tools/perf/util/parse-events.l

   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         long num;
  19
  20         errno = 0;
  21         num = strtoul(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
  74 num_dec         [0-9]+
  75 num_hex         0x[a-fA-F0-9]+
  76 num_raw_hex     [a-fA-F0-9]+
  77 name            [a-zA-Z_*?][a-zA-Z0-9_*?]*
  78 modifier_event  [ukhpGH]{1,8}
  79 modifier_bp     [rwx]{1,3}
  80
  81 %%
  82
  83 %{
  84         {
  85                 int start_token;
  86
  87                 start_token = (int) parse_events_get_extra(yyscanner);
  88                 if (start_token) {
  89                         parse_events_set_extra(NULL, yyscanner);
  90                         return start_token;
  91                 }
  92          }
  93 %}
  94
  95 cpu-cycles|cycles                               { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); }
  96 stalled-cycles-frontend|idle-cycles-frontend    { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); }
  97 stalled-cycles-backend|idle-cycles-backend      { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); }
  98 instructions                                    { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); }
  99 cache-references                                { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); }
 100 cache-misses                                    { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); }
 101 branch-instructions|branches                    { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); }
 102 branch-misses                                   { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); }
 103 bus-cycles                                      { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); }
 104 ref-cycles                                      { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); }
 105 cpu-clock                                       { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); }
 106 task-clock                                      { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); }
 107 page-faults|faults                              { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); }
 108 minor-faults                                    { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); }
 109 major-faults                                    { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); }
 110 context-switches|cs                             { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); }
 111 cpu-migrations|migrations                       { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); }
 112 alignment-faults                                { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); }
 113 emulation-faults                                { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); }
 114
 115 L1-dcache|l1-d|l1d|L1-data              |
 116 L1-icache|l1-i|l1i|L1-instruction       |
 117 LLC|L2                                  |
 118 dTLB|d-tlb|Data-TLB                     |
 119 iTLB|i-tlb|Instruction-TLB              |
 120 branch|branches|bpu|btb|bpc             |
 121 node                                    { return str(yyscanner, PE_NAME_CACHE_TYPE); }
 122
 123 load|loads|read                         |
 124 store|stores|write                      |
 125 prefetch|prefetches                     |
 126 speculative-read|speculative-load       |
 127 refs|Reference|ops|access               |
 128 misses|miss                             { return str(yyscanner, PE_NAME_CACHE_OP_RESULT); }
 129
 130         /*
 131          * These are event config hardcoded term names to be specified
 132          * within xxx/.../ syntax. So far we dont clash with other names,
 133          * so we can put them here directly. In case the we have a conflict
 134          * in future, this needs to go into '//' condition block.
 135          */
 136 config                  { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); }
 137 config1                 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); }
 138 config2                 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); }
 139 name                    { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); }
 140 period                  { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); }
 141 branch_type             { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); }
 142
 143 mem:                    { BEGIN(mem); return PE_PREFIX_MEM; }
 144 r{num_raw_hex}          { return raw(yyscanner); }
 145 {num_dec}               { return value(yyscanner, 10); }
 146 {num_hex}               { return value(yyscanner, 16); }
 147
 148 {modifier_event}        { return str(yyscanner, PE_MODIFIER_EVENT); }
 149 {name}                  { return str(yyscanner, PE_NAME); }
 150 "/"                     { return '/'; }
 151 -                       { return '-'; }
 152 ,                       { return ','; }
 153 :                       { return ':'; }
 154 =                       { return '='; }
 155 \n                      { }
 156
 157 <mem>{
 158 {modifier_bp}           { return str(yyscanner, PE_MODIFIER_BP); }
 159 :                       { return ':'; }
 160 {num_dec}               { return value(yyscanner, 10); }
 161 {num_hex}               { return value(yyscanner, 16); }
 162         /*
 163          * We need to separate 'mem:' scanner part, in order to get specific
 164          * modifier bits parsed out. Otherwise we would need to handle PE_NAME
 165          * and we'd need to parse it manually. During the escape from <mem>
 166          * state we need to put the escaping char back, so we dont miss it.
 167          */
 168 .                       { unput(*yytext); BEGIN(INITIAL); }
 169         /*
 170          * We destroy the scanner after reaching EOF,
 171          * but anyway just to be sure get back to INIT state.
 172          */
 173 <<EOF>>                 { BEGIN(INITIAL); }
 174 }
 175
 176 %%
 177
 178 int parse_events_wrap(void *scanner __used)
 179 {
 180         return 1;
 181 }