Mercurial > hg > truffle
annotate src/share/vm/prims/methodHandles.hpp @ 3678:9482471a7dfa
IdealGraphVisualizer: add a workaround to fix layouting of the QuickSearch combobar with the GTK look and feel
author | Peter Hofer <peter.hofer@jku.at> |
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date | Mon, 21 Nov 2011 15:54:32 +0100 |
parents | 81d815b05abb |
children | c26de9aef2ed |
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710 | 1 /* |
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2 * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved. |
710 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
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. |
710 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_PRIMS_METHODHANDLES_HPP |
26 #define SHARE_VM_PRIMS_METHODHANDLES_HPP | |
27 | |
28 #include "classfile/javaClasses.hpp" | |
29 #include "classfile/vmSymbols.hpp" | |
30 #include "runtime/frame.inline.hpp" | |
31 #include "runtime/globals.hpp" | |
32 #include "runtime/interfaceSupport.hpp" | |
33 | |
710 | 34 class MacroAssembler; |
35 class Label; | |
36 class MethodHandleEntry; | |
37 | |
38 class MethodHandles: AllStatic { | |
39 // JVM support for MethodHandle, MethodType, and related types | |
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40 // in java.lang.invoke and sun.invoke. |
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41 // See also javaClasses for layouts java_lang_invoke_Method{Handle,Type,Type::Form}. |
710 | 42 public: |
43 enum EntryKind { | |
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44 _raise_exception, // stub for error generation from other stubs |
710 | 45 _invokestatic_mh, // how a MH emulates invokestatic |
46 _invokespecial_mh, // ditto for the other invokes... | |
47 _invokevirtual_mh, | |
48 _invokeinterface_mh, | |
49 _bound_ref_mh, // reference argument is bound | |
50 _bound_int_mh, // int argument is bound (via an Integer or Float) | |
51 _bound_long_mh, // long argument is bound (via a Long or Double) | |
52 _bound_ref_direct_mh, // same as above, with direct linkage to methodOop | |
53 _bound_int_direct_mh, | |
54 _bound_long_direct_mh, | |
55 | |
56 _adapter_mh_first, // adapter sequence goes here... | |
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57 _adapter_retype_only = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_RETYPE_ONLY, |
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58 _adapter_retype_raw = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_RETYPE_RAW, |
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59 _adapter_check_cast = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_CHECK_CAST, |
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60 _adapter_prim_to_prim = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_PRIM, |
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61 _adapter_ref_to_prim = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_REF_TO_PRIM, |
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62 _adapter_prim_to_ref = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_REF, |
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63 _adapter_swap_args = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_SWAP_ARGS, |
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64 _adapter_rot_args = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_ROT_ARGS, |
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65 _adapter_dup_args = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_DUP_ARGS, |
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66 _adapter_drop_args = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_DROP_ARGS, |
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67 _adapter_collect_args = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_COLLECT_ARGS, |
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68 _adapter_spread_args = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_SPREAD_ARGS, |
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69 _adapter_fold_args = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_FOLD_ARGS, |
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70 _adapter_unused_13 = _adapter_mh_first + 13, //hole in the CONV_OP enumeration |
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71 _adapter_mh_last = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::CONV_OP_LIMIT - 1, |
710 | 72 |
73 // Optimized adapter types | |
74 | |
75 // argument list reordering | |
76 _adapter_opt_swap_1, | |
77 _adapter_opt_swap_2, | |
78 _adapter_opt_rot_1_up, | |
79 _adapter_opt_rot_1_down, | |
80 _adapter_opt_rot_2_up, | |
81 _adapter_opt_rot_2_down, | |
82 // primitive single to single: | |
83 _adapter_opt_i2i, // i2c, i2z, i2b, i2s | |
84 // primitive double to single: | |
85 _adapter_opt_l2i, | |
86 _adapter_opt_d2f, | |
87 // primitive single to double: | |
88 _adapter_opt_i2l, | |
89 _adapter_opt_f2d, | |
90 // conversion between floating point and integer type is handled by Java | |
91 | |
92 // reference to primitive: | |
93 _adapter_opt_unboxi, | |
94 _adapter_opt_unboxl, | |
95 | |
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96 // %% Maybe tame the following with a VM_SYMBOLS_DO type macro? |
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97 |
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98 // how a blocking adapter returns (platform-dependent) |
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99 _adapter_opt_return_ref, |
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100 _adapter_opt_return_int, |
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101 _adapter_opt_return_long, |
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102 _adapter_opt_return_float, |
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103 _adapter_opt_return_double, |
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104 _adapter_opt_return_void, |
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105 _adapter_opt_return_S0_ref, // return ref to S=0 (last slot) |
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106 _adapter_opt_return_S1_ref, // return ref to S=1 (2nd-to-last slot) |
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107 _adapter_opt_return_S2_ref, |
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108 _adapter_opt_return_S3_ref, |
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109 _adapter_opt_return_S4_ref, |
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110 _adapter_opt_return_S5_ref, |
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111 _adapter_opt_return_any, // dynamically select r/i/l/f/d |
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112 _adapter_opt_return_FIRST = _adapter_opt_return_ref, |
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113 _adapter_opt_return_LAST = _adapter_opt_return_any, |
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114 |
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115 // spreading (array length cases 0, 1, ...) |
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116 _adapter_opt_spread_0, // spread empty array to N=0 arguments |
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117 _adapter_opt_spread_1_ref, // spread Object[] to N=1 argument |
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118 _adapter_opt_spread_2_ref, // spread Object[] to N=2 arguments |
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119 _adapter_opt_spread_3_ref, // spread Object[] to N=3 arguments |
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120 _adapter_opt_spread_4_ref, // spread Object[] to N=4 arguments |
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121 _adapter_opt_spread_5_ref, // spread Object[] to N=5 arguments |
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122 _adapter_opt_spread_ref, // spread Object[] to N arguments |
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123 _adapter_opt_spread_byte, // spread byte[] or boolean[] to N arguments |
