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annotate src/cpu/x86/vm/methodHandles_x86.cpp @ 6273:4c8f2a12e757 hs24-b20

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Merge
author twisti
date Fri, 10 Aug 2012 17:50:24 -0700
parents 1d7922586cf6
children da91efe96a93
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1 /*
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26 #include "interpreter/interpreter.hpp"
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27 #include "interpreter/interpreterRuntime.hpp"
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28 #include "memory/allocation.inline.hpp"
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29 #include "prims/methodHandles.hpp"
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30
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31 #define __ _masm->
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32
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33 #ifdef PRODUCT
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34 #define BLOCK_COMMENT(str) /* nothing */
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35 #define STOP(error) stop(error)
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36 #else
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37 #define BLOCK_COMMENT(str) __ block_comment(str)
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38 #define STOP(error) block_comment(error); __ stop(error)
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39 #endif
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40
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41 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
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42
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43 // Workaround for C++ overloading nastiness on '0' for RegisterOrConstant.
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44 static RegisterOrConstant constant(int value) {
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45 return RegisterOrConstant(value);
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46 }
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47
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48 void MethodHandles::load_klass_from_Class(MacroAssembler* _masm, Register klass_reg) {
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49 if (VerifyMethodHandles)
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50 verify_klass(_masm, klass_reg, SystemDictionaryHandles::Class_klass(),
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51 "MH argument is a Class");
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52 __ load_heap_oop(klass_reg, Address(klass_reg, java_lang_Class::klass_offset_in_bytes()));
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53 }
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54
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55 #ifdef ASSERT
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56 static int check_nonzero(const char* xname, int x) {
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57 assert(x != 0, err_msg("%s should be nonzero", xname));
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58 return x;
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59 }
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60 #define NONZERO(x) check_nonzero(#x, x)
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61 #else //ASSERT
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62 #define NONZERO(x) (x)
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63 #endif //ASSERT
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64
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65 #ifdef ASSERT
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66 void MethodHandles::verify_klass(MacroAssembler* _masm,
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67 Register obj, KlassHandle klass,
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68 const char* error_message) {
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69 oop* klass_addr = klass.raw_value();
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70 assert(klass_addr >= SystemDictionaryHandles::Object_klass().raw_value() &&
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71 klass_addr <= SystemDictionaryHandles::Long_klass().raw_value(),
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72 "must be one of the SystemDictionaryHandles");
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73 Register temp = rdi;
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74 Register temp2 = noreg;
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75 LP64_ONLY(temp2 = rscratch1); // used by MacroAssembler::cmpptr
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76 Label L_ok, L_bad;
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77 BLOCK_COMMENT("verify_klass {");
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78 __ verify_oop(obj);
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79 __ testptr(obj, obj);
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80 __ jcc(Assembler::zero, L_bad);
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81 __ push(temp); if (temp2 != noreg) __ push(temp2);
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82 #define UNPUSH { if (temp2 != noreg) __ pop(temp2); __ pop(temp); }
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83 __ load_klass(temp, obj);
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84 __ cmpptr(temp, ExternalAddress((address) klass_addr));
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85 __ jcc(Assembler::equal, L_ok);
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86 intptr_t super_check_offset = klass->super_check_offset();
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87 __ movptr(temp, Address(temp, super_check_offset));
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88 __ cmpptr(temp, ExternalAddress((address) klass_addr));
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89 __ jcc(Assembler::equal, L_ok);
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90 UNPUSH;
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91 __ bind(L_bad);
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92 __ STOP(error_message);
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93 __ BIND(L_ok);
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94 UNPUSH;
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95 BLOCK_COMMENT("} verify_klass");
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96 }
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97
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98 void MethodHandles::verify_ref_kind(MacroAssembler* _masm, int ref_kind, Register member_reg, Register temp) {
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99 Label L;
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100 BLOCK_COMMENT("verify_ref_kind {");
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101 __ movl(temp, Address(member_reg, NONZERO(java_lang_invoke_MemberName::flags_offset_in_bytes())));
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102 __ shrl(temp, java_lang_invoke_MemberName::MN_REFERENCE_KIND_SHIFT);
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103 __ andl(temp, java_lang_invoke_MemberName::MN_REFERENCE_KIND_MASK);
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104 __ cmpl(temp, ref_kind);
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105 __ jcc(Assembler::equal, L);
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106 { char* buf = NEW_C_HEAP_ARRAY(char, 100, mtInternal);
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107 jio_snprintf(buf, 100, "verify_ref_kind expected %x", ref_kind);
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108 if (ref_kind == JVM_REF_invokeVirtual ||
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109 ref_kind == JVM_REF_invokeSpecial)
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110 // could do this for all ref_kinds, but would explode assembly code size
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111 trace_method_handle(_masm, buf);
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112 __ STOP(buf);
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113 }
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114 BLOCK_COMMENT("} verify_ref_kind");
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115 __ bind(L);
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116 }
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117
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118 #endif //ASSERT
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119
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120 void MethodHandles::jump_from_method_handle(MacroAssembler* _masm, Register method, Register temp,
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121 bool for_compiler_entry) {
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122 assert(method == rbx, "interpreter calling convention");
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123 __ verify_oop(method);
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124
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125 if (!for_compiler_entry && JvmtiExport::can_post_interpreter_events()) {
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126 Label run_compiled_code;
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127 // JVMTI events, such as single-stepping, are implemented partly by avoiding running
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128 // compiled code in threads for which the event is enabled. Check here for
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129 // interp_only_mode if these events CAN be enabled.
