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1 /*
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2 * Copyright 1998-2010 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/_interpreterRT_sparc.cpp.incl"
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27
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28
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29 #define __ _masm->
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30
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31
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32 // Implementation of SignatureHandlerGenerator
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33
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34 void InterpreterRuntime::SignatureHandlerGenerator::pass_word(int size_of_arg, int offset_in_arg) {
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35 Argument jni_arg(jni_offset() + offset_in_arg, false);
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36 Register Rtmp = O0;
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37 __ ld(Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp);
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38
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39 __ store_argument(Rtmp, jni_arg);
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40 }
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41
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42 void InterpreterRuntime::SignatureHandlerGenerator::pass_long() {
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43 Argument jni_arg(jni_offset(), false);
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44 Register Rtmp = O0;
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45
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46 #ifdef _LP64
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47 __ ldx(Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
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48 __ store_long_argument(Rtmp, jni_arg);
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49 #else
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50 __ ld(Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
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51 __ store_argument(Rtmp, jni_arg);
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52 __ ld(Llocals, Interpreter::local_offset_in_bytes(offset() + 0), Rtmp);
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53 Argument successor(jni_arg.successor());
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54 __ store_argument(Rtmp, successor);
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55 #endif
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56 }
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57
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58
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59 #ifdef _LP64
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60 void InterpreterRuntime::SignatureHandlerGenerator::pass_float() {
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61 Argument jni_arg(jni_offset(), false);
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62 FloatRegister Rtmp = F0;
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63 __ ldf(FloatRegisterImpl::S, Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp);
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64 __ store_float_argument(Rtmp, jni_arg);
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65 }
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66 #endif
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67
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68
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69 void InterpreterRuntime::SignatureHandlerGenerator::pass_double() {
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70 Argument jni_arg(jni_offset(), false);
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71 #ifdef _LP64
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72 FloatRegister Rtmp = F0;
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73 __ ldf(FloatRegisterImpl::D, Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
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74 __ store_double_argument(Rtmp, jni_arg);
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75 #else
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76 Register Rtmp = O0;
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77 __ ld(Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
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78 __ store_argument(Rtmp, jni_arg);
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79 __ ld(Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp);
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80 Argument successor(jni_arg.successor());
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81 __ store_argument(Rtmp, successor);
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82 #endif
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83 }
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84
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85 void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
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86 Argument jni_arg(jni_offset(), false);
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87 Argument java_arg( offset(), true);
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88 Register Rtmp1 = O0;
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89 Register Rtmp2 = jni_arg.is_register() ? jni_arg.as_register() : O0;
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90 Register Rtmp3 = G3_scratch;
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91
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92 // the handle for a receiver will never be null
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93 bool do_NULL_check = offset() != 0 || is_static();
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94
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95 Address h_arg = Address(Llocals, Interpreter::local_offset_in_bytes(offset()));
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96 __ ld_ptr(h_arg, Rtmp1);
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97 if (!do_NULL_check) {
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98 __ add(h_arg.base(), h_arg.disp(), Rtmp2);
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99 } else {
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100 if (Rtmp1 == Rtmp2)
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101 __ tst(Rtmp1);
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102 else __ addcc(G0, Rtmp1, Rtmp2); // optimize mov/test pair
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103 Label L;
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104 __ brx(Assembler::notZero, true, Assembler::pt, L);
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105 __ delayed()->add(h_arg.base(), h_arg.disp(), Rtmp2);
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106 __ bind(L);
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107 }
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108 __ store_ptr_argument(Rtmp2, jni_arg); // this is often a no-op
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109 }
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110
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111
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112 void InterpreterRuntime::SignatureHandlerGenerator::generate(uint64_t fingerprint) {
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113
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114 // generate code to handle arguments
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115 iterate(fingerprint);
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116
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117 // return result handler
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118 AddressLiteral result_handler(Interpreter::result_handler(method()->result_type()));
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119 __ sethi(result_handler, Lscratch);
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120 __ retl();
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121 __ delayed()->add(Lscratch, result_handler.low10(), Lscratch);
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122
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123 __ flush();
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124 }
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125
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126
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127 // Implementation of SignatureHandlerLibrary
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128
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129 void SignatureHandlerLibrary::pd_set_handler(address handler) {}
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130
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131
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132 class SlowSignatureHandler: public NativeSignatureIterator {
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133 private:
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134 address _from;
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135 intptr_t* _to;
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136 intptr_t* _RegArgSignature; // Signature of first Arguments to be passed in Registers
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137 uint _argcount;
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138
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139 enum { // We need to differenciate float from non floats in reg args
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140 non_float = 0,
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141 float_sig = 1,
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142 double_sig = 2,
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143 long_sig = 3
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144 };
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145
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146 virtual void pass_int() {
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147 *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
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148 _from -= Interpreter::stackElementSize;
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149 add_signature( non_float );
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150 }
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151
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152 virtual void pass_object() {
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153 // pass address of from
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154 intptr_t *from_addr = (intptr_t*)(_from + Interpreter::local_offset_in_bytes(0));
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155 *_to++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr;
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156 _from -= Interpreter::stackElementSize;
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157 add_signature( non_float );
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158 }
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159
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160 #ifdef _LP64
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161 virtual void pass_float() {
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162 *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
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163 _from -= Interpreter::stackElementSize;
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164 add_signature( float_sig );
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165 }
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166
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167 virtual void pass_double() {
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168 *_to++ = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
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169 _from -= 2*Interpreter::stackElementSize;
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170 add_signature( double_sig );
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171 }
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172
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173 virtual void pass_long() {
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174 _to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
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175 _to += 1;
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176 _from -= 2*Interpreter::stackElementSize;
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177 add_signature( long_sig );
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178 }
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179 #else
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180 // pass_double() is pass_long() and pass_float() only _LP64
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181 virtual void pass_long() {
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182 _to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
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183 _to[1] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(0));
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184 _to += 2;
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185 _from -= 2*Interpreter::stackElementSize;
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186 add_signature( non_float );
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187 }
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188 #endif // _LP64
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189
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190 virtual void add_signature( intptr_t sig_type ) {
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191 if ( _argcount < (sizeof (intptr_t))*4 ) {
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192 *_RegArgSignature |= (sig_type << (_argcount*2) );
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193 _argcount++;
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194 }
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195 }
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196
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197
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198 public:
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199 SlowSignatureHandler(methodHandle method, address from, intptr_t* to, intptr_t *RegArgSig) : NativeSignatureIterator(method) {
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200 _from = from;
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201 _to = to;
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202 _RegArgSignature = RegArgSig;
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203 *_RegArgSignature = 0;
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204 _argcount = method->is_static() ? 2 : 1;
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205 }
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206 };
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207
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208
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209 IRT_ENTRY(address, InterpreterRuntime::slow_signature_handler(
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210 JavaThread* thread,
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211 methodOopDesc* method,
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212 intptr_t* from,
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213 intptr_t* to ))
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214 methodHandle m(thread, method);
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215 assert(m->is_native(), "sanity check");
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216 // handle arguments
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217 // Warning: We use reg arg slot 00 temporarily to return the RegArgSignature
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218 // back to the code that pops the arguments into the CPU registers
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219 SlowSignatureHandler(m, (address)from, m->is_static() ? to+2 : to+1, to).iterate(UCONST64(-1));
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220 // return result handler
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221 return Interpreter::result_handler(m->result_type());
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222 IRT_END
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