1 /* 2 * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 # include "incls/_precompiled.incl" 26 # include "incls/_c1_LIRAssembler_sparc.cpp.incl" 27 28 #define __ _masm-> 29 30 31 //------------------------------------------------------------ 32 33 34 bool LIR_Assembler::is_small_constant(LIR_Opr opr) { 35 if (opr->is_constant()) { 36 LIR_Const* constant = opr->as_constant_ptr(); 37 switch (constant->type()) { 38 case T_INT: { 39 jint value = constant->as_jint(); 40 return Assembler::is_simm13(value); 41 } 42 43 default: 44 return false; 45 } 46 } 47 return false; 48 } 49 50 51 bool LIR_Assembler::is_single_instruction(LIR_Op* op) { 52 switch (op->code()) { 53 case lir_null_check: 54 return true; 55 56 57 case lir_add: 58 case lir_ushr: 59 case lir_shr: 60 case lir_shl: 61 // integer shifts and adds are always one instruction 62 return op->result_opr()->is_single_cpu(); 63 64 65 case lir_move: { 66 LIR_Op1* op1 = op->as_Op1(); 67 LIR_Opr src = op1->in_opr(); 68 LIR_Opr dst = op1->result_opr(); 69 70 if (src == dst) { 71 NEEDS_CLEANUP; 72 // this works around a problem where moves with the same src and dst 73 // end up in the delay slot and then the assembler swallows the mov 74 // since it has no effect and then it complains because the delay slot 75 // is empty. returning false stops the optimizer from putting this in 76 // the delay slot 77 return false; 78 } 79 80 // don't put moves involving oops into the delay slot since the VerifyOops code 81 // will make it much larger than a single instruction. 82 if (VerifyOops) { 83 return false; 84 } 85 86 if (src->is_double_cpu() || dst->is_double_cpu() || op1->patch_code() != lir_patch_none || 87 ((src->is_double_fpu() || dst->is_double_fpu()) && op1->move_kind() != lir_move_normal)) { 88 return false; 89 } 90 91 if (dst->is_register()) { 92 if (src->is_address() && Assembler::is_simm13(src->as_address_ptr()->disp())) { 93 return !PatchALot; 94 } else if (src->is_single_stack()) { 95 return true; 96 } 97 } 98 99 if (src->is_register()) { 100 if (dst->is_address() && Assembler::is_simm13(dst->as_address_ptr()->disp())) { 101 return !PatchALot; 102 } else if (dst->is_single_stack()) { 103 return true; 104 } 105 } 106 107 if (dst->is_register() && 108 ((src->is_register() && src->is_single_word() && src->is_same_type(dst)) || 109 (src->is_constant() && LIR_Assembler::is_small_constant(op->as_Op1()->in_opr())))) { 110 return true; 111 } 112 113 return false; 114 } 115 116 default: 117 return false; 118 } 119 ShouldNotReachHere(); 120 } 121 122 123 LIR_Opr LIR_Assembler::receiverOpr() { 124 return FrameMap::O0_oop_opr; 125 } 126 127 128 LIR_Opr LIR_Assembler::incomingReceiverOpr() { 129 return FrameMap::I0_oop_opr; 130 } 131 132 133 LIR_Opr LIR_Assembler::osrBufferPointer() { 134 return FrameMap::I0_opr; 135 } 136 137 138 int LIR_Assembler::initial_frame_size_in_bytes() { 139 return in_bytes(frame_map()->framesize_in_bytes()); 140 } 141 142 143 // inline cache check: the inline cached class is in G5_inline_cache_reg(G5); 144 // we fetch the class of the receiver (O0) and compare it with the cached class. 145 // If they do not match we jump to slow case. 146 int LIR_Assembler::check_icache() { 147 int offset = __ offset(); 148 __ inline_cache_check(O0, G5_inline_cache_reg); 149 return offset; 150 } 151 152 153 void LIR_Assembler::osr_entry() { 154 // On-stack-replacement entry sequence (interpreter frame layout described in interpreter_sparc.cpp): 155 // 156 // 1. Create a new compiled activation. 157 // 2. Initialize local variables in the compiled activation. The expression stack must be empty 158 // at the osr_bci; it is not initialized. 159 // 3. Jump to the continuation address in compiled code to resume execution. 160 161 // OSR entry point 162 offsets()->set_value(CodeOffsets::OSR_Entry, code_offset()); 163 BlockBegin* osr_entry = compilation()->hir()->osr_entry(); 164 ValueStack* entry_state = osr_entry->end()->state(); 165 int number_of_locks = entry_state->locks_size(); 166 167 // Create a frame for the compiled activation. 168 __ build_frame(initial_frame_size_in_bytes()); 169 170 // OSR buffer is 171 // 172 // locals[nlocals-1..0] 173 // monitors[number_of_locks-1..0] 174 // 175 // locals is a direct copy of the interpreter frame so in the osr buffer 176 // so first slot in the local array is the last local from the interpreter 177 // and last slot is local[0] (receiver) from the interpreter 178 // 179 // Similarly with locks. The first lock slot in the osr buffer is the nth lock 180 // from the interpreter frame, the nth lock slot in the osr buffer is 0th lock 181 // in the interpreter frame (the method lock if a sync method) 182 183 // Initialize monitors in the compiled activation. 184 // I0: pointer to osr buffer 185 // 186 // All other registers are dead at this point and the locals will be 187 // copied into place by code emitted in the IR. 188 189 Register OSR_buf = osrBufferPointer()->as_register(); 190 { assert(frame::interpreter_frame_monitor_size() == BasicObjectLock::size(), "adjust code below"); 191 int monitor_offset = BytesPerWord * method()->max_locals() + 192 (2 * BytesPerWord) * (number_of_locks - 1); 193 // SharedRuntime::OSR_migration_begin() packs BasicObjectLocks in 194 // the OSR buffer using 2 word entries: first the lock and then 195 // the oop. 196 for (int i = 0; i < number_of_locks; i++) { 197 int slot_offset = monitor_offset - ((i * 2) * BytesPerWord); 198 #ifdef ASSERT 199 // verify the interpreter's monitor has a non-null object 200 { 201 Label L; 202 __ ld_ptr(OSR_buf, slot_offset + 1*BytesPerWord, O7); 203 __ cmp(G0, O7); 204 __ br(Assembler::notEqual, false, Assembler::pt, L); 205 __ delayed()->nop(); 206 __ stop("locked object is NULL"); 207 __ bind(L); 208 } 209 #endif // ASSERT 210 // Copy the lock field into the compiled activation. 211 __ ld_ptr(OSR_buf, slot_offset + 0, O7); 212 __ st_ptr(O7, frame_map()->address_for_monitor_lock(i)); 213 __ ld_ptr(OSR_buf, slot_offset + 1*BytesPerWord, O7); 214 __ st_ptr(O7, frame_map()->address_for_monitor_object(i)); 215 } 216 } 217 } 218 219 220 // Optimized Library calls 221 // This is the fast version of java.lang.String.compare; it has not 222 // OSR-entry and therefore, we generate a slow version for OSR's 223 void LIR_Assembler::emit_string_compare(LIR_Opr left, LIR_Opr right, LIR_Opr dst, CodeEmitInfo* info) { 224 Register str0 = left->as_register(); 225 Register str1 = right->as_register(); 226 227 Label Ldone; 228 229 Register result = dst->as_register(); 230 { 231 // Get a pointer to the first character of string0 in tmp0 and get string0.count in str0 232 // Get a pointer to the first character of string1 in tmp1 and get string1.count in str1 233 // Also, get string0.count-string1.count in o7 and get the condition code set 234 // Note: some instructions have been hoisted for better instruction scheduling 235 236 Register tmp0 = L0; 237 Register tmp1 = L1; 238 Register tmp2 = L2; 239 240 int value_offset = java_lang_String:: value_offset_in_bytes(); // char array 241 int offset_offset = java_lang_String::offset_offset_in_bytes(); // first character position 242 int count_offset = java_lang_String:: count_offset_in_bytes(); 243 244 __ ld_ptr(str0, value_offset, tmp0); 245 __ ld(str0, offset_offset, tmp2); 246 __ add(tmp0, arrayOopDesc::base_offset_in_bytes(T_CHAR), tmp0); 247 __ ld(str0, count_offset, str0); 248 __ sll(tmp2, exact_log2(sizeof(jchar)), tmp2); 249 250 // str1 may be null 251 add_debug_info_for_null_check_here(info); 252 253 __ ld_ptr(str1, value_offset, tmp1); 254 __ add(tmp0, tmp2, tmp0); 255 256 __ ld(str1, offset_offset, tmp2); 257 __ add(tmp1, arrayOopDesc::base_offset_in_bytes(T_CHAR), tmp1); 258 __ ld(str1, count_offset, str1); 259 __ sll(tmp2, exact_log2(sizeof(jchar)), tmp2); 260 __ subcc(str0, str1, O7); 261 __ add(tmp1, tmp2, tmp1); 262 } 263 264 { 265 // Compute the