Mercurial > hg > truffle
annotate src/share/vm/prims/methodHandles.hpp @ 4807:15d394228cfa
7111138: delete the obsolete flag -XX:+UseRicochetFrames
Reviewed-by: dholmes, bdelsart, kvn, twisti
| author | jrose |
|---|---|
| date | Thu, 19 Jan 2012 13:00:11 -0800 |
| parents | 393f4b789fd0 |
| children | 1d7922586cf6 |
| rev | line source |
|---|---|
| 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 |
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190 _adapter_opt_profiling, |
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191 |
| 710 | 192 _EK_LIMIT, |
| 193 _EK_FIRST = 0 | |
| 194 }; | |
| 195 | |
| 196 public: | |
| 197 static bool enabled() { return _enabled; } | |
| 198 static void set_enabled(bool z); | |
| 199 | |
| 200 private: | |
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201 enum { // import java_lang_invoke_AdapterMethodHandle::CONV_OP_* |
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202 CONV_OP_LIMIT = java_lang_invoke_AdapterMethodHandle::CONV_OP_LIMIT, |
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203 CONV_OP_MASK = java_lang_invoke_AdapterMethodHandle::CONV_OP_MASK, |
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204 CONV_TYPE_MASK = java_lang_invoke_AdapterMethodHandle::CONV_TYPE_MASK, |
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205 CONV_VMINFO_MASK = java_lang_invoke_AdapterMethodHandle::CONV_VMINFO_MASK, |
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206 CONV_VMINFO_SHIFT = java_lang_invoke_AdapterMethodHandle::CONV_VMINFO_SHIFT, |
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207 CONV_OP_SHIFT = java_lang_invoke_AdapterMethodHandle::CONV_OP_SHIFT, |
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208 CONV_DEST_TYPE_SHIFT = java_lang_invoke_AdapterMethodHandle::CONV_DEST_TYPE_SHIFT, |
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209 CONV_SRC_TYPE_SHIFT = java_lang_invoke_AdapterMethodHandle::CONV_SRC_TYPE_SHIFT, |
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210 CONV_STACK_MOVE_SHIFT = java_lang_invoke_AdapterMethodHandle::CONV_STACK_MOVE_SHIFT, |
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211 CONV_STACK_MOVE_MASK = java_lang_invoke_AdapterMethodHandle::CONV_STACK_MOVE_MASK |
| 710 | 212 }; |
| 213 | |
| 214 static bool _enabled; | |
| 215 static MethodHandleEntry* _entries[_EK_LIMIT]; | |
| 216 static const char* _entry_names[_EK_LIMIT+1]; | |
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217 static jobject _raise_exception_method; |
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218 static address _adapter_return_handlers[CONV_TYPE_MASK+1]; |
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219 |
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220 // Adapters. |
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221 static MethodHandlesAdapterBlob* _adapter_code; |
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222 |
| 710 | 223 static bool ek_valid(EntryKind ek) { return (uint)ek < (uint)_EK_LIMIT; } |
| 224 static bool conv_op_valid(int op) { return (uint)op < (uint)CONV_OP_LIMIT; } | |
| 225 | |
| 226 public: | |
| 227 static bool have_entry(EntryKind ek) { return ek_valid(ek) && _entries[ek] != NULL; } | |
| 228 static MethodHandleEntry* entry(EntryKind ek) { assert(ek_valid(ek), "initialized"); | |
| 229 return _entries[ek]; } | |
| 230 static const char* entry_name(EntryKind ek) { assert(ek_valid(ek), "oob"); | |
| 231 return _entry_names[ek]; } | |
| 232 static EntryKind adapter_entry_kind(int op) { assert(conv_op_valid(op), "oob"); | |
| 233 return EntryKind(_adapter_mh_first + op); } | |
| 234 | |
| 235 static void init_entry(EntryKind ek, MethodHandleEntry* me) { | |
| 236 assert(ek_valid(ek), "oob"); | |
| 237 assert(_entries[ek] == NULL, "no double initialization"); | |
| 238 _entries[ek] = me; | |
| 239 } | |
| 240 | |
| 1304 | 241 // Some adapter helper functions. |
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242 static EntryKind ek_original_kind(EntryKind ek) { |
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243 if (ek <= _adapter_mh_last) return ek; |
| 1304 | 244 switch (ek) { |
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245 case _adapter_opt_swap_1: |
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246 case _adapter_opt_swap_2: |
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247 return _adapter_swap_args; |
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248 case _adapter_opt_rot_1_up: |
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249 case _adapter_opt_rot_1_down: |
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250 case _adapter_opt_rot_2_up: |
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251 case _adapter_opt_rot_2_down: |
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252 return _adapter_rot_args; |
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253 case _adapter_opt_i2i: |
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254 case _adapter_opt_l2i: |
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255 case _adapter_opt_d2f: |
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256 case _adapter_opt_i2l: |
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257 case _adapter_opt_f2d: |
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258 return _adapter_prim_to_prim; |
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259 case _adapter_opt_unboxi: |
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260 case _adapter_opt_unboxl: |
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261 return _adapter_ref_to_prim; |
| 1304 | 262 } |
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263 if (ek >= _adapter_opt_spread_FIRST && ek <= _adapter_opt_spread_LAST) |
