1 2%option reentrant 3%option bison-bridge 4%option prefix="parse_events_" 5%option stack 6%option bison-locations 7%option yylineno 8%option reject 9 10%{ 11#include <errno.h> 12#include <sys/types.h> 13#include <sys/stat.h> 14#include <unistd.h> 15#include "parse-events.h" 16#include "parse-events-bison.h" 17#include "evsel.h" 18 19char *parse_events_get_text(yyscan_t yyscanner); 20YYSTYPE *parse_events_get_lval(yyscan_t yyscanner); 21 22static int __value(YYSTYPE *yylval, char *str, int base, int token) 23{ 24 u64 num; 25 26 errno = 0; 27 num = strtoull(str, NULL, base); 28 if (errno) 29 return PE_ERROR; 30 31 yylval->num = num; 32 return token; 33} 34 35static int value(yyscan_t scanner, int base) 36{ 37 YYSTYPE *yylval = parse_events_get_lval(scanner); 38 char *text = parse_events_get_text(scanner); 39 40 return __value(yylval, text, base, PE_VALUE); 41} 42 43static int str(yyscan_t scanner, int token) 44{ 45 YYSTYPE *yylval = parse_events_get_lval(scanner); 46 char *text = parse_events_get_text(scanner); 47 48 if (text[0] != '\'') { 49 yylval->str = strdup(text); 50 } else { 51 /* 52 * If a text tag specified on the command line 53 * contains opening single quite ' then it is 54 * expected that the tag ends with single quote 55 * as well, like this: 56 * name=\'CPU_CLK_UNHALTED.THREAD:cmask=1\' 57 * quotes need to be escaped to bypass shell 58 * processing. 59 */ 60 yylval->str = strndup(&text[1], strlen(text) - 2); 61 } 62 63 return token; 64} 65 66static int lc_str(yyscan_t scanner, const struct parse_events_state *state) 67{ 68 return str(scanner, state->match_legacy_cache_terms ? PE_LEGACY_CACHE : PE_NAME); 69} 70 71/* 72 * This function is called when the parser gets two kind of input: 73 * 74 * @cfg1 or @cfg2=config 75 * 76 * The leading '@' is stripped off before 'cfg1' and 'cfg2=config' are given to 77 * bison. In the latter case it is necessary to keep the string intact so that 78 * the PMU kernel driver can determine what configurable is associated to 79 * 'config'. 80 */ 81static int drv_str(yyscan_t scanner, int token) 82{ 83 YYSTYPE *yylval = parse_events_get_lval(scanner); 84 char *text = parse_events_get_text(scanner); 85 86 /* Strip off the '@' */ 87 yylval->str = strdup(text + 1); 88 return token; 89} 90 91#define REWIND(__alloc) \ 92do { \ 93 YYSTYPE *__yylval = parse_events_get_lval(yyscanner); \ 94 char *text = parse_events_get_text(yyscanner); \ 95 \ 96 if (__alloc) \ 97 __yylval->str = strdup(text); \ 98 \ 99 yycolumn -= strlen(text); \ 100 yyless(0); \ 101} while (0) 102 103static int sym(yyscan_t scanner, int type, int config) 104{ 105 YYSTYPE *yylval = parse_events_get_lval(scanner); 106 107 yylval->num = (type << 16) + config; 108 return type == PERF_TYPE_HARDWARE ? PE_VALUE_SYM_HW : PE_VALUE_SYM_SW; 109} 110 111static int tool(yyscan_t scanner, enum perf_tool_event event) 112{ 113 YYSTYPE *yylval = parse_events_get_lval(scanner); 114 115 yylval->num = event; 116 return PE_VALUE_SYM_TOOL; 117} 118 119static int term(yyscan_t scanner, enum parse_events__term_type type) 120{ 121 YYSTYPE *yylval = parse_events_get_lval(scanner); 122 123 yylval->term_type = type; 124 return PE_TERM; 125} 126 127static int hw_term(yyscan_t scanner, int config) 128{ 129 YYSTYPE *yylval = parse_events_get_lval(scanner); 130 char *text = parse_events_get_text(scanner); 131 132 yylval->hardware_term.str = strdup(text); 133 yylval->hardware_term.num = PERF_TYPE_HARDWARE + config; 134 return PE_TERM_HW; 135} 136 137#define YY_USER_ACTION \ 138do { \ 139 yylloc->last_column = yylloc->first_column; \ 140 yylloc->first_column = yycolumn; \ 141 yycolumn += yyleng; \ 142} while (0); 143 144#define USER_REJECT \ 145 yycolumn -= yyleng; \ 146 REJECT 147 148%} 149 150%x mem 151%s config 152%x event 153 154group [^,{}/]*[{][^}]*[}][^,{}/]* 155event_pmu [^,{}/]+[/][^/]*[/][^,{}/]* 156event [^,{}/]+ 157 158num_dec [0-9]+ 159num_hex 0x[a-fA-F0-9]{1,16} 160num_raw_hex [a-fA-F0-9]{1,16} 161name [a-zA-Z_*?\[\]][a-zA-Z0-9_*?.\[\]!\-]* 162name_tag [\'][a-zA-Z_*?\[\]][a-zA-Z0-9_*?\-,\.\[\]:=]*[\'] 163name_minus [a-zA-Z_*?][a-zA-Z0-9\-_*?.:]* 164drv_cfg_term [a-zA-Z0-9_\.]+(=[a-zA-Z0-9_*?\.:]+)? 165/* 166 * If you add a modifier you need to update check_modifier(). 