(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

1 files changed, 54 insertions, 0 deletions

diff --git a/sysdeps/generic/bb_init_func.c b/sysdeps/generic/bb_init_func.c
new file mode 100644
index 0000000000..19901d8d09
--- /dev/null
+++ b/sysdeps/generic/bb_init_func.c
@@ -0,0 +1,54 @@
+/* Copyright (C) 1996, 1997, 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by David Mosberger (davidm@cs.arizona.edu).
+
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+/* __bb_init_func is invoked at the beginning of each function, before
+   any registers have been saved.  This generic routine should work
+   provided that calling this function doesn't mangle the arguments
+   passed to the function being called.  If that's not the case, a
+   system specific routine must be provided.  */
+
+#include <sys/types.h>
+#include <sys/gmon.h>
+
+#include <stdlib.h>
+
+void
+__bb_init_func (struct __bb *bb)
+{
+  struct gmonparam *p = &_gmonparam;
+
+  if (bb->zero_word != 0)
+    {
+      return;	/* handle common case quickly */
+    }
+
+  /* insert this basic-block into basic-block list: */
+  bb->zero_word = 1;
+  bb->next = __bb_head;
+  __bb_head = bb;
+
+  if (bb->next == 0 && p->state != GMON_PROF_ON)
+    {
+      /* we didn't register _mcleanup yet and pc profiling doesn't seem
+	 to be active, so let's register it now: */
+      extern void *__dso_handle __attribute__ ((__weak__));
+      __cxa_atexit ((void (*) (void *)) _mcleanup, NULL,
+		    &__dso_handle ? __dso_handle : NULL);
+    }
+}