X-Git-Url: https://git.cryptolib.org/?a=blobdiff_plain;ds=sidebyside;f=test_src%2Fperformance_test.c;h=de718bc54f63de6f42696de35f46ec751f373295;hb=45ad29acafe8ee17f7b1bd5b933a0e04cd51c94e;hp=6ba564512985fc1ef0ebfb410be65c7f39d8b3dc;hpb=aa060d30f8600acb9cc5bcf9fa3d97a2fbe5ccda;p=avr-crypto-lib.git

diff --git a/test_src/performance_test.c b/test_src/performance_test.c
index 6ba5645..de718bc 100644
--- a/test_src/performance_test.c
+++ b/test_src/performance_test.c
@@ -20,10 +20,10 @@
  * author: Daniel Otte
  * email:  daniel.otte@rub.de
  * license: GPLv3
- * 
- * 
+ *
+ *
  **/
- 
+
 #include "config.h"
 #include <string.h>
 #include <stdint.h>
@@ -41,10 +41,10 @@
 
 
 
-uint32_t ovfcounter;
+static volatile uint32_t ovfcounter;
 
-uint16_t const_overhead=0;
-uint16_t int_overhead=0;
+static uint16_t const_overhead=0;
+static uint16_t int_overhead=0;
 
 ISR(TIMER1_OVF_vect){
 	ovfcounter++;
@@ -75,7 +75,7 @@ void startTimer(uint8_t granularity){
 uint64_t stopTimer(void){
 	TCCR1B = 0; /* stop timer */
 	uint64_t ret;
-	ret = (ovfcounter<<16) | TCNT1;
+	ret = (((uint64_t)ovfcounter)<<16) | TCNT1;
 	ret -= const_overhead;
 	ret -= ovfcounter * int_overhead;
 	return ret;
@@ -83,7 +83,7 @@ uint64_t stopTimer(void){
 
 void getOverhead(uint16_t* constoh, uint16_t* intoh){
 	*constoh = const_overhead;
-	*intoh   = int_overhead; 
+	*intoh   = int_overhead;
 }
 
 void print_time_P(PGM_P s, uint64_t t){