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1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 #include "precompiled.hpp" |
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26 #include "asm/macroAssembler.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 "interpreter/templateTable.hpp" |
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30 #include "memory/universe.inline.hpp" |
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31 #include "oops/methodData.hpp" |
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32 #include "oops/objArrayKlass.hpp" |
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33 #include "oops/oop.inline.hpp" |
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34 #include "prims/methodHandles.hpp" |
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35 #include "runtime/sharedRuntime.hpp" |
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36 #include "runtime/stubRoutines.hpp" |
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37 #include "runtime/synchronizer.hpp" |
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38 #include "utilities/macros.hpp" |
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39 |
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40 #ifndef CC_INTERP |
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41 #define __ _masm-> |
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42 |
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43 //---------------------------------------------------------------------------------------------------- |
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44 // Platform-dependent initialization |
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45 |
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46 void TemplateTable::pd_initialize() { |
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47 // No i486 specific initialization |
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48 } |
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49 |
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50 //---------------------------------------------------------------------------------------------------- |
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51 // Address computation |
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52 |
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53 // local variables |
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54 static inline Address iaddress(int n) { |
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55 return Address(rdi, Interpreter::local_offset_in_bytes(n)); |
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56 } |
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57 |
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58 static inline Address laddress(int n) { return iaddress(n + 1); } |
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59 static inline Address haddress(int n) { return iaddress(n + 0); } |
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60 static inline Address faddress(int n) { return iaddress(n); } |
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61 static inline Address daddress(int n) { return laddress(n); } |
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62 static inline Address aaddress(int n) { return iaddress(n); } |
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63 |
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64 static inline Address iaddress(Register r) { |
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65 return Address(rdi, r, Interpreter::stackElementScale()); |
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66 } |
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67 static inline Address laddress(Register r) { |
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68 return Address(rdi, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(1)); |
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69 } |
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70 static inline Address haddress(Register r) { |
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71 return Address(rdi, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(0)); |
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72 } |
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73 |
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74 static inline Address faddress(Register r) { return iaddress(r); } |
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75 static inline Address daddress(Register r) { return laddress(r); } |
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76 static inline Address aaddress(Register r) { return iaddress(r); } |
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77 |
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78 // expression stack |
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79 // (Note: Must not use symmetric equivalents at_rsp_m1/2 since they store |
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80 // data beyond the rsp which is potentially unsafe in an MT environment; |
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81 // an interrupt may overwrite that data.) |
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82 static inline Address at_rsp () { |
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83 return Address(rsp, 0); |
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84 } |
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85 |
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86 // At top of Java expression stack which may be different than rsp(). It |
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87 // isn't for category 1 objects. |
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88 static inline Address at_tos () { |
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89 Address tos = Address(rsp, Interpreter::expr_offset_in_bytes(0)); |
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90 return tos; |
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91 } |
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92 |
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93 static inline Address at_tos_p1() { |
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94 return Address(rsp, Interpreter::expr_offset_in_bytes(1)); |
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95 } |
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96 |
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97 static inline Address at_tos_p2() { |
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98 return Address(rsp, Interpreter::expr_offset_in_bytes(2)); |
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99 } |
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100 |
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101 // Condition conversion |
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102 static Assembler::Condition j_not(TemplateTable::Condition cc) { |
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103 switch (cc) { |
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104 case TemplateTable::equal : return Assembler::notEqual; |
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105 case TemplateTable::not_equal : return Assembler::equal; |
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106 case TemplateTable::less : return Assembler::greaterEqual; |
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107 case TemplateTable::less_equal : return Assembler::greater; |
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108 case TemplateTable::greater : return Assembler::lessEqual; |
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109 case TemplateTable::greater_equal: return Assembler::less; |
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110 } |
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111 ShouldNotReachHere(); |
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112 return Assembler::zero; |
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113 } |
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114 |
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115 |
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116 //---------------------------------------------------------------------------------------------------- |
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117 // Miscelaneous helper routines |
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118 |
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119 // Store an oop (or NULL) at the address described by obj. |
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120 // If val == noreg this means store a NULL |
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121 |
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122 static void do_oop_store(InterpreterMacroAssembler* _masm, |
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123 Address obj, |
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124 Register val, |
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125 BarrierSet::Name barrier, |
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126 bool precise) { |
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127 assert(val == noreg || val == rax, "parameter is just for looks"); |
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128 switch (barrier) { |
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129 #if INCLUDE_ALL_GCS |
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130 case BarrierSet::G1SATBCT: |
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131 case BarrierSet::G1SATBCTLogging: |
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132 { |
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133 // flatten object address if needed |
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134 // We do it regardless of precise because we need the registers |
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135 if (obj.index() == noreg && obj.disp() == 0) { |
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136 if (obj.base() != rdx) { |
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137 __ movl(rdx, obj.base()); |
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138 } |
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139 } else { |
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140 __ leal(rdx, obj); |
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141 } |
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142 __ get_thread(rcx); |
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143 __ save_bcp(); |
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144 __ g1_write_barrier_pre(rdx /* obj */, |
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145 rbx /* pre_val */, |
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146 rcx /* thread */, |
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147 rsi /* tmp */, |
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148 val != noreg /* tosca_live */, |
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149 false /* expand_call */); |
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150 |
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151 // Do the actual store |
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152 // noreg means NULL |
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153 if (val == noreg) { |
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154 __ movptr(Address(rdx, 0), NULL_WORD); |
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155 // No post barrier for NULL |
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156 } else { |
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157 __ movl(Address(rdx, 0), val); |
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158 __ g1_write_barrier_post(rdx /* store_adr */, |
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159 val /* new_val */, |
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160 rcx /* thread */, |
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161 rbx /* tmp */, |
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162 rsi /* tmp2 */); |
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163 } |
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164 __ restore_bcp(); |
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165 |
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166 } |
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167 break; |
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168 #endif // INCLUDE_ALL_GCS |
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169 case BarrierSet::CardTableModRef: |
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170 case BarrierSet::CardTableExtension: |
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171 { |
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172 if (val == noreg) { |
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173 __ movptr(obj, NULL_WORD); |
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174 } else { |
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175 __ movl(obj, val); |
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176 // flatten object address if needed |
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177 if (!precise || (obj.index() == noreg && obj.disp() == 0)) { |
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178 __ store_check(obj.base()); |
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179 } else { |
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180 __ leal(rdx, obj); |
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181 __ store_check(rdx); |
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182 } |
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183 } |
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184 } |
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185 break; |
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186 case BarrierSet::ModRef: |
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187 case BarrierSet::Other: |
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188 if (val == noreg) { |
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189 __ movptr(obj, NULL_WORD); |
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190 } else { |
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191 __ movl(obj, val); |
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192 } |
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193 break; |
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194 default : |
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195 ShouldNotReachHere(); |
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196 |
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197 } |
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198 } |
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199 |
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200 Address TemplateTable::at_bcp(int offset) { |
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201 assert(_desc->uses_bcp(), "inconsistent uses_bcp information"); |
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202 return Address(rsi, offset); |
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203 } |
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204 |
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205 |
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206 void TemplateTable::patch_bytecode(Bytecodes::Code bc, Register bc_reg, |
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207 Register temp_reg, bool load_bc_into_bc_reg/*=true*/, |
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208 int byte_no) { |
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209 if (!RewriteBytecodes) return; |
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210 Label L_patch_done; |
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211 |
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212 switch (bc) { |
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213 case Bytecodes::_fast_aputfield: |
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214 case Bytecodes::_fast_bputfield: |
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215 case Bytecodes::_fast_cputfield: |
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216 case Bytecodes::_fast_dputfield: |
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217 case Bytecodes::_fast_fputfield: |
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218 case Bytecodes::_fast_iputfield: |
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219 case Bytecodes::_fast_lputfield: |
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220 case Bytecodes::_fast_sputfield: |
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221 { |
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222 // We skip bytecode quickening for putfield instructions when |
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223 // the put_code written to the constant pool cache is zero. |
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224 // This is required so that every execution of this instruction |
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225 // calls out to InterpreterRuntime::resolve_get_put to do |
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226 // additional, required work. |
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227 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range"); |
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228 assert(load_bc_into_bc_reg, "we use bc_reg as temp"); |
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229 __ get_cache_and_index_and_bytecode_at_bcp(bc_reg, temp_reg, temp_reg, byte_no, 1); |
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230 __ movl(bc_reg, bc); |
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231 __ cmpl(temp_reg, (int) 0); |
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232 __ jcc(Assembler::zero, L_patch_done); // don't patch |
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233 } |
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234 break; |
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235 default: |
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236 assert(byte_no == -1, "sanity"); |
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237 // the pair bytecodes have already done the load. |
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238 if (load_bc_into_bc_reg) { |
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239 __ movl(bc_reg, bc); |
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240 } |
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241 } |
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242 |
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243 if (JvmtiExport::can_post_breakpoint()) { |
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244 Label L_fast_patch; |
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245 // if a breakpoint is present we can't rewrite the stream directly |
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246 __ movzbl(temp_reg, at_bcp(0)); |
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247 __ cmpl(temp_reg, Bytecodes::_breakpoint); |
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248 __ jcc(Assembler::notEqual, L_fast_patch); |
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249 __ get_method(temp_reg); |
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250 // Let breakpoint table handling rewrite to quicker bytecode |
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251 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), temp_reg, rsi, bc_reg); |
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252 #ifndef ASSERT |
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253 __ jmpb(L_patch_done); |
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254 #else |