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130 #ifdef _LP64
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131 Register rthread = r15_thread;
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132 #else
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133 Register rthread = temp;
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134 __ get_thread(rthread);
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135 #endif
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136 // interp_only is an int, on little endian it is sufficient to test the byte only
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137 // Is a cmpl faster?
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138 __ cmpb(Address(rthread, JavaThread::interp_only_mode_offset()), 0);
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139 __ jccb(Assembler::zero, run_compiled_code);
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140 __ jmp(Address(method, methodOopDesc::interpreter_entry_offset()));
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141 __ BIND(run_compiled_code);
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142 }
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143
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144 const ByteSize entry_offset = for_compiler_entry ? methodOopDesc::from_compiled_offset() :
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145 methodOopDesc::from_interpreted_offset();
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146 __ jmp(Address(method, entry_offset));
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147 }
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148
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149 void MethodHandles::jump_to_lambda_form(MacroAssembler* _masm,
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150 Register recv, Register method_temp,
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151 Register temp2,
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152 bool for_compiler_entry) {
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153 BLOCK_COMMENT("jump_to_lambda_form {");
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154 // This is the initial entry point of a lazy method handle.
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155 // After type checking, it picks up the invoker from the LambdaForm.
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156 assert_different_registers(recv, method_temp, temp2);
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157 assert(recv != noreg, "required register");
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158 assert(method_temp == rbx, "required register for loading method");
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159
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160 //NOT_PRODUCT({ FlagSetting fs(TraceMethodHandles, true); trace_method_handle(_masm, "LZMH"); });
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161
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162 // Load the invoker, as MH -> MH.form -> LF.vmentry
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163 __ verify_oop(recv);
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164 __ load_heap_oop(method_temp, Address(recv, NONZERO(java_lang_invoke_MethodHandle::form_offset_in_bytes())));
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165 __ verify_oop(method_temp);
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166 __ load_heap_oop(method_temp, Address(method_temp, NONZERO(java_lang_invoke_LambdaForm::vmentry_offset_in_bytes())));
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167 __ verify_oop(method_temp);
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168 // the following assumes that a methodOop is normally compressed in the vmtarget field:
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169 __ load_heap_oop(method_temp, Address(method_temp, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes())));
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170 __ verify_oop(method_temp);
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171
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172 if (VerifyMethodHandles && !for_compiler_entry) {
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173 // make sure recv is already on stack
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174 __ load_sized_value(temp2,
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175 Address(method_temp, methodOopDesc::size_of_parameters_offset()),
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176 sizeof(u2), /*is_signed*/ false);
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177 // assert(sizeof(u2) == sizeof(methodOopDesc::_size_of_parameters), "");
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178 Label L;
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179 __ cmpptr(recv, __ argument_address(temp2, -1));
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180 __ jcc(Assembler::equal, L);
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181 __ movptr(rax, __ argument_address(temp2, -1));
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182 __ STOP("receiver not on stack");
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183 __ BIND(L);
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184 }
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185
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186 jump_from_method_handle(_masm, method_temp, temp2, for_compiler_entry);
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187 BLOCK_COMMENT("} jump_to_lambda_form");
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188 }
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189
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190
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191 // Code generation
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192 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm,
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193 vmIntrinsics::ID iid) {
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194 const bool not_for_compiler_entry = false; // this is the interpreter entry
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195 assert(is_signature_polymorphic(iid), "expected invoke iid");
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196 if (iid == vmIntrinsics::_invokeGeneric ||
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197 iid == vmIntrinsics::_compiledLambdaForm) {
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198 // Perhaps surprisingly, the symbolic references visible to Java are not directly used.
