1%pure-parser
2%parse-param {void *_data}
3%parse-param {void *scanner}
4%lex-param {void* scanner}
5
6%{
7
8#define YYDEBUG 1
9
10#include <linux/compiler.h>
11#include <linux/list.h>
12#include "types.h"
13#include "util.h"
14#include "parse-events.h"
15#include "parse-events-bison.h"
16
17extern int parse_events_lex (YYSTYPE* lvalp, void* scanner);
18
19#define ABORT_ON(val) \
20do { \
21	if (val) \
22		YYABORT; \
23} while (0)
24
25#define ALLOC_LIST(list) \
26do { \
27	list = malloc(sizeof(*list)); \
28	ABORT_ON(!list);              \
29	INIT_LIST_HEAD(list);         \
30} while (0)
31
32static inc_group_count(struct list_head *list,
33		       struct parse_events_evlist *data)
34{
35	/* Count groups only have more than 1 members */
36	if (!list_is_last(list->next, list))
37		data->nr_groups++;
38}
39
40%}
41
42%token PE_START_EVENTS PE_START_TERMS
43%token PE_VALUE PE_VALUE_SYM_HW PE_VALUE_SYM_SW PE_RAW PE_TERM
44%token PE_EVENT_NAME
45%token PE_NAME
46%token PE_MODIFIER_EVENT PE_MODIFIER_BP
47%token PE_NAME_CACHE_TYPE PE_NAME_CACHE_OP_RESULT
48%token PE_PREFIX_MEM PE_PREFIX_RAW PE_PREFIX_GROUP
49%token PE_ERROR
50%type <num> PE_VALUE
51%type <num> PE_VALUE_SYM_HW
52%type <num> PE_VALUE_SYM_SW
53%type <num> PE_RAW
54%type <num> PE_TERM
55%type <str> PE_NAME
56%type <str> PE_NAME_CACHE_TYPE
57%type <str> PE_NAME_CACHE_OP_RESULT
58%type <str> PE_MODIFIER_EVENT
59%type <str> PE_MODIFIER_BP
60%type <str> PE_EVENT_NAME
61%type <num> value_sym
62%type <head> event_config
63%type <term> event_term
64%type <head> event_pmu
65%type <head> event_legacy_symbol
66%type <head> event_legacy_cache
67%type <head> event_legacy_mem
68%type <head> event_legacy_tracepoint
69%type <head> event_legacy_numeric
70%type <head> event_legacy_raw
71%type <head> event_def
72%type <head> event_mod
73%type <head> event_name
74%type <head> event
75%type <head> events
76%type <head> group_def
77%type <head> group
78%type <head> groups
79
80%union
81{
82	char *str;
83	u64 num;
84	struct list_head *head;
85	struct parse_events_term *term;
86}
87%%
88
89start:
90PE_START_EVENTS start_events
91|
92PE_START_TERMS  start_terms
93
94start_events: groups
95{
96	struct parse_events_evlist *data = _data;
97
98	parse_events_update_lists($1, &data->list);
99}
100
101groups:
102groups ',' group
103{
104	struct list_head *list  = $1;
105	struct list_head *group = $3;
106
107	parse_events_update_lists(group, list);
108	$$ = list;
109}
110|
111groups ',' event
112{
113	struct list_head *list  = $1;
114	struct list_head *event = $3;
115
116	parse_events_update_lists(event, list);
117	$$ = list;
118}
119|
120group
121|
122event
123
124group:
125group_def ':' PE_MODIFIER_EVENT
126{
127	struct list_head *list = $1;
128
129	ABORT_ON(parse_events__modifier_group(list, $3));
130	$$ = list;
131}
132|
133group_def
134
135group_def:
136PE_NAME '{' events '}'
137{
138	struct list_head *list = $3;
139
140	inc_group_count(list, _data);
141	parse_events__set_leader($1, list);
142	$$ = list;
143}
144|
145'{' events '}'
146{
147	struct list_head *list = $2;
148
149	inc_group_count(list, _data);
150	parse_events__set_leader(NULL, list);
151	$$ = list;
152}
153
154events:
155events ',' event
156{
157	struct list_head *event = $3;
158	struct list_head *list  = $1;
159
160	parse_events_update_lists(event, list);
161	$$ = list;
162}
163|
164event
165
166event: event_mod
167
168event_mod:
169event_name PE_MODIFIER_EVENT
170{
171	struct list_head *list = $1;
172
173	/*
174	 * Apply modifier on all events added by single event definition
175	 * (there could be more events added for multiple tracepoint
176	 * definitions via '*?'.