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255 __ jmp(L_patch_done); |
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256 #endif |
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257 __ bind(L_fast_patch); |
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258 } |
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259 |
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260 #ifdef ASSERT |
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261 Label L_okay; |
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262 __ load_unsigned_byte(temp_reg, at_bcp(0)); |
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263 __ cmpl(temp_reg, (int)Bytecodes::java_code(bc)); |
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264 __ jccb(Assembler::equal, L_okay); |
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265 __ cmpl(temp_reg, bc_reg); |
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266 __ jcc(Assembler::equal, L_okay); |
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267 __ stop("patching the wrong bytecode"); |
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268 __ bind(L_okay); |
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269 #endif |
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270 |
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271 // patch bytecode |
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272 __ movb(at_bcp(0), bc_reg); |
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273 __ bind(L_patch_done); |
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274 } |
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275 |
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276 //---------------------------------------------------------------------------------------------------- |
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277 // Individual instructions |
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278 |
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279 void TemplateTable::nop() { |
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280 transition(vtos, vtos); |
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281 // nothing to do |
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282 } |
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283 |
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284 void TemplateTable::shouldnotreachhere() { |
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285 transition(vtos, vtos); |
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286 __ stop("shouldnotreachhere bytecode"); |
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287 } |
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288 |
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289 |
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290 |
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291 void TemplateTable::aconst_null() { |
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292 transition(vtos, atos); |
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293 __ xorptr(rax, rax); |
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294 } |
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295 |
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296 |
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297 void TemplateTable::iconst(int value) { |
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298 transition(vtos, itos); |
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299 if (value == 0) { |
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300 __ xorptr(rax, rax); |
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301 } else { |
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302 __ movptr(rax, value); |
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303 } |
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304 } |
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305 |
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306 |
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307 void TemplateTable::lconst(int value) { |
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308 transition(vtos, ltos); |
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309 if (value == 0) { |
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310 __ xorptr(rax, rax); |
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311 } else { |
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312 __ movptr(rax, value); |
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313 } |
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314 assert(value >= 0, "check this code"); |
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315 __ xorptr(rdx, rdx); |
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316 } |
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317 |
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318 |
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319 void TemplateTable::fconst(int value) { |
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320 transition(vtos, ftos); |
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321 if (value == 0) { __ fldz(); |
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322 } else if (value == 1) { __ fld1(); |
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323 } else if (value == 2) { __ fld1(); __ fld1(); __ faddp(); // should do a better solution here |
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324 } else { ShouldNotReachHere(); |
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325 } |
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326 } |
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327 |
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328 |
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329 void TemplateTable::dconst(int value) { |
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330 transition(vtos, dtos); |
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331 if (value == 0) { __ fldz(); |
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332 } else if (value == 1) { __ fld1(); |
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333 } else { ShouldNotReachHere(); |
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334 } |
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335 } |
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336 |
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337 |
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338 void TemplateTable::bipush() { |
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339 transition(vtos, itos); |
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340 __ load_signed_byte(rax, at_bcp(1)); |
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341 } |
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342 |
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343 |
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344 void TemplateTable::sipush() { |
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345 transition(vtos, itos); |
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346 __ load_unsigned_short(rax, at_bcp(1)); |
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347 __ bswapl(rax); |
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348 __ sarl(rax, 16); |
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349 } |
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350 |
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351 void TemplateTable::ldc(bool wide) { |
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352 transition(vtos, vtos); |
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353 Label call_ldc, notFloat, notClass, Done; |
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354 |
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355 if (wide) { |
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356 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); |
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357 } else { |
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358 __ load_unsigned_byte(rbx, at_bcp(1)); |
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359 } |
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360 __ get_cpool_and_tags(rcx, rax); |
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361 const int base_offset = ConstantPool::header_size() * wordSize; |
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362 const int tags_offset = Array<u1>::base_offset_in_bytes(); |
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363 |
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364 // get type |
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365 __ xorptr(rdx, rdx); |
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366 __ movb(rdx, Address(rax, rbx, Address::times_1, tags_offset)); |
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367 |
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368 // unresolved class - get the resolved class |
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369 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClass); |
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370 __ jccb(Assembler::equal, call_ldc); |
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371 |
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372 // unresolved class in error (resolution failed) - call into runtime |
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373 // so that the same error from first resolution attempt is thrown. |
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374 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClassInError); |
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375 __ jccb(Assembler::equal, call_ldc); |
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376 |
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377 // resolved class - need to call vm to get java mirror of the class |
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378 __ cmpl(rdx, JVM_CONSTANT_Class); |
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379 __ jcc(Assembler::notEqual, notClass); |
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380 |
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381 __ bind(call_ldc); |
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382 __ movl(rcx, wide); |
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383 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), rcx); |
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384 __ push(atos); |
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385 __ jmp(Done); |
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386 |
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387 __ bind(notClass); |
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388 __ cmpl(rdx, JVM_CONSTANT_Float); |
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389 __ jccb(Assembler::notEqual, notFloat); |
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390 // ftos |
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391 __ fld_s( Address(rcx, rbx, Address::times_ptr, base_offset)); |
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392 __ push(ftos); |
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393 __ jmp(Done); |
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394 |
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395 __ bind(notFloat); |
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396 #ifdef ASSERT |
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397 { Label L; |
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398 __ cmpl(rdx, JVM_CONSTANT_Integer); |
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399 __ jcc(Assembler::equal, L); |
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400 // String and Object are rewritten to fast_aldc |
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401 __ stop("unexpected tag type in ldc"); |
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402 __ bind(L); |
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403 } |
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404 #endif |
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405 // itos JVM_CONSTANT_Integer only |
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406 __ movl(rax, Address(rcx, rbx, Address::times_ptr, base_offset)); |
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407 __ push(itos); |
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408 __ bind(Done); |
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409 } |
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410 |
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411 // Fast path for caching oop constants. |
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412 void TemplateTable::fast_aldc(bool wide) { |
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413 transition(vtos, atos); |
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414 |
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415 Register result = rax; |
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416 Register tmp = rdx; |
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417 int index_size = wide ? sizeof(u2) : sizeof(u1); |
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418 |
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419 Label resolved; |
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420 |
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421 // We are resolved if the resolved reference cache entry contains a |
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422 // non-null object (String, MethodType, etc.) |
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423 assert_different_registers(result, tmp); |
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424 __ get_cache_index_at_bcp(tmp, 1, index_size); |
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425 __ load_resolved_reference_at_index(result, tmp); |
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426 __ testl(result, result); |
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427 __ jcc(Assembler::notZero, resolved); |
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428 |
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429 address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); |
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430 |
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431 // first time invocation - must resolve first |
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432 __ movl(tmp, (int)bytecode()); |
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433 __ call_VM(result, entry, tmp); |
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434 |
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435 __ bind(resolved); |
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436 |
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437 if (VerifyOops) { |
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438 __ verify_oop(result); |
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439 } |
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440 } |
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441 |
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442 void TemplateTable::ldc2_w() { |
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443 transition(vtos, vtos); |
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444 Label Long, Done; |
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445 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); |
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446 |
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447 __ get_cpool_and_tags(rcx, rax); |
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448 const int base_offset = ConstantPool::header_size() * wordSize; |
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449 const int tags_offset = Array<u1>::base_offset_in_bytes(); |
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450 |
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451 // get type |
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452 __ cmpb(Address(rax, rbx, Address::times_1, tags_offset), JVM_CONSTANT_Double); |
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453 __ jccb(Assembler::notEqual, Long); |
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454 // dtos |
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455 __ fld_d( Address(rcx, rbx, Address::times_ptr, base_offset)); |
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456 __ push(dtos); |
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457 __ jmpb(Done); |
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458 |
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459 __ bind(Long); |
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460 // ltos |
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461 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, base_offset + 0 * wordSize)); |
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462 NOT_LP64(__ movptr(rdx, Address(rcx, rbx, Address::times_ptr, base_offset + 1 * wordSize))); |
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463 |
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464 __ push(ltos); |
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465 |
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466 __ bind(Done); |
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467 } |
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468 |
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469 |
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470 void TemplateTable::locals_index(Register reg, int offset) { |
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471 __ load_unsigned_byte(reg, at_bcp(offset)); |
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472 __ negptr(reg); |
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473 } |
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474 |
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475 |
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476 void TemplateTable::iload() { |
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477 transition(vtos, itos); |
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478 if (RewriteFrequentPairs) { |
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479 Label rewrite, done; |
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480 |
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481 // get next byte |
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482 __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_iload))); |
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483 // if _iload, wait to rewrite to iload2. We only want to rewrite the |
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484 // last two iloads in a pair. Comparing against fast_iload means that |
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485 // the next bytecode is neither an iload or a caload, and therefore |
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486 // an iload pair. |
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487 __ cmpl(rbx, Bytecodes::_iload); |
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488 __ jcc(Assembler::equal, done); |
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489 |
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490 __ cmpl(rbx, Bytecodes::_fast_iload); |
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491 __ movl(rcx, Bytecodes::_fast_iload2); |
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492 __ jccb(Assembler::equal, rewrite); |
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493 |
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494 // if _caload, rewrite to fast_icaload |
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495 __ cmpl(rbx, Bytecodes::_caload); |
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496 __ movl(rcx, Bytecodes::_fast_icaload); |
