methodHandles_sparc.cpp revision 1976:8d0b933dda2d
1/* 2 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. 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 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25#include "precompiled.hpp" 26#include "interpreter/interpreter.hpp" 27#include "memory/allocation.inline.hpp" 28#include "prims/methodHandles.hpp" 29 30#define __ _masm-> 31 32#ifdef PRODUCT 33#define BLOCK_COMMENT(str) /* nothing */ 34#else 35#define BLOCK_COMMENT(str) __ block_comment(str) 36#endif 37 38#define BIND(label) bind(label); BLOCK_COMMENT(#label ":") 39 40address 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 60MethodHandleEntry* MethodHandleEntry::finish_compiled_entry(MacroAssembler* _masm, 61 address start_addr) { 62 MethodHandleEntry* me = (MethodHandleEntry*) start_addr; 63 assert(me->end_address() == start_addr, "valid ME"); 64 65 // Fill in the real end_address: 66 __ align(wordSize); 67 me->set_end_address(__ pc()); 68 69 return me; 70} 71 72 73// Code generation 74address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) { 75 // I5_savedSP/O5_savedSP: sender SP (must preserve) 76 // G4 (Gargs): incoming argument list (must preserve) 77 // G5_method: invoke methodOop 78 // G3_method_handle: receiver method handle (must load from sp[MethodTypeForm.vmslots]) 79 // O0, O1, O2, O3, O4: garbage temps, blown away 80 Register O0_mtype = O0; 81 Register O1_scratch = O1; 82 Register O2_scratch = O2; 83 Register O3_scratch = O3; 84 Register O4_argslot = O4; 85 Register O4_argbase = O4; 86 87 // emit WrongMethodType path first, to enable back-branch from main path 88 Label wrong_method_type; 89 __ bind(wrong_method_type); 90 Label invoke_generic_slow_path; 91 assert(methodOopDesc::intrinsic_id_size_in_bytes() == sizeof(u1), "");; 92 __ ldub(Address(G5_method, methodOopDesc::intrinsic_id_offset_in_bytes()), O1_scratch); 93 __ cmp(O1_scratch, (int) vmIntrinsics::_invokeExact); 94 __ brx(Assembler::notEqual, false, Assembler::pt, invoke_generic_slow_path); 95 __ delayed()->nop(); 96 __ mov(O0_mtype, G5_method_type); // required by throw_WrongMethodType 97 // mov(G3_method_handle, G3_method_handle); // already in this register 98 __ jump_to(AddressLiteral(Interpreter::throw_WrongMethodType_entry()), O1_scratch); 99 __ delayed()->nop(); 100 101 // here's where control starts out: 102 __ align(CodeEntryAlignment); 103 address entry_point = __ pc(); 104 105 // fetch the MethodType from the method handle 106 { 107 Register tem = G5_method; 108 for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) { 109 __ ld_ptr(Address(tem, *pchase), O0_mtype); 110 tem = O0_mtype; // in case there is another indirection 111 } 112 } 113 114 // given the MethodType, find out where the MH argument is buried 115 __ load_heap_oop(Address(O0_mtype, __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, O1_scratch)), O4_argslot); 116 __ ldsw( Address(O4_argslot, __ delayed_value(java_dyn_MethodTypeForm::vmslots_offset_in_bytes, O1_scratch)), O4_argslot); 117 __ add(Gargs, __ argument_offset(O4_argslot, 1), O4_argbase); 118 // Note: argument_address uses its input as a scratch register! 119 __ ld_ptr(Address(O4_argbase, -Interpreter::stackElementSize), G3_method_handle); 120 121 trace_method_handle(_masm, "invokeExact"); 122 123 __ check_method_handle_type(O0_mtype, G3_method_handle, O1_scratch, wrong_method_type); 124 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 125 126 // for invokeGeneric (only), apply argument and result conversions on the fly 127 __ bind(invoke_generic_slow_path); 128#ifdef ASSERT 129 { Label L; 130 __ ldub(Address(G5_method, methodOopDesc::intrinsic_id_offset_in_bytes()), O1_scratch); 131 __ cmp(O1_scratch, (int) vmIntrinsics::_invokeGeneric); 132 __ brx(Assembler::equal, false, Assembler::pt, L); 133 __ delayed()->nop(); 134 __ stop("bad methodOop::intrinsic_id"); 135 __ bind(L); 136 } 137#endif //ASSERT 138 139 // make room on the stack for another pointer: 140 insert_arg_slots(_masm, 2 * stack_move_unit(), _INSERT_REF_MASK, O4_argbase, O1_scratch, O2_scratch, O3_scratch); 141 // load up an adapter from the calling type (Java weaves this) 142 Register O2_form = O2_scratch; 143 Register O3_adapter = O3_scratch; 144 __ load_heap_oop(Address(O0_mtype, __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, O1_scratch)), O2_form); 145 // load_heap_oop(Address(O2_form, __ delayed_value(java_dyn_MethodTypeForm::genericInvoker_offset_in_bytes, O1_scratch)), O3_adapter); 146 // deal with old JDK versions: 147 __ add( Address(O2_form, __ delayed_value(java_dyn_MethodTypeForm::genericInvoker_offset_in_bytes, O1_scratch)), O3_adapter); 148 __ cmp(O3_adapter, O2_form); 149 Label sorry_no_invoke_generic; 150 __ brx(Assembler::lessUnsigned, false, Assembler::pn, sorry_no_invoke_generic); 151 __ delayed()->nop(); 152 153 __ load_heap_oop(Address(O3_adapter, 0), O3_adapter); 154 __ tst(O3_adapter); 155 __ brx(Assembler::zero, false, Assembler::pn, sorry_no_invoke_generic); 156 __ delayed()->nop(); 157 __ st_ptr(O3_adapter, Address(O4_argbase, 1 * Interpreter::stackElementSize)); 158 // As a trusted first argument, pass the type being called, so the adapter knows 159 // the actual types of the arguments and return values. 160 // (Generic invokers are shared among form-families of method-type.) 161 __ st_ptr(O0_mtype, Address(O4_argbase, 0 * Interpreter::stackElementSize)); 162 // FIXME: assert that O3_adapter is of the right method-type. 163 __ mov(O3_adapter, G3_method_handle); 164 trace_method_handle(_masm, "invokeGeneric"); 165 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 166 167 __ bind(sorry_no_invoke_generic); // no invokeGeneric implementation available! 168 __ mov(O0_mtype, G5_method_type); // required by throw_WrongMethodType 169 // mov(G3_method_handle, G3_method_handle); // already in this register 170 __ jump_to(AddressLiteral(Interpreter::throw_WrongMethodType_entry()), O1_scratch); 171 __ delayed()->nop(); 172 173 return entry_point; 174} 175 176 177#ifdef ASSERT 178static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, Register temp_reg, const char* error_message) { 179 // Verify that argslot lies within (Gargs, FP]. 180 Label L_ok, L_bad; 181 BLOCK_COMMENT("{ verify_argslot"); 182#ifdef _LP64 183 __ add(FP, STACK_BIAS, temp_reg); 184 __ cmp(argslot_reg, temp_reg); 185#else 186 __ cmp(argslot_reg, FP); 187#endif 188 __ brx(Assembler::greaterUnsigned, false, Assembler::pn, L_bad); 189 __ delayed()->nop(); 190 __ cmp(Gargs, argslot_reg); 191 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok); 192 __ delayed()->nop(); 193 __ bind(L_bad); 194 __ stop(error_message); 195 __ bind(L_ok); 196 BLOCK_COMMENT("} verify_argslot"); 197} 198#endif 199 200 201// Helper to insert argument slots into the stack. 202// arg_slots must be a multiple of stack_move_unit() and <= 0 203void MethodHandles::insert_arg_slots(MacroAssembler* _masm, 204 RegisterOrConstant arg_slots, 205 int arg_mask, 206 Register argslot_reg, 207 Register temp_reg, Register temp2_reg, Register temp3_reg) { 208 assert(temp3_reg != noreg, "temp3 required"); 209 assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg, 210 (!arg_slots.is_register() ? Gargs : arg_slots.as_register())); 211 212#ifdef ASSERT 213 verify_argslot(_masm, argslot_reg, temp_reg, "insertion point must fall within current frame"); 214 if (arg_slots.is_register()) { 215 Label L_ok, L_bad; 216 __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD); 217 __ br(Assembler::greater, false, Assembler::pn, L_bad); 218 __ delayed()->nop(); 219 __ btst(-stack_move_unit() - 1, arg_slots.as_register()); 220 __ br(Assembler::zero, false, Assembler::pt, L_ok); 221 __ delayed()->nop(); 222 __ bind(L_bad); 223 __ stop("assert arg_slots <= 0 and clear low bits"); 224 __ bind(L_ok); 225 } else { 226 assert(arg_slots.as_constant() <= 0, ""); 227 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); 228 } 229#endif // ASSERT 230 231#ifdef _LP64 232 if (arg_slots.is_register()) { 233 // Was arg_slots register loaded as signed int? 234 Label L_ok; 235 __ sll(arg_slots.as_register(), BitsPerInt, temp_reg); 236 __ sra(temp_reg, BitsPerInt, temp_reg); 237 __ cmp(arg_slots.as_register(), temp_reg); 238 __ br(Assembler::equal, false, Assembler::pt, L_ok); 239 __ delayed()->nop(); 240 __ stop("arg_slots register not loaded as signed int"); 241 __ bind(L_ok); 242 } 243#endif 244 245 // Make space on the stack for the inserted argument(s). 246 // Then pull down everything shallower than argslot_reg. 247 // The stacked return address gets pulled down with everything else. 248 // That is, copy [sp, argslot) downward by -size words. In pseudo-code: 249 // sp -= size; 250 // for (temp = sp + size; temp < argslot; temp++) 251 // temp[-size] = temp[0] 252 // argslot -= size; 253 BLOCK_COMMENT("insert_arg_slots {"); 254 RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg); 255 256 // Keep the stack pointer 2*wordSize aligned. 