5 ;;; Sometimes we want to skip over any FOPs with side-effects (like
6 ;;; function calls) while executing other FOPs. *SKIP-UNTIL* will
7 ;;; either contain the position where the skipping will stop, or
8 ;;; NIL if we're executing normally.
9 (defvar *skip-until
* nil
)
11 ;;; Define NAME as a fasl operation, with op-code FOP-CODE. PUSHP
12 ;;; describes what the body does to the fop stack:
14 ;;; The body might pop the fop stack. The result of the body is
15 ;;; pushed on the fop stack.
17 ;;; The body might pop the fop stack. The result of the body is
19 ;;; STACKP describes whether or not the body interacts with the fop stack.
20 (defmacro define-fop
((name fop-code
&key
(pushp t
) (stackp t
)) &rest forms
)
24 `(with-fop-stack ,pushp
,@forms
)
26 (%define-fop
',name
,fop-code
)))
28 (defun %define-fop
(name code
)
29 (let ((oname (svref *fop-names
* code
)))
30 (when (and oname
(not (eq oname name
)))
31 (error "multiple names for fop code ~D: ~S and ~S" code name oname
)))
32 ;; KLUDGE: It's mnemonically suboptimal to use 'FOP-CODE as the name of the
33 ;; tag which associates names with codes when it's also used as one of
34 ;; the names. Perhaps the fops named FOP-CODE and FOP-SMALL-CODE could
35 ;; be renamed to something more mnemonic? -- WHN 19990902
36 (let ((ocode (get name
'fop-code
)))
37 (when (and ocode
(/= ocode code
))
38 (error "multiple codes for fop name ~S: ~D and ~D" name code ocode
)))
39 (setf (svref *fop-names
* code
) name
40 (get name
'fop-code
) code
41 (svref *fop-funs
* code
) (symbol-function name
))
44 ;;; Define a pair of fops which are identical except that one reads
45 ;;; a four-byte argument while the other reads a one-byte argument. The
46 ;;; argument can be accessed by using the CLONE-ARG macro.
48 ;;; KLUDGE: It would be nice if the definition here encapsulated which
49 ;;; value ranges went with which fop variant, and chose the correct
50 ;;; fop code to use. Currently, since such logic isn't encapsulated,
51 ;;; we see callers doing stuff like
52 ;;; (cond ((and (< num-consts #x100) (< total-length #x10000))
53 ;;; (dump-fop 'sb!impl::fop-small-code file)
54 ;;; (dump-byte num-consts file)
55 ;;; (dump-integer-as-n-bytes total-length 2 file))
57 ;;; (dump-fop 'sb!impl::fop-code file)
58 ;;; (dump-word num-consts file)
59 ;;; (dump-word total-length file))))
60 ;;; in several places. It would be cleaner if this could be replaced with
62 ;;; (dump-fop file fop-code num-consts total-length)
63 ;;; Some of this logic is already in DUMP-FOP*, but that still requires the
64 ;;; caller to know that it's a 1-byte-arg/4-byte-arg cloned fop pair, and to
65 ;;; know both the 1-byte-arg and the 4-byte-arg fop names. -- WHN 19990902
66 (defmacro define-cloned-fops
((name code
&key
(pushp t
) (stackp t
))
67 (small-name small-code
) &rest forms
)
68 (aver (member pushp
'(nil t
)))
69 (aver (member stackp
'(nil t
)))
71 (macrolet ((clone-arg () '(read-word-arg)))
72 (define-fop (,name
,code
:pushp
,pushp
:stackp
,stackp
) ,@forms
))
73 (macrolet ((clone-arg () '(read-byte-arg)))
74 (define-fop (,small-name
,small-code
:pushp
,pushp
:stackp
,stackp
) ,@forms
))))
76 ;;; a helper function for reading string values from FASL files: sort
77 ;;; of like READ-SEQUENCE specialized for files of (UNSIGNED-BYTE 8),
78 ;;; with an automatic conversion from (UNSIGNED-BYTE 8) into CHARACTER
79 ;;; for each element read
80 (declaim (ftype (function (stream simple-string
&optional index
) (values))
82 #!+sb-unicode read-string-as-unsigned-byte-32
))
83 (defun read-string-as-bytes (stream string
&optional
(length (length string
)))
86 (sb!xc
:code-char
(read-byte stream
))))
87 ;; FIXME: The classic CMU CL code to do this was
88 ;; (READ-N-BYTES FILE STRING START END).