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497 __ jccb(Assembler::equal, rewrite); |
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498 |
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499 // rewrite so iload doesn't check again. |
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500 __ movl(rcx, Bytecodes::_fast_iload); |
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501 |
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502 // rewrite |
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503 // rcx: fast bytecode |
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504 __ bind(rewrite); |
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505 patch_bytecode(Bytecodes::_iload, rcx, rbx, false); |
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506 __ bind(done); |
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507 } |
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508 |
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509 // Get the local value into tos |
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510 locals_index(rbx); |
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511 __ movl(rax, iaddress(rbx)); |
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512 } |
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513 |
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514 |
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515 void TemplateTable::fast_iload2() { |
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516 transition(vtos, itos); |
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517 locals_index(rbx); |
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518 __ movl(rax, iaddress(rbx)); |
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519 __ push(itos); |
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520 locals_index(rbx, 3); |
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521 __ movl(rax, iaddress(rbx)); |
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522 } |
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523 |
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524 void TemplateTable::fast_iload() { |
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525 transition(vtos, itos); |
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526 locals_index(rbx); |
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527 __ movl(rax, iaddress(rbx)); |
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528 } |
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529 |
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530 |
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531 void TemplateTable::lload() { |
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532 transition(vtos, ltos); |
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533 locals_index(rbx); |
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534 __ movptr(rax, laddress(rbx)); |
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535 NOT_LP64(__ movl(rdx, haddress(rbx))); |
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536 } |
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537 |
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538 |
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539 void TemplateTable::fload() { |
|
540 transition(vtos, ftos); |
|
541 locals_index(rbx); |
|
542 __ fld_s(faddress(rbx)); |
|
543 } |
|
544 |
|
545 |
|
546 void TemplateTable::dload() { |
|
547 transition(vtos, dtos); |
|
548 locals_index(rbx); |
|
549 __ fld_d(daddress(rbx)); |
|
550 } |
|
551 |
|
552 |
|
553 void TemplateTable::aload() { |
|
554 transition(vtos, atos); |
|
555 locals_index(rbx); |
|
556 __ movptr(rax, aaddress(rbx)); |
|
557 } |
|
558 |
|
559 |
|
560 void TemplateTable::locals_index_wide(Register reg) { |
|
561 __ load_unsigned_short(reg, at_bcp(2)); |
|
562 __ bswapl(reg); |
|
563 __ shrl(reg, 16); |
|
564 __ negptr(reg); |
|
565 } |
|
566 |
|
567 |
|
568 void TemplateTable::wide_iload() { |
|
569 transition(vtos, itos); |
|
570 locals_index_wide(rbx); |
|
571 __ movl(rax, iaddress(rbx)); |
|
572 } |
|
573 |
|
574 |
|
575 void TemplateTable::wide_lload() { |
|
576 transition(vtos, ltos); |
|
577 locals_index_wide(rbx); |
|
578 __ movptr(rax, laddress(rbx)); |
|
579 NOT_LP64(__ movl(rdx, haddress(rbx))); |
|
580 } |
|
581 |
|
582 |
|
583 void TemplateTable::wide_fload() { |
|
584 transition(vtos, ftos); |
|
585 locals_index_wide(rbx); |
|
586 __ fld_s(faddress(rbx)); |
|
587 } |
|
588 |
|
589 |
|
590 void TemplateTable::wide_dload() { |
|
591 transition(vtos, dtos); |
|
592 locals_index_wide(rbx); |
|
593 __ fld_d(daddress(rbx)); |
|
594 } |
|
595 |
|
596 |
|
597 void TemplateTable::wide_aload() { |
|
598 transition(vtos, atos); |
|
599 locals_index_wide(rbx); |
|
600 __ movptr(rax, aaddress(rbx)); |
|
601 } |
|
602 |
|
603 void TemplateTable::index_check(Register array, Register index) { |
|
604 // Pop ptr into array |
|
605 __ pop_ptr(array); |
|
606 index_check_without_pop(array, index); |
|
607 } |
|
608 |
|
609 void TemplateTable::index_check_without_pop(Register array, Register index) { |
|
610 // destroys rbx, |
|
611 // check array |
|
612 __ null_check(array, arrayOopDesc::length_offset_in_bytes()); |
|
613 LP64_ONLY(__ movslq(index, index)); |
|
614 // check index |
|
615 __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes())); |
|
616 if (index != rbx) { |
|
617 // ??? convention: move aberrant index into rbx, for exception message |
|
618 assert(rbx != array, "different registers"); |
|
619 __ mov(rbx, index); |
|
620 } |
|
621 __ jump_cc(Assembler::aboveEqual, |
|
622 ExternalAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry)); |
|
623 } |
|
624 |
|
625 |
|
626 void TemplateTable::iaload() { |
|
627 transition(itos, itos); |
|
628 // rdx: array |
|
629 index_check(rdx, rax); // kills rbx, |
|
630 // rax,: index |
|
631 __ movl(rax, Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_INT))); |
|
632 } |
|
633 |
|
634 |
|
635 void TemplateTable::laload() { |
|
636 transition(itos, ltos); |
|
637 // rax,: index |
|
638 // rdx: array |
|
639 index_check(rdx, rax); |
|
640 __ mov(rbx, rax); |
|
641 // rbx,: index |
|
642 __ movptr(rax, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize)); |
|
643 NOT_LP64(__ movl(rdx, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize))); |
|
644 } |
|
645 |
|
646 |
|
647 void TemplateTable::faload() { |
|
648 transition(itos, ftos); |
|
649 // rdx: array |
|
650 index_check(rdx, rax); // kills rbx, |
|
651 // rax,: index |
|
652 __ fld_s(Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT))); |
|
653 } |
|
654 |
|
655 |
|
656 void TemplateTable::daload() { |
|
657 transition(itos, dtos); |
|
658 // rdx: array |
|
659 index_check(rdx, rax); // kills rbx, |
|
660 // rax,: index |
|
661 __ fld_d(Address(rdx, rax, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); |
|
662 } |
|
663 |
|
664 |
|
665 void TemplateTable::aaload() { |
|
666 transition(itos, atos); |
|
667 // rdx: array |
|
668 index_check(rdx, rax); // kills rbx, |
|
669 // rax,: index |
|
670 __ movptr(rax, Address(rdx, rax, Address::times_ptr, arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
|
671 } |
|
672 |
|
673 |
|
674 void TemplateTable::baload() { |
|
675 transition(itos, itos); |
|
676 // rdx: array |
|
677 index_check(rdx, rax); // kills rbx, |
|
678 // rax,: index |
|
679 // can do better code for P5 - fix this at some point |
|
680 __ load_signed_byte(rbx, Address(rdx, rax, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE))); |
|
681 __ mov(rax, rbx); |
|
682 } |
|
683 |
|
684 |
|
685 void TemplateTable::caload() { |
|
686 transition(itos, itos); |
|
687 // rdx: array |
|
688 index_check(rdx, rax); // kills rbx, |
|
689 // rax,: index |
|
690 // can do better code for P5 - may want to improve this at some point |
|
691 __ load_unsigned_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
|
692 __ mov(rax, rbx); |
|
693 } |
|
694 |
|
695 // iload followed by caload frequent pair |
|
696 void TemplateTable::fast_icaload() { |
|
697 transition(vtos, itos); |
|
698 // load index out of locals |
|
699 locals_index(rbx); |
|
700 __ movl(rax, iaddress(rbx)); |
|
701 |
|
702 // rdx: array |
|
703 index_check(rdx, rax); |
|
704 // rax,: index |
|
705 __ load_unsigned_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
|
706 __ mov(rax, rbx); |
|
707 } |
|
708 |
|
709 void TemplateTable::saload() { |
|
710 transition(itos, itos); |
|
711 // rdx: array |
|
712 index_check(rdx, rax); // kills rbx, |
|
713 // rax,: index |
|
714 // can do better code for P5 - may want to improve this at some point |
|
715 __ load_signed_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_SHORT))); |
|
716 __ mov(rax, rbx); |
|
717 } |
|
718 |
|
719 |
|
720 void TemplateTable::iload(int n) { |
|
721 transition(vtos, itos); |
|
722 __ movl(rax, iaddress(n)); |
|
723 } |
|
724 |
|
725 |
|
726 void TemplateTable::lload(int n) { |
|
727 transition(vtos, ltos); |
|
728 __ movptr(rax, laddress(n)); |
|
729 NOT_LP64(__ movptr(rdx, haddress(n))); |
|
730 } |
|
731 |
|
732 |
|
733 void TemplateTable::fload(int n) { |
|
734 transition(vtos, ftos); |
|
735 __ fld_s(faddress(n)); |
|
736 } |
|
737 |
|
738 |
|
739 void TemplateTable::dload(int n) { |
|
740 transition(vtos, dtos); |
|
741 __ fld_d(daddress(n)); |
|
742 } |
|
743 |
|
744 |
|
745 void TemplateTable::aload(int n) { |
|
746 transition(vtos, atos); |
|
747 __ movptr(rax, aaddress(n)); |
|
748 } |
|
749 |
|
750 |
|
751 void TemplateTable::aload_0() { |
|
752 transition(vtos, atos); |
|
753 // According to bytecode histograms, the pairs: |
|
754 // |
|
755 // _aload_0, _fast_igetfield |
|
756 // _aload_0, _fast_agetfield |
|
757 // _aload_0, _fast_fgetfield |
|
758 // |
|
759 // occur frequently. If RewriteFrequentPairs is set, the (slow) _aload_0 |
|
760 // bytecode checks if the next bytecode is either _fast_igetfield, |
|
761 // _fast_agetfield or _fast_fgetfield and then rewrites the |
|
762 // current bytecode into a pair bytecode; otherwise it rewrites the current |
|
763 // bytecode into _fast_aload_0 that doesn't do the pair check anymore. |
|
764 // |
|
765 // Note: If the next bytecode is _getfield, the rewrite must be delayed, |
|
766 // otherwise we may miss an opportunity for a pair. |
|
767 // |
|
768 // Also rewrite frequent pairs |
|
769 // aload_0, aload_1 |
|
770 // aload_0, iload_1 |
|
771 // These bytecodes with a small amount of code are most profitable to rewrite |
|
772 if (RewriteFrequentPairs) { |
|
773 Label rewrite, done; |
|
774 // get next byte |
|
775 __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_aload_0))); |
|
776 |
|
777 // do actual aload_0 |
|
778 aload(0); |
|
779 |
|
780 // if _getfield then wait with rewrite |
|
781 __ cmpl(rbx, Bytecodes::_getfield); |
|
782 __ jcc(Assembler::equal, done); |
|
783 |
|
784 // if _igetfield then reqrite to _fast_iaccess_0 |
|
785 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); |
|
786 __ cmpl(rbx, Bytecodes::_fast_igetfield); |
|
787 __ movl(rcx, Bytecodes::_fast_iaccess_0); |
|
788 __ jccb(Assembler::equal, rewrite); |
|
789 |
|
790 // if _agetfield then reqrite to _fast_aaccess_0 |
|
791 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); |
|
792 __ cmpl(rbx, Bytecodes::_fast_agetfield); |
|
793 __ movl(rcx, Bytecodes::_fast_aaccess_0); |
|
794 __ jccb(Assembler::equal, rewrite); |
|
795 |
|
796 // if _fgetfield then reqrite to _fast_faccess_0 |
|
797 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); |
|
798 __ cmpl(rbx, Bytecodes::_fast_fgetfield); |
|
799 __ movl(rcx, Bytecodes::_fast_faccess_0); |
|
800 __ jccb(Assembler::equal, rewrite); |
|
801 |
|
802 // else rewrite to _fast_aload0 |
|
803 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == Bytecodes::_aload_0, "fix bytecode definition"); |
|
804 __ movl(rcx, Bytecodes::_fast_aload_0); |
|
805 |
|
806 // rewrite |
|
807 // rcx: fast bytecode |
|
808 __ bind(rewrite); |
|
809 patch_bytecode(Bytecodes::_aload_0, rcx, rbx, false); |
|
810 |
|
811 __ bind(done); |
|
812 } else { |
|
813 aload(0); |
|
814 } |
|
815 } |
|
816 |
|
817 void TemplateTable::istore() { |
|
818 transition(itos, vtos); |
|
819 locals_index(rbx); |
|
820 __ movl(iaddress(rbx), rax); |
|
821 } |
|
822 |
|
823 |
|
824 void TemplateTable::lstore() { |
|
825 transition(ltos, vtos); |
|
826 locals_index(rbx); |
|
827 __ movptr(laddress(rbx), rax); |
|
828 NOT_LP64(__ movptr(haddress(rbx), rdx)); |
|
829 } |
|
830 |
|
831 |
|
832 void TemplateTable::fstore() { |
|
833 transition(ftos, vtos); |
|
834 locals_index(rbx); |
|
835 __ fstp_s(faddress(rbx)); |
|
836 } |
|
837 |
|
838 |
|
839 void TemplateTable::dstore() { |
|
840 transition(dtos, vtos); |
|
841 locals_index(rbx); |
|
842 __ fstp_d(daddress(rbx)); |
|
843 } |
|
844 |
|
845 |
|
846 void TemplateTable::astore() { |
|
847 transition(vtos, vtos); |
|
848 __ pop_ptr(rax); |
|
849 locals_index(rbx); |
|
850 __ movptr(aaddress(rbx), rax); |
|
851 } |
|
852 |
|
853 |
|
854 void TemplateTable::wide_istore() { |
|
855 transition(vtos, vtos); |
|
856 __ pop_i(rax); |
|
857 locals_index_wide(rbx); |
|
858 __ movl(iaddress(rbx), rax); |
|
859 } |
|
860 |
|
861 |
|
862 void TemplateTable::wide_lstore() { |
|
863 transition(vtos, vtos); |
|
864 __ pop_l(rax, rdx); |
|
865 locals_index_wide(rbx); |
|
866 __ movptr(laddress(rbx), rax); |
|
867 NOT_LP64(__ movl(haddress(rbx), rdx)); |
|
868 } |
|
869 |
|
870 |
|
871 void TemplateTable::wide_fstore() { |
|
872 wide_istore(); |
|
873 } |
|
874 |
|
875 |
|
876 void TemplateTable::wide_dstore() { |
|
877 wide_lstore(); |
|
878 } |
|
879 |
|
880 |
|
881 void TemplateTable::wide_astore() { |
|
882 transition(vtos, vtos); |
|
883 __ pop_ptr(rax); |
|
884 locals_index_wide(rbx); |
|
885 __ movptr(aaddress(rbx), rax); |
|
886 } |
|
887 |
|
888 |
|
889 void TemplateTable::iastore() { |
|
890 transition(itos, vtos); |
|
891 __ pop_i(rbx); |
|
892 // rax,: value |
|
893 // rdx: array |
|
894 index_check(rdx, rbx); // prefer index in rbx, |
|
895 // rbx,: index |
|
896 __ movl(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_INT)), rax); |
|
897 } |
|
898 |
|
899 |
|
900 void TemplateTable::lastore() { |
|
901 transition(ltos, vtos); |
|
902 __ pop_i(rbx); |
|
903 // rax,: low(value) |
|
904 // rcx: array |
|
905 // rdx: high(value) |
|
906 index_check(rcx, rbx); // prefer index in rbx, |
|
907 // rbx,: index |
|
908 __ movptr(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize), rax); |
|
909 NOT_LP64(__ movl(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize), rdx)); |
|
910 } |
|
911 |
|
912 |
|
913 void TemplateTable::fastore() { |
|
914 transition(ftos, vtos); |
|
915 __ pop_i(rbx); |
|
916 // rdx: array |
|
917 // st0: value |
|
918 index_check(rdx, rbx); // prefer index in rbx, |
|
919 // rbx,: index |
|
920 __ fstp_s(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT))); |
|
921 } |
|
922 |
|
923 |
|
924 void TemplateTable::dastore() { |
|
925 transition(dtos, vtos); |
|
926 __ pop_i(rbx); |
|
927 // rdx: array |
|
928 // st0: value |
|
929 index_check(rdx, rbx); // prefer index in rbx, |
|
930 // rbx,: index |
|
931 __ fstp_d(Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); |
|
932 } |
|
933 |
|
934 |
|
935 void TemplateTable::aastore() { |
|
936 Label is_null, ok_is_subtype, done; |
|
937 transition(vtos, vtos); |
|
938 // stack: ..., array, index, value |
|
939 __ movptr(rax, at_tos()); // Value |
|
940 __ movl(rcx, at_tos_p1()); // Index |
|
941 __ movptr(rdx, at_tos_p2()); // Array |
|
942 |
|
943 Address element_address(rdx, rcx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_OBJECT)); |
|
944 index_check_without_pop(rdx, rcx); // kills rbx, |
|
945 // do array store check - check for NULL value first |
|
946 __ testptr(rax, rax); |
|
947 __ jcc(Assembler::zero, is_null); |
|
948 |
|
949 // Move subklass into EBX |
|
950 __ load_klass(rbx, rax); |
|
951 // Move superklass into EAX |
|
952 __ load_klass(rax, rdx); |
|
953 __ movptr(rax, Address(rax, ObjArrayKlass::element_klass_offset())); |
|
954 // Compress array+index*wordSize+12 into a single register. Frees ECX. |
|
955 __ lea(rdx, element_address); |
|
956 |
|
957 // Generate subtype check. Blows ECX. Resets EDI to locals. |
|
958 // Superklass in EAX. Subklass in EBX. |
|
959 __ gen_subtype_check( rbx, ok_is_subtype ); |
|
960 |
|
961 // Come here on failure |
|
962 // object is at TOS |
|
963 __ jump(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry)); |
|
964 |
|
965 // Come here on success |
|
966 __ bind(ok_is_subtype); |
|
967 |
|
968 // Get the value to store |
|
969 __ movptr(rax, at_rsp()); |
|
970 // and store it with appropriate barrier |
|
971 do_oop_store(_masm, Address(rdx, 0), rax, _bs->kind(), true); |
|
972 |
|
973 __ jmp(done); |
|
974 |
|
975 // Have a NULL in EAX, EDX=array, ECX=index. Store NULL at ary[idx] |
|
976 __ bind(is_null); |
|
977 __ profile_null_seen(rbx); |
|
978 |
|
979 // Store NULL, (noreg means NULL to do_oop_store) |
|
980 do_oop_store(_masm, element_address, noreg, _bs->kind(), true); |
|
981 |
|
982 // Pop stack arguments |
|
983 __ bind(done); |
|
984 __ addptr(rsp, 3 * Interpreter::stackElementSize); |
|
985 } |
|
986 |
|
987 |
|
988 void TemplateTable::bastore() { |
|
989 transition(itos, vtos); |
|
990 __ pop_i(rbx); |
|
991 // rax,: value |
|
992 // rdx: array |
|
993 index_check(rdx, rbx); // prefer index in rbx, |
|
994 // rbx,: index |
|
995 __ movb(Address(rdx, rbx, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE)), rax); |
|
996 } |
|
997 |
|
998 |
|
999 void TemplateTable::castore() { |
|
1000 transition(itos, vtos); |
|
1001 __ pop_i(rbx); |
|
1002 // rax,: value |
|
1003 // rdx: array |
|
1004 index_check(rdx, rbx); // prefer index in rbx, |
|
1005 // rbx,: index |
|
1006 __ movw(Address(rdx, rbx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)), rax); |
|
1007 } |
|
1008 |
|
1009 |
|
1010 void TemplateTable::sastore() { |
|
1011 castore(); |
|
1012 } |
|
1013 |
|
1014 |
|
1015 void TemplateTable::istore(int n) { |
|
1016 transition(itos, vtos); |
|
1017 __ movl(iaddress(n), rax); |
|
1018 } |
|
1019 |
|
1020 |
|
1021 void TemplateTable::lstore(int n) { |
|
1022 transition(ltos, vtos); |
|
1023 __ movptr(laddress(n), rax); |
|
1024 NOT_LP64(__ movptr(haddress(n), rdx)); |
|
1025 } |
|
1026 |
|
1027 |
|
1028 void TemplateTable::fstore(int n) { |
|
1029 transition(ftos, vtos); |
|
1030 __ fstp_s(faddress(n)); |
|
1031 } |
|
1032 |
|
1033 |
|
1034 void TemplateTable::dstore(int n) { |
|
1035 transition(dtos, vtos); |
|
1036 __ fstp_d(daddress(n)); |
|
1037 } |
|
1038 |
|
1039 |
|
1040 void TemplateTable::astore(int n) { |
|
1041 transition(vtos, vtos); |
|
1042 __ pop_ptr(rax); |
|
1043 __ movptr(aaddress(n), rax); |
|
1044 } |
|
1045 |
|
1046 |
|
1047 void TemplateTable::pop() { |
|
1048 transition(vtos, vtos); |
|
1049 __ addptr(rsp, Interpreter::stackElementSize); |
|
1050 } |
|
1051 |
|
1052 |
|
1053 void TemplateTable::pop2() { |
|
1054 transition(vtos, vtos); |
|
1055 __ addptr(rsp, 2*Interpreter::stackElementSize); |
|
1056 } |
|
1057 |
|
1058 |
|
1059 void TemplateTable::dup() { |
|
1060 transition(vtos, vtos); |
|
1061 // stack: ..., a |
|
1062 __ load_ptr(0, rax); |
|
1063 __ push_ptr(rax); |
|
1064 // stack: ..., a, a |
|
1065 } |
|
1066 |
|
1067 |
|
1068 void TemplateTable::dup_x1() { |
|
1069 transition(vtos, vtos); |
|
1070 // stack: ..., a, b |
|
1071 __ load_ptr( 0, rax); // load b |
|
1072 __ load_ptr( 1, rcx); // load a |
|
1073 __ store_ptr(1, rax); // store b |
|
1074 __ store_ptr(0, rcx); // store a |
|
1075 __ push_ptr(rax); // push b |
|
1076 // stack: ..., b, a, b |
|
1077 } |
|
1078 |
|
1079 |
|
1080 void TemplateTable::dup_x2() { |
|
1081 transition(vtos, vtos); |
|
1082 // stack: ..., a, b, c |
|
1083 __ load_ptr( 0, rax); // load c |
|
1084 __ load_ptr( 2, rcx); // load a |
|
1085 __ store_ptr(2, rax); // store c in a |
|
1086 __ push_ptr(rax); // push c |
|
