Mercurial > hg > truffle
annotate src/cpu/x86/vm/methodHandles_x86.cpp @ 1978:2ca799d83d3c
Merge
| author | ohair |
|---|---|
| date | Tue, 30 Nov 2010 18:10:20 -0800 |
| parents | f95d63e2154a |
| children | 8d0b933dda2d |
| rev | line source |
|---|---|
| 710 | 1 /* |
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2 * Copyright (c) 1997, 2010, 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) { | |
| 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. | |
| 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 #ifdef ASSERT | |
| 1304 | 73 static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, |
| 710 | 74 const char* error_message) { |
| 75 // Verify that argslot lies within (rsp, rbp]. | |
| 76 Label L_ok, L_bad; | |
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77 BLOCK_COMMENT("{ verify_argslot"); |
| 1304 | 78 __ cmpptr(argslot_reg, rbp); |
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79 __ jccb(Assembler::above, L_bad); |
| 1304 | 80 __ cmpptr(rsp, argslot_reg); |
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81 __ jccb(Assembler::below, L_ok); |
| 710 | 82 __ bind(L_bad); |
| 83 __ stop(error_message); | |
| 84 __ bind(L_ok); | |
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85 BLOCK_COMMENT("} verify_argslot"); |
| 710 | 86 } |
| 87 #endif | |
| 88 | |
| 89 | |
| 90 // Code generation | |
| 91 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) { | |
| 92 // rbx: methodOop | |
| 93 // rcx: receiver method handle (must load from sp[MethodTypeForm.vmslots]) | |
| 94 // rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
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95 // rdx, rdi: garbage temp, blown away |
| 710 | 96 |
| 97 Register rbx_method = rbx; | |
| 98 Register rcx_recv = rcx; | |
| 99 Register rax_mtype = rax; | |
| 100 Register rdx_temp = rdx; | |
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101 Register rdi_temp = rdi; |
| 710 | 102 |
| 103 // emit WrongMethodType path first, to enable jccb back-branch from main path | |
| 104 Label wrong_method_type; | |
| 105 __ bind(wrong_method_type); | |
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106 Label invoke_generic_slow_path; |
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107 assert(methodOopDesc::intrinsic_id_size_in_bytes() == sizeof(u1), "");; |
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108 __ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) vmIntrinsics::_invokeExact); |
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109 __ jcc(Assembler::notEqual, invoke_generic_slow_path); |
| 710 | 110 __ push(rax_mtype); // required mtype |
| 111 __ push(rcx_recv); // bad mh (1st stacked argument) | |
| 112 __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); | |
| 113 | |
| 114 // here's where control starts out: | |
| 115 __ align(CodeEntryAlignment); | |
| 116 address entry_point = __ pc(); | |
| 117 | |
| 118 // fetch the MethodType from the method handle into rax (the 'check' register) | |
| 119 { | |
| 120 Register tem = rbx_method; | |
| 121 for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) { | |
| 122 __ movptr(rax_mtype, Address(tem, *pchase)); | |
| 123 tem = rax_mtype; // in case there is another indirection | |
| 124 } | |
| 125 } | |
| 126 | |
| 127 // given the MethodType, find out where the MH argument is buried | |
| 1846 | 128 __ load_heap_oop(rdx_temp, Address(rax_mtype, __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, rdi_temp))); |
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129 Register rdx_vmslots = rdx_temp; |
| 1846 | 130 __ movl(rdx_vmslots, Address(rdx_temp, __ delayed_value(java_dyn_MethodTypeForm::vmslots_offset_in_bytes, rdi_temp))); |
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131 __ movptr(rcx_recv, __ argument_address(rdx_vmslots)); |
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132 |
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133 trace_method_handle(_masm, "invokeExact"); |
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134 |
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135 __ check_method_handle_type(rax_mtype, rcx_recv, rdi_temp, wrong_method_type); |
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136 __ jump_to_method_handle_entry(rcx_recv, rdi_temp); |
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137 |
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138 // for invokeGeneric (only), apply argument and result conversions on the fly |
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139 __ bind(invoke_generic_slow_path); |
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140 #ifdef ASSERT |
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141 { Label L; |
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142 __ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) vmIntrinsics::_invokeGeneric); |
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143 __ jcc(Assembler::equal, L); |
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144 __ stop("bad methodOop::intrinsic_id"); |
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145 __ bind(L); |
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146 } |
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147 #endif //ASSERT |
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148 Register rbx_temp = rbx_method; // don't need it now |
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149 |
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150 // make room on the stack for another pointer: |
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151 Register rcx_argslot = rcx_recv; |
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152 __ lea(rcx_argslot, __ argument_address(rdx_vmslots, 1)); |
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153 insert_arg_slots(_masm, 2 * stack_move_unit(), _INSERT_REF_MASK, |
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154 rcx_argslot, rbx_temp, rdx_temp); |
| 710 | 155 |
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156 // load up an adapter from the calling type (Java weaves this) |
| 1846 | 157 __ load_heap_oop(rdx_temp, Address(rax_mtype, __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, rdi_temp))); |
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158 Register rdx_adapter = rdx_temp; |
| 1846 | 159 // __ load_heap_oop(rdx_adapter, Address(rdx_temp, java_dyn_MethodTypeForm::genericInvoker_offset_in_bytes())); |
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160 // deal with old JDK versions: |
| 1846 | 161 __ lea(rdi_temp, Address(rdx_temp, __ delayed_value(java_dyn_MethodTypeForm::genericInvoker_offset_in_bytes, rdi_temp))); |
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162 __ cmpptr(rdi_temp, rdx_temp); |
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163 Label sorry_no_invoke_generic; |
| 1846 | 164 __ jcc(Assembler::below, sorry_no_invoke_generic); |
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165 |
| 1846 | 166 __ load_heap_oop(rdx_adapter, Address(rdi_temp, 0)); |
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167 __ testptr(rdx_adapter, rdx_adapter); |
| 1846 | 168 __ jcc(Assembler::zero, sorry_no_invoke_generic); |
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169 __ movptr(Address(rcx_argslot, 1 * Interpreter::stackElementSize), rdx_adapter); |
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170 // As a trusted first argument, pass the type being called, so the adapter knows |
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171 // the actual types of the arguments and return values. |
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172 // (Generic invokers are shared among form-families of method-type.) |
