diff options
Diffstat (limited to 'tools/perf/util/expr.y')
| -rw-r--r-- | tools/perf/util/expr.y | 76 |
1 files changed, 69 insertions, 7 deletions
diff --git a/tools/perf/util/expr.y b/tools/perf/util/expr.y index 954556b..432b856 100644 --- a/tools/perf/util/expr.y +++ b/tools/perf/util/expr.y @@ -4,6 +4,7 @@ #include "util/debug.h" #define IN_EXPR_Y 1 #include "expr.h" +#include "smt.h" #include <string.h> #define MAXIDLEN 256 @@ -22,13 +23,15 @@ %token <num> NUMBER %token <id> ID +%token MIN MAX IF ELSE SMT_ON +%left MIN MAX IF %left '|' %left '^' %left '&' %left '-' '+' %left '*' '/' '%' %left NEG NOT -%type <num> expr +%type <num> expr if_expr %{ static int expr__lex(YYSTYPE *res, const char **pp); @@ -57,22 +60,33 @@ static int lookup_id(struct parse_ctx *ctx, char *id, double *val) %} %% -all_expr: expr { *final_val = $1; } +all_expr: if_expr { *final_val = $1; } + ; + +if_expr: + expr IF expr ELSE expr { $$ = $3 ? $1 : $5; } + | expr ; expr: NUMBER | ID { if (lookup_id(ctx, $1, &$$) < 0) { - pr_debug("%s not found", $1); + pr_debug("%s not found\n", $1); YYABORT; } } + | expr '|' expr { $$ = (long)$1 | (long)$3; } + | expr '&' expr { $$ = (long)$1 & (long)$3; } + | expr '^' expr { $$ = (long)$1 ^ (long)$3; } | expr '+' expr { $$ = $1 + $3; } | expr '-' expr { $$ = $1 - $3; } | expr '*' expr { $$ = $1 * $3; } | expr '/' expr { if ($3 == 0) YYABORT; $$ = $1 / $3; } | expr '%' expr { if ((long)$3 == 0) YYABORT; $$ = (long)$1 % (long)$3; } | '-' expr %prec NEG { $$ = -$2; } - | '(' expr ')' { $$ = $2; } + | '(' if_expr ')' { $$ = $2; } + | MIN '(' expr ',' expr ')' { $$ = $3 < $5 ? $3 : $5; } + | MAX '(' expr ',' expr ')' { $$ = $3 > $5 ? $3 : $5; } + | SMT_ON { $$ = smt_on() > 0; } ; %% @@ -82,13 +96,47 @@ static int expr__symbol(YYSTYPE *res, const char *p, const char **pp) char *dst = res->id; const char *s = p; - while (isalnum(*p) || *p == '_' || *p == '.') { + if (*p == '#') + *dst++ = *p++; + + while (isalnum(*p) || *p == '_' || *p == '.' || *p == ':' || *p == '@' || *p == '\\') { if (p - s >= MAXIDLEN) return -1; - *dst++ = *p++; + /* + * Allow @ instead of / to be able to specify pmu/event/ without + * conflicts with normal division. + */ + if (*p == '@') + *dst++ = '/'; + else if (*p == '\\') + *dst++ = *++p; + else + *dst++ = *p; + p++; } *dst = 0; *pp = p; + dst = res->id; + switch (dst[0]) { + case 'm': + if (!strcmp(dst, "min")) + return MIN; + if (!strcmp(dst, "max")) + return MAX; + break; + case 'i': + if (!strcmp(dst, "if")) + return IF; + break; + case 'e': + if (!strcmp(dst, "else")) + return ELSE; + break; + case '#': + if (!strcasecmp(dst, "#smt_on")) + return SMT_ON; + break; + } return ID; } @@ -102,6 +150,7 @@ static int expr__lex(YYSTYPE *res, const char **pp) p++; s = p; switch (*p++) { + case '#': case 'a' ... 'z': case 'A' ... 'Z': return expr__symbol(res, p - 1, pp); @@ -132,6 +181,19 @@ void expr__ctx_init(struct parse_ctx *ctx) ctx->num_ids = 0; } +static bool already_seen(const char *val, const char *one, const char **other, + int num_other) +{ + int i; + + if (one && !strcasecmp(one, val)) + return true; + for (i = 0; i < num_other; i++) + if (!strcasecmp(other[i], val)) + return true; + return false; +} + int expr__find_other(const char *p, const char *one, const char ***other, int *num_otherp) { @@ -151,7 +213,7 @@ int expr__find_other(const char *p, const char *one, const char ***other, err = 0; break; } - if (tok == ID && strcasecmp(one, val.id)) { + if (tok == ID && !already_seen(val.id, one, *other, num_other)) { if (num_other >= EXPR_MAX_OTHER - 1) { pr_debug("Too many extra events in %s\n", orig); break; |
