5 ;;; Define NAME as a fasl operation, with op-code FOP-CODE. PUSHP
6 ;;; describes what the body does to the fop stack:
8 ;;; The body might pop the fop stack. The result of the body is
9 ;;; pushed on the fop stack.
11 ;;; The body might pop the fop stack. The result of the body is
13 ;;; STACKP describes whether or not the body interacts with the fop stack.
14 (defmacro define-fop ((name fop-code &key (pushp t) (stackp t)) &rest forms)
18 `(with-fop-stack ,pushp ,@forms)
20 (%define-fop ',name ,fop-code)))
22 (defun %define-fop (name code)
23 (let ((oname (svref *fop-names* code)))
24 (when (and oname (not (eq oname name)))
25 (error "multiple names for fop code ~D: ~S and ~S" code name oname)))
26 ;; KLUDGE: It's mnemonically suboptimal to use 'FOP-CODE as the name of the
27 ;; tag which associates names with codes when it's also used as one of
28 ;; the names. Perhaps the fops named FOP-CODE and FOP-SMALL-CODE could
29 ;; be renamed to something more mnemonic? -- WHN 19990902
30 (let ((ocode (get name 'fop-code)))
31 (when (and ocode (/= ocode code))
32 (error "multiple codes for fop name ~S: ~D and ~D" name code ocode)))
33 (setf (svref *fop-names* code) name
34 (get name 'fop-code) code
35 (svref *fop-funs* code) (symbol-function name))
38 ;;; Define a pair of fops which are identical except that one reads
39 ;;; a four-byte argument while the other reads a one-byte argument. The
40 ;;; argument can be accessed by using the CLONE-ARG macro.
42 ;;; KLUDGE: It would be nice if the definition here encapsulated which
43 ;;; value ranges went with which fop variant, and chose the correct
44 ;;; fop code to use. Currently, since such logic isn't encapsulated,
45 ;;; we see callers doing stuff like
46 ;;; (cond ((and (< num-consts #x100) (< total-length #x10000))
47 ;;; (dump-fop 'sb!impl::fop-small-code file)
48 ;;; (dump-byte num-consts file)
49 ;;; (dump-integer-as-n-bytes total-length 2 file))
51 ;;; (dump-fop 'sb!impl::fop-code file)
52 ;;; (dump-word num-consts file)
53 ;;; (dump-word total-length file))))
54 ;;; in several places. It would be cleaner if this could be replaced with
56 ;;; (dump-fop file fop-code num-consts total-length)
57 ;;; Some of this logic is already in DUMP-FOP*, but that still requires the
58 ;;; caller to know that it's a 1-byte-arg/4-byte-arg cloned fop pair, and to
59 ;;; know both the 1-byte-arg and the 4-byte-arg fop names. -- WHN 19990902
60 (defmacro define-cloned-fops ((name code &key (pushp t) (stackp t))
61 (small-name small-code) &rest forms)
62 (aver (member pushp '(nil t)))
63 (aver (member stackp '(nil t)))
65 (macrolet ((clone-arg () '(read-word-arg)))
66 (define-fop (,name ,code :pushp ,pushp :stackp ,stackp) ,@forms))
67 (macrolet ((clone-arg () '(read-byte-arg)))
68 (define-fop (,small-name ,small-code :pushp ,pushp :stackp stackp) ,@forms))))
70 ;;; a helper function for reading string values from FASL files: sort
71 ;;; of like READ-SEQUENCE specialized for files of (UNSIGNED-BYTE 8),
72 ;;; with an automatic conversion from (UNSIGNED-BYTE 8) into CHARACTER
73 ;;; for each element read
74 (declaim (ftype (function (stream simple-string &optional index) (values)) read-string-as-bytes))
75 (defun read-string-as-bytes (stream string &optional (length (length string)))
78 (sb!xc:code-char (read-byte stream))))
79 ;; FIXME: The classic CMU CL code to do this was
80 ;; (READ-N-BYTES FILE STRING START END).
81 ;; It was changed for SBCL because we needed a portable version for
82 ;; bootstrapping. Benchmark the non-portable version and see whether it's
83 ;; significantly better than the portable version here. If it is, then use
84 ;; it as an alternate definition, protected with #-SB-XC-HOST.
