Mercurial > hg > truffle
annotate src/cpu/sparc/vm/methodHandles_sparc.cpp @ 2357:8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
Summary: package and class renaming only; delete unused methods and classes
Reviewed-by: twisti
| author | jrose |
|---|---|
| date | Fri, 11 Mar 2011 22:34:57 -0800 |
| parents | 1b4e6a5d98e0 |
| children | 3ef1a1866a60 |
| rev | line source |
|---|---|
| 710 | 1 /* |
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2 * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved. |
| 710 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 710 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "interpreter/interpreter.hpp" | |
| 27 #include "memory/allocation.inline.hpp" | |
| 28 #include "prims/methodHandles.hpp" | |
| 710 | 29 |
| 30 #define __ _masm-> | |
| 31 | |
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32 #ifdef PRODUCT |
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33 #define BLOCK_COMMENT(str) /* nothing */ |
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34 #else |
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35 #define BLOCK_COMMENT(str) __ block_comment(str) |
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36 #endif |
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37 |
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38 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") |
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39 |
| 710 | 40 address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm, |
| 41 address interpreted_entry) { | |
| 1503 | 42 // Just before the actual machine code entry point, allocate space |
| 43 // for a MethodHandleEntry::Data record, so that we can manage everything | |
| 44 // from one base pointer. | |
| 710 | 45 __ align(wordSize); |
| 46 address target = __ pc() + sizeof(Data); | |
| 47 while (__ pc() < target) { | |
| 48 __ nop(); | |
| 49 __ align(wordSize); | |
| 50 } | |
| 51 | |
| 52 MethodHandleEntry* me = (MethodHandleEntry*) __ pc(); | |
| 53 me->set_end_address(__ pc()); // set a temporary end_address | |
| 54 me->set_from_interpreted_entry(interpreted_entry); | |
| 55 me->set_type_checking_entry(NULL); | |
| 56 | |
| 57 return (address) me; | |
| 58 } | |
| 59 | |
| 60 MethodHandleEntry* MethodHandleEntry::finish_compiled_entry(MacroAssembler* _masm, | |
| 61 address start_addr) { | |
| 62 MethodHandleEntry* me = (MethodHandleEntry*) start_addr; | |
| 63 assert(me->end_address() == start_addr, "valid ME"); | |
| 64 | |
| 65 // Fill in the real end_address: | |
| 66 __ align(wordSize); | |
| 67 me->set_end_address(__ pc()); | |
| 68 | |
| 69 return me; | |
| 70 } | |
| 71 | |
| 72 | |
| 73 // Code generation | |
| 74 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) { | |
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75 // I5_savedSP/O5_savedSP: sender SP (must preserve) |
| 1503 | 76 // G4 (Gargs): incoming argument list (must preserve) |
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77 // G5_method: invoke methodOop |
| 1503 | 78 // G3_method_handle: receiver method handle (must load from sp[MethodTypeForm.vmslots]) |
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79 // O0, O1, O2, O3, O4: garbage temps, blown away |
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80 Register O0_mtype = O0; |
| 1503 | 81 Register O1_scratch = O1; |
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82 Register O2_scratch = O2; |
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83 Register O3_scratch = O3; |
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84 Register O4_argslot = O4; |
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85 Register O4_argbase = O4; |
| 1503 | 86 |
| 87 // emit WrongMethodType path first, to enable back-branch from main path | |
| 88 Label wrong_method_type; | |
| 89 __ bind(wrong_method_type); | |
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90 Label invoke_generic_slow_path; |
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91 assert(methodOopDesc::intrinsic_id_size_in_bytes() == sizeof(u1), "");; |
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92 __ ldub(Address(G5_method, methodOopDesc::intrinsic_id_offset_in_bytes()), O1_scratch); |
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93 __ cmp(O1_scratch, (int) vmIntrinsics::_invokeExact); |
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94 __ brx(Assembler::notEqual, false, Assembler::pt, invoke_generic_slow_path); |
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95 __ delayed()->nop(); |
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96 __ mov(O0_mtype, G5_method_type); // required by throw_WrongMethodType |
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97 // mov(G3_method_handle, G3_method_handle); // already in this register |
| 1503 | 98 __ jump_to(AddressLiteral(Interpreter::throw_WrongMethodType_entry()), O1_scratch); |
| 99 __ delayed()->nop(); | |
| 100 | |
| 101 // here's where control starts out: | |
| 102 __ align(CodeEntryAlignment); | |
| 103 address entry_point = __ pc(); | |
| 104 | |
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105 // fetch the MethodType from the method handle |
| 1503 | 106 { |
| 107 Register tem = G5_method; | |
| 108 for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) { | |
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109 __ ld_ptr(Address(tem, *pchase), O0_mtype); |
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110 tem = O0_mtype; // in case there is another indirection |
| 1503 | 111 } |
| 112 } | |
| 113 | |
| 114 // given the MethodType, find out where the MH argument is buried | |
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115 __ load_heap_oop(Address(O0_mtype, __ delayed_value(java_lang_invoke_MethodType::form_offset_in_bytes, O1_scratch)), O4_argslot); |
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116 __ ldsw( Address(O4_argslot, __ delayed_value(java_lang_invoke_MethodTypeForm::vmslots_offset_in_bytes, O1_scratch)), O4_argslot); |
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117 __ add(Gargs, __ argument_offset(O4_argslot, 1), O4_argbase); |
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118 // Note: argument_address uses its input as a scratch register! |
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119 __ ld_ptr(Address(O4_argbase, -Interpreter::stackElementSize), G3_method_handle); |
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120 |
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121 trace_method_handle(_masm, "invokeExact"); |
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122 |
