Mercurial > hg > graal-compiler
annotate src/cpu/x86/vm/methodHandles_x86.cpp @ 1846:d55217dc206f
6829194: JSR 292 needs to support compressed oops
Reviewed-by: kvn, jrose
| author | twisti |
|---|---|
| date | Mon, 11 Oct 2010 04:18:58 -0700 |
| parents | c93c652551b5 |
| children | beba40b26a79 |
| 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 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_methodHandles_x86.cpp.incl" | |
| 27 | |
| 28 #define __ _masm-> | |
| 29 | |
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30 #ifdef PRODUCT |
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31 #define BLOCK_COMMENT(str) /* nothing */ |
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32 #else |
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33 #define BLOCK_COMMENT(str) __ block_comment(str) |
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34 #endif |
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35 |
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36 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") |
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37 |
| 710 | 38 address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm, |
| 39 address interpreted_entry) { | |
| 40 // Just before the actual machine code entry point, allocate space | |
| 41 // for a MethodHandleEntry::Data record, so that we can manage everything | |
| 42 // from one base pointer. | |
| 43 __ align(wordSize); | |
| 44 address target = __ pc() + sizeof(Data); | |
| 45 while (__ pc() < target) { | |
| 46 __ nop(); | |
| 47 __ align(wordSize); | |
| 48 } | |
| 49 | |
| 50 MethodHandleEntry* me = (MethodHandleEntry*) __ pc(); | |
| 51 me->set_end_address(__ pc()); // set a temporary end_address | |
| 52 me->set_from_interpreted_entry(interpreted_entry); | |
| 53 me->set_type_checking_entry(NULL); | |
| 54 | |
| 55 return (address) me; | |
| 56 } | |
| 57 | |
| 58 MethodHandleEntry* MethodHandleEntry::finish_compiled_entry(MacroAssembler* _masm, | |
| 59 address start_addr) { | |
| 60 MethodHandleEntry* me = (MethodHandleEntry*) start_addr; | |
| 61 assert(me->end_address() == start_addr, "valid ME"); | |
| 62 | |
| 63 // Fill in the real end_address: | |
| 64 __ align(wordSize); | |
| 65 me->set_end_address(__ pc()); | |
| 66 | |
| 67 return me; | |
| 68 } | |
| 69 | |
| 70 #ifdef ASSERT | |
| 1304 | 71 static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, |
| 710 | 72 const char* error_message) { |
| 73 // Verify that argslot lies within (rsp, rbp]. | |
| 74 Label L_ok, L_bad; | |
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75 BLOCK_COMMENT("{ verify_argslot"); |
| 1304 | 76 __ cmpptr(argslot_reg, rbp); |
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77 __ jccb(Assembler::above, L_bad); |
| 1304 | 78 __ cmpptr(rsp, argslot_reg); |
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79 __ jccb(Assembler::below, L_ok); |
| 710 | 80 __ bind(L_bad); |
| 81 __ stop(error_message); | |
| 82 __ bind(L_ok); | |
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83 BLOCK_COMMENT("} verify_argslot"); |
| 710 | 84 } |
| 85 #endif | |
| 86 | |
| 87 | |
| 88 // Code generation | |
| 89 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) { | |
| 90 // rbx: methodOop | |
| 91 // rcx: receiver method handle (must load from sp[MethodTypeForm.vmslots]) | |
| 92 // rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
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93 // rdx, rdi: garbage temp, blown away |
| 710 | 94 |
| 95 Register rbx_method = rbx; | |
| 96 Register rcx_recv = rcx; | |
| 97 Register rax_mtype = rax; | |
| 98 Register rdx_temp = rdx; | |
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99 Register rdi_temp = rdi; |
| 710 | 100 |
| 101 // emit WrongMethodType path first, to enable jccb back-branch from main path | |
| 102 Label wrong_method_type; | |
| 103 __ bind(wrong_method_type); | |
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104 Label invoke_generic_slow_path; |
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105 assert(methodOopDesc::intrinsic_id_size_in_bytes() == sizeof(u1), "");; |
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106 __ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) vmIntrinsics::_invokeExact); |
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107 __ jcc(Assembler::notEqual, invoke_generic_slow_path); |
| 710 | 108 __ push(rax_mtype); // required mtype |
| 109 __ push(rcx_recv); // bad mh (1st stacked argument) | |
| 110 __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); | |
| 111 | |
| 112 // here's where control starts out: | |
| 113 __ align(CodeEntryAlignment); | |
| 114 address entry_point = __ pc(); | |
| 115 | |
| 116 // fetch the MethodType from the method handle into rax (the 'check' register) | |
| 117 { | |
| 118 Register tem = rbx_method; | |
| 119 for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) { | |
| 120 __ movptr(rax_mtype, Address(tem, *pchase)); | |
| 121 tem = rax_mtype; // in case there is another indirection | |
| 122 } | |
| 123 } | |
| 124 | |
| 125 // given the MethodType, find out where the MH argument is buried | |
| 1846 | 126 __ load_heap_oop(rdx_temp, Address(rax_mtype, __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, rdi_temp))); |
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127 Register rdx_vmslots = rdx_temp; |
| 1846 | 128 __ movl(rdx_vmslots, Address(rdx_temp, __ delayed_value(java_dyn_MethodTypeForm::vmslots_offset_in_bytes, rdi_temp))); |
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129 __ movptr(rcx_recv, __ argument_address(rdx_vmslots)); |
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130 |
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131 trace_method_handle(_masm, "invokeExact"); |
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132 |
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133 __ check_method_handle_type(rax_mtype, rcx_recv, rdi_temp, wrong_method_type); |
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134 __ jump_to_method_handle_entry(rcx_recv, rdi_temp); |
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135 |
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136 // for invokeGeneric (only), apply argument and result conversions on the fly |
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137 __ bind(invoke_generic_slow_path); |
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138 #ifdef ASSERT |
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139 { Label L; |
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140 __ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) vmIntrinsics::_invokeGeneric); |
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141 __ jcc(Assembler::equal, L); |
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142 __ stop("bad methodOop::intrinsic_id"); |
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143 __ bind(L); |
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144 } |
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145 #endif //ASSERT |
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146 Register rbx_temp = rbx_method; // don't need it now |
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147 |
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148 // make room on the stack for another pointer: |
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149 Register rcx_argslot = rcx_recv; |
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150 __ lea(rcx_argslot, __ argument_address(rdx_vmslots, 1)); |
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151 insert_arg_slots(_masm, 2 * stack_move_unit(), _INSERT_REF_MASK, |
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152 rcx_argslot, rbx_temp, rdx_temp); |
| 710 | 153 |
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154 // load up an adapter from the calling type (Java weaves this) |
