1
2%option reentrant
3%option bison-bridge
4%option prefix="parse_events_"
5%option stack
6
7%{
8#include <errno.h>
9#include "../perf.h"
10#include "parse-events-bison.h"
11#include "parse-events.h"
12
13char *parse_events_get_text(yyscan_t yyscanner);
14YYSTYPE *parse_events_get_lval(yyscan_t yyscanner);
15
16static int __value(YYSTYPE *yylval, char *str, int base, int token)
17{
18	u64 num;
19
20	errno = 0;
21	num = strtoull(str, NULL, base);
22	if (errno)
23		return PE_ERROR;
24
25	yylval->num = num;
26	return token;
27}
28
29static int value(yyscan_t scanner, int base)
30{
31	YYSTYPE *yylval = parse_events_get_lval(scanner);
32	char *text = parse_events_get_text(scanner);
33
34	return __value(yylval, text, base, PE_VALUE);
35}
36
37static int raw(yyscan_t scanner)
38{
39	YYSTYPE *yylval = parse_events_get_lval(scanner);
40	char *text = parse_events_get_text(scanner);
41
42	return __value(yylval, text + 1, 16, PE_RAW);
43}
44
45static int str(yyscan_t scanner, int token)
46{
47	YYSTYPE *yylval = parse_events_get_lval(scanner);
48	char *text = parse_events_get_text(scanner);
49
50	yylval->str = strdup(text);
51	return token;
52}
53
54static int pmu_str_check(yyscan_t scanner)
55{
56	YYSTYPE *yylval = parse_events_get_lval(scanner);
57	char *text = parse_events_get_text(scanner);
58
59	yylval->str = strdup(text);
60	switch (perf_pmu__parse_check(text)) {
61		case PMU_EVENT_SYMBOL_PREFIX:
62			return PE_PMU_EVENT_PRE;
63		case PMU_EVENT_SYMBOL_SUFFIX:
64			return PE_PMU_EVENT_SUF;
65		case PMU_EVENT_SYMBOL:
66			return PE_KERNEL_PMU_EVENT;
67		default:
68			return PE_NAME;
69	}
70}
71
72static int sym(yyscan_t scanner, int type, int config)
73{
74	YYSTYPE *yylval = parse_events_get_lval(scanner);
75
76	yylval->num = (type << 16) + config;
77	return type == PERF_TYPE_HARDWARE ? PE_VALUE_SYM_HW : PE_VALUE_SYM_SW;
78}
79
80static int term(yyscan_t scanner, int type)
81{
82	YYSTYPE *yylval = parse_events_get_lval(scanner);
83
84	yylval->num = type;
85	return PE_TERM;
86}
87
88%}
89
90%x mem
91%s config
92%x event
93
94group		[^,{}/]*[{][^}]*[}][^,{}/]*
95event_pmu	[^,{}/]+[/][^/]*[/][^,{}/]*
96event		[^,{}/]+
97
98num_dec		[0-9]+
99num_hex		0x[a-fA-F0-9]+
100num_raw_hex	[a-fA-F0-9]+
101name		[a-zA-Z_*?][a-zA-Z0-9_*?]*
102name_minus	[a-zA-Z_*?][a-zA-Z0-9\-_*?]*
103/* If you add a modifier you need to update check_modifier() */
104modifier_event	[ukhpGHSDI]+
105modifier_bp	[rwx]{1,3}
106
107%%
108
109%{
110	{
111		int start_token;
112
113		start_token = parse_events_get_extra(yyscanner);
114
115		if (start_token == PE_START_TERMS)
116			BEGIN(config);
117		else if (start_token == PE_START_EVENTS)
118			BEGIN(event);
119
120		if (start_token) {
121			parse_events_set_extra(NULL, yyscanner);
122			return start_token;
123		}
124         }
125%}
126
127<event>{
128
129{group}		{
130			BEGIN(INITIAL); yyless(0);
131		}
132
133{event_pmu}	|
134{event}		{
135			str(yyscanner, PE_EVENT_NAME);
136			BEGIN(INITIAL); yyless(0);
137			return PE_EVENT_NAME;
138		}
139
140.		|
141<<EOF>>		{
142			BEGIN(INITIAL); yyless(0);
143		}
144
145}
146
147<config>{
148config			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); }
149config1			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); }
150config2			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); }
151name			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); }
152period			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); }
153branch_type		{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); }
154,			{ return ','; }
155"/"			{ BEGIN(INITIAL); return '/'; }
156{name_minus}		{ return str(yyscanner, PE_NAME); }
157}
158
159<mem>{
160{modifier_bp}		{ return str(yyscanner, PE_MODIFIER_BP); }
161:			{ return ':'; }
162"/"			{ return '/'; }
163{num_dec}		{ return value(yyscanner, 10); }
164{num_hex}		{ return value(yyscanner, 16); }
165	/*
166	 * We need to separate 'mem:' scanner part, in order to get specific
167	 * modifier bits parsed out. Otherwise we would need to handle PE_NAME
168	 * and we'd need to parse it manually. During the escape from <mem>
169	 * state we need to put the escaping char back, so we dont miss it.