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124 _adapter_opt_spread_char, // spread char[], etc., to N arguments |
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125 _adapter_opt_spread_short, // spread short[], etc., to N arguments |
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126 _adapter_opt_spread_int, // spread int[], short[], etc., to N arguments |
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127 _adapter_opt_spread_long, // spread long[] to N arguments |
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128 _adapter_opt_spread_float, // spread float[] to N arguments |
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129 _adapter_opt_spread_double, // spread double[] to N arguments |
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130 _adapter_opt_spread_FIRST = _adapter_opt_spread_0, |
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131 _adapter_opt_spread_LAST = _adapter_opt_spread_double, |
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132 |
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133 // blocking filter/collect conversions |
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134 // These collect N arguments and replace them (at slot S) by a return value |
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135 // which is passed to the final target, along with the unaffected arguments. |
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136 // collect_{N}_{T} collects N arguments at any position into a T value |
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137 // collect_{N}_S{S}_{T} collects N arguments at slot S into a T value |
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138 // collect_{T} collects any number of arguments at any position |
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139 // filter_S{S}_{T} is the same as collect_1_S{S}_{T} (a unary collection) |
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140 // (collect_2 is also usable as a filter, with long or double arguments) |
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141 _adapter_opt_collect_ref, // combine N arguments, replace with a reference |
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142 _adapter_opt_collect_int, // combine N arguments, replace with an int, short, etc. |
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143 _adapter_opt_collect_long, // combine N arguments, replace with a long |
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144 _adapter_opt_collect_float, // combine N arguments, replace with a float |
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145 _adapter_opt_collect_double, // combine N arguments, replace with a double |
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146 _adapter_opt_collect_void, // combine N arguments, replace with nothing |
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147 // if there is a small fixed number to push, do so without a loop: |
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148 _adapter_opt_collect_0_ref, // collect N=0 arguments, insert a reference |
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149 _adapter_opt_collect_1_ref, // collect N=1 argument, replace with a reference |
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150 _adapter_opt_collect_2_ref, // combine N=2 arguments, replace with a reference |
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151 _adapter_opt_collect_3_ref, // combine N=3 arguments, replace with a reference |
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152 _adapter_opt_collect_4_ref, // combine N=4 arguments, replace with a reference |
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153 _adapter_opt_collect_5_ref, // combine N=5 arguments, replace with a reference |
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154 // filters are an important special case because they never move arguments: |
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155 _adapter_opt_filter_S0_ref, // filter N=1 argument at S=0, replace with a reference |
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156 _adapter_opt_filter_S1_ref, // filter N=1 argument at S=1, replace with a reference |
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157 _adapter_opt_filter_S2_ref, // filter N=1 argument at S=2, replace with a reference |
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158 _adapter_opt_filter_S3_ref, // filter N=1 argument at S=3, replace with a reference |
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159 _adapter_opt_filter_S4_ref, // filter N=1 argument at S=4, replace with a reference |
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160 _adapter_opt_filter_S5_ref, // filter N=1 argument at S=5, replace with a reference |
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161 // these move arguments, but they are important for boxing |
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162 _adapter_opt_collect_2_S0_ref, // combine last N=2 arguments, replace with a reference |
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163 _adapter_opt_collect_2_S1_ref, // combine N=2 arguments at S=1, replace with a reference |
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164 _adapter_opt_collect_2_S2_ref, // combine N=2 arguments at S=2, replace with a reference |
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165 _adapter_opt_collect_2_S3_ref, // combine N=2 arguments at S=3, replace with a reference |
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166 _adapter_opt_collect_2_S4_ref, // combine N=2 arguments at S=4, replace with a reference |
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167 _adapter_opt_collect_2_S5_ref, // combine N=2 arguments at S=5, replace with a reference |
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168 _adapter_opt_collect_FIRST = _adapter_opt_collect_ref, |
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169 _adapter_opt_collect_LAST = _adapter_opt_collect_2_S5_ref, |
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170 |
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171 // blocking folding conversions |
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172 // these are like collects, but retain all the N arguments for the final target |
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173 //_adapter_opt_fold_0_ref, // same as _adapter_opt_collect_0_ref |
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174 // fold_{N}_{T} processes N arguments at any position into a T value, which it inserts |
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175 // fold_{T} processes any number of arguments at any position |
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176 _adapter_opt_fold_ref, // process N arguments, prepend a reference |
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177 _adapter_opt_fold_int, // process N arguments, prepend an int, short, etc. |
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178 _adapter_opt_fold_long, // process N arguments, prepend a long |
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179 _adapter_opt_fold_float, // process N arguments, prepend a float |
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180 _adapter_opt_fold_double, // process N arguments, prepend a double |
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181 _adapter_opt_fold_void, // process N arguments, but leave the list unchanged |
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182 _adapter_opt_fold_1_ref, // process N=1 argument, prepend a reference |
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183 _adapter_opt_fold_2_ref, // process N=2 arguments, prepend a reference |
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184 _adapter_opt_fold_3_ref, // process N=3 arguments, prepend a reference |
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185 _adapter_opt_fold_4_ref, // process N=4 arguments, prepend a reference |