| 1846 | 155 __ load_heap_oop(rdx_temp, Address(rax_mtype, __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, rdi_temp))); |
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156 Register rdx_adapter = rdx_temp; |
| 1846 | 157 // __ load_heap_oop(rdx_adapter, Address(rdx_temp, java_dyn_MethodTypeForm::genericInvoker_offset_in_bytes())); |
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158 // deal with old JDK versions: |
| 1846 | 159 __ lea(rdi_temp, Address(rdx_temp, __ delayed_value(java_dyn_MethodTypeForm::genericInvoker_offset_in_bytes, rdi_temp))); |
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160 __ cmpptr(rdi_temp, rdx_temp); |
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161 Label sorry_no_invoke_generic; |
| 1846 | 162 __ jcc(Assembler::below, sorry_no_invoke_generic); |
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163 |
| 1846 | 164 __ load_heap_oop(rdx_adapter, Address(rdi_temp, 0)); |
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165 __ testptr(rdx_adapter, rdx_adapter); |
| 1846 | 166 __ jcc(Assembler::zero, sorry_no_invoke_generic); |
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167 __ movptr(Address(rcx_argslot, 1 * Interpreter::stackElementSize), rdx_adapter); |
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168 // As a trusted first argument, pass the type being called, so the adapter knows |
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169 // the actual types of the arguments and return values. |
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170 // (Generic invokers are shared among form-families of method-type.) |
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171 __ movptr(Address(rcx_argslot, 0 * Interpreter::stackElementSize), rax_mtype); |
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172 // FIXME: assert that rdx_adapter is of the right method-type. |
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173 __ mov(rcx, rdx_adapter); |
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174 trace_method_handle(_masm, "invokeGeneric"); |
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175 __ jump_to_method_handle_entry(rcx, rdi_temp); |
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176 |
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177 __ bind(sorry_no_invoke_generic); // no invokeGeneric implementation available! |
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178 __ movptr(rcx_recv, Address(rcx_argslot, -1 * Interpreter::stackElementSize)); // recover original MH |
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179 __ push(rax_mtype); // required mtype |
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180 __ push(rcx_recv); // bad mh (1st stacked argument) |
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181 __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); |
| 710 | 182 |
| 183 return entry_point; | |
| 184 } | |
| 185 | |
| 186 // Helper to insert argument slots into the stack. | |
| 187 // arg_slots must be a multiple of stack_move_unit() and <= 0 | |
| 188 void MethodHandles::insert_arg_slots(MacroAssembler* _masm, | |
| 189 RegisterOrConstant arg_slots, | |
| 190 int arg_mask, | |
| 191 Register rax_argslot, | |
| 1503 | 192 Register rbx_temp, Register rdx_temp, Register temp3_reg) { |
| 193 assert(temp3_reg == noreg, "temp3 not required"); | |
| 710 | 194 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
| 195 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
| 196 | |
| 197 #ifdef ASSERT | |
| 198 verify_argslot(_masm, rax_argslot, "insertion point must fall within current frame"); | |
| 199 if (arg_slots.is_register()) { | |
| 200 Label L_ok, L_bad; | |
| 201 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); | |
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202 __ jccb(Assembler::greater, L_bad); |
| 710 | 203 __ testl(arg_slots.as_register(), -stack_move_unit() - 1); |
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204 __ jccb(Assembler::zero, L_ok); |
| 710 | 205 __ bind(L_bad); |
| 206 __ stop("assert arg_slots <= 0 and clear low bits"); | |
| 207 __ bind(L_ok); | |
| 208 } else { | |
| 209 assert(arg_slots.as_constant() <= 0, ""); | |
| 210 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
| 211 } | |
| 212 #endif //ASSERT | |
| 213 | |
| 214 #ifdef _LP64 | |
| 215 if (arg_slots.is_register()) { | |
| 216 // clean high bits of stack motion register (was loaded as an int) | |
| 217 __ movslq(arg_slots.as_register(), arg_slots.as_register()); | |
| 218 } | |
| 219 #endif | |
| 220 | |
| 221 // Make space on the stack for the inserted argument(s). | |
| 222 // Then pull down everything shallower than rax_argslot. | |
| 223 // The stacked return address gets pulled down with everything else. | |
| 224 // That is, copy [rsp, argslot) downward by -size words. In pseudo-code: | |
| 225 // rsp -= size; | |
| 226 // for (rdx = rsp + size; rdx < argslot; rdx++) | |
| 227 // rdx[-size] = rdx[0] | |
| 228 // argslot -= size; | |
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229 BLOCK_COMMENT("insert_arg_slots {"); |
| 710 | 230 __ mov(rdx_temp, rsp); // source pointer for copy |
| 231 __ lea(rsp, Address(rsp, arg_slots, Address::times_ptr)); | |
| 232 { | |
| 233 Label loop; | |
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234 __ BIND(loop); |
| 710 | 235 // pull one word down each time through the loop |
| 236 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
| 237 __ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp); | |
| 238 __ addptr(rdx_temp, wordSize); | |
| 239 __ cmpptr(rdx_temp, rax_argslot); | |
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240 __ jccb(Assembler::less, loop); |
| 710 | 241 } |
| 242 | |
| 243 // Now move the argslot down, to point to the opened-up space. | |
| 244 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
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245 BLOCK_COMMENT("} insert_arg_slots"); |
| 710 | 246 } |
| 247 | |
| 248 // Helper to remove argument slots from the stack. | |
| 249 // arg_slots must be a multiple of stack_move_unit() and >= 0 | |
| 250 void MethodHandles::remove_arg_slots(MacroAssembler* _masm, | |
| 251 RegisterOrConstant arg_slots, | |
| 252 Register rax_argslot, | |
| 1503 | 253 Register rbx_temp, Register rdx_temp, Register temp3_reg) { |
| 254 assert(temp3_reg == noreg, "temp3 not required"); | |
| 710 | 255 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
| 256 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
| 257 | |
| 258 #ifdef ASSERT | |
| 1304 | 259 // Verify that [argslot..argslot+size) lies within (rsp, rbp). |
| 260 __ lea(rbx_temp, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
| 261 verify_argslot(_masm, rbx_temp, "deleted argument(s) must fall within current frame"); | |
| 710 | 262 if (arg_slots.is_register()) { |
| 263 Label L_ok, L_bad; | |
| 264 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); | |
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265 __ jccb(Assembler::less, L_bad); |
| 710 | 266 __ testl(arg_slots.as_register(), -stack_move_unit() - 1); |
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267 __ jccb(Assembler::zero, L_ok); |
| 710 | 268 __ bind(L_bad); |
| 269 __ stop("assert arg_slots >= 0 and clear low bits"); | |
| 270 __ bind(L_ok); | |
| 271 } else { | |
| 272 assert(arg_slots.as_constant() >= 0, ""); | |
| 273 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
| 274 } | |
| 275 #endif //ASSERT | |
| 276 | |
| 277 #ifdef _LP64 | |
| 278 if (false) { // not needed, since register is positive | |
| 279 // clean high bits of stack motion register (was loaded as an int) | |
| 280 if (arg_slots.is_register()) | |
| 281 __ movslq(arg_slots.as_register(), arg_slots.as_register()); | |
| 282 } | |
| 283 #endif | |
| 284 | |
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285 BLOCK_COMMENT("remove_arg_slots {"); |