170	 */
171.			{ unput(*yytext); BEGIN(INITIAL); }
172	/*
173	 * We destroy the scanner after reaching EOF,
174	 * but anyway just to be sure get back to INIT state.
175	 */
176<<EOF>>			{ BEGIN(INITIAL); }
177}
178
179cpu-cycles|cycles				{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); }
180stalled-cycles-frontend|idle-cycles-frontend	{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); }
181stalled-cycles-backend|idle-cycles-backend	{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); }
182instructions					{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); }
183cache-references				{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); }
184cache-misses					{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); }
185branch-instructions|branches			{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); }
186branch-misses					{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); }
187bus-cycles					{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); }
188ref-cycles					{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); }
189cpu-clock					{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); }
190task-clock					{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); }
191page-faults|faults				{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); }
192minor-faults					{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); }
193major-faults					{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); }
194context-switches|cs				{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); }
195cpu-migrations|migrations			{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); }
196alignment-faults				{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); }
197emulation-faults				{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); }
198dummy						{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); }
199
200	/*
201	 * We have to handle the kernel PMU event cycles-ct/cycles-t/mem-loads/mem-stores separately.
202	 * Because the prefix cycles is mixed up with cpu-cycles.
203	 * loads and stores are mixed up with cache event
204	 */
205cycles-ct					{ return str(yyscanner, PE_KERNEL_PMU_EVENT); }
206cycles-t					{ return str(yyscanner, PE_KERNEL_PMU_EVENT); }
207mem-loads					{ return str(yyscanner, PE_KERNEL_PMU_EVENT); }
208mem-stores					{ return str(yyscanner, PE_KERNEL_PMU_EVENT); }
209
210L1-dcache|l1-d|l1d|L1-data		|
211L1-icache|l1-i|l1i|L1-instruction	|
212LLC|L2					|
213dTLB|d-tlb|Data-TLB			|
214iTLB|i-tlb|Instruction-TLB		|
215branch|branches|bpu|btb|bpc		|
216node					{ return str(yyscanner, PE_NAME_CACHE_TYPE); }
217
218load|loads|read				|
219store|stores|write			|
220prefetch|prefetches			|
221speculative-read|speculative-load	|
222refs|Reference|ops|access		|
223misses|miss				{ return str(yyscanner, PE_NAME_CACHE_OP_RESULT); }
224
225mem:			{ BEGIN(mem); return PE_PREFIX_MEM; }
226r{num_raw_hex}		{ return raw(yyscanner); }
227{num_dec}		{ return value(yyscanner, 10); }
228{num_hex}		{ return value(yyscanner, 16); }
229
230{modifier_event}	{ return str(yyscanner, PE_MODIFIER_EVENT); }
231{name}			{ return pmu_str_check(yyscanner); }
232"/"			{ BEGIN(config); return '/'; }
233-			{ return '-'; }
234,			{ BEGIN(event); return ','; }
235:			{ return ':'; }
236"{"			{ BEGIN(event); return '{'; }
237"}"			{ return '}'; }
238=			{ return '='; }
239\n			{ }
240.			{ }
241
242%%
243
244int parse_events_wrap(void *scanner __maybe_unused)
245{
246	return 1;
247}
248