xref: /openbmc/linux/tools/perf/util/parse-events.y (revision 2d68bb26) 
1 %pure-parser
2 %parse-param {void *_parse_state}
3 %parse-param {void *scanner}
4 %lex-param {void* scanner}
5 %locations
6 
7 %{
8 
9 #define YYDEBUG 1
10 
11 #include <fnmatch.h>
12 #include <stdio.h>
13 #include <linux/compiler.h>
14 #include <linux/types.h>
15 #include <linux/zalloc.h>
16 #include "pmu.h"
17 #include "evsel.h"
18 #include "parse-events.h"
19 #include "parse-events-bison.h"
20 
21 void parse_events_error(YYLTYPE *loc, void *parse_state, void *scanner, char const *msg);
22 
23 #define ABORT_ON(val) \
24 do { \
25 	if (val) \
26 		YYABORT; \
27 } while (0)
28 
29 static struct list_head* alloc_list()
30 {
31 	struct list_head *list;
32 
33 	list = malloc(sizeof(*list));
34 	if (!list)
35 		return NULL;
36 
37 	INIT_LIST_HEAD(list);
38 	return list;
39 }
40 
41 static void free_list_evsel(struct list_head* list_evsel)
42 {
43 	struct evsel *evsel, *tmp;
44 
45 	list_for_each_entry_safe(evsel, tmp, list_evsel, core.node) {
46 		list_del_init(&evsel->core.node);
47 		perf_evsel__delete(evsel);
48 	}
49 	free(list_evsel);
50 }
51 
52 static void inc_group_count(struct list_head *list,
53 		       struct parse_events_state *parse_state)
54 {
55 	/* Count groups only have more than 1 members */
56 	if (!list_is_last(list->next, list))
57 		parse_state->nr_groups++;
58 }
59 
60 %}
61 
62 %token PE_START_EVENTS PE_START_TERMS
63 %token PE_VALUE PE_VALUE_SYM_HW PE_VALUE_SYM_SW PE_RAW PE_TERM
64 %token PE_VALUE_SYM_TOOL
65 %token PE_EVENT_NAME
66 %token PE_NAME
67 %token PE_BPF_OBJECT PE_BPF_SOURCE
68 %token PE_MODIFIER_EVENT PE_MODIFIER_BP
69 %token PE_NAME_CACHE_TYPE PE_NAME_CACHE_OP_RESULT
70 %token PE_PREFIX_MEM PE_PREFIX_RAW PE_PREFIX_GROUP
71 %token PE_ERROR
72 %token PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT
73 %token PE_ARRAY_ALL PE_ARRAY_RANGE
74 %token PE_DRV_CFG_TERM
75 %type <num> PE_VALUE
76 %type <num> PE_VALUE_SYM_HW
77 %type <num> PE_VALUE_SYM_SW
78 %type <num> PE_VALUE_SYM_TOOL
79 %type <num> PE_RAW
80 %type <num> PE_TERM
81 %type <num> value_sym
82 %type <str> PE_NAME
83 %type <str> PE_BPF_OBJECT
84 %type <str> PE_BPF_SOURCE
85 %type <str> PE_NAME_CACHE_TYPE
86 %type <str> PE_NAME_CACHE_OP_RESULT
87 %type <str> PE_MODIFIER_EVENT
88 %type <str> PE_MODIFIER_BP
89 %type <str> PE_EVENT_NAME
90 %type <str> PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT
91 %type <str> PE_DRV_CFG_TERM
92 %destructor { free ($$); } <str>
93 %type <term> event_term
94 %destructor { parse_events_term__delete ($$); } <term>
95 %type <list_terms> event_config
96 %type <list_terms> opt_event_config
97 %type <list_terms> opt_pmu_config
98 %destructor { parse_events_terms__delete ($$); } <list_terms>
99 %type <list_evsel> event_pmu
100 %type <list_evsel> event_legacy_symbol
101 %type <list_evsel> event_legacy_cache
102 %type <list_evsel> event_legacy_mem
103 %type <list_evsel> event_legacy_tracepoint
104 %type <list_evsel> event_legacy_numeric
105 %type <list_evsel> event_legacy_raw
106 %type <list_evsel> event_bpf_file
107 %type <list_evsel> event_def
108 %type <list_evsel> event_mod
109 %type <list_evsel> event_name
110 %type <list_evsel> event
111 %type <list_evsel> events
112 %type <list_evsel> group_def
113 %type <list_evsel> group
114 %type <list_evsel> groups
115 %destructor { free_list_evsel ($$); } <list_evsel>
116 %type <tracepoint_name> tracepoint_name