| 710 | 286 // Pull up everything shallower than rax_argslot. |
| 287 // Then remove the excess space on the stack. | |
| 288 // The stacked return address gets pulled up with everything else. | |
| 289 // That is, copy [rsp, argslot) upward by size words. In pseudo-code: | |
| 290 // for (rdx = argslot-1; rdx >= rsp; --rdx) | |
| 291 // rdx[size] = rdx[0] | |
| 292 // argslot += size; | |
| 293 // rsp += size; | |
| 294 __ lea(rdx_temp, Address(rax_argslot, -wordSize)); // source pointer for copy | |
| 295 { | |
| 296 Label loop; | |
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297 __ BIND(loop); |
| 710 | 298 // pull one word up each time through the loop |
| 299 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
| 300 __ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp); | |
| 301 __ addptr(rdx_temp, -wordSize); | |
| 302 __ cmpptr(rdx_temp, rsp); | |
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303 __ jccb(Assembler::greaterEqual, loop); |
| 710 | 304 } |
| 305 | |
| 306 // Now move the argslot up, to point to the just-copied block. | |
| 307 __ lea(rsp, Address(rsp, arg_slots, Address::times_ptr)); | |
| 308 // And adjust the argslot address to point at the deletion point. | |
| 309 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
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310 BLOCK_COMMENT("} remove_arg_slots"); |
| 710 | 311 } |
| 312 | |
| 313 #ifndef PRODUCT | |
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314 extern "C" void print_method_handle(oop mh); |
| 710 | 315 void trace_method_handle_stub(const char* adaptername, |
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316 oop mh, |
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317 intptr_t* saved_regs, |
| 710 | 318 intptr_t* entry_sp, |
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319 intptr_t* saved_sp, |
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320 intptr_t* saved_bp) { |
| 710 | 321 // called as a leaf from native code: do not block the JVM! |
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322 intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset]; |
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323 intptr_t* base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset]; |
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324 printf("MH %s mh="INTPTR_FORMAT" sp=("INTPTR_FORMAT"+"INTX_FORMAT") stack_size="INTX_FORMAT" bp="INTPTR_FORMAT"\n", |
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325 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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326 if (last_sp != saved_sp && last_sp != NULL) |
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327 printf("*** last_sp="INTPTR_FORMAT"\n", (intptr_t)last_sp); |
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328 if (Verbose) { |
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329 printf(" reg dump: "); |
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330 int saved_regs_count = (entry_sp-1) - saved_regs; |
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331 // 32 bit: rdi rsi rbp rsp; rbx rdx rcx (*) rax |
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332 int i; |
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333 for (i = 0; i <= saved_regs_count; i++) { |
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334 if (i > 0 && i % 4 == 0 && i != saved_regs_count) |
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335 printf("\n + dump: "); |
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336 printf(" %d: "INTPTR_FORMAT, i, saved_regs[i]); |
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337 } |
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338 printf("\n"); |
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339 int stack_dump_count = 16; |
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340 if (stack_dump_count < (int)(saved_bp + 2 - saved_sp)) |
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341 stack_dump_count = (int)(saved_bp + 2 - saved_sp); |
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342 if (stack_dump_count > 64) stack_dump_count = 48; |
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343 for (i = 0; i < stack_dump_count; i += 4) { |
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344 printf(" dump at SP[%d] "INTPTR_FORMAT": "INTPTR_FORMAT" "INTPTR_FORMAT" "INTPTR_FORMAT" "INTPTR_FORMAT"\n", |
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345 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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346 } |
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347 print_method_handle(mh); |
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348 } |
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349 } |
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350 void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) { |
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351 if (!TraceMethodHandles) return; |
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352 BLOCK_COMMENT("trace_method_handle {"); |
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353 __ push(rax); |
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354 __ lea(rax, Address(rsp, wordSize*6)); // entry_sp |
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355 __ pusha(); |
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356 // arguments: |
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357 __ push(rbp); // interpreter frame pointer |
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358 __ push(rsi); // saved_sp |
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359 __ push(rax); // entry_sp |
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360 __ push(rcx); // mh |
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361 __ push(rcx); |
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362 __ movptr(Address(rsp, 0), (intptr_t) adaptername); |
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363 __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub), 5); |
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364 __ popa(); |
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365 __ pop(rax); |
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366 BLOCK_COMMENT("} trace_method_handle"); |
| 710 | 367 } |
| 368 #endif //PRODUCT | |
| 369 | |
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370 // which conversion op types are implemented here? |
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371 int MethodHandles::adapter_conversion_ops_supported_mask() { |
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372 return ((1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_ONLY) |
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373 |(1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW) |
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374 |(1<<sun_dyn_AdapterMethodHandle::OP_CHECK_CAST) |
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375 |(1<<sun_dyn_AdapterMethodHandle::OP_PRIM_TO_PRIM) |
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376 |(1<<sun_dyn_AdapterMethodHandle::OP_REF_TO_PRIM) |
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377 |(1<<sun_dyn_AdapterMethodHandle::OP_SWAP_ARGS) |
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378 |(1<<sun_dyn_AdapterMethodHandle::OP_ROT_ARGS) |
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379 |(1<<sun_dyn_AdapterMethodHandle::OP_DUP_ARGS) |
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380 |(1<<sun_dyn_AdapterMethodHandle::OP_DROP_ARGS) |
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381 //|(1<<sun_dyn_AdapterMethodHandle::OP_SPREAD_ARGS) //BUG! |
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382 ); |
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383 // FIXME: MethodHandlesTest gets a crash if we enable OP_SPREAD_ARGS. |
