/[cmucl]/src/compiler/debug-dump.lisp
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Revision 1.28 - (show annotations)
Thu May 21 22:48:47 1992 UTC (21 years, 11 months ago) by wlott
Branch: MAIN
Changes since 1.27: +17 -12 lines
Added :non-local-entry code location kind, and changed dump-block-locations
to skip emitting the :block-start location if the first location in the
block is a :non-local-entry.  Also, allow code locations to be emitted at
raw (index) positions instead of always requiring that a label be created.
1 ;;; -*- Package: C; Log: C.Log -*-
2 ;;;
3 ;;; **********************************************************************
4 ;;; This code was written as part of the CMU Common Lisp project at
5 ;;; Carnegie Mellon University, and has been placed in the public domain.
6 ;;; If you want to use this code or any part of CMU Common Lisp, please contact
7 ;;; Scott Fahlman or slisp-group@cs.cmu.edu.
8 ;;;
9 (ext:file-comment
10 "$Header: /tiger/var/lib/cvsroots/cmucl/src/compiler/debug-dump.lisp,v 1.28 1992/05/21 22:48:47 wlott Exp $")
11 ;;;
12 ;;; **********************************************************************
13 ;;;
14 ;;; This file contains stuff that creates debugger information from the
15 ;;; compiler's internal data structures.
16 ;;;
17 ;;; Written by Rob MacLachlan
18 ;;;
19 (in-package 'c)
20
21 (defvar *byte-buffer*)
22 (declaim (type (vector (unsigned-byte 8)) *byte-buffer*))
23
24
25 ;;;; Debug blocks:
26
27 (deftype location-kind ()
28 '(member :unknown-return :known-return :internal-error :non-local-exit
29 :block-start :call-site :single-value-return :non-local-entry))
30
31
32 ;;; The Location-Info structure holds the information what we need about
33 ;;; locations which code generation decided were "interesting".
34 ;;;
35 (defstruct (location-info
36 (:constructor make-location-info (kind label vop)))
37 ;;
38 ;; The kind of location noted.
39 (kind nil :type location-kind)
40 ;;
41 ;; The label pointing to the interesting code location.
42 (label nil :type (or label index))
43 ;;
44 ;; The VOP that emitted this location (for node, save-set, ir2-block, etc.)
45 (vop nil :type vop))
46
47
48 ;;; NOTE-DEBUG-LOCATION -- Interface
49 ;;;
50 ;;; Called during code generation in places where there is an "interesting"
51 ;;; location: some place where we are likely to end up in the debugger, and
52 ;;; thus want debug info.
53 ;;;
54 (defun note-debug-location (vop label kind)
55 (declare (type vop vop) (type (or label index) label)
56 (type location-kind kind))
57 (setf (ir2-block-locations (vop-block vop))
58 (nconc (ir2-block-locations (vop-block vop))
59 (list (make-location-info kind label vop))))
60 (undefined-value))
61
62
63 ;;; IR2-BLOCK-ENVIRONMENT -- Interface
64 ;;;
65 (proclaim '(inline ir2-block-environment))
66 (defun ir2-block-environment (2block)
67 (declare (type ir2-block 2block))
68 (block-environment (ir2-block-block 2block)))
69
70
71 ;;; COMPUTE-LIVE-VARS -- Internal
72 ;;;
73 ;;; Given a local conflicts vector and an IR2 block to represent the set of
74 ;;; live TNs, and the Var-Locs hash-table representing the variables dumped,
75 ;;; compute a bit-vector representing the set of live variables. If the TN is
76 ;;; environment-live, we only mark it as live when it is in scope at Node.