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264 return _adapter_spread_args; |
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265 if (ek >= _adapter_opt_collect_FIRST && ek <= _adapter_opt_collect_LAST) |
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266 return _adapter_collect_args; |
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267 if (ek >= _adapter_opt_fold_FIRST && ek <= _adapter_opt_fold_LAST) |
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268 return _adapter_fold_args; |
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269 if (ek >= _adapter_opt_return_FIRST && ek <= _adapter_opt_return_LAST) |
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270 return _adapter_opt_return_any; |
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271 if (ek == _adapter_opt_profiling) |
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272 return _adapter_retype_only; |
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273 assert(false, "oob"); |
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274 return _EK_LIMIT; |
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275 } |
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276 |
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277 static bool ek_supported(MethodHandles::EntryKind ek); |
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278 |
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279 static BasicType ek_bound_mh_arg_type(EntryKind ek) { |
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280 switch (ek) { |
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281 case _bound_int_mh : // fall-thru |
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282 case _bound_int_direct_mh : return T_INT; |
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283 case _bound_long_mh : // fall-thru |
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284 case _bound_long_direct_mh : return T_LONG; |
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285 default : return T_OBJECT; |
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286 } |
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287 } |
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288 |
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289 static int ek_adapter_opt_swap_slots(EntryKind ek) { |
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290 switch (ek) { |
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291 case _adapter_opt_swap_1 : return 1; |
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292 case _adapter_opt_swap_2 : return 2; |
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293 case _adapter_opt_rot_1_up : return 1; |
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294 case _adapter_opt_rot_1_down : return 1; |
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295 case _adapter_opt_rot_2_up : return 2; |
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296 case _adapter_opt_rot_2_down : return 2; |
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297 default : ShouldNotReachHere(); return -1; |
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298 } |
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299 } |
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300 |
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301 static int ek_adapter_opt_swap_mode(EntryKind ek) { |
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302 switch (ek) { |
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303 case _adapter_opt_swap_1 : return 0; |
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304 case _adapter_opt_swap_2 : return 0; |
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305 case _adapter_opt_rot_1_up : return 1; |
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306 case _adapter_opt_rot_1_down : return -1; |
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307 case _adapter_opt_rot_2_up : return 1; |
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308 case _adapter_opt_rot_2_down : return -1; |
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309 default : ShouldNotReachHere(); return 0; |
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310 } |
| 1304 | 311 } |
| 312 | |
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313 static int ek_adapter_opt_collect_count(EntryKind ek) { |
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314 assert(ek >= _adapter_opt_collect_FIRST && ek <= _adapter_opt_collect_LAST || |
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315 ek >= _adapter_opt_fold_FIRST && ek <= _adapter_opt_fold_LAST, ""); |
| 1304 | 316 switch (ek) { |
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317 case _adapter_opt_collect_0_ref : return 0; |
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318 case _adapter_opt_filter_S0_ref : |
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319 case _adapter_opt_filter_S1_ref : |
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320 case _adapter_opt_filter_S2_ref : |
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321 case _adapter_opt_filter_S3_ref : |
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322 case _adapter_opt_filter_S4_ref : |
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323 case _adapter_opt_filter_S5_ref : |
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324 case _adapter_opt_fold_1_ref : |
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325 case _adapter_opt_collect_1_ref : return 1; |
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326 case _adapter_opt_collect_2_S0_ref : |
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327 case _adapter_opt_collect_2_S1_ref : |
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328 case _adapter_opt_collect_2_S2_ref : |