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199 // They are linked to Java-generated adapters via MethodHandleNatives.linkMethod.
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200 // They all allow an appendix argument.
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201 __ hlt(); // empty stubs make SG sick
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202 return NULL;
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203 }
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204
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205 // rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted)
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206 // rbx: methodOop
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207 // rdx: argument locator (parameter slot count, added to rsp)
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208 // rcx: used as temp to hold mh or receiver
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209 // rax, rdi: garbage temps, blown away
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210 Register rdx_argp = rdx; // argument list ptr, live on error paths
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211 Register rax_temp = rax;
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212 Register rcx_mh = rcx; // MH receiver; dies quickly and is recycled
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213 Register rbx_method = rbx; // eventual target of this invocation
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214
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215 address code_start = __ pc();
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216
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217 // here's where control starts out:
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218 __ align(CodeEntryAlignment);
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219 address entry_point = __ pc();
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220
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221 if (VerifyMethodHandles) {
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222 Label L;
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223 BLOCK_COMMENT("verify_intrinsic_id {");
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224 __ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) iid);
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225 __ jcc(Assembler::equal, L);
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226 if (iid == vmIntrinsics::_linkToVirtual ||
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227 iid == vmIntrinsics::_linkToSpecial) {
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228 // could do this for all kinds, but would explode assembly code size
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229 trace_method_handle(_masm, "bad methodOop::intrinsic_id");
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230 }
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231 __ STOP("bad methodOop::intrinsic_id");
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232 __ bind(L);
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233 BLOCK_COMMENT("} verify_intrinsic_id");
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234 }
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235
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236 // First task: Find out how big the argument list is.
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237 Address rdx_first_arg_addr;
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238 int ref_kind = signature_polymorphic_intrinsic_ref_kind(iid);
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239 assert(ref_kind != 0 || iid == vmIntrinsics::_invokeBasic, "must be _invokeBasic or a linkTo intrinsic");
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240 if (ref_kind == 0 || MethodHandles::ref_kind_has_receiver(ref_kind)) {
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241 __ load_sized_value(rdx_argp,
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242 Address(rbx_method, methodOopDesc::size_of_parameters_offset()),
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243 sizeof(u2), /*is_signed*/ false);
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244 // assert(sizeof(u2) == sizeof(methodOopDesc::_size_of_parameters), "");
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245 rdx_first_arg_addr = __ argument_address(rdx_argp, -1);
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246 } else {
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247 DEBUG_ONLY(rdx_argp = noreg);
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248 }
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249
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250 if (!is_signature_polymorphic_static(iid)) {
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251 __ movptr(rcx_mh, rdx_first_arg_addr);
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252 DEBUG_ONLY(rdx_argp = noreg);
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253 }
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254
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255 // rdx_first_arg_addr is live!
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256
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257 if (TraceMethodHandles) {
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258 const char* name = vmIntrinsics::name_at(iid);
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259 if (*name == '_') name += 1;
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260 const size_t len = strlen(name) + 50;
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261 char* qname = NEW_C_HEAP_ARRAY(char, len, mtInternal);
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262 const char* suffix = "";
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263 if (vmIntrinsics::method_for(iid) == NULL ||
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264 !vmIntrinsics::method_for(iid)->access_flags().is_public()) {
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265 if (is_signature_polymorphic_static(iid))
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266 suffix = "/static";
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267 else
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268 suffix = "/private";
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269 }
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270 jio_snprintf(qname, len, "MethodHandle::interpreter_entry::%s%s", name, suffix);
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271 // note: stub look for mh in rcx
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272 trace_method_handle(_masm, qname);
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273 }
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274
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275 if (iid == vmIntrinsics::_invokeBasic) {
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276 generate_method_handle_dispatch(_masm, iid, rcx_mh, noreg, not_for_compiler_entry);
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277
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278 } else {
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279 // Adjust argument list by popping the trailing MemberName argument.
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280 Register rcx_recv = noreg;
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281 if (MethodHandles::ref_kind_has_receiver(ref_kind)) {
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282 // Load the receiver (not the MH; the actual MemberName's receiver) up from the interpreter stack.
