
508 "Allocate LENGTH units of ELEMENT-BITS size plus a header plus a length slot in
509 GSPACE and return an ``other-pointer'' descriptor to them. Initialize the
510 header word with TYPE and the length slot with LENGTH."
511 ;; FIXME: Here and in ALLOCATE-UNBOXED-OBJECT, BYTES is calculated using
512 ;; #'/ instead of #'CEILING, which seems wrong.
513 (let* ((bytes (/ (* element-bits length) sb!vm:byte-bits))
514 (des (allocate-descriptor gspace (+ bytes (* 2 sb!vm:word-bytes))
515 sb!vm:other-pointer-type)))
516 (write-memory des (make-other-immediate-descriptor 0 type))
517 (write-wordindexed des
518 sb!vm:vector-length-slot
519 (make-fixnum-descriptor length))
522 ;;;; copying simple objects into the cold core
524 (defun string-to-core (string &optional (gspace *dynamic*))
526 "Copy string into the cold core and return a descriptor to it."
527 ;; (Remember that the system convention for storage of strings leaves an
528 ;; extra null byte at the end to aid in call-out to C.)
529 (let* ((length (length string))
530 (des (allocate-vector-object gspace
533 sb!vm:simple-string-type))
534 (bytes (gspace-bytes gspace))
535 (offset (+ (* sb!vm:vector-data-offset sb!vm:word-bytes)
536 (descriptor-byte-offset des))))
537 (write-wordindexed des
538 sb!vm:vector-length-slot
539 (make-fixnum-descriptor length))
541 (setf (aref bytes (+ offset i))
542 ;; KLUDGE: There's no guarantee that the character
543 ;; encoding here will be the same as the character
544 ;; encoding on the target machine, so using CHAR-CODE as
545 ;; we do, or a bitwise copy as CMU CL code did, is sleazy.
546 ;; (To make this more portable, perhaps we could use
547 ;; indices into the sequence which is used to test whether
548 ;; a character is a STANDARD-CHAR?) -- WHN 19990817
549 (char-code (aref string i))))
550 (setf (aref bytes (+ offset length))
551 0) ; null string-termination character for C
554 (defun bignum-to-core (n)
556 "Copy a bignum to the cold core."
557 (let* ((words (ceiling (1+ (integer-length n)) sb!vm:word-bits))
558 (handle (allocate-unboxed-object *dynamic*
562 (declare (fixnum words))
563 (do ((index 1 (1+ index))
564 (remainder n (ash remainder (- sb!vm:word-bits))))
566 (unless (zerop (integer-length remainder))
567 ;; FIXME: Shouldn't this be a fatal error?
568 (warn "~D words of ~D were written, but ~D bits were left over."
570 (let ((word (ldb (byte sb!vm:word-bits 0) remainder)))
571 (write-wordindexed handle index
572 (make-descriptor (ash word (- descriptor-low-bits))
573 (ldb (byte descriptor-low-bits 0)
577 (defun number-pair-to-core (first second type)
579 "Makes a number pair of TYPE (ratio or complex) and fills it in."
580 (let ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits 2 type)))
581 (write-wordindexed des 1 first)
582 (write-wordindexed des 2 second)
585 (defun float-to-core (x)
588 (let ((des (allocate-unboxed-object *dynamic*
590 (1- sb!vm:single-float-size)
591 sb!vm:single-float-type)))
592 (write-wordindexed des
593 sb!vm:single-float-value-slot
594 (make-random-descriptor (single-float-bits x)))
597 (let ((des (allocate-unboxed-object *dynamic*
599 (1- sb!vm:double-float-size)
600 sb!vm:double-float-type))
601 (high-bits (make-random-descriptor (double-float-high-bits x)))
602 (low-bits (make-random-descriptor (double-float-low-bits x))))
603 (ecase sb!c:*backend-byte-order*
605 (write-wordindexed des sb!vm:double-float-value-slot low-bits)
606 (write-wordindexed des (1+ sb!vm:double-float-value-slot) high-bits))
608 (write-wordindexed des sb!vm:double-float-value-slot high-bits)
609 (write-wordindexed des (1+ sb!vm:double-float-value-slot) low-bits)))
611 #!+(and long-float x86)
613 (let ((des (allocate-unboxed-object *dynamic*
615 (1- sb!vm:long-float-size)
616 sb!vm:long-float-type))
617 (exp-bits (make-random-descriptor (long-float-exp-bits x)))
618 (high-bits (make-random-descriptor (long-float-high-bits x)))
619 (low-bits (make-random-descriptor (long-float-low-bits x))))
620 (ecase sb!c:*backend-byte-order*
622 (write-wordindexed des sb!vm:long-float-value-slot low-bits)
623 (write-wordindexed des (1+ sb!vm:long-float-value-slot) high-bits)
624 (write-wordindexed des (+ 2 sb!vm:long-float-value-slot) exp-bits))
626 (error "LONG-FLOAT is not supported for big-endian byte order.")))
629 (defun complex-single-float-to-core (num)
630 (declare (type (complex single-float) num))
631 (let ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits
632 (1- sb!vm:complex-single-float-size)
633 sb!vm:complex-single-float-type)))
634 (write-wordindexed des sb!vm:complex-single-float-real-slot
635 (make-random-descriptor (single-float-bits (realpart num))))
636 (write-wordindexed des sb!vm:complex-single-float-imag-slot
637 (make-random-descriptor (single-float-bits (imagpart num))))
640 (defun complex-double-float-to-core (num)
641 (declare (type (complex double-float) num))
642 (let ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits
643 (1- sb!vm:complex-double-float-size)
644 sb!vm:complex-double-float-type)))
645 (let* ((real (realpart num))
646 (high-bits (make-random-descriptor (double-float-high-bits real)))
647 (low-bits (make-random-descriptor (double-float-low-bits real))))
648 (ecase sb!c:*backend-byte-order*
650 (write-wordindexed des sb!vm:complex-double-float-real-slot low-bits)
651 (write-wordindexed des (1+ sb!vm:complex-double-float-real-slot) high-bits))
653 (write-wordindexed des sb!vm:complex-double-float-real-slot high-bits)
654 (write-wordindexed des (1+ sb!vm:complex-double-float-real-slot) low-bits))))
655 (let* ((imag (imagpart num))
656 (high-bits (make-random-descriptor (double-float-high-bits imag)))
657 (low-bits (make-random-descriptor (double-float-low-bits imag))))
658 (ecase sb!c:*backend-byte-order*
660 (write-wordindexed des sb!vm:complex-double-float-imag-slot low-bits)
661 (write-wordindexed des (1+ sb!vm:complex-double-float-imag-slot) high-bits))
663 (write-wordindexed des sb!vm:complex-double-float-imag-slot high-bits)
664 (write-wordindexed des (1+ sb!vm:complex-double-float-imag-slot) low-bits))))
667 (defun number-to-core (number)
669 "Copy the given number to the core, or flame out if we can't deal with it."
671 (integer (if (< (integer-length number) 30)
672 (make-fixnum-descriptor number)
673 (bignum-to-core number)))
674 (ratio (number-pair-to-core (number-to-core (numerator number))
675 (number-to-core (denominator number))
677 ((complex single-float) (complex-single-float-to-core number))
678 ((complex double-float) (complex-double-float-to-core number))
680 ((complex long-float)
681 (error "~S isn't a cold-loadable number at all!" number))
682 (complex (number-pair-to-core (number-to-core (realpart number))
683 (number-to-core (imagpart number))
685 (float (float-to-core number))
686 (t (error "~S isn't a cold-loadable number at all!" number))))
688 (declaim (ftype (function (sb!vm:word) descriptor) sap-to-core))
689 (defun sapint-to-core (sapint)
690 (let ((des (allocate-unboxed-object *dynamic*
694 (write-wordindexed des
695 sb!vm:sap-pointer-slot
696 (make-random-descriptor sapint))
699 ;;; Allocate a cons cell in GSPACE and fill it in with CAR and CDR.
700 (defun cold-cons (car cdr &optional (gspace *dynamic*))
701 (let ((dest (allocate-boxed-object gspace 2 sb!vm:list-pointer-type)))
702 (write-memory dest car)
703 (write-wordindexed dest 1 cdr)
706 ;;; Make a simple-vector that holds the specified OBJECTS, and return its
708 (defun vector-in-core (&rest objects)
709 (let* ((size (length objects))
710 (result (allocate-vector-object *dynamic* sb!vm:word-bits size
711 sb!vm:simple-vector-type)))
712 (dotimes (index size)
713 (write-wordindexed result (+ index sb!vm:vector-data-offset)
719 ;;; FIXME: This should be a keyword argument of ALLOCATE-SYMBOL.
720 (defvar *cold-symbol-allocation-gspace* nil)
722 ;;; Allocate (and initialize) a symbol.
723 (defun allocate-symbol (name)
724 (declare (simple-string name))
725 (let ((symbol (allocate-unboxed-object (or *cold-symbol-allocation-gspace*
728 (1- sb!vm:symbol-size)
729 sb!vm:symbol-header-type)))
730 (write-wordindexed symbol sb!vm:symbol-value-slot *unbound-marker*)
732 (write-wordindexed symbol
733 sb!vm:symbol-hash-slot
734 (make-fixnum-descriptor
735 (1+ (random sb!vm:*target-most-positive-fixnum*))))
736 (write-wordindexed symbol sb!vm:symbol-plist-slot *nil-descriptor*)
737 (write-wordindexed symbol sb!vm:symbol-name-slot
738 (string-to-core name *dynamic*))
739 (write-wordindexed symbol sb!vm:symbol-package-slot *nil-descriptor*)
742 ;;; Set the cold symbol value of SYMBOL-OR-SYMBOL-DES, which can be either a
743 ;;; descriptor of a cold symbol or (in an abbreviation for the
744 ;;; most common usage pattern) an ordinary symbol, which will be
745 ;;; automatically cold-interned.
746 (declaim (ftype (function ((or descriptor symbol) descriptor)) cold-set))
747 (defun cold-set (symbol-or-symbol-des value)
748 (let ((symbol-des (etypecase symbol-or-symbol-des
749 (descriptor symbol-or-symbol-des)
750 (symbol (cold-intern symbol-or-symbol-des)))))
751 (write-wordindexed symbol-des sb!vm:symbol-value-slot value)))
753 ;;;; layouts and type system pre-initialization
755 ;;; Since we want to be able to dump structure constants and
756 ;;; predicates with reference layouts, we need to create layouts at
757 ;;; cold-load time. We use the name to intern layouts by, and dump a
758 ;;; list of all cold layouts in *!INITIAL-LAYOUTS* so that type system
759 ;;; initialization can find them. The only thing that's tricky [sic --
760 ;;; WHN 19990816] is initializing layout's layout, which must point to
763 ;;; a map from class names to lists of
764 ;;; `(,descriptor ,name ,length ,inherits ,depth)
765 ;;; KLUDGE: It would be more understandable and maintainable to use
766 ;;; DEFSTRUCT (:TYPE LIST) here. -- WHN 19990823
767 (defvar *cold-layouts* (make-hash-table :test 'equal))
769 ;;; a map from DESCRIPTOR-BITS of cold layouts to the name, for inverting
771 (defvar *cold-layout-names* (make-hash-table :test 'eql))
773 ;;; FIXME: *COLD-LAYOUTS* and *COLD-LAYOUT-NAMES* should be
774 ;;; initialized by binding in GENESIS.
776 ;;; the descriptor for layout's layout (needed when making layouts)
777 (defvar *layout-layout*)
779 ;;; FIXME: This information should probably be pulled out of the
780 ;;; cross-compiler's tables at genesis time instead of inserted by
781 ;;; hand here as a bare numeric constant.
782 (defconstant target-layout-length 16)
784 ;;; Return a list of names created from the cold layout INHERITS data
786 (defun listify-cold-inherits (x)
787 (let ((len (descriptor-fixnum (read-wordindexed x
788 sb!vm:vector-length-slot))))
791 (let* ((des (read-wordindexed x (+ sb!vm:vector-data-offset index)))
792 (found (gethash (descriptor-bits des) *cold-layout-names*)))
795 (error "unknown descriptor at index ~S (bits = ~8,'0X)"
797 (descriptor-bits des)))))
800 (declaim (ftype (function (symbol descriptor descriptor descriptor) descriptor)
802 (defun make-cold-layout (name length inherits depthoid)
803 (let ((result (allocate-boxed-object *dynamic*
804 ;; KLUDGE: Why 1+? -- WHN 19990901
805 (1+ target-layout-length)
806 sb!vm:instance-pointer-type)))
808 (make-other-immediate-descriptor target-layout-length
809 sb!vm:instance-header-type))
811 ;; KLUDGE: The offsets into LAYOUT below should probably be pulled out
812 ;; of the cross-compiler's tables at genesis time instead of inserted
813 ;; by hand as bare numeric constants. -- WHN ca. 19990901
815 ;; Set slot 0 = the layout of the layout.
816 (write-wordindexed result sb!vm:instance-slots-offset *layout-layout*)
818 ;; Set the immediately following slots = CLOS hash values.