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329 case _adapter_opt_collect_2_S3_ref : |
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330 case _adapter_opt_collect_2_S4_ref : |
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331 case _adapter_opt_collect_2_S5_ref : |
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332 case _adapter_opt_fold_2_ref : |
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333 case _adapter_opt_collect_2_ref : return 2; |
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334 case _adapter_opt_fold_3_ref : |
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335 case _adapter_opt_collect_3_ref : return 3; |
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336 case _adapter_opt_fold_4_ref : |
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337 case _adapter_opt_collect_4_ref : return 4; |
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338 case _adapter_opt_fold_5_ref : |
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339 case _adapter_opt_collect_5_ref : return 5; |
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340 default : return -1; // sentinel value for "variable" |
| 1304 | 341 } |
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342 } |
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343 |
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344 static int ek_adapter_opt_collect_slot(EntryKind ek) { |
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345 assert(ek >= _adapter_opt_collect_FIRST && ek <= _adapter_opt_collect_LAST || |
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346 ek >= _adapter_opt_fold_FIRST && ek <= _adapter_opt_fold_LAST, ""); |
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347 switch (ek) { |
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348 case _adapter_opt_collect_2_S0_ref : |
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349 case _adapter_opt_filter_S0_ref : return 0; |
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350 case _adapter_opt_collect_2_S1_ref : |
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351 case _adapter_opt_filter_S1_ref : return 1; |
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352 case _adapter_opt_collect_2_S2_ref : |
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353 case _adapter_opt_filter_S2_ref : return 2; |
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354 case _adapter_opt_collect_2_S3_ref : |
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355 case _adapter_opt_filter_S3_ref : return 3; |
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356 case _adapter_opt_collect_2_S4_ref : |
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357 case _adapter_opt_filter_S4_ref : return 4; |
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358 case _adapter_opt_collect_2_S5_ref : |
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359 case _adapter_opt_filter_S5_ref : return 5; |
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360 default : return -1; // sentinel value for "variable" |
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361 } |
| 1304 | 362 } |
| 363 | |
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364 static BasicType ek_adapter_opt_collect_type(EntryKind ek) { |
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365 assert(ek >= _adapter_opt_collect_FIRST && ek <= _adapter_opt_collect_LAST || |
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366 ek >= _adapter_opt_fold_FIRST && ek <= _adapter_opt_fold_LAST, ""); |
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367 switch (ek) { |
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368 case _adapter_opt_fold_int : |
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369 case _adapter_opt_collect_int : return T_INT; |
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370 case _adapter_opt_fold_long : |
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371 case _adapter_opt_collect_long : return T_LONG; |
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372 case _adapter_opt_fold_float : |
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373 case _adapter_opt_collect_float : return T_FLOAT; |
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374 case _adapter_opt_fold_double : |
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375 case _adapter_opt_collect_double : return T_DOUBLE; |
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376 case _adapter_opt_fold_void : |
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377 case _adapter_opt_collect_void : return T_VOID; |
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378 default : return T_OBJECT; |
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379 } |
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380 } |
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381 |
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382 static int ek_adapter_opt_return_slot(EntryKind ek) { |
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383 assert(ek >= _adapter_opt_return_FIRST && ek <= _adapter_opt_return_LAST, ""); |
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384 switch (ek) { |
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385 case _adapter_opt_return_S0_ref : return 0; |
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386 case _adapter_opt_return_S1_ref : return 1; |
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387 case _adapter_opt_return_S2_ref : return 2; |
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388 case _adapter_opt_return_S3_ref : return 3; |
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389 case _adapter_opt_return_S4_ref : return 4; |
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390 case _adapter_opt_return_S5_ref : return 5; |