89 ;; It was changed for SBCL because we needed a portable version for
90 ;; bootstrapping. Benchmark the non-portable version and see whether it's
91 ;; significantly better than the portable version here. If it is, then use
92 ;; it as an alternate definition, protected with #-SB-XC-HOST.
95 (defun read-string-as-unsigned-byte-32
96 (stream string
&optional
(length (length string
)))
97 #+sb-xc-host
(bug "READ-STRING-AS-UNSIGNED-BYTE-32 called")
101 (dotimes (k 4 (sb!xc
:code-char code
))
102 (setf code
(logior code
(ash (read-byte stream
)
103 (* k sb
!vm
:n-byte-bits
))))))))
106 ;;;; miscellaneous fops
108 ;;; FIXME: POP-STACK should be called something more mnemonic. (POP-FOP-STACK?
109 ;;; But that would conflict with PUSH-FOP-TABLE. Something, anyway..)
111 ;;; Setting this variable causes execution of a FOP-NOP4 to produce
112 ;;; output to *DEBUG-IO*. This can be handy when trying to follow the
113 ;;; progress of FASL loading.
115 (defvar *show-fop-nop4-p
* nil
)
117 ;;; CMU CL had a single no-op fop, FOP-NOP, with fop code 0. Since 0
118 ;;; occurs disproportionately often in fasl files for other reasons,
119 ;;; FOP-NOP is less than ideal for writing human-readable patterns
120 ;;; into fasl files for debugging purposes. There's no shortage of
121 ;;; unused fop codes, so we add this second NOP, which reads 4
122 ;;; arbitrary bytes and discards them.
123 (define-fop (fop-nop4 137 :stackp nil
)
124 (let ((arg (read-arg 4)))
125 (declare (ignorable arg
))
127 (when *show-fop-nop4-p
*
128 (format *debug-io
* "~&/FOP-NOP4 ARG=~W=#X~X~%" arg arg
))))
130 (define-fop (fop-nop 0 :stackp nil
))
131 (define-fop (fop-pop 1 :pushp nil
) (push-fop-table (pop-stack)))
132 (define-fop (fop-push 2) (svref *current-fop-table
* (read-word-arg)))
133 (define-fop (fop-byte-push 3) (svref *current-fop-table
* (read-byte-arg)))
135 (define-fop (fop-empty-list 4) ())
136 (define-fop (fop-truth 5) t
)
137 ;;; CMU CL had FOP-POP-FOR-EFFECT as fop 65, but it was never used and seemed
138 ;;; to have no possible use.
139 (define-fop (fop-misc-trap 66)
140 #+sb-xc-host
; since xc host doesn't know how to compile %PRIMITIVE
141 (error "FOP-MISC-TRAP can't be defined without %PRIMITIVE.")
143 (%primitive sb
!c
:make-other-immediate-type
0 sb
!vm
:unbound-marker-widetag
))
145 (define-cloned-fops (fop-character 68) (fop-short-character 69)
146 (code-char (clone-arg)))
148 (define-cloned-fops (fop-struct 48) (fop-small-struct 49)
149 (let* ((size (clone-arg))
150 (res (%make-instance size
)))
151 (declare (type index size
))
152 (let* ((layout (pop-stack))
153 (nuntagged (layout-n-untagged-slots layout
))
154 (ntagged (- size nuntagged
)))
155 (setf (%instance-ref res
0) layout
)
156 (dotimes (n (1- ntagged
))
157 (declare (type index n
))
158 (setf (%instance-ref res
(1+ n
)) (pop-stack)))
159 (dotimes (n nuntagged
)
160 (declare (type index n
))
161 (setf (%raw-instance-ref
/word res
(- nuntagged n
1)) (pop-stack))))
164 (define-fop (fop-layout 45)
165 (let ((nuntagged (pop-stack))
167 (depthoid (pop-stack))
168 (inherits (pop-stack))
170 (find-and-init-or-check-layout name length inherits depthoid nuntagged
)))
172 (define-fop (fop-end-group 64 :stackp nil
)
173 (/show0
"THROWing FASL-GROUP-END")
174 (throw 'fasl-group-end t
))
176 ;;; We used to have FOP-NORMAL-LOAD as 81 and FOP-MAYBE-COLD-LOAD as
177 ;;; 82 until GENESIS learned how to work with host symbols and
178 ;;; packages directly instead of piggybacking on the host code.