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186 _adapter_opt_fold_5_ref, // process N=5 arguments, prepend a reference |
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187 _adapter_opt_fold_FIRST = _adapter_opt_fold_ref, |
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188 _adapter_opt_fold_LAST = _adapter_opt_fold_5_ref, |
710 | 189 |
190 _EK_LIMIT, | |
191 _EK_FIRST = 0 | |
192 }; | |
193 | |
194 public: | |
195 static bool enabled() { return _enabled; } | |
196 static void set_enabled(bool z); | |
197 | |
198 private: | |
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199 enum { // import java_lang_invoke_AdapterMethodHandle::CONV_OP_* |
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200 CONV_OP_LIMIT = java_lang_invoke_AdapterMethodHandle::CONV_OP_LIMIT, |
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201 CONV_OP_MASK = java_lang_invoke_AdapterMethodHandle::CONV_OP_MASK, |
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202 CONV_TYPE_MASK = java_lang_invoke_AdapterMethodHandle::CONV_TYPE_MASK, |
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203 CONV_VMINFO_MASK = java_lang_invoke_AdapterMethodHandle::CONV_VMINFO_MASK, |
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204 CONV_VMINFO_SHIFT = java_lang_invoke_AdapterMethodHandle::CONV_VMINFO_SHIFT, |
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205 CONV_OP_SHIFT = java_lang_invoke_AdapterMethodHandle::CONV_OP_SHIFT, |
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206 CONV_DEST_TYPE_SHIFT = java_lang_invoke_AdapterMethodHandle::CONV_DEST_TYPE_SHIFT, |
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207 CONV_SRC_TYPE_SHIFT = java_lang_invoke_AdapterMethodHandle::CONV_SRC_TYPE_SHIFT, |
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208 CONV_STACK_MOVE_SHIFT = java_lang_invoke_AdapterMethodHandle::CONV_STACK_MOVE_SHIFT, |
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209 CONV_STACK_MOVE_MASK = java_lang_invoke_AdapterMethodHandle::CONV_STACK_MOVE_MASK |
710 | 210 }; |
211 | |
212 static bool _enabled; | |
213 static MethodHandleEntry* _entries[_EK_LIMIT]; | |
214 static const char* _entry_names[_EK_LIMIT+1]; | |
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215 static jobject _raise_exception_method; |
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216 static address _adapter_return_handlers[CONV_TYPE_MASK+1]; |
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217 |
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218 // Adapters. |
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219 static MethodHandlesAdapterBlob* _adapter_code; |
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220 |
710 | 221 static bool ek_valid(EntryKind ek) { return (uint)ek < (uint)_EK_LIMIT; } |
222 static bool conv_op_valid(int op) { return (uint)op < (uint)CONV_OP_LIMIT; } | |
223 | |
224 public: | |
225 static bool have_entry(EntryKind ek) { return ek_valid(ek) && _entries[ek] != NULL; } | |
226 static MethodHandleEntry* entry(EntryKind ek) { assert(ek_valid(ek), "initialized"); | |
227 return _entries[ek]; } | |
228 static const char* entry_name(EntryKind ek) { assert(ek_valid(ek), "oob"); | |
229 return _entry_names[ek]; } | |
230 static EntryKind adapter_entry_kind(int op) { assert(conv_op_valid(op), "oob"); | |
231 return EntryKind(_adapter_mh_first + op); } | |
232 | |
233 static void init_entry(EntryKind ek, MethodHandleEntry* me) { | |
234 assert(ek_valid(ek), "oob"); | |
235 assert(_entries[ek] == NULL, "no double initialization"); | |
236 _entries[ek] = me; | |
237 } | |
238 | |
1304 | 239 // Some adapter helper functions. |
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240 static EntryKind ek_original_kind(EntryKind ek) { |
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241 if (ek <= _adapter_mh_last) return ek; |
1304 | 242 switch (ek) { |
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243 case _adapter_opt_swap_1: |
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244 case _adapter_opt_swap_2: |
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245 return _adapter_swap_args; |
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246 case _adapter_opt_rot_1_up: |
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247 case _adapter_opt_rot_1_down: |
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248 case _adapter_opt_rot_2_up: |
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249 case _adapter_opt_rot_2_down: |
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250 return _adapter_rot_args; |
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251 case _adapter_opt_i2i: |
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252 case _adapter_opt_l2i: |
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253 case _adapter_opt_d2f: |
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254 case _adapter_opt_i2l: |
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255 case _adapter_opt_f2d: |
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256 return _adapter_prim_to_prim; |
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257 case _adapter_opt_unboxi: |
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258 case _adapter_opt_unboxl: |
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259 return _adapter_ref_to_prim; |
1304 | 260 } |
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261 if (ek >= _adapter_opt_spread_FIRST && ek <= _adapter_opt_spread_LAST) |
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262 return _adapter_spread_args; |
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263 if (ek >= _adapter_opt_collect_FIRST && ek <= _adapter_opt_collect_LAST) |
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264 return _adapter_collect_args; |
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265 if (ek >= _adapter_opt_fold_FIRST && ek <= _adapter_opt_fold_LAST) |
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266 return _adapter_fold_args; |
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267 if (ek >= _adapter_opt_return_FIRST && ek <= _adapter_opt_return_LAST) |
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268 return _adapter_opt_return_any; |
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269 assert(false, "oob"); |
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270 return _EK_LIMIT; |
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271 } |
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272 |
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273 static bool ek_supported(MethodHandles::EntryKind ek); |
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274 |
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275 static BasicType ek_bound_mh_arg_type(EntryKind ek) { |
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276 switch (ek) { |
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277 case _bound_int_mh : // fall-thru |
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278 case _bound_int_direct_mh : return T_INT; |
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279 case _bound_long_mh : // fall-thru |
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280 case _bound_long_direct_mh : return T_LONG; |
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281 default : return T_OBJECT; |
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282 } |
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283 } |
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284 |
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285 static int ek_adapter_opt_swap_slots(EntryKind ek) { |
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286 switch (ek) { |
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287 case _adapter_opt_swap_1 : return 1; |
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288 case _adapter_opt_swap_2 : return 2; |
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289 case _adapter_opt_rot_1_up : return 1; |
