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1 /*
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2 * Copyright 2007-2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 #include "incls/_precompiled.incl"
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26 #include "incls/_cppInterpreter_sparc.cpp.incl"
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27
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28 #ifdef CC_INTERP
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29
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30 // Routine exists to make tracebacks look decent in debugger
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31 // while "shadow" interpreter frames are on stack. It is also
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32 // used to distinguish interpreter frames.
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33
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34 extern "C" void RecursiveInterpreterActivation(interpreterState istate) {
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35 ShouldNotReachHere();
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36 }
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37
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38 bool CppInterpreter::contains(address pc) {
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39 return ( _code->contains(pc) ||
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40 ( pc == (CAST_FROM_FN_PTR(address, RecursiveInterpreterActivation) + frame::pc_return_offset)));
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41 }
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42
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43 #define STATE(field_name) Lstate, in_bytes(byte_offset_of(BytecodeInterpreter, field_name))
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44 #define __ _masm->
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45
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46 Label frame_manager_entry;
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47 Label fast_accessor_slow_entry_path; // fast accessor methods need to be able to jmp to unsynchronized
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48 // c++ interpreter entry point this holds that entry point label.
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49
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50 static address unctrap_frame_manager_entry = NULL;
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51
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52 static address interpreter_return_address = NULL;
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53 static address deopt_frame_manager_return_atos = NULL;
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54 static address deopt_frame_manager_return_btos = NULL;
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55 static address deopt_frame_manager_return_itos = NULL;
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56 static address deopt_frame_manager_return_ltos = NULL;
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57 static address deopt_frame_manager_return_ftos = NULL;
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58 static address deopt_frame_manager_return_dtos = NULL;
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59 static address deopt_frame_manager_return_vtos = NULL;
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60
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61 const Register prevState = G1_scratch;
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62
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63 void InterpreterGenerator::save_native_result(void) {
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64 // result potentially in O0/O1: save it across calls
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65 __ stf(FloatRegisterImpl::D, F0, STATE(_native_fresult));
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66 #ifdef _LP64
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67 __ stx(O0, STATE(_native_lresult));
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68 #else
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69 __ std(O0, STATE(_native_lresult));
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70 #endif
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71 }
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72
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73 void InterpreterGenerator::restore_native_result(void) {
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74
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75 // Restore any method result value
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76 __ ldf(FloatRegisterImpl::D, STATE(_native_fresult), F0);
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77 #ifdef _LP64
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78 __ ldx(STATE(_native_lresult), O0);
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79 #else
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80 __ ldd(STATE(_native_lresult), O0);
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81 #endif
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82 }
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83
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84 // A result handler converts/unboxes a native call result into
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85 // a java interpreter/compiler result. The current frame is an
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86 // interpreter frame. The activation frame unwind code must be
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87 // consistent with that of TemplateTable::_return(...). In the
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88 // case of native methods, the caller's SP was not modified.
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89 address CppInterpreterGenerator::generate_result_handler_for(BasicType type) {
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90 address entry = __ pc();
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91 Register Itos_i = Otos_i ->after_save();
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92 Register Itos_l = Otos_l ->after_save();
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93 Register Itos_l1 = Otos_l1->after_save();
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94 Register Itos_l2 = Otos_l2->after_save();
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95 switch (type) {
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96 case T_BOOLEAN: __ subcc(G0, O0, G0); __ addc(G0, 0, Itos_i); break; // !0 => true; 0 => false
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97 case T_CHAR : __ sll(O0, 16, O0); __ srl(O0, 16, Itos_i); break; // cannot use and3, 0xFFFF too big as immediate value!
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98 case T_BYTE : __ sll(O0, 24, O0); __ sra(O0, 24, Itos_i); break;
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99 case T_SHORT : __ sll(O0, 16, O0); __ sra(O0, 16, Itos_i); break;
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100 case T_LONG :
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101 #ifndef _LP64
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102 __ mov(O1, Itos_l2); // move other half of long
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103 #endif // ifdef or no ifdef, fall through to the T_INT case
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104 case T_INT : __ mov(O0, Itos_i); break;
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105 case T_VOID : /* nothing to do */ break;
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106 case T_FLOAT : assert(F0 == Ftos_f, "fix this code" ); break;
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107 case T_DOUBLE : assert(F0 == Ftos_d, "fix this code" ); break;
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108 case T_OBJECT :
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109 __ ld_ptr(STATE(_oop_temp), Itos_i);
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110 __ verify_oop(Itos_i);
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111 break;
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112 default : ShouldNotReachHere();
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113 }
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114 __ ret(); // return from interpreter activation
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115 __ delayed()->restore(I5_savedSP, G0, SP); // remove interpreter frame
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116 NOT_PRODUCT(__ emit_long(0);) // marker for disassembly
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117 return entry;
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118 }
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119
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120 // tosca based result to c++ interpreter stack based result.
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121 // Result goes to address in L1_scratch
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122
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123 address CppInterpreterGenerator::generate_tosca_to_stack_converter(BasicType type) {
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124 // A result is in the native abi result register from a native method call.
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125 // We need to return this result to the interpreter by pushing the result on the interpreter's
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126 // stack. This is relatively simple the destination is in L1_scratch
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127 // i.e. L1_scratch is the first free element on the stack. If we "push" a return value we must
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128 // adjust L1_scratch
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129 address entry = __ pc();
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130 switch (type) {
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131 case T_BOOLEAN:
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132 // !0 => true; 0 => false
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133 __ subcc(G0, O0, G0);
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134 __ addc(G0, 0, O0);
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135 __ st(O0, L1_scratch, 0);
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136 __ sub(L1_scratch, wordSize, L1_scratch);
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137 break;
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138
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139 // cannot use and3, 0xFFFF too big as immediate value!
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140 case T_CHAR :
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141 __ sll(O0, 16, O0);
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142 __ srl(O0, 16, O0);
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143 __ st(O0, L1_scratch, 0);
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144 __ sub(L1_scratch, wordSize, L1_scratch);
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145 break;
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146
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147 case T_BYTE :
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148 __ sll(O0, 24, O0);
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149 __ sra(O0, 24, O0);
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150 __ st(O0, L1_scratch, 0);
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151 __ sub(L1_scratch, wordSize, L1_scratch);
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152 break;
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153
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154 case T_SHORT :
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155 __ sll(O0, 16, O0);
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156 __ sra(O0, 16, O0);
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157 __ st(O0, L1_scratch, 0);
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158 __ sub(L1_scratch, wordSize, L1_scratch);
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159 break;
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160 case T_LONG :
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161 #ifndef _LP64
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123
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162 #if defined(COMPILER2)
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163 // All return values are where we want them, except for Longs. C2 returns
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164 // longs in G1 in the 32-bit build whereas the interpreter wants them in O0/O1.
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165 // Since the interpreter will return longs in G1 and O0/O1 in the 32bit
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166 // build even if we are returning from interpreted we just do a little
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167 // stupid shuffing.
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168 // Note: I tried to make c2 return longs in O0/O1 and G1 so we wouldn't have to
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169 // do this here. Unfortunately if we did a rethrow we'd see an machepilog node
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170 // first which would move g1 -> O0/O1 and destroy the exception we were throwing.
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171 __ stx(G1, L1_scratch, -wordSize);
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172 #else
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173 // native result is in O0, O1
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174 __ st(O1, L1_scratch, 0); // Low order
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175 __ st(O0, L1_scratch, -wordSize); // High order
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123
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176 #endif /* COMPILER2 */
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0
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177 #else
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123
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178 __ stx(O0, L1_scratch, -wordSize);
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0
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179 #endif
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180 __ sub(L1_scratch, 2*wordSize, L1_scratch);
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181 break;
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182
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183 case T_INT :
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184 __ st(O0, L1_scratch, 0);
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185 __ sub(L1_scratch, wordSize, L1_scratch);
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186 break;
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187
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188 case T_VOID : /* nothing to do */
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189 break;
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190
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191 case T_FLOAT :
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192 __ stf(FloatRegisterImpl::S, F0, L1_scratch, 0);
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193 __ sub(L1_scratch, wordSize, L1_scratch);
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194 break;
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195
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196 case T_DOUBLE :
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197 // Every stack slot is aligned on 64 bit, However is this
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198 // the correct stack slot on 64bit?? QQQ
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199 __ stf(FloatRegisterImpl::D, F0, L1_scratch, -wordSize);
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200 __ sub(L1_scratch, 2*wordSize, L1_scratch);
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201 break;
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202 case T_OBJECT :
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203 __ verify_oop(O0);
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204 __ st_ptr(O0, L1_scratch, 0);
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205 __ sub(L1_scratch, wordSize, L1_scratch);
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206 break;
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207 default : ShouldNotReachHere();
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208 }
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209 __ retl(); // return from interpreter activation
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210 __ delayed()->nop(); // schedule this better
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211 NOT_PRODUCT(__ emit_long(0);) // marker for disassembly
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212 return entry;
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213 }
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214
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215 address CppInterpreterGenerator::generate_stack_to_stack_converter(BasicType type) {
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216 // A result is in the java expression stack of the interpreted method that has just
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217 // returned. Place this result on the java expression stack of the caller.
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218 //
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219 // The current interpreter activation in Lstate is for the method just returning its
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220 // result. So we know that the result of this method is on the top of the current
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221 // execution stack (which is pre-pushed) and will be return to the top of the caller
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222 // stack. The top of the callers stack is the bottom of the locals of the current
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223 // activation.
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224 // Because of the way activation are managed by the frame manager the value of esp is
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225 // below both the stack top of the current activation and naturally the stack top
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226 // of the calling activation. This enable this routine to leave the return address
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227 // to the frame manager on the stack and do a vanilla return.
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228 //
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229 // On entry: O0 - points to source (callee stack top)
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230 // O1 - points to destination (caller stack top [i.e. free location])
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231 // destroys O2, O3
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232 //
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233
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234 address entry = __ pc();
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235 switch (type) {
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236 case T_VOID: break;
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237 break;
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238 case T_FLOAT :
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239 case T_BOOLEAN:
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240 case T_CHAR :
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241 case T_BYTE :
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242 case T_SHORT :
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243 case T_INT :
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244 // 1 word result
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245 __ ld(O0, 0, O2);
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246 __ st(O2, O1, 0);
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247 __ sub(O1, wordSize, O1);
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248 break;
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249 case T_DOUBLE :
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250 case T_LONG :
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251 // return top two words on current expression stack to caller's expression stack
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252 // The caller's expression stack is adjacent to the current frame manager's intepretState
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253 // except we allocated one extra word for this intepretState so we won't overwrite it
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254 // when we return a two word result.
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255 #ifdef _LP64
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256 __ ld_ptr(O0, 0, O2);
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257 __ st_ptr(O2, O1, -wordSize);
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258 #else
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259 __ ld(O0, 0, O2);
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260 __ ld(O0, wordSize, O3);
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261 __ st(O3, O1, 0);
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262 __ st(O2, O1, -wordSize);
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263 #endif
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264 __ sub(O1, 2*wordSize, O1);
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265 break;
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266 case T_OBJECT :
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267 __ ld_ptr(O0, 0, O2);
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268 __ verify_oop(O2); // verify it
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269 __ st_ptr(O2, O1, 0);
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270 __ sub(O1, wordSize, O1);
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271 break;
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272 default : ShouldNotReachHere();
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273 }
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274 __ retl();
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275 __ delayed()->nop(); // QQ schedule this better
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276 return entry;
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277 }
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278
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279 address CppInterpreterGenerator::generate_stack_to_native_abi_converter(BasicType type) {
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280 // A result is in the java expression stack of the interpreted method that has just
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281 // returned. Place this result in the native abi that the caller expects.
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282 // We are in a new frame registers we set must be in caller (i.e. callstub) frame.
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283 //
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284 // Similar to generate_stack_to_stack_converter above. Called at a similar time from the
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285 // frame manager execept in this situation the caller is native code (c1/c2/call_stub)
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286 // and so rather than return result onto caller's java expression stack we return the
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287 // result in the expected location based on the native abi.
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288 // On entry: O0 - source (stack top)
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289 // On exit result in expected output register
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290 // QQQ schedule this better
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291
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292 address entry = __ pc();
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293 switch (type) {
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294 case T_VOID: break;
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295 break;
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296 case T_FLOAT :
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297 __ ldf(FloatRegisterImpl::S, O0, 0, F0);
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298 break;
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299 case T_BOOLEAN:
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300 case T_CHAR :
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301 case T_BYTE :
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302 case T_SHORT :
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303 case T_INT :
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304 // 1 word result
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305 __ ld(O0, 0, O0->after_save());
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306 break;
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307 case T_DOUBLE :
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308 __ ldf(FloatRegisterImpl::D, O0, 0, F0);
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309 break;
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310 case T_LONG :
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311 // return top two words on current expression stack to caller's expression stack
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312 // The caller's expression stack is adjacent to the current frame manager's interpretState
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313 // except we allocated one extra word for this intepretState so we won't overwrite it
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314 // when we return a two word result.
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315 #ifdef _LP64
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316 __ ld_ptr(O0, 0, O0->after_save());
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317 #else
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318 __ ld(O0, wordSize, O1->after_save());
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319 __ ld(O0, 0, O0->after_save());
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320 #endif
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321 #if defined(COMPILER2) && !defined(_LP64)
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322 // C2 expects long results in G1 we can't tell if we're returning to interpreted
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323 // or compiled so just be safe use G1 and O0/O1
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324
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325 // Shift bits into high (msb) of G1
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326 __ sllx(Otos_l1->after_save(), 32, G1);
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327 // Zero extend low bits
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328 __ srl (Otos_l2->after_save(), 0, Otos_l2->after_save());
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329 __ or3 (Otos_l2->after_save(), G1, G1);
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330 #endif /* COMPILER2 */
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331 break;
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332 case T_OBJECT :
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333 __ ld_ptr(O0, 0, O0->after_save());
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334 __ verify_oop(O0->after_save()); // verify it
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335 break;
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336 default : ShouldNotReachHere();
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337 }
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338 __ retl();
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339 __ delayed()->nop();
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340 return entry;
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341 }
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342
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343 address CppInterpreter::return_entry(TosState state, int length) {
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344 // make it look good in the debugger
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345 return CAST_FROM_FN_PTR(address, RecursiveInterpreterActivation) + frame::pc_return_offset;
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346 }
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347
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348 address CppInterpreter::deopt_entry(TosState state, int length) {
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349 address ret = NULL;
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350 if (length != 0) {
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351 switch (state) {
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352 case atos: ret = deopt_frame_manager_return_atos; break;
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353 case btos: ret = deopt_frame_manager_return_btos; break;
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354 case ctos:
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355 case stos:
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356 case itos: ret = deopt_frame_manager_return_itos; break;
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357 case ltos: ret = deopt_frame_manager_return_ltos; break;
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358 case ftos: ret = deopt_frame_manager_return_ftos; break;
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359 case dtos: ret = deopt_frame_manager_return_dtos; break;
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360 case vtos: ret = deopt_frame_manager_return_vtos; break;
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361 }
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362 } else {
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363 ret = unctrap_frame_manager_entry; // re-execute the bytecode ( e.g. uncommon trap)
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|
364 }
|
|
|
365 assert(ret != NULL, "Not initialized");
|
|
|
366 return ret;
|
|
|
367 }
|
|
|
368
|
|
|
369 //
|
|
|
370 // Helpers for commoning out cases in the various type of method entries.