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283 __ movptr(rcx_recv = rcx, rdx_first_arg_addr);
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284 }
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285 DEBUG_ONLY(rdx_argp = noreg);
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286 Register rbx_member = rbx_method; // MemberName ptr; incoming method ptr is dead now
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287 __ pop(rax_temp); // return address
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288 __ pop(rbx_member); // extract last argument
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289 __ push(rax_temp); // re-push return address
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290 generate_method_handle_dispatch(_masm, iid, rcx_recv, rbx_member, not_for_compiler_entry);
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291 }
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292
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293 if (PrintMethodHandleStubs) {
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294 address code_end = __ pc();
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295 tty->print_cr("--------");
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
296 tty->print_cr("method handle interpreter entry for %s", vmIntrinsics::name_at(iid));
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diff changeset
297 Disassembler::decode(code_start, code_end);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
298 tty->cr();
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
299 }
1793
d257356e35f0 6939224: MethodHandle.invokeGeneric needs to perform the correct set of conversions
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parents: 1552
diff changeset
300
710
e5b0439ef4ae 6655638: dynamic languages need method handles
jrose
parents:
diff changeset
301 return entry_point;
e5b0439ef4ae 6655638: dynamic languages need method handles
jrose
parents:
diff changeset
302 }
e5b0439ef4ae 6655638: dynamic languages need method handles
jrose
parents:
diff changeset
303
6266
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diff changeset
304 void MethodHandles::generate_method_handle_dispatch(MacroAssembler* _masm,
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
305 vmIntrinsics::ID iid,
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
306 Register receiver_reg,
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
307 Register member_reg,
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
308 bool for_compiler_entry) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
309 assert(is_signature_polymorphic(iid), "expected invoke iid");
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
310 Register rbx_method = rbx; // eventual target of this invocation
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
311 // temps used in this code are not used in *either* compiled or interpreted calling sequences
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
312 #ifdef _LP64
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
313 Register temp1 = rscratch1;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
314 Register temp2 = rscratch2;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
315 Register temp3 = rax;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
316 if (for_compiler_entry) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
317 assert(receiver_reg == (iid == vmIntrinsics::_linkToStatic ? noreg : j_rarg0), "only valid assignment");
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diff changeset
318 assert_different_registers(temp1, j_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4, j_rarg5);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
319 assert_different_registers(temp2, j_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4, j_rarg5);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
320 assert_different_registers(temp3, j_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4, j_rarg5);
710
e5b0439ef4ae 6655638: dynamic languages need method handles
jrose
parents:
diff changeset
321 }
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
322 #else
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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323 Register temp1 = (for_compiler_entry ? rsi : rdx);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
324 Register temp2 = rdi;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
325 Register temp3 = rax;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
326 if (for_compiler_entry) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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diff changeset
327 assert(receiver_reg == (iid == vmIntrinsics::_linkToStatic ? noreg : rcx), "only valid assignment");
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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328 assert_different_registers(temp1, rcx, rdx);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
329 assert_different_registers(temp2, rcx, rdx);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
330 assert_different_registers(temp3, rcx, rdx);
3363
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parents: 3336
diff changeset
331 }
167b70ff3abc 6939861: JVM should handle more conversion operations
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diff changeset
332 #endif
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
333 assert_different_registers(temp1, temp2, temp3, receiver_reg);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
334 assert_different_registers(temp1, temp2, temp3, member_reg);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
335 if (!for_compiler_entry)
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
336 assert_different_registers(temp1, temp2, temp3, saved_last_sp_register()); // don't trash lastSP
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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337
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
338 if (iid == vmIntrinsics::_invokeBasic) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
339 // indirect through MH.form.vmentry.vmtarget
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
340 jump_to_lambda_form(_masm, receiver_reg, rbx_method, temp1, for_compiler_entry);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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341
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
342 } else {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
343 // The method is a member invoker used by direct method handles.
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
344 if (VerifyMethodHandles) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
345 // make sure the trailing argument really is a MemberName (caller responsibility)
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
346 verify_klass(_masm, member_reg, SystemDictionaryHandles::MemberName_klass(),
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
347 "MemberName required for invokeVirtual etc.");
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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diff changeset
348 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
349
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
350 Address member_clazz( member_reg, NONZERO(java_lang_invoke_MemberName::clazz_offset_in_bytes()));
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
351 Address member_vmindex( member_reg, NONZERO(java_lang_invoke_MemberName::vmindex_offset_in_bytes()));
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
352 Address member_vmtarget( member_reg, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes()));
3363
167b70ff3abc 6939861: JVM should handle more conversion operations
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parents: 3336
diff changeset
353
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
354 Register temp1_recv_klass = temp1;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
355 if (iid != vmIntrinsics::_linkToStatic) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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diff changeset
356 __ verify_oop(receiver_reg);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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diff changeset
357 if (iid == vmIntrinsics::_linkToSpecial) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
358 // Don't actually load the klass; just null-check the receiver.
