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annotate src/cpu/sparc/vm/icache_sparc.cpp @ 6812:988bf00cc564

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7200261: G1: Liveness counting inconsistencies during marking verification Summary: The clipping code in the routine that sets the bits for a range of cards, in the liveness accounting verification code was incorrect. It set all the bits in the card bitmap from the given starting index which would lead to spurious marking verification failures. Reviewed-by: brutisso, jwilhelm, jmasa
author johnc
date Thu, 27 Sep 2012 15:44:01 -0700
parents f95d63e2154a
children f0c2369fda5a
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1 /*
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2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26 #include "assembler_sparc.inline.hpp"
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27 #include "runtime/icache.hpp"
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29 #define __ _masm->
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31 void ICacheStubGenerator::generate_icache_flush(
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32 ICache::flush_icache_stub_t* flush_icache_stub
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33 ) {
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34 StubCodeMark mark(this, "ICache", "flush_icache_stub");
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35 address start = __ pc();
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36
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37 Label L;
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38 __ bind(L);
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39 __ flush( O0, G0 );
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40 __ deccc( O1 );
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41 __ br(Assembler::positive, false, Assembler::pn, L);
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42 __ delayed()->inc( O0, 8 );
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43 __ retl(false);
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44 __ delayed()->mov( O2, O0 ); // handshake with caller to make sure it happened!
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45
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46 // Must be set here so StubCodeMark destructor can call the flush stub.
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47 *flush_icache_stub = (ICache::flush_icache_stub_t)start;
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48 };
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49
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50 #undef __