820 ;; Note: CMU CL didn't set these in genesis, but instead arranged
821 ;; for them to be set at cold init time. That resulted in slightly
822 ;; kludgy-looking code, but there were at least two things to be
824 ;; 1. It put the hash values under the control of the target Lisp's
825 ;; RANDOM function, so that CLOS behavior would be nearly
826 ;; deterministic (instead of depending on the implementation of
827 ;; RANDOM in the cross-compilation host, and the state of its
828 ;; RNG when genesis begins).
829 ;; 2. It automatically ensured that all hash values in the target Lisp
830 ;; were part of the same sequence, so that we didn't have to worry
831 ;; about the possibility of the first hash value set in genesis
832 ;; being precisely equal to the some hash value set in cold init time
833 ;; (because the target Lisp RNG has advanced to precisely the same
834 ;; state that the host Lisp RNG was in earlier).
835 ;; Point 1 should not be an issue in practice because of the way we do our
836 ;; build procedure in two steps, so that the SBCL that we end up with has
837 ;; been created by another SBCL (whose RNG is under our control).
838 ;; Point 2 is more of an issue. If ANSI had provided a way to feed
839 ;; entropy into an RNG, we would have no problem: we'd just feed
840 ;; some specialized genesis-time-only pattern into the RNG state
841 ;; before using it. However, they didn't, so we have a slight
842 ;; problem. We address it by generating the hash values using a
843 ;; different algorithm than we use in ordinary operation.
844 (dotimes (i sb!kernel:layout-clos-hash-length)
845 (let (;; The expression here is pretty arbitrary, we just want
846 ;; to make sure that it's not something which is (1)
847 ;; evenly distributed and (2) not foreordained to arise in
848 ;; the target Lisp's (RANDOM-LAYOUT-CLOS-HASH) sequence
849 ;; and show up as the CLOS-HASH value of some other
852 ;; FIXME: This expression here can generate a zero value,
853 ;; and the CMU CL code goes out of its way to generate
854 ;; strictly positive values (even though the field is
855 ;; declared as an INDEX). Check that it's really OK to
856 ;; have zero values in the CLOS-HASH slots.
857 (hash-value (mod (logxor (logand (random-layout-clos-hash) 15253)
858 (logandc2 (random-layout-clos-hash) 15253)
860 ;; (The MOD here is defensive programming
861 ;; to make sure we never write an
862 ;; out-of-range value even if some joker
863 ;; sets LAYOUT-CLOS-HASH-MAX to other
864 ;; than 2^n-1 at some time in the
866 (1+ sb!kernel:layout-clos-hash-max))))
867 (write-wordindexed result
868 (+ i sb!vm:instance-slots-offset 1)
869 (make-fixnum-descriptor hash-value))))
871 ;; Set other slot values.
872 (let ((base (+ sb!vm:instance-slots-offset
873 sb!kernel:layout-clos-hash-length
875 ;; (Offset 0 is CLASS, "the class this is a layout for", which
876 ;; is uninitialized at this point.)
877 (write-wordindexed result (+ base 1) *nil-descriptor*) ; marked invalid
878 (write-wordindexed result (+ base 2) inherits)
879 (write-wordindexed result (+ base 3) depthoid)
880 (write-wordindexed result (+ base 4) length)
881 (write-wordindexed result (+ base 5) *nil-descriptor*) ; info
882 (write-wordindexed result (+ base 6) *nil-descriptor*)) ; pure
884 (setf (gethash name *cold-layouts*)
887 (descriptor-fixnum length)
888 (listify-cold-inherits inherits)
889 (descriptor-fixnum depthoid)))
890 (setf (gethash (descriptor-bits result) *cold-layout-names*) name)
894 (defun initialize-layouts ()
896 (clrhash *cold-layouts*)
898 ;; We initially create the layout of LAYOUT itself with NIL as the LAYOUT and
900 (setq *layout-layout* *nil-descriptor*)
901 (setq *layout-layout*
902 (make-cold-layout 'layout
903 (number-to-core target-layout-length)
905 ;; FIXME: hard-coded LAYOUT-DEPTHOID of LAYOUT..
907 (write-wordindexed *layout-layout*
908 sb!vm:instance-slots-offset
911 ;; Then we create the layouts that we'll need to make a correct INHERITS
912 ;; vector for the layout of LAYOUT itself..
914 ;; FIXME: The various LENGTH and DEPTHOID numbers should be taken from
915 ;; the compiler's tables, not set by hand.
922 (make-cold-layout 'instance
924 (vector-in-core t-layout)
927 (make-cold-layout 'structure-object
929 (vector-in-core t-layout i-layout)
932 (make-cold-layout 'structure!object
934 (vector-in-core t-layout i-layout so-layout)
936 (layout-inherits (vector-in-core t-layout
941 ;; ..and return to backpatch the layout of LAYOUT.
942 (setf (fourth (gethash 'layout *cold-layouts*))
943 (listify-cold-inherits layout-inherits))
944 (write-wordindexed *layout-layout*
945 ;; FIXME: hardcoded offset into layout struct
946 (+ sb!vm:instance-slots-offset
947 layout-clos-hash-length
952 ;;;; interning symbols in the cold image
954 ;;; In order to avoid having to know about the package format, we
955 ;;; build a data structure in *COLD-PACKAGE-SYMBOLS* that holds all
956 ;;; interned symbols along with info about their packages. The data
957 ;;; structure is a list of sublists, where the sublists have the
958 ;;; following format:
959 ;;; (<make-package-arglist>
960 ;;; <internal-symbols>
961 ;;; <external-symbols>
962 ;;; <imported-internal-symbols>
963 ;;; <imported-external-symbols>
964 ;;; <shadowing-symbols>)
966 ;;; KLUDGE: It would be nice to implement the sublists as instances of
967 ;;; a DEFSTRUCT (:TYPE LIST). (They'd still be lists, but at least we'd be
968 ;;; using mnemonically-named operators to access them, instead of trying
969 ;;; to remember what THIRD and FIFTH mean, and hoping that we never
970 ;;; need to change the list layout..) -- WHN 19990825
972 ;;; an alist from packages to lists of that package's symbols to be dumped
973 (defvar *cold-package-symbols*)
974 (declaim (type list *cold-package-symbols*))
976 ;;; a map from descriptors to symbols, so that we can back up. The key is the
977 ;;; address in the target core.
978 (defvar *cold-symbols*)
979 (declaim (type hash-table *cold-symbols*))
981 ;;; Return a handle on an interned symbol. If necessary allocate the
982 ;;; symbol and record which package the symbol was referenced in. When
983 ;;; we allocate the symbol, make sure we record a reference to the
984 ;;; symbol in the home package so that the package gets set.
985 (defun cold-intern (symbol &optional (package (symbol-package symbol)))
987 ;; Anything on the cross-compilation host which refers to the target
988 ;; machinery through the host SB-XC package can be translated to
989 ;; something on the target which refers to the same machinery
990 ;; through the target COMMON-LISP package.
991 (let ((p (find-package "SB-XC")))
993 (setf package *cl-package*))
994 (when (eq (symbol-package symbol) p)
995 (setf symbol (intern (symbol-name symbol) *cl-package*))))
997 (let (;; Information about each cold-interned symbol is stored
998 ;; in COLD-INTERN-INFO.
999 ;; (CAR COLD-INTERN-INFO) = descriptor of symbol
1000 ;; (CDR COLD-INTERN-INFO) = list of packages, other than symbol's
1001 ;; own package, referring to symbol
1002 ;; (*COLD-PACKAGE-SYMBOLS* and *COLD-SYMBOLS* store basically the same
1003 ;; information, but with the mapping running the opposite way.)
1004 (cold-intern-info (get symbol 'cold-intern-info)))
1005 (unless cold-intern-info
1006 (cond ((eq (symbol-package symbol) package)
1007 (let ((handle (allocate-symbol (symbol-name symbol))))
1008 (setf (gethash (descriptor-bits handle) *cold-symbols*) symbol)
1009 (when (eq package *keyword-package*)
1010 (cold-set handle handle))
1011 (setq cold-intern-info
1012 (setf (get symbol 'cold-intern-info) (cons handle nil)))))
1014 (cold-intern symbol)
1015 (setq cold-intern-info (get symbol 'cold-intern-info)))))
1016 (unless (or (null package)
1017 (member package (cdr cold-intern-info)))
1018 (push package (cdr cold-intern-info))
1019 (let* ((old-cps-entry (assoc package *cold-package-symbols*))
1020 (cps-entry (or old-cps-entry
1021 (car (push (list package)
1022 *cold-package-symbols*)))))
1023 (unless old-cps-entry
1024 (/show "created *COLD-PACKAGE-SYMBOLS* entry for" package symbol))
1025 (push symbol (rest cps-entry))))
1026 (car cold-intern-info)))
1028 ;;; Construct and return a value for use as *NIL-DESCRIPTOR*.
1029 (defun make-nil-descriptor ()
1030 (let* ((des (allocate-unboxed-object
1035 (result (make-descriptor (descriptor-high des)
1036 (+ (descriptor-low des)
1037 (* 2 sb!vm:word-bytes)
1038 (- sb!vm:list-pointer-type
1039 sb!vm:other-pointer-type)))))
1040 (write-wordindexed des
1042 (make-other-immediate-descriptor
1044 sb!vm:symbol-header-type))
1045 (write-wordindexed des
1046 (+ 1 sb!vm:symbol-value-slot)
1048 (write-wordindexed des
1049 (+ 2 sb!vm:symbol-value-slot)
1051 (write-wordindexed des
1052 (+ 1 sb!vm:symbol-plist-slot)
1054 (write-wordindexed des
1055 (+ 1 sb!vm:symbol-name-slot)
1056 ;; This is *DYNAMIC*, and DES is *STATIC*,
1057 ;; because that's the way CMU CL did it; I'm
1058 ;; not sure whether there's an underlying
1059 ;; reason. -- WHN 1990826
1060 (string-to-core "NIL" *dynamic*))
1061 (write-wordindexed des
1062 (+ 1 sb!vm:symbol-package-slot)
1064 (setf (get nil 'cold-intern-info)
1069 ;;; Since the initial symbols must be allocated before we can intern
1070 ;;; anything else, we intern those here. We also set the value of T.
1071 (defun initialize-non-nil-symbols ()
1073 "Initialize the cold load symbol-hacking data structures."
1074 (let ((*cold-symbol-allocation-gspace* *static*))
1075 ;; Intern the others.
1076 (dolist (symbol sb!vm:*static-symbols*)
1077 (let* ((des (cold-intern symbol))
1078 (offset-wanted (sb!vm:static-symbol-offset symbol))
1079 (offset-found (- (descriptor-low des)
1080 (descriptor-low *nil-descriptor*))))
1081 (unless (= offset-wanted offset-found)
1082 ;; FIXME: should be fatal
1083 (warn "Offset from ~S to ~S is ~D, not ~D"
1088 ;; Establish the value of T.
1089 (let ((t-symbol (cold-intern t)))
1090 (cold-set t-symbol t-symbol))))
1092 ;;; a helper function for FINISH-SYMBOLS: Return a cold alist suitable
1093 ;;; to be stored in *!INITIAL-LAYOUTS*.
1094 (defun cold-list-all-layouts ()
1095 (let ((result *nil-descriptor*))
1096 (maphash (lambda (key stuff)
1097 (cold-push (cold-cons (cold-intern key)
1103 ;;; Establish initial values for magic symbols.
1105 ;;; Scan over all the symbols referenced in each package in
1106 ;;; *COLD-PACKAGE-SYMBOLS* making that for each one there's an
1107 ;;; appropriate entry in the *!INITIAL-SYMBOLS* data structure to
1109 (defun finish-symbols ()
1111 ;; FIXME: Why use SETQ (setting symbol value) instead of just using
1112 ;; the function values for these things?? I.e. why do we need this
1113 ;; section at all? Is it because all the FDEFINITION stuff gets in
1114 ;; the way of reading function values and is too hairy to rely on at
1115 ;; cold boot? FIXME: 5/6 of these are in *STATIC-SYMBOLS* in
1116 ;; parms.lisp, but %HANDLE-FUNCTION-END-BREAKPOINT is not. Why?
1118 (macrolet ((frob (symbol)
1120 (cold-fdefinition-object (cold-intern ',symbol)))))
1122 (frob sb!impl::maybe-gc)
1123 (frob internal-error)
1124 (frob sb!di::handle-breakpoint)
1125 (frob sb!di::handle-function-end-breakpoint)
1126 (frob sb!impl::fdefinition-object))
1128 (cold-set '*current-catch-block* (make-fixnum-descriptor 0))
1129 (cold-set '*current-unwind-protect-block* (make-fixnum-descriptor 0))
1130 (cold-set '*eval-stack-top* (make-fixnum-descriptor 0))
1132 (cold-set '*free-interrupt-context-index* (make-fixnum-descriptor 0))
1134 ;; FIXME: *!INITIAL-LAYOUTS* should be exported from SB!KERNEL, or
1135 ;; perhaps from SB-LD.