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173 __ movptr(Address(rcx_argslot, 0 * Interpreter::stackElementSize), rax_mtype); |
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174 // FIXME: assert that rdx_adapter is of the right method-type. |
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175 __ mov(rcx, rdx_adapter); |
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176 trace_method_handle(_masm, "invokeGeneric"); |
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177 __ jump_to_method_handle_entry(rcx, rdi_temp); |
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178 |
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179 __ bind(sorry_no_invoke_generic); // no invokeGeneric implementation available! |
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180 __ movptr(rcx_recv, Address(rcx_argslot, -1 * Interpreter::stackElementSize)); // recover original MH |
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181 __ push(rax_mtype); // required mtype |
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182 __ push(rcx_recv); // bad mh (1st stacked argument) |
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183 __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); |
| 710 | 184 |
| 185 return entry_point; | |
| 186 } | |
| 187 | |
| 188 // Helper to insert argument slots into the stack. | |
| 189 // arg_slots must be a multiple of stack_move_unit() and <= 0 | |
| 190 void MethodHandles::insert_arg_slots(MacroAssembler* _masm, | |
| 191 RegisterOrConstant arg_slots, | |
| 192 int arg_mask, | |
| 193 Register rax_argslot, | |
| 1503 | 194 Register rbx_temp, Register rdx_temp, Register temp3_reg) { |
| 195 assert(temp3_reg == noreg, "temp3 not required"); | |
| 710 | 196 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
| 197 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
| 198 | |
| 199 #ifdef ASSERT | |
| 200 verify_argslot(_masm, rax_argslot, "insertion point must fall within current frame"); | |
| 201 if (arg_slots.is_register()) { | |
| 202 Label L_ok, L_bad; | |
| 203 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); | |
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204 __ jccb(Assembler::greater, L_bad); |
| 710 | 205 __ testl(arg_slots.as_register(), -stack_move_unit() - 1); |
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206 __ jccb(Assembler::zero, L_ok); |
| 710 | 207 __ bind(L_bad); |
| 208 __ stop("assert arg_slots <= 0 and clear low bits"); | |
| 209 __ bind(L_ok); | |
| 210 } else { | |
| 211 assert(arg_slots.as_constant() <= 0, ""); | |
| 212 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
| 213 } | |
| 214 #endif //ASSERT | |
| 215 | |
| 216 #ifdef _LP64 | |
| 217 if (arg_slots.is_register()) { | |
| 218 // clean high bits of stack motion register (was loaded as an int) | |
| 219 __ movslq(arg_slots.as_register(), arg_slots.as_register()); | |
| 220 } | |
| 221 #endif | |
| 222 | |
| 223 // Make space on the stack for the inserted argument(s). | |
| 224 // Then pull down everything shallower than rax_argslot. | |
| 225 // The stacked return address gets pulled down with everything else. | |
| 226 // That is, copy [rsp, argslot) downward by -size words. In pseudo-code: | |
| 227 // rsp -= size; | |
| 228 // for (rdx = rsp + size; rdx < argslot; rdx++) | |
| 229 // rdx[-size] = rdx[0] | |
| 230 // argslot -= size; | |
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231 BLOCK_COMMENT("insert_arg_slots {"); |
| 710 | 232 __ mov(rdx_temp, rsp); // source pointer for copy |
| 233 __ lea(rsp, Address(rsp, arg_slots, Address::times_ptr)); | |
| 234 { | |
| 235 Label loop; | |
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236 __ BIND(loop); |
| 710 | 237 // pull one word down each time through the loop |
| 238 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
| 239 __ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp); | |
| 240 __ addptr(rdx_temp, wordSize); | |
| 241 __ cmpptr(rdx_temp, rax_argslot); | |
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242 __ jccb(Assembler::less, loop); |
| 710 | 243 } |
| 244 | |
| 245 // Now move the argslot down, to point to the opened-up space. | |
| 246 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
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247 BLOCK_COMMENT("} insert_arg_slots"); |
| 710 | 248 } |
| 249 | |
| 250 // Helper to remove argument slots from the stack. | |
| 251 // arg_slots must be a multiple of stack_move_unit() and >= 0 | |
| 252 void MethodHandles::remove_arg_slots(MacroAssembler* _masm, | |
| 253 RegisterOrConstant arg_slots, | |
| 254 Register rax_argslot, | |
| 1503 | 255 Register rbx_temp, Register rdx_temp, Register temp3_reg) { |
| 256 assert(temp3_reg == noreg, "temp3 not required"); | |
| 710 | 257 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
| 258 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
| 259 | |
| 260 #ifdef ASSERT | |
| 1304 | 261 // Verify that [argslot..argslot+size) lies within (rsp, rbp). |
| 262 __ lea(rbx_temp, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
| 263 verify_argslot(_masm, rbx_temp, "deleted argument(s) must fall within current frame"); | |
| 710 | 264 if (arg_slots.is_register()) { |
| 265 Label L_ok, L_bad; | |
| 266 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); | |
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267 __ jccb(Assembler::less, L_bad); |
| 710 | 268 __ testl(arg_slots.as_register(), -stack_move_unit() - 1); |
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269 __ jccb(Assembler::zero, L_ok); |
| 710 | 270 __ bind(L_bad); |
| 271 __ stop("assert arg_slots >= 0 and clear low bits"); | |
| 272 __ bind(L_ok); | |
| 273 } else { | |
| 274 assert(arg_slots.as_constant() >= 0, ""); | |
| 275 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
| 276 } | |
| 277 #endif //ASSERT | |
| 278 | |
| 279 #ifdef _LP64 | |
| 280 if (false) { // not needed, since register is positive | |
| 281 // clean high bits of stack motion register (was loaded as an int) | |
| 282 if (arg_slots.is_register()) | |
| 283 __ movslq(arg_slots.as_register(), arg_slots.as_register()); | |
| 284 } | |
| 285 #endif | |
| 286 | |
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287 BLOCK_COMMENT("remove_arg_slots {"); |
| 710 | 288 // Pull up everything shallower than rax_argslot. |
| 289 // Then remove the excess space on the stack. | |
| 290 // The stacked return address gets pulled up with everything else. | |
| 291 // That is, copy [rsp, argslot) upward by size words. In pseudo-code: | |
| 292 // for (rdx = argslot-1; rdx >= rsp; --rdx) | |
| 293 // rdx[size] = rdx[0] | |
| 294 // argslot += size; | |
| 295 // rsp += size; | |
| 296 __ lea(rdx_temp, Address(rax_argslot, -wordSize)); // source pointer for copy | |
| 297 { | |
| 298 Label loop; | |
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299 __ BIND(loop); |
| 710 | 300 // pull one word up each time through the loop |
| 301 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
| 302 __ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp); | |
| 303 __ addptr(rdx_temp, -wordSize); | |
| 304 __ cmpptr(rdx_temp, rsp); | |
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305 __ jccb(Assembler::greaterEqual, loop); |
| 710 | 306 } |
| 307 | |
| 308 // Now move the argslot up, to point to the just-copied block. | |
| 309 __ lea(rsp, Address(rsp, arg_slots, Address::times_ptr)); | |
| 310 // And adjust the argslot address to point at the deletion point. | |
| 311 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
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312 BLOCK_COMMENT("} remove_arg_slots"); |
| 710 | 313 } |
