1 files changed, 73 insertions, 0 deletions
diff --git a/newlib/libc/stdlib/exit.c b/newlib/libc/stdlib/exit.c
new file mode 100644
index 00000000000..543bd0e303f
--- /dev/null
+++ b/newlib/libc/stdlib/exit.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 1990 Regents of the University of California.
+ * All rights reserved.
+ *
+ * %sccs.include.redist.c%
+ */
+
+/*
+FUNCTION
+<<exit>>---end program execution
+
+INDEX
+	exit
+
+ANSI_SYNOPSIS
+	#include <stdlib.h>
+	void exit(int <[code]>);
+
+TRAD_SYNOPSIS
+	#include <stdlib.h>
+	void exit(<[code]>)
+	int <[code]>;
+
+DESCRIPTION
+Use <<exit>> to return control from a program to the host operating
+environment.  Use the argument <[code]> to pass an exit status to the
+operating environment: two particular values, <<EXIT_SUCCESS>> and
+<<EXIT_FAILURE>>, are defined in `<<stdlib.h>>' to indicate success or
+failure in a portable fashion.
+
+<<exit>> does two kinds of cleanup before ending execution of your
+program.  First, it calls all application-defined cleanup functions
+you have enrolled with <<atexit>>.  Second, files and streams are
+cleaned up: any pending output is delivered to the host system, each
+open file or stream is closed, and files created by <<tmpfile>> are
+deleted.
+
+RETURNS
+<<exit>> does not return to its caller.
+
+PORTABILITY
+ANSI C requires <<exit>>, and specifies that <<EXIT_SUCCESS>> and
+<<EXIT_FAILURE>> must be defined.
+
+Supporting OS subroutines required: <<_exit>>.
+*/
+
+#include <stdlib.h>
+#include <unistd.h>	/* for _exit() declaration */
+#include <reent.h>
+
+#ifndef _REENT_ONLY
+
+/*
+ * Exit, flushing stdio buffers if necessary.
+ */
+
+void 
+_DEFUN (exit, (code),
+	int code)
+{
+  register struct _atexit *p;
+  register int n;
+
+  for (p = _REENT->_atexit; p; p = p->_next)
+    for (n = p->_ind; --n >= 0;)
+      (*p->_fns[n]) ();
+  if (_REENT->__cleanup)
+    (*_REENT->__cleanup) (_REENT);
+  _exit (code);
+}
+
+#endif