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 "incls/_precompiled.incl" 26 #include "incls/_methodHandles_sparc.cpp.incl" 27 28 #define __ _masm-> 29 30 #ifdef PRODUCT 31 #define BLOCK_COMMENT(str) /* nothing */ 32 #else 33 #define BLOCK_COMMENT(str) __ block_comment(str) 34 #endif 35 36 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") 37 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 71 // Code generation 72 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) { 73 // I5_savedSP: sender SP (must preserve) 74 // G4 (Gargs): incoming argument list (must preserve) 75 // G5_method: invoke methodOop; becomes method type. 76 // G3_method_handle: receiver method handle (must load from sp[MethodTypeForm.vmslots]) 77 // O0, O1: garbage temps, blown away 78 Register O0_argslot = O0; 79 Register O1_scratch = O1; 80 81 // emit WrongMethodType path first, to enable back-branch from main path 82 Label wrong_method_type; 83 __ bind(wrong_method_type); 84 __ jump_to(AddressLiteral(Interpreter::throw_WrongMethodType_entry()), O1_scratch); 85 __ delayed()->nop(); 86 87 // here's where control starts out: 88 __ align(CodeEntryAlignment); 89 address entry_point = __ pc(); 90 91 // fetch the MethodType from the method handle into G5_method_type 92 { 93 Register tem = G5_method; 94 assert(tem == G5_method_type, "yes, it's the same register"); 95 for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) { 96 __ ld_ptr(Address(tem, *pchase), G5_method_type); 97 } 98 } 99 100 // given the MethodType, find out where the MH argument is buried 101 __ load_heap_oop(Address(G5_method_type, __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, O1_scratch)), O0_argslot); 102 __ ldsw( Address(O0_argslot, __ delayed_value(java_dyn_MethodTypeForm::vmslots_offset_in_bytes, O1_scratch)), O0_argslot); 103 __ ld_ptr(__ argument_address(O0_argslot), G3_method_handle); 104 105 __ check_method_handle_type(G5_method_type, G3_method_handle, O1_scratch, wrong_method_type); 106 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 107 108 return entry_point; 109 } 110 111 112 #ifdef ASSERT 113 static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, Register temp_reg, const char* error_message) { 114 // Verify that argslot lies within (Gargs, FP]. 115 Label L_ok, L_bad; 116 BLOCK_COMMENT("{ verify_argslot"); 117 #ifdef _LP64 118 __ add(FP, STACK_BIAS, temp_reg); 119 __ cmp(argslot_reg, temp_reg); 120 #else 121 __ cmp(argslot_reg, FP); 122 #endif 123 __ brx(Assembler::greaterUnsigned, false, Assembler::pn, L_bad); 124 __ delayed()->nop(); 125 __ cmp(Gargs, argslot_reg); 126 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok); 127 __ delayed()->nop(); 128 __ bind(L_bad); 129 __ stop(error_message); 130 __ bind(L_ok); 131 BLOCK_COMMENT("} verify_argslot"); 132 } 133 #endif 134 135 136 // Helper to insert argument slots into the stack. 137 // arg_slots must be a multiple of stack_move_unit() and <= 0 138 void MethodHandles::insert_arg_slots(MacroAssembler* _masm, 139 RegisterOrConstant arg_slots, 140 int arg_mask, 141 Register argslot_reg, 142 Register temp_reg, Register temp2_reg, Register temp3_reg) { 143 assert(temp3_reg != noreg, "temp3 required"); 144 assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg, 145 (!arg_slots.is_register() ? Gargs : arg_slots.as_register())); 146 147 #ifdef ASSERT 148 verify_argslot(_masm, argslot_reg, temp_reg, "insertion point must fall within current frame"); 149 if (arg_slots.is_register()) { 150 Label L_ok, L_bad; 151 __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD); 152 __ br(Assembler::greater, false, Assembler::pn, L_bad); 153 __ delayed()->nop(); 154 __ btst(-stack_move_unit() - 1, arg_slots.as_register()); 155 __ br(Assembler::zero, false, Assembler::pt, L_ok); 156 __ delayed()->nop(); 157 __ bind(L_bad); 158 __ stop("assert arg_slots <= 0 and clear low bits"); 159 __ bind(L_ok); 160 } else { 161 assert(arg_slots.as_constant() <= 0, ""); 162 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); 163 } 164 #endif // ASSERT 165 166 #ifdef _LP64 167 if (arg_slots.is_register()) { 168 // Was arg_slots register loaded as signed int? 169 Label L_ok; 170 __ sll(arg_slots.as_register(), BitsPerInt, temp_reg); 171 __ sra(temp_reg, BitsPerInt, temp_reg); 172 __ cmp(arg_slots.as_register(), temp_reg); 173 __ br(Assembler::equal, false, Assembler::pt, L_ok); 174 __ delayed()->nop(); 175 __ stop("arg_slots register not loaded as signed int"); 176 __ bind(L_ok); 177 } 178 #endif 179 180 // Make space on the stack for the inserted argument(s). 