1136 (cold-set 'sb!kernel::*!initial-layouts* (cold-list-all-layouts))
1138 (/show "dumping packages" (mapcar #'car *cold-package-symbols*))
1139 (let ((initial-symbols *nil-descriptor*))
1140 (dolist (cold-package-symbols-entry *cold-package-symbols*)
1141 (let* ((cold-package (car cold-package-symbols-entry))
1142 (symbols (cdr cold-package-symbols-entry))
1143 (shadows (package-shadowing-symbols cold-package))
1144 (internal *nil-descriptor*)
1145 (external *nil-descriptor*)
1146 (imported-internal *nil-descriptor*)
1147 (imported-external *nil-descriptor*)
1148 (shadowing *nil-descriptor*))
1149 (/show "dumping" cold-package symbols)
1151 ;; FIXME: Add assertions here to make sure that inappropriate stuff
1152 ;; isn't being dumped:
1153 ;; * the CL-USER package
1154 ;; * the SB-COLD package
1155 ;; * any internal symbols in the CL package
1156 ;; * basically any package other than CL, KEYWORD, or the packages
1157 ;; in package-data-list.lisp-expr
1158 ;; and that the structure of the KEYWORD package (e.g. whether
1159 ;; any symbols are internal to it) matches what we want in the
1162 ;; FIXME: It seems possible that by looking at the contents of
1163 ;; packages in the target SBCL we could find which symbols in
1164 ;; package-data-lisp.lisp-expr are now obsolete. (If I
1165 ;; understand correctly, only symbols which actually have
1166 ;; definitions or which are otherwise referred to actually end
1167 ;; up in the target packages.)
1169 (dolist (symbol symbols)
1170 (let ((handle (car (get symbol 'cold-intern-info)))
1171 (imported-p (not (eq (symbol-package symbol) cold-package))))
1172 (multiple-value-bind (found where)
1173 (find-symbol (symbol-name symbol) cold-package)
1174 (unless (and where (eq found symbol))
1175 (error "The symbol ~S is not available in ~S."
1178 (when (memq symbol shadows)
1179 (cold-push handle shadowing))
1181 (:internal (if imported-p
1182 (cold-push handle imported-internal)
1183 (cold-push handle internal)))
1184 (:external (if imported-p
1185 (cold-push handle imported-external)
1186 (cold-push handle external)))))))
1187 (let ((r *nil-descriptor*))
1188 (cold-push shadowing r)
1189 (cold-push imported-external r)
1190 (cold-push imported-internal r)
1191 (cold-push external r)
1192 (cold-push internal r)
1193 (cold-push (make-make-package-args cold-package) r)
1194 ;; FIXME: It would be more space-efficient to use vectors
1195 ;; instead of lists here, and space-efficiency here would be
1196 ;; nice, since it would reduce the peak memory usage in
1197 ;; genesis and cold init.
1198 (cold-push r initial-symbols))))
1199 (cold-set '*!initial-symbols* initial-symbols))
1201 (cold-set '*!initial-fdefn-objects* (list-all-fdefn-objects))
1203 (cold-set '*!reversed-cold-toplevels* *current-reversed-cold-toplevels*)
1207 (cold-set 'sb!vm::*fp-constant-0d0* (number-to-core 0d0))
1208 (cold-set 'sb!vm::*fp-constant-1d0* (number-to-core 1d0))
1209 (cold-set 'sb!vm::*fp-constant-0s0* (number-to-core 0s0))
1210 (cold-set 'sb!vm::*fp-constant-1s0* (number-to-core 1s0))
1213 (cold-set 'sb!vm::*fp-constant-0l0* (number-to-core 0L0))
1214 (cold-set 'sb!vm::*fp-constant-1l0* (number-to-core 1L0))
1215 ;; FIXME: Why is initialization of PI conditional on LONG-FLOAT?
1216 ;; (ditto LG2, LN2, L2E, etc.)
1217 (cold-set 'sb!vm::*fp-constant-pi* (number-to-core pi))
1218 (cold-set 'sb!vm::*fp-constant-l2t* (number-to-core (log 10L0 2L0)))
1219 (cold-set 'sb!vm::*fp-constant-l2e*
1220 (number-to-core (log 2.718281828459045235360287471352662L0 2L0)))
1221 (cold-set 'sb!vm::*fp-constant-lg2* (number-to-core (log 2L0 10L0)))
1222 (cold-set 'sb!vm::*fp-constant-ln2*
1224 (log 2L0 2.718281828459045235360287471352662L0))))
1226 (cold-set 'sb!vm::*SCAVENGE-READ-ONLY-GSPACE* *nil-descriptor*)))
1228 ;;; Make a cold list that can be used as the arg list to MAKE-PACKAGE in order
1229 ;;; to make a package that is similar to PKG.
1230 (defun make-make-package-args (pkg)
1231 (let* ((use *nil-descriptor*)
1232 (cold-nicknames *nil-descriptor*)
1233 (res *nil-descriptor*))
1234 (dolist (u (package-use-list pkg))
1235 (when (assoc u *cold-package-symbols*)
1236 (cold-push (string-to-core (package-name u)) use)))
1237 (let* ((pkg-name (package-name pkg))
1238 ;; Make the package nickname lists for the standard packages
1239 ;; be the minimum specified by ANSI, regardless of what value
1240 ;; the cross-compilation host happens to use.
1241 (warm-nicknames (cond ((string= pkg-name "COMMON-LISP")
1243 ((string= pkg-name "COMMON-LISP-USER")
1245 ((string= pkg-name "KEYWORD")
1247 ;; For packages other than the
1248 ;; standard packages, the nickname
1249 ;; list was specified by our package
1250 ;; setup code, not by properties of
1251 ;; what cross-compilation host we
1252 ;; happened to use, and we can just
1253 ;; propagate it into the target.
1255 (package-nicknames pkg)))))
1256 (dolist (warm-nickname warm-nicknames)
1257 (cold-push (string-to-core warm-nickname) cold-nicknames)))
1259 (cold-push (number-to-core (truncate (package-internal-symbol-count pkg)
1262 (cold-push (cold-intern :internal-symbols) res)
1263 (cold-push (number-to-core (truncate (package-external-symbol-count pkg)
1266 (cold-push (cold-intern :external-symbols) res)
1268 (cold-push cold-nicknames res)
1269 (cold-push (cold-intern :nicknames) res)
1272 (cold-push (cold-intern :use) res)
1274 (cold-push (string-to-core (package-name pkg)) res)
1277 ;;;; fdefinition objects
1279 ;;; a hash table mapping from fdefinition names to descriptors of cold
1280 ;;; objects. Note: Since fdefinition names can be lists like '(SETF
1281 ;;; FOO), and we want to have only one entry per name, this must be an
1282 ;;; 'EQUAL hash table, not the default 'EQL.
1283 (defvar *cold-fdefn-objects*)
1285 (defvar *cold-fdefn-gspace* nil)
1287 ;;; Given a cold representation of an FDEFN name, return a warm representation.
1289 ;;; Note: Despite the name, this actually has little to do with
1290 ;;; FDEFNs, it's just a function for warming up values, and the only
1291 ;;; values it knows how to warm up are symbols and lists. (The
1292 ;;; connection to FDEFNs is that symbols and lists are the only
1293 ;;; possible names for functions.)
1294 (declaim (ftype (function (descriptor) (or symbol list)) warm-fdefn-name))
1295 (defun warm-fdefn-name (des)
1296 (ecase (descriptor-lowtag des)
1297 (#.sb!vm:list-pointer-type ; FIXME: no #.
1298 (if (= (descriptor-bits des) (descriptor-bits *nil-descriptor*))
1300 ;; FIXME: If we cold-intern this again, we might get a different
1301 ;; name. Check to make sure that any hash tables along the way
1302 ;; are 'EQUAL not 'EQL.
1303 (cons (warm-fdefn-name (read-wordindexed des sb!vm:cons-car-slot))
1304 (warm-fdefn-name (read-wordindexed des sb!vm:cons-cdr-slot)))))
1305 (#.sb!vm:other-pointer-type ; FIXME: no #.
1306 (or (gethash (descriptor-bits des) *cold-symbols*)
1307 (descriptor-bits des)))))
1309 (defun cold-fdefinition-object (cold-name &optional leave-fn-raw)
1310 (declare (type descriptor cold-name))
1311 (let ((warm-name (warm-fdefn-name cold-name)))
1312 (or (gethash warm-name *cold-fdefn-objects*)
1313 (let ((fdefn (allocate-boxed-object (or *cold-fdefn-gspace* *dynamic*)
1314 (1- sb!vm:fdefn-size)
1315 sb!vm:other-pointer-type)))
1317 (setf (gethash warm-name *cold-fdefn-objects*) fdefn)
1318 (write-memory fdefn (make-other-immediate-descriptor
1319 (1- sb!vm:fdefn-size) sb!vm:fdefn-type))
1320 (write-wordindexed fdefn sb!vm:fdefn-name-slot cold-name)
1321 (unless leave-fn-raw
1322 (write-wordindexed fdefn sb!vm:fdefn-function-slot
1324 (write-wordindexed fdefn
1325 sb!vm:fdefn-raw-addr-slot
1326 (make-random-descriptor
1327 (lookup-foreign-symbol "undefined_tramp"))))
1330 (defun cold-fset (cold-name defn)
1331 (declare (type descriptor cold-name))
1332 (let ((fdefn (cold-fdefinition-object cold-name t))
1333 (type (logand (descriptor-low (read-memory defn)) sb!vm:type-mask)))
1334 (write-wordindexed fdefn sb!vm:fdefn-function-slot defn)
1335 (write-wordindexed fdefn
1336 sb!vm:fdefn-raw-addr-slot
1338 (#.sb!vm:function-header-type
1342 (make-random-descriptor
1343 (+ (logandc2 (descriptor-bits defn)
1345 (ash sb!vm:function-code-offset
1346 sb!vm:word-shift))))
1347 (#.sb!vm:closure-header-type
1348 (make-random-descriptor
1349 (lookup-foreign-symbol "closure_tramp")))))
1352 (defun initialize-static-fns ()
1353 (let ((*cold-fdefn-gspace* *static*))
1354 (dolist (sym sb!vm:*static-functions*)
1355 (let* ((fdefn (cold-fdefinition-object (cold-intern sym)))
1356 (offset (- (+ (- (descriptor-low fdefn)
1357 sb!vm:other-pointer-type)
1358 (* sb!vm:fdefn-raw-addr-slot sb!vm:word-bytes))
1359 (descriptor-low *nil-descriptor*)))
1360 (desired (sb!vm:static-function-offset sym)))
1361 (unless (= offset desired)
1362 ;; FIXME: should be fatal
1363 (warn "Offset from FDEFN ~S to ~S is ~D, not ~D."
1364 sym nil offset desired))))))
1366 (defun list-all-fdefn-objects ()
1367 (let ((result *nil-descriptor*))
1368 (maphash #'(lambda (key value)
1369 (declare (ignore key))
1370 (cold-push value result))
1371 *cold-fdefn-objects*)
1374 ;;;; fixups and related stuff
1376 ;;; an EQUAL hash table
1377 (defvar *cold-foreign-symbol-table*)
1378 (declaim (type hash-table *cold-foreign-symbol-table*))
1380 (defun load-foreign-symbol-table (filename)
1381 (with-open-file (file filename)
1383 (let ((line (read-line file nil nil)))
1386 ;; UNIX symbol tables might have tabs in them, and tabs are
1387 ;; not in Common Lisp STANDARD-CHAR, so there seems to be no
1388 ;; nice portable way to deal with them within Lisp, alas.
1389 ;; Fortunately, it's easy to use UNIX command line tools like
1390 ;; sed to remove the problem, so it's not too painful for us
1391 ;; to push responsibility for converting tabs to spaces out to
1394 ;; Other non-STANDARD-CHARs are problematic for the same reason.
1395 ;; Make sure that there aren't any..
1396 (let ((ch (find-if (lambda (char)
1397 (not (typep char 'standard-char)))
1400 (error "non-STANDARD-CHAR ~S found in foreign symbol table:~%~S"
1403 (setf line (string-trim '(#\space) line))
1404 (let ((p1 (position #\space line :from-end nil))
1405 (p2 (position #\space line :from-end t)))
1406 (if (not (and p1 p2 (< p1 p2)))
1407 ;; KLUDGE: It's too messy to try to understand all
1408 ;; possible output from nm, so we just punt the lines we
1409 ;; don't recognize. We realize that there's some chance
1410 ;; that might get us in trouble someday, so we warn
1412 (warn "ignoring unrecognized line ~S in ~A" line filename)
1413 (multiple-value-bind (value name)
1414 (if (string= "0x" line :end2 2)
1415 (values (parse-integer line :start 2 :end p1 :radix 16)
1416 (subseq line (1+ p2)))
1417 (values (parse-integer line :end p1 :radix 16)
1418 (subseq line (1+ p2))))
1419 (multiple-value-bind (old-value found)
1420 (gethash name *cold-foreign-symbol-table*)
1422 (not (= old-value value)))
1423 (warn "redefining ~S from #X~X to #X~X"
1424 name old-value value)))
1425 (setf (gethash name *cold-foreign-symbol-table*) value))))))
1428 (defun lookup-foreign-symbol (name)
1431 #!+linux #(;; FIXME: How many of these are actually
1432 ;; needed? The first four are taken from rather
1433 ;; disorganized CMU CL code, which could easily
1434 ;; have had redundant values in it..