167 * Also, the letters in modifier_event must not be in modifier_bp. 168 */ 169modifier_event [ukhpPGHSDIWeb]+ 170modifier_bp [rwx]{1,3} 171lc_type (L1-dcache|l1-d|l1d|L1-data|L1-icache|l1-i|l1i|L1-instruction|LLC|L2|dTLB|d-tlb|Data-TLB|iTLB|i-tlb|Instruction-TLB|branch|branches|bpu|btb|bpc|node) 172lc_op_result (load|loads|read|store|stores|write|prefetch|prefetches|speculative-read|speculative-load|refs|Reference|ops|access|misses|miss) 173digit [0-9] 174non_digit [^0-9] 175 176%% 177 178%{ 179 struct parse_events_state *_parse_state = parse_events_get_extra(yyscanner); 180 { 181 int start_token = _parse_state->stoken; 182 183 if (start_token == PE_START_TERMS) 184 BEGIN(config); 185 else if (start_token == PE_START_EVENTS) 186 BEGIN(event); 187 188 if (start_token) { 189 _parse_state->stoken = 0; 190 /* 191 * The flex parser does not init locations variable 192 * via the scan_string interface, so we need do the 193 * init in here. 194 */ 195 yycolumn = 0; 196 return start_token; 197 } 198 } 199%} 200 201<event>{ 202 203{group} { 204 BEGIN(INITIAL); 205 REWIND(0); 206 } 207 208{event_pmu} | 209{event} { 210 BEGIN(INITIAL); 211 REWIND(1); 212 return PE_EVENT_NAME; 213 } 214 215<<EOF>> { 216 BEGIN(INITIAL); 217 REWIND(0); 218 } 219, { 220 return ','; 221 } 222} 223 224<config>{ 225 /* 226 * Please update config_term_names when new static term is added. 227 */ 228config { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); } 229config1 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); } 230config2 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); } 231config3 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG3); } 232name { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); } 233period { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); } 234freq { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ); } 235branch_type { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); } 236time { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_TIME); } 237call-graph { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CALLGRAPH); } 238stack-size { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_STACKSIZE); } 239max-stack { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_MAX_STACK); } 240nr { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_MAX_EVENTS); } 241inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_INHERIT); } 242no-inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOINHERIT); } 243overwrite { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_OVERWRITE); } 244no-overwrite { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOOVERWRITE); } 245percore { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_PERCORE); } 246aux-output { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT); } 247aux-sample-size { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE); } 248metric-id { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_METRIC_ID); } 249cpu-cycles|cycles { return hw_term(yyscanner, PERF_COUNT_HW_CPU_CYCLES); } 250stalled-cycles-frontend|idle-cycles-frontend { return hw_term(yyscanner, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); } 251stalled-cycles-backend|idle-cycles-backend { return hw_term(yyscanner, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); } 252instructions { return hw_term(yyscanner, PERF_COUNT_HW_INSTRUCTIONS); } 253cache-references { return hw_term(yyscanner, PERF_COUNT_HW_CACHE_REFERENCES); } 254cache-misses { return hw_term(yyscanner, PERF_COUNT_HW_CACHE_MISSES); } 255branch-instructions|branches { return hw_term(yyscanner, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); } 256branch-misses { return hw_term(yyscanner, PERF_COUNT_HW_BRANCH_MISSES); } 257bus-cycles { return hw_term(yyscanner, PERF_COUNT_HW_BUS_CYCLES); } 258ref-cycles { return hw_term(yyscanner, PERF_COUNT_HW_REF_CPU_CYCLES); } 259r{num_raw_hex} { return str(yyscanner, PE_RAW); } 260r0x{num_raw_hex} { return str(yyscanner, PE_RAW); } 261, { return ','; } 262"/" { BEGIN(INITIAL); return '/'; } 263{lc_type} { return lc_str(yyscanner, _parse_state); } 264{lc_type}-{lc_op_result} { return lc_str(yyscanner, _parse_state); } 265{lc_type}-{lc_op_result}-{lc_op_result} { return lc_str(yyscanner, _parse_state); } 266{name_minus} { return str(yyscanner, PE_NAME); } 267@{drv_cfg_term} { return drv_str(yyscanner, PE_DRV_CFG_TERM); } 268} 269 270<mem>{ 271{modifier_bp} { return str(yyscanner, PE_MODIFIER_BP); } 272 /* 273 * The colon before memory access modifiers can get mixed up with the 274 * colon before event modifiers. Fortunately none of the option letters 275 * are the same, so trailing context can be used disambiguate the two 276 * cases. 