181 // Then pull down everything shallower than argslot_reg. 182 // The stacked return address gets pulled down with everything else. 183 // That is, copy [sp, argslot) downward by -size words. In pseudo-code: 184 // sp -= size; 185 // for (temp = sp + size; temp < argslot; temp++) 186 // temp[-size] = temp[0] 187 // argslot -= size; 188 BLOCK_COMMENT("insert_arg_slots {"); 189 RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg); 190 191 // Keep the stack pointer 2*wordSize aligned. 192 const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1); 193 RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg); 194 __ add(SP, masked_offset, SP); 195 196 __ mov(Gargs, temp_reg); // source pointer for copy 197 __ add(Gargs, offset, Gargs); 198 199 { 200 Label loop; 201 __ BIND(loop); 202 // pull one word down each time through the loop 203 __ ld_ptr(Address(temp_reg, 0), temp2_reg); 204 __ st_ptr(temp2_reg, Address(temp_reg, offset)); 205 __ add(temp_reg, wordSize, temp_reg); 206 __ cmp(temp_reg, argslot_reg); 207 __ brx(Assembler::less, false, Assembler::pt, loop); 208 __ delayed()->nop(); // FILLME 209 } 210 211 // Now move the argslot down, to point to the opened-up space. 212 __ add(argslot_reg, offset, argslot_reg); 213 BLOCK_COMMENT("} insert_arg_slots"); 214 } 215 216 217 // Helper to remove argument slots from the stack. 218 // arg_slots must be a multiple of stack_move_unit() and >= 0 219 void MethodHandles::remove_arg_slots(MacroAssembler* _masm, 220 RegisterOrConstant arg_slots, 221 Register argslot_reg, 222 Register temp_reg, Register temp2_reg, Register temp3_reg) { 223 assert(temp3_reg != noreg, "temp3 required"); 224 assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg, 225 (!arg_slots.is_register() ? Gargs : arg_slots.as_register())); 226 227 RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg); 228 229 #ifdef ASSERT 230 // Verify that [argslot..argslot+size) lies within (Gargs, FP). 231 __ add(argslot_reg, offset, temp2_reg); 232 verify_argslot(_masm, temp2_reg, temp_reg, "deleted argument(s) must fall within current frame"); 233 if (arg_slots.is_register()) { 234 Label L_ok, L_bad; 235 __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD); 236 __ br(Assembler::less, false, Assembler::pn, L_bad); 237 __ delayed()->nop(); 238 __ btst(-stack_move_unit() - 1, arg_slots.as_register()); 239 __ br(Assembler::zero, false, Assembler::pt, L_ok); 240 __ delayed()->nop(); 241 __ bind(L_bad); 242 __ stop("assert arg_slots >= 0 and clear low bits"); 243 __ bind(L_ok); 244 } else { 245 assert(arg_slots.as_constant() >= 0, ""); 246 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); 247 } 248 #endif // ASSERT 249 250 BLOCK_COMMENT("remove_arg_slots {"); 251 // Pull up everything shallower than argslot. 252 // Then remove the excess space on the stack. 253 // The stacked return address gets pulled up with everything else. 254 // That is, copy [sp, argslot) upward by size words. In pseudo-code: 255 // for (temp = argslot-1; temp >= sp; --temp) 256 // temp[size] = temp[0] 257 // argslot += size; 258 // sp += size; 259 __ sub(argslot_reg, wordSize, temp_reg); // source pointer for copy 260 { 261 Label loop; 262 __ BIND(loop); 263 // pull one word up each time through the loop 264 __ ld_ptr(Address(temp_reg, 0), temp2_reg); 265 __ st_ptr(temp2_reg, Address(temp_reg, offset)); 266 __ sub(temp_reg, wordSize, temp_reg); 267 __ cmp(temp_reg, Gargs); 268 __ brx(Assembler::greaterEqual, false, Assembler::pt, loop); 269 __ delayed()->nop(); // FILLME 270 } 271 272 // Now move the argslot up, to point to the just-copied block. 