Mercurial > hg > truffle
annotate src/cpu/zero/vm/stack_zero.inline.hpp @ 5277:1767613f8a4a
fixed regression: loop safepoints cannot be placed inside snippets
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 23 Apr 2012 21:27:48 +0200 |
parents | f95d63e2154a |
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rev | line source |
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1383 | 1 /* |
1972 | 2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
1383 | 3 * Copyright 2010 Red Hat, Inc. |
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
5 * | |
6 * This code is free software; you can redistribute it and/or modify it | |
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8 * published by the Free Software Foundation. | |
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13 * version 2 for more details (a copy is included in the LICENSE file that | |
14 * accompanied this code). | |
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16 * You should have received a copy of the GNU General Public License version | |
17 * 2 along with this work; if not, write to the Free Software Foundation, | |
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
1383 | 23 * |
24 */ | |
25 | |
1972 | 26 #ifndef CPU_ZERO_VM_STACK_ZERO_INLINE_HPP |
27 #define CPU_ZERO_VM_STACK_ZERO_INLINE_HPP | |
28 | |
29 #include "runtime/thread.hpp" | |
30 #include "stack_zero.hpp" | |
31 | |
1383 | 32 // This function should match SharkStack::CreateStackOverflowCheck |
33 inline void ZeroStack::overflow_check(int required_words, TRAPS) { | |
34 // Check the Zero stack | |
1511 | 35 if (available_words() < required_words) { |
1383 | 36 handle_overflow(THREAD); |
37 return; | |
38 } | |
39 | |
40 // Check the ABI stack | |
1511 | 41 if (abi_stack_available(THREAD) < 0) { |
1383 | 42 handle_overflow(THREAD); |
43 return; | |
44 } | |
45 } | |
1511 | 46 |
47 // This method returns the amount of ABI stack available for us | |
48 // to use under normal circumstances. Note that the returned | |
49 // value can be negative. | |
50 inline int ZeroStack::abi_stack_available(Thread *thread) const { | |
51 int stack_used = thread->stack_base() - (address) &stack_used; | |
52 int stack_free = thread->stack_size() - stack_used; | |
53 return stack_free - shadow_pages_size(); | |
54 } | |
1972 | 55 |
56 #endif // CPU_ZERO_VM_STACK_ZERO_INLINE_HPP |