87 ;;;; miscellaneous fops
89 ;;; FIXME: POP-STACK should be called something more mnemonic. (POP-FOP-STACK?
90 ;;; But that would conflict with PUSH-FOP-TABLE. Something, anyway..)
92 ;;; Setting this variable causes execution of a FOP-NOP4 to produce
93 ;;; output to *DEBUG-IO*. This can be handy when trying to follow the
94 ;;; progress of FASL loading.
96 (defvar *show-fop-nop4-p* nil)
98 ;;; CMU CL had a single no-op fop, FOP-NOP, with fop code 0. Since 0
99 ;;; occurs disproportionately often in fasl files for other reasons,
100 ;;; FOP-NOP is less than ideal for writing human-readable patterns
101 ;;; into fasl files for debugging purposes. There's no shortage of
102 ;;; unused fop codes, so we add this second NOP, which reads 4
103 ;;; arbitrary bytes and discards them.
104 (define-fop (fop-nop4 137 :stackp nil)
105 (let ((arg (read-arg 4)))
106 (declare (ignorable arg))
108 (when *show-fop-nop4-p*
109 (format *debug-io* "~&/FOP-NOP4 ARG=~W=#X~X~%" arg arg))))
111 (define-fop (fop-nop 0 :stackp nil))
112 (define-fop (fop-pop 1 :pushp nil) (push-fop-table (pop-stack)))
113 (define-fop (fop-push 2) (svref *current-fop-table* (read-word-arg)))
114 (define-fop (fop-byte-push 3) (svref *current-fop-table* (read-byte-arg)))
116 (define-fop (fop-empty-list 4) ())
117 (define-fop (fop-truth 5) t)
118 ;;; CMU CL had FOP-POP-FOR-EFFECT as fop 65, but it was never used and seemed
119 ;;; to have no possible use.
120 (define-fop (fop-misc-trap 66)
121 #+sb-xc-host ; since xc host doesn't know how to compile %PRIMITIVE
122 (error "FOP-MISC-TRAP can't be defined without %PRIMITIVE.")
124 (%primitive sb!c:make-other-immediate-type 0 sb!vm:unbound-marker-widetag))
126 (define-cloned-fops (fop-character 68) (fop-short-character 69)
127 (code-char (clone-arg)))
129 (define-cloned-fops (fop-struct 48) (fop-small-struct 49)
130 (let* ((size (clone-arg))
131 (res (%make-instance size)))
132 (declare (type index size))
133 (do ((n (1- size) (1- n)))
135 (declare (type index-or-minus-1 n))
136 (setf (%instance-ref res n) (pop-stack)))
139 (define-fop (fop-layout 45)
140 (let ((length (pop-stack))
141 (depthoid (pop-stack))
142 (inherits (pop-stack))
144 (find-and-init-or-check-layout name length inherits depthoid)))
146 (define-fop (fop-end-group 64 :stackp nil)
147 (/show0 "THROWing FASL-GROUP-END")
148 (throw 'fasl-group-end t))
150 ;;; In the normal loader, we just ignore these. GENESIS overwrites
151 ;;; FOP-MAYBE-COLD-LOAD with something that knows whether to revert to
152 ;;; cold-loading or not.
153 (define-fop (fop-normal-load 81 :stackp nil))
154 (define-fop (fop-maybe-cold-load 82 :stackp nil))
156 (define-fop (fop-verify-table-size 62 :stackp nil)
157 (let ((expected-index (read-word-arg)))
158 (unless (= *current-fop-table-index* expected-index)
159 (bug "fasl table of improper size"))))
160 (define-fop (fop-verify-empty-stack 63 :stackp nil)
161 (unless (zerop (length *fop-stack*))
162 (bug "fasl stack not empty when it should be")))
164 ;;;; fops for loading symbols
166 (macrolet (;; FIXME: Should all this code really be duplicated inside
167 ;; each fop? Perhaps it would be better for this shared
168 ;; code to live in FLET FROB1 and FLET FROB4 (for the
169 ;; two different sizes of counts).
