Moved Robert's stack tracking code out of m_aspacemgr into a new module
m_stacks, because it's a nicely distinct and stand-alone piece of
functionality.  This happily removes m_aspacemgr's dependence on
m_mallocfree (there was an apparent dependence due to the #include, even if
it didn't manifest itself in practice -- very important!) and m_options (not
so important).



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@4009 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/pub_core_stacks.h b/coregrind/pub_core_stacks.h
new file mode 100644
index 0000000..50e59e2
--- /dev/null
+++ b/coregrind/pub_core_stacks.h
@@ -0,0 +1,51 @@
+
+/*--------------------------------------------------------------------*/
+/*--- Stack management.                                 m_stacks.c ---*/
+/*--------------------------------------------------------------------*/
+
+/*
+   This file is part of Valgrind, a dynamic binary instrumentation
+   framework.
+
+   Copyright (C) 2000-2005 Julian Seward 
+      jseward@acm.org
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   This program 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
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307, USA.
+
+   The GNU General Public License is contained in the file COPYING.
+*/
+
+#ifndef __PUB_CORE_STACKS_H
+#define __PUB_CORE_STACKS_H
+
+//--------------------------------------------------------------------
+// PURPOSE: This module deals with the registration of stacks for the
+// purposes of detecting stack switches.
+//--------------------------------------------------------------------
+
+extern UWord VG_(register_stack)   ( Addr start, Addr end );
+extern void  VG_(deregister_stack) ( UWord id );
+extern void  VG_(change_stack)     ( UWord id, Addr start, Addr end );
+
+extern VG_REGPARM(2)
+       void  VG_(unknown_SP_update) ( Addr old_SP, Addr new_SP );
+
+#endif   // __PUB_CORE_STACKS_H
+
+/*--------------------------------------------------------------------*/
+/*--- end                                                          ---*/
+/*--------------------------------------------------------------------*/
+