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 15 char *parse_events_get_text(yyscan_t yyscanner); 16 YYSTYPE *parse_events_get_lval(yyscan_t yyscanner); 17 18 static 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 31 static 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 39 static 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 47 static 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) \ 57 do { \ 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 68 static 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 86 static 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 94 static 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 \ 103 do { \ 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 114 115 group [^,{}/]*[{][^}]*[}][^,{}/]* 116 event_pmu [^,{}/]+[/][^/]*[/][^,{}/]* 117 event [^,{}/]+ 118 119 num_dec [0-9]+ 120 num_hex 0x[a-fA-F0-9]+ 121 num_raw_hex [a-fA-F0-9]+ 122 name [a-zA-Z_*?][a-zA-Z0-9_*?]* 123 name_minus [a-zA-Z_*?][a-zA-Z0-9\-_*?]* 124 /* If you add a modifier you need to update check_modifier() */ 125 modifier_event [ukhpGHSDI]+ 126 modifier_bp [rwx]{1,3} 127 128 %% 129 130 %{ 131 { 132 int start_token; 133 134 start_token = parse_events_get_extra(yyscanner); 135 136 if (start_token == PE_START_TERMS) 137 BEGIN(config); 138 else if (start_token == PE_START_EVENTS) 139 BEGIN(event); 140 141 if (start_token) { 142 parse_events_set_extra(NULL, yyscanner); 143 /* 144 * The flex parser does not init locations variable 145 * via the scan_string interface, so we need do the 146 * init in here. 147 */ 148 yycolumn = 0; 149 return start_token; 150 } 151 } 152 %} 153 154 <event>{ 155 156 {group} { 157 BEGIN(INITIAL); 158 REWIND(0); 159 } 160 161 {event_pmu} | 162 {event} { 163 BEGIN(INITIAL); 164 REWIND(1); 165 return PE_EVENT_NAME; 166 } 167 168 . | 169 <<EOF>> { 170 BEGIN(INITIAL); 171 REWIND(0); 172 } 173 174 } 175 176 <config>{ 177 /* 178 * Please update formats_error_string any time 179 * new static term is added. 180 */ 181 config { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); } 182 config1 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); } 183 config2 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); } 184 name { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); } 185 period { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); } 186 branch_type { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); } 187 , { return ','; } 188 "/" { BEGIN(INITIAL); return '/'; } 189 {name_minus} { return str(yyscanner, PE_NAME); } 190 } 191 192 <mem>{ 193 {modifier_bp} { return str(yyscanner, PE_MODIFIER_BP); } 194 : { return ':'; } 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 cpu-cycles|cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); } 213 stalled-cycles-frontend|idle-cycles-frontend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); } 214 stalled-cycles-backend|idle-cycles-backend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); } 215 instructions { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); } 216 cache-references { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); } 217 cache-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); } 218 branch-instructions|branches { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); } 219 branch-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); } 220 bus-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); } 221 ref-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); } 222 cpu-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); } 223 task-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); } 224 page-faults|faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); } 225 minor-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); } 226 major-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); } 227 context-switches|cs { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); } 228 cpu-migrations|migrations { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); } 229 alignment-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); } 230 emulation-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); } 231 dummy { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); } 232 233 /* 234 * We have to handle the kernel PMU event cycles-ct/cycles-t/mem-loads/mem-stores separately. 235 * Because the prefix cycles is mixed up with cpu-cycles. 236 * loads and stores are mixed up with cache event 237 */ 238 cycles-ct { return str(yyscanner, PE_KERNEL_PMU_EVENT); } 239 cycles-t { return str(yyscanner, PE_KERNEL_PMU_EVENT); } 240 mem-loads { return str(yyscanner, PE_KERNEL_PMU_EVENT); } 241 mem-stores { return str(yyscanner, PE_KERNEL_PMU_EVENT); } 242 243 L1-dcache|l1-d|l1d|L1-data | 244 L1-icache|l1-i|l1i|L1-instruction | 245 LLC|L2 | 246 dTLB|d-tlb|Data-TLB | 247 iTLB|i-tlb|Instruction-TLB | 248 branch|branches|bpu|btb|bpc | 249 node { return str(yyscanner, PE_NAME_CACHE_TYPE); } 250 251 load|loads|read | 252 store|stores|write | 253 prefetch|prefetches | 254 speculative-read|speculative-load | 255 refs|Reference|ops|access | 256 misses|miss { return str(yyscanner, PE_NAME_CACHE_OP_RESULT); } 257 258 mem: { BEGIN(mem); return PE_PREFIX_MEM; } 259 r{num_raw_hex} { return raw(yyscanner); } 260 {num_dec} { return value(yyscanner, 10); } 261 {num_hex} { return value(yyscanner, 16); } 262 263 {modifier_event} { return str(yyscanner, PE_MODIFIER_EVENT); } 264 {name} { return pmu_str_check(yyscanner); } 265 "/" { BEGIN(config); return '/'; } 266 - { return '-'; } 267 , { BEGIN(event); return ','; } 268 : { return ':'; } 269 "{" { BEGIN(event); return '{'; } 270 "}" { return '}'; } 271 = { return '='; } 272 \n { } 273 . { } 274 275 %% 276 277 int parse_events_wrap(void *scanner __maybe_unused) 278 { 279 return 1; 280 } 281