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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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25 // This file holds platform-independant bodies of inline functions for frames. |
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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" |