117 %destructor { free ($$.sys); free ($$.event); } <tracepoint_name>
118 %type <array> array
119 %type <array> array_term
120 %type <array> array_terms
121 %destructor { free ($$.ranges); } <array>
122 
123 %union
124 {
125 	char *str;
126 	u64 num;
127 	struct list_head *list_evsel;
128 	struct list_head *list_terms;
129 	struct parse_events_term *term;
130 	struct tracepoint_name {
131 		char *sys;
132 		char *event;
133 	} tracepoint_name;
134 	struct parse_events_array array;
135 }
136 %%
137 
138 start:
139 PE_START_EVENTS start_events
140 |
141 PE_START_TERMS  start_terms
142 
143 start_events: groups
144 {
145 	struct parse_events_state *parse_state = _parse_state;
146 
147 	/* frees $1 */
148 	parse_events_update_lists($1, &parse_state->list);
149 }
150 
151 groups:
152 groups ',' group
153 {
154 	struct list_head *list  = $1;
155 	struct list_head *group = $3;
156 
157 	/* frees $3 */
158 	parse_events_update_lists(group, list);
159 	$$ = list;
160 }
161 |
162 groups ',' event
163 {
164 	struct list_head *list  = $1;
165 	struct list_head *event = $3;
166 
167 	/* frees $3 */
168 	parse_events_update_lists(event, list);
169 	$$ = list;
170 }
171 |
172 group
173 |
174 event
175 
176 group:
177 group_def ':' PE_MODIFIER_EVENT
178 {
179 	struct list_head *list = $1;
180 	int err;
181 
182 	err = parse_events__modifier_group(list, $3);
183 	free($3);
184 	if (err) {
185 		free_list_evsel(list);
186 		YYABORT;
187 	}
188 	$$ = list;
189 }
190 |
191 group_def
192 
193 group_def:
194 PE_NAME '{' events '}'
195 {
196 	struct list_head *list = $3;
197 
198 	inc_group_count(list, _parse_state);
199 	parse_events__set_leader($1, list, _parse_state);
200 	free($1);
201 	$$ = list;
202 }
203 |
204 '{' events '}'
205 {
206 	struct list_head *list = $2;
207 
208 	inc_group_count(list, _parse_state);
209 	parse_events__set_leader(NULL, list, _parse_state);
210 	$$ = list;
211 }
212 
213 events:
214 events ',' event
215 {
216 	struct list_head *event = $3;
217 	struct list_head *list  = $1;
218 
219 	/* frees $3 */
220 	parse_events_update_lists(event, list);
221 	$$ = list;
222 }
223 |
224 event
225 
226 event: event_mod
227 
228 event_mod:
229 event_name PE_MODIFIER_EVENT
230 {
231 	struct list_head *list = $1;
232 	int err;
233 
234 	/*
235 	 * Apply modifier on all events added by single event definition
236 	 * (there could be more events added for multiple tracepoint
237 	 * definitions via '*?'.
238 	 */
239 	err = parse_events__modifier_event(list, $2, false);
240 	free($2);
241 	if (err) {
242 		free_list_evsel(list);
243 		YYABORT;
244 	}
245 	$$ = list;
246 }
247 |
248 event_name
249 
250 event_name:
251 PE_EVENT_NAME event_def
252 {
253 	int err;
254 
255 	err = parse_events_name($2, $1);
256 	free($1);
257 	if (err) {
258 		free_list_evsel($2);
259 		YYABORT;
260 	}
261 	$$ = $2;
262 }
263 |
264 event_def
265 
266 event_def: event_pmu |
267 	   event_legacy_symbol |
268 	   event_legacy_cache sep_dc |
269 	   event_legacy_mem |
270 	   event_legacy_tracepoint sep_dc |
271 	   event_legacy_numeric sep_dc |
272 	   event_legacy_raw sep_dc |
273 	   event_bpf_file
274 
275 event_pmu:
276 PE_NAME opt_pmu_config
277 {
278 	struct parse_events_state *parse_state = _parse_state;
279 	struct parse_events_error *error = parse_state->error;
280 	struct list_head *list = NULL, *orig_terms = NULL, *terms= NULL;
281 	char *pattern = NULL;
282 
283 #define CLEANUP_YYABORT					\