1439 ;; ..and the fifth seems to match most
1440 ;; actual symbols, at least in RedHat 6.2.
1442 #!+freebsd #("" "ldso_stub__")
1444 (or (some (lambda (prefix)
1445 (gethash (concatenate 'string prefix name)
1446 *cold-foreign-symbol-table*
1449 *foreign-symbol-placeholder-value*
1451 (format *error-output* "~&The foreign symbol table is:~%")
1452 (maphash (lambda (k v)
1453 (format *error-output* "~&~S = #X~8X~%" k v))
1454 *cold-foreign-symbol-table*)
1455 (format *error-output* "~&The prefix table is: ~S~%" prefixes)
1456 (error "The foreign symbol ~S is undefined." name))))
1457 #!-x86 (error "non-x86 unsupported in SBCL (but see old CMU CL code)"))
1459 (defvar *cold-assembler-routines*)
1461 (defvar *cold-assembler-fixups*)
1463 (defun record-cold-assembler-routine (name address)
1464 (/xhow "in RECORD-COLD-ASSEMBLER-ROUTINE" name address)
1465 (push (cons name address)
1466 *cold-assembler-routines*))
1468 (defun record-cold-assembler-fixup (routine
1473 (push (list routine code-object offset kind)
1474 *cold-assembler-fixups*))
1476 (defun lookup-assembler-reference (symbol)
1477 (let ((value (cdr (assoc symbol *cold-assembler-routines*))))
1478 ;; FIXME: Should this be ERROR instead of WARN?
1480 (warn "Assembler routine ~S not defined." symbol))
1483 ;;; The x86 port needs to store code fixups along with code objects if
1484 ;;; they are to be moved, so fixups for code objects in the dynamic
1485 ;;; heap need to be noted.
1487 (defvar *load-time-code-fixups*)
1490 (defun note-load-time-code-fixup (code-object offset value kind)
1491 ;; If CODE-OBJECT might be moved
1492 (when (= (gspace-identifier (descriptor-intuit-gspace code-object))
1494 ;; FIXME: pushed thing should be a structure, not just a list
1495 (push (list code-object offset value kind) *load-time-code-fixups*))
1499 (defun output-load-time-code-fixups ()
1500 (dolist (fixups *load-time-code-fixups*)
1501 (let ((code-object (first fixups))
1502 (offset (second fixups))
1503 (value (third fixups))
1504 (kind (fourth fixups)))
1505 (cold-push (cold-cons
1506 (cold-intern :load-time-code-fixup)
1510 (number-to-core offset)
1512 (number-to-core value)
1515 *nil-descriptor*)))))
1516 *current-reversed-cold-toplevels*))))
1518 ;;; Given a pointer to a code object and an offset relative to the
1519 ;;; tail of the code object's header, return an offset relative to the
1520 ;;; (beginning of the) code object.
1522 ;;; FIXME: It might be clearer to reexpress
1523 ;;; (LET ((X (CALC-OFFSET CODE-OBJECT OFFSET0))) ..)
1525 ;;; (LET ((X (+ OFFSET0 (CODE-OBJECT-HEADER-N-BYTES CODE-OBJECT)))) ..).
1526 (declaim (ftype (function (descriptor sb!vm:word)) calc-offset))
1527 (defun calc-offset (code-object offset-from-tail-of-header)
1528 (let* ((header (read-memory code-object))
1529 (header-n-words (ash (descriptor-bits header) (- sb!vm:type-bits)))
1530 (header-n-bytes (ash header-n-words sb!vm:word-shift))
1531 (result (+ offset-from-tail-of-header header-n-bytes)))
1534 (declaim (ftype (function (descriptor sb!vm:word sb!vm:word keyword))
1536 (defun do-cold-fixup (code-object after-header value kind)
1537 (let* ((offset-within-code-object (calc-offset code-object after-header))
1538 (gspace-bytes (descriptor-bytes code-object))
1539 (gspace-byte-offset (+ (descriptor-byte-offset code-object)
1540 offset-within-code-object))
1541 (gspace-byte-address (gspace-byte-address
1542 (descriptor-gspace code-object))))
1543 (ecase sb!c:*backend-fasl-file-implementation*
1544 ;; Classic CMU CL supported these, and I haven't gone out of my way
1545 ;; to break them, but I have no way of testing them.. -- WHN 19990817
1547 (#.sb!c:pmax-fasl-file-implementation
1550 (assert (zerop (ash value -28)))
1551 (setf (ldb (byte 26 0) (sap-ref-32 sap 0))
1554 (setf (sap-ref-16 sap 0)
1556 (if (logbitp 15 value) 1 0))))
1558 (setf (sap-ref-16 sap 0)
1559 (ldb (byte 16 0) value)))))
1560 (#.sb!c:sparc-fasl-file-implementation
1561 (let ((inst (maybe-byte-swap (sap-ref-32 sap 0))))
1564 (error "Can't deal with call fixups yet."))
1567 (dpb (ldb (byte 22 10) value)
1572 (dpb (ldb (byte 10 0) value)
1575 (setf (sap-ref-32 sap 0)
1576 (maybe-byte-swap inst))))
1577 ((#.sb!c:rt-fasl-file-implementation
1578 #.sb!c:rt-afpa-fasl-file-implementation)
1581 (setf (sap-ref-16 sap 2)
1582 (maybe-byte-swap-short
1583 (ldb (byte 16 0) value))))
1585 (let ((high (ldb (byte 16 16) value)))
1586 (setf (sap-ref-16 sap 2)
1587 (maybe-byte-swap-short
1588 (if (logbitp 15 value) (1+ high) high)))))
1590 (unless (zerop (ash value -24))
1591 (warn "#X~8,'0X out of range for branch-absolute." value))
1592 (let ((inst (maybe-byte-swap-short (sap-ref-16 sap 0))))
1593 (setf (sap-ref-16 sap 0)
1594 (maybe-byte-swap-short
1595 (dpb (ldb (byte 8 16) value)
1598 (setf (sap-ref-16 sap 2)
1599 (maybe-byte-swap-short (ldb (byte 16 0) value))))))
1602 (let* ((un-fixed-up (byte-vector-ref-32 gspace-bytes
1603 gspace-byte-offset))
1604 (code-object-start-addr (logandc2 (descriptor-bits code-object)
1605 sb!vm:lowtag-mask)))
1606 (assert (= code-object-start-addr
1607 (+ gspace-byte-address
1608 (descriptor-byte-offset code-object))))
1611 (let ((fixed-up (+ value un-fixed-up)))
1612 (setf (byte-vector-ref-32 gspace-bytes gspace-byte-offset)
1614 ;; comment from CMU CL sources:
1616 ;; Note absolute fixups that point within the object.
1617 ;; KLUDGE: There seems to be an implicit assumption in
1618 ;; the old CMU CL code here, that if it doesn't point
1619 ;; before the object, it must point within the object
1620 ;; (not beyond it). It would be good to add an
1621 ;; explanation of why that's true, or an assertion that
1622 ;; it's really true, or both.
1623 (unless (< fixed-up code-object-start-addr)
1624 (note-load-time-code-fixup code-object
1628 (:relative ; (used for arguments to X86 relative CALL instruction)
1629 (let ((fixed-up (- (+ value un-fixed-up)
1632 sb!vm:word-bytes))) ; length of CALL argument
1633 (setf (byte-vector-ref-32 gspace-bytes gspace-byte-offset)
1635 ;; Note relative fixups that point outside the code
1636 ;; object, which is to say all relative fixups, since
1637 ;; relative addressing within a code object never needs
1639 (note-load-time-code-fixup code-object
1643 ;; CMU CL supported these, and I haven't gone out of my way to break
1644 ;; them, but I have no way of testing them.. -- WHN 19990817
1646 (#.sb!c:hppa-fasl-file-implementation
1647 (let ((inst (maybe-byte-swap (sap-ref-32 sap 0))))
1648 (setf (sap-ref-32 sap 0)
1652 (logior (ash (ldb (byte 11 0) value) 1)
1653 (logand inst #xffffc000)))
1655 (let ((low-bits (ldb (byte 11 0) value)))
1656 (assert (<= 0 low-bits (1- (ash 1 4))))
1657 (logior (ash low-bits 17)
1658 (logand inst #xffe0ffff))))
1660 (logior (ash (ldb (byte 5 13) value) 16)
1661 (ash (ldb (byte 2 18) value) 14)
1662 (ash (ldb (byte 2 11) value) 12)
1663 (ash (ldb (byte 11 20) value) 1)
1664 (ldb (byte 1 31) value)
1665 (logand inst #xffe00000)))
1667 (let ((bits (ldb (byte 9 2) value)))
1668 (assert (zerop (ldb (byte 2 0) value)))
1669 (logior (ash bits 3)
1670 (logand inst #xffe0e002)))))))))
1671 (#.sb!c:alpha-fasl-file-implementation
1674 (assert (zerop (ldb (byte 2 0) value)))
1676 (setf (sap-ref-16 sap 0)
1677 (logior (sap-ref-16 sap 0) (ldb (byte 14 0) (ash value -2)))))
1679 (let* ((value (if (logbitp 15 value) (+ value (ash 1 16)) value))
1680 (value (if (logbitp 31 value) (+ value (ash 1 32)) value))
1681 (value (if (logbitp 47 value) (+ value (ash 1 48)) value)))
1682 (setf (sap-ref-8 sap 0) (ldb (byte 8 48) value))
1683 (setf (sap-ref-8 sap 1) (ldb (byte 8 56) value))))
1685 (let* ((value (if (logbitp 15 value) (+ value (ash 1 16)) value))
1686 (value (if (logbitp 31 value) (+ value (ash 1 32)) value)))
1687 (setf (sap-ref-8 sap 0) (ldb (byte 8 32) value))
1688 (setf (sap-ref-8 sap 1) (ldb (byte 8 40) value))))
1690 (let ((value (if (logbitp 15 value) (+ value (ash 1 16)) value)))
1691 (setf (sap-ref-8 sap 0) (ldb (byte 8 16) value))
1692 (setf (sap-ref-8 sap 1) (ldb (byte 8 24) value))))
1694 (setf (sap-ref-8 sap 0) (ldb (byte 8 0) value))
1695 (setf (sap-ref-8 sap 1) (ldb (byte 8 8) value)))))
1696 (#.sb!c:sgi-fasl-file-implementation
1699 (assert (zerop (ash value -28)))
1700 (setf (ldb (byte 26 0) (sap-ref-32 sap 0))
1703 (setf (sap-ref-16 sap 2)
1705 (if (logbitp 15 value) 1 0))))
1707 (setf (sap-ref-16 sap 2)
1708 (ldb (byte 16 0) value)))))
1713 (defun resolve-assembler-fixups ()
1714 (dolist (fixup *cold-assembler-fixups*)
1715 (let* ((routine (car fixup))
1716 (value (lookup-assembler-reference routine)))
1718 (do-cold-fixup (second fixup) (third fixup) value (fourth fixup))))))
1720 (defun linkage-info-to-core ()
1721 (let ((result *nil-descriptor*))
1722 (maphash #'(lambda (symbol value)
1723 (cold-push (cold-cons (string-to-core symbol)
1724 (number-to-core value))
1726 *cold-foreign-symbol-table*)
1727 (cold-set (cold-intern '*!initial-foreign-symbols*) result))
1728 (let ((result *nil-descriptor*))
1729 (dolist (rtn *cold-assembler-routines*)
1730 (cold-push (cold-cons (cold-intern (car rtn))
1731 (number-to-core (cdr rtn)))
1733 (cold-set (cold-intern '*!initial-assembler-routines*) result)))
1735 ;;;; general machinery for cold-loading FASL files
1737 (defvar *cold-fop-functions* (replace (make-array 256) *fop-functions*)
1739 "FOP functions for cold loading")
1741 (defvar *normal-fop-functions*)
1743 ;;; This is like DEFINE-FOP which defines fops for warm load, but unlike
1744 ;;; DEFINE-FOP, this version
1745 ;;; (1) looks up the code for this name (created by a previous DEFINE-FOP)
1746 ;;; instead of creating a code, and
1747 ;;; (2) stores its definition in the *COLD-FOP-FUNCTIONS* vector, instead
1748 ;;; of storing in the *FOP-FUNCTIONS* vector.
1749 (defmacro define-cold-fop ((name &optional (pushp t)) &rest forms)
1750 (check-type pushp (member nil t :nope))
1751 (let ((code (get name 'fop-code))
1752 (fname (concat-pnames 'cold- name)))
1754 (error "~S is not a defined FOP." name))
1757 ,@(if (eq pushp :nope)
1759 `((with-fop-stack ,pushp ,@forms))))
1760 (setf (svref *cold-fop-functions* ,code) #',fname))))
1762 (defmacro clone-cold-fop ((name &optional (pushp t)) (small-name) &rest forms)
1763 (check-type pushp (member nil t :nope))
1765 (macrolet ((clone-arg () '(read-arg 4)))
1766 (define-cold-fop (,name ,pushp) ,@forms))
1767 (macrolet ((clone-arg () '(read-arg 1)))
1768 (define-cold-fop (,small-name ,pushp) ,@forms))))
1770 ;;; Cause a fop to be undefined in cold load.