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391 default : return -1; // sentinel value for "variable" |
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392 } |
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393 } |
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394 |
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395 static BasicType ek_adapter_opt_return_type(EntryKind ek) { |
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396 assert(ek >= _adapter_opt_return_FIRST && ek <= _adapter_opt_return_LAST, ""); |
| 1304 | 397 switch (ek) { |
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398 case _adapter_opt_return_int : return T_INT; |
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399 case _adapter_opt_return_long : return T_LONG; |
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400 case _adapter_opt_return_float : return T_FLOAT; |
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401 case _adapter_opt_return_double : return T_DOUBLE; |
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402 case _adapter_opt_return_void : return T_VOID; |
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403 case _adapter_opt_return_any : return T_CONFLICT; // sentinel value for "variable" |
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404 default : return T_OBJECT; |
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405 } |
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406 } |
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407 |
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408 static int ek_adapter_opt_spread_count(EntryKind ek) { |
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409 assert(ek >= _adapter_opt_spread_FIRST && ek <= _adapter_opt_spread_LAST, ""); |
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410 switch (ek) { |
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411 case _adapter_opt_spread_0 : return 0; |
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412 case _adapter_opt_spread_1_ref : return 1; |
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413 case _adapter_opt_spread_2_ref : return 2; |
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414 case _adapter_opt_spread_3_ref : return 3; |
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415 case _adapter_opt_spread_4_ref : return 4; |
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416 case _adapter_opt_spread_5_ref : return 5; |
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417 default : return -1; // sentinel value for "variable" |
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418 } |
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419 } |
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420 |
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421 static BasicType ek_adapter_opt_spread_type(EntryKind ek) { |
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422 assert(ek >= _adapter_opt_spread_FIRST && ek <= _adapter_opt_spread_LAST, ""); |
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423 switch (ek) { |
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424 // (there is no _adapter_opt_spread_boolean; we use byte) |
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425 case _adapter_opt_spread_byte : return T_BYTE; |
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426 case _adapter_opt_spread_char : return T_CHAR; |
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427 case _adapter_opt_spread_short : return T_SHORT; |
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428 case _adapter_opt_spread_int : return T_INT; |
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429 case _adapter_opt_spread_long : return T_LONG; |
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430 case _adapter_opt_spread_float : return T_FLOAT; |
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431 case _adapter_opt_spread_double : return T_DOUBLE; |
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432 default : return T_OBJECT; |
| 1304 | 433 } |
| 434 } | |
| 435 | |
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436 static methodOop raise_exception_method() { |
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437 oop rem = JNIHandles::resolve(_raise_exception_method); |
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438 assert(rem == NULL || rem->is_method(), ""); |
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439 return (methodOop) rem; |
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440 } |
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441 static void set_raise_exception_method(methodOop rem) { |
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442 assert(_raise_exception_method == NULL, ""); |
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443 _raise_exception_method = JNIHandles::make_global(Handle(rem)); |
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444 } |
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445 static methodOop resolve_raise_exception_method(TRAPS); |
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446 // call raise_exception_method from C code: |
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447 static void raise_exception(int code, oop actual, oop required, TRAPS); |
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448 |
| 710 | 449 static jint adapter_conversion(int conv_op, BasicType src, BasicType dest, |
| 450 int stack_move = 0, int vminfo = 0) { | |
| 451 assert(conv_op_valid(conv_op), "oob"); | |
| 452 jint conv = ((conv_op << CONV_OP_SHIFT) | |
| 453 | (src << CONV_SRC_TYPE_SHIFT) | |
| 454 | (dest << CONV_DEST_TYPE_SHIFT) | |
| 455 | (stack_move << CONV_STACK_MOVE_SHIFT) | |
| 456 | (vminfo << CONV_VMINFO_SHIFT) | |
| 457 ); | |
