tools/perf/util/pmu.y

   1 %define api.pure full
   2 %parse-param {void *format}
   3 %parse-param {void *scanner}
   4 %lex-param {void* scanner}
   5
   6 %{
   7
   8 #ifndef NDEBUG
   9 #define YYDEBUG 1
  10 #endif
  11
  12 #include <linux/compiler.h>
  13 #include <linux/list.h>
  14 #include <linux/bitmap.h>
  15 #include <string.h>
  16 #include "pmu.h"
  17 #include "pmu-bison.h"
  18
  19 int perf_pmu_lex(YYSTYPE * yylval_param , void *yyscanner);
  20
  21 #define ABORT_ON(val) \
  22 do { \
  23         if (val) \
  24                 YYABORT; \
  25 } while (0)
  26
  27 static void perf_pmu_error(void *format, void *scanner, const char *msg);
  28
  29 static void perf_pmu__set_format(unsigned long *bits, long from, long to)
  30 {
  31         long b;
  32
  33         if (!to)
  34                 to = from;
  35
  36         memset(bits, 0, BITS_TO_BYTES(PERF_PMU_FORMAT_BITS));
  37         for (b = from; b <= to; b++)
  38                 __set_bit(b, bits);
  39 }
  40
  41 %}
  42
  43 %token PP_CONFIG
  44 %token PP_VALUE PP_ERROR
  45 %type <num> PP_VALUE
  46 %type <bits> bit_term
  47 %type <bits> bits
  48
  49 %union
  50 {
  51         unsigned long num;
  52         DECLARE_BITMAP(bits, PERF_PMU_FORMAT_BITS);
  53 }
  54
  55 %%
  56
  57 format:
  58 format format_term
  59 |
  60 format_term
  61
  62 format_term:
  63 PP_CONFIG ':' bits
  64 {
  65         perf_pmu_format__set_value(format, PERF_PMU_FORMAT_VALUE_CONFIG, $3);
  66 }
  67 |
  68 PP_CONFIG PP_VALUE ':' bits
  69 {
  70         perf_pmu_format__set_value(format, $2, $4);
  71 }
  72
  73 bits:
  74 bits ',' bit_term
  75 {
  76         bitmap_or($$, $1, $3, 64);
  77 }
  78 |
  79 bit_term
  80 {
  81         memcpy($$, $1, sizeof($1));
  82 }
  83
  84 bit_term:
  85 PP_VALUE '-' PP_VALUE
  86 {
  87         perf_pmu__set_format($$, $1, $3);
  88 }
  89 |
  90 PP_VALUE
  91 {
  92         perf_pmu__set_format($$, $1, 0);
  93 }
  94
  95 %%
  96
  97 static void perf_pmu_error(void *format __maybe_unused,
  98                            void *scanner __maybe_unused,
  99                            const char *msg __maybe_unused)
 100 {
 101 }