1 /* 2 * Copyright (c) 2000, 2011, 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 "c1/c1_Compilation.hpp" 27 #include "c1/c1_LIRAssembler.hpp" 28 #include "c1/c1_MacroAssembler.hpp" 29 #include "c1/c1_Runtime1.hpp" 30 #include "c1/c1_ValueStack.hpp" 31 #include "ci/ciArrayKlass.hpp" 32 #include "ci/ciInstance.hpp" 33 #include "gc_interface/collectedHeap.hpp" 34 #include "memory/barrierSet.hpp" 35 #include "memory/cardTableModRefBS.hpp" 36 #include "nativeInst_sparc.hpp" 37 #include "oops/objArrayKlass.hpp" 38 #include "runtime/sharedRuntime.hpp" 39 40 #define __ _masm-> 41 42 43 //------------------------------------------------------------ 44 45 46 bool LIR_Assembler::is_small_constant(LIR_Opr opr) { 47 if (opr->is_constant()) { 48 LIR_Const* constant = opr->as_constant_ptr(); 49 switch (constant->type()) { 50 case T_INT: { 51 jint value = constant->as_jint(); 52 return Assembler::is_simm13(value); 53 } 54 55 default: 56 return false; 57 } 58 } 59 return false; 60 } 61 62 63 bool LIR_Assembler::is_single_instruction(LIR_Op* op) { 64 switch (op->code()) { 65 case lir_null_check: 66 return true; 67 68 69 case lir_add: 70 case lir_ushr: 71 case lir_shr: 72 case lir_shl: 73 // integer shifts and adds are always one instruction 74 return op->result_opr()->is_single_cpu(); 75 76 77 case lir_move: { 78 LIR_Op1* op1 = op->as_Op1(); 79 LIR_Opr src = op1->in_opr(); 80 LIR_Opr dst = op1->result_opr(); 81 82 if (src == dst) { 83 NEEDS_CLEANUP; 84 // this works around a problem where moves with the same src and dst 85 // end up in the delay slot and then the assembler swallows the mov 86 // since it has no effect and then it complains because the delay slot 87 // is empty. returning false stops the optimizer from putting this in 88 // the delay slot 89 return false; 90 } 91 92 // don't put moves involving oops into the delay slot since the VerifyOops code 93 // will make it much larger than a single instruction. 94 if (VerifyOops) { 95 return false; 96 } 97 98 if (src->is_double_cpu() || dst->is_double_cpu() || op1->patch_code() != lir_patch_none || 99 ((src->is_double_fpu() || dst->is_double_fpu()) && op1->move_kind() != lir_move_normal)) { 100 return false; 101 } 102 103 if (UseCompressedOops) { 104 if (dst->is_address() && !dst->is_stack() && (dst->type() == T_OBJECT || dst->type() == T_ARRAY)) return false; 105 if (src->is_address() && !src->is_stack() && (src->type() == T_OBJECT || src->type() == T_ARRAY)) return false; 106 } 107 108 if (dst->is_register()) { 109 if (src->is_address() && Assembler::is_simm13(src->as_address_ptr()->disp())) { 110 return !PatchALot; 111 } else if (src->is_single_stack()) { 112 return true; 113 } 114 } 115 116 if (src->is_register()) { 117 if (dst->is_address() && Assembler::is_simm13(dst->as_address_ptr()->disp())) { 118 return !PatchALot; 119 } else if (dst->is_single_stack()) { 120 return true; 121 } 122 } 123 124 if (dst->is_register() && 125 ((src->is_register() && src->is_single_word() && src->is_same_type(dst)) || 126 (src->is_constant() && LIR_Assembler::is_small_constant(op->as_Op1()->in_opr())))) { 127 return true; 128 } 129 130 return false; 131 } 132 133 default: 134 return false; 135 } 136 ShouldNotReachHere(); 137 } 138 139 140 LIR_Opr LIR_Assembler::receiverOpr() { 141 return FrameMap::O0_oop_opr; 142 } 143 144 145 LIR_Opr LIR_Assembler::incomingReceiverOpr() { 146 return FrameMap::I0_oop_opr; 147 } 148 149 150 LIR_Opr LIR_Assembler::osrBufferPointer() { 151 return FrameMap::I0_opr; 152 } 153 154 155 int LIR_Assembler::initial_frame_size_in_bytes() { 156 return in_bytes(frame_map()->framesize_in_bytes()); 157 } 158 159 160 // inline cache check: the inline cached class is in G5_inline_cache_reg(G5); 161 // we fetch the class of the receiver (O0) and compare it with the cached class. 162 // If they do not match we jump to slow case. 163 int LIR_Assembler::check_icache() { 164 int offset = __ offset(); 165 __ inline_cache_check(O0, G5_inline_cache_reg); 166 return offset; 167 } 168 169 170 void LIR_Assembler::osr_entry() { 171 // On-stack-replacement entry sequence (interpreter frame layout described in interpreter_sparc.cpp): 172 // 173 // 1. Create a new compiled activation. 174 // 2. Initialize local variables in the compiled activation. The expression stack must be empty 175 // at the osr_bci; it is not initialized. 176 // 3. Jump to the continuation address in compiled code to resume execution. 177 178 // OSR entry point 179 offsets()->set_value(CodeOffsets::OSR_Entry, code_offset()); 180 BlockBegin* osr_entry = compilation()->hir()->osr_entry(); 181 ValueStack* entry_state = osr_entry->end()->state(); 182 int number_of_locks = entry_state->locks_size(); 183 184 // Create a frame for the compiled activation. 185 __ build_frame(initial_frame_size_in_bytes()); 186 187 // OSR buffer is 188 // 189 // locals[nlocals-1..0] 190 // monitors[number_of_locks-1..0] 191 // 192 // locals is a direct copy of the interpreter frame so in the osr buffer 193 // so first slot in the local array is the last local from the interpreter 194 // and last slot is local[0] (receiver) from the interpreter 195 // 196 // Similarly with locks. The first lock slot in the osr buffer is the nth lock 197 // from the interpreter frame, the nth lock slot in the osr buffer is 0th lock 198 // in the interpreter frame (the method lock if a sync method) 199 200 // Initialize monitors in the compiled activation. 201 // I0: pointer to osr buffer 202 // 203 // All other registers are dead at this point and the locals will be 204 // copied into place by code emitted in the IR. 205 206 Register OSR_buf = osrBufferPointer()->as_register(); 207 { assert(frame::interpreter_frame_monitor_size() == BasicObjectLock::size(), "adjust code below"); 208 int monitor_offset = BytesPerWord * method()->max_locals() + 209 (2 * BytesPerWord) * (number_of_locks - 1); 210 // SharedRuntime::OSR_migration_begin() packs BasicObjectLocks in 211 // the OSR buffer using 2 word entries: first the lock and then 212 // the oop. 213 for (int i = 0; i < number_of_locks; i++) { 214 int slot_offset = monitor_offset - ((i * 2) * BytesPerWord); 215 #ifdef ASSERT 216 // verify the interpreter's monitor has a non-null object 217 { 218 Label L; 219 __ ld_ptr(OSR_buf, slot_offset + 1*BytesPerWord, O7); 220 __ cmp(G0, O7); 221 __ br(Assembler::notEqual, false, Assembler::pt, L); 222 __ delayed()->nop(); 223 __ stop("locked object is NULL"); 224 __ bind(L); 225 } 226 #endif // ASSERT 227 // Copy the lock field into the compiled activation. 228 __ ld_ptr(OSR_buf, slot_offset + 0, O7); 229 __ st_ptr(O7, frame_map()->address_for_monitor_lock(i)); 230 __ ld_ptr(OSR_buf, slot_offset + 1*BytesPerWord, O7); 231 __ st_ptr(O7, frame_map()->address_for_monitor_object(i)); 232 } 233 } 234 } 235 236 237 // Optimized Library calls 238 // This is the fast version of java.lang.String.compare; it has not 239 // OSR-entry and therefore, we generate a slow version for OSR's 240 void LIR_Assembler::emit_string_compare(LIR_Opr left, LIR_Opr right, LIR_Opr dst, CodeEmitInfo* info) { 241 Register str0 = left->as_register(); 242 Register str1 = right->as_register(); 243 244 Label Ldone; 245 246 Register result = dst->as_register(); 247 { 248 // Get a pointer to the first character of string0 in tmp0 and get string0.count in str0 249 // Get a pointer to the first character of string1 in tmp1 and get string1.count in str1 250 // Also, get string0.count-string1.count in o7 and get the condition code set 251 // Note: some instructions have been hoisted for better instruction scheduling 252 253 Register tmp0 = L0; 254 Register tmp1 = L1; 255 Register tmp2 = L2; 256 257 int value_offset = java_lang_String:: value_offset_in_bytes(); // char array 258 int offset_offset = java_lang_String::offset_offset_in_bytes(); // first character position 259 int count_offset = java_lang_String:: count_offset_in_bytes(); 260 261 __ load_heap_oop(str0, value_offset, tmp0); 262 __ ld(str0, offset_offset, tmp2); 263 __ add(tmp0, arrayOopDesc::base_offset_in_bytes(T_CHAR), tmp0); 264 __ ld(str0, count_offset, str0); 265 __ sll(tmp2, exact_log2(sizeof(jchar)), tmp2); 266 267 // str1 may be null 268 add_debug_info_for_null_check_here(info); 269 270 __ load_heap_oop(str1, value_offset, tmp1); 271 __ add(tmp0, tmp2, tmp0); 272 273 __ ld(str1, offset_offset, tmp2); 274 __ add(tmp1, arrayOopDesc::base_offset_in_bytes(T_CHAR), tmp1); 275 __ ld(str1, count_offset, str1); 276 __ sll(tmp2, exact_log2(sizeof(jchar)), tmp2); 277 __ subcc(str0, str1, O7); 278 __ add(tmp1, tmp2, tmp1); 279 } 280 281 { 282 // Compute the minimum of the string lengths, scale it and store it in limit 283 Register count0 = I0; 284 Register count1 = I1; 285 Register limit = L3; 286 287 Label Lskip; 288 __ sll(count0, exact_log2(sizeof(jchar)), limit); // string0 is shorter 289 __ br(Assembler::greater, true, Assembler::pt, Lskip); 290 __ delayed()->sll(count1, exact_log2(sizeof(jchar)), limit); // string1 is shorter 291 __ bind(Lskip); 292 293 // If either string is empty (or both of them) the result is the difference in lengths 294 __ cmp(limit, 0); 295 __ br(Assembler::equal, true, Assembler::pn, Ldone); 296 __ delayed()->mov(O7, result); // result is difference in lengths 297 } 298 299 { 300 // Neither string is empty 301 Label Lloop; 302 303 Register base0 = L0; 304 Register base1 = L1; 305 Register chr0 = I0; 306 Register chr1 = I1; 307 Register limit = L3; 308 309 // Shift base0 and base1 to the end of the arrays, negate limit 310 __ add(base0, limit, base0); 311 __ add(base1, limit, base1); 312 __ neg(limit); // limit = -min{string0.count, strin1.count} 313 314 __ lduh(base0, limit, chr0); 315 __ bind(Lloop); 316 __ lduh(base1, limit, chr1); 317 __ subcc(chr0, chr1, chr0); 318 __ br(Assembler::notZero, false, Assembler::pn, Ldone); 319 assert(chr0 == result, "result must be pre-placed"); 320 __ delayed()->inccc(limit, sizeof(jchar)); 321 __ br(Assembler::notZero, true, Assembler::pt, Lloop); 322 __ delayed()->lduh(base0, limit, chr0); 323 } 324 325 // If strings are equal up to min length, return the length difference. 326 __ mov(O7, result); 327 328 // Otherwise, return the difference between the first mismatched chars. 329 __ bind(Ldone); 330 } 331 332 333 // -------------------------------------------------------------------------------------------- 334 335 void LIR_Assembler::monitorexit(LIR_Opr obj_opr, LIR_Opr lock_opr, Register hdr, int monitor_no) { 336 if (!GenerateSynchronizationCode) return; 337 338 Register obj_reg = obj_opr->as_register(); 339 Register lock_reg = lock_opr->as_register(); 340 341 Address mon_addr = frame_map()->address_for_monitor_lock(monitor_no); 342 Register reg = mon_addr.base(); 343 int offset = mon_addr.disp(); 344 // compute pointer to BasicLock 345 if (mon_addr.is_simm13()) { 346 __ add(reg, offset, lock_reg); 347 } 348 else { 349 __ set(offset, lock_reg); 350 __ add(reg, lock_reg, lock_reg); 351 } 352 // unlock object 353 MonitorAccessStub* slow_case = new MonitorExitStub(lock_opr, UseFastLocking, monitor_no); 354 // _slow_case_stubs->append(slow_case); 355 // temporary fix: must be created after exceptionhandler, therefore as call stub 356 _slow_case_stubs->append(slow_case); 357 if (UseFastLocking) { 358 // try inlined fast unlocking first, revert to slow locking if it fails 359 // note: lock_reg points to the displaced header since the displaced header offset is 0! 360 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); 361 __ unlock_object(hdr, obj_reg, lock_reg, *slow_case->entry()); 362 } else { 363 // always do slow unlocking 364 // note: the slow unlocking code could be inlined here, however if we use 365 // slow unlocking, speed doesn't matter anyway and this solution is 366 // simpler and requires less duplicated code - additionally, the 367 // slow unlocking code is the same in either case which simplifies 368 // debugging 369 __ br(Assembler::always, false, Assembler::pt, *slow_case->entry()); 370 __ delayed()->nop(); 371 } 372 // done 373 __ bind(*slow_case->continuation()); 374 } 375 376 377 int LIR_Assembler::emit_exception_handler() { 378 // if the last instruction is a call (typically to do a throw which 379 // is coming at the end after block reordering) the return address 380 // must still point into the code area in order to avoid assertion 381 // failures when searching for the corresponding bci => add a nop 382 // (was bug 5/14/1999 - gri) 383 __ nop(); 384 385 // generate code for exception handler 386 ciMethod* method = compilation()->method(); 387 388 address handler_base = __ start_a_stub(exception_handler_size); 389 390 if (handler_base == NULL) { 391 // not enough space left for the handler 392 bailout("exception handler overflow"); 393 return -1; 394 } 395 396 int offset = code_offset(); 397 398 __ call(Runtime1::entry_for(Runtime1::handle_exception_id), relocInfo::runtime_call_type); 399 __ delayed()->nop(); 400 debug_only(__ stop("should have gone to the caller");) 401 assert(code_offset() - offset <= exception_handler_size, "overflow"); 402 __ end_a_stub(); 403 404 return offset; 405 } 406 407 408 // Emit the code to remove the frame from the stack in the exception 409 // unwind path. 410 int LIR_Assembler::emit_unwind_handler() { 411 #ifndef PRODUCT 412 if (CommentedAssembly) { 413 _masm->block_comment("Unwind handler"); 414 } 415 #endif 416 417 int offset = code_offset(); 418 419 // Fetch the exception from TLS and clear out exception related thread state 420 __ ld_ptr(G2_thread, in_bytes(JavaThread::exception_oop_offset()), O0); 421 __ st_ptr(G0, G2_thread, in_bytes(JavaThread::exception_oop_offset())); 422 __ st_ptr(G0, G2_thread, in_bytes(JavaThread::exception_pc_offset())); 423 424 __ bind(_unwind_handler_entry); 425 __ verify_not_null_oop(O0); 426 if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) { 427 __ mov(O0, I0); // Preserve the exception 428 } 429 430 // Preform needed unlocking 431 MonitorExitStub* stub = NULL; 432 if (method()->is_synchronized()) { 433 monitor_address(0, FrameMap::I1_opr); 434 stub = new MonitorExitStub(FrameMap::I1_opr, true, 0); 435 __ unlock_object(I3, I2, I1, *stub->entry()); 436 __ bind(*stub->continuation()); 437 } 438 439 if (compilation()->env()->dtrace_method_probes()) { 