180 (define-fop (fop-verify-table-size 62 :stackp nil
)
181 (let ((expected-index (read-word-arg)))
182 (unless (= *current-fop-table-index
* expected-index
)
183 (bug "fasl table of improper size"))))
184 (define-fop (fop-verify-empty-stack 63 :stackp nil
)
185 (unless (zerop (length *fop-stack
*))
186 (bug "fasl stack not empty when it should be")))
188 ;;;; fops for loading symbols
190 (macrolet (;; FIXME: Should all this code really be duplicated inside
191 ;; each fop? Perhaps it would be better for this shared
192 ;; code to live in FLET FROB1 and FLET FROB4 (for the
193 ;; two different sizes of counts).
194 (frob (name code name-size package
)
195 (let ((n-package (gensym))
198 `(define-fop (,name
,code
)
199 (prepare-for-fast-read-byte *fasl-input-stream
*
200 (let ((,n-package
,package
)
201 (,n-size
(fast-read-u-integer ,name-size
)))
202 (when (> ,n-size
(length *fasl-symbol-buffer
*))
203 (setq *fasl-symbol-buffer
*
204 (make-string (* ,n-size
2))))
205 (done-with-fast-read-byte)
206 (let ((,n-buffer
*fasl-symbol-buffer
*))
208 (read-string-as-bytes *fasl-input-stream
*
212 (#!+sb-unicode read-string-as-unsigned-byte-32
213 #!-sb-unicode read-string-as-bytes
217 (push-fop-table (without-package-locks
222 ;; Note: CMU CL had FOP-SYMBOL-SAVE and FOP-SMALL-SYMBOL-SAVE, but
223 ;; since they made the behavior of the fasloader depend on the
224 ;; *PACKAGE* variable, not only were they a pain to support (because
225 ;; they required various hacks to handle *PACKAGE*-manipulation
226 ;; forms) they were basically broken by design, because ANSI gives
227 ;; the user so much flexibility in manipulating *PACKAGE* at
228 ;; load-time that no reasonable hacks could possibly make things
229 ;; work right. The ones used in CMU CL certainly didn't, as shown by
231 ;; (IN-PACKAGE :CL-USER)
232 ;; (DEFVAR CL::*FOO* 'FOO-VALUE)
233 ;; (EVAL-WHEN (:COMPILE-TOPLEVEL :LOAD-TOPLEVEL :EXECUTE)
234 ;; (SETF *PACKAGE* (FIND-PACKAGE :CL)))
235 ;; which in CMU CL 2.4.9 defines a variable CL-USER::*FOO* instead of
236 ;; defining CL::*FOO*. Therefore, we don't use those fops in SBCL.
237 ;;(frob fop-symbol-save 6 4 *package*)
238 ;;(frob fop-small-symbol-save 7 1 *package*)
240 (frob fop-lisp-symbol-save
75 #.sb
!vm
:n-word-bytes
*cl-package
*)
241 (frob fop-lisp-small-symbol-save
76 1 *cl-package
*)
242 (frob fop-keyword-symbol-save
77 #.sb
!vm
:n-word-bytes
*keyword-package
*)
243 (frob fop-keyword-small-symbol-save
78 1 *keyword-package
*)
245 ;; FIXME: Because we don't have FOP-SYMBOL-SAVE any more, an enormous number
246 ;; of symbols will fall through to this case, probably resulting in bloated
248 ;; FOP-SYMBOL-IN-LAST-PACKAGE-SAVE/FOP-SMALL-SYMBOL-IN-LAST-PACKAGE-SAVE
249 ;; cloned fop pair could undo some of this bloat.