170 (frob (name code name-size package)
171 (let ((n-package (gensym))
174 `(define-fop (,name ,code)
175 (prepare-for-fast-read-byte *fasl-input-stream*
176 (let ((,n-package ,package)
177 (,n-size (fast-read-u-integer ,name-size)))
178 (when (> ,n-size (length *fasl-symbol-buffer*))
179 (setq *fasl-symbol-buffer*
180 (make-string (* ,n-size 2))))
181 (done-with-fast-read-byte)
182 (let ((,n-buffer *fasl-symbol-buffer*))
183 (read-string-as-bytes *fasl-input-stream*
186 (push-fop-table (without-package-locks
191 ;; Note: CMU CL had FOP-SYMBOL-SAVE and FOP-SMALL-SYMBOL-SAVE, but
192 ;; since they made the behavior of the fasloader depend on the
193 ;; *PACKAGE* variable, not only were they a pain to support (because
194 ;; they required various hacks to handle *PACKAGE*-manipulation
195 ;; forms) they were basically broken by design, because ANSI gives
196 ;; the user so much flexibility in manipulating *PACKAGE* at
197 ;; load-time that no reasonable hacks could possibly make things
198 ;; work right. The ones used in CMU CL certainly didn't, as shown by
200 ;; (IN-PACKAGE :CL-USER)
201 ;; (DEFVAR CL::*FOO* 'FOO-VALUE)
202 ;; (EVAL-WHEN (:COMPILE-TOPLEVEL :LOAD-TOPLEVEL :EXECUTE)
203 ;; (SETF *PACKAGE* (FIND-PACKAGE :CL)))
204 ;; which in CMU CL 2.4.9 defines a variable CL-USER::*FOO* instead of
205 ;; defining CL::*FOO*. Therefore, we don't use those fops in SBCL.
206 ;;(frob fop-symbol-save 6 4 *package*)
207 ;;(frob fop-small-symbol-save 7 1 *package*)
209 (frob fop-lisp-symbol-save 75 #.sb!vm:n-word-bytes *cl-package*)
210 (frob fop-lisp-small-symbol-save 76 1 *cl-package*)
211 (frob fop-keyword-symbol-save 77 #.sb!vm:n-word-bytes *keyword-package*)
212 (frob fop-keyword-small-symbol-save 78 1 *keyword-package*)
214 ;; FIXME: Because we don't have FOP-SYMBOL-SAVE any more, an enormous number
215 ;; of symbols will fall through to this case, probably resulting in bloated
217 ;; FOP-SYMBOL-IN-LAST-PACKAGE-SAVE/FOP-SMALL-SYMBOL-IN-LAST-PACKAGE-SAVE
218 ;; cloned fop pair could undo some of this bloat.
219 (frob fop-symbol-in-package-save 8 #.sb!vm:n-word-bytes
220 (svref *current-fop-table* (fast-read-u-integer #.sb!vm:n-word-bytes)))
221 (frob fop-small-symbol-in-package-save 9 1
222 (svref *current-fop-table* (fast-read-u-integer #.sb!vm:n-word-bytes)))
223 (frob fop-symbol-in-byte-package-save 10 #.sb!vm:n-word-bytes
224 (svref *current-fop-table* (fast-read-u-integer 1)))
225 (frob fop-small-symbol-in-byte-package-save 11 1
226 (svref *current-fop-table* (fast-read-u-integer 1))))
228 (define-cloned-fops (fop-uninterned-symbol-save 12)
229 (fop-uninterned-small-symbol-save 13)
230 (let* ((arg (clone-arg))
231 (res (make-string arg)))
232 (read-string-as-bytes *fasl-input-stream* res)
233 (push-fop-table (make-symbol res))))
235 (define-fop (fop-package 14)
236 (find-undeleted-package-or-lose (pop-stack)))
238 ;;;; fops for loading numbers
240 ;;; Load a signed integer LENGTH bytes long from *FASL-INPUT-STREAM*.