440 __ mov(G2_thread, O0); 441 jobject2reg(method()->constant_encoding(), O1); 442 __ call(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), relocInfo::runtime_call_type); 443 __ delayed()->nop(); 444 } 445 446 if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) { 447 __ mov(I0, O0); // Restore the exception 448 } 449 450 // dispatch to the unwind logic 451 __ call(Runtime1::entry_for(Runtime1::unwind_exception_id), relocInfo::runtime_call_type); 452 __ delayed()->nop(); 453 454 // Emit the slow path assembly 455 if (stub != NULL) { 456 stub->emit_code(this); 457 } 458 459 return offset; 460 } 461 462 463 int LIR_Assembler::emit_deopt_handler() { 464 // if the last instruction is a call (typically to do a throw which 465 // is coming at the end after block reordering) the return address 466 // must still point into the code area in order to avoid assertion 467 // failures when searching for the corresponding bci => add a nop 468 // (was bug 5/14/1999 - gri) 469 __ nop(); 470 471 // generate code for deopt handler 472 ciMethod* method = compilation()->method(); 473 address handler_base = __ start_a_stub(deopt_handler_size); 474 if (handler_base == NULL) { 475 // not enough space left for the handler 476 bailout("deopt handler overflow"); 477 return -1; 478 } 479 480 int offset = code_offset(); 481 AddressLiteral deopt_blob(SharedRuntime::deopt_blob()->unpack()); 482 __ JUMP(deopt_blob, G3_scratch, 0); // sethi;jmp 483 __ delayed()->nop(); 484 assert(code_offset() - offset <= deopt_handler_size, "overflow"); 485 debug_only(__ stop("should have gone to the caller");) 486 __ end_a_stub(); 487 488 return offset; 489 } 490 491 492 void LIR_Assembler::jobject2reg(jobject o, Register reg) { 493 if (o == NULL) { 494 __ set(NULL_WORD, reg); 495 } else { 496 int oop_index = __ oop_recorder()->find_index(o); 497 RelocationHolder rspec = oop_Relocation::spec(oop_index); 498 __ set(NULL_WORD, reg, rspec); // Will be set when the nmethod is created 499 } 500 } 501 502 503 void LIR_Assembler::jobject2reg_with_patching(Register reg, CodeEmitInfo *info) { 504 // Allocate a new index in oop table to hold the oop once it's been patched 505 int oop_index = __ oop_recorder()->allocate_index((jobject)NULL); 506 PatchingStub* patch = new PatchingStub(_masm, PatchingStub::load_klass_id, oop_index); 507 508 AddressLiteral addrlit(NULL, oop_Relocation::spec(oop_index)); 509 assert(addrlit.rspec().type() == relocInfo::oop_type, "must be an oop reloc"); 510 // It may not seem necessary to use a sethi/add pair to load a NULL into dest, but the 511 // NULL will be dynamically patched later and the patched value may be large. We must 512 // therefore generate the sethi/add as a placeholders 513 __ patchable_set(addrlit, reg); 514 515 patching_epilog(patch, lir_patch_normal, reg, info); 516 } 517 518 519 void LIR_Assembler::emit_op3(LIR_Op3* op) { 520 Register Rdividend = op->in_opr1()->as_register(); 521 Register Rdivisor = noreg; 522 Register Rscratch = op->in_opr3()->as_register(); 523 Register Rresult = op->result_opr()->as_register(); 524 int divisor = -1; 525 526 if (op->in_opr2()->is_register()) { 527 Rdivisor = op->in_opr2()->as_register(); 528 } else { 529 divisor = op->in_opr2()->as_constant_ptr()->as_jint(); 530 assert(Assembler::is_simm13(divisor), "can only handle simm13"); 531 } 532 533 assert(Rdividend != Rscratch, ""); 534 assert(Rdivisor != Rscratch, ""); 535 assert(op->code() == lir_idiv || op->code() == lir_irem, "Must be irem or idiv"); 536 537 if (Rdivisor == noreg && is_power_of_2(divisor)) { 538 // convert division by a power of two into some shifts and logical operations 539 if (op->code() == lir_idiv) { 540 if (divisor == 2) { 541 __ srl(Rdividend, 31, Rscratch); 542 } else { 543 __ sra(Rdividend, 31, Rscratch); 544 __ and3(Rscratch, divisor - 1, Rscratch); 545 } 546 __ add(Rdividend, Rscratch, Rscratch); 547 __ sra(Rscratch, log2_intptr(divisor), Rresult); 548 return; 549 } else { 550 if (divisor == 2) { 551 __ srl(Rdividend, 31, Rscratch); 552 } else { 553 __ sra(Rdividend, 31, Rscratch); 554 __ and3(Rscratch, divisor - 1,Rscratch); 555 } 556 __ add(Rdividend, Rscratch, Rscratch); 557 __ andn(Rscratch, divisor - 1,Rscratch); 558 __ sub(Rdividend, Rscratch, Rresult); 559 return; 560 } 561 } 562 563 __ sra(Rdividend, 31, Rscratch); 564 __ wry(Rscratch); 565 if (!VM_Version::v9_instructions_work()) { 566 // v9 doesn't require these nops 567 __ nop(); 568 __ nop(); 569 __ nop(); 570 __ nop(); 571 } 572 573 add_debug_info_for_div0_here(op->info()); 574 575 if (Rdivisor != noreg) { 576 __ sdivcc(Rdividend, Rdivisor, (op->code() == lir_idiv ? Rresult : Rscratch)); 577 } else { 578 assert(Assembler::is_simm13(divisor), "can only handle simm13"); 579 __ sdivcc(Rdividend, divisor, (op->code() == lir_idiv ? Rresult : Rscratch)); 580 } 581 582 Label skip; 583 __ br(Assembler::overflowSet, true, Assembler::pn, skip); 584 __ delayed()->Assembler::sethi(0x80000000, (op->code() == lir_idiv ? Rresult : Rscratch)); 585 __ bind(skip); 586 587 if (op->code() == lir_irem) { 588 if (Rdivisor != noreg) { 589 __ smul(Rscratch, Rdivisor, Rscratch); 590 } else { 591 __ smul(Rscratch, divisor, Rscratch); 592 } 593 __ sub(Rdividend, Rscratch, Rresult); 594 } 595 } 596 597 598 void LIR_Assembler::emit_opBranch(LIR_OpBranch* op) { 599 #ifdef ASSERT 600 assert(op->block() == NULL || op->block()->label() == op->label(), "wrong label"); 601 if (op->block() != NULL) _branch_target_blocks.append(op->block()); 602 if (op->ublock() != NULL) _branch_target_blocks.append(op->ublock()); 603 #endif 604 assert(op->info() == NULL, "shouldn't have CodeEmitInfo"); 605 606 if (op->cond() == lir_cond_always) { 607 __ br(Assembler::always, false, Assembler::pt, *(op->label())); 608 } else if (op->code() == lir_cond_float_branch) { 609 assert(op->ublock() != NULL, "must have unordered successor"); 610 bool is_unordered = (op->ublock() == op->block()); 611 Assembler::Condition acond; 612 switch (op->cond()) { 613 case lir_cond_equal: acond = Assembler::f_equal; break; 614 case lir_cond_notEqual: acond = Assembler::f_notEqual; break; 615 case lir_cond_less: acond = (is_unordered ? Assembler::f_unorderedOrLess : Assembler::f_less); break; 616 case lir_cond_greater: acond = (is_unordered ? Assembler::f_unorderedOrGreater : Assembler::f_greater); break; 617 case lir_cond_lessEqual: acond = (is_unordered ? Assembler::f_unorderedOrLessOrEqual : Assembler::f_lessOrEqual); break; 618 case lir_cond_greaterEqual: acond = (is_unordered ? Assembler::f_unorderedOrGreaterOrEqual: Assembler::f_greaterOrEqual); break; 619 default : ShouldNotReachHere(); 620 }; 621 622 if (!VM_Version::v9_instructions_work()) { 623 __ nop(); 624 } 625 __ fb( acond, false, Assembler::pn, *(op->label())); 626 } else { 627 assert (op->code() == lir_branch, "just checking"); 628 629 Assembler::Condition acond; 630 switch (op->cond()) { 631 case lir_cond_equal: acond = Assembler::equal; break; 632 case lir_cond_notEqual: acond = Assembler::notEqual; break; 633 case lir_cond_less: acond = Assembler::less; break; 634 case lir_cond_lessEqual: acond = Assembler::lessEqual; break; 635 case lir_cond_greaterEqual: acond = Assembler::greaterEqual; break; 636 case lir_cond_greater: acond = Assembler::greater; break; 637 case lir_cond_aboveEqual: acond = Assembler::greaterEqualUnsigned; break; 638 case lir_cond_belowEqual: acond = Assembler::lessEqualUnsigned; break; 639 default: ShouldNotReachHere(); 640 }; 641 642 // sparc has different condition codes for testing 32-bit 643 // vs. 64-bit values. We could always test xcc is we could 644 // guarantee that 32-bit loads always sign extended but that isn't 645 // true and since sign extension isn't free, it would impose a 646 // slight cost. 647 #ifdef _LP64 648 if (op->type() == T_INT) { 649 __ br(acond, false, Assembler::pn, *(op->label())); 650 } else 651 #endif 652 __ brx(acond, false, Assembler::pn, *(op->label())); 653 } 654 // The peephole pass fills the delay slot 655 } 656 657 658 void LIR_Assembler::emit_opConvert(LIR_OpConvert* op) { 659 Bytecodes::Code code = op->bytecode(); 660 LIR_Opr dst = op->result_opr(); 661 662 switch(code) { 663 case Bytecodes::_i2l: { 664 Register rlo = dst->as_register_lo(); 665 Register rhi = dst->as_register_hi(); 666 Register rval = op->in_opr()->as_register(); 667 #ifdef _LP64 668 __ sra(rval, 0, rlo); 669 #else 670 __ mov(rval, rlo); 671 __ sra(rval, BitsPerInt-1, rhi); 672 #endif 673 break; 674 } 675 case Bytecodes::_i2d: 676 case Bytecodes::_i2f: { 677 bool is_double = (code == Bytecodes::_i2d); 678 FloatRegister rdst = is_double ? dst->as_double_reg() : dst->as_float_reg(); 679 FloatRegisterImpl::Width w = is_double ? FloatRegisterImpl::D : FloatRegisterImpl::S; 680 FloatRegister rsrc = op->in_opr()->as_float_reg(); 681 if (rsrc != rdst) { 682 __ fmov(FloatRegisterImpl::S, rsrc, rdst); 683 } 684 __ fitof(w, rdst, rdst); 685 break; 686 } 687 case Bytecodes::_f2i:{ 688 FloatRegister rsrc = op->in_opr()->as_float_reg(); 689 Address addr = frame_map()->address_for_slot(dst->single_stack_ix()); 690 Label L; 691 // result must be 0 if value is NaN; test by comparing value to itself 692 __ fcmp(FloatRegisterImpl::S, Assembler::fcc0, rsrc, rsrc); 693 if (!VM_Version::v9_instructions_work()) { 694 __ nop(); 695 } 696 __ fb(Assembler::f_unordered, true, Assembler::pn, L); 697 __ delayed()->st(G0, addr); // annuled if contents of rsrc is not NaN 698 __ ftoi(FloatRegisterImpl::S, rsrc, rsrc); 699 // move integer result from float register to int register 700 __ stf(FloatRegisterImpl::S, rsrc, addr.base(), addr.disp()); 701 __ bind (L); 702 break; 703 } 704 case Bytecodes::_l2i: { 705 Register rlo = op->in_opr()->as_register_lo(); 706 Register rhi = op->in_opr()->as_register_hi(); 707 Register rdst = dst->as_register(); 708 #ifdef _LP64 709 __ sra(rlo, 0, rdst); 710 #else 711 __ mov(rlo, rdst); 712 #endif 713 break; 714 } 715 case Bytecodes::_d2f: 716 case Bytecodes::_f2d: { 717 bool is_double = (code == Bytecodes::_f2d); 718 assert((!is_double && dst->is_single_fpu()) || (is_double && dst->is_double_fpu()), "check"); 719 LIR_Opr val = op->in_opr(); 720 FloatRegister rval = (code == Bytecodes::_d2f) ? val->as_double_reg() : val->as_float_reg(); 721 FloatRegister rdst = is_double ? dst->as_double_reg() : dst->as_float_reg(); 722 FloatRegisterImpl::Width vw = is_double ? FloatRegisterImpl::S : FloatRegisterImpl::D; 723 FloatRegisterImpl::Width dw = is_double ? FloatRegisterImpl::D : FloatRegisterImpl::S; 724 __ ftof(vw, dw, rval, rdst); 725 break; 726 } 727 case Bytecodes::_i2s: 728 case Bytecodes::_i2b: { 729 Register rval = op->in_opr()->as_register(); 730 Register rdst = dst->as_register(); 731 int shift = (code == Bytecodes::_i2b) ? (BitsPerInt - T_BYTE_aelem_bytes * BitsPerByte) : (BitsPerInt - BitsPerShort); 732 __ sll (rval, shift, rdst); 733 __ sra (rdst, shift, rdst); 734 break; 735 } 736 case Bytecodes::_i2c: { 737 Register rval = op->in_opr()->as_register(); 738 Register rdst = dst->as_register(); 739 int shift = BitsPerInt - T_CHAR_aelem_bytes * BitsPerByte; 740 __ sll (rval, shift, rdst); 741 __ srl (rdst, shift, rdst); 742 break; 743 } 744 745 default: ShouldNotReachHere(); 746 } 747 } 748 749 750 void LIR_Assembler::align_call(LIR_Code) { 751 // do nothing since all instructions are word aligned on sparc 752 } 753 754 755 void LIR_Assembler::call(LIR_OpJavaCall* op, relocInfo::relocType rtype) { 756 __ call(op->addr(), rtype); 757 // The peephole pass fills the delay slot, add_call_info is done in 758 // LIR_Assembler::emit_delay. 759 } 760 761 762 void LIR_Assembler::ic_call(LIR_OpJavaCall* op) { 763 RelocationHolder rspec = virtual_call_Relocation::spec(pc()); 764 __ set_oop((jobject)Universe::non_oop_word(), G5_inline_cache_reg); 765 __ relocate(rspec); 766 __ call(op->addr(), relocInfo::none); 767 // The peephole pass fills the delay slot, add_call_info is done in 768 // LIR_Assembler::emit_delay. 769 } 770 771 772 void LIR_Assembler::vtable_call(LIR_OpJavaCall* op) { 773 add_debug_info_for_null_check_here(op->info()); 774 __ load_klass(O0, G3_scratch); 775 if (__ is_simm13(op->vtable_offset())) { 776 __ ld_ptr(G3_scratch, op->vtable_offset(), G5_method); 777 } else { 778 // This will generate 2 instructions 779 __ set(op->vtable_offset(), G5_method); 780 // ld_ptr, set_hi, set 781 __ ld_ptr(G3_scratch, G5_method, G5_method); 782 } 783 __ ld_ptr(G5_method, methodOopDesc::from_compiled_offset(), G3_scratch); 784 __ callr(G3_scratch, G0); 785 // the peephole pass fills the delay slot 786 } 787 788 int LIR_Assembler::store(LIR_Opr from_reg, Register base, int offset, BasicType type, bool wide, bool unaligned) { 789 int store_offset; 790 if (!Assembler::is_simm13(offset + (type == T_LONG) ? wordSize : 0)) { 791 assert(!unaligned, "can't handle this"); 792 // for offsets larger than a simm13 we setup the offset in O7 793 __ set(offset, O7); 794 store_offset = store(from_reg, base, O7, type, wide); 795 } else { 796 if (type == T_ARRAY || type == T_OBJECT) { 797 __ verify_oop(from_reg->as_register()); 798 } 799 store_offset = code_offset(); 800 switch (type) { 801 case T_BOOLEAN: // fall through 802 case T_BYTE : __ stb(from_reg->as_register(), base, offset); break; 803 case T_CHAR : __ sth(from_reg->as_register(), base, offset); break; 804 case T_SHORT : __ sth(from_reg->as_register(), base, offset); break; 805 case T_INT : __ stw(from_reg->as_register(), base, offset); break; 806 case T_LONG : 807 #ifdef _LP64 808 if (unaligned || PatchALot) { 809 __ srax(from_reg->as_register_lo(), 32, O7); 810 __ stw(from_reg->as_register_lo(), base, offset + lo_word_offset_in_bytes); 811 __ stw(O7, base, offset + hi_word_offset_in_bytes); 812 } else { 813 __ stx(from_reg->as_register_lo(), base, offset); 814 } 815 #else 816 assert(Assembler::is_simm13(offset + 4), "must be"); 817 __ stw(from_reg->as_register_lo(), base, offset + lo_word_offset_in_bytes); 818 __ stw(from_reg->as_register_hi(), base, offset + hi_word_offset_in_bytes); 819 #endif 820 break; 821 case T_ADDRESS: 822 __ st_ptr(from_reg->as_register(), base, offset); 823 break; 824 case T_ARRAY : // fall through 825 case T_OBJECT: 826 { 827 if (UseCompressedOops && !wide) { 828 __ encode_heap_oop(from_reg->as_register(), G3_scratch); 