minimum of the string lengths, scale it and store it in limit 266 Register count0 = I0; 267 Register count1 = I1; 268 Register limit = L3; 269 270 Label Lskip; 271 __ sll(count0, exact_log2(sizeof(jchar)), limit); // string0 is shorter 272 __ br(Assembler::greater, true, Assembler::pt, Lskip); 273 __ delayed()->sll(count1, exact_log2(sizeof(jchar)), limit); // string1 is shorter 274 __ bind(Lskip); 275 276 // If either string is empty (or both of them) the result is the difference in lengths 277 __ cmp(limit, 0); 278 __ br(Assembler::equal, true, Assembler::pn, Ldone); 279 __ delayed()->mov(O7, result); // result is difference in lengths 280 } 281 282 { 283 // Neither string is empty 284 Label Lloop; 285 286 Register base0 = L0; 287 Register base1 = L1; 288 Register chr0 = I0; 289 Register chr1 = I1; 290 Register limit = L3; 291 292 // Shift base0 and base1 to the end of the arrays, negate limit 293 __ add(base0, limit, base0); 294 __ add(base1, limit, base1); 295 __ neg(limit); // limit = -min{string0.count, strin1.count} 296 297 __ lduh(base0, limit, chr0); 298 __ bind(Lloop); 299 __ lduh(base1, limit, chr1); 300 __ subcc(chr0, chr1, chr0); 301 __ br(Assembler::notZero, false, Assembler::pn, Ldone); 302 assert(chr0 == result, "result must be pre-placed"); 303 __ delayed()->inccc(limit, sizeof(jchar)); 304 __ br(Assembler::notZero, true, Assembler::pt, Lloop); 305 __ delayed()->lduh(base0, limit, chr0); 306 } 307 308 // If strings are equal up to min length, return the length difference. 309 __ mov(O7, result); 310 311 // Otherwise, return the difference between the first mismatched chars. 312 __ bind(Ldone); 313 } 314 315 316 // -------------------------------------------------------------------------------------------- 317 318 void LIR_Assembler::monitorexit(LIR_Opr obj_opr, LIR_Opr lock_opr, Register hdr, int monitor_no) { 319 if (!GenerateSynchronizationCode) return; 320 321 Register obj_reg = obj_opr->as_register(); 322 Register lock_reg = lock_opr->as_register(); 323 324 Address mon_addr = frame_map()->address_for_monitor_lock(monitor_no); 325 Register reg = mon_addr.base(); 326 int offset = mon_addr.disp(); 327 // compute pointer to BasicLock 328 if (mon_addr.is_simm13()) { 329 __ add(reg, offset, lock_reg); 330 } 331 else { 332 __ set(offset, lock_reg); 333 __ add(reg, lock_reg, lock_reg); 334 } 335 // unlock object 336 MonitorAccessStub* slow_case = new MonitorExitStub(lock_opr, UseFastLocking, monitor_no); 337 // _slow_case_stubs->append(slow_case); 338 // temporary fix: must be created after exceptionhandler, therefore as call stub 339 _slow_case_stubs->append(slow_case); 340 if (UseFastLocking) { 341 // try inlined fast unlocking first, revert to slow locking if it fails 342 // note: lock_reg points to the displaced header since the displaced header offset is 0! 343 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); 344 __ unlock_object(hdr, obj_reg, lock_reg, *slow_case->entry()); 345 } else { 346 // always do slow unlocking 347 // note: the slow unlocking code could be inlined here, however if we use 348 // slow unlocking, speed doesn't matter anyway and this solution is 349 // simpler and requires less duplicated code - additionally, the 350 // slow unlocking code is the same in either case which simplifies 351 // debugging 352 __ br(Assembler::always, false, Assembler::pt, *slow_case->entry()); 353 __ delayed()->nop(); 354 } 355 // done 356 __ bind(*slow_case->continuation()); 357 } 358 359 360 int LIR_Assembler::emit_exception_handler() { 361 // if the last instruction is a call (typically to do a throw which 362 // is coming at the end after block reordering) the return address 363 // must still point into the code area in order to avoid assertion 364 // failures when searching for the corresponding bci => add a nop 365 // (was bug 5/14/1999 - gri) 366 __ nop(); 367 368 // generate code for exception handler 369 ciMethod* method = compilation()->method(); 370 371 address handler_base = __ start_a_stub(exception_handler_size); 372 373 if (handler_base == NULL) { 374 // not enough space left for the handler 375 bailout("exception handler overflow"); 376 return -1; 377 } 378 379 int offset = code_offset(); 380 381 __ call(Runtime1::entry_for(Runtime1::handle_exception_id), relocInfo::runtime_call_type); 382 __ delayed()->nop(); 383 debug_only(__ stop("should have gone to the caller");) 384 assert(code_offset() - offset <= exception_handler_size, "overflow"); 385 __ end_a_stub(); 386 387 return offset; 388 } 389 390 391 // Emit the code to remove the frame from the stack in the exception 392 // unwind path. 393 int LIR_Assembler::emit_unwind_handler() { 394 #ifndef PRODUCT 395 if (CommentedAssembly) { 396 _masm->block_comment("Unwind handler"); 397 } 398 #endif 399 400 int offset = code_offset(); 401 402 // Fetch the exception from TLS and clear out exception related thread state 403 __ ld_ptr(G2_thread, in_bytes(JavaThread::exception_oop_offset()), O0); 404 __ st_ptr(G0, G2_thread, in_bytes(JavaThread::exception_oop_offset())); 405 __ st_ptr(G0, G2_thread, in_bytes(JavaThread::exception_pc_offset())); 406 407 __ bind(_unwind_handler_entry); 408 __ verify_not_null_oop(O0); 409 if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) { 410 __ mov(O0, I0); // Preserve the exception 411 } 412 413 // Preform needed unlocking 414 MonitorExitStub* stub = NULL; 415 if (method()->is_synchronized()) { 416 monitor_address(0, FrameMap::I1_opr); 417 stub = new MonitorExitStub(FrameMap::I1_opr, true, 0); 418 __ unlock_object(I3, I2, I1, *stub->entry()); 419 __ bind(*stub->continuation()); 420 } 421 422 if (compilation()->env()->dtrace_method_probes()) { 423 jobject2reg(method()->constant_encoding(), O0); 424 __ call(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), relocInfo::runtime_call_type); 425 __ delayed()->nop(); 426 } 427 428 if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) { 429 __ mov(I0, O0); // Restore the exception 430 } 431 432 // dispatch to the unwind logic 433 __ call(Runtime1::entry_for(Runtime1::unwind_exception_id), relocInfo::runtime_call_type); 434 __ delayed()->nop(); 435 436 // Emit the slow path assembly 437 if (stub != NULL) { 438 stub->emit_code(this); 439 } 440 441 return offset; 442 } 443 444 445 int LIR_Assembler::emit_deopt_handler() { 446 // if the last instruction is a call (typically to do a throw which 447 // is coming at the end after block reordering) the return address 448 // must still point into the code area in order to avoid assertion 449 // failures when searching for the corresponding bci => add a nop 450 // (was bug 5/14/1999 - gri) 451 __ nop(); 452 453 // generate code for deopt handler 454 ciMethod* method = compilation()->method(); 455 address handler_base = __ start_a_stub(deopt_handler_size); 456 if (handler_base == NULL) { 457 // not enough space left for the handler 458 bailout("deopt handler overflow"); 459 return -1; 460 } 461 462 int offset = code_offset(); 463 AddressLiteral deopt_blob(SharedRuntime::deopt_blob()->unpack()); 464 __ JUMP(deopt_blob, G3_scratch, 0); // sethi;jmp 465 __ delayed()->nop(); 466 assert(code_offset() - offset <= deopt_handler_size, "overflow"); 467 debug_only(__ stop("should have gone to the caller");) 468 __ end_a_stub(); 469 470 return offset; 471 } 472 473 474 void LIR_Assembler::jobject2reg(jobject o, Register reg) { 475 if (o == NULL) { 476 __ set(NULL_WORD, reg); 477 } else { 478 int oop_index = __ oop_recorder()->find_index(o); 479 RelocationHolder rspec = oop_Relocation::spec(oop_index); 480 __ set(NULL_WORD, reg, rspec); // Will be set when the nmethod is created 481 } 482 } 483 484 485 void LIR_Assembler::jobject2reg_with_patching(Register reg, CodeEmitInfo *info) { 486 // Allocate a new index in oop table to hold the oop once it's been patched 487 int oop_index = __ oop_recorder()->allocate_index((jobject)NULL); 488 