| 314 | |
| 315 #ifndef PRODUCT | |
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316 extern "C" void print_method_handle(oop mh); |
| 710 | 317 void trace_method_handle_stub(const char* adaptername, |
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318 oop mh, |
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319 intptr_t* saved_regs, |
| 710 | 320 intptr_t* entry_sp, |
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321 intptr_t* saved_sp, |
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322 intptr_t* saved_bp) { |
| 710 | 323 // called as a leaf from native code: do not block the JVM! |
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324 intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset]; |
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325 intptr_t* base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset]; |
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326 printf("MH %s mh="INTPTR_FORMAT" sp=("INTPTR_FORMAT"+"INTX_FORMAT") stack_size="INTX_FORMAT" bp="INTPTR_FORMAT"\n", |
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327 adaptername, (intptr_t)mh, (intptr_t)entry_sp, (intptr_t)(saved_sp - entry_sp), (intptr_t)(base_sp - last_sp), (intptr_t)saved_bp); |
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328 if (last_sp != saved_sp && last_sp != NULL) |
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329 printf("*** last_sp="INTPTR_FORMAT"\n", (intptr_t)last_sp); |
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330 if (Verbose) { |
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331 printf(" reg dump: "); |
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332 int saved_regs_count = (entry_sp-1) - saved_regs; |
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333 // 32 bit: rdi rsi rbp rsp; rbx rdx rcx (*) rax |
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334 int i; |
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335 for (i = 0; i <= saved_regs_count; i++) { |
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336 if (i > 0 && i % 4 == 0 && i != saved_regs_count) |
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337 printf("\n + dump: "); |
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338 printf(" %d: "INTPTR_FORMAT, i, saved_regs[i]); |
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339 } |
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340 printf("\n"); |
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341 int stack_dump_count = 16; |
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342 if (stack_dump_count < (int)(saved_bp + 2 - saved_sp)) |
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343 stack_dump_count = (int)(saved_bp + 2 - saved_sp); |
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344 if (stack_dump_count > 64) stack_dump_count = 48; |
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345 for (i = 0; i < stack_dump_count; i += 4) { |
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346 printf(" dump at SP[%d] "INTPTR_FORMAT": "INTPTR_FORMAT" "INTPTR_FORMAT" "INTPTR_FORMAT" "INTPTR_FORMAT"\n", |
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347 i, (intptr_t) &entry_sp[i+0], entry_sp[i+0], entry_sp[i+1], entry_sp[i+2], entry_sp[i+3]); |
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348 } |
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349 print_method_handle(mh); |
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350 } |
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351 } |
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352 void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) { |
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353 if (!TraceMethodHandles) return; |
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354 BLOCK_COMMENT("trace_method_handle {"); |
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355 __ push(rax); |
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356 __ lea(rax, Address(rsp, wordSize*6)); // entry_sp |
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357 __ pusha(); |
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358 // arguments: |
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359 __ push(rbp); // interpreter frame pointer |
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360 __ push(rsi); // saved_sp |
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361 __ push(rax); // entry_sp |
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362 __ push(rcx); // mh |
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363 __ push(rcx); |
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364 __ movptr(Address(rsp, 0), (intptr_t) adaptername); |
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365 __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub), 5); |
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366 __ popa(); |
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367 __ pop(rax); |
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368 BLOCK_COMMENT("} trace_method_handle"); |
| 710 | 369 } |
| 370 #endif //PRODUCT | |
| 371 | |
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372 // which conversion op types are implemented here? |
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373 int MethodHandles::adapter_conversion_ops_supported_mask() { |
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374 return ((1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_ONLY) |
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375 |(1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW) |
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376 |(1<<sun_dyn_AdapterMethodHandle::OP_CHECK_CAST) |
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377 |(1<<sun_dyn_AdapterMethodHandle::OP_PRIM_TO_PRIM) |
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378 |(1<<sun_dyn_AdapterMethodHandle::OP_REF_TO_PRIM) |
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379 |(1<<sun_dyn_AdapterMethodHandle::OP_SWAP_ARGS) |
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380 |(1<<sun_dyn_AdapterMethodHandle::OP_ROT_ARGS) |
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381 |(1<<sun_dyn_AdapterMethodHandle::OP_DUP_ARGS) |
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382 |(1<<sun_dyn_AdapterMethodHandle::OP_DROP_ARGS) |
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383 //|(1<<sun_dyn_AdapterMethodHandle::OP_SPREAD_ARGS) //BUG! |
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384 ); |
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385 // FIXME: MethodHandlesTest gets a crash if we enable OP_SPREAD_ARGS. |
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386 } |
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387 |
| 710 | 388 // Generate an "entry" field for a method handle. |
| 389 // This determines how the method handle will respond to calls. | |
| 390 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) { | |
| 391 // Here is the register state during an interpreted call, | |
| 392 // as set up by generate_method_handle_interpreter_entry(): | |
| 393 // - rbx: garbage temp (was MethodHandle.invoke methodOop, unused) | |
| 394 // - rcx: receiver method handle | |
| 395 // - rax: method handle type (only used by the check_mtype entry point) | |
| 396 // - rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
| 397 // - rdx: garbage temp, can blow away | |
| 398 | |
| 399 Register rcx_recv = rcx; | |
| 400 Register rax_argslot = rax; | |
| 401 Register rbx_temp = rbx; | |
| 402 Register rdx_temp = rdx; | |
| 403 | |
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404 // This guy is set up by prepare_to_jump_from_interpreted (from interpreted calls) |