250 (frob fop-symbol-in-package-save
8 #.sb
!vm
:n-word-bytes
251 (svref *current-fop-table
* (fast-read-u-integer #.sb
!vm
:n-word-bytes
)))
252 (frob fop-small-symbol-in-package-save
9 1
253 (svref *current-fop-table
* (fast-read-u-integer #.sb
!vm
:n-word-bytes
)))
254 (frob fop-symbol-in-byte-package-save
10 #.sb
!vm
:n-word-bytes
255 (svref *current-fop-table
* (fast-read-u-integer 1)))
256 (frob fop-small-symbol-in-byte-package-save
11 1
257 (svref *current-fop-table
* (fast-read-u-integer 1))))
259 (define-cloned-fops (fop-uninterned-symbol-save 12)
260 (fop-uninterned-small-symbol-save 13)
261 (let* ((arg (clone-arg))
262 (res (make-string arg
)))
264 (read-string-as-bytes *fasl-input-stream
* res
)
266 (read-string-as-unsigned-byte-32 *fasl-input-stream
* res
)
267 (push-fop-table (make-symbol res
))))
269 (define-fop (fop-package 14)
270 (find-undeleted-package-or-lose (pop-stack)))
272 (define-cloned-fops (fop-named-package-save 156 :stackp nil
)
273 (fop-small-named-package-save 157)
274 (let* ((arg (clone-arg))
275 (package-name (make-string arg
)))
277 (read-string-as-bytes *fasl-input-stream
* package-name
)
279 (#!-sb-unicode read-string-as-bytes
280 #!+sb-unicode read-string-as-unsigned-byte-32
281 *fasl-input-stream
* package-name
)
282 (push-fop-table (find-undeleted-package-or-lose package-name
))))
284 ;;;; fops for loading numbers
286 ;;; Load a signed integer LENGTH bytes long from *FASL-INPUT-STREAM*.
287 (defun load-s-integer (length)
288 (declare (fixnum length
))
289 ;; #+cmu (declare (optimize (inhibit-warnings 2)))
290 (do* ((index length
(1- index
))
291 (byte 0 (read-byte *fasl-input-stream
*))
292 (result 0 (+ result
(ash byte bits
)))
295 (if (logbitp 7 byte
) ; look at sign bit
296 (- result
(ash 1 bits
))
298 (declare (fixnum index byte bits
))))
300 (define-cloned-fops (fop-integer 33) (fop-small-integer 34)
301 (load-s-integer (clone-arg)))
303 (define-fop (fop-word-integer 35)
304 (prepare-for-fast-read-byte *fasl-input-stream
*
306 (fast-read-s-integer #.sb
!vm
:n-word-bytes
)
307 (done-with-fast-read-byte))))
309 (define-fop (fop-byte-integer 36)
310 (prepare-for-fast-read-byte *fasl-input-stream
*
312 (fast-read-s-integer 1)
313 (done-with-fast-read-byte))))
315 (define-fop (fop-ratio 70)
316 (let ((den (pop-stack)))
317 (%make-ratio
(pop-stack) den
)))
319 (define-fop (fop-complex 71)
320 (let ((im (pop-stack)))
321 (%make-complex
(pop-stack) im
)))
323 (macrolet ((fast-read-single-float ()
324 '(make-single-float (fast-read-s-integer 4)))
325 (fast-read-double-float ()
326 '(let ((lo (fast-read-u-integer 4)))
327 (make-double-float (fast-read-s-integer 4) lo
))))
328 (macrolet ((define-complex-fop (name fop-code type
)
329 (let ((reader (symbolicate "FAST-READ-" type
)))
330 `(define-fop (,name
,fop-code
)
331 (prepare-for-fast-read-byte *fasl-input-stream
*
333 (complex (,reader
) (,reader
))
334 (done-with-fast-read-byte))))))
335 (define-float-fop (name fop-code type
)
336 (let ((reader (symbolicate "FAST-READ-" type
)))
337 `(define-fop (,name
,fop-code
)
338 (prepare-for-fast-read-byte *fasl-input-stream
*
341 (done-with-fast-read-byte)))))))
342 (define-complex-fop fop-complex-single-float
72 single-float
)
343 (define-complex-fop fop-complex-double-float
73 double-float
)
345 (define-complex-fop fop-complex-long-float
67 long-float
)
346 (define-float-fop fop-single-float
46 single-float
)
347 (define-float-fop fop-double-float
47 double-float
)
349 (define-float-fop fop-long-float
52 long-float
)))
354 (define-fop (fop-list 15)
355 (do ((res () (cons (pop-stack) res
))
356 (n (read-byte-arg) (1- n
)))
358 (declare (type index n
))))
360 (define-fop (fop-list* 16)
361 (do ((res (pop-stack) (cons (pop-stack) res
))
362 (n (read-byte-arg) (1- n
)))
364 (declare (type index n
))))
