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