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405 // and gen_c2i_adapter (from compiled calls): |
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406 Register saved_last_sp = LP64_ONLY(r13) NOT_LP64(rsi); |
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407 |
| 710 | 408 guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets"); |
| 409 | |
| 410 // some handy addresses | |
| 411 Address rbx_method_fie( rbx, methodOopDesc::from_interpreted_offset() ); | |
| 412 | |
| 413 Address rcx_mh_vmtarget( rcx_recv, java_dyn_MethodHandle::vmtarget_offset_in_bytes() ); | |
| 414 Address rcx_dmh_vmindex( rcx_recv, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes() ); | |
| 415 | |
| 416 Address rcx_bmh_vmargslot( rcx_recv, sun_dyn_BoundMethodHandle::vmargslot_offset_in_bytes() ); | |
| 417 Address rcx_bmh_argument( rcx_recv, sun_dyn_BoundMethodHandle::argument_offset_in_bytes() ); | |
| 418 | |
| 419 Address rcx_amh_vmargslot( rcx_recv, sun_dyn_AdapterMethodHandle::vmargslot_offset_in_bytes() ); | |
| 420 Address rcx_amh_argument( rcx_recv, sun_dyn_AdapterMethodHandle::argument_offset_in_bytes() ); | |
| 421 Address rcx_amh_conversion( rcx_recv, sun_dyn_AdapterMethodHandle::conversion_offset_in_bytes() ); | |
| 422 Address vmarg; // __ argument_address(vmargslot) | |
| 423 | |
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424 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); |
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425 |
| 710 | 426 if (have_entry(ek)) { |
| 427 __ nop(); // empty stubs make SG sick | |
| 428 return; | |
| 429 } | |
| 430 | |
| 431 address interp_entry = __ pc(); | |
| 432 | |
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433 trace_method_handle(_masm, entry_name(ek)); |
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434 |
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435 BLOCK_COMMENT(entry_name(ek)); |
| 710 | 436 |
| 437 switch ((int) ek) { | |
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438 case _raise_exception: |
| 710 | 439 { |
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440 // Not a real MH entry, but rather shared code for raising an exception. |
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441 // Extra local arguments are pushed on stack, as required type at TOS+8, |
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442 // failing object (or NULL) at TOS+4, failing bytecode type at TOS. |
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443 // Beyond those local arguments are the PC, of course. |
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444 Register rdx_code = rdx_temp; |
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445 Register rcx_fail = rcx_recv; |
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446 Register rax_want = rax_argslot; |
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447 Register rdi_pc = rdi; |
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448 __ pop(rdx_code); // TOS+0 |
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449 __ pop(rcx_fail); // TOS+4 |
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450 __ pop(rax_want); // TOS+8 |
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451 __ pop(rdi_pc); // caller PC |
| 710 | 452 |
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453 __ mov(rsp, rsi); // cut the stack back to where the caller started |
| 710 | 454 |
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455 // Repush the arguments as if coming from the interpreter. |
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456 __ push(rdx_code); |
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457 __ push(rcx_fail); |
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458 __ push(rax_want); |
| 710 | 459 |
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460 Register rbx_method = rbx_temp; |
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461 Label no_method; |
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462 // FIXME: fill in _raise_exception_method with a suitable sun.dyn method |
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463 __ movptr(rbx_method, ExternalAddress((address) &_raise_exception_method)); |
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464 __ testptr(rbx_method, rbx_method); |
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465 __ jccb(Assembler::zero, no_method); |
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466 int jobject_oop_offset = 0; |
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467 __ movptr(rbx_method, Address(rbx_method, jobject_oop_offset)); // dereference the jobject |
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468 __ testptr(rbx_method, rbx_method); |
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469 __ jccb(Assembler::zero, no_method); |
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470 __ verify_oop(rbx_method); |
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471 __ push(rdi_pc); // and restore caller PC |
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472 __ jmp(rbx_method_fie); |
| 710 | 473 |
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474 // If we get here, the Java runtime did not do its job of creating the exception. |
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475 // Do something that is at least causes a valid throw from the interpreter. |
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476 __ bind(no_method); |
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477 __ pop(rax_want); |
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478 __ pop(rcx_fail); |
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479 __ push(rax_want); |
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480 __ push(rcx_fail); |
| 710 | 481 __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); |
| 482 } | |
| 483 break; | |
| 484 | |
| 485 case _invokestatic_mh: | |
| 486 case _invokespecial_mh: | |
| 487 { | |
| 488 Register rbx_method = rbx_temp; | |
| 1846 | 489 __ load_heap_oop(rbx_method, rcx_mh_vmtarget); // target is a methodOop |
| 710 | 490 __ verify_oop(rbx_method); |
| 491 // same as TemplateTable::invokestatic or invokespecial, | |
| 492 // minus the CP setup and profiling: | |
| 493 if (ek == _invokespecial_mh) { | |
| 494 // Must load & check the first argument before entering the target method. | |
| 495 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
| 496 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
| 497 __ null_check(rcx_recv); | |
| 498 __ verify_oop(rcx_recv); | |
| 499 } | |
| 500 __ jmp(rbx_method_fie); | |
| 501 } | |
| 502 break; | |
| 503 | |
| 504 case _invokevirtual_mh: | |
| 505 { | |
| 506 // same as TemplateTable::invokevirtual, | |
| 507 // minus the CP setup and profiling: | |
| 508 | |
| 509 // pick out the vtable index and receiver offset from the MH, | |
| 510 // and then we can discard it: | |
| 511 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
| 512 Register rbx_index = rbx_temp; | |
| 513 __ movl(rbx_index, rcx_dmh_vmindex); | |
| 514 // Note: The verifier allows us to ignore rcx_mh_vmtarget. | |
| 515 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
| 516 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
| 517 | |
| 518 // get receiver klass | |
| 519 Register rax_klass = rax_argslot; | |
| 520 __ load_klass(rax_klass, rcx_recv); | |
| 521 __ verify_oop(rax_klass); | |
| 522 | |
| 523 // get target methodOop & entry point | |
| 524 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
| 525 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); | |
| 526 Address vtable_entry_addr(rax_klass, | |
