Merge pull request #782 from OlegHahm/syscall_gettimeofday

sys: vtimer: added gettimeofday syscall

cpu/arm_common/syscalls.c

@@ -26,12 +26,18 @@
 #include <sys/stat.h>
 #include <sys/unistd.h>
 #include <stdint.h>
+#include <sys/time.h>
 
 #include "arm_cpu.h"
 // core
 #include "kernel.h"
 #include "irq.h"
 #include "io.h"
+#if defined MODULE_RTC
+#include "rtc.h"
+#elif defined MODULE_VTIMER
+#include "vtimer.h"
+#endif
 
 /* When using the HAL standard in and out are handled by HAL
    devices. */
@@ -271,5 +277,17 @@ int _kill_r(struct _reent *r, int pid, int sig)
     return -1;
 }
 /*---------------------------------------------------------------------------*/
+int _gettimeofday(struct timeval *tp, void *restrict tzp) {
+    (void) tzp;
+#if defined MODULE_RTC
+    rtc_time(tp);
+#elif defined MODULE_VTIMER
+    vtimer_gettimeofday(tp);
+#else
+#warning gettimeofday syscall is not implemented without vtimer or rtc module
+#endif
+    return 0;
+}
+
 void _init(void) {}
 void _fini(void) {}

cpu/lpc1768/syscalls.c

@@ -21,8 +21,12 @@
 #include <sys/stat.h>
 #include <sys/unistd.h>
 #include <stdint.h>
+#include <sys/time.h>
 #include "kernel.h"
 #include "irq.h"
+#ifdef MODULE_VTIMER
+#include "vtimer.h"
+#endif
 
 /**
  * @name Heaps (defined in linker script)
@@ -227,5 +231,13 @@ int _kill_r(struct _reent *r, int pid, int sig)
 	return -1;
 }
 /*---------------------------------------------------------------------------*/
+#ifdef MODULE_VTIMER
+int _gettimeofday(struct timeval *tp, void *restrict tzp) {
+    (void) tzp;
+    vtimer_gettimeofday(tp);
+    return 0;
+}
+#endif
+
 void _init(void){}
 void _fini(void){}

cpu/native/syscalls.c

@@ -30,9 +30,13 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <stdarg.h>
+#ifdef MODULE_VTIMER
+#include <sys/time.h>
+#endif
 
 #include "cpu.h"
 #include "irq.h"
+#include "vtimer.h"
 
 #include "native_internal.h"
 
@@ -297,3 +301,11 @@ void errx(int eval, const char *fmt, ...)
     va_start(argp, fmt);
     verrx(eval, fmt, argp);
 }
+
+#ifdef MODULE_VTIMER
+int _gettimeofday(struct timeval *tp, void *restrict tzp) {
+    (void) tzp;
+    vtimer_gettimeofday(tp);
+    return 0;
+}
+#endif

sys/include/vtimer.h

@@ -19,6 +19,7 @@
 #define __VTIMER_H
 
 #include <time.h>
+#include <sys/time.h>
 
 #include "queue.h"
 #include "timex.h"
@@ -47,6 +48,12 @@ typedef struct vtimer_t {
  */
 void vtimer_now(timex_t *out);
 
+/**
+ * @brief Get the current time in seconds and microseconds since system start
+ * @param[in] tp    Uptime will be stored in the timeval structure pointed to by tp
+ */
+void vtimer_gettimeofday(struct timeval *tp);
+
 /**
  * @brief   Returns the current time in broken down format
  * @param[out]  localt      Pointer to structure to receive time

sys/vtimer/vtimer.c

@@ -266,6 +266,14 @@ void vtimer_now(timex_t *out)
     out->microseconds = us % (1000 * 1000);
 }
 
+void vtimer_gettimeofday(struct timeval *tp) {
+    timex_t now;
+    vtimer_now(&now);
+
+    tp->tv_sec = now.seconds;
+    tp->tv_usec = now.microseconds;
+}
+
 void vtimer_get_localtime(struct tm *localt)
 {
     timex_t now;