annotate src/cpu/ppc/vm/frame_ppc.cpp @ 14433:018b357638aa

8028514: PPC64: Fix C++ Interpreter after '7195622: CheckUnhandledOops has limited usefulness now' Summary: fix CPP-interpreter after CheckUnhandledOops was re-enabled in the fastdebug build Reviewed-by: kvn, dholmes, lfoltan
author simonis
date Tue, 19 Nov 2013 11:53:58 -0800
parents ec28f9c041ff
children 67fa91961822
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1 /*
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2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * Copyright 2012, 2013 SAP AG. All rights reserved.
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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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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21 * or visit www.oracle.com if you need additional information or have any
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22 * questions.
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23 *
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24 */
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25
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26 #include "precompiled.hpp"
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27 #include "interpreter/interpreter.hpp"
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28 #include "memory/resourceArea.hpp"
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29 #include "oops/markOop.hpp"
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30 #include "oops/method.hpp"
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31 #include "oops/oop.inline.hpp"
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32 #include "runtime/frame.inline.hpp"
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33 #include "runtime/handles.inline.hpp"
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34 #include "runtime/javaCalls.hpp"
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35 #include "runtime/monitorChunk.hpp"
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36 #include "runtime/signature.hpp"
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37 #include "runtime/stubCodeGenerator.hpp"
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38 #include "runtime/stubRoutines.hpp"
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39 #include "vmreg_ppc.inline.hpp"
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40 #ifdef COMPILER1
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41 #include "c1/c1_Runtime1.hpp"
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42 #include "runtime/vframeArray.hpp"
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43 #endif
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44
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45 #ifndef CC_INTERP
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46 #error "CC_INTERP must be defined on PPC64"
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47 #endif
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48
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49 #ifdef ASSERT
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50 void RegisterMap::check_location_valid() {
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51 }
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52 #endif // ASSERT
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53
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54 bool frame::safe_for_sender(JavaThread *thread) {
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55 bool safe = false;
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56 address cursp = (address)sp();
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57 address curfp = (address)fp();
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58 if ((cursp != NULL && curfp != NULL &&
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59 (cursp <= thread->stack_base() && cursp >= thread->stack_base() - thread->stack_size())) &&
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60 (curfp <= thread->stack_base() && curfp >= thread->stack_base() - thread->stack_size())) {
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61 safe = true;
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62 }
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63 return safe;
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64 }
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65
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66 bool frame::is_interpreted_frame() const {
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67 return Interpreter::contains(pc());
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68 }
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69
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70 frame frame::sender_for_entry_frame(RegisterMap *map) const {
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71 assert(map != NULL, "map must be set");
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72 // Java frame called from C; skip all C frames and return top C
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73 // frame of that chunk as the sender.
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74 JavaFrameAnchor* jfa = entry_frame_call_wrapper()->anchor();
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75 assert(!entry_frame_is_first(), "next Java fp must be non zero");
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76 assert(jfa->last_Java_sp() > _sp, "must be above this frame on stack");
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77 map->clear();
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78 assert(map->include_argument_oops(), "should be set by clear");
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79
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80 if (jfa->last_Java_pc() != NULL) {
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81 frame fr(jfa->last_Java_sp(), jfa->last_Java_pc());
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82 return fr;
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83 }
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84 // Last_java_pc is not set, if we come here from compiled code. The
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85 // constructor retrieves the PC from the stack.
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86 frame fr(jfa->last_Java_sp());
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87 return fr;
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88 }
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89
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90 frame frame::sender_for_interpreter_frame(RegisterMap *map) const {
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91 // Pass callers initial_caller_sp as unextended_sp.
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92 return frame(sender_sp(), sender_pc(), (intptr_t*)((parent_ijava_frame_abi *)callers_abi())->initial_caller_sp);
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93 }
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94
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95 frame frame::sender_for_compiled_frame(RegisterMap *map) const {
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96 assert(map != NULL, "map must be set");
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97
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98 // Frame owned by compiler.
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99 address pc = *compiled_sender_pc_addr(_cb);
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100 frame caller(compiled_sender_sp(_cb), pc);
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101
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102 // Now adjust the map.
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103
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104 // Get the rest.
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105 if (map->update_map()) {
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106 // Tell GC to use argument oopmaps for some runtime stubs that need it.
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107 map->set_include_argument_oops(_cb->caller_must_gc_arguments(map->thread()));
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108 if (_cb->oop_maps() != NULL) {
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109 OopMapSet::update_register_map(this, map);
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110 }
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111 }
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112
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113 return caller;
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114 }
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115
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116 intptr_t* frame::compiled_sender_sp(CodeBlob* cb) const {
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117 return sender_sp();
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118 }
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119
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120 address* frame::compiled_sender_pc_addr(CodeBlob* cb) const {
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121 return sender_pc_addr();
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122 }
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123
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124 frame frame::sender(RegisterMap* map) const {
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125 // Default is we do have to follow them. The sender_for_xxx will
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126 // update it accordingly.
