[sync] sync code from internal

components/libc/newlib/syscalls_nosys.c

@@ -0,0 +1,144 @@
+#include <limits.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/times.h>
+#include <sys/stat.h>
+
+#undef errno
+int errno;
+
+char *__env[1] = { 0 };
+char **environ = __env;
+
+void _exit(int rc)
+{
+    for (;;)
+        ;
+}
+
+int _chown(const char *path, uid_t owner, gid_t group)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
+int _close(int fildes)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
+int _execve(char *name, char **argv, char **env)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
+int _fork(void)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
+int _fstat(int fildes, struct stat *st)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
+int _getpid(void)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
+int _gettimeofday(struct timeval *ptimeval, void *ptimezone)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
+int _isatty(int file)
+{
+    errno = ENOSYS;
+    return 0;
+}
+
+int _kill(int pid, int sig)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
+int _link(char *existing, char *new)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
+int _lseek(int file, int ptr, int dir)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
+int _open(char *file, int flags, int mode)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
+int _read(int file, char *ptr, int len)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
+int _readlink(const char *path, char *buf, size_t bufsize)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
+void *_sbrk(int incr)
+{
+    errno = ENOSYS;
+    return NULL;
+}
+
+int _stat(const char *file, struct stat *st)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
+int _symlink(const char *path1, const char *path2)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
+clock_t _times(struct tms *buf)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
+int _unlink(char *name)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
+int _wait(int *status)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
+int _write(int file, char *ptr, int len)
+{
+    errno = ENOSYS;
+    return -1;
+}