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123 __ check_method_handle_type(O0_mtype, G3_method_handle, O1_scratch, wrong_method_type); |
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124 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
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125 |
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126 // for invokeGeneric (only), apply argument and result conversions on the fly |
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127 __ bind(invoke_generic_slow_path); |
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128 #ifdef ASSERT |
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129 { Label L; |
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130 __ ldub(Address(G5_method, methodOopDesc::intrinsic_id_offset_in_bytes()), O1_scratch); |
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131 __ cmp(O1_scratch, (int) vmIntrinsics::_invokeGeneric); |
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132 __ brx(Assembler::equal, false, Assembler::pt, L); |
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133 __ delayed()->nop(); |
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134 __ stop("bad methodOop::intrinsic_id"); |
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135 __ bind(L); |
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136 } |
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137 #endif //ASSERT |
| 1503 | 138 |
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139 // make room on the stack for another pointer: |
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140 insert_arg_slots(_masm, 2 * stack_move_unit(), _INSERT_REF_MASK, O4_argbase, O1_scratch, O2_scratch, O3_scratch); |
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141 // load up an adapter from the calling type (Java weaves this) |
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142 Register O2_form = O2_scratch; |
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143 Register O3_adapter = O3_scratch; |
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144 __ load_heap_oop(Address(O0_mtype, __ delayed_value(java_lang_invoke_MethodType::form_offset_in_bytes, O1_scratch)), O2_form); |
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145 // load_heap_oop(Address(O2_form, __ delayed_value(java_lang_invoke_MethodTypeForm::genericInvoker_offset_in_bytes, O1_scratch)), O3_adapter); |
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146 // deal with old JDK versions: |
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147 __ add( Address(O2_form, __ delayed_value(java_lang_invoke_MethodTypeForm::genericInvoker_offset_in_bytes, O1_scratch)), O3_adapter); |
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148 __ cmp(O3_adapter, O2_form); |
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149 Label sorry_no_invoke_generic; |
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150 __ brx(Assembler::lessUnsigned, false, Assembler::pn, sorry_no_invoke_generic); |
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151 __ delayed()->nop(); |
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152 |
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153 __ load_heap_oop(Address(O3_adapter, 0), O3_adapter); |
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154 __ tst(O3_adapter); |
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155 __ brx(Assembler::zero, false, Assembler::pn, sorry_no_invoke_generic); |
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156 __ delayed()->nop(); |
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157 __ st_ptr(O3_adapter, Address(O4_argbase, 1 * Interpreter::stackElementSize)); |
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158 // As a trusted first argument, pass the type being called, so the adapter knows |
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159 // the actual types of the arguments and return values. |
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160 // (Generic invokers are shared among form-families of method-type.) |
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161 __ st_ptr(O0_mtype, Address(O4_argbase, 0 * Interpreter::stackElementSize)); |
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162 // FIXME: assert that O3_adapter is of the right method-type. |
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163 __ mov(O3_adapter, G3_method_handle); |
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164 trace_method_handle(_masm, "invokeGeneric"); |
| 1503 | 165 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
| 166 | |
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167 __ bind(sorry_no_invoke_generic); // no invokeGeneric implementation available! |
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168 __ mov(O0_mtype, G5_method_type); // required by throw_WrongMethodType |
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169 // mov(G3_method_handle, G3_method_handle); // already in this register |
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170 __ jump_to(AddressLiteral(Interpreter::throw_WrongMethodType_entry()), O1_scratch); |
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171 __ delayed()->nop(); |
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172 |
| 1503 | 173 return entry_point; |
| 710 | 174 } |
| 175 | |
| 1503 | 176 |
| 177 #ifdef ASSERT | |
| 178 static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, Register temp_reg, const char* error_message) { | |
| 179 // Verify that argslot lies within (Gargs, FP]. | |
| 180 Label L_ok, L_bad; | |
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181 BLOCK_COMMENT("{ verify_argslot"); |
| 1503 | 182 #ifdef _LP64 |
| 183 __ add(FP, STACK_BIAS, temp_reg); | |
| 184 __ cmp(argslot_reg, temp_reg); | |
| 185 #else | |
| 186 __ cmp(argslot_reg, FP); | |
| 187 #endif | |
| 188 __ brx(Assembler::greaterUnsigned, false, Assembler::pn, L_bad); | |
| 189 __ delayed()->nop(); | |
| 190 __ cmp(Gargs, argslot_reg); | |
| 191 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok); | |
| 192 __ delayed()->nop(); | |
| 193 __ bind(L_bad); | |
| 194 __ stop(error_message); | |
| 195 __ bind(L_ok); | |
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196 BLOCK_COMMENT("} verify_argslot"); |
| 1503 | 197 } |
| 198 #endif | |
| 199 | |
| 200 | |
| 201 // Helper to insert argument slots into the stack. | |
| 202 // arg_slots must be a multiple of stack_move_unit() and <= 0 | |
| 203 void MethodHandles::insert_arg_slots(MacroAssembler* _masm, | |
| 204 RegisterOrConstant arg_slots, | |
| 205 int arg_mask, | |
| 206 Register argslot_reg, | |
| 207 Register temp_reg, Register temp2_reg, Register temp3_reg) { | |