1771 (defmacro not-cold-fop (name)
1772 `(define-cold-fop (,name)
1773 (error "The fop ~S is not supported in cold load." ',name)))
1775 ;;; COLD-LOAD loads stuff into the core image being built by calling FASLOAD
1776 ;;; with the fop function table rebound to a table of cold loading functions.
1777 (defun cold-load (filename)
1779 "Load the file named by FILENAME into the cold load image being built."
1780 (let* ((*normal-fop-functions* *fop-functions*)
1781 (*fop-functions* *cold-fop-functions*)
1782 (*cold-load-filename* (etypecase filename
1784 (pathname (namestring filename)))))
1785 (with-open-file (s filename :element-type '(unsigned-byte 8))
1786 (fasload s nil nil))))
1788 ;;;; miscellaneous cold fops
1790 (define-cold-fop (fop-misc-trap) *unbound-marker*)
1792 (define-cold-fop (fop-character)
1793 (make-character-descriptor (read-arg 3)))
1794 (define-cold-fop (fop-short-character)
1795 (make-character-descriptor (read-arg 1)))
1797 (define-cold-fop (fop-empty-list) *nil-descriptor*)
1798 (define-cold-fop (fop-truth) (cold-intern t))
1800 (define-cold-fop (fop-normal-load :nope)
1801 (setq *fop-functions* *normal-fop-functions*))
1803 (define-fop (fop-maybe-cold-load 82 :nope)
1804 (when *cold-load-filename*
1805 (setq *fop-functions* *cold-fop-functions*)))
1807 (define-cold-fop (fop-maybe-cold-load :nope))
1809 (clone-cold-fop (fop-struct)
1811 (let* ((size (clone-arg))
1812 (result (allocate-boxed-object *dynamic*
1814 sb!vm:instance-pointer-type)))
1815 (write-memory result (make-other-immediate-descriptor
1817 sb!vm:instance-header-type))
1818 (do ((index (1- size) (1- index)))
1820 (declare (fixnum index))
1821 (write-wordindexed result
1822 (+ index sb!vm:instance-slots-offset)
1826 (define-cold-fop (fop-layout)
1827 (let* ((length-des (pop-stack))
1828 (depthoid-des (pop-stack))
1829 (cold-inherits (pop-stack))
1831 (old (gethash name *cold-layouts*)))
1832 (declare (type descriptor length-des depthoid-des cold-inherits))
1833 (declare (type symbol name))
1834 ;; If a layout of this name has been defined already
1836 ;; Enforce consistency between the previous definition and the
1837 ;; current definition, then return the previous definition.
1839 ;; FIXME: This would be more maintainable if we used
1840 ;; DEFSTRUCT (:TYPE LIST) to define COLD-LAYOUT. -- WHN 19990825
1841 (old-layout-descriptor
1847 (declare (type descriptor old-layout-descriptor))
1848 (declare (type index old-length))
1849 (declare (type fixnum old-depthoid))
1850 (declare (type list old-inherits-list))
1851 (assert (eq name old-name))
1852 (let ((length (descriptor-fixnum length-des))
1853 (inherits-list (listify-cold-inherits cold-inherits))
1854 (depthoid (descriptor-fixnum depthoid-des)))
1855 (unless (= length old-length)
1856 (error "cold loading a reference to class ~S when the compile~%~
1857 time length was ~S and current length is ~S"
1861 (unless (equal inherits-list old-inherits-list)
1862 (error "cold loading a reference to class ~S when the compile~%~
1863 time inherits were ~S~%~
1864 and current inherits are ~S"
1868 (unless (= depthoid old-depthoid)
1869 (error "cold loading a reference to class ~S when the compile~%~
1870 time inheritance depthoid was ~S and current inheritance~%~
1875 old-layout-descriptor)
1876 ;; Make a new definition from scratch.
1877 (make-cold-layout name length-des cold-inherits depthoid-des))))
1879 ;;;; cold fops for loading symbols
1881 ;;; Load a symbol SIZE characters long from *FASL-FILE* and intern
1882 ;;; that symbol in PACKAGE.
1883 (defun cold-load-symbol (size package)
1884 (let ((string (make-string size)))
1885 (read-string-as-bytes *fasl-file* string)
1886 (cold-intern (intern string package) package)))
1888 (macrolet ((frob (name pname-len package-len)
1889 `(define-cold-fop (,name)
1890 (let ((index (read-arg ,package-len)))
1892 (cold-load-symbol (read-arg ,pname-len)
1893 (svref *current-fop-table* index)))))))
1894 (frob fop-symbol-in-package-save 4 4)
1895 (frob fop-small-symbol-in-package-save 1 4)
1896 (frob fop-symbol-in-byte-package-save 4 1)
1897 (frob fop-small-symbol-in-byte-package-save 1 1))
1899 (clone-cold-fop (fop-lisp-symbol-save)
1900 (fop-lisp-small-symbol-save)
1901 (push-fop-table (cold-load-symbol (clone-arg) *cl-package*)))
1903 (clone-cold-fop (fop-keyword-symbol-save)
1904 (fop-keyword-small-symbol-save)
1905 (push-fop-table (cold-load-symbol (clone-arg) *keyword-package*)))
1907 (clone-cold-fop (fop-uninterned-symbol-save)
1908 (fop-uninterned-small-symbol-save)
1909 (let* ((size (clone-arg))
1910 (name (make-string size)))
1911 (read-string-as-bytes *fasl-file* name)
1912 (let ((symbol (allocate-symbol name)))
1913 (push-fop-table symbol))))
1915 ;;;; cold fops for loading lists
1917 ;;; Make a list of the top LENGTH things on the fop stack. The last
1918 ;;; cdr of the list is set to LAST.
1919 (defmacro cold-stack-list (length last)
1920 `(do* ((index ,length (1- index))
1921 (result ,last (cold-cons (pop-stack) result)))
1922 ((= index 0) result)
1923 (declare (fixnum index))))
1925 (define-cold-fop (fop-list)
1926 (cold-stack-list (read-arg 1) *nil-descriptor*))
1927 (define-cold-fop (fop-list*)
1928 (cold-stack-list (read-arg 1) (pop-stack)))
1929 (define-cold-fop (fop-list-1)
1930 (cold-stack-list 1 *nil-descriptor*))
1931 (define-cold-fop (fop-list-2)
1932 (cold-stack-list 2 *nil-descriptor*))
1933 (define-cold-fop (fop-list-3)
1934 (cold-stack-list 3 *nil-descriptor*))
1935 (define-cold-fop (fop-list-4)
1936 (cold-stack-list 4 *nil-descriptor*))
1937 (define-cold-fop (fop-list-5)
1938 (cold-stack-list 5 *nil-descriptor*))
1939 (define-cold-fop (fop-list-6)
1940 (cold-stack-list 6 *nil-descriptor*))
1941 (define-cold-fop (fop-list-7)
1942 (cold-stack-list 7 *nil-descriptor*))
1943 (define-cold-fop (fop-list-8)
1944 (cold-stack-list 8 *nil-descriptor*))
1945 (define-cold-fop (fop-list*-1)
1946 (cold-stack-list 1 (pop-stack)))
1947 (define-cold-fop (fop-list*-2)
1948 (cold-stack-list 2 (pop-stack)))
1949 (define-cold-fop (fop-list*-3)
1950 (cold-stack-list 3 (pop-stack)))
1951 (define-cold-fop (fop-list*-4)
1952 (cold-stack-list 4 (pop-stack)))
1953 (define-cold-fop (fop-list*-5)
1954 (cold-stack-list 5 (pop-stack)))
1955 (define-cold-fop (fop-list*-6)
1956 (cold-stack-list 6 (pop-stack)))
1957 (define-cold-fop (fop-list*-7)
1958 (cold-stack-list 7 (pop-stack)))
1959 (define-cold-fop (fop-list*-8)
1960 (cold-stack-list 8 (pop-stack)))
1962 ;;;; cold fops for loading vectors
1964 (clone-cold-fop (fop-string)
1966 (let* ((len (clone-arg))
1967 (string (make-string len)))
1968 (read-string-as-bytes *fasl-file* string)
1969 (string-to-core string)))
1971 (clone-cold-fop (fop-vector)
1973 (let* ((size (clone-arg))
1974 (result (allocate-vector-object *dynamic*
1977 sb!vm:simple-vector-type)))
1978 (do ((index (1- size) (1- index)))
1980 (declare (fixnum index))
1981 (write-wordindexed result
1982 (+ index sb!vm:vector-data-offset)
1986 (define-cold-fop (fop-int-vector)
1987 (let* ((len (read-arg 4))
1988 (sizebits (read-arg 1))
1989 (type (case sizebits
1990 (1 sb!vm:simple-bit-vector-type)
1991 (2 sb!vm:simple-array-unsigned-byte-2-type)
1992 (4 sb!vm:simple-array-unsigned-byte-4-type)
1993 (8 sb!vm:simple-array-unsigned-byte-8-type)
1994 (16 sb!vm:simple-array-unsigned-byte-16-type)
1995 (32 sb!vm:simple-array-unsigned-byte-32-type)
1996 (t (error "losing element size: ~D" sizebits))))
1997 (result (allocate-vector-object *dynamic* sizebits len type))
1998 (start (+ (descriptor-byte-offset result)
1999 (ash sb!vm:vector-data-offset sb!vm:word-shift)))
2001 (ceiling (* len sizebits)
2003 (read-sequence-or-die (descriptor-bytes result)
2009 (define-cold-fop (fop-single-float-vector)
2010 (let* ((len (read-arg 4))
2011 (result (allocate-vector-object *dynamic*
2014 sb!vm:simple-array-single-float-type))
2015 (start (+ (descriptor-byte-offset result)
2016 (ash sb!vm:vector-data-offset sb!vm:word-shift)))
2017 (end (+ start (* len sb!vm:word-bytes))))
2018 (read-sequence-or-die (descriptor-bytes result)
2024 (not-cold-fop fop-double-float-vector)
2025 #!+long-float (not-cold-fop fop-long-float-vector)
2026 (not-cold-fop fop-complex-single-float-vector)
2027 (not-cold-fop fop-complex-double-float-vector)
2028 #!+long-float (not-cold-fop fop-complex-long-float-vector)
2030 (define-cold-fop (fop-array)
2031 (let* ((rank (read-arg 4))
2032 (data-vector (pop-stack))
2033 (result (allocate-boxed-object *dynamic*
2034 (+ sb!vm:array-dimensions-offset rank)
2035 sb!vm:other-pointer-type)))
2036 (write-memory result
2037 (make-other-immediate-descriptor rank
2038 sb!vm:simple-array-type))
2039 (write-wordindexed result sb!vm:array-fill-pointer-slot *nil-descriptor*)
2040 (write-wordindexed result sb!vm:array-data-slot data-vector)
2041 (write-wordindexed result sb!vm:array-displacement-slot *nil-descriptor*)
2042 (write-wordindexed result sb!vm:array-displaced-p-slot *nil-descriptor*)
2043 (let ((total-elements 1))
2044 (dotimes (axis rank)
2045 (let ((dim (pop-stack)))
2046 (unless (or (= (descriptor-lowtag dim) sb!vm:even-fixnum-type)
2047 (= (descriptor-lowtag dim) sb!vm:odd-fixnum-type))
2048 (error "non-fixnum dimension? (~S)" dim))
2049 (setf total-elements
2051 (logior (ash (descriptor-high dim)
2052 (- descriptor-low-bits (1- sb!vm:lowtag-bits)))
2053 (ash (descriptor-low dim)
2054 (- 1 sb!vm:lowtag-bits)))))
2055 (write-wordindexed result
2056 (+ sb!vm:array-dimensions-offset axis)
2058 (write-wordindexed result
2059 sb!vm:array-elements-slot
2060 (make-fixnum-descriptor total-elements)))
2063 ;;;; cold fops for loading numbers
2065 (defmacro define-cold-number-fop (fop)
2066 `(define-cold-fop (,fop :nope)
2067 ;; Invoke the ordinary warm version of this fop to push the
2070 ;; Replace the warm fop result with the cold image of the warm
2073 (let ((number (pop-stack)))
2074 (number-to-core number)))))
2076 (define-cold-number-fop fop-single-float)
2077 (define-cold-number-fop fop-double-float)
2078 (define-cold-number-fop fop-integer)
2079 (define-cold-number-fop fop-small-integer)
2080 (define-cold-number-fop fop-word-integer)
2081 (define-cold-number-fop fop-byte-integer)
2082 (define-cold-number-fop fop-complex-single-float)
2083 (define-cold-number-fop fop-complex-double-float)
2086 (define-cold-fop (fop-long-float)
2087 (ecase sb!c:*backend-fasl-file-implementation*
2088 (:x86 ; 80 bit long-float format
2089 (prepare-for-fast-read-byte *fasl-file*
2090 (let* ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits
2091 (1- sb!vm:long-float-size)
2092 sb!vm:long-float-type))
2093 (low-bits (make-random-descriptor (fast-read-u-integer 4)))
2094 (high-bits (make-random-descriptor (fast-read-u-integer 4)))
2095 (exp-bits (make-random-descriptor (fast-read-s-integer 2))))
2096 (done-with-fast-read-byte)
2097 (write-wordindexed des sb!vm:long-float-value-slot low-bits)
2098 (write-wordindexed des (1+ sb!vm:long-float-value-slot) high-bits)
2099 (write-wordindexed des (+ 2 sb!vm:long-float-value-slot) exp-bits)
2101 ;; This was supported in CMU CL, but isn't currently supported in
2104 (#.sb!c:sparc-fasl-file-implementation ; 128 bit long-float format
2105 (prepare-for-fast-read-byte *fasl-file*
2106 (let* ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits
2107 (1- sb!vm:long-float-size)
2108 sb!vm:long-float-type))
2109 (low-bits (make-random-descriptor (fast-read-u-integer 4)))
2110 (mid-bits (make-random-descriptor (fast-read-u-integer 4)))
2111 (high-bits (make-random-descriptor (fast-read-u-integer 4)))
2112 (exp-bits (make-random-descriptor (fast-read-s-integer 4))))
2113 (done-with-fast-read-byte)
2114 (write-wordindexed des sb!vm:long-float-value-slot exp-bits)
2115 (write-wordindexed des (1+ sb!vm:long-float-value-slot) high-bits)
2116 (write-wordindexed des (+ 2 sb!vm:long-float-value-slot) mid-bits)
2117 (write-wordindexed des (+ 3 sb!vm:long-float-value-slot) low-bits)
2121 (define-cold-fop (fop-complex-long-float)
2122 (ecase sb!c:*backend-fasl-file-implementation*
2123 (:x86 ; 80 bit long-float format
2124 (prepare-for-fast-read-byte *fasl-file*
2125 (let* ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits
2126 (1- sb!vm:complex-long-float-size)
2127 sb!vm:complex-long-float-type))
2128 (real-low-bits (make-random-descriptor (fast-read-u-integer 4)))
2129 (real-high-bits (make-random-descriptor (fast-read-u-integer 4)))
2130 (real-exp-bits (make-random-descriptor (fast-read-s-integer 2)))
2131 (imag-low-bits (make-random-descriptor (fast-read-u-integer 4)))
2132 (imag-high-bits (make-random-descriptor (fast-read-u-integer 4)))
2133 (imag-exp-bits (make-random-descriptor (fast-read-s-integer 2))))
2134 (done-with-fast-read-byte)
2135 (write-wordindexed des
2136 sb!vm:complex-long-float-real-slot
2138 (write-wordindexed des
2139 (1+ sb!vm:complex-long-float-real-slot)
2141 (write-wordindexed des
2142 (+ 2 sb!vm:complex-long-float-real-slot)
2144 (write-wordindexed des
2145 sb!vm:complex-long-float-imag-slot
2147 (write-wordindexed des
2148 (1+ sb!vm:complex-long-float-imag-slot)
2150 (write-wordindexed des
2151 (+ 2 sb!vm:complex-long-float-imag-slot)
2154 ;; This was supported in CMU CL, but isn't currently supported in SBCL.