273 __ add(Gargs, offset, Gargs); 274 // And adjust the argslot address to point at the deletion point. 275 __ add(argslot_reg, offset, argslot_reg); 276 277 // Keep the stack pointer 2*wordSize aligned. 278 const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1); 279 RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg); 280 __ add(SP, masked_offset, SP); 281 BLOCK_COMMENT("} remove_arg_slots"); 282 } 283 284 285 #ifndef PRODUCT 286 extern "C" void print_method_handle(oop mh); 287 void trace_method_handle_stub(const char* adaptername, 288 oopDesc* mh) { 289 printf("MH %s mh="INTPTR_FORMAT"\n", adaptername, (intptr_t) mh); 290 print_method_handle(mh); 291 } 292 void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) { 293 if (!TraceMethodHandles) return; 294 BLOCK_COMMENT("trace_method_handle {"); 295 // save: Gargs, O5_savedSP 296 __ save_frame(16); 297 __ set((intptr_t) adaptername, O0); 298 __ mov(G3_method_handle, O1); 299 __ mov(G3_method_handle, L3); 300 __ mov(Gargs, L4); 301 __ mov(G5_method_type, L5); 302 __ call_VM_leaf(L7, CAST_FROM_FN_PTR(address, trace_method_handle_stub)); 303 304 __ mov(L3, G3_method_handle); 305 __ mov(L4, Gargs); 306 __ mov(L5, G5_method_type); 307 __ restore(); 308 BLOCK_COMMENT("} trace_method_handle"); 309 } 310 #endif // PRODUCT 311 312 // which conversion op types are implemented here? 313 int MethodHandles::adapter_conversion_ops_supported_mask() { 314 return ((1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_ONLY) 315 |(1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW) 316 |(1<<sun_dyn_AdapterMethodHandle::OP_CHECK_CAST) 317 |(1<<sun_dyn_AdapterMethodHandle::OP_PRIM_TO_PRIM) 318 |(1<<sun_dyn_AdapterMethodHandle::OP_REF_TO_PRIM) 319 |(1<<sun_dyn_AdapterMethodHandle::OP_SWAP_ARGS) 320 |(1<<sun_dyn_AdapterMethodHandle::OP_ROT_ARGS) 321 |(1<<sun_dyn_AdapterMethodHandle::OP_DUP_ARGS) 322 |(1<<sun_dyn_AdapterMethodHandle::OP_DROP_ARGS) 323 //|(1<<sun_dyn_AdapterMethodHandle::OP_SPREAD_ARGS) //BUG! 324 ); 325 // FIXME: MethodHandlesTest gets a crash if we enable OP_SPREAD_ARGS. 326 } 327 328 //------------------------------------------------------------------------------ 329 // MethodHandles::generate_method_handle_stub 330 // 331 // Generate an "entry" field for a method handle. 332 // This determines how the method handle will respond to calls. 333 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) { 334 // Here is the register state during an interpreted call, 335 // as set up by generate_method_handle_interpreter_entry(): 336 // - G5: garbage temp (was MethodHandle.invoke methodOop, unused) 337 // - G3: receiver method handle 338 // - O5_savedSP: sender SP (must preserve) 339 340 Register O0_argslot = O0; 341 Register O1_scratch = O1; 342 Register O2_scratch = O2; 343 Register O3_scratch = O3; 344 Register G5_index = G5; 345 346 guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets"); 347 348 // Some handy addresses: 349 Address G5_method_fie( G5_method, in_bytes(methodOopDesc::from_interpreted_offset())); 350 351 Address G3_mh_vmtarget( G3_method_handle, java_dyn_MethodHandle::vmtarget_offset_in_bytes()); 352 353 Address G3_dmh_vmindex( G3_method_handle, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes()); 354 355 Address G3_bmh_vmargslot( G3_method_handle, sun_dyn_BoundMethodHandle::vmargslot_offset_in_bytes()); 356 Address G3_bmh_argument( G3_method_handle, sun_dyn_BoundMethodHandle::argument_offset_in_bytes()); 357 358 Address G3_amh_vmargslot( G3_method_handle, sun_dyn_AdapterMethodHandle::vmargslot_offset_in_bytes()); 359 Address G3_amh_argument ( G3_method_handle, sun_dyn_AdapterMethodHandle::argument_offset_in_bytes()); 360 Address G3_amh_conversion(G3_method_handle, sun_dyn_AdapterMethodHandle::conversion_offset_in_bytes()); 361 362 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); 363 364 if (have_entry(ek)) { 365 __ nop(); // empty stubs make SG sick 366 return; 367 } 368 369 address interp_entry = __ pc(); 370 371 trace_method_handle(_masm, entry_name(ek)); 372 373 switch ((int) ek) { 374 case _raise_exception: 375 { 376 // Not a real MH entry, but rather shared code for raising an 377 // exception. Extra local arguments are passed in scratch 378 // registers, as required type in O3, failing object (or NULL) 379 // in O2, failing bytecode type in O1. 