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
359 __ null_check(receiver_reg);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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diff changeset
360 } else {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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diff changeset
361 // load receiver klass itself
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
362 __ null_check(receiver_reg, oopDesc::klass_offset_in_bytes());
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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parents: 4939
diff changeset
363 __ load_klass(temp1_recv_klass, receiver_reg);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
364 __ verify_oop(temp1_recv_klass);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
365 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
366 BLOCK_COMMENT("check_receiver {");
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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parents: 4939
diff changeset
367 // The receiver for the MemberName must be in receiver_reg.
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff changeset
368 // Check the receiver against the MemberName.clazz
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
369 if (VerifyMethodHandles && iid == vmIntrinsics::_linkToSpecial) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
370 // Did not load it above...
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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parents: 4939
diff changeset
371 __ load_klass(temp1_recv_klass, receiver_reg);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
372 __ verify_oop(temp1_recv_klass);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
373 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
374 if (VerifyMethodHandles && iid != vmIntrinsics::_linkToInterface) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
375 Label L_ok;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
376 Register temp2_defc = temp2;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
377 __ load_heap_oop(temp2_defc, member_clazz);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
378 load_klass_from_Class(_masm, temp2_defc);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
379 __ verify_oop(temp2_defc);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
380 __ check_klass_subtype(temp1_recv_klass, temp2_defc, temp3, L_ok);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
381 // If we get here, the type check failed!
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
382 __ STOP("receiver class disagrees with MemberName.clazz");
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
383 __ bind(L_ok);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
384 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
385 BLOCK_COMMENT("} check_receiver");
3363
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
386 }
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
387 if (iid == vmIntrinsics::_linkToSpecial ||
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
388 iid == vmIntrinsics::_linkToStatic) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
389 DEBUG_ONLY(temp1_recv_klass = noreg); // these guys didn't load the recv_klass
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
390 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
391
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
392 // Live registers at this point:
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
393 // member_reg - MemberName that was the trailing argument
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
394 // temp1_recv_klass - klass of stacked receiver, if needed
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
395 // rsi/r13 - interpreter linkage (if interpreted)
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
396 // rcx, rdx, rsi, rdi, r8, r8 - compiler arguments (if compiled)
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
397
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
398 bool method_is_live = false;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
399 switch (iid) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
400 case vmIntrinsics::_linkToSpecial:
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
401 if (VerifyMethodHandles) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
402 verify_ref_kind(_masm, JVM_REF_invokeSpecial, member_reg, temp3);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
403 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
404 __ load_heap_oop(rbx_method, member_vmtarget);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
405 method_is_live = true;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
406 break;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
407
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
408 case vmIntrinsics::_linkToStatic:
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
409 if (VerifyMethodHandles) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
410 verify_ref_kind(_masm, JVM_REF_invokeStatic, member_reg, temp3);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
411 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
412 __ load_heap_oop(rbx_method, member_vmtarget);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
413 method_is_live = true;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
414 break;
3363
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
415
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
416 case vmIntrinsics::_linkToVirtual:
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
417 {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
418 // same as TemplateTable::invokevirtual,
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
419 // minus the CP setup and profiling:
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
420
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
421 if (VerifyMethodHandles) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
422 verify_ref_kind(_masm, JVM_REF_invokeVirtual, member_reg, temp3);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
423 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
424
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
425 // pick out the vtable index from the MemberName, and then we can discard it:
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
426 Register temp2_index = temp2;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
427 __ movptr(temp2_index, member_vmindex);
3363
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
428
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
429 if (VerifyMethodHandles) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
430 Label L_index_ok;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
431 __ cmpl(temp2_index, 0);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
432 __ jcc(Assembler::greaterEqual, L_index_ok);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
433 __ STOP("no virtual index");
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
434 __ BIND(L_index_ok);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
435 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
436
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
437 // Note: The verifier invariants allow us to ignore MemberName.clazz and vmtarget
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
438 // at this point. And VerifyMethodHandles has already checked clazz, if needed.
