5 ;;; Bind STACK-VAR and PTR-VAR to the start of a subsequence of
6 ;;; the fop stack of length COUNT, then execute BODY.
7 ;;; Within the body, FOP-STACK-REF is used in lieu of SVREF
8 ;;; to elide bounds checking.
9 (defmacro with-fop-stack
(((stack-var &optional stack-expr
) ptr-var count
)
11 `(macrolet ((fop-stack-ref (i)
14 (declare (optimize (sb!c
::insert-array-bounds-checks
0)))
15 (svref ,',stack-var
(truly-the index
,i
)))))
16 (let* (,@(when stack-expr
17 (list `(,stack-var
(the simple-vector
,stack-expr
))))
18 (,ptr-var
(truly-the index
(fop-stack-pop-n ,stack-var
,count
))))
21 ;;; Define NAME as a fasl operation, with op-code FOP-CODE.
22 ;;; PUSHP describes what the body does to the fop stack:
23 ;;; T - The result of the body is pushed on the fop stack.
24 ;;; NIL - The result of the body is discarded.
25 ;;; In either case, the body is permitted to pop the stack.
27 (defmacro !define-fop
(fop-code &rest stuff
)
28 (multiple-value-bind (name allowp operands stack-args pushp forms
)
29 (let ((allowp (if (eq (car stuff
) :not-host
)
30 (progn (pop stuff
) (or #+sb-xc t
))
32 (destructuring-bind ((name &optional arglist
(pushp t
)) . forms
) stuff
33 (aver (member pushp
'(nil t
)))
34 (multiple-value-bind (operands stack-args
)
35 (if (atom (car arglist
))
38 (:operands
(values (cdar arglist
) (cdr arglist
)))))
39 (assert (<= (length operands
) 3))
40 (values name allowp operands stack-args pushp forms
))))
42 (defun ,name
(.fasl-input.
,@operands
)
43 (declare (ignorable .fasl-input.
))
46 ((fasl-input () '(truly-the fasl-input .fasl-input.
))
47 (fasl-input-stream () '(%fasl-input-stream
(fasl-input)))
48 (operand-stack () '(%fasl-input-stack
(fasl-input)))
49 (skip-until () '(%fasl-input-skip-until
(fasl-input))))
50 ,@(if (null stack-args
)
52 (with-unique-names (stack ptr
)
53 `((with-fop-stack ((,stack
(operand-stack))
54 ,ptr
,(length stack-args
))
55 (multiple-value-bind ,stack-args
56 (values ,@(loop for i below
(length stack-args
)
57 collect
`(fop-stack-ref (+ ,ptr
,i
))))
59 `((declare (ignore ,@operands
))
60 (error ,(format nil
"Not-host fop invoked: ~A" name
)))))
61 (!%define-fop
',name
,fop-code
,(length operands
) ,(if pushp
1 0)))))
63 (defun !%define-fop
(name base-opcode n-operands pushp
)
64 (declare (type (mod 4) n-operands
))
65 ;; If at least one non-stack operand is present, the same fop function
66 ;; appears in 4 consecutive cells in the fop table, with the low 2 bits
67 ;; of the fopcode determining the number of additional bytes to read
68 ;; for the first operand. The second and third operands are varint-encoded.
69 (let ((n-slots (if (plusp n-operands
) 4 1)))
70 (unless (zerop (mod base-opcode n-slots
))
71 (error "Opcode for fop ~S must be a multiple of ~D" name n-slots
))
72 (loop for opcode from base-opcode below
(+ base-opcode n-slots
)
73 for function
= (svref **fop-funs
** opcode
)
74 when
(functionp function
)
75 do
(let ((oname (nth-value 2 (function-lambda-expression function
))))
76 (when (and oname
(not (eq oname name
)))
77 (error "fop ~S with opcode ~D conflicts with fop ~S."
79 (let ((existing-opcode (get name
'opcode
)))
80 (when (and existing-opcode
(/= existing-opcode base-opcode
))
81 (error "multiple codes for fop name ~S: ~D and ~D"
82 name base-opcode existing-opcode
)))
83 (setf (get name
'opcode
) base-opcode
)
84 ;; The low 2 bits of the opcode comprise the length modifier if there is
85 ;; at least one non-stack integer operand.