380 381 __ mov(O5_savedSP, SP); // Cut the stack back to where the caller started. 382 383 // Push arguments as if coming from the interpreter. 384 Register O0_scratch = O0_argslot; 385 int stackElementSize = Interpreter::stackElementSize; 386 387 // Make space on the stack for the arguments and set Gargs 388 // correctly. 389 __ sub(SP, 4*stackElementSize, SP); // Keep stack aligned. 390 __ add(SP, (frame::varargs_offset)*wordSize - 1*Interpreter::stackElementSize + STACK_BIAS + BytesPerWord, Gargs); 391 392 // void raiseException(int code, Object actual, Object required) 393 __ st( O1_scratch, Address(Gargs, 2*stackElementSize)); // code 394 __ st_ptr(O2_scratch, Address(Gargs, 1*stackElementSize)); // actual 395 __ st_ptr(O3_scratch, Address(Gargs, 0*stackElementSize)); // required 396 397 Label no_method; 398 // FIXME: fill in _raise_exception_method with a suitable sun.dyn method 399 __ set(AddressLiteral((address) &_raise_exception_method), G5_method); 400 __ ld_ptr(Address(G5_method, 0), G5_method); 401 __ tst(G5_method); 402 __ brx(Assembler::zero, false, Assembler::pn, no_method); 403 __ delayed()->nop(); 404 405 int jobject_oop_offset = 0; 406 __ ld_ptr(Address(G5_method, jobject_oop_offset), G5_method); 407 __ tst(G5_method); 408 __ brx(Assembler::zero, false, Assembler::pn, no_method); 409 __ delayed()->nop(); 410 411 __ verify_oop(G5_method); 412 __ jump_indirect_to(G5_method_fie, O1_scratch); 413 __ delayed()->nop(); 414 415 // If we get here, the Java runtime did not do its job of creating the exception. 416 // Do something that is at least causes a valid throw from the interpreter. 417 __ bind(no_method); 418 __ unimplemented("_raise_exception no method"); 419 } 420 break; 421 422 case _invokestatic_mh: 423 case _invokespecial_mh: 424 { 425 __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop 426 __ verify_oop(G5_method); 427 // Same as TemplateTable::invokestatic or invokespecial, 428 // minus the CP setup and profiling: 429 if (ek == _invokespecial_mh) { 430 // Must load & check the first argument before entering the target method. 431 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); 432 __ ld_ptr(__ argument_address(O0_argslot), G3_method_handle); 433 __ null_check(G3_method_handle); 434 __ verify_oop(G3_method_handle); 435 } 436 __ jump_indirect_to(G5_method_fie, O1_scratch); 437 __ delayed()->nop(); 438 } 439 break; 440 441 case _invokevirtual_mh: 442 { 443 // Same as TemplateTable::invokevirtual, 444 // minus the CP setup and profiling: 445 446 // Pick out the vtable index and receiver offset from the MH, 447 // and then we can discard it: 448 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); 449 __ ldsw(G3_dmh_vmindex, G5_index); 450 // Note: The verifier allows us to ignore G3_mh_vmtarget. 451 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle); 452 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes()); 453 454 // Get receiver klass: 455 Register O0_klass = O0_argslot; 456 __ load_klass(G3_method_handle, O0_klass); 457 __ verify_oop(O0_klass); 458 459 // Get target methodOop & entry point: 460 const int base = instanceKlass::vtable_start_offset() * wordSize; 461 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); 462 463 __ sll_ptr(G5_index, LogBytesPerWord, G5_index); 464 __ add(O0_klass, G5_index, O0_klass); 465 Address vtable_entry_addr(O0_klass, base + vtableEntry::method_offset_in_bytes()); 466 __ ld_ptr(vtable_entry_addr, G5_method); 467 468 __ verify_oop(G5_method); 469 __ jump_indirect_to(G5_method_fie, O1_scratch); 470 __ delayed()->nop(); 471 } 472 break; 473 474 case _invokeinterface_mh: 475 { 476 // Same as TemplateTable::invokeinterface, 477 // minus the CP setup and profiling: 478 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); 479 Register O1_intf = O1_scratch; 480 __ load_heap_oop(G3_mh_vmtarget, O1_intf); 481 __ ldsw(G3_dmh_vmindex, G5_index); 482 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle); 483 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes()); 484 485 // Get receiver klass: 486 Register O0_klass = O0_argslot; 487 __ load_klass(G3_method_handle, O0_klass); 488 __ verify_oop(O0_klass); 489 490 // Get interface: 491 Label no_such_interface; 492 __ verify_oop(O1_intf); 493 __ lookup_interface_method(O0_klass, O1_intf, 494 // Note: next two args must be the same: 495 G5_index, G5_method, 496 O2_scratch, 497 O3_scratch, 498 no_such_interface); 499 500 __ verify_oop(G5_method); 501 __ jump_indirect_to(G5_method_fie, O1_scratch); 502 __ delayed()->nop(); 503 504 __ bind(no_such_interface); 505 // Throw an exception. 506 // For historical reasons, it will be IncompatibleClassChangeError. 507 __ unimplemented("not tested yet"); 508 __ ld_ptr(Address(O1_intf, java_mirror_offset), O3_scratch); // required interface 509 __ mov(O0_klass, O2_scratch); // bad receiver 510 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O0_argslot); 511 __ delayed()->mov(Bytecodes::_invokeinterface, O1_scratch); // who is complaining? 512 } 513 break; 514 515 case _bound_ref_mh: 516 case _bound_int_mh: 517 case _bound_long_mh: 518 case _bound_ref_direct_mh: 519 case _bound_int_direct_mh: 520 case _bound_long_direct_mh: 521 { 522 const bool direct_to_method = (ek >= _bound_ref_direct_mh); 523 BasicType arg_type = T_ILLEGAL; 524 int arg_mask = _INSERT_NO_MASK; 525 int arg_slots = -1; 526 get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots); 527 528 // Make room for the new argument: 529 __ ldsw(G3_bmh_vmargslot, O0_argslot); 530 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); 531 532 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, O0_argslot, O1_scratch, O2_scratch, G5_index); 533 534 // Store bound argument into the new stack slot: 535 __ load_heap_oop(G3_bmh_argument, O1_scratch); 536 if (arg_type == T_OBJECT) { 537 __ st_ptr(O1_scratch, Address(O0_argslot, 0)); 538 } else { 539 Address prim_value_addr(O1_scratch, java_lang_boxing_object::value_offset_in_bytes(arg_type)); 540 __ load_sized_value(prim_value_addr, O2_scratch, type2aelembytes(arg_type), is_signed_subword_type(arg_type)); 541 if (arg_slots == 2) { 542 __ unimplemented("not yet tested"); 543 #ifndef _LP64 544 __ signx(O2_scratch, O3_scratch); // Sign extend 545 #endif 546 __ st_long(O2_scratch, Address(O0_argslot, 0)); // Uses O2/O3 on !_LP64 547 } else { 548 __ st_ptr( O2_scratch, Address(O0_argslot, 0)); 549 } 550 } 551 552 if (direct_to_method) { 553 __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop 554 __ verify_oop(G5_method); 555 __ jump_indirect_to(G5_method_fie, O1_scratch); 556 __ delayed()->nop(); 557 } else { 558 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); // target is a methodOop 559 __ verify_oop(G3_method_handle); 560 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 561 } 562 } 563 break; 564 565 case _adapter_retype_only: 566 case _adapter_retype_raw: 567 // Immediately jump to the next MH layer: 568 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); 569 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 570 // This is OK when all parameter types widen. 571 // It is also OK when a return type narrows. 572 break; 573 574 case _adapter_check_cast: 575 { 576 // Temps: 577 Register G5_klass = G5_index; // Interesting AMH data. 578 579 // Check a reference argument before jumping to the next layer of MH: 580 __ ldsw(G3_amh_vmargslot, O0_argslot); 581 Address vmarg = __ argument_address(O0_argslot); 582 583 // What class are we casting to? 584 __ load_heap_oop(G3_amh_argument, G5_klass); // This is a Class object! 585 __ load_heap_oop(Address(G5_klass, java_lang_Class::klass_offset_in_bytes()), G5_klass); 586 587 Label done; 588 __ ld_ptr(vmarg, O1_scratch); 589 __ tst(O1_scratch); 590 __ brx(Assembler::zero, false, Assembler::pn, done); // No cast if null. 591 __ delayed()->nop(); 592 __ load_klass(O1_scratch, O1_scratch); 593 594 // Live at this point: 595 // - G5_klass : klass required by the target method 596 // - O1_scratch : argument klass to test 597 // - G3_method_handle: adapter method handle 598 __ check_klass_subtype(O1_scratch, G5_klass, O0_argslot, O2_scratch, done); 599 600 // If we get here, the type check failed! 