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290 case _adapter_opt_rot_1_down : return 1; |
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291 case _adapter_opt_rot_2_up : return 2; |
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292 case _adapter_opt_rot_2_down : return 2; |
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293 default : ShouldNotReachHere(); return -1; |
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294 } |
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295 } |
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296 |
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297 static int ek_adapter_opt_swap_mode(EntryKind ek) { |
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298 switch (ek) { |
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299 case _adapter_opt_swap_1 : return 0; |
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300 case _adapter_opt_swap_2 : return 0; |
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301 case _adapter_opt_rot_1_up : return 1; |
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302 case _adapter_opt_rot_1_down : return -1; |
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303 case _adapter_opt_rot_2_up : return 1; |
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304 case _adapter_opt_rot_2_down : return -1; |
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305 default : ShouldNotReachHere(); return 0; |
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306 } |
1304 | 307 } |
308 | |
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309 static int ek_adapter_opt_collect_count(EntryKind ek) { |
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310 assert(ek >= _adapter_opt_collect_FIRST && ek <= _adapter_opt_collect_LAST || |
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311 ek >= _adapter_opt_fold_FIRST && ek <= _adapter_opt_fold_LAST, ""); |
1304 | 312 switch (ek) { |
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313 case _adapter_opt_collect_0_ref : return 0; |
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314 case _adapter_opt_filter_S0_ref : |
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315 case _adapter_opt_filter_S1_ref : |
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316 case _adapter_opt_filter_S2_ref : |
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317 case _adapter_opt_filter_S3_ref : |
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318 case _adapter_opt_filter_S4_ref : |
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319 case _adapter_opt_filter_S5_ref : |
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320 case _adapter_opt_fold_1_ref : |
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321 case _adapter_opt_collect_1_ref : return 1; |
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322 case _adapter_opt_collect_2_S0_ref : |
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323 case _adapter_opt_collect_2_S1_ref : |
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324 case _adapter_opt_collect_2_S2_ref : |
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325 case _adapter_opt_collect_2_S3_ref : |
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326 case _adapter_opt_collect_2_S4_ref : |
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327 case _adapter_opt_collect_2_S5_ref : |
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328 case _adapter_opt_fold_2_ref : |
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329 case _adapter_opt_collect_2_ref : return 2; |
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330 case _adapter_opt_fold_3_ref : |
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331 case _adapter_opt_collect_3_ref : return 3; |
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332 case _adapter_opt_fold_4_ref : |
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333 case _adapter_opt_collect_4_ref : return 4; |
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334 case _adapter_opt_fold_5_ref : |
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335 case _adapter_opt_collect_5_ref : return 5; |
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336 default : return -1; // sentinel value for "variable" |
1304 | 337 } |
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338 } |
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339 |
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340 static int ek_adapter_opt_collect_slot(EntryKind ek) { |
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341 assert(ek >= _adapter_opt_collect_FIRST && ek <= _adapter_opt_collect_LAST || |
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342 ek >= _adapter_opt_fold_FIRST && ek <= _adapter_opt_fold_LAST, ""); |
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343 switch (ek) { |
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344 case _adapter_opt_collect_2_S0_ref : |
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345 case _adapter_opt_filter_S0_ref : return 0; |
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346 case _adapter_opt_collect_2_S1_ref : |
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347 case _adapter_opt_filter_S1_ref : return 1; |
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348 case _adapter_opt_collect_2_S2_ref : |
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349 case _adapter_opt_filter_S2_ref : return 2; |
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350 case _adapter_opt_collect_2_S3_ref : |
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351 case _adapter_opt_filter_S3_ref : return 3; |
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352 case _adapter_opt_collect_2_S4_ref : |
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353 case _adapter_opt_filter_S4_ref : return 4; |
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354 case _adapter_opt_collect_2_S5_ref : |
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355 case _adapter_opt_filter_S5_ref : return 5; |
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356 default : return -1; // sentinel value for "variable" |
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357 } |
1304 | 358 } |
359 | |
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360 static BasicType ek_adapter_opt_collect_type(EntryKind ek) { |
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361 assert(ek >= _adapter_opt_collect_FIRST && ek <= _adapter_opt_collect_LAST || |
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362 ek >= _adapter_opt_fold_FIRST && ek <= _adapter_opt_fold_LAST, ""); |
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363 switch (ek) { |
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364 case _adapter_opt_fold_int : |
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365 case _adapter_opt_collect_int : return T_INT; |
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366 case _adapter_opt_fold_long : |
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367 case _adapter_opt_collect_long : return T_LONG; |
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368 case _adapter_opt_fold_float : |
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369 case _adapter_opt_collect_float : return T_FLOAT; |
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370 case _adapter_opt_fold_double : |
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371 case _adapter_opt_collect_double : return T_DOUBLE; |
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372 case _adapter_opt_fold_void : |
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373 case _adapter_opt_collect_void : return T_VOID; |
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374 default : return T_OBJECT; |
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375 } |
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376 } |
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377 |
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378 static int ek_adapter_opt_return_slot(EntryKind ek) { |