86 ;; If there is more than 1, they follow, using varint encoding.
88 (let ((opcode (+ base-opcode j
)))
89 (setf (svref **fop-funs
** opcode
) (symbol-function name
)
90 (aref (car **fop-signatures
**) opcode
) n-operands
91 (sbit (cdr **fop-signatures
**) opcode
) pushp
))))
94 ;;; a helper function for reading string values from FASL files: sort
95 ;;; of like READ-SEQUENCE specialized for files of (UNSIGNED-BYTE 8),
96 ;;; with an automatic conversion from (UNSIGNED-BYTE 8) into CHARACTER
97 ;;; for each element read
98 (defun read-string-as-bytes (stream string
&optional
(length (length string
)))
99 (declare (type (simple-array character
(*)) string
)
102 (with-fast-read-byte ((unsigned-byte 8) stream
)
104 (setf (aref string i
)
105 (sb!xc
:code-char
(fast-read-byte)))))
107 (defun read-base-string-as-bytes (stream string
&optional
(length (length string
)))
108 (declare (type (simple-array base-char
(*)) string
)
111 (with-fast-read-byte ((unsigned-byte 8) stream
)
113 (setf (aref string i
)
114 (sb!xc
:code-char
(fast-read-byte)))))
116 #!+(and sb-unicode
(host-feature sb-xc
))
117 (defun read-string-as-unsigned-byte-32
118 (stream string
&optional
(length (length string
)))
119 (declare (type (simple-array character
(*)) string
)
122 (with-fast-read-byte ((unsigned-byte 8) stream
)
124 (setf (aref string i
)
125 (sb!xc
:code-char
(fast-read-u-integer 4)))))
128 ;;;; miscellaneous fops
130 ;;; Setting this variable causes execution of a FOP-NOP4 to produce
131 ;;; output to *DEBUG-IO*. This can be handy when trying to follow the
132 ;;; progress of FASL loading.
134 (defvar *show-fop-nop4-p
* nil
)
136 ;;; CMU CL had a single no-op fop, FOP-NOP, with fop code 0. Since 0
137 ;;; occurs disproportionately often in fasl files for other reasons,
138 ;;; FOP-NOP is less than ideal for writing human-readable patterns
139 ;;; into fasl files for debugging purposes. There's no shortage of
140 ;;; unused fop codes, so we add this second NOP, which reads 4
141 ;;; arbitrary bytes and discards them.
142 (!define-fop
137 (fop-nop4 () nil
)
143 (let ((arg (read-arg 4 (fasl-input-stream))))
144 (declare (ignorable arg
))
146 (when *show-fop-nop4-p
*
147 (format *debug-io
* "~&/FOP-NOP4 ARG=~W=#X~X~%" arg arg
))))
149 (!define-fop
0 (fop-nop () nil
))
150 (!define-fop
1 (fop-pop (x) nil
) (push-fop-table x
(fasl-input)))
151 (!define-fop
2 (fop-empty-list) nil
)
152 (!define-fop
3 (fop-truth) t
)
153 (!define-fop
4 (fop-push ((:operands index
)))
154 (ref-fop-table (fasl-input) index
))
155 (!define-fop
9 (fop-move-to-table (x))
156 (push-fop-table x
(fasl-input))
159 (!define-fop
66 :not-host
(fop-misc-trap)
160 (make-unbound-marker))
162 (!define-fop
76 (fop-character ((:operands char-code
)))
163 (code-char char-code
))
165 ;; %MAKE-INSTANCE does not exist on the host.
166 (!define-fop
48 :not-host
(fop-struct ((:operands size
) layout
))
167 (let ((res (%make-instance size
)) ; number of words excluding header
168 ;; Discount the layout from number of user-visible words.