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127 map->set_include_argument_oops(false);
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128
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129 if (is_entry_frame()) return sender_for_entry_frame(map);
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130 if (is_interpreted_frame()) return sender_for_interpreter_frame(map);
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131 assert(_cb == CodeCache::find_blob(pc()),"Must be the same");
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132
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133 if (_cb != NULL) {
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134 return sender_for_compiled_frame(map);
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135 }
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136 // Must be native-compiled frame, i.e. the marshaling code for native
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137 // methods that exists in the core system.
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138 return frame(sender_sp(), sender_pc());
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139 }
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140
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141 void frame::patch_pc(Thread* thread, address pc) {
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142 if (TracePcPatching) {
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143 tty->print_cr("patch_pc at address " PTR_FORMAT " [" PTR_FORMAT " -> " PTR_FORMAT "]",
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144 &((address*) _sp)[-1], ((address*) _sp)[-1], pc);
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145 }
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146 own_abi()->lr = (uint64_t)pc;
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147 _cb = CodeCache::find_blob(pc);
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148 if (_cb != NULL && _cb->is_nmethod() && ((nmethod*)_cb)->is_deopt_pc(_pc)) {
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149 address orig = (((nmethod*)_cb)->get_original_pc(this));
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150 assert(orig == _pc, "expected original to be stored before patching");
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151 _deopt_state = is_deoptimized;
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152 // Leave _pc as is.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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153 } else {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
154 _deopt_state = not_deoptimized;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
155 _pc = pc;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
156 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
157 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
158
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
159 void frame::pd_gc_epilog() {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
160 if (is_interpreted_frame()) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
161 // Set constant pool cache entry for interpreter.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
162 Method* m = interpreter_frame_method();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
163
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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164 *interpreter_frame_cpoolcache_addr() = m->constants()->cache();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
165 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
166 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
167
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
168 bool frame::is_interpreted_frame_valid(JavaThread* thread) const {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
169 // Is there anything to do?
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
170 assert(is_interpreted_frame(), "Not an interpreted frame");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
171 return true;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
172 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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173
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174 BasicType frame::interpreter_frame_result(oop* oop_result, jvalue* value_result) {
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175 assert(is_interpreted_frame(), "interpreted frame expected");
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176 Method* method = interpreter_frame_method();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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177 BasicType type = method->result_type();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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178
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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179 #ifdef CC_INTERP
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180 if (method->is_native()) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
181 // Prior to calling into the runtime to notify the method exit the possible
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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182 // result value is saved into the interpreter frame.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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183 interpreterState istate = get_interpreterState();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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184 address lresult = (address)istate + in_bytes(BytecodeInterpreter::native_lresult_offset());
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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185 address fresult = (address)istate + in_bytes(BytecodeInterpreter::native_fresult_offset());
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186
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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187 switch (method->result_type()) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
188 case T_OBJECT:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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189 case T_ARRAY: {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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190 oop* obj_p = *(oop**)lresult;
14433
018b357638aa 8028514: PPC64: Fix C++ Interpreter after '7195622: CheckUnhandledOops has limited usefulness now'
simonis
parents: 14408
diff changeset
191 oop obj = (obj_p == NULL) ? (oop)NULL : *obj_p;
14408
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192 assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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193 *oop_result = obj;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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194 break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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195 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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196 // We use std/stfd to store the values.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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197 case T_BOOLEAN : value_result->z = (jboolean) *(unsigned long*)lresult; break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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198 case T_INT : value_result->i = (jint) *(long*)lresult; break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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199 case T_CHAR : value_result->c = (jchar) *(unsigned long*)lresult; break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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200 case T_SHORT : value_result->s = (jshort) *(long*)lresult; break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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201 case T_BYTE : value_result->z = (jbyte) *(long*)lresult; break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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202 case T_LONG : value_result->j = (jlong) *(long*)lresult; break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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203 case T_FLOAT : value_result->f = (jfloat) *(double*)fresult; break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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204 case T_DOUBLE : value_result->d = (jdouble) *(double*)fresult; break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
205 case T_VOID : /* Nothing to do */ break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
206 default : ShouldNotReachHere();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
207 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
208 } else {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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209 intptr_t* tos_addr = interpreter_frame_tos_address();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
210 switch (method->result_type()) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
211 case T_OBJECT:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
212 case T_ARRAY: {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
213 oop obj = *(oop*)tos_addr;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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214 assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
215 *oop_result = obj;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