241 (defun load-s-integer (length)
242 (declare (fixnum length))
243 ;; #+cmu (declare (optimize (inhibit-warnings 2)))
244 (do* ((index length (1- index))
245 (byte 0 (read-byte *fasl-input-stream*))
246 (result 0 (+ result (ash byte bits)))
249 (if (logbitp 7 byte) ; look at sign bit
250 (- result (ash 1 bits))
252 (declare (fixnum index byte bits))))
254 (define-cloned-fops (fop-integer 33) (fop-small-integer 34)
255 (load-s-integer (clone-arg)))
257 (define-fop (fop-word-integer 35)
258 (prepare-for-fast-read-byte *fasl-input-stream*
260 (fast-read-s-integer #.sb!vm:n-word-bytes)
261 (done-with-fast-read-byte))))
263 (define-fop (fop-byte-integer 36)
264 (prepare-for-fast-read-byte *fasl-input-stream*
266 (fast-read-s-integer 1)
267 (done-with-fast-read-byte))))
269 (define-fop (fop-ratio 70)
270 (let ((den (pop-stack)))
271 (%make-ratio (pop-stack) den)))
273 (define-fop (fop-complex 71)
274 (let ((im (pop-stack)))
275 (%make-complex (pop-stack) im)))
277 (macrolet ((fast-read-single-float ()
278 '(make-single-float (fast-read-s-integer 4)))
279 (fast-read-double-float ()
280 '(let ((lo (fast-read-u-integer 4)))
281 (make-double-float (fast-read-s-integer 4) lo))))
282 (macrolet ((define-complex-fop (name fop-code type)
283 (let ((reader (symbolicate "FAST-READ-" type)))
284 `(define-fop (,name ,fop-code)
285 (prepare-for-fast-read-byte *fasl-input-stream*
287 (complex (,reader) (,reader))
288 (done-with-fast-read-byte))))))
289 (define-float-fop (name fop-code type)
290 (let ((reader (symbolicate "FAST-READ-" type)))
291 `(define-fop (,name ,fop-code)
292 (prepare-for-fast-read-byte *fasl-input-stream*
295 (done-with-fast-read-byte)))))))
296 (define-complex-fop fop-complex-single-float 72 single-float)
297 (define-complex-fop fop-complex-double-float 73 double-float)
299 (define-complex-fop fop-complex-long-float 67 long-float)
300 (define-float-fop fop-single-float 46 single-float)
301 (define-float-fop fop-double-float 47 double-float)
303 (define-float-fop fop-long-float 52 long-float)))
308 (define-fop (fop-list 15)
309 (do ((res () (cons (pop-stack) res))
310 (n (read-byte-arg) (1- n)))
312 (declare (type index n))))
314 (define-fop (fop-list* 16)
315 (do ((res (pop-stack) (cons (pop-stack) res))
316 (n (read-byte-arg) (1- n)))
318 (declare (type index n))))
320 (macrolet ((frob (name op fun n)
321 `(define-fop (,name ,op)
322 (call-with-popped-args ,fun ,n))))
324 (frob fop-list-1 17 list 1)
325 (frob fop-list-2 18 list 2)
326 (frob fop-list-3 19 list 3)
327 (frob fop-list-4 20 list 4)
328 (frob fop-list-5 21 list 5)
329 (frob fop-list-6 22 list 6)
330 (frob fop-list-7 23 list 7)
331 (frob fop-list-8 24 list 8)
333 (frob fop-list*-1 25 list* 2)
334 (frob fop-list*-2 26 list* 3)
335 (frob fop-list*-3 27 list* 4)
336 (frob fop-list*-4 28 list* 5)
337 (frob fop-list*-5 29 list* 6)
338 (frob fop-list*-6 30 list* 7)
339 (frob fop-list*-7 31 list* 8)
340 (frob fop-list*-8 32 list* 9))
342 ;;;; fops for loading arrays
344 (define-cloned-fops (fop-base-string 37) (fop-small-base-string 38)
345 (let* ((arg (clone-arg))
346 (res (make-string arg :element-type 'base-char)))
347 (read-string-as-bytes *fasl-input-stream* res)
350 (define-cloned-fops (fop-vector 39) (fop-small-vector 40)
351 (let* ((size (clone-arg))
352 (res (make-array size)))
353 (declare (fixnum size))
354 (do ((n (1- size) (1- n)))
356 (setf (svref res n) (pop-stack)))
359 (define-fop (fop-array 83)
360 (let* ((rank (read-word-arg))
362 (length (length vec))
363 (res (make-array-header sb!vm:simple-array-widetag rank)))
364 (declare (simple-array vec)
365 (type (unsigned-byte #.(- sb!vm:n-word-bits sb!vm:n-widetag-bits)) rank))
366 (set-array-header res vec length nil 0
368 (dimensions () (cons (pop-stack) dimensions)))
369 ((zerop i) dimensions)
370 (declare (type index i)))
374 (define-fop (fop-single-float-vector 84)
375 (let* ((length (read-word-arg))
376 (result (make-array length :element-type 'single-float)))
377 (read-n-bytes *fasl-input-stream* result 0 (* length 4))
380 (define-fop (fop-double-float-vector 85)
381 (let* ((length (read-word-arg))
382 (result (make-array length :element-type 'double-float)))
383 (read-n-bytes *fasl-input-stream* result 0 (* length 8))
386 (define-fop (fop-complex-single-float-vector 86)
387 (let* ((length (read-word-arg))
388 (result (make-array length :element-type '(complex single-float))))
389 (read-n-bytes *fasl-input-stream* result 0 (* length 8))
392 (define-fop (fop-complex-double-float-vector 87)
393 (let* ((length (read-word-arg))
394 (result (make-array length :element-type '(complex double-float))))
395 (read-n-bytes *fasl-input-stream* result 0 (* length 16))
399 ;;; *** NOT *** the FOP-INT-VECTOR as currently documented in rtguts.