169 (n-data-words (- size sb
!vm
:instance-data-start
)))
170 (setf (%instance-layout res
) layout
)
171 (with-fop-stack ((stack (operand-stack)) ptr n-data-words
)
172 (declare (type index ptr
))
173 (let ((bitmap (layout-bitmap layout
)))
174 ;; Values on the stack are in the same order as in the structure itself.
175 (do ((i sb
!vm
:instance-data-start
(1+ i
)))
177 (declare (type index i
))
178 (let ((val (fop-stack-ref ptr
)))
179 (if (logbitp i bitmap
)
180 (setf (%instance-ref res i
) val
)
181 (setf (%raw-instance-ref
/word res i
) val
))
185 (!define-fop
45 :not-host
(fop-layout (name inherits depthoid length bitmap
))
187 (case (and (>= (length (the simple-vector inherits
)) 2)
189 (#.
(find-layout 'structure-object
) +structure-layout-flag
+)
190 (#.
(find-layout 'condition
) +condition-layout-flag
+)
191 ;; DUMP-LAYOUT avers that +pcl-object-flag+ layouts are never dumped
193 (find-and-init-or-check-layout name length flags inherits depthoid bitmap
)))
195 ;; Allocate a CLOS object. This is used when the compiler detects that
196 ;; MAKE-LOAD-FORM returned a simple use of MAKE-LOAD-FORM-SAVING-SLOTS,
197 ;; or possibly a hand-written equivalent (however unlikely).
198 (!define-fop
68 :not-host
(fop-allocate-instance (name) nil
)
199 (let ((instance (allocate-instance (find-class (the symbol name
)))))
200 (push-fop-table instance
(fasl-input))))
202 ;; Fill in object slots as dictated by the second return value from
203 ;; MAKE-LOAD-FORM-SAVING-SLOTS.
204 ;; This wants a 'count' as the first item in the SLOT-NAMES argument
205 ;; rather than using read-arg because many calls of this might share
206 ;; the list, which must be constructed into the fop-table no matter what.
207 (!define-fop
69 :not-host
(fop-set-slot-values (slot-names obj
) nil
)
208 (let* ((n-slots (pop slot-names
))
209 (stack (operand-stack))
210 (ptr (fop-stack-pop-n stack n-slots
)))
212 (let ((val (svref stack
(+ ptr i
)))
213 (slot-name (pop slot-names
)))
214 (if (unbound-marker-p val
)
215 ;; SLOT-MAKUNBOUND-USING-CLASS might do something nonstandard.
216 (slot-makunbound obj slot-name
)
217 (setf (slot-value obj slot-name
) val
))))))
219 (!define-fop
64 (fop-end-group () nil
)
220 (/show0
"THROWing FASL-GROUP-END")
221 (throw 'fasl-group-end t
))
223 ;;; We used to have FOP-NORMAL-LOAD as 81 and FOP-MAYBE-COLD-LOAD as
224 ;;; 82 until GENESIS learned how to work with host symbols and
225 ;;; packages directly instead of piggybacking on the host code.
227 (!define-fop
62 (fop-verify-table-size () nil
)
228 (let ((expected-index (read-word-arg (fasl-input-stream))))
229 (unless (= (svref (%fasl-input-table
(fasl-input)) 0) expected-index
)
230 (bug "fasl table of improper size"))))
231 (!define-fop
63 (fop-verify-empty-stack () nil
)
232 (unless (fop-stack-empty-p (operand-stack))
233 (bug "fasl stack not empty when it should be")))
235 ;;;; fops for loading symbols
237 (defstruct (undefined-package (:copier nil
))
238 (error nil
:read-only t
))
239 (declaim (freeze-type undefined-package
))
241 ;; Cold load has its own implementation of all symbol fops,
242 ;; but we have to execute define-fop now to assign their numbers.