| 208 assert(temp3_reg != noreg, "temp3 required"); | |
| 209 assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg, | |
| 210 (!arg_slots.is_register() ? Gargs : arg_slots.as_register())); | |
| 211 | |
| 212 #ifdef ASSERT | |
| 213 verify_argslot(_masm, argslot_reg, temp_reg, "insertion point must fall within current frame"); | |
| 214 if (arg_slots.is_register()) { | |
| 215 Label L_ok, L_bad; | |
| 216 __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD); | |
| 217 __ br(Assembler::greater, false, Assembler::pn, L_bad); | |
| 218 __ delayed()->nop(); | |
| 219 __ btst(-stack_move_unit() - 1, arg_slots.as_register()); | |
| 220 __ br(Assembler::zero, false, Assembler::pt, L_ok); | |
| 221 __ delayed()->nop(); | |
| 222 __ bind(L_bad); | |
| 223 __ stop("assert arg_slots <= 0 and clear low bits"); | |
| 224 __ bind(L_ok); | |
| 225 } else { | |
| 226 assert(arg_slots.as_constant() <= 0, ""); | |
| 227 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
| 228 } | |
| 229 #endif // ASSERT | |
| 230 | |
| 231 #ifdef _LP64 | |
| 232 if (arg_slots.is_register()) { | |
| 233 // Was arg_slots register loaded as signed int? | |
| 234 Label L_ok; | |
| 235 __ sll(arg_slots.as_register(), BitsPerInt, temp_reg); | |
| 236 __ sra(temp_reg, BitsPerInt, temp_reg); | |
| 237 __ cmp(arg_slots.as_register(), temp_reg); | |
| 238 __ br(Assembler::equal, false, Assembler::pt, L_ok); | |
| 239 __ delayed()->nop(); | |
| 240 __ stop("arg_slots register not loaded as signed int"); | |
| 241 __ bind(L_ok); | |
| 242 } | |
| 243 #endif | |
| 244 | |
| 245 // Make space on the stack for the inserted argument(s). | |
| 246 // Then pull down everything shallower than argslot_reg. | |
| 247 // The stacked return address gets pulled down with everything else. | |
| 248 // That is, copy [sp, argslot) downward by -size words. In pseudo-code: | |
| 249 // sp -= size; | |
| 250 // for (temp = sp + size; temp < argslot; temp++) | |
| 251 // temp[-size] = temp[0] | |
| 252 // argslot -= size; | |
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253 BLOCK_COMMENT("insert_arg_slots {"); |
| 1503 | 254 RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg); |
| 255 | |
| 256 // Keep the stack pointer 2*wordSize aligned. | |
| 257 const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1); | |
| 258 RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg); | |
| 259 __ add(SP, masked_offset, SP); | |
| 260 | |
| 261 __ mov(Gargs, temp_reg); // source pointer for copy | |
| 262 __ add(Gargs, offset, Gargs); | |
| 263 | |
| 264 { | |
| 265 Label loop; | |
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266 __ BIND(loop); |
| 1503 | 267 // pull one word down each time through the loop |
| 268 __ ld_ptr(Address(temp_reg, 0), temp2_reg); | |
| 269 __ st_ptr(temp2_reg, Address(temp_reg, offset)); | |
| 270 __ add(temp_reg, wordSize, temp_reg); | |
| 271 __ cmp(temp_reg, argslot_reg); | |
| 272 __ brx(Assembler::less, false, Assembler::pt, loop); | |
| 273 __ delayed()->nop(); // FILLME | |
| 274 } | |
| 275 | |
| 276 // Now move the argslot down, to point to the opened-up space. | |
| 277 __ add(argslot_reg, offset, argslot_reg); | |
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278 BLOCK_COMMENT("} insert_arg_slots"); |
| 1503 | 279 } |
| 280 | |
| 281 | |
| 282 // Helper to remove argument slots from the stack. | |
| 283 // arg_slots must be a multiple of stack_move_unit() and >= 0 | |
| 284 void MethodHandles::remove_arg_slots(MacroAssembler* _masm, | |
| 285 RegisterOrConstant arg_slots, | |
| 286 Register argslot_reg, | |
| 287 Register temp_reg, Register temp2_reg, Register temp3_reg) { | |
| 288 assert(temp3_reg != noreg, "temp3 required"); | |
| 289 assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg, | |
| 290 (!arg_slots.is_register() ? Gargs : arg_slots.as_register())); | |
| 291 | |
| 292 RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg); | |
| 293 | |
| 294 #ifdef ASSERT | |
| 295 // Verify that [argslot..argslot+size) lies within (Gargs, FP). | |
| 296 __ add(argslot_reg, offset, temp2_reg); | |
| 297 verify_argslot(_masm, temp2_reg, temp_reg, "deleted argument(s) must fall within current frame"); | |
| 298 if (arg_slots.is_register()) { | |
| 299 Label L_ok, L_bad; | |
| 300 __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD); | |
| 301 __ br(Assembler::less, false, Assembler::pn, L_bad); | |
| 302 __ delayed()->nop(); | |
| 303 __ btst(-stack_move_unit() - 1, arg_slots.as_register()); | |
| 304 __ br(Assembler::zero, false, Assembler::pt, L_ok); | |
| 305 __ delayed()->nop(); | |
| 306 __ bind(L_bad); | |
| 307 __ stop("assert arg_slots >= 0 and clear low bits"); | |
| 308 __ bind(L_ok); | |
| 309 } else { | |
| 310 assert(arg_slots.as_constant() >= 0, ""); | |
| 311 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
| 312 } | |
| 313 #endif // ASSERT | |
| 314 | |
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315 BLOCK_COMMENT("remove_arg_slots {"); |
| 1503 | 316 // Pull up everything shallower than argslot. |
| 317 // Then remove the excess space on the stack. | |
| 318 // The stacked return address gets pulled up with everything else. | |
| 319 // That is, copy [sp, argslot) upward by size words. In pseudo-code: | |
| 320 // for (temp = argslot-1; temp >= sp; --temp) | |
| 321 // temp[size] = temp[0] | |
| 322 // argslot += size; | |
| 323 // sp += size; | |
| 324 __ sub(argslot_reg, wordSize, temp_reg); // source pointer for copy | |
| 325 { | |
| 326 Label loop; | |
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327 __ BIND(loop); |
| 1503 | 328 // pull one word up each time through the loop |
| 329 __ ld_ptr(Address(temp_reg, 0), temp2_reg); | |
| 330 __ st_ptr(temp2_reg, Address(temp_reg, offset)); | |
| 331 __ sub(temp_reg, wordSize, temp_reg); | |
| 332 __ cmp(temp_reg, Gargs); | |
| 333 __ brx(Assembler::greaterEqual, false, Assembler::pt, loop); | |
| 334 __ delayed()->nop(); // FILLME | |
| 335 } | |
| 336 | |
| 337 // Now move the argslot up, to point to the just-copied block. | |
| 338 __ add(Gargs, offset, Gargs); | |
| 339 // And adjust the argslot address to point at the deletion point. | |
| 340 __ add(argslot_reg, offset, argslot_reg); | |
| 341 | |
| 342 // Keep the stack pointer 2*wordSize aligned. | |
| 343 const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1); | |
| 344 RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg); | |
| 345 __ add(SP, masked_offset, SP); | |
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346 BLOCK_COMMENT("} remove_arg_slots"); |
| 1503 | 347 } |
| 348 | |
| 349 | |
| 350 #ifndef PRODUCT | |
| 351 extern "C" void print_method_handle(oop mh); | |