2156 (#.sb!c:sparc-fasl-file-implementation ; 128 bit long-float format
2157 (prepare-for-fast-read-byte *fasl-file*
2158 (let* ((des (allocate-unboxed-object *dynamic* sb!vm:word-bits
2159 (1- sb!vm:complex-long-float-size)
2160 sb!vm:complex-long-float-type))
2161 (real-low-bits (make-random-descriptor (fast-read-u-integer 4)))
2162 (real-mid-bits (make-random-descriptor (fast-read-u-integer 4)))
2163 (real-high-bits (make-random-descriptor (fast-read-u-integer 4)))
2164 (real-exp-bits (make-random-descriptor (fast-read-s-integer 4)))
2165 (imag-low-bits (make-random-descriptor (fast-read-u-integer 4)))
2166 (imag-mid-bits (make-random-descriptor (fast-read-u-integer 4)))
2167 (imag-high-bits (make-random-descriptor (fast-read-u-integer 4)))
2168 (imag-exp-bits (make-random-descriptor (fast-read-s-integer 4))))
2169 (done-with-fast-read-byte)
2170 (write-wordindexed des
2171 sb!vm:complex-long-float-real-slot
2173 (write-wordindexed des
2174 (1+ sb!vm:complex-long-float-real-slot)
2176 (write-wordindexed des
2177 (+ 2 sb!vm:complex-long-float-real-slot)
2179 (write-wordindexed des
2180 (+ 3 sb!vm:complex-long-float-real-slot)
2182 (write-wordindexed des
2183 sb!vm:complex-long-float-real-slot
2185 (write-wordindexed des
2186 (1+ sb!vm:complex-long-float-real-slot)
2188 (write-wordindexed des
2189 (+ 2 sb!vm:complex-long-float-real-slot)
2191 (write-wordindexed des
2192 (+ 3 sb!vm:complex-long-float-real-slot)
2196 (define-cold-fop (fop-ratio)
2197 (let ((den (pop-stack)))
2198 (number-pair-to-core (pop-stack) den sb!vm:ratio-type)))
2200 (define-cold-fop (fop-complex)
2201 (let ((im (pop-stack)))
2202 (number-pair-to-core (pop-stack) im sb!vm:complex-type)))
2204 ;;;; cold fops for calling (or not calling)
2206 (not-cold-fop fop-eval)
2207 (not-cold-fop fop-eval-for-effect)
2209 (defvar *load-time-value-counter*)
2211 (define-cold-fop (fop-funcall)
2212 (unless (= (read-arg 1) 0)
2213 (error "You can't FOP-FUNCALL arbitrary stuff in cold load."))
2214 (let ((counter *load-time-value-counter*))
2215 (cold-push (cold-cons
2216 (cold-intern :load-time-value)
2220 (number-to-core counter)
2222 *current-reversed-cold-toplevels*)
2223 (setf *load-time-value-counter* (1+ counter))
2224 (make-descriptor 0 0 nil counter)))
2226 (defun finalize-load-time-value-noise ()
2227 (cold-set (cold-intern 'sb!impl::*!load-time-values*)
2228 (allocate-vector-object *dynamic*
2230 *load-time-value-counter*
2231 sb!vm:simple-vector-type)))
2233 (define-cold-fop (fop-funcall-for-effect nil)
2234 (if (= (read-arg 1) 0)
2235 (cold-push (pop-stack)
2236 *current-reversed-cold-toplevels*)
2237 (error "You can't FOP-FUNCALL arbitrary stuff in cold load.")))
2239 ;;;; cold fops for fixing up circularities
2241 (define-cold-fop (fop-rplaca nil)
2242 (let ((obj (svref *current-fop-table* (read-arg 4)))
2244 (write-memory (cold-nthcdr idx obj) (pop-stack))))
2246 (define-cold-fop (fop-rplacd nil)
2247 (let ((obj (svref *current-fop-table* (read-arg 4)))
2249 (write-wordindexed (cold-nthcdr idx obj) 1 (pop-stack))))
2251 (define-cold-fop (fop-svset nil)
2252 (let ((obj (svref *current-fop-table* (read-arg 4)))
2254 (write-wordindexed obj
2256 (ecase (descriptor-lowtag obj)
2257 (#.sb!vm:instance-pointer-type 1)
2258 (#.sb!vm:other-pointer-type 2)))
2261 (define-cold-fop (fop-structset nil)
2262 (let ((obj (svref *current-fop-table* (read-arg 4)))
2264 (write-wordindexed obj (1+ idx) (pop-stack))))
2266 (define-cold-fop (fop-nthcdr t)
2267 (cold-nthcdr (read-arg 4) (pop-stack)))
2269 (defun cold-nthcdr (index obj)
2271 (setq obj (read-wordindexed obj 1)))
2274 ;;;; cold fops for loading code objects and functions
2276 (define-cold-fop (fop-fset nil)
2277 (let ((fn (pop-stack))
2279 (cold-fset name fn)))
2281 (define-cold-fop (fop-fdefinition)
2282 (cold-fdefinition-object (pop-stack)))
2284 (define-cold-fop (fop-sanctify-for-execution)
2287 (not-cold-fop fop-make-byte-compiled-function)
2289 ;;; Setting this variable shows what code looks like before any
2290 ;;; fixups (or function headers) are applied.
2291 #!+sb-show (defvar *show-pre-fixup-code-p* nil)
2293 ;;; FIXME: The logic here should be converted into a function
2294 ;;; COLD-CODE-FOP-GUTS (NCONST CODE-SIZE) called by DEFINE-COLD-FOP
2295 ;;; FOP-CODE and DEFINE-COLD-FOP FOP-SMALL-CODE, so that
2296 ;;; variable-capture nastiness like (LET ((NCONST ,NCONST) ..) ..)
2297 ;;; doesn't keep me awake at night.
2298 (defmacro define-cold-code-fop (name nconst code-size)
2299 `(define-cold-fop (,name)
2300 (let* ((nconst ,nconst)
2301 (code-size ,code-size)
2302 (raw-header-n-words (+ sb!vm:code-trace-table-offset-slot nconst))
2304 ;; Note: we round the number of constants up to ensure
2305 ;; that the code vector will be properly aligned.
2306 (round-up raw-header-n-words 2))
2307 (des (allocate-descriptor
2308 ;; In the X86 with CGC, code can't be relocated, so
2309 ;; we have to put it into static space. In all other
2310 ;; configurations, code can go into dynamic space.
2311 #!+(and x86 cgc) *static* ; KLUDGE: Why? -- WHN 19990907
2312 #!-(and x86 cgc) *dynamic*
2313 (+ (ash header-n-words sb!vm:word-shift) code-size)
2314 sb!vm:other-pointer-type)))
2316 (make-other-immediate-descriptor header-n-words
2317 sb!vm:code-header-type))
2318 (write-wordindexed des
2319 sb!vm:code-code-size-slot
2320 (make-fixnum-descriptor
2321 (ash (+ code-size (1- (ash 1 sb!vm:word-shift)))
2322 (- sb!vm:word-shift))))
2323 (write-wordindexed des sb!vm:code-entry-points-slot *nil-descriptor*)
2324 (write-wordindexed des sb!vm:code-debug-info-slot (pop-stack))
2325 (when (oddp raw-header-n-words)
2326 (write-wordindexed des
2328 (make-random-descriptor 0)))
2329 (do ((index (1- raw-header-n-words) (1- index)))
2330 ((< index sb!vm:code-trace-table-offset-slot))
2331 (write-wordindexed des index (pop-stack)))
2332 (let* ((start (+ (descriptor-byte-offset des)
2333 (ash header-n-words sb!vm:word-shift)))
2334 (end (+ start code-size)))
2335 (read-sequence-or-die (descriptor-bytes des)
2340 (when *show-pre-fixup-code-p*
2341 (format *trace-output*
2342 "~&/raw code from code-fop ~D ~D:~%"
2345 (do ((i start (+ i sb!vm:word-bytes)))
2347 (format *trace-output*
2348 "/#X~8,'0x: #X~8,'0x~%"
2349 (+ i (gspace-byte-address (descriptor-gspace des)))
2350 (byte-vector-ref-32 (descriptor-bytes des) i)))))
2353 (define-cold-code-fop fop-code (read-arg 4) (read-arg 4))
2355 (define-cold-code-fop fop-small-code (read-arg 1) (read-arg 2))
2357 (clone-cold-fop (fop-alter-code nil)
2358 (fop-byte-alter-code)
2359 (let ((slot (clone-arg))
2362 (write-wordindexed code slot value)))
2364 (define-cold-fop (fop-function-entry)
2365 (let* ((type (pop-stack))
2366 (arglist (pop-stack))
2368 (code-object (pop-stack))
2369 (offset (calc-offset code-object (read-arg 4)))
2370 (fn (descriptor-beyond code-object
2372 sb!vm:function-pointer-type))
2373 (next (read-wordindexed code-object sb!vm:code-entry-points-slot)))
2374 (unless (zerop (logand offset sb!vm:lowtag-mask))
2375 ;; FIXME: This should probably become a fatal error.
2376 (warn "unaligned function entry: ~S at #X~X" name offset))
2377 (write-wordindexed code-object sb!vm:code-entry-points-slot fn)
2379 (make-other-immediate-descriptor (ash offset
2380 (- sb!vm:word-shift))
2381 sb!vm:function-header-type))
2382 (write-wordindexed fn
2383 sb!vm:function-self-slot
2384 ;; KLUDGE: Wiring decisions like this in at
2385 ;; this level ("if it's an x86") instead of a
2386 ;; higher level of abstraction ("if it has such
2387 ;; and such relocation peculiarities (which
2388 ;; happen to be confined to the x86)") is bad.
2389 ;; It would be nice if the code were instead
2390 ;; conditional on some more descriptive
2391 ;; feature, :STICKY-CODE or
2392 ;; :LOAD-GC-INTERACTION or something.