601 __ ldsw(G3_amh_vmargslot, O0_argslot); // reload argslot field 602 __ load_heap_oop(G3_amh_argument, O3_scratch); // required class 603 __ ld_ptr(vmarg, O2_scratch); // bad object 604 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O0_argslot); 605 __ delayed()->mov(Bytecodes::_checkcast, O1_scratch); // who is complaining? 606 607 __ bind(done); 608 // Get the new MH: 609 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); 610 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 611 } 612 break; 613 614 case _adapter_prim_to_prim: 615 case _adapter_ref_to_prim: 616 // Handled completely by optimized cases. 617 __ stop("init_AdapterMethodHandle should not issue this"); 618 break; 619 620 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim 621 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim 622 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim 623 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim 624 { 625 // Perform an in-place conversion to int or an int subword. 626 __ ldsw(G3_amh_vmargslot, O0_argslot); 627 Address vmarg = __ argument_address(O0_argslot); 628 Address value; 629 bool value_left_justified = false; 630 631 switch (ek) { 632 case _adapter_opt_i2i: 633 case _adapter_opt_l2i: 634 __ unimplemented(entry_name(ek)); 635 value = vmarg; 636 break; 637 case _adapter_opt_unboxi: 638 { 639 // Load the value up from the heap. 640 __ ld_ptr(vmarg, O1_scratch); 641 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); 642 #ifdef ASSERT 643 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { 644 if (is_subword_type(BasicType(bt))) 645 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), ""); 646 } 647 #endif 648 __ null_check(O1_scratch, value_offset); 649 value = Address(O1_scratch, value_offset); 650 #ifdef _BIG_ENDIAN 651 // Values stored in objects are packed. 652 value_left_justified = true; 653 #endif 654 } 655 break; 656 default: 657 ShouldNotReachHere(); 658 } 659 660 // This check is required on _BIG_ENDIAN 661 Register G5_vminfo = G5_index; 662 __ ldsw(G3_amh_conversion, G5_vminfo); 663 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); 664 665 // Original 32-bit vmdata word must be of this form: 666 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 | 667 __ lduw(value, O1_scratch); 668 if (!value_left_justified) 669 __ sll(O1_scratch, G5_vminfo, O1_scratch); 670 Label zero_extend, done; 671 __ btst(CONV_VMINFO_SIGN_FLAG, G5_vminfo); 672 __ br(Assembler::zero, false, Assembler::pn, zero_extend); 673 __ delayed()->nop(); 674 675 // this path is taken for int->byte, int->short 676 __ sra(O1_scratch, G5_vminfo, O1_scratch); 677 __ ba(false, done); 678 __ delayed()->nop(); 679 680 __ bind(zero_extend); 681 // this is taken for int->char 682 __ srl(O1_scratch, G5_vminfo, O1_scratch); 683 684 __ bind(done); 685 __ st(O1_scratch, vmarg); 686 687 // Get the new MH: 688 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); 689 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 690 } 691 break; 692 693 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim 694 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim 695 { 696 // Perform an in-place int-to-long or ref-to-long conversion. 697 __ ldsw(G3_amh_vmargslot, O0_argslot); 698 699 // On big-endian machine we duplicate the slot and store the MSW 700 // in the first slot. 701 __ add(Gargs, __ argument_offset(O0_argslot, 1), O0_argslot); 702 703 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, O0_argslot, O1_scratch, O2_scratch, G5_index); 704 705 Address arg_lsw(O0_argslot, 0); 706 Address arg_msw(O0_argslot, -Interpreter::stackElementSize); 707 708 switch (ek) { 709 case _adapter_opt_i2l: 710 { 711 __ ldsw(arg_lsw, O2_scratch); // Load LSW 712 #ifndef _LP64 713 __ signx(O2_scratch, O3_scratch); // Sign extend 714 #endif 715 __ st_long(O2_scratch, arg_msw); // Uses O2/O3 on !