tools/perf/util/parse-events.l

   1
   2 %option prefix="parse_events_"
   3 %option stack
   4
   5 %{
   6 #include <errno.h>
   7 #include "../perf.h"
   8 #include "parse-events-bison.h"
   9 #include "parse-events.h"
  10
  11 static int __value(char *str, int base, int token)
  12 {
  13         long num;
  14
  15         errno = 0;
  16         num = strtoul(str, NULL, base);
  17         if (errno)
  18                 return PE_ERROR;
  19
  20         parse_events_lval.num = num;
  21         return token;
  22 }
  23
  24 static int value(int base)
  25 {
  26         return __value(parse_events_text, base, PE_VALUE);
  27 }
  28
  29 static int raw(void)
  30 {
  31         return __value(parse_events_text + 1, 16, PE_RAW);
  32 }
  33
  34 static int str(int token)
  35 {
  36         parse_events_lval.str = strdup(parse_events_text);
  37         return token;
  38 }
  39
  40 static int sym(int type, int config)
  41 {
  42         parse_events_lval.num = (type << 16) + config;
  43         return PE_VALUE_SYM;
  44 }
  45
  46 static int term(int type)
  47 {
  48         parse_events_lval.num = type;
  49         return PE_TERM;
  50 }
  51
  52 %}
  53
  54 %x mem
  55
  56 num_dec         [0-9]+
  57 num_hex         0x[a-fA-F0-9]+
  58 num_raw_hex     [a-fA-F0-9]+
  59 name            [a-zA-Z_*?][a-zA-Z0-9_*?]*
  60 modifier_event  [ukhpGH]{1,8}
  61 modifier_bp     [rwx]
  62
  63 %%
  64 cpu-cycles|cycles                               { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); }
  65 stalled-cycles-frontend|idle-cycles-frontend    { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); }
  66 stalled-cycles-backend|idle-cycles-backend      { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); }
  67 instructions                                    { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); }
  68 cache-references                                { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); }
  69 cache-misses                                    { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); }
  70 branch-instructions|branches                    { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); }
  71 branch-misses                                   { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); }
  72 bus-cycles                                      { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); }
  73 ref-cycles                                      { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); }
  74 cpu-clock                                       { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); }
  75 task-clock                                      { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); }
  76 page-faults|faults                              { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); }
  77 minor-faults                                    { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); }
  78 major-faults                                    { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); }
  79 context-switches|cs                             { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); }
  80 cpu-migrations|migrations                       { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); }
  81 alignment-faults                                { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); }
  82 emulation-faults                                { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); }
  83
  84 L1-dcache|l1-d|l1d|L1-data              |
  85 L1-icache|l1-i|l1i|L1-instruction       |
  86 LLC|L2                                  |
  87 dTLB|d-tlb|Data-TLB                     |
  88 iTLB|i-tlb|Instruction-TLB              |
  89 branch|branches|bpu|btb|bpc             |
  90 node                                    { return str(PE_NAME_CACHE_TYPE); }
  91
  92 load|loads|read                         |
  93 store|stores|write                      |
  94 prefetch|prefetches                     |
  95 speculative-read|speculative-load       |
  96 refs|Reference|ops|access               |
  97 misses|miss                             { return str(PE_NAME_CACHE_OP_RESULT); }
  98
  99         /*
 100          * These are event config hardcoded term names to be specified
 101          * within xxx/.../ syntax. So far we dont clash with other names,
 102          * so we can put them here directly. In case the we have a conflict
 103          * in future, this needs to go into '//' condition block.
 104          */
 105 config                  { return term(PARSE_EVENTS__TERM_TYPE_CONFIG); }
 106 config1                 { return term(PARSE_EVENTS__TERM_TYPE_CONFIG1); }
 107 config2                 { return term(PARSE_EVENTS__TERM_TYPE_CONFIG2); }
 108 name                    { return term(PARSE_EVENTS__TERM_TYPE_NAME); }
 109 period                  { return term(PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); }
 110 branch_type             { return term(PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); }
 111
 112 mem:                    { BEGIN(mem); return PE_PREFIX_MEM; }
 113 r{num_raw_hex}          { return raw(); }
 114 {num_dec}               { return value(10); }
 115 {num_hex}               { return value(16); }
 116
 117 {modifier_event}        { return str(PE_MODIFIER_EVENT); }
 118 {name}                  { return str(PE_NAME); }
 119 "/"                     { return '/'; }
 120 -                       { return '-'; }
 121 ,                       { return ','; }
 122 :                       { return ':'; }
 123 =                       { return '='; }
 124
 125 <mem>{
 126 {modifier_bp}           { return str(PE_MODIFIER_BP); }
 127 :                       { return ':'; }
 128 {num_dec}               { return value(10); }
 129 {num_hex}               { return value(16); }
 130         /*
 131          * We need to separate 'mem:' scanner part, in order to get specific
 132          * modifier bits parsed out. Otherwise we would need to handle PE_NAME
 133          * and we'd need to parse it manually. During the escape from <mem>
 134          * state we need to put the escaping char back, so we dont miss it.
 135          */
 136 .                       { unput(*parse_events_text); BEGIN(INITIAL); }
 137         /*
 138          * We destroy the scanner after reaching EOF,
 139          * but anyway just to be sure get back to INIT state.
 140          */
 141 <<EOF>>                 { BEGIN(INITIAL); }
 142 }
 143
 144 %%
 145
 146 int parse_events_wrap(void)
 147 {
 148         return 1;
 149 }