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379 assert(ek >= _adapter_opt_return_FIRST && ek <= _adapter_opt_return_LAST, ""); |
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380 switch (ek) { |
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381 case _adapter_opt_return_S0_ref : return 0; |
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382 case _adapter_opt_return_S1_ref : return 1; |
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383 case _adapter_opt_return_S2_ref : return 2; |
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384 case _adapter_opt_return_S3_ref : return 3; |
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385 case _adapter_opt_return_S4_ref : return 4; |
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386 case _adapter_opt_return_S5_ref : return 5; |
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387 default : return -1; // sentinel value for "variable" |
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388 } |
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389 } |
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390 |
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391 static BasicType ek_adapter_opt_return_type(EntryKind ek) { |
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392 assert(ek >= _adapter_opt_return_FIRST && ek <= _adapter_opt_return_LAST, ""); |
1304 | 393 switch (ek) { |
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394 case _adapter_opt_return_int : return T_INT; |
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395 case _adapter_opt_return_long : return T_LONG; |
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396 case _adapter_opt_return_float : return T_FLOAT; |
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397 case _adapter_opt_return_double : return T_DOUBLE; |
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398 case _adapter_opt_return_void : return T_VOID; |
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399 case _adapter_opt_return_any : return T_CONFLICT; // sentinel value for "variable" |
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400 default : return T_OBJECT; |
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401 } |
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402 } |
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403 |
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404 static int ek_adapter_opt_spread_count(EntryKind ek) { |
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405 assert(ek >= _adapter_opt_spread_FIRST && ek <= _adapter_opt_spread_LAST, ""); |
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406 switch (ek) { |
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407 case _adapter_opt_spread_0 : return 0; |
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408 case _adapter_opt_spread_1_ref : return 1; |
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409 case _adapter_opt_spread_2_ref : return 2; |
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410 case _adapter_opt_spread_3_ref : return 3; |
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411 case _adapter_opt_spread_4_ref : return 4; |
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412 case _adapter_opt_spread_5_ref : return 5; |
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413 default : return -1; // sentinel value for "variable" |
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414 } |
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415 } |
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416 |
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417 static BasicType ek_adapter_opt_spread_type(EntryKind ek) { |
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418 assert(ek >= _adapter_opt_spread_FIRST && ek <= _adapter_opt_spread_LAST, ""); |
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419 switch (ek) { |
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420 // (there is no _adapter_opt_spread_boolean; we use byte) |
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421 case _adapter_opt_spread_byte : return T_BYTE; |
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422 case _adapter_opt_spread_char : return T_CHAR; |
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423 case _adapter_opt_spread_short : return T_SHORT; |
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424 case _adapter_opt_spread_int : return T_INT; |
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425 case _adapter_opt_spread_long : return T_LONG; |
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426 case _adapter_opt_spread_float : return T_FLOAT; |
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427 case _adapter_opt_spread_double : return T_DOUBLE; |
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428 default : return T_OBJECT; |
1304 | 429 } |
430 } | |
431 | |
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432 static methodOop raise_exception_method() { |
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433 oop rem = JNIHandles::resolve(_raise_exception_method); |
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434 assert(rem == NULL || rem->is_method(), ""); |
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435 return (methodOop) rem; |
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436 } |
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437 static void set_raise_exception_method(methodOop rem) { |
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438 assert(_raise_exception_method == NULL, ""); |
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439 _raise_exception_method = JNIHandles::make_global(Handle(rem)); |
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440 } |
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441 static methodOop resolve_raise_exception_method(TRAPS); |
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442 // call raise_exception_method from C code: |
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443 static void raise_exception(int code, oop actual, oop required, TRAPS); |
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444 |
710 | 445 static jint adapter_conversion(int conv_op, BasicType src, BasicType dest, |
446 int stack_move = 0, int vminfo = 0) { | |
447 assert(conv_op_valid(conv_op), "oob"); | |
448 jint conv = ((conv_op << CONV_OP_SHIFT) | |
449 | (src << CONV_SRC_TYPE_SHIFT) | |
450 | (dest << CONV_DEST_TYPE_SHIFT) | |
451 | (stack_move << CONV_STACK_MOVE_SHIFT) | |
452 | (vminfo << CONV_VMINFO_SHIFT) | |
453 ); | |
454 assert(adapter_conversion_op(conv) == conv_op, "decode conv_op"); | |
455 assert(adapter_conversion_src_type(conv) == src, "decode src"); | |
456 assert(adapter_conversion_dest_type(conv) == dest, "decode dest"); | |
457 assert(adapter_conversion_stack_move(conv) == stack_move, "decode stack_move"); | |
458 assert(adapter_conversion_vminfo(conv) == vminfo, "decode vminfo"); | |
459 return conv; | |
460 } | |
461 static int adapter_conversion_op(jint conv) { | |
462 return ((conv >> CONV_OP_SHIFT) & 0xF); | |
463 } | |
464 static BasicType adapter_conversion_src_type(jint conv) { | |
465 return (BasicType)((conv >> CONV_SRC_TYPE_SHIFT) & 0xF); | |
466 } | |
467 static BasicType adapter_conversion_dest_type(jint conv) { | |
468 return (BasicType)((conv >> CONV_DEST_TYPE_SHIFT) & 0xF); | |
469 } | |
470 static int adapter_conversion_stack_move(jint conv) { | |
471 return (conv >> CONV_STACK_MOVE_SHIFT); | |
472 } | |
473 static int adapter_conversion_vminfo(jint conv) { | |
474 return (conv >> CONV_VMINFO_SHIFT) & CONV_VMINFO_MASK; | |
475 } | |
476 | |
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477 // Bit mask of conversion_op values. May vary by platform. |
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478 static int adapter_conversion_ops_supported_mask(); |
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479 |