829 store_offset = code_offset(); 830 __ stw(G3_scratch, base, offset); 831 } else { 832 __ st_ptr(from_reg->as_register(), base, offset); 833 } 834 break; 835 } 836 837 case T_FLOAT : __ stf(FloatRegisterImpl::S, from_reg->as_float_reg(), base, offset); break; 838 case T_DOUBLE: 839 { 840 FloatRegister reg = from_reg->as_double_reg(); 841 // split unaligned stores 842 if (unaligned || PatchALot) { 843 assert(Assembler::is_simm13(offset + 4), "must be"); 844 __ stf(FloatRegisterImpl::S, reg->successor(), base, offset + 4); 845 __ stf(FloatRegisterImpl::S, reg, base, offset); 846 } else { 847 __ stf(FloatRegisterImpl::D, reg, base, offset); 848 } 849 break; 850 } 851 default : ShouldNotReachHere(); 852 } 853 } 854 return store_offset; 855 } 856 857 858 int LIR_Assembler::store(LIR_Opr from_reg, Register base, Register disp, BasicType type, bool wide) { 859 if (type == T_ARRAY || type == T_OBJECT) { 860 __ verify_oop(from_reg->as_register()); 861 } 862 int store_offset = code_offset(); 863 switch (type) { 864 case T_BOOLEAN: // fall through 865 case T_BYTE : __ stb(from_reg->as_register(), base, disp); break; 866 case T_CHAR : __ sth(from_reg->as_register(), base, disp); break; 867 case T_SHORT : __ sth(from_reg->as_register(), base, disp); break; 868 case T_INT : __ stw(from_reg->as_register(), base, disp); break; 869 case T_LONG : 870 #ifdef _LP64 871 __ stx(from_reg->as_register_lo(), base, disp); 872 #else 873 assert(from_reg->as_register_hi()->successor() == from_reg->as_register_lo(), "must match"); 874 __ std(from_reg->as_register_hi(), base, disp); 875 #endif 876 break; 877 case T_ADDRESS: 878 __ st_ptr(from_reg->as_register(), base, disp); 879 break; 880 case T_ARRAY : // fall through 881 case T_OBJECT: 882 { 883 if (UseCompressedOops && !wide) { 884 __ encode_heap_oop(from_reg->as_register(), G3_scratch); 885 store_offset = code_offset(); 886 __ stw(G3_scratch, base, disp); 887 } else { 888 __ st_ptr(from_reg->as_register(), base, disp); 889 } 890 break; 891 } 892 case T_FLOAT : __ stf(FloatRegisterImpl::S, from_reg->as_float_reg(), base, disp); break; 893 case T_DOUBLE: __ stf(FloatRegisterImpl::D, from_reg->as_double_reg(), base, disp); break; 894 default : ShouldNotReachHere(); 895 } 896 return store_offset; 897 } 898 899 900 int LIR_Assembler::load(Register base, int offset, LIR_Opr to_reg, BasicType type, bool wide, bool unaligned) { 901 int load_offset; 902 if (!Assembler::is_simm13(offset + (type == T_LONG) ? wordSize : 0)) { 903 assert(base != O7, "destroying register"); 904 assert(!unaligned, "can't handle this"); 905 // for offsets larger than a simm13 we setup the offset in O7 906 __ set(offset, O7); 907 load_offset = load(base, O7, to_reg, type, wide); 908 } else { 909 load_offset = code_offset(); 910 switch(type) { 911 case T_BOOLEAN: // fall through 912 case T_BYTE : __ ldsb(base, offset, to_reg->as_register()); break; 913 case T_CHAR : __ lduh(base, offset, to_reg->as_register()); break; 914 case T_SHORT : __ ldsh(base, offset, to_reg->as_register()); break; 915 case T_INT : __ ld(base, offset, to_reg->as_register()); break; 916 case T_LONG : 917 if (!unaligned) { 918 #ifdef _LP64 919 __ ldx(base, offset, to_reg->as_register_lo()); 920 #else 921 assert(to_reg->as_register_hi()->successor() == to_reg->as_register_lo(), 922 "must be sequential"); 923 __ ldd(base, offset, to_reg->as_register_hi()); 924 #endif 925 } else { 926 #ifdef _LP64 927 assert(base != to_reg->as_register_lo(), "can't handle this"); 928 assert(O7 != to_reg->as_register_lo(), "can't handle this"); 929 __ ld(base, offset + hi_word_offset_in_bytes, to_reg->as_register_lo()); 930 __ lduw(base, offset + lo_word_offset_in_bytes, O7); // in case O7 is base or offset, use it last 931 __ sllx(to_reg->as_register_lo(), 32, to_reg->as_register_lo()); 932 __ or3(to_reg->as_register_lo(), O7, to_reg->as_register_lo()); 933 #else 934 if (base == to_reg->as_register_lo()) { 935 __ ld(base, offset + hi_word_offset_in_bytes, to_reg->as_register_hi()); 936 __ ld(base, offset + lo_word_offset_in_bytes, to_reg->as_register_lo()); 937 } else { 938 __ ld(base, offset + lo_word_offset_in_bytes, to_reg->as_register_lo()); 939 __ ld(base, offset + hi_word_offset_in_bytes, to_reg->as_register_hi()); 940 } 941 #endif 942 } 943 break; 944 case T_ADDRESS: __ ld_ptr(base, offset, to_reg->as_register()); break; 945 case T_ARRAY : // fall through 946 case T_OBJECT: 947 { 948 if (UseCompressedOops && !wide) { 949 __ lduw(base, offset, to_reg->as_register()); 950 __ decode_heap_oop(to_reg->as_register()); 951 } else { 952 __ ld_ptr(base, offset, to_reg->as_register()); 953 } 954 break; 955 } 956 case T_FLOAT: __ ldf(FloatRegisterImpl::S, base, offset, to_reg->as_float_reg()); break; 957 case T_DOUBLE: 958 { 959 FloatRegister reg = to_reg->as_double_reg(); 960 // split unaligned loads 961 if (unaligned || PatchALot) { 962 __ ldf(FloatRegisterImpl::S, base, offset + 4, reg->successor()); 963 __ ldf(FloatRegisterImpl::S, base, offset, reg); 964 } else { 965 __ ldf(FloatRegisterImpl::D, base, offset, to_reg->as_double_reg()); 966 } 967 break; 968 } 969 default : ShouldNotReachHere(); 970 } 971 if (type == T_ARRAY || type == T_OBJECT) { 972 __ verify_oop(to_reg->as_register()); 973 } 974 } 975 return load_offset; 976 } 977 978 979 int LIR_Assembler::load(Register base, Register disp, LIR_Opr to_reg, BasicType type, bool wide) { 980 int load_offset = code_offset(); 981 switch(type) { 982 case T_BOOLEAN: // fall through 983 case T_BYTE : __ ldsb(base, disp, to_reg->as_register()); break; 984 case T_CHAR : __ lduh(base, disp, to_reg->as_register()); break; 985 case T_SHORT : __ ldsh(base, disp, to_reg->as_register()); break; 986 case T_INT : __ ld(base, disp, to_reg->as_register()); break; 987 case T_ADDRESS: __ ld_ptr(base, disp, to_reg->as_register()); break; 988 case T_ARRAY : // fall through 989 case T_OBJECT: 990 { 991 if (UseCompressedOops && !wide) { 992 __ lduw(base, disp, to_reg->as_register()); 993 __ decode_heap_oop(to_reg->as_register()); 994 } else { 995 __ ld_ptr(base, disp, to_reg->as_register()); 996 } 997 break; 998 } 999 case T_FLOAT: __ ldf(FloatRegisterImpl::S, base, disp, to_reg->as_float_reg()); break; 1000 case T_DOUBLE: __ ldf(FloatRegisterImpl::D, base, disp, to_reg->as_double_reg()); break; 1001 case T_LONG : 1002 #ifdef _LP64 1003 __ ldx(base, disp, to_reg->as_register_lo()); 1004 #else 1005 assert(to_reg->as_register_hi()->successor() == to_reg->as_register_lo(), 1006 "must be sequential"); 1007 __ ldd(base, disp, to_reg->as_register_hi()); 1008 #endif 1009 break; 1010 default : ShouldNotReachHere(); 1011 } 1012 if (type == T_ARRAY || type == T_OBJECT) { 1013 __ verify_oop(to_reg->as_register()); 1014 } 1015 return load_offset; 1016 } 1017 1018 void LIR_Assembler::const2stack(LIR_Opr src, LIR_Opr dest) { 1019 LIR_Const* c = src->as_constant_ptr(); 1020 switch (c->type()) { 1021 case T_INT: 1022 case T_FLOAT: { 1023 Register src_reg = O7; 1024 int value = c->as_jint_bits(); 1025 if (value == 0) { 1026 src_reg = G0; 1027 } else { 1028 __ set(value, O7); 1029 } 1030 Address addr = frame_map()->address_for_slot(dest->single_stack_ix()); 1031 __ stw(src_reg, addr.base(), addr.disp()); 1032 break; 1033 } 1034 case T_ADDRESS: { 1035 Register src_reg = O7; 1036 int value = c->as_jint_bits(); 1037 if (value == 0) { 1038 src_reg = G0; 1039 } else { 1040 __ set(value, O7); 1041 } 1042 Address addr = frame_map()->address_for_slot(dest->single_stack_ix()); 1043 __ st_ptr(src_reg, addr.base(), addr.disp()); 1044 break; 1045 } 1046 case T_OBJECT: { 1047 Register src_reg = O7; 1048 jobject2reg(c->as_jobject(), src_reg); 1049 Address addr = frame_map()->address_for_slot(dest->single_stack_ix()); 1050 __ st_ptr(src_reg, addr.base(), addr.disp()); 1051 break; 1052 } 1053 case T_LONG: 1054 case T_DOUBLE: { 1055 Address addr = frame_map()->address_for_double_slot(dest->double_stack_ix()); 1056 1057 Register tmp = O7; 1058 int value_lo = c->as_jint_lo_bits(); 1059 if (value_lo == 0) { 1060 tmp = G0; 1061 } else { 1062 __ set(value_lo, O7); 1063 } 1064 __ stw(tmp, addr.base(), addr.disp() + lo_word_offset_in_bytes); 1065 int value_hi = c->as_jint_hi_bits(); 1066 if (value_hi == 0) { 1067 tmp = G0; 1068 } else { 1069 __ set(value_hi, O7); 1070 } 1071 __ stw(tmp, addr.base(), addr.disp() + hi_word_offset_in_bytes); 1072 break; 1073 } 1074 default: 1075 Unimplemented(); 1076 } 1077 } 1078 1079 1080 void LIR_Assembler::const2mem(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info, bool wide) { 1081 LIR_Const* c = src->as_constant_ptr(); 1082 LIR_Address* addr = dest->as_address_ptr(); 1083 Register base = addr->base()->as_pointer_register(); 1084 int offset = -1; 1085 1086 switch (c->type()) { 1087 case T_INT: 1088 case T_FLOAT: 1089 case T_ADDRESS: { 1090 LIR_Opr tmp = FrameMap::O7_opr; 1091 int value = c->as_jint_bits(); 1092 if (value == 0) { 1093 tmp = FrameMap::G0_opr; 1094 } else if (Assembler::is_simm13(value)) { 1095 __ set(value, O7); 1096 } 1097 if (addr->index()->is_valid()) { 1098 assert(addr->disp() == 0, "must be zero"); 1099 offset = store(tmp, base, addr->index()->as_pointer_register(), type, wide); 1100 } else { 1101 assert(Assembler::is_simm13(addr->disp()), "can't handle larger addresses"); 1102 offset = store(tmp, base, addr->disp(), type, wide, false); 1103 } 1104 break; 1105 } 1106 case T_LONG: 1107 case T_DOUBLE: { 1108 assert(!addr->index()->is_valid(), "can't handle reg reg address here"); 1109 assert(Assembler::is_simm13(addr->disp()) && 1110 Assembler::is_simm13(addr->disp() + 4), "can't handle larger addresses"); 1111 1112 LIR_Opr tmp = FrameMap::O7_opr; 1113 int value_lo = c->as_jint_lo_bits(); 1114 if (value_lo == 0) { 1115 tmp = FrameMap::G0_opr; 1116 } else { 1117 __ set(value_lo, O7); 1118 } 1119 offset = store(tmp, base, addr->disp() + lo_word_offset_in_bytes, T_INT, wide, false); 1120 int value_hi = c->as_jint_hi_bits(); 1121 if (value_hi == 0) { 1122 tmp = FrameMap::G0_opr; 1123 } else { 1124 __ set(value_hi, O7); 1125 } 1126 offset = store(tmp, base, addr->disp() + hi_word_offset_in_bytes, T_INT, wide, false); 1127 break; 1128 } 1129 case T_OBJECT: { 1130 jobject obj = c->as_jobject(); 1131 LIR_Opr tmp; 1132 if (obj == NULL) { 1133 tmp = FrameMap::G0_opr; 1134 } else { 1135 tmp = FrameMap::O7_opr; 1136 jobject2reg(c->as_jobject(), O7); 1137 } 1138 // handle either reg+reg or reg+disp address 1139 if (addr->index()->is_valid()) { 1140 assert(addr->disp() == 0, "must be zero"); 1141 offset = store(tmp, base, addr->index()->as_pointer_register(), type, wide); 1142 } else { 1143 assert(Assembler::is_simm13(addr->disp()), "can't handle larger addresses"); 1144 offset = store(tmp, base, addr->disp(), type, wide, false); 1145 } 1146 1147 break; 1148 } 1149 default: 1150 Unimplemented(); 1151 } 1152 if (info != NULL) { 1153 assert(offset != -1, "offset should've been set"); 1154 add_debug_info_for_null_check(offset, info); 1155 } 1156 } 1157 1158 1159 void LIR_Assembler::const2reg(LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_code, CodeEmitInfo* info) { 1160 LIR_Const* c = src->as_constant_ptr(); 1161 LIR_Opr to_reg = dest; 1162 1163 switch (c->type()) { 1164 case T_INT: 1165 case T_ADDRESS: 1166 { 1167 jint con = c->as_jint(); 1168 if (to_reg->is_single_cpu()) { 1169 assert(patch_code == lir_patch_none, "no patching handled here"); 1170 __ set(con, to_reg->as_register()); 1171 } else { 1172 ShouldNotReachHere(); 1173 assert(to_reg->is_single_fpu(), "wrong register kind"); 1174 1175 __ set(con, O7); 1176 Address temp_slot(SP, (frame::register_save_words * wordSize) + STACK_BIAS); 1177 __ st(O7, temp_slot); 1178 __ ldf(FloatRegisterImpl::S, temp_slot, to_reg->as_float_reg()); 1179 } 1180 } 1181 break; 1182 1183 case T_LONG: 1184 { 1185 jlong con = c->as_jlong(); 1186 1187 if (to_reg->is_double_cpu()) { 1188 #ifdef _LP64 1189 __ set(con, to_reg->as_register_lo()); 1190 #else 1191 __ set(low(con), to_reg->as_register_lo()); 1192 __ set(high(con), to_reg->as_register_hi()); 1193 #endif 1194 #ifdef _LP64 1195 } else if (to_reg->is_single_cpu()) { 1196 __ set(con, to_reg->as_register()); 1197 #endif 1198 } else { 1199 ShouldNotReachHere(); 1200 assert(to_reg->is_double_fpu(), "wrong register kind"); 1201 Address temp_slot_lo(SP, ((frame::register_save_words ) * wordSize) + STACK_BIAS); 1202 Address temp_slot_hi(SP, ((frame::register_save_words) * wordSize) + (longSize/2) + STACK_BIAS); 1203 __ set(low(con), O7); 1204 __ st(O7, temp_slot_lo); 1205 __ set(high(con), O7); 1206 __ st(O7, temp_slot_hi); 1207 __ ldf(FloatRegisterImpl::D, temp_slot_lo, to_reg->as_double_reg()); 1208 } 1209 } 1210 break; 1211 1212 case T_OBJECT: 1213 { 1214 if (patch_code == lir_patch_none) { 1215 jobject2reg(c->as_jobject(), to_reg->as_register()); 1216 } else { 1217 jobject2reg_with_patching(to_reg->as_register(), info); 1218 } 1219 } 1220 break; 1221 1222 case T_FLOAT: 1223 { 1224 address const_addr = __ float_constant(c->as_jfloat()); 1225 if (const_addr == NULL) { 1226 bailout("const section overflow"); 1227 break; 1228 } 1229 RelocationHolder rspec = internal_word_Relocation::spec(const_addr); 1230 AddressLiteral const_addrlit(const_addr, rspec); 1231 if (to_reg->is_single_fpu()) { 1232 __ patchable_sethi(const_addrlit, O7); 1233 __ relocate(rspec); 1234 __ ldf(FloatRegisterImpl::S, O7, const_addrlit.low10(), to_reg->as_float_reg()); 1235 1236 } else { 1237 assert(to_reg->is_single_cpu(), "Must be a cpu register."); 1238 1239 __ set(const_addrlit, O7); 1240 __ ld(O7, 0, to_reg->as_register()); 1241 } 1242 } 1243 break; 1244 1245 case T_DOUBLE: 1246 { 1247 address const_addr = __ double_constant(c->as_jdouble()); 1248 if (const_addr == NULL) { 1249 bailout("const section overflow"); 1250 break; 1251 } 1252 RelocationHolder rspec = internal_word_Relocation::spec(const_addr); 1253 1254 if (to_reg->is_double_fpu()) { 1255 AddressLiteral const_addrlit(const_addr, rspec); 1256 __ patchable_sethi(const_addrlit, O7); 1257 __ relocate(rspec); 1258 __ ldf (FloatRegisterImpl::D, O7, const_addrlit.low10(), to_reg->as_double_reg()); 1259 } else { 1260 assert(to_reg->is_double_cpu(), "Must be a long register."); 1261 #ifdef _LP64 1262 __ set(jlong_cast(c->as_jdouble()), to_reg->as_register_lo()); 1263 #else 1264 __ set(low(jlong_cast(c->as_jdouble())), to_reg->as_register_lo()); 1265 __ set(high(jlong_cast(c->as_jdouble())), to_reg->as_register_hi()); 1266 #endif 1267 } 1268 1269 } 1270 break; 1271 1272 default: 1273 ShouldNotReachHere(); 1274 } 1275 } 1276 1277 Address LIR_Assembler::as_Address(LIR_Address* addr) { 1278 Register reg = addr->base()->as_register(); 1279 return Address(reg, addr->disp()); 1280 } 1281 1282 1283 void LIR_Assembler::stack2stack(LIR_Opr src, LIR_Opr dest, BasicType type) { 1284 switch (type) { 1285 case T_INT: 1286 case T_FLOAT: { 1287 Register tmp = O7; 1288 Address from = frame_map()->address_for_slot(src->single_stack_ix()); 1289 Address to = frame_map()->address_for_slot(dest->single_stack_ix()); 1290 __ lduw(from.base(), from.disp(), tmp); 1291 __ stw(tmp, to.base(), to.disp()); 1292 break; 1293 } 1294 case T_OBJECT: { 1295 Register tmp = O7; 1296 Address from = frame_map()->address_for_slot(src->single_stack_ix()); 1297 Address to = frame_map()->address_for_slot(dest->single_stack_ix()); 1298 __ ld_ptr(from.base(), from.disp(), tmp); 1299 __ st_ptr(tmp, to.base(), to.disp()); 1300 break; 1301 } 1302 case T_LONG: 1303 case T_DOUBLE: { 1304 Register tmp = O7; 1305 Address from = frame_map()->address_for_double_slot(src->double_stack_ix()); 1306 Address to = frame_map()->address_for_double_slot(dest->double_stack_ix()); 1307 __ lduw(from.base(), from.disp(), tmp); 1308 __ stw(tmp, to.base(), to.disp()); 1309 __ lduw(from.base(), from.disp() + 4, tmp); 1310 __ stw(tmp, to.base(), to.disp() + 4); 1311 break; 1312 } 1313 1314 default: 1315 ShouldNotReachHere(); 1316 } 1317 } 1318 1319 1320 Address LIR_Assembler::as_Address_hi(LIR_Address* addr) { 1321 Address base = as_Address(addr); 1322 return Address(base.base(), base.disp() + hi_word_offset_in_bytes); 1323 } 1324 1325 1326 Address LIR_Assembler::as_Address_lo(LIR_Address* addr) { 1327 Address base = as_Address(addr); 1328 return Address(base.base(), base.disp() + lo_word_offset_in_bytes); 1329 } 1330 1331 1332 void LIR_Assembler::mem2reg(LIR_Opr src_opr, LIR_Opr dest, BasicType type, 1333 LIR_PatchCode patch_code, CodeEmitInfo* info, bool wide, bool unaligned) { 1334 1335 LIR_Address* addr = src_opr->as_address_ptr(); 1336 LIR_Opr to_reg = dest; 1337 1338 Register src = addr->base()->as_pointer_register(); 1339 Register disp_reg = noreg; 1340 int disp_value = addr->disp(); 1341 bool needs_patching = (patch_code != lir_patch_none); 1342 1343 if (addr->base()->type() == T_OBJECT) { 1344 __ verify_oop(src); 1345 } 1346 1347 PatchingStub* patch = NULL; 1348 if (needs_patching) { 1349 patch = new PatchingStub(_masm, PatchingStub::access_field_id); 1350 assert(!to_reg->is_double_cpu() || 1351 patch_code == lir_patch_none || 1352 patch_code == lir_patch_normal, "patching doesn't match register"); 1353 } 1354 1355 if (addr->index()->is_illegal()) { 1356 if (!Assembler::is_simm13(disp_value) && (!unaligned || Assembler::is_simm13(disp_value + 4))) { 1357 if (needs_patching) { 1358 __ patchable_set(0, O7); 1359 } else { 1360 __ set(disp_value, O7); 1361 } 1362 disp_reg = O7; 1363 } 1364 } else if (unaligned || PatchALot) { 1365 __ add(src, addr->index()->as_register(), O7); 1366 src = O7; 1367 } else { 1368 disp_reg = addr->index()->as_pointer_register(); 1369 assert(disp_value == 0, "can't handle 3 operand addresses"); 1370 } 1371 1372 // remember the offset of the load. The patching_epilog must be done 1373 // before the call to add_debug_info, otherwise the PcDescs don't get 1374 // entered in increasing order. 1375 int offset = code_offset(); 1376 1377 assert(disp_reg != noreg || Assembler::is_simm13(disp_value), "should have set this up"); 1378 if (disp_reg == noreg) { 1379 offset = load(src, disp_value, to_reg, type, wide, unaligned); 1380 } else { 1381 assert(!unaligned, "can't handle this"); 1382 offset = load(src, disp_reg, to_reg, type, wide); 1383 } 1384 1385 if (patch != NULL) { 1386 patching_epilog(patch, patch_code, src, info); 1387 } 1388 if (info != NULL) add_debug_info_for_null_check(offset, info); 1389 } 1390 1391 1392 void LIR_Assembler::prefetchr(LIR_Opr src) { 1393 LIR_Address* addr = src->as_address_ptr(); 1394 Address from_addr = as_Address(addr); 1395 1396 if (VM_Version::has_v9()) { 1397 __ prefetch(from_addr, Assembler::severalReads); 1398 } 1399 } 1400 1401 1402 void LIR_Assembler::prefetchw(LIR_Opr src) { 1403 LIR_Address* addr = src->as_address_ptr(); 1404 Address from_addr = as_Address(addr); 1405 1406 if (VM_Version::has_v9()) { 1407 __ prefetch(from_addr, Assembler::severalWritesAndPossiblyReads); 1408 } 1409 } 1410 1411 1412 void LIR_Assembler::stack2reg(LIR_Opr src, LIR_Opr dest, BasicType type) { 1413 Address addr; 1414 if (src->is_single_word()) { 1415 addr = frame_map()->address_for_slot(src->single_stack_ix()); 1416 } else if (src->is_double_word()) { 1417 addr = frame_map()->address_for_double_slot(src->double_stack_ix()); 1418 } 1419 1420 bool unaligned = (addr.disp() - STACK_BIAS) % 8 != 0; 1421 load(addr.base(), addr.disp(), dest, dest->type(), true /*wide*/, unaligned); 1422 } 1423 1424 1425 void LIR_Assembler::reg2stack(LIR_Opr from_reg, LIR_Opr dest, BasicType type, bool pop_fpu_stack) { 1426 Address addr; 1427 if (dest->is_single_word()) { 1428 addr = frame_map()->address_for_slot(dest->single_stack_ix()); 1429 } else if (dest->is_double_word()) { 1430 addr = frame_map()->address_for_slot(dest->double_stack_ix()); 1431 } 1432 bool unaligned = (addr.disp() - STACK_BIAS) % 8 != 0; 1433 store(from_reg, addr.base(), addr.disp(), from_reg->type(), true /*wide*/, unaligned); 1434 } 1435 1436 1437 void LIR_Assembler::reg2reg(LIR_Opr from_reg, LIR_Opr to_reg) { 1438 if (from_reg->is_float_kind() && to_reg->is_float_kind()) { 1439 if (from_reg->is_double_fpu()) { 1440 // double to double moves 1441 assert(to_reg->is_double_fpu(), "should match"); 1442 __ fmov(FloatRegisterImpl::D, from_reg->as_double_reg(), to_reg->as_double_reg()); 1443 } else { 1444 // float to float moves 1445 assert(to_reg->is_single_fpu(), "should match"); 1446 __ fmov(FloatRegisterImpl::S, from_reg->as_float_reg(), to_reg->as_float_reg()); 1447 } 1448 } else if (!from_reg->is_float_kind() && !to_reg->is_float_kind()) { 1449 if (from_reg->is_double_cpu()) { 1450 #ifdef _LP64 1451 __ mov(from_reg->as_pointer_register(), to_reg->as_pointer_register()); 1452 #else 1453 assert(to_reg->is_double_cpu() && 1454 from_reg->as_register_hi() != to_reg->as_register_lo() && 1455 from_reg->as_register_lo() != to_reg->as_register_hi(), 1456 "should both be long and not overlap"); 1457 // long to long moves 1458 __ mov(from_reg->as_register_hi(), to_reg->as_register_hi()); 1459 __ mov(from_reg->as_register_lo(), to_reg->as_register_lo()); 1460 #endif 1461 #ifdef _LP64 1462 } else if (to_reg->is_double_cpu()) { 1463 // int to int moves 1464 __ mov(from_reg->as_register(), to_reg->as_register_lo()); 1465 #endif 1466 } else { 1467 // int to int moves 1468 __ mov(from_reg->as_register(), to_reg->as_register()); 1469 } 1470 } else { 1471 ShouldNotReachHere(); 1472 } 1473 if (to_reg->type() == T_OBJECT || to_reg->type() == T_ARRAY) { 1474 __ verify_oop(to_reg->as_register()); 1475 } 1476 } 1477 1478 1479 void LIR_Assembler::reg2mem(LIR_Opr from_reg, LIR_Opr dest, BasicType type, 1480 LIR_PatchCode patch_code, CodeEmitInfo* info, bool pop_fpu_stack, 1481 bool wide, bool unaligned) { 1482 LIR_Address* addr = dest->as_address_ptr(); 1483 1484 Register src = addr->base()->as_pointer_register(); 1485 Register disp_reg = noreg; 1486 int disp_value = addr->disp(); 1487 bool needs_patching = (patch_code != lir_patch_none); 1488 1489 if (addr->base()->is_oop_register()) { 1490 __ verify_oop(src); 1491 } 1492 1493 PatchingStub* patch = NULL; 1494 if (needs_patching) { 1495 patch = new PatchingStub(_masm, PatchingStub::access_field_id); 1496 assert(!from_reg->is_double_cpu() || 1497 patch_code == lir_patch_none || 1498 patch_code == lir_patch_normal, "patching doesn't match register"); 1499 } 1500 1501 if (addr->index()->is_illegal()) { 1502 if (!Assembler::is_simm13(disp_value) && (!unaligned || Assembler::is_simm13(disp_value + 4))) { 1503 if (needs_patching) { 1504 __ patchable_set(0, O7); 1505 } else { 1506 __ set(disp_value, O7); 1507 } 1508 disp_reg = O7; 1509 } 1510 } else if (unaligned || PatchALot) { 1511 __ add(src, addr->index()->as_register(), O7); 1512 src = O7; 1513 } else { 1514 disp_reg = addr->index()->as_pointer_register(); 1515 assert(disp_value == 0, "can't handle 3 operand addresses"); 1516 } 1517 1518 // remember the offset of the store. The patching_epilog must be done 1519 // before the call to add_debug_info_for_null_check, otherwise the PcDescs don't get 1520 // entered in increasing order. 1521 int offset; 1522 1523 assert(disp_reg != noreg || Assembler::is_simm13(disp_value), "should have set this up"); 1524 if (disp_reg == noreg) { 1525 offset = store(from_reg, src, disp_value, type, wide, unaligned); 1526 } else { 1527 assert(!unaligned, "can't handle this"); 1528 offset = store(from_reg, src, disp_reg, type, wide); 1529 } 1530 1531 if (patch != NULL) { 1532 patching_epilog(patch, patch_code, src, info); 1533 } 1534 1535 if (info != NULL) add_debug_info_for_null_check(offset, info); 1536 } 1537 1538 1539 void LIR_Assembler::return_op(LIR_Opr result) { 1540 // the poll may need a register so just pick one that isn't the return register 1541 #if defined(TIERED) && !defined(_LP64) 1542 if (result->type_field() == LIR_OprDesc::long_type) { 1543 // Must move the result to G1 1544 // Must leave proper result in O0,O1 and G1 (TIERED only) 1545 __ sllx(I0, 32, G1); // Shift bits into high G1 1546 __ srl (I1, 0, I1); // Zero extend O1 (harmless?) 1547 __ or3 (I1, G1, G1); // OR 64 bits into G1 1548 #ifdef ASSERT 1549 // mangle it so any problems will show up 1550 __ set(0xdeadbeef, I0); 1551 __ set(0xdeadbeef, I1); 1552 #endif 1553 } 1554 #endif // TIERED 1555 __ set((intptr_t)os::get_polling_page(), L0); 1556 __ relocate(relocInfo::poll_return_type); 1557 __ ld_ptr(L0, 0, G0); 1558 __ ret(); 1559 __ delayed()->restore(); 1560 } 1561 1562 1563 int LIR_Assembler::safepoint_poll(LIR_Opr tmp, CodeEmitInfo* info) { 1564 __ set((intptr_t)os::get_polling_page(), tmp->as_register()); 1565 if (info != NULL) { 1566 add_debug_info_for_branch(info); 1567 } else { 1568 __ relocate(relocInfo::poll_type); 1569 } 1570 1571 int offset = __ offset(); 1572 __ ld_ptr(tmp->as_register(), 0, G0); 1573 1574 return offset; 1575 } 1576 1577 1578 void LIR_Assembler::emit_static_call_stub() { 1579 address call_pc = __ pc(); 1580 address stub = __ start_a_stub(call_stub_size); 1581 if (stub == NULL) { 1582 bailout("static call stub overflow"); 1583 return; 1584 } 1585 1586 int start = __ offset(); 1587 __ relocate(static_stub_Relocation::spec(call_pc)); 1588 1589 __ set_oop(NULL, G5); 1590 // must be set to -1 at code generation time 1591 AddressLiteral addrlit(-1); 1592 __ jump_to(addrlit, G3); 1593 __ delayed()->nop(); 1594 1595 assert(__ offset() - start <= call_stub_size, "stub too big"); 1596 __ end_a_stub(); 1597 } 1598 1599 1600 void LIR_Assembler::comp_op(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Op2* op) { 1601 if (opr1->is_single_fpu()) { 1602 __ fcmp(FloatRegisterImpl::S, Assembler::fcc0, opr1->as_float_reg(), opr2->as_float_reg()); 1603 } else if (opr1->is_double_fpu()) { 1604 __ fcmp(FloatRegisterImpl::D, Assembler::fcc0, opr1->as_double_reg(), opr2->as_double_reg()); 1605 } else if (opr1->is_single_cpu()) { 1606 if (opr2->is_constant()) { 1607 switch (opr2->as_constant_ptr()->type()) { 1608 case T_INT: 1609 { jint con = opr2->as_constant_ptr()->as_jint(); 1610 if (Assembler::is_simm13(con)) { 1611 __ cmp(opr1->as_register(), con); 1612 } else { 1613 __ set(con, O7); 1614 __ cmp(opr1->as_register(), O7); 1615 } 1616 } 1617 break; 1618 1619 case T_OBJECT: 1620 // there are only equal/notequal comparisions on objects 1621 { jobject con = opr2->as_constant_ptr()->as_jobject(); 1622 if (con == NULL) { 1623 __ cmp(opr1->as_register(), 0); 1624 } else { 1625 jobject2reg(con, O7); 1626 __ cmp(opr1->as_register(), O7); 1627 } 1628 } 1629 break; 1630 1631 default: 1632 ShouldNotReachHere(); 1633 break; 1634 } 1635 } else { 1636 if (opr2->is_address()) { 1637 LIR_Address * addr = opr2->as_address_ptr(); 1638 BasicType type = addr->type(); 1639 if ( type == T_OBJECT ) __ ld_ptr(as_Address(addr), O7); 1640 else __ ld(as_Address(addr), O7); 1641 __ cmp(opr1->as_register(), O7); 1642 } else { 1643 __ cmp(opr1->as_register(), opr2->as_register()); 1644 } 1645 } 1646 } else if (opr1->is_double_cpu()) { 1647 Register xlo = opr1->as_register_lo(); 1648 Register xhi = opr1->as_register_hi(); 1649 if (opr2->is_constant() && opr2->as_jlong() == 0) { 1650 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "only handles these cases"); 1651 #ifdef _LP64 1652 __ orcc(xhi, G0, G0); 1653 #else 1654 __ orcc(xhi, xlo, G0); 1655 #endif 1656 } else if (opr2->is_register()) { 1657 Register ylo = opr2->as_register_lo(); 1658 Register yhi = opr2->as_register_hi(); 1659 #ifdef _LP64 1660 __ cmp(xlo, ylo); 1661 #else 1662 __ subcc(xlo, ylo, xlo); 1663 __ subccc(xhi, yhi, xhi); 1664 if (condition == lir_cond_equal || condition == lir_cond_notEqual) { 1665 __ orcc(xhi, xlo, G0); 1666 } 1667 #endif 1668 } else { 1669 ShouldNotReachHere(); 1670 } 1671 } else if (opr1->is_address()) { 1672 LIR_Address * addr = opr1->as_address_ptr(); 1673 BasicType type = addr->type(); 1674 assert (opr2->is_constant(), "Checking"); 1675 if ( type == T_OBJECT ) __ ld_ptr(as_Address(addr), O7); 1676 else __ ld(as_Address(addr), O7); 1677 __ cmp(O7, opr2->as_constant_ptr()->as_jint()); 1678 } else { 1679 ShouldNotReachHere(); 1680 } 1681 } 1682 1683 1684 void LIR_Assembler::comp_fl2i(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst, LIR_Op2* op){ 1685 if (code == lir_cmp_fd2i || code == lir_ucmp_fd2i) { 1686 bool is_unordered_less = (code == lir_ucmp_fd2i); 1687 if (left->is_single_fpu()) { 1688 __ float_cmp(true, is_unordered_less ? -1 : 1, left->as_float_reg(), right->as_float_reg(), dst->as_register()); 1689 } else if (left->is_double_fpu()) { 1690 __ float_cmp(false, is_unordered_less ? -1 : 1, left->as_double_reg(), right->as_double_reg(), dst->as_register()); 1691 } else { 1692 