400 ;;; Size must be a directly supported I-vector element size, with no
401 ;;; extra bits. This must be packed according to the local
402 ;;; byte-ordering, allowing us to directly read the bits.
403 (define-fop (fop-int-vector 43)
404 (prepare-for-fast-read-byte *fasl-input-stream*
405 (let* ((len (fast-read-u-integer #.sb!vm:n-word-bytes))
406 (size (fast-read-byte))
408 (0 (make-array len :element-type 'nil))
409 (1 (make-array len :element-type 'bit))
410 (2 (make-array len :element-type '(unsigned-byte 2)))
411 (4 (make-array len :element-type '(unsigned-byte 4)))
412 (7 (prog1 (make-array len :element-type '(unsigned-byte 7))
414 (8 (make-array len :element-type '(unsigned-byte 8)))
415 (15 (prog1 (make-array len :element-type '(unsigned-byte 15))
417 (16 (make-array len :element-type '(unsigned-byte 16)))
418 (31 (prog1 (make-array len :element-type '(unsigned-byte 31))
420 (32 (make-array len :element-type '(unsigned-byte 32)))
421 #!+#.(cl:if (cl:= 64 sb!vm:n-word-bits) '(and) '(or))
422 (63 (prog1 (make-array len :element-type '(unsigned-byte 63))
424 (64 (make-array len :element-type '(unsigned-byte 64)))
425 (t (bug "losing i-vector element size: ~S" size)))))
426 (declare (type index len))
427 (done-with-fast-read-byte)
428 (read-n-bytes *fasl-input-stream*
431 (ceiling (the index (* size len)) sb!vm:n-byte-bits))
434 ;;; This is the same as FOP-INT-VECTOR, except this is for signed
436 (define-fop (fop-signed-int-vector 50)
437 (prepare-for-fast-read-byte *fasl-input-stream*
438 (let* ((len (fast-read-u-integer #.sb!vm:n-word-bytes))
439 (size (fast-read-byte))
441 (8 (make-array len :element-type '(signed-byte 8)))
442 (16 (make-array len :element-type '(signed-byte 16)))
443 #!+#.(cl:if (cl:= 32 sb!vm:n-word-bits) '(and) '(or))
444 (29 (prog1 (make-array len :element-type '(unsigned-byte 29))
446 #!+#.(cl:if (cl:= 32 sb!vm:n-word-bits) '(and) '(or))
447 (30 (prog1 (make-array len :element-type '(signed-byte 30))
449 (32 (make-array len :element-type '(signed-byte 32)))
450 #!+#.(cl:if (cl:= 64 sb!vm:n-word-bits) '(and) '(or))
451 (60 (prog1 (make-array len :element-type '(unsigned-byte 60))
453 #!+#.(cl:if (cl:= 64 sb!vm:n-word-bits) '(and) '(or))
454 (61 (prog1 (make-array len :element-type '(signed-byte 61))
456 #!+#.(cl:if (cl:= 64 sb!vm:n-word-bits) '(and) '(or))
457 (64 (make-array len :element-type '(signed-byte 64)))
458 (t (bug "losing si-vector element size: ~S" size)))))
459 (declare (type index len))
460 (done-with-fast-read-byte)
461 (read-n-bytes *fasl-input-stream*
464 (ceiling (the index (* size len)) sb!vm:n-byte-bits))
467 (define-fop (fop-eval 53)
468 (let ((result (eval (pop-stack))))
469 ;; FIXME: CMU CL had this code here:
470 ;; (when *load-print*
474 ;; Unfortunately, this dependence on the *LOAD-PRINT* global
475 ;; variable is non-ANSI, so for now we've just punted printing in
479 (define-fop (fop-eval-for-effect 54 :pushp nil)
480 (let ((result (eval (pop-stack))))
481 ;; FIXME: See the comment about *LOAD-PRINT* in FOP-EVAL.