|
|
|
371 //
|
|
|
372
|
|
|
373 // increment invocation count & check for overflow
|
|
|
374 //
|
|
|
375 // Note: checking for negative value instead of overflow
|
|
|
376 // so we have a 'sticky' overflow test
|
|
|
377 //
|
|
|
378 // Lmethod: method
|
|
|
379 // ??: invocation counter
|
|
|
380 //
|
|
|
381 void InterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) {
|
|
|
382 // Update standard invocation counters
|
|
|
383 __ increment_invocation_counter(O0, G3_scratch);
|
|
|
384 if (ProfileInterpreter) { // %%% Merge this into methodDataOop
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|
|
385 __ ld_ptr(STATE(_method), G3_scratch);
|
|
|
386 Address interpreter_invocation_counter(G3_scratch, 0, in_bytes(methodOopDesc::interpreter_invocation_counter_offset()));
|
|
|
387 __ ld(interpreter_invocation_counter, G3_scratch);
|
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|
388 __ inc(G3_scratch);
|
|
|
389 __ st(G3_scratch, interpreter_invocation_counter);
|
|
|
390 }
|
|
|
391
|
|
|
392 Address invocation_limit(G3_scratch, (address)&InvocationCounter::InterpreterInvocationLimit);
|
|
|
393 __ sethi(invocation_limit);
|
|
|
394 __ ld(invocation_limit, G3_scratch);
|
|
|
395 __ cmp(O0, G3_scratch);
|
|
|
396 __ br(Assembler::greaterEqualUnsigned, false, Assembler::pn, *overflow);
|
|
|
397 __ delayed()->nop();
|
|
|
398
|
|
|
399 }
|
|
|
400
|
|
|
401 address InterpreterGenerator::generate_empty_entry(void) {
|
|
|
402
|
|
|
403 // A method that does nothing but return...
|
|
|
404
|
|
|
405 address entry = __ pc();
|
|
|
406 Label slow_path;
|
|
|
407
|
|
|
408 __ verify_oop(G5_method);
|
|
|
409
|
|
|
410 // do nothing for empty methods (do not even increment invocation counter)
|
|
|
411 if ( UseFastEmptyMethods) {
|
|
|
412 // If we need a safepoint check, generate full interpreter entry.
|
|
|
413 Address sync_state(G3_scratch, SafepointSynchronize::address_of_state());
|
|
|
414 __ load_contents(sync_state, G3_scratch);
|
|
|
415 __ cmp(G3_scratch, SafepointSynchronize::_not_synchronized);
|
|
|
416 __ br(Assembler::notEqual, false, Assembler::pn, frame_manager_entry);
|
|
|
417 __ delayed()->nop();
|
|
|
418
|
|
|
419 // Code: _return
|
|
|
420 __ retl();
|
|
|
421 __ delayed()->mov(O5_savedSP, SP);
|
|
|
422 return entry;
|
|
|
423 }
|
|
|
424 return NULL;
|
|
|
425 }
|
|
|
426
|
|
|
427 // Call an accessor method (assuming it is resolved, otherwise drop into
|
|
|
428 // vanilla (slow path) entry
|
|
|
429
|
|
|
430 // Generates code to elide accessor methods
|
|
|
431 // Uses G3_scratch and G1_scratch as scratch
|
|
|
432 address InterpreterGenerator::generate_accessor_entry(void) {
|
|
|
433
|
|
|
434 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites thereof;
|
|
|
435 // parameter size = 1
|
|
|
436 // Note: We can only use this code if the getfield has been resolved
|
|
|
437 // and if we don't have a null-pointer exception => check for
|
|
|
438 // these conditions first and use slow path if necessary.
|
|
|
439 address entry = __ pc();
|
|
|
440 Label slow_path;
|
|
|
441
|
|
|
442 if ( UseFastAccessorMethods) {
|
|
|
443 // Check if we need to reach a safepoint and generate full interpreter
|
|
|
444 // frame if so.
|
|
|
445 Address sync_state(G3_scratch, SafepointSynchronize::address_of_state());
|
|
|
446 __ load_contents(sync_state, G3_scratch);
|
|
|
447 __ cmp(G3_scratch, SafepointSynchronize::_not_synchronized);
|
|
|
448 __ br(Assembler::notEqual, false, Assembler::pn, slow_path);
|
|
|
449 __ delayed()->nop();
|
|
|
450
|
|
|
451 // Check if local 0 != NULL
|
|
|
452 __ ld_ptr(Gargs, G0, Otos_i ); // get local 0
|
|
|
453 __ tst(Otos_i); // check if local 0 == NULL and go the slow path
|
|
|
454 __ brx(Assembler::zero, false, Assembler::pn, slow_path);
|
|
|
455 __ delayed()->nop();
|
|
|
456
|
|
|
457
|
|
|
458 // read first instruction word and extract bytecode @ 1 and index @ 2
|
|
|
459 // get first 4 bytes of the bytecodes (big endian!)
|
|
|
460 __ ld_ptr(Address(G5_method, 0, in_bytes(methodOopDesc::const_offset())), G1_scratch);
|
|
|
461 __ ld(Address(G1_scratch, 0, in_bytes(constMethodOopDesc::codes_offset())), G1_scratch);
|
|
|
462
|
|
|
463 // move index @ 2 far left then to the right most two bytes.
|
|
|
464 __ sll(G1_scratch, 2*BitsPerByte, G1_scratch);
|
|
|
465 __ srl(G1_scratch, 2*BitsPerByte - exact_log2(in_words(
|
|
|
466 ConstantPoolCacheEntry::size()) * BytesPerWord), G1_scratch);
|
|
|
467
|
|
|
468 // get constant pool cache
|
|
|
469 __ ld_ptr(G5_method, in_bytes(methodOopDesc::constants_offset()), G3_scratch);
|
|
|
470 __ ld_ptr(G3_scratch, constantPoolOopDesc::cache_offset_in_bytes(), G3_scratch);
|
|
|
471
|
|
|
472 // get specific constant pool cache entry
|
|
|
473 __ add(G3_scratch, G1_scratch, G3_scratch);
|
|
|
474
|
|
|
475 // Check the constant Pool cache entry to see if it has been resolved.
|
|
|
476 // If not, need the slow path.
|
|
|
477 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset();
|
|
|
478 __ ld_ptr(G3_scratch, in_bytes(cp_base_offset + ConstantPoolCacheEntry::indices_offset()), G1_scratch);
|
|
|
479 __ srl(G1_scratch, 2*BitsPerByte, G1_scratch);
|
|
|
480 __ and3(G1_scratch, 0xFF, G1_scratch);
|
|
|
481 __ cmp(G1_scratch, Bytecodes::_getfield);
|
|
|
482 __ br(Assembler::notEqual, false, Assembler::pn, slow_path);
|
|
|
483 __ delayed()->nop();
|
|
|
484
|
|
|
485 // Get the type and return field offset from the constant pool cache
|
|
|
486 __ ld_ptr(G3_scratch, in_bytes(cp_base_offset + ConstantPoolCacheEntry::flags_offset()), G1_scratch);
|
|
|
487 __ ld_ptr(G3_scratch, in_bytes(cp_base_offset + ConstantPoolCacheEntry::f2_offset()), G3_scratch);
|
|
|
488
|
|
|
489 Label xreturn_path;
|
|
|
490 // Need to differentiate between igetfield, agetfield, bgetfield etc.
|
|
|
491 // because they are different sizes.
|
|
|
492 // Get the type from the constant pool cache
|
|
|
493 __ srl(G1_scratch, ConstantPoolCacheEntry::tosBits, G1_scratch);
|
|
|
494 // Make sure we don't need to mask G1_scratch for tosBits after the above shift
|
|
|
495 ConstantPoolCacheEntry::verify_tosBits();
|
|
|
496 __ cmp(G1_scratch, atos );
|
|
|
497 __ br(Assembler::equal, true, Assembler::pt, xreturn_path);
|
|
|
498 __ delayed()->ld_ptr(Otos_i, G3_scratch, Otos_i);
|
|
|
499 __ cmp(G1_scratch, itos);
|
|
|
500 __ br(Assembler::equal, true, Assembler::pt, xreturn_path);
|
|
|
501 __ delayed()->ld(Otos_i, G3_scratch, Otos_i);
|
|
|
502 __ cmp(G1_scratch, stos);
|
|
|
503 __ br(Assembler::equal, true, Assembler::pt, xreturn_path);
|
|
|
504 __ delayed()->ldsh(Otos_i, G3_scratch, Otos_i);
|
|
|
505 __ cmp(G1_scratch, ctos);
|
|
|
506 __ br(Assembler::equal, true, Assembler::pt, xreturn_path);
|
|
|
507 __ delayed()->lduh(Otos_i, G3_scratch, Otos_i);
|
|
|
508 #ifdef ASSERT
|
|
|
509 __ cmp(G1_scratch, btos);
|
|
|
510 __ br(Assembler::equal, true, Assembler::pt, xreturn_path);
|
|
|
511 __ delayed()->ldsb(Otos_i, G3_scratch, Otos_i);
|
|
|
512 __ should_not_reach_here();
|
|
|
513 #endif
|
|
|
514 __ ldsb(Otos_i, G3_scratch, Otos_i);
|
|
|
515 __ bind(xreturn_path);
|
|
|
516
|
|
|
517 // _ireturn/_areturn
|
|
|
518 __ retl(); // return from leaf routine
|
|
|
519 __ delayed()->mov(O5_savedSP, SP);
|
|
|
520
|
|
|
521 // Generate regular method entry
|
|
|
522 __ bind(slow_path);
|
|
|
523 __ ba(false, fast_accessor_slow_entry_path);
|
|
|
524 __ delayed()->nop();
|
|
|
525 return entry;
|
|
|
526 }
|
|
|
527 return NULL;
|
|
|
528 }
|
|
|
529
|
|
|
530 //
|
|
|
531 // Interpreter stub for calling a native method. (C++ interpreter)
|
|
|
532 // This sets up a somewhat different looking stack for calling the native method
|
|
|
533 // than the typical interpreter frame setup.
|
|
|
534 //
|
|
|
535
|
|
|
536 address InterpreterGenerator::generate_native_entry(bool synchronized) {
|
|
|
537 address entry = __ pc();
|
|
|
538
|
|
|
539 // the following temporary registers are used during frame creation
|
|
|
540 const Register Gtmp1 = G3_scratch ;
|
|
|
541 const Register Gtmp2 = G1_scratch;
|
|
|
542 const Address size_of_parameters(G5_method, 0, in_bytes(methodOopDesc::size_of_parameters_offset()));
|
|
|
543
|
|
|
544 bool inc_counter = UseCompiler || CountCompiledCalls;
|
|
|
545
|
|
|
546 // make sure registers are different!
|
|
|
547 assert_different_registers(G2_thread, G5_method, Gargs, Gtmp1, Gtmp2);
|
|
|
548
|
|
|
549 const Address access_flags (G5_method, 0, in_bytes(methodOopDesc::access_flags_offset()));
|
|
|
550
|
|
|
551 Label Lentry;
|
|
|
552 __ bind(Lentry);
|
|
|
553
|
|
|
554 __ verify_oop(G5_method);
|
|
|
555
|
|
|
556 const Register Glocals_size = G3;
|
|
|
557 assert_different_registers(Glocals_size, G4_scratch, Gframe_size);
|
|
|
558
|
|
|
559 // make sure method is native & not abstract
|
|
|
560 // rethink these assertions - they can be simplified and shared (gri 2/25/2000)
|
|
|
561 #ifdef ASSERT
|
|
|
562 __ ld(access_flags, Gtmp1);
|
|
|
563 {
|
|
|
564 Label L;
|
|
|
565 __ btst(JVM_ACC_NATIVE, Gtmp1);
|
|
|
566 __ br(Assembler::notZero, false, Assembler::pt, L);
|
|
|
567 __ delayed()->nop();
|
|
|
568 __ stop("tried to execute non-native method as native");
|
|
|
569 __ bind(L);
|
|
|
570 }
|
|
|
571 { Label L;
|
|
|
572 __ btst(JVM_ACC_ABSTRACT, Gtmp1);
|
|
|
573 __ br(Assembler::zero, false, Assembler::pt, L);
|
|
|
574 __ delayed()->nop();
|
|
|
575 __ stop("tried to execute abstract method as non-abstract");
|
|
|
576 __ bind(L);
|
|
|
577 }
|
|
|
578 #endif // ASSERT
|
|
|
579
|
|
|
580 __ lduh(size_of_parameters, Gtmp1);
|
|
|
581 __ sll(Gtmp1, LogBytesPerWord, Gtmp2); // parameter size in bytes
|
|
|
582 __ add(Gargs, Gtmp2, Gargs); // points to first local + BytesPerWord
|
|
|
583 // NEW
|
|
|
584 __ add(Gargs, -wordSize, Gargs); // points to first local[0]
|
|
|
585 // generate the code to allocate the interpreter stack frame
|
|
|
586 // NEW FRAME ALLOCATED HERE
|
|
|
587 // save callers original sp
|
|
|
588 // __ mov(SP, I5_savedSP->after_restore());
|
|
|
589
|
|
|
590 generate_compute_interpreter_state(Lstate, G0, true);
|
|
|
591
|
|
|
592 // At this point Lstate points to new interpreter state
|
|
|
593 //
|
|
|
594
|
|
|
595 const Address do_not_unlock_if_synchronized(G2_thread, 0,
|
|
|
596 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
|
|
|
597 // Since at this point in the method invocation the exception handler
|
|
|
598 // would try to exit the monitor of synchronized methods which hasn't
|
|
|
599 // been entered yet, we set the thread local variable
|
|
|
600 // _do_not_unlock_if_synchronized to true. If any exception was thrown by
|
|
|
601 // runtime, exception handling i.e. unlock_if_synchronized_method will
|
|
|
602 // check this thread local flag.
|
|
|
603 // This flag has two effects, one is to force an unwind in the topmost
|
|
|
604 // interpreter frame and not perform an unlock while doing so.
|
|
|
605
|
|
|
606 __ movbool(true, G3_scratch);
|
|
|
607 __ stbool(G3_scratch, do_not_unlock_if_synchronized);
|
|
|
608
|
|
|
609
|
|
|
610 // increment invocation counter and check for overflow
|
|
|
611 //
|
|
|
612 // Note: checking for negative value instead of overflow
|
|
|
613 // so we have a 'sticky' overflow test (may be of
|
|
|
614 // importance as soon as we have true MT/MP)
|
|
|
615 Label invocation_counter_overflow;
|
|
|
616 if (inc_counter) {
|
|
|
617 generate_counter_incr(&invocation_counter_overflow, NULL, NULL);
|
|
|
618 }
|
|
|
619 Label Lcontinue;
|
|
|
620 __ bind(Lcontinue);
|
|
|
621
|
|
|
622 bang_stack_shadow_pages(true);
|
|
|
623 // reset the _do_not_unlock_if_synchronized flag
|
|
|
624 __ stbool(G0, do_not_unlock_if_synchronized);
|
|
|
625
|
|
|
626 // check for synchronized methods
|
|
|
627 // Must happen AFTER invocation_counter check, so method is not locked
|
|
|
628 // if counter overflows.
|
|
|
629
|
|
|
630 if (synchronized) {
|
|
|
631 lock_method();
|
|
|
632 // Don't see how G2_thread is preserved here...