366 (macrolet ((frob (name op fun n
)
367 `(define-fop (,name
,op
)
368 (call-with-popped-args ,fun
,n
))))
370 (frob fop-list-1
17 list
1)
371 (frob fop-list-2
18 list
2)
372 (frob fop-list-3
19 list
3)
373 (frob fop-list-4
20 list
4)
374 (frob fop-list-5
21 list
5)
375 (frob fop-list-6
22 list
6)
376 (frob fop-list-7
23 list
7)
377 (frob fop-list-8
24 list
8)
379 (frob fop-list
*-
1 25 list
* 2)
380 (frob fop-list
*-
2 26 list
* 3)
381 (frob fop-list
*-
3 27 list
* 4)
382 (frob fop-list
*-
4 28 list
* 5)
383 (frob fop-list
*-
5 29 list
* 6)
384 (frob fop-list
*-
6 30 list
* 7)
385 (frob fop-list
*-
7 31 list
* 8)
386 (frob fop-list
*-
8 32 list
* 9))
388 ;;;; fops for loading arrays
390 (define-cloned-fops (fop-base-string 37) (fop-small-base-string 38)
391 (let* ((arg (clone-arg))
392 (res (make-string arg
:element-type
'base-char
)))
393 (read-string-as-bytes *fasl-input-stream
* res
)
399 (define-cloned-fops (fop-character-string 161) (fop-small-character-string 162)
400 (bug "CHARACTER-STRING FOP encountered"))
403 (define-cloned-fops (fop-character-string 161) (fop-small-character-string 162)
404 (let* ((arg (clone-arg))
405 (res (make-string arg
)))
406 (read-string-as-unsigned-byte-32 *fasl-input-stream
* res
)
409 (define-cloned-fops (fop-vector 39) (fop-small-vector 40)
410 (let* ((size (clone-arg))
411 (res (make-array size
)))
412 (declare (fixnum size
))
413 (do ((n (1- size
) (1- n
)))
415 (setf (svref res n
) (pop-stack)))
418 (define-fop (fop-array 83)
419 (let* ((rank (read-word-arg))
421 (length (length vec
))
422 (res (make-array-header sb
!vm
:simple-array-widetag rank
)))
423 (declare (simple-array vec
)
424 (type (unsigned-byte #.
(- sb
!vm
:n-word-bits sb
!vm
:n-widetag-bits
)) rank
))
425 (set-array-header res vec length nil
0
427 (dimensions () (cons (pop-stack) dimensions
)))
428 ((zerop i
) dimensions
)
429 (declare (type index i
)))
434 (define-fop (fop-single-float-vector 84)
435 (let* ((length (read-word-arg))
436 (result (make-array length
:element-type
'single-float
)))
437 (read-n-bytes *fasl-input-stream
* result
0 (* length
4))
440 (define-fop (fop-double-float-vector 85)
441 (let* ((length (read-word-arg))
442 (result (make-array length
:element-type
'double-float
)))
443 (read-n-bytes *fasl-input-stream
* result
0 (* length
8))
446 (define-fop (fop-complex-single-float-vector 86)
447 (let* ((length (read-word-arg))
448 (result (make-array length
:element-type
'(complex single-float
))))
449 (read-n-bytes *fasl-input-stream
* result
0 (* length
8))
452 (define-fop (fop-complex-double-float-vector 87)
453 (let* ((length (read-word-arg))
454 (result (make-array length
:element-type
'(complex double-float
))))
455 (read-n-bytes *fasl-input-stream
* result
0 (* length
16))
459 ;;; *** NOT *** the FOP-INT-VECTOR as currently documented in rtguts.
460 ;;; Size must be a directly supported I-vector element size, with no
461 ;;; extra bits. This must be packed according to the local
462 ;;; byte-ordering, allowing us to directly read the bits.
463 (define-fop (fop-int-vector 43)
464 (prepare-for-fast-read-byte *fasl-input-stream
*
465 (let* ((len (fast-read-u-integer #.sb
!vm
:n-word-bytes
))
466 (size (fast-read-byte))
468 (0 (make-array len
:element-type
'nil
))
469 (1 (make-array len
:element-type
'bit
))
470 (2 (make-array len
:element-type
'(unsigned-byte 2)))
471 (4 (make-array len
:element-type
'(unsigned-byte 4)))
472 (7 (prog1 (make-array len
:element-type
'(unsigned-byte 7))
474 (8 (make-array len
:element-type
'(unsigned-byte 8)))
475 (15 (prog1 (make-array len
:element-type
'(unsigned-byte 15))
477 (16 (make-array len
:element-type
'(unsigned-byte 16)))
478 (31 (prog1 (make-array len
:element-type
'(unsigned-byte 31))
480 (32 (make-array len
:element-type
'(unsigned-byte 32)))
481 #!+#.