ShouldNotReachHere(); 1693 } 1694 } else if (code == lir_cmp_l2i) { 1695 #ifdef _LP64 1696 __ lcmp(left->as_register_lo(), right->as_register_lo(), dst->as_register()); 1697 #else 1698 __ lcmp(left->as_register_hi(), left->as_register_lo(), 1699 right->as_register_hi(), right->as_register_lo(), 1700 dst->as_register()); 1701 #endif 1702 } else { 1703 ShouldNotReachHere(); 1704 } 1705 } 1706 1707 1708 void LIR_Assembler::cmove(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, BasicType type) { 1709 Assembler::Condition acond; 1710 switch (condition) { 1711 case lir_cond_equal: acond = Assembler::equal; break; 1712 case lir_cond_notEqual: acond = Assembler::notEqual; break; 1713 case lir_cond_less: acond = Assembler::less; break; 1714 case lir_cond_lessEqual: acond = Assembler::lessEqual; break; 1715 case lir_cond_greaterEqual: acond = Assembler::greaterEqual; break; 1716 case lir_cond_greater: acond = Assembler::greater; break; 1717 case lir_cond_aboveEqual: acond = Assembler::greaterEqualUnsigned; break; 1718 case lir_cond_belowEqual: acond = Assembler::lessEqualUnsigned; break; 1719 default: ShouldNotReachHere(); 1720 }; 1721 1722 if (opr1->is_constant() && opr1->type() == T_INT) { 1723 Register dest = result->as_register(); 1724 // load up first part of constant before branch 1725 // and do the rest in the delay slot. 1726 if (!Assembler::is_simm13(opr1->as_jint())) { 1727 __ sethi(opr1->as_jint(), dest); 1728 } 1729 } else if (opr1->is_constant()) { 1730 const2reg(opr1, result, lir_patch_none, NULL); 1731 } else if (opr1->is_register()) { 1732 reg2reg(opr1, result); 1733 } else if (opr1->is_stack()) { 1734 stack2reg(opr1, result, result->type()); 1735 } else { 1736 ShouldNotReachHere(); 1737 } 1738 Label skip; 1739 #ifdef _LP64 1740 if (type == T_INT) { 1741 __ br(acond, false, Assembler::pt, skip); 1742 } else 1743 #endif 1744 __ brx(acond, false, Assembler::pt, skip); // checks icc on 32bit and xcc on 64bit 1745 if (opr1->is_constant() && opr1->type() == T_INT) { 1746 Register dest = result->as_register(); 1747 if (Assembler::is_simm13(opr1->as_jint())) { 1748 __ delayed()->or3(G0, opr1->as_jint(), dest); 1749 } else { 1750 // the sethi has been done above, so just put in the low 10 bits 1751 __ delayed()->or3(dest, opr1->as_jint() & 0x3ff, dest); 1752 } 1753 } else { 1754 // can't do anything useful in the delay slot 1755 __ delayed()->nop(); 1756 } 1757 if (opr2->is_constant()) { 1758 const2reg(opr2, result, lir_patch_none, NULL); 1759 } else if (opr2->is_register()) { 1760 reg2reg(opr2, result); 1761 } else if (opr2->is_stack()) { 1762 stack2reg(opr2, result, result->type()); 1763 } else { 1764 ShouldNotReachHere(); 1765 } 1766 __ bind(skip); 1767 } 1768 1769 1770 void LIR_Assembler::arith_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest, CodeEmitInfo* info, bool pop_fpu_stack) { 1771 assert(info == NULL, "unused on this code path"); 1772 assert(left->is_register(), "wrong items state"); 1773 assert(dest->is_register(), "wrong items state"); 1774 1775 if (right->is_register()) { 1776 if (dest->is_float_kind()) { 1777 1778 FloatRegister lreg, rreg, res; 1779 FloatRegisterImpl::Width w; 1780 if (right->is_single_fpu()) { 1781 w = FloatRegisterImpl::S; 1782 lreg = left->as_float_reg(); 1783 rreg = right->as_float_reg(); 1784 res = dest->as_float_reg(); 1785 } else { 1786 w = FloatRegisterImpl::D; 1787 lreg = left->as_double_reg(); 1788 rreg = right->as_double_reg(); 1789 res = dest->as_double_reg(); 1790 } 1791 1792 switch (code) { 1793 case lir_add: __ fadd(w, lreg, rreg, res); break; 1794 case lir_sub: __ fsub(w, lreg, rreg, res); break; 1795 case lir_mul: // fall through 1796 case lir_mul_strictfp: __ fmul(w, lreg, rreg, res); break; 1797 case lir_div: // fall through 1798 case lir_div_strictfp: __ fdiv(w, lreg, rreg, res); break; 1799 default: ShouldNotReachHere(); 1800 } 1801 1802 } else if (dest->is_double_cpu()) { 1803 #ifdef _LP64 1804 Register dst_lo = dest->as_register_lo(); 1805 Register op1_lo = left->as_pointer_register(); 1806 Register op2_lo = right->as_pointer_register(); 1807 1808 switch (code) { 1809 case lir_add: 1810 __ add(op1_lo, op2_lo, dst_lo); 1811 break; 1812 1813 case lir_sub: 1814 __ sub(op1_lo, op2_lo, dst_lo); 1815 break; 1816 1817 default: ShouldNotReachHere(); 1818 } 1819 #else 1820 Register op1_lo = left->as_register_lo(); 1821 Register op1_hi = left->as_register_hi(); 1822 Register op2_lo = right->as_register_lo(); 1823 Register op2_hi = right->as_register_hi(); 1824 Register dst_lo = dest->as_register_lo(); 1825 Register dst_hi = dest->as_register_hi(); 1826 1827 switch (code) { 1828 case lir_add: 1829 __ addcc(op1_lo, op2_lo, dst_lo); 1830 __ addc (op1_hi, op2_hi, dst_hi); 1831 break; 1832 1833 case lir_sub: 1834 __ subcc(op1_lo, op2_lo, dst_lo); 1835 __ subc (op1_hi, op2_hi, dst_hi); 1836 break; 1837 1838 default: ShouldNotReachHere(); 1839 } 1840 #endif 1841 } else { 1842 assert (right->is_single_cpu(), "Just Checking"); 1843 1844 Register lreg = left->as_register(); 1845 Register res = dest->as_register(); 1846 Register rreg = right->as_register(); 1847 switch (code) { 1848 case lir_add: __ add (lreg, rreg, res); break; 1849 case lir_sub: __ sub (lreg, rreg, res); break; 1850 case lir_mul: __ mult (lreg, rreg, res); break; 1851 default: ShouldNotReachHere(); 1852 } 1853 } 1854 } else { 1855 assert (right->is_constant(), "must be constant"); 1856 1857 if (dest->is_single_cpu()) { 1858 Register lreg = left->as_register(); 1859 Register res = dest->as_register(); 1860 int simm13 = right->as_constant_ptr()->as_jint(); 1861 1862 switch (code) { 1863 case lir_add: __ add (lreg, simm13, res); break; 1864 case lir_sub: __ sub (lreg, simm13, res); break; 1865 case lir_mul: __ mult (lreg, simm13, res); break; 1866 default: ShouldNotReachHere(); 1867 } 1868 } else { 1869 Register lreg = left->as_pointer_register(); 1870 Register res = dest->as_register_lo(); 1871 long con = right->as_constant_ptr()->as_jlong(); 1872 assert(Assembler::is_simm13(con), "must be simm13"); 1873 1874 switch (code) { 1875 case lir_add: __ add (lreg, (int)con, res); break; 1876 case lir_sub: __ sub (lreg, (int)con, res); break; 1877 case lir_mul: __ mult (lreg, (int)con, res); break; 1878 default: ShouldNotReachHere(); 1879 } 1880 } 1881 } 1882 } 1883 1884 1885 void LIR_Assembler::fpop() { 1886 // do nothing 1887 } 1888 1889 1890 void LIR_Assembler::intrinsic_op(LIR_Code code, LIR_Opr value, LIR_Opr thread, LIR_Opr dest, LIR_Op* op) { 1891 switch (code) { 1892 case lir_sin: 1893 case lir_tan: 1894 case lir_cos: { 1895 assert(thread->is_valid(), "preserve the thread object for performance reasons"); 1896 assert(dest->as_double_reg() == F0, "the result will be in f0/f1"); 1897 break; 1898 } 1899 case lir_sqrt: { 1900 assert(!thread->is_valid(), "there is no need for a thread_reg for dsqrt"); 1901 FloatRegister src_reg = value->as_double_reg(); 1902 FloatRegister dst_reg = dest->as_double_reg(); 1903 __ fsqrt(FloatRegisterImpl::D, src_reg, dst_reg); 1904 break; 1905 } 1906 case lir_abs: { 1907 assert(!thread->is_valid(), "there is no need for a thread_reg for fabs"); 1908 FloatRegister src_reg = value->as_double_reg(); 1909 FloatRegister dst_reg = dest->as_double_reg(); 1910 __ fabs(FloatRegisterImpl::D, src_reg, dst_reg); 1911 break; 1912 } 1913 default: { 1914 ShouldNotReachHere(); 1915 break; 1916 } 1917 } 1918 } 1919 1920 1921 void LIR_Assembler::logic_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest) { 1922 if (right->is_constant()) { 1923 if (dest->is_single_cpu()) { 1924 int simm13 = right->as_constant_ptr()->as_jint(); 1925 switch (code) { 1926 case lir_logic_and: __ and3 (left->as_register(), simm13, dest->as_register()); break; 1927 case lir_logic_or: __ or3 (left->as_register(), simm13, dest->as_register()); break; 1928 case lir_logic_xor: __ xor3 (left->as_register(), simm13, dest->as_register()); break; 1929 default: ShouldNotReachHere(); 1930 } 1931 } else { 1932 long c = right->as_constant_ptr()->as_jlong(); 1933 assert(c == (int)c && Assembler::is_simm13(c), "out of range"); 1934 int simm13 = (int)c; 1935 switch (code) { 1936 case lir_logic_and: 1937 #ifndef _LP64 1938 __ and3 (left->as_register_hi(), 0, dest->as_register_hi()); 1939 #endif 1940 __ and3 (left->as_register_lo(), simm13, dest->as_register_lo()); 1941 break; 1942 1943 case lir_logic_or: 1944 #ifndef _LP64 1945 __ or3 (left->as_register_hi(), 0, dest->as_register_hi()); 1946 #endif 1947 __ or3 (left->as_register_lo(), simm13, dest->as_register_lo()); 1948 break; 1949 1950 case lir_logic_xor: 1951 #ifndef _LP64 1952 __ xor3 (left->as_register_hi(), 0, dest->as_register_hi()); 1953 #endif 1954 __ xor3 (left->as_register_lo(), simm13, dest->as_register_lo()); 1955 break; 1956 1957 default: ShouldNotReachHere(); 1958 } 1959 } 1960 } else { 1961 assert(right->is_register(), "right should be in register"); 1962 1963 if (dest->is_single_cpu()) { 1964 switch (code) { 1965 case lir_logic_and: __ and3 (left->as_register(), right->as_register(), dest->as_register()); break; 1966 case lir_logic_or: __ or3 (left->as_register(), right->as_register(), dest->as_register()); break; 1967 case lir_logic_xor: __ xor3 (left->as_register(), right->as_register(), dest->as_register()); break; 1968 default: ShouldNotReachHere(); 1969 } 1970 } else { 1971 #ifdef _LP64 1972 Register l = (left->is_single_cpu() && left->is_oop_register()) ? left->as_register() : 1973 left->as_register_lo(); 1974 Register r = (right->is_single_cpu() && right->is_oop_register()) ? right->as_register() : 1975 right->as_register_lo(); 1976 1977 switch (code) { 1978 case lir_logic_and: __ and3 (l, r, dest->as_register_lo()); break; 1979 case lir_logic_or: __ or3 (l, r, dest->as_register_lo()); break; 1980 case lir_logic_xor: __ xor3 (l, r, dest->as_register_lo()); break; 1981 default: ShouldNotReachHere(); 1982 } 1983 #else 1984 switch (code) { 1985 case lir_logic_and: 1986 __ and3 (left->as_register_hi(), right->as_register_hi(), dest->as_register_hi()); 1987 __ and3 (left->as_register_lo(), right->as_register_lo(), dest->as_register_lo()); 1988 break; 1989 1990 case lir_logic_or: 1991 __ or3 (left->as_register_hi(), right->as_register_hi(), dest->as_register_hi()); 1992 __ or3 (left->as_register_lo(), right->as_register_lo(), dest->as_register_lo()); 1993 break; 1994 1995 case lir_logic_xor: 1996 __ xor3 (left->as_register_hi(), right->as_register_hi(), dest->as_register_hi()); 1997 __ xor3 (left->as_register_lo(), right->as_register_lo(), dest->as_register_lo()); 1998 break; 1999 2000 default: ShouldNotReachHere(); 2001 } 2002 #endif 2003 } 2004 } 2005 } 2006 2007 2008 int LIR_Assembler::shift_amount(BasicType t) { 2009 int elem_size = type2aelembytes(t); 2010 switch (elem_size) { 2011 case 1 : return 0; 2012 case 2 : return 1; 2013 case 4 : return 2; 2014 case 8 : return 3; 2015 } 2016 ShouldNotReachHere(); 2017 return -1; 2018 } 2019 2020 2021 void LIR_Assembler::throw_op(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) { 2022 assert(exceptionOop->as_register() == Oexception, "should match"); 2023 assert(exceptionPC->as_register() == Oissuing_pc, "should match"); 2024 2025 info->add_register_oop(exceptionOop); 2026 2027 // reuse the debug info from the safepoint poll for the throw op itself 2028 address pc_for_athrow = __ pc(); 2029 int pc_for_athrow_offset = __ offset(); 2030 RelocationHolder rspec = internal_word_Relocation::spec(pc_for_athrow); 2031 __ set(pc_for_athrow, Oissuing_pc, rspec); 2032 add_call_info(pc_for_athrow_offset, info); // for exception handler 2033 2034 __ call(Runtime1::entry_for(Runtime1::handle_exception_id), relocInfo::runtime_call_type); 2035 __ delayed()->nop(); 2036 } 2037 2038 2039 void LIR_Assembler::unwind_op(LIR_Opr exceptionOop) { 2040 assert(exceptionOop->as_register() == Oexception, "should match"); 2041 2042 __ br(Assembler::always, false, Assembler::pt, _unwind_handler_entry); 2043 __ delayed()->nop(); 2044 } 2045 2046 2047 void LIR_Assembler::emit_arraycopy(LIR_OpArrayCopy* op) { 2048 Register src = op->src()->as_register(); 2049 Register dst = op->dst()->as_register(); 2050 Register src_pos = op->src_pos()->as_register(); 2051 Register dst_pos = op->dst_pos()->as_register(); 2052 Register length = op->length()->as_register(); 2053 Register tmp = op->tmp()->as_register(); 2054 Register tmp2 = O7; 2055 2056 int flags = op->flags(); 2057 ciArrayKlass* default_type = op->expected_type(); 2058 BasicType basic_type = default_type != NULL ? default_type->element_type()->basic_type() : T_ILLEGAL; 2059 if (basic_type == T_ARRAY) basic_type = T_OBJECT; 2060 2061 // set up the arraycopy stub information 2062 ArrayCopyStub* stub = op->stub(); 2063 2064 // always do stub if no type information is available. it's ok if 2065 // the known type isn't loaded since the code sanity checks 2066 // in debug mode and the type isn't required when we know the exact type 2067 // also check that the type is an array type. 2068 // We also, for now, always call the stub if the barrier set requires a 2069 // write_ref_pre barrier (which the stub does, but none of the optimized 2070 // cases currently does). 