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
439
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
440 // get target methodOop & entry point
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
441 __ lookup_virtual_method(temp1_recv_klass, temp2_index, rbx_method);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
442 method_is_live = true;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
443 break;
3363
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
444 }
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
445
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
446 case vmIntrinsics::_linkToInterface:
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
447 {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
448 // same as TemplateTable::invokeinterface
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
449 // (minus the CP setup and profiling, with different argument motion)
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
450 if (VerifyMethodHandles) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
451 verify_ref_kind(_masm, JVM_REF_invokeInterface, member_reg, temp3);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
452 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
453
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
454 Register temp3_intf = temp3;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
455 __ load_heap_oop(temp3_intf, member_clazz);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
456 load_klass_from_Class(_masm, temp3_intf);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
457 __ verify_oop(temp3_intf);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
458
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
459 Register rbx_index = rbx_method;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
460 __ movptr(rbx_index, member_vmindex);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
461 if (VerifyMethodHandles) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
462 Label L;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
463 __ cmpl(rbx_index, 0);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
464 __ jcc(Assembler::greaterEqual, L);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
465 __ STOP("invalid vtable index for MH.invokeInterface");
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
466 __ bind(L);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
467 }
3363
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
468
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
469 // given intf, index, and recv klass, dispatch to the implementation method
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
470 Label L_no_such_interface;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
471 __ lookup_interface_method(temp1_recv_klass, temp3_intf,
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
472 // note: next two args must be the same:
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
473 rbx_index, rbx_method,
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
474 temp2,
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
475 L_no_such_interface);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
476
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
477 __ verify_oop(rbx_method);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
478 jump_from_method_handle(_masm, rbx_method, temp2, for_compiler_entry);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
479 __ hlt();
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
480
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
481 __ bind(L_no_such_interface);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
482 __ jump(RuntimeAddress(StubRoutines::throw_IncompatibleClassChangeError_entry()));
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
483 break;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
484 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
485
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
486 default:
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
487 fatal(err_msg("unexpected intrinsic %d: %s", iid, vmIntrinsics::name_at(iid)));
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
488 break;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
489 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
490
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
491 if (method_is_live) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
492 // live at this point: rbx_method, rsi/r13 (if interpreted)
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
493
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
494 // After figuring out which concrete method to call, jump into it.
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
495 // Note that this works in the interpreter with no data motion.
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
496 // But the compiled version will require that rcx_recv be shifted out.
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
497 __ verify_oop(rbx_method);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
498 jump_from_method_handle(_masm, rbx_method, temp1, for_compiler_entry);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
499 }
3363
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
500 }
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
501 }
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
502
4824
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
503 #ifndef PRODUCT
710
e5b0439ef4ae 6655638: dynamic languages need method handles
jrose
parents:
diff changeset
504 void trace_method_handle_stub(const char* adaptername,
3363
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
505 oop mh,
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
506 intptr_t* saved_regs,
4939
45a1bf98f1bb 7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
twisti
parents: 4874
diff changeset
507 intptr_t* entry_sp) {
710
e5b0439ef4ae 6655638: dynamic languages need method handles
jrose
parents:
diff changeset
508 // called as a leaf from native code: do not block the JVM!
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
509 bool has_mh = (strstr(adaptername, "/static") == NULL &&
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
510 strstr(adaptername, "linkTo") == NULL); // static linkers don't have MH
4939
45a1bf98f1bb 7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
twisti
parents: 4874
diff changeset
511 const char* mh_reg_name = has_mh ? "rcx_mh" : "rcx";
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
512 tty->print_cr("MH %s %s="PTR_FORMAT" sp="PTR_FORMAT,
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
513 adaptername, mh_reg_name,
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
514 mh, entry_sp);
4824
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
515
1793
d257356e35f0 6939224: MethodHandle.invokeGeneric needs to perform the correct set of conversions
jrose
parents: 1552
diff changeset
516 if (Verbose) {
4939
45a1bf98f1bb 7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
twisti
parents: 4874
diff changeset
517 tty->print_cr("Registers:");
45a1bf98f1bb 7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
twisti
parents: 4874
diff changeset
518 const int saved_regs_count = RegisterImpl::number_of_registers;
45a1bf98f1bb 7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
twisti
parents: 4874
diff changeset
519 for (int i = 0; i < saved_regs_count; i++) {
45a1bf98f1bb 7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
twisti
parents: 4874
diff changeset
520 Register r = as_Register(i);
45a1bf98f1bb 7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
twisti
parents: 4874
diff changeset
521 // The registers are stored in reverse order on the stack (by pusha).