| 352 void trace_method_handle_stub(const char* adaptername, | |
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353 oopDesc* mh) { |
| 1503 | 354 printf("MH %s mh="INTPTR_FORMAT"\n", adaptername, (intptr_t) mh); |
| 355 print_method_handle(mh); | |
| 356 } | |
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357 void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) { |
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358 if (!TraceMethodHandles) return; |
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359 BLOCK_COMMENT("trace_method_handle {"); |
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360 // save: Gargs, O5_savedSP |
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361 __ save_frame(16); |
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362 __ set((intptr_t) adaptername, O0); |
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363 __ mov(G3_method_handle, O1); |
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364 __ mov(G3_method_handle, L3); |
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365 __ mov(Gargs, L4); |
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366 __ mov(G5_method_type, L5); |
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367 __ call_VM_leaf(L7, CAST_FROM_FN_PTR(address, trace_method_handle_stub)); |
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368 |
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369 __ mov(L3, G3_method_handle); |
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370 __ mov(L4, Gargs); |
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371 __ mov(L5, G5_method_type); |
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372 __ restore(); |
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373 BLOCK_COMMENT("} trace_method_handle"); |
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374 } |
| 1503 | 375 #endif // PRODUCT |
| 376 | |
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377 // which conversion op types are implemented here? |
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378 int MethodHandles::adapter_conversion_ops_supported_mask() { |
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379 return ((1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_ONLY) |
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380 |(1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_RAW) |
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381 |(1<<java_lang_invoke_AdapterMethodHandle::OP_CHECK_CAST) |
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382 |(1<<java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_PRIM) |
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383 |(1<<java_lang_invoke_AdapterMethodHandle::OP_REF_TO_PRIM) |
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384 |(1<<java_lang_invoke_AdapterMethodHandle::OP_SWAP_ARGS) |
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385 |(1<<java_lang_invoke_AdapterMethodHandle::OP_ROT_ARGS) |
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386 |(1<<java_lang_invoke_AdapterMethodHandle::OP_DUP_ARGS) |
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387 |(1<<java_lang_invoke_AdapterMethodHandle::OP_DROP_ARGS) |
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388 //|(1<<java_lang_invoke_AdapterMethodHandle::OP_SPREAD_ARGS) //BUG! |
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389 ); |
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390 // FIXME: MethodHandlesTest gets a crash if we enable OP_SPREAD_ARGS. |
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391 } |
| 1503 | 392 |
| 393 //------------------------------------------------------------------------------ | |
| 394 // MethodHandles::generate_method_handle_stub | |
| 395 // | |
| 710 | 396 // Generate an "entry" field for a method handle. |
| 397 // This determines how the method handle will respond to calls. | |
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398 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) { |
| 1503 | 399 // Here is the register state during an interpreted call, |
| 400 // as set up by generate_method_handle_interpreter_entry(): | |
| 401 // - G5: garbage temp (was MethodHandle.invoke methodOop, unused) | |
| 402 // - G3: receiver method handle | |
| 403 // - O5_savedSP: sender SP (must preserve) | |
| 404 | |
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405 const Register O0_argslot = O0; |
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406 const Register O1_scratch = O1; |
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407 const Register O2_scratch = O2; |
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408 const Register O3_scratch = O3; |
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409 const Register G5_index = G5; |
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410 |
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411 // Argument registers for _raise_exception. |
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412 const Register O0_code = O0; |
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413 const Register O1_actual = O1; |
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414 const Register O2_required = O2; |
| 1503 | 415 |
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416 guarantee(java_lang_invoke_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets"); |
| 1503 | 417 |
| 418 // Some handy addresses: | |
| 419 Address G5_method_fie( G5_method, in_bytes(methodOopDesc::from_interpreted_offset())); | |
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420 Address G5_method_fce( G5_method, in_bytes(methodOopDesc::from_compiled_offset())); |
| 1503 | 421 |
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422 Address G3_mh_vmtarget( G3_method_handle, java_lang_invoke_MethodHandle::vmtarget_offset_in_bytes()); |
| 1503 | 423 |
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424 Address G3_dmh_vmindex( G3_method_handle, java_lang_invoke_DirectMethodHandle::vmindex_offset_in_bytes()); |
| 1503 | 425 |
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426 Address G3_bmh_vmargslot( G3_method_handle, java_lang_invoke_BoundMethodHandle::vmargslot_offset_in_bytes()); |
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427 Address G3_bmh_argument( G3_method_handle, java_lang_invoke_BoundMethodHandle::argument_offset_in_bytes()); |
| 1503 | 428 |
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429 Address G3_amh_vmargslot( G3_method_handle, java_lang_invoke_AdapterMethodHandle::vmargslot_offset_in_bytes()); |
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430 Address G3_amh_argument ( G3_method_handle, java_lang_invoke_AdapterMethodHandle::argument_offset_in_bytes()); |