284 	do {						\
285 		parse_events_terms__delete($2);		\
286 		parse_events_terms__delete(orig_terms);	\
287 		free(list);				\
288 		free($1);				\
289 		free(pattern);				\
290 		YYABORT;				\
291 	} while(0)
292 
293 	if (parse_events_copy_term_list($2, &orig_terms))
294 		CLEANUP_YYABORT;
295 
296 	if (error)
297 		error->idx = @1.first_column;
298 
299 	list = alloc_list();
300 	if (!list)
301 		CLEANUP_YYABORT;
302 	if (parse_events_add_pmu(_parse_state, list, $1, $2, false, false)) {
303 		struct perf_pmu *pmu = NULL;
304 		int ok = 0;
305 
306 		if (asprintf(&pattern, "%s*", $1) < 0)
307 			CLEANUP_YYABORT;
308 
309 		while ((pmu = perf_pmu__scan(pmu)) != NULL) {
310 			char *name = pmu->name;
311 
312 			if (!strncmp(name, "uncore_", 7) &&
313 			    strncmp($1, "uncore_", 7))
314 				name += 7;
315 			if (!fnmatch(pattern, name, 0)) {
316 				if (parse_events_copy_term_list(orig_terms, &terms))
317 					CLEANUP_YYABORT;
318 				if (!parse_events_add_pmu(_parse_state, list, pmu->name, terms, true, false))
319 					ok++;
320 				parse_events_terms__delete(terms);
321 			}
322 		}
323 
324 		if (!ok)
325 			CLEANUP_YYABORT;
326 	}
327 	parse_events_terms__delete($2);
328 	parse_events_terms__delete(orig_terms);
329 	free($1);
330 	$$ = list;
331 #undef CLEANUP_YYABORT
332 }
333 |
334 PE_KERNEL_PMU_EVENT sep_dc
335 {
336 	struct list_head *list;
337 	int err;
338 
339 	err = parse_events_multi_pmu_add(_parse_state, $1, &list);
340 	free($1);
341 	if (err < 0)
342 		YYABORT;
343 	$$ = list;
344 }
345 |
346 PE_PMU_EVENT_PRE '-' PE_PMU_EVENT_SUF sep_dc
347 {
348 	struct list_head *list;
349 	char pmu_name[128];
350 
351 	snprintf(&pmu_name, 128, "%s-%s", $1, $3);
352 	free($1);
353 	free($3);
354 	if (parse_events_multi_pmu_add(_parse_state, pmu_name, &list) < 0)
355 		YYABORT;
356 	$$ = list;
357 }
358 
359 value_sym:
360 PE_VALUE_SYM_HW
361 |
362 PE_VALUE_SYM_SW
363 
364 event_legacy_symbol:
365 value_sym '/' event_config '/'
366 {
367 	struct list_head *list;
368 	int type = $1 >> 16;
369 	int config = $1 & 255;
370 	int err;
371 
372 	list = alloc_list();
373 	ABORT_ON(!list);
374 	err = parse_events_add_numeric(_parse_state, list, type, config, $3);
375 	parse_events_terms__delete($3);
376 	if (err) {
377 		free_list_evsel(list);
378 		YYABORT;
379 	}
380 	$$ = list;
381 }
382 |
383 value_sym sep_slash_slash_dc
384 {
385 	struct list_head *list;
386 	int type = $1 >> 16;
387 	int config = $1 & 255;
388 
389 	list = alloc_list();
390 	ABORT_ON(!list);
391 	ABORT_ON(parse_events_add_numeric(_parse_state, list, type, config, NULL));
392 	$$ = list;
393 }
394 |
395 PE_VALUE_SYM_TOOL sep_slash_slash_dc
396 {
397 	struct list_head *list;
398 
399 	list = alloc_list();
400 	ABORT_ON(!list);
401 	ABORT_ON(parse_events_add_tool(_parse_state, list, $1));
402 	$$ = list;
403 }
404 
405 event_legacy_cache:
406 PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT opt_event_config
407 {
408 	struct parse_events_state *parse_state = _parse_state;
409 	struct parse_events_error *error = parse_state->error;
410 	struct list_head *list;
411 	int err;
412 
413 	list = alloc_list();
414 	ABORT_ON(!list);
415 	err = parse_events_add_cache(list, &parse_state->idx, $1, $3, $5, error, $6);
416 	parse_events_terms__delete($6);
417 	free($1);
418 	free($3);
419 	free($5);
420 	if (err) {
421 		free_list_evsel(list);
422 		YYABORT;
423 	}
424 	$$ = list;
425 }
426 |