45a1bf98f1bb 7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
twisti
parents: 4874
diff changeset
522 tty->print("%3s=" PTR_FORMAT, r->name(), saved_regs[((saved_regs_count - 1) - i)]);
45a1bf98f1bb 7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
twisti
parents: 4874
diff changeset
523 if ((i + 1) % 4 == 0) {
3363
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
524 tty->cr();
4939
45a1bf98f1bb 7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
twisti
parents: 4874
diff changeset
525 } else {
45a1bf98f1bb 7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
twisti
parents: 4874
diff changeset
526 tty->print(", ");
3363
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
527 }
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
528 }
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
529 tty->cr();
4824
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
530
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
531 {
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
532 // dumping last frame with frame::describe
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
533
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
534 JavaThread* p = JavaThread::active();
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
535
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
536 ResourceMark rm;
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
537 PRESERVE_EXCEPTION_MARK; // may not be needed by safer and unexpensive here
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
538 FrameValues values;
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
539
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
540 // Note: We want to allow trace_method_handle from any call site.
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
541 // While trace_method_handle creates a frame, it may be entered
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
542 // without a PC on the stack top (e.g. not just after a call).
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
543 // Walking that frame could lead to failures due to that invalid PC.
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
544 // => carefully detect that frame when doing the stack walking
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
545
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
546 // Current C frame
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
547 frame cur_frame = os::current_frame();
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
548
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
549 // Robust search of trace_calling_frame (independant of inlining).
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
550 // Assumes saved_regs comes from a pusha in the trace_calling_frame.
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
551 assert(cur_frame.sp() < saved_regs, "registers not saved on stack ?");
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
552 frame trace_calling_frame = os::get_sender_for_C_frame(&cur_frame);
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
553 while (trace_calling_frame.fp() < saved_regs) {
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
554 trace_calling_frame = os::get_sender_for_C_frame(&trace_calling_frame);
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
555 }
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
556
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
557 // safely create a frame and call frame::describe
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
558 intptr_t *dump_sp = trace_calling_frame.sender_sp();
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
559 intptr_t *dump_fp = trace_calling_frame.link();
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
560
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
561 bool walkable = has_mh; // whether the traced frame shoud be walkable
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
562
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
563 if (walkable) {
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
564 // The previous definition of walkable may have to be refined
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
565 // if new call sites cause the next frame constructor to start
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
566 // failing. Alternatively, frame constructors could be
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
567 // modified to support the current or future non walkable
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
568 // frames (but this is more intrusive and is not considered as
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
569 // part of this RFE, which will instead use a simpler output).
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
570 frame dump_frame = frame(dump_sp, dump_fp);
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
571 dump_frame.describe(values, 1);
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
572 } else {
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
573 // Stack may not be walkable (invalid PC above FP):
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
574 // Add descriptions without building a Java frame to avoid issues
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
575 values.describe(-1, dump_fp, "fp for #1 <not parsed, cannot trust pc>");
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
576 values.describe(-1, dump_sp, "sp for #1");
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
577 }
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
578 values.describe(-1, entry_sp, "raw top of stack");
4824
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
579
4939
45a1bf98f1bb 7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
twisti
parents: 4874
diff changeset
580 tty->print_cr("Stack layout:");
4824
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
581 values.print(p);
3363
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
582 }
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
583 if (has_mh && mh->is_oop()) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
584 mh->print();
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
585 if (java_lang_invoke_MethodHandle::is_instance(mh)) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
diff changeset
586 if (java_lang_invoke_MethodHandle::form_offset_in_bytes() != 0)
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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587 java_lang_invoke_MethodHandle::form(mh)->print();
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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588 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 4939
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589 }
1793
d257356e35f0 6939224: MethodHandle.invokeGeneric needs to perform the correct set of conversions
jrose
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590 }
d257356e35f0 6939224: MethodHandle.invokeGeneric needs to perform the correct set of conversions
jrose
parents: 1552
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591 }
3363
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
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592
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
593 // The stub wraps the arguments in a struct on the stack to avoid
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
594 // dealing with the different calling conventions for passing 6
167b70ff3abc 6939861: JVM should handle more conversion operations
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parents: 3336
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595 // arguments.