482 (declare (ignore result))
483 #+nil (when *load-print*
488 (define-fop (fop-funcall 55)
489 (let ((arg (read-byte-arg)))
491 (funcall (pop-stack))
492 (do ((args () (cons (pop-stack) args))
494 ((zerop n) (apply (pop-stack) args))
495 (declare (type index n))))))
497 (define-fop (fop-funcall-for-effect 56 :pushp nil)
498 (let ((arg (read-byte-arg)))
500 (funcall (pop-stack))
501 (do ((args () (cons (pop-stack) args))
503 ((zerop n) (apply (pop-stack) args))
504 (declare (type index n))))))
506 ;;;; fops for fixing up circularities
508 (define-fop (fop-rplaca 200 :pushp nil)
509 (let ((obj (svref *current-fop-table* (read-word-arg)))
510 (idx (read-word-arg))
512 (setf (car (nthcdr idx obj)) val)))
514 (define-fop (fop-rplacd 201 :pushp nil)
515 (let ((obj (svref *current-fop-table* (read-word-arg)))
516 (idx (read-word-arg))
518 (setf (cdr (nthcdr idx obj)) val)))
520 (define-fop (fop-svset 202 :pushp nil)
521 (let* ((obi (read-word-arg))
522 (obj (svref *current-fop-table* obi))
523 (idx (read-word-arg))
525 (if (typep obj 'instance)
526 (setf (%instance-ref obj idx) val)
527 (setf (svref obj idx) val))))
529 (define-fop (fop-structset 204 :pushp nil)
530 (setf (%instance-ref (svref *current-fop-table* (read-word-arg))
534 ;;; In the original CMUCL code, this actually explicitly declared PUSHP
535 ;;; to be T, even though that's what it defaults to in DEFINE-FOP.
536 (define-fop (fop-nthcdr 203)
537 (nthcdr (read-word-arg) (pop-stack)))
539 ;;;; fops for loading functions
541 ;;; (In CMU CL there was a FOP-CODE-FORMAT (47) which was
542 ;;; conventionally placed at the beginning of each fasl file to test
543 ;;; for compatibility between the fasl file and the CMU CL which
544 ;;; loaded it. In SBCL, this functionality has been replaced by
545 ;;; putting the implementation and version in required fields in the
546 ;;; fasl file header.)
548 (define-fop (fop-code 58 :stackp nil)
549 (load-code (read-word-arg) (read-word-arg)))
551 (define-fop (fop-small-code 59 :stackp nil)
552 (load-code (read-byte-arg) (read-halfword-arg)))
554 (define-fop (fop-fdefinition 60)
555 (fdefinition-object (pop-stack) t))
557 (define-fop (fop-sanctify-for-execution 61)
558 (let ((component (pop-stack)))
559 (sb!vm:sanctify-for-execution component)
562 (define-fop (fop-fset 74 :pushp nil)
563 ;; Ordinary, not-for-cold-load code shouldn't need to mess with this
564 ;; at all, since it's only used as part of the conspiracy between
565 ;; the cross-compiler and GENESIS to statically link FDEFINITIONs
567 (warn "~@<FOP-FSET seen in ordinary load (not cold load) -- quite strange! ~
568 If you didn't do something strange to cause this, please report it as a ~
570 ;; Unlike CMU CL, we don't treat this as a no-op in ordinary code.
571 ;; If the user (or, more likely, developer) is trying to reload
572 ;; compiled-for-cold-load code into a warm SBCL, we'll do a warm
573 ;; assignment. (This is partly for abstract tidiness, since the warm
574 ;; assignment is the closest analogy to what happens at cold load,
575 ;; and partly because otherwise our compiled-for-cold-load code will
576 ;; fail, since in SBCL things like compiled-for-cold-load %DEFUN
577 ;; depend more strongly than in CMU CL on FOP-FSET actually doing
579 (let ((fn (pop-stack))
581 (setf (fdefinition name) fn)))
583 ;;; Modify a slot in a CONSTANTS object.