427 PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT opt_event_config
428 {
429 	struct parse_events_state *parse_state = _parse_state;
430 	struct parse_events_error *error = parse_state->error;
431 	struct list_head *list;
432 	int err;
433 
434 	list = alloc_list();
435 	ABORT_ON(!list);
436 	err = parse_events_add_cache(list, &parse_state->idx, $1, $3, NULL, error, $4);
437 	parse_events_terms__delete($4);
438 	free($1);
439 	free($3);
440 	if (err) {
441 		free_list_evsel(list);
442 		YYABORT;
443 	}
444 	$$ = list;
445 }
446 |
447 PE_NAME_CACHE_TYPE opt_event_config
448 {
449 	struct parse_events_state *parse_state = _parse_state;
450 	struct parse_events_error *error = parse_state->error;
451 	struct list_head *list;
452 	int err;
453 
454 	list = alloc_list();
455 	ABORT_ON(!list);
456 	err = parse_events_add_cache(list, &parse_state->idx, $1, NULL, NULL, error, $2);
457 	parse_events_terms__delete($2);
458 	free($1);
459 	if (err) {
460 		free_list_evsel(list);
461 		YYABORT;
462 	}
463 	$$ = list;
464 }
465 
466 event_legacy_mem:
467 PE_PREFIX_MEM PE_VALUE '/' PE_VALUE ':' PE_MODIFIER_BP sep_dc
468 {
469 	struct parse_events_state *parse_state = _parse_state;
470 	struct list_head *list;
471 	int err;
472 
473 	list = alloc_list();
474 	ABORT_ON(!list);
475 	err = parse_events_add_breakpoint(list, &parse_state->idx,
476 					(void *) $2, $6, $4);
477 	free($6);
478 	if (err) {
479 		free(list);
480 		YYABORT;
481 	}
482 	$$ = list;
483 }
484 |
485 PE_PREFIX_MEM PE_VALUE '/' PE_VALUE sep_dc
486 {
487 	struct parse_events_state *parse_state = _parse_state;
488 	struct list_head *list;
489 
490 	list = alloc_list();
491 	ABORT_ON(!list);
492 	if (parse_events_add_breakpoint(list, &parse_state->idx,
493 						(void *) $2, NULL, $4)) {
494 		free(list);
495 		YYABORT;
496 	}
497 	$$ = list;
498 }
499 |
500 PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc
501 {
502 	struct parse_events_state *parse_state = _parse_state;
503 	struct list_head *list;
504 	int err;
505 
506 	list = alloc_list();
507 	ABORT_ON(!list);
508 	err = parse_events_add_breakpoint(list, &parse_state->idx,
509 					(void *) $2, $4, 0);
510 	free($4);
511 	if (err) {
512 		free(list);
513 		YYABORT;
514 	}
515 	$$ = list;
516 }
517 |
518 PE_PREFIX_MEM PE_VALUE sep_dc
519 {
520 	struct parse_events_state *parse_state = _parse_state;
521 	struct list_head *list;
522 
523 	list = alloc_list();
524 	ABORT_ON(!list);
525 	if (parse_events_add_breakpoint(list, &parse_state->idx,
526 						(void *) $2, NULL, 0)) {
527 		free(list);
528 		YYABORT;
529 	}
530 	$$ = list;
531 }
532 
533 event_legacy_tracepoint:
534 tracepoint_name opt_event_config
535 {
536 	struct parse_events_state *parse_state = _parse_state;
537 	struct parse_events_error *error = parse_state->error;
538 	struct list_head *list;
539 	int err;
540 
541 	list = alloc_list();
542 	ABORT_ON(!list);
543 	if (error)
544 		error->idx = @1.first_column;
545 
546 	err = parse_events_add_tracepoint(list, &parse_state->idx, $1.sys, $1.event,
547 					error, $2);
548 
549 	parse_events_terms__delete($2);
550 	free($1.sys);
551 	free($1.event);
552 	if (err) {
553 		free(list);
554 		YYABORT;
555 	}
556 	$$ = list;
557 }
558 
559 tracepoint_name:
560 PE_NAME '-' PE_NAME ':' PE_NAME
561 {
562 	struct tracepoint_name tracepoint;
563 
564 	ABORT_ON(asprintf(&tracepoint.sys, "%s-%s", $1, $3) < 0);
565 	tracepoint.event = $5;