167b70ff3abc 6939861: JVM should handle more conversion operations
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596 struct MethodHandleStubArguments {
167b70ff3abc 6939861: JVM should handle more conversion operations
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597 const char* adaptername;
167b70ff3abc 6939861: JVM should handle more conversion operations
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598 oopDesc* mh;
167b70ff3abc 6939861: JVM should handle more conversion operations
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parents: 3336
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599 intptr_t* saved_regs;
167b70ff3abc 6939861: JVM should handle more conversion operations
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parents: 3336
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600 intptr_t* entry_sp;
167b70ff3abc 6939861: JVM should handle more conversion operations
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601 };
167b70ff3abc 6939861: JVM should handle more conversion operations
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parents: 3336
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602 void trace_method_handle_stub_wrapper(MethodHandleStubArguments* args) {
167b70ff3abc 6939861: JVM should handle more conversion operations
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parents: 3336
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603 trace_method_handle_stub(args->adaptername,
167b70ff3abc 6939861: JVM should handle more conversion operations
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parents: 3336
diff changeset
604 args->mh,
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
605 args->saved_regs,
4939
45a1bf98f1bb 7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
twisti
parents: 4874
diff changeset
606 args->entry_sp);
3363
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
607 }
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
608
1793
d257356e35f0 6939224: MethodHandle.invokeGeneric needs to perform the correct set of conversions
jrose
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diff changeset
609 void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) {
d257356e35f0 6939224: MethodHandle.invokeGeneric needs to perform the correct set of conversions
jrose
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diff changeset
610 if (!TraceMethodHandles) return;
d257356e35f0 6939224: MethodHandle.invokeGeneric needs to perform the correct set of conversions
jrose
parents: 1552
diff changeset
611 BLOCK_COMMENT("trace_method_handle {");
4824
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
612 __ enter();
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
613 __ andptr(rsp, -16); // align stack if needed for FPU state
1793
d257356e35f0 6939224: MethodHandle.invokeGeneric needs to perform the correct set of conversions
jrose
parents: 1552
diff changeset
614 __ pusha();
4824
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
615 __ mov(rbx, rsp); // for retreiving saved_regs
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
616 // Note: saved_regs must be in the entered frame for the
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
617 // robust stack walking implemented in trace_method_handle_stub.
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
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diff changeset
618
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
619 // save FP result, valid at some call sites (adapter_opt_return_float, ...)
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
620 __ increment(rsp, -2 * wordSize);
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
621 if (UseSSE >= 2) {
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
622 __ movdbl(Address(rsp, 0), xmm0);
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
623 } else if (UseSSE == 1) {
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
624 __ movflt(Address(rsp, 0), xmm0);
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
625 } else {
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
626 __ fst_d(Address(rsp, 0));
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
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diff changeset
627 }
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
628
4939
45a1bf98f1bb 7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
twisti
parents: 4874
diff changeset
629 // Incoming state:
3336
2e038ad0c1d0 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 2357
diff changeset
630 // rcx: method handle
4939
45a1bf98f1bb 7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
twisti
parents: 4874
diff changeset
631 //
45a1bf98f1bb 7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
twisti
parents: 4874
diff changeset
632 // To avoid calling convention issues, build a record on the stack
45a1bf98f1bb 7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
twisti
parents: 4874
diff changeset
633 // and pass the pointer to that instead.
4824
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
634 __ push(rbp); // entry_sp (with extra align space)
3363
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
635 __ push(rbx); // pusha saved_regs
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
636 __ push(rcx); // mh
4824
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
637 __ push(rcx); // slot for adaptername
3363
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
638 __ movptr(Address(rsp, 0), (intptr_t) adaptername);
167b70ff3abc 6939861: JVM should handle more conversion operations
never
parents: 3336
diff changeset
639 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub_wrapper), rsp);
4939
45a1bf98f1bb 7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
twisti
parents: 4874
diff changeset
640 __ increment(rsp, sizeof(MethodHandleStubArguments));
4824
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
641
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
642 if (UseSSE >= 2) {
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
643 __ movdbl(xmm0, Address(rsp, 0));
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
644 } else if (UseSSE == 1) {
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
645 __ movflt(xmm0, Address(rsp, 0));
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
646 } else {
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
647 __ fld_d(Address(rsp, 0));
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
648 }
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
649 __ increment(rsp, 2 * wordSize);
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
650
1793
d257356e35f0 6939224: MethodHandle.invokeGeneric needs to perform the correct set of conversions
jrose
parents: 1552
diff changeset
651 __ popa();
4824
5dbed2f542ff 7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents: 4818
diff changeset
652 __ leave();
1793
d257356e35f0 6939224: MethodHandle.invokeGeneric needs to perform the correct set of conversions
jrose
parents: 1552
diff changeset
653 BLOCK_COMMENT("} trace_method_handle");
710
e5b0439ef4ae 6655638: dynamic languages need method handles
jrose
parents:
diff changeset
654 }
e5b0439ef4ae 6655638: dynamic languages need method handles
jrose
parents:
diff changeset
655 #endif //PRODUCT
e5b0439ef4ae 6655638: dynamic languages need method handles
jrose
parents:
diff changeset
656