|
|
|
633 // __ verify_thread(); QQQ destroys L0,L1 can't use
|
|
|
634 } else {
|
|
|
635 #ifdef ASSERT
|
|
|
636 { Label ok;
|
|
|
637 __ ld_ptr(STATE(_method), G5_method);
|
|
|
638 __ ld(access_flags, O0);
|
|
|
639 __ btst(JVM_ACC_SYNCHRONIZED, O0);
|
|
|
640 __ br( Assembler::zero, false, Assembler::pt, ok);
|
|
|
641 __ delayed()->nop();
|
|
|
642 __ stop("method needs synchronization");
|
|
|
643 __ bind(ok);
|
|
|
644 }
|
|
|
645 #endif // ASSERT
|
|
|
646 }
|
|
|
647
|
|
|
648 // start execution
|
|
|
649
|
|
|
650 // __ verify_thread(); kills L1,L2 can't use at the moment
|
|
|
651
|
|
|
652 // jvmti/jvmpi support
|
|
|
653 __ notify_method_entry();
|
|
|
654
|
|
|
655 // native call
|
|
|
656
|
|
|
657 // (note that O0 is never an oop--at most it is a handle)
|
|
|
658 // It is important not to smash any handles created by this call,
|
|
|
659 // until any oop handle in O0 is dereferenced.
|
|
|
660
|
|
|
661 // (note that the space for outgoing params is preallocated)
|
|
|
662
|
|
|
663 // get signature handler
|
|
|
664
|
|
|
665 Label pending_exception_present;
|
|
|
666
|
|
|
667 { Label L;
|
|
|
668 __ ld_ptr(STATE(_method), G5_method);
|
|
|
669 __ ld_ptr(Address(G5_method, 0, in_bytes(methodOopDesc::signature_handler_offset())), G3_scratch);
|
|
|
670 __ tst(G3_scratch);
|
|
|
671 __ brx(Assembler::notZero, false, Assembler::pt, L);
|
|
|
672 __ delayed()->nop();
|
|
|
673 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), G5_method, false);
|
|
|
674 __ ld_ptr(STATE(_method), G5_method);
|
|
|
675
|
|
|
676 Address exception_addr(G2_thread, 0, in_bytes(Thread::pending_exception_offset()));
|
|
|
677 __ ld_ptr(exception_addr, G3_scratch);
|
|
|
678 __ br_notnull(G3_scratch, false, Assembler::pn, pending_exception_present);
|
|
|
679 __ delayed()->nop();
|
|
|
680 __ ld_ptr(Address(G5_method, 0, in_bytes(methodOopDesc::signature_handler_offset())), G3_scratch);
|
|
|
681 __ bind(L);
|
|
|
682 }
|
|
|
683
|
|
|
684 // Push a new frame so that the args will really be stored in
|
|
|
685 // Copy a few locals across so the new frame has the variables
|
|
|
686 // we need but these values will be dead at the jni call and
|
|
|
687 // therefore not gc volatile like the values in the current
|
|
|
688 // frame (Lstate in particular)
|
|
|
689
|
|
|
690 // Flush the state pointer to the register save area
|
|
|
691 // Which is the only register we need for a stack walk.
|
|
|
692 __ st_ptr(Lstate, SP, (Lstate->sp_offset_in_saved_window() * wordSize) + STACK_BIAS);
|
|
|
693
|
|
|
694 __ mov(Lstate, O1); // Need to pass the state pointer across the frame
|
|
|
695
|
|
|
696 // Calculate current frame size
|
|
|
697 __ sub(SP, FP, O3); // Calculate negative of current frame size
|
|
|
698 __ save(SP, O3, SP); // Allocate an identical sized frame
|
|
|
699
|
|
|
700 __ mov(I1, Lstate); // In the "natural" register.
|
|
|
701
|
|
|
702 // Note I7 has leftover trash. Slow signature handler will fill it in
|
|
|
703 // should we get there. Normal jni call will set reasonable last_Java_pc
|
|
|
704 // below (and fix I7 so the stack trace doesn't have a meaningless frame
|
|
|
705 // in it).
|
|
|
706
|
|
|
707
|
|
|
708 // call signature handler
|
|
|
709 __ ld_ptr(STATE(_method), Lmethod);
|
|
|
710 __ ld_ptr(STATE(_locals), Llocals);
|
|
|
711
|
|
|
712 __ callr(G3_scratch, 0);
|
|
|
713 __ delayed()->nop();
|
|
|
714 __ ld_ptr(STATE(_thread), G2_thread); // restore thread (shouldn't be needed)
|
|
|
715
|
|
|
716 { Label not_static;
|
|
|
717
|
|
|
718 __ ld_ptr(STATE(_method), G5_method);
|
|
|
719 __ ld(access_flags, O0);
|
|
|
720 __ btst(JVM_ACC_STATIC, O0);
|
|
|
721 __ br( Assembler::zero, false, Assembler::pt, not_static);
|
|
|
722 __ delayed()->
|
|
|
723 // get native function entry point(O0 is a good temp until the very end)
|
|
|
724 ld_ptr(Address(G5_method, 0, in_bytes(methodOopDesc::native_function_offset())), O0);
|
|
|
725 // for static methods insert the mirror argument
|
|
|
726 const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes();
|
|
|
727
|
|
|
728 __ ld_ptr(Address(G5_method, 0, in_bytes(methodOopDesc:: constants_offset())), O1);
|
|
|
729 __ ld_ptr(Address(O1, 0, constantPoolOopDesc::pool_holder_offset_in_bytes()), O1);
|
|
|
730 __ ld_ptr(O1, mirror_offset, O1);
|
|
|
731 // where the mirror handle body is allocated:
|
|
|
732 #ifdef ASSERT
|
|
|
733 if (!PrintSignatureHandlers) // do not dirty the output with this
|
|
|
734 { Label L;
|
|
|
735 __ tst(O1);
|
|
|
736 __ brx(Assembler::notZero, false, Assembler::pt, L);
|
|
|
737 __ delayed()->nop();
|
|
|
738 __ stop("mirror is missing");
|
|
|
739 __ bind(L);
|
|
|
740 }
|
|
|
741 #endif // ASSERT
|
|
|
742 __ st_ptr(O1, STATE(_oop_temp));
|
|
|
743 __ add(STATE(_oop_temp), O1); // this is really an LEA not an add
|
|
|
744 __ bind(not_static);
|
|
|
745 }
|
|
|
746
|
|
|
747 // At this point, arguments have been copied off of stack into
|
|
|
748 // their JNI positions, which are O1..O5 and SP[68..].
|
|
|
749 // Oops are boxed in-place on the stack, with handles copied to arguments.
|
|
|
750 // The result handler is in Lscratch. O0 will shortly hold the JNIEnv*.
|
|
|
751
|
|
|
752 #ifdef ASSERT
|
|
|
753 { Label L;
|
|
|
754 __ tst(O0);
|
|
|
755 __ brx(Assembler::notZero, false, Assembler::pt, L);
|
|
|
756 __ delayed()->nop();
|
|
|
757 __ stop("native entry point is missing");
|
|
|
758 __ bind(L);
|
|
|
759 }
|
|
|
760 #endif // ASSERT
|
|
|
761
|
|
|
762 //
|
|
|
763 // setup the java frame anchor
|
|
|
764 //
|
|
|
765 // The scavenge function only needs to know that the PC of this frame is
|
|
|
766 // in the interpreter method entry code, it doesn't need to know the exact
|
|
|
767 // PC and hence we can use O7 which points to the return address from the
|
|
|
768 // previous call in the code stream (signature handler function)
|
|
|
769 //
|
|
|
770 // The other trick is we set last_Java_sp to FP instead of the usual SP because
|
|
|
771 // we have pushed the extra frame in order to protect the volatile register(s)
|
|
|
772 // in that frame when we return from the jni call
|
|
|
773 //
|
|
|
774
|
|
|
775
|
|
|
776 __ set_last_Java_frame(FP, O7);
|
|
|
777 __ mov(O7, I7); // make dummy interpreter frame look like one above,
|
|
|
778 // not meaningless information that'll confuse me.
|
|
|
779
|
|
|
780 // flush the windows now. We don't care about the current (protection) frame
|
|
|
781 // only the outer frames
|
|
|
782
|
|
|
783 __ flush_windows();
|
|
|
784
|
|
|
785 // mark windows as flushed
|
|
|
786 Address flags(G2_thread,
|
|
|
787 0,
|
|
|
788 in_bytes(JavaThread::frame_anchor_offset()) + in_bytes(JavaFrameAnchor::flags_offset()));
|
|
|
789 __ set(JavaFrameAnchor::flushed, G3_scratch);
|
|
|
790 __ st(G3_scratch, flags);
|
|
|
791
|
|
|
792 // Transition from _thread_in_Java to _thread_in_native. We are already safepoint ready.
|
|
|
793
|
|
|
794 Address thread_state(G2_thread, 0, in_bytes(JavaThread::thread_state_offset()));
|
|
|
795 #ifdef ASSERT
|
|
|
796 { Label L;
|
|
|
797 __ ld(thread_state, G3_scratch);
|
|
|
798 __ cmp(G3_scratch, _thread_in_Java);
|
|
|
799 __ br(Assembler::equal, false, Assembler::pt, L);
|
|
|
800 __ delayed()->nop();
|
|
|
801 __ stop("Wrong thread state in native stub");
|
|
|
802 __ bind(L);
|
|
|
803 }
|
|
|
804 #endif // ASSERT
|
|
|
805 __ set(_thread_in_native, G3_scratch);
|
|
|
806 __ st(G3_scratch, thread_state);
|
|
|
807
|
|
|
808 // Call the jni method, using the delay slot to set the JNIEnv* argument.
|
|
|
809 __ callr(O0, 0);
|
|
|
810 __ delayed()->
|
|
|
811 add(G2_thread, in_bytes(JavaThread::jni_environment_offset()), O0);
|
|
|
812 __ ld_ptr(STATE(_thread), G2_thread); // restore thread
|
|
|
813
|
|
|
814 // must we block?
|
|
|
815
|
|
|
816 // Block, if necessary, before resuming in _thread_in_Java state.
|
|
|
817 // In order for GC to work, don't clear the last_Java_sp until after blocking.
|
|
|
818 { Label no_block;
|
|
|
819 Address sync_state(G3_scratch, SafepointSynchronize::address_of_state());
|
|
|
820
|
|
|
821 // Switch thread to "native transition" state before reading the synchronization state.
|
|
|
822 // This additional state is necessary because reading and testing the synchronization
|
|
|
823 // state is not atomic w.r.t. GC, as this scenario demonstrates:
|
|
|
824 // Java thread A, in _thread_in_native state, loads _not_synchronized and is preempted.
|
|
|
825 // VM thread changes sync state to synchronizing and suspends threads for GC.
|
|
|
826 // Thread A is resumed to finish this native method, but doesn't block here since it
|
|
|
827 // didn't see any synchronization is progress, and escapes.
|
|
|
828 __ set(_thread_in_native_trans, G3_scratch);
|
|
|
829 __ st(G3_scratch, thread_state);
|
|
|
830 if(os::is_MP()) {
|
|
|
831 // Write serialization page so VM thread can do a pseudo remote membar.
|
|
|
832 // We use the current thread pointer to calculate a thread specific
|
|
|
833 // offset to write to within the page. This minimizes bus traffic
|
|
|
834 // due to cache line collision.
|
|
|
835 __ serialize_memory(G2_thread, G1_scratch, G3_scratch);
|
|
|
836 }
|
|
|
837 __ load_contents(sync_state, G3_scratch);
|
|
|
838 __ cmp(G3_scratch, SafepointSynchronize::_not_synchronized);
|
|
|
839
|
|
|
840
|
|
|
841 Label L;
|
|
|
842 Address suspend_state(G2_thread, 0, in_bytes(JavaThread::suspend_flags_offset()));
|
|
|
843 __ br(Assembler::notEqual, false, Assembler::pn, L);
|
|
|
844 __ delayed()->
|
|
|
845 ld(suspend_state, G3_scratch);
|
|
|
846 __ cmp(G3_scratch, 0);
|
|
|
847 __ br(Assembler::equal, false, Assembler::pt, no_block);
|
|
|
848 __ delayed()->nop();
|
|
|
849 __ bind(L);
|
|
|
850
|
|
|
851 // Block. Save any potential method result value before the operation and
|
|
|
852 // use a leaf call to leave the last_Java_frame setup undisturbed.
|
|
|
853 save_native_result();
|
|
|
854 __ call_VM_leaf(noreg,
|
|
|
855 CAST_FROM_FN_PTR(address, JavaThread::check_safepoint_and_suspend_for_native_trans),
|
|
|
856 G2_thread);
|
|
|
857 __ ld_ptr(STATE(_thread), G2_thread); // restore thread
|
|
|
858 // Restore any method result value
|
|
|
859 restore_native_result();
|
|
|
860 __ bind(no_block);
|
|
|
861 }
|
|
|
862
|
|
|
863 // Clear the frame anchor now
|
|
|
864
|
|
|
865 __ reset_last_Java_frame();
|
|
|
866
|
|
|
867 // Move the result handler address
|
|
|
868 __ mov(Lscratch, G3_scratch);
|
|
|
869 // return possible result to the outer frame
|
|
|
870 #ifndef __LP64
|
|
|
871 __ mov(O0, I0);
|
|
|
872 __ restore(O1, G0, O1);
|
|
|
873 #else
|
|
|
874 __ restore(O0, G0, O0);
|
|
|
875 #endif /* __LP64 */
|
|
|
876
|
|
|
877 // Move result handler to expected register
|
|
|
878 __ mov(G3_scratch, Lscratch);
|
|
|
879
|
|
|
880
|
|
|
881 // thread state is thread_in_native_trans. Any safepoint blocking has
|
|
|
882 // happened in the trampoline we are ready to switch to thread_in_Java.
|
|
|
883
|
|
|
884 __ set(_thread_in_Java, G3_scratch);
|
|
|
885 __ st(G3_scratch, thread_state);
|
|
|
886
|
|
|
887 // If we have an oop result store it where it will be safe for any further gc
|
|
|
888 // until we return now that we've released the handle it might be protected by
|
|
|
889
|
|
|
890 {
|
|
|
891 Label no_oop, store_result;
|
|
|
892
|
|
|
893 __ set((intptr_t)AbstractInterpreter::result_handler(T_OBJECT), G3_scratch);
|
|
|
894 __ cmp(G3_scratch, Lscratch);
|
|
|
895 __ brx(Assembler::notEqual, false, Assembler::pt, no_oop);
|
|
|
896 __ delayed()->nop();
|
|
|
897 __ addcc(G0, O0, O0);
|
|
|
898 __ brx(Assembler::notZero, true, Assembler::pt, store_result); // if result is not NULL:
|
|
|
899 __ delayed()->ld_ptr(O0, 0, O0); // unbox it
|
|
|
900 __ mov(G0, O0);
|
|
|
901
|
|
|
902 __ bind(store_result);
|
|
|
903 // Store it where gc will look for it and result handler expects it.
|
|
|
904 __ st_ptr(O0, STATE(_oop_temp));
|
|
|
905
|
|
|
906 __ bind(no_oop);
|
|
|
907
|
|
|
908 }
|
|
|
909
|
|
|
910 // reset handle block
|
|
|
911 __ ld_ptr(G2_thread, in_bytes(JavaThread::active_handles_offset()), G3_scratch);
|
|
|
912 __ st_ptr(G0, G3_scratch, JNIHandleBlock::top_offset_in_bytes());
|
|
|
913
|
|
|
914
|
|
|
915 // handle exceptions (exception handling will handle unlocking!)
|
|
|
916 { Label L;
|
|
|
917 Address exception_addr (G2_thread, 0, in_bytes(Thread::pending_exception_offset()));
|
|
|
918
|
|
|
919 __ ld_ptr(exception_addr, Gtemp);
|
|
|
920 __ tst(Gtemp);
|
|
|
921 __ brx(Assembler::equal, false, Assembler::pt, L);
|
|
|
922 __ delayed()->nop();
|
|
|
923 __ bind(pending_exception_present);
|
|
|
924 // With c++ interpreter we just leave it pending caller will do the correct thing. However...