PatchingStub* patch = new PatchingStub(_masm, PatchingStub::load_klass_id, oop_index); 489 490 AddressLiteral addrlit(NULL, oop_Relocation::spec(oop_index)); 491 assert(addrlit.rspec().type() == relocInfo::oop_type, "must be an oop reloc"); 492 // It may not seem necessary to use a sethi/add pair to load a NULL into dest, but the 493 // NULL will be dynamically patched later and the patched value may be large. We must 494 // therefore generate the sethi/add as a placeholders 495 __ patchable_set(addrlit, reg); 496 497 patching_epilog(patch, lir_patch_normal, reg, info); 498 } 499 500 501 void LIR_Assembler::emit_op3(LIR_Op3* op) { 502 Register Rdividend = op->in_opr1()->as_register(); 503 Register Rdivisor = noreg; 504 Register Rscratch = op->in_opr3()->as_register(); 505 Register Rresult = op->result_opr()->as_register(); 506 int divisor = -1; 507 508 if (op->in_opr2()->is_register()) { 509 Rdivisor = op->in_opr2()->as_register(); 510 } else { 511 divisor = op->in_opr2()->as_constant_ptr()->as_jint(); 512 assert(Assembler::is_simm13(divisor), "can only handle simm13"); 513 } 514 515 assert(Rdividend != Rscratch, ""); 516 assert(Rdivisor != Rscratch, ""); 517 assert(op->code() == lir_idiv || op->code() == lir_irem, "Must be irem or idiv"); 518 519 if (Rdivisor == noreg && is_power_of_2(divisor)) { 520 // convert division by a power of two into some shifts and logical operations 521 if (op->code() == lir_idiv) { 522 if (divisor == 2) { 523 __ srl(Rdividend, 31, Rscratch); 524 } else { 525 __ sra(Rdividend, 31, Rscratch); 526 __ and3(Rscratch, divisor - 1, Rscratch); 527 } 528 __ add(Rdividend, Rscratch, Rscratch); 529 __ sra(Rscratch, log2_intptr(divisor), Rresult); 530 return; 531 } else { 532 if (divisor == 2) { 533 __ srl(Rdividend, 31, Rscratch); 534 } else { 535 __ sra(Rdividend, 31, Rscratch); 536 __ and3(Rscratch, divisor - 1,Rscratch); 537 } 538 __ add(Rdividend, Rscratch, Rscratch); 539 __ andn(Rscratch, divisor - 1,Rscratch); 540 __ sub(Rdividend, Rscratch, Rresult); 541 return; 542 } 543 } 544 545 __ sra(Rdividend, 31, Rscratch); 546 __ wry(Rscratch); 547 if (!VM_Version::v9_instructions_work()) { 548 // v9 doesn't require these nops 549 __ nop(); 550 __ nop(); 551 __ nop(); 552 __ nop(); 553 } 554 555 add_debug_info_for_div0_here(op->info()); 556 557 if (Rdivisor != noreg) { 558 __ sdivcc(Rdividend, Rdivisor, (op->code() == lir_idiv ? Rresult : Rscratch)); 559 } else { 560 assert(Assembler::is_simm13(divisor), "can only handle simm13"); 561 __ sdivcc(Rdividend, divisor, (op->code() == lir_idiv ? Rresult : Rscratch)); 562 } 563 564 Label skip; 565 __ br(Assembler::overflowSet, true, Assembler::pn, skip); 566 __ delayed()->Assembler::sethi(0x80000000, (op->code() == lir_idiv ? Rresult : Rscratch)); 567 __ bind(skip); 568 569 if (op->code() == lir_irem) { 570 if (Rdivisor != noreg) { 571 __ smul(Rscratch, Rdivisor, Rscratch); 572 } else { 573 __ smul(Rscratch, divisor, Rscratch); 574 } 575 __ sub(Rdividend, Rscratch, Rresult); 576 } 577 } 578 579 580 void LIR_Assembler::emit_opBranch(LIR_OpBranch* op) { 581 #ifdef ASSERT 582 assert(op->block() == NULL || op->block()->label() == op->label(), "wrong label"); 583 if (op->block() != NULL) _branch_target_blocks.append(op->block()); 584 if (op->ublock() != NULL) _branch_target_blocks.append(op->ublock()); 585 #endif 586 assert(op->info() == NULL, "shouldn't have CodeEmitInfo"); 587 588 if (op->cond() == lir_cond_always) { 589 __ br(Assembler::always, false, Assembler::pt, *(op->label())); 590 } else if (op->code() == lir_cond_float_branch) { 591 assert(op->ublock() != NULL, "must have unordered successor"); 592 bool is_unordered = (op->ublock() == op->block()); 593 Assembler::Condition acond; 594 switch (op->cond()) { 595 case lir_cond_equal: acond = Assembler::f_equal; break; 596 case lir_cond_notEqual: acond = Assembler::f_notEqual; break; 597 case lir_cond_less: acond = (is_unordered ? Assembler::f_unorderedOrLess : Assembler::f_less); break; 598 case lir_cond_greater: acond = (is_unordered ? Assembler::f_unorderedOrGreater : Assembler::f_greater); break; 599 case lir_cond_lessEqual: acond = (is_unordered ? Assembler::f_unorderedOrLessOrEqual : Assembler::f_lessOrEqual); break; 600 case lir_cond_greaterEqual: acond = (is_unordered ? Assembler::f_unorderedOrGreaterOrEqual: Assembler::f_greaterOrEqual); break; 601 default : ShouldNotReachHere(); 602 }; 603 604 if (!VM_Version::v9_instructions_work()) { 605 __ nop(); 606 } 607 __ fb( acond, false, Assembler::pn, *(op->label())); 608 } else { 609 assert (op->code() == lir_branch, "just checking"); 610 611 Assembler::Condition acond; 612 switch (op->cond()) { 613 case lir_cond_equal: acond = Assembler::equal; break; 614 case lir_cond_notEqual: acond = Assembler::notEqual; break; 615 case lir_cond_less: acond = Assembler::less; break; 616 case lir_cond_lessEqual: acond = Assembler::lessEqual; break; 617 case lir_cond_greaterEqual: acond = Assembler::greaterEqual; break; 618 case lir_cond_greater: acond = Assembler::greater; break; 619 case lir_cond_aboveEqual: acond = Assembler::greaterEqualUnsigned; break; 620 case lir_cond_belowEqual: acond = Assembler::lessEqualUnsigned; break; 621 default: ShouldNotReachHere(); 622 }; 623 624 // sparc has different condition codes for testing 32-bit 625 // vs. 64-bit values. We could always test xcc is we could 626 // guarantee that 32-bit loads always sign extended but that isn't 627 // true and since sign extension isn't free, it would impose a 628 // slight cost. 629 #ifdef _LP64 630 if (op->type() == T_INT) { 631 __ br(acond, false, Assembler::pn, *(op->label())); 632 } else 633 #endif 634 __ brx(acond, false, Assembler::pn, *(op->label())); 635 } 636 // The peephole pass fills the delay slot 637 } 638 639 640 void LIR_Assembler::emit_opConvert(LIR_OpConvert* op) { 641 Bytecodes::Code code = op->bytecode(); 642 LIR_Opr dst = op->result_opr(); 643 644 switch(code) { 645 case Bytecodes::_i2l: { 646 Register rlo = dst->as_register_lo(); 647 Register rhi = dst->as_register_hi(); 648 Register rval = op->in_opr()->as_register(); 649 #ifdef _LP64 650 __ sra(rval, 0, rlo); 651 #else 652 __ mov(rval, rlo); 653 __ sra(rval, BitsPerInt-1, rhi); 654 #endif 655 break; 656 } 657 case Bytecodes::_i2d: 658 case Bytecodes::_i2f: { 659 bool is_double = (code == Bytecodes::_i2d); 660 FloatRegister rdst = is_double ? dst->as_double_reg() : dst->as_float_reg(); 661 FloatRegisterImpl::Width w = is_double ? FloatRegisterImpl::D : FloatRegisterImpl::S; 662 FloatRegister rsrc = op->in_opr()->as_float_reg(); 663 if (rsrc != rdst) { 664 __ fmov(FloatRegisterImpl::S, rsrc, rdst); 665 } 666 __ fitof(w, rdst, rdst); 667 break; 668 } 669 case Bytecodes::_f2i:{ 670 FloatRegister rsrc = op->in_opr()->as_float_reg(); 671 Address addr = frame_map()->address_for_slot(dst->single_stack_ix()); 672 Label L; 673 // result must be 0 if value is NaN; test by comparing value to itself 674 __ fcmp(FloatRegisterImpl::S, Assembler::fcc0, rsrc, rsrc); 675 if (!VM_Version::v9_instructions_work()) { 676 __ nop(); 677 } 678 __ fb(Assembler::f_unordered, true, Assembler::pn, L); 679 __ delayed()->st(G0, addr); // annuled if contents of rsrc is not NaN 680 __ ftoi(FloatRegisterImpl::S, rsrc, rsrc); 681 // move integer result from float register to int register 682 __ stf(FloatRegisterImpl::S, rsrc, addr.base(), addr.disp()); 683 __ bind (L); 684 break; 685 } 686 case Bytecodes::_l2i: { 687 Register rlo = op->in_opr()->as_register_lo(); 688 Register rhi = op->in_opr()->as_register_hi(); 689 Register rdst = dst->as_register(); 690 #ifdef _LP64 691 __ sra(rlo, 0, rdst); 692 #else 693 __ mov(rlo, rdst); 694 #endif 695 break; 696 } 697 case Bytecodes::_d2f: 698 case Bytecodes::_f2d: { 699 bool is_double = (code == Bytecodes::_f2d); 700 assert((!is_double && dst->is_single_fpu()) || (is_double && dst->is_double_fpu()), "check"); 701 LIR_Opr val = op->in_opr(); 