1 files changed, 91 insertions, 0 deletions
diff --git a/libgloss/aarch64/libcfunc.c b/libgloss/aarch64/libcfunc.c
new file mode 100644
index 000000000..8af3a6cc5
--- /dev/null
+++ b/libgloss/aarch64/libcfunc.c
@@ -0,0 +1,91 @@
+/* Copyright (c) 2009, 2010, 2011, 2012 ARM Ltd.  All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the distribution.
+ 3. The name of the company may not be used to endorse or promote
+    products derived from this software without specific prior written
+    permission.
+
+ THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/* Support files for GNU libc.  Files in the C namespace go here.
+   Files in the system namespace (ie those that start with an underscore)
+   go in syscalls.c.
+
+   Note: These functions are in a seperate file so that OS providers can
+   overrride the system call stubs (defined in syscalls.c) without having
+   to provide libc funcitons as well.  */
+
+#include "svc.h"
+
+#include <errno.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+
+
+extern clock_t _clock (void);
+extern int _isatty (int);
+
+unsigned __attribute__((weak))
+alarm (unsigned seconds)
+{
+  (void) seconds;
+  return 0;
+}
+
+clock_t __attribute__((weak))
+clock (void)
+{
+  return _clock ();
+}
+
+int __attribute__((weak))
+isatty (int fildes)
+{
+  return _isatty (fildes);
+}
+
+int __attribute__((weak))
+pause (void)
+{
+  errno = ENOSYS;
+  return -1;
+}
+
+unsigned __attribute__((weak))
+sleep (unsigned seconds)
+{
+  clock_t t0 = _clock ();
+  clock_t dt = seconds * CLOCKS_PER_SEC;
+
+  while (_clock () - t0 < dt)
+    ;
+  return 0;
+}
+
+int __attribute__((weak))
+usleep (useconds_t useconds)
+{
+  clock_t t0 = _clock ();
+  clock_t dt = useconds / (1000000 / CLOCKS_PER_SEC);
+
+  while (_clock () - t0 < dt)
+    ;
+  return 0;
+}