|
|
|
925 // Like x86 we ignore the result of the native call and leave the method locked. This
|
|
|
926 // seems wrong to leave things locked.
|
|
|
927
|
|
|
928 __ br(Assembler::always, false, Assembler::pt, StubRoutines::forward_exception_entry(), relocInfo::runtime_call_type);
|
|
|
929 __ delayed()->restore(I5_savedSP, G0, SP); // remove interpreter frame
|
|
|
930
|
|
|
931 __ bind(L);
|
|
|
932 }
|
|
|
933
|
|
|
934 // jvmdi/jvmpi support (preserves thread register)
|
|
|
935 __ notify_method_exit(true, ilgl, InterpreterMacroAssembler::NotifyJVMTI);
|
|
|
936
|
|
|
937 if (synchronized) {
|
|
|
938 // save and restore any potential method result value around the unlocking operation
|
|
|
939 save_native_result();
|
|
|
940
|
|
|
941 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
|
|
|
942 // Get the initial monitor we allocated
|
|
|
943 __ sub(Lstate, entry_size, O1); // initial monitor
|
|
|
944 __ unlock_object(O1);
|
|
|
945 restore_native_result();
|
|
|
946 }
|
|
|
947
|
|
|
948 #if defined(COMPILER2) && !defined(_LP64)
|
|
|
949
|
|
|
950 // C2 expects long results in G1 we can't tell if we're returning to interpreted
|
|
|
951 // or compiled so just be safe.
|
|
|
952
|
|
|
953 __ sllx(O0, 32, G1); // Shift bits into high G1
|
|
|
954 __ srl (O1, 0, O1); // Zero extend O1
|
|
|
955 __ or3 (O1, G1, G1); // OR 64 bits into G1
|
|
|
956
|
|
|
957 #endif /* COMPILER2 && !_LP64 */
|
|
|
958
|
|
|
959 #ifdef ASSERT
|
|
|
960 {
|
|
|
961 Label ok;
|
|
|
962 __ cmp(I5_savedSP, FP);
|
|
|
963 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, ok);
|
|
|
964 __ delayed()->nop();
|
|
|
965 __ stop("bad I5_savedSP value");
|
|
|
966 __ should_not_reach_here();
|
|
|
967 __ bind(ok);
|
|
|
968 }
|
|
|
969 #endif
|
|
|
970 // Calls result handler which POPS FRAME
|
|
|
971 if (TraceJumps) {
|
|
|
972 // Move target to register that is recordable
|
|
|
973 __ mov(Lscratch, G3_scratch);
|
|
|
974 __ JMP(G3_scratch, 0);
|
|
|
975 } else {
|
|
|
976 __ jmp(Lscratch, 0);
|
|
|
977 }
|
|
|
978 __ delayed()->nop();
|
|
|
979
|
|
|
980 if (inc_counter) {
|
|
|
981 // handle invocation counter overflow
|
|
|
982 __ bind(invocation_counter_overflow);
|
|
|
983 generate_counter_overflow(Lcontinue);
|
|
|
984 }
|
|
|
985
|
|
|
986
|
|
|
987 return entry;
|
|
|
988 }
|
|
|
989
|
|
|
990 void CppInterpreterGenerator::generate_compute_interpreter_state(const Register state,
|
|
|
991 const Register prev_state,
|
|
|
992 bool native) {
|
|
|
993
|
|
|
994 // On entry
|
|
|
995 // G5_method - caller's method
|
|
|
996 // Gargs - points to initial parameters (i.e. locals[0])
|
|
|
997 // G2_thread - valid? (C1 only??)
|
|
|
998 // "prev_state" - contains any previous frame manager state which we must save a link
|
|
|
999 //
|
|
|
1000 // On return
|
|
|
1001 // "state" is a pointer to the newly allocated state object. We must allocate and initialize
|
|
|
1002 // a new interpretState object and the method expression stack.
|
|
|
1003
|
|
|
1004 assert_different_registers(state, prev_state);
|
|
|
1005 assert_different_registers(prev_state, G3_scratch);
|
|
|
1006 const Register Gtmp = G3_scratch;
|
|
|
1007 const Address constants (G5_method, 0, in_bytes(methodOopDesc::constants_offset()));
|
|
|
1008 const Address access_flags (G5_method, 0, in_bytes(methodOopDesc::access_flags_offset()));
|
|
|
1009 const Address size_of_parameters(G5_method, 0, in_bytes(methodOopDesc::size_of_parameters_offset()));
|
|
|
1010 const Address max_stack (G5_method, 0, in_bytes(methodOopDesc::max_stack_offset()));
|
|
|
1011 const Address size_of_locals (G5_method, 0, in_bytes(methodOopDesc::size_of_locals_offset()));
|
|
|
1012
|
|
|
1013 // slop factor is two extra slots on the expression stack so that
|
|
|
1014 // we always have room to store a result when returning from a call without parameters
|
|
|
1015 // that returns a result.
|
|
|
1016
|
|
|
1017 const int slop_factor = 2*wordSize;
|
|
|
1018
|
|
|
1019 const int fixed_size = ((sizeof(BytecodeInterpreter) + slop_factor) >> LogBytesPerWord) + // what is the slop factor?
|
|
710
|
1020 //6815692//methodOopDesc::extra_stack_words() + // extra push slots for MH adapters
|
|
0
|
1021 frame::memory_parameter_word_sp_offset + // register save area + param window
|
|
|
1022 (native ? frame::interpreter_frame_extra_outgoing_argument_words : 0); // JNI, class
|
|
|
1023
|
|
|
1024 // XXX G5_method valid
|
|
|
1025
|
|
|
1026 // Now compute new frame size
|
|
|
1027
|
|
|
1028 if (native) {
|
|
|
1029 __ lduh( size_of_parameters, Gtmp );
|
|
|
1030 __ calc_mem_param_words(Gtmp, Gtmp); // space for native call parameters passed on the stack in words
|
|
|
1031 } else {
|
|
|
1032 __ lduh(max_stack, Gtmp); // Full size expression stack
|
|
|
1033 }
|
|
|
1034 __ add(Gtmp, fixed_size, Gtmp); // plus the fixed portion
|
|
|
1035
|
|
|
1036 __ neg(Gtmp); // negative space for stack/parameters in words
|
|
|
1037 __ and3(Gtmp, -WordsPerLong, Gtmp); // make multiple of 2 (SP must be 2-word aligned)
|
|
|
1038 __ sll(Gtmp, LogBytesPerWord, Gtmp); // negative space for frame in bytes
|
|
|
1039
|
|
|
1040 // Need to do stack size check here before we fault on large frames
|
|
|
1041
|
|
|
1042 Label stack_ok;
|
|
|
1043
|
|
|
1044 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages :
|
|
|
1045 (StackRedPages+StackYellowPages);
|
|
|
1046
|
|
|
1047
|
|
|
1048 __ ld_ptr(G2_thread, in_bytes(Thread::stack_base_offset()), O0);
|
|
|
1049 __ ld_ptr(G2_thread, in_bytes(Thread::stack_size_offset()), O1);
|
|
|
1050 // compute stack bottom
|
|
|
1051 __ sub(O0, O1, O0);
|
|
|
1052
|
|
|
1053 // Avoid touching the guard pages
|
|
|
1054 // Also a fudge for frame size of BytecodeInterpreter::run
|
|
|
1055 // It varies from 1k->4k depending on build type
|
|
|
1056 const int fudge = 6 * K;
|
|
|
1057
|
|
|
1058 __ set(fudge + (max_pages * os::vm_page_size()), O1);
|
|
|
1059
|
|
|
1060 __ add(O0, O1, O0);
|
|
|
1061 __ sub(O0, Gtmp, O0);
|
|
|
1062 __ cmp(SP, O0);
|
|
|
1063 __ brx(Assembler::greaterUnsigned, false, Assembler::pt, stack_ok);
|
|
|
1064 __ delayed()->nop();
|
|
|
1065
|
|
|
1066 // throw exception return address becomes throwing pc
|
|
|
1067
|
|
|
1068 __ call_VM(Oexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_StackOverflowError));
|
|
|
1069 __ stop("never reached");
|
|
|
1070
|
|
|
1071 __ bind(stack_ok);
|
|
|
1072
|
|
|
1073 __ save(SP, Gtmp, SP); // setup new frame and register window
|
|
|
1074
|
|
|
1075 // New window I7 call_stub or previous activation
|
|
|
1076 // O6 - register save area, BytecodeInterpreter just below it, args/locals just above that
|
|
|
1077 //
|
|
|
1078 __ sub(FP, sizeof(BytecodeInterpreter), state); // Point to new Interpreter state
|
|
|
1079 __ add(state, STACK_BIAS, state ); // Account for 64bit bias
|
|
|
1080
|
|
|
1081 #define XXX_STATE(field_name) state, in_bytes(byte_offset_of(BytecodeInterpreter, field_name))
|
|
|
1082
|
|
|
1083 // Initialize a new Interpreter state
|
|
|
1084 // orig_sp - caller's original sp
|
|
|
1085 // G2_thread - thread
|
|
|
1086 // Gargs - &locals[0] (unbiased?)
|
|
|
1087 // G5_method - method
|
|
|
1088 // SP (biased) - accounts for full size java stack, BytecodeInterpreter object, register save area, and register parameter save window
|
|
|
1089
|
|
|
1090
|
|
|
1091 __ set(0xdead0004, O1);
|
|
|
1092
|
|
|
1093
|
|
|
1094 __ st_ptr(Gargs, XXX_STATE(_locals));
|
|
|
1095 __ st_ptr(G0, XXX_STATE(_oop_temp));
|
|
|
1096
|
|
|
1097 __ st_ptr(state, XXX_STATE(_self_link)); // point to self
|
|
|
1098 __ st_ptr(prev_state->after_save(), XXX_STATE(_prev_link)); // Chain interpreter states
|
|
|
1099 __ st_ptr(G2_thread, XXX_STATE(_thread)); // Store javathread
|
|
|
1100
|
|
|
1101 if (native) {
|
|
|
1102 __ st_ptr(G0, XXX_STATE(_bcp));
|
|
|
1103 } else {
|
|
|
1104 __ ld_ptr(G5_method, in_bytes(methodOopDesc::const_offset()), O2); // get constMethodOop
|
|
|
1105 __ add(O2, in_bytes(constMethodOopDesc::codes_offset()), O2); // get bcp
|
|
|
1106 __ st_ptr(O2, XXX_STATE(_bcp));
|
|
|
1107 }
|
|
|
1108
|
|
|
1109 __ st_ptr(G0, XXX_STATE(_mdx));
|
|
|
1110 __ st_ptr(G5_method, XXX_STATE(_method));
|
|
|
1111
|
|
|
1112 __ set((int) BytecodeInterpreter::method_entry, O1);
|
|
|
1113 __ st(O1, XXX_STATE(_msg));
|
|
|
1114
|
|
|
1115 __ ld_ptr(constants, O3);
|
|
|
1116 __ ld_ptr(O3, constantPoolOopDesc::cache_offset_in_bytes(), O2);
|
|
|
1117 __ st_ptr(O2, XXX_STATE(_constants));
|
|
|
1118
|
|
|
1119 __ st_ptr(G0, XXX_STATE(_result._to_call._callee));
|
|
|
1120
|
|
|
1121 // Monitor base is just start of BytecodeInterpreter object;
|
|
|
1122 __ mov(state, O2);
|
|
|
1123 __ st_ptr(O2, XXX_STATE(_monitor_base));
|
|
|
1124
|
|
|
1125 // Do we need a monitor for synchonized method?
|
|
|
1126 {
|
|
|
1127 __ ld(access_flags, O1);
|
|
|
1128 Label done;
|
|
|
1129 Label got_obj;
|
|
|
1130 __ btst(JVM_ACC_SYNCHRONIZED, O1);
|
|
|
1131 __ br( Assembler::zero, false, Assembler::pt, done);
|
|
|
1132
|
|
|
1133 const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes();
|
|
|
1134 __ delayed()->btst(JVM_ACC_STATIC, O1);
|
|
|
1135 __ ld_ptr(XXX_STATE(_locals), O1);
|
|
|
1136 __ br( Assembler::zero, true, Assembler::pt, got_obj);
|
|
|
1137 __ delayed()->ld_ptr(O1, 0, O1); // get receiver for not-static case
|
|
|
1138 __ ld_ptr(constants, O1);
|
|
|
1139 __ ld_ptr( O1, constantPoolOopDesc::pool_holder_offset_in_bytes(), O1);
|
|
|
1140 // lock the mirror, not the klassOop
|
|
|
1141 __ ld_ptr( O1, mirror_offset, O1);
|
|
|
1142
|
|
|
1143 __ bind(got_obj);
|
|
|
1144
|
|
|
1145 #ifdef ASSERT
|
|
|
1146 __ tst(O1);
|
|
|
1147 __ breakpoint_trap(Assembler::zero);
|
|
|
1148 #endif // ASSERT
|
|
|
1149
|
|
|
1150 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
|
|
|
1151 __ sub(SP, entry_size, SP); // account for initial monitor
|
|
|
1152 __ sub(O2, entry_size, O2); // initial monitor
|
|
|
1153 __ st_ptr(O1, O2, BasicObjectLock::obj_offset_in_bytes()); // and allocate it for interpreter use
|
|
|
1154 __ bind(done);
|
|
|
1155 }
|
|
|
1156
|
|
|
1157 // Remember initial frame bottom
|
|
|
1158
|
|
|
1159 __ st_ptr(SP, XXX_STATE(_frame_bottom));
|
|
|
1160
|
|
|
1161 __ st_ptr(O2, XXX_STATE(_stack_base));
|
|
|
1162
|
|
|
1163 __ sub(O2, wordSize, O2); // prepush
|
|
|
1164 __ st_ptr(O2, XXX_STATE(_stack)); // PREPUSH
|
|
|
1165
|
|
|
1166 __ lduh(max_stack, O3); // Full size expression stack
|
|
710
|
1167 guarantee(!EnableMethodHandles, "no support yet for java.dyn.MethodHandle"); //6815692
|
|
|
1168 //6815692//if (EnableMethodHandles)
|
|
|
1169 //6815692// __ inc(O3, methodOopDesc::extra_stack_entries());
|
|
0
|
1170 __ sll(O3, LogBytesPerWord, O3);
|
|
|
1171 __ sub(O2, O3, O3);
|
|
|
1172 // __ sub(O3, wordSize, O3); // so prepush doesn't look out of bounds
|
|
|
1173 __ st_ptr(O3, XXX_STATE(_stack_limit));
|
|
|
1174
|
|
|
1175 if (!native) {
|
|
|
1176 //
|
|
|
1177 // Code to initialize locals
|
|
|
1178 //
|
|
|
1179 Register init_value = noreg; // will be G0 if we must clear locals
|
|
|
1180 // Now zero locals
|
|
|
1181 if (true /* zerolocals */ || ClearInterpreterLocals) {
|
|
|
1182 // explicitly initialize locals
|
|
|
1183 init_value = G0;
|
|
|
1184 } else {
|
|
|
1185 #ifdef ASSERT
|
|
|
1186 // initialize locals to a garbage pattern for better debugging
|
|
|
1187 init_value = O3;
|
|
|
1188 __ set( 0x0F0F0F0F, init_value );
|
|
|
1189 #endif // ASSERT
|
|
|
1190 }
|
|
|
1191 if (init_value != noreg) {
|
|
|
1192 Label clear_loop;
|
|
|
1193
|
|
|
1194 // NOTE: If you change the frame layout, this code will need to
|
|
|
1195 // be updated!