1087 // stack: ..., c, b, c, c |
|
1088 __ load_ptr( 2, rax); // load b |
|
1089 __ store_ptr(2, rcx); // store a in b |
|
1090 // stack: ..., c, a, c, c |
|
1091 __ store_ptr(1, rax); // store b in c |
|
1092 // stack: ..., c, a, b, c |
|
1093 } |
|
1094 |
|
1095 |
|
1096 void TemplateTable::dup2() { |
|
1097 transition(vtos, vtos); |
|
1098 // stack: ..., a, b |
|
1099 __ load_ptr(1, rax); // load a |
|
1100 __ push_ptr(rax); // push a |
|
1101 __ load_ptr(1, rax); // load b |
|
1102 __ push_ptr(rax); // push b |
|
1103 // stack: ..., a, b, a, b |
|
1104 } |
|
1105 |
|
1106 |
|
1107 void TemplateTable::dup2_x1() { |
|
1108 transition(vtos, vtos); |
|
1109 // stack: ..., a, b, c |
|
1110 __ load_ptr( 0, rcx); // load c |
|
1111 __ load_ptr( 1, rax); // load b |
|
1112 __ push_ptr(rax); // push b |
|
1113 __ push_ptr(rcx); // push c |
|
1114 // stack: ..., a, b, c, b, c |
|
1115 __ store_ptr(3, rcx); // store c in b |
|
1116 // stack: ..., a, c, c, b, c |
|
1117 __ load_ptr( 4, rcx); // load a |
|
1118 __ store_ptr(2, rcx); // store a in 2nd c |
|
1119 // stack: ..., a, c, a, b, c |
|
1120 __ store_ptr(4, rax); // store b in a |
|
1121 // stack: ..., b, c, a, b, c |
|
1122 // stack: ..., b, c, a, b, c |
|
1123 } |
|
1124 |
|
1125 |
|
1126 void TemplateTable::dup2_x2() { |
|
1127 transition(vtos, vtos); |
|
1128 // stack: ..., a, b, c, d |
|
1129 __ load_ptr( 0, rcx); // load d |
|
1130 __ load_ptr( 1, rax); // load c |
|
1131 __ push_ptr(rax); // push c |
|
1132 __ push_ptr(rcx); // push d |
|
1133 // stack: ..., a, b, c, d, c, d |
|
1134 __ load_ptr( 4, rax); // load b |
|
1135 __ store_ptr(2, rax); // store b in d |
|
1136 __ store_ptr(4, rcx); // store d in b |
|
1137 // stack: ..., a, d, c, b, c, d |
|
1138 __ load_ptr( 5, rcx); // load a |
|
1139 __ load_ptr( 3, rax); // load c |
|
1140 __ store_ptr(3, rcx); // store a in c |
|
1141 __ store_ptr(5, rax); // store c in a |
|
1142 // stack: ..., c, d, a, b, c, d |
|
1143 // stack: ..., c, d, a, b, c, d |
|
1144 } |
|
1145 |
|
1146 |
|
1147 void TemplateTable::swap() { |
|
1148 transition(vtos, vtos); |
|
1149 // stack: ..., a, b |
|
1150 __ load_ptr( 1, rcx); // load a |
|
1151 __ load_ptr( 0, rax); // load b |
|
1152 __ store_ptr(0, rcx); // store a in b |
|
1153 __ store_ptr(1, rax); // store b in a |
|
1154 // stack: ..., b, a |
|
1155 } |
|
1156 |
|
1157 |
|
1158 void TemplateTable::iop2(Operation op) { |
|
1159 transition(itos, itos); |
|
1160 switch (op) { |
|
1161 case add : __ pop_i(rdx); __ addl (rax, rdx); break; |
|
1162 case sub : __ mov(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break; |
|
1163 case mul : __ pop_i(rdx); __ imull(rax, rdx); break; |
|
1164 case _and : __ pop_i(rdx); __ andl (rax, rdx); break; |
|
1165 case _or : __ pop_i(rdx); __ orl (rax, rdx); break; |
|
1166 case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break; |
|
1167 case shl : __ mov(rcx, rax); __ pop_i(rax); __ shll (rax); break; // implicit masking of lower 5 bits by Intel shift instr. |
|
1168 case shr : __ mov(rcx, rax); __ pop_i(rax); __ sarl (rax); break; // implicit masking of lower 5 bits by Intel shift instr. |
|
1169 case ushr : __ mov(rcx, rax); __ pop_i(rax); __ shrl (rax); break; // implicit masking of lower 5 bits by Intel shift instr. |
|
1170 default : ShouldNotReachHere(); |
|
1171 } |
|
1172 } |
|
1173 |
|
1174 |
|
1175 void TemplateTable::lop2(Operation op) { |
|
1176 transition(ltos, ltos); |
|
1177 __ pop_l(rbx, rcx); |
|
1178 switch (op) { |
|
1179 case add : __ addl(rax, rbx); __ adcl(rdx, rcx); break; |
|
1180 case sub : __ subl(rbx, rax); __ sbbl(rcx, rdx); |
|
1181 __ mov (rax, rbx); __ mov (rdx, rcx); break; |
|
1182 case _and : __ andl(rax, rbx); __ andl(rdx, rcx); break; |
|
1183 case _or : __ orl (rax, rbx); __ orl (rdx, rcx); break; |
|
1184 case _xor : __ xorl(rax, rbx); __ xorl(rdx, rcx); break; |
|
1185 default : ShouldNotReachHere(); |
|
1186 } |
|
1187 } |
|
1188 |
|
1189 |
|
1190 void TemplateTable::idiv() { |
|
1191 transition(itos, itos); |
|
1192 __ mov(rcx, rax); |
|
1193 __ pop_i(rax); |
|
1194 // Note: could xor rax, and rcx and compare with (-1 ^ min_int). If |
|
1195 // they are not equal, one could do a normal division (no correction |
|
1196 // needed), which may speed up this implementation for the common case. |
|
1197 // (see also JVM spec., p.243 & p.271) |
|
1198 __ corrected_idivl(rcx); |
|
1199 } |
|
1200 |
|
1201 |
|
1202 void TemplateTable::irem() { |
|
1203 transition(itos, itos); |
|
1204 __ mov(rcx, rax); |
|
1205 __ pop_i(rax); |
|
1206 // Note: could xor rax, and rcx and compare with (-1 ^ min_int). If |
|
1207 // they are not equal, one could do a normal division (no correction |
|
1208 // needed), which may speed up this implementation for the common case. |
|
1209 // (see also JVM spec., p.243 & p.271) |
|
1210 __ corrected_idivl(rcx); |
|
1211 __ mov(rax, rdx); |
|
1212 } |
|
1213 |
|
1214 |
|
1215 void TemplateTable::lmul() { |
|
1216 transition(ltos, ltos); |
|
1217 __ pop_l(rbx, rcx); |
|
1218 __ push(rcx); __ push(rbx); |
|
1219 __ push(rdx); __ push(rax); |
|
1220 __ lmul(2 * wordSize, 0); |
|
1221 __ addptr(rsp, 4 * wordSize); // take off temporaries |
|
1222 } |
|
1223 |
|
1224 |
|
1225 void TemplateTable::ldiv() { |
|
1226 transition(ltos, ltos); |
|
1227 __ pop_l(rbx, rcx); |
|
1228 __ push(rcx); __ push(rbx); |
|
1229 __ push(rdx); __ push(rax); |
|
1230 // check if y = 0 |
|
1231 __ orl(rax, rdx); |
|
1232 __ jump_cc(Assembler::zero, |
|
1233 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); |
|
1234 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::ldiv)); |
|
1235 __ addptr(rsp, 4 * wordSize); // take off temporaries |
|
1236 } |
|
1237 |
|
1238 |
|
1239 void TemplateTable::lrem() { |
|
1240 transition(ltos, ltos); |
|
1241 __ pop_l(rbx, rcx); |
|
1242 __ push(rcx); __ push(rbx); |
|
1243 __ push(rdx); __ push(rax); |
|
1244 // check if y = 0 |
|
1245 __ orl(rax, rdx); |
|
1246 __ jump_cc(Assembler::zero, |
|
1247 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); |
|
1248 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::lrem)); |
|
1249 __ addptr(rsp, 4 * wordSize); |
|
1250 } |
|
1251 |
|
1252 |
|
1253 void TemplateTable::lshl() { |
|
1254 transition(itos, ltos); |
|
1255 __ movl(rcx, rax); // get shift count |
|
1256 __ pop_l(rax, rdx); // get shift value |
|
1257 __ lshl(rdx, rax); |
|
1258 } |
|
1259 |
|
1260 |
|
1261 void TemplateTable::lshr() { |
|
1262 transition(itos, ltos); |
|
1263 __ mov(rcx, rax); // get shift count |
|
1264 __ pop_l(rax, rdx); // get shift value |
|
1265 __ lshr(rdx, rax, true); |
|
1266 } |
|
1267 |
|
1268 |
|
1269 void TemplateTable::lushr() { |
|
1270 transition(itos, ltos); |
|
1271 __ mov(rcx, rax); // get shift count |
|
1272 __ pop_l(rax, rdx); // get shift value |
|
1273 __ lshr(rdx, rax); |
|
1274 } |
|
1275 |
|
1276 |
|
1277 void TemplateTable::fop2(Operation op) { |
|
1278 transition(ftos, ftos); |
|
1279 switch (op) { |
|
1280 case add: __ fadd_s (at_rsp()); break; |
|
1281 case sub: __ fsubr_s(at_rsp()); break; |
|
1282 case mul: __ fmul_s (at_rsp()); break; |
|
1283 case div: __ fdivr_s(at_rsp()); break; |
|
1284 case rem: __ fld_s (at_rsp()); __ fremr(rax); break; |
|
1285 default : ShouldNotReachHere(); |
|
1286 } |
|
1287 __ f2ieee(); |
|
1288 __ pop(rax); // pop float thing off |
|
1289 } |
|
1290 |
|
1291 |
|
1292 void TemplateTable::dop2(Operation op) { |
|
1293 transition(dtos, dtos); |
|
1294 |
|
1295 switch (op) { |
|
1296 case add: __ fadd_d (at_rsp()); break; |
|
1297 case sub: __ fsubr_d(at_rsp()); break; |
|
1298 case mul: { |
|
1299 Label L_strict; |
|
1300 Label L_join; |
|
1301 const Address access_flags (rcx, Method::access_flags_offset()); |
|
1302 __ get_method(rcx); |
|
1303 __ movl(rcx, access_flags); |
|
1304 __ testl(rcx, JVM_ACC_STRICT); |
|
1305 __ jccb(Assembler::notZero, L_strict); |
|
1306 __ fmul_d (at_rsp()); |
|
1307 __ jmpb(L_join); |
|
1308 __ bind(L_strict); |
|
1309 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); |
|
1310 __ fmulp(); |
|
1311 __ fmul_d (at_rsp()); |
|
1312 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); |
|
1313 __ fmulp(); |
|
1314 __ bind(L_join); |
|
1315 break; |
|
1316 } |
|
1317 case div: { |
|
1318 Label L_strict; |
|
1319 Label L_join; |
|
1320 const Address access_flags (rcx, Method::access_flags_offset()); |
|
1321 __ get_method(rcx); |
|
1322 __ movl(rcx, access_flags); |
|
1323 __ testl(rcx, JVM_ACC_STRICT); |
|
1324 __ jccb(Assembler::notZero, L_strict); |
|
1325 __ fdivr_d(at_rsp()); |
|
1326 __ jmp(L_join); |
|
1327 __ bind(L_strict); |
|
1328 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); |
|
1329 __ fmul_d (at_rsp()); |
|
1330 __ fdivrp(); |
|
1331 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); |
|
1332 __ fmulp(); |
|
1333 __ bind(L_join); |
|
1334 break; |
|
1335 } |
|
1336 case rem: __ fld_d (at_rsp()); __ fremr(rax); break; |
|
1337 default : ShouldNotReachHere(); |
|
1338 } |
|
1339 __ d2ieee(); |
|
1340 // Pop double precision number from rsp. |
|
1341 __ pop(rax); |
|
1342 __ pop(rdx); |
|
1343 } |
|
1344 |
|
1345 |
|
1346 void TemplateTable::ineg() { |
|
1347 transition(itos, itos); |
|
1348 __ negl(rax); |
|
1349 } |
|
1350 |
|
1351 |
|
1352 void TemplateTable::lneg() { |
|
1353 transition(ltos, ltos); |
|
1354 __ lneg(rdx, rax); |
|
1355 } |
|
1356 |
|
1357 |
|
1358 void TemplateTable::fneg() { |
|
1359 transition(ftos, ftos); |
|
1360 __ fchs(); |
|
1361 } |
|
1362 |
|
1363 |
|
1364 void TemplateTable::dneg() { |
|
1365 transition(dtos, dtos); |
|
1366 __ fchs(); |
|
1367 } |
|
1368 |
|
1369 |
|
1370 void TemplateTable::iinc() { |
|
1371 transition(vtos, vtos); |
|
1372 __ load_signed_byte(rdx, at_bcp(2)); // get constant |
|
1373 locals_index(rbx); |
|
1374 __ addl(iaddress(rbx), rdx); |
|
1375 } |
|
1376 |
|
1377 |
|
1378 void TemplateTable::wide_iinc() { |
|
1379 transition(vtos, vtos); |
|
1380 __ movl(rdx, at_bcp(4)); // get constant |
|
1381 locals_index_wide(rbx); |
|
1382 __ bswapl(rdx); // swap bytes & sign-extend constant |
|
1383 __ sarl(rdx, 16); |
|
1384 __ addl(iaddress(rbx), rdx); |
|
1385 // Note: should probably use only one movl to get both |
|
1386 // the index and the constant -> fix this |
|
1387 } |
|
1388 |
|
1389 |
|
1390 void TemplateTable::convert() { |
|
1391 // Checking |
|
1392 #ifdef ASSERT |
|
1393 { TosState tos_in = ilgl; |
|
1394 TosState tos_out = ilgl; |
|
1395 switch (bytecode()) { |
|
1396 case Bytecodes::_i2l: // fall through |
|
1397 case Bytecodes::_i2f: // fall through |
|
1398 case Bytecodes::_i2d: // fall through |
|
1399 case Bytecodes::_i2b: // fall through |
|
1400 case Bytecodes::_i2c: // fall through |
|
1401 case Bytecodes::_i2s: tos_in = itos; break; |
|
1402 case Bytecodes::_l2i: // fall through |
|
1403 case Bytecodes::_l2f: // fall through |
|
1404 case Bytecodes::_l2d: tos_in = ltos; break; |
|
1405 case Bytecodes::_f2i: // fall through |
|
1406 case Bytecodes::_f2l: // fall through |
|
1407 case Bytecodes::_f2d: tos_in = ftos; break; |
|
1408 case Bytecodes::_d2i: // fall through |
|
1409 case Bytecodes::_d2l: // fall through |
|
1410 case Bytecodes::_d2f: tos_in = dtos; break; |
|
1411 default : ShouldNotReachHere(); |
|
1412 } |
|
1413 switch (bytecode()) { |
|
1414 case Bytecodes::_l2i: // fall through |
|
1415 case Bytecodes::_f2i: // fall through |
|
1416 case Bytecodes::_d2i: // fall through |
|
1417 case Bytecodes::_i2b: // fall through |
|
1418 case Bytecodes::_i2c: // fall through |
|
1419 case Bytecodes::_i2s: tos_out = itos; break; |
|
1420 case Bytecodes::_i2l: // fall through |
|
1421 case Bytecodes::_f2l: // fall through |
|
1422 case Bytecodes::_d2l: tos_out = ltos; break; |
|
1423 case Bytecodes::_i2f: // fall through |
|
1424 case Bytecodes::_l2f: // fall through |
|
1425 case Bytecodes::_d2f: tos_out = ftos; break; |
|
1426 case Bytecodes::_i2d: // fall through |
|
1427 case Bytecodes::_l2d: // fall through |
|
1428 case Bytecodes::_f2d: tos_out = dtos; break; |
|
1429 default : ShouldNotReachHere(); |
|
1430 } |
|
1431 transition(tos_in, tos_out); |
|
1432 } |
|
1433 #endif // ASSERT |
|
1434 |
|
1435 // Conversion |
|
1436 // (Note: use push(rcx)/pop(rcx) for 1/2-word stack-ptr manipulation) |
|
1437 switch (bytecode()) { |
|
1438 case Bytecodes::_i2l: |
|
1439 __ extend_sign(rdx, rax); |
|
1440 break; |
|
1441 case Bytecodes::_i2f: |
|
1442 __ push(rax); // store int on tos |
|
1443 __ fild_s(at_rsp()); // load int to ST0 |
|
1444 __ f2ieee(); // truncate to float size |
|
1445 __ pop(rcx); // adjust rsp |
|
1446 break; |
|
1447 case Bytecodes::_i2d: |
|
1448 __ push(rax); // add one slot for d2ieee() |
|
1449 __ push(rax); // store int on tos |
|
1450 __ fild_s(at_rsp()); // load int to ST0 |
|
1451 __ d2ieee(); // truncate to double size |
|
1452 __ pop(rcx); // adjust rsp |
|
1453 __ pop(rcx); |
|
1454 break; |
|
1455 case Bytecodes::_i2b: |
|
1456 __ shll(rax, 24); // truncate upper 24 bits |
|
1457 __ sarl(rax, 24); // and sign-extend byte |
|
1458 LP64_ONLY(__ movsbl(rax, rax)); |
|
1459 break; |
|
1460 case Bytecodes::_i2c: |
|
1461 __ andl(rax, 0xFFFF); // truncate upper 16 bits |
|
1462 LP64_ONLY(__ movzwl(rax, rax)); |
|
1463 break; |
|
1464 case Bytecodes::_i2s: |
|
1465 __ shll(rax, 16); // truncate upper 16 bits |
|
1466 __ sarl(rax, 16); // and sign-extend short |
|
1467 LP64_ONLY(__ movswl(rax, rax)); |
|
1468 break; |
|
1469 case Bytecodes::_l2i: |
|
1470 /* nothing to do */ |
|
1471 break; |
|
1472 case Bytecodes::_l2f: |
|
1473 __ push(rdx); // store long on tos |
|
1474 __ push(rax); |
|
1475 __ fild_d(at_rsp()); // load long to ST0 |
|
1476 __ f2ieee(); // truncate to float size |
|
1477 __ pop(rcx); // adjust rsp |
|
1478 __ pop(rcx); |
|
1479 break; |
|
1480 case Bytecodes::_l2d: |
|
1481 __ push(rdx); // store long on tos |
|
1482 __ push(rax); |
|
1483 __ fild_d(at_rsp()); // load long to ST0 |
|
1484 __ d2ieee(); // truncate to double size |
|
1485 __ pop(rcx); // adjust rsp |
|
1486 __ pop(rcx); |
|
1487 break; |
|
1488 case Bytecodes::_f2i: |
|
1489 __ push(rcx); // reserve space for argument |
|
1490 __ fstp_s(at_rsp()); // pass float argument on stack |
|
1491 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1); |
|
1492 break; |
|
1493 case Bytecodes::_f2l: |
|
1494 __ push(rcx); // reserve space for argument |
|
1495 __ fstp_s(at_rsp()); // pass float argument on stack |
|
1496 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1); |
|
1497 break; |
|
1498 case Bytecodes::_f2d: |
|
1499 /* nothing to do */ |
|
1500 break; |
|
1501 case Bytecodes::_d2i: |
|
1502 __ push(rcx); // reserve space for argument |
|
1503 __ push(rcx); |
|
1504 __ fstp_d(at_rsp()); // pass double argument on stack |
|
1505 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 2); |
|
1506 break; |
|
1507 case Bytecodes::_d2l: |
|
1508 __ push(rcx); // reserve space for argument |
|
1509 __ push(rcx); |
|
1510 __ fstp_d(at_rsp()); // pass double argument on stack |
|
1511 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 2); |
|
1512 break; |
|
1513 case Bytecodes::_d2f: |
|
1514 __ push(rcx); // reserve space for f2ieee() |
|
1515 __ f2ieee(); // truncate to float size |
|
1516 __ pop(rcx); // adjust rsp |
|
1517 break; |
|
1518 default : |
|
1519 ShouldNotReachHere(); |
|
1520 } |
|
1521 } |
|
1522 |
|
1523 |
|
1524 void TemplateTable::lcmp() { |
|
1525 transition(ltos, itos); |
|
1526 // y = rdx:rax |
|
1527 __ pop_l(rbx, rcx); // get x = rcx:rbx |
|
1528 __ lcmp2int(rcx, rbx, rdx, rax);// rcx := cmp(x, y) |
|
1529 __ mov(rax, rcx); |
|
1530 } |
|
1531 |
|
1532 |
|
1533 void TemplateTable::float_cmp(bool is_float, int unordered_result) { |
|
1534 if (is_float) { |
|
1535 __ fld_s(at_rsp()); |
|
1536 } else { |
|
1537 __ fld_d(at_rsp()); |
|
1538 __ pop(rdx); |
|
1539 } |
|
1540 __ pop(rcx); |
|
1541 __ fcmp2int(rax, unordered_result < 0); |
|
1542 } |
|
1543 |
|
1544 |
|
1545 void TemplateTable::branch(bool is_jsr, bool is_wide) { |
|
1546 __ get_method(rcx); // ECX holds method |
|
1547 __ profile_taken_branch(rax,rbx); // EAX holds updated MDP, EBX holds bumped taken count |
|
1548 |
|
1549 const ByteSize be_offset = MethodCounters::backedge_counter_offset() + |
|
1550 InvocationCounter::counter_offset(); |
|
1551 const ByteSize inv_offset = MethodCounters::invocation_counter_offset() + |
|
1552 InvocationCounter::counter_offset(); |
|
1553 |
|
1554 // Load up EDX with the branch displacement |
|
1555 if (is_wide) { |
|
1556 __ movl(rdx, at_bcp(1)); |
|
1557 } else { |
|
1558 __ load_signed_short(rdx, at_bcp(1)); |
|
1559 } |
|
1560 __ bswapl(rdx); |
|
1561 if (!is_wide) __ sarl(rdx, 16); |
|
1562 LP64_ONLY(__ movslq(rdx, rdx)); |
|
1563 |
|
1564 |
|
1565 // Handle all the JSR stuff here, then exit. |
|
1566 // It's much shorter and cleaner than intermingling with the |
|
1567 // non-JSR normal-branch stuff occurring below. |
|
1568 if (is_jsr) { |
|
1569 // Pre-load the next target bytecode into EBX |
|
1570 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1, 0)); |
|
1571 |
|
1572 // compute return address as bci in rax, |
|
1573 __ lea(rax, at_bcp((is_wide ? 5 : 3) - in_bytes(ConstMethod::codes_offset()))); |
|
1574 __ subptr(rax, Address(rcx, Method::const_offset())); |
|
1575 // Adjust the bcp in RSI by the displacement in EDX |
|
1576 __ addptr(rsi, rdx); |
|
1577 // Push return address |
|
1578 __ push_i(rax); |
|
1579 // jsr returns vtos |
|
1580 __ dispatch_only_noverify(vtos); |
|
1581 return; |
|
1582 } |
|
1583 |
|
1584 // Normal (non-jsr) branch handling |
|
1585 |
|
1586 // Adjust the bcp in RSI by the displacement in EDX |
|
1587 __ addptr(rsi, rdx); |
|
1588 |
|
1589 assert(UseLoopCounter || !UseOnStackReplacement, "on-stack-replacement requires loop counters"); |
|
1590 Label backedge_counter_overflow; |
|
1591 Label profile_method; |
|
1592 Label dispatch; |
|
1593 if (UseLoopCounter) { |
|
1594 // increment backedge counter for backward branches |
|
1595 // rax,: MDO |
|
1596 // rbx,: MDO bumped taken-count |
|
1597 // rcx: method |
|
1598 // rdx: target offset |
|
1599 // rsi: target bcp |
|
1600 // rdi: locals pointer |
|
1601 __ testl(rdx, rdx); // check if forward or backward branch |
|
1602 __ jcc(Assembler::positive, dispatch); // count only if backward branch |
|
1603 |
|
1604 // check if MethodCounters exists |
|
1605 Label has_counters; |
|
1606 __ movptr(rax, Address(rcx, Method::method_counters_offset())); |
|
1607 __ testptr(rax, rax); |
|
1608 __ jcc(Assembler::notZero, has_counters); |
|
1609 __ push(rdx); |
|
1610 __ push(rcx); |
|
1611 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::build_method_counters), |
|
1612 rcx); |
|
1613 __ pop(rcx); |
|
1614 __ pop(rdx); |
|
1615 __ movptr(rax, Address(rcx, Method::method_counters_offset())); |
|
1616 __ testptr(rax, rax); |
|
1617 __ jcc(Assembler::zero, dispatch); |
|
1618 __ bind(has_counters); |
|
1619 |
|
1620 if (TieredCompilation) { |
|
1621 Label no_mdo; |
|
1622 int increment = InvocationCounter::count_increment; |
|
1623 int mask = ((1 << Tier0BackedgeNotifyFreqLog) - 1) << InvocationCounter::count_shift; |
|
1624 if (ProfileInterpreter) { |
|
1625 // Are we profiling? |
|
1626 __ movptr(rbx, Address(rcx, in_bytes(Method::method_data_offset()))); |
|
1627 __ testptr(rbx, rbx); |
|
1628 __ jccb(Assembler::zero, no_mdo); |
|
1629 // Increment the MDO backedge counter |
|
1630 const Address mdo_backedge_counter(rbx, in_bytes(MethodData::backedge_counter_offset()) + |
|
1631 in_bytes(InvocationCounter::counter_offset())); |
|
1632 __ increment_mask_and_jump(mdo_backedge_counter, increment, mask, |
|
1633 rax, false, Assembler::zero, &backedge_counter_overflow); |
|
1634 __ jmp(dispatch); |
|
1635 } |
|
1636 __ bind(no_mdo); |
|
1637 // Increment backedge counter in MethodCounters* |
|
1638 __ movptr(rcx, Address(rcx, Method::method_counters_offset())); |
|
1639 __ increment_mask_and_jump(Address(rcx, be_offset), increment, mask, |
|
1640 rax, false, Assembler::zero, &backedge_counter_overflow); |
|
1641 } else { |
|
