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 name_minus [a-zA-Z_*?][a-zA-Z0-9\-_*?]* 85 /* If you add a modifier you need to update check_modifier() */ 86 modifier_event [ukhpGHSD]+ 87 modifier_bp [rwx]{1,3} 88 89 %% 90 91 %{ 92 { 93 int start_token; 94 95 start_token = parse_events_get_extra(yyscanner); 96 97 if (start_token == PE_START_TERMS) 98 BEGIN(config); 99 else if (start_token == PE_START_EVENTS) 100 BEGIN(event); 101 102 if (start_token) { 103 parse_events_set_extra(NULL, yyscanner); 104 return start_token; 105 } 106 } 107 %} 108 109 <event>{ 110 111 {group} { 112 BEGIN(INITIAL); yyless(0); 113 } 114 115 {event_pmu} | 116 {event} { 117 str(yyscanner, PE_EVENT_NAME); 118 BEGIN(INITIAL); yyless(0); 119 return PE_EVENT_NAME; 120 } 121 122 . | 123 <<EOF>> { 124 BEGIN(INITIAL); yyless(0); 125 } 126 127 } 128 129 <config>{ 130 config { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); } 131 config1 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); } 132 config2 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); } 133 name { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); } 134 period { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); } 135 branch_type { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); } 136 , { return ','; } 137 "/" { BEGIN(INITIAL); return '/'; } 138 {name_minus} { return str(yyscanner, PE_NAME); } 139 } 140 141 <mem>{ 142 {modifier_bp} { return str(yyscanner, PE_MODIFIER_BP); } 143 : { return ':'; } 144 {num_dec} { return value(yyscanner, 10); } 145 {num_hex} { return value(yyscanner, 16); } 146 /* 147 * We need to separate 'mem:' scanner part, in order to get specific 148 * modifier bits parsed out. Otherwise we would need to handle PE_NAME 149 * and we'd need to parse it manually. During the escape from <mem> 150 * state we need to put the escaping char back, so we dont miss it. 151 */ 152 . { unput(*yytext); BEGIN(INITIAL); } 153 /* 154 * We destroy the scanner after reaching EOF, 155 * but anyway just to be sure get back to INIT state. 156 */ 157 <<EOF>> { BEGIN(INITIAL); } 158 } 159 160 cpu-cycles|cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); } 161 stalled-cycles-frontend|idle-cycles-frontend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); } 162 stalled-cycles-backend|idle-cycles-backend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); } 163 instructions { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); } 164 cache-references { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); } 165 cache-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); } 166 branch-instructions|branches { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); } 167 branch-misses { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); } 168 bus-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); } 169 ref-cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); } 170 cpu-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); } 171 task-clock { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); } 172 page-faults|faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); } 173 minor-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); } 174 major-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); } 175 context-switches|cs { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); } 176 cpu-migrations|migrations { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); } 177 alignment-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); } 178 emulation-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); } 179 dummy { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); } 180 181 L1-dcache|l1-d|l1d|L1-data | 182 L1-icache|l1-i|l1i|L1-instruction | 183 LLC|L2 | 184 dTLB|d-tlb|Data-TLB | 185 iTLB|i-tlb|Instruction-TLB | 186 branch|branches|bpu|btb|bpc | 187 node { return str(yyscanner, PE_NAME_CACHE_TYPE); } 188 189 load|loads|read | 190 store|stores|write | 191 prefetch|prefetches | 192 speculative-read|speculative-load | 193 refs|Reference|ops|access | 194 misses|miss { return str(yyscanner, PE_NAME_CACHE_OP_RESULT); } 195 196 mem: { BEGIN(mem); return PE_PREFIX_MEM; } 197 r{num_raw_hex} { return raw(yyscanner); } 198 {num_dec} { return value(yyscanner, 10); } 199 {num_hex} { return value(yyscanner, 16); } 200 201 {modifier_event} { return str(yyscanner, PE_MODIFIER_EVENT); } 202 {name} { return str(yyscanner, PE_NAME); } 203 "/" { BEGIN(config); return '/'; } 204 - { return '-'; } 205 , { BEGIN(event); return ','; } 206 : { return ':'; } 207 "{" { BEGIN(event); return '{'; } 208 "}" { return '}'; } 209 = { return '='; } 210 \n { } 211 . { } 212 213 %% 214 215 int parse_events_wrap(void *scanner __maybe_unused) 216 { 217 return 1; 218 } 219