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384 } |
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385 |
| 710 | 386 // Generate an "entry" field for a method handle. |
| 387 // This determines how the method handle will respond to calls. | |
| 388 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) { | |
| 389 // Here is the register state during an interpreted call, | |
| 390 // as set up by generate_method_handle_interpreter_entry(): | |
| 391 // - rbx: garbage temp (was MethodHandle.invoke methodOop, unused) | |
| 392 // - rcx: receiver method handle | |
| 393 // - rax: method handle type (only used by the check_mtype entry point) | |
| 394 // - rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
| 395 // - rdx: garbage temp, can blow away | |
| 396 | |
| 397 Register rcx_recv = rcx; | |
| 398 Register rax_argslot = rax; | |
| 399 Register rbx_temp = rbx; | |
| 400 Register rdx_temp = rdx; | |
| 401 | |
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402 // This guy is set up by prepare_to_jump_from_interpreted (from interpreted calls) |
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403 // and gen_c2i_adapter (from compiled calls): |
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404 Register saved_last_sp = LP64_ONLY(r13) NOT_LP64(rsi); |
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405 |
| 710 | 406 guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets"); |
| 407 | |
| 408 // some handy addresses | |
| 409 Address rbx_method_fie( rbx, methodOopDesc::from_interpreted_offset() ); | |
| 410 | |
| 411 Address rcx_mh_vmtarget( rcx_recv, java_dyn_MethodHandle::vmtarget_offset_in_bytes() ); | |
| 412 Address rcx_dmh_vmindex( rcx_recv, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes() ); | |
| 413 | |
| 414 Address rcx_bmh_vmargslot( rcx_recv, sun_dyn_BoundMethodHandle::vmargslot_offset_in_bytes() ); | |
| 415 Address rcx_bmh_argument( rcx_recv, sun_dyn_BoundMethodHandle::argument_offset_in_bytes() ); | |
| 416 | |
| 417 Address rcx_amh_vmargslot( rcx_recv, sun_dyn_AdapterMethodHandle::vmargslot_offset_in_bytes() ); | |
| 418 Address rcx_amh_argument( rcx_recv, sun_dyn_AdapterMethodHandle::argument_offset_in_bytes() ); | |
| 419 Address rcx_amh_conversion( rcx_recv, sun_dyn_AdapterMethodHandle::conversion_offset_in_bytes() ); | |
| 420 Address vmarg; // __ argument_address(vmargslot) | |
| 421 | |
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422 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); |
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423 |
| 710 | 424 if (have_entry(ek)) { |
| 425 __ nop(); // empty stubs make SG sick | |
| 426 return; | |
| 427 } | |
| 428 | |
| 429 address interp_entry = __ pc(); | |
| 430 | |
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431 trace_method_handle(_masm, entry_name(ek)); |
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432 |
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433 BLOCK_COMMENT(entry_name(ek)); |
| 710 | 434 |
| 435 switch ((int) ek) { | |
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436 case _raise_exception: |
| 710 | 437 { |
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438 // Not a real MH entry, but rather shared code for raising an exception. |
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439 // Extra local arguments are pushed on stack, as required type at TOS+8, |
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440 // failing object (or NULL) at TOS+4, failing bytecode type at TOS. |
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441 // Beyond those local arguments are the PC, of course. |
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442 Register rdx_code = rdx_temp; |
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443 Register rcx_fail = rcx_recv; |
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444 Register rax_want = rax_argslot; |
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445 Register rdi_pc = rdi; |
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446 __ pop(rdx_code); // TOS+0 |
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447 __ pop(rcx_fail); // TOS+4 |
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448 __ pop(rax_want); // TOS+8 |
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449 __ pop(rdi_pc); // caller PC |
| 710 | 450 |
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451 __ mov(rsp, rsi); // cut the stack back to where the caller started |
| 710 | 452 |
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453 // Repush the arguments as if coming from the interpreter. |
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454 __ push(rdx_code); |
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455 __ push(rcx_fail); |
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456 __ push(rax_want); |
| 710 | 457 |
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458 Register rbx_method = rbx_temp; |
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459 Label no_method; |
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460 // FIXME: fill in _raise_exception_method with a suitable sun.dyn method |
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461 __ movptr(rbx_method, ExternalAddress((address) &_raise_exception_method)); |
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462 __ testptr(rbx_method, rbx_method); |
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463 __ jccb(Assembler::zero, no_method); |
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464 int jobject_oop_offset = 0; |
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465 __ movptr(rbx_method, Address(rbx_method, jobject_oop_offset)); // dereference the jobject |
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466 __ testptr(rbx_method, rbx_method); |
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467 __ jccb(Assembler::zero, no_method); |
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468 __ verify_oop(rbx_method); |
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469 __ push(rdi_pc); // and restore caller PC |
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470 __ jmp(rbx_method_fie); |
| 710 | 471 |
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472 // If we get here, the Java runtime did not do its job of creating the exception. |
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473 // Do something that is at least causes a valid throw from the interpreter. |
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474 __ bind(no_method); |
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475 __ pop(rax_want); |
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476 __ pop(rcx_fail); |
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477 __ push(rax_want); |
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478 __ push(rcx_fail); |
| 710 | 479 __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); |
| 480 } | |
| 481 break; | |
| 482 | |
| 483 case _invokestatic_mh: | |
| 484 case _invokespecial_mh: | |
| 485 { | |
| 486 Register rbx_method = rbx_temp; | |
| 1846 | 487 __ load_heap_oop(rbx_method, rcx_mh_vmtarget); // target is a methodOop |
| 710 | 488 __ verify_oop(rbx_method); |
| 489 // same as TemplateTable::invokestatic or invokespecial, | |
| 490 // minus the CP setup and profiling: | |
| 491 if (ek == _invokespecial_mh) { | |
| 492 // Must load & check the first argument before entering the target method. | |
| 493 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
| 494 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
| 495 __ null_check(rcx_recv); | |
| 496 __ verify_oop(rcx_recv); | |
| 497 } | |
| 498 __ jmp(rbx_method_fie); | |
| 499 } | |
| 500 break; | |
| 501 | |
| 502 case _invokevirtual_mh: | |
| 503 { | |
| 504 // same as TemplateTable::invokevirtual, | |
| 505 // minus the CP setup and profiling: | |
| 506 | |