| 527 rbx_index, Address::times_ptr, | |
| 528 base + vtableEntry::method_offset_in_bytes()); | |
| 529 Register rbx_method = rbx_temp; | |
| 1108 | 530 __ movptr(rbx_method, vtable_entry_addr); |
| 710 | 531 |
| 532 __ verify_oop(rbx_method); | |
| 533 __ jmp(rbx_method_fie); | |
| 534 } | |
| 535 break; | |
| 536 | |
| 537 case _invokeinterface_mh: | |
| 538 { | |
| 539 // same as TemplateTable::invokeinterface, | |
| 540 // minus the CP setup and profiling: | |
| 541 | |
| 542 // pick out the interface and itable index from the MH. | |
| 543 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
| 544 Register rdx_intf = rdx_temp; | |
| 545 Register rbx_index = rbx_temp; | |
| 1846 | 546 __ load_heap_oop(rdx_intf, rcx_mh_vmtarget); |
| 547 __ movl(rbx_index, rcx_dmh_vmindex); | |
| 710 | 548 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); |
| 549 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
| 550 | |
| 551 // get receiver klass | |
| 552 Register rax_klass = rax_argslot; | |
| 553 __ load_klass(rax_klass, rcx_recv); | |
| 554 __ verify_oop(rax_klass); | |
| 555 | |
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556 Register rdi_temp = rdi; |
| 710 | 557 Register rbx_method = rbx_index; |
| 558 | |
| 559 // get interface klass | |
| 560 Label no_such_interface; | |
| 561 __ verify_oop(rdx_intf); | |
| 562 __ lookup_interface_method(rax_klass, rdx_intf, | |
| 563 // note: next two args must be the same: | |
| 564 rbx_index, rbx_method, | |
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565 rdi_temp, |
| 710 | 566 no_such_interface); |
| 567 | |
| 568 __ verify_oop(rbx_method); | |
| 569 __ jmp(rbx_method_fie); | |
| 570 __ hlt(); | |
| 571 | |
| 572 __ bind(no_such_interface); | |
| 573 // Throw an exception. | |
| 574 // For historical reasons, it will be IncompatibleClassChangeError. | |
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575 __ pushptr(Address(rdx_intf, java_mirror_offset)); // required interface |
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576 __ push(rcx_recv); // bad receiver |
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577 __ push((int)Bytecodes::_invokeinterface); // who is complaining? |
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578 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
| 710 | 579 } |
| 580 break; | |
| 581 | |
| 582 case _bound_ref_mh: | |
| 583 case _bound_int_mh: | |
| 584 case _bound_long_mh: | |
| 585 case _bound_ref_direct_mh: | |
| 586 case _bound_int_direct_mh: | |
| 587 case _bound_long_direct_mh: | |
| 588 { | |
| 589 bool direct_to_method = (ek >= _bound_ref_direct_mh); | |
| 1304 | 590 BasicType arg_type = T_ILLEGAL; |
| 591 int arg_mask = _INSERT_NO_MASK; | |
| 592 int arg_slots = -1; | |
| 593 get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots); | |
| 710 | 594 |
| 595 // make room for the new argument: | |
| 596 __ movl(rax_argslot, rcx_bmh_vmargslot); | |
| 597 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 598 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, | |
| 599 rax_argslot, rbx_temp, rdx_temp); | |
| 600 | |
| 601 // store bound argument into the new stack slot: | |
| 1846 | 602 __ load_heap_oop(rbx_temp, rcx_bmh_argument); |
| 710 | 603 Address prim_value_addr(rbx_temp, java_lang_boxing_object::value_offset_in_bytes(arg_type)); |
| 604 if (arg_type == T_OBJECT) { | |
| 605 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
| 606 } else { | |
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607 __ load_sized_value(rdx_temp, prim_value_addr, |
| 710 | 608 type2aelembytes(arg_type), is_signed_subword_type(arg_type)); |
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609 __ movptr(Address(rax_argslot, 0), rdx_temp); |
| 710 | 610 #ifndef _LP64 |
| 611 if (arg_slots == 2) { | |
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612 __ movl(rdx_temp, prim_value_addr.plus_disp(wordSize)); |
| 1506 | 613 __ movl(Address(rax_argslot, Interpreter::stackElementSize), rdx_temp); |
| 710 | 614 } |
| 615 #endif //_LP64 | |
| 616 } | |
| 617 | |
| 618 if (direct_to_method) { | |
| 619 Register rbx_method = rbx_temp; | |
| 1846 | 620 __ load_heap_oop(rbx_method, rcx_mh_vmtarget); |
| 710 | 621 __ verify_oop(rbx_method); |
| 622 __ jmp(rbx_method_fie); | |
| 623 } else { | |
| 1846 | 624 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 625 __ verify_oop(rcx_recv); |
| 626 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 627 } | |
| 628 } | |
| 629 break; | |
| 630 | |
| 631 case _adapter_retype_only: | |
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632 case _adapter_retype_raw: |
| 710 | 633 // immediately jump to the next MH layer: |
| 1846 | 634 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 635 __ verify_oop(rcx_recv); |
| 636 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 637 // This is OK when all parameter types widen. | |
| 638 // It is also OK when a return type narrows. | |
| 639 break; | |
| 640 | |
| 641 case _adapter_check_cast: | |
| 642 { | |
| 643 // temps: | |
| 644 Register rbx_klass = rbx_temp; // interesting AMH data | |
| 645 | |
| 646 // check a reference argument before jumping to the next layer of MH: | |
| 647 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 648 vmarg = __ argument_address(rax_argslot); | |
| 649 | |
| 650 // What class are we casting to? | |
| 1846 | 651 __ load_heap_oop(rbx_klass, rcx_amh_argument); // this is a Class object! |
| 652 __ load_heap_oop(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes())); | |
| 710 | 653 |
| 654 Label done; | |
| 655 __ movptr(rdx_temp, vmarg); | |
| 1277 | 656 __ testptr(rdx_temp, rdx_temp); |
| 1846 | 657 __ jcc(Assembler::zero, done); // no cast if null |
| 710 | 658 __ load_klass(rdx_temp, rdx_temp); |
| 659 | |
| 660 // live at this point: | |
| 661 // - rbx_klass: klass required by the target method | |
| 662 // - rdx_temp: argument klass to test | |
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663 // - rcx_recv: adapter method handle |
| 710 | 664 __ check_klass_subtype(rdx_temp, rbx_klass, rax_argslot, done); |
| 665 | |
| 666 // If we get here, the type check failed! | |
| 667 // Call the wrong_method_type stub, passing the failing argument type in rax. | |
| 668 Register rax_mtype = rax_argslot; | |
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669 __ movl(rax_argslot, rcx_amh_vmargslot); // reload argslot field |
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670 __ movptr(rdx_temp, vmarg); |
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671 |
| 1846 | 672 __ load_heap_oop(rbx_klass, rcx_amh_argument); // required class |
| 673 __ push(rbx_klass); | |
| 674 __ push(rdx_temp); // bad object | |
| 675 __ push((int)Bytecodes::_checkcast); // who is complaining? | |
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676 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
| 710 | 677 |
| 678 __ bind(done); | |
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679 // get the new MH: |
| 1846 | 680 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 681 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
| 682 } | |
| 683 break; | |
| 684 | |
| 685 case _adapter_prim_to_prim: | |
| 686 case _adapter_ref_to_prim: | |
| 687 // handled completely by optimized cases | |
| 688 __ stop("init_AdapterMethodHandle should not issue this"); | |
| 689 break; | |
| 690 | |
| 691 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim | |
| 692 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim | |
| 693 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim | |
| 694 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim | |
| 695 { | |
| 696 // perform an in-place conversion to int or an int subword | |