(cl:if
(cl:= 64 sb
!vm
:n-word-bits
) '(and) '(or))
482 (63 (prog1 (make-array len
:element-type
'(unsigned-byte 63))
484 (64 (make-array len
:element-type
'(unsigned-byte 64)))
485 (t (bug "losing i-vector element size: ~S" size
)))))
486 (declare (type index len
))
487 (done-with-fast-read-byte)
488 (read-n-bytes *fasl-input-stream
*
491 (ceiling (the index
(* size len
)) sb
!vm
:n-byte-bits
))
494 ;;; This is the same as FOP-INT-VECTOR, except this is for signed
496 (define-fop (fop-signed-int-vector 50)
497 (prepare-for-fast-read-byte *fasl-input-stream
*
498 (let* ((len (fast-read-u-integer #.sb
!vm
:n-word-bytes
))
499 (size (fast-read-byte))
501 (8 (make-array len
:element-type
'(signed-byte 8)))
502 (16 (make-array len
:element-type
'(signed-byte 16)))
503 #!+#.
(cl:if
(cl:= 32 sb
!vm
:n-word-bits
) '(and) '(or))
504 (29 (prog1 (make-array len
:element-type
'(unsigned-byte 29))
506 #!+#.
(cl:if
(cl:= 32 sb
!vm
:n-word-bits
) '(and) '(or))
507 (30 (prog1 (make-array len
:element-type
'(signed-byte 30))
509 (32 (make-array len
:element-type
'(signed-byte 32)))
510 #!+#.
(cl:if
(cl:= 64 sb
!vm
:n-word-bits
) '(and) '(or))
511 (60 (prog1 (make-array len
:element-type
'(unsigned-byte 60))
513 #!+#.
(cl:if
(cl:= 64 sb
!vm
:n-word-bits
) '(and) '(or))
514 (61 (prog1 (make-array len
:element-type
'(signed-byte 61))
516 #!+#.
(cl:if
(cl:= 64 sb
!vm
:n-word-bits
) '(and) '(or))
517 (64 (make-array len
:element-type
'(signed-byte 64)))
518 (t (bug "losing si-vector element size: ~S" size
)))))
519 (declare (type index len
))
520 (done-with-fast-read-byte)
521 (read-n-bytes *fasl-input-stream
*
524 (ceiling (the index
(* size len
)) sb
!vm
:n-byte-bits
))
527 (define-fop (fop-eval 53)
530 (let ((result (eval (pop-stack))))
531 ;; FIXME: CMU CL had this code here:
532 ;; (when *load-print*
536 ;; Unfortunately, this dependence on the *LOAD-PRINT* global
537 ;; variable is non-ANSI, so for now we've just punted printing in
541 (define-fop (fop-eval-for-effect 54 :pushp nil
)
544 (let ((result (eval (pop-stack))))
545 ;; FIXME: See the comment about *LOAD-PRINT* in FOP-EVAL.
546 (declare (ignore result
))
547 #+nil
(when *load-print
*
552 (define-fop (fop-funcall 55)
553 (let ((arg (read-byte-arg)))
555 (dotimes (i (1+ arg
))
558 (funcall (pop-stack))
559 (do ((args () (cons (pop-stack) args
))
561 ((zerop n
) (apply (pop-stack) args
))
562 (declare (type index n
)))))))
564 (define-fop (fop-funcall-for-effect 56 :pushp nil
)
565 (let ((arg (read-byte-arg)))
567 (dotimes (i (1+ arg
))
570 (funcall (pop-stack))
571 (do ((args () (cons (pop-stack) args
))
573 ((zerop n
) (apply (pop-stack) args
))
574 (declare (type index n
)))))))
576 ;;;; fops for fixing up circularities
578 (define-fop (fop-rplaca 200 :pushp nil
)
579 (let ((obj (svref *current-fop-table
* (read-word-arg)))
580 (idx (read-word-arg))
582 (setf (car (nthcdr idx obj
)) val
)))
584 (define-fop (fop-rplacd 201 :pushp nil
)
585 (let ((obj (svref *current-fop-table
* (read-word-arg)))
586 (idx (read-word-arg))
588 (setf (cdr (nthcdr idx obj
)) val
)))
590 (define-fop (fop-svset 202 :pushp nil
)
591 (let* ((obi (read-word-arg))
592 (obj (svref *current-fop-table
* obi
))
593 (idx (read-word-arg))
596 (setf (%instance-ref obj idx
) val
)
597 (setf (svref obj idx
) val
))))
599 (define-fop (fop-structset 204 :pushp nil
)
600 (setf (%instance-ref
(svref *current-fop-table
* (read-word-arg))
604 ;;; In the original CMUCL code, this actually explicitly declared PUSHP
605 ;;; to be T, even though that's what it defaults to in DEFINE-FOP.
