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1010
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1 /*
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2 * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * Copyright 2008, 2009 Red Hat, Inc.
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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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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21 * CA 95054 USA or visit www.sun.com if you need additional information or
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22 * have any questions.
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23 *
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24 */
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25
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26 class ZeroEntry {
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27 public:
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28 ZeroEntry() {
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29 ShouldNotCallThis();
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30 }
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31
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32 private:
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33 address _entry_point;
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34
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35 public:
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36 address entry_point() const {
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37 return _entry_point;
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38 }
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39 void set_entry_point(address entry_point) {
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40 _entry_point = entry_point;
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41 }
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42
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43 private:
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44 typedef void (*NormalEntryFunc)(methodOop method,
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45 intptr_t base_pc,
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46 TRAPS);
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47 typedef void (*OSREntryFunc)(methodOop method,
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48 address osr_buf,
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49 intptr_t base_pc,
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50 TRAPS);
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51
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52 public:
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53 void invoke(methodOop method, TRAPS) const {
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54 ((NormalEntryFunc) entry_point())(method, (intptr_t) this, THREAD);
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55 }
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56 void invoke_osr(methodOop method, address osr_buf, TRAPS) const {
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57 ((OSREntryFunc) entry_point())(method, osr_buf, (intptr_t) this, THREAD);
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58 }
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59
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60 public:
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61 static ByteSize entry_point_offset() {
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62 return byte_offset_of(ZeroEntry, _entry_point);
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63 }
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64 };
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