177	 */
178	ABORT_ON(parse_events__modifier_event(list, $2, false));
179	$$ = list;
180}
181|
182event_name
183
184event_name:
185PE_EVENT_NAME event_def
186{
187	ABORT_ON(parse_events_name($2, $1));
188	free($1);
189	$$ = $2;
190}
191|
192event_def
193
194event_def: event_pmu |
195	   event_legacy_symbol |
196	   event_legacy_cache sep_dc |
197	   event_legacy_mem |
198	   event_legacy_tracepoint sep_dc |
199	   event_legacy_numeric sep_dc |
200	   event_legacy_raw sep_dc
201
202event_pmu:
203PE_NAME '/' event_config '/'
204{
205	struct parse_events_evlist *data = _data;
206	struct list_head *list;
207
208	ALLOC_LIST(list);
209	ABORT_ON(parse_events_add_pmu(list, &data->idx, $1, $3));
210	parse_events__free_terms($3);
211	$$ = list;
212}
213
214value_sym:
215PE_VALUE_SYM_HW
216|
217PE_VALUE_SYM_SW
218
219event_legacy_symbol:
220value_sym '/' event_config '/'
221{
222	struct parse_events_evlist *data = _data;
223	struct list_head *list;
224	int type = $1 >> 16;
225	int config = $1 & 255;
226
227	ALLOC_LIST(list);
228	ABORT_ON(parse_events_add_numeric(list, &data->idx,
229					  type, config, $3));
230	parse_events__free_terms($3);
231	$$ = list;
232}
233|
234value_sym sep_slash_dc
235{
236	struct parse_events_evlist *data = _data;
237	struct list_head *list;
238	int type = $1 >> 16;
239	int config = $1 & 255;
240
241	ALLOC_LIST(list);
242	ABORT_ON(parse_events_add_numeric(list, &data->idx,
243					  type, config, NULL));
244	$$ = list;
245}
246
247event_legacy_cache:
248PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT
249{
250	struct parse_events_evlist *data = _data;
251	struct list_head *list;
252
253	ALLOC_LIST(list);
254	ABORT_ON(parse_events_add_cache(list, &data->idx, $1, $3, $5));
255	$$ = list;
256}
257|
258PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT
259{
260	struct parse_events_evlist *data = _data;
261	struct list_head *list;
262
263	ALLOC_LIST(list);
264	ABORT_ON(parse_events_add_cache(list, &data->idx, $1, $3, NULL));
265	$$ = list;
266}
267|
268PE_NAME_CACHE_TYPE
269{
270	struct parse_events_evlist *data = _data;
271	struct list_head *list;
272
273	ALLOC_LIST(list);
274	ABORT_ON(parse_events_add_cache(list, &data->idx, $1, NULL, NULL));
275	$$ = list;
276}
277
278event_legacy_mem:
279PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc
280{
281	struct parse_events_evlist *data = _data;
282	struct list_head *list;
283
284	ALLOC_LIST(list);
285	ABORT_ON(parse_events_add_breakpoint(list, &data->idx,
286					     (void *) $2, $4));
287	$$ = list;
288}
289|
290PE_PREFIX_MEM PE_VALUE sep_dc
291{
292	struct parse_events_evlist *data = _data;
293	struct list_head *list;
294
295	ALLOC_LIST(list);
296	ABORT_ON(parse_events_add_breakpoint(list, &data->idx,
297					     (void *) $2, NULL));
298	$$ = list;
299}
300
301event_legacy_tracepoint:
302PE_NAME ':' PE_NAME
303{
304	struct parse_events_evlist *data = _data;
305	struct list_head *list;
306
307	ALLOC_LIST(list);
308	ABORT_ON(parse_events_add_tracepoint(list, &data->idx, $1, $3));
309	$$ = list;
310}
311
312event_legacy_numeric:
313PE_VALUE ':' PE_VALUE
314{
315	struct parse_events_evlist *data = _data;
316	struct list_head *list;
317
318	ALLOC_LIST(list);
319	ABORT_ON(parse_events_add_numeric(list, &data->idx, (u32)$1, $3, NULL));
320	$$ = list;
321}
322
323event_legacy_raw:
324PE_RAW
325{
326	struct parse_events_evlist *data = _data;
327	struct list_head *list;
328
329	ALLOC_LIST(list);
330	ABORT_ON(parse_events_add_numeric(list, &data->idx,
331					  PERF_TYPE_RAW, $1, NULL));
332	$$ = list;
333}
334
335start_terms: event_config
336{
337	struct parse_events_terms *data = _data;
338	data->terms = $1;
339}
340
341event_config:
342event_config ',' event_term
343{
344	struct list_head *head = $1;
345	struct parse_events_term *term = $3;
346
347	ABORT_ON(!head);
348	list_add_tail(&term->list, head);
349	$$ = $1;
350}
351|
352event_term
353{
354	struct list_head *head = malloc(sizeof(*head));
355	struct parse_events_term *term = $1;
356
357	ABORT_ON(!head);
358	INIT_LIST_HEAD(head);
359	list_add_tail(&term->list, head);
360	$$ = head;
361}
362
363event_term:
364PE_NAME '=' PE_NAME
365{
366	struct parse_events_term *term;
367
368	ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
369					$1, $3));
370	$$ = term;
371}
372|
373PE_NAME '=' PE_VALUE
374{
375	struct parse_events_term *term;
376
377	ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
378					$1, $3));
379	$$ = term;
380}
381|
382PE_NAME '=' PE_VALUE_SYM_HW
383{
384	struct parse_events_term *term;
385	int config = $3 & 255;
386
387	ABORT_ON(parse_events_term__sym_hw(&term, $1, config));
388	$$ = term;
389}
390|
391PE_NAME
392{
393	struct parse_events_term *term;
394
395	ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
396					$1, 1));
397	$$ = term;
398}
399|
400PE_VALUE_SYM_HW
401{
402	struct parse_events_term *term;
403	int config = $1 & 255;
404
405	ABORT_ON(parse_events_term__sym_hw(&term, NULL, config));
406	$$ = term;
407}
408|
409PE_TERM '=' PE_NAME
410{
411	struct parse_events_term *term;
412
413	ABORT_ON(parse_events_term__str(&term, (int)$1, NULL, $3));
414	$$ = term;
415}
416|
417PE_TERM '=' PE_VALUE
418{
419	struct parse_events_term *term;
420
421	ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, $3));
422	$$ = term;
423}
424|
425PE_TERM
426{
427	struct parse_events_term *term;
428
429	ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, 1));
430	$$ = term;
431}
432
433sep_dc: ':' |
434
435sep_slash_dc: '/' | ':' |
436
437%%
438
439void parse_events_error(void *data __maybe_unused, void *scanner __maybe_unused,
440			char const *msg __maybe_unused)
441{
442}
443