243 (labels #+sb-xc-host
()
245 ((read-symbol-name (length+flag fasl-input
)
246 (let* ((namelen (ash (the fixnum length
+flag
) -
1))
247 (base-p (logand length
+flag
1))
248 (elt-type (if (eql base-p
1) 'base-char
'character
))
249 (buffer (%fasl-input-name-buffer fasl-input
))
250 (string (the string
(svref buffer base-p
))))
251 (when (< (length string
) namelen
) ; grow
252 (setf string
(make-string namelen
:element-type elt-type
)
253 (svref buffer base-p
) string
))
254 (funcall (if (eql base-p
1)
255 'read-base-string-as-bytes
256 'read-string-as-unsigned-byte-32
)
257 (%fasl-input-stream fasl-input
) string namelen
)
258 (values string namelen elt-type
)))
259 (aux-fop-intern (length+flag package fasl-input
)
260 (multiple-value-bind (name length elt-type
)
261 (read-symbol-name length
+flag fasl-input
)
262 (if (undefined-package-p package
)
263 (error 'simple-package-error
264 :format-control
"Error finding package for symbol ~s:~% ~a"
266 (list (subseq name
0 length
)
267 (undefined-package-error package
)))
268 (push-fop-table (without-package-locks
269 (%intern name length package elt-type
))
271 ;; Symbol-hash is usually computed lazily and memoized into a symbol.
272 ;; Laziness slightly improves the speed of allocation.
273 ;; But when loading fasls, the time spent in the loader totally swamps
274 ;; any time savings of not precomputing symbol-hash.
275 ;; INTERN hashes everything anyway, so let's be consistent
276 ;; and precompute the hashes of uninterned symbols too.
277 (ensure-hashed (symbol)
278 (ensure-symbol-hash symbol
)
281 #-sb-xc-host
(declare (inline ensure-hashed
))
282 (!define-fop
80 :not-host
(fop-lisp-symbol-save ((:operands length
+flag
)))
283 (aux-fop-intern length
+flag
*cl-package
* (fasl-input)))
284 (!define-fop
84 :not-host
(fop-keyword-symbol-save ((:operands length
+flag
)))
285 (aux-fop-intern length
+flag
*keyword-package
* (fasl-input)))
286 (!define-fop
#xF0
:not-host
(fop-symbol-in-package-save ((:operands length
+flag pkg-index
)))
287 (aux-fop-intern length
+flag
(ref-fop-table (fasl-input) pkg-index
) (fasl-input)))
289 (!define-fop
96 :not-host
(fop-uninterned-symbol-save ((:operands length
+flag
)))
290 (multiple-value-bind (name len
) (read-symbol-name length
+flag
(fasl-input))
291 (push-fop-table (ensure-hashed (make-symbol (subseq name
0 len
)))
294 (!define-fop
104 :not-host
(fop-copy-symbol-save ((:operands table-index
)))
295 (push-fop-table (ensure-hashed
296 (copy-symbol (ref-fop-table (fasl-input) table-index
)))
299 (!define-fop
44 (fop-package (pkg-designator))
300 (find-undeleted-package-or-lose pkg-designator
))
302 (!define-fop
156 :not-host
(fop-named-package-save ((:operands length
)) nil
)
303 (let ((package-name (make-string length
)))
304 #!-sb-unicode
(read-string-as-bytes (fasl-input-stream) package-name
)
305 #!+sb-unicode
(read-string-as-unsigned-byte-32 (fasl-input-stream) package-name
)
307 (handler-case (find-undeleted-package-or-lose package-name
)
308 (simple-package-error (c)
309 (make-undefined-package :error
(princ-to-string c
))))
312 ;;;; fops for loading numbers
314 ;;; Load a signed integer LENGTH bytes long from FASL-INPUT-STREAM.
315 (defun load-s-integer (length fasl-input-stream
)
316 (declare (fixnum length
)
318 (with-fast-read-byte ((unsigned-byte 8) fasl-input-stream
)
319 (do* ((index length
(1- index
))
320 (byte 0 (fast-read-byte))
321 (result 0 (+ result
(ash byte bits
)))
324 (if (logbitp 7 byte
) ; look at sign bit
325 (- result
(ash 1 bits
))
327 (declare (fixnum index byte bits
)))))
329 (!define-fop
36 (fop-integer ((:operands n-bytes
)))
330 (load-s-integer n-bytes
(fasl-input-stream)))
332 (!define-fop
34 (fop-word-integer)
333 (with-fast-read-byte ((unsigned-byte 8) (fasl-input-stream))
334 (fast-read-s-integer #.sb
!vm
:n-word-bytes
)))
336 (!define-fop
35 (fop-byte-integer)
337 ;; FIXME: WITH-FAST-READ-BYTE for exactly 1 byte is not really faster/better
338 ;; than regular READ-BYTE. The expansion of READ-ARG corroborates this claim.