| 458 assert(adapter_conversion_op(conv) == conv_op, "decode conv_op"); | |
| 459 assert(adapter_conversion_src_type(conv) == src, "decode src"); | |
| 460 assert(adapter_conversion_dest_type(conv) == dest, "decode dest"); | |
| 461 assert(adapter_conversion_stack_move(conv) == stack_move, "decode stack_move"); | |
| 462 assert(adapter_conversion_vminfo(conv) == vminfo, "decode vminfo"); | |
| 463 return conv; | |
| 464 } | |
| 465 static int adapter_conversion_op(jint conv) { | |
| 466 return ((conv >> CONV_OP_SHIFT) & 0xF); | |
| 467 } | |
| 468 static BasicType adapter_conversion_src_type(jint conv) { | |
| 469 return (BasicType)((conv >> CONV_SRC_TYPE_SHIFT) & 0xF); | |
| 470 } | |
| 471 static BasicType adapter_conversion_dest_type(jint conv) { | |
| 472 return (BasicType)((conv >> CONV_DEST_TYPE_SHIFT) & 0xF); | |
| 473 } | |
| 474 static int adapter_conversion_stack_move(jint conv) { | |
| 475 return (conv >> CONV_STACK_MOVE_SHIFT); | |
| 476 } | |
| 477 static int adapter_conversion_vminfo(jint conv) { | |
| 478 return (conv >> CONV_VMINFO_SHIFT) & CONV_VMINFO_MASK; | |
| 479 } | |
| 480 | |
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481 // Bit mask of conversion_op values. May vary by platform. |
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482 static int adapter_conversion_ops_supported_mask(); |
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483 |
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484 static bool conv_op_supported(int conv_op) { |
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485 assert(conv_op_valid(conv_op), ""); |
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486 return ((adapter_conversion_ops_supported_mask() & nth_bit(conv_op)) != 0); |
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487 } |
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488 |
| 710 | 489 // Offset in words that the interpreter stack pointer moves when an argument is pushed. |
| 490 // The stack_move value must always be a multiple of this. | |
| 491 static int stack_move_unit() { | |
| 1506 | 492 return frame::interpreter_frame_expression_stack_direction() * Interpreter::stackElementWords; |
| 710 | 493 } |
| 494 | |
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495 // Adapter frame traversal. (Implementation-specific.) |
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496 static frame ricochet_frame_sender(const frame& fr, RegisterMap* reg_map); |
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497 static void ricochet_frame_oops_do(const frame& fr, OopClosure* blk, const RegisterMap* reg_map); |
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498 |
| 710 | 499 enum { CONV_VMINFO_SIGN_FLAG = 0x80 }; |
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500 // Shift values for prim-to-prim conversions. |
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501 static int adapter_prim_to_prim_subword_vminfo(BasicType dest) { |
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502 if (dest == T_BOOLEAN) return (BitsPerInt - 1); // boolean is 1 bit |
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503 if (dest == T_CHAR) return (BitsPerInt - BitsPerShort); |
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504 if (dest == T_BYTE) return (BitsPerInt - BitsPerByte ) | CONV_VMINFO_SIGN_FLAG; |
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505 if (dest == T_SHORT) return (BitsPerInt - BitsPerShort) | CONV_VMINFO_SIGN_FLAG; |
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506 return 0; // case T_INT |
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507 } |
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508 // Shift values for unboxing a primitive. |
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509 static int adapter_unbox_subword_vminfo(BasicType dest) { |
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510 if (dest == T_BOOLEAN) return (BitsPerInt - BitsPerByte ); // implemented as 1 byte |
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511 if (dest == T_CHAR) return (BitsPerInt - BitsPerShort); |
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512 if (dest == T_BYTE) return (BitsPerInt - BitsPerByte ) | CONV_VMINFO_SIGN_FLAG; |
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513 if (dest == T_SHORT) return (BitsPerInt - BitsPerShort) | CONV_VMINFO_SIGN_FLAG; |
| 710 | 514 return 0; // case T_INT |
| 515 } | |
| 516 // Here is the transformation the i2i adapter must perform: | |
| 517 static int truncate_subword_from_vminfo(jint value, int vminfo) { | |
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518 int shift = vminfo & ~CONV_VMINFO_SIGN_FLAG; |
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519 jint tem = value << shift; |
| 710 | 520 if ((vminfo & CONV_VMINFO_SIGN_FLAG) != 0) { |
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521 return (jint)tem >> shift; |
| 710 | 522 } else { |
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523 return (juint)tem >> shift; |
| 710 | 524 } |
| 525 } | |
| 526 | |
| 527 static inline address from_compiled_entry(EntryKind ek); | |
| 528 static inline address from_interpreted_entry(EntryKind ek); | |
| 529 | |
| 530 // helpers for decode_method. | |
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531 static methodOop decode_methodOop(methodOop m, int& decode_flags_result); |
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532 static methodHandle decode_vmtarget(oop vmtarget, int vmindex, oop mtype, KlassHandle& receiver_limit_result, int& decode_flags_result); |
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533 static methodHandle decode_MemberName(oop mname, KlassHandle& receiver_limit_result, int& decode_flags_result); |
