math, time, seed and randomness - simple test

2 files changed, 22 insertions, 2 deletions

diff --git a/kernel/syscalls.c b/kernel/syscalls.c
index 31579e1..e3db767 100644
--- a/kernel/syscalls.c
+++ b/kernel/syscalls.c
@@ -6,6 +6,7 @@
 #include "kernel/kernel.h"
 #include "kernel/config.h"
 #include <sys/stat.h>
+#include <sys/time.h>
 #include <stdbool.h>
 #include <stddef.h>
 
@@ -15,9 +16,20 @@ int syscall_unhandled(int nr)
     panic(FOOLOS_MODULE_NAME,"unhandled syscall (generic handler)");
 }
 
-int syscall_gettimeofday(void *timeval, void *tz)
+int syscall_gettimeofday(struct timeval *tv, struct timezone *tz)
 {
-    return -1;
+    if(tv!=NULL)
+    {
+	uint32_t t=timer_get_ms();
+	tv->tv_sec=t/1000;
+	tv->tv_usec=0;//t-tv->tv_sec*1000;
+    }
+    if(tz!=NULL)
+    {
+	tz->tz_minuteswest=0;
+	tz->tz_dsttime=DST_NONE;
+    }
+    return 0;
 }
 
 int syscall_lseek(int file,int ptr,int dir) 
diff --git a/kernel/timer.c b/kernel/timer.c
index 5adc986..9ca748c 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -73,3 +73,11 @@ uint64_t timer_get_ticks()
 {
     return task_system_clock;
 }
+
+uint32_t timer_get_ms()
+{
+    uint32_t t=timer_get_ticks();
+    uint32_t s=t/25;
+    uint32_t ms=t*1000/25-1000*s;
+    return s*1000;//+ms;
+}