257 const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1); 258 RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg); 259 __ add(SP, masked_offset, SP); 260 261 __ mov(Gargs, temp_reg); // source pointer for copy 262 __ add(Gargs, offset, Gargs); 263 264 { 265 Label loop; 266 __ BIND(loop); 267 // pull one word down each time through the loop 268 __ ld_ptr(Address(temp_reg, 0), temp2_reg); 269 __ st_ptr(temp2_reg, Address(temp_reg, offset)); 270 __ add(temp_reg, wordSize, temp_reg); 271 __ cmp(temp_reg, argslot_reg); 272 __ brx(Assembler::less, false, Assembler::pt, loop); 273 __ delayed()->nop(); // FILLME 274 } 275 276 // Now move the argslot down, to point to the opened-up space. 277 __ add(argslot_reg, offset, argslot_reg); 278 BLOCK_COMMENT("} insert_arg_slots"); 279} 280 281 282// Helper to remove argument slots from the stack. 283// arg_slots must be a multiple of stack_move_unit() and >= 0 284void MethodHandles::remove_arg_slots(MacroAssembler* _masm, 285 RegisterOrConstant arg_slots, 286 Register argslot_reg, 287 Register temp_reg, Register temp2_reg, Register temp3_reg) { 288 assert(temp3_reg != noreg, "temp3 required"); 289 assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg, 290 (!arg_slots.is_register() ? Gargs : arg_slots.as_register())); 291 292 RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg); 293 294#ifdef ASSERT 295 // Verify that [argslot..argslot+size) lies within (Gargs, FP). 296 __ add(argslot_reg, offset, temp2_reg); 297 verify_argslot(_masm, temp2_reg, temp_reg, "deleted argument(s) must fall within current frame"); 298 if (arg_slots.is_register()) { 299 Label L_ok, L_bad; 300 __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD); 301 __ br(Assembler::less, false, Assembler::pn, L_bad); 302 __ delayed()->nop(); 303 __ btst(-stack_move_unit() - 1, arg_slots.as_register()); 304 __ br(Assembler::zero, false, Assembler::pt, L_ok); 305 __ delayed()->nop(); 306 __ bind(L_bad); 307 __ stop("assert arg_slots >= 0 and clear low bits"); 308 __ bind(L_ok); 309 } else { 310 assert(arg_slots.as_constant() >= 0, ""); 311 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); 312 } 313#endif // ASSERT 314 315 BLOCK_COMMENT("remove_arg_slots {"); 316 // Pull up everything shallower than argslot. 317 // Then remove the excess space on the stack. 318 // The stacked return address gets pulled up with everything else. 319 // That is, copy [sp, argslot) upward by size words. In pseudo-code: 320 // for (temp = argslot-1; temp >= sp; --temp) 321 // temp[size] = temp[0] 322 // argslot += size; 323 // sp += size; 324 __ sub(argslot_reg, wordSize, temp_reg); // source pointer for copy 325 { 326 Label loop; 327 __ BIND(loop); 328 // pull one word up each time through the loop 329 __ ld_ptr(Address(temp_reg, 0), temp2_reg); 330 __ st_ptr(temp2_reg, Address(temp_reg, offset)); 331 __ sub(temp_reg, wordSize, temp_reg); 332 __ cmp(temp_reg, Gargs); 333 __ brx(Assembler::greaterEqual, false, Assembler::pt, loop); 334 __ delayed()->nop(); // FILLME 335 } 336 337 // Now move the argslot up, to point to the just-copied block. 338 __ add(Gargs, offset, Gargs); 339 // And adjust the argslot address to point at the deletion point. 340 __ add(argslot_reg, offset, argslot_reg); 341 342 // Keep the stack pointer 2*wordSize aligned. 343 const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1); 344 RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg); 345 __ add(SP, masked_offset, SP); 346 BLOCK_COMMENT("} remove_arg_slots"); 347} 348 349 350#ifndef PRODUCT 351extern "C" void print_method_handle(oop mh); 352void trace_method_handle_stub(const char* adaptername, 353 oopDesc* mh) { 354 printf("MH %s mh="INTPTR_FORMAT"\n", adaptername, (intptr_t) mh); 355 print_method_handle(mh); 356} 357void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) { 358 if (!TraceMethodHandles) return; 359 BLOCK_COMMENT("trace_method_handle {"); 360 // save: Gargs, O5_savedSP 361 __ save_frame(16); 362 __ set((intptr_t) adaptername, O0); 363 __ mov(G3_method_handle, O1); 364 __ mov(G3_method_handle, L3); 365 __ mov(Gargs, L4); 366 __ mov(G5_method_type, L5); 367 __ call_VM_leaf(L7, CAST_FROM_FN_PTR(address, trace_method_handle_stub)); 368 369 __ mov(L3, G3_method_handle); 370 __ mov(L4, Gargs); 371 __ mov(L5, G5_method_type); 372 __ restore(); 373 BLOCK_COMMENT("} trace_method_handle"); 374} 375#endif // PRODUCT 376 377// which conversion op types are implemented here? 378int MethodHandles::adapter_conversion_ops_supported_mask() { 379 return ((1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_ONLY) 380 |(1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW) 381 |(1<<sun_dyn_AdapterMethodHandle::OP_CHECK_CAST) 382 |(1<<sun_dyn_AdapterMethodHandle::OP_PRIM_TO_PRIM) 383 |(1<<sun_dyn_AdapterMethodHandle::OP_REF_TO_PRIM) 384 |(1<<sun_dyn_AdapterMethodHandle::OP_SWAP_ARGS) 385 |(1<<sun_dyn_AdapterMethodHandle::OP_ROT_ARGS) 386 |(1<<sun_dyn_AdapterMethodHandle::OP_DUP_ARGS) 387 |(1<<sun_dyn_AdapterMethodHandle::OP_DROP_ARGS) 388 //|(1<<sun_dyn_AdapterMethodHandle::OP_SPREAD_ARGS) //BUG! 389 ); 390 // FIXME: MethodHandlesTest gets a crash if we enable OP_SPREAD_ARGS. 391} 392 393//------------------------------------------------------------------------------ 394// MethodHandles::generate_method_handle_stub 395// 396// Generate an "entry" field for a method handle. 