|
|
|
1196 __ lduh( size_of_locals, O2 );
|
|
|
1197 __ lduh( size_of_parameters, O1 );
|
|
|
1198 __ sll( O2, LogBytesPerWord, O2);
|
|
|
1199 __ sll( O1, LogBytesPerWord, O1 );
|
|
|
1200 __ ld_ptr(XXX_STATE(_locals), L2_scratch);
|
|
|
1201 __ sub( L2_scratch, O2, O2 );
|
|
|
1202 __ sub( L2_scratch, O1, O1 );
|
|
|
1203
|
|
|
1204 __ bind( clear_loop );
|
|
|
1205 __ inc( O2, wordSize );
|
|
|
1206
|
|
|
1207 __ cmp( O2, O1 );
|
|
|
1208 __ br( Assembler::lessEqualUnsigned, true, Assembler::pt, clear_loop );
|
|
|
1209 __ delayed()->st_ptr( init_value, O2, 0 );
|
|
|
1210 }
|
|
|
1211 }
|
|
|
1212 }
|
|
|
1213 // Find preallocated monitor and lock method (C++ interpreter)
|
|
|
1214 //
|
|
|
1215 void InterpreterGenerator::lock_method(void) {
|
|
|
1216 // Lock the current method.
|
|
|
1217 // Destroys registers L2_scratch, L3_scratch, O0
|
|
|
1218 //
|
|
|
1219 // Find everything relative to Lstate
|
|
|
1220
|
|
|
1221 #ifdef ASSERT
|
|
|
1222 __ ld_ptr(STATE(_method), L2_scratch);
|
|
|
1223 __ ld(L2_scratch, in_bytes(methodOopDesc::access_flags_offset()), O0);
|
|
|
1224
|
|
|
1225 { Label ok;
|
|
|
1226 __ btst(JVM_ACC_SYNCHRONIZED, O0);
|
|
|
1227 __ br( Assembler::notZero, false, Assembler::pt, ok);
|
|
|
1228 __ delayed()->nop();
|
|
|
1229 __ stop("method doesn't need synchronization");
|
|
|
1230 __ bind(ok);
|
|
|
1231 }
|
|
|
1232 #endif // ASSERT
|
|
|
1233
|
|
|
1234 // monitor is already allocated at stack base
|
|
|
1235 // and the lockee is already present
|
|
|
1236 __ ld_ptr(STATE(_stack_base), L2_scratch);
|
|
|
1237 __ ld_ptr(L2_scratch, BasicObjectLock::obj_offset_in_bytes(), O0); // get object
|
|
|
1238 __ lock_object(L2_scratch, O0);
|
|
|
1239
|
|
|
1240 }
|
|
|
1241
|
|
|
1242 // Generate code for handling resuming a deopted method
|
|
|
1243 void CppInterpreterGenerator::generate_deopt_handling() {
|
|
|
1244
|
|
|
1245 Label return_from_deopt_common;
|
|
|
1246
|
|
|
1247 // deopt needs to jump to here to enter the interpreter (return a result)
|
|
|
1248 deopt_frame_manager_return_atos = __ pc();
|
|
|
1249
|
|
|
1250 // O0/O1 live
|
|
|
1251 __ ba(false, return_from_deopt_common);
|
|
|
1252 __ delayed()->set(AbstractInterpreter::BasicType_as_index(T_OBJECT), L3_scratch); // Result stub address array index
|
|
|
1253
|
|
|
1254
|
|
|
1255 // deopt needs to jump to here to enter the interpreter (return a result)
|
|
|
1256 deopt_frame_manager_return_btos = __ pc();
|
|
|
1257
|
|
|
1258 // O0/O1 live
|
|
|
1259 __ ba(false, return_from_deopt_common);
|
|
|
1260 __ delayed()->set(AbstractInterpreter::BasicType_as_index(T_BOOLEAN), L3_scratch); // Result stub address array index
|
|
|
1261
|
|
|
1262 // deopt needs to jump to here to enter the interpreter (return a result)
|
|
|
1263 deopt_frame_manager_return_itos = __ pc();
|
|
|
1264
|
|
|
1265 // O0/O1 live
|
|
|
1266 __ ba(false, return_from_deopt_common);
|
|
|
1267 __ delayed()->set(AbstractInterpreter::BasicType_as_index(T_INT), L3_scratch); // Result stub address array index
|
|
|
1268
|
|
|
1269 // deopt needs to jump to here to enter the interpreter (return a result)
|
|
|
1270
|
|
|
1271 deopt_frame_manager_return_ltos = __ pc();
|
|
|
1272 #if !defined(_LP64) && defined(COMPILER2)
|
|
|
1273 // All return values are where we want them, except for Longs. C2 returns
|
|
|
1274 // longs in G1 in the 32-bit build whereas the interpreter wants them in O0/O1.
|
|
|
1275 // Since the interpreter will return longs in G1 and O0/O1 in the 32bit
|
|
|
1276 // build even if we are returning from interpreted we just do a little
|
|
|
1277 // stupid shuffing.
|
|
|
1278 // Note: I tried to make c2 return longs in O0/O1 and G1 so we wouldn't have to
|
|
|
1279 // do this here. Unfortunately if we did a rethrow we'd see an machepilog node
|
|
|
1280 // first which would move g1 -> O0/O1 and destroy the exception we were throwing.
|
|
|
1281
|
|
|
1282 __ srl (G1, 0,O1);
|
|
|
1283 __ srlx(G1,32,O0);
|
|
|
1284 #endif /* !_LP64 && COMPILER2 */
|
|
|
1285 // O0/O1 live
|
|
|
1286 __ ba(false, return_from_deopt_common);
|
|
|
1287 __ delayed()->set(AbstractInterpreter::BasicType_as_index(T_LONG), L3_scratch); // Result stub address array index
|
|
|
1288
|
|
|
1289 // deopt needs to jump to here to enter the interpreter (return a result)
|
|
|
1290
|
|
|
1291 deopt_frame_manager_return_ftos = __ pc();
|
|
|
1292 // O0/O1 live
|
|
|
1293 __ ba(false, return_from_deopt_common);
|
|
|
1294 __ delayed()->set(AbstractInterpreter::BasicType_as_index(T_FLOAT), L3_scratch); // Result stub address array index
|
|
|
1295
|
|
|
1296 // deopt needs to jump to here to enter the interpreter (return a result)
|
|
|
1297 deopt_frame_manager_return_dtos = __ pc();
|
|
|
1298
|
|
|
1299 // O0/O1 live
|
|
|
1300 __ ba(false, return_from_deopt_common);
|
|
|
1301 __ delayed()->set(AbstractInterpreter::BasicType_as_index(T_DOUBLE), L3_scratch); // Result stub address array index
|
|
|
1302
|
|
|
1303 // deopt needs to jump to here to enter the interpreter (return a result)
|
|
|
1304 deopt_frame_manager_return_vtos = __ pc();
|
|
|
1305
|
|
|
1306 // O0/O1 live
|
|
|
1307 __ set(AbstractInterpreter::BasicType_as_index(T_VOID), L3_scratch);
|
|
|
1308
|
|
|
1309 // Deopt return common
|
|
|
1310 // an index is present that lets us move any possible result being
|
|
|
1311 // return to the interpreter's stack
|
|
|
1312 //
|
|
|
1313 __ bind(return_from_deopt_common);
|
|
|
1314
|
|
|
1315 // Result if any is in native abi result (O0..O1/F0..F1). The java expression
|
|
|
1316 // stack is in the state that the calling convention left it.
|
|
|
1317 // Copy the result from native abi result and place it on java expression stack.
|
|
|
1318
|
|
|
1319 // Current interpreter state is present in Lstate
|
|
|
1320
|
|
|
1321 // Get current pre-pushed top of interpreter stack
|
|
|
1322 // Any result (if any) is in native abi
|
|
|
1323 // result type index is in L3_scratch
|
|
|
1324
|
|
|
1325 __ ld_ptr(STATE(_stack), L1_scratch); // get top of java expr stack
|
|
|
1326
|
|
|
1327 __ set((intptr_t)CppInterpreter::_tosca_to_stack, L4_scratch);
|
|
|
1328 __ sll(L3_scratch, LogBytesPerWord, L3_scratch);
|
|
|
1329 __ ld_ptr(L4_scratch, L3_scratch, Lscratch); // get typed result converter address
|
|
|
1330 __ jmpl(Lscratch, G0, O7); // and convert it
|
|
|
1331 __ delayed()->nop();
|
|
|
1332
|
|
|
1333 // L1_scratch points to top of stack (prepushed)
|
|
|
1334 __ st_ptr(L1_scratch, STATE(_stack));
|
|
|
1335 }
|
|
|
1336
|
|
|
1337 // Generate the code to handle a more_monitors message from the c++ interpreter
|
|
|
1338 void CppInterpreterGenerator::generate_more_monitors() {
|
|
|
1339
|
|
|
1340 Label entry, loop;
|
|
|
1341 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
|
|
|
1342 // 1. compute new pointers // esp: old expression stack top
|
|
|
1343 __ delayed()->ld_ptr(STATE(_stack_base), L4_scratch); // current expression stack bottom
|
|
|
1344 __ sub(L4_scratch, entry_size, L4_scratch);
|
|
|
1345 __ st_ptr(L4_scratch, STATE(_stack_base));
|
|
|
1346
|
|
|
1347 __ sub(SP, entry_size, SP); // Grow stack
|
|
|
1348 __ st_ptr(SP, STATE(_frame_bottom));
|
|
|
1349
|
|
|
1350 __ ld_ptr(STATE(_stack_limit), L2_scratch);
|
|
|
1351 __ sub(L2_scratch, entry_size, L2_scratch);
|
|
|
1352 __ st_ptr(L2_scratch, STATE(_stack_limit));
|
|
|
1353
|
|
|
1354 __ ld_ptr(STATE(_stack), L1_scratch); // Get current stack top
|
|
|
1355 __ sub(L1_scratch, entry_size, L1_scratch);
|
|
|
1356 __ st_ptr(L1_scratch, STATE(_stack));
|
|
|
1357 __ ba(false, entry);
|
|
|
1358 __ delayed()->add(L1_scratch, wordSize, L1_scratch); // first real entry (undo prepush)
|
|
|
1359
|
|
|
1360 // 2. move expression stack
|
|
|
1361
|
|
|
1362 __ bind(loop);
|
|
|
1363 __ st_ptr(L3_scratch, Address(L1_scratch, 0));
|
|
|
1364 __ add(L1_scratch, wordSize, L1_scratch);
|
|
|
1365 __ bind(entry);
|
|
|
1366 __ cmp(L1_scratch, L4_scratch);
|
|
|
1367 __ br(Assembler::notEqual, false, Assembler::pt, loop);
|
|
|
1368 __ delayed()->ld_ptr(L1_scratch, entry_size, L3_scratch);
|
|
|
1369
|
|
|
1370 // now zero the slot so we can find it.
|
|
123
|
1371 __ st_ptr(G0, L4_scratch, BasicObjectLock::obj_offset_in_bytes());
|
|
0
|
1372
|
|
|
1373 }
|
|
|
1374
|
|
|
1375 // Initial entry to C++ interpreter from the call_stub.
|
|
|
1376 // This entry point is called the frame manager since it handles the generation
|
|
|
1377 // of interpreter activation frames via requests directly from the vm (via call_stub)
|
|
|
1378 // and via requests from the interpreter. The requests from the call_stub happen
|
|
|
1379 // directly thru the entry point. Requests from the interpreter happen via returning
|
|
|
1380 // from the interpreter and examining the message the interpreter has returned to
|
|
|
1381 // the frame manager. The frame manager can take the following requests:
|
|
|
1382
|
|
|
1383 // NO_REQUEST - error, should never happen.
|
|
|
1384 // MORE_MONITORS - need a new monitor. Shuffle the expression stack on down and
|
|
|
1385 // allocate a new monitor.
|
|
|
1386 // CALL_METHOD - setup a new activation to call a new method. Very similar to what
|
|
|
1387 // happens during entry during the entry via the call stub.
|
|
|
1388 // RETURN_FROM_METHOD - remove an activation. Return to interpreter or call stub.
|
|
|
1389 //
|
|
|
1390 // Arguments:
|
|
|
1391 //
|
|
|
1392 // ebx: methodOop
|
|
|
1393 // ecx: receiver - unused (retrieved from stack as needed)
|
|
|
1394 // esi: previous frame manager state (NULL from the call_stub/c1/c2)
|
|
|
1395 //
|
|
|
1396 //
|
|
|
1397 // Stack layout at entry
|
|
|
1398 //
|
|
|
1399 // [ return address ] <--- esp
|
|
|
1400 // [ parameter n ]
|
|
|
1401 // ...
|
|
|
1402 // [ parameter 1 ]
|
|
|
1403 // [ expression stack ]
|
|
|
1404 //
|
|
|
1405 //
|
|
|
1406 // We are free to blow any registers we like because the call_stub which brought us here
|
|
|
1407 // initially has preserved the callee save registers already.
|
|
|
1408 //
|
|
|
1409 //
|
|
|
1410
|
|
|
1411 static address interpreter_frame_manager = NULL;
|
|
|
1412
|
|
|
1413 #ifdef ASSERT
|
|
|
1414 #define VALIDATE_STATE(scratch, marker) \
|
|
|
1415 { \
|
|
|
1416 Label skip; \
|
|
|
1417 __ ld_ptr(STATE(_self_link), scratch); \
|
|
|
1418 __ cmp(Lstate, scratch); \
|
|
|
1419 __ brx(Assembler::equal, false, Assembler::pt, skip); \
|
|
|
1420 __ delayed()->nop(); \
|
|
|
1421 __ breakpoint_trap(); \
|
|
|
1422 __ emit_long(marker); \
|
|
|
1423 __ bind(skip); \
|
|
|
1424 }
|
|
|
1425 #else
|
|
|
1426 #define VALIDATE_STATE(scratch, marker)
|
|
|
1427 #endif /* ASSERT */
|
|
|
1428
|
|
|
1429 void CppInterpreterGenerator::adjust_callers_stack(Register args) {
|
|
|
1430 //
|
|
|
1431 // Adjust caller's stack so that all the locals can be contiguous with
|
|
|
1432 // the parameters.
|
|
|
1433 // Worries about stack overflow make this a pain.
|
|
|
1434 //
|
|
|
1435 // Destroys args, G3_scratch, G3_scratch
|
|
|
1436 // In/Out O5_savedSP (sender's original SP)
|
|
|
1437 //
|
|
|
1438 // assert_different_registers(state, prev_state);
|
|
|
1439 const Register Gtmp = G3_scratch;
|
|
|
1440 const Register tmp = O2;
|
|
|
1441 const Address size_of_parameters(G5_method, 0, in_bytes(methodOopDesc::size_of_parameters_offset()));
|
|
|
1442 const Address size_of_locals (G5_method, 0, in_bytes(methodOopDesc::size_of_locals_offset()));
|
|
|
1443
|
|
|
1444 __ lduh(size_of_parameters, tmp);
|
|
|
1445 __ sll(tmp, LogBytesPerWord, Gtmp); // parameter size in bytes
|
|
|
1446 __ add(args, Gtmp, Gargs); // points to first local + BytesPerWord
|
|
|
1447 // NEW
|
|
|
1448 __ add(Gargs, -wordSize, Gargs); // points to first local[0]
|
|
|
1449 // determine extra space for non-argument locals & adjust caller's SP
|
|
|
1450 // Gtmp1: parameter size in words
|
|
|
1451 __ lduh(size_of_locals, Gtmp);
|
|
|
1452 __ compute_extra_locals_size_in_bytes(tmp, Gtmp, Gtmp);
|
|
|
1453
|
|
|
1454 #if 1
|
|
|
1455 // c2i adapters place the final interpreter argument in the register save area for O0/I0
|
|
|
1456 // the call_stub will place the final interpreter argument at
|
|
|
1457 // frame::memory_parameter_word_sp_offset. This is mostly not noticable for either asm
|
|
|
1458 // or c++ interpreter. However with the c++ interpreter when we do a recursive call
|
|
|
1459 // and try to make it look good in the debugger we will store the argument to
|
|
|
1460 // RecursiveInterpreterActivation in the register argument save area. Without allocating
|
|
|
1461 // extra space for the compiler this will overwrite locals in the local array of the
|
|
|
1462 // interpreter.
