Fix system call related date builtin functions

Related issues: #213, #691
 * Fixed 'ecma_date_local_tza' and 'ecma_date_daylight_saving_ta' date builtin helper functions
 * Added syscall of gettimeofday function to get the current system time and timezone.
 * Fixed related regression test files.

JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com

jerry-libc/include/time.h

@@ -0,0 +1,46 @@
+/* Copyright 2016 Samsung Electronics Co., Ltd.
+ * Copyright 2016 University of Szeged
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef JERRY_LIBC_TIME_H
+#define JERRY_LIBC_TIME_H
+
+#ifdef __cplusplus
+# define EXTERN_C "C"
+#else /* !__cplusplus */
+# define EXTERN_C
+#endif /* !__cplusplus */
+
+/**
+ * Time value structure
+ */
+struct _timeval
+{
+  unsigned long tv_sec;   /**< seconds */
+  unsigned long tv_usec;  /**< microseconds */
+};
+
+/**
+ * Timezone structure
+ */
+struct timezone
+{
+  int tz_minuteswest;     /**< minutes west of Greenwich */
+  int tz_dsttime;         /**< type of DST correction */
+};
+
+extern EXTERN_C int gettimeofday (void *tp, void *tzp);
+
+#endif /* !JERRY_LIBC_TIME_H */

jerry-libc/target/darwin/jerry-libc-target.c

@@ -1,4 +1,5 @@
-/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2016 Samsung Electronics Co., Ltd.
+ * Copyright 2016 University of Szeged.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -28,6 +29,7 @@
 #include <sys/resource.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <time.h>
 
 #include "jerry-libc-defs.h"
 
@@ -384,3 +386,14 @@ fwrite (const void *ptr, /**< data to write */
   return bytes_written / size;
 } /* fwrite */
 
+/**
+ * This function can get the time as well as a timezone.
+ *
+ * @return 0 if success, -1 otherwise
+ */
+int
+gettimeofday (void *tp,  /**< struct timeval */
+              void *tzp) /**< struct timezone */
+{
+  return (int) syscall_2 (__NR_gettimeofday, (long int) tp, (long int) tzp);
+} /* gettimeofday */

jerry-libc/target/linux/jerry-libc-target.c

@@ -1,4 +1,5 @@
-/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2016 Samsung Electronics Co., Ltd.
+ * Copyright 2016 University of Szeged.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -28,6 +29,7 @@
 #include <sys/resource.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <time.h>
 
 #include "jerry-libc-defs.h"
 
@@ -384,6 +386,18 @@ fwrite (const void *ptr, /**< data to write */
   return bytes_written / size;
 } /* fwrite */
 
+/**
+ * This function can get the time as well as a timezone.
+ *
+ * @return 0 if success, -1 otherwise
+ */
+int
+gettimeofday (void *tp,  /**< struct timeval */
+              void *tzp) /**< struct timezone */
+{
+  return (int) syscall_2 (__NR_gettimeofday, (long int) tp, (long int) tzp);
+} /* gettimeofday */
+
 // FIXME
 #if 0
 /**

jerry-libc/target/mcu-stubs/jerry-libc-target.c

@@ -1,4 +1,5 @@
-/* Copyright 2015 Samsung Electronics Co., Ltd.
+/* Copyright 2015-2016 Samsung Electronics Co., Ltd.
+ * Copyright 2016 University of Szeged.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,6 +20,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <time.h>
 
 #include "jerry-libc-defs.h"
 
@@ -61,3 +63,14 @@ fwrite (const void *ptr __attr_unused___, /**< data to write */
   return size * nmemb;
 } /* fwrite */
 
+/**
+ * This function can get the time as well as a timezone.
+ *
+ * @return 0 if success, -1 otherwise
+ */
+int
+gettimeofday (void *tp __attr_unused___,  /**< struct timeval */
+              void *tzp __attr_unused___) /**< struct timezone */
+{
+  return 0;
+} /* gettimeofday */