1 2%option reentrant 3%option bison-bridge 4%option prefix="parse_events_" 5%option stack 6%option bison-locations 7%option yylineno 8 9%{ 10#include <errno.h> 11#include "../perf.h" 12#include "parse-events-bison.h" 13#include "parse-events.h" 14 15char *parse_events_get_text(yyscan_t yyscanner); 16YYSTYPE *parse_events_get_lval(yyscan_t yyscanner); 17 18static int __value(YYSTYPE *yylval, char *str, int base, int token) 19{ 20 u64 num; 21 22 errno = 0; 23 num = strtoull(str, NULL, base); 24 if (errno) 25 return PE_ERROR; 26 27 yylval->num = num; 28 return token; 29} 30 31static int value(yyscan_t scanner, int base) 32{ 33 YYSTYPE *yylval = parse_events_get_lval(scanner); 34 char *text = parse_events_get_text(scanner); 35 36 return __value(yylval, text, base, PE_VALUE); 37} 38 39static int raw(yyscan_t scanner) 40{ 41 YYSTYPE *yylval = parse_events_get_lval(scanner); 42 char *text = parse_events_get_text(scanner); 43 44 return __value(yylval, text + 1, 16, PE_RAW); 45} 46 47static int str(yyscan_t scanner, int token) 48{ 49 YYSTYPE *yylval = parse_events_get_lval(scanner); 50 char *text = parse_events_get_text(scanner); 51 52 yylval->str = strdup(text); 53 return token; 54} 55 56#define REWIND(__alloc) \ 57do { \ 58 YYSTYPE *__yylval = parse_events_get_lval(yyscanner); \ 59 char *text = parse_events_get_text(yyscanner); \ 60 \ 61 if (__alloc) \ 62 __yylval->str = strdup(text); \ 63 \ 64 yycolumn -= strlen(text); \ 65 yyless(0); \ 66} while (0) 67 68static int pmu_str_check(yyscan_t scanner) 69{ 70 YYSTYPE *yylval = parse_events_get_lval(scanner); 71 char *text = parse_events_get_text(scanner); 72 73 yylval->str = strdup(text); 74 switch (perf_pmu__parse_check(text)) { 75 case PMU_EVENT_SYMBOL_PREFIX: 76 return PE_PMU_EVENT_PRE; 77 case PMU_EVENT_SYMBOL_SUFFIX: 78 return PE_PMU_EVENT_SUF; 79 case PMU_EVENT_SYMBOL: 80 return PE_KERNEL_PMU_EVENT; 81 default: 82 return PE_NAME; 83 } 84} 85 86static int sym(yyscan_t scanner, int type, int config) 87{ 88 YYSTYPE *yylval = parse_events_get_lval(scanner); 89 90 yylval->num = (type << 16) + config; 91 return type == PERF_TYPE_HARDWARE ? PE_VALUE_SYM_HW : PE_VALUE_SYM_SW; 92} 93 94static int term(yyscan_t scanner, int type) 95{ 96 YYSTYPE *yylval = parse_events_get_lval(scanner); 97 98 yylval->num = type; 99 return PE_TERM; 100} 101 102#define YY_USER_ACTION \ 103do { \ 104 yylloc->last_column = yylloc->first_column; \ 105 yylloc->first_column = yycolumn; \ 106 yycolumn += yyleng; \ 107} while (0); 108 109%} 110 111%x mem 112%s config 113%x event 114 115group [^,{}/]*[{][^}]*[}][^,{}/]* 116event_pmu [^,{}/]+[/][^/]*[/][^,{}/]* 117event [^,{}/]+ 118bpf_object .*\.(o|bpf) 119bpf_source .*\.c 120 121num_dec [0-9]+ 122num_hex 0x[a-fA-F0-9]+ 123num_raw_hex [a-fA-F0-9]+ 124name [a-zA-Z_*?][a-zA-Z0-9_*?.]* 125name_minus [a-zA-Z_*?][a-zA-Z0-9\-_*?.]* 126/* If you add a modifier you need to update check_modifier() */ 127modifier_event [ukhpPGHSDI]+ 128modifier_bp [rwx]{1,3} 129 130%% 131 132%{ 133 { 134 int start_token; 135 136 start_token = parse_events_get_extra(yyscanner); 137 138 if (start_token == PE_START_TERMS) 139 BEGIN(config); 140 else if (start_token == PE_START_EVENTS) 141 BEGIN(event); 142 143 if (start_token) { 144 parse_events_set_extra(NULL, yyscanner); 145 /* 146 * The flex parser does not init locations variable 147 * via the scan_string interface, so we need do the 148 * init in here. 149 */ 150 yycolumn = 0; 151 return start_token; 152 } 153 } 154%} 155 156<event>{ 157 158{group} { 159 BEGIN(INITIAL); 160 REWIND(0); 161 } 162 163{event_pmu} | 164{bpf_object} | 165{bpf_source} | 166{event} { 167 BEGIN(INITIAL); 168 REWIND(1); 169 return PE_EVENT_NAME; 170 } 171 172<<EOF>> { 173 BEGIN(INITIAL); 174 REWIND(0); 175 } 176 177} 178 179<config>{ 180 /* 181 * Please update parse_events_formats_error_string any time 182 * new static term is added. 