77 ;;;
78 (defun compute-live-vars (live node block var-locs vop)
79 (declare (type ir2-block block) (type local-tn-bit-vector live)
80 (type hash-table var-locs) (type node node)
81 (type (or vop null) vop))
82 (let ((res (make-array (logandc2 (+ (hash-table-count var-locs) 7) 7)
83 :element-type 'bit
84 :initial-element 0))
85 (spilled (gethash vop
86 (ir2-component-spilled-vops
87 (component-info *compile-component*)))))
88 (do-live-tns (tn live block)
89 (let ((leaf (tn-leaf tn)))
90 (when (and (lambda-var-p leaf)
91 (or (not (member (tn-kind tn)
92 '(:environment :debug-environment)))
93 (rassoc leaf (lexenv-variables (node-lexenv node))))
94 (or (null spilled)
95 (not (member tn spilled))))
96 (let ((num (gethash leaf var-locs)))
97 (when num
98 (setf (sbit res num) 1))))))
99 res))
100
101
102 ;;; The PC for the location most recently dumped.
103 ;;;
104 (defvar *previous-location*)
105 (proclaim '(type index *previous-location*))
106
107 ;;; DUMP-1-LOCATION -- Internal
108 ;;;
109 ;;; Dump a compiled debug-location into *BYTE-BUFFER* that describes the
110 ;;; code/source map and live info. If true, VOP is the VOP associated with
111 ;;; this location, for use in determining whether TNs are spilled.
112 ;;;
113 (defun dump-1-location (node block kind tlf-num label live var-locs vop)
114 (declare (type node node) (type ir2-block block)
115 (type local-tn-bit-vector live) (type label label)
116 (type location-kind kind) (type (or index null) tlf-num)
117 (type hash-table var-locs) (type (or vop null) vop))
118
119 (vector-push-extend
120 (dpb (position kind compiled-code-location-kinds)
121 compiled-code-location-kind-byte
122 0)
123 *byte-buffer*)
124
125 (let ((loc (label-position label)))
126 (write-var-integer (- loc *previous-location*) *byte-buffer*)
127 (setq *previous-location* loc))
128
129 (let ((path (node-source-path node)))
130 (unless tlf-num
131 (write-var-integer (source-path-tlf-number path) *byte-buffer*))
132 (write-var-integer (source-path-form-number path) *byte-buffer*))
133
134 (write-packed-bit-vector (compute-live-vars live node block var-locs vop)
135 *byte-buffer*)
136
137 (undefined-value))
138
139
140 ;;; DUMP-LOCATION-FROM-INFO -- Internal
141 ;;;
142 ;;; Extract context info from a Location-Info structure and use it to dump a
143 ;;; compiled code-location.
144 ;;;
145 (defun dump-location-from-info (loc tlf-num var-locs)
146 (declare (type location-info loc) (type (or index null) tlf-num)
147 (type hash-table var-locs))
148 (let ((vop (location-info-vop loc)))
149 (dump-1-location (vop-node vop)
150 (vop-block vop)
151 (location-info-kind loc)
152 tlf-num
153 (location-info-label loc)
154 (vop-save-set vop)
155 var-locs
156 vop))
157 (undefined-value))
158
159
160 ;;; FIND-TLF-AND-BLOCK-NUMBERS -- Internal
161 ;;;
162 ;;; Scan all the blocks, caching the block numbering in the BLOCK-FLAG and
163 ;;; determining if all locations are in the same TLF.
164 ;;;
165 (defun find-tlf-and-block-numbers (fun)
166 (declare (type clambda fun))
167 (let ((res (source-path-tlf-number (node-source-path (lambda-bind fun))))
168 (num 0))
169 (declare (type index num) (type (or index null) res))
170 (do-environment-ir2-blocks (2block (lambda-environment fun))
171 (let ((block (ir2-block-block 2block)))
172 (when (eq (block-info block) 2block)
173 (setf (block-flag block) num)
174 (incf num)
175 (unless (eql (source-path-tlf-number
176 (node-source-path
177 (continuation-next
178 (block-start block))))
179 res)
180 (setq res nil)))
181
182 (dolist (loc (ir2-block-locations 2block))
183 (unless (eql (source-path-tlf-number
184 (node-source-path
185 (vop-node (location-info-vop loc))))
186 res)
187 (setq res nil)))))
188 res))
189
190
191 ;;; DUMP-BLOCK-LOCATIONS -- Internal
192 ;;;
193 ;;; Dump out the number of locations and the locations for Block.