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431 Address G3_amh_conversion(G3_method_handle, java_lang_invoke_AdapterMethodHandle::conversion_offset_in_bytes()); |
| 1503 | 432 |
| 433 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); | |
| 434 | |
| 435 if (have_entry(ek)) { | |
| 436 __ nop(); // empty stubs make SG sick | |
| 437 return; | |
| 438 } | |
| 439 | |
| 440 address interp_entry = __ pc(); | |
| 441 | |
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442 trace_method_handle(_masm, entry_name(ek)); |
| 1503 | 443 |
| 444 switch ((int) ek) { | |
| 445 case _raise_exception: | |
| 446 { | |
| 447 // Not a real MH entry, but rather shared code for raising an | |
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448 // exception. Since we use the compiled entry, arguments are |
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449 // expected in compiler argument registers. |
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450 assert(raise_exception_method(), "must be set"); |
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451 assert(raise_exception_method()->from_compiled_entry(), "method must be linked"); |
| 1503 | 452 |
| 453 __ mov(O5_savedSP, SP); // Cut the stack back to where the caller started. | |
| 454 | |
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455 Label L_no_method; |
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456 // FIXME: fill in _raise_exception_method with a suitable java.lang.invoke method |
| 1503 | 457 __ set(AddressLiteral((address) &_raise_exception_method), G5_method); |
| 458 __ ld_ptr(Address(G5_method, 0), G5_method); | |
| 459 __ tst(G5_method); | |
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460 __ brx(Assembler::zero, false, Assembler::pn, L_no_method); |
| 1503 | 461 __ delayed()->nop(); |
| 462 | |
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463 const int jobject_oop_offset = 0; |
| 1503 | 464 __ ld_ptr(Address(G5_method, jobject_oop_offset), G5_method); |
| 465 __ tst(G5_method); | |
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466 __ brx(Assembler::zero, false, Assembler::pn, L_no_method); |
| 1503 | 467 __ delayed()->nop(); |
| 468 | |
| 469 __ verify_oop(G5_method); | |
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470 __ jump_indirect_to(G5_method_fce, O3_scratch); // jump to compiled entry |
| 1503 | 471 __ delayed()->nop(); |
| 472 | |
| 473 // Do something that is at least causes a valid throw from the interpreter. | |
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474 __ bind(L_no_method); |
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475 __ unimplemented("call throw_WrongMethodType_entry"); |
| 1503 | 476 } |
| 477 break; | |
| 478 | |
| 479 case _invokestatic_mh: | |
| 480 case _invokespecial_mh: | |
| 481 { | |
| 1846 | 482 __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop |
| 1503 | 483 __ verify_oop(G5_method); |
| 484 // Same as TemplateTable::invokestatic or invokespecial, | |
| 485 // minus the CP setup and profiling: | |
| 486 if (ek == _invokespecial_mh) { | |
| 487 // Must load & check the first argument before entering the target method. | |
| 488 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); | |
| 489 __ ld_ptr(__ argument_address(O0_argslot), G3_method_handle); | |
| 490 __ null_check(G3_method_handle); | |
| 491 __ verify_oop(G3_method_handle); | |
| 492 } | |
| 493 __ jump_indirect_to(G5_method_fie, O1_scratch); | |
| 494 __ delayed()->nop(); | |
| 495 } | |
| 496 break; | |
| 497 | |
| 498 case _invokevirtual_mh: | |
| 499 { | |
| 500 // Same as TemplateTable::invokevirtual, | |
| 501 // minus the CP setup and profiling: | |
| 502 | |
| 503 // Pick out the vtable index and receiver offset from the MH, | |
| 504 // and then we can discard it: | |
| 505 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); | |
| 506 __ ldsw(G3_dmh_vmindex, G5_index); | |
| 507 // Note: The verifier allows us to ignore G3_mh_vmtarget. | |
| 508 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle); | |
| 509 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes()); | |
| 510 | |
| 511 // Get receiver klass: | |
| 512 Register O0_klass = O0_argslot; | |
| 513 __ load_klass(G3_method_handle, O0_klass); | |
| 514 __ verify_oop(O0_klass); | |
| 515 | |
| 516 // Get target methodOop & entry point: | |
| 517 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
| 518 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); | |
| 519 | |
| 520 __ sll_ptr(G5_index, LogBytesPerWord, G5_index); | |
| 521 __ add(O0_klass, G5_index, O0_klass); | |
| 522 Address vtable_entry_addr(O0_klass, base + vtableEntry::method_offset_in_bytes()); | |
| 523 __ ld_ptr(vtable_entry_addr, G5_method); | |
| 524 | |
| 525 __ verify_oop(G5_method); | |
| 526 __ jump_indirect_to(G5_method_fie, O1_scratch); | |
| 527 __ delayed()->nop(); | |
| 528 } | |
| 529 break; | |
| 530 | |
| 531 case _invokeinterface_mh: | |
| 532 { | |
| 533 // Same as TemplateTable::invokeinterface, | |
| 534 // minus the CP setup and profiling: | |
| 535 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); | |
| 536 Register O1_intf = O1_scratch; | |
| 1846 | 537 __ load_heap_oop(G3_mh_vmtarget, O1_intf); |
| 1503 | 538 __ ldsw(G3_dmh_vmindex, G5_index); |
| 539 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle); | |
| 540 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes()); | |
| 541 | |
| 542 // Get receiver klass: | |
| 543 Register O0_klass = O0_argslot; | |
| 544 __ load_klass(G3_method_handle, O0_klass); | |
| 545 __ verify_oop(O0_klass); | |
| 546 | |
| 547 // Get interface: | |
| 548 Label no_such_interface; | |
| 549 __ verify_oop(O1_intf); | |
| 550 __ lookup_interface_method(O0_klass, O1_intf, | |
| 551 // Note: next two args must be the same: | |
| 552 G5_index, G5_method, | |
| 553 O2_scratch, | |
| 554 O3_scratch, | |
| 555 no_such_interface); | |
| 556 | |
| 557 __ verify_oop(G5_method); | |
| 558 __ jump_indirect_to(G5_method_fie, O1_scratch); | |
| 559 __ delayed()->nop(); | |
| 560 | |
| 561 __ bind(no_such_interface); | |
| 562 // Throw an exception. | |
| 563 // For historical reasons, it will be IncompatibleClassChangeError. | |
| 564 __ unimplemented("not tested yet"); | |
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565 __ ld_ptr(Address(O1_intf, java_mirror_offset), O2_required); // required interface |
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566 __ mov( O0_klass, O1_actual); // bad receiver |
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567 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O3_scratch); |