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534 static methodHandle decode_MethodHandle(oop mh, KlassHandle& receiver_limit_result, int& decode_flags_result); |
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535 static methodHandle decode_DirectMethodHandle(oop mh, KlassHandle& receiver_limit_result, int& decode_flags_result); |
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536 static methodHandle decode_BoundMethodHandle(oop mh, KlassHandle& receiver_limit_result, int& decode_flags_result); |
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537 static methodHandle decode_AdapterMethodHandle(oop mh, KlassHandle& receiver_limit_result, int& decode_flags_result); |
| 710 | 538 |
| 539 // Find out how many stack slots an mh pushes or pops. | |
| 540 // The result is *not* reported as a multiple of stack_move_unit(); | |
| 541 // It is a signed net number of pushes (a difference in vmslots). | |
| 542 // To compare with a stack_move value, first multiply by stack_move_unit(). | |
| 543 static int decode_MethodHandle_stack_pushes(oop mh); | |
| 544 | |
| 545 public: | |
| 546 // working with member names | |
| 547 static void resolve_MemberName(Handle mname, TRAPS); // compute vmtarget/vmindex from name/type | |
| 548 static void expand_MemberName(Handle mname, int suppress, TRAPS); // expand defc/name/type if missing | |
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549 static Handle new_MemberName(TRAPS); // must be followed by init_MemberName |
| 710 | 550 static void init_MemberName(oop mname_oop, oop target); // compute vmtarget/vmindex from target |
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551 static void init_MemberName(oop mname_oop, methodOop m, bool do_dispatch = true); |
| 710 | 552 static void init_MemberName(oop mname_oop, klassOop field_holder, AccessFlags mods, int offset); |
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553 static int find_MemberNames(klassOop k, Symbol* name, Symbol* sig, |
| 710 | 554 int mflags, klassOop caller, |
| 555 int skip, objArrayOop results); | |
| 556 // bit values for suppress argument to expand_MemberName: | |
| 557 enum { _suppress_defc = 1, _suppress_name = 2, _suppress_type = 4 }; | |
| 558 | |
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559 // Generate MethodHandles adapters. |
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560 static void generate_adapters(); |
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561 |
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562 // Called from InterpreterGenerator and MethodHandlesAdapterGenerator. |
| 710 | 563 static address generate_method_handle_interpreter_entry(MacroAssembler* _masm); |
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564 static void generate_method_handle_stub(MacroAssembler* _masm, EntryKind ek); |
| 710 | 565 |
| 566 // argument list parsing | |
| 567 static int argument_slot(oop method_type, int arg); | |
| 568 static int argument_slot_count(oop method_type) { return argument_slot(method_type, -1); } | |
| 569 static int argument_slot_to_argnum(oop method_type, int argslot); | |
| 570 | |
| 571 // Runtime support | |
| 572 enum { // bit-encoded flags from decode_method or decode_vmref | |
| 573 _dmf_has_receiver = 0x01, // target method has leading reference argument | |
| 574 _dmf_does_dispatch = 0x02, // method handle performs virtual or interface dispatch | |
| 575 _dmf_from_interface = 0x04, // peforms interface dispatch | |
| 576 _DMF_DIRECT_MASK = (_dmf_from_interface*2 - _dmf_has_receiver), | |
| 577 _dmf_binds_method = 0x08, | |
| 578 _dmf_binds_argument = 0x10, | |
| 579 _DMF_BOUND_MASK = (_dmf_binds_argument*2 - _dmf_binds_method), | |
| 580 _dmf_adapter_lsb = 0x20, | |
| 581 _DMF_ADAPTER_MASK = (_dmf_adapter_lsb << CONV_OP_LIMIT) - _dmf_adapter_lsb | |
| 582 }; | |
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583 static methodHandle decode_method(oop x, KlassHandle& receiver_limit_result, int& decode_flags_result); |
| 710 | 584 enum { |
| 585 // format of query to getConstant: | |
| 586 GC_JVM_PUSH_LIMIT = 0, | |
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587 GC_JVM_STACK_MOVE_UNIT = 1, |
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588 GC_CONV_OP_IMPLEMENTED_MASK = 2, |
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589 GC_OP_ROT_ARGS_DOWN_LIMIT_BIAS = 3, |
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590 GC_COUNT_GWT = 4, |
| 710 | 591 |
| 592 // format of result from getTarget / encode_target: | |
| 593 ETF_HANDLE_OR_METHOD_NAME = 0, // all available data (immediate MH or method) | |
| 594 ETF_DIRECT_HANDLE = 1, // ultimate method handle (will be a DMH, may be self) | |
| 595 ETF_METHOD_NAME = 2, // ultimate method as MemberName | |
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596 ETF_REFLECT_METHOD = 3, // ultimate method as java.lang.reflect object (sans refClass) |
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597 ETF_FORCE_DIRECT_HANDLE = 64, |
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598 ETF_COMPILE_DIRECT_HANDLE = 65, |
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599 |
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600 // ad hoc constants |
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601 OP_ROT_ARGS_DOWN_LIMIT_BIAS = -1 |
| 710 | 602 }; |
| 603 static int get_named_constant(int which, Handle name_box, TRAPS); | |
| 604 static oop encode_target(Handle mh, int format, TRAPS); // report vmtarget (to Java code) | |
| 605 static bool class_cast_needed(klassOop src, klassOop dst); | |
| 606 | |
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607 static instanceKlassHandle resolve_instance_klass(oop java_mirror_oop, TRAPS); |
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608 static instanceKlassHandle resolve_instance_klass(jclass java_mirror_jh, TRAPS) { |
