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src/cpu/zero/vm/stack_zero.inline.hpp@c18cbe5936b8 (annotated)

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

Thu, 27 May 2010 19:08:38 -0700

author

trims

date

Thu, 27 May 2010 19:08:38 -0700

changeset 1907

c18cbe5936b8

parent 1866

348346af6676

child 2314

f95d63e2154a

permissions

-rw-r--r--

6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair

twisti@1818	1	/*
trims@1907	2	* Copyright (c) 2003, 2007, Oracle and/or its affiliates. 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	*
trims@1907	20	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	21	* or visit www.oracle.com if you need additional information or have any
trims@1907	22	* 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	// Check the Zero stack
twisti@1866	29	if (available_words() < required_words) {
twisti@1818	30	handle_overflow(THREAD);
twisti@1818	31	return;
twisti@1818	32	}
twisti@1818	33
twisti@1818	34	// Check the ABI stack
twisti@1866	35	if (abi_stack_available(THREAD) < 0) {
twisti@1818	36	handle_overflow(THREAD);
twisti@1818	37	return;
twisti@1818	38	}
twisti@1818	39	}
twisti@1866	40
twisti@1866	41	// This method returns the amount of ABI stack available for us
twisti@1866	42	// to use under normal circumstances. Note that the returned
twisti@1866	43	// value can be negative.
twisti@1866	44	inline int ZeroStack::abi_stack_available(Thread *thread) const {
twisti@1866	45	int stack_used = thread->stack_base() - (address) &stack_used;
twisti@1866	46	int stack_free = thread->stack_size() - stack_used;
twisti@1866	47	return stack_free - shadow_pages_size();
twisti@1866	48	}