2394 ;; FIXME: The X86 definition of the function
2395 ;; self slot breaks everything object.tex says
2396 ;; about it. (As far as I can tell, the X86
2397 ;; definition makes it a pointer to the actual
2398 ;; code instead of a pointer back to the object
2399 ;; itself.) Ask on the mailing list whether
2400 ;; this is documented somewhere, and if not,
2401 ;; try to reverse engineer some documentation
2404 ;; a pointer back to the function object, as
2405 ;; described in CMU CL
2406 ;; src/docs/internals/object.tex
2409 ;; KLUDGE: a pointer to the actual code of the
2410 ;; object, as described nowhere that I can find
2412 (make-random-descriptor
2413 (+ (descriptor-bits fn)
2414 (- (ash sb!vm:function-code-offset sb!vm:word-shift)
2415 ;; FIXME: We should mask out the type
2416 ;; bits, not assume we know what they
2417 ;; are and subtract them out this way.
2418 sb!vm:function-pointer-type))))
2419 (write-wordindexed fn sb!vm:function-next-slot next)
2420 (write-wordindexed fn sb!vm:function-name-slot name)
2421 (write-wordindexed fn sb!vm:function-arglist-slot arglist)
2422 (write-wordindexed fn sb!vm:function-type-slot type)
2425 (define-cold-fop (fop-foreign-fixup)
2426 (let* ((kind (pop-stack))
2427 (code-object (pop-stack))
2429 (sym (make-string len)))
2430 (read-string-as-bytes *fasl-file* sym)
2431 (let ((offset (read-arg 4))
2432 (value (lookup-foreign-symbol sym)))
2433 (do-cold-fixup code-object offset value kind))
2436 (define-cold-fop (fop-assembler-code)
2437 (let* ((length (read-arg 4))
2439 ;; Note: we round the number of constants up to ensure that
2440 ;; the code vector will be properly aligned.
2441 (round-up sb!vm:code-constants-offset 2))
2442 (des (allocate-descriptor *read-only*
2443 (+ (ash header-n-words sb!vm:word-shift)
2445 sb!vm:other-pointer-type)))
2447 (make-other-immediate-descriptor header-n-words
2448 sb!vm:code-header-type))
2449 (write-wordindexed des
2450 sb!vm:code-code-size-slot
2451 (make-fixnum-descriptor
2452 (ash (+ length (1- (ash 1 sb!vm:word-shift)))
2453 (- sb!vm:word-shift))))
2454 (write-wordindexed des sb!vm:code-entry-points-slot *nil-descriptor*)
2455 (write-wordindexed des sb!vm:code-debug-info-slot *nil-descriptor*)
2457 (let* ((start (+ (descriptor-byte-offset des)
2458 (ash header-n-words sb!vm:word-shift)))
2459 (end (+ start length)))
2460 (read-sequence-or-die (descriptor-bytes des)
2466 (define-cold-fop (fop-assembler-routine)
2467 (let* ((routine (pop-stack))
2469 (offset (calc-offset des (read-arg 4))))
2470 (record-cold-assembler-routine
2472 (+ (logandc2 (descriptor-bits des) sb!vm:lowtag-mask) offset))
2475 (define-cold-fop (fop-assembler-fixup)
2476 (let* ((routine (pop-stack))
2478 (code-object (pop-stack))
2479 (offset (read-arg 4)))
2480 (record-cold-assembler-fixup routine code-object offset kind)
2483 (define-cold-fop (fop-code-object-fixup)
2484 (let* ((kind (pop-stack))
2485 (code-object (pop-stack))
2486 (offset (read-arg 4))
2487 (value (descriptor-bits code-object)))
2488 (do-cold-fixup code-object offset value kind)
2491 ;;;; emitting C header file
2493 (defun tail-comp (string tail)
2494 (and (>= (length string) (length tail))
2495 (string= string tail :start1 (- (length string) (length tail)))))
2497 (defun head-comp (string head)
2498 (and (>= (length string) (length head))
2499 (string= string head :end1 (length head))))
2501 (defun write-c-header ()
2505 '("This is a machine-generated file. Do not edit it by hand."
2507 "This file contains low-level information about the"
2508 "internals of a particular version and configuration"
2509 "of SBCL. It is used by the C compiler to create a runtime"
2510 "support environment, an executable program in the host"
2511 "operating system's native format, which can then be used to"
2512 "load and run 'core' files, which are basically programs"
2513 "in SBCL's own format."))
2514 (format t " * ~A~%" line))
2518 (format t "#ifndef _SBCL_H_~%#define _SBCL_H_~%")
2521 (format t "#define SBCL_CORE_VERSION_INTEGER ~D~%" sbcl-core-version-integer)
2523 "#define SBCL_VERSION_STRING ~S~%"
2524 (sb!xc:lisp-implementation-version))
2525 (format t "#define CORE_MAGIC 0x~X~%" core-magic)
2528 ;; FIXME: Other things from core.h should be defined here too:
2529 ;; #define CORE_END 3840
2530 ;; #define CORE_NDIRECTORY 3861
2531 ;; #define CORE_VALIDATE 3845
2532 ;; #define CORE_VERSION 3860
2533 ;; #define CORE_MACHINE_STATE 3862
2534 ;; (Except that some of them are obsolete and should be deleted instead.)
2536 ;; #define DYNAMIC_SPACE_ID (1)
2537 ;; #define STATIC_SPACE_ID (2)
2538 ;; #define READ_ONLY_SPACE_ID (3)
2540 (let ((constants nil))
2541 (do-external-symbols (symbol (find-package "SB!VM"))
2542 (when (constantp symbol)
2543 (let ((name (symbol-name symbol)))
2545 ((record (prefix string priority)
2546 (push (list (concatenate
2549 (delete #\- (string-capitalize string)))
2551 (symbol-value symbol)
2552 (fdocumentation symbol 'variable))
2554 (test-tail (tail prefix priority)
2555 (when (tail-comp name tail)
2561 (test-head (head prefix priority)
2562 (when (head-comp name head)
2564 (subseq name (length head))
2566 (test-tail "-TYPE" "type_" 0)
2567 (test-tail "-FLAG" "flag_" 1)
2568 (test-tail "-TRAP" "trap_" 2)
2569 (test-tail "-SUBTYPE" "subtype_" 3)
2570 (test-head "TRACE-TABLE-" "tracetab_" 4)
2571 (test-tail "-SC-NUMBER" "sc_" 5)))))
2574 #'(lambda (const1 const2)
2575 (if (= (second const1) (second const2))
2576 (< (third const1) (third const2))
2577 (< (second const1) (second const2))))))
2578 (let ((prev-priority (second (car constants))))
2579 (dolist (const constants)
2580 (unless (= prev-priority (second const))
2582 (setf prev-priority (second const)))
2584 "#define ~A ~D /* 0x~X */~@[ /* ~A */~]~%"
2590 (format t "#define ERRORS { \\~%")
2591 ;; FIXME: Is this just DO-VECTOR?
2592 (let ((internal-errors sb!c:*backend-internal-errors*))
2593 (dotimes (i (length internal-errors))
2594 (format t " ~S, /*~D*/ \\~%" (cdr (aref internal-errors i)) i)))
2595 (format t " NULL \\~%}~%")
2597 (let ((structs (sort (copy-list sb!vm:*primitive-objects*) #'string<
2598 :key #'(lambda (obj)
2600 (sb!vm:primitive-object-name obj))))))
2601 (format t "#ifndef LANGUAGE_ASSEMBLY~2%")
2602 (format t "#define LISPOBJ(x) ((lispobj)x)~2%")
2603 (dolist (obj structs)
2606 (nsubstitute #\_ #\-
2607 (string-downcase (string (sb!vm:primitive-object-name obj)))))
2608 (when (sb!vm:primitive-object-header obj)
2609 (format t " lispobj header;~%"))
2610 (dolist (slot (sb!vm:primitive-object-slots obj))
2611 (format t " ~A ~A~@[[1]~];~%"
2612 (getf (sb!vm:slot-options slot) :c-type "lispobj")
2613 (nsubstitute #\_ #\-
2614 (string-downcase (string (sb!vm:slot-name slot))))
2615 (sb!vm:slot-rest-p slot)))
2617 (format t "#else /* LANGUAGE_ASSEMBLY */~2%")
2618 (format t "#define LISPOBJ(thing) thing~2%")
2619 (dolist (obj structs)
2620 (let ((name (sb!vm:primitive-object-name obj))
2621 (lowtag (eval (sb!vm:primitive-object-lowtag obj))))
2623 (dolist (slot (sb!vm:primitive-object-slots obj))
2624 (format t "#define ~A_~A_OFFSET ~D~%"
2625 (substitute #\_ #\- (string name))
2626 (substitute #\_ #\- (string (sb!vm:slot-name slot)))
2627 (- (* (sb!vm:slot-offset slot) sb!vm:word-bytes) lowtag)))
2629 (format t "#endif /* LANGUAGE_ASSEMBLY */~2%"))
2630 (dolist (symbol (cons nil sb!vm:*static-symbols*))
2631 ;; FIXME: It would be nice to use longer names NIL and (particularly) T
2632 ;; in #define statements.
2633 (format t "#define ~A LISPOBJ(0x~X)~%"
2634 (nsubstitute #\_ #\-
2635 (remove-if #'(lambda (char)
2636 (member char '(#\% #\* #\. #\!)))
2637 (symbol-name symbol)))
2638 (if *static* ; if we ran GENESIS
2639 ;; We actually ran GENESIS, use the real value.
2640 (descriptor-bits (cold-intern symbol))
2641 ;; We didn't run GENESIS, so guess at the address.
2642 (+ sb!vm:*static-space-start*
2644 sb!vm:other-pointer-type
2645 (if symbol (sb!vm:static-symbol-offset symbol) 0)))))
2646 (format t "~%#endif~%"))
2648 ;;;; writing map file
2650 ;;; Write a map file describing the cold load. Some of this
2651 ;;; information is subject to change due to relocating GC, but even so
2652 ;;; it can be very handy when attempting to troubleshoot the early
2653 ;;; stages of cold load.
2655 (let ((*print-pretty* nil)
2656 (*print-case* :upcase))
2657 (format t "assembler routines defined in core image:~2%")
2658 (dolist (routine (sort (copy-list *cold-assembler-routines*) #'<
2660 (format t "#X~8,'0X: ~S~%" (cdr routine) (car routine)))
2663 (maphash #'(lambda (name fdefn)
2664 (let ((fun (read-wordindexed fdefn
2665 sb!vm:fdefn-function-slot)))
2666 (if (= (descriptor-bits fun)
2667 (descriptor-bits *nil-descriptor*))
2669 (let ((addr (read-wordindexed fdefn
2670 sb!vm:fdefn-raw-addr-slot)))
2671 (push (cons name (descriptor-bits addr))
2673 *cold-fdefn-objects*)
2674 (format t "~%~|~%initially defined functions:~2%")
2675 (dolist (info (sort funs #'< :key #'cdr))
2676 (format t "0x~8,'0X: ~S #X~8,'0X~%" (cdr info) (car info)
2677 (- (cdr info) #x17)))
2680 (a note about initially undefined function references: These functions
2681 are referred to by code which is installed by GENESIS, but they are not
2682 installed by GENESIS. This is not necessarily a problem; functions can
2683 be defined later, by cold init toplevel forms, or in files compiled and
2684 loaded at warm init, or elsewhere. As long as they are defined before
2685 they are called, everything should be OK. Things are also OK if the
2686 cross-compiler knew their inline definition and used that everywhere
2687 that they were called before the out-of-line definition is installed,
2688 as is fairly common for structure accessors.)
2689 initially undefined function references:~2%")
2690 (labels ((key (name)
2692 (symbol (symbol-name name))
2693 ;; FIXME: should use standard SETF-function parsing logic
2694 (list (key (second name))))))
2695 (dolist (name (sort undefs #'string< :key #'key))
2696 (format t "~S" name)
2697 ;; FIXME: This ACCESSOR-FOR stuff should go away when the
2698 ;; code has stabilized. (It's only here to help me
2699 ;; categorize the flood of undefined functions caused by
2700 ;; completely rewriting the bootstrap process. Hopefully any
2701 ;; future maintainers will mostly have small numbers of
2702 ;; undefined functions..)
2703 (let ((accessor-for (info :function :accessor-for name)))
2705 (format t " (accessor for ~S)" accessor-for)))
2708 (format t "~%~|~%layout names:~2%")
2710 (maphash #'(lambda (name gorp)
2711 (declare (ignore name))
2712 (stuff (cons (descriptor-bits (car gorp))
2715 (dolist (x (sort (stuff) #'< :key #'car))
2716 (apply #'format t "~8,'0X: ~S[~D]~%~10T~S~%" x)))
2720 ;;;; writing core file
2722 (defvar *core-file*)
2723 (defvar *data-page*)
2725 ;;; KLUDGE: These numbers correspond to values in core.h. If they're
2726 ;;; documented anywhere, I haven't found it. (I haven't tried very
2727 ;;; hard yet.) -- WHN 19990826
2728 (defparameter version-entry-type-code 3860)
2729 (defparameter validate-entry-type-code 3845)
2730 (defparameter directory-entry-type-code 3841)
2731 (defparameter new-directory-entry-type-code 3861)
2732 (defparameter initial-function-entry-type-code 3863)
2733 (defparameter end-entry-type-code 3840)
2735 (declaim (ftype (function (sb!vm:word) sb!vm:word) write-long))
2736 (defun write-long (num) ; FIXME: WRITE-WORD would be a better name.