|
|
|
1463 // QQQ still needed with frameless adapters???
|
|
|
1464
|
|
|
1465 const int c2i_adjust_words = frame::memory_parameter_word_sp_offset - frame::callee_register_argument_save_area_sp_offset;
|
|
|
1466
|
|
|
1467 __ add(Gtmp, c2i_adjust_words*wordSize, Gtmp);
|
|
|
1468 #endif // 1
|
|
|
1469
|
|
|
1470
|
|
|
1471 __ sub(SP, Gtmp, SP); // just caller's frame for the additional space we need.
|
|
|
1472 }
|
|
|
1473
|
|
|
1474 address InterpreterGenerator::generate_normal_entry(bool synchronized) {
|
|
|
1475
|
|
|
1476 // G5_method: methodOop
|
|
|
1477 // G2_thread: thread (unused)
|
|
|
1478 // Gargs: bottom of args (sender_sp)
|
|
|
1479 // O5: sender's sp
|
|
|
1480
|
|
|
1481 // A single frame manager is plenty as we don't specialize for synchronized. We could and
|
|
|
1482 // the code is pretty much ready. Would need to change the test below and for good measure
|
|
|
1483 // modify generate_interpreter_state to only do the (pre) sync stuff stuff for synchronized
|
|
|
1484 // routines. Not clear this is worth it yet.
|
|
|
1485
|
|
|
1486 if (interpreter_frame_manager) {
|
|
|
1487 return interpreter_frame_manager;
|
|
|
1488 }
|
|
|
1489
|
|
|
1490 __ bind(frame_manager_entry);
|
|
|
1491
|
|
|
1492 // the following temporary registers are used during frame creation
|
|
|
1493 const Register Gtmp1 = G3_scratch;
|
|
|
1494 // const Register Lmirror = L1; // native mirror (native calls only)
|
|
|
1495
|
|
|
1496 const Address constants (G5_method, 0, in_bytes(methodOopDesc::constants_offset()));
|
|
|
1497 const Address access_flags (G5_method, 0, in_bytes(methodOopDesc::access_flags_offset()));
|
|
|
1498 const Address size_of_parameters(G5_method, 0, in_bytes(methodOopDesc::size_of_parameters_offset()));
|
|
|
1499 const Address max_stack (G5_method, 0, in_bytes(methodOopDesc::max_stack_offset()));
|
|
|
1500 const Address size_of_locals (G5_method, 0, in_bytes(methodOopDesc::size_of_locals_offset()));
|
|
|
1501
|
|
|
1502 address entry_point = __ pc();
|
|
|
1503 __ mov(G0, prevState); // no current activation
|
|
|
1504
|
|
|
1505
|
|
|
1506 Label re_dispatch;
|
|
|
1507
|
|
|
1508 __ bind(re_dispatch);
|
|
|
1509
|
|
|
1510 // Interpreter needs to have locals completely contiguous. In order to do that
|
|
|
1511 // We must adjust the caller's stack pointer for any locals beyond just the
|
|
|
1512 // parameters
|
|
|
1513 adjust_callers_stack(Gargs);
|
|
|
1514
|
|
|
1515 // O5_savedSP still contains sender's sp
|
|
|
1516
|
|
|
1517 // NEW FRAME
|
|
|
1518
|
|
|
1519 generate_compute_interpreter_state(Lstate, prevState, false);
|
|
|
1520
|
|
|
1521 // At this point a new interpreter frame and state object are created and initialized
|
|
|
1522 // Lstate has the pointer to the new activation
|
|
|
1523 // Any stack banging or limit check should already be done.
|
|
|
1524
|
|
|
1525 Label call_interpreter;
|
|
|
1526
|
|
|
1527 __ bind(call_interpreter);
|
|
|
1528
|
|
|
1529
|
|
|
1530 #if 1
|
|
|
1531 __ set(0xdead002, Lmirror);
|
|
|
1532 __ set(0xdead002, L2_scratch);
|
|
|
1533 __ set(0xdead003, L3_scratch);
|
|
|
1534 __ set(0xdead004, L4_scratch);
|
|
|
1535 __ set(0xdead005, Lscratch);
|
|
|
1536 __ set(0xdead006, Lscratch2);
|
|
|
1537 __ set(0xdead007, L7_scratch);
|
|
|
1538
|
|
|
1539 __ set(0xdeaf002, O2);
|
|
|
1540 __ set(0xdeaf003, O3);
|
|
|
1541 __ set(0xdeaf004, O4);
|
|
|
1542 __ set(0xdeaf005, O5);
|
|
|
1543 #endif
|
|
|
1544
|
|
|
1545 // Call interpreter (stack bang complete) enter here if message is
|
|
|
1546 // set and we know stack size is valid
|
|
|
1547
|
|
|
1548 Label call_interpreter_2;
|
|
|
1549
|
|
|
1550 __ bind(call_interpreter_2);
|
|
|
1551
|
|
|
1552 #ifdef ASSERT
|
|
|
1553 {
|
|
|
1554 Label skip;
|
|
|
1555 __ ld_ptr(STATE(_frame_bottom), G3_scratch);
|
|
|
1556 __ cmp(G3_scratch, SP);
|
|
|
1557 __ brx(Assembler::equal, false, Assembler::pt, skip);
|
|
|
1558 __ delayed()->nop();
|
|
|
1559 __ stop("SP not restored to frame bottom");
|
|
|
1560 __ bind(skip);
|
|
|
1561 }
|
|
|
1562 #endif
|
|
|
1563
|
|
|
1564 VALIDATE_STATE(G3_scratch, 4);
|
|
|
1565 __ set_last_Java_frame(SP, noreg);
|
|
|
1566 __ mov(Lstate, O0); // (arg) pointer to current state
|
|
|
1567
|
|
|
1568 __ call(CAST_FROM_FN_PTR(address,
|
|
|
1569 JvmtiExport::can_post_interpreter_events() ?
|
|
|
1570 BytecodeInterpreter::runWithChecks
|
|
|
1571 : BytecodeInterpreter::run),
|
|
|
1572 relocInfo::runtime_call_type);
|
|
|
1573
|
|
|
1574 __ delayed()->nop();
|
|
|
1575
|
|
|
1576 __ ld_ptr(STATE(_thread), G2_thread);
|
|
|
1577 __ reset_last_Java_frame();
|
|
|
1578
|
|
|
1579 // examine msg from interpreter to determine next action
|
|
|
1580 __ ld_ptr(STATE(_thread), G2_thread); // restore G2_thread
|
|
|
1581
|
|
|
1582 __ ld(STATE(_msg), L1_scratch); // Get new message
|
|
|
1583
|
|
|
1584 Label call_method;
|
|
|
1585 Label return_from_interpreted_method;
|
|
|
1586 Label throw_exception;
|
|
|
1587 Label do_OSR;
|
|
|
1588 Label bad_msg;
|
|
|
1589 Label resume_interpreter;
|
|
|
1590
|
|
|
1591 __ cmp(L1_scratch, (int)BytecodeInterpreter::call_method);
|
|
|
1592 __ br(Assembler::equal, false, Assembler::pt, call_method);
|
|
|
1593 __ delayed()->cmp(L1_scratch, (int)BytecodeInterpreter::return_from_method);
|
|
|
1594 __ br(Assembler::equal, false, Assembler::pt, return_from_interpreted_method);
|
|
|
1595 __ delayed()->cmp(L1_scratch, (int)BytecodeInterpreter::throwing_exception);
|
|
|
1596 __ br(Assembler::equal, false, Assembler::pt, throw_exception);
|
|
|
1597 __ delayed()->cmp(L1_scratch, (int)BytecodeInterpreter::do_osr);
|
|
|
1598 __ br(Assembler::equal, false, Assembler::pt, do_OSR);
|
|
|
1599 __ delayed()->cmp(L1_scratch, (int)BytecodeInterpreter::more_monitors);
|
|
|
1600 __ br(Assembler::notEqual, false, Assembler::pt, bad_msg);
|
|
|
1601
|
|
|
1602 // Allocate more monitor space, shuffle expression stack....
|
|
|
1603
|
|
|
1604 generate_more_monitors();
|
|
|
1605
|
|
|
1606 // new monitor slot allocated, resume the interpreter.
|
|
|
1607
|
|
|
1608 __ set((int)BytecodeInterpreter::got_monitors, L1_scratch);
|
|
|
1609 VALIDATE_STATE(G3_scratch, 5);
|
|
|
1610 __ ba(false, call_interpreter);
|
|
|
1611 __ delayed()->st(L1_scratch, STATE(_msg));
|
|
|
1612
|
|
|
1613 // uncommon trap needs to jump to here to enter the interpreter (re-execute current bytecode)
|
|
|
1614 unctrap_frame_manager_entry = __ pc();
|
|
|
1615
|
|
|
1616 // QQQ what message do we send
|
|
|
1617
|
|
|
1618 __ ba(false, call_interpreter);
|
|
|
1619 __ delayed()->ld_ptr(STATE(_frame_bottom), SP); // restore to full stack frame
|
|
|
1620
|
|
|
1621 //=============================================================================
|
|
|
1622 // Returning from a compiled method into a deopted method. The bytecode at the
|
|
|
1623 // bcp has completed. The result of the bytecode is in the native abi (the tosca
|
|
|
1624 // for the template based interpreter). Any stack space that was used by the
|
|
|
1625 // bytecode that has completed has been removed (e.g. parameters for an invoke)
|
|
|
1626 // so all that we have to do is place any pending result on the expression stack
|
|
|
1627 // and resume execution on the next bytecode.
|
|
|
1628
|
|
|
1629 generate_deopt_handling();
|
|
|
1630
|
|
|
1631 // ready to resume the interpreter
|
|
|
1632
|
|
|
1633 __ set((int)BytecodeInterpreter::deopt_resume, L1_scratch);
|
|
|
1634 __ ba(false, call_interpreter);
|
|
|
1635 __ delayed()->st(L1_scratch, STATE(_msg));
|
|
|
1636
|
|
|
1637 // Current frame has caught an exception we need to dispatch to the
|
|
|
1638 // handler. We can get here because a native interpreter frame caught
|
|
|
1639 // an exception in which case there is no handler and we must rethrow
|
|
|
1640 // If it is a vanilla interpreted frame the we simply drop into the
|
|
|
1641 // interpreter and let it do the lookup.
|
|
|
1642
|
|
|
1643 Interpreter::_rethrow_exception_entry = __ pc();
|
|
|
1644
|
|
|
1645 Label return_with_exception;
|
|
|
1646 Label unwind_and_forward;
|
|
|
1647
|
|
|
1648 // O0: exception
|
|
|
1649 // O7: throwing pc
|
|
|
1650
|
|
|
1651 // We want exception in the thread no matter what we ultimately decide about frame type.
|
|
|
1652
|
|
|
1653 Address exception_addr (G2_thread, 0, in_bytes(Thread::pending_exception_offset()));
|
|
|
1654 __ verify_thread();
|
|
|
1655 __ st_ptr(O0, exception_addr);
|
|
|
1656
|
|
|
1657 // get the methodOop
|
|
|
1658 __ ld_ptr(STATE(_method), G5_method);
|
|
|
1659
|
|
|
1660 // if this current frame vanilla or native?
|
|
|
1661
|
|
|
1662 __ ld(access_flags, Gtmp1);
|
|
|
1663 __ btst(JVM_ACC_NATIVE, Gtmp1);
|
|
|
1664 __ br(Assembler::zero, false, Assembler::pt, return_with_exception); // vanilla interpreted frame handle directly
|
|
|
1665 __ delayed()->nop();
|
|
|
1666
|
|
|
1667 // We drop thru to unwind a native interpreted frame with a pending exception
|
|
|
1668 // We jump here for the initial interpreter frame with exception pending
|
|
|
1669 // We unwind the current acivation and forward it to our caller.
|
|
|
1670
|
|
|
1671 __ bind(unwind_and_forward);
|
|
|
1672
|
|
|
1673 // Unwind frame and jump to forward exception. unwinding will place throwing pc in O7
|
|
|
1674 // as expected by forward_exception.
|
|
|
1675
|
|
|
1676 __ restore(FP, G0, SP); // unwind interpreter state frame
|
|
|
1677 __ br(Assembler::always, false, Assembler::pt, StubRoutines::forward_exception_entry(), relocInfo::runtime_call_type);
|
|
|
1678 __ delayed()->mov(I5_savedSP->after_restore(), SP);
|
|
|
1679
|
|
|
1680 // Return point from a call which returns a result in the native abi
|
|
|
1681 // (c1/c2/jni-native). This result must be processed onto the java
|
|
|
1682 // expression stack.
|
|
|
1683 //
|
|
|
1684 // A pending exception may be present in which case there is no result present
|
|
|
1685
|
|
|
1686 address return_from_native_method = __ pc();
|
|
|
1687
|
|
|
1688 VALIDATE_STATE(G3_scratch, 6);
|
|
|
1689
|
|
|
1690 // Result if any is in native abi result (O0..O1/F0..F1). The java expression
|
|
|
1691 // stack is in the state that the calling convention left it.
|
|
|
1692 // Copy the result from native abi result and place it on java expression stack.
|
|
|
1693
|
|
|
1694 // Current interpreter state is present in Lstate
|
|
|
1695
|
|
|
1696 // Exception pending?
|
|
|
1697
|
|
|
1698 __ ld_ptr(STATE(_frame_bottom), SP); // restore to full stack frame
|
|
|
1699 __ ld_ptr(exception_addr, Lscratch); // get any pending exception
|
|
|
1700 __ tst(Lscratch); // exception pending?
|
|
|
1701 __ brx(Assembler::notZero, false, Assembler::pt, return_with_exception);
|
|
|
1702 __ delayed()->nop();
|
|
|
1703
|
|
|
1704 // Process the native abi result to java expression stack
|
|
|
1705
|
|
|
1706 __ ld_ptr(STATE(_result._to_call._callee), L4_scratch); // called method
|
|
|
1707 __ ld_ptr(STATE(_stack), L1_scratch); // get top of java expr stack
|
|
|
1708 __ lduh(L4_scratch, in_bytes(methodOopDesc::size_of_parameters_offset()), L2_scratch); // get parameter size
|
|
|
1709 __ sll(L2_scratch, LogBytesPerWord, L2_scratch ); // parameter size in bytes
|
|
|
1710 __ add(L1_scratch, L2_scratch, L1_scratch); // stack destination for result
|
|
123
|
1711 __ ld(L4_scratch, in_bytes(methodOopDesc::result_index_offset()), L3_scratch); // called method result type index
|
|
0
|
1712
|
|
|
1713 // tosca is really just native abi
|
|
|
1714 __ set((intptr_t)CppInterpreter::_tosca_to_stack, L4_scratch);
|
|
|
1715 __ sll(L3_scratch, LogBytesPerWord, L3_scratch);
|
|
|
1716 __ ld_ptr(L4_scratch, L3_scratch, Lscratch); // get typed result converter address
|
|
|
1717 __ jmpl(Lscratch, G0, O7); // and convert it
|
|
|
1718 __ delayed()->nop();
|
|
|
1719
|
|
|
1720 // L1_scratch points to top of stack (prepushed)
|
|
|
1721
|
|
|
1722 __ ba(false, resume_interpreter);
|
|
|
1723 __ delayed()->mov(L1_scratch, O1);
|
|
|
1724
|
|
|
1725 // An exception is being caught on return to a vanilla interpreter frame.