2071 if (op->expected_type() == NULL || 2072 Universe::heap()->barrier_set()->has_write_ref_pre_barrier()) { 2073 __ mov(src, O0); 2074 __ mov(src_pos, O1); 2075 __ mov(dst, O2); 2076 __ mov(dst_pos, O3); 2077 __ mov(length, O4); 2078 __ call_VM_leaf(tmp, CAST_FROM_FN_PTR(address, Runtime1::arraycopy)); 2079 2080 __ br_zero(Assembler::less, false, Assembler::pn, O0, *stub->entry()); 2081 __ delayed()->nop(); 2082 __ bind(*stub->continuation()); 2083 return; 2084 } 2085 2086 assert(default_type != NULL && default_type->is_array_klass(), "must be true at this point"); 2087 2088 // make sure src and dst are non-null and load array length 2089 if (flags & LIR_OpArrayCopy::src_null_check) { 2090 __ tst(src); 2091 __ brx(Assembler::equal, false, Assembler::pn, *stub->entry()); 2092 __ delayed()->nop(); 2093 } 2094 2095 if (flags & LIR_OpArrayCopy::dst_null_check) { 2096 __ tst(dst); 2097 __ brx(Assembler::equal, false, Assembler::pn, *stub->entry()); 2098 __ delayed()->nop(); 2099 } 2100 2101 if (flags & LIR_OpArrayCopy::src_pos_positive_check) { 2102 // test src_pos register 2103 __ tst(src_pos); 2104 __ br(Assembler::less, false, Assembler::pn, *stub->entry()); 2105 __ delayed()->nop(); 2106 } 2107 2108 if (flags & LIR_OpArrayCopy::dst_pos_positive_check) { 2109 // test dst_pos register 2110 __ tst(dst_pos); 2111 __ br(Assembler::less, false, Assembler::pn, *stub->entry()); 2112 __ delayed()->nop(); 2113 } 2114 2115 if (flags & LIR_OpArrayCopy::length_positive_check) { 2116 // make sure length isn't negative 2117 __ tst(length); 2118 __ br(Assembler::less, false, Assembler::pn, *stub->entry()); 2119 __ delayed()->nop(); 2120 } 2121 2122 if (flags & LIR_OpArrayCopy::src_range_check) { 2123 __ ld(src, arrayOopDesc::length_offset_in_bytes(), tmp2); 2124 __ add(length, src_pos, tmp); 2125 __ cmp(tmp2, tmp); 2126 __ br(Assembler::carrySet, false, Assembler::pn, *stub->entry()); 2127 __ delayed()->nop(); 2128 } 2129 2130 if (flags & LIR_OpArrayCopy::dst_range_check) { 2131 __ ld(dst, arrayOopDesc::length_offset_in_bytes(), tmp2); 2132 __ add(length, dst_pos, tmp); 2133 __ cmp(tmp2, tmp); 2134 __ br(Assembler::carrySet, false, Assembler::pn, *stub->entry()); 2135 __ delayed()->nop(); 2136 } 2137 2138 if (flags & LIR_OpArrayCopy::type_check) { 2139 if (UseCompressedOops) { 2140 // We don't need decode because we just need to compare 2141 __ lduw(src, oopDesc::klass_offset_in_bytes(), tmp); 2142 __ lduw(dst, oopDesc::klass_offset_in_bytes(), tmp2); 2143 __ cmp(tmp, tmp2); 2144 __ br(Assembler::notEqual, false, Assembler::pt, *stub->entry()); 2145 } else { 2146 __ ld_ptr(src, oopDesc::klass_offset_in_bytes(), tmp); 2147 __ ld_ptr(dst, oopDesc::klass_offset_in_bytes(), tmp2); 2148 __ cmp(tmp, tmp2); 2149 __ brx(Assembler::notEqual, false, Assembler::pt, *stub->entry()); 2150 } 2151 __ delayed()->nop(); 2152 } 2153 2154 #ifdef ASSERT 2155 if (basic_type != T_OBJECT || !(flags & LIR_OpArrayCopy::type_check)) { 2156 // Sanity check the known type with the incoming class. For the 2157 // primitive case the types must match exactly with src.klass and 2158 // dst.klass each exactly matching the default type. For the 2159 // object array case, if no type check is needed then either the 2160 // dst type is exactly the expected type and the src type is a 2161 // subtype which we can't check or src is the same array as dst 2162 // but not necessarily exactly of type default_type. 2163 Label known_ok, halt; 2164 jobject2reg(op->expected_type()->constant_encoding(), tmp); 2165 if (UseCompressedOops) { 2166 // tmp holds the default type. It currently comes uncompressed after the 2167 // load of a constant, so encode it. 2168 __ encode_heap_oop(tmp); 2169 // load the raw value of the dst klass, since we will be comparing 2170 // uncompressed values directly. 2171 __ lduw(dst, oopDesc::klass_offset_in_bytes(), tmp2); 2172 if (basic_type != T_OBJECT) { 2173 __ cmp(tmp, tmp2); 2174 __ br(Assembler::notEqual, false, Assembler::pn, halt); 2175 // load the raw value of the src klass. 2176 __ delayed()->lduw(src, oopDesc::klass_offset_in_bytes(), tmp2); 2177 __ cmp(tmp, tmp2); 2178 __ br(Assembler::equal, false, Assembler::pn, known_ok); 2179 __ delayed()->nop(); 2180 } else { 2181 __ cmp(tmp, tmp2); 2182 __ br(Assembler::equal, false, Assembler::pn, known_ok); 2183 __ delayed()->cmp(src, dst); 2184 __ brx(Assembler::equal, false, Assembler::pn, known_ok); 2185 __ delayed()->nop(); 2186 } 2187 } else { 2188 __ ld_ptr(dst, oopDesc::klass_offset_in_bytes(), tmp2); 2189 if (basic_type != T_OBJECT) { 2190 __ cmp(tmp, tmp2); 2191 __ brx(Assembler::notEqual, false, Assembler::pn, halt); 2192 __ delayed()->ld_ptr(src, oopDesc::klass_offset_in_bytes(), tmp2); 2193 __ cmp(tmp, tmp2); 2194 __ brx(Assembler::equal, false, Assembler::pn, known_ok); 2195 __ delayed()->nop(); 2196 } else { 2197 __ cmp(tmp, tmp2); 2198 __ brx(Assembler::equal, false, Assembler::pn, known_ok); 2199 __ delayed()->cmp(src, dst); 2200 __ brx(Assembler::equal, false, Assembler::pn, known_ok); 2201 __ delayed()->nop(); 2202 } 2203 } 2204 __ bind(halt); 2205 __ stop("incorrect type information in arraycopy"); 2206 __ bind(known_ok); 2207 } 2208 #endif 2209 2210 int shift = shift_amount(basic_type); 2211 2212 Register src_ptr = O0; 2213 Register dst_ptr = O1; 2214 Register len = O2; 2215 2216 __ add(src, arrayOopDesc::base_offset_in_bytes(basic_type), src_ptr); 2217 LP64_ONLY(__ sra(src_pos, 0, src_pos);) //higher 32bits must be null 2218 if (shift == 0) { 2219 __ add(src_ptr, src_pos, src_ptr); 2220 } else { 2221 __ sll(src_pos, shift, tmp); 2222 __ add(src_ptr, tmp, src_ptr); 2223 } 2224 2225 __ add(dst, arrayOopDesc::base_offset_in_bytes(basic_type), dst_ptr); 2226 LP64_ONLY(__ sra(dst_pos, 0, dst_pos);) //higher 32bits must be null 2227 if (shift == 0) { 2228 __ add(dst_ptr, dst_pos, dst_ptr); 2229 } else { 2230 __ sll(dst_pos, shift, tmp); 2231 __ add(dst_ptr, tmp, dst_ptr); 2232 } 2233 2234 if (basic_type != T_OBJECT) { 2235 if (shift == 0) { 2236 __ mov(length, len); 2237 } else { 2238 __ sll(length, shift, len); 2239 } 2240 __ call_VM_leaf(tmp, CAST_FROM_FN_PTR(address, Runtime1::primitive_arraycopy)); 2241 } else { 2242 // oop_arraycopy takes a length in number of elements, so don't scale it. 2243 __ mov(length, len); 2244 __ call_VM_leaf(tmp, CAST_FROM_FN_PTR(address, Runtime1::oop_arraycopy)); 2245 } 2246 2247 __ bind(*stub->continuation()); 2248 } 2249 2250 2251 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, LIR_Opr count, LIR_Opr dest, LIR_Opr tmp) { 2252 if (dest->is_single_cpu()) { 2253 #ifdef _LP64 2254 if (left->type() == T_OBJECT) { 2255 switch (code) { 2256 case lir_shl: __ sllx (left->as_register(), count->as_register(), dest->as_register()); break; 2257 case lir_shr: __ srax (left->as_register(), count->as_register(), dest->as_register()); break; 2258 case lir_ushr: __ srl (left->as_register(), count->as_register(), dest->as_register()); break; 2259 default: ShouldNotReachHere(); 2260 } 2261 } else 2262 #endif 2263 switch (code) { 2264 case lir_shl: __ sll (left->as_register(), count->as_register(), dest->as_register()); break; 2265 case lir_shr: __ sra (left->as_register(), count->as_register(), dest->as_register()); break; 2266 case lir_ushr: __ srl (left->as_register(), count->as_register(), dest->as_register()); break; 2267 default: ShouldNotReachHere(); 2268 } 2269 } else { 2270 #ifdef _LP64 2271 switch (code) { 2272 case lir_shl: __ sllx (left->as_register_lo(), count->as_register(), dest->as_register_lo()); break; 2273 case lir_shr: __ srax (left->as_register_lo(), count->as_register(), dest->as_register_lo()); break; 2274 case lir_ushr: __ srlx (left->as_register_lo(), count->as_register(), dest->as_register_lo()); break; 2275 default: ShouldNotReachHere(); 2276 } 2277 #else 2278 switch (code) { 2279 case lir_shl: __ lshl (left->as_register_hi(), left->as_register_lo(), count->as_register(), dest->as_register_hi(), dest->as_register_lo(), G3_scratch); break; 2280 case lir_shr: __ lshr (left->as_register_hi(), left->as_register_lo(), count->as_register(), dest->as_register_hi(), dest->as_register_lo(), G3_scratch); break; 2281 case lir_ushr: __ lushr (left->as_register_hi(), left->as_register_lo(), count->as_register(), dest->as_register_hi(), dest->as_register_lo(), G3_scratch); break; 2282 default: ShouldNotReachHere(); 2283 } 2284 #endif 2285 } 2286 } 2287 2288 2289 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, jint count, LIR_Opr dest) { 2290 #ifdef _LP64 2291 if (left->type() == T_OBJECT) { 2292 count = count & 63; // shouldn't shift by more than sizeof(intptr_t) 2293 Register l = left->as_register(); 2294 Register d = dest->as_register_lo(); 2295 switch (code) { 2296 case lir_shl: __ sllx (l, count, d); break; 2297 case lir_shr: __ srax (l, count, d); break; 2298 case lir_ushr: __ srlx (l, count, d); break; 2299 default: ShouldNotReachHere(); 2300 } 2301 return; 2302 } 2303 #endif 2304 2305 if (dest->is_single_cpu()) { 2306 count = count & 0x1F; // Java spec 2307 switch (code) { 2308 case lir_shl: __ sll (left->as_register(), count, dest->as_register()); break; 2309 case lir_shr: __ sra (left->as_register(), count, dest->as_register()); break; 2310 case lir_ushr: __ srl (left->as_register(), count, dest->as_register()); break; 2311 default: ShouldNotReachHere(); 2312 } 2313 } else if (dest->is_double_cpu()) { 2314 count = count & 63; // Java spec 2315 switch (code) { 2316 case lir_shl: __ sllx (left->as_pointer_register(), count, dest->as_pointer_register()); break; 2317 case lir_shr: __ srax (left->as_pointer_register(), count, dest->as_pointer_register()); break; 2318 case lir_ushr: __ srlx (left->as_pointer_register(), count, dest->as_pointer_register()); break; 2319 default: ShouldNotReachHere(); 2320 } 2321 } else { 2322 ShouldNotReachHere(); 2323 } 2324 } 2325 2326 2327 void LIR_Assembler::emit_alloc_obj(LIR_OpAllocObj* op) { 2328 assert(op->tmp1()->as_register() == G1 && 2329 op->tmp2()->as_register() == G3 && 2330 op->tmp3()->as_register() == G4 && 2331 op->obj()->as_register() == O0 && 2332 op->klass()->as_register() == G5, "must be"); 2333 if (op->init_check()) { 2334 __ ld(op->klass()->as_register(), 2335 instanceKlass::init_state_offset_in_bytes() + sizeof(oopDesc), 2336 op->tmp1()->as_register()); 2337 add_debug_info_for_null_check_here(op->stub()->info()); 2338 __ cmp(op->tmp1()->as_register(), instanceKlass::fully_initialized); 2339 __ br(Assembler::notEqual, false, Assembler::pn, *op->stub()->entry()); 2340 __ delayed()->nop(); 2341 } 2342 __ allocate_object(op->obj()->as_register(), 2343 op->tmp1()->as_register(), 2344 op->tmp2()->as_register(), 2345 op->tmp3()->as_register(), 2346 op->header_size(), 2347 op->object_size(), 2348 op->klass()->as_register(), 2349 *op->stub()->entry()); 2350 __ bind(*op->stub()->continuation()); 2351 __ verify_oop(op->obj()->as_register()); 2352 } 2353 2354 2355 void LIR_Assembler::emit_alloc_array(LIR_OpAllocArray* op) { 2356 assert(op->tmp1()->as_register() == G1 && 2357 op->tmp2()->as_register() == G3 && 2358 op->tmp3()->as_register() == G4 && 2359 op->tmp4()->as_register() == O1 && 2360 op->klass()->as_register() == G5, "must be"); 2361 2362 LP64_ONLY( __ signx(op->len()->as_register()); ) 2363 if (UseSlowPath || 2364 (!UseFastNewObjectArray && (op->type() == T_OBJECT || op->type() == T_ARRAY)) || 2365 (!UseFastNewTypeArray && (op->type() != T_OBJECT && op->type() != T_ARRAY))) { 2366 __ br(Assembler::always, false, Assembler::pt, *op->stub()->entry()); 2367 __ delayed()->nop(); 2368 } else { 2369 __ allocate_array(op->obj()->as_register(), 2370 op->len()->as_register(), 2371 op->tmp1()->as_register(), 2372 op->tmp2()->as_register(), 2373 op->tmp3()->as_register(), 2374 arrayOopDesc::header_size(op->type()), 2375 type2aelembytes(op->type()), 2376 op->klass()->as_register(), 2377 *op->stub()->entry()); 2378 } 2379 __ bind(*op->stub()->continuation()); 2380 } 2381 2382 2383 void LIR_Assembler::type_profile_helper(Register mdo, int mdo_offset_bias, 2384 ciMethodData *md, ciProfileData *data, 2385 Register recv, Register tmp1, Label* update_done) { 2386 uint i; 2387 for (i = 0; i < VirtualCallData::row_limit(); i++) { 2388 Label next_test; 2389 // See if the receiver is receiver[n]. 2390 Address receiver_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i)) - 2391 mdo_offset_bias); 2392 __ ld_ptr(receiver_addr, tmp1); 2393 __ verify_oop(tmp1); 2394 __ cmp(recv, tmp1); 2395 __ brx(Assembler::notEqual, false, Assembler::pt, next_test); 2396 __ delayed()->nop(); 2397 Address data_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i)) - 2398 mdo_offset_bias); 2399 __ ld_ptr(data_addr, tmp1); 2400 __ add(tmp1, DataLayout::counter_increment, tmp1); 2401 __ st_ptr(tmp1, data_addr); 2402 __ ba(false, *update_done); 2403 __ delayed()->nop(); 2404 __ bind(next_test); 2405 } 2406 2407 // Didn't find receiver; find next empty slot and fill it in 2408 for (i = 0; i < VirtualCallData::row_limit(); i++) { 2409 Label next_test; 2410 Address recv_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i)) - 2411 mdo_offset_bias); 2412 __ ld_ptr(recv_addr, tmp1); 2413 __ br_notnull(tmp1, false, Assembler::pt, next_test); 2414 __ delayed()->nop(); 2415 __ st_ptr(recv, recv_addr); 2416 __ set(DataLayout::counter_increment, tmp1); 2417 __ st_ptr(tmp1, mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i)) - 2418 mdo_offset_bias); 2419 __ ba(false, *update_done); 2420 __ delayed()->nop(); 2421 __ bind(next_test); 2422 } 2423 } 2424 2425 2426 void LIR_Assembler::setup_md_access(ciMethod* method, int bci, 2427 ciMethodData*& md, ciProfileData*& data, int& mdo_offset_bias) { 2428 md = method->method_data_or_null(); 2429 assert(md != NULL, "Sanity"); 2430 data = md->bci_to_data(bci); 2431 assert(data != NULL, "need data for checkcast"); 2432 assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for type check"); 2433 if (!Assembler::is_simm13(md->byte_offset_of_slot(data, DataLayout::header_offset()) + data->size_in_bytes())) { 2434 // The offset is large so bias the mdo by the base of the slot so 2435 // that the ld can use simm13s to reference the slots of the data 2436 mdo_offset_bias = md->byte_offset_of_slot(data, DataLayout::header_offset()); 2437 } 2438 } 2439 2440 void LIR_Assembler::emit_typecheck_helper(LIR_OpTypeCheck *op, Label* success, Label* failure, Label* obj_is_null) { 2441 // we always need a stub for the failure case. 2442 CodeStub* stub = op->stub(); 2443 Register obj = op->object()->as_register(); 2444 Register k_RInfo = op->tmp1()->as_register(); 2445 Register klass_RInfo = op->tmp2()->as_register(); 2446 Register dst = op->result_opr()->as_register(); 2447 Register Rtmp1 = op->tmp3()->as_register(); 2448 ciKlass* k = op->klass(); 2449 2450 2451 if (obj == k_RInfo) { 2452 k_RInfo = klass_RInfo; 2453 klass_RInfo = obj; 2454 } 2455 2456 ciMethodData* md; 2457 ciProfileData* data; 2458 int mdo_offset_bias = 0; 2459 if (op->should_profile()) { 2460 ciMethod* method = op->profiled_method(); 2461 assert(method != NULL, "Should have method"); 2462 setup_md_access(method, op->profiled_bci(), md, data, mdo_offset_bias); 2463 2464 Label not_null; 2465 __ br_notnull(obj, false, Assembler::pn, not_null); 2466 __ delayed()->nop(); 2467 Register mdo = k_RInfo; 2468 Register data_val = Rtmp1; 2469 jobject2reg(md->constant_encoding(), mdo); 2470 if (mdo_offset_bias > 0) { 