194 ;;;
195 (defun dump-block-locations (block locations tlf-num var-locs)
196 (declare (type cblock block) (list locations))
197 (if (and locations
198 (eq (location-kind (first locations))
199 :non-local-entry))
200 (write-var-integer (length locations) *byte-buffer*)
201 (let ((2block (block-info block)))
202 (write-var-integer (+ (length locations) 1) *byte-buffer*)
203 (dump-1-location (continuation-next (block-start block))
204 2block :block-start tlf-num
205 (ir2-block-%label 2block)
206 (ir2-block-live-out 2block)
207 var-locs
208 nil)))
209 (dolist (loc locations)
210 (dump-location-from-info loc tlf-num var-locs))
211 (undefined-value))
212
213
214 ;;; DUMP-BLOCK-SUCCESSORS -- Internal
215 ;;;
216 ;;; Dump the successors of Block, being careful not to fly into space on
217 ;;; weird successors.
218 ;;;
219 (defun dump-block-successors (block env)
220 (declare (type cblock block) (type environment env))
221 (let* ((tail (component-tail (block-component block)))
222 (succ (block-succ block))
223 (valid-succ
224 (if (and succ
225 (or (eq (car succ) tail)
226 (not (eq (block-environment (car succ)) env))))
227 ()
228 succ)))
229 (vector-push-extend
230 (dpb (length valid-succ) compiled-debug-block-nsucc-byte 0)
231 *byte-buffer*)
232 (dolist (b valid-succ)
233 (write-var-integer (block-flag b) *byte-buffer*)))
234 (undefined-value))
235
236
237 ;;; COMPUTE-DEBUG-BLOCKS -- Internal
238 ;;;
239 ;;; Return a vector and an integer (or null) suitable for use as the BLOCKS
240 ;;; and TLF-NUMBER in Fun's debug-function. This requires three passes to
241 ;;; compute:
242 ;;; -- Scan all blocks, dumping the header and successors followed by all the
243 ;;; non-elsewhere locations.
244 ;;; -- Dump the elsewhere block header and all the elsewhere locations (if
245 ;;; any.)
246 ;;;
247 (defun compute-debug-blocks (fun var-locs)
248 (declare (type clambda fun) (type hash-table var-locs))
249 (setf (fill-pointer *byte-buffer*) 0)
250 (let ((*previous-location* 0)
251 (tlf-num (find-tlf-and-block-numbers fun))
252 (env (lambda-environment fun))
253 (prev-locs nil)
254 (prev-block nil))
255 (collect ((elsewhere))
256 (do-environment-ir2-blocks (2block env)
257 (let ((block (ir2-block-block 2block)))
258 (when (eq (block-info block) 2block)
259 (when prev-block
260 (dump-block-locations prev-block prev-locs tlf-num var-locs))
261 (setq prev-block block prev-locs ())
262 (dump-block-successors block env)))
263
264 (collect ((here prev-locs))
265 (dolist (loc (ir2-block-locations 2block))
266 (if (label-elsewhere-p (location-info-label loc))
267 (elsewhere loc)
268 (here loc)))
269 (setq prev-locs (here))))
270
271 (dump-block-locations prev-block prev-locs tlf-num var-locs)
272
273 (when (elsewhere)
274 (vector-push-extend compiled-debug-block-elsewhere-p *byte-buffer*)
275 (write-var-integer (length (elsewhere)) *byte-buffer*)
276 (dolist (loc (elsewhere))
277 (dump-location-from-info loc tlf-num var-locs))))
278
279 (values (copy-seq *byte-buffer*) tlf-num)))
280
281
282 ;;; DEBUG-SOURCE-FOR-INFO -- Interface
283 ;;;
284 ;;; Return a list of DEBUG-SOURCE structures containing information derived
285 ;;; from Info. We always dump the Start-Positions, since it is too hard
286 ;;; figure out whether we need them or not.