216 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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217 case T_BOOLEAN : value_result->z = (jboolean) *(jint*)tos_addr; break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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218 case T_BYTE : value_result->b = (jbyte) *(jint*)tos_addr; break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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219 case T_CHAR : value_result->c = (jchar) *(jint*)tos_addr; break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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220 case T_SHORT : value_result->s = (jshort) *(jint*)tos_addr; break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
221 case T_INT : value_result->i = *(jint*)tos_addr; break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
222 case T_LONG : value_result->j = *(jlong*)tos_addr; break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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223 case T_FLOAT : value_result->f = *(jfloat*)tos_addr; break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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224 case T_DOUBLE : value_result->d = *(jdouble*)tos_addr; break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
225 case T_VOID : /* Nothing to do */ break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
226 default : ShouldNotReachHere();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
227 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
228 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
229 #else
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
230 Unimplemented();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
231 #endif
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
232 return type;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
233 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
234
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
235 #ifndef PRODUCT
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
236
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
237 void frame::describe_pd(FrameValues& values, int frame_no) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
238 if (is_interpreted_frame()) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
239 #ifdef CC_INTERP
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
240 interpreterState istate = get_interpreterState();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
241 values.describe(frame_no, (intptr_t*)istate, "istate");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
242 values.describe(frame_no, (intptr_t*)&(istate->_thread), " thread");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
243 values.describe(frame_no, (intptr_t*)&(istate->_bcp), " bcp");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
244 values.describe(frame_no, (intptr_t*)&(istate->_locals), " locals");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
245 values.describe(frame_no, (intptr_t*)&(istate->_constants), " constants");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
246 values.describe(frame_no, (intptr_t*)&(istate->_method), err_msg(" method = %s", istate->_method->name_and_sig_as_C_string()));
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
247 values.describe(frame_no, (intptr_t*)&(istate->_mdx), " mdx");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
248 values.describe(frame_no, (intptr_t*)&(istate->_stack), " stack");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
249 values.describe(frame_no, (intptr_t*)&(istate->_msg), err_msg(" msg = %s", BytecodeInterpreter::C_msg(istate->_msg)));
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
250 values.describe(frame_no, (intptr_t*)&(istate->_result), " result");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
251 values.describe(frame_no, (intptr_t*)&(istate->_prev_link), " prev_link");
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diff changeset
252 values.describe(frame_no, (intptr_t*)&(istate->_oop_temp), " oop_temp");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
253 values.describe(frame_no, (intptr_t*)&(istate->_stack_base), " stack_base");
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diff changeset
254 values.describe(frame_no, (intptr_t*)&(istate->_stack_limit), " stack_limit");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
255 values.describe(frame_no, (intptr_t*)&(istate->_monitor_base), " monitor_base");
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parents:
diff changeset
256 values.describe(frame_no, (intptr_t*)&(istate->_frame_bottom), " frame_bottom");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
257 values.describe(frame_no, (intptr_t*)&(istate->_last_Java_pc), " last_Java_pc");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
258 values.describe(frame_no, (intptr_t*)&(istate->_last_Java_fp), " last_Java_fp");
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diff changeset
259 values.describe(frame_no, (intptr_t*)&(istate->_last_Java_sp), " last_Java_sp");
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diff changeset
260 values.describe(frame_no, (intptr_t*)&(istate->_self_link), " self_link");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
261 values.describe(frame_no, (intptr_t*)&(istate->_native_fresult), " native_fresult");
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parents:
diff changeset
262 values.describe(frame_no, (intptr_t*)&(istate->_native_lresult), " native_lresult");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
263 #else
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
264 Unimplemented();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
265 #endif
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
266 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
267 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
268 #endif
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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269
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
270 void frame::adjust_unextended_sp() {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
271 // If we are returning to a compiled MethodHandle call site, the
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
272 // saved_fp will in fact be a saved value of the unextended SP. The
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
273 // simplest way to tell whether we are returning to such a call site
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
274 // is as follows:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
275
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
276 if (is_compiled_frame() && false /*is_at_mh_callsite()*/) { // TODO PPC port
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
277 // If the sender PC is a deoptimization point, get the original
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
278 // PC. For MethodHandle call site the unextended_sp is stored in
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
279 // saved_fp.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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280 _unextended_sp = _fp - _cb->frame_size();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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281
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
282 #ifdef ASSERT
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
283 nmethod *sender_nm = _cb->as_nmethod_or_null();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
284 assert(sender_nm && *_sp == *_unextended_sp, "backlink changed");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
285
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
286 intptr_t* sp = _unextended_sp; // check if stack can be walked from here
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
287 for (int x = 0; x < 5; ++x) { // check up to a couple of backlinks
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
288 intptr_t* prev_sp = *(intptr_t**)sp;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
289 if (prev_sp == 0) break; // end of stack
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
290 assert(prev_sp>sp, "broken stack");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
291 sp = prev_sp;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
292 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
293
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
294 if (sender_nm->is_deopt_mh_entry(_pc)) { // checks for deoptimization
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
295 address original_pc = sender_nm->get_original_pc(this);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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296 assert(sender_nm->insts_contains(original_pc), "original PC must be in nmethod");
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297 assert(sender_nm->is_method_handle_return(original_pc), "must be");
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298 }
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299 #endif
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300 }
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301 }
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302
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303 intptr_t *frame::initial_deoptimization_info() {
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304 // unused... but returns fp() to minimize changes introduced by 7087445
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305 return fp();
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306 }