397// This determines how the method handle will respond to calls. 398void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek, TRAPS) { 399 // Here is the register state during an interpreted call, 400 // as set up by generate_method_handle_interpreter_entry(): 401 // - G5: garbage temp (was MethodHandle.invoke methodOop, unused) 402 // - G3: receiver method handle 403 // - O5_savedSP: sender SP (must preserve) 404 405 const Register O0_argslot = O0; 406 const Register O1_scratch = O1; 407 const Register O2_scratch = O2; 408 const Register O3_scratch = O3; 409 const Register G5_index = G5; 410 411 // Argument registers for _raise_exception. 412 const Register O0_code = O0; 413 const Register O1_actual = O1; 414 const Register O2_required = O2; 415 416 guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets"); 417 418 // Some handy addresses: 419 Address G5_method_fie( G5_method, in_bytes(methodOopDesc::from_interpreted_offset())); 420 421 Address G3_mh_vmtarget( G3_method_handle, java_dyn_MethodHandle::vmtarget_offset_in_bytes()); 422 423 Address G3_dmh_vmindex( G3_method_handle, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes()); 424 425 Address G3_bmh_vmargslot( G3_method_handle, sun_dyn_BoundMethodHandle::vmargslot_offset_in_bytes()); 426 Address G3_bmh_argument( G3_method_handle, sun_dyn_BoundMethodHandle::argument_offset_in_bytes()); 427 428 Address G3_amh_vmargslot( G3_method_handle, sun_dyn_AdapterMethodHandle::vmargslot_offset_in_bytes()); 429 Address G3_amh_argument ( G3_method_handle, sun_dyn_AdapterMethodHandle::argument_offset_in_bytes()); 430 Address G3_amh_conversion(G3_method_handle, sun_dyn_AdapterMethodHandle::conversion_offset_in_bytes()); 431 432 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); 433 434 if (have_entry(ek)) { 435 __ nop(); // empty stubs make SG sick 436 return; 437 } 438 439 address interp_entry = __ pc(); 440 441 trace_method_handle(_masm, entry_name(ek)); 442 443 switch ((int) ek) { 444 case _raise_exception: 445 { 446 // Not a real MH entry, but rather shared code for raising an 447 // exception. Since we use a C2I adapter to set up the 448 // interpreter state, arguments are expected in compiler 449 // argument registers. 450 methodHandle mh(raise_exception_method()); 451 address c2i_entry = methodOopDesc::make_adapters(mh, CATCH); 452 453 __ mov(O5_savedSP, SP); // Cut the stack back to where the caller started. 454 455 Label L_no_method; 456 // FIXME: fill in _raise_exception_method with a suitable sun.dyn method 457 __ set(AddressLiteral((address) &_raise_exception_method), G5_method); 458 __ ld_ptr(Address(G5_method, 0), G5_method); 459 __ tst(G5_method); 460 __ brx(Assembler::zero, false, Assembler::pn, L_no_method); 461 __ delayed()->nop(); 462 463 const int jobject_oop_offset = 0; 464 __ ld_ptr(Address(G5_method, jobject_oop_offset), G5_method); 465 __ tst(G5_method); 466 __ brx(Assembler::zero, false, Assembler::pn, L_no_method); 467 __ delayed()->nop(); 468 469 __ verify_oop(G5_method); 470 __ jump_to(AddressLiteral(c2i_entry), O3_scratch); 471 __ delayed()->nop(); 472 473 // If we get here, the Java runtime did not do its job of creating the exception. 474 // Do something that is at least causes a valid throw from the interpreter. 475 __ bind(L_no_method); 476 __ unimplemented("call throw_WrongMethodType_entry"); 477 } 478 break; 479 480 case _invokestatic_mh: 481 case _invokespecial_mh: 482 { 483 __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop 484 __ verify_oop(G5_method); 485 // Same as TemplateTable::invokestatic or invokespecial, 486 // minus the CP setup and profiling: 487 if (ek == _invokespecial_mh) { 488 // Must load & check the first argument before entering the target method. 