287 ;;;
288 (defun debug-source-for-info (info)
289 (declare (type source-info info))
290 (assert (not (source-info-current-file info)))
291 (mapcar #'(lambda (x)
292 (let ((name (file-info-name x))
293 (res (make-debug-source
294 :from :file
295 :comment (file-info-comment x)
296 :created (file-info-write-date x)
297 :compiled (source-info-start-time info)
298 :source-root (file-info-source-root x)
299 :start-positions
300 (coerce-to-smallest-eltype
301 (file-info-positions x)))))
302 (cond ((simple-string-p name)
303 (setf (debug-source-name res) name))
304 (t
305 (setf (debug-source-from res) name)
306 (setf (debug-source-name res)
307 (coerce (file-info-forms x) 'simple-vector))))
308 res))
309 (source-info-files info)))
310
311
312 ;;; COERCE-TO-SMALLEST-ELTYPE -- Internal
313 ;;;
314 ;;; Given an arbirtary sequence, coerce it to an unsigned vector if
315 ;;; possible.
316 ;;;
317 (defun coerce-to-smallest-eltype (seq)
318 (declare (type sequence seq))
319 (let ((max 0))
320 (declare (type (or index null) max))
321 (macrolet ((frob ()
322 '(if (and (typep val 'index) max)
323 (when (> val max)
324 (setq max val))
325 (setq max nil))))
326 (if (listp seq)
327 (dolist (val seq)
328 (frob))
329 (dotimes (i (length seq))
330 (let ((val (aref seq i)))
331 (frob)))))
332
333 (if max
334 (coerce seq `(simple-array (integer 0 ,max)))
335 (coerce seq 'simple-vector))))
336
337
338 ;;;; Variables:
339
340 ;;; TN-SC-OFFSET -- Internal
341 ;;;
342 ;;; Return a SC-OFFSET describing TN's location.
343 ;;;
344 (defun tn-sc-offset (tn)
345 (declare (type tn tn))
346 (make-sc-offset (sc-number (tn-sc tn))
347 (tn-offset tn)))
348
349
350 ;;; DUMP-1-VARIABLE -- Internal
351 ;;;
352 ;;; Dump info to represent Var's location being TN. ID is an integer that
353 ;;; makes Var's name unique in the function. Buffer is the vector we stick the
354 ;;; result in. If Minimal is true, we suppress name dumping, and set the
355 ;;; minimal flag.
356 ;;;
357 ;;; The debug-variable is only marked as always-live if the TN is
358 ;;; environment live and is an argument. If a :debug-environment TN, then we
359 ;;; also exclude set variables, since the variable is not guranteed to be live
360 ;;; everywhere in that case.
361 ;;;
362 (defun dump-1-variable (fun var tn id minimal buffer)
363 (declare (type lambda-var var) (type (or tn null) tn) (type index id)
364 (type clambda fun))
365 (let* ((name (leaf-name var))
366 (package (symbol-package name))
367 (package-p (and package (not (eq package *package*))))
368 (save-tn (and tn (tn-save-tn tn)))
369 (kind (and tn (tn-kind tn)))
370 (flags 0))
371 (declare (type index flags))
372 (cond (minimal
373 (setq flags (logior flags compiled-debug-variable-minimal-p))
374 (unless tn
375 (setq flags (logior flags compiled-debug-variable-deleted-p))))
376 (t
377 (unless package
378 (setq flags (logior flags compiled-debug-variable-uninterned)))
379 (when package-p
380 (setq flags (logior flags compiled-debug-variable-packaged)))))
381 (when (and (or (eq kind :environment)
382 (and (eq kind :debug-environment)
383 (null (basic-var-sets var))))
384 (not (gethash tn (ir2-component-spilled-tns
385 (component-info *compile-component*))))
386 (eq (lambda-var-home var) fun))
387 (setq flags (logior flags compiled-debug-variable-environment-live)))
388 (when save-tn
389 (setq flags (logior flags compiled-debug-variable-save-loc-p)))
390 (unless (or (zerop id) minimal)
391 (setq flags (logior flags compiled-debug-variable-id-p)))
392 (vector-push-extend flags buffer)
393 (unless minimal
394 (write-var-string (symbol-name name) buffer)
395 (when package-p
396 (write-var-string (package-name package) buffer))
397 (unless (zerop id)
398 (write-var-integer id buffer)))
399 (if tn
400 (write-var-integer (tn-sc-offset tn) buffer)
401 (assert minimal))
402 (when save-tn
403 (write-var-integer (tn-sc-offset save-tn) buffer)))
404 (undefined-value))
405
406
407 ;;; COMPUTE-VARIABLES -- Internal
408 ;;;
409 ;;; Return a vector suitable for use as the DEBUG-FUNCTION-VARIABLES of Fun.
