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 13 char *parse_events_get_text(yyscan_t yyscanner); 14 YYSTYPE *parse_events_get_lval(yyscan_t yyscanner); 15 16 static 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 29 static 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 37 static 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 45 static 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 54 static 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 62 static 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 76 group [^,{}/]*[{][^}]*[}][^,{}/]* 77 event_pmu [^,{}/]+[/][^/]*[/][^,{}/]* 78 event [^,{}/]+ 79 80 num_dec [0-9]+ 81 num_hex 0x[a-fA-F0-9]+ 82 num_raw_hex [a-fA-F0-9]+ 83 name [a-zA-Z_*?][a-zA-Z0-9_*?]* 84 modifier_event [ukhpGH]{1,8} 85 modifier_bp [rwx]{1,3} 86 87 %% 88 89 %{ 90 { 91 int start_token; 92 93 start_token = parse_events_get_extra(yyscanner); 94 95 if (start_token == PE_START_TERMS) 96 BEGIN(config); 97 else if (start_token == PE_START_EVENTS) 98 BEGIN(event); 99 100 if (start_token) { 101 parse_events_set_extra(NULL, yyscanner); 102 return start_token; 103 } 104 } 105 %} 106 107 <event>{ 108 109 {group} { 110 BEGIN(INITIAL); yyless(0); 111 } 112 113 {event_pmu} | 114 {event} { 115 str(yyscanner, PE_EVENT_NAME); 116 BEGIN(INITIAL); yyless(0); 117 return PE_EVENT_NAME; 118 } 119 120 . | 121 <<EOF>> { 122 BEGIN(INITIAL); yyless(0); 123 } 124 125 } 126 127 cpu-cycles|cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); } 128 stalled-cycles-frontend|idle-cycles-frontend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); } 129 stalled-cycles-backend|idle-cycles-backend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); } 130 instructions { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); } 131 cache-references { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); } 132 cache-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); } 133 branch-instructions|branches { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); } 134 branch-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); } 135 bus-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); } 136 ref-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); } 137 cpu-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); } 138 task-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); } 139 page-faults|faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); } 140 minor-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); } 141 major-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); } 142 context-switches|cs { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); } 143 cpu-migrations|migrations { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); } 144 alignment-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); } 145 emulation-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); } 146 147 L1-dcache|l1-d|l1d|L1-data | 148 L1-icache|l1-i|l1i|L1-instruction | 149 LLC|L2 | 150 dTLB|d-tlb|Data-TLB | 151 iTLB|i-tlb|Instruction-TLB | 152 branch|branches|bpu|btb|bpc | 153 node { return str(yyscanner, PE_NAME_CACHE_TYPE); } 154 155 load|loads|read | 156 store|stores|write | 157 prefetch|prefetches | 158 speculative-read|speculative-load | 159 refs|Reference|ops|access | 160 misses|miss { return str(yyscanner, PE_NAME_CACHE_OP_RESULT); } 161 162 <config>{ 163 config { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); } 164 config1 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); } 165 config2 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); } 166 name { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); } 167 period { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); } 168 branch_type { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); } 169 , { return ','; } 170 "/" { BEGIN(INITIAL); return '/'; } 171 } 172 173 mem: { BEGIN(mem); return PE_PREFIX_MEM; } 174 r{num_raw_hex} { return raw(yyscanner); } 175 {num_dec} { return value(yyscanner, 10); } 176 {num_hex} { return value(yyscanner, 16); } 177 178 {modifier_event} { return str(yyscanner, PE_MODIFIER_EVENT); } 179 {name} { return str(yyscanner, PE_NAME); } 180 "/" { BEGIN(config); return '/'; } 181 - { return '-'; } 182 , { BEGIN(event); return ','; } 183 : { return ':'; } 184 "{" { BEGIN(event); return '{'; } 185 "}" { return '}'; } 186 = { return '='; } 187 \n { } 188 189 <mem>{ 190 {modifier_bp} { return str(yyscanner, PE_MODIFIER_BP); } 191 : { return ':'; } 192 {num_dec} { return value(yyscanner, 10); } 193 {num_hex} { return value(yyscanner, 16); } 194 /* 195 * We need to separate 'mem:' scanner part, in order to get specific 196 * modifier bits parsed out. Otherwise we would need to handle PE_NAME 197 * and we'd need to parse it manually. During the escape from <mem> 198 * state we need to put the escaping char back, so we dont miss it. 199 */ 200 . { unput(*yytext); BEGIN(INITIAL); } 201 /* 202 * We destroy the scanner after reaching EOF, 203 * but anyway just to be sure get back to INIT state. 204 */ 205 <<EOF>> { BEGIN(INITIAL); } 206 } 207 208 %% 209 210 int parse_events_wrap(void *scanner __maybe_unused) 211 { 212 return 1; 213 } 214