| 507 // pick out the vtable index and receiver offset from the MH, | |
| 508 // and then we can discard it: | |
| 509 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
| 510 Register rbx_index = rbx_temp; | |
| 511 __ movl(rbx_index, rcx_dmh_vmindex); | |
| 512 // Note: The verifier allows us to ignore rcx_mh_vmtarget. | |
| 513 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
| 514 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
| 515 | |
| 516 // get receiver klass | |
| 517 Register rax_klass = rax_argslot; | |
| 518 __ load_klass(rax_klass, rcx_recv); | |
| 519 __ verify_oop(rax_klass); | |
| 520 | |
| 521 // get target methodOop & entry point | |
| 522 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
| 523 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); | |
| 524 Address vtable_entry_addr(rax_klass, | |
| 525 rbx_index, Address::times_ptr, | |
| 526 base + vtableEntry::method_offset_in_bytes()); | |
| 527 Register rbx_method = rbx_temp; | |
| 1108 | 528 __ movptr(rbx_method, vtable_entry_addr); |
| 710 | 529 |
| 530 __ verify_oop(rbx_method); | |
| 531 __ jmp(rbx_method_fie); | |
| 532 } | |
| 533 break; | |
| 534 | |
| 535 case _invokeinterface_mh: | |
| 536 { | |
| 537 // same as TemplateTable::invokeinterface, | |
| 538 // minus the CP setup and profiling: | |
| 539 | |
| 540 // pick out the interface and itable index from the MH. | |
| 541 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
| 542 Register rdx_intf = rdx_temp; | |
| 543 Register rbx_index = rbx_temp; | |
| 1846 | 544 __ load_heap_oop(rdx_intf, rcx_mh_vmtarget); |
| 545 __ movl(rbx_index, rcx_dmh_vmindex); | |
| 710 | 546 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); |
| 547 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
| 548 | |
| 549 // get receiver klass | |
| 550 Register rax_klass = rax_argslot; | |
| 551 __ load_klass(rax_klass, rcx_recv); | |
| 552 __ verify_oop(rax_klass); | |
| 553 | |
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554 Register rdi_temp = rdi; |
| 710 | 555 Register rbx_method = rbx_index; |
| 556 | |
| 557 // get interface klass | |
| 558 Label no_such_interface; | |
| 559 __ verify_oop(rdx_intf); | |
| 560 __ lookup_interface_method(rax_klass, rdx_intf, | |
| 561 // note: next two args must be the same: | |
| 562 rbx_index, rbx_method, | |
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563 rdi_temp, |
| 710 | 564 no_such_interface); |
| 565 | |
| 566 __ verify_oop(rbx_method); | |
| 567 __ jmp(rbx_method_fie); | |
| 568 __ hlt(); | |
| 569 | |
| 570 __ bind(no_such_interface); | |
| 571 // Throw an exception. | |
| 572 // For historical reasons, it will be IncompatibleClassChangeError. | |
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573 __ pushptr(Address(rdx_intf, java_mirror_offset)); // required interface |
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574 __ push(rcx_recv); // bad receiver |
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575 __ push((int)Bytecodes::_invokeinterface); // who is complaining? |
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576 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
| 710 | 577 } |
| 578 break; | |
| 579 | |
| 580 case _bound_ref_mh: | |
| 581 case _bound_int_mh: | |
| 582 case _bound_long_mh: | |
| 583 case _bound_ref_direct_mh: | |
| 584 case _bound_int_direct_mh: | |
| 585 case _bound_long_direct_mh: | |
| 586 { | |
| 587 bool direct_to_method = (ek >= _bound_ref_direct_mh); | |
| 1304 | 588 BasicType arg_type = T_ILLEGAL; |
| 589 int arg_mask = _INSERT_NO_MASK; | |
| 590 int arg_slots = -1; | |
| 591 get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots); | |
| 710 | 592 |
| 593 // make room for the new argument: | |
| 594 __ movl(rax_argslot, rcx_bmh_vmargslot); | |
| 595 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 596 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, | |
| 597 rax_argslot, rbx_temp, rdx_temp); | |
| 598 | |
| 599 // store bound argument into the new stack slot: | |
| 1846 | 600 __ load_heap_oop(rbx_temp, rcx_bmh_argument); |
| 710 | 601 Address prim_value_addr(rbx_temp, java_lang_boxing_object::value_offset_in_bytes(arg_type)); |
| 602 if (arg_type == T_OBJECT) { | |
| 603 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
| 604 } else { | |
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605 __ load_sized_value(rdx_temp, prim_value_addr, |
| 710 | 606 type2aelembytes(arg_type), is_signed_subword_type(arg_type)); |
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607 __ movptr(Address(rax_argslot, 0), rdx_temp); |
| 710 | 608 #ifndef _LP64 |
| 609 if (arg_slots == 2) { | |
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610 __ movl(rdx_temp, prim_value_addr.plus_disp(wordSize)); |
| 1506 | 611 __ movl(Address(rax_argslot, Interpreter::stackElementSize), rdx_temp); |
| 710 | 612 } |
| 613 #endif //_LP64 | |
| 614 } | |
| 615 | |
| 616 if (direct_to_method) { | |
| 617 Register rbx_method = rbx_temp; | |
| 1846 | 618 __ load_heap_oop(rbx_method, rcx_mh_vmtarget); |
| 710 | 619 __ verify_oop(rbx_method); |
| 620 __ jmp(rbx_method_fie); | |
| 621 } else { | |
| 1846 | 622 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 623 __ verify_oop(rcx_recv); |
| 624 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 625 } | |
| 626 } | |
| 627 break; | |
| 628 | |
| 629 case _adapter_retype_only: | |
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630 case _adapter_retype_raw: |
| 710 | 631 // immediately jump to the next MH layer: |
| 1846 | 632 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 633 __ verify_oop(rcx_recv); |
| 634 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 635 // This is OK when all parameter types widen. | |
| 636 // It is also OK when a return type narrows. | |
| 637 break; | |
| 638 | |
| 639 case _adapter_check_cast: | |
| 640 { | |
| 641 // temps: | |
| 642 Register rbx_klass = rbx_temp; // interesting AMH data | |
| 643 | |
| 644 // check a reference argument before jumping to the next layer of MH: | |
| 645 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 646 vmarg = __ argument_address(rax_argslot); | |
| 647 | |
| 648 // What class are we casting to? | |
| 1846 | 649 __ load_heap_oop(rbx_klass, rcx_amh_argument); // this is a Class object! |
| 650 __ load_heap_oop(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes())); | |
| 710 | 651 |
| 652 Label done; | |
| 653 __ movptr(rdx_temp, vmarg); | |
| 1277 | 654 __ testptr(rdx_temp, rdx_temp); |
| 1846 | 655 __ jcc(Assembler::zero, done); // no cast if null |
| 710 | 656 __ load_klass(rdx_temp, rdx_temp); |
| 657 | |
| 658 // live at this point: | |
| 659 // - rbx_klass: klass required by the target method | |
| 660 // - rdx_temp: argument klass to test | |
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661 // - rcx_recv: adapter method handle |
| 710 | 662 __ check_klass_subtype(rdx_temp, rbx_klass, rax_argslot, done); |
| 663 | |
| 664 // If we get here, the type check failed! | |
| 665 // Call the wrong_method_type stub, passing the failing argument type in rax. | |
| 666 Register rax_mtype = rax_argslot; | |
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667 __ movl(rax_argslot, rcx_amh_vmargslot); // reload argslot field |
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668 __ movptr(rdx_temp, vmarg); |
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669 |
| 1846 | 670 __ load_heap_oop(rbx_klass, rcx_amh_argument); // required class |
| 671 __ push(rbx_klass); | |
| 672 __ push(rdx_temp); // bad object | |
| 673 __ push((int)Bytecodes::_checkcast); // who is complaining? | |
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674 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
| 710 | 675 |
| 676 __ bind(done); | |
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677 // get the new MH: |
| 1846 | 678 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 679 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