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609 return resolve_instance_klass(JNIHandles::resolve(java_mirror_jh), THREAD); |
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610 } |
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611 |
| 710 | 612 private: |
| 613 // These checkers operate on a pair of whole MethodTypes: | |
| 614 static const char* check_method_type_change(oop src_mtype, int src_beg, int src_end, | |
| 615 int insert_argnum, oop insert_type, | |
| 616 int change_argnum, oop change_type, | |
| 617 int delete_argnum, | |
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618 oop dst_mtype, int dst_beg, int dst_end, |
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619 bool raw = false); |
| 710 | 620 static const char* check_method_type_insertion(oop src_mtype, |
| 621 int insert_argnum, oop insert_type, | |
| 622 oop dst_mtype) { | |
| 623 oop no_ref = NULL; | |
| 624 return check_method_type_change(src_mtype, 0, -1, | |
| 625 insert_argnum, insert_type, | |
| 626 -1, no_ref, -1, dst_mtype, 0, -1); | |
| 627 } | |
| 628 static const char* check_method_type_conversion(oop src_mtype, | |
| 629 int change_argnum, oop change_type, | |
| 630 oop dst_mtype) { | |
| 631 oop no_ref = NULL; | |
| 632 return check_method_type_change(src_mtype, 0, -1, -1, no_ref, | |
| 633 change_argnum, change_type, | |
| 634 -1, dst_mtype, 0, -1); | |
| 635 } | |
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636 static const char* check_method_type_passthrough(oop src_mtype, oop dst_mtype, bool raw) { |
| 710 | 637 oop no_ref = NULL; |
| 638 return check_method_type_change(src_mtype, 0, -1, | |
| 639 -1, no_ref, -1, no_ref, -1, | |
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640 dst_mtype, 0, -1, raw); |
| 710 | 641 } |
| 642 | |
| 643 // These checkers operate on pairs of argument or return types: | |
| 644 static const char* check_argument_type_change(BasicType src_type, klassOop src_klass, | |
| 645 BasicType dst_type, klassOop dst_klass, | |
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646 int argnum, bool raw = false); |
| 710 | 647 |
| 648 static const char* check_argument_type_change(oop src_type, oop dst_type, | |
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649 int argnum, bool raw = false) { |
| 710 | 650 klassOop src_klass = NULL, dst_klass = NULL; |
| 651 BasicType src_bt = java_lang_Class::as_BasicType(src_type, &src_klass); | |
| 652 BasicType dst_bt = java_lang_Class::as_BasicType(dst_type, &dst_klass); | |
| 653 return check_argument_type_change(src_bt, src_klass, | |
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654 dst_bt, dst_klass, argnum, raw); |
| 710 | 655 } |
| 656 | |
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657 static const char* check_return_type_change(oop src_type, oop dst_type, bool raw = false) { |
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658 return check_argument_type_change(src_type, dst_type, -1, raw); |
| 710 | 659 } |
| 660 | |
| 661 static const char* check_return_type_change(BasicType src_type, klassOop src_klass, | |
| 662 BasicType dst_type, klassOop dst_klass) { | |
| 663 return check_argument_type_change(src_type, src_klass, dst_type, dst_klass, -1); | |
| 664 } | |
| 665 | |
| 666 static const char* check_method_receiver(methodOop m, klassOop passed_recv_type); | |
| 667 | |
| 668 // These verifiers can block, and will throw an error if the checking fails: | |
| 669 static void verify_vmslots(Handle mh, TRAPS); | |
| 670 static void verify_vmargslot(Handle mh, int argnum, int argslot, TRAPS); | |
| 671 | |
| 672 static void verify_method_type(methodHandle m, Handle mtype, | |
| 673 bool has_bound_oop, | |
| 674 KlassHandle bound_oop_type, | |
| 675 TRAPS); | |
| 676 | |
| 677 static void verify_method_signature(methodHandle m, Handle mtype, | |
| 678 int first_ptype_pos, | |
| 679 KlassHandle insert_ptype, TRAPS); | |
| 680 | |
| 681 static void verify_DirectMethodHandle(Handle mh, methodHandle m, TRAPS); | |
| 682 static void verify_BoundMethodHandle(Handle mh, Handle target, int argnum, | |
| 683 bool direct_to_method, TRAPS); | |
| 684 static void verify_BoundMethodHandle_with_receiver(Handle mh, methodHandle m, TRAPS); | |
| 685 static void verify_AdapterMethodHandle(Handle mh, int argnum, TRAPS); | |
| 686 | |
| 687 public: | |
| 688 | |
| 689 // Fill in the fields of a DirectMethodHandle mh. (MH.type must be pre-filled.) | |
| 690 static void init_DirectMethodHandle(Handle mh, methodHandle method, bool do_dispatch, TRAPS); | |
| 691 | |
| 692 // Fill in the fields of a BoundMethodHandle mh. (MH.type, BMH.argument must be pre-filled.) | |
| 693 static void init_BoundMethodHandle(Handle mh, Handle target, int argnum, TRAPS); | |
| 694 static void init_BoundMethodHandle_with_receiver(Handle mh, | |
| 695 methodHandle original_m, | |
| 696 KlassHandle receiver_limit, | |
| 697 int decode_flags, | |
| 698 TRAPS); | |
| 699 | |
| 700 // Fill in the fields of an AdapterMethodHandle mh. (MH.type must be pre-filled.) | |
| 701 static void init_AdapterMethodHandle(Handle mh, Handle target, int argnum, TRAPS); | |
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702 static void ensure_vmlayout_field(Handle target, TRAPS); |
| 710 | 703 |
| 704 #ifdef ASSERT | |
| 705 static bool spot_check_entry_names(); | |
| 706 #endif | |
| 707 | |
| 708 private: | |
| 709 static methodHandle dispatch_decoded_method(methodHandle m, | |
| 710 KlassHandle receiver_limit, | |
| 711 int decode_flags, | |
| 712 KlassHandle receiver_klass, | |
| 713 TRAPS); | |
| 714 | |
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715 public: |
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716 static bool is_float_fixed_reinterpretation_cast(BasicType src, BasicType dst); |