| 697 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 698 vmarg = __ argument_address(rax_argslot); | |
| 699 | |
| 700 switch (ek) { | |
| 701 case _adapter_opt_i2i: | |
| 702 __ movl(rdx_temp, vmarg); | |
| 703 break; | |
| 704 case _adapter_opt_l2i: | |
| 705 { | |
| 706 // just delete the extra slot; on a little-endian machine we keep the first | |
| 707 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
| 708 remove_arg_slots(_masm, -stack_move_unit(), | |
| 709 rax_argslot, rbx_temp, rdx_temp); | |
| 1506 | 710 vmarg = Address(rax_argslot, -Interpreter::stackElementSize); |
| 710 | 711 __ movl(rdx_temp, vmarg); |
| 712 } | |
| 713 break; | |
| 714 case _adapter_opt_unboxi: | |
| 715 { | |
| 716 // Load the value up from the heap. | |
| 717 __ movptr(rdx_temp, vmarg); | |
| 718 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); | |
| 719 #ifdef ASSERT | |
| 720 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { | |
| 721 if (is_subword_type(BasicType(bt))) | |
| 722 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), ""); | |
| 723 } | |
| 724 #endif | |
| 725 __ null_check(rdx_temp, value_offset); | |
| 726 __ movl(rdx_temp, Address(rdx_temp, value_offset)); | |
| 727 // We load this as a word. Because we are little-endian, | |
| 728 // the low bits will be correct, but the high bits may need cleaning. | |
| 729 // The vminfo will guide us to clean those bits. | |
| 730 } | |
| 731 break; | |
| 732 default: | |
| 1304 | 733 ShouldNotReachHere(); |
| 710 | 734 } |
| 735 | |
| 1304 | 736 // Do the requested conversion and store the value. |
| 710 | 737 Register rbx_vminfo = rbx_temp; |
| 738 __ movl(rbx_vminfo, rcx_amh_conversion); | |
| 739 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
| 740 | |
| 741 // get the new MH: | |
| 1846 | 742 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 743 // (now we are done with the old MH) |
| 744 | |
| 745 // original 32-bit vmdata word must be of this form: | |
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746 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 | |
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747 __ xchgptr(rcx, rbx_vminfo); // free rcx for shifts |
| 710 | 748 __ shll(rdx_temp /*, rcx*/); |
| 749 Label zero_extend, done; | |
| 750 __ testl(rcx, CONV_VMINFO_SIGN_FLAG); | |
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751 __ jccb(Assembler::zero, zero_extend); |
| 710 | 752 |
| 753 // this path is taken for int->byte, int->short | |
| 754 __ sarl(rdx_temp /*, rcx*/); | |
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755 __ jmpb(done); |
| 710 | 756 |
| 757 __ bind(zero_extend); | |
| 758 // this is taken for int->char | |
| 759 __ shrl(rdx_temp /*, rcx*/); | |
| 760 | |
| 761 __ bind(done); | |
| 1304 | 762 __ movl(vmarg, rdx_temp); // Store the value. |
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763 __ xchgptr(rcx, rbx_vminfo); // restore rcx_recv |
| 710 | 764 |
| 765 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 766 } | |
| 767 break; | |
| 768 | |
| 769 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim | |
| 770 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim | |
| 771 { | |
| 772 // perform an in-place int-to-long or ref-to-long conversion | |
| 773 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 774 | |
| 775 // on a little-endian machine we keep the first slot and add another after | |
| 776 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
| 777 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, | |
| 778 rax_argslot, rbx_temp, rdx_temp); | |
| 1506 | 779 Address vmarg1(rax_argslot, -Interpreter::stackElementSize); |
| 780 Address vmarg2 = vmarg1.plus_disp(Interpreter::stackElementSize); | |
| 710 | 781 |
| 782 switch (ek) { | |
| 783 case _adapter_opt_i2l: | |
| 784 { | |
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785 #ifdef _LP64 |
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786 __ movslq(rdx_temp, vmarg1); // Load sign-extended |
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787 __ movq(vmarg1, rdx_temp); // Store into first slot |
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788 #else |
| 710 | 789 __ movl(rdx_temp, vmarg1); |
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790 __ sarl(rdx_temp, BitsPerInt - 1); // __ extend_sign() |
| 710 | 791 __ movl(vmarg2, rdx_temp); // store second word |
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792 #endif |
| 710 | 793 } |
| 794 break; | |
| 795 case _adapter_opt_unboxl: | |
| 796 { | |
| 797 // Load the value up from the heap. | |
| 798 __ movptr(rdx_temp, vmarg1); | |
| 799 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG); | |
| 800 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), ""); | |
| 801 __ null_check(rdx_temp, value_offset); | |
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802 #ifdef _LP64 |
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803 __ movq(rbx_temp, Address(rdx_temp, value_offset)); |
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804 __ movq(vmarg1, rbx_temp); |
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805 #else |
| 710 | 806 __ movl(rbx_temp, Address(rdx_temp, value_offset + 0*BytesPerInt)); |
| 807 __ movl(rdx_temp, Address(rdx_temp, value_offset + 1*BytesPerInt)); | |
| 808 __ movl(vmarg1, rbx_temp); | |
| 809 __ movl(vmarg2, rdx_temp); | |
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810 #endif |
| 710 | 811 } |
| 812 break; | |
| 813 default: | |
| 1304 | 814 ShouldNotReachHere(); |
| 710 | 815 } |
| 816 | |
| 1846 | 817 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 818 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
| 819 } | |
| 820 break; | |
| 821 | |
| 822 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim | |
| 823 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim | |
| 824 { | |
| 825 // perform an in-place floating primitive conversion | |
| 826 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 827 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
| 828 if (ek == _adapter_opt_f2d) { | |
| 829 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, | |
| 830 rax_argslot, rbx_temp, rdx_temp); | |
| 831 } | |
| 1506 | 832 Address vmarg(rax_argslot, -Interpreter::stackElementSize); |
| 710 | 833 |
| 834 #ifdef _LP64 | |
| 835 if (ek == _adapter_opt_f2d) { | |
| 836 __ movflt(xmm0, vmarg); | |
| 837 __ cvtss2sd(xmm0, xmm0); | |
| 838 __ movdbl(vmarg, xmm0); | |
| 839 } else { | |
| 840 __ movdbl(xmm0, vmarg); | |
| 841 __ cvtsd2ss(xmm0, xmm0); | |
| 842 __ movflt(vmarg, xmm0); | |
| 843 } | |
| 844 #else //_LP64 | |
| 845 if (ek == _adapter_opt_f2d) { | |
| 846 __ fld_s(vmarg); // load float to ST0 | |
| 847 __ fstp_s(vmarg); // store single | |
| 1304 | 848 } else { |
| 710 | 849 __ fld_d(vmarg); // load double to ST0 |
| 850 __ fstp_s(vmarg); // store single | |
| 851 } | |
| 852 #endif //_LP64 | |
| 853 | |
| 854 if (ek == _adapter_opt_d2f) { | |
| 855 remove_arg_slots(_masm, -stack_move_unit(), | |
| 856 rax_argslot, rbx_temp, rdx_temp); | |
| 857 } | |
| 858 | |
| 1846 | 859 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 860 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
| 861 } | |
| 862 break; | |
| 863 | |
| 864 case _adapter_prim_to_ref: | |
| 865 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 866 break; | |
| 867 | |
| 868 case _adapter_swap_args: | |
| 869 case _adapter_rot_args: | |
| 870 // handled completely by optimized cases | |
| 871 __ stop("init_AdapterMethodHandle should not issue this"); | |
| 872 break; | |
| 873 | |
| 874 case _adapter_opt_swap_1: | |
| 875 case _adapter_opt_swap_2: | |
| 876 case _adapter_opt_rot_1_up: | |