| 680 } | |
| 681 break; | |
| 682 | |
| 683 case _adapter_prim_to_prim: | |
| 684 case _adapter_ref_to_prim: | |
| 685 // handled completely by optimized cases | |
| 686 __ stop("init_AdapterMethodHandle should not issue this"); | |
| 687 break; | |
| 688 | |
| 689 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim | |
| 690 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim | |
| 691 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim | |
| 692 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim | |
| 693 { | |
| 694 // perform an in-place conversion to int or an int subword | |
| 695 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 696 vmarg = __ argument_address(rax_argslot); | |
| 697 | |
| 698 switch (ek) { | |
| 699 case _adapter_opt_i2i: | |
| 700 __ movl(rdx_temp, vmarg); | |
| 701 break; | |
| 702 case _adapter_opt_l2i: | |
| 703 { | |
| 704 // just delete the extra slot; on a little-endian machine we keep the first | |
| 705 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
| 706 remove_arg_slots(_masm, -stack_move_unit(), | |
| 707 rax_argslot, rbx_temp, rdx_temp); | |
| 1506 | 708 vmarg = Address(rax_argslot, -Interpreter::stackElementSize); |
| 710 | 709 __ movl(rdx_temp, vmarg); |
| 710 } | |
| 711 break; | |
| 712 case _adapter_opt_unboxi: | |
| 713 { | |
| 714 // Load the value up from the heap. | |
| 715 __ movptr(rdx_temp, vmarg); | |
| 716 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); | |
| 717 #ifdef ASSERT | |
| 718 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { | |
| 719 if (is_subword_type(BasicType(bt))) | |
| 720 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), ""); | |
| 721 } | |
| 722 #endif | |
| 723 __ null_check(rdx_temp, value_offset); | |
| 724 __ movl(rdx_temp, Address(rdx_temp, value_offset)); | |
| 725 // We load this as a word. Because we are little-endian, | |
| 726 // the low bits will be correct, but the high bits may need cleaning. | |
| 727 // The vminfo will guide us to clean those bits. | |
| 728 } | |
| 729 break; | |
| 730 default: | |
| 1304 | 731 ShouldNotReachHere(); |
| 710 | 732 } |
| 733 | |
| 1304 | 734 // Do the requested conversion and store the value. |
| 710 | 735 Register rbx_vminfo = rbx_temp; |
| 736 __ movl(rbx_vminfo, rcx_amh_conversion); | |
| 737 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
| 738 | |
| 739 // get the new MH: | |
| 1846 | 740 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 741 // (now we are done with the old MH) |
| 742 | |
| 743 // original 32-bit vmdata word must be of this form: | |
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744 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 | |
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745 __ xchgptr(rcx, rbx_vminfo); // free rcx for shifts |
| 710 | 746 __ shll(rdx_temp /*, rcx*/); |
| 747 Label zero_extend, done; | |
| 748 __ testl(rcx, CONV_VMINFO_SIGN_FLAG); | |
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749 __ jccb(Assembler::zero, zero_extend); |
| 710 | 750 |
| 751 // this path is taken for int->byte, int->short | |
| 752 __ sarl(rdx_temp /*, rcx*/); | |
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753 __ jmpb(done); |
| 710 | 754 |
| 755 __ bind(zero_extend); | |
| 756 // this is taken for int->char | |
| 757 __ shrl(rdx_temp /*, rcx*/); | |
| 758 | |
| 759 __ bind(done); | |
| 1304 | 760 __ movl(vmarg, rdx_temp); // Store the value. |
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761 __ xchgptr(rcx, rbx_vminfo); // restore rcx_recv |
| 710 | 762 |
| 763 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 764 } | |
| 765 break; | |
| 766 | |
| 767 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim | |
| 768 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim | |
| 769 { | |
| 770 // perform an in-place int-to-long or ref-to-long conversion | |
| 771 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 772 | |
| 773 // on a little-endian machine we keep the first slot and add another after | |
| 774 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
| 775 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, | |
| 776 rax_argslot, rbx_temp, rdx_temp); | |
| 1506 | 777 Address vmarg1(rax_argslot, -Interpreter::stackElementSize); |
| 778 Address vmarg2 = vmarg1.plus_disp(Interpreter::stackElementSize); | |
| 710 | 779 |
| 780 switch (ek) { | |
| 781 case _adapter_opt_i2l: | |
| 782 { | |
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783 #ifdef _LP64 |
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784 __ movslq(rdx_temp, vmarg1); // Load sign-extended |
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785 __ movq(vmarg1, rdx_temp); // Store into first slot |
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786 #else |
| 710 | 787 __ movl(rdx_temp, vmarg1); |
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788 __ sarl(rdx_temp, BitsPerInt - 1); // __ extend_sign() |
| 710 | 789 __ movl(vmarg2, rdx_temp); // store second word |
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790 #endif |
| 710 | 791 } |
| 792 break; | |
| 793 case _adapter_opt_unboxl: | |
| 794 { | |
| 795 // Load the value up from the heap. | |
| 796 __ movptr(rdx_temp, vmarg1); | |
| 797 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG); | |
| 798 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), ""); | |
| 799 __ null_check(rdx_temp, value_offset); | |
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800 #ifdef _LP64 |
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801 __ movq(rbx_temp, Address(rdx_temp, value_offset)); |
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802 __ movq(vmarg1, rbx_temp); |
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803 #else |
| 710 | 804 __ movl(rbx_temp, Address(rdx_temp, value_offset + 0*BytesPerInt)); |
| 805 __ movl(rdx_temp, Address(rdx_temp, value_offset + 1*BytesPerInt)); | |
| 806 __ movl(vmarg1, rbx_temp); | |
| 807 __ movl(vmarg2, rdx_temp); | |
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808 #endif |
| 710 | 809 } |
| 810 break; | |
| 811 default: | |
| 1304 | 812 ShouldNotReachHere(); |
| 710 | 813 } |
| 814 | |
| 1846 | 815 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 816 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
| 817 } | |
| 818 break; | |
| 819 | |
| 820 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim | |
| 821 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim | |
| 822 { | |
| 823 // perform an in-place floating primitive conversion | |
| 824 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 825 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
| 826 if (ek == _adapter_opt_f2d) { | |
| 827 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, | |
| 828 rax_argslot, rbx_temp, rdx_temp); | |
| 829 } | |
| 1506 | 830 Address vmarg(rax_argslot, -Interpreter::stackElementSize); |
| 710 | 831 |
| 832 #ifdef _LP64 | |
| 833 if (ek == _adapter_opt_f2d) { | |
| 834 __ movflt(xmm0, vmarg); | |
| 835 __ cvtss2sd(xmm0, xmm0); | |
| 836 __ movdbl(vmarg, xmm0); | |
| 837 } else { | |
| 838 __ movdbl(xmm0, vmarg); | |
| 839 __ cvtsd2ss(xmm0, xmm0); | |
| 840 __ movflt(vmarg, xmm0); | |
| 841 } | |
| 842 #else //_LP64 | |
| 843 if (ek == _adapter_opt_f2d) { | |
| 844 __ fld_s(vmarg); // load float to ST0 | |
| 845 __ fstp_s(vmarg); // store single | |
| 1304 | 846 } else { |
| 710 | 847 __ fld_d(vmarg); // load double to ST0 |
| 848 __ fstp_s(vmarg); // store single | |
| 849 } | |
| 850 #endif //_LP64 | |
| 851 | |
| 852 if (ek == _adapter_opt_d2f) { | |
| 853 remove_arg_slots(_masm, -stack_move_unit(), | |
| 854 rax_argslot, rbx_temp, rdx_temp); | |
| 855 } | |
| 856 | |
| 1846 | 857 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 858 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
| 859 } | |
| 860 break; | |
| 861 | |
| 862 case _adapter_prim_to_ref: | |