702 FloatRegister rval = (code == Bytecodes::_d2f) ? val->as_double_reg() : val->as_float_reg(); 703 FloatRegister rdst = is_double ? dst->as_double_reg() : dst->as_float_reg(); 704 FloatRegisterImpl::Width vw = is_double ? FloatRegisterImpl::S : FloatRegisterImpl::D; 705 FloatRegisterImpl::Width dw = is_double ? FloatRegisterImpl::D : FloatRegisterImpl::S; 706 __ ftof(vw, dw, rval, rdst); 707 break; 708 } 709 case Bytecodes::_i2s: 710 case Bytecodes::_i2b: { 711 Register rval = op->in_opr()->as_register(); 712 Register rdst = dst->as_register(); 713 int shift = (code == Bytecodes::_i2b) ? (BitsPerInt - T_BYTE_aelem_bytes * BitsPerByte) : (BitsPerInt - BitsPerShort); 714 __ sll (rval, shift, rdst); 715 __ sra (rdst, shift, rdst); 716 break; 717 } 718 case Bytecodes::_i2c: { 719 Register rval = op->in_opr()->as_register(); 720 Register rdst = dst->as_register(); 721 int shift = BitsPerInt - T_CHAR_aelem_bytes * BitsPerByte; 722 __ sll (rval, shift, rdst); 723 __ srl (rdst, shift, rdst); 724 break; 725 } 726 727 default: ShouldNotReachHere(); 728 } 729 } 730 731 732 void LIR_Assembler::align_call(LIR_Code) { 733 // do nothing since all instructions are word aligned on sparc 734 } 735 736 737 void LIR_Assembler::call(LIR_OpJavaCall* op, relocInfo::relocType rtype) { 738 __ call(op->addr(), rtype); 739 // The peephole pass fills the delay slot, add_call_info is done in 740 // LIR_Assembler::emit_delay. 741 } 742 743 744 void LIR_Assembler::ic_call(LIR_OpJavaCall* op) { 745 RelocationHolder rspec = virtual_call_Relocation::spec(pc()); 746 __ set_oop((jobject)Universe::non_oop_word(), G5_inline_cache_reg); 747 __ relocate(rspec); 748 __ call(op->addr(), relocInfo::none); 749 // The peephole pass fills the delay slot, add_call_info is done in 750 // LIR_Assembler::emit_delay. 751 } 752 753 754 void LIR_Assembler::vtable_call(LIR_OpJavaCall* op) { 755 add_debug_info_for_null_check_here(op->info()); 756 __ ld_ptr(O0, oopDesc::klass_offset_in_bytes(), G3_scratch); 757 if (__ is_simm13(op->vtable_offset())) { 758 __ ld_ptr(G3_scratch, op->vtable_offset(), G5_method); 759 } else { 760 // This will generate 2 instructions 761 __ set(op->vtable_offset(), G5_method); 762 // ld_ptr, set_hi, set 763 __ ld_ptr(G3_scratch, G5_method, G5_method); 764 } 765 __ ld_ptr(G5_method, methodOopDesc::from_compiled_offset(), G3_scratch); 766 __ callr(G3_scratch, G0); 767 // the peephole pass fills the delay slot 768 } 769 770 771 // load with 32-bit displacement 772 int LIR_Assembler::load(Register s, int disp, Register d, BasicType ld_type, CodeEmitInfo *info) { 773 int load_offset = code_offset(); 774 if (Assembler::is_simm13(disp)) { 775 if (info != NULL) add_debug_info_for_null_check_here(info); 776 switch(ld_type) { 777 case T_BOOLEAN: // fall through 778 case T_BYTE : __ ldsb(s, disp, d); break; 779 case T_CHAR : __ lduh(s, disp, d); break; 780 case T_SHORT : __ ldsh(s, disp, d); break; 781 case T_INT : __ ld(s, disp, d); break; 782 case T_ADDRESS:// fall through 783 case T_ARRAY : // fall through 784 case T_OBJECT: __ ld_ptr(s, disp, d); break; 785 default : ShouldNotReachHere(); 786 } 787 } else { 788 __ set(disp, O7); 789 if (info != NULL) add_debug_info_for_null_check_here(info); 790 load_offset = code_offset(); 791 switch(ld_type) { 792 case T_BOOLEAN: // fall through 793 case T_BYTE : __ ldsb(s, O7, d); break; 794 case T_CHAR : __ lduh(s, O7, d); break; 795 case T_SHORT : __ ldsh(s, O7, d); break; 796 case T_INT : __ ld(s, O7, d); break; 797 case T_ADDRESS:// fall through 798 case T_ARRAY : // fall through 799 case T_OBJECT: __ ld_ptr(s, O7, d); break; 800 default : ShouldNotReachHere(); 801 } 802 } 803 if (ld_type == T_ARRAY || ld_type == T_OBJECT) __ verify_oop(d); 804 return load_offset; 805 } 806 807 808 // store with 32-bit displacement 809 void LIR_Assembler::store(Register value, Register base, int offset, BasicType type, CodeEmitInfo *info) { 810 if (Assembler::is_simm13(offset)) { 811 if (info != NULL) add_debug_info_for_null_check_here(info); 812 switch (type) { 813 case T_BOOLEAN: // fall through 814 case T_BYTE : __ stb(value, base, offset); break; 815 case T_CHAR : __ sth(value, base, offset); break; 816 case T_SHORT : __ sth(value, base, offset); break; 817 case T_INT : __ stw(value, base, offset); break; 818 case T_ADDRESS:// fall through 819 case T_ARRAY : // fall through 820 case T_OBJECT: __ st_ptr(value, base, offset); break; 821 default : ShouldNotReachHere(); 822 } 823 } else { 824 __ set(offset, O7); 825 if (info != NULL) add_debug_info_for_null_check_here(info); 826 switch (type) { 827 case T_BOOLEAN: // fall through 828 case T_BYTE : __ stb(value, base, O7); break; 829 case T_CHAR : __ sth(value, base, O7); break; 830 case T_SHORT : __ sth(value, base, O7); break; 831 case T_INT : __ stw(value, base, O7); break; 832 case T_ADDRESS:// fall through 833 case T_ARRAY : //fall through 834 case T_OBJECT: __ st_ptr(value, base, O7); break; 835 default : ShouldNotReachHere(); 836 } 837 } 838 // Note: Do the store before verification as the code might be patched! 839 if (type == T_ARRAY || type == T_OBJECT) __ verify_oop(value); 840 } 841 842 843 // load float with 32-bit displacement 844 void LIR_Assembler::load(Register s, int disp, FloatRegister d, BasicType ld_type, CodeEmitInfo *info) { 845 FloatRegisterImpl::Width w; 846 switch(ld_type) { 847 case T_FLOAT : w = FloatRegisterImpl::S; break; 848 case T_DOUBLE: w = FloatRegisterImpl::D; break; 849 default : ShouldNotReachHere(); 850 } 851 852 if (Assembler::is_simm13(disp)) { 853 if (info != NULL) add_debug_info_for_null_check_here(info); 854 if (disp % BytesPerLong != 0 && w == FloatRegisterImpl::D) { 855 __ ldf(FloatRegisterImpl::S, s, disp + BytesPerWord, d->successor()); 856 __ ldf(FloatRegisterImpl::S, s, disp , d); 857 } else { 858 __ ldf(w, s, disp, d); 859 } 860 } else { 861 __ set(disp, O7); 862 if (info != NULL) add_debug_info_for_null_check_here(info); 863 __ ldf(w, s, O7, d); 864 } 865 } 866 867 868 // store float with 32-bit displacement 869 void LIR_Assembler::store(FloatRegister value, Register base, int offset, BasicType type, CodeEmitInfo *info) { 870 FloatRegisterImpl::Width w; 871 switch(type) { 872 case T_FLOAT : w = FloatRegisterImpl::S; break; 873 case T_DOUBLE: w = FloatRegisterImpl::D; break; 874 default : ShouldNotReachHere(); 875 } 876 877 if (Assembler::is_simm13(offset)) { 878 if (info != NULL) add_debug_info_for_null_check_here(info); 879 if (w == FloatRegisterImpl::D && offset % BytesPerLong != 0) { 880 __ stf(FloatRegisterImpl::S, value->successor(), base, offset + BytesPerWord); 881 __ stf(FloatRegisterImpl::S, value , base, offset); 882 } else { 883 __ stf(w, value, base, offset); 884 } 885 } else { 886 __ set(offset, O7); 887 if (info != NULL) add_debug_info_for_null_check_here(info); 888 __ stf(w, value, O7, base); 889 } 890 } 891 892 893 int LIR_Assembler::store(LIR_Opr from_reg, Register base, int offset, BasicType type, bool unaligned) { 894 int store_offset; 895 if (!Assembler::is_simm13(offset + (type == T_LONG) ? wordSize : 0)) { 896 assert(!unaligned, "can't handle this"); 897 // for offsets larger than a simm13 we setup the offset in O7 898 __ set(offset, O7); 899 store_offset = store(from_reg, base, O7, type); 900 } else { 901 if (type == T_ARRAY || type == T_OBJECT) __ verify_oop(from_reg->as_register()); 902 store_offset = code_offset(); 903 switch (type) { 904 case T_BOOLEAN: // fall through 905 case T_BYTE : __ stb(from_reg->as_register(), base, offset); break; 906 case T_CHAR : __ sth(from_reg->as_register(), base, offset); break; 907 case T_SHORT : __ sth(from_reg->as_register(), base, offset); break; 908 case T_INT : __ stw(from_reg->as_register(), base, offset); break; 909 case T_LONG : 910 #ifdef _LP64 911 if (unaligned || PatchALot) { 912 __ srax(from_reg->as_register_lo(), 32, O7); 913 __ stw(from_reg->as_register_lo(), base, offset + lo_word_offset_in_bytes); 914 __ stw(O7, base, offset + hi_word_offset_in_bytes); 915 } else { 916 __ stx(from_reg->as_register_lo(), base, offset); 917 } 918 #else 919 assert(Assembler::is_simm13(offset + 4), "must be"); 920 __ stw(from_reg->as_register_lo(), base, offset + lo_word_offset_in_bytes); 921 __ stw(from_reg->as_register_hi(), base, offset + hi_word_offset_in_bytes); 922 #endif 923 break; 924 case T_ADDRESS:// fall through 925 case T_ARRAY : // fall through 926 case T_OBJECT: __ st_ptr(from_reg->as_register(), base, offset); break; 927 case T_FLOAT : __ stf(FloatRegisterImpl::S, from_reg->as_float_reg(), base, offset); break; 928 case T_DOUBLE: 929 { 930 FloatRegister reg = from_reg->as_double_reg(); 931 // split unaligned stores 932 if (unaligned || PatchALot) { 933 assert(Assembler::is_simm13(offset + 4), "must be"); 934 __ stf(FloatRegisterImpl::S, reg->successor(), base, offset + 4); 935 __ stf(FloatRegisterImpl::S, reg, base, offset); 936 } else { 937 __ stf(FloatRegisterImpl::D, reg, base, offset); 938 } 939 break; 940 } 941 default : ShouldNotReachHere(); 942 } 943 } 944 return store_offset; 945 } 946 947 948 int LIR_Assembler::store(LIR_Opr from_reg, Register base, Register disp, BasicType type) { 949 if (type == T_ARRAY || type == T_OBJECT) __ verify_oop(from_reg->as_register()); 950 int store_offset = code_offset(); 951 switch (type) { 952 case T_BOOLEAN: // fall through 953 case T_BYTE : __ stb(from_reg->as_register(), base, disp); break; 954 case T_CHAR : __ sth(from_reg->as_register(), base, disp); break; 955 case T_SHORT : __ sth(from_reg->as_register(), base, disp); break; 956 case T_INT : __ stw(from_reg->as_register(), base, disp); break; 957 case T_LONG : 958 #ifdef _LP64 959 __ stx(from_reg->as_register_lo(), base, disp); 960 #else 961 assert(from_reg->as_register_hi()->successor() == from_reg->as_register_lo(), "must match"); 962 __ std(from_reg->as_register_hi(), base, disp); 963 #endif 964 break; 965 case T_ADDRESS:// fall through 966 case T_ARRAY : // fall through 967 case T_OBJECT: __ st_ptr(from_reg->as_register(), base, disp); break; 968 case T_FLOAT : __ stf(FloatRegisterImpl::S, from_reg->as_float_reg(), base, disp); break; 969 case T_DOUBLE: __ stf(FloatRegisterImpl::D, from_reg->as_double_reg(), base, disp); break; 970 default : ShouldNotReachHere(); 971 } 972 return store_offset; 973 } 974 975 976 int LIR_Assembler::load(Register base, int offset, LIR_Opr to_reg, BasicType type, bool unaligned) { 977 int load_offset; 978 if (!Assembler::is_simm13(offset + (type == T_LONG) ? wordSize : 0)) { 979 assert(base != O7, "destroying register"); 980 assert(!unaligned, "can't handle this"); 981 // for offsets larger than a simm13 we setup the offset in O7 982 __ set(offset, O7); 983 load_offset = load(base, O7, to_reg, type); 984 } else { 985 load_offset = code_offset(); 986 switch(type) { 987 case T_BOOLEAN: // fall through 988 case T_BYTE : __ ldsb(base, offset, to_reg->as_register()); break; 989 case T_CHAR : __ lduh(base, offset, to_reg->as_register()); break; 990 case T_SHORT : __ ldsh(base, offset, to_reg->as_register()); break; 991 case T_INT : __ ld(base, offset, to_reg->as_register()); break; 992 case T_LONG : 993 if (!unaligned) { 994 #ifdef _LP64 995 __ ldx(base, offset, to_reg->as_register_lo()); 996 #else 997 assert(to_reg->as_register_hi()->successor() == to_reg->as_register_lo(), 998 "must be sequential"); 999 __ ldd(base, offset, to_reg->as_register_hi()); 1000 #endif 1001 } else { 1002 #ifdef _LP64 1003 assert(base != to_reg->as_register_lo(), "can't handle this"); 1004 assert(O7 != to_reg->as_register_lo(), "can't handle this"); 1005 __ ld(base, offset + hi_word_offset_in_bytes, to_reg->as_register_lo()); 1006 __ lduw(base, offset + lo_word_offset_in_bytes, O7); // in case O7 is base or offset, use it last 1007 __ sllx(to_reg->as_register_lo(), 32, to_reg->as_register_lo()); 1008 __ or3(to_reg->as_register_lo(), O7, to_reg->as_register_lo()); 1009 #else 1010 if (base == to_reg->as_register_lo()) { 1011 __ ld(base, offset + hi_word_offset_in_bytes, to_reg->as_register_hi()); 1012 __ ld(base, offset + lo_word_offset_in_bytes, to_reg->as_register_lo()); 1013 } else { 1014 __ ld(base, offset + lo_word_offset_in_bytes, to_reg->as_register_lo()); 1015 __ ld(base, offset + hi_word_offset_in_bytes, to_reg->as_register_hi()); 1016 } 1017 #endif 1018 } 1019 break; 1020 case T_ADDRESS:// fall through 1021 case T_ARRAY : // fall through 1022 case T_OBJECT: __ ld_ptr(base, offset, to_reg->as_register()); break; 1023 case T_FLOAT: __ ldf(FloatRegisterImpl::S, base, offset, to_reg->as_float_reg()); break; 1024 case T_DOUBLE: 1025 { 1026 FloatRegister reg = to_reg->as_double_reg(); 1027 // split unaligned loads 1028 if (unaligned || PatchALot) { 1029 __ ldf(FloatRegisterImpl::S, base, offset + 4, reg->successor()); 1030 __ ldf(FloatRegisterImpl::S, base, offset, reg); 1031 } else { 1032 __ ldf(FloatRegisterImpl::D, base, offset, to_reg->as_double_reg()); 1033 } 1034 break; 1035 } 1036 default : ShouldNotReachHere(); 1037 } 1038 if (type == T_ARRAY || type == T_OBJECT) __ verify_oop(to_reg->as_register()); 1039 } 1040 return load_offset; 1041 } 1042 1043 1044 int LIR_Assembler::load(Register base, Register disp, LIR_Opr to_reg, BasicType type) { 1045 int load_offset = code_offset(); 1046 switch(type) { 1047 case T_BOOLEAN: // fall through 1048 case T_BYTE : __ ldsb(base, disp, to_reg->as_register()); break; 1049 case T_CHAR : __ lduh(base, disp, to_reg->as_register()); break; 1050 case T_SHORT : __ ldsh(base, disp, to_reg->as_register()); break; 1051 case T_INT : __ ld(base, disp, to_reg->as_register()); break; 1052 case T_ADDRESS:// fall through 1053 case T_ARRAY : // fall through 1054 case T_OBJECT: __ ld_ptr(base, disp, to_reg->as_register()); break; 1055 case T_FLOAT: __ ldf(FloatRegisterImpl::S, base, disp, to_reg->as_float_reg()); break; 1056 case T_DOUBLE: __ ldf(FloatRegisterImpl::D, base, disp, to_reg->as_double_reg()); break; 1057 case T_LONG : 1058 #ifdef _LP64 1059 __ ldx(base, disp, to_reg->as_register_lo()); 1060 #else 1061 assert(to_reg->as_register_hi()->successor() == to_reg->as_register_lo(), 1062 "must be sequential"); 1063 __ ldd(base, disp, to_reg->as_register_hi()); 1064 #endif 1065 break; 1066 default : ShouldNotReachHere(); 1067 } 1068 if (type == T_ARRAY || type == T_OBJECT) __ verify_oop(to_reg->as_register()); 1069 return load_offset; 1070 } 1071 1072 1073 // load/store with an Address 1074 void LIR_Assembler::load(const Address& a, Register d, BasicType ld_type, CodeEmitInfo *info, int offset) { 1075 load(a.base(), a.disp() + offset, d, ld_type, info); 1076 } 1077 1078 1079 void LIR_Assembler::store(Register value, const Address& dest, BasicType type, CodeEmitInfo *info, int offset) { 1080 store(value, dest.base(), dest.disp() + offset, type, info); 1081 } 1082 1083 1084 // loadf/storef with an Address 1085 void LIR_Assembler::load(const Address& a, FloatRegister d, BasicType ld_type, CodeEmitInfo *info, int offset) { 1086 load(a.base(), a.disp() + offset, d, ld_type, info); 1087 } 1088 1089 1090 void LIR_Assembler::store(FloatRegister value, const Address& dest, BasicType type, CodeEmitInfo *info, int offset) { 1091 store(value, dest.base(), dest.disp() + offset, type, info); 1092 } 1093 1094 1095 // load/store with an Address 1096 void LIR_Assembler::load(LIR_Address* a, Register d, BasicType ld_type, CodeEmitInfo *info) { 1097 load(as_Address(a), d, ld_type, info); 1098 } 1099 1100 1101 void LIR_Assembler::store(Register value, LIR_Address* dest, BasicType type, CodeEmitInfo *info) { 1102 store(value, as_Address(dest), type, info); 1103 } 1104 1105 1106 // loadf/storef with an Address 1107 void LIR_Assembler::load(LIR_Address* a, FloatRegister d, BasicType ld_type, CodeEmitInfo *info) { 1108 load(as_Address(a), d, ld_type, info); 1109 } 1110 1111 1112 void