| 877 case _adapter_opt_rot_1_down: | |
| 878 case _adapter_opt_rot_2_up: | |
| 879 case _adapter_opt_rot_2_down: | |
| 880 { | |
| 1304 | 881 int swap_bytes = 0, rotate = 0; |
| 882 get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate); | |
| 710 | 883 |
| 884 // 'argslot' is the position of the first argument to swap | |
| 885 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 886 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 887 | |
| 888 // 'vminfo' is the second | |
| 889 Register rbx_destslot = rbx_temp; | |
| 890 __ movl(rbx_destslot, rcx_amh_conversion); | |
| 891 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
| 892 __ andl(rbx_destslot, CONV_VMINFO_MASK); | |
| 893 __ lea(rbx_destslot, __ argument_address(rbx_destslot)); | |
| 894 DEBUG_ONLY(verify_argslot(_masm, rbx_destslot, "swap point must fall within current frame")); | |
| 895 | |
| 896 if (!rotate) { | |
| 897 for (int i = 0; i < swap_bytes; i += wordSize) { | |
| 898 __ movptr(rdx_temp, Address(rax_argslot , i)); | |
| 899 __ push(rdx_temp); | |
| 900 __ movptr(rdx_temp, Address(rbx_destslot, i)); | |
| 901 __ movptr(Address(rax_argslot, i), rdx_temp); | |
| 902 __ pop(rdx_temp); | |
| 903 __ movptr(Address(rbx_destslot, i), rdx_temp); | |
| 904 } | |
| 905 } else { | |
| 906 // push the first chunk, which is going to get overwritten | |
| 907 for (int i = swap_bytes; (i -= wordSize) >= 0; ) { | |
| 908 __ movptr(rdx_temp, Address(rax_argslot, i)); | |
| 909 __ push(rdx_temp); | |
| 910 } | |
| 911 | |
| 912 if (rotate > 0) { | |
| 913 // rotate upward | |
| 914 __ subptr(rax_argslot, swap_bytes); | |
| 915 #ifdef ASSERT | |
| 916 { | |
| 917 // Verify that argslot > destslot, by at least swap_bytes. | |
| 918 Label L_ok; | |
| 919 __ cmpptr(rax_argslot, rbx_destslot); | |
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920 __ jccb(Assembler::aboveEqual, L_ok); |
| 710 | 921 __ stop("source must be above destination (upward rotation)"); |
| 922 __ bind(L_ok); | |
| 923 } | |
| 924 #endif | |
| 925 // work argslot down to destslot, copying contiguous data upwards | |
| 926 // pseudo-code: | |
| 927 // rax = src_addr - swap_bytes | |
| 928 // rbx = dest_addr | |
| 929 // while (rax >= rbx) *(rax + swap_bytes) = *(rax + 0), rax--; | |
| 930 Label loop; | |
| 931 __ bind(loop); | |
| 932 __ movptr(rdx_temp, Address(rax_argslot, 0)); | |
| 933 __ movptr(Address(rax_argslot, swap_bytes), rdx_temp); | |
| 934 __ addptr(rax_argslot, -wordSize); | |
| 935 __ cmpptr(rax_argslot, rbx_destslot); | |
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936 __ jccb(Assembler::aboveEqual, loop); |
| 710 | 937 } else { |
| 938 __ addptr(rax_argslot, swap_bytes); | |
| 939 #ifdef ASSERT | |
| 940 { | |
| 941 // Verify that argslot < destslot, by at least swap_bytes. | |
| 942 Label L_ok; | |
| 943 __ cmpptr(rax_argslot, rbx_destslot); | |
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944 __ jccb(Assembler::belowEqual, L_ok); |
| 710 | 945 __ stop("source must be below destination (downward rotation)"); |
| 946 __ bind(L_ok); | |
| 947 } | |
| 948 #endif | |
| 949 // work argslot up to destslot, copying contiguous data downwards | |
| 950 // pseudo-code: | |
| 951 // rax = src_addr + swap_bytes | |
| 952 // rbx = dest_addr | |
| 953 // while (rax <= rbx) *(rax - swap_bytes) = *(rax + 0), rax++; | |
| 954 Label loop; | |
| 955 __ bind(loop); | |
| 956 __ movptr(rdx_temp, Address(rax_argslot, 0)); | |
| 957 __ movptr(Address(rax_argslot, -swap_bytes), rdx_temp); | |
| 958 __ addptr(rax_argslot, wordSize); | |
| 959 __ cmpptr(rax_argslot, rbx_destslot); | |
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960 __ jccb(Assembler::belowEqual, loop); |
| 710 | 961 } |
| 962 | |
| 963 // pop the original first chunk into the destination slot, now free | |
| 964 for (int i = 0; i < swap_bytes; i += wordSize) { | |
| 965 __ pop(rdx_temp); | |
| 966 __ movptr(Address(rbx_destslot, i), rdx_temp); | |
| 967 } | |
| 968 } | |
| 969 | |
| 1846 | 970 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 971 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
| 972 } | |
| 973 break; | |
| 974 | |
| 975 case _adapter_dup_args: | |
| 976 { | |
| 977 // 'argslot' is the position of the first argument to duplicate | |
| 978 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 979 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 980 | |
| 981 // 'stack_move' is negative number of words to duplicate | |
| 982 Register rdx_stack_move = rdx_temp; | |
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983 __ movl2ptr(rdx_stack_move, rcx_amh_conversion); |
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984 __ sarptr(rdx_stack_move, CONV_STACK_MOVE_SHIFT); |
| 710 | 985 |
| 986 int argslot0_num = 0; | |
| 987 Address argslot0 = __ argument_address(RegisterOrConstant(argslot0_num)); | |
| 988 assert(argslot0.base() == rsp, ""); | |
| 989 int pre_arg_size = argslot0.disp(); | |
| 990 assert(pre_arg_size % wordSize == 0, ""); | |
| 991 assert(pre_arg_size > 0, "must include PC"); | |
| 992 | |
| 993 // remember the old rsp+1 (argslot[0]) | |
| 994 Register rbx_oldarg = rbx_temp; | |
| 995 __ lea(rbx_oldarg, argslot0); | |
| 996 | |
| 997 // move rsp down to make room for dups | |
| 998 __ lea(rsp, Address(rsp, rdx_stack_move, Address::times_ptr)); | |
| 999 | |
| 1000 // compute the new rsp+1 (argslot[0]) | |
| 1001 Register rdx_newarg = rdx_temp; | |
| 1002 __ lea(rdx_newarg, argslot0); | |
| 1003 | |
| 1004 __ push(rdi); // need a temp | |
| 1005 // (preceding push must be done after arg addresses are taken!) | |
| 1006 | |
| 1007 // pull down the pre_arg_size data (PC) | |
| 1008 for (int i = -pre_arg_size; i < 0; i += wordSize) { | |
| 1009 __ movptr(rdi, Address(rbx_oldarg, i)); | |
| 1010 __ movptr(Address(rdx_newarg, i), rdi); | |
| 1011 } | |
| 1012 | |
| 1013 // copy from rax_argslot[0...] down to new_rsp[1...] | |
| 1014 // pseudo-code: | |
| 1015 // rbx = old_rsp+1 | |
| 1016 // rdx = new_rsp+1 | |
| 1017 // rax = argslot | |
| 1018 // while (rdx < rbx) *rdx++ = *rax++ | |
| 1019 Label loop; | |
| 1020 __ bind(loop); | |
| 1021 __ movptr(rdi, Address(rax_argslot, 0)); | |
| 1022 __ movptr(Address(rdx_newarg, 0), rdi); | |
| 1023 __ addptr(rax_argslot, wordSize); | |
| 1024 __ addptr(rdx_newarg, wordSize); | |
| 1025 __ cmpptr(rdx_newarg, rbx_oldarg); | |
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1026 __ jccb(Assembler::less, loop); |
| 710 | 1027 |
| 1028 __ pop(rdi); // restore temp | |
| 1029 | |
| 1846 | 1030 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 1031 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
| 1032 } | |
| 1033 break; | |
| 1034 | |
| 1035 case _adapter_drop_args: | |
| 1036 { | |
| 1037 // 'argslot' is the position of the first argument to nuke | |
| 1038 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 1039 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 1040 | |
| 1041 __ push(rdi); // need a temp | |
| 1042 // (must do previous push after argslot address is taken) | |
| 1043 | |
| 1044 // 'stack_move' is number of words to drop | |
| 1045 Register rdi_stack_move = rdi; | |
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1046 __ movl2ptr(rdi_stack_move, rcx_amh_conversion); |
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1047 __ sarptr(rdi_stack_move, CONV_STACK_MOVE_SHIFT); |
| 710 | 1048 remove_arg_slots(_masm, rdi_stack_move, |
| 1049 rax_argslot, rbx_temp, rdx_temp); | |
| 1050 | |
| 1051 __ pop(rdi); // restore temp | |
| 1052 | |
| 1846 | 1053 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 1054 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
| 1055 } | |
| 1056 break; | |
| 1057 | |
| 1058 case _adapter_collect_args: | |