2471 __ set(mdo_offset_bias, data_val); 2472 __ add(mdo, data_val, mdo); 2473 } 2474 Address flags_addr(mdo, md->byte_offset_of_slot(data, DataLayout::flags_offset()) - mdo_offset_bias); 2475 __ ldub(flags_addr, data_val); 2476 __ or3(data_val, BitData::null_seen_byte_constant(), data_val); 2477 __ stb(data_val, flags_addr); 2478 __ ba(false, *obj_is_null); 2479 __ delayed()->nop(); 2480 __ bind(not_null); 2481 } else { 2482 __ br_null(obj, false, Assembler::pn, *obj_is_null); 2483 __ delayed()->nop(); 2484 } 2485 2486 Label profile_cast_failure, profile_cast_success; 2487 Label *failure_target = op->should_profile() ? &profile_cast_failure : failure; 2488 Label *success_target = op->should_profile() ? &profile_cast_success : success; 2489 2490 // patching may screw with our temporaries on sparc, 2491 // so let's do it before loading the class 2492 if (k->is_loaded()) { 2493 jobject2reg(k->constant_encoding(), k_RInfo); 2494 } else { 2495 jobject2reg_with_patching(k_RInfo, op->info_for_patch()); 2496 } 2497 assert(obj != k_RInfo, "must be different"); 2498 2499 // get object class 2500 // not a safepoint as obj null check happens earlier 2501 __ load_klass(obj, klass_RInfo); 2502 if (op->fast_check()) { 2503 assert_different_registers(klass_RInfo, k_RInfo); 2504 __ cmp(k_RInfo, klass_RInfo); 2505 __ brx(Assembler::notEqual, false, Assembler::pt, *failure_target); 2506 __ delayed()->nop(); 2507 } else { 2508 bool need_slow_path = true; 2509 if (k->is_loaded()) { 2510 if (k->super_check_offset() != sizeof(oopDesc) + Klass::secondary_super_cache_offset_in_bytes()) 2511 need_slow_path = false; 2512 // perform the fast part of the checking logic 2513 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, noreg, 2514 (need_slow_path ? success_target : NULL), 2515 failure_target, NULL, 2516 RegisterOrConstant(k->super_check_offset())); 2517 } else { 2518 // perform the fast part of the checking logic 2519 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, O7, success_target, 2520 failure_target, NULL); 2521 } 2522 if (need_slow_path) { 2523 // call out-of-line instance of __ check_klass_subtype_slow_path(...): 2524 assert(klass_RInfo == G3 && k_RInfo == G1, "incorrect call setup"); 2525 __ call(Runtime1::entry_for(Runtime1::slow_subtype_check_id), relocInfo::runtime_call_type); 2526 __ delayed()->nop(); 2527 __ cmp(G3, 0); 2528 __ br(Assembler::equal, false, Assembler::pn, *failure_target); 2529 __ delayed()->nop(); 2530 // Fall through to success case 2531 } 2532 } 2533 2534 if (op->should_profile()) { 2535 Register mdo = klass_RInfo, recv = k_RInfo, tmp1 = Rtmp1; 2536 assert_different_registers(obj, mdo, recv, tmp1); 2537 __ bind(profile_cast_success); 2538 jobject2reg(md->constant_encoding(), mdo); 2539 if (mdo_offset_bias > 0) { 2540 __ set(mdo_offset_bias, tmp1); 2541 __ add(mdo, tmp1, mdo); 2542 } 2543 __ load_klass(obj, recv); 2544 type_profile_helper(mdo, mdo_offset_bias, md, data, recv, tmp1, success); 2545 // Jump over the failure case 2546 __ ba(false, *success); 2547 __ delayed()->nop(); 2548 // Cast failure case 2549 __ bind(profile_cast_failure); 2550 jobject2reg(md->constant_encoding(), mdo); 2551 if (mdo_offset_bias > 0) { 2552 __ set(mdo_offset_bias, tmp1); 2553 __ add(mdo, tmp1, mdo); 2554 } 2555 Address data_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset()) - mdo_offset_bias); 2556 __ ld_ptr(data_addr, tmp1); 2557 __ sub(tmp1, DataLayout::counter_increment, tmp1); 2558 __ st_ptr(tmp1, data_addr); 2559 __ ba(false, *failure); 2560 __ delayed()->nop(); 2561 } 2562 __ ba(false, *success); 2563 __ delayed()->nop(); 2564 } 2565 2566 void LIR_Assembler::emit_opTypeCheck(LIR_OpTypeCheck* op) { 2567 LIR_Code code = op->code(); 2568 if (code == lir_store_check) { 2569 Register value = op->object()->as_register(); 2570 Register array = op->array()->as_register(); 2571 Register k_RInfo = op->tmp1()->as_register(); 2572 Register klass_RInfo = op->tmp2()->as_register(); 2573 Register Rtmp1 = op->tmp3()->as_register(); 2574 2575 __ verify_oop(value); 2576 CodeStub* stub = op->stub(); 2577 // check if it needs to be profiled 2578 ciMethodData* md; 2579 ciProfileData* data; 2580 int mdo_offset_bias = 0; 2581 if (op->should_profile()) { 2582 ciMethod* method = op->profiled_method(); 2583 assert(method != NULL, "Should have method"); 2584 setup_md_access(method, op->profiled_bci(), md, data, mdo_offset_bias); 2585 } 2586 Label profile_cast_success, profile_cast_failure, done; 2587 Label *success_target = op->should_profile() ? &profile_cast_success : &done; 2588 Label *failure_target = op->should_profile() ? &profile_cast_failure : stub->entry(); 2589 2590 if (op->should_profile()) { 2591 Label not_null; 2592 __ br_notnull(value, false, Assembler::pn, not_null); 2593 __ delayed()->nop(); 2594 Register mdo = k_RInfo; 2595 Register data_val = Rtmp1; 2596 jobject2reg(md->constant_encoding(), mdo); 2597 if (mdo_offset_bias > 0) { 2598 __ set(mdo_offset_bias, data_val); 2599 __ add(mdo, data_val, mdo); 2600 } 2601 Address flags_addr(mdo, md->byte_offset_of_slot(data, DataLayout::flags_offset()) - mdo_offset_bias); 2602 __ ldub(flags_addr, data_val); 2603 __ or3(data_val, BitData::null_seen_byte_constant(), data_val); 2604 __ stb(data_val, flags_addr); 2605 __ ba(false, done); 2606 __ delayed()->nop(); 2607 __ bind(not_null); 2608 } else { 2609 __ br_null(value, false, Assembler::pn, done); 2610 __ delayed()->nop(); 2611 } 2612 add_debug_info_for_null_check_here(op->info_for_exception()); 2613 __ load_klass(array, k_RInfo); 2614 __ load_klass(value, klass_RInfo); 2615 2616 // get instance klass 2617 __ ld_ptr(Address(k_RInfo, objArrayKlass::element_klass_offset_in_bytes() + sizeof(oopDesc)), k_RInfo); 2618 // perform the fast part of the checking logic 2619 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, O7, success_target, failure_target, NULL); 2620 2621 // call out-of-line instance of __ check_klass_subtype_slow_path(...): 2622 assert(klass_RInfo == G3 && k_RInfo == G1, "incorrect call setup"); 2623 __ call(Runtime1::entry_for(Runtime1::slow_subtype_check_id), relocInfo::runtime_call_type); 2624 __ delayed()->nop(); 2625 __ cmp(G3, 0); 2626 __ br(Assembler::equal, false, Assembler::pn, *failure_target); 2627 __ delayed()->nop(); 2628 // fall through to the success case 2629 2630 if (op->should_profile()) { 2631 Register mdo = klass_RInfo, recv = k_RInfo, tmp1 = Rtmp1; 2632 assert_different_registers(value, mdo, recv, tmp1); 2633 __ bind(profile_cast_success); 2634 jobject2reg(md->constant_encoding(), mdo); 2635 if (mdo_offset_bias > 0) { 2636 __ set(mdo_offset_bias, tmp1); 2637 __ add(mdo, tmp1, mdo); 2638 } 2639 __ load_klass(value, recv); 2640 type_profile_helper(mdo, mdo_offset_bias, md, data, recv, tmp1, &done); 2641 __ ba(false, done); 2642 __ delayed()->nop(); 2643 // Cast failure case 2644 __ bind(profile_cast_failure); 2645 jobject2reg(md->constant_encoding(), mdo); 2646 if (mdo_offset_bias > 0) { 2647 __ set(mdo_offset_bias, tmp1); 2648 __ add(mdo, tmp1, mdo); 2649 } 2650 Address data_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset()) - mdo_offset_bias); 2651 __ ld_ptr(data_addr, tmp1); 2652 __ sub(tmp1, DataLayout::counter_increment, tmp1); 2653 __ st_ptr(tmp1, data_addr); 2654 __ ba(false, *stub->entry()); 2655 __ delayed()->nop(); 2656 } 2657 __ bind(done); 2658 } else if (code == lir_checkcast) { 2659 Register obj = op->object()->as_register(); 2660 Register dst = op->result_opr()->as_register(); 2661 Label success; 2662 emit_typecheck_helper(op, &success, op->stub()->entry(), &success); 2663 __ bind(success); 2664 __ mov(obj, dst); 2665 } else if (code == lir_instanceof) { 2666 Register obj = op->object()->as_register(); 2667 Register dst = op->result_opr()->as_register(); 2668 Label success, failure, done; 2669 emit_typecheck_helper(op, &success, &failure, &failure); 2670 __ bind(failure); 2671 __ set(0, dst); 2672 __ ba(false, done); 2673 __ delayed()->nop(); 2674 __ bind(success); 2675 __ set(1, dst); 2676 __ bind(done); 2677 } else { 2678 ShouldNotReachHere(); 2679 } 2680 2681 } 2682 2683 2684 void LIR_Assembler::emit_compare_and_swap(LIR_OpCompareAndSwap* op) { 2685 if (op->code() == lir_cas_long) { 2686 assert(VM_Version::supports_cx8(), "wrong machine"); 2687 Register addr = op->addr()->as_pointer_register(); 2688 Register cmp_value_lo = op->cmp_value()->as_register_lo(); 2689 Register cmp_value_hi = op->cmp_value()->as_register_hi(); 2690 Register new_value_lo = op->new_value()->as_register_lo(); 2691 Register new_value_hi = op->new_value()->as_register_hi(); 2692 Register t1 = op->tmp1()->as_register(); 2693 Register t2 = op->tmp2()->as_register(); 2694 #ifdef _LP64 2695 __ mov(cmp_value_lo, t1); 2696 __ mov(new_value_lo, t2); 2697 // perform the compare and swap operation 2698 __ casx(addr, t1, t2); 2699 // generate condition code - if the swap succeeded, t2 ("new value" reg) was 2700 // overwritten with the original value in "addr" and will be equal to t1. 2701 __ cmp(t1, t2); 2702 #else 2703 // move high and low halves of long values into single registers 2704 __ sllx(cmp_value_hi, 32, t1); // shift high half into temp reg 2705 __ srl(cmp_value_lo, 0, cmp_value_lo); // clear upper 32 bits of low half 2706 __ or3(t1, cmp_value_lo, t1); // t1 holds 64-bit compare value 2707 __ sllx(new_value_hi, 32, t2); 2708 __ srl(new_value_lo, 0, new_value_lo); 2709 __ or3(t2, new_value_lo, t2); // t2 holds 64-bit value to swap 2710 // perform the compare and swap operation 2711 __ casx(addr, t1, t2); 2712 // generate condition code - if the swap succeeded, t2 ("new value" reg) was 2713 // overwritten with the original value in "addr" and will be equal to t1. 2714 // Produce icc flag for 32bit. 2715 __ sub(t1, t2, t2); 2716 __ srlx(t2, 32, t1); 2717 __ orcc(t2, t1, G0); 2718 #endif 2719 } else if (op->code() == lir_cas_int || op->code() == lir_cas_obj) { 2720 Register addr = op->addr()->as_pointer_register(); 2721 Register cmp_value = op->cmp_value()->as_register(); 2722 Register new_value = op->new_value()->as_register(); 2723 Register t1 = op->tmp1()->as_register(); 2724 Register t2 = op->tmp2()->as_register(); 2725 __ mov(cmp_value, t1); 2726 __ mov(new_value, t2); 2727 if (op->code() == lir_cas_obj) { 2728 if (UseCompressedOops) { 2729 __ encode_heap_oop(t1); 2730 __ encode_heap_oop(t2); 2731 __ cas(addr, t1, t2); 2732 } else { 2733 __ cas_ptr(addr, t1, t2); 2734 } 2735 } else { 2736 __ cas(addr, t1, t2); 2737 } 2738 __ cmp(t1, t2); 2739 } else { 2740 Unimplemented(); 2741 } 2742 } 2743 2744 void LIR_Assembler::set_24bit_FPU() { 2745 Unimplemented(); 2746 } 2747 2748 2749 void LIR_Assembler::reset_FPU() { 2750 Unimplemented(); 2751 } 2752 2753 2754 void LIR_Assembler::breakpoint() { 2755 __ breakpoint_trap(); 2756 } 2757 2758 2759 void LIR_Assembler::push(LIR_Opr opr) { 2760 Unimplemented(); 2761 } 2762 2763 2764 void LIR_Assembler::pop(LIR_Opr opr) { 2765 Unimplemented(); 2766 } 2767 2768 2769 void LIR_Assembler::monitor_address(int monitor_no, LIR_Opr dst_opr) { 2770 Address mon_addr = frame_map()->address_for_monitor_lock(monitor_no); 2771 Register dst = dst_opr->as_register(); 2772 Register reg = mon_addr.base(); 2773 int offset = mon_addr.disp(); 2774 // compute pointer to BasicLock 2775 if (mon_addr.is_simm13()) { 2776 __ add(reg, offset, dst); 2777 } else { 2778 __ set(offset, dst); 2779 __ add(dst, reg, dst); 2780 } 2781 } 2782 2783 2784 void LIR_Assembler::emit_lock(LIR_OpLock* op) { 2785 Register obj = op->obj_opr()->as_register(); 2786 Register hdr = op->hdr_opr()->as_register(); 2787 Register lock = op->lock_opr()->as_register(); 2788 2789 // obj may not be an oop 2790 if (op->code() == lir_lock) { 2791 MonitorEnterStub* stub = (MonitorEnterStub*)op->stub(); 2792 if (UseFastLocking) { 2793 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); 2794 // add debug info for NullPointerException only if one is possible 2795 if (op->info() != NULL) { 2796 add_debug_info_for_null_check_here(op->info()); 2797 } 2798 __ lock_object(hdr, obj, lock, op->scratch_opr()->as_register(), *op->stub()->entry()); 2799 } else { 2800 // always do slow locking 2801 // note: the slow locking code could be inlined here, however if we use 2802 // slow locking, speed doesn't matter anyway and this solution is 2803 // simpler and requires less duplicated code - additionally, the 2804 // slow locking code is the same in either case which simplifies 2805 // debugging 2806 __ br(Assembler::always, false, Assembler::pt, *op->stub()->entry()); 2807 __ delayed()->nop(); 2808 } 2809 } else { 2810 assert (op->code() == lir_unlock, "Invalid code, expected lir_unlock"); 2811 if (UseFastLocking) { 2812 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); 2813 __ unlock_object(hdr, obj, lock, *op->stub()->entry()); 2814 } else { 2815 // always do slow unlocking 2816 // note: the slow unlocking code could be inlined here, however if we use 2817 // slow unlocking, speed doesn't matter anyway and this solution is 2818 // simpler and requires less duplicated code - additionally, the 2819 // slow unlocking code is the same in either case which simplifies 2820 // debugging 2821 __ br(Assembler::always, false, Assembler::pt, *op->stub()->entry()); 2822 __ delayed()->nop(); 2823 } 2824 } 2825 __ bind(*op->stub()->continuation()); 2826 } 2827 2828 2829 void LIR_Assembler::emit_profile_call(LIR_OpProfileCall* op) { 2830 ciMethod* method = op->profiled_method(); 2831 int bci = op->profiled_bci(); 2832 2833 // Update counter for all call types 2834 ciMethodData* md = method->method_data_or_null(); 2835 assert(md != NULL, "Sanity"); 2836 ciProfileData* data = md->bci_to_data(bci); 2837 assert(data->is_CounterData(), "need CounterData for calls"); 2838 assert(op->mdo()->is_single_cpu(), "mdo must be allocated"); 2839 Register mdo = op->mdo()->as_register(); 2840 #ifdef _LP64 2841 assert(op->tmp1()->is_double_cpu(), "tmp1 must be allocated"); 2842 Register tmp1 = op->tmp1()->as_register_lo(); 2843 #else 2844 assert(op->tmp1()->is_single_cpu(), "tmp1 must be allocated"); 2845 Register tmp1 = op->tmp1()->as_register(); 2846 #endif 2847 jobject2reg(md->constant_encoding(), mdo); 2848 int mdo_offset_bias = 0; 2849 if (!Assembler::is_simm13(md->byte_offset_of_slot(data, CounterData::count_offset()) + 