410 ;;; Level is the current DEBUG-INFO quality. Var-Locs is a hashtable in which
411 ;;; we enter the translation from LAMBDA-VARS to the relative position of that
412 ;;; variable's location in the resulting vector.
413 ;;;
414 (defun compute-variables (fun level var-locs)
415 (declare (type clambda fun) (type hash-table var-locs))
416 (collect ((vars))
417 (labels ((frob-leaf (leaf tn gensym-p)
418 (let ((name (leaf-name leaf)))
419 (when (and name (leaf-refs leaf) (tn-offset tn)
420 (or gensym-p (symbol-package name)))
421 (vars (cons leaf tn)))))
422 (frob-lambda (x gensym-p)
423 (dolist (leaf (lambda-vars x))
424 (frob-leaf leaf (leaf-info leaf) gensym-p))))
425 (frob-lambda fun t)
426 (when (>= level 2)
427 (dolist (x (ir2-environment-environment
428 (environment-info (lambda-environment fun))))
429 (let ((thing (car x)))
430 (when (lambda-var-p thing)
431 (frob-leaf thing (cdr x) (= level 3)))))
432
433 (dolist (let (lambda-lets fun))
434 (frob-lambda let (= level 3)))))
435
436 (setf (fill-pointer *byte-buffer*) 0)
437 (let ((sorted (sort (vars) #'string<
438 :key #'(lambda (x)
439 (symbol-name (leaf-name (car x))))))
440 (prev-name nil)
441 (id 0)
442 (i 0))
443 (declare (type (or simple-string null) prev-name)
444 (type index id i))
445 (dolist (x sorted)
446 (let* ((var (car x))
447 (name (symbol-name (leaf-name var))))
448 (cond ((and prev-name (string= prev-name name))
449 (incf id))
450 (t
451 (setq id 0 prev-name name)))
452 (dump-1-variable fun var (cdr x) id nil *byte-buffer*)
453 (setf (gethash var var-locs) i))
454 (incf i)))
455
456 (copy-seq *byte-buffer*)))
457
458
459 ;;; COMPUTE-MINIMAL-VARIABLES -- Internal
460 ;;;
461 ;;; Dump out the arguments to Fun in the minimal variable format.
462 ;;;
463 (defun compute-minimal-variables (fun)
464 (declare (type clambda fun))
465 (setf (fill-pointer *byte-buffer*) 0)
466 (dolist (var (lambda-vars fun))
467 (dump-1-variable fun var (leaf-info var) 0 t *byte-buffer*))
468 (copy-seq *byte-buffer*))
469
470
471 ;;; DEBUG-LOCATION-FOR -- Internal
472 ;;;
473 ;;; Return Var's relative position in the function's variables (determined
474 ;;; from the Var-Locs hashtable.) If Var is deleted, the return DELETED.
475 ;;;
476 (defun debug-location-for (var var-locs)
477 (declare (type lambda-var var) (type hash-table var-locs))
478 (let ((res (gethash var var-locs)))
479 (cond (res)
480 (t
481 (assert (or (null (leaf-refs var))
482 (not (tn-offset (leaf-info var)))))
483 'deleted))))
484
485
486 ;;;; Arguments/returns:
487
488 ;;; COMPUTE-ARGUMENTS -- Internal
489 ;;;
490 ;;; Return a vector to be used as the COMPILED-DEBUG-FUNCTION-ARGUMENTS for
491 ;;; Fun. If fun is the MAIN-ENTRY for an optional dispatch, then look at the
492 ;;; ARGLIST to determine the syntax, otherwise pretend all arguments are fixed.
493 ;;;
494 ;;; ### This assumption breaks down in EPs other than the main-entry, since
495 ;;; they may or may not have supplied-p vars, etc.