1642 // increment counter |
|
1643 __ movptr(rcx, Address(rcx, Method::method_counters_offset())); |
|
1644 __ movl(rax, Address(rcx, be_offset)); // load backedge counter |
|
1645 __ incrementl(rax, InvocationCounter::count_increment); // increment counter |
|
1646 __ movl(Address(rcx, be_offset), rax); // store counter |
|
1647 |
|
1648 __ movl(rax, Address(rcx, inv_offset)); // load invocation counter |
|
1649 |
|
1650 __ andl(rax, InvocationCounter::count_mask_value); // and the status bits |
|
1651 __ addl(rax, Address(rcx, be_offset)); // add both counters |
|
1652 |
|
1653 if (ProfileInterpreter) { |
|
1654 // Test to see if we should create a method data oop |
|
1655 __ cmp32(rax, |
|
1656 ExternalAddress((address) &InvocationCounter::InterpreterProfileLimit)); |
|
1657 __ jcc(Assembler::less, dispatch); |
|
1658 |
|
1659 // if no method data exists, go to profile method |
|
1660 __ test_method_data_pointer(rax, profile_method); |
|
1661 |
|
1662 if (UseOnStackReplacement) { |
|
1663 // check for overflow against rbx, which is the MDO taken count |
|
1664 __ cmp32(rbx, |
|
1665 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); |
|
1666 __ jcc(Assembler::below, dispatch); |
|
1667 |
|
1668 // When ProfileInterpreter is on, the backedge_count comes from the |
|
1669 // MethodData*, which value does not get reset on the call to |
|
1670 // frequency_counter_overflow(). To avoid excessive calls to the overflow |
|
1671 // routine while the method is being compiled, add a second test to make |
|
1672 // sure the overflow function is called only once every overflow_frequency. |
|
1673 const int overflow_frequency = 1024; |
|
1674 __ andptr(rbx, overflow_frequency-1); |
|
1675 __ jcc(Assembler::zero, backedge_counter_overflow); |
|
1676 } |
|
1677 } else { |
|
1678 if (UseOnStackReplacement) { |
|
1679 // check for overflow against rax, which is the sum of the counters |
|
1680 __ cmp32(rax, |
|
1681 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); |
|
1682 __ jcc(Assembler::aboveEqual, backedge_counter_overflow); |
|
1683 |
|
1684 } |
|
1685 } |
|
1686 } |
|
1687 __ bind(dispatch); |
|
1688 } |
|
1689 |
|
1690 // Pre-load the next target bytecode into EBX |
|
1691 __ load_unsigned_byte(rbx, Address(rsi, 0)); |
|
1692 |
|
1693 // continue with the bytecode @ target |
|
1694 // rax,: return bci for jsr's, unused otherwise |
|
1695 // rbx,: target bytecode |
|
1696 // rsi: target bcp |
|
1697 __ dispatch_only(vtos); |
|
1698 |
|
1699 if (UseLoopCounter) { |
|
1700 if (ProfileInterpreter) { |
|
1701 // Out-of-line code to allocate method data oop. |
|
1702 __ bind(profile_method); |
|
1703 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
|
1704 __ load_unsigned_byte(rbx, Address(rsi, 0)); // restore target bytecode |
|
1705 __ set_method_data_pointer_for_bcp(); |
|
1706 __ jmp(dispatch); |
|
1707 } |
|
1708 |
|
1709 if (UseOnStackReplacement) { |
|
1710 |
|
1711 // invocation counter overflow |
|
1712 __ bind(backedge_counter_overflow); |
|
1713 __ negptr(rdx); |
|
1714 __ addptr(rdx, rsi); // branch bcp |
|
1715 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rdx); |
|
1716 __ load_unsigned_byte(rbx, Address(rsi, 0)); // restore target bytecode |
|
1717 |
|
1718 // rax,: osr nmethod (osr ok) or NULL (osr not possible) |
|
1719 // rbx,: target bytecode |
|
1720 // rdx: scratch |
|
1721 // rdi: locals pointer |
|
1722 // rsi: bcp |
|
1723 __ testptr(rax, rax); // test result |
|
1724 __ jcc(Assembler::zero, dispatch); // no osr if null |
|
1725 // nmethod may have been invalidated (VM may block upon call_VM return) |
|
1726 __ movl(rcx, Address(rax, nmethod::entry_bci_offset())); |
|
1727 __ cmpl(rcx, InvalidOSREntryBci); |
|
1728 __ jcc(Assembler::equal, dispatch); |
|
1729 |
|
1730 // We have the address of an on stack replacement routine in rax, |
|
1731 // We need to prepare to execute the OSR method. First we must |
|
1732 // migrate the locals and monitors off of the stack. |
|
1733 |
|
1734 __ mov(rbx, rax); // save the nmethod |
|
1735 |
|
1736 const Register thread = rcx; |
|
1737 __ get_thread(thread); |
|
1738 call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin)); |
|
1739 // rax, is OSR buffer, move it to expected parameter location |
|
1740 __ mov(rcx, rax); |
|
1741 |
|
1742 // pop the interpreter frame |
|
1743 __ movptr(rdx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
|
1744 __ leave(); // remove frame anchor |
|
1745 __ pop(rdi); // get return address |
|
1746 __ mov(rsp, rdx); // set sp to sender sp |
|
1747 |
|
1748 // Align stack pointer for compiled code (note that caller is |
|
1749 // responsible for undoing this fixup by remembering the old SP |
|
1750 // in an rbp,-relative location) |
|
1751 __ andptr(rsp, -(StackAlignmentInBytes)); |
|
1752 |
|
1753 // push the (possibly adjusted) return address |
|
1754 __ push(rdi); |
|
1755 |
|
1756 // and begin the OSR nmethod |
|
1757 __ jmp(Address(rbx, nmethod::osr_entry_point_offset())); |
|
1758 } |
|
1759 } |
|
1760 } |
|
1761 |
|
1762 |
|
1763 void TemplateTable::if_0cmp(Condition cc) { |
|
1764 transition(itos, vtos); |
|
1765 // assume branch is more often taken than not (loops use backward branches) |
|
1766 Label not_taken; |
|
1767 __ testl(rax, rax); |
|
1768 __ jcc(j_not(cc), not_taken); |
|
1769 branch(false, false); |
|
1770 __ bind(not_taken); |
|
1771 __ profile_not_taken_branch(rax); |
|
1772 } |
|
1773 |
|
1774 |
|
1775 void TemplateTable::if_icmp(Condition cc) { |
|
1776 transition(itos, vtos); |
|
1777 // assume branch is more often taken than not (loops use backward branches) |
|
1778 Label not_taken; |
|
1779 __ pop_i(rdx); |
|
1780 __ cmpl(rdx, rax); |
|
1781 __ jcc(j_not(cc), not_taken); |
|
1782 branch(false, false); |
|
1783 __ bind(not_taken); |
|
1784 __ profile_not_taken_branch(rax); |
|
1785 } |
|
1786 |
|
1787 |
|
1788 void TemplateTable::if_nullcmp(Condition cc) { |
|
1789 transition(atos, vtos); |
|
1790 // assume branch is more often taken than not (loops use backward branches) |
|
1791 Label not_taken; |
|
1792 __ testptr(rax, rax); |
|
1793 __ jcc(j_not(cc), not_taken); |
|
1794 branch(false, false); |
|
1795 __ bind(not_taken); |
|
1796 __ profile_not_taken_branch(rax); |
|
1797 } |
|
1798 |
|
1799 |
|
1800 void TemplateTable::if_acmp(Condition cc) { |
|
1801 transition(atos, vtos); |
|
1802 // assume branch is more often taken than not (loops use backward branches) |
|
1803 Label not_taken; |
|
1804 __ pop_ptr(rdx); |
|
1805 __ cmpptr(rdx, rax); |
|
1806 __ jcc(j_not(cc), not_taken); |
|
1807 branch(false, false); |
|
1808 __ bind(not_taken); |
|
1809 __ profile_not_taken_branch(rax); |
|
1810 } |
|
1811 |
|
1812 |
|
1813 void TemplateTable::ret() { |
|
1814 transition(vtos, vtos); |
|
1815 locals_index(rbx); |
|
1816 __ movptr(rbx, iaddress(rbx)); // get return bci, compute return bcp |
|
1817 __ profile_ret(rbx, rcx); |
|
1818 __ get_method(rax); |
|
1819 __ movptr(rsi, Address(rax, Method::const_offset())); |
|
1820 __ lea(rsi, Address(rsi, rbx, Address::times_1, |
|
1821 ConstMethod::codes_offset())); |
|
1822 __ dispatch_next(vtos); |
|
1823 } |
|
1824 |
|
1825 |
|
1826 void TemplateTable::wide_ret() { |
|
1827 transition(vtos, vtos); |
|
1828 locals_index_wide(rbx); |
|
1829 __ movptr(rbx, iaddress(rbx)); // get return bci, compute return bcp |
|
1830 __ profile_ret(rbx, rcx); |
|
1831 __ get_method(rax); |
|
1832 __ movptr(rsi, Address(rax, Method::const_offset())); |
|
1833 __ lea(rsi, Address(rsi, rbx, Address::times_1, ConstMethod::codes_offset())); |
|
1834 __ dispatch_next(vtos); |
|
1835 } |
|
1836 |
|
1837 |
|
1838 void TemplateTable::tableswitch() { |
|
1839 Label default_case, continue_execution; |
|
1840 transition(itos, vtos); |
|
1841 // align rsi |
|
1842 __ lea(rbx, at_bcp(wordSize)); |
|
1843 __ andptr(rbx, -wordSize); |
|
1844 // load lo & hi |
|
1845 __ movl(rcx, Address(rbx, 1 * wordSize)); |
|
1846 __ movl(rdx, Address(rbx, 2 * wordSize)); |
|
1847 __ bswapl(rcx); |
|
1848 __ bswapl(rdx); |
|
1849 // check against lo & hi |
|
1850 __ cmpl(rax, rcx); |
|
1851 __ jccb(Assembler::less, default_case); |
|
1852 __ cmpl(rax, rdx); |
|
1853 __ jccb(Assembler::greater, default_case); |
|
1854 // lookup dispatch offset |
|
1855 __ subl(rax, rcx); |
|
1856 __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt)); |
|
1857 __ profile_switch_case(rax, rbx, rcx); |
|
1858 // continue execution |
|
1859 __ bind(continue_execution); |
|
1860 __ bswapl(rdx); |
|
1861 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1)); |
|
1862 __ addptr(rsi, rdx); |
|
1863 __ dispatch_only(vtos); |
|
1864 // handle default |
|
1865 __ bind(default_case); |
|
1866 __ profile_switch_default(rax); |
|
1867 __ movl(rdx, Address(rbx, 0)); |
|
1868 __ jmp(continue_execution); |
|
1869 } |
|
1870 |
|
1871 |
|
1872 void TemplateTable::lookupswitch() { |
|
1873 transition(itos, itos); |
|
1874 __ stop("lookupswitch bytecode should have been rewritten"); |
|
1875 } |
|
1876 |
|
1877 |
|
1878 void TemplateTable::fast_linearswitch() { |
|
1879 transition(itos, vtos); |
|
1880 Label loop_entry, loop, found, continue_execution; |
|
1881 // bswapl rax, so we can avoid bswapping the table entries |
|
1882 __ bswapl(rax); |
|
1883 // align rsi |
|
1884 __ lea(rbx, at_bcp(wordSize)); // btw: should be able to get rid of this instruction (change offsets below) |
|
1885 __ andptr(rbx, -wordSize); |
|
1886 // set counter |
|
1887 __ movl(rcx, Address(rbx, wordSize)); |
|
1888 __ bswapl(rcx); |
|
1889 __ jmpb(loop_entry); |
|
1890 // table search |
|
1891 __ bind(loop); |
|
1892 __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * wordSize)); |
|
1893 __ jccb(Assembler::equal, found); |
|
1894 __ bind(loop_entry); |
|
1895 __ decrementl(rcx); |
|
1896 __ jcc(Assembler::greaterEqual, loop); |
|
1897 // default case |
|
1898 __ profile_switch_default(rax); |
|
1899 __ movl(rdx, Address(rbx, 0)); |
|
1900 __ jmpb(continue_execution); |
|
1901 // entry found -> get offset |
|
1902 __ bind(found); |
|
1903 __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * wordSize)); |
|
1904 __ profile_switch_case(rcx, rax, rbx); |
|
1905 // continue execution |
|
1906 __ bind(continue_execution); |
|
1907 __ bswapl(rdx); |
|
1908 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1)); |
|
1909 __ addptr(rsi, rdx); |
|
1910 __ dispatch_only(vtos); |
|
1911 } |
|
1912 |
|
1913 |
|
1914 void TemplateTable::fast_binaryswitch() { |
|
1915 transition(itos, vtos); |
|
1916 // Implementation using the following core algorithm: |
|
1917 // |
|
1918 // int binary_search(int key, LookupswitchPair* array, int n) { |
|
1919 // // Binary search according to "Methodik des Programmierens" by |
|
1920 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985. |
|
1921 // int i = 0; |
|
1922 // int j = n; |
|
1923 // while (i+1 < j) { |
|
1924 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q) |
|
1925 // // with Q: for all i: 0 <= i < n: key < a[i] |
|
1926 // // where a stands for the array and assuming that the (inexisting) |
|
1927 // // element a[n] is infinitely big. |
|
1928 // int h = (i + j) >> 1; |
|
1929 // // i < h < j |
|
1930 // if (key < array[h].fast_match()) { |
|
1931 // j = h; |
|
1932 // } else { |
|
1933 // i = h; |
|
1934 // } |
|
1935 // } |
|
1936 // // R: a[i] <= key < a[i+1] or Q |
|
1937 // // (i.e., if key is within array, i is the correct index) |
|
1938 // return i; |
|
1939 // } |
|
1940 |
|
1941 // register allocation |
|
1942 const Register key = rax; // already set (tosca) |
|
1943 const Register array = rbx; |
|
1944 const Register i = rcx; |
|
1945 const Register j = rdx; |
|
1946 const Register h = rdi; // needs to be restored |
|
1947 const Register temp = rsi; |
|
1948 // setup array |
|
1949 __ save_bcp(); |
|
1950 |
|
1951 __ lea(array, at_bcp(3*wordSize)); // btw: should be able to get rid of this instruction (change offsets below) |
|
1952 __ andptr(array, -wordSize); |
|
1953 // initialize i & j |
|
1954 __ xorl(i, i); // i = 0; |
|
1955 __ movl(j, Address(array, -wordSize)); // j = length(array); |
|
1956 // Convert j into native byteordering |
|
1957 __ bswapl(j); |
|
1958 // and start |
|
1959 Label entry; |
|
1960 __ jmp(entry); |
|
1961 |
|
1962 // binary search loop |
|
1963 { Label loop; |
|
1964 __ bind(loop); |
|
1965 // int h = (i + j) >> 1; |
|
1966 __ leal(h, Address(i, j, Address::times_1)); // h = i + j; |
|
1967 __ sarl(h, 1); // h = (i + j) >> 1; |
|
1968 // if (key < array[h].fast_match()) { |
|
1969 // j = h; |
|
1970 // } else { |
|
1971 // i = h; |
|
1972 // } |
|
1973 // Convert array[h].match to native byte-ordering before compare |
|
1974 __ movl(temp, Address(array, h, Address::times_8, 0*wordSize)); |
|
1975 __ bswapl(temp); |
|
1976 __ cmpl(key, temp); |
|
1977 // j = h if (key < array[h].fast_match()) |
|
1978 __ cmov32(Assembler::less , j, h); |
|
1979 // i = h if (key >= array[h].fast_match()) |
|
1980 __ cmov32(Assembler::greaterEqual, i, h); |
|
1981 // while (i+1 < j) |
|
1982 __ bind(entry); |
|
1983 __ leal(h, Address(i, 1)); // i+1 |
|
1984 __ cmpl(h, j); // i+1 < j |
|
1985 __ jcc(Assembler::less, loop); |
|
1986 } |
|
1987 |
|
1988 // end of binary search, result index is i (must check again!) |
|
1989 Label default_case; |
|
1990 // Convert array[i].match to native byte-ordering before compare |
|
1991 __ movl(temp, Address(array, i, Address::times_8, 0*wordSize)); |
|
1992 __ bswapl(temp); |
|
1993 __ cmpl(key, temp); |
|
1994 __ jcc(Assembler::notEqual, default_case); |
|
1995 |
|
1996 // entry found -> j = offset |
|
1997 __ movl(j , Address(array, i, Address::times_8, 1*wordSize)); |
|
1998 __ profile_switch_case(i, key, array); |
|
1999 __ bswapl(j); |
|
2000 LP64_ONLY(__ movslq(j, j)); |
|
2001 __ restore_bcp(); |
|
2002 __ restore_locals(); // restore rdi |
|
2003 __ load_unsigned_byte(rbx, Address(rsi, j, Address::times_1)); |
|
2004 |
|
2005 __ addptr(rsi, j); |
|
2006 __ dispatch_only(vtos); |
|
2007 |
|
2008 // default case -> j = default offset |
|
2009 __ bind(default_case); |
|
2010 __ profile_switch_default(i); |
|
2011 __ movl(j, Address(array, -2*wordSize)); |
|
2012 __ bswapl(j); |
|
2013 LP64_ONLY(__ movslq(j, j)); |
|
2014 __ restore_bcp(); |
|
2015 __ restore_locals(); // restore rdi |
|
2016 __ load_unsigned_byte(rbx, Address(rsi, j, Address::times_1)); |
|
2017 __ addptr(rsi, j); |
|
2018 __ dispatch_only(vtos); |
|
2019 } |
|
2020 |
|
2021 |
|
2022 void TemplateTable::_return(TosState state) { |
|
2023 transition(state, state); |
|
2024 assert(_desc->calls_vm(), "inconsistent calls_vm information"); // call in remove_activation |
|
2025 |
|
2026 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) { |
|
2027 assert(state == vtos, "only valid state"); |
|
2028 __ movptr(rax, aaddress(0)); |
|
2029 __ load_klass(rdi, rax); |
|
2030 __ movl(rdi, Address(rdi, Klass::access_flags_offset())); |
|
2031 __ testl(rdi, JVM_ACC_HAS_FINALIZER); |
|
2032 Label skip_register_finalizer; |
|
2033 __ jcc(Assembler::zero, skip_register_finalizer); |
|
2034 |
|
2035 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), rax); |
|
2036 |
|
2037 __ bind(skip_register_finalizer); |
|
2038 } |
|
2039 |
|
2040 __ remove_activation(state, rsi); |
|
2041 __ jmp(rsi); |
|
2042 } |
|
2043 |
|
2044 |
|
2045 // ---------------------------------------------------------------------------- |
|
2046 // Volatile variables demand their effects be made known to all CPU's in |
|
2047 // order. Store buffers on most chips allow reads & writes to reorder; the |
|
2048 // JMM's ReadAfterWrite.java test fails in -Xint mode without some kind of |
|
2049 // memory barrier (i.e., it's not sufficient that the interpreter does not |
|
2050 // reorder volatile references, the hardware also must not reorder them). |
|
2051 // |
|
2052 // According to the new Java Memory Model (JMM): |
|
2053 // (1) All volatiles are serialized wrt to each other. |
|
2054 // ALSO reads & writes act as aquire & release, so: |
|
2055 // (2) A read cannot let unrelated NON-volatile memory refs that happen after |
|
2056 // the read float up to before the read. It's OK for non-volatile memory refs |
|
2057 // that happen before the volatile read to float down below it. |
|
2058 // (3) Similar a volatile write cannot let unrelated NON-volatile memory refs |
|
2059 // that happen BEFORE the write float down to after the write. It's OK for |
|
2060 // non-volatile memory refs that happen after the volatile write to float up |
|
2061 // before it. |
|
2062 // |
|
2063 // We only put in barriers around volatile refs (they are expensive), not |
|
2064 // _between_ memory refs (that would require us to track the flavor of the |
|
2065 // previous memory refs). Requirements (2) and (3) require some barriers |
|
2066 // before volatile stores and after volatile loads. These nearly cover |
|
2067 // requirement (1) but miss the volatile-store-volatile-load case. This final |
|
2068 // case is placed after volatile-stores although it could just as well go |
|
2069 // before volatile-loads. |
|
2070 void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits order_constraint ) { |
|
2071 // Helper function to insert a is-volatile test and memory barrier |
|
2072 if( !os::is_MP() ) return; // Not needed on single CPU |
|
2073 __ membar(order_constraint); |
|
2074 } |
|
2075 |
|
2076 void TemplateTable::resolve_cache_and_index(int byte_no, |
|
2077 Register Rcache, |
|
2078 Register index, |
|
2079 size_t index_size) { |
|
2080 const Register temp = rbx; |
|
2081 assert_different_registers(Rcache, index, temp); |
|
2082 |
|
2083 Label resolved; |
|
2084 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range"); |
|
2085 __ get_cache_and_index_and_bytecode_at_bcp(Rcache, index, temp, byte_no, 1, index_size); |
|
2086 __ cmpl(temp, (int) bytecode()); // have we resolved this bytecode? |
|
2087 __ jcc(Assembler::equal, resolved); |
|
2088 |
|
2089 // resolve first time through |
|
2090 address entry; |
|
2091 switch (bytecode()) { |
|
2092 case Bytecodes::_getstatic : // fall through |
|
2093 case Bytecodes::_putstatic : // fall through |
|
2094 case Bytecodes::_getfield : // fall through |
|
2095 case Bytecodes::_putfield : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); break; |
|
2096 case Bytecodes::_invokevirtual : // fall through |
|
2097 case Bytecodes::_invokespecial : // fall through |
|
2098 case Bytecodes::_invokestatic : // fall through |
|
2099 case Bytecodes::_invokeinterface: entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); break; |
|
2100 case Bytecodes::_invokehandle : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokehandle); break; |
|
2101 case Bytecodes::_invokedynamic : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); break; |
|
2102 default: |
|
2103 fatal(err_msg("unexpected bytecode: %s", Bytecodes::name(bytecode()))); |
|
2104 break; |
|
2105 } |
|
2106 __ movl(temp, (int)bytecode()); |
|
2107 __ call_VM(noreg, entry, temp); |
|
2108 // Update registers with resolved info |
|
2109 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size); |
|
2110 __ bind(resolved); |
|
2111 } |
|
2112 |
|
2113 |
|
2114 // The cache and index registers must be set before call |
|
2115 void TemplateTable::load_field_cp_cache_entry(Register obj, |
|
2116 Register cache, |
|
2117 Register index, |
|
2118 Register off, |
|
2119 Register flags, |
|
2120 bool is_static = false) { |
|
2121 assert_different_registers(cache, index, flags, off); |
|
2122 |
|
2123 ByteSize cp_base_offset = ConstantPoolCache::base_offset(); |
|
2124 // Field offset |
|
2125 __ movptr(off, Address(cache, index, Address::times_ptr, |
|
2126 in_bytes(cp_base_offset + ConstantPoolCacheEntry::f2_offset()))); |
|
2127 // Flags |
|
2128 __ movl(flags, Address(cache, index, Address::times_ptr, |
|
2129 in_bytes(cp_base_offset + ConstantPoolCacheEntry::flags_offset()))); |
|
2130 |
|
2131 // klass overwrite register |
|
2132 if (is_static) { |
|
2133 __ movptr(obj, Address(cache, index, Address::times_ptr, |