489 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); 490 __ ld_ptr(__ argument_address(O0_argslot), G3_method_handle); 491 __ null_check(G3_method_handle); 492 __ verify_oop(G3_method_handle); 493 } 494 __ jump_indirect_to(G5_method_fie, O1_scratch); 495 __ delayed()->nop(); 496 } 497 break; 498 499 case _invokevirtual_mh: 500 { 501 // Same as TemplateTable::invokevirtual, 502 // minus the CP setup and profiling: 503 504 // Pick out the vtable index and receiver offset from the MH, 505 // and then we can discard it: 506 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); 507 __ ldsw(G3_dmh_vmindex, G5_index); 508 // Note: The verifier allows us to ignore G3_mh_vmtarget. 509 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle); 510 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes()); 511 512 // Get receiver klass: 513 Register O0_klass = O0_argslot; 514 __ load_klass(G3_method_handle, O0_klass); 515 __ verify_oop(O0_klass); 516 517 // Get target methodOop & entry point: 518 const int base = instanceKlass::vtable_start_offset() * wordSize; 519 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); 520 521 __ sll_ptr(G5_index, LogBytesPerWord, G5_index); 522 __ add(O0_klass, G5_index, O0_klass); 523 Address vtable_entry_addr(O0_klass, base + vtableEntry::method_offset_in_bytes()); 524 __ ld_ptr(vtable_entry_addr, G5_method); 525 526 __ verify_oop(G5_method); 527 __ jump_indirect_to(G5_method_fie, O1_scratch); 528 __ delayed()->nop(); 529 } 530 break; 531 532 case _invokeinterface_mh: 533 { 534 // Same as TemplateTable::invokeinterface, 535 // minus the CP setup and profiling: 536 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); 537 Register O1_intf = O1_scratch; 538 __ load_heap_oop(G3_mh_vmtarget, O1_intf); 539 __ ldsw(G3_dmh_vmindex, G5_index); 540 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle); 541 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes()); 542 543 // Get receiver klass: 544 Register O0_klass = O0_argslot; 545 __ load_klass(G3_method_handle, O0_klass); 546 __ verify_oop(O0_klass); 547 548 // Get interface: 549 Label no_such_interface; 550 __ verify_oop(O1_intf); 551 __ lookup_interface_method(O0_klass, O1_intf, 552 // Note: next two args must be the same: 553 G5_index, G5_method, 554 O2_scratch, 555 O3_scratch, 556 no_such_interface); 557 558 __ verify_oop(G5_method); 559 __ jump_indirect_to(G5_method_fie, O1_scratch); 560 __ delayed()->nop(); 561 562 __ bind(no_such_interface); 563 // Throw an exception. 564 // For historical reasons, it will be IncompatibleClassChangeError. 565 __ unimplemented("not tested yet"); 566 __ ld_ptr(Address(O1_intf, java_mirror_offset), O2_required); // required interface 567 __ mov( O0_klass, O1_actual); // bad receiver 568 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O3_scratch); 569 __ delayed()->mov(Bytecodes::_invokeinterface, O0_code); // who is complaining? 570 } 571 break; 572 573 case _bound_ref_mh: 574 case _bound_int_mh: 575 case _bound_long_mh: 576 case _bound_ref_direct_mh: 577 case _bound_int_direct_mh: 578 case _bound_long_direct_mh: 579 { 580 const bool direct_to_method = (ek >= _bound_ref_direct_mh); 581 BasicType arg_type = T_ILLEGAL; 582 int arg_mask = _INSERT_NO_MASK; 583 int arg_slots = -1; 584 get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots); 585 586 // Make room for the new argument: 587 __ ldsw(G3_bmh_vmargslot, O0_argslot); 588 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); 589 590 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, O0_argslot, O1_scratch, O2_scratch, G5_index); 591 592 // Store bound argument into the new stack slot: 593 __ load_heap_oop(G3_bmh_argument, O1_scratch); 594 if (arg_type == T_OBJECT) { 595 __ st_ptr(O1_scratch, Address(O0_argslot, 0)); 596 } else { 597 Address prim_value_addr(O1_scratch, java_lang_boxing_object::value_offset_in_bytes(arg_type)); 598 __ load_sized_value(prim_value_addr, O2_scratch, type2aelembytes(arg_type), is_signed_subword_type(arg_type)); 599 if (arg_slots == 2) { 600 __ unimplemented("not yet tested"); 601#ifndef _LP64 602 __ signx(O2_scratch, O3_scratch); // Sign extend 603#endif 604 __ st_long(O2_scratch, Address(O0_argslot, 0)); // Uses O2/O3 on !_LP64 605 } else { 606 __ st_ptr( O2_scratch, Address(O0_argslot, 0)); 607 } 608 } 609 610 if (direct_to_method) { 611 __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop 612 __ verify_oop(G5_method); 613 __ jump_indirect_to(G5_method_fie, O1_scratch); 614 __ delayed()->nop(); 615 } else { 616 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); // target is a methodOop 617 __ verify_oop(G3_method_handle); 618 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 619 } 620 } 621 break; 622 623 case _adapter_retype_only: 624 case _adapter_retype_raw: 625 // Immediately jump to the next MH layer: 626 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); 627 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 628 // This is OK when all parameter types widen. 