496 ;;;
497 (defun compute-arguments (fun var-locs)
498 (declare (type clambda fun) (type hash-table var-locs))
499 (collect ((res))
500 (let ((od (lambda-optional-dispatch fun)))
501 (if (and od (eq (optional-dispatch-main-entry od) fun))
502 (let ((actual-vars (lambda-vars fun))
503 (saw-optional nil))
504 (dolist (arg (optional-dispatch-arglist od))
505 (let ((info (lambda-var-arg-info arg))
506 (actual (pop actual-vars)))
507 (cond (info
508 (case (arg-info-kind info)
509 (:keyword
510 (res (arg-info-keyword info)))
511 (:rest
512 (res 'rest-arg))
513 (:optional
514 (unless saw-optional
515 (res 'optional-args)
516 (setq saw-optional t))))
517 (res (debug-location-for actual var-locs))
518 (when (arg-info-supplied-p info)
519 (res 'supplied-p)
520 (res (debug-location-for (pop actual-vars) var-locs))))
521 (t
522 (res (debug-location-for actual var-locs)))))))
523 (dolist (var (lambda-vars fun))
524 (res (debug-location-for var var-locs)))))
525
526 (coerce-to-smallest-eltype (res))))
527
528
529 ;;; COMPUTE-DEBUG-RETURNS -- Internal
530 ;;;
531 ;;; Return a vector of SC offsets describing Fun's return locations. (Must
532 ;;; be known values return...)
533 ;;;
534 (defun compute-debug-returns (fun)
535 (coerce-to-smallest-eltype
536 (mapcar #'(lambda (loc)
537 (tn-sc-offset loc))
538 (return-info-locations (tail-set-info (lambda-tail-set fun))))))
539
540
541 ;;;; Debug functions:
542
543 ;;; DFUN-FROM-FUN -- Internal
544 ;;;
545 ;;; Return a C-D-F structure with all the mandatory slots filled in.
546 ;;;
547 (defun dfun-from-fun (fun)
548 (declare (type clambda fun))
549 (let* ((2env (environment-info (lambda-environment fun)))
550 (dispatch (lambda-optional-dispatch fun))
551 (main-p (and dispatch
552 (eq fun (optional-dispatch-main-entry dispatch)))))
553 (make-compiled-debug-function
554 :name (cond ((leaf-name fun))
555 ((let ((ef (functional-entry-function
556 fun)))
557 (and ef (leaf-name ef))))
558 ((and main-p (leaf-name dispatch)))
559 (t
560 (component-name
561 (block-component (node-block (lambda-bind fun))))))
562 :kind (if main-p nil (functional-kind fun))
563 :return-pc (tn-sc-offset (ir2-environment-return-pc 2env))
564 :old-fp (tn-sc-offset (ir2-environment-old-fp 2env))
565 :start-pc (label-position (ir2-environment-environment-start 2env))
566 :elsewhere-pc (label-position (ir2-environment-elsewhere-start 2env)))))
567
568
569 ;;; COMPUTE-1-DEBUG-FUNCTION -- Internal
570 ;;;
571 ;;; Return a complete C-D-F structure for Fun. This involves determining
572 ;;; the DEBUG-INFO level and filling in optional slots as appropriate.
