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src/cpu/zero/vm/stack_zero.inline.hpp@aa9c266de52a (annotated)

src/cpu/zero/vm/stack_zero.inline.hpp

Fri, 16 Apr 2010 05:05:53 -0700

author

twisti

date

Fri, 16 Apr 2010 05:05:53 -0700

changeset 1818

aa9c266de52a

child 1866

348346af6676

permissions

-rw-r--r--

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>

twisti@1818	1	/*
twisti@1818	2	* Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
twisti@1818	3	* Copyright 2010 Red Hat, Inc.
twisti@1818	4	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
twisti@1818	5	*
twisti@1818	6	* This code is free software; you can redistribute it and/or modify it
twisti@1818	7	* under the terms of the GNU General Public License version 2 only, as
twisti@1818	8	* published by the Free Software Foundation.
twisti@1818	9	*
twisti@1818	10	* This code is distributed in the hope that it will be useful, but WITHOUT
twisti@1818	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
twisti@1818	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
twisti@1818	13	* version 2 for more details (a copy is included in the LICENSE file that
twisti@1818	14	* accompanied this code).
twisti@1818	15	*
twisti@1818	16	* You should have received a copy of the GNU General Public License version
twisti@1818	17	* 2 along with this work; if not, write to the Free Software Foundation,
twisti@1818	18	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
twisti@1818	19	*
twisti@1818	20	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
twisti@1818	21	* CA 95054 USA or visit www.sun.com if you need additional information or
twisti@1818	22	* have any questions.
twisti@1818	23	*
twisti@1818	24	*/
twisti@1818	25
twisti@1818	26	// This function should match SharkStack::CreateStackOverflowCheck
twisti@1818	27	inline void ZeroStack::overflow_check(int required_words, TRAPS) {
twisti@1818	28	JavaThread *thread = (JavaThread *) THREAD;
twisti@1818	29
twisti@1818	30	// Check the Zero stack
twisti@1818	31	if (required_words > available_words()) {
twisti@1818	32	handle_overflow(THREAD);
twisti@1818	33	return;
twisti@1818	34	}
twisti@1818	35
twisti@1818	36	// Check the ABI stack
twisti@1818	37	address stack_top = thread->stack_base() - thread->stack_size();
twisti@1818	38	int free_stack = ((address) &stack_top) - stack_top;
twisti@1818	39	if (free_stack < shadow_pages_size()) {
twisti@1818	40	handle_overflow(THREAD);
twisti@1818	41	return;
twisti@1818	42	}
twisti@1818	43	}