339 (with-fast-read-byte ((unsigned-byte 8) (fasl-input-stream))
340 (fast-read-s-integer 1)))
342 ;; No %MAKE-RATIO on host
343 (!define-fop
70 :not-host
(fop-ratio (num den
)) (%make-ratio num den
))
345 ;; No %MAKE-COMPLEX on host
346 (!define-fop
71 :not-host
(fop-complex (realpart imagpart
))
347 (%make-complex realpart imagpart
))
349 (macrolet ((fast-read-single-float ()
350 '(make-single-float (fast-read-s-integer 4)))
351 (fast-read-double-float ()
352 '(let ((lo (fast-read-u-integer 4)))
353 (make-double-float (fast-read-s-integer 4) lo
))))
354 (macrolet ((define-complex-fop (opcode name type
)
355 (let ((reader (symbolicate "FAST-READ-" type
)))
356 `(!define-fop
,opcode
(,name
)
357 (with-fast-read-byte ((unsigned-byte 8) (fasl-input-stream))
358 (complex (,reader
) (,reader
))))))
359 (define-float-fop (opcode name type
)
360 (let ((reader (symbolicate "FAST-READ-" type
)))
361 `(!define-fop
,opcode
(,name
)
362 (with-fast-read-byte ((unsigned-byte 8) (fasl-input-stream))
364 (define-complex-fop 72 fop-complex-single-float single-float
)
365 (define-complex-fop 73 fop-complex-double-float double-float
)
367 (define-complex-fop 67 fop-complex-long-float long-float
)
368 (define-float-fop 46 fop-single-float single-float
)
369 (define-float-fop 47 fop-double-float double-float
)
371 (define-float-fop 52 fop-long-float long-float
)))
374 (!define-fop
88 :not-host
(fop-simd-pack)
375 (with-fast-read-byte ((unsigned-byte 8) (fasl-input-stream))
376 (%make-simd-pack
(fast-read-s-integer 8)
377 (fast-read-u-integer 8)
378 (fast-read-u-integer 8))))
382 (defun fop-list-from-stack (stack n
)
383 ;; N is 0-255 when called from FOP-LIST,
384 ;; but it is as large as ARRAY-RANK-LIMIT in FOP-ARRAY.
385 (declare (type (unsigned-byte 16) n
)
386 (optimize (speed 3)))
387 (with-fop-stack ((stack) ptr n
)
388 (do* ((i (+ ptr n
) (1- i
))
389 (res () (cons (fop-stack-ref i
) res
)))
391 (declare (type index i
)))))
393 (!define-fop
33 (fop-list)
394 (fop-list-from-stack (operand-stack) (read-byte-arg (fasl-input-stream))))
395 (!define-fop
16 (fop-list*)
396 ;; N is the number of cons cells (0 is ok)
397 (let ((n (read-byte-arg (fasl-input-stream))))
398 (with-fop-stack ((stack (operand-stack)) ptr
(1+ n
))
399 (do* ((i (+ ptr n
) (1- i
))
400 (res (fop-stack-ref (+ ptr n
))
401 (cons (fop-stack-ref i
) res
)))
403 (declare (type index i
))))))
405 (macrolet ((frob (name op fun n
)
406 (let ((args (make-gensym-list n
)))
407 `(!define-fop
,op
(,name
,args
) (,fun
,@args
)))))
409 (frob fop-list-1
17 list
1)
410 (frob fop-list-2
18 list
2)
411 (frob fop-list-3
19 list
3)
412 (frob fop-list-4
20 list
4)
413 (frob fop-list-5
21 list
5)
414 (frob fop-list-6
22 list
6)
415 (frob fop-list-7
23 list
7)
416 (frob fop-list-8
24 list
8)
418 (frob fop-list
*-
1 25 list
* 2)
419 (frob fop-list
*-
2 26 list
* 3)
420 (frob fop-list
*-
3 27 list
* 4)
421 (frob fop-list
*-
4 28 list
* 5)
422 (frob fop-list
*-
5 29 list
* 6)
423 (frob fop-list
*-
6 30 list
* 7)
424 (frob fop-list
*-
7 31 list
* 8)
425 (frob fop-list
*-
8 32 list
* 9))
427 ;;;; fops for loading arrays
429 (!define-fop
100 :not-host
(fop-base-string ((:operands length
)))
430 (logically-readonlyize
431 (read-base-string-as-bytes (fasl-input-stream)
432 (make-string length
:element-type
'base-char
))))
434 ;; FIXME: can save space by UTF-8 encoding, or use 1 bit to indicate pure ASCII
435 ;; in the fasl even though the result will be a non-base string.