584 (define-cloned-fops (fop-alter-code 140 :pushp nil) (fop-byte-alter-code 141)
585 (let ((value (pop-stack))
587 (setf (code-header-ref code (clone-arg)) value)
590 (define-fop (fop-fun-entry 142)
591 #+sb-xc-host ; since xc host doesn't know how to compile %PRIMITIVE
592 (error "FOP-FUN-ENTRY can't be defined without %PRIMITIVE.")
594 (let ((type (pop-stack))
595 (arglist (pop-stack))
597 (code-object (pop-stack))
598 (offset (read-word-arg)))
599 (declare (type index offset))
600 (unless (zerop (logand offset sb!vm:lowtag-mask))
601 (bug "unaligned function object, offset = #X~X" offset))
602 (let ((fun (%primitive sb!c:compute-fun code-object offset)))
603 (setf (%simple-fun-self fun) fun)
604 (setf (%simple-fun-next fun) (%code-entry-points code-object))
605 (setf (%code-entry-points code-object) fun)
606 (setf (%simple-fun-name fun) name)
607 (setf (%simple-fun-arglist fun) arglist)
608 (setf (%simple-fun-type fun) type)
609 ;; FIXME: See the comment about *LOAD-PRINT* in FOP-EVAL.
610 #+nil (when *load-print*
612 (format t "~S defined~%" fun))
615 ;;;; Some Dylan FOPs used to live here. By 1 November 1998 the code
616 ;;;; was sufficiently stale that the functions it called were no
617 ;;;; longer defined, so I (William Harold Newman) deleted it.
619 ;;;; In case someone in the future is trying to make sense of FOP layout,
620 ;;;; it might be worth recording that the Dylan FOPs were
621 ;;;; 100 FOP-DYLAN-SYMBOL-SAVE
622 ;;;; 101 FOP-SMALL-DYLAN-SYMBOL-SAVE
623 ;;;; 102 FOP-DYLAN-KEYWORD-SAVE
624 ;;;; 103 FOP-SMALL-DYLAN-KEYWORD-SAVE
625 ;;;; 104 FOP-DYLAN-VARINFO-VALUE
627 ;;;; assemblerish fops
629 (define-fop (fop-assembler-code 144)
630 (error "cannot load assembler code except at cold load"))
632 (define-fop (fop-assembler-routine 145)
633 (error "cannot load assembler code except at cold load"))
635 (define-fop (fop-foreign-fixup 147)
636 (let* ((kind (pop-stack))
637 (code-object (pop-stack))
638 (len (read-byte-arg))
639 (sym (make-string len :element-type 'base-char)))
640 (read-n-bytes *fasl-input-stream* sym 0 len)
641 (sb!vm:fixup-code-object code-object
643 (foreign-symbol-address-as-integer sym)
647 (define-fop (fop-assembler-fixup 148)
648 (let ((routine (pop-stack))
650 (code-object (pop-stack)))
651 (multiple-value-bind (value found) (gethash routine *assembler-routines*)
653 (error "undefined assembler routine: ~S" routine))
654 (sb!vm:fixup-code-object code-object (read-word-arg) value kind))
657 (define-fop (fop-code-object-fixup 149)
658 (let ((kind (pop-stack))
659 (code-object (pop-stack)))
660 ;; Note: We don't have to worry about GC moving the code-object after
661 ;; the GET-LISP-OBJ-ADDRESS and before that value is deposited, because
662 ;; we can only use code-object fixups when code-objects don't move.
663 (sb!vm:fixup-code-object code-object (read-word-arg)
664 (get-lisp-obj-address code-object) kind)
668 (define-fop (fop-foreign-dataref-fixup 150)
669 (let* ((kind (pop-stack))
670 (code-object (pop-stack))
671 (len (read-byte-arg))
672 (sym (make-string len)))
673 (read-n-bytes *fasl-input-stream* sym 0 len)
674 (sb!vm:fixup-code-object code-object
676 (foreign-symbol-address-as-integer sym t)