1
  2%option prefix="parse_events_"
  3%option stack
  4
  5%{
  6#include <errno.h>
  7#include "../perf.h"
  8#include "parse-events-bison.h"
  9#include "parse-events.h"
 10
 11static int __value(char *str, int base, int token)
 12{
 13	long num;
 14
 15	errno = 0;
 16	num = strtoul(str, NULL, base);
 17	if (errno)
 18		return PE_ERROR;
 19
 20	parse_events_lval.num = num;
 21	return token;
 22}
 23
 24static int value(int base)
 25{
 26	return __value(parse_events_text, base, PE_VALUE);
 27}
 28
 29static int raw(void)
 30{
 31	return __value(parse_events_text + 1, 16, PE_RAW);
 32}
 33
 34static int str(int token)
 35{
 36	parse_events_lval.str = strdup(parse_events_text);
 37	return token;
 38}
 39
 40static int sym(int type, int config)
 41{
 42	parse_events_lval.num = (type << 16) + config;
 43	return PE_VALUE_SYM;
 44}
 45
 46static int term(int type)
 47{
 48	parse_events_lval.num = type;
 49	return PE_TERM;
 50}
 51
 52%}
 53
 54%x mem
 55
 56num_dec		[0-9]+
 57num_hex		0x[a-fA-F0-9]+
 58num_raw_hex	[a-fA-F0-9]+
 59name		[a-zA-Z_*?][a-zA-Z0-9_*?]*
 60modifier_event	[ukhpGH]{1,8}
 61modifier_bp	[rwx]
 62
 63%%
 64cpu-cycles|cycles				{ return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); }
 65stalled-cycles-frontend|idle-cycles-frontend	{ return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); }
 66stalled-cycles-backend|idle-cycles-backend	{ return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); }
 67instructions					{ return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); }
 68cache-references				{ return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); }
 69cache-misses					{ return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); }
 70branch-instructions|branches			{ return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); }
 71branch-misses					{ return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); }
 72bus-cycles					{ return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); }
 73ref-cycles					{ return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); }
 74cpu-clock					{ return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); }
 75task-clock					{ return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); }
 76page-faults|faults				{ return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); }
 77minor-faults					{ return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); }
 78major-faults					{ return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); }
 79context-switches|cs				{ return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); }
 80cpu-migrations|migrations			{ return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); }
 81alignment-faults				{ return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); }
 82emulation-faults				{ return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); }
 83
 84L1-dcache|l1-d|l1d|L1-data		|
 85L1-icache|l1-i|l1i|L1-instruction	|
 86LLC|L2					|
 87dTLB|d-tlb|Data-TLB			|
 88iTLB|i-tlb|Instruction-TLB		|
 89branch|branches|bpu|btb|bpc		|
 90node					{ return str(PE_NAME_CACHE_TYPE); }
 91
 92load|loads|read				|
 93store|stores|write			|
 94prefetch|prefetches			|
 95speculative-read|speculative-load	|
 96refs|Reference|ops|access		|
 97misses|miss				{ return str(PE_NAME_CACHE_OP_RESULT); }
 98
 99	/*
100	 * These are event config hardcoded term names to be specified
101	 * within xxx/.../ syntax. So far we dont clash with other names,
102	 * so we can put them here directly. In case the we have a conflict
103	 * in future, this needs to go into '//' condition block.
104	 */
105config			{ return term(PARSE_EVENTS__TERM_TYPE_CONFIG); }
106config1			{ return term(PARSE_EVENTS__TERM_TYPE_CONFIG1); }
107config2			{ return term(PARSE_EVENTS__TERM_TYPE_CONFIG2); }
108name			{ return term(PARSE_EVENTS__TERM_TYPE_NAME); }
109period			{ return term(PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); }
110branch_type		{ return term(PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); }
111
112mem:			{ BEGIN(mem); return PE_PREFIX_MEM; }
113r{num_raw_hex}		{ return raw(); }
114{num_dec}		{ return value(10); }
115{num_hex}		{ return value(16); }
116
117{modifier_event}	{ return str(PE_MODIFIER_EVENT); }
118{name}			{ return str(PE_NAME); }
119"/"			{ return '/'; }
120-			{ return '-'; }
121,			{ return ','; }
122:			{ return ':'; }
123=			{ return '='; }
124
125<mem>{
126{modifier_bp}		{ return str(PE_MODIFIER_BP); }
127:			{ return ':'; }
128{num_dec}		{ return value(10); }
129{num_hex}		{ return value(16); }
130	/*
131	 * We need to separate 'mem:' scanner part, in order to get specific
132	 * modifier bits parsed out. Otherwise we would need to handle PE_NAME
133	 * and we'd need to parse it manually. During the escape from <mem>
134	 * state we need to put the escaping char back, so we dont miss it.
135	 */
136.			{ unput(*parse_events_text); BEGIN(INITIAL); }
137	/*
138	 * We destroy the scanner after reaching EOF,
139	 * but anyway just to be sure get back to INIT state.
140	 */
141<<EOF>>			{ BEGIN(INITIAL); }
142}
143
144%%
145
146int parse_events_wrap(void)
147{
148	return 1;
149}