437 (!define-fop
160 :not-host
(fop-character-string ((:operands length
)))
438 (logically-readonlyize
439 (read-string-as-unsigned-byte-32 (fasl-input-stream)
440 (make-string length
))))
442 (!define-fop
92 (fop-vector ((:operands size
)))
445 (let ((res (make-array size
))
446 (stack (operand-stack)))
447 (declare (fixnum size
))
448 (let ((ptr (fop-stack-pop-n stack size
)))
449 (replace res stack
:start2 ptr
))
450 (logically-readonlyize res
))))
452 ;; No MAKE-ARRAY-HEADER on host
453 (!define-fop
89 :not-host
(fop-array (vec))
454 (let* ((rank (read-word-arg (fasl-input-stream)))
455 (length (length vec
))
456 (res (make-array-header sb
!vm
:simple-array-widetag rank
)))
457 (declare (simple-array vec
)
458 (type (unsigned-byte #.
(- sb
!vm
:n-word-bits sb
!vm
:n-widetag-bits
)) rank
))
459 (set-array-header res vec length nil
0
460 (fop-list-from-stack (operand-stack) rank
)
464 (defglobal **saetp-bits-per-length
**
465 (let ((array (make-array (1+ sb
!vm
:widetag-mask
)
466 :element-type
'(unsigned-byte 8)
467 :initial-element
255)))
468 (loop for saetp across sb
!vm
:*specialized-array-element-type-properties
*
470 (setf (aref array
(sb!vm
:saetp-typecode saetp
))
471 (sb!vm
:saetp-n-bits saetp
)))
473 "255 means bad entry.")
474 (declaim (type (simple-array (unsigned-byte 8) (#.
(1+ sb
!vm
:widetag-mask
)))
475 **saetp-bits-per-length
**))
477 ;; No ALLOCATE-VECTOR on host (nor READ-N-BYTES)
478 (!define-fop
43 :not-host
(fop-spec-vector)
479 (let* ((length (read-word-arg (fasl-input-stream)))
480 (widetag (read-byte-arg (fasl-input-stream)))
481 (bits-per-length (aref **saetp-bits-per-length
** widetag
))
482 (bits (progn (aver (< bits-per-length
255))
483 (* length bits-per-length
)))
484 (bytes (ceiling bits sb
!vm
:n-byte-bits
))
485 (words (ceiling bytes sb
!vm
:n-word-bytes
))
486 (vector (if (and (= widetag sb
!vm
:simple-vector-widetag
)
489 (logically-readonlyize
490 (allocate-vector widetag length words
)))))
491 (declare (type index length bytes words
)
493 (read-n-bytes (fasl-input-stream) vector
0 bytes
)
496 (!define-fop
53 (fop-eval (expr)) ; This seems to be unused
501 (!define-fop
54 (fop-eval-for-effect (expr) nil
) ; This seems to be unused
506 (defun fop-funcall* (input-stream stack skipping
)
507 (let ((argc (read-byte-arg input-stream
)))
508 (with-fop-stack ((stack) ptr
(1+ argc
))
510 (do ((i (+ ptr argc
))
512 ((= i ptr
) (apply (fop-stack-ref i
) args
))
513 (declare (type index i
))
514 (push (fop-stack-ref i
) args
)
517 ;; FIXME: there should be a syntax to share these identical bodies
518 (!define-fop
55 (fop-funcall)
519 (fop-funcall* (fasl-input-stream) (operand-stack) (skip-until)))
520 (!define-fop
56 (fop-funcall-for-effect () nil
)
521 (fop-funcall* (fasl-input-stream) (operand-stack) (skip-until)))