566 	free($1);
567 	free($3);
568 	$$ = tracepoint;
569 }
570 |
571 PE_NAME ':' PE_NAME
572 {
573 	struct tracepoint_name tracepoint = {$1, $3};
574 
575 	$$ = tracepoint;
576 }
577 
578 event_legacy_numeric:
579 PE_VALUE ':' PE_VALUE opt_event_config
580 {
581 	struct list_head *list;
582 	int err;
583 
584 	list = alloc_list();
585 	ABORT_ON(!list);
586 	err = parse_events_add_numeric(_parse_state, list, (u32)$1, $3, $4);
587 	parse_events_terms__delete($4);
588 	if (err) {
589 		free(list);
590 		YYABORT;
591 	}
592 	$$ = list;
593 }
594 
595 event_legacy_raw:
596 PE_RAW opt_event_config
597 {
598 	struct list_head *list;
599 	int err;
600 
601 	list = alloc_list();
602 	ABORT_ON(!list);
603 	err = parse_events_add_numeric(_parse_state, list, PERF_TYPE_RAW, $1, $2);
604 	parse_events_terms__delete($2);
605 	if (err) {
606 		free(list);
607 		YYABORT;
608 	}
609 	$$ = list;
610 }
611 
612 event_bpf_file:
613 PE_BPF_OBJECT opt_event_config
614 {
615 	struct parse_events_state *parse_state = _parse_state;
616 	struct list_head *list;
617 	int err;
618 
619 	list = alloc_list();
620 	ABORT_ON(!list);
621 	err = parse_events_load_bpf(parse_state, list, $1, false, $2);
622 	parse_events_terms__delete($2);
623 	free($1);
624 	if (err) {
625 		free(list);
626 		YYABORT;
627 	}
628 	$$ = list;
629 }
630 |
631 PE_BPF_SOURCE opt_event_config
632 {
633 	struct list_head *list;
634 	int err;
635 
636 	list = alloc_list();
637 	ABORT_ON(!list);
638 	err = parse_events_load_bpf(_parse_state, list, $1, true, $2);
639 	parse_events_terms__delete($2);
640 	if (err) {
641 		free(list);
642 		YYABORT;
643 	}
644 	$$ = list;
645 }
646 
647 opt_event_config:
648 '/' event_config '/'
649 {
650 	$$ = $2;
651 }
652 |
653 '/' '/'
654 {
655 	$$ = NULL;
656 }
657 |
658 {
659 	$$ = NULL;
660 }
661 
662 opt_pmu_config:
663 '/' event_config '/'
664 {
665 	$$ = $2;
666 }
667 |
668 '/' '/'
669 {
670 	$$ = NULL;
671 }
672 
673 start_terms: event_config
674 {
675 	struct parse_events_state *parse_state = _parse_state;
676 	if (parse_state->terms) {
677 		parse_events_terms__delete ($1);
678 		YYABORT;
679 	}
680 	parse_state->terms = $1;
681 }
682 
683 event_config:
684 event_config ',' event_term
685 {
686 	struct list_head *head = $1;
687 	struct parse_events_term *term = $3;
688 
689 	if (!head) {
690 		parse_events_term__delete(term);
691 		YYABORT;
692 	}
693 	list_add_tail(&term->list, head);
694 	$$ = $1;
695 }
696 |
697 event_term
698 {
699 	struct list_head *head = malloc(sizeof(*head));
700 	struct parse_events_term *term = $1;
701 
702 	ABORT_ON(!head);
703 	INIT_LIST_HEAD(head);
704 	list_add_tail(&term->list, head);
705 	$$ = head;
706 }
707 
708 event_term:
709 PE_NAME '=' PE_NAME
710 {
711 	struct parse_events_term *term;
712 
713 	if (parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
714 					$1, $3, &@1, &@3)) {
715 		free($1);
716 		free($3);
717 		YYABORT;
718 	}
719 	$$ = term;
720 }
721 |
722 PE_NAME '=' PE_VALUE
723 {
724 	struct parse_events_term *term;
725 
726 	if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
727 					$1, $3, false, &@1, &@3)) {
728 		free($1);
729 		YYABORT;
730 	}
731 	$$ = term;
732 }
733 |
734 PE_NAME '=' PE_VALUE_SYM_HW
735 {
736 	struct parse_events_term *term;
737 	int config = $3 & 255;
738 
739 	if (parse_events_term__sym_hw(&term, $1, config)) {
740 		free($1);
741 		YYABORT;
742 	}
743 	$$ = term;
744 }
745 |
746 PE_NAME
747 {