| 863 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 864 break; | |
| 865 | |
| 866 case _adapter_swap_args: | |
| 867 case _adapter_rot_args: | |
| 868 // handled completely by optimized cases | |
| 869 __ stop("init_AdapterMethodHandle should not issue this"); | |
| 870 break; | |
| 871 | |
| 872 case _adapter_opt_swap_1: | |
| 873 case _adapter_opt_swap_2: | |
| 874 case _adapter_opt_rot_1_up: | |
| 875 case _adapter_opt_rot_1_down: | |
| 876 case _adapter_opt_rot_2_up: | |
| 877 case _adapter_opt_rot_2_down: | |
| 878 { | |
| 1304 | 879 int swap_bytes = 0, rotate = 0; |
| 880 get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate); | |
| 710 | 881 |
| 882 // 'argslot' is the position of the first argument to swap | |
| 883 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 884 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 885 | |
| 886 // 'vminfo' is the second | |
| 887 Register rbx_destslot = rbx_temp; | |
| 888 __ movl(rbx_destslot, rcx_amh_conversion); | |
| 889 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
| 890 __ andl(rbx_destslot, CONV_VMINFO_MASK); | |
| 891 __ lea(rbx_destslot, __ argument_address(rbx_destslot)); | |
| 892 DEBUG_ONLY(verify_argslot(_masm, rbx_destslot, "swap point must fall within current frame")); | |
| 893 | |
| 894 if (!rotate) { | |
| 895 for (int i = 0; i < swap_bytes; i += wordSize) { | |
| 896 __ movptr(rdx_temp, Address(rax_argslot , i)); | |
| 897 __ push(rdx_temp); | |
| 898 __ movptr(rdx_temp, Address(rbx_destslot, i)); | |
| 899 __ movptr(Address(rax_argslot, i), rdx_temp); | |
| 900 __ pop(rdx_temp); | |
| 901 __ movptr(Address(rbx_destslot, i), rdx_temp); | |
| 902 } | |
| 903 } else { | |
| 904 // push the first chunk, which is going to get overwritten | |
| 905 for (int i = swap_bytes; (i -= wordSize) >= 0; ) { | |
| 906 __ movptr(rdx_temp, Address(rax_argslot, i)); | |
| 907 __ push(rdx_temp); | |
| 908 } | |
| 909 | |
| 910 if (rotate > 0) { | |
| 911 // rotate upward | |
| 912 __ subptr(rax_argslot, swap_bytes); | |
| 913 #ifdef ASSERT | |
| 914 { | |
| 915 // Verify that argslot > destslot, by at least swap_bytes. | |
| 916 Label L_ok; | |
| 917 __ cmpptr(rax_argslot, rbx_destslot); | |
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918 __ jccb(Assembler::aboveEqual, L_ok); |
| 710 | 919 __ stop("source must be above destination (upward rotation)"); |
| 920 __ bind(L_ok); | |
| 921 } | |
| 922 #endif | |
| 923 // work argslot down to destslot, copying contiguous data upwards | |
| 924 // pseudo-code: | |
| 925 // rax = src_addr - swap_bytes | |
| 926 // rbx = dest_addr | |
| 927 // while (rax >= rbx) *(rax + swap_bytes) = *(rax + 0), rax--; | |
| 928 Label loop; | |
| 929 __ bind(loop); | |
| 930 __ movptr(rdx_temp, Address(rax_argslot, 0)); | |
| 931 __ movptr(Address(rax_argslot, swap_bytes), rdx_temp); | |
| 932 __ addptr(rax_argslot, -wordSize); | |
| 933 __ cmpptr(rax_argslot, rbx_destslot); | |
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934 __ jccb(Assembler::aboveEqual, loop); |
| 710 | 935 } else { |
| 936 __ addptr(rax_argslot, swap_bytes); | |
| 937 #ifdef ASSERT | |
| 938 { | |
| 939 // Verify that argslot < destslot, by at least swap_bytes. | |
| 940 Label L_ok; | |
| 941 __ cmpptr(rax_argslot, rbx_destslot); | |
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942 __ jccb(Assembler::belowEqual, L_ok); |
| 710 | 943 __ stop("source must be below destination (downward rotation)"); |
| 944 __ bind(L_ok); | |
| 945 } | |
| 946 #endif | |
| 947 // work argslot up to destslot, copying contiguous data downwards | |
| 948 // pseudo-code: | |
| 949 // rax = src_addr + swap_bytes | |
| 950 // rbx = dest_addr | |
| 951 // while (rax <= rbx) *(rax - swap_bytes) = *(rax + 0), rax++; | |
| 952 Label loop; | |
| 953 __ bind(loop); | |
| 954 __ movptr(rdx_temp, Address(rax_argslot, 0)); | |
| 955 __ movptr(Address(rax_argslot, -swap_bytes), rdx_temp); | |
| 956 __ addptr(rax_argslot, wordSize); | |
| 957 __ cmpptr(rax_argslot, rbx_destslot); | |
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958 __ jccb(Assembler::belowEqual, loop); |
| 710 | 959 } |
| 960 | |
| 961 // pop the original first chunk into the destination slot, now free | |
| 962 for (int i = 0; i < swap_bytes; i += wordSize) { | |
| 963 __ pop(rdx_temp); | |
| 964 __ movptr(Address(rbx_destslot, i), rdx_temp); | |
| 965 } | |
| 966 } | |
| 967 | |
| 1846 | 968 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 969 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
| 970 } | |
| 971 break; | |
| 972 | |
| 973 case _adapter_dup_args: | |
| 974 { | |
| 975 // 'argslot' is the position of the first argument to duplicate | |
| 976 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 977 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 978 | |
| 979 // 'stack_move' is negative number of words to duplicate | |
| 980 Register rdx_stack_move = rdx_temp; | |
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981 __ movl2ptr(rdx_stack_move, rcx_amh_conversion); |
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982 __ sarptr(rdx_stack_move, CONV_STACK_MOVE_SHIFT); |
| 710 | 983 |
| 984 int argslot0_num = 0; | |
| 985 Address argslot0 = __ argument_address(RegisterOrConstant(argslot0_num)); | |
| 986 assert(argslot0.base() == rsp, ""); | |
| 987 int pre_arg_size = argslot0.disp(); | |
| 988 assert(pre_arg_size % wordSize == 0, ""); | |
| 989 assert(pre_arg_size > 0, "must include PC"); | |
| 990 | |
| 991 // remember the old rsp+1 (argslot[0]) | |
| 992 Register rbx_oldarg = rbx_temp; | |
| 993 __ lea(rbx_oldarg, argslot0); | |
| 994 | |
| 995 // move rsp down to make room for dups | |
| 996 __ lea(rsp, Address(rsp, rdx_stack_move, Address::times_ptr)); | |
| 997 | |
| 998 // compute the new rsp+1 (argslot[0]) | |
| 999 Register rdx_newarg = rdx_temp; | |
| 1000 __ lea(rdx_newarg, argslot0); | |
| 1001 | |
| 1002 __ push(rdi); // need a temp | |
| 1003 // (preceding push must be done after arg addresses are taken!) | |
| 1004 | |
| 1005 // pull down the pre_arg_size data (PC) | |
| 1006 for (int i = -pre_arg_size; i < 0; i += wordSize) { | |
| 1007 __ movptr(rdi, Address(rbx_oldarg, i)); | |
| 1008 __ movptr(Address(rdx_newarg, i), rdi); | |
| 1009 } | |
| 1010 | |
| 1011 // copy from rax_argslot[0...] down to new_rsp[1...] | |
| 1012 // pseudo-code: | |
| 1013 // rbx = old_rsp+1 | |
| 1014 // rdx = new_rsp+1 | |
| 1015 // rax = argslot | |
| 1016 // while (rdx < rbx) *rdx++ = *rax++ | |
| 1017 Label loop; | |
| 1018 __ bind(loop); | |
| 1019 __ movptr(rdi, Address(rax_argslot, 0)); | |
| 1020 __ movptr(Address(rdx_newarg, 0), rdi); | |
| 1021 __ addptr(rax_argslot, wordSize); | |
| 1022 __ addptr(rdx_newarg, wordSize); | |
| 1023 __ cmpptr(rdx_newarg, rbx_oldarg); | |
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1024 __ jccb(Assembler::less, loop); |
| 710 | 1025 |
| 1026 __ pop(rdi); // restore temp | |
| 1027 | |
| 1846 | 1028 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 1029 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
| 1030 } | |
| 1031 break; | |
| 1032 | |
| 1033 case _adapter_drop_args: | |
| 1034 { | |
| 1035 // 'argslot' is the position of the first argument to nuke | |
| 1036 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 1037 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 1038 | |
| 1039 __ push(rdi); // need a temp | |
| 1040 // (must do previous push after argslot address is taken) | |
| 1041 | |
| 1042 // 'stack_move' is number of words to drop | |
| 1043 Register rdi_stack_move = rdi; | |
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1044 __ movl2ptr(rdi_stack_move, rcx_amh_conversion); |
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1045 __ sarptr(rdi_stack_move, CONV_STACK_MOVE_SHIFT); |
| 710 | 1046 remove_arg_slots(_masm, rdi_stack_move, |
| 1047 rax_argslot, rbx_temp, rdx_temp); | |
| 1048 | |
| 1049 __ pop(rdi); // restore temp | |