606 (define-fop (fop-nthcdr 203)
607 (nthcdr (read-word-arg) (pop-stack)))
609 ;;;; fops for loading functions
611 ;;; (In CMU CL there was a FOP-CODE-FORMAT (47) which was
612 ;;; conventionally placed at the beginning of each fasl file to test
613 ;;; for compatibility between the fasl file and the CMU CL which
614 ;;; loaded it. In SBCL, this functionality has been replaced by
615 ;;; putting the implementation and version in required fields in the
616 ;;; fasl file header.)
618 (define-fop (fop-code 58 :stackp nil
)
619 (load-code (read-word-arg) (read-word-arg)))
621 (define-fop (fop-small-code 59 :stackp nil
)
622 (load-code (read-byte-arg) (read-halfword-arg)))
624 (define-fop (fop-fdefinition 60)
625 (fdefinition-object (pop-stack) t
))
627 (define-fop (fop-sanctify-for-execution 61)
628 (let ((component (pop-stack)))
629 (sb!vm
:sanctify-for-execution component
)
632 (define-fop (fop-fset 74 :pushp nil
)
633 ;; Ordinary, not-for-cold-load code shouldn't need to mess with this
634 ;; at all, since it's only used as part of the conspiracy between
635 ;; the cross-compiler and GENESIS to statically link FDEFINITIONs
637 (warn "~@<FOP-FSET seen in ordinary load (not cold load) -- quite strange! ~
638 If you didn't do something strange to cause this, please report it as a ~
640 ;; Unlike CMU CL, we don't treat this as a no-op in ordinary code.
641 ;; If the user (or, more likely, developer) is trying to reload
642 ;; compiled-for-cold-load code into a warm SBCL, we'll do a warm
643 ;; assignment. (This is partly for abstract tidiness, since the warm
644 ;; assignment is the closest analogy to what happens at cold load,
645 ;; and partly because otherwise our compiled-for-cold-load code will
646 ;; fail, since in SBCL things like compiled-for-cold-load %DEFUN
647 ;; depend more strongly than in CMU CL on FOP-FSET actually doing
649 (let ((fn (pop-stack))
651 (setf (fdefinition name
) fn
)))
653 (define-fop (fop-note-debug-source 174 :pushp nil
)
654 (warn "~@<FOP-NOTE-DEBUG-SOURCE seen in ordinary load (not cold load) -- ~
655 very strange! If you didn't do something to cause this, please report it as ~
657 ;; as with COLD-FSET above, we are going to be lenient with coming
658 ;; across this fop in a warm SBCL.
659 (let ((debug-source (pop-stack)))
660 (setf (sb!c
::debug-source-compiled debug-source
) (get-universal-time)
661 (sb!c
::debug-source-created debug-source
)
662 (file-write-date (sb!c
::debug-source-namestring debug-source
)))))
664 ;;; Modify a slot in a CONSTANTS object.
665 (define-cloned-fops (fop-alter-code 140 :pushp nil
) (fop-byte-alter-code 141)
666 (let ((value (pop-stack))
668 (setf (code-header-ref code
(clone-arg)) value
)
671 (define-fop (fop-fun-entry 142)
672 #+sb-xc-host
; since xc host doesn't know how to compile %PRIMITIVE
673 (error "FOP-FUN-ENTRY can't be defined without %PRIMITIVE.")
675 (let ((info (pop-stack))
677 (arglist (pop-stack))
679 (code-object (pop-stack))
680 (offset (read-word-arg)))
681 (declare (type index offset
))
682 (unless (zerop (logand offset sb
!vm
:lowtag-mask
))
683 (bug "unaligned function object, offset = #X~X" offset
))
684 (let ((fun (%primitive sb
!c
:compute-fun code-object offset
)))
685 (setf (%simple-fun-self fun
) fun
)
686 (setf (%simple-fun-next fun
) (%code-entry-points code-object
))
687 (setf (%code-entry-points code-object
) fun
)
688 (setf (%simple-fun-name fun
) name
)
689 (setf (%simple-fun-arglist fun
) arglist
)
690 (setf (%simple-fun-type fun
) type
)
691 (setf (%simple-fun-info fun
) info
)
692 ;; FIXME: See the comment about *LOAD-PRINT* in FOP-EVAL.
