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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, 2010 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 // | ... |
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27 // +--------------------+ ------------------
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28 // | parameter n-1 | low addresses
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29 // | ... |
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30 // | parameter 0 |
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31 // | call_wrapper |
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32 // | frame_type |
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33 // | next_frame | high addresses
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34 // +--------------------+ ------------------
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35 // | ... |
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36
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37 class EntryFrame : public ZeroFrame {
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38 private:
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39 EntryFrame() : ZeroFrame() {
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40 ShouldNotCallThis();
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41 }
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42
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43 protected:
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44 enum Layout {
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45 call_wrapper_off = jf_header_words,
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46 header_words
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47 };
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48
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49 public:
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50 static EntryFrame *build(const intptr_t* parameters,
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51 int parameter_words,
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52 JavaCallWrapper* call_wrapper,
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53 TRAPS);
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54 public:
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55 JavaCallWrapper *call_wrapper() const {
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56 return (JavaCallWrapper *) value_of_word(call_wrapper_off);
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57 }
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58
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59 public:
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60 void identify_word(int frame_index,
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61 int offset,
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62 char* fieldbuf,
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63 char* valuebuf,
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64 int buflen) const;
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65 };
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