|
|
|
1726 // Empty the stack and resume interpreter
|
|
|
1727
|
|
|
1728 __ bind(return_with_exception);
|
|
|
1729
|
|
|
1730 __ ld_ptr(STATE(_frame_bottom), SP); // restore to full stack frame
|
|
|
1731 __ ld_ptr(STATE(_stack_base), O1); // empty java expression stack
|
|
|
1732 __ ba(false, resume_interpreter);
|
|
|
1733 __ delayed()->sub(O1, wordSize, O1); // account for prepush
|
|
|
1734
|
|
|
1735 // Return from interpreted method we return result appropriate to the caller (i.e. "recursive"
|
|
|
1736 // interpreter call, or native) and unwind this interpreter activation.
|
|
|
1737 // All monitors should be unlocked.
|
|
|
1738
|
|
|
1739 __ bind(return_from_interpreted_method);
|
|
|
1740
|
|
|
1741 VALIDATE_STATE(G3_scratch, 7);
|
|
|
1742
|
|
|
1743 Label return_to_initial_caller;
|
|
|
1744
|
|
|
1745 // Interpreted result is on the top of the completed activation expression stack.
|
|
|
1746 // We must return it to the top of the callers stack if caller was interpreted
|
|
|
1747 // otherwise we convert to native abi result and return to call_stub/c1/c2
|
|
|
1748 // The caller's expression stack was truncated by the call however the current activation
|
|
|
1749 // has enough stuff on the stack that we have usable space there no matter what. The
|
|
|
1750 // other thing that makes it easy is that the top of the caller's stack is stored in STATE(_locals)
|
|
|
1751 // for the current activation
|
|
|
1752
|
|
|
1753 __ ld_ptr(STATE(_prev_link), L1_scratch);
|
|
|
1754 __ ld_ptr(STATE(_method), L2_scratch); // get method just executed
|
|
123
|
1755 __ ld(L2_scratch, in_bytes(methodOopDesc::result_index_offset()), L2_scratch);
|
|
0
|
1756 __ tst(L1_scratch);
|
|
|
1757 __ brx(Assembler::zero, false, Assembler::pt, return_to_initial_caller);
|
|
|
1758 __ delayed()->sll(L2_scratch, LogBytesPerWord, L2_scratch);
|
|
|
1759
|
|
|
1760 // Copy result to callers java stack
|
|
|
1761
|
|
|
1762 __ set((intptr_t)CppInterpreter::_stack_to_stack, L4_scratch);
|
|
|
1763 __ ld_ptr(L4_scratch, L2_scratch, Lscratch); // get typed result converter address
|
|
|
1764 __ ld_ptr(STATE(_stack), O0); // current top (prepushed)
|
|
|
1765 __ ld_ptr(STATE(_locals), O1); // stack destination
|
|
|
1766
|
|
|
1767 // O0 - will be source, O1 - will be destination (preserved)
|
|
|
1768 __ jmpl(Lscratch, G0, O7); // and convert it
|
|
|
1769 __ delayed()->add(O0, wordSize, O0); // get source (top of current expr stack)
|
|
|
1770
|
|
|
1771 // O1 == &locals[0]
|
|
|
1772
|
|
|
1773 // Result is now on caller's stack. Just unwind current activation and resume
|
|
|
1774
|
|
|
1775 Label unwind_recursive_activation;
|
|
|
1776
|
|
|
1777
|
|
|
1778 __ bind(unwind_recursive_activation);
|
|
|
1779
|
|
|
1780 // O1 == &locals[0] (really callers stacktop) for activation now returning
|
|
|
1781 // returning to interpreter method from "recursive" interpreter call
|
|
|
1782 // result converter left O1 pointing to top of the( prepushed) java stack for method we are returning
|
|
|
1783 // to. Now all we must do is unwind the state from the completed call
|
|
|
1784
|
|
|
1785 // Must restore stack
|
|
|
1786 VALIDATE_STATE(G3_scratch, 8);
|
|
|
1787
|
|
|
1788 // Return to interpreter method after a method call (interpreted/native/c1/c2) has completed.
|
|
|
1789 // Result if any is already on the caller's stack. All we must do now is remove the now dead
|
|
|
1790 // frame and tell interpreter to resume.
|
|
|
1791
|
|
|
1792
|
|
|
1793 __ mov(O1, I1); // pass back new stack top across activation
|
|
|
1794 // POP FRAME HERE ==================================
|
|
|
1795 __ restore(FP, G0, SP); // unwind interpreter state frame
|
|
|
1796 __ ld_ptr(STATE(_frame_bottom), SP); // restore to full stack frame
|
|
|
1797
|
|
|
1798
|
|
|
1799 // Resume the interpreter. The current frame contains the current interpreter
|
|
|
1800 // state object.
|
|
|
1801 //
|
|
|
1802 // O1 == new java stack pointer
|
|
|
1803
|
|
|
1804 __ bind(resume_interpreter);
|
|
|
1805 VALIDATE_STATE(G3_scratch, 10);
|
|
|
1806
|
|
|
1807 // A frame we have already used before so no need to bang stack so use call_interpreter_2 entry
|
|
|
1808
|
|
|
1809 __ set((int)BytecodeInterpreter::method_resume, L1_scratch);
|
|
|
1810 __ st(L1_scratch, STATE(_msg));
|
|
|
1811 __ ba(false, call_interpreter_2);
|
|
|
1812 __ delayed()->st_ptr(O1, STATE(_stack));
|
|
|
1813
|
|
|
1814
|
|
|
1815 // Fast accessor methods share this entry point.
|
|
|
1816 // This works because frame manager is in the same codelet
|
|
|
1817 // This can either be an entry via call_stub/c1/c2 or a recursive interpreter call
|
|
|
1818 // we need to do a little register fixup here once we distinguish the two of them
|
|
|
1819 if (UseFastAccessorMethods && !synchronized) {
|
|
|
1820 // Call stub_return address still in O7
|
|
|
1821 __ bind(fast_accessor_slow_entry_path);
|
|
|
1822 __ set((intptr_t)return_from_native_method - 8, Gtmp1);
|
|
|
1823 __ cmp(Gtmp1, O7); // returning to interpreter?
|
|
|
1824 __ brx(Assembler::equal, true, Assembler::pt, re_dispatch); // yep
|
|
|
1825 __ delayed()->nop();
|
|
|
1826 __ ba(false, re_dispatch);
|
|
|
1827 __ delayed()->mov(G0, prevState); // initial entry
|
|
|
1828
|
|
|
1829 }
|
|
|
1830
|
|
|
1831 // interpreter returning to native code (call_stub/c1/c2)
|
|
|
1832 // convert result and unwind initial activation
|
|
|
1833 // L2_scratch - scaled result type index
|
|
|
1834
|
|
|
1835 __ bind(return_to_initial_caller);
|
|
|
1836
|
|
|
1837 __ set((intptr_t)CppInterpreter::_stack_to_native_abi, L4_scratch);
|
|
|
1838 __ ld_ptr(L4_scratch, L2_scratch, Lscratch); // get typed result converter address
|
|
|
1839 __ ld_ptr(STATE(_stack), O0); // current top (prepushed)
|
|
|
1840 __ jmpl(Lscratch, G0, O7); // and convert it
|
|
|
1841 __ delayed()->add(O0, wordSize, O0); // get source (top of current expr stack)
|
|
|
1842
|
|
|
1843 Label unwind_initial_activation;
|
|
|
1844 __ bind(unwind_initial_activation);
|
|
|
1845
|
|
|
1846 // RETURN TO CALL_STUB/C1/C2 code (result if any in I0..I1/(F0/..F1)
|
|
|
1847 // we can return here with an exception that wasn't handled by interpreted code
|
|
|
1848 // how does c1/c2 see it on return?
|
|
|
1849
|
|
|
1850 // compute resulting sp before/after args popped depending upon calling convention
|
|
|
1851 // __ ld_ptr(STATE(_saved_sp), Gtmp1);
|
|
|
1852 //
|
|
|
1853 // POP FRAME HERE ==================================
|
|
|
1854 __ restore(FP, G0, SP);
|
|
|
1855 __ retl();
|
|
|
1856 __ delayed()->mov(I5_savedSP->after_restore(), SP);
|
|
|
1857
|
|
|
1858 // OSR request, unwind the current frame and transfer to the OSR entry
|
|
|
1859 // and enter OSR nmethod
|
|
|
1860
|
|
|
1861 __ bind(do_OSR);
|
|
|
1862 Label remove_initial_frame;
|
|
|
1863 __ ld_ptr(STATE(_prev_link), L1_scratch);
|
|
|
1864 __ ld_ptr(STATE(_result._osr._osr_buf), G1_scratch);
|
|
|
1865
|
|
|
1866 // We are going to pop this frame. Is there another interpreter frame underneath
|
|
|
1867 // it or is it callstub/compiled?
|
|
|
1868
|
|
|
1869 __ tst(L1_scratch);
|
|
|
1870 __ brx(Assembler::zero, false, Assembler::pt, remove_initial_frame);
|
|
|
1871 __ delayed()->ld_ptr(STATE(_result._osr._osr_entry), G3_scratch);
|
|
|
1872
|
|
|
1873 // Frame underneath is an interpreter frame simply unwind
|
|
|
1874 // POP FRAME HERE ==================================
|
|
|
1875 __ restore(FP, G0, SP); // unwind interpreter state frame
|
|
|
1876 __ mov(I5_savedSP->after_restore(), SP);
|
|
|
1877
|
|
|
1878 // Since we are now calling native need to change our "return address" from the
|
|
|
1879 // dummy RecursiveInterpreterActivation to a return from native
|
|
|
1880
|
|
|
1881 __ set((intptr_t)return_from_native_method - 8, O7);
|
|
|
1882
|
|
|
1883 __ jmpl(G3_scratch, G0, G0);
|
|
|
1884 __ delayed()->mov(G1_scratch, O0);
|
|
|
1885
|
|
|
1886 __ bind(remove_initial_frame);
|
|
|
1887
|
|
|
1888 // POP FRAME HERE ==================================
|
|
|
1889 __ restore(FP, G0, SP);
|
|
|
1890 __ mov(I5_savedSP->after_restore(), SP);
|
|
|
1891 __ jmpl(G3_scratch, G0, G0);
|
|
|
1892 __ delayed()->mov(G1_scratch, O0);
|
|
|
1893
|
|
|
1894 // Call a new method. All we do is (temporarily) trim the expression stack
|
|
|
1895 // push a return address to bring us back to here and leap to the new entry.
|
|
|
1896 // At this point we have a topmost frame that was allocated by the frame manager
|
|
|
1897 // which contains the current method interpreted state. We trim this frame
|
|
|
1898 // of excess java expression stack entries and then recurse.
|
|
|
1899
|
|
|
1900 __ bind(call_method);
|
|
|
1901
|
|
|
1902 // stack points to next free location and not top element on expression stack
|
|
|
1903 // method expects sp to be pointing to topmost element
|
|
|
1904
|
|
|
1905 __ ld_ptr(STATE(_thread), G2_thread);
|
|
|
1906 __ ld_ptr(STATE(_result._to_call._callee), G5_method);
|
|
|
1907
|
|
|
1908
|
|
|
1909 // SP already takes in to account the 2 extra words we use for slop
|
|
|
1910 // when we call a "static long no_params()" method. So if
|
|
|
1911 // we trim back sp by the amount of unused java expression stack
|
|
|
1912 // there will be automagically the 2 extra words we need.
|
|
|
1913 // We also have to worry about keeping SP aligned.
|
|
|
1914
|
|
|
1915 __ ld_ptr(STATE(_stack), Gargs);
|
|
|
1916 __ ld_ptr(STATE(_stack_limit), L1_scratch);
|
|
|
1917
|
|
|
1918 // compute the unused java stack size
|
|
|
1919 __ sub(Gargs, L1_scratch, L2_scratch); // compute unused space
|
|
|
1920
|
|
123
|
1921 // Round down the unused space to that stack is always 16-byte aligned
|
|
|
1922 // by making the unused space a multiple of the size of two longs.
|
|
0
|
1923
|
|
123
|
1924 __ and3(L2_scratch, -2*BytesPerLong, L2_scratch);
|
|
0
|
1925
|
|
|
1926 // Now trim the stack
|
|
|
1927 __ add(SP, L2_scratch, SP);
|
|
|
1928
|
|
|
1929
|
|
|
1930 // Now point to the final argument (account for prepush)
|
|
|
1931 __ add(Gargs, wordSize, Gargs);
|
|
|
1932 #ifdef ASSERT
|
|
|
1933 // Make sure we have space for the window
|
|
|
1934 __ sub(Gargs, SP, L1_scratch);
|
|
|
1935 __ cmp(L1_scratch, 16*wordSize);
|
|
|
1936 {
|
|
|
1937 Label skip;
|
|
|
1938 __ brx(Assembler::greaterEqual, false, Assembler::pt, skip);
|
|
|
1939 __ delayed()->nop();
|
|
|
1940 __ stop("killed stack");
|
|
|
1941 __ bind(skip);
|
|
|
1942 }
|
|
|
1943 #endif // ASSERT
|
|
|
1944
|
|
|
1945 // Create a new frame where we can store values that make it look like the interpreter
|
|
|
1946 // really recursed.
|
|
|
1947
|
|
|
1948 // prepare to recurse or call specialized entry
|
|
|
1949
|
|
|
1950 // First link the registers we need
|
|
|
1951
|
|
|
1952 // make the pc look good in debugger
|
|
|
1953 __ set(CAST_FROM_FN_PTR(intptr_t, RecursiveInterpreterActivation), O7);
|
|
|
1954 // argument too
|
|
|
1955 __ mov(Lstate, I0);
|
|
|
1956
|
|
|
1957 // Record our sending SP
|
|
|
1958 __ mov(SP, O5_savedSP);
|
|
|
1959
|
|
|
1960 __ ld_ptr(STATE(_result._to_call._callee_entry_point), L2_scratch);
|
|
|
1961 __ set((intptr_t) entry_point, L1_scratch);
|
|
|
1962 __ cmp(L1_scratch, L2_scratch);
|
|
|
1963 __ brx(Assembler::equal, false, Assembler::pt, re_dispatch);
|
|
|
1964 __ delayed()->mov(Lstate, prevState); // link activations
|
|
|
1965
|
|
|
1966 // method uses specialized entry, push a return so we look like call stub setup
|
|
|
1967 // this path will handle fact that result is returned in registers and not
|
|
|
1968 // on the java stack.
|
|
|
1969
|
|
|
1970 __ set((intptr_t)return_from_native_method - 8, O7);
|
|
|
1971 __ jmpl(L2_scratch, G0, G0); // Do specialized entry
|
|
|
1972 __ delayed()->nop();
|
|
|
1973
|
|
|
1974 //
|
|
|
1975 // Bad Message from interpreter
|
|
|
1976 //
|
|
|
1977 __ bind(bad_msg);
|
|
|
1978 __ stop("Bad message from interpreter");
|
|
|
1979
|
|
|
1980 // Interpreted method "returned" with an exception pass it on...