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480 static bool conv_op_supported(int conv_op) { |
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481 assert(conv_op_valid(conv_op), ""); |
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482 return ((adapter_conversion_ops_supported_mask() & nth_bit(conv_op)) != 0); |
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483 } |
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484 |
710 | 485 // Offset in words that the interpreter stack pointer moves when an argument is pushed. |
486 // The stack_move value must always be a multiple of this. | |
487 static int stack_move_unit() { | |
1506 | 488 return frame::interpreter_frame_expression_stack_direction() * Interpreter::stackElementWords; |
710 | 489 } |
490 | |
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491 // Adapter frame traversal. (Implementation-specific.) |
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492 static frame ricochet_frame_sender(const frame& fr, RegisterMap* reg_map); |
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493 static void ricochet_frame_oops_do(const frame& fr, OopClosure* blk, const RegisterMap* reg_map); |
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494 |
710 | 495 enum { CONV_VMINFO_SIGN_FLAG = 0x80 }; |
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496 // Shift values for prim-to-prim conversions. |
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497 static int adapter_prim_to_prim_subword_vminfo(BasicType dest) { |
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498 if (dest == T_BOOLEAN) return (BitsPerInt - 1); // boolean is 1 bit |
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499 if (dest == T_CHAR) return (BitsPerInt - BitsPerShort); |
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500 if (dest == T_BYTE) return (BitsPerInt - BitsPerByte ) | CONV_VMINFO_SIGN_FLAG; |
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501 if (dest == T_SHORT) return (BitsPerInt - BitsPerShort) | CONV_VMINFO_SIGN_FLAG; |
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502 return 0; // case T_INT |
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503 } |
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504 // Shift values for unboxing a primitive. |
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505 static int adapter_unbox_subword_vminfo(BasicType dest) { |
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506 if (dest == T_BOOLEAN) return (BitsPerInt - BitsPerByte ); // implemented as 1 byte |
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507 if (dest == T_CHAR) return (BitsPerInt - BitsPerShort); |
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508 if (dest == T_BYTE) return (BitsPerInt - BitsPerByte ) | CONV_VMINFO_SIGN_FLAG; |
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509 if (dest == T_SHORT) return (BitsPerInt - BitsPerShort) | CONV_VMINFO_SIGN_FLAG; |
710 | 510 return 0; // case T_INT |
511 } | |
512 // Here is the transformation the i2i adapter must perform: | |
513 static int truncate_subword_from_vminfo(jint value, int vminfo) { | |
514 jint tem = value << vminfo; | |
515 if ((vminfo & CONV_VMINFO_SIGN_FLAG) != 0) { | |
516 return (jint)tem >> vminfo; | |
517 } else { | |
518 return (juint)tem >> vminfo; | |
519 } | |
520 } | |
521 | |
522 static inline address from_compiled_entry(EntryKind ek); | |
523 static inline address from_interpreted_entry(EntryKind ek); | |
524 | |
525 // helpers for decode_method. | |
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526 static methodOop decode_methodOop(methodOop m, int& decode_flags_result); |
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527 static methodHandle decode_vmtarget(oop vmtarget, int vmindex, oop mtype, KlassHandle& receiver_limit_result, int& decode_flags_result); |
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528 static methodHandle decode_MemberName(oop mname, KlassHandle& receiver_limit_result, int& decode_flags_result); |
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529 static methodHandle decode_MethodHandle(oop mh, KlassHandle& receiver_limit_result, int& decode_flags_result); |
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530 static methodHandle decode_DirectMethodHandle(oop mh, KlassHandle& receiver_limit_result, int& decode_flags_result); |
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531 static methodHandle decode_BoundMethodHandle(oop mh, KlassHandle& receiver_limit_result, int& decode_flags_result); |
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532 static methodHandle decode_AdapterMethodHandle(oop mh, KlassHandle& receiver_limit_result, int& decode_flags_result); |
710 | 533 |
534 // Find out how many stack slots an mh pushes or pops. | |
535 // The result is *not* reported as a multiple of stack_move_unit(); | |
536 // It is a signed net number of pushes (a difference in vmslots). | |
537 // To compare with a stack_move value, first multiply by stack_move_unit(). | |
538 static int decode_MethodHandle_stack_pushes(oop mh); | |
539 | |
540 public: | |
541 // working with member names | |
542 static void resolve_MemberName(Handle mname, TRAPS); // compute vmtarget/vmindex from name/type | |
543 static void expand_MemberName(Handle mname, int suppress, TRAPS); // expand defc/name/type if missing | |
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544 static Handle new_MemberName(TRAPS); // must be followed by init_MemberName |
710 | 545 static void init_MemberName(oop mname_oop, oop target); // compute vmtarget/vmindex from target |
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546 static void init_MemberName(oop mname_oop, methodOop m, bool do_dispatch = true); |
710 | 547 static void init_MemberName(oop mname_oop, klassOop field_holder, AccessFlags mods, int offset); |
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548 static int find_MemberNames(klassOop k, Symbol* name, Symbol* sig, |
710 | 549 int mflags, klassOop caller, |
550 int skip, objArrayOop results); | |
551 // bit values for suppress argument to expand_MemberName: | |
552 enum { _suppress_defc = 1, _suppress_name = 2, _suppress_type = 4 }; | |
553 | |
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554 // Generate MethodHandles adapters. |
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555 static void generate_adapters(); |
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556 |
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557 // Called from InterpreterGenerator and MethodHandlesAdapterGenerator. |
710 | 558 static address generate_method_handle_interpreter_entry(MacroAssembler* _masm); |
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559 static void generate_method_handle_stub(MacroAssembler* _masm, EntryKind ek); |
710 | 560 |
561 // argument list parsing | |
562 static int argument_slot(oop method_type, int arg); | |
563 static int argument_slot_count(oop method_type) { return argument_slot(method_type, -1); } | |
564 static int argument_slot_to_argnum(oop method_type, int argslot); | |
565 | |
566 // Runtime support | |
567 enum { // bit-encoded flags from decode_method or decode_vmref | |
568 _dmf_has_receiver = 0x01, // target method has leading reference argument | |
569 _dmf_does_dispatch = 0x02, // method handle performs virtual or interface dispatch | |
570 _dmf_from_interface = 0x04, // peforms interface dispatch | |
571 _DMF_DIRECT_MASK = (_dmf_from_interface*2 - _dmf_has_receiver), | |
572 _dmf_binds_method = 0x08, | |
573 _dmf_binds_argument = 0x10, | |
574 _DMF_BOUND_MASK = (_dmf_binds_argument*2 - _dmf_binds_method), | |
575 _dmf_adapter_lsb = 0x20, | |
576 _DMF_ADAPTER_MASK = (_dmf_adapter_lsb << CONV_OP_LIMIT) - _dmf_adapter_lsb | |
577 }; | |
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578 static methodHandle decode_method(oop x, KlassHandle& receiver_limit_result, int& decode_flags_result); |
710 | 579 enum { |
580 // format of query to getConstant: | |