|
2134 in_bytes(cp_base_offset + ConstantPoolCacheEntry::f1_offset()))); |
|
2135 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
|
2136 __ movptr(obj, Address(obj, mirror_offset)); |
|
2137 } |
|
2138 } |
|
2139 |
|
2140 void TemplateTable::load_invoke_cp_cache_entry(int byte_no, |
|
2141 Register method, |
|
2142 Register itable_index, |
|
2143 Register flags, |
|
2144 bool is_invokevirtual, |
|
2145 bool is_invokevfinal, /*unused*/ |
|
2146 bool is_invokedynamic) { |
|
2147 // setup registers |
|
2148 const Register cache = rcx; |
|
2149 const Register index = rdx; |
|
2150 assert_different_registers(method, flags); |
|
2151 assert_different_registers(method, cache, index); |
|
2152 assert_different_registers(itable_index, flags); |
|
2153 assert_different_registers(itable_index, cache, index); |
|
2154 // determine constant pool cache field offsets |
|
2155 assert(is_invokevirtual == (byte_no == f2_byte), "is_invokevirtual flag redundant"); |
|
2156 const int method_offset = in_bytes( |
|
2157 ConstantPoolCache::base_offset() + |
|
2158 ((byte_no == f2_byte) |
|
2159 ? ConstantPoolCacheEntry::f2_offset() |
|
2160 : ConstantPoolCacheEntry::f1_offset())); |
|
2161 const int flags_offset = in_bytes(ConstantPoolCache::base_offset() + |
|
2162 ConstantPoolCacheEntry::flags_offset()); |
|
2163 // access constant pool cache fields |
|
2164 const int index_offset = in_bytes(ConstantPoolCache::base_offset() + |
|
2165 ConstantPoolCacheEntry::f2_offset()); |
|
2166 |
|
2167 size_t index_size = (is_invokedynamic ? sizeof(u4) : sizeof(u2)); |
|
2168 resolve_cache_and_index(byte_no, cache, index, index_size); |
|
2169 __ movptr(method, Address(cache, index, Address::times_ptr, method_offset)); |
|
2170 |
|
2171 if (itable_index != noreg) { |
|
2172 __ movptr(itable_index, Address(cache, index, Address::times_ptr, index_offset)); |
|
2173 } |
|
2174 __ movl(flags, Address(cache, index, Address::times_ptr, flags_offset)); |
|
2175 } |
|
2176 |
|
2177 |
|
2178 // The registers cache and index expected to be set before call. |
|
2179 // Correct values of the cache and index registers are preserved. |
|
2180 void TemplateTable::jvmti_post_field_access(Register cache, |
|
2181 Register index, |
|
2182 bool is_static, |
|
2183 bool has_tos) { |
|
2184 if (JvmtiExport::can_post_field_access()) { |
|
2185 // Check to see if a field access watch has been set before we take |
|
2186 // the time to call into the VM. |
|
2187 Label L1; |
|
2188 assert_different_registers(cache, index, rax); |
|
2189 __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); |
|
2190 __ testl(rax,rax); |
|
2191 __ jcc(Assembler::zero, L1); |
|
2192 |
|
2193 // cache entry pointer |
|
2194 __ addptr(cache, in_bytes(ConstantPoolCache::base_offset())); |
|
2195 __ shll(index, LogBytesPerWord); |
|
2196 __ addptr(cache, index); |
|
2197 if (is_static) { |
|
2198 __ xorptr(rax, rax); // NULL object reference |
|
2199 } else { |
|
2200 __ pop(atos); // Get the object |
|
2201 __ verify_oop(rax); |
|
2202 __ push(atos); // Restore stack state |
|
2203 } |
|
2204 // rax,: object pointer or NULL |
|
2205 // cache: cache entry pointer |
|
2206 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), |
|
2207 rax, cache); |
|
2208 __ get_cache_and_index_at_bcp(cache, index, 1); |
|
2209 __ bind(L1); |
|
2210 } |
|
2211 } |
|
2212 |
|
2213 void TemplateTable::pop_and_check_object(Register r) { |
|
2214 __ pop_ptr(r); |
|
2215 __ null_check(r); // for field access must check obj. |
|
2216 __ verify_oop(r); |
|
2217 } |
|
2218 |
|
2219 void TemplateTable::getfield_or_static(int byte_no, bool is_static) { |
|
2220 transition(vtos, vtos); |
|
2221 |
|
2222 const Register cache = rcx; |
|
2223 const Register index = rdx; |
|
2224 const Register obj = rcx; |
|
2225 const Register off = rbx; |
|
2226 const Register flags = rax; |
|
2227 |
|
2228 resolve_cache_and_index(byte_no, cache, index, sizeof(u2)); |
|
2229 jvmti_post_field_access(cache, index, is_static, false); |
|
2230 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); |
|
2231 |
|
2232 if (!is_static) pop_and_check_object(obj); |
|
2233 |
|
2234 const Address lo(obj, off, Address::times_1, 0*wordSize); |
|
2235 const Address hi(obj, off, Address::times_1, 1*wordSize); |
|
2236 |
|
2237 Label Done, notByte, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble; |
|
2238 |
|
2239 __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift); |
|
2240 assert(btos == 0, "change code, btos != 0"); |
|
2241 // btos |
|
2242 __ andptr(flags, ConstantPoolCacheEntry::tos_state_mask); |
|
2243 __ jcc(Assembler::notZero, notByte); |
|
2244 |
|
2245 __ load_signed_byte(rax, lo ); |
|
2246 __ push(btos); |
|
2247 // Rewrite bytecode to be faster |
|
2248 if (!is_static) { |
|
2249 patch_bytecode(Bytecodes::_fast_bgetfield, rcx, rbx); |
|
2250 } |
|
2251 __ jmp(Done); |
|
2252 |
|
2253 __ bind(notByte); |
|
2254 // itos |
|
2255 __ cmpl(flags, itos ); |
|
2256 __ jcc(Assembler::notEqual, notInt); |
|
2257 |
|
2258 __ movl(rax, lo ); |
|
2259 __ push(itos); |
|
2260 // Rewrite bytecode to be faster |
|
2261 if (!is_static) { |
|
2262 patch_bytecode(Bytecodes::_fast_igetfield, rcx, rbx); |
|
2263 } |
|
2264 __ jmp(Done); |
|
2265 |
|
2266 __ bind(notInt); |
|
2267 // atos |
|
2268 __ cmpl(flags, atos ); |
|
2269 __ jcc(Assembler::notEqual, notObj); |
|
2270 |
|
2271 __ movl(rax, lo ); |
|
2272 __ push(atos); |
|
2273 if (!is_static) { |
|
2274 patch_bytecode(Bytecodes::_fast_agetfield, rcx, rbx); |
|
2275 } |
|
2276 __ jmp(Done); |
|
2277 |
|
2278 __ bind(notObj); |
|
2279 // ctos |
|
2280 __ cmpl(flags, ctos ); |
|
2281 __ jcc(Assembler::notEqual, notChar); |
|
2282 |
|
2283 __ load_unsigned_short(rax, lo ); |
|
2284 __ push(ctos); |
|
2285 if (!is_static) { |
|
2286 patch_bytecode(Bytecodes::_fast_cgetfield, rcx, rbx); |
|
2287 } |
|
2288 __ jmp(Done); |
|
2289 |
|
2290 __ bind(notChar); |
|
2291 // stos |
|
2292 __ cmpl(flags, stos ); |
|
2293 __ jcc(Assembler::notEqual, notShort); |
|
2294 |
|
2295 __ load_signed_short(rax, lo ); |
|
2296 __ push(stos); |
|
2297 if (!is_static) { |
|
2298 patch_bytecode(Bytecodes::_fast_sgetfield, rcx, rbx); |
|
2299 } |
|
2300 __ jmp(Done); |
|
2301 |
|
2302 __ bind(notShort); |
|
2303 // ltos |
|
2304 __ cmpl(flags, ltos ); |
|
2305 __ jcc(Assembler::notEqual, notLong); |
|
2306 |
|
2307 // Generate code as if volatile. There just aren't enough registers to |
|
2308 // save that information and this code is faster than the test. |
|
2309 __ fild_d(lo); // Must load atomically |
|
2310 __ subptr(rsp,2*wordSize); // Make space for store |
|
2311 __ fistp_d(Address(rsp,0)); |
|
2312 __ pop(rax); |
|
2313 __ pop(rdx); |
|
2314 |
|
2315 __ push(ltos); |
|
2316 // Don't rewrite to _fast_lgetfield for potential volatile case. |
|
2317 __ jmp(Done); |
|
2318 |
|
2319 __ bind(notLong); |
|
2320 // ftos |
|
2321 __ cmpl(flags, ftos ); |
|
2322 __ jcc(Assembler::notEqual, notFloat); |
|
2323 |
|
2324 __ fld_s(lo); |
|
2325 __ push(ftos); |
|
2326 if (!is_static) { |
|
2327 patch_bytecode(Bytecodes::_fast_fgetfield, rcx, rbx); |
|
2328 } |
|
2329 __ jmp(Done); |
|
2330 |
|
2331 __ bind(notFloat); |
|
2332 // dtos |
|
2333 __ cmpl(flags, dtos ); |
|
2334 __ jcc(Assembler::notEqual, notDouble); |
|
2335 |
|
2336 __ fld_d(lo); |
|
2337 __ push(dtos); |
|
2338 if (!is_static) { |
|
2339 patch_bytecode(Bytecodes::_fast_dgetfield, rcx, rbx); |
|
2340 } |
|
2341 __ jmpb(Done); |
|
2342 |
|
2343 __ bind(notDouble); |
|
2344 |
|
2345 __ stop("Bad state"); |
|
2346 |
|
2347 __ bind(Done); |
|
2348 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). |
|
2349 // volatile_barrier( ); |
|
2350 } |
|
2351 |
|
2352 |
|
2353 void TemplateTable::getfield(int byte_no) { |
|
2354 getfield_or_static(byte_no, false); |
|
2355 } |
|
2356 |
|
2357 |
|
2358 void TemplateTable::getstatic(int byte_no) { |
|
2359 getfield_or_static(byte_no, true); |
|
2360 } |
|
2361 |
|
2362 // The registers cache and index expected to be set before call. |
|
2363 // The function may destroy various registers, just not the cache and index registers. |
|
2364 void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) { |
|
2365 |
|
2366 ByteSize cp_base_offset = ConstantPoolCache::base_offset(); |
|
2367 |
|
2368 if (JvmtiExport::can_post_field_modification()) { |
|
2369 // Check to see if a field modification watch has been set before we take |
|
2370 // the time to call into the VM. |
|
2371 Label L1; |
|
2372 assert_different_registers(cache, index, rax); |
|
2373 __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); |
|
2374 __ testl(rax, rax); |
|
2375 __ jcc(Assembler::zero, L1); |
|
2376 |
|
2377 // The cache and index registers have been already set. |
|
2378 // This allows to eliminate this call but the cache and index |
|
2379 // registers have to be correspondingly used after this line. |
|
2380 __ get_cache_and_index_at_bcp(rax, rdx, 1); |
|
2381 |
|
2382 if (is_static) { |
|
2383 // Life is simple. Null out the object pointer. |
|
2384 __ xorptr(rbx, rbx); |
|
2385 } else { |
|
2386 // Life is harder. The stack holds the value on top, followed by the object. |
|
2387 // We don't know the size of the value, though; it could be one or two words |
|
2388 // depending on its type. As a result, we must find the type to determine where |
|
2389 // the object is. |
|
2390 Label two_word, valsize_known; |
|
2391 __ movl(rcx, Address(rax, rdx, Address::times_ptr, in_bytes(cp_base_offset + |
|
2392 ConstantPoolCacheEntry::flags_offset()))); |
|
2393 __ mov(rbx, rsp); |
|
2394 __ shrl(rcx, ConstantPoolCacheEntry::tos_state_shift); |
|
2395 // Make sure we don't need to mask rcx after the above shift |
|
2396 ConstantPoolCacheEntry::verify_tos_state_shift(); |
|
2397 __ cmpl(rcx, ltos); |
|
2398 __ jccb(Assembler::equal, two_word); |
|
2399 __ cmpl(rcx, dtos); |
|
2400 __ jccb(Assembler::equal, two_word); |
|
2401 __ addptr(rbx, Interpreter::expr_offset_in_bytes(1)); // one word jvalue (not ltos, dtos) |
|
2402 __ jmpb(valsize_known); |
|
2403 |
|
2404 __ bind(two_word); |
|
2405 __ addptr(rbx, Interpreter::expr_offset_in_bytes(2)); // two words jvalue |
|
2406 |
|
2407 __ bind(valsize_known); |
|
2408 // setup object pointer |
|
2409 __ movptr(rbx, Address(rbx, 0)); |
|
2410 } |
|
2411 // cache entry pointer |
|
2412 __ addptr(rax, in_bytes(cp_base_offset)); |
|
2413 __ shll(rdx, LogBytesPerWord); |
|
2414 __ addptr(rax, rdx); |
|
2415 // object (tos) |
|
2416 __ mov(rcx, rsp); |
|
2417 // rbx,: object pointer set up above (NULL if static) |
|
2418 // rax,: cache entry pointer |
|
2419 // rcx: jvalue object on the stack |
|
2420 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), |
|
2421 rbx, rax, rcx); |
|
2422 __ get_cache_and_index_at_bcp(cache, index, 1); |
|
2423 __ bind(L1); |
|
2424 } |
|
2425 } |
|
2426 |
|
2427 |
|
2428 void TemplateTable::putfield_or_static(int byte_no, bool is_static) { |
|
2429 transition(vtos, vtos); |
|
2430 |
|
2431 const Register cache = rcx; |
|
2432 const Register index = rdx; |
|
2433 const Register obj = rcx; |
|
2434 const Register off = rbx; |
|
2435 const Register flags = rax; |
|
2436 |
|
2437 resolve_cache_and_index(byte_no, cache, index, sizeof(u2)); |
|
2438 jvmti_post_field_mod(cache, index, is_static); |
|
2439 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); |
|
2440 |
|
2441 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). |
|
2442 // volatile_barrier( ); |
|
2443 |
|
2444 Label notVolatile, Done; |
|
2445 __ movl(rdx, flags); |
|
2446 __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift); |
|
2447 __ andl(rdx, 0x1); |
|
2448 |
|
2449 // field addresses |
|
2450 const Address lo(obj, off, Address::times_1, 0*wordSize); |
|
2451 const Address hi(obj, off, Address::times_1, 1*wordSize); |
|
2452 |
|
2453 Label notByte, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble; |
|
2454 |
|
2455 __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift); |
|
2456 assert(btos == 0, "change code, btos != 0"); |
|
2457 __ andl(flags, ConstantPoolCacheEntry::tos_state_mask); |
|
2458 __ jcc(Assembler::notZero, notByte); |
|
2459 |
|
2460 // btos |
|
2461 { |
|
2462 __ pop(btos); |
|
2463 if (!is_static) pop_and_check_object(obj); |
|
2464 __ movb(lo, rax); |
|
2465 if (!is_static) { |
|
2466 patch_bytecode(Bytecodes::_fast_bputfield, rcx, rbx, true, byte_no); |
|
2467 } |
|
2468 __ jmp(Done); |
|
2469 } |
|
2470 |
|
2471 __ bind(notByte); |
|
2472 __ cmpl(flags, itos); |
|
2473 __ jcc(Assembler::notEqual, notInt); |
|
2474 |
|
2475 // itos |
|
2476 { |
|
2477 __ pop(itos); |
|
2478 if (!is_static) pop_and_check_object(obj); |
|
2479 __ movl(lo, rax); |
|
2480 if (!is_static) { |
|
2481 patch_bytecode(Bytecodes::_fast_iputfield, rcx, rbx, true, byte_no); |
|
2482 } |
|
2483 __ jmp(Done); |
|
2484 } |
|
2485 |
|
2486 __ bind(notInt); |
|
2487 __ cmpl(flags, atos); |
|
2488 __ jcc(Assembler::notEqual, notObj); |
|
2489 |
|
2490 // atos |
|
2491 { |
|
2492 __ pop(atos); |
|
2493 if (!is_static) pop_and_check_object(obj); |
|
2494 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
|
2495 if (!is_static) { |
|
2496 patch_bytecode(Bytecodes::_fast_aputfield, rcx, rbx, true, byte_no); |
|
2497 } |
|
2498 __ jmp(Done); |
|
2499 } |
|
2500 |
|
2501 __ bind(notObj); |
|
2502 __ cmpl(flags, ctos); |
|
2503 __ jcc(Assembler::notEqual, notChar); |
|
2504 |
|
2505 // ctos |
|
2506 { |
|
2507 __ pop(ctos); |
|
2508 if (!is_static) pop_and_check_object(obj); |
|
2509 __ movw(lo, rax); |
|
2510 if (!is_static) { |
|
2511 patch_bytecode(Bytecodes::_fast_cputfield, rcx, rbx, true, byte_no); |
|
2512 } |
|
2513 __ jmp(Done); |
|
2514 } |
|
2515 |
|
2516 __ bind(notChar); |
|
2517 __ cmpl(flags, stos); |
|
2518 __ jcc(Assembler::notEqual, notShort); |
|
2519 |
|
2520 // stos |
|
2521 { |
|
2522 __ pop(stos); |
|
2523 if (!is_static) pop_and_check_object(obj); |
|
2524 __ movw(lo, rax); |
|
2525 if (!is_static) { |
|
2526 patch_bytecode(Bytecodes::_fast_sputfield, rcx, rbx, true, byte_no); |
|
2527 } |
|
2528 __ jmp(Done); |
|
2529 } |
|
2530 |
|
2531 __ bind(notShort); |
|
2532 __ cmpl(flags, ltos); |
|
2533 __ jcc(Assembler::notEqual, notLong); |
|
2534 |
|
2535 // ltos |
|
2536 { |
|
2537 Label notVolatileLong; |
|
2538 __ testl(rdx, rdx); |
|
2539 __ jcc(Assembler::zero, notVolatileLong); |
|
2540 |
|
2541 __ pop(ltos); // overwrites rdx, do this after testing volatile. |
|
2542 if (!is_static) pop_and_check_object(obj); |
|
2543 |
|
2544 // Replace with real volatile test |
|
2545 __ push(rdx); |
|
2546 __ push(rax); // Must update atomically with FIST |
|
2547 __ fild_d(Address(rsp,0)); // So load into FPU register |
|
2548 __ fistp_d(lo); // and put into memory atomically |
|
2549 __ addptr(rsp, 2*wordSize); |
|
2550 // volatile_barrier(); |
|
2551 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
|
2552 Assembler::StoreStore)); |
|
2553 // Don't rewrite volatile version |
|
2554 __ jmp(notVolatile); |
|
2555 |
|
2556 __ bind(notVolatileLong); |
|
2557 |
|
2558 __ pop(ltos); // overwrites rdx |
|
2559 if (!is_static) pop_and_check_object(obj); |
|
2560 NOT_LP64(__ movptr(hi, rdx)); |
|
2561 __ movptr(lo, rax); |
|
2562 if (!is_static) { |
|
2563 patch_bytecode(Bytecodes::_fast_lputfield, rcx, rbx, true, byte_no); |
|
2564 } |
|
2565 __ jmp(notVolatile); |
|
2566 } |
|
2567 |
|
2568 __ bind(notLong); |
|
2569 __ cmpl(flags, ftos); |
|
2570 __ jcc(Assembler::notEqual, notFloat); |
|
2571 |
|
2572 // ftos |
|
2573 { |
|
2574 __ pop(ftos); |
|
2575 if (!is_static) pop_and_check_object(obj); |
|
2576 __ fstp_s(lo); |
|
2577 if (!is_static) { |
|
2578 patch_bytecode(Bytecodes::_fast_fputfield, rcx, rbx, true, byte_no); |
|
2579 } |
|
2580 __ jmp(Done); |
|
2581 } |
|
2582 |
|
2583 __ bind(notFloat); |
|
2584 #ifdef ASSERT |
|
2585 __ cmpl(flags, dtos); |
|
2586 __ jcc(Assembler::notEqual, notDouble); |
|
2587 #endif |
|
2588 |
|
2589 // dtos |
|
2590 { |
|
2591 __ pop(dtos); |
|
2592 if (!is_static) pop_and_check_object(obj); |
|
2593 __ fstp_d(lo); |
|
2594 if (!is_static) { |
|
2595 patch_bytecode(Bytecodes::_fast_dputfield, rcx, rbx, true, byte_no); |
|
2596 } |
|
2597 __ jmp(Done); |
|
2598 } |
|
2599 |
|
2600 #ifdef ASSERT |
|
2601 __ bind(notDouble); |
|
2602 __ stop("Bad state"); |
|
2603 #endif |
|
2604 |
|
2605 __ bind(Done); |
|
2606 |
|
2607 // Check for volatile store |
|
2608 __ testl(rdx, rdx); |
|
2609 __ jcc(Assembler::zero, notVolatile); |
|
2610 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
|
2611 Assembler::StoreStore)); |
|
2612 __ bind(notVolatile); |
|
2613 } |
|
2614 |
|
2615 |
|
2616 void TemplateTable::putfield(int byte_no) { |
|
2617 putfield_or_static(byte_no, false); |
|
2618 } |
|
2619 |
|
2620 |
|
2621 void TemplateTable::putstatic(int byte_no) { |
|
2622 putfield_or_static(byte_no, true); |
|
2623 } |
|
2624 |
|
2625 void TemplateTable::jvmti_post_fast_field_mod() { |
|
2626 if (JvmtiExport::can_post_field_modification()) { |
|
2627 // Check to see if a field modification watch has been set before we take |
|
2628 // the time to call into the VM. |
|
2629 Label L2; |
|
2630 __ mov32(rcx, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); |
|
2631 __ testl(rcx,rcx); |
|
2632 __ jcc(Assembler::zero, L2); |
|
2633 __ pop_ptr(rbx); // copy the object pointer from tos |
|
2634 __ verify_oop(rbx); |
|
2635 __ push_ptr(rbx); // put the object pointer back on tos |
|
2636 |
|
2637 // Save tos values before call_VM() clobbers them. Since we have |
|
2638 // to do it for every data type, we use the saved values as the |
|
2639 // jvalue object. |
|
2640 switch (bytecode()) { // load values into the jvalue object |
|
2641 case Bytecodes::_fast_aputfield: __ push_ptr(rax); break; |
|
2642 case Bytecodes::_fast_bputfield: // fall through |
|
2643 case Bytecodes::_fast_sputfield: // fall through |
|
2644 case Bytecodes::_fast_cputfield: // fall through |
|
2645 case Bytecodes::_fast_iputfield: __ push_i(rax); break; |
|
2646 case Bytecodes::_fast_dputfield: __ push_d(); break; |
|
2647 case Bytecodes::_fast_fputfield: __ push_f(); break; |
|
2648 case Bytecodes::_fast_lputfield: __ push_l(rax); break; |
|
2649 |
|
2650 default: |
|
2651 ShouldNotReachHere(); |
|
2652 } |
|
2653 __ mov(rcx, rsp); // points to jvalue on the stack |
|
2654 // access constant pool cache entry |
|
2655 __ get_cache_entry_pointer_at_bcp(rax, rdx, 1); |
|
2656 __ verify_oop(rbx); |
|
2657 // rbx,: object pointer copied above |
|
2658 // rax,: cache entry pointer |
|
2659 // rcx: jvalue object on the stack |
|
2660 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), rbx, rax, rcx); |
|
2661 |
|
2662 switch (bytecode()) { // restore tos values |
|
2663 case Bytecodes::_fast_aputfield: __ pop_ptr(rax); break; |
|
2664 case Bytecodes::_fast_bputfield: // fall through |
|
2665 case Bytecodes::_fast_sputfield: // fall through |
|
2666 case Bytecodes::_fast_cputfield: // fall through |
|
2667 case Bytecodes::_fast_iputfield: __ pop_i(rax); break; |
|
2668 case Bytecodes::_fast_dputfield: __ pop_d(); break; |
|
2669 case Bytecodes::_fast_fputfield: __ pop_f(); break; |
|
2670 case Bytecodes::_fast_lputfield: __ pop_l(rax); break; |
|
2671 } |
|
2672 __ bind(L2); |
|
2673 } |
|
2674 } |
|
2675 |
|
2676 void TemplateTable::fast_storefield(TosState state) { |
|
2677 transition(state, vtos); |
|
2678 |
|
2679 ByteSize base = ConstantPoolCache::base_offset(); |
|
2680 |
|
2681 jvmti_post_fast_field_mod(); |
|
2682 |
|
2683 // access constant pool cache |
|
2684 __ get_cache_and_index_at_bcp(rcx, rbx, 1); |
|
2685 |
|
2686 // test for volatile with rdx but rdx is tos register for lputfield. |
|
2687 if (bytecode() == Bytecodes::_fast_lputfield) __ push(rdx); |
|
2688 __ movl(rdx, Address(rcx, rbx, Address::times_ptr, in_bytes(base + |
|
2689 ConstantPoolCacheEntry::flags_offset()))); |
|
2690 |
|
2691 // replace index with field offset from cache entry |
|
2692 __ movptr(rbx, Address(rcx, rbx, Address::times_ptr, in_bytes(base + ConstantPoolCacheEntry::f2_offset()))); |