629 // It is also OK when a return type narrows. 630 break; 631 632 case _adapter_check_cast: 633 { 634 // Temps: 635 Register G5_klass = G5_index; // Interesting AMH data. 636 637 // Check a reference argument before jumping to the next layer of MH: 638 __ ldsw(G3_amh_vmargslot, O0_argslot); 639 Address vmarg = __ argument_address(O0_argslot); 640 641 // What class are we casting to? 642 __ load_heap_oop(G3_amh_argument, G5_klass); // This is a Class object! 643 __ load_heap_oop(Address(G5_klass, java_lang_Class::klass_offset_in_bytes()), G5_klass); 644 645 Label done; 646 __ ld_ptr(vmarg, O1_scratch); 647 __ tst(O1_scratch); 648 __ brx(Assembler::zero, false, Assembler::pn, done); // No cast if null. 649 __ delayed()->nop(); 650 __ load_klass(O1_scratch, O1_scratch); 651 652 // Live at this point: 653 // - G5_klass : klass required by the target method 654 // - O1_scratch : argument klass to test 655 // - G3_method_handle: adapter method handle 656 __ check_klass_subtype(O1_scratch, G5_klass, O0_argslot, O2_scratch, done); 657 658 // If we get here, the type check failed! 659 __ load_heap_oop(G3_amh_argument, O2_required); // required class 660 __ ld_ptr( vmarg, O1_actual); // bad object 661 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O3_scratch); 662 __ delayed()->mov(Bytecodes::_checkcast, O0_code); // who is complaining? 663 664 __ bind(done); 665 // Get the new MH: 666 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); 667 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 668 } 669 break; 670 671 case _adapter_prim_to_prim: 672 case _adapter_ref_to_prim: 673 // Handled completely by optimized cases. 674 __ stop("init_AdapterMethodHandle should not issue this"); 675 break; 676 677 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim 678//case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim 679 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim 680 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim 681 { 682 // Perform an in-place conversion to int or an int subword. 683 __ ldsw(G3_amh_vmargslot, O0_argslot); 684 Address value; 685 Address vmarg = __ argument_address(O0_argslot); 686 bool value_left_justified = false; 687 688 switch (ek) { 689 case _adapter_opt_i2i: 690 value = vmarg; 691 break; 692 case _adapter_opt_l2i: 693 { 694 // just delete the extra slot 695#ifdef _LP64 696 // In V9, longs are given 2 64-bit slots in the interpreter, but the 697 // data is passed in only 1 slot. 698 // Keep the second slot. 699 __ add(Gargs, __ argument_offset(O0_argslot, -1), O0_argslot); 700 remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch); 701 value = Address(O0_argslot, 4); // Get least-significant 32-bit of 64-bit value. 702 vmarg = Address(O0_argslot, Interpreter::stackElementSize); 703#else 704 // Keep the first slot. 705 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); 706 remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch); 707 value = Address(O0_argslot, 0); 708 vmarg = value; 709#endif 710 } 711 break; 712 case _adapter_opt_unboxi: 713 { 714 // Load the value up from the heap. 715 __ ld_ptr(vmarg, O1_scratch); 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(O1_scratch, value_offset); 724 value = Address(O1_scratch, value_offset); 725#ifdef _BIG_ENDIAN 726 // Values stored in objects are packed. 727 value_left_justified = true; 728#endif 729 } 730 break; 731 default: 732 ShouldNotReachHere(); 733 } 734 735 // This check is required on _BIG_ENDIAN 736 Register G5_vminfo = G5_index; 737 __ ldsw(G3_amh_conversion, G5_vminfo); 738 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); 739 740 // Original 32-bit vmdata word must be of this form: 741 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 | 742 __ lduw(value, O1_scratch); 743 if (!value_left_justified) 744 __ sll(O1_scratch, G5_vminfo, O1_scratch); 745 Label zero_extend, done; 746 __ btst(CONV_VMINFO_SIGN_FLAG, G5_vminfo); 747 __ br(Assembler::zero, false, Assembler::pn, zero_extend); 748 __ delayed()->nop(); 749 750 // this path is taken for int->byte, int->short 751 __ sra(O1_scratch, G5_vminfo, O1_scratch); 752 __ ba(false, done); 753 __ delayed()->nop(); 754 755 __ bind(zero_extend); 756 // this is taken for int->char 757 __ srl(O1_scratch, G5_vminfo, O1_scratch); 758 759 __ bind(done); 760 __ st(O1_scratch, vmarg); 761 762 // Get the new MH: 763 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); 764 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 765 } 766 break; 767 768 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim 769 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim 770 { 771 // Perform an in-place int-to-long or ref-to-long conversion. 