| 1059 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 1060 break; | |
| 1061 | |
| 1062 case _adapter_spread_args: | |
| 1063 // handled completely by optimized cases | |
| 1064 __ stop("init_AdapterMethodHandle should not issue this"); | |
| 1065 break; | |
| 1066 | |
| 1067 case _adapter_opt_spread_0: | |
| 1068 case _adapter_opt_spread_1: | |
| 1069 case _adapter_opt_spread_more: | |
| 1070 { | |
| 1071 // spread an array out into a group of arguments | |
| 1304 | 1072 int length_constant = get_ek_adapter_opt_spread_info(ek); |
| 710 | 1073 |
| 1074 // find the address of the array argument | |
| 1075 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 1076 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 1077 | |
| 1078 // grab some temps | |
| 1079 { __ push(rsi); __ push(rdi); } | |
| 1080 // (preceding pushes must be done after argslot address is taken!) | |
| 1081 #define UNPUSH_RSI_RDI \ | |
| 1082 { __ pop(rdi); __ pop(rsi); } | |
| 1083 | |
| 1084 // arx_argslot points both to the array and to the first output arg | |
| 1085 vmarg = Address(rax_argslot, 0); | |
| 1086 | |
| 1087 // Get the array value. | |
| 1088 Register rsi_array = rsi; | |
| 1089 Register rdx_array_klass = rdx_temp; | |
| 1090 BasicType elem_type = T_OBJECT; | |
| 1091 int length_offset = arrayOopDesc::length_offset_in_bytes(); | |
| 1092 int elem0_offset = arrayOopDesc::base_offset_in_bytes(elem_type); | |
| 1093 __ movptr(rsi_array, vmarg); | |
| 1094 Label skip_array_check; | |
| 1095 if (length_constant == 0) { | |
| 1096 __ testptr(rsi_array, rsi_array); | |
| 1097 __ jcc(Assembler::zero, skip_array_check); | |
| 1098 } | |
| 1099 __ null_check(rsi_array, oopDesc::klass_offset_in_bytes()); | |
| 1100 __ load_klass(rdx_array_klass, rsi_array); | |
| 1101 | |
| 1102 // Check the array type. | |
| 1103 Register rbx_klass = rbx_temp; | |
| 1846 | 1104 __ load_heap_oop(rbx_klass, rcx_amh_argument); // this is a Class object! |
| 1105 __ load_heap_oop(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes())); | |
| 710 | 1106 |
| 1107 Label ok_array_klass, bad_array_klass, bad_array_length; | |
| 1108 __ check_klass_subtype(rdx_array_klass, rbx_klass, rdi, ok_array_klass); | |
| 1109 // If we get here, the type check failed! | |
| 1110 __ jmp(bad_array_klass); | |
| 1111 __ bind(ok_array_klass); | |
| 1112 | |
| 1113 // Check length. | |
| 1114 if (length_constant >= 0) { | |
| 1115 __ cmpl(Address(rsi_array, length_offset), length_constant); | |
| 1116 } else { | |
| 1117 Register rbx_vminfo = rbx_temp; | |
| 1118 __ movl(rbx_vminfo, rcx_amh_conversion); | |
| 1119 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
| 1120 __ andl(rbx_vminfo, CONV_VMINFO_MASK); | |
| 1121 __ cmpl(rbx_vminfo, Address(rsi_array, length_offset)); | |
| 1122 } | |
| 1123 __ jcc(Assembler::notEqual, bad_array_length); | |
| 1124 | |
| 1125 Register rdx_argslot_limit = rdx_temp; | |
| 1126 | |
| 1127 // Array length checks out. Now insert any required stack slots. | |
| 1128 if (length_constant == -1) { | |
| 1129 // Form a pointer to the end of the affected region. | |
| 1506 | 1130 __ lea(rdx_argslot_limit, Address(rax_argslot, Interpreter::stackElementSize)); |
| 710 | 1131 // 'stack_move' is negative number of words to insert |
| 1132 Register rdi_stack_move = rdi; | |
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1133 __ movl2ptr(rdi_stack_move, rcx_amh_conversion); |
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1134 __ sarptr(rdi_stack_move, CONV_STACK_MOVE_SHIFT); |
| 710 | 1135 Register rsi_temp = rsi_array; // spill this |
| 1136 insert_arg_slots(_masm, rdi_stack_move, -1, | |
| 1137 rax_argslot, rbx_temp, rsi_temp); | |
| 1138 // reload the array (since rsi was killed) | |
| 1139 __ movptr(rsi_array, vmarg); | |
| 1140 } else if (length_constant > 1) { | |
| 1141 int arg_mask = 0; | |
| 1142 int new_slots = (length_constant - 1); | |
| 1143 for (int i = 0; i < new_slots; i++) { | |
| 1144 arg_mask <<= 1; | |
| 1145 arg_mask |= _INSERT_REF_MASK; | |
| 1146 } | |
| 1147 insert_arg_slots(_masm, new_slots * stack_move_unit(), arg_mask, | |
| 1148 rax_argslot, rbx_temp, rdx_temp); | |
| 1149 } else if (length_constant == 1) { | |
| 1150 // no stack resizing required | |
| 1151 } else if (length_constant == 0) { | |
| 1152 remove_arg_slots(_masm, -stack_move_unit(), | |
| 1153 rax_argslot, rbx_temp, rdx_temp); | |
| 1154 } | |
| 1155 | |
| 1156 // Copy from the array to the new slots. | |
| 1157 // Note: Stack change code preserves integrity of rax_argslot pointer. | |
| 1158 // So even after slot insertions, rax_argslot still points to first argument. | |
| 1159 if (length_constant == -1) { | |
| 1160 // [rax_argslot, rdx_argslot_limit) is the area we are inserting into. | |
| 1161 Register rsi_source = rsi_array; | |
| 1162 __ lea(rsi_source, Address(rsi_array, elem0_offset)); | |
| 1163 Label loop; | |
| 1164 __ bind(loop); | |
| 1165 __ movptr(rbx_temp, Address(rsi_source, 0)); | |
| 1166 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
| 1167 __ addptr(rsi_source, type2aelembytes(elem_type)); | |
| 1506 | 1168 __ addptr(rax_argslot, Interpreter::stackElementSize); |
| 710 | 1169 __ cmpptr(rax_argslot, rdx_argslot_limit); |
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1170 __ jccb(Assembler::less, loop); |
| 710 | 1171 } else if (length_constant == 0) { |
| 1172 __ bind(skip_array_check); | |
| 1173 // nothing to copy | |
| 1174 } else { | |
| 1175 int elem_offset = elem0_offset; | |
| 1176 int slot_offset = 0; | |
| 1177 for (int index = 0; index < length_constant; index++) { | |
| 1178 __ movptr(rbx_temp, Address(rsi_array, elem_offset)); | |
| 1179 __ movptr(Address(rax_argslot, slot_offset), rbx_temp); | |
| 1180 elem_offset += type2aelembytes(elem_type); | |
| 1506 | 1181 slot_offset += Interpreter::stackElementSize; |
| 710 | 1182 } |
| 1183 } | |
| 1184 | |
| 1185 // Arguments are spread. Move to next method handle. | |
| 1186 UNPUSH_RSI_RDI; | |
| 1846 | 1187 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 1188 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
| 1189 | |
| 1190 __ bind(bad_array_klass); | |
| 1191 UNPUSH_RSI_RDI; | |
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1192 __ pushptr(Address(rdx_array_klass, java_mirror_offset)); // required type |
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1193 __ pushptr(vmarg); // bad array |
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1194 __ push((int)Bytecodes::_aaload); // who is complaining? |
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1195 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
| 710 | 1196 |
| 1197 __ bind(bad_array_length); | |
| 1198 UNPUSH_RSI_RDI; | |
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1199 __ push(rcx_recv); // AMH requiring a certain length |
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1200 __ pushptr(vmarg); // bad array |
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1201 __ push((int)Bytecodes::_arraylength); // who is complaining? |
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1202 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
| 710 | 1203 |
| 1204 #undef UNPUSH_RSI_RDI | |
| 1205 } | |
| 1206 break; | |
| 1207 | |
| 1208 case _adapter_flyby: | |
| 1209 case _adapter_ricochet: | |
| 1210 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 1211 break; | |
| 1212 | |
| 1213 default: ShouldNotReachHere(); | |
| 1214 } | |
| 1215 __ hlt(); | |
| 1216 | |
| 1217 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry); | |
| 1218 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 1219 | |
| 1220 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie)); | |
| 1221 } |