Mercurial > hg > truffle
diff src/cpu/zero/vm/stack_zero.inline.hpp @ 1383:aa9c266de52a
6944473: 6941224 misses new files
Summary: Two new files are missing in the push for 6941224.
Reviewed-by: twisti
Contributed-by: Gary Benson <gbenson@redhat.com>
author | twisti |
---|---|
date | Fri, 16 Apr 2010 05:05:53 -0700 |
parents | |
children | 348346af6676 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/cpu/zero/vm/stack_zero.inline.hpp Fri Apr 16 05:05:53 2010 -0700 @@ -0,0 +1,43 @@ +/* + * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved. + * Copyright 2010 Red Hat, Inc. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code 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 + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +// This function should match SharkStack::CreateStackOverflowCheck +inline void ZeroStack::overflow_check(int required_words, TRAPS) { + JavaThread *thread = (JavaThread *) THREAD; + + // Check the Zero stack + if (required_words > available_words()) { + handle_overflow(THREAD); + return; + } + + // Check the ABI stack + address stack_top = thread->stack_base() - thread->stack_size(); + int free_stack = ((address) &stack_top) - stack_top; + if (free_stack < shadow_pages_size()) { + handle_overflow(THREAD); + return; + } +}