_LP64 716 } 717 break; 718 case _adapter_opt_unboxl: 719 { 720 // Load the value up from the heap. 721 __ ld_ptr(arg_lsw, O1_scratch); 722 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG); 723 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), ""); 724 __ null_check(O1_scratch, value_offset); 725 __ ld_long(Address(O1_scratch, value_offset), O2_scratch); // Uses O2/O3 on !_LP64 726 __ st_long(O2_scratch, arg_msw); 727 } 728 break; 729 default: 730 ShouldNotReachHere(); 731 } 732 733 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); 734 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 735 } 736 break; 737 738 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim 739 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim 740 { 741 // perform an in-place floating primitive conversion 742 __ unimplemented(entry_name(ek)); 743 } 744 break; 745 746 case _adapter_prim_to_ref: 747 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI 748 break; 749 750 case _adapter_swap_args: 751 case _adapter_rot_args: 752 // handled completely by optimized cases 753 __ stop("init_AdapterMethodHandle should not issue this"); 754 break; 755 756 case _adapter_opt_swap_1: 757 case _adapter_opt_swap_2: 758 case _adapter_opt_rot_1_up: 759 case _adapter_opt_rot_1_down: 760 case _adapter_opt_rot_2_up: 761 case _adapter_opt_rot_2_down: 762 { 763 int swap_bytes = 0, rotate = 0; 764 get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate); 765 766 // 'argslot' is the position of the first argument to swap. 767 __ ldsw(G3_amh_vmargslot, O0_argslot); 768 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); 769 770 // 'vminfo' is the second. 771 Register O1_destslot = O1_scratch; 772 __ ldsw(G3_amh_conversion, O1_destslot); 773 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); 774 __ and3(O1_destslot, CONV_VMINFO_MASK, O1_destslot); 775 __ add(Gargs, __ argument_offset(O1_destslot), O1_destslot); 776 777 if (!rotate) { 778 for (int i = 0; i < swap_bytes; i += wordSize) { 779 __ ld_ptr(Address(O0_argslot, i), O2_scratch); 780 __ ld_ptr(Address(O1_destslot, i), O3_scratch); 781 __ st_ptr(O3_scratch, Address(O0_argslot, i)); 782 __ st_ptr(O2_scratch, Address(O1_destslot, i)); 783 } 784 } else { 785 // Save the first chunk, which is going to get overwritten. 786 switch (swap_bytes) { 787 case 4 : __ lduw(Address(O0_argslot, 0), O2_scratch); break; 788 case 16: __ ldx( Address(O0_argslot, 8), O3_scratch); //fall-thru 789 case 8 : __ ldx( Address(O0_argslot, 0), O2_scratch); break; 790 default: ShouldNotReachHere(); 791 } 792 793 if (rotate > 0) { 794 // Rorate upward. 795 __ sub(O0_argslot, swap_bytes, O0_argslot); 796 #if ASSERT 797 { 798 // Verify that argslot > destslot, by at least swap_bytes. 799 Label L_ok; 800 __ cmp(O0_argslot, O1_destslot); 801 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, L_ok); 802 __ delayed()->nop(); 803 __ stop("source must be above destination (upward rotation)"); 804 __ bind(L_ok); 805 } 806 #endif 807 // Work argslot down to destslot, copying contiguous data upwards. 808 // Pseudo-code: 809 // argslot = src_addr - swap_bytes 810 // destslot = dest_addr 811 // while (argslot >= destslot) { 812 // *(argslot + swap_bytes) = *(argslot + 0); 813 // argslot--; 814 // } 815 Label loop; 816 __ bind(loop); 817 __ ld_ptr(Address(O0_argslot, 0), G5_index); 818 __ st_ptr(G5_index, Address(O0_argslot, swap_bytes)); 819 __ sub(O0_argslot, wordSize, O0_argslot); 820 __ cmp(O0_argslot, O1_destslot); 821 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, loop); 822 __ delayed()->nop(); // FILLME 823 } else { 824 __ add(O0_argslot, swap_bytes, O0_argslot); 825 #if ASSERT 826 { 827 // Verify that argslot < destslot, by at least swap_bytes. 828 Label L_ok; 829 __ cmp(O0_argslot, O1_destslot); 830 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok); 831 __ delayed()->nop(); 832 __ stop("source must be above destination (upward rotation)"); 833 __ bind(L_ok); 834 } 835 #endif 836 // Work argslot up to destslot, copying contiguous data downwards. 