772 __ ldsw(G3_amh_vmargslot, O0_argslot); 773 774 // On big-endian machine we duplicate the slot and store the MSW 775 // in the first slot. 776 __ add(Gargs, __ argument_offset(O0_argslot, 1), O0_argslot); 777 778 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, O0_argslot, O1_scratch, O2_scratch, G5_index); 779 780 Address arg_lsw(O0_argslot, 0); 781 Address arg_msw(O0_argslot, -Interpreter::stackElementSize); 782 783 switch (ek) { 784 case _adapter_opt_i2l: 785 { 786 __ ldsw(arg_lsw, O2_scratch); // Load LSW 787#ifndef _LP64 788 __ signx(O2_scratch, O3_scratch); // Sign extend 789#endif 790 __ st_long(O2_scratch, arg_msw); // Uses O2/O3 on !_LP64 791 } 792 break; 793 case _adapter_opt_unboxl: 794 { 795 // Load the value up from the heap. 796 __ ld_ptr(arg_lsw, O1_scratch); 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(O1_scratch, value_offset); 800 __ ld_long(Address(O1_scratch, value_offset), O2_scratch); // Uses O2/O3 on !_LP64 801 __ st_long(O2_scratch, arg_msw); 802 } 803 break; 804 default: 805 ShouldNotReachHere(); 806 } 807 808 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); 809 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 810 } 811 break; 812 813 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim 814 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim 815 { 816 // perform an in-place floating primitive conversion 817 __ unimplemented(entry_name(ek)); 818 } 819 break; 820 821 case _adapter_prim_to_ref: 822 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI 823 break; 824 825 case _adapter_swap_args: 826 case _adapter_rot_args: 827 // handled completely by optimized cases 828 __ stop("init_AdapterMethodHandle should not issue this"); 829 break; 830 831 case _adapter_opt_swap_1: 832 case _adapter_opt_swap_2: 833 case _adapter_opt_rot_1_up: 834 case _adapter_opt_rot_1_down: 835 case _adapter_opt_rot_2_up: 836 case _adapter_opt_rot_2_down: 837 { 838 int swap_bytes = 0, rotate = 0; 839 get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate); 840 841 // 'argslot' is the position of the first argument to swap. 842 __ ldsw(G3_amh_vmargslot, O0_argslot); 843 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); 844 845 // 'vminfo' is the second. 846 Register O1_destslot = O1_scratch; 847 __ ldsw(G3_amh_conversion, O1_destslot); 848 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); 849 __ and3(O1_destslot, CONV_VMINFO_MASK, O1_destslot); 850 __ add(Gargs, __ argument_offset(O1_destslot), O1_destslot); 851 852 if (!rotate) { 853 for (int i = 0; i < swap_bytes; i += wordSize) { 854 __ ld_ptr(Address(O0_argslot, i), O2_scratch); 855 __ ld_ptr(Address(O1_destslot, i), O3_scratch); 856 __ st_ptr(O3_scratch, Address(O0_argslot, i)); 857 __ st_ptr(O2_scratch, Address(O1_destslot, i)); 858 } 859 } else { 860 // Save the first chunk, which is going to get overwritten. 861 switch (swap_bytes) { 862 case 4 : __ lduw(Address(O0_argslot, 0), O2_scratch); break; 863 case 16: __ ldx( Address(O0_argslot, 8), O3_scratch); //fall-thru 864 case 8 : __ ldx( Address(O0_argslot, 0), O2_scratch); break; 865 default: ShouldNotReachHere(); 866 } 867 868 if (rotate > 0) { 869 // Rorate upward. 870 __ sub(O0_argslot, swap_bytes, O0_argslot); 871#if ASSERT 872 { 873 // Verify that argslot > destslot, by at least swap_bytes. 874 Label L_ok; 875 __ cmp(O0_argslot, O1_destslot); 876 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, L_ok); 877 __ delayed()->nop(); 878 __ stop("source must be above destination (upward rotation)"); 879 __ bind(L_ok); 880 } 881#endif 882 // Work argslot down to destslot, copying contiguous data upwards. 883 // Pseudo-code: 884 // argslot = src_addr - swap_bytes 885 // destslot = dest_addr 886 // while (argslot >= destslot) { 887 // *(argslot + swap_bytes) = *(argslot + 0); 888 // argslot--; 889 // } 890 Label loop; 891 __ bind(loop); 892 __ ld_ptr(Address(O0_argslot, 0), G5_index); 893 __ st_ptr(G5_index, Address(O0_argslot, swap_bytes)); 894 __ sub(O0_argslot, wordSize, O0_argslot); 895 __ cmp(O0_argslot, O1_destslot); 896 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, loop); 897 __ delayed()->nop(); // FILLME 898 } else { 899 __ add(O0_argslot, swap_bytes, O0_argslot); 900#if ASSERT 901 { 902 // Verify that argslot < destslot, by at least swap_bytes. 