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1 /*
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2 * Copyright 1997-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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605
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25 // This file holds platform-independent bodies of inline functions for frames.
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0
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26
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27 // Note: The bcx usually contains the bcp; however during GC it contains the bci
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28 // (changed by gc_prologue() and gc_epilogue()) to be methodOop position
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29 // independent. These accessors make sure the correct value is returned
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30 // by testing the range of the bcx value. bcp's are guaranteed to be above
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31 // max_method_code_size, since methods are always allocated in OldSpace and
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32 // Eden is allocated before OldSpace.
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33 //
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34 // The bcp is accessed sometimes during GC for ArgumentDescriptors; than
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35 // the correct translation has to be performed (was bug).
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36
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37 inline bool frame::is_bci(intptr_t bcx) {
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38 #ifdef _LP64
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39 return ((uintptr_t) bcx) <= ((uintptr_t) max_method_code_size) ;
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40 #else
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41 return 0 <= bcx && bcx <= max_method_code_size;
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42 #endif
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43 }
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44
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45 inline bool frame::is_entry_frame() const {
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46 return StubRoutines::returns_to_call_stub(pc());
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47 }
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48
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49 inline bool frame::is_first_frame() const {
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50 return is_entry_frame() && entry_frame_is_first();
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51 }
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52
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53 // here are the platform-dependent bodies:
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54
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55 # include "incls/_frame_pd.inline.hpp.incl"
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