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1 /* |
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2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
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3 * Copyright (c) 2016 SAP SE. All rights reserved. |
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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5 * |
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6 * This code is free software; you can redistribute it and/or modify it |
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7 * under the terms of the GNU General Public License version 2 only, as |
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8 * published by the Free Software Foundation. |
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9 * |
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10 * This code is distributed in the hope that it will be useful, but WITHOUT |
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 * version 2 for more details (a copy is included in the LICENSE file that |
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14 * accompanied this code). |
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15 * |
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16 * You should have received a copy of the GNU General Public License version |
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17 * 2 along with this work; if not, write to the Free Software Foundation, |
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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19 * |
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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. |
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23 * |
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24 */ |
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25 |
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26 #ifndef CPU_S390_VM_ICACHE_S390_HPP |
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27 #define CPU_S390_VM_ICACHE_S390_HPP |
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28 |
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29 // Interface for updating the instruction cache. Whenever the VM modifies |
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30 // code, part of the processor instruction cache potentially has to be flushed. |
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31 |
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32 class ICache : public AbstractICache { |
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33 public: |
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34 enum { |
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35 stub_size = 0, // Size of the icache flush stub in bytes. |
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36 line_size = 2, // There is no explicit flushing on z/Architecture. |
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37 // This value is ignored by the flush stub (a nop !). |
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38 log2_line_size = 1 |
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39 }; |
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40 |
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41 // Use default implementation. |
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42 }; |
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43 |
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44 #endif // CPU_S390_VM_ICACHE_S390_HPP |