183 */ 184config { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); } 185config1 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); } 186config2 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); } 187name { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); } 188period { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); } 189freq { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ); } 190branch_type { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); } 191time { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_TIME); } 192call-graph { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CALLGRAPH); } 193stack-size { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_STACKSIZE); } 194inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_INHERIT); } 195no-inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOINHERIT); } 196, { return ','; } 197"/" { BEGIN(INITIAL); return '/'; } 198{name_minus} { return str(yyscanner, PE_NAME); } 199} 200 201<mem>{ 202{modifier_bp} { return str(yyscanner, PE_MODIFIER_BP); } 203: { return ':'; } 204"/" { return '/'; } 205{num_dec} { return value(yyscanner, 10); } 206{num_hex} { return value(yyscanner, 16); } 207 /* 208 * We need to separate 'mem:' scanner part, in order to get specific 209 * modifier bits parsed out. Otherwise we would need to handle PE_NAME 210 * and we'd need to parse it manually. During the escape from <mem> 211 * state we need to put the escaping char back, so we dont miss it. 212 */ 213. { unput(*yytext); BEGIN(INITIAL); } 214 /* 215 * We destroy the scanner after reaching EOF, 216 * but anyway just to be sure get back to INIT state. 217 */ 218<<EOF>> { BEGIN(INITIAL); } 219} 220 221cpu-cycles|cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); } 222stalled-cycles-frontend|idle-cycles-frontend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); } 223stalled-cycles-backend|idle-cycles-backend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); } 224instructions { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); } 225cache-references { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); } 226cache-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); } 227branch-instructions|branches { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); } 228branch-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); } 229bus-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); } 230ref-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); } 231cpu-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); } 232task-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); } 233page-faults|faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); } 234minor-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); } 235major-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); } 236context-switches|cs { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); } 237cpu-migrations|migrations { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); } 238alignment-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); } 239emulation-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); } 240dummy { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); } 241 242 /* 243 * We have to handle the kernel PMU event cycles-ct/cycles-t/mem-loads/mem-stores separately. 244 * Because the prefix cycles is mixed up with cpu-cycles. 245 * loads and stores are mixed up with cache event 246 */ 247cycles-ct { return str(yyscanner, PE_KERNEL_PMU_EVENT); } 248cycles-t { return str(yyscanner, PE_KERNEL_PMU_EVENT); } 249mem-loads { return str(yyscanner, PE_KERNEL_PMU_EVENT); } 250mem-stores { return str(yyscanner, PE_KERNEL_PMU_EVENT); } 251 252L1-dcache|l1-d|l1d|L1-data | 253L1-icache|l1-i|l1i|L1-instruction | 254LLC|L2 | 255dTLB|d-tlb|Data-TLB | 256iTLB|i-tlb|Instruction-TLB | 257branch|branches|bpu|btb|bpc | 258node { return str(yyscanner, PE_NAME_CACHE_TYPE); } 259 260load|loads|read | 261store|stores|write | 262prefetch|prefetches | 263speculative-read|speculative-load | 264refs|Reference|ops|access | 265misses|miss { return str(yyscanner, PE_NAME_CACHE_OP_RESULT); } 266 267mem: { BEGIN(mem); return PE_PREFIX_MEM; } 268r{num_raw_hex} { return raw(yyscanner); } 269{num_dec} { return value(yyscanner, 10); } 270{num_hex} { return value(yyscanner, 16); } 271 272{modifier_event} { return str(yyscanner, PE_MODIFIER_EVENT); } 273{bpf_object} { return str(yyscanner, PE_BPF_OBJECT); } 274{bpf_source} { return str(yyscanner, PE_BPF_SOURCE); } 275{name} { return pmu_str_check(yyscanner); } 276"/" { BEGIN(config); return '/'; } 277- { return '-'; } 278, { BEGIN(event); return ','; } 279: { return ':'; } 280"{" { BEGIN(event); return '{'; } 281"}" { return '}'; } 282= { return '='; } 283\n { } 284. { } 285 286%% 287 288int parse_events_wrap(void *scanner __maybe_unused) 289{ 290 return 1; 291} 292