1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/cpu/zero/vm/stack_zero.inline.hpp Fri Apr 16 05:05:53 2010 -0700
1.3 @@ -0,0 +1,43 @@
1.4 +/*
1.5 + * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * Copyright 2010 Red Hat, Inc.
1.7 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.8 + *
1.9 + * This code is free software; you can redistribute it and/or modify it
1.10 + * under the terms of the GNU General Public License version 2 only, as
1.11 + * published by the Free Software Foundation.
1.12 + *
1.13 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.14 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.15 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.16 + * version 2 for more details (a copy is included in the LICENSE file that
1.17 + * accompanied this code).
1.18 + *
1.19 + * You should have received a copy of the GNU General Public License version
1.20 + * 2 along with this work; if not, write to the Free Software Foundation,
1.21 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.22 + *
1.23 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.24 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.25 + * have any questions.
1.26 + *
1.27 + */
1.28 +
1.29 +// This function should match SharkStack::CreateStackOverflowCheck
1.30 +inline void ZeroStack::overflow_check(int required_words, TRAPS) {
1.31 + JavaThread *thread = (JavaThread *) THREAD;
1.32 +
1.33 + // Check the Zero stack
1.34 + if (required_words > available_words()) {
1.35 + handle_overflow(THREAD);
1.36 + return;
1.37 + }
1.38 +
1.39 + // Check the ABI stack
1.40 + address stack_top = thread->stack_base() - thread->stack_size();
1.41 + int free_stack = ((address) &stack_top) - stack_top;
1.42 + if (free_stack < shadow_pages_size()) {
1.43 + handle_overflow(THREAD);
1.44 + return;
1.45 + }
1.46 +}