277 */ 278":"/{modifier_bp} { return PE_BP_COLON; } 279 /* 280 * The slash before memory length can get mixed up with the slash before 281 * config terms. Fortunately config terms do not start with a numeric 282 * digit, so trailing context can be used disambiguate the two cases. 283 */ 284"/"/{digit} { return PE_BP_SLASH; } 285"/"/{non_digit} { BEGIN(config); return '/'; } 286{num_dec} { return value(yyscanner, 10); } 287{num_hex} { return value(yyscanner, 16); } 288 /* 289 * We need to separate 'mem:' scanner part, in order to get specific 290 * modifier bits parsed out. Otherwise we would need to handle PE_NAME 291 * and we'd need to parse it manually. During the escape from <mem> 292 * state we need to put the escaping char back, so we dont miss it. 293 */ 294. { unput(*yytext); BEGIN(INITIAL); } 295 /* 296 * We destroy the scanner after reaching EOF, 297 * but anyway just to be sure get back to INIT state. 298 */ 299<<EOF>> { BEGIN(INITIAL); } 300} 301 302cpu-cycles|cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); } 303stalled-cycles-frontend|idle-cycles-frontend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); } 304stalled-cycles-backend|idle-cycles-backend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); } 305instructions { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); } 306cache-references { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); } 307cache-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); } 308branch-instructions|branches { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); } 309branch-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); } 310bus-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); } 311ref-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); } 312cpu-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); } 313task-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); } 314page-faults|faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); } 315minor-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); } 316major-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); } 317context-switches|cs { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); } 318cpu-migrations|migrations { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); } 319alignment-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); } 320emulation-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); } 321dummy { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); } 322duration_time { return tool(yyscanner, PERF_TOOL_DURATION_TIME); } 323user_time { return tool(yyscanner, PERF_TOOL_USER_TIME); } 324system_time { return tool(yyscanner, PERF_TOOL_SYSTEM_TIME); } 325bpf-output { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_BPF_OUTPUT); } 326cgroup-switches { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CGROUP_SWITCHES); } 327 328{lc_type} { return str(yyscanner, PE_LEGACY_CACHE); } 329{lc_type}-{lc_op_result} { return str(yyscanner, PE_LEGACY_CACHE); } 330{lc_type}-{lc_op_result}-{lc_op_result} { return str(yyscanner, PE_LEGACY_CACHE); } 331mem: { BEGIN(mem); return PE_PREFIX_MEM; } 332r{num_raw_hex} { return str(yyscanner, PE_RAW); } 333{num_dec} { return value(yyscanner, 10); } 334{num_hex} { return value(yyscanner, 16); } 335 336{modifier_event} { return str(yyscanner, PE_MODIFIER_EVENT); } 337{name} { return str(yyscanner, PE_NAME); } 338{name_tag} { return str(yyscanner, PE_NAME); } 339"/" { BEGIN(config); return '/'; } 340, { BEGIN(event); return ','; } 341: { return ':'; } 342"{" { BEGIN(event); return '{'; } 343"}" { return '}'; } 344= { return '='; } 345\n { } 346. { } 347 348%% 349 350int parse_events_wrap(void *scanner __maybe_unused) 351{ 352 return 1; 353} 354