523 ;;; For LOAD-TIME-VALUE which is used for MAKE-LOAD-FORM
524 (!define-fop
57 (fop-funcall-no-skip)
525 (fop-funcall* (fasl-input-stream) (operand-stack) nil
))
527 ;;;; fops for fixing up circularities
529 (!define-fop
200 (fop-rplaca (val) nil
)
530 (let ((obj (ref-fop-table (fasl-input) (read-word-arg (fasl-input-stream))))
531 (idx (read-word-arg (fasl-input-stream))))
532 (setf (car (nthcdr idx obj
)) val
)))
534 (!define-fop
201 (fop-rplacd (val) nil
)
535 (let ((obj (ref-fop-table (fasl-input) (read-word-arg (fasl-input-stream))))
536 (idx (read-word-arg (fasl-input-stream))))
537 (setf (cdr (nthcdr idx obj
)) val
)))
539 (!define-fop
202 (fop-svset (val) nil
)
540 (let* ((obi (read-word-arg (fasl-input-stream)))
541 (obj (ref-fop-table (fasl-input) obi
))
542 (idx (read-word-arg (fasl-input-stream))))
543 (if (%instancep obj
) ; suspicious. should have been FOP-STRUCTSET
544 #+sb-xc
(setf (%instance-ref obj idx
) val
)
545 #-sb-xc
(bug "%instance-set?")
546 (setf (svref obj idx
) val
))))
548 (!define-fop
204 :not-host
(fop-structset (val) nil
)
549 (setf (%instance-ref
(ref-fop-table (fasl-input)
550 (read-word-arg (fasl-input-stream)))
551 (read-word-arg (fasl-input-stream)))
554 ;;; In the original CMUCL code, this actually explicitly declared PUSHP
555 ;;; to be T, even though that's what it defaults to in DEFINE-FOP.
556 (!define-fop
203 (fop-nthcdr (obj))
557 (nthcdr (read-word-arg (fasl-input-stream)) obj
))
559 ;;;; fops for loading functions
561 ;;; (In CMU CL there was a FOP-CODE-FORMAT (47) which was
562 ;;; conventionally placed at the beginning of each fasl file to test
563 ;;; for compatibility between the fasl file and the CMU CL which
564 ;;; loaded it. In SBCL, this functionality has been replaced by
565 ;;; putting the implementation and version in required fields in the
566 ;;; fasl file header.)
568 ;; Cold-load calls COLD-LOAD-CODE instead
569 (!define-fop
#xE0
:not-host
(fop-code ((:operands n-code-bytes n-boxed-words nfuns
)))
570 ;; add 1 word for the toplevel-p flag and one for the debug-info
571 (with-fop-stack ((stack (operand-stack)) ptr
(+ n-boxed-words
2))
572 (load-code nfuns n-boxed-words n-code-bytes stack ptr
(fasl-input))))
574 ;; this gets you an #<fdefn> object, not the result of (FDEFINITION x)
575 ;; cold-loader uses COLD-FDEFINITION-OBJECT instead.
576 (!define-fop
60 :not-host
(fop-fdefn (name))
577 (awhen (deprecated-thing-p 'function name
) ; returns the stage of deprecation
578 (pushnew (list* it name
:function
)
579 (%fasl-input-deprecated-stuff
(fasl-input)) :test
'equal
))
580 (find-or-create-fdefn name
))
582 (!define-fop
65 :not-host
(fop-known-fun (name))
583 (%coerce-name-to-fun name
))
585 ;;; Modify a slot in a CONSTANTS object.