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568 __ delayed()->mov(Bytecodes::_invokeinterface, O0_code); // who is complaining? |
| 1503 | 569 } |
| 570 break; | |
| 571 | |
| 572 case _bound_ref_mh: | |
| 573 case _bound_int_mh: | |
| 574 case _bound_long_mh: | |
| 575 case _bound_ref_direct_mh: | |
| 576 case _bound_int_direct_mh: | |
| 577 case _bound_long_direct_mh: | |
| 578 { | |
| 579 const bool direct_to_method = (ek >= _bound_ref_direct_mh); | |
| 580 BasicType arg_type = T_ILLEGAL; | |
| 581 int arg_mask = _INSERT_NO_MASK; | |
| 582 int arg_slots = -1; | |
| 583 get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots); | |
| 584 | |
| 585 // Make room for the new argument: | |
| 586 __ ldsw(G3_bmh_vmargslot, O0_argslot); | |
| 587 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); | |
| 588 | |
| 589 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, O0_argslot, O1_scratch, O2_scratch, G5_index); | |
| 590 | |
| 591 // Store bound argument into the new stack slot: | |
| 1846 | 592 __ load_heap_oop(G3_bmh_argument, O1_scratch); |
| 1503 | 593 if (arg_type == T_OBJECT) { |
| 594 __ st_ptr(O1_scratch, Address(O0_argslot, 0)); | |
| 595 } else { | |
| 596 Address prim_value_addr(O1_scratch, java_lang_boxing_object::value_offset_in_bytes(arg_type)); | |
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597 const int arg_size = type2aelembytes(arg_type); |
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598 __ load_sized_value(prim_value_addr, O2_scratch, arg_size, is_signed_subword_type(arg_type)); |
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599 __ store_sized_value(O2_scratch, Address(O0_argslot, 0), arg_size); // long store uses O2/O3 on !_LP64 |
| 1503 | 600 } |
| 601 | |
| 602 if (direct_to_method) { | |
| 1846 | 603 __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop |
| 1503 | 604 __ verify_oop(G5_method); |
| 605 __ jump_indirect_to(G5_method_fie, O1_scratch); | |
| 606 __ delayed()->nop(); | |
| 607 } else { | |
| 1846 | 608 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); // target is a methodOop |
| 1503 | 609 __ verify_oop(G3_method_handle); |
| 610 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); | |
| 611 } | |
| 612 } | |
| 613 break; | |
| 614 | |
| 615 case _adapter_retype_only: | |
| 616 case _adapter_retype_raw: | |
| 617 // Immediately jump to the next MH layer: | |
| 1846 | 618 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
| 1503 | 619 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
| 620 // This is OK when all parameter types widen. | |
| 621 // It is also OK when a return type narrows. | |
| 622 break; | |
| 623 | |
| 624 case _adapter_check_cast: | |
| 625 { | |
| 626 // Temps: | |
| 627 Register G5_klass = G5_index; // Interesting AMH data. | |
| 628 | |
| 629 // Check a reference argument before jumping to the next layer of MH: | |
| 630 __ ldsw(G3_amh_vmargslot, O0_argslot); | |
| 631 Address vmarg = __ argument_address(O0_argslot); | |
| 632 | |
| 633 // What class are we casting to? | |
| 1846 | 634 __ load_heap_oop(G3_amh_argument, G5_klass); // This is a Class object! |
| 635 __ load_heap_oop(Address(G5_klass, java_lang_Class::klass_offset_in_bytes()), G5_klass); | |
| 1503 | 636 |
| 637 Label done; | |
| 638 __ ld_ptr(vmarg, O1_scratch); | |
| 639 __ tst(O1_scratch); | |
| 640 __ brx(Assembler::zero, false, Assembler::pn, done); // No cast if null. | |
| 641 __ delayed()->nop(); | |
| 642 __ load_klass(O1_scratch, O1_scratch); | |
| 643 | |
| 644 // Live at this point: | |
| 645 // - G5_klass : klass required by the target method | |
| 646 // - O1_scratch : argument klass to test | |
| 647 // - G3_method_handle: adapter method handle | |
| 648 __ check_klass_subtype(O1_scratch, G5_klass, O0_argslot, O2_scratch, done); | |
| 649 | |
| 650 // If we get here, the type check failed! | |
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651 __ load_heap_oop(G3_amh_argument, O2_required); // required class |
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652 __ ld_ptr( vmarg, O1_actual); // bad object |
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653 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O3_scratch); |
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654 __ delayed()->mov(Bytecodes::_checkcast, O0_code); // who is complaining? |
| 1503 | 655 |
| 656 __ bind(done); | |
| 657 // Get the new MH: | |
| 1846 | 658 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
| 1503 | 659 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
| 660 } | |
| 661 break; | |
| 662 | |
| 663 case _adapter_prim_to_prim: | |
| 664 case _adapter_ref_to_prim: | |
| 665 // Handled completely by optimized cases. | |
| 666 __ stop("init_AdapterMethodHandle should not issue this"); | |
| 667 break; | |
| 668 | |
| 669 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim | |
| 670 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim | |
| 671 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim | |
| 672 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim | |
| 673 { | |
| 674 // Perform an in-place conversion to int or an int subword. | |
| 675 __ ldsw(G3_amh_vmargslot, O0_argslot); | |
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676 Address value; |
| 1503 | 677 Address vmarg = __ argument_address(O0_argslot); |
| 678 bool value_left_justified = false; | |
| 679 | |
| 680 switch (ek) { | |
| 681 case _adapter_opt_i2i: | |
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682 value = vmarg; |
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683 break; |
| 1503 | 684 case _adapter_opt_l2i: |
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685 { |
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686 // just delete the extra slot |
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687 #ifdef _LP64 |
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688 // In V9, longs are given 2 64-bit slots in the interpreter, but the |
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689 // data is passed in only 1 slot. |
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690 // Keep the second slot. |
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691 __ add(Gargs, __ argument_offset(O0_argslot, -1), O0_argslot); |
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692 remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch); |
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693 value = Address(O0_argslot, 4); // Get least-significant 32-bit of 64-bit value. |
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694 vmarg = Address(O0_argslot, Interpreter::stackElementSize); |
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695 #else |