LIR_Assembler::store(FloatRegister value, LIR_Address* dest, BasicType type, CodeEmitInfo *info) { 1113 store(value, as_Address(dest), type, info); 1114 } 1115 1116 1117 void LIR_Assembler::const2stack(LIR_Opr src, LIR_Opr dest) { 1118 LIR_Const* c = src->as_constant_ptr(); 1119 switch (c->type()) { 1120 case T_INT: 1121 case T_FLOAT: 1122 case T_ADDRESS: { 1123 Register src_reg = O7; 1124 int value = c->as_jint_bits(); 1125 if (value == 0) { 1126 src_reg = G0; 1127 } else { 1128 __ set(value, O7); 1129 } 1130 Address addr = frame_map()->address_for_slot(dest->single_stack_ix()); 1131 __ stw(src_reg, addr.base(), addr.disp()); 1132 break; 1133 } 1134 case T_OBJECT: { 1135 Register src_reg = O7; 1136 jobject2reg(c->as_jobject(), src_reg); 1137 Address addr = frame_map()->address_for_slot(dest->single_stack_ix()); 1138 __ st_ptr(src_reg, addr.base(), addr.disp()); 1139 break; 1140 } 1141 case T_LONG: 1142 case T_DOUBLE: { 1143 Address addr = frame_map()->address_for_double_slot(dest->double_stack_ix()); 1144 1145 Register tmp = O7; 1146 int value_lo = c->as_jint_lo_bits(); 1147 if (value_lo == 0) { 1148 tmp = G0; 1149 } else { 1150 __ set(value_lo, O7); 1151 } 1152 __ stw(tmp, addr.base(), addr.disp() + lo_word_offset_in_bytes); 1153 int value_hi = c->as_jint_hi_bits(); 1154 if (value_hi == 0) { 1155 tmp = G0; 1156 } else { 1157 __ set(value_hi, O7); 1158 } 1159 __ stw(tmp, addr.base(), addr.disp() + hi_word_offset_in_bytes); 1160 break; 1161 } 1162 default: 1163 Unimplemented(); 1164 } 1165 } 1166 1167 1168 void LIR_Assembler::const2mem(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info ) { 1169 LIR_Const* c = src->as_constant_ptr(); 1170 LIR_Address* addr = dest->as_address_ptr(); 1171 Register base = addr->base()->as_pointer_register(); 1172 1173 if (info != NULL) { 1174 add_debug_info_for_null_check_here(info); 1175 } 1176 switch (c->type()) { 1177 case T_INT: 1178 case T_FLOAT: 1179 case T_ADDRESS: { 1180 LIR_Opr tmp = FrameMap::O7_opr; 1181 int value = c->as_jint_bits(); 1182 if (value == 0) { 1183 tmp = FrameMap::G0_opr; 1184 } else if (Assembler::is_simm13(value)) { 1185 __ set(value, O7); 1186 } 1187 if (addr->index()->is_valid()) { 1188 assert(addr->disp() == 0, "must be zero"); 1189 store(tmp, base, addr->index()->as_pointer_register(), type); 1190 } else { 1191 assert(Assembler::is_simm13(addr->disp()), "can't handle larger addresses"); 1192 store(tmp, base, addr->disp(), type); 1193 } 1194 break; 1195 } 1196 case T_LONG: 1197 case T_DOUBLE: { 1198 assert(!addr->index()->is_valid(), "can't handle reg reg address here"); 1199 assert(Assembler::is_simm13(addr->disp()) && 1200 Assembler::is_simm13(addr->disp() + 4), "can't handle larger addresses"); 1201 1202 Register tmp = O7; 1203 int value_lo = c->as_jint_lo_bits(); 1204 if (value_lo == 0) { 1205 tmp = G0; 1206 } else { 1207 __ set(value_lo, O7); 1208 } 1209 store(tmp, base, addr->disp() + lo_word_offset_in_bytes, T_INT); 1210 int value_hi = c->as_jint_hi_bits(); 1211 if (value_hi == 0) { 1212 tmp = G0; 1213 } else { 1214 __ set(value_hi, O7); 1215 } 1216 store(tmp, base, addr->disp() + hi_word_offset_in_bytes, T_INT); 1217 break; 1218 } 1219 case T_OBJECT: { 1220 jobject obj = c->as_jobject(); 1221 LIR_Opr tmp; 1222 if (obj == NULL) { 1223 tmp = FrameMap::G0_opr; 1224 } else { 1225 tmp = FrameMap::O7_opr; 1226 jobject2reg(c->as_jobject(), O7); 1227 } 1228 // handle either reg+reg or reg+disp address 1229 if (addr->index()->is_valid()) { 1230 assert(addr->disp() == 0, "must be zero"); 1231 store(tmp, base, addr->index()->as_pointer_register(), type); 1232 } else { 1233 assert(Assembler::is_simm13(addr->disp()), "can't handle larger addresses"); 1234 store(tmp, base, addr->disp(), type); 1235 } 1236 1237 break; 1238 } 1239 default: 1240 Unimplemented(); 1241 } 1242 } 1243 1244 1245 void LIR_Assembler::const2reg(LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_code, CodeEmitInfo* info) { 1246 LIR_Const* c = src->as_constant_ptr(); 1247 LIR_Opr to_reg = dest; 1248 1249 switch (c->type()) { 1250 case T_INT: 1251 case T_ADDRESS: 1252 { 1253 jint con = c->as_jint(); 1254 if (to_reg->is_single_cpu()) { 1255 assert(patch_code == lir_patch_none, "no patching handled here"); 1256 __ set(con, to_reg->as_register()); 1257 } else { 1258 ShouldNotReachHere(); 1259 assert(to_reg->is_single_fpu(), "wrong register kind"); 1260 1261 __ set(con, O7); 1262 Address temp_slot(SP, (frame::register_save_words * wordSize) + STACK_BIAS); 1263 __ st(O7, temp_slot); 1264 __ ldf(FloatRegisterImpl::S, temp_slot, to_reg->as_float_reg()); 1265 } 1266 } 1267 break; 1268 1269 case T_LONG: 1270 { 1271 jlong con = c->as_jlong(); 1272 1273 if (to_reg->is_double_cpu()) { 1274 #ifdef _LP64 1275 __ set(con, to_reg->as_register_lo()); 1276 #else 1277 __ set(low(con), to_reg->as_register_lo()); 1278 __ set(high(con), to_reg->as_register_hi()); 1279 #endif 1280 #ifdef _LP64 1281 } else if (to_reg->is_single_cpu()) { 1282 __ set(con, to_reg->as_register()); 1283 #endif 1284 } else { 1285 ShouldNotReachHere(); 1286 assert(to_reg->is_double_fpu(), "wrong register kind"); 1287 Address temp_slot_lo(SP, ((frame::register_save_words ) * wordSize) + STACK_BIAS); 1288 Address temp_slot_hi(SP, ((frame::register_save_words) * wordSize) + (longSize/2) + STACK_BIAS); 1289 __ set(low(con), O7); 1290 __ st(O7, temp_slot_lo); 1291 __ set(high(con), O7); 1292 __ st(O7, temp_slot_hi); 1293 __ ldf(FloatRegisterImpl::D, temp_slot_lo, to_reg->as_double_reg()); 1294 } 1295 } 1296 break; 1297 1298 case T_OBJECT: 1299 { 1300 if (patch_code == lir_patch_none) { 1301 jobject2reg(c->as_jobject(), to_reg->as_register()); 1302 } else { 1303 jobject2reg_with_patching(to_reg->as_register(), info); 1304 } 1305 } 1306 break; 1307 1308 case T_FLOAT: 1309 { 1310 address const_addr = __ float_constant(c->as_jfloat()); 1311 if (const_addr == NULL) { 1312 bailout("const section overflow"); 1313 break; 1314 } 1315 RelocationHolder rspec = internal_word_Relocation::spec(const_addr); 1316 AddressLiteral const_addrlit(const_addr, rspec); 1317 if (to_reg->is_single_fpu()) { 1318 __ patchable_sethi(const_addrlit, O7); 1319 __ relocate(rspec); 1320 __ ldf(FloatRegisterImpl::S, O7, const_addrlit.low10(), to_reg->as_float_reg()); 1321 1322 } else { 1323 assert(to_reg->is_single_cpu(), "Must be a cpu register."); 1324 1325 __ set(const_addrlit, O7); 1326 load(O7, 0, to_reg->as_register(), T_INT); 1327 } 1328 } 1329 break; 1330 1331 case T_DOUBLE: 1332 { 1333 address const_addr = __ double_constant(c->as_jdouble()); 1334 if (const_addr == NULL) { 1335 bailout("const section overflow"); 1336 break; 1337 } 1338 RelocationHolder rspec = internal_word_Relocation::spec(const_addr); 1339 1340 if (to_reg->is_double_fpu()) { 1341 AddressLiteral const_addrlit(const_addr, rspec); 1342 __ patchable_sethi(const_addrlit, O7); 1343 __ relocate(rspec); 1344 __ ldf (FloatRegisterImpl::D, O7, const_addrlit.low10(), to_reg->as_double_reg()); 1345 } else { 1346 assert(to_reg->is_double_cpu(), "Must be a long register."); 1347 #ifdef _LP64 1348 __ set(jlong_cast(c->as_jdouble()), to_reg->as_register_lo()); 1349 #else 1350 __ set(low(jlong_cast(c->as_jdouble())), to_reg->as_register_lo()); 1351 __ set(high(jlong_cast(c->as_jdouble())), to_reg->as_register_hi()); 1352 #endif 1353 } 1354 1355 } 1356 break; 1357 1358 default: 1359 ShouldNotReachHere(); 1360 } 1361 } 1362 1363 Address LIR_Assembler::as_Address(LIR_Address* addr) { 1364 Register reg = addr->base()->as_register(); 1365 return Address(reg, addr->disp()); 1366 } 1367 1368 1369 void LIR_Assembler::stack2stack(LIR_Opr src, LIR_Opr dest, BasicType type) { 1370 switch (type) { 1371 case T_INT: 1372 case T_FLOAT: { 1373 Register tmp = O7; 1374 Address from = frame_map()->address_for_slot(src->single_stack_ix()); 1375 Address to = frame_map()->address_for_slot(dest->single_stack_ix()); 1376 __ lduw(from.base(), from.disp(), tmp); 