2850 data->size_in_bytes())) { 2851 // The offset is large so bias the mdo by the base of the slot so 2852 // that the ld can use simm13s to reference the slots of the data 2853 mdo_offset_bias = md->byte_offset_of_slot(data, CounterData::count_offset()); 2854 __ set(mdo_offset_bias, O7); 2855 __ add(mdo, O7, mdo); 2856 } 2857 2858 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset()) - mdo_offset_bias); 2859 Bytecodes::Code bc = method->java_code_at_bci(bci); 2860 // Perform additional virtual call profiling for invokevirtual and 2861 // invokeinterface bytecodes 2862 if ((bc == Bytecodes::_invokevirtual || bc == Bytecodes::_invokeinterface) && 2863 C1ProfileVirtualCalls) { 2864 assert(op->recv()->is_single_cpu(), "recv must be allocated"); 2865 Register recv = op->recv()->as_register(); 2866 assert_different_registers(mdo, tmp1, recv); 2867 assert(data->is_VirtualCallData(), "need VirtualCallData for virtual calls"); 2868 ciKlass* known_klass = op->known_holder(); 2869 if (C1OptimizeVirtualCallProfiling && known_klass != NULL) { 2870 // We know the type that will be seen at this call site; we can 2871 // statically update the methodDataOop rather than needing to do 2872 // dynamic tests on the receiver type 2873 2874 // NOTE: we should probably put a lock around this search to 2875 // avoid collisions by concurrent compilations 2876 ciVirtualCallData* vc_data = (ciVirtualCallData*) data; 2877 uint i; 2878 for (i = 0; i < VirtualCallData::row_limit(); i++) { 2879 ciKlass* receiver = vc_data->receiver(i); 2880 if (known_klass->equals(receiver)) { 2881 Address data_addr(mdo, md->byte_offset_of_slot(data, 2882 VirtualCallData::receiver_count_offset(i)) - 2883 mdo_offset_bias); 2884 __ ld_ptr(data_addr, tmp1); 2885 __ add(tmp1, DataLayout::counter_increment, tmp1); 2886 __ st_ptr(tmp1, data_addr); 2887 return; 2888 } 2889 } 2890 2891 // Receiver type not found in profile data; select an empty slot 2892 2893 // Note that this is less efficient than it should be because it 2894 // always does a write to the receiver part of the 2895 // VirtualCallData rather than just the first time 2896 for (i = 0; i < VirtualCallData::row_limit(); i++) { 2897 ciKlass* receiver = vc_data->receiver(i); 2898 if (receiver == NULL) { 2899 Address recv_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_offset(i)) - 2900 mdo_offset_bias); 2901 jobject2reg(known_klass->constant_encoding(), tmp1); 2902 __ st_ptr(tmp1, recv_addr); 2903 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i)) - 2904 mdo_offset_bias); 2905 __ ld_ptr(data_addr, tmp1); 2906 __ add(tmp1, DataLayout::counter_increment, tmp1); 2907 __ st_ptr(tmp1, data_addr); 2908 return; 2909 } 2910 } 2911 } else { 2912 __ load_klass(recv, recv); 2913 Label update_done; 2914 type_profile_helper(mdo, mdo_offset_bias, md, data, recv, tmp1, &update_done); 2915 // Receiver did not match any saved receiver and there is no empty row for it. 2916 // Increment total counter to indicate polymorphic case. 2917 __ ld_ptr(counter_addr, tmp1); 2918 __ add(tmp1, DataLayout::counter_increment, tmp1); 2919 __ st_ptr(tmp1, counter_addr); 2920 2921 __ bind(update_done); 2922 } 2923 } else { 2924 // Static call 2925 __ ld_ptr(counter_addr, tmp1); 2926 __ add(tmp1, DataLayout::counter_increment, tmp1); 2927 __ st_ptr(tmp1, counter_addr); 2928 } 2929 } 2930 2931 void LIR_Assembler::align_backward_branch_target() { 2932 __ align(OptoLoopAlignment); 2933 } 2934 2935 2936 void LIR_Assembler::emit_delay(LIR_OpDelay* op) { 2937 // make sure we are expecting a delay 2938 // this has the side effect of clearing the delay state 2939 // so we can use _masm instead of _masm->delayed() to do the 2940 // code generation. 2941 __ delayed(); 2942 2943 // make sure we only emit one instruction 2944 int offset = code_offset(); 2945 op->delay_op()->emit_code(this); 2946 #ifdef ASSERT 2947 if (code_offset() - offset != NativeInstruction::nop_instruction_size) { 2948 op->delay_op()->print(); 2949 } 2950 assert(code_offset() - offset == NativeInstruction::nop_instruction_size, 2951 "only one instruction can go in a delay slot"); 2952 #endif 2953 2954 // we may also be emitting the call info for the instruction 2955 // which we are the delay slot of. 2956 CodeEmitInfo* call_info = op->call_info(); 2957 if (call_info) { 2958 add_call_info(code_offset(), call_info); 2959 } 2960 2961 if (VerifyStackAtCalls) { 2962 _masm->sub(FP, SP, O7); 2963 _masm->cmp(O7, initial_frame_size_in_bytes()); 2964 _masm->trap(Assembler::notEqual, Assembler::ptr_cc, G0, ST_RESERVED_FOR_USER_0+2 ); 2965 } 2966 } 2967 2968 2969 void LIR_Assembler::negate(LIR_Opr left, LIR_Opr dest) { 2970 assert(left->is_register(), "can only handle registers"); 2971 2972 if (left->is_single_cpu()) { 2973 __ neg(left->as_register(), dest->as_register()); 2974 } else if (left->is_single_fpu()) { 2975 __ fneg(FloatRegisterImpl::S, left->as_float_reg(), dest->as_float_reg()); 2976 } else if (left->is_double_fpu()) { 2977 __ fneg(FloatRegisterImpl::D, left->as_double_reg(), dest->as_double_reg()); 2978 } else { 2979 assert (left->is_double_cpu(), "Must be a long"); 2980 Register Rlow = left->as_register_lo(); 2981 Register Rhi = left->as_register_hi(); 2982 #ifdef _LP64 2983 __ sub(G0, Rlow, dest->as_register_lo()); 2984 #else 2985 __ subcc(G0, Rlow, dest->as_register_lo()); 2986 __ subc (G0, Rhi, dest->as_register_hi()); 2987 #endif 2988 } 2989 } 2990 2991 2992 void LIR_Assembler::fxch(int i) { 2993 Unimplemented(); 2994 } 2995 2996 void LIR_Assembler::fld(int i) { 2997 Unimplemented(); 2998 } 2999 3000 void LIR_Assembler::ffree(int i) { 3001 Unimplemented(); 3002 } 3003 3004 void LIR_Assembler::rt_call(LIR_Opr result, address dest, 3005 const LIR_OprList* args, LIR_Opr tmp, CodeEmitInfo* info) { 3006 3007 // if tmp is invalid, then the function being called doesn't destroy the thread 3008 if (tmp->is_valid()) { 3009 __ save_thread(tmp->as_register()); 3010 } 3011 __ call(dest, relocInfo::runtime_call_type); 3012 __ delayed()->nop(); 3013 if (info != NULL) { 3014 add_call_info_here(info); 3015 } 3016 if (tmp->is_valid()) { 3017 __ restore_thread(tmp->as_register()); 3018 } 3019 3020 #ifdef ASSERT 3021 __ verify_thread(); 3022 #endif // ASSERT 3023 } 3024 3025 3026 void LIR_Assembler::volatile_move_op(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info) { 3027 #ifdef _LP64 3028 ShouldNotReachHere(); 3029 #endif 3030 3031 NEEDS_CLEANUP; 3032 if (type == T_LONG) { 3033 LIR_Address* mem_addr = dest->is_address() ? dest->as_address_ptr() : src->as_address_ptr(); 3034 3035 // (extended to allow indexed as well as constant displaced for JSR-166) 3036 Register idx = noreg; // contains either constant offset or index 3037 3038 int disp = mem_addr->disp(); 3039 if (mem_addr->index() == LIR_OprFact::illegalOpr) { 3040 if (!Assembler::is_simm13(disp)) { 3041 idx = O7; 3042 __ set(disp, idx); 3043 } 3044 } else { 3045 assert(disp == 0, "not both indexed and disp"); 3046 idx = mem_addr->index()->as_register(); 3047 } 3048 3049 int null_check_offset = -1; 3050 3051 Register base = mem_addr->base()->as_register(); 3052 if (src->is_register() && dest->is_address()) { 3053 // G4 is high half, G5 is low half 3054 if (VM_Version::v9_instructions_work()) { 3055 // clear the top bits of G5, and scale up G4 3056 __ srl (src->as_register_lo(), 0, G5); 3057 __ sllx(src->as_register_hi(), 32, G4); 3058 // combine the two halves into the 64 bits of G4 3059 __ or3(G4, G5, G4); 3060 null_check_offset = __ offset(); 3061 if (idx == noreg) { 3062 __ stx(G4, base, disp); 3063 } else { 3064 __ stx(G4, base, idx); 3065 } 3066 } else { 3067 __ mov (src->as_register_hi(), G4); 3068 __ mov (src->as_register_lo(), G5); 3069 null_check_offset = __ offset(); 3070 if (idx == noreg) { 3071 __ std(G4, base, disp); 3072 } else { 3073 __ std(G4, base, idx); 3074 } 3075 } 3076 } else if (src->is_address() && dest->is_register()) { 3077 null_check_offset = __ offset(); 3078 if (VM_Version::v9_instructions_work()) { 3079 if (idx == noreg) { 3080 __ ldx(base, disp, G5); 3081 } else { 3082 __ ldx(base, idx, G5); 3083 } 3084 __ srax(G5, 32, dest->as_register_hi()); // fetch the high half into hi 3085 __ mov (G5, dest->as_register_lo()); // copy low half into lo 3086 } else { 3087 if (idx == noreg) { 3088 __ ldd(base, disp, G4); 3089 } else { 3090 __ ldd(base, idx, G4); 3091 } 3092 // G4 is high half, G5 is low half 3093 __ mov (G4, dest->as_register_hi()); 3094 __ mov (G5, dest->as_register_lo()); 3095 } 3096 } else { 3097 Unimplemented(); 3098 } 3099 if (info != NULL) { 3100 add_debug_info_for_null_check(null_check_offset, info); 3101 } 3102 3103 } else { 3104 // use normal move for all other volatiles since they don't need 3105 // special handling to remain atomic. 3106 move_op(src, dest, type, lir_patch_none, info, false, false, false); 3107 } 3108 } 3109 3110 void LIR_Assembler::membar() { 3111 // only StoreLoad membars are ever explicitly needed on sparcs in TSO mode 3112 __ membar( Assembler::Membar_mask_bits(Assembler::StoreLoad) ); 3113 } 3114 3115 void LIR_Assembler::membar_acquire() { 3116 // no-op on TSO 3117 } 3118 3119 void LIR_Assembler::membar_release() { 3120 // no-op on TSO 3121 } 3122 3123 // Pack two sequential registers containing 32 bit values 3124 // into a single 64 bit register. 3125 // src and src->successor() are packed into dst 3126 // src and dst may be the same register. 3127 // Note: src is destroyed 3128 void LIR_Assembler::pack64(LIR_Opr src, LIR_Opr dst) { 3129 Register rs = src->as_register(); 3130 Register rd = dst->as_register_lo(); 3131 __ sllx(rs, 32, rs); 3132 __ srl(rs->successor(), 0, rs->successor()); 3133 __ or3(rs, rs->successor(), rd); 3134 } 3135 3136 // Unpack a 64 bit value in a register into 3137 // two sequential registers. 3138 // src is unpacked into dst and dst->successor() 3139 void LIR_Assembler::unpack64(LIR_Opr src, LIR_Opr dst) { 3140 Register rs = src->as_register_lo(); 3141 Register rd = dst->as_register_hi(); 3142 assert_different_registers(rs, rd, rd->successor()); 3143 __ srlx(rs, 32, rd); 3144 __ srl (rs, 0, rd->successor()); 3145 } 3146 3147 3148 void LIR_Assembler::leal(LIR_Opr addr_opr, LIR_Opr dest) { 3149 LIR_Address* addr = addr_opr->as_address_ptr(); 3150 assert(addr->index()->is_illegal() && addr->scale() == LIR_Address::times_1 && Assembler::is_simm13(addr->disp()), "can't handle complex addresses yet"); 3151 3152 __ add(addr->base()->as_pointer_register(), addr->disp(), dest->as_pointer_register()); 3153 } 3154 3155 3156 void LIR_Assembler::get_thread(LIR_Opr result_reg) { 3157 assert(result_reg->is_register(), "check"); 3158 __ mov(G2_thread, result_reg->as_register()); 3159 } 3160 3161 3162 void LIR_Assembler::peephole(LIR_List* lir) { 3163 LIR_OpList* inst = lir->instructions_list(); 3164 for (int i = 0; i < inst->length(); i++) { 3165 LIR_Op* op = inst->at(i); 3166 switch (op->code()) { 3167 case lir_cond_float_branch: 3168 case lir_branch: { 3169 LIR_OpBranch* branch = op->as_OpBranch(); 3170 assert(branch->info() == NULL, "shouldn't be state on branches anymore"); 3171 LIR_Op* delay_op = NULL; 3172 // we'd like to be able to pull following instructions into 3173 // this slot but we don't know enough to do it safely yet so 3174 // only optimize block to block control flow. 3175 if (LIRFillDelaySlots && branch->block()) { 3176 LIR_Op* prev = inst->at(i - 1); 3177 if (prev && LIR_Assembler::is_single_instruction(prev) && prev->info() == NULL) { 3178 // swap previous instruction into delay slot 3179 inst->at_put(i - 1, op); 3180 inst->at_put(i, new LIR_OpDelay(prev, op->info())); 3181 #ifndef PRODUCT 3182 if (LIRTracePeephole) { 3183 tty->print_cr("delayed"); 3184 inst->at(i - 1)->print(); 3185 inst->at(i)->print(); 3186 tty->cr(); 3187 } 3188 #endif 3189 continue; 3190 } 3191 } 3192 3193 if (!delay_op) { 3194 delay_op = new LIR_OpDelay(new LIR_Op0(lir_nop), NULL); 3195 } 3196 inst->insert_before(i + 1, delay_op); 3197 break; 3198 } 3199 case lir_static_call: 3200 case lir_virtual_call: 3201 case lir_icvirtual_call: 3202 case lir_optvirtual_call: 3203 case lir_dynamic_call: { 3204 LIR_Op* prev = inst->at(i - 1); 3205 if (LIRFillDelaySlots && prev && prev->code() == lir_move && prev->info() == NULL && 3206 (op->code() != lir_virtual_call || 3207 !prev->result_opr()->is_single_cpu() || 3208 prev->result_opr()->as_register() != O0) && 3209 LIR_Assembler::is_single_instruction(prev)) { 3210 // Only moves without info can be put into the delay slot. 3211 // Also don't allow the setup of the receiver in the delay 3212 // slot for vtable calls. 3213 inst->at_put(i - 1, op); 3214 inst->at_put(i, new LIR_OpDelay(prev, op->info())); 3215 #ifndef PRODUCT 3216 if (LIRTracePeephole) { 3217 tty->print_cr("delayed"); 3218 inst->at(i - 1)->print(); 3219 inst->at(i)->print(); 3220 tty->cr(); 3221 } 3222 #endif 3223 } else { 3224 LIR_Op* delay_op = new LIR_OpDelay(new LIR_Op0(lir_nop), op->as_OpJavaCall()->info()); 3225 inst->insert_before(i + 1, delay_op); 3226 i++; 3227 } 3228 3229 #if defined(TIERED) && !defined(_LP64) 3230 // fixup the return value from G1 to O0/O1 for long returns. 3231 // It's done here instead of in LIRGenerator because there's 3232 // such a mismatch between the single reg and double reg 3233 // calling convention. 3234 LIR_OpJavaCall* callop = op->as_OpJavaCall(); 3235 if (callop->result_opr() == FrameMap::out_long_opr) { 3236 LIR_OpJavaCall* call; 3237 LIR_OprList* arguments = new LIR_OprList(callop->arguments()->length()); 3238 for (int a = 0; a < arguments->length(); a++) { 3239 arguments[a] = callop->arguments()[a]; 3240 } 3241 if (op->code() == lir_virtual_call) { 3242 call = new LIR_OpJavaCall(op->code(), callop->method(), callop->receiver(), FrameMap::g1_long_single_opr, 3243 callop->vtable_offset(), arguments, callop->info()); 3244 } else { 3245 call = new LIR_OpJavaCall(op->code(), callop->method(), callop->receiver(), FrameMap::g1_long_single_opr, 3246 callop->addr(), arguments, callop->info()); 3247 } 3248 inst->at_put(i - 1, call); 3249 inst->insert_before(i + 1, new LIR_Op1(lir_unpack64, FrameMap::g1_long_single_opr, callop->result_opr(), 3250 T_LONG, lir_patch_none, NULL)); 3251 } 3252 #endif 3253 break; 3254 } 3255 } 3256 } 3257 } 3258 3259 3260 3261 3262 #undef __