tinycc.diff

diff --git a/tccpp.c b/tccpp.c
index 6b828c9..f451987 100644
--- a/tccpp.c
+++ b/tccpp.c
@@ -3340,8 +3340,25 @@ static int next_argstream(Sym **nested_list, TokenString *ws_str)
         return tok;
     }
 }
 
+static inline uintmax_t
+gettime(void)
+{
+#if defined(CLOCK_PROCESS_CPUTIME_ID)
+	struct timespec t;
+	clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &t);
+	return t.tv_nsec + (uintmax_t)t.tv_sec * 1000000000;
+#elif defined(CLOCK_MONOTONIC_RAW)
+	struct timespec t;
+	clock_gettime(CLOCK_MONOTONIC_RAW, &t);
+	return t.tv_nsec + (uintmax_t)t.tv_sec * 1000000000;
+#else
+	return ((uintmax_t)clock() * 1000000000) / CLOCKS_PER_SEC;
+#endif
+}
+
+
 /* do macro substitution of current token with macro 's' and add
    result to (tok_str,tok_len). 'nested_list' is the list of all
    macros we got inside to avoid recursing. Return non zero if no
    substitution needs to be done */
@@ -3365,15 +3382,22 @@ static int macro_subst_tok(
         snprintf(buf, sizeof(buf), "%d", t);
         cstrval = buf;
         t1 = TOK_PPNUM;
         goto add_cstr1;
+    } else if (tok == TOK___TIMER__) {
+        static uintmax_t cur = 0;
+        uintmax_t time = gettime();
+        snprintf(buf, sizeof(buf), "%.10f", (time - cur) * 1.0/1000000000);
+        cur = time;
+        cstrval = buf;
+        t1 = TOK_PPNUM;
+        goto add_cstr1;
     } else if (tok == TOK___FILE__) {
         cstrval = file->filename;
         goto add_cstr;
     } else if (tok == TOK___DATE__ || tok == TOK___TIME__) {
         time_t ti;
         struct tm *tm;
-
         time(&ti);
         tm = localtime(&ti);
         if (tok == TOK___DATE__) {
             snprintf(buf, sizeof(buf), "%s %2d %d",
@@ -3853,8 +3877,9 @@ ST_FUNC void tccpp_new(TCCState *s)
     define_push(TOK___LINE__, MACRO_OBJ, NULL, NULL);
     define_push(TOK___FILE__, MACRO_OBJ, NULL, NULL);
     define_push(TOK___DATE__, MACRO_OBJ, NULL, NULL);
     define_push(TOK___TIME__, MACRO_OBJ, NULL, NULL);
+    define_push(TOK___TIMER__, MACRO_OBJ, NULL, NULL);
     define_push(TOK___COUNTER__, MACRO_OBJ, NULL, NULL);
 }
 
 ST_FUNC void tccpp_delete(TCCState *s)
diff --git a/tcctok.h b/tcctok.h
index d4c1ef5..e4fe6fc 100644
--- a/tcctok.h
+++ b/tcctok.h
@@ -89,8 +89,10 @@
      DEF(TOK___LINE__, "__LINE__")
      DEF(TOK___FILE__, "__FILE__")
      DEF(TOK___DATE__, "__DATE__")
      DEF(TOK___TIME__, "__TIME__")
+     DEF(TOK___SECONDS__, "__SECONDS__")
+     DEF(TOK___TIMER__, "__TIMER__")
      DEF(TOK___FUNCTION__, "__FUNCTION__")
      DEF(TOK___VA_ARGS__, "__VA_ARGS__")
      DEF(TOK___COUNTER__, "__COUNTER__")
      DEF(TOK___HAS_INCLUDE, "__has_include")