2737 (ecase sb!c:*backend-byte-order*
2740 (write-byte (ldb (byte 8 (* i 8)) num) *core-file*)))
2743 (write-byte (ldb (byte 8 (* (- 3 i) 8)) num) *core-file*))))
2746 (defun advance-to-page ()
2747 (force-output *core-file*)
2748 (file-position *core-file*
2749 (round-up (file-position *core-file*)
2750 sb!c:*backend-page-size*)))
2752 (defun output-gspace (gspace)
2753 (force-output *core-file*)
2754 (let* ((posn (file-position *core-file*))
2755 (bytes (* (gspace-free-word-index gspace) sb!vm:word-bytes))
2756 (pages (ceiling bytes sb!c:*backend-page-size*))
2757 (total-bytes (* pages sb!c:*backend-page-size*)))
2759 (file-position *core-file*
2760 (* sb!c:*backend-page-size* (1+ *data-page*)))
2762 "writing ~S byte~:P [~S page~:P] from ~S~%"
2768 ;; Note: It is assumed that the GSPACE allocation routines always
2769 ;; allocate whole pages (of size *target-page-size*) and that any
2770 ;; empty gspace between the free pointer and the end of page will
2771 ;; be zero-filled. This will always be true under Mach on machines
2772 ;; where the page size is equal. (RT is 4K, PMAX is 4K, Sun 3 is
2774 (write-sequence (gspace-bytes gspace) *core-file* :end total-bytes)
2775 (force-output *core-file*)
2776 (file-position *core-file* posn)
2778 ;; Write part of a (new) directory entry which looks like this:
2779 ;; GSPACE IDENTIFIER
2784 (write-long (gspace-identifier gspace))
2785 (write-long (gspace-free-word-index gspace))
2786 (write-long *data-page*)
2787 (multiple-value-bind (floor rem)
2788 (floor (gspace-byte-address gspace) sb!c:*backend-page-size*)
2789 ;; FIXME: Define an INSIST macro which does like ASSERT, but
2790 ;; less expensively (ERROR, not CERROR), and which reports
2791 ;; "internal error" on failure. Use it here and elsewhere in the
2793 (assert (zerop rem))
2797 (incf *data-page* pages)))
2799 ;;; Create a core file created from the cold loaded image. (This is
2800 ;;; the "initial core file" because core files could be created later
2801 ;;; by executing SAVE-LISP in a running system, perhaps after we've
2802 ;;; added some functionality to the system.)
2803 (declaim (ftype (function (string)) write-initial-core-file))
2804 (defun write-initial-core-file (filename)
2806 (let ((filenamestring (namestring filename))
2810 "[building initial core file in ~S: ~%"
2814 (with-open-file (*core-file* filenamestring
2816 :element-type '(unsigned-byte 8)
2817 :if-exists :rename-and-delete)
2819 ;; Write the magic number.
2820 (write-long core-magic)
2822 ;; Write the Version entry.
2823 (write-long version-entry-type-code)
2825 (write-long sbcl-core-version-integer)
2827 ;; Write the New Directory entry header.
2828 (write-long new-directory-entry-type-code)
2829 (write-long 17) ; length = (5 words/space) * 3 spaces + 2 for header.
2831 (output-gspace *read-only*)
2832 (output-gspace *static*)
2833 (output-gspace *dynamic*)
2835 ;; Write the initial function.
2836 (write-long initial-function-entry-type-code)
2838 (let* ((cold-name (cold-intern '!cold-init))
2839 (cold-fdefn (cold-fdefinition-object cold-name))
2840 (initial-function (read-wordindexed cold-fdefn
2841 sb!vm:fdefn-function-slot)))
2843 "~&/(DESCRIPTOR-BITS INITIAL-FUNCTION)=#X~X~%"
2844 (descriptor-bits initial-function))
2845 (write-long (descriptor-bits initial-function)))
2847 ;; Write the End entry.
2848 (write-long end-entry-type-code)
2851 (format t "done]~%")
2853 (/show "leaving WRITE-INITIAL-CORE-FILE")
2856 ;;;; the actual GENESIS function
2858 ;;; Read the FASL files in OBJECT-FILE-NAMES and produce a Lisp core,
2859 ;;; and/or information about a Lisp core, therefrom.
2861 ;;; input file arguments:
2862 ;;; SYMBOL-TABLE-FILE-NAME names a UNIX-style .nm file *with* *any*
2863 ;;; *tab* *characters* *converted* *to* *spaces*. (We push
2864 ;;; responsibility for removing tabs out to the caller it's
2865 ;;; trivial to remove them using UNIX command line tools like
2866 ;;; sed, whereas it's a headache to do it portably in Lisp because
2867 ;;; #\TAB is not a STANDARD-CHAR.) If this file is not supplied,
2868 ;;; a core file cannot be built (but a C header file can be).
2870 ;;; output files arguments (any of which may be NIL to suppress output):
2871 ;;; CORE-FILE-NAME gets a Lisp core.
2872 ;;; C-HEADER-FILE-NAME gets a C header file, traditionally called
2873 ;;; internals.h, which is used by the C compiler when constructing
2874 ;;; the executable which will load the core.
2875 ;;; MAP-FILE-NAME gets (?) a map file. (dunno about this -- WHN 19990815)
2877 ;;; other arguments:
2878 ;;; BYTE-ORDER-SWAP-P controls whether GENESIS tries to swap bytes
2879 ;;; in some places in the output. It's only appropriate when
2880 ;;; cross-compiling from a machine with one byte order to a
2881 ;;; machine with the opposite byte order, which is irrelevant in
2882 ;;; current (19990816) SBCL, since only the X86 architecture is
2883 ;;; supported. If you're trying to add support for more
2884 ;;; architectures, see the comments on DEFVAR
2885 ;;; *GENESIS-BYTE-ORDER-SWAP-P* for more information.
2887 ;;; FIXME: GENESIS doesn't belong in SB!VM. Perhaps in %KERNEL for now,
2888 ;;; perhaps eventually in SB-LD or SB-BOOT.
2889 (defun sb!vm:genesis (&key
2891 symbol-table-file-name
2897 (when (and core-file-name
2898 (not symbol-table-file-name))
2899 (error "can't output a core file without symbol table file input"))
2902 "~&beginning GENESIS, ~A~%"
2904 ;; Note: This output summarizing what we're doing is
2905 ;; somewhat telegraphic in style, not meant to imply that
2906 ;; we're not e.g. also creating a header file when we
2908 (format nil "creating core ~S" core-file-name)
2909 (format nil "creating header ~S" c-header-file-name)))
2911 (let* ((*cold-foreign-symbol-table* (make-hash-table :test 'equal)))
2913 ;; Read symbol table, if any.
2914 (when symbol-table-file-name
2915 (load-foreign-symbol-table symbol-table-file-name))
2917 ;; Now that we've successfully read our only input file (by
2918 ;; loading the symbol table, if any), it's a good time to ensure
2919 ;; that there'll be someplace for our output files to go when
2921 (flet ((frob (filename)
2923 (ensure-directories-exist filename :verbose t))))
2924 (frob core-file-name)
2925 (frob map-file-name)
2926 (frob c-header-file-name))
2928 ;; (This shouldn't matter in normal use, since GENESIS normally
2929 ;; only runs once in any given Lisp image, but it could reduce
2930 ;; confusion if we ever experiment with running, tweaking, and
2931 ;; rerunning genesis interactively.)
2932 (do-all-symbols (sym)
2933 (remprop sym 'cold-intern-info))
2935 (let* ((*foreign-symbol-placeholder-value* (if core-file-name nil 0))
2936 (*load-time-value-counter* 0)
2937 (*genesis-byte-order-swap-p* byte-order-swap-p)
2938 (*cold-fdefn-objects* (make-hash-table :test 'equal))
2939 (*cold-symbols* (make-hash-table :test 'equal))
2940 (*cold-package-symbols* nil)
2941 (*read-only* (make-gspace :read-only
2943 sb!vm:*read-only-space-start*))
2944 (*static* (make-gspace :static
2946 sb!vm:*static-space-start*))
2947 (*dynamic* (make-gspace :dynamic
2949 sb!vm:*dynamic-space-start*))
2950 (*nil-descriptor* (make-nil-descriptor))
2951 (*current-reversed-cold-toplevels* *nil-descriptor*)
2952 (*unbound-marker* (make-other-immediate-descriptor
2954 sb!vm:unbound-marker-type))
2955 *cold-assembler-fixups*
2956 *cold-assembler-routines*
2957 #!+x86 *load-time-code-fixups*)
2959 ;; Prepare for cold load.
2960 (initialize-non-nil-symbols)
2961 (initialize-layouts)
2962 (initialize-static-fns)
2964 ;; Initialize the *COLD-SYMBOLS* system with the information
2965 ;; from package-data-list.lisp-expr and
2966 ;; common-lisp-exports.lisp-expr.
2968 ;; Why do things this way? Historically, the *COLD-SYMBOLS*
2969 ;; machinery was designed and implemented in CMU CL long before
2970 ;; I (WHN) ever heard of CMU CL. It dumped symbols and packages
2971 ;; iff they were used in the cold image. When I added the
2972 ;; package-data-list.lisp-expr mechanism, the idea was to
2973 ;; centralize all information about packages and exports. Thus,
2974 ;; it was the natural place for information even about packages
2975 ;; (such as SB!PCL and SB!WALKER) which aren't used much until
2976 ;; after cold load. This didn't quite match the CMU CL approach
2977 ;; of filling *COLD-SYMBOLS* with symbols which appear in the
2978 ;; cold image and then dumping only those symbols. By explicitly
2979 ;; putting all the symbols from package-data-list.lisp-expr and
2980 ;; from common-lisp-exports.lisp-expr into *COLD-SYMBOLS* here,
2981 ;; we feed our centralized symbol information into the old CMU
2982 ;; CL code without having to change the old CMU CL code too
2983 ;; much. (And the old CMU CL code is still useful for making
2984 ;; sure that the appropriate keywords and internal symbols end
2985 ;; up interned in the target Lisp, which is good, e.g. in order
2986 ;; to make keyword arguments work right and in order to make
2987 ;; BACKTRACEs into target Lisp system code be legible.)
2988 (dolist (exported-name
2989 (sb-cold:read-from-file "common-lisp-exports.lisp-expr"))
2990 (cold-intern (intern exported-name *cl-package*)))
2991 (dolist (pd (sb-cold:read-from-file "package-data-list.lisp-expr"))
2992 (declare (type sb-cold:package-data pd))
2993 (let ((package (find-package (sb-cold:package-data-name pd))))
2994 (labels (;; Call FN on every node of the TREE.
2995 (mapc-on-tree (fn tree)
2997 (cons (mapc-on-tree fn (car tree))
2998 (mapc-on-tree fn (cdr tree)))
2999 (t (funcall fn tree)
3001 ;; Make sure that information about the association
3002 ;; between PACKAGE and the symbol named NAME gets
3003 ;; recorded in the cold-intern system or (as a
3004 ;; convenience when dealing with the tree structure
3005 ;; allowed in the PACKAGE-DATA-EXPORTS slot) do
3006 ;; nothing if NAME is NIL.
3009 (cold-intern (intern name package) package))))
3010 (mapc-on-tree #'chill (sb-cold:package-data-export pd))
3011 (mapc #'chill (sb-cold:package-data-reexport pd))
3012 (dolist (sublist (sb-cold:package-data-import-from pd))
3013 (destructuring-bind (package-name &rest symbol-names) sublist
3014 (declare (ignore package-name))
3015 (mapc #'chill symbol-names))))))
3018 (dolist (file-name object-file-names)
3019 (write-line (namestring file-name))
3020 (cold-load file-name))
3022 ;; Tidy up loose ends left by cold loading. ("Postpare from cold load?")
3023 (resolve-assembler-fixups)
3024 #!+x86 (output-load-time-code-fixups)
3025 (linkage-info-to-core)
3027 (/show "back from FINISH-SYMBOLS")
3028 (finalize-load-time-value-noise)
3030 ;; Tell the target Lisp how much stuff we've allocated.
3031 (cold-set '*read-only-space-free-pointer*
3032 (allocate-descriptor *read-only* 0 sb!vm:even-fixnum-type))
3033 (cold-set '*static-space-free-pointer*
3034 (allocate-descriptor *static* 0 sb!vm:even-fixnum-type))
3035 (cold-set '*initial-dynamic-space-free-pointer*
3036 (allocate-descriptor *dynamic* 0 sb!vm:even-fixnum-type))
3037 (/show "done setting free pointers")
3039 ;; Write results to files.
3041 ;; FIXME: I dislike this approach of redefining
3042 ;; *STANDARD-OUTPUT* instead of putting the new stream in a
3043 ;; lexical variable, and it's annoying to have WRITE-MAP (to
3044 ;; *STANDARD-OUTPUT*) not be parallel to WRITE-INITIAL-CORE-FILE
3045 ;; (to a stream explicitly passed as an argument).
3047 (with-open-file (*standard-output* map-file-name
3049 :if-exists :supersede)
3051 (when c-header-file-name
3052 (with-open-file (*standard-output* c-header-file-name
3054 :if-exists :supersede)
3056 (when core-file-name
3057 (write-initial-core-file core-file-name)))))