| 710 | 717 static bool same_basic_type_for_arguments(BasicType src, BasicType dst, |
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718 bool raw = false, |
| 710 | 719 bool for_return = false); |
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720 static bool same_basic_type_for_returns(BasicType src, BasicType dst, bool raw = false) { |
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721 return same_basic_type_for_arguments(src, dst, raw, true); |
| 710 | 722 } |
| 723 | |
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724 static Symbol* convert_to_signature(oop type_str, bool polymorphic, TRAPS); |
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725 |
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726 #ifdef TARGET_ARCH_x86 |
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727 # include "methodHandles_x86.hpp" |
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728 #endif |
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729 #ifdef TARGET_ARCH_sparc |
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730 # include "methodHandles_sparc.hpp" |
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731 #endif |
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732 #ifdef TARGET_ARCH_zero |
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733 # include "methodHandles_zero.hpp" |
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734 #endif |
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735 #ifdef TARGET_ARCH_arm |
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736 # include "methodHandles_arm.hpp" |
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737 #endif |
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738 #ifdef TARGET_ARCH_ppc |
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739 # include "methodHandles_ppc.hpp" |
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740 #endif |
| 710 | 741 }; |
| 742 | |
| 743 | |
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744 // Access methods for the "entry" field of a java.lang.invoke.MethodHandle. |
| 710 | 745 // The field is primarily a jump target for compiled calls. |
| 746 // However, we squirrel away some nice pointers for other uses, | |
| 747 // just before the jump target. | |
| 748 // Aspects of a method handle entry: | |
| 749 // - from_compiled_entry - stub used when compiled code calls the MH | |
| 750 // - from_interpreted_entry - stub used when the interpreter calls the MH | |
| 751 // - type_checking_entry - stub for runtime casting between MHForm siblings (NYI) | |
| 752 class MethodHandleEntry { | |
| 753 public: | |
| 754 class Data { | |
| 755 friend class MethodHandleEntry; | |
| 756 size_t _total_size; // size including Data and code stub | |
| 757 MethodHandleEntry* _type_checking_entry; | |
| 758 address _from_interpreted_entry; | |
| 759 MethodHandleEntry* method_entry() { return (MethodHandleEntry*)(this + 1); } | |
| 760 }; | |
| 761 | |
| 762 Data* data() { return (Data*)this - 1; } | |
| 763 | |
| 764 address start_address() { return (address) data(); } | |
| 765 address end_address() { return start_address() + data()->_total_size; } | |
| 766 | |
| 767 address from_compiled_entry() { return (address) this; } | |
| 768 | |
| 769 address from_interpreted_entry() { return data()->_from_interpreted_entry; } | |
| 770 void set_from_interpreted_entry(address e) { data()->_from_interpreted_entry = e; } | |
| 771 | |
| 772 MethodHandleEntry* type_checking_entry() { return data()->_type_checking_entry; } | |
| 773 void set_type_checking_entry(MethodHandleEntry* e) { data()->_type_checking_entry = e; } | |
| 774 | |
| 775 void set_end_address(address end_addr) { | |
| 776 size_t total_size = end_addr - start_address(); | |
| 777 assert(total_size > 0 && total_size < 0x1000, "reasonable end address"); | |
| 778 data()->_total_size = total_size; | |
| 779 } | |
| 780 | |
| 781 // Compiler support: | |
| 782 static int from_interpreted_entry_offset_in_bytes() { | |
| 783 return (int)( offset_of(Data, _from_interpreted_entry) - sizeof(Data) ); | |
| 784 } | |
| 785 static int type_checking_entry_offset_in_bytes() { | |
| 786 return (int)( offset_of(Data, _from_interpreted_entry) - sizeof(Data) ); | |
| 787 } | |
| 788 | |
| 789 static address start_compiled_entry(MacroAssembler* _masm, | |
| 790 address interpreted_entry = NULL); | |
| 791 static MethodHandleEntry* finish_compiled_entry(MacroAssembler* masm, address start_addr); | |
| 792 }; | |
| 793 | |
| 794 address MethodHandles::from_compiled_entry(EntryKind ek) { return entry(ek)->from_compiled_entry(); } | |
| 795 address MethodHandles::from_interpreted_entry(EntryKind ek) { return entry(ek)->from_interpreted_entry(); } | |
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796 |
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797 |
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798 //------------------------------------------------------------------------------ |
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799 // MethodHandlesAdapterGenerator |
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800 // |
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801 class MethodHandlesAdapterGenerator : public StubCodeGenerator { |
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802 public: |
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803 MethodHandlesAdapterGenerator(CodeBuffer* code) : StubCodeGenerator(code, PrintMethodHandleStubs) {} |
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804 |
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805 void generate(); |
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806 }; |
| 1972 | 807 |
| 808 #endif // SHARE_VM_PRIMS_METHODHANDLES_HPP |