748 	struct parse_events_term *term;
749 
750 	if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
751 					$1, 1, true, &@1, NULL)) {
752 		free($1);
753 		YYABORT;
754 	}
755 	$$ = term;
756 }
757 |
758 PE_VALUE_SYM_HW
759 {
760 	struct parse_events_term *term;
761 	int config = $1 & 255;
762 
763 	ABORT_ON(parse_events_term__sym_hw(&term, NULL, config));
764 	$$ = term;
765 }
766 |
767 PE_TERM '=' PE_NAME
768 {
769 	struct parse_events_term *term;
770 
771 	if (parse_events_term__str(&term, (int)$1, NULL, $3, &@1, &@3)) {
772 		free($3);
773 		YYABORT;
774 	}
775 	$$ = term;
776 }
777 |
778 PE_TERM '=' PE_VALUE
779 {
780 	struct parse_events_term *term;
781 
782 	ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, $3, false, &@1, &@3));
783 	$$ = term;
784 }
785 |
786 PE_TERM
787 {
788 	struct parse_events_term *term;
789 
790 	ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, 1, true, &@1, NULL));
791 	$$ = term;
792 }
793 |
794 PE_NAME array '=' PE_NAME
795 {
796 	struct parse_events_term *term;
797 
798 	if (parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
799 					$1, $4, &@1, &@4)) {
800 		free($1);
801 		free($4);
802 		free($2.ranges);
803 		YYABORT;
804 	}
805 	term->array = $2;
806 	$$ = term;
807 }
808 |
809 PE_NAME array '=' PE_VALUE
810 {
811 	struct parse_events_term *term;
812 
813 	if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
814 					$1, $4, false, &@1, &@4)) {
815 		free($1);
816 		free($2.ranges);
817 		YYABORT;
818 	}
819 	term->array = $2;
820 	$$ = term;
821 }
822 |
823 PE_DRV_CFG_TERM
824 {
825 	struct parse_events_term *term;
826 	char *config = strdup($1);
827 
828 	ABORT_ON(!config);
829 	if (parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_DRV_CFG,
830 					config, $1, &@1, NULL)) {
831 		free($1);
832 		free(config);
833 		YYABORT;
834 	}
835 	$$ = term;
836 }
837 
838 array:
839 '[' array_terms ']'
840 {
841 	$$ = $2;
842 }
843 |
844 PE_ARRAY_ALL
845 {
846 	$$.nr_ranges = 0;
847 	$$.ranges = NULL;
848 }
849 
850 array_terms:
851 array_terms ',' array_term
852 {
853 	struct parse_events_array new_array;
854 
855 	new_array.nr_ranges = $1.nr_ranges + $3.nr_ranges;
856 	new_array.ranges = realloc($1.ranges,
857 				sizeof(new_array.ranges[0]) *
858 				new_array.nr_ranges);
859 	ABORT_ON(!new_array.ranges);
860 	memcpy(&new_array.ranges[$1.nr_ranges], $3.ranges,
861 	       $3.nr_ranges * sizeof(new_array.ranges[0]));
862 	free($3.ranges);
863 	$$ = new_array;
864 }
865 |
866 array_term
867 
868 array_term:
869 PE_VALUE
870 {
871 	struct parse_events_array array;
872 
873 	array.nr_ranges = 1;
874 	array.ranges = malloc(sizeof(array.ranges[0]));
875 	ABORT_ON(!array.ranges);
876 	array.ranges[0].start = $1;
877 	array.ranges[0].length = 1;
878 	$$ = array;
879 }
880 |
881 PE_VALUE PE_ARRAY_RANGE PE_VALUE
882 {
883 	struct parse_events_array array;
884 
885 	ABORT_ON($3 < $1);
886 	array.nr_ranges = 1;
887 	array.ranges = malloc(sizeof(array.ranges[0]));
888 	ABORT_ON(!array.ranges);
889 	array.ranges[0].start = $1;
890 	array.ranges[0].length = $3 - $1 + 1;
891 	$$ = array;
892 }
893 
894 sep_dc: ':' |
895 
896 sep_slash_slash_dc: '/' '/' | ':' |
897 
898 %%
899 
900 void parse_events_error(YYLTYPE *loc, void *parse_state,
901 			void *scanner __maybe_unused,
902 			char const *msg __maybe_unused)
903 {
904 	parse_events_evlist_error(parse_state, loc->last_column, "parser error");
905 }
906