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1 /*
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2 * Copyright 1999-2007 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 private:
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26 void pd_initialize() { _anchor.clear(); }
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27
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28 frame pd_last_frame() {
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29 assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
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30 if (_anchor.last_Java_pc() != NULL) {
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31 return frame(_anchor.last_Java_sp(), _anchor.last_Java_fp(), _anchor.last_Java_pc());
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32 } else {
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33 // This will pick up pc from sp
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34 return frame(_anchor.last_Java_sp(), _anchor.last_Java_fp());
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35 }
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36 }
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37
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38 public:
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39 // Mutators are highly dangerous....
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40 intptr_t* last_Java_fp() { return _anchor.last_Java_fp(); }
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41 void set_last_Java_fp(intptr_t* fp) { _anchor.set_last_Java_fp(fp); }
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42
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43 void set_base_of_stack_pointer(intptr_t* base_sp) {}
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44
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45 static ByteSize last_Java_fp_offset() {
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46 return byte_offset_of(JavaThread, _anchor) + JavaFrameAnchor::last_Java_fp_offset();
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47 }
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48
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49 intptr_t* base_of_stack_pointer() { return NULL; }
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50 void record_base_of_stack_pointer() {}
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51
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52 bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext,
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53 bool isInJava);
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54
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55 // These routines are only used on cpu architectures that
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56 // have separate register stacks (Itanium).
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57 static bool register_stack_overflow() { return false; }
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58 static void enable_register_stack_guard() {}
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59 static void disable_register_stack_guard() {}
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