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696 // Keep the first slot. |
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697 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); |
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698 remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch); |
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699 value = Address(O0_argslot, 0); |
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700 vmarg = value; |
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701 #endif |
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702 } |
| 1503 | 703 break; |
| 704 case _adapter_opt_unboxi: | |
| 705 { | |
| 706 // Load the value up from the heap. | |
| 707 __ ld_ptr(vmarg, O1_scratch); | |
| 708 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); | |
| 709 #ifdef ASSERT | |
| 710 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { | |
| 711 if (is_subword_type(BasicType(bt))) | |
| 712 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), ""); | |
| 713 } | |
| 714 #endif | |
| 715 __ null_check(O1_scratch, value_offset); | |
| 716 value = Address(O1_scratch, value_offset); | |
| 717 #ifdef _BIG_ENDIAN | |
| 718 // Values stored in objects are packed. | |
| 719 value_left_justified = true; | |
| 720 #endif | |
| 721 } | |
| 722 break; | |
| 723 default: | |
| 724 ShouldNotReachHere(); | |
| 725 } | |
| 726 | |
| 727 // This check is required on _BIG_ENDIAN | |
| 728 Register G5_vminfo = G5_index; | |
| 729 __ ldsw(G3_amh_conversion, G5_vminfo); | |
| 730 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
| 731 | |
| 732 // Original 32-bit vmdata word must be of this form: | |
| 733 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 | | |
| 734 __ lduw(value, O1_scratch); | |
| 735 if (!value_left_justified) | |
| 736 __ sll(O1_scratch, G5_vminfo, O1_scratch); | |
| 737 Label zero_extend, done; | |
| 738 __ btst(CONV_VMINFO_SIGN_FLAG, G5_vminfo); | |
| 739 __ br(Assembler::zero, false, Assembler::pn, zero_extend); | |
| 740 __ delayed()->nop(); | |
| 741 | |
| 742 // this path is taken for int->byte, int->short | |
| 743 __ sra(O1_scratch, G5_vminfo, O1_scratch); | |
| 744 __ ba(false, done); | |
| 745 __ delayed()->nop(); | |
| 746 | |
| 747 __ bind(zero_extend); | |
| 748 // this is taken for int->char | |
| 749 __ srl(O1_scratch, G5_vminfo, O1_scratch); | |
| 750 | |
| 751 __ bind(done); | |
| 752 __ st(O1_scratch, vmarg); | |
| 753 | |
| 754 // Get the new MH: | |
| 1846 | 755 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
| 1503 | 756 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
| 757 } | |
| 758 break; | |
| 759 | |
| 760 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim | |
| 761 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim | |
| 762 { | |
| 763 // Perform an in-place int-to-long or ref-to-long conversion. | |
| 764 __ ldsw(G3_amh_vmargslot, O0_argslot); | |
| 765 | |
| 766 // On big-endian machine we duplicate the slot and store the MSW | |
| 767 // in the first slot. | |
| 768 __ add(Gargs, __ argument_offset(O0_argslot, 1), O0_argslot); | |
| 769 | |
| 770 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, O0_argslot, O1_scratch, O2_scratch, G5_index); | |
| 771 | |
| 772 Address arg_lsw(O0_argslot, 0); | |
| 1506 | 773 Address arg_msw(O0_argslot, -Interpreter::stackElementSize); |
| 1503 | 774 |
| 775 switch (ek) { | |
| 776 case _adapter_opt_i2l: | |
| 777 { | |
|
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778 __ ldsw(arg_lsw, O2_scratch); // Load LSW |
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779 NOT_LP64(__ srlx(O2_scratch, BitsPerInt, O3_scratch)); // Move high bits to lower bits for std |
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780 __ st_long(O2_scratch, arg_msw); // Uses O2/O3 on !_LP64 |
| 1503 | 781 } |
| 782 break; | |
| 783 case _adapter_opt_unboxl: | |
| 784 { | |
| 785 // Load the value up from the heap. | |
| 786 __ ld_ptr(arg_lsw, O1_scratch); | |
| 787 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG); | |
| 788 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), ""); | |
| 789 __ null_check(O1_scratch, value_offset); | |
| 790 __ ld_long(Address(O1_scratch, value_offset), O2_scratch); // Uses O2/O3 on !_LP64 | |
| 791 __ st_long(O2_scratch, arg_msw); | |
| 792 } | |
| 793 break; | |
| 794 default: | |
| 795 ShouldNotReachHere(); | |
| 796 } | |
| 797 | |
| 1846 | 798 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
| 1503 | 799 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
| 800 } | |
| 801 break; | |
| 802 | |
| 803 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim | |
| 804 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim | |
| 805 { | |
| 806 // perform an in-place floating primitive conversion | |
| 807 __ unimplemented(entry_name(ek)); | |
| 808 } | |
| 809 break; | |
| 810 | |
| 811 case _adapter_prim_to_ref: | |
| 812 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 813 break; | |
| 814 | |
| 815 case _adapter_swap_args: | |
| 816 case _adapter_rot_args: | |
| 817 // handled completely by optimized cases | |
| 818 __ stop("init_AdapterMethodHandle should not issue this"); | |
| 819 break; | |
| 820 | |
| 821 case _adapter_opt_swap_1: | |
| 822 case _adapter_opt_swap_2: | |
| 823 case _adapter_opt_rot_1_up: | |
| 824 case _adapter_opt_rot_1_down: | |
| 825 case _adapter_opt_rot_2_up: | |
| 826 case _adapter_opt_rot_2_down: | |
| 827 { | |
| 828 int swap_bytes = 0, rotate = 0; | |
| 829 get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate); | |
| 830 | |
| 831 // 'argslot' is the position of the first argument to swap. | |
| 832 __ ldsw(G3_amh_vmargslot, O0_argslot); | |
| 833 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); | |
| 834 | |
| 835 // 'vminfo' is the second. | |
| 836 Register O1_destslot = O1_scratch; | |
| 837 __ ldsw(G3_amh_conversion, O1_destslot); | |
| 838 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
| 839 __ and3(O1_destslot, CONV_VMINFO_MASK, O1_destslot); | |
| 840 __ add(Gargs, __ argument_offset(O1_destslot), O1_destslot); | |
| 841 | |
| 842 if (!rotate) { | |
| 843 for (int i = 0; i < swap_bytes; i += wordSize) { | |
| 844 __ ld_ptr(Address(O0_argslot, i), O2_scratch); | |
| 845 __ ld_ptr(Address(O1_destslot, i), O3_scratch); | |
| 846 __ st_ptr(O3_scratch, Address(O0_argslot, i)); | |
| 847 __ st_ptr(O2_scratch, Address(O1_destslot, i)); | |
| 848 } | |
| 849 } else { | |
| 850 // Save the first chunk, which is going to get overwritten. | |
| 851 switch (swap_bytes) { | |
| 852 case 4 : __ lduw(Address(O0_argslot, 0), O2_scratch); break; | |
| 853 case 16: __ ldx( Address(O0_argslot, 8), O3_scratch); //fall-thru | |