581 GC_JVM_PUSH_LIMIT = 0, | |
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582 GC_JVM_STACK_MOVE_UNIT = 1, |
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583 GC_CONV_OP_IMPLEMENTED_MASK = 2, |
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584 GC_OP_ROT_ARGS_DOWN_LIMIT_BIAS = 3, |
710 | 585 |
586 // format of result from getTarget / encode_target: | |
587 ETF_HANDLE_OR_METHOD_NAME = 0, // all available data (immediate MH or method) | |
588 ETF_DIRECT_HANDLE = 1, // ultimate method handle (will be a DMH, may be self) | |
589 ETF_METHOD_NAME = 2, // ultimate method as MemberName | |
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590 ETF_REFLECT_METHOD = 3, // ultimate method as java.lang.reflect object (sans refClass) |
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591 ETF_FORCE_DIRECT_HANDLE = 64, |
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592 ETF_COMPILE_DIRECT_HANDLE = 65, |
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593 |
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594 // ad hoc constants |
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595 OP_ROT_ARGS_DOWN_LIMIT_BIAS = -1 |
710 | 596 }; |
597 static int get_named_constant(int which, Handle name_box, TRAPS); | |
598 static oop encode_target(Handle mh, int format, TRAPS); // report vmtarget (to Java code) | |
599 static bool class_cast_needed(klassOop src, klassOop dst); | |
600 | |
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601 static instanceKlassHandle resolve_instance_klass(oop java_mirror_oop, TRAPS); |
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602 static instanceKlassHandle resolve_instance_klass(jclass java_mirror_jh, TRAPS) { |
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603 return resolve_instance_klass(JNIHandles::resolve(java_mirror_jh), THREAD); |
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604 } |
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605 |
710 | 606 private: |
607 // These checkers operate on a pair of whole MethodTypes: | |
608 static const char* check_method_type_change(oop src_mtype, int src_beg, int src_end, | |
609 int insert_argnum, oop insert_type, | |
610 int change_argnum, oop change_type, | |
611 int delete_argnum, | |
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612 oop dst_mtype, int dst_beg, int dst_end, |
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613 bool raw = false); |
710 | 614 static const char* check_method_type_insertion(oop src_mtype, |
615 int insert_argnum, oop insert_type, | |
616 oop dst_mtype) { | |
617 oop no_ref = NULL; | |
618 return check_method_type_change(src_mtype, 0, -1, | |
619 insert_argnum, insert_type, | |
620 -1, no_ref, -1, dst_mtype, 0, -1); | |
621 } | |
622 static const char* check_method_type_conversion(oop src_mtype, | |
623 int change_argnum, oop change_type, | |
624 oop dst_mtype) { | |
625 oop no_ref = NULL; | |
626 return check_method_type_change(src_mtype, 0, -1, -1, no_ref, | |
627 change_argnum, change_type, | |
628 -1, dst_mtype, 0, -1); | |
629 } | |
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630 static const char* check_method_type_passthrough(oop src_mtype, oop dst_mtype, bool raw) { |
710 | 631 oop no_ref = NULL; |
632 return check_method_type_change(src_mtype, 0, -1, | |
633 -1, no_ref, -1, no_ref, -1, | |
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634 dst_mtype, 0, -1, raw); |
710 | 635 } |
636 | |
637 // These checkers operate on pairs of argument or return types: | |
638 static const char* check_argument_type_change(BasicType src_type, klassOop src_klass, | |
639 BasicType dst_type, klassOop dst_klass, | |
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640 int argnum, bool raw = false); |
710 | 641 |
642 static const char* check_argument_type_change(oop src_type, oop dst_type, | |
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643 int argnum, bool raw = false) { |
710 | 644 klassOop src_klass = NULL, dst_klass = NULL; |
645 BasicType src_bt = java_lang_Class::as_BasicType(src_type, &src_klass); | |
646 BasicType dst_bt = java_lang_Class::as_BasicType(dst_type, &dst_klass); | |
647 return check_argument_type_change(src_bt, src_klass, | |
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648 dst_bt, dst_klass, argnum, raw); |
710 | 649 } |
650 | |
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651 static const char* check_return_type_change(oop src_type, oop dst_type, bool raw = false) { |
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652 return check_argument_type_change(src_type, dst_type, -1, raw); |
710 | 653 } |
654 | |
655 static const char* check_return_type_change(BasicType src_type, klassOop src_klass, | |
656 BasicType dst_type, klassOop dst_klass) { | |
657 return check_argument_type_change(src_type, src_klass, dst_type, dst_klass, -1); | |
658 } | |
659 | |
660 static const char* check_method_receiver(methodOop m, klassOop passed_recv_type); | |
661 | |
662 // These verifiers can block, and will throw an error if the checking fails: | |
663 static void verify_vmslots(Handle mh, TRAPS); | |
664 static void verify_vmargslot(Handle mh, int argnum, int argslot, TRAPS); | |
665 | |
666 static void verify_method_type(methodHandle m, Handle mtype, | |
667 bool has_bound_oop, | |
668 KlassHandle bound_oop_type, | |
669 TRAPS); | |
670 | |
671 static void verify_method_signature(methodHandle m, Handle mtype, | |
672 int first_ptype_pos, | |
673 KlassHandle insert_ptype, TRAPS); | |
674 | |
675 static void verify_DirectMethodHandle(Handle mh, methodHandle m, TRAPS); | |
676 static void verify_BoundMethodHandle(Handle mh, Handle target, int argnum, | |
677 bool direct_to_method, TRAPS); | |
678 static void verify_BoundMethodHandle_with_receiver(Handle mh, methodHandle m, TRAPS); | |
679 static void verify_AdapterMethodHandle(Handle mh, int argnum, TRAPS); | |
680 | |
681 public: | |
682 | |
683 // Fill in the fields of a DirectMethodHandle mh. (MH.type must be pre-filled.) | |
684 static void init_DirectMethodHandle(Handle mh, methodHandle method, bool do_dispatch, TRAPS); | |
685 | |
686 // Fill in the fields of a BoundMethodHandle mh. (MH.type, BMH.argument must be pre-filled.) | |
687 static void init_BoundMethodHandle(Handle mh, Handle target, int argnum, TRAPS); | |
688 static void init_BoundMethodHandle_with_receiver(Handle mh, | |
689 methodHandle original_m, | |
690 KlassHandle receiver_limit, | |
691 int decode_flags, | |
692 TRAPS); | |
693 | |
694 // Fill in the fields of an AdapterMethodHandle mh. (MH.type must be pre-filled.) | |
695 static void init_AdapterMethodHandle(Handle mh, Handle target, int argnum, TRAPS); | |
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696 static void ensure_vmlayout_field(Handle target, TRAPS); |
710 | 697 |
698 #ifdef ASSERT | |
699 static bool spot_check_entry_names(); | |
700 #endif | |
701 | |
702 private: | |
703 static methodHandle dispatch_decoded_method(methodHandle m, | |
704 KlassHandle receiver_limit, | |
705 int decode_flags, | |
706 KlassHandle receiver_klass, | |
707 TRAPS); | |
708 | |
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709 public: |
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710 static bool is_float_fixed_reinterpretation_cast(BasicType src, BasicType dst); |
710 | 711 static bool same_basic_type_for_arguments(BasicType src, BasicType dst, |
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712 bool raw = false, |
710 | 713 bool for_return = false); |
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714 static bool same_basic_type_for_returns(BasicType src, BasicType dst, bool raw = false) { |
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715 return same_basic_type_for_arguments(src, dst, raw, true); |
710 | 716 } |
717 | |
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718 static Symbol* convert_to_signature(oop type_str, bool polymorphic, TRAPS); |
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719 |