| 1050 | |
| 1846 | 1051 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 1052 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
| 1053 } | |
| 1054 break; | |
| 1055 | |
| 1056 case _adapter_collect_args: | |
| 1057 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 1058 break; | |
| 1059 | |
| 1060 case _adapter_spread_args: | |
| 1061 // handled completely by optimized cases | |
| 1062 __ stop("init_AdapterMethodHandle should not issue this"); | |
| 1063 break; | |
| 1064 | |
| 1065 case _adapter_opt_spread_0: | |
| 1066 case _adapter_opt_spread_1: | |
| 1067 case _adapter_opt_spread_more: | |
| 1068 { | |
| 1069 // spread an array out into a group of arguments | |
| 1304 | 1070 int length_constant = get_ek_adapter_opt_spread_info(ek); |
| 710 | 1071 |
| 1072 // find the address of the array argument | |
| 1073 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 1074 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 1075 | |
| 1076 // grab some temps | |
| 1077 { __ push(rsi); __ push(rdi); } | |
| 1078 // (preceding pushes must be done after argslot address is taken!) | |
| 1079 #define UNPUSH_RSI_RDI \ | |
| 1080 { __ pop(rdi); __ pop(rsi); } | |
| 1081 | |
| 1082 // arx_argslot points both to the array and to the first output arg | |
| 1083 vmarg = Address(rax_argslot, 0); | |
| 1084 | |
| 1085 // Get the array value. | |
| 1086 Register rsi_array = rsi; | |
| 1087 Register rdx_array_klass = rdx_temp; | |
| 1088 BasicType elem_type = T_OBJECT; | |
| 1089 int length_offset = arrayOopDesc::length_offset_in_bytes(); | |
| 1090 int elem0_offset = arrayOopDesc::base_offset_in_bytes(elem_type); | |
| 1091 __ movptr(rsi_array, vmarg); | |
| 1092 Label skip_array_check; | |
| 1093 if (length_constant == 0) { | |
| 1094 __ testptr(rsi_array, rsi_array); | |
| 1095 __ jcc(Assembler::zero, skip_array_check); | |
| 1096 } | |
| 1097 __ null_check(rsi_array, oopDesc::klass_offset_in_bytes()); | |
| 1098 __ load_klass(rdx_array_klass, rsi_array); | |
| 1099 | |
| 1100 // Check the array type. | |
| 1101 Register rbx_klass = rbx_temp; | |
| 1846 | 1102 __ load_heap_oop(rbx_klass, rcx_amh_argument); // this is a Class object! |
| 1103 __ load_heap_oop(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes())); | |
| 710 | 1104 |
| 1105 Label ok_array_klass, bad_array_klass, bad_array_length; | |
| 1106 __ check_klass_subtype(rdx_array_klass, rbx_klass, rdi, ok_array_klass); | |
| 1107 // If we get here, the type check failed! | |
| 1108 __ jmp(bad_array_klass); | |
| 1109 __ bind(ok_array_klass); | |
| 1110 | |
| 1111 // Check length. | |
| 1112 if (length_constant >= 0) { | |
| 1113 __ cmpl(Address(rsi_array, length_offset), length_constant); | |
| 1114 } else { | |
| 1115 Register rbx_vminfo = rbx_temp; | |
| 1116 __ movl(rbx_vminfo, rcx_amh_conversion); | |
| 1117 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
| 1118 __ andl(rbx_vminfo, CONV_VMINFO_MASK); | |
| 1119 __ cmpl(rbx_vminfo, Address(rsi_array, length_offset)); | |
| 1120 } | |
| 1121 __ jcc(Assembler::notEqual, bad_array_length); | |
| 1122 | |
| 1123 Register rdx_argslot_limit = rdx_temp; | |
| 1124 | |
| 1125 // Array length checks out. Now insert any required stack slots. | |
| 1126 if (length_constant == -1) { | |
| 1127 // Form a pointer to the end of the affected region. | |
| 1506 | 1128 __ lea(rdx_argslot_limit, Address(rax_argslot, Interpreter::stackElementSize)); |
| 710 | 1129 // 'stack_move' is negative number of words to insert |
| 1130 Register rdi_stack_move = rdi; | |
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1131 __ movl2ptr(rdi_stack_move, rcx_amh_conversion); |
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1132 __ sarptr(rdi_stack_move, CONV_STACK_MOVE_SHIFT); |
| 710 | 1133 Register rsi_temp = rsi_array; // spill this |
| 1134 insert_arg_slots(_masm, rdi_stack_move, -1, | |
| 1135 rax_argslot, rbx_temp, rsi_temp); | |
| 1136 // reload the array (since rsi was killed) | |
| 1137 __ movptr(rsi_array, vmarg); | |
| 1138 } else if (length_constant > 1) { | |
| 1139 int arg_mask = 0; | |
| 1140 int new_slots = (length_constant - 1); | |
| 1141 for (int i = 0; i < new_slots; i++) { | |
| 1142 arg_mask <<= 1; | |
| 1143 arg_mask |= _INSERT_REF_MASK; | |
| 1144 } | |
| 1145 insert_arg_slots(_masm, new_slots * stack_move_unit(), arg_mask, | |
| 1146 rax_argslot, rbx_temp, rdx_temp); | |
| 1147 } else if (length_constant == 1) { | |
| 1148 // no stack resizing required | |
| 1149 } else if (length_constant == 0) { | |
| 1150 remove_arg_slots(_masm, -stack_move_unit(), | |
| 1151 rax_argslot, rbx_temp, rdx_temp); | |
| 1152 } | |
| 1153 | |
| 1154 // Copy from the array to the new slots. | |
| 1155 // Note: Stack change code preserves integrity of rax_argslot pointer. | |
| 1156 // So even after slot insertions, rax_argslot still points to first argument. | |
| 1157 if (length_constant == -1) { | |
| 1158 // [rax_argslot, rdx_argslot_limit) is the area we are inserting into. | |
| 1159 Register rsi_source = rsi_array; | |
| 1160 __ lea(rsi_source, Address(rsi_array, elem0_offset)); | |
| 1161 Label loop; | |
| 1162 __ bind(loop); | |
| 1163 __ movptr(rbx_temp, Address(rsi_source, 0)); | |
| 1164 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
| 1165 __ addptr(rsi_source, type2aelembytes(elem_type)); | |
| 1506 | 1166 __ addptr(rax_argslot, Interpreter::stackElementSize); |
| 710 | 1167 __ cmpptr(rax_argslot, rdx_argslot_limit); |
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1168 __ jccb(Assembler::less, loop); |
| 710 | 1169 } else if (length_constant == 0) { |
| 1170 __ bind(skip_array_check); | |
| 1171 // nothing to copy | |
| 1172 } else { | |
| 1173 int elem_offset = elem0_offset; | |
| 1174 int slot_offset = 0; | |
| 1175 for (int index = 0; index < length_constant; index++) { | |
| 1176 __ movptr(rbx_temp, Address(rsi_array, elem_offset)); | |
| 1177 __ movptr(Address(rax_argslot, slot_offset), rbx_temp); | |
| 1178 elem_offset += type2aelembytes(elem_type); | |
| 1506 | 1179 slot_offset += Interpreter::stackElementSize; |
| 710 | 1180 } |
| 1181 } | |
| 1182 | |
| 1183 // Arguments are spread. Move to next method handle. | |
| 1184 UNPUSH_RSI_RDI; | |
| 1846 | 1185 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| 710 | 1186 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
| 1187 | |
| 1188 __ bind(bad_array_klass); | |
| 1189 UNPUSH_RSI_RDI; | |
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1190 __ pushptr(Address(rdx_array_klass, java_mirror_offset)); // required type |
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1191 __ pushptr(vmarg); // bad array |
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1192 __ push((int)Bytecodes::_aaload); // who is complaining? |
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1193 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
| 710 | 1194 |
| 1195 __ bind(bad_array_length); | |
| 1196 UNPUSH_RSI_RDI; | |
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1197 __ push(rcx_recv); // AMH requiring a certain length |
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1198 __ pushptr(vmarg); // bad array |
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1199 __ push((int)Bytecodes::_arraylength); // who is complaining? |
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1200 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
| 710 | 1201 |
| 1202 #undef UNPUSH_RSI_RDI | |
| 1203 } | |
| 1204 break; | |
| 1205 | |
| 1206 case _adapter_flyby: | |
| 1207 case _adapter_ricochet: | |
| 1208 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 1209 break; | |
| 1210 | |
| 1211 default: ShouldNotReachHere(); | |
| 1212 } | |
| 1213 __ hlt(); | |
| 1214 | |
| 1215 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry); | |
| 1216 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 1217 | |
| 1218 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie)); | |
| 1219 } |