586 (!define-fop
140 :not-host
(fop-alter-code ((:operands index
) code value
) nil
)
587 (setf (code-header-ref code index
) value
)
590 (!define-fop
#xFC
:not-host
(fop-fun-entry ((:operands fun-index
)
591 code-object name arglist type info
))
592 (let ((fun (%code-entry-point code-object fun-index
)))
593 (setf (%simple-fun-name fun
) name
)
594 (setf (%simple-fun-arglist fun
) arglist
)
595 (setf (%simple-fun-type fun
) type
)
596 (setf (%simple-fun-info fun
) info
)
599 ;;;; Some Dylan FOPs used to live here. By 1 November 1998 the code
600 ;;;; was sufficiently stale that the functions it called were no
601 ;;;; longer defined, so I (William Harold Newman) deleted it.
603 ;;;; In case someone in the future is trying to make sense of FOP layout,
604 ;;;; it might be worth recording that the Dylan FOPs were
605 ;;;; 100 FOP-DYLAN-SYMBOL-SAVE
606 ;;;; 101 FOP-SMALL-DYLAN-SYMBOL-SAVE
607 ;;;; 102 FOP-DYLAN-KEYWORD-SAVE
608 ;;;; 103 FOP-SMALL-DYLAN-KEYWORD-SAVE
609 ;;;; 104 FOP-DYLAN-VARINFO-VALUE
611 ;;;; assemblerish fops
613 (!define-fop
144 (fop-assembler-code)
614 (error "cannot load assembler code except at cold load"))
616 ;;; FOPs needed for implementing an IF operator in a FASL
618 ;;; Skip until a FOP-MAYBE-STOP-SKIPPING with the same POSITION is
619 ;;; executed. While skipping, we execute most FOPs normally, except
620 ;;; for ones that a) funcall/eval b) start skipping. This needs to
621 ;;; be done to ensure that the fop table gets populated correctly
622 ;;; regardless of the execution path.
623 (!define-fop
151 (fop-skip (position) nil
)
625 (setf (skip-until) position
))
628 ;;; As before, but only start skipping if the top of the FOP stack is NIL.
629 (!define-fop
152 (fop-skip-if-false (position condition
) nil
)
630 (unless (or condition
(skip-until))
631 (setf (skip-until) position
))
634 ;;; If skipping, pop the top of the stack and discard it. Needed for
635 ;;; ensuring that the stack stays balanced when skipping.
636 (!define-fop
153 (fop-drop-if-skipping () nil
)
638 (fop-stack-pop-n (operand-stack) 1))
641 ;;; If skipping, push a dummy value on the stack. Needed for
642 ;;; ensuring that the stack stays balanced when skipping.
643 (!define-fop
154 (fop-push-nil-if-skipping () nil
)
645 (push-fop-stack nil
(fasl-input)))
648 ;;; Stop skipping if the top of the stack matches SKIP-UNTIL
649 (!define-fop
155 (fop-maybe-stop-skipping (label) nil
)
650 (when (eql (skip-until) label
)
651 (setf (skip-until) nil
))
654 ;;; Primordial layouts.
655 (macrolet ((frob (&rest specs
)
657 (defun known-layout-fop (name)
659 ,@(mapcar (lambda (spec) `((,(cadr spec
)) ,(car spec
)))
661 ,@(mapcar (lambda (spec)
662 `(!define-fop
,(car spec
)
663 (,(symbolicate "FOP-LAYOUT-OF-"
665 (find-layout ',(cadr spec
))))
668 (#x6d structure-object
)
670 (#x6f definition-source-location
)
671 (#x70 sb
!c
::debug-fun
)
672 (#x71 sb
!c
::compiled-debug-fun
)
673 (#x72 sb
!c
::debug-info
)
674 (#x73 sb
!c
::compiled-debug-info
)
675 (#x74 sb
!c
::debug-source
)
676 (#x75 defstruct-description
)
677 (#x76 defstruct-slot-description
)))