Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 107 insertions, 0 deletions

diff --git a/REORG.TODO/stdlib/exit.c b/REORG.TODO/stdlib/exit.c
new file mode 100644
index 0000000000..c0b6d666c7
--- /dev/null
+++ b/REORG.TODO/stdlib/exit.c
@@ -0,0 +1,107 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sysdep.h>
+#include "exit.h"
+
+#include "set-hooks.h"
+DEFINE_HOOK (__libc_atexit, (void))
+
+
+/* Call all functions registered with `atexit' and `on_exit',
+   in the reverse of the order in which they were registered
+   perform stdio cleanup, and terminate program execution with STATUS.  */
+void
+attribute_hidden
+__run_exit_handlers (int status, struct exit_function_list **listp,
+		     bool run_list_atexit, bool run_dtors)
+{
+  /* First, call the TLS destructors.  */
+#ifndef SHARED
+  if (&__call_tls_dtors != NULL)
+#endif
+    if (run_dtors)
+      __call_tls_dtors ();
+
+  /* We do it this way to handle recursive calls to exit () made by
+     the functions registered with `atexit' and `on_exit'. We call
+     everyone on the list and use the status value in the last
+     exit (). */
+  while (*listp != NULL)
+    {
+      struct exit_function_list *cur = *listp;
+
+      while (cur->idx > 0)
+	{
+	  const struct exit_function *const f =
+	    &cur->fns[--cur->idx];
+	  switch (f->flavor)
+	    {
+	      void (*atfct) (void);
+	      void (*onfct) (int status, void *arg);
+	      void (*cxafct) (void *arg, int status);
+
+	    case ef_free:
+	    case ef_us:
+	      break;
+	    case ef_on:
+	      onfct = f->func.on.fn;
+#ifdef PTR_DEMANGLE
+	      PTR_DEMANGLE (onfct);
+#endif
+	      onfct (status, f->func.on.arg);
+	      break;
+	    case ef_at:
+	      atfct = f->func.at;
+#ifdef PTR_DEMANGLE
+	      PTR_DEMANGLE (atfct);
+#endif
+	      atfct ();
+	      break;
+	    case ef_cxa:
+	      cxafct = f->func.cxa.fn;
+#ifdef PTR_DEMANGLE
+	      PTR_DEMANGLE (cxafct);
+#endif
+	      cxafct (f->func.cxa.arg, status);
+	      break;
+	    }
+	}
+
+      *listp = cur->next;
+      if (*listp != NULL)
+	/* Don't free the last element in the chain, this is the statically
+	   allocate element.  */
+	free (cur);
+    }
+
+  if (run_list_atexit)
+    RUN_HOOK (__libc_atexit, ());
+
+  _exit (status);
+}
+
+
+void
+exit (int status)
+{
+  __run_exit_handlers (status, &__exit_funcs, true, true);
+}
+libc_hidden_def (exit)