annotate src/share/vm/runtime/fieldDescriptor.cpp @ 13212:eb03a7335eb0

Use fixed instead of virtual register for target in far foreign call, since the register allocator does not support virtual registers to be used at call sites.
author Christian Wimmer <christian.wimmer@oracle.com>
date Mon, 02 Dec 2013 14:20:32 -0800
parents 359f7e70ae7f
children
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1 /*
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26 #include "classfile/systemDictionary.hpp"
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27 #include "classfile/vmSymbols.hpp"
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28 #include "memory/resourceArea.hpp"
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29 #include "memory/universe.inline.hpp"
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30 #include "oops/annotations.hpp"
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31 #include "oops/instanceKlass.hpp"
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32 #include "oops/fieldStreams.hpp"
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33 #include "runtime/fieldDescriptor.hpp"
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34 #include "runtime/handles.inline.hpp"
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35 #include "runtime/signature.hpp"
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36
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37
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38 oop fieldDescriptor::loader() const {
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39 return _cp->pool_holder()->class_loader();
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40 }
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41
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42 Symbol* fieldDescriptor::generic_signature() const {
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43 if (!has_generic_signature()) {
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44 return NULL;
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45 }
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46
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47 int idx = 0;
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48 InstanceKlass* ik = field_holder();
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49 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
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50 if (idx == _index) {
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51 return fs.generic_signature();
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52 } else {
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53 idx ++;
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54 }
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55 }
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56 assert(false, "should never happen");
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57 return NULL;
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58 }
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59
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60 AnnotationArray* fieldDescriptor::annotations() const {
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61 InstanceKlass* ik = field_holder();
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62 Array<AnnotationArray*>* md = ik->fields_annotations();
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63 if (md == NULL)
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64 return NULL;
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65 return md->at(index());
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66 }
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67
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68 AnnotationArray* fieldDescriptor::type_annotations() const {
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69 InstanceKlass* ik = field_holder();
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70 Array<AnnotationArray*>* type_annos = ik->fields_type_annotations();
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71 if (type_annos == NULL)
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72 return NULL;
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73 return type_annos->at(index());
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74 }
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75
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76 constantTag fieldDescriptor::initial_value_tag() const {
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77 return constants()->tag_at(initial_value_index());
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78 }
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79
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80 jint fieldDescriptor::int_initial_value() const {
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81 return constants()->int_at(initial_value_index());
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82 }
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83
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84 jlong fieldDescriptor::long_initial_value() const {
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85 return constants()->long_at(initial_value_index());
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86 }
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87
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88 jfloat fieldDescriptor::float_initial_value() const {
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89 return constants()->float_at(initial_value_index());
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90 }
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91
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92 jdouble fieldDescriptor::double_initial_value() const {
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93 return constants()->double_at(initial_value_index());
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94 }
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95
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96 oop fieldDescriptor::string_initial_value(TRAPS) const {
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97 return constants()->uncached_string_at(initial_value_index(), CHECK_0);
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98 }
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99
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100 void fieldDescriptor::reinitialize(InstanceKlass* ik, int index) {
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101 if (_cp.is_null() || field_holder() != ik) {
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102 _cp = constantPoolHandle(Thread::current(), ik->constants());
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103 // _cp should now reference ik's constant pool; i.e., ik is now field_holder.
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104 assert(field_holder() == ik, "must be already initialized to this class");
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105 }
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106 FieldInfo* f = ik->field(index);
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107 assert(!f->is_internal(), "regular Java fields only");
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108
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109 _access_flags = accessFlags_from(f->access_flags());
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110 guarantee(f->name_index() != 0 && f->signature_index() != 0, "bad constant pool index for fieldDescriptor");
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111 _index = index;
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112 verify();
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113 }
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114
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115 #ifndef PRODUCT
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116
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117 void fieldDescriptor::verify() const {
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118 if (_cp.is_null()) {
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119 assert(_index == badInt, "constructor must be called"); // see constructor
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120 } else {
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121 assert(_index >= 0, "good index");
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122 assert(_index < field_holder()->java_fields_count(), "oob");
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123 }
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124 }
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125
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126 void fieldDescriptor::print_on(outputStream* st) const {
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127 access_flags().print_on(st);
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128 name()->print_value_on(st);
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129 st->print(" ");
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130 signature()->print_value_on(st);
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131 st->print(" @%d ", offset());
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132 if (WizardMode && has_initial_value()) {
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133 st->print("(initval ");
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134 constantTag t = initial_value_tag();
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135 if (t.is_int()) {
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136 st->print("int %d)", int_initial_value());
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137 } else if (t.is_long()){
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138 st->print_jlong(long_initial_value());
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139 } else if (t.is_float()){
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140 st->print("float %f)", float_initial_value());
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141 } else if (t.is_double()){
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142 st->print("double %lf)", double_initial_value());
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143 }
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144 }
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145 }
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146
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147 void fieldDescriptor::print_on_for(outputStream* st, oop obj) {
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148 print_on(st);
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149 BasicType ft = field_type();
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150 jint as_int = 0;
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151 switch (ft) {
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152 case T_BYTE:
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153 as_int = (jint)obj->byte_field(offset());
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154 st->print(" %d", obj->byte_field(offset()));
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155 break;
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156 case T_CHAR:
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157 as_int = (jint)obj->char_field(offset());
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158 {
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159 jchar c = obj->char_field(offset());
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160 as_int = c;
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161 st->print(" %c %d", isprint(c) ? c : ' ', c);
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162 }
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163 break;
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164 case T_DOUBLE:
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165 st->print(" %lf", obj->double_field(offset()));
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166 break;
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167 case T_FLOAT:
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168 as_int = obj->int_field(offset());
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169 st->print(" %f", obj->float_field(offset()));
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170 break;
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171 case T_INT:
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172 as_int = obj->int_field(offset());
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173 st->print(" %d", obj->int_field(offset()));
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174 break;
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175 case T_LONG:
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176 st->print(" ");
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177 st->print_jlong(obj->long_field(offset()));
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178 break;
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179 case T_SHORT:
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180 as_int = obj->short_field(offset());
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181 st->print(" %d", obj->short_field(offset()));
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182 break;
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183 case T_BOOLEAN:
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184 as_int = obj->bool_field(offset());
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185 st->print(" %s", obj->bool_field(offset()) ? "true" : "false");
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186 break;
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187 case T_ARRAY:
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188 st->print(" ");
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189 NOT_LP64(as_int = obj->int_field(offset()));
0
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190 obj->obj_field(offset())->print_value_on(st);
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191 break;
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192 case T_OBJECT:
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193 st->print(" ");
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194 NOT_LP64(as_int = obj->int_field(offset()));
0
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195 obj->obj_field(offset())->print_value_on(st);
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196 break;
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197 default:
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198 ShouldNotReachHere();
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199 break;
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200 }
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201 // Print a hint as to the underlying integer representation. This can be wrong for
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202 // pointers on an LP64 machine
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203 if (ft == T_LONG || ft == T_DOUBLE LP64_ONLY(|| !is_java_primitive(ft)) ) {
0
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204 st->print(" (%x %x)", obj->int_field(offset()), obj->int_field(offset()+sizeof(jint)));
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205 } else if (as_int < 0 || as_int > 9) {
0
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206 st->print(" (%x)", as_int);
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207 }
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208 }
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209
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210 #endif /* PRODUCT */