1377 __ stw(tmp, to.base(), to.disp()); 1378 break; 1379 } 1380 case T_OBJECT: { 1381 Register tmp = O7; 1382 Address from = frame_map()->address_for_slot(src->single_stack_ix()); 1383 Address to = frame_map()->address_for_slot(dest->single_stack_ix()); 1384 __ ld_ptr(from.base(), from.disp(), tmp); 1385 __ st_ptr(tmp, to.base(), to.disp()); 1386 break; 1387 } 1388 case T_LONG: 1389 case T_DOUBLE: { 1390 Register tmp = O7; 1391 Address from = frame_map()->address_for_double_slot(src->double_stack_ix()); 1392 Address to = frame_map()->address_for_double_slot(dest->double_stack_ix()); 1393 __ lduw(from.base(), from.disp(), tmp); 1394 __ stw(tmp, to.base(), to.disp()); 1395 __ lduw(from.base(), from.disp() + 4, tmp); 1396 __ stw(tmp, to.base(), to.disp() + 4); 1397 break; 1398 } 1399 1400 default: 1401 ShouldNotReachHere(); 1402 } 1403 } 1404 1405 1406 Address LIR_Assembler::as_Address_hi(LIR_Address* addr) { 1407 Address base = as_Address(addr); 1408 return Address(base.base(), base.disp() + hi_word_offset_in_bytes); 1409 } 1410 1411 1412 Address LIR_Assembler::as_Address_lo(LIR_Address* addr) { 1413 Address base = as_Address(addr); 1414 return Address(base.base(), base.disp() + lo_word_offset_in_bytes); 1415 } 1416 1417 1418 void LIR_Assembler::mem2reg(LIR_Opr src_opr, LIR_Opr dest, BasicType type, 1419 LIR_PatchCode patch_code, CodeEmitInfo* info, bool unaligned) { 1420 1421 LIR_Address* addr = src_opr->as_address_ptr(); 1422 LIR_Opr to_reg = dest; 1423 1424 Register src = addr->base()->as_pointer_register(); 1425 Register disp_reg = noreg; 1426 int disp_value = addr->disp(); 1427 bool needs_patching = (patch_code != lir_patch_none); 1428 1429 if (addr->base()->type() == T_OBJECT) { 1430 __ verify_oop(src); 1431 } 1432 1433 PatchingStub* patch = NULL; 1434 if (needs_patching) { 1435 patch = new PatchingStub(_masm, PatchingStub::access_field_id); 1436 assert(!to_reg->is_double_cpu() || 1437 patch_code == lir_patch_none || 1438 patch_code == lir_patch_normal, "patching doesn't match register"); 1439 } 1440 1441 if (addr->index()->is_illegal()) { 1442 if (!Assembler::is_simm13(disp_value) && (!unaligned || Assembler::is_simm13(disp_value + 4))) { 1443 if (needs_patching) { 1444 __ patchable_set(0, O7); 1445 } else { 1446 __ set(disp_value, O7); 1447 } 1448 disp_reg = O7; 1449 } 1450 } else if (unaligned || PatchALot) { 1451 __ add(src, addr->index()->as_register(), O7); 1452 src = O7; 1453 } else { 1454 disp_reg = addr->index()->as_pointer_register(); 1455 assert(disp_value == 0, "can't handle 3 operand addresses"); 1456 } 1457 1458 // remember the offset of the load. The patching_epilog must be done 1459 // before the call to add_debug_info, otherwise the PcDescs don't get 1460 // entered in increasing order. 1461 int offset = code_offset(); 1462 1463 assert(disp_reg != noreg || Assembler::is_simm13(disp_value), "should have set this up"); 1464 if (disp_reg == noreg) { 1465 offset = load(src, disp_value, to_reg, type, unaligned); 1466 } else { 1467 assert(!unaligned, "can't handle this"); 1468 offset = load(src, disp_reg, to_reg, type); 1469 } 1470 1471 if (patch != NULL) { 1472 patching_epilog(patch, patch_code, src, info); 1473 } 1474 1475 if (info != NULL) add_debug_info_for_null_check(offset, info); 1476 } 1477 1478 1479 void LIR_Assembler::prefetchr(LIR_Opr src) { 1480 LIR_Address* addr = src->as_address_ptr(); 1481 Address from_addr = as_Address(addr); 1482 1483 if (VM_Version::has_v9()) { 1484 __ prefetch(from_addr, Assembler::severalReads); 1485 } 1486 } 1487 1488 1489 void LIR_Assembler::prefetchw(LIR_Opr src) { 1490 LIR_Address* addr = src->as_address_ptr(); 1491 Address from_addr = as_Address(addr); 1492 1493 if (VM_Version::has_v9()) { 1494 __ prefetch(from_addr, Assembler::severalWritesAndPossiblyReads); 1495 } 1496 } 1497 1498 1499 void LIR_Assembler::stack2reg(LIR_Opr src, LIR_Opr dest, BasicType type) { 1500 Address addr; 1501 if (src->is_single_word()) { 1502 addr = frame_map()->address_for_slot(src->single_stack_ix()); 1503 } else if (src->is_double_word()) { 1504 addr = frame_map()->address_for_double_slot(src->double_stack_ix()); 1505 } 1506 1507 bool unaligned = (addr.disp() - STACK_BIAS) % 8 != 0; 1508 load(addr.base(), addr.disp(), dest, dest->type(), unaligned); 1509 } 1510 1511 1512 void LIR_Assembler::reg2stack(LIR_Opr from_reg, LIR_Opr dest, BasicType type, bool pop_fpu_stack) { 1513 Address addr; 1514 if (dest->is_single_word()) { 1515 addr = frame_map()->address_for_slot(dest->single_stack_ix()); 1516 } else if (dest->is_double_word()) { 1517 addr = frame_map()->address_for_slot(dest->double_stack_ix()); 1518 } 1519 bool unaligned = (addr.disp() - STACK_BIAS) % 8 != 0; 1520 store(from_reg, addr.base(), addr.disp(), from_reg->type(), unaligned); 1521 } 1522 1523 1524 void LIR_Assembler::reg2reg(LIR_Opr from_reg, LIR_Opr to_reg) { 1525 if (from_reg->is_float_kind() && to_reg->is_float_kind()) { 1526 if (from_reg->is_double_fpu()) { 1527 // double to double moves 1528 assert(to_reg->is_double_fpu(), "should match"); 1529 __ fmov(FloatRegisterImpl::D, from_reg->as_double_reg(), to_reg->as_double_reg()); 1530 } else { 1531 // float to float moves 1532 assert(to_reg->is_single_fpu(), "should match"); 1533 __ fmov(FloatRegisterImpl::S, from_reg->as_float_reg(), to_reg->as_float_reg()); 1534 } 1535 } else if (!from_reg->is_float_kind() && !to_reg->is_float_kind()) { 1536 if (from_reg->is_double_cpu()) { 1537 #ifdef _LP64 1538 __ mov(from_reg->as_pointer_register(), to_reg->as_pointer_register()); 1539 #else 1540 assert(to_reg->is_double_cpu() && 1541 from_reg->as_register_hi() != to_reg->as_register_lo() && 1542 from_reg->as_register_lo() != to_reg->as_register_hi(), 1543 "should both be long and not overlap"); 1544 // long to long moves 1545 __ mov(from_reg->as_register_hi(), to_reg->as_register_hi()); 1546 __ mov(from_reg->as_register_lo(), to_reg->as_register_lo()); 1547 #endif 1548 #ifdef _LP64 1549 } else if (to_reg->is_double_cpu()) { 1550 // int to int moves 1551 __ mov(from_reg->as_register(), to_reg->as_register_lo()); 1552 #endif 1553 } else { 1554 // int to int moves 1555 __ mov(from_reg->as_register(), to_reg->as_register()); 1556 } 1557 } else { 1558 ShouldNotReachHere(); 1559 } 1560 if (to_reg->type() == T_OBJECT || to_reg->type() == T_ARRAY) { 1561 __ verify_oop(to_reg->as_register()); 1562 } 1563 } 1564 1565 1566 void LIR_Assembler::reg2mem(LIR_Opr from_reg, LIR_Opr dest, BasicType type, 1567 LIR_PatchCode patch_code, CodeEmitInfo* info, bool pop_fpu_stack, 1568 bool unaligned) { 1569 LIR_Address* addr = dest->as_address_ptr(); 1570 1571 Register src = addr->base()->as_pointer_register(); 1572 Register disp_reg = noreg; 1573 int disp_value = addr->disp(); 1574 bool needs_patching = (patch_code != lir_patch_none); 1575 1576 if (addr->base()->is_oop_register()) { 1577 __ verify_oop(src); 1578 } 1579 1580 PatchingStub* patch = NULL; 1581 if (needs_patching) { 1582 patch = new PatchingStub(_masm, PatchingStub::access_field_id); 1583 assert(!from_reg->is_double_cpu() || 1584 patch_code == lir_patch_none || 1585 patch_code == lir_patch_normal, "patching doesn't match register"); 1586 } 1587 1588 if (addr->index()->is_illegal()) { 1589 if (!Assembler::is_simm13(disp_value) && (!unaligned || Assembler::is_simm13(disp_value + 4))) { 1590 if (needs_patching) { 1591 __ patchable_set(0, O7); 1592 } else { 1593 __ set(disp_value, O7); 1594 } 1595 disp_reg = O7; 1596 } 1597 } else if (unaligned || PatchALot) { 1598 __ add(src, addr->index()->as_register(), O7); 1599 src = O7; 1600 } else { 1601 disp_reg = addr->index()->as_pointer_register(); 1602 assert(disp_value == 0, "can't handle 3 operand addresses"); 1603 } 1604 1605 // remember the offset of the store. The patching_epilog must be done 1606 // before the call to add_debug_info_for_null_check, otherwise the PcDescs don't get 1607 // entered in increasing order. 