903 Label L_ok; 904 __ cmp(O0_argslot, O1_destslot); 905 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok); 906 __ delayed()->nop(); 907 __ stop("source must be above destination (upward rotation)"); 908 __ bind(L_ok); 909 } 910#endif 911 // Work argslot up to destslot, copying contiguous data downwards. 912 // Pseudo-code: 913 // argslot = src_addr + swap_bytes 914 // destslot = dest_addr 915 // while (argslot >= destslot) { 916 // *(argslot - swap_bytes) = *(argslot + 0); 917 // argslot++; 918 // } 919 Label loop; 920 __ bind(loop); 921 __ ld_ptr(Address(O0_argslot, 0), G5_index); 922 __ st_ptr(G5_index, Address(O0_argslot, -swap_bytes)); 923 __ add(O0_argslot, wordSize, O0_argslot); 924 __ cmp(O0_argslot, O1_destslot); 925 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, loop); 926 __ delayed()->nop(); // FILLME 927 } 928 929 // Store the original first chunk into the destination slot, now free. 930 switch (swap_bytes) { 931 case 4 : __ stw(O2_scratch, Address(O1_destslot, 0)); break; 932 case 16: __ stx(O3_scratch, Address(O1_destslot, 8)); // fall-thru 933 case 8 : __ stx(O2_scratch, Address(O1_destslot, 0)); break; 934 default: ShouldNotReachHere(); 935 } 936 } 937 938 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); 939 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 940 } 941 break; 942 943 case _adapter_dup_args: 944 { 945 // 'argslot' is the position of the first argument to duplicate. 946 __ ldsw(G3_amh_vmargslot, O0_argslot); 947 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); 948 949 // 'stack_move' is negative number of words to duplicate. 950 Register G5_stack_move = G5_index; 951 __ ldsw(G3_amh_conversion, G5_stack_move); 952 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move); 953 954 // Remember the old Gargs (argslot[0]). 955 Register O1_oldarg = O1_scratch; 956 __ mov(Gargs, O1_oldarg); 957 958 // Move Gargs down to make room for dups. 959 __ sll_ptr(G5_stack_move, LogBytesPerWord, G5_stack_move); 960 __ add(Gargs, G5_stack_move, Gargs); 961 962 // Compute the new Gargs (argslot[0]). 963 Register O2_newarg = O2_scratch; 964 __ mov(Gargs, O2_newarg); 965 966 // Copy from oldarg[0...] down to newarg[0...] 967 // Pseude-code: 968 // O1_oldarg = old-Gargs 969 // O2_newarg = new-Gargs 970 // O0_argslot = argslot 971 // while (O2_newarg < O1_oldarg) *O2_newarg = *O0_argslot++ 972 Label loop; 973 __ bind(loop); 974 __ ld_ptr(Address(O0_argslot, 0), O3_scratch); 975 __ st_ptr(O3_scratch, Address(O2_newarg, 0)); 976 __ add(O0_argslot, wordSize, O0_argslot); 977 __ add(O2_newarg, wordSize, O2_newarg); 978 __ cmp(O2_newarg, O1_oldarg); 979 __ brx(Assembler::less, false, Assembler::pt, loop); 980 __ delayed()->nop(); // FILLME 981 982 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); 983 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 984 } 985 break; 986 987 case _adapter_drop_args: 988 { 989 // 'argslot' is the position of the first argument to nuke. 990 __ ldsw(G3_amh_vmargslot, O0_argslot); 991 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); 992 993 // 'stack_move' is number of words to drop. 994 Register G5_stack_move = G5_index; 995 __ ldsw(G3_amh_conversion, G5_stack_move); 996 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move); 997 998 remove_arg_slots(_masm, G5_stack_move, O0_argslot, O1_scratch, O2_scratch, O3_scratch); 999 1000 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); 1001 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 1002 } 1003 break; 1004 1005 case _adapter_collect_args: 1006 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI 1007 break; 1008 1009 case _adapter_spread_args: 1010 // Handled completely by optimized cases. 1011 __ stop("init_AdapterMethodHandle should not issue this"); 1012 break; 1013 1014 case _adapter_opt_spread_0: 1015 case _adapter_opt_spread_1: 1016 case _adapter_opt_spread_more: 1017 { 1018 // spread an array out into a group of arguments 1019 __ unimplemented(entry_name(ek)); 1020 } 1021 break; 1022 1023 case _adapter_flyby: 1024 case _adapter_ricochet: 1025 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI 1026 break; 1027 1028 default: 1029 ShouldNotReachHere(); 1030 } 1031 1032 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry); 1033 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI 1034 1035 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie)); 1036} 1037