| 854 case 8 : __ ldx( Address(O0_argslot, 0), O2_scratch); break; | |
| 855 default: ShouldNotReachHere(); | |
| 856 } | |
| 857 | |
| 858 if (rotate > 0) { | |
| 859 // Rorate upward. | |
| 860 __ sub(O0_argslot, swap_bytes, O0_argslot); | |
| 861 #if ASSERT | |
| 862 { | |
| 863 // Verify that argslot > destslot, by at least swap_bytes. | |
| 864 Label L_ok; | |
| 865 __ cmp(O0_argslot, O1_destslot); | |
| 866 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, L_ok); | |
| 867 __ delayed()->nop(); | |
| 868 __ stop("source must be above destination (upward rotation)"); | |
| 869 __ bind(L_ok); | |
| 870 } | |
| 871 #endif | |
| 872 // Work argslot down to destslot, copying contiguous data upwards. | |
| 873 // Pseudo-code: | |
| 874 // argslot = src_addr - swap_bytes | |
| 875 // destslot = dest_addr | |
| 876 // while (argslot >= destslot) { | |
| 877 // *(argslot + swap_bytes) = *(argslot + 0); | |
| 878 // argslot--; | |
| 879 // } | |
| 880 Label loop; | |
| 881 __ bind(loop); | |
| 882 __ ld_ptr(Address(O0_argslot, 0), G5_index); | |
| 883 __ st_ptr(G5_index, Address(O0_argslot, swap_bytes)); | |
| 884 __ sub(O0_argslot, wordSize, O0_argslot); | |
| 885 __ cmp(O0_argslot, O1_destslot); | |
| 886 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, loop); | |
| 887 __ delayed()->nop(); // FILLME | |
| 888 } else { | |
| 889 __ add(O0_argslot, swap_bytes, O0_argslot); | |
| 890 #if ASSERT | |
| 891 { | |
| 892 // Verify that argslot < destslot, by at least swap_bytes. | |
| 893 Label L_ok; | |
| 894 __ cmp(O0_argslot, O1_destslot); | |
| 895 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok); | |
| 896 __ delayed()->nop(); | |
| 897 __ stop("source must be above destination (upward rotation)"); | |
| 898 __ bind(L_ok); | |
| 899 } | |
| 900 #endif | |
| 901 // Work argslot up to destslot, copying contiguous data downwards. | |
| 902 // Pseudo-code: | |
| 903 // argslot = src_addr + swap_bytes | |
| 904 // destslot = dest_addr | |
| 905 // while (argslot >= destslot) { | |
| 906 // *(argslot - swap_bytes) = *(argslot + 0); | |
| 907 // argslot++; | |
| 908 // } | |
| 909 Label loop; | |
| 910 __ bind(loop); | |
| 911 __ ld_ptr(Address(O0_argslot, 0), G5_index); | |
| 912 __ st_ptr(G5_index, Address(O0_argslot, -swap_bytes)); | |
| 913 __ add(O0_argslot, wordSize, O0_argslot); | |
| 914 __ cmp(O0_argslot, O1_destslot); | |
| 915 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, loop); | |
| 916 __ delayed()->nop(); // FILLME | |
| 917 } | |
| 918 | |
| 919 // Store the original first chunk into the destination slot, now free. | |
| 920 switch (swap_bytes) { | |
| 921 case 4 : __ stw(O2_scratch, Address(O1_destslot, 0)); break; | |
| 922 case 16: __ stx(O3_scratch, Address(O1_destslot, 8)); // fall-thru | |
| 923 case 8 : __ stx(O2_scratch, Address(O1_destslot, 0)); break; | |
| 924 default: ShouldNotReachHere(); | |
| 925 } | |
| 926 } | |
| 927 | |
| 1846 | 928 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
| 1503 | 929 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
| 930 } | |
| 931 break; | |
| 932 | |
| 933 case _adapter_dup_args: | |
| 934 { | |
| 935 // 'argslot' is the position of the first argument to duplicate. | |
| 936 __ ldsw(G3_amh_vmargslot, O0_argslot); | |
| 937 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); | |
| 938 | |
| 939 // 'stack_move' is negative number of words to duplicate. | |
| 940 Register G5_stack_move = G5_index; | |
| 941 __ ldsw(G3_amh_conversion, G5_stack_move); | |
| 942 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move); | |
| 943 | |
| 944 // Remember the old Gargs (argslot[0]). | |
| 945 Register O1_oldarg = O1_scratch; | |
| 946 __ mov(Gargs, O1_oldarg); | |
| 947 | |
| 948 // Move Gargs down to make room for dups. | |
| 949 __ sll_ptr(G5_stack_move, LogBytesPerWord, G5_stack_move); | |
| 950 __ add(Gargs, G5_stack_move, Gargs); | |
| 951 | |
| 952 // Compute the new Gargs (argslot[0]). | |
| 953 Register O2_newarg = O2_scratch; | |
| 954 __ mov(Gargs, O2_newarg); | |
| 955 | |
| 956 // Copy from oldarg[0...] down to newarg[0...] | |
| 957 // Pseude-code: | |
| 958 // O1_oldarg = old-Gargs | |
| 959 // O2_newarg = new-Gargs | |
| 960 // O0_argslot = argslot | |
| 961 // while (O2_newarg < O1_oldarg) *O2_newarg = *O0_argslot++ | |
| 962 Label loop; | |
| 963 __ bind(loop); | |
| 964 __ ld_ptr(Address(O0_argslot, 0), O3_scratch); | |
| 965 __ st_ptr(O3_scratch, Address(O2_newarg, 0)); | |
| 966 __ add(O0_argslot, wordSize, O0_argslot); | |
| 967 __ add(O2_newarg, wordSize, O2_newarg); | |
| 968 __ cmp(O2_newarg, O1_oldarg); | |
| 969 __ brx(Assembler::less, false, Assembler::pt, loop); | |
| 970 __ delayed()->nop(); // FILLME | |
| 971 | |
| 1846 | 972 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
| 1503 | 973 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
| 974 } | |
| 975 break; | |
| 976 | |
| 977 case _adapter_drop_args: | |
| 978 { | |
| 979 // 'argslot' is the position of the first argument to nuke. | |
| 980 __ ldsw(G3_amh_vmargslot, O0_argslot); | |
| 981 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); | |
| 982 | |
| 983 // 'stack_move' is number of words to drop. | |
| 984 Register G5_stack_move = G5_index; | |
| 985 __ ldsw(G3_amh_conversion, G5_stack_move); | |
| 986 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move); | |
| 987 | |
| 988 remove_arg_slots(_masm, G5_stack_move, O0_argslot, O1_scratch, O2_scratch, O3_scratch); | |
| 989 | |
| 1846 | 990 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
| 1503 | 991 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
| 992 } | |
| 993 break; | |
| 994 | |
| 995 case _adapter_collect_args: | |
| 996 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 997 break; | |
| 998 | |
| 999 case _adapter_spread_args: | |
| 1000 // Handled completely by optimized cases. | |
| 1001 __ stop("init_AdapterMethodHandle should not issue this"); | |
| 1002 break; | |
| 1003 | |
| 1004 case _adapter_opt_spread_0: | |
| 1005 case _adapter_opt_spread_1: | |
| 1006 case _adapter_opt_spread_more: | |
| 1007 { | |
| 1008 // spread an array out into a group of arguments | |
| 1009 __ unimplemented(entry_name(ek)); | |
| 1010 } | |
| 1011 break; | |
| 1012 | |
| 1013 case _adapter_flyby: | |
| 1014 case _adapter_ricochet: | |
| 1015 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 1016 break; | |
| 1017 | |
| 1018 default: | |
| 1019 ShouldNotReachHere(); | |
| 1020 } | |
| 1021 | |
| 1022 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry); | |
| 1023 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 1024 | |
| 1025 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie)); | |
| 710 | 1026 } |