|
2693 |
|
2694 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). |
|
2695 // volatile_barrier( ); |
|
2696 |
|
2697 Label notVolatile, Done; |
|
2698 __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift); |
|
2699 __ andl(rdx, 0x1); |
|
2700 // Check for volatile store |
|
2701 __ testl(rdx, rdx); |
|
2702 __ jcc(Assembler::zero, notVolatile); |
|
2703 |
|
2704 if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx); |
|
2705 |
|
2706 // Get object from stack |
|
2707 pop_and_check_object(rcx); |
|
2708 |
|
2709 // field addresses |
|
2710 const Address lo(rcx, rbx, Address::times_1, 0*wordSize); |
|
2711 const Address hi(rcx, rbx, Address::times_1, 1*wordSize); |
|
2712 |
|
2713 // access field |
|
2714 switch (bytecode()) { |
|
2715 case Bytecodes::_fast_bputfield: __ movb(lo, rax); break; |
|
2716 case Bytecodes::_fast_sputfield: // fall through |
|
2717 case Bytecodes::_fast_cputfield: __ movw(lo, rax); break; |
|
2718 case Bytecodes::_fast_iputfield: __ movl(lo, rax); break; |
|
2719 case Bytecodes::_fast_lputfield: |
|
2720 NOT_LP64(__ movptr(hi, rdx)); |
|
2721 __ movptr(lo, rax); |
|
2722 break; |
|
2723 case Bytecodes::_fast_fputfield: __ fstp_s(lo); break; |
|
2724 case Bytecodes::_fast_dputfield: __ fstp_d(lo); break; |
|
2725 case Bytecodes::_fast_aputfield: { |
|
2726 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
|
2727 break; |
|
2728 } |
|
2729 default: |
|
2730 ShouldNotReachHere(); |
|
2731 } |
|
2732 |
|
2733 Label done; |
|
2734 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
|
2735 Assembler::StoreStore)); |
|
2736 // Barriers are so large that short branch doesn't reach! |
|
2737 __ jmp(done); |
|
2738 |
|
2739 // Same code as above, but don't need rdx to test for volatile. |
|
2740 __ bind(notVolatile); |
|
2741 |
|
2742 if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx); |
|
2743 |
|
2744 // Get object from stack |
|
2745 pop_and_check_object(rcx); |
|
2746 |
|
2747 // access field |
|
2748 switch (bytecode()) { |
|
2749 case Bytecodes::_fast_bputfield: __ movb(lo, rax); break; |
|
2750 case Bytecodes::_fast_sputfield: // fall through |
|
2751 case Bytecodes::_fast_cputfield: __ movw(lo, rax); break; |
|
2752 case Bytecodes::_fast_iputfield: __ movl(lo, rax); break; |
|
2753 case Bytecodes::_fast_lputfield: |
|
2754 NOT_LP64(__ movptr(hi, rdx)); |
|
2755 __ movptr(lo, rax); |
|
2756 break; |
|
2757 case Bytecodes::_fast_fputfield: __ fstp_s(lo); break; |
|
2758 case Bytecodes::_fast_dputfield: __ fstp_d(lo); break; |
|
2759 case Bytecodes::_fast_aputfield: { |
|
2760 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
|
2761 break; |
|
2762 } |
|
2763 default: |
|
2764 ShouldNotReachHere(); |
|
2765 } |
|
2766 __ bind(done); |
|
2767 } |
|
2768 |
|
2769 |
|
2770 void TemplateTable::fast_accessfield(TosState state) { |
|
2771 transition(atos, state); |
|
2772 |
|
2773 // do the JVMTI work here to avoid disturbing the register state below |
|
2774 if (JvmtiExport::can_post_field_access()) { |
|
2775 // Check to see if a field access watch has been set before we take |
|
2776 // the time to call into the VM. |
|
2777 Label L1; |
|
2778 __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); |
|
2779 __ testl(rcx,rcx); |
|
2780 __ jcc(Assembler::zero, L1); |
|
2781 // access constant pool cache entry |
|
2782 __ get_cache_entry_pointer_at_bcp(rcx, rdx, 1); |
|
2783 __ push_ptr(rax); // save object pointer before call_VM() clobbers it |
|
2784 __ verify_oop(rax); |
|
2785 // rax,: object pointer copied above |
|
2786 // rcx: cache entry pointer |
|
2787 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), rax, rcx); |
|
2788 __ pop_ptr(rax); // restore object pointer |
|
2789 __ bind(L1); |
|
2790 } |
|
2791 |
|
2792 // access constant pool cache |
|
2793 __ get_cache_and_index_at_bcp(rcx, rbx, 1); |
|
2794 // replace index with field offset from cache entry |
|
2795 __ movptr(rbx, Address(rcx, |
|
2796 rbx, |
|
2797 Address::times_ptr, |
|
2798 in_bytes(ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::f2_offset()))); |
|
2799 |
|
2800 |
|
2801 // rax,: object |
|
2802 __ verify_oop(rax); |
|
2803 __ null_check(rax); |
|
2804 // field addresses |
|
2805 const Address lo = Address(rax, rbx, Address::times_1, 0*wordSize); |
|
2806 const Address hi = Address(rax, rbx, Address::times_1, 1*wordSize); |
|
2807 |
|
2808 // access field |
|
2809 switch (bytecode()) { |
|
2810 case Bytecodes::_fast_bgetfield: __ movsbl(rax, lo ); break; |
|
2811 case Bytecodes::_fast_sgetfield: __ load_signed_short(rax, lo ); break; |
|
2812 case Bytecodes::_fast_cgetfield: __ load_unsigned_short(rax, lo ); break; |
|
2813 case Bytecodes::_fast_igetfield: __ movl(rax, lo); break; |
|
2814 case Bytecodes::_fast_lgetfield: __ stop("should not be rewritten"); break; |
|
2815 case Bytecodes::_fast_fgetfield: __ fld_s(lo); break; |
|
2816 case Bytecodes::_fast_dgetfield: __ fld_d(lo); break; |
|
2817 case Bytecodes::_fast_agetfield: __ movptr(rax, lo); __ verify_oop(rax); break; |
|
2818 default: |
|
2819 ShouldNotReachHere(); |
|
2820 } |
|
2821 |
|
2822 // Doug Lea believes this is not needed with current Sparcs(TSO) and Intel(PSO) |
|
2823 // volatile_barrier( ); |
|
2824 } |
|
2825 |
|
2826 void TemplateTable::fast_xaccess(TosState state) { |
|
2827 transition(vtos, state); |
|
2828 // get receiver |
|
2829 __ movptr(rax, aaddress(0)); |
|
2830 // access constant pool cache |
|
2831 __ get_cache_and_index_at_bcp(rcx, rdx, 2); |
|
2832 __ movptr(rbx, Address(rcx, |
|
2833 rdx, |
|
2834 Address::times_ptr, |
|
2835 in_bytes(ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::f2_offset()))); |
|
2836 // make sure exception is reported in correct bcp range (getfield is next instruction) |
|
2837 __ increment(rsi); |
|
2838 __ null_check(rax); |
|
2839 const Address lo = Address(rax, rbx, Address::times_1, 0*wordSize); |
|
2840 if (state == itos) { |
|
2841 __ movl(rax, lo); |
|
2842 } else if (state == atos) { |
|
2843 __ movptr(rax, lo); |
|
2844 __ verify_oop(rax); |
|
2845 } else if (state == ftos) { |
|
2846 __ fld_s(lo); |
|
2847 } else { |
|
2848 ShouldNotReachHere(); |
|
2849 } |
|
2850 __ decrement(rsi); |
|
2851 } |
|
2852 |
|
2853 |
|
2854 |
|
2855 //---------------------------------------------------------------------------------------------------- |
|
2856 // Calls |
|
2857 |
|
2858 void TemplateTable::count_calls(Register method, Register temp) { |
|
2859 // implemented elsewhere |
|
2860 ShouldNotReachHere(); |
|
2861 } |
|
2862 |
|
2863 |
|
2864 void TemplateTable::prepare_invoke(int byte_no, |
|
2865 Register method, // linked method (or i-klass) |
|
2866 Register index, // itable index, MethodType, etc. |
|
2867 Register recv, // if caller wants to see it |
|
2868 Register flags // if caller wants to test it |
|
2869 ) { |
|
2870 // determine flags |
|
2871 const Bytecodes::Code code = bytecode(); |
|
2872 const bool is_invokeinterface = code == Bytecodes::_invokeinterface; |
|
2873 const bool is_invokedynamic = code == Bytecodes::_invokedynamic; |
|
2874 const bool is_invokehandle = code == Bytecodes::_invokehandle; |
|
2875 const bool is_invokevirtual = code == Bytecodes::_invokevirtual; |
|
2876 const bool is_invokespecial = code == Bytecodes::_invokespecial; |
|
2877 const bool load_receiver = (recv != noreg); |
|
2878 const bool save_flags = (flags != noreg); |
|
2879 assert(load_receiver == (code != Bytecodes::_invokestatic && code != Bytecodes::_invokedynamic), ""); |
|
2880 assert(save_flags == (is_invokeinterface || is_invokevirtual), "need flags for vfinal"); |
|
2881 assert(flags == noreg || flags == rdx, ""); |
|
2882 assert(recv == noreg || recv == rcx, ""); |
|
2883 |
|
2884 // setup registers & access constant pool cache |
|
2885 if (recv == noreg) recv = rcx; |
|
2886 if (flags == noreg) flags = rdx; |
|
2887 assert_different_registers(method, index, recv, flags); |
|
2888 |
|
2889 // save 'interpreter return address' |
|
2890 __ save_bcp(); |
|
2891 |
|
2892 load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic); |
|
2893 |
|
2894 // maybe push appendix to arguments (just before return address) |
|
2895 if (is_invokedynamic || is_invokehandle) { |
|
2896 Label L_no_push; |
|
2897 __ testl(flags, (1 << ConstantPoolCacheEntry::has_appendix_shift)); |
|
2898 __ jccb(Assembler::zero, L_no_push); |
|
2899 // Push the appendix as a trailing parameter. |
|
2900 // This must be done before we get the receiver, |
|
2901 // since the parameter_size includes it. |
|
2902 __ push(rbx); |
|
2903 __ mov(rbx, index); |
|
2904 assert(ConstantPoolCacheEntry::_indy_resolved_references_appendix_offset == 0, "appendix expected at index+0"); |
|
2905 __ load_resolved_reference_at_index(index, rbx); |
|
2906 __ pop(rbx); |
|
2907 __ push(index); // push appendix (MethodType, CallSite, etc.) |
|
2908 __ bind(L_no_push); |
|
2909 } |
|
2910 |
|
2911 // load receiver if needed (note: no return address pushed yet) |
|
2912 if (load_receiver) { |
|
2913 __ movl(recv, flags); |
|
2914 __ andl(recv, ConstantPoolCacheEntry::parameter_size_mask); |
|
2915 const int no_return_pc_pushed_yet = -1; // argument slot correction before we push return address |
|
2916 const int receiver_is_at_end = -1; // back off one slot to get receiver |
|
2917 Address recv_addr = __ argument_address(recv, no_return_pc_pushed_yet + receiver_is_at_end); |
|
2918 __ movptr(recv, recv_addr); |
|
2919 __ verify_oop(recv); |
|
2920 } |
|
2921 |
|
2922 if (save_flags) { |
|
2923 __ mov(rsi, flags); |
|
2924 } |
|
2925 |
|
2926 // compute return type |
|
2927 __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift); |
|
2928 // Make sure we don't need to mask flags after the above shift |
|
2929 ConstantPoolCacheEntry::verify_tos_state_shift(); |
|
2930 // load return address |
|
2931 { |
|
2932 const address table_addr = (address) Interpreter::invoke_return_entry_table_for(code); |
|
2933 ExternalAddress table(table_addr); |
|
2934 __ movptr(flags, ArrayAddress(table, Address(noreg, flags, Address::times_ptr))); |
|
2935 } |
|
2936 |
|
2937 // push return address |
|
2938 __ push(flags); |
|
2939 |
|
2940 // Restore flags value from the constant pool cache, and restore rsi |
|
2941 // for later null checks. rsi is the bytecode pointer |
|
2942 if (save_flags) { |
|
2943 __ mov(flags, rsi); |
|
2944 __ restore_bcp(); |
|
2945 } |
|
2946 } |
|
2947 |
|
2948 |
|
2949 void TemplateTable::invokevirtual_helper(Register index, |
|
2950 Register recv, |
|
2951 Register flags) { |
|
2952 // Uses temporary registers rax, rdx |
|
2953 assert_different_registers(index, recv, rax, rdx); |
|
2954 assert(index == rbx, ""); |
|
2955 assert(recv == rcx, ""); |
|
2956 |
|
2957 // Test for an invoke of a final method |
|
2958 Label notFinal; |
|
2959 __ movl(rax, flags); |
|
2960 __ andl(rax, (1 << ConstantPoolCacheEntry::is_vfinal_shift)); |
|
2961 __ jcc(Assembler::zero, notFinal); |
|
2962 |
|
2963 const Register method = index; // method must be rbx |
|
2964 assert(method == rbx, |
|
2965 "Method* must be rbx for interpreter calling convention"); |
|
2966 |
|
2967 // do the call - the index is actually the method to call |
|
2968 // that is, f2 is a vtable index if !is_vfinal, else f2 is a Method* |
|
2969 |
|
2970 // It's final, need a null check here! |
|
2971 __ null_check(recv); |
|
2972 |
|
2973 // profile this call |
|
2974 __ profile_final_call(rax); |
|
2975 __ profile_arguments_type(rax, method, rsi, true); |
|
2976 |
|
2977 __ jump_from_interpreted(method, rax); |
|
2978 |
|
2979 __ bind(notFinal); |
|
2980 |
|
2981 // get receiver klass |
|
2982 __ null_check(recv, oopDesc::klass_offset_in_bytes()); |
|
2983 __ load_klass(rax, recv); |
|
2984 |
|
2985 // profile this call |
|
2986 __ profile_virtual_call(rax, rdi, rdx); |
|
2987 |
|
2988 // get target Method* & entry point |
|
2989 __ lookup_virtual_method(rax, index, method); |
|
2990 __ profile_arguments_type(rdx, method, rsi, true); |
|
2991 __ jump_from_interpreted(method, rdx); |
|
2992 } |
|
2993 |
|
2994 |
|
2995 void TemplateTable::invokevirtual(int byte_no) { |
|
2996 transition(vtos, vtos); |
|
2997 assert(byte_no == f2_byte, "use this argument"); |
|
2998 prepare_invoke(byte_no, |
|
2999 rbx, // method or vtable index |
|
3000 noreg, // unused itable index |
|
3001 rcx, rdx); // recv, flags |
|
3002 |
|
3003 // rbx: index |
|
3004 // rcx: receiver |
|
3005 // rdx: flags |
|
3006 |
|
3007 invokevirtual_helper(rbx, rcx, rdx); |
|
3008 } |
|
3009 |
|
3010 |
|
3011 void TemplateTable::invokespecial(int byte_no) { |
|
3012 transition(vtos, vtos); |
|
3013 assert(byte_no == f1_byte, "use this argument"); |
|
3014 prepare_invoke(byte_no, rbx, noreg, // get f1 Method* |
|
3015 rcx); // get receiver also for null check |
|
3016 __ verify_oop(rcx); |
|
3017 __ null_check(rcx); |
|
3018 // do the call |
|
3019 __ profile_call(rax); |
|
3020 __ profile_arguments_type(rax, rbx, rsi, false); |
|
3021 __ jump_from_interpreted(rbx, rax); |
|
3022 } |
|
3023 |
|
3024 |
|
3025 void TemplateTable::invokestatic(int byte_no) { |
|
3026 transition(vtos, vtos); |
|
3027 assert(byte_no == f1_byte, "use this argument"); |
|
3028 prepare_invoke(byte_no, rbx); // get f1 Method* |
|
3029 // do the call |
|
3030 __ profile_call(rax); |
|
3031 __ profile_arguments_type(rax, rbx, rsi, false); |
|
3032 __ jump_from_interpreted(rbx, rax); |
|
3033 } |
|
3034 |
|
3035 |
|
3036 void TemplateTable::fast_invokevfinal(int byte_no) { |
|
3037 transition(vtos, vtos); |
|
3038 assert(byte_no == f2_byte, "use this argument"); |
|
3039 __ stop("fast_invokevfinal not used on x86"); |
|
3040 } |
|
3041 |
|
3042 |
|
3043 void TemplateTable::invokeinterface(int byte_no) { |
|
3044 transition(vtos, vtos); |
|
3045 assert(byte_no == f1_byte, "use this argument"); |
|
3046 prepare_invoke(byte_no, rax, rbx, // get f1 Klass*, f2 itable index |
|
3047 rcx, rdx); // recv, flags |
|
3048 |
|
3049 // rax: interface klass (from f1) |
|
3050 // rbx: itable index (from f2) |
|
3051 // rcx: receiver |
|
3052 // rdx: flags |
|
3053 |
|
3054 // Special case of invokeinterface called for virtual method of |
|
3055 // java.lang.Object. See cpCacheOop.cpp for details. |
|
3056 // This code isn't produced by javac, but could be produced by |
|
3057 // another compliant java compiler. |
|
3058 Label notMethod; |
|
3059 __ movl(rdi, rdx); |
|
3060 __ andl(rdi, (1 << ConstantPoolCacheEntry::is_forced_virtual_shift)); |
|
3061 __ jcc(Assembler::zero, notMethod); |
|
3062 |
|
3063 invokevirtual_helper(rbx, rcx, rdx); |
|
3064 __ bind(notMethod); |
|
3065 |
|
3066 // Get receiver klass into rdx - also a null check |
|
3067 __ restore_locals(); // restore rdi |
|
3068 __ null_check(rcx, oopDesc::klass_offset_in_bytes()); |
|
3069 __ load_klass(rdx, rcx); |
|
3070 |
|
3071 // profile this call |
|
3072 __ profile_virtual_call(rdx, rsi, rdi); |
|
3073 |
|
3074 Label no_such_interface, no_such_method; |
|
3075 |
|
3076 __ lookup_interface_method(// inputs: rec. class, interface, itable index |
|
3077 rdx, rax, rbx, |
|
3078 // outputs: method, scan temp. reg |
|
3079 rbx, rsi, |
|
3080 no_such_interface); |
|
3081 |
|
3082 // rbx: Method* to call |
|
3083 // rcx: receiver |
|
3084 // Check for abstract method error |
|
3085 // Note: This should be done more efficiently via a throw_abstract_method_error |
|
3086 // interpreter entry point and a conditional jump to it in case of a null |
|
3087 // method. |
|
3088 __ testptr(rbx, rbx); |
|
3089 __ jcc(Assembler::zero, no_such_method); |
|
3090 |
|
3091 __ profile_arguments_type(rdx, rbx, rsi, true); |
|
3092 |
|
3093 // do the call |
|
3094 // rcx: receiver |
|
3095 // rbx,: Method* |
|
3096 __ jump_from_interpreted(rbx, rdx); |
|
3097 __ should_not_reach_here(); |
|
3098 |
|
3099 // exception handling code follows... |
|
3100 // note: must restore interpreter registers to canonical |
|
3101 // state for exception handling to work correctly! |
|
3102 |
|
3103 __ bind(no_such_method); |
|
3104 // throw exception |
|
3105 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
|
3106 __ restore_bcp(); // rsi must be correct for exception handler (was destroyed) |
|
3107 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
|
3108 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError)); |
|
3109 // the call_VM checks for exception, so we should never return here. |
|
3110 __ should_not_reach_here(); |
|
3111 |
|
3112 __ bind(no_such_interface); |
|
3113 // throw exception |
|
3114 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
|
3115 __ restore_bcp(); // rsi must be correct for exception handler (was destroyed) |
|
3116 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
|
3117 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
|
3118 InterpreterRuntime::throw_IncompatibleClassChangeError)); |
|
3119 // the call_VM checks for exception, so we should never return here. |
|
3120 __ should_not_reach_here(); |
|
3121 } |
|
3122 |
|
3123 void TemplateTable::invokehandle(int byte_no) { |
|
3124 transition(vtos, vtos); |
|
3125 assert(byte_no == f1_byte, "use this argument"); |
|
3126 const Register rbx_method = rbx; |
|
3127 const Register rax_mtype = rax; |
|
3128 const Register rcx_recv = rcx; |
|
3129 const Register rdx_flags = rdx; |
|
3130 |
|
3131 if (!EnableInvokeDynamic) { |
|
3132 // rewriter does not generate this bytecode |
|
3133 __ should_not_reach_here(); |
|
3134 return; |
|
3135 } |
|
3136 |
|
3137 prepare_invoke(byte_no, rbx_method, rax_mtype, rcx_recv); |
|
3138 __ verify_method_ptr(rbx_method); |
|
3139 __ verify_oop(rcx_recv); |
|
3140 __ null_check(rcx_recv); |
|
3141 |
|
3142 // rax: MethodType object (from cpool->resolved_references[f1], if necessary) |
|
3143 // rbx: MH.invokeExact_MT method (from f2) |
|
3144 |
|
3145 // Note: rax_mtype is already pushed (if necessary) by prepare_invoke |
|
3146 |
|
3147 // FIXME: profile the LambdaForm also |
|
3148 __ profile_final_call(rax); |
|
3149 __ profile_arguments_type(rdx, rbx_method, rsi, true); |
|
3150 |
|
3151 __ jump_from_interpreted(rbx_method, rdx); |
|
3152 } |
|
3153 |
|
3154 |
|
3155 void TemplateTable::invokedynamic(int byte_no) { |
|
3156 transition(vtos, vtos); |
|
3157 assert(byte_no == f1_byte, "use this argument"); |
|
3158 |
|
3159 if (!EnableInvokeDynamic) { |
|
3160 // We should not encounter this bytecode if !EnableInvokeDynamic. |
|
3161 // The verifier will stop it. However, if we get past the verifier, |
|
3162 // this will stop the thread in a reasonable way, without crashing the JVM. |
|
3163 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
|
3164 InterpreterRuntime::throw_IncompatibleClassChangeError)); |
|
3165 // the call_VM checks for exception, so we should never return here. |
|
3166 __ should_not_reach_here(); |
|
3167 return; |
|
3168 } |
|
3169 |
|
3170 const Register rbx_method = rbx; |
|
3171 const Register rax_callsite = rax; |
|
3172 |
|
3173 prepare_invoke(byte_no, rbx_method, rax_callsite); |
|
3174 |
|
3175 // rax: CallSite object (from cpool->resolved_references[f1]) |
|
3176 // rbx: MH.linkToCallSite method (from f2) |
|
3177 |
|
3178 // Note: rax_callsite is already pushed by prepare_invoke |
|
3179 |
|
3180 // %%% should make a type profile for any invokedynamic that takes a ref argument |
|
3181 // profile this call |
|
3182 __ profile_call(rsi); |
|
3183 __ profile_arguments_type(rdx, rbx, rsi, false); |
|
3184 |
|
3185 __ verify_oop(rax_callsite); |
|
3186 |
|
3187 __ jump_from_interpreted(rbx_method, rdx); |
|
3188 } |
|
3189 |
|
3190 //---------------------------------------------------------------------------------------------------- |
|
3191 // Allocation |
|
3192 |
|
3193 void TemplateTable::_new() { |
|
3194 transition(vtos, atos); |
|
3195 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); |
|
3196 Label slow_case; |
|
3197 Label slow_case_no_pop; |
|
3198 Label done; |
|
3199 Label initialize_header; |
|
3200 Label initialize_object; // including clearing the fields |
|
3201 Label allocate_shared; |
|
3202 |
|
