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1 /* |
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2 * Copyright (c) 1998, 2017, 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 "asm/macroAssembler.inline.hpp" |
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27 #include "interpreter/interpreter.hpp" |
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28 #include "interpreter/interpreterRuntime.hpp" |
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29 #include "memory/allocation.inline.hpp" |
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30 #include "memory/universe.inline.hpp" |
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31 #include "oops/method.hpp" |
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32 #include "oops/oop.inline.hpp" |
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33 #include "runtime/handles.inline.hpp" |
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34 #include "runtime/icache.hpp" |
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35 #include "runtime/interfaceSupport.hpp" |
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36 #include "runtime/signature.hpp" |
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37 |
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38 |
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39 #define __ _masm-> |
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40 |
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41 |
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42 // Implementation of SignatureHandlerGenerator |
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43 |
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44 void InterpreterRuntime::SignatureHandlerGenerator::pass_word(int size_of_arg, int offset_in_arg) { |
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45 Argument jni_arg(jni_offset() + offset_in_arg, false); |
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46 Register Rtmp = O0; |
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47 __ ld(Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp); |
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48 |
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49 __ store_argument(Rtmp, jni_arg); |
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50 } |
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51 |
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52 void InterpreterRuntime::SignatureHandlerGenerator::pass_long() { |
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53 Argument jni_arg(jni_offset(), false); |
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54 Register Rtmp = O0; |
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55 |
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56 __ ldx(Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp); |
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57 __ store_long_argument(Rtmp, jni_arg); |
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58 } |
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59 |
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60 |
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61 void InterpreterRuntime::SignatureHandlerGenerator::pass_float() { |
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62 Argument jni_arg(jni_offset(), false); |
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63 FloatRegister Rtmp = F0; |
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64 __ ldf(FloatRegisterImpl::S, Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp); |
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65 __ store_float_argument(Rtmp, jni_arg); |
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66 } |
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67 |
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68 |
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69 void InterpreterRuntime::SignatureHandlerGenerator::pass_double() { |
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70 Argument jni_arg(jni_offset(), false); |
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71 FloatRegister Rtmp = F0; |
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72 __ ldf(FloatRegisterImpl::D, Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp); |
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73 __ store_double_argument(Rtmp, jni_arg); |
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74 } |
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75 |
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76 void InterpreterRuntime::SignatureHandlerGenerator::pass_object() { |
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77 Argument jni_arg(jni_offset(), false); |
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78 Argument java_arg( offset(), true); |
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79 Register Rtmp1 = O0; |
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80 Register Rtmp2 = jni_arg.is_register() ? jni_arg.as_register() : O0; |
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81 Register Rtmp3 = G3_scratch; |
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82 |
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83 // the handle for a receiver will never be null |
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84 bool do_NULL_check = offset() != 0 || is_static(); |
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85 |
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86 Address h_arg = Address(Llocals, Interpreter::local_offset_in_bytes(offset())); |
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87 __ ld_ptr(h_arg, Rtmp1); |
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88 if (!do_NULL_check) { |
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89 __ add(h_arg.base(), h_arg.disp(), Rtmp2); |
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90 } else { |
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91 if (Rtmp1 == Rtmp2) |
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92 __ tst(Rtmp1); |
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93 else __ addcc(G0, Rtmp1, Rtmp2); // optimize mov/test pair |
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94 Label L; |
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95 __ brx(Assembler::notZero, true, Assembler::pt, L); |
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96 __ delayed()->add(h_arg.base(), h_arg.disp(), Rtmp2); |
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97 __ bind(L); |
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98 } |
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99 __ store_ptr_argument(Rtmp2, jni_arg); // this is often a no-op |
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100 } |
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101 |
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102 |
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103 void InterpreterRuntime::SignatureHandlerGenerator::generate(uint64_t fingerprint) { |
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104 |
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105 // generate code to handle arguments |
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106 iterate(fingerprint); |
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107 |
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108 // return result handler |
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109 AddressLiteral result_handler(Interpreter::result_handler(method()->result_type())); |
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110 __ sethi(result_handler, Lscratch); |
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111 __ retl(); |
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112 __ delayed()->add(Lscratch, result_handler.low10(), Lscratch); |
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113 |
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114 __ flush(); |
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115 } |
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116 |
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117 |
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118 // Implementation of SignatureHandlerLibrary |
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119 |
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120 void SignatureHandlerLibrary::pd_set_handler(address handler) {} |
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121 |
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122 |
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123 class SlowSignatureHandler: public NativeSignatureIterator { |
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124 private: |
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125 address _from; |
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126 intptr_t* _to; |
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127 intptr_t* _RegArgSignature; // Signature of first Arguments to be passed in Registers |
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128 uint _argcount; |
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129 |
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130 enum { // We need to differenciate float from non floats in reg args |
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131 non_float = 0, |
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132 float_sig = 1, |
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133 double_sig = 2, |
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134 long_sig = 3 |
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135 }; |
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136 |
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137 virtual void pass_int() { |
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138 *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0)); |
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139 _from -= Interpreter::stackElementSize; |
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140 add_signature( non_float ); |
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141 } |
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142 |
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143 virtual void pass_object() { |
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144 // pass address of from |
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145 intptr_t *from_addr = (intptr_t*)(_from + Interpreter::local_offset_in_bytes(0)); |
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146 *_to++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr; |
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147 _from -= Interpreter::stackElementSize; |
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148 add_signature( non_float ); |
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149 } |
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150 |
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151 virtual void pass_float() { |
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152 *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0)); |
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153 _from -= Interpreter::stackElementSize; |
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154 add_signature( float_sig ); |
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155 } |
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156 |
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157 virtual void pass_double() { |
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158 *_to++ = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1)); |
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159 _from -= 2*Interpreter::stackElementSize; |
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160 add_signature( double_sig ); |
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161 } |
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162 |
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163 virtual void pass_long() { |
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164 _to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1)); |
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165 _to += 1; |
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166 _from -= 2*Interpreter::stackElementSize; |
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167 add_signature( long_sig ); |
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168 } |
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169 |
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170 virtual void add_signature( intptr_t sig_type ) { |
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171 if ( _argcount < (sizeof (intptr_t))*4 ) { |
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172 *_RegArgSignature |= (sig_type << (_argcount*2) ); |
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173 _argcount++; |
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174 } |
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175 } |
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176 |
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177 |
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178 public: |
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179 SlowSignatureHandler(const methodHandle& method, address from, intptr_t* to, intptr_t *RegArgSig) : NativeSignatureIterator(method) { |
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180 _from = from; |
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181 _to = to; |
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182 _RegArgSignature = RegArgSig; |
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183 *_RegArgSignature = 0; |
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184 _argcount = method->is_static() ? 2 : 1; |
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185 } |
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186 }; |
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187 |
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188 |
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189 IRT_ENTRY(address, InterpreterRuntime::slow_signature_handler( |
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190 JavaThread* thread, |
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191 Method* method, |
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192 intptr_t* from, |
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193 intptr_t* to )) |
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194 methodHandle m(thread, method); |
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195 assert(m->is_native(), "sanity check"); |
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196 // handle arguments |
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197 // Warning: We use reg arg slot 00 temporarily to return the RegArgSignature |
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198 // back to the code that pops the arguments into the CPU registers |
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199 SlowSignatureHandler(m, (address)from, m->is_static() ? to+2 : to+1, to).iterate((uint64_t)CONST64(-1)); |
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200 // return result handler |
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201 return Interpreter::result_handler(m->result_type()); |
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202 IRT_END |