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 sym(yyscan_t scanner, int type, int config)
55{
56	YYSTYPE *yylval = parse_events_get_lval(scanner);
57
58	yylval->num = (type << 16) + config;
59	return type == PERF_TYPE_HARDWARE ? PE_VALUE_SYM_HW : PE_VALUE_SYM_SW;
60}
61
62static int term(yyscan_t scanner, int type)
63{
64	YYSTYPE *yylval = parse_events_get_lval(scanner);
65
66	yylval->num = type;
67	return PE_TERM;
68}
69
70%}
71
72%x mem
73%s config
74%x event
75
76group		[^,{}/]*[{][^}]*[}][^,{}/]*
77event_pmu	[^,{}/]+[/][^/]*[/][^,{}/]*
78event		[^,{}/]+
79
80num_dec		[0-9]+
81num_hex		0x[a-fA-F0-9]+
82num_raw_hex	[a-fA-F0-9]+
83name		[a-zA-Z_*?][a-zA-Z0-9_*?]*
84name_minus	[a-zA-Z_*?][a-zA-Z0-9\-_*?]*
85/* If you add a modifier you need to update check_modifier() */
86modifier_event	[ukhpGHSD]+
87modifier_bp	[rwx]{1,3}
88
89%%
90
91%{
92	{
93		int start_token;
94
95		start_token = parse_events_get_extra(yyscanner);
96
97		if (start_token == PE_START_TERMS)
98			BEGIN(config);
99		else if (start_token == PE_START_EVENTS)
100			BEGIN(event);
101
102		if (start_token) {
103			parse_events_set_extra(NULL, yyscanner);
104			return start_token;
105		}
106         }
107%}
108
109<event>{
110
111{group}		{
112			BEGIN(INITIAL); yyless(0);
113		}
114
115{event_pmu}	|
116{event}		{
117			str(yyscanner, PE_EVENT_NAME);
118			BEGIN(INITIAL); yyless(0);
119			return PE_EVENT_NAME;
120		}
121
122.		|
123<<EOF>>		{
124			BEGIN(INITIAL); yyless(0);
125		}
126
127}
128
129cpu-cycles|cycles				{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); }
130stalled-cycles-frontend|idle-cycles-frontend	{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); }
131stalled-cycles-backend|idle-cycles-backend	{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); }
132instructions					{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); }
133cache-references				{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); }
134cache-misses					{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); }
135branch-instructions|branches			{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); }
136branch-misses					{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); }
137bus-cycles					{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); }
138ref-cycles					{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); }
139cpu-clock					{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); }
140task-clock					{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); }
141page-faults|faults				{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); }
142minor-faults					{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); }
143major-faults					{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); }
144context-switches|cs				{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); }
145cpu-migrations|migrations			{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); }
146alignment-faults				{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); }
147emulation-faults				{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); }
148dummy						{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); }
149
150L1-dcache|l1-d|l1d|L1-data		|
151L1-icache|l1-i|l1i|L1-instruction	|
152LLC|L2					|
153dTLB|d-tlb|Data-TLB			|
154iTLB|i-tlb|Instruction-TLB		|
155branch|branches|bpu|btb|bpc		|
156node					{ return str(yyscanner, PE_NAME_CACHE_TYPE); }
157
158load|loads|read				|
159store|stores|write			|
160prefetch|prefetches			|
161speculative-read|speculative-load	|
162refs|Reference|ops|access		|
163misses|miss				{ return str(yyscanner, PE_NAME_CACHE_OP_RESULT); }
164
165<config>{
166config			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); }
167config1			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); }
168config2			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); }
169name			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); }
170period			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); }
171branch_type		{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); }
172,			{ return ','; }
173"/"			{ BEGIN(INITIAL); return '/'; }
174{name_minus}		{ return str(yyscanner, PE_NAME); }
175}
176
177mem:			{ BEGIN(mem); return PE_PREFIX_MEM; }
178r{num_raw_hex}		{ return raw(yyscanner); }
179{num_dec}		{ return value(yyscanner, 10); }
180{num_hex}		{ return value(yyscanner, 16); }
181
182{modifier_event}	{ return str(yyscanner, PE_MODIFIER_EVENT); }
183{name}			{ return str(yyscanner, PE_NAME); }
184"/"			{ BEGIN(config); return '/'; }
185-			{ return '-'; }
186,			{ BEGIN(event); return ','; }
187:			{ return ':'; }
188"{"			{ BEGIN(event); return '{'; }
189"}"			{ return '}'; }
190=			{ return '='; }
191\n			{ }
192
193<mem>{
194{modifier_bp}		{ return str(yyscanner, PE_MODIFIER_BP); }
195:			{ return ':'; }
196{num_dec}		{ return value(yyscanner, 10); }
197{num_hex}		{ return value(yyscanner, 16); }
198	/*
199	 * We need to separate 'mem:' scanner part, in order to get specific
200	 * modifier bits parsed out. Otherwise we would need to handle PE_NAME
201	 * and we'd need to parse it manually. During the escape from <mem>
202	 * state we need to put the escaping char back, so we dont miss it.
203	 */
204.			{ unput(*yytext); BEGIN(INITIAL); }
205	/*
206	 * We destroy the scanner after reaching EOF,
207	 * but anyway just to be sure get back to INIT state.
208	 */
209<<EOF>>			{ BEGIN(INITIAL); }
210}
211
212%%
213
214int parse_events_wrap(void *scanner __maybe_unused)
215{
216	return 1;
217}
218