3203 __ get_cpool_and_tags(rcx, rax); |
|
3204 |
|
3205 // Make sure the class we're about to instantiate has been resolved. |
|
3206 // This is done before loading InstanceKlass to be consistent with the order |
|
3207 // how Constant Pool is updated (see ConstantPool::klass_at_put) |
|
3208 const int tags_offset = Array<u1>::base_offset_in_bytes(); |
|
3209 __ cmpb(Address(rax, rdx, Address::times_1, tags_offset), JVM_CONSTANT_Class); |
|
3210 __ jcc(Assembler::notEqual, slow_case_no_pop); |
|
3211 |
|
3212 // get InstanceKlass |
|
3213 __ movptr(rcx, Address(rcx, rdx, Address::times_ptr, sizeof(ConstantPool))); |
|
3214 __ push(rcx); // save the contexts of klass for initializing the header |
|
3215 |
|
3216 // make sure klass is initialized & doesn't have finalizer |
|
3217 // make sure klass is fully initialized |
|
3218 __ cmpb(Address(rcx, InstanceKlass::init_state_offset()), InstanceKlass::fully_initialized); |
|
3219 __ jcc(Assembler::notEqual, slow_case); |
|
3220 |
|
3221 // get instance_size in InstanceKlass (scaled to a count of bytes) |
|
3222 __ movl(rdx, Address(rcx, Klass::layout_helper_offset())); |
|
3223 // test to see if it has a finalizer or is malformed in some way |
|
3224 __ testl(rdx, Klass::_lh_instance_slow_path_bit); |
|
3225 __ jcc(Assembler::notZero, slow_case); |
|
3226 |
|
3227 // |
|
3228 // Allocate the instance |
|
3229 // 1) Try to allocate in the TLAB |
|
3230 // 2) if fail and the object is large allocate in the shared Eden |
|
3231 // 3) if the above fails (or is not applicable), go to a slow case |
|
3232 // (creates a new TLAB, etc.) |
|
3233 |
|
3234 const bool allow_shared_alloc = |
|
3235 Universe::heap()->supports_inline_contig_alloc() && !CMSIncrementalMode; |
|
3236 |
|
3237 const Register thread = rcx; |
|
3238 if (UseTLAB || allow_shared_alloc) { |
|
3239 __ get_thread(thread); |
|
3240 } |
|
3241 |
|
3242 if (UseTLAB) { |
|
3243 __ movptr(rax, Address(thread, in_bytes(JavaThread::tlab_top_offset()))); |
|
3244 __ lea(rbx, Address(rax, rdx, Address::times_1)); |
|
3245 __ cmpptr(rbx, Address(thread, in_bytes(JavaThread::tlab_end_offset()))); |
|
3246 __ jcc(Assembler::above, allow_shared_alloc ? allocate_shared : slow_case); |
|
3247 __ movptr(Address(thread, in_bytes(JavaThread::tlab_top_offset())), rbx); |
|
3248 if (ZeroTLAB) { |
|
3249 // the fields have been already cleared |
|
3250 __ jmp(initialize_header); |
|
3251 } else { |
|
3252 // initialize both the header and fields |
|
3253 __ jmp(initialize_object); |
|
3254 } |
|
3255 } |
|
3256 |
|
3257 // Allocation in the shared Eden, if allowed. |
|
3258 // |
|
3259 // rdx: instance size in bytes |
|
3260 if (allow_shared_alloc) { |
|
3261 __ bind(allocate_shared); |
|
3262 |
|
3263 ExternalAddress heap_top((address)Universe::heap()->top_addr()); |
|
3264 |
|
3265 Label retry; |
|
3266 __ bind(retry); |
|
3267 __ movptr(rax, heap_top); |
|
3268 __ lea(rbx, Address(rax, rdx, Address::times_1)); |
|
3269 __ cmpptr(rbx, ExternalAddress((address)Universe::heap()->end_addr())); |
|
3270 __ jcc(Assembler::above, slow_case); |
|
3271 |
|
3272 // Compare rax, with the top addr, and if still equal, store the new |
|
3273 // top addr in rbx, at the address of the top addr pointer. Sets ZF if was |
|
3274 // equal, and clears it otherwise. Use lock prefix for atomicity on MPs. |
|
3275 // |
|
3276 // rax,: object begin |
|
3277 // rbx,: object end |
|
3278 // rdx: instance size in bytes |
|
3279 __ locked_cmpxchgptr(rbx, heap_top); |
|
3280 |
|
3281 // if someone beat us on the allocation, try again, otherwise continue |
|
3282 __ jcc(Assembler::notEqual, retry); |
|
3283 |
|
3284 __ incr_allocated_bytes(thread, rdx, 0); |
|
3285 } |
|
3286 |
|
3287 if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) { |
|
3288 // The object is initialized before the header. If the object size is |
|
3289 // zero, go directly to the header initialization. |
|
3290 __ bind(initialize_object); |
|
3291 __ decrement(rdx, sizeof(oopDesc)); |
|
3292 __ jcc(Assembler::zero, initialize_header); |
|
3293 |
|
3294 // Initialize topmost object field, divide rdx by 8, check if odd and |
|
3295 // test if zero. |
|
3296 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) |
|
3297 __ shrl(rdx, LogBytesPerLong); // divide by 2*oopSize and set carry flag if odd |
|
3298 |
|
3299 // rdx must have been multiple of 8 |
|
3300 #ifdef ASSERT |
|
3301 // make sure rdx was multiple of 8 |
|
3302 Label L; |
|
3303 // Ignore partial flag stall after shrl() since it is debug VM |
|
3304 __ jccb(Assembler::carryClear, L); |
|
3305 __ stop("object size is not multiple of 2 - adjust this code"); |
|
3306 __ bind(L); |
|
3307 // rdx must be > 0, no extra check needed here |
|
3308 #endif |
|
3309 |
|
3310 // initialize remaining object fields: rdx was a multiple of 8 |
|
3311 { Label loop; |
|
3312 __ bind(loop); |
|
3313 __ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 1*oopSize), rcx); |
|
3314 NOT_LP64(__ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 2*oopSize), rcx)); |
|
3315 __ decrement(rdx); |
|
3316 __ jcc(Assembler::notZero, loop); |
|
3317 } |
|
3318 |
|
3319 // initialize object header only. |
|
3320 __ bind(initialize_header); |
|
3321 if (UseBiasedLocking) { |
|
3322 __ pop(rcx); // get saved klass back in the register. |
|
3323 __ movptr(rbx, Address(rcx, Klass::prototype_header_offset())); |
|
3324 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()), rbx); |
|
3325 } else { |
|
3326 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()), |
|
3327 (int32_t)markOopDesc::prototype()); // header |
|
3328 __ pop(rcx); // get saved klass back in the register. |
|
3329 } |
|
3330 __ store_klass(rax, rcx); // klass |
|
3331 |
|
3332 { |
|
3333 SkipIfEqual skip_if(_masm, &DTraceAllocProbes, 0); |
|
3334 // Trigger dtrace event for fastpath |
|
3335 __ push(atos); |
|
3336 __ call_VM_leaf( |
|
3337 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), rax); |
|
3338 __ pop(atos); |
|
3339 } |
|
3340 |
|
3341 __ jmp(done); |
|
3342 } |
|
3343 |
|
3344 // slow case |
|
3345 __ bind(slow_case); |
|
3346 __ pop(rcx); // restore stack pointer to what it was when we came in. |
|
3347 __ bind(slow_case_no_pop); |
|
3348 __ get_constant_pool(rax); |
|
3349 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); |
|
3350 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), rax, rdx); |
|
3351 |
|
3352 // continue |
|
3353 __ bind(done); |
|
3354 } |
|
3355 |
|
3356 |
|
3357 void TemplateTable::newarray() { |
|
3358 transition(itos, atos); |
|
3359 __ push_i(rax); // make sure everything is on the stack |
|
3360 __ load_unsigned_byte(rdx, at_bcp(1)); |
|
3361 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), rdx, rax); |
|
3362 __ pop_i(rdx); // discard size |
|
3363 } |
|
3364 |
|
3365 |
|
3366 void TemplateTable::anewarray() { |
|
3367 transition(itos, atos); |
|
3368 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); |
|
3369 __ get_constant_pool(rcx); |
|
3370 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), rcx, rdx, rax); |
|
3371 } |
|
3372 |
|
3373 |
|
3374 void TemplateTable::arraylength() { |
|
3375 transition(atos, itos); |
|
3376 __ null_check(rax, arrayOopDesc::length_offset_in_bytes()); |
|
3377 __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes())); |
|
3378 } |
|
3379 |
|
3380 |
|
3381 void TemplateTable::checkcast() { |
|
3382 transition(atos, atos); |
|
3383 Label done, is_null, ok_is_subtype, quicked, resolved; |
|
3384 __ testptr(rax, rax); // Object is in EAX |
|
3385 __ jcc(Assembler::zero, is_null); |
|
3386 |
|
3387 // Get cpool & tags index |
|
3388 __ get_cpool_and_tags(rcx, rdx); // ECX=cpool, EDX=tags array |
|
3389 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // EBX=index |
|
3390 // See if bytecode has already been quicked |
|
3391 __ cmpb(Address(rdx, rbx, Address::times_1, Array<u1>::base_offset_in_bytes()), JVM_CONSTANT_Class); |
|
3392 __ jcc(Assembler::equal, quicked); |
|
3393 |
|
3394 __ push(atos); |
|
3395 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) ); |
|
3396 // vm_result_2 has metadata result |
|
3397 // borrow rdi from locals |
|
3398 __ get_thread(rdi); |
|
3399 __ get_vm_result_2(rax, rdi); |
|
3400 __ restore_locals(); |
|
3401 __ pop_ptr(rdx); |
|
3402 __ jmpb(resolved); |
|
3403 |
|
3404 // Get superklass in EAX and subklass in EBX |
|
3405 __ bind(quicked); |
|
3406 __ mov(rdx, rax); // Save object in EDX; EAX needed for subtype check |
|
3407 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, sizeof(ConstantPool))); |
|
3408 |
|
3409 __ bind(resolved); |
|
3410 __ load_klass(rbx, rdx); |
|
3411 |
|
3412 // Generate subtype check. Blows ECX. Resets EDI. Object in EDX. |
|
3413 // Superklass in EAX. Subklass in EBX. |
|
3414 __ gen_subtype_check( rbx, ok_is_subtype ); |
|
3415 |
|
3416 // Come here on failure |
|
3417 __ push(rdx); |
|
3418 // object is at TOS |
|
3419 __ jump(ExternalAddress(Interpreter::_throw_ClassCastException_entry)); |
|
3420 |
|
3421 // Come here on success |
|
3422 __ bind(ok_is_subtype); |
|
3423 __ mov(rax,rdx); // Restore object in EDX |
|
3424 |
|
3425 // Collect counts on whether this check-cast sees NULLs a lot or not. |
|
3426 if (ProfileInterpreter) { |
|
3427 __ jmp(done); |
|
3428 __ bind(is_null); |
|
3429 __ profile_null_seen(rcx); |
|
3430 } else { |
|
3431 __ bind(is_null); // same as 'done' |
|
3432 } |
|
3433 __ bind(done); |
|
3434 } |
|
3435 |
|
3436 |
|
3437 void TemplateTable::instanceof() { |
|
3438 transition(atos, itos); |
|
3439 Label done, is_null, ok_is_subtype, quicked, resolved; |
|
3440 __ testptr(rax, rax); |
|
3441 __ jcc(Assembler::zero, is_null); |
|
3442 |
|
3443 // Get cpool & tags index |
|
3444 __ get_cpool_and_tags(rcx, rdx); // ECX=cpool, EDX=tags array |
|
3445 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // EBX=index |
|
3446 // See if bytecode has already been quicked |
|
3447 __ cmpb(Address(rdx, rbx, Address::times_1, Array<u1>::base_offset_in_bytes()), JVM_CONSTANT_Class); |
|
3448 __ jcc(Assembler::equal, quicked); |
|
3449 |
|
3450 __ push(atos); |
|
3451 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) ); |
|
3452 // vm_result_2 has metadata result |
|
3453 // borrow rdi from locals |
|
3454 __ get_thread(rdi); |
|
3455 __ get_vm_result_2(rax, rdi); |
|
3456 __ restore_locals(); |
|
3457 __ pop_ptr(rdx); |
|
3458 __ load_klass(rdx, rdx); |
|
3459 __ jmp(resolved); |
|
3460 |
|
3461 // Get superklass in EAX and subklass in EDX |
|
3462 __ bind(quicked); |
|
3463 __ load_klass(rdx, rax); |
|
3464 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, sizeof(ConstantPool))); |
|
3465 |
|
3466 __ bind(resolved); |
|
3467 |
|
3468 // Generate subtype check. Blows ECX. Resets EDI. |
|
3469 // Superklass in EAX. Subklass in EDX. |
|
3470 __ gen_subtype_check( rdx, ok_is_subtype ); |
|
3471 |
|
3472 // Come here on failure |
|
3473 __ xorl(rax,rax); |
|
3474 __ jmpb(done); |
|
3475 // Come here on success |
|
3476 __ bind(ok_is_subtype); |
|
3477 __ movl(rax, 1); |
|
3478 |
|
3479 // Collect counts on whether this test sees NULLs a lot or not. |
|
3480 if (ProfileInterpreter) { |
|
3481 __ jmp(done); |
|
3482 __ bind(is_null); |
|
3483 __ profile_null_seen(rcx); |
|
3484 } else { |
|
3485 __ bind(is_null); // same as 'done' |
|
3486 } |
|
3487 __ bind(done); |
|
3488 // rax, = 0: obj == NULL or obj is not an instanceof the specified klass |
|
3489 // rax, = 1: obj != NULL and obj is an instanceof the specified klass |
|
3490 } |
|
3491 |
|
3492 |
|
3493 //---------------------------------------------------------------------------------------------------- |
|
3494 // Breakpoints |
|
3495 void TemplateTable::_breakpoint() { |
|
3496 |
|
3497 // Note: We get here even if we are single stepping.. |
|
3498 // jbug inists on setting breakpoints at every bytecode |
|
3499 // even if we are in single step mode. |
|
3500 |
|
3501 transition(vtos, vtos); |
|
3502 |
|
3503 // get the unpatched byte code |
|
3504 __ get_method(rcx); |
|
3505 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::get_original_bytecode_at), rcx, rsi); |
|
3506 __ mov(rbx, rax); |
|
3507 |
|
3508 // post the breakpoint event |
|
3509 __ get_method(rcx); |
|
3510 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), rcx, rsi); |
|
3511 |
|
3512 // complete the execution of original bytecode |
|
3513 __ dispatch_only_normal(vtos); |
|
3514 } |
|
3515 |
|
3516 |
|
3517 //---------------------------------------------------------------------------------------------------- |
|
3518 // Exceptions |
|
3519 |
|
3520 void TemplateTable::athrow() { |
|
3521 transition(atos, vtos); |
|
3522 __ null_check(rax); |
|
3523 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); |
|
3524 } |
|
3525 |
|
3526 |
|
3527 //---------------------------------------------------------------------------------------------------- |
|
3528 // Synchronization |
|
3529 // |
|
3530 // Note: monitorenter & exit are symmetric routines; which is reflected |
|
3531 // in the assembly code structure as well |
|
3532 // |
|
3533 // Stack layout: |
|
3534 // |
|
3535 // [expressions ] <--- rsp = expression stack top |
|
3536 // .. |
|
3537 // [expressions ] |
|
3538 // [monitor entry] <--- monitor block top = expression stack bot |
|
3539 // .. |
|
3540 // [monitor entry] |
|
3541 // [frame data ] <--- monitor block bot |
|
3542 // ... |
|
3543 // [saved rbp, ] <--- rbp, |
|
3544 |
|
3545 |
|
3546 void TemplateTable::monitorenter() { |
|
3547 transition(atos, vtos); |
|
3548 |
|
3549 // check for NULL object |
|
3550 __ null_check(rax); |
|
3551 |
|
3552 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); |
|
3553 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); |
|
3554 const int entry_size = ( frame::interpreter_frame_monitor_size() * wordSize); |
|
3555 Label allocated; |
|
3556 |
|
3557 // initialize entry pointer |
|
3558 __ xorl(rdx, rdx); // points to free slot or NULL |
|
3559 |
|
3560 // find a free slot in the monitor block (result in rdx) |
|
3561 { Label entry, loop, exit; |
|
3562 __ movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
|
3563 |
|
3564 __ lea(rbx, monitor_block_bot); // points to word before bottom of monitor block |
|
3565 __ jmpb(entry); |
|
3566 |
|
3567 __ bind(loop); |
|
3568 __ cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
|
3569 __ cmovptr(Assembler::equal, rdx, rcx); // if not used then remember entry in rdx |
|
3570 __ cmpptr(rax, Address(rcx, BasicObjectLock::obj_offset_in_bytes())); // check if current entry is for same object |
|
3571 __ jccb(Assembler::equal, exit); // if same object then stop searching |
|
3572 __ addptr(rcx, entry_size); // otherwise advance to next entry |
|
3573 __ bind(entry); |
|
3574 __ cmpptr(rcx, rbx); // check if bottom reached |
|
3575 __ jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
|
3576 __ bind(exit); |
|
3577 } |
|
3578 |
|
3579 __ testptr(rdx, rdx); // check if a slot has been found |
|
3580 __ jccb(Assembler::notZero, allocated); // if found, continue with that one |
|
3581 |
|
3582 // allocate one if there's no free slot |
|
3583 { Label entry, loop; |
|
3584 // 1. compute new pointers // rsp: old expression stack top |
|
3585 __ movptr(rdx, monitor_block_bot); // rdx: old expression stack bottom |
|
3586 __ subptr(rsp, entry_size); // move expression stack top |
|
3587 __ subptr(rdx, entry_size); // move expression stack bottom |
|
3588 __ mov(rcx, rsp); // set start value for copy loop |
|
3589 __ movptr(monitor_block_bot, rdx); // set new monitor block top |
|
3590 __ jmp(entry); |
|
3591 // 2. move expression stack contents |
|
3592 __ bind(loop); |
|
3593 __ movptr(rbx, Address(rcx, entry_size)); // load expression stack word from old location |
|
3594 __ movptr(Address(rcx, 0), rbx); // and store it at new location |
|
3595 __ addptr(rcx, wordSize); // advance to next word |
|
3596 __ bind(entry); |
|
3597 __ cmpptr(rcx, rdx); // check if bottom reached |
|
3598 __ jcc(Assembler::notEqual, loop); // if not at bottom then copy next word |
|
3599 } |
|
3600 |
|
3601 // call run-time routine |
|
3602 // rdx: points to monitor entry |
|
3603 __ bind(allocated); |
|
3604 |
|
3605 // Increment bcp to point to the next bytecode, so exception handling for async. exceptions work correctly. |
|
3606 // The object has already been poped from the stack, so the expression stack looks correct. |
|
3607 __ increment(rsi); |
|
3608 |
|
3609 __ movptr(Address(rdx, BasicObjectLock::obj_offset_in_bytes()), rax); // store object |
|
3610 __ lock_object(rdx); |
|
3611 |
|
3612 // check to make sure this monitor doesn't cause stack overflow after locking |
|
3613 __ save_bcp(); // in case of exception |
|
3614 __ generate_stack_overflow_check(0); |
|
3615 |
|
3616 // The bcp has already been incremented. Just need to dispatch to next instruction. |
|
3617 __ dispatch_next(vtos); |
|
3618 } |
|
3619 |
|
3620 |
|
3621 void TemplateTable::monitorexit() { |
|
3622 transition(atos, vtos); |
|
3623 |
|
3624 // check for NULL object |
|
3625 __ null_check(rax); |
|
3626 |
|
3627 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); |
|
3628 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); |
|
3629 const int entry_size = ( frame::interpreter_frame_monitor_size() * wordSize); |
|
3630 Label found; |
|
3631 |
|
3632 // find matching slot |
|
3633 { Label entry, loop; |
|
3634 __ movptr(rdx, monitor_block_top); // points to current entry, starting with top-most entry |
|
3635 __ lea(rbx, monitor_block_bot); // points to word before bottom of monitor block |
|
3636 __ jmpb(entry); |
|
3637 |
|
3638 __ bind(loop); |
|
3639 __ cmpptr(rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); // check if current entry is for same object |
|
3640 __ jcc(Assembler::equal, found); // if same object then stop searching |
|
3641 __ addptr(rdx, entry_size); // otherwise advance to next entry |
|
3642 __ bind(entry); |
|
3643 __ cmpptr(rdx, rbx); // check if bottom reached |
|
3644 __ jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
|
3645 } |
|
3646 |
|
3647 // error handling. Unlocking was not block-structured |
|
3648 Label end; |
|
3649 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); |
|
3650 __ should_not_reach_here(); |
|
3651 |
|
3652 // call run-time routine |
|
3653 // rcx: points to monitor entry |
|
3654 __ bind(found); |
|
3655 __ push_ptr(rax); // make sure object is on stack (contract with oopMaps) |
|
3656 __ unlock_object(rdx); |
|
3657 __ pop_ptr(rax); // discard object |
|
3658 __ bind(end); |
|
3659 } |
|
3660 |
|
3661 |
|
3662 //---------------------------------------------------------------------------------------------------- |
|
3663 // Wide instructions |
|
3664 |
|
3665 void TemplateTable::wide() { |
|
3666 transition(vtos, vtos); |
|
3667 __ load_unsigned_byte(rbx, at_bcp(1)); |
|
3668 ExternalAddress wtable((address)Interpreter::_wentry_point); |
|
3669 __ jump(ArrayAddress(wtable, Address(noreg, rbx, Address::times_ptr))); |
|
3670 // Note: the rsi increment step is part of the individual wide bytecode implementations |
|
3671 } |
|
3672 |
|
3673 |
|
3674 //---------------------------------------------------------------------------------------------------- |
|
3675 // Multi arrays |
|
3676 |
|
3677 void TemplateTable::multianewarray() { |
|
3678 transition(vtos, atos); |
|
3679 __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions |
|
3680 // last dim is on top of stack; we want address of first one: |
|
3681 // first_addr = last_addr + (ndims - 1) * stackElementSize - 1*wordsize |
|
3682 // the latter wordSize to point to the beginning of the array. |
|
3683 __ lea( rax, Address(rsp, rax, Interpreter::stackElementScale(), -wordSize)); |
|
3684 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), rax); // pass in rax, |
|
3685 __ load_unsigned_byte(rbx, at_bcp(3)); |
|
3686 __ lea(rsp, Address(rsp, rbx, Interpreter::stackElementScale())); // get rid of counts |
|
3687 } |
|
3688 |
|
3689 #endif /* !CC_INTERP */ |