573 ;;;
574 (defun compute-1-debug-function (fun var-locs)
575 (declare (type clambda fun) (type hash-table var-locs))
576 (let* ((dfun (dfun-from-fun fun))
577 (level (cookie-debug
578 (lexenv-cookie (node-lexenv (lambda-bind fun))))))
579
580 (cond ((zerop level))
581 ((and (<= level 1)
582 (let ((od (lambda-optional-dispatch fun)))
583 (or (not od)
584 (not (eq (optional-dispatch-main-entry od) fun)))))
585 (setf (compiled-debug-function-variables dfun)
586 (compute-minimal-variables fun))
587 (setf (compiled-debug-function-arguments dfun) :minimal))
588 (t
589 (setf (compiled-debug-function-variables dfun)
590 (compute-variables fun level var-locs))
591 (setf (compiled-debug-function-arguments dfun)
592 (compute-arguments fun var-locs))))
593
594 (when (>= level 2)
595 (multiple-value-bind (blocks tlf-num)
596 (compute-debug-blocks fun var-locs)
597 (setf (compiled-debug-function-tlf-number dfun) tlf-num)
598 (setf (compiled-debug-function-blocks dfun) blocks)))
599
600 (if (external-entry-point-p fun)
601 (setf (compiled-debug-function-returns dfun) :standard)
602 (let ((info (tail-set-info (lambda-tail-set fun))))
603 (when info
604 (cond ((eq (return-info-kind info) :unknown)
605 (setf (compiled-debug-function-returns dfun)
606 :standard))
607 ((/= level 0)
608 (setf (compiled-debug-function-returns dfun)
609 (compute-debug-returns fun)))))))
610 dfun))
611
612
613 ;;;; Minimal debug functions:
614
615 ;;; DEBUG-FUNCTION-MINIMAL-P -- Internal
616 ;;;
617 ;;; Return true if Dfun can be represented as a minimal debug function.
618 ;;; Dfun is a cons (<start offset> . C-D-F).
619 ;;;
620 (defun debug-function-minimal-p (dfun)
621 (declare (type cons dfun))
622 (let ((dfun (cdr dfun)))
623 (and (member (compiled-debug-function-arguments dfun) '(:minimal nil))
624 (null (compiled-debug-function-blocks dfun)))))
625
626
627 ;;; DUMP-1-MINIMAL-DFUN -- Internal
628 ;;;
629 ;;; Dump a packed binary representation of a Dfun into *byte-buffer*.
630 ;;; Prev-Start and Start are the byte offsets in the code where the previous
631 ;;; function started and where this one starts. Prev-Elsewhere is the previous
632 ;;; function's elsewhere PC.
633 ;;;
634 (defun dump-1-minimal-dfun (dfun prev-start start prev-elsewhere)
635 (declare (type compiled-debug-function dfun)
636 (type index prev-start start prev-elsewhere))
637 (let* ((name (compiled-debug-function-name dfun))
638 (setf-p (and (consp name) (eq (car name) 'setf)
639 (consp (cdr name)) (symbolp (cadr name))))
640 (base-name (if setf-p (cadr name) name))
641 (pkg (when (symbolp base-name)
642 (symbol-package base-name)))
643 (name-rep
644 (cond ((stringp base-name)
645 minimal-debug-function-name-component)
646 ((not pkg)
647 minimal-debug-function-name-uninterned)
648 ((eq pkg *package*)
649 minimal-debug-function-name-symbol)
650 (t
651 minimal-debug-function-name-packaged))))
652 (assert (or (atom name) setf-p))
653 (let ((options 0))
654 (setf (ldb minimal-debug-function-name-style-byte options) name-rep)
655 (setf (ldb minimal-debug-function-kind-byte options)
656 (position (compiled-debug-function-kind dfun)
657 minimal-debug-function-kinds))
658 (setf (ldb minimal-debug-function-returns-byte options)
659 (etypecase (compiled-debug-function-returns dfun)
660 ((member :standard) minimal-debug-function-returns-standard)
661 ((member :fixed) minimal-debug-function-returns-fixed)
662 (vector minimal-debug-function-returns-specified)))
663 (vector-push-extend options *byte-buffer*))
664
665 (let ((flags 0))
666 (when setf-p
667 (setq flags (logior flags minimal-debug-function-setf-bit)))
668 (when (compiled-debug-function-nfp dfun)
669 (setq flags (logior flags minimal-debug-function-nfp-bit)))
670 (when (compiled-debug-function-variables dfun)