693 #+nil
(when *load-print
*
695 (format t
"~S defined~%" fun
))
698 ;;;; Some Dylan FOPs used to live here. By 1 November 1998 the code
699 ;;;; was sufficiently stale that the functions it called were no
700 ;;;; longer defined, so I (William Harold Newman) deleted it.
702 ;;;; In case someone in the future is trying to make sense of FOP layout,
703 ;;;; it might be worth recording that the Dylan FOPs were
704 ;;;; 100 FOP-DYLAN-SYMBOL-SAVE
705 ;;;; 101 FOP-SMALL-DYLAN-SYMBOL-SAVE
706 ;;;; 102 FOP-DYLAN-KEYWORD-SAVE
707 ;;;; 103 FOP-SMALL-DYLAN-KEYWORD-SAVE
708 ;;;; 104 FOP-DYLAN-VARINFO-VALUE
710 ;;;; assemblerish fops
712 (define-fop (fop-assembler-code 144)
713 (error "cannot load assembler code except at cold load"))
715 (define-fop (fop-assembler-routine 145)
716 (error "cannot load assembler code except at cold load"))
718 (define-fop (fop-foreign-fixup 147)
719 (let* ((kind (pop-stack))
720 (code-object (pop-stack))
721 (len (read-byte-arg))
722 (sym (make-string len
:element-type
'base-char
)))
723 (read-n-bytes *fasl-input-stream
* sym
0 len
)
724 (sb!vm
:fixup-code-object code-object
726 (foreign-symbol-address sym
)
730 (define-fop (fop-assembler-fixup 148)
731 (let ((routine (pop-stack))
733 (code-object (pop-stack)))
734 (multiple-value-bind (value found
) (gethash routine
*assembler-routines
*)
736 (error "undefined assembler routine: ~S" routine
))
737 (sb!vm
:fixup-code-object code-object
(read-word-arg) value kind
))
740 (define-fop (fop-code-object-fixup 149)
741 (let ((kind (pop-stack))
742 (code-object (pop-stack)))
743 ;; Note: We don't have to worry about GC moving the code-object after
744 ;; the GET-LISP-OBJ-ADDRESS and before that value is deposited, because
745 ;; we can only use code-object fixups when code-objects don't move.
746 (sb!vm
:fixup-code-object code-object
(read-word-arg)
747 (get-lisp-obj-address code-object
) kind
)
751 (define-fop (fop-foreign-dataref-fixup 150)
752 (let* ((kind (pop-stack))
753 (code-object (pop-stack))
754 (len (read-byte-arg))
755 (sym (make-string len
:element-type
'base-char
)))
756 (read-n-bytes *fasl-input-stream
* sym
0 len
)
757 (sb!vm
:fixup-code-object code-object
759 (foreign-symbol-address sym t
)
763 ;;; FOPs needed for implementing an IF operator in a FASL
765 ;;; Skip until a FOP-MAYBE-STOP-SKIPPING with the same POSITION is
766 ;;; executed. While skipping, we execute most FOPs normally, except
767 ;;; for ones that a) funcall/eval b) start skipping. This needs to
768 ;;; be done to ensure that the fop table gets populated correctly
769 ;;; regardless of the execution path.
770 (define-fop (fop-skip 151 :pushp nil
)
771 (let ((position (pop-stack)))
773 (setf *skip-until
* position
)))
776 ;;; As before, but only start skipping if the top of the FOP stack is NIL.
777 (define-fop (fop-skip-if-false 152 :pushp nil
)
778 (let ((condition (pop-stack))
779 (position (pop-stack)))
780 (unless (or condition
782 (setf *skip-until
* position
)))
785 ;;; If skipping, pop the top of the stack and discard it. Needed for
786 ;;; ensuring that the stack stays balanced when skipping.
787 (define-fop (fop-drop-if-skipping 153 :pushp nil
)
792 ;;; If skipping, push a dummy value on the stack. Needed for
793 ;;; ensuring that the stack stays balanced when skipping.
794 (define-fop (fop-push-nil-if-skipping 154 :pushp nil
)
799 ;;; Stop skipping if the top of the stack matches *SKIP-UNTIL*
800 (define-fop (fop-maybe-stop-skipping 155 :pushp nil
)
801 (let ((label (pop-stack)))
802 (when (eql *skip-until
* label
)
803 (setf *skip-until
* nil
)))