837 // Pseudo-code: 838 // argslot = src_addr + swap_bytes 839 // destslot = dest_addr 840 // while (argslot >= destslot) { 841 // *(argslot - swap_bytes) = *(argslot + 0); 842 // argslot++; 843 // } 844 Label loop; 845 __ bind(loop); 846 __ ld_ptr(Address(O0_argslot, 0), G5_index); 847 __ st_ptr(G5_index, Address(O0_argslot, -swap_bytes)); 848 __ add(O0_argslot, wordSize, O0_argslot); 849 __ cmp(O0_argslot, O1_destslot); 850 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, loop); 851 __ delayed()->nop(); // FILLME 852 } 853 854 // Store the original first chunk into the destination slot, now free. 855 switch (swap_bytes) { 856 case 4 : __ stw(O2_scratch, Address(O1_destslot, 0)); break; 857 case 16: __ stx(O3_scratch, Address(O1_destslot, 8)); // fall-thru 858 case 8 : __ stx(O2_scratch, Address(O1_destslot, 0)); break; 859 default: ShouldNotReachHere(); 860 } 861 } 862 863 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); 864 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 865 } 866 break; 867 868 case _adapter_dup_args: 869 { 870 // 'argslot' is the position of the first argument to duplicate. 871 __ ldsw(G3_amh_vmargslot, O0_argslot); 872 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); 873 874 // 'stack_move' is negative number of words to duplicate. 875 Register G5_stack_move = G5_index; 876 __ ldsw(G3_amh_conversion, G5_stack_move); 877 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move); 878 879 // Remember the old Gargs (argslot[0]). 880 Register O1_oldarg = O1_scratch; 881 __ mov(Gargs, O1_oldarg); 882 883 // Move Gargs down to make room for dups. 884 __ sll_ptr(G5_stack_move, LogBytesPerWord, G5_stack_move); 885 __ add(Gargs, G5_stack_move, Gargs); 886 887 // Compute the new Gargs (argslot[0]). 888 Register O2_newarg = O2_scratch; 889 __ mov(Gargs, O2_newarg); 890 891 // Copy from oldarg[0...] down to newarg[0...] 892 // Pseude-code: 893 // O1_oldarg = old-Gargs 894 // O2_newarg = new-Gargs 895 // O0_argslot = argslot 896 // while (O2_newarg < O1_oldarg) *O2_newarg = *O0_argslot++ 897 Label loop; 898 __ bind(loop); 899 __ ld_ptr(Address(O0_argslot, 0), O3_scratch); 900 __ st_ptr(O3_scratch, Address(O2_newarg, 0)); 901 __ add(O0_argslot, wordSize, O0_argslot); 902 __ add(O2_newarg, wordSize, O2_newarg); 903 __ cmp(O2_newarg, O1_oldarg); 904 __ brx(Assembler::less, false, Assembler::pt, loop); 905 __ delayed()->nop(); // FILLME 906 907 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); 908 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 909 } 910 break; 911 912 case _adapter_drop_args: 913 { 914 // 'argslot' is the position of the first argument to nuke. 915 __ ldsw(G3_amh_vmargslot, O0_argslot); 916 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); 917 918 // 'stack_move' is number of words to drop. 919 Register G5_stack_move = G5_index; 920 __ ldsw(G3_amh_conversion, G5_stack_move); 921 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move); 922 923 remove_arg_slots(_masm, G5_stack_move, O0_argslot, O1_scratch, O2_scratch, O3_scratch); 924 925 __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); 926 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); 927 } 928 break; 929 930 case _adapter_collect_args: 931 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI 932 break; 933 934 case _adapter_spread_args: 935 // Handled completely by optimized cases. 936 __ stop("init_AdapterMethodHandle should not issue this"); 937 break; 938 939 case _adapter_opt_spread_0: 940 case _adapter_opt_spread_1: 941 case _adapter_opt_spread_more: 942 { 943 // spread an array out into a group of arguments 944 __ unimplemented(entry_name(ek)); 945 } 946 break; 947 948 case _adapter_flyby: 949 case _adapter_ricochet: 950 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI 951 break; 952 953 default: 954 ShouldNotReachHere(); 955 } 956 957 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry); 958 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI 959 960 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie)); 961 }