671 (setq flags (logior flags minimal-debug-function-variables-bit)))
672 (vector-push-extend flags *byte-buffer*))
673
674 (when (eql name-rep minimal-debug-function-name-packaged)
675 (write-var-string (package-name pkg) *byte-buffer*))
676 (unless (stringp base-name)
677 (write-var-string (symbol-name base-name) *byte-buffer*))
678
679 (let ((vars (compiled-debug-function-variables dfun)))
680 (when vars
681 (let ((len (length vars)))
682 (write-var-integer len *byte-buffer*)
683 (dotimes (i len)
684 (vector-push-extend (aref vars i) *byte-buffer*)))))
685
686 (let ((returns (compiled-debug-function-returns dfun)))
687 (when (vectorp returns)
688 (let ((len (length returns)))
689 (write-var-integer len *byte-buffer*)
690 (dotimes (i len)
691 (write-var-integer (aref returns i) *byte-buffer*)))))
692
693 (write-var-integer (compiled-debug-function-return-pc dfun)
694 *byte-buffer*)
695 (write-var-integer (compiled-debug-function-old-fp dfun)
696 *byte-buffer*)
697 (when (compiled-debug-function-nfp dfun)
698 (write-var-integer (compiled-debug-function-nfp dfun)
699 *byte-buffer*))
700 (write-var-integer (- start prev-start) *byte-buffer*)
701 (write-var-integer (- (compiled-debug-function-start-pc dfun) start)
702 *byte-buffer*)
703 (write-var-integer (- (compiled-debug-function-elsewhere-pc dfun)
704 prev-elsewhere)
705 *byte-buffer*)))
706
707
708 ;;; COMPUTE-MINIMAL-DEBUG-FUNCTIONS -- Internal
709 ;;;
710 ;;; Return a byte-vector holding all the debug functions for a component in
711 ;;; the packed binary minimal-debug-function format.
712 ;;;
713 (defun compute-minimal-debug-functions (dfuns)
714 (declare (list dfuns))
715 (setf (fill-pointer *byte-buffer*) 0)
716 (let ((prev-start 0)
717 (prev-elsewhere 0))
718 (dolist (dfun dfuns)
719 (let ((start (car dfun))
720 (elsewhere (compiled-debug-function-elsewhere-pc (cdr dfun))))
721 (dump-1-minimal-dfun (cdr dfun) prev-start start prev-elsewhere)
722 (setq prev-start start prev-elsewhere elsewhere))))
723 (copy-seq *byte-buffer*))
724
725
726 ;;;; Full component dumping:
727
728 ;;; COMPUTE-DEBUG-FUNCTION-MAP -- Internal
729 ;;;
730 ;;; Compute the full form (simple-vector) function map.
731 ;;;
732 (defun compute-debug-function-map (sorted)
733 (declare (list sorted))
734 (let* ((len (1- (* (length sorted) 2)))
735 (funs-vec (make-array len)))
736 (do ((i -1 (+ i 2))
737 (sorted sorted (cdr sorted)))
738 ((= i len))
739 (declare (fixnum i))
740 (let ((dfun (car sorted)))
741 (unless (minusp i)
742 (setf (svref funs-vec i) (car dfun)))
743 (setf (svref funs-vec (1+ i)) (cdr dfun))))
744 funs-vec))
745
746
747 ;;; DEBUG-INFO-FOR-COMPONENT -- Interface
748 ;;;
749 ;;; Return a debug-info structure describing component. This has to be
750 ;;; called after assembly so that source map information is available.
751 ;;;
752 (defun debug-info-for-component (component)
753 (declare (type component component))
754 (let ((res (make-compiled-debug-info :name (component-name component)
755 :package (package-name *package*))))
756 (collect ((dfuns))
757 (let ((var-locs (make-hash-table :test #'eq))
758 (*byte-buffer*
759 (make-array 10 :element-type '(unsigned-byte 8)
760 :fill-pointer 0 :adjustable t)))
761 (dolist (fun (component-lambdas component))
762 (clrhash var-locs)
763 (dfuns (cons (label-position
764 (block-label (node-block (lambda-bind fun))))
765 (compute-1-debug-function fun var-locs))))
766
767 (let ((sorted (sort (dfuns) #'< :key #'car)))
768 (setf (compiled-debug-info-function-map res)
769 (if (every #'debug-function-minimal-p sorted)
770 (compute-minimal-debug-functions sorted)
771 (compute-debug-function-map sorted))))))
772
773 res))

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