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720 #ifdef TARGET_ARCH_x86 |
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721 # include "methodHandles_x86.hpp" |
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722 #endif |
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723 #ifdef TARGET_ARCH_sparc |
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724 # include "methodHandles_sparc.hpp" |
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725 #endif |
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726 #ifdef TARGET_ARCH_zero |
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727 # include "methodHandles_zero.hpp" |
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728 #endif |
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729 #ifdef TARGET_ARCH_arm |
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730 # include "methodHandles_arm.hpp" |
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731 #endif |
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732 #ifdef TARGET_ARCH_ppc |
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733 # include "methodHandles_ppc.hpp" |
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734 #endif |
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735 |
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736 #ifdef TARGET_ARCH_NYI_6939861 |
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737 // Here are some backward compatible declarations until the 6939861 ports are updated. |
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738 #define _adapter_flyby (_EK_LIMIT + 10) |
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739 #define _adapter_ricochet (_EK_LIMIT + 11) |
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740 #define _adapter_opt_spread_1 _adapter_opt_spread_1_ref |
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741 #define _adapter_opt_spread_more _adapter_opt_spread_ref |
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742 enum { |
710 | 743 _INSERT_NO_MASK = -1, |
744 _INSERT_REF_MASK = 0, | |
745 _INSERT_INT_MASK = 1, | |
746 _INSERT_LONG_MASK = 3 | |
747 }; | |
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748 static void get_ek_bound_mh_info(EntryKind ek, BasicType& arg_type, int& arg_mask, int& arg_slots) { |
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749 arg_type = ek_bound_mh_arg_type(ek); |
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750 arg_mask = 0; |
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751 arg_slots = type2size[arg_type];; |
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752 } |
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753 static void get_ek_adapter_opt_swap_rot_info(EntryKind ek, int& swap_bytes, int& rotate) { |
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754 int swap_slots = ek_adapter_opt_swap_slots(ek); |
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755 rotate = ek_adapter_opt_swap_mode(ek); |
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756 swap_bytes = swap_slots * Interpreter::stackElementSize; |
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757 } |
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758 static int get_ek_adapter_opt_spread_info(EntryKind ek) { |
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759 return ek_adapter_opt_spread_count(ek); |
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760 } |
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761 |
710 | 762 static void insert_arg_slots(MacroAssembler* _masm, |
763 RegisterOrConstant arg_slots, | |
764 int arg_mask, | |
1304 | 765 Register argslot_reg, |
1503 | 766 Register temp_reg, Register temp2_reg, Register temp3_reg = noreg); |
710 | 767 |
768 static void remove_arg_slots(MacroAssembler* _masm, | |
769 RegisterOrConstant arg_slots, | |
1304 | 770 Register argslot_reg, |
1503 | 771 Register temp_reg, Register temp2_reg, Register temp3_reg = noreg); |
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772 |
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773 static void trace_method_handle(MacroAssembler* _masm, const char* adaptername) PRODUCT_RETURN; |
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774 #endif //TARGET_ARCH_NYI_6939861 |
710 | 775 }; |
776 | |
777 | |
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778 // Access methods for the "entry" field of a java.lang.invoke.MethodHandle. |
710 | 779 // The field is primarily a jump target for compiled calls. |
780 // However, we squirrel away some nice pointers for other uses, | |
781 // just before the jump target. | |
782 // Aspects of a method handle entry: | |
783 // - from_compiled_entry - stub used when compiled code calls the MH | |
784 // - from_interpreted_entry - stub used when the interpreter calls the MH | |
785 // - type_checking_entry - stub for runtime casting between MHForm siblings (NYI) | |
786 class MethodHandleEntry { | |
787 public: | |
788 class Data { | |
789 friend class MethodHandleEntry; | |
790 size_t _total_size; // size including Data and code stub | |
791 MethodHandleEntry* _type_checking_entry; | |
792 address _from_interpreted_entry; | |
793 MethodHandleEntry* method_entry() { return (MethodHandleEntry*)(this + 1); } | |
794 }; | |
795 | |
796 Data* data() { return (Data*)this - 1; } | |
797 | |
798 address start_address() { return (address) data(); } | |
799 address end_address() { return start_address() + data()->_total_size; } | |
800 | |
801 address from_compiled_entry() { return (address) this; } | |
802 | |
803 address from_interpreted_entry() { return data()->_from_interpreted_entry; } | |
804 void set_from_interpreted_entry(address e) { data()->_from_interpreted_entry = e; } | |
805 | |
806 MethodHandleEntry* type_checking_entry() { return data()->_type_checking_entry; } | |
807 void set_type_checking_entry(MethodHandleEntry* e) { data()->_type_checking_entry = e; } | |
808 | |
809 void set_end_address(address end_addr) { | |
810 size_t total_size = end_addr - start_address(); | |
811 assert(total_size > 0 && total_size < 0x1000, "reasonable end address"); | |
812 data()->_total_size = total_size; | |
813 } | |
814 | |
815 // Compiler support: | |
816 static int from_interpreted_entry_offset_in_bytes() { | |
817 return (int)( offset_of(Data, _from_interpreted_entry) - sizeof(Data) ); | |
818 } | |
819 static int type_checking_entry_offset_in_bytes() { | |
820 return (int)( offset_of(Data, _from_interpreted_entry) - sizeof(Data) ); | |
821 } | |
822 | |
823 static address start_compiled_entry(MacroAssembler* _masm, | |
824 address interpreted_entry = NULL); | |
825 static MethodHandleEntry* finish_compiled_entry(MacroAssembler* masm, address start_addr); | |
826 }; | |
827 | |
828 address MethodHandles::from_compiled_entry(EntryKind ek) { return entry(ek)->from_compiled_entry(); } | |
829 address MethodHandles::from_interpreted_entry(EntryKind ek) { return entry(ek)->from_interpreted_entry(); } | |
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830 |
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831 |
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832 //------------------------------------------------------------------------------ |
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833 // MethodHandlesAdapterGenerator |
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834 // |
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835 class MethodHandlesAdapterGenerator : public StubCodeGenerator { |
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836 public: |
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837 MethodHandlesAdapterGenerator(CodeBuffer* code) : StubCodeGenerator(code, PrintMethodHandleStubs) {} |
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838 |
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839 void generate(); |
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840 }; |
1972 | 841 |
842 #endif // SHARE_VM_PRIMS_METHODHANDLES_HPP |