|
|
|
1981 // Pass result, unwind activation and continue/return to interpreter/call_stub
|
|
|
1982 // We handle result (if any) differently based on return to interpreter or call_stub
|
|
|
1983
|
|
|
1984 __ bind(throw_exception);
|
|
|
1985 __ ld_ptr(STATE(_prev_link), L1_scratch);
|
|
|
1986 __ tst(L1_scratch);
|
|
|
1987 __ brx(Assembler::zero, false, Assembler::pt, unwind_and_forward);
|
|
|
1988 __ delayed()->nop();
|
|
|
1989
|
|
|
1990 __ ld_ptr(STATE(_locals), O1); // get result of popping callee's args
|
|
|
1991 __ ba(false, unwind_recursive_activation);
|
|
|
1992 __ delayed()->nop();
|
|
|
1993
|
|
|
1994 interpreter_frame_manager = entry_point;
|
|
|
1995 return entry_point;
|
|
|
1996 }
|
|
|
1997
|
|
|
1998 InterpreterGenerator::InterpreterGenerator(StubQueue* code)
|
|
|
1999 : CppInterpreterGenerator(code) {
|
|
|
2000 generate_all(); // down here so it can be "virtual"
|
|
|
2001 }
|
|
|
2002
|
|
|
2003
|
|
|
2004 static int size_activation_helper(int callee_extra_locals, int max_stack, int monitor_size) {
|
|
|
2005
|
|
|
2006 // Figure out the size of an interpreter frame (in words) given that we have a fully allocated
|
|
|
2007 // expression stack, the callee will have callee_extra_locals (so we can account for
|
|
|
2008 // frame extension) and monitor_size for monitors. Basically we need to calculate
|
|
|
2009 // this exactly like generate_fixed_frame/generate_compute_interpreter_state.
|
|
|
2010 //
|
|
|
2011 //
|
|
|
2012 // The big complicating thing here is that we must ensure that the stack stays properly
|
|
|
2013 // aligned. This would be even uglier if monitor size wasn't modulo what the stack
|
|
|
2014 // needs to be aligned for). We are given that the sp (fp) is already aligned by
|
|
|
2015 // the caller so we must ensure that it is properly aligned for our callee.
|
|
|
2016 //
|
|
|
2017 // Ths c++ interpreter always makes sure that we have a enough extra space on the
|
|
|
2018 // stack at all times to deal with the "stack long no_params()" method issue. This
|
|
|
2019 // is "slop_factor" here.
|
|
|
2020 const int slop_factor = 2;
|
|
|
2021
|
|
|
2022 const int fixed_size = sizeof(BytecodeInterpreter)/wordSize + // interpreter state object
|
|
|
2023 frame::memory_parameter_word_sp_offset; // register save area + param window
|
|
710
|
2024 const int extra_stack = 0; //6815692//methodOopDesc::extra_stack_entries();
|
|
0
|
2025 return (round_to(max_stack +
|
|
710
|
2026 extra_stack +
|
|
0
|
2027 slop_factor +
|
|
|
2028 fixed_size +
|
|
|
2029 monitor_size +
|
|
|
2030 (callee_extra_locals * Interpreter::stackElementWords()), WordsPerLong));
|
|
|
2031
|
|
|
2032 }
|
|
|
2033
|
|
|
2034 int AbstractInterpreter::size_top_interpreter_activation(methodOop method) {
|
|
|
2035
|
|
|
2036 // See call_stub code
|
|
|
2037 int call_stub_size = round_to(7 + frame::memory_parameter_word_sp_offset,
|
|
|
2038 WordsPerLong); // 7 + register save area
|
|
|
2039
|
|
|
2040 // Save space for one monitor to get into the interpreted method in case
|
|
|
2041 // the method is synchronized
|
|
|
2042 int monitor_size = method->is_synchronized() ?
|
|
|
2043 1*frame::interpreter_frame_monitor_size() : 0;
|
|
|
2044 return size_activation_helper(method->max_locals(), method->max_stack(),
|
|
|
2045 monitor_size) + call_stub_size;
|
|
|
2046 }
|
|
|
2047
|
|
|
2048 void BytecodeInterpreter::layout_interpreterState(interpreterState to_fill,
|
|
|
2049 frame* caller,
|
|
|
2050 frame* current,
|
|
|
2051 methodOop method,
|
|
|
2052 intptr_t* locals,
|
|
|
2053 intptr_t* stack,
|
|
|
2054 intptr_t* stack_base,
|
|
|
2055 intptr_t* monitor_base,
|
|
|
2056 intptr_t* frame_bottom,
|
|
|
2057 bool is_top_frame
|
|
|
2058 )
|
|
|
2059 {
|
|
|
2060 // What about any vtable?
|
|
|
2061 //
|
|
|
2062 to_fill->_thread = JavaThread::current();
|
|
|
2063 // This gets filled in later but make it something recognizable for now
|
|
|
2064 to_fill->_bcp = method->code_base();
|
|
|
2065 to_fill->_locals = locals;
|
|
|
2066 to_fill->_constants = method->constants()->cache();
|
|
|
2067 to_fill->_method = method;
|
|
|
2068 to_fill->_mdx = NULL;
|
|
|
2069 to_fill->_stack = stack;
|
|
|
2070 if (is_top_frame && JavaThread::current()->popframe_forcing_deopt_reexecution() ) {
|
|
|
2071 to_fill->_msg = deopt_resume2;
|
|
|
2072 } else {
|
|
|
2073 to_fill->_msg = method_resume;
|
|
|
2074 }
|
|
|
2075 to_fill->_result._to_call._bcp_advance = 0;
|
|
|
2076 to_fill->_result._to_call._callee_entry_point = NULL; // doesn't matter to anyone
|
|
|
2077 to_fill->_result._to_call._callee = NULL; // doesn't matter to anyone
|
|
|
2078 to_fill->_prev_link = NULL;
|
|
|
2079
|
|
|
2080 // Fill in the registers for the frame
|
|
|
2081
|
|
|
2082 // Need to install _sender_sp. Actually not too hard in C++!
|
|
|
2083 // When the skeletal frames are layed out we fill in a value
|
|
|
2084 // for _sender_sp. That value is only correct for the oldest
|
|
|
2085 // skeletal frame constructed (because there is only a single
|
|
|
2086 // entry for "caller_adjustment". While the skeletal frames
|
|
|
2087 // exist that is good enough. We correct that calculation
|
|
|
2088 // here and get all the frames correct.
|
|
|
2089
|
|
|
2090 // to_fill->_sender_sp = locals - (method->size_of_parameters() - 1);
|
|
|
2091
|
|
|
2092 *current->register_addr(Lstate) = (intptr_t) to_fill;
|
|
|
2093 // skeletal already places a useful value here and this doesn't account
|
|
|
2094 // for alignment so don't bother.
|
|
|
2095 // *current->register_addr(I5_savedSP) = (intptr_t) locals - (method->size_of_parameters() - 1);
|
|
|
2096
|
|
|
2097 if (caller->is_interpreted_frame()) {
|
|
|
2098 interpreterState prev = caller->get_interpreterState();
|
|
|
2099 to_fill->_prev_link = prev;
|
|
|
2100 // Make the prev callee look proper
|
|
|
2101 prev->_result._to_call._callee = method;
|
|
|
2102 if (*prev->_bcp == Bytecodes::_invokeinterface) {
|
|
|
2103 prev->_result._to_call._bcp_advance = 5;
|
|
|
2104 } else {
|
|
|
2105 prev->_result._to_call._bcp_advance = 3;
|
|
|
2106 }
|
|
|
2107 }
|
|
|
2108 to_fill->_oop_temp = NULL;
|
|
|
2109 to_fill->_stack_base = stack_base;
|
|
|
2110 // Need +1 here because stack_base points to the word just above the first expr stack entry
|
|
|
2111 // and stack_limit is supposed to point to the word just below the last expr stack entry.
|
|
|
2112 // See generate_compute_interpreter_state.
|
|
710
|
2113 int extra_stack = 0; //6815692//methodOopDesc::extra_stack_entries();
|
|
|
2114 to_fill->_stack_limit = stack_base - (method->max_stack() + 1 + extra_stack);
|
|
0
|
2115 to_fill->_monitor_base = (BasicObjectLock*) monitor_base;
|
|
|
2116
|
|
|
2117 // sparc specific
|
|
|
2118 to_fill->_frame_bottom = frame_bottom;
|
|
|
2119 to_fill->_self_link = to_fill;
|
|
|
2120 #ifdef ASSERT
|
|
|
2121 to_fill->_native_fresult = 123456.789;
|
|
|
2122 to_fill->_native_lresult = CONST64(0xdeadcafedeafcafe);
|
|
|
2123 #endif
|
|
|
2124 }
|
|
|
2125
|
|
|
2126 void BytecodeInterpreter::pd_layout_interpreterState(interpreterState istate, address last_Java_pc, intptr_t* last_Java_fp) {
|
|
|
2127 istate->_last_Java_pc = (intptr_t*) last_Java_pc;
|
|
|
2128 }
|
|
|
2129
|
|
|
2130
|
|
|
2131 int AbstractInterpreter::layout_activation(methodOop method,
|
|
|
2132 int tempcount, // Number of slots on java expression stack in use
|
|
|
2133 int popframe_extra_args,
|
|
|
2134 int moncount, // Number of active monitors
|
|
|
2135 int callee_param_size,
|
|
|
2136 int callee_locals_size,
|
|
|
2137 frame* caller,
|
|
|
2138 frame* interpreter_frame,
|
|
|
2139 bool is_top_frame) {
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2140
|
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|
2141 assert(popframe_extra_args == 0, "NEED TO FIX");
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|
2142 // NOTE this code must exactly mimic what InterpreterGenerator::generate_compute_interpreter_state()
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2143 // does as far as allocating an interpreter frame.
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2144 // If interpreter_frame!=NULL, set up the method, locals, and monitors.
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2145 // The frame interpreter_frame, if not NULL, is guaranteed to be the right size,
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2146 // as determined by a previous call to this method.
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2147 // It is also guaranteed to be walkable even though it is in a skeletal state
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2148 // NOTE: return size is in words not bytes
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2149 // NOTE: tempcount is the current size of the java expression stack. For top most
|
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2150 // frames we will allocate a full sized expression stack and not the curback
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2151 // version that non-top frames have.
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2152
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2153 // Calculate the amount our frame will be adjust by the callee. For top frame
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2154 // this is zero.
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2155
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2156 // NOTE: ia64 seems to do this wrong (or at least backwards) in that it
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2157 // calculates the extra locals based on itself. Not what the callee does
|
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2158 // to it. So it ignores last_frame_adjust value. Seems suspicious as far
|
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2159 // as getting sender_sp correct.
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2160
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2161 int extra_locals_size = callee_locals_size - callee_param_size;
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2162 int monitor_size = (sizeof(BasicObjectLock) * moncount) / wordSize;
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2163 int full_frame_words = size_activation_helper(extra_locals_size, method->max_stack(), monitor_size);
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2164 int short_frame_words = size_activation_helper(extra_locals_size, method->max_stack(), monitor_size);
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2165 int frame_words = is_top_frame ? full_frame_words : short_frame_words;
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2166
|
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2167
|
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|
2168 /*
|
|
|
2169 if we actually have a frame to layout we must now fill in all the pieces. This means both
|
|
|
2170 the interpreterState and the registers.
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|
|
2171 */
|
|
|
2172 if (interpreter_frame != NULL) {
|
|
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2173
|
|
|
2174 // MUCHO HACK
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2175
|
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2176 intptr_t* frame_bottom = interpreter_frame->sp() - (full_frame_words - frame_words);
|
|
123
|
2177 // 'interpreter_frame->sp()' is unbiased while 'frame_bottom' must be a biased value in 64bit mode.
|
|
|
2178 assert(((intptr_t)frame_bottom & 0xf) == 0, "SP biased in layout_activation");
|
|
|
2179 frame_bottom = (intptr_t*)((intptr_t)frame_bottom - STACK_BIAS);
|
|
0
|
2180
|
|
|
2181 /* Now fillin the interpreterState object */
|
|
|
2182
|
|
|
2183 interpreterState cur_state = (interpreterState) ((intptr_t)interpreter_frame->fp() - sizeof(BytecodeInterpreter));
|
|
|
2184
|
|
|
2185
|
|
|
2186 intptr_t* locals;
|
|
|
2187
|
|
|
2188 // Calculate the postion of locals[0]. This is painful because of
|
|
|
2189 // stack alignment (same as ia64). The problem is that we can
|
|
|
2190 // not compute the location of locals from fp(). fp() will account
|
|
|
2191 // for the extra locals but it also accounts for aligning the stack
|
|
|
2192 // and we can't determine if the locals[0] was misaligned but max_locals
|
|
|
2193 // was enough to have the
|
|
|
2194 // calculate postion of locals. fp already accounts for extra locals.
|
|
|
2195 // +2 for the static long no_params() issue.
|
|
|
2196
|
|
|
2197 if (caller->is_interpreted_frame()) {
|
|
|
2198 // locals must agree with the caller because it will be used to set the
|
|
|
2199 // caller's tos when we return.
|
|
|
2200 interpreterState prev = caller->get_interpreterState();
|
|
|
2201 // stack() is prepushed.
|
|
|
2202 locals = prev->stack() + method->size_of_parameters();
|
|
|
2203 } else {
|
|
|
2204 // Lay out locals block in the caller adjacent to the register window save area.
|
|
|
2205 //
|
|
|
2206 // Compiled frames do not allocate a varargs area which is why this if
|
|
|
2207 // statement is needed.
|
|
|
2208 //
|
|
|
2209 intptr_t* fp = interpreter_frame->fp();
|
|
|
2210 int local_words = method->max_locals() * Interpreter::stackElementWords();
|
|
|
2211
|
|
|
2212 if (caller->is_compiled_frame()) {
|
|
|
2213 locals = fp + frame::register_save_words + local_words - 1;
|
|
|
2214 } else {
|
|
|
2215 locals = fp + frame::memory_parameter_word_sp_offset + local_words - 1;
|
|
|
2216 }
|
|
|
2217
|
|
|
2218 }
|
|
|
2219 // END MUCHO HACK
|
|
|
2220
|
|
|
2221 intptr_t* monitor_base = (intptr_t*) cur_state;
|
|
|
2222 intptr_t* stack_base = monitor_base - monitor_size;
|
|
|
2223 /* +1 because stack is always prepushed */
|
|
|
2224 intptr_t* stack = stack_base - (tempcount + 1);
|
|
|
2225
|
|
|
2226
|
|
|
2227 BytecodeInterpreter::layout_interpreterState(cur_state,
|
|
|
2228 caller,
|
|
|
2229 interpreter_frame,
|
|
|
2230 method,
|
|
|
2231 locals,
|
|
|
2232 stack,
|
|
|
2233 stack_base,
|
|
|
2234 monitor_base,
|
|
|
2235 frame_bottom,
|
|
|
2236 is_top_frame);
|
|
|
2237
|
|
|
2238 BytecodeInterpreter::pd_layout_interpreterState(cur_state, interpreter_return_address, interpreter_frame->fp());
|
|
|
2239
|
|
|
2240 }
|
|
|
2241 return frame_words;
|
|
|
2242 }
|
|
|
2243
|
|
|
2244 #endif // CC_INTERP
|