1608 int offset; 1609 1610 assert(disp_reg != noreg || Assembler::is_simm13(disp_value), "should have set this up"); 1611 if (disp_reg == noreg) { 1612 offset = store(from_reg, src, disp_value, type, unaligned); 1613 } else { 1614 assert(!unaligned, "can't handle this"); 1615 offset = store(from_reg, src, disp_reg, type); 1616 } 1617 1618 if (patch != NULL) { 1619 patching_epilog(patch, patch_code, src, info); 1620 } 1621 1622 if (info != NULL) add_debug_info_for_null_check(offset, info); 1623 } 1624 1625 1626 void LIR_Assembler::return_op(LIR_Opr result) { 1627 // the poll may need a register so just pick one that isn't the return register 1628 #if defined(TIERED) && !defined(_LP64) 1629 if (result->type_field() == LIR_OprDesc::long_type) { 1630 // Must move the result to G1 1631 // Must leave proper result in O0,O1 and G1 (TIERED only) 1632 __ sllx(I0, 32, G1); // Shift bits into high G1 1633 __ srl (I1, 0, I1); // Zero extend O1 (harmless?) 1634 __ or3 (I1, G1, G1); // OR 64 bits into G1 1635 #ifdef ASSERT 1636 // mangle it so any problems will show up 1637 __ set(0xdeadbeef, I0); 1638 __ set(0xdeadbeef, I1); 1639 #endif 1640 } 1641 #endif // TIERED 1642 __ set((intptr_t)os::get_polling_page(), L0); 1643 __ relocate(relocInfo::poll_return_type); 1644 __ ld_ptr(L0, 0, G0); 1645 __ ret(); 1646 __ delayed()->restore(); 1647 } 1648 1649 1650 int LIR_Assembler::safepoint_poll(LIR_Opr tmp, CodeEmitInfo* info) { 1651 __ set((intptr_t)os::get_polling_page(), tmp->as_register()); 1652 if (info != NULL) { 1653 add_debug_info_for_branch(info); 1654 } else { 1655 __ relocate(relocInfo::poll_type); 1656 } 1657 1658 int offset = __ offset(); 1659 __ ld_ptr(tmp->as_register(), 0, G0); 1660 1661 return offset; 1662 } 1663 1664 1665 void LIR_Assembler::emit_static_call_stub() { 1666 address call_pc = __ pc(); 1667 address stub = __ start_a_stub(call_stub_size); 1668 if (stub == NULL) { 1669 bailout("static call stub overflow"); 1670 return; 1671 } 1672 1673 int start = __ offset(); 1674 __ relocate(static_stub_Relocation::spec(call_pc)); 1675 1676 __ set_oop(NULL, G5); 1677 // must be set to -1 at code generation time 1678 AddressLiteral addrlit(-1); 1679 __ jump_to(addrlit, G3); 1680 __ delayed()->nop(); 1681 1682 assert(__ offset() - start <= call_stub_size, "stub too big"); 1683 __ end_a_stub(); 1684 } 1685 1686 1687 void LIR_Assembler::comp_op(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Op2* op) { 1688 if (opr1->is_single_fpu()) { 1689 __ fcmp(FloatRegisterImpl::S, Assembler::fcc0, opr1->as_float_reg(), opr2->as_float_reg()); 1690 } else if (opr1->is_double_fpu()) { 1691 __ fcmp(FloatRegisterImpl::D, Assembler::fcc0, opr1->as_double_reg(), opr2->as_double_reg()); 1692 } else if (opr1->is_single_cpu()) { 1693 if (opr2->is_constant()) { 1694 switch (opr2->as_constant_ptr()->type()) { 1695 case T_INT: 1696 { jint con = opr2->as_constant_ptr()->as_jint(); 1697 if (Assembler::is_simm13(con)) { 1698 __ cmp(opr1->as_register(), con); 1699 } else { 1700 __ set(con, O7); 1701 __ cmp(opr1->as_register(), O7); 1702 } 1703 } 1704 break; 1705 1706 case T_OBJECT: 1707 // there are only equal/notequal comparisions on objects 1708 { jobject con = opr2->as_constant_ptr()->as_jobject(); 1709 if (con == NULL) { 1710 __ cmp(opr1->as_register(), 0); 1711 } else { 1712 jobject2reg(con, O7); 1713 __ cmp(opr1->as_register(), O7); 1714 } 1715 } 1716 break; 1717 1718 default: 1719 ShouldNotReachHere(); 1720 break; 1721 } 1722 } else { 1723 if (opr2->is_address()) { 1724 LIR_Address * addr = opr2->as_address_ptr(); 1725 BasicType type = addr->type(); 1726 if ( type == T_OBJECT ) __ ld_ptr(as_Address(addr), O7); 1727 else __ ld(as_Address(addr), O7); 1728 __ cmp(opr1->as_register(), O7); 1729 } else { 1730 __ cmp(opr1->as_register(), opr2->as_register()); 1731 } 1732 } 1733 } else if (opr1->is_double_cpu()) { 1734 Register xlo = opr1->as_register_lo(); 1735 Register xhi = opr1->as_register_hi(); 1736 if (opr2->is_constant() && opr2->as_jlong() == 0) { 1737 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "only handles these cases"); 1738 #ifdef _LP64 1739 __ orcc(xhi, G0, G0); 1740 #else 1741 __ orcc(xhi, xlo, G0); 1742 #endif 1743 } else if (opr2->is_register()) { 1744 Register ylo = opr2->as_register_lo(); 1745 Register yhi = opr2->as_register_hi(); 1746 #ifdef _LP64 1747 __ cmp(xlo, ylo); 1748 #else 1749 __ subcc(xlo, ylo, xlo); 1750 __ subccc(xhi, yhi, xhi); 1751 if (condition == lir_cond_equal || condition == lir_cond_notEqual) { 1752 __ orcc(xhi, xlo, G0); 1753 } 1754 #endif 1755 } else { 1756 ShouldNotReachHere(); 1757 } 1758 } else if (opr1->is_address()) { 1759 LIR_Address * addr = opr1->as_address_ptr(); 1760 BasicType type = addr->type(); 1761 assert (opr2->is_constant(), "Checking"); 1762 if ( type == T_OBJECT ) __ ld_ptr(as_Address(addr), O7); 1763 else __ ld(as_Address(addr), O7); 1764 __ cmp(O7, opr2->as_constant_ptr()->as_jint()); 1765 } else { 1766 ShouldNotReachHere(); 1767 } 1768 } 1769 1770 1771 void LIR_Assembler::comp_fl2i(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst, LIR_Op2* op){ 1772 if (code == lir_cmp_fd2i || code == lir_ucmp_fd2i) { 1773 bool is_unordered_less = (code == lir_ucmp_fd2i); 1774 if (left->is_single_fpu()) { 1775 __ float_cmp(true, is_unordered_less ? -1 : 1, left->as_float_reg(), right->as_float_reg(), dst->as_register()); 1776 } else if (left->is_double_fpu()) { 1777 __ float_cmp(false, is_unordered_less ? -1 : 1, left->as_double_reg(), right->as_double_reg(), dst->as_register()); 1778 } else { 1779 ShouldNotReachHere(); 1780 } 1781 } else if (code == lir_cmp_l2i) { 1782 #ifdef _LP64 1783 __ lcmp(left->as_register_lo(), right->as_register_lo(), dst->as_register()); 1784 #else 1785 __ lcmp(left->as_register_hi(), left->as_register_lo(), 1786 right->as_register_hi(), right->as_register_lo(), 1787 dst->as_register()); 1788 #endif 1789 } else { 1790 ShouldNotReachHere(); 1791 } 1792 } 1793 1794 1795 void LIR_Assembler::cmove(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result) { 1796 1797 Assembler::Condition acond; 1798 switch (condition) { 1799 case lir_cond_equal: acond = Assembler::equal; break; 1800 case lir_cond_notEqual: acond = Assembler::notEqual; break; 1801 case lir_cond_less: acond = Assembler::less; break; 1802 case lir_cond_lessEqual: acond = Assembler::lessEqual; break; 1803 case lir_cond_greaterEqual: acond = Assembler::greaterEqual; break; 1804 case lir_cond_greater: acond = Assembler::greater; break; 1805 case lir_cond_aboveEqual: acond = Assembler::greaterEqualUnsigned; break; 1806 case lir_cond_belowEqual: acond = Assembler::lessEqualUnsigned; break; 1807 default: ShouldNotReachHere(); 1808 }; 1809 1810 if (opr1->is_constant() && opr1->type() == T_INT) { 1811 Register dest = result->as_register(); 1812 // load up first part of constant before branch 1813 // and do the rest in the delay slot. 1814 if (!Assembler::is_simm13(opr1->as_jint())) { 1815 __ sethi(opr1->as_jint(), dest); 1816 } 1817 } else if (opr1->is_constant()) { 1818 const2reg(opr1, result, lir_patch_none, NULL); 1819 } else if (opr1->is_register()) { 1820 reg2reg(opr1, result); 1821 } else if (opr1->is_stack()) { 1822 stack2reg(opr1, result, result->type()); 1823 } else { 1824 ShouldNotReachHere(); 1825 } 1826 Label skip; 1827 __ br(acond, false, Assembler::pt, skip); 1828 if (opr1->is_constant() && opr1->type() == T_INT) { 1829 Register dest = result->as_register(); 1830 if (Assembler::is_simm13(opr1->as_jint())) { 1831 __ delayed()->or3(G0, opr1->as_jint(), dest); 1832 } else { 1833 // the sethi has been done above, so just put in the low 10 bits 1834 __ delayed()->or3(dest, opr1->as_jint() & 0x3ff, dest); 1835 } 1836 } else { 1837 // can't do anything useful in the delay slot 1838 __ delayed()->nop(); 1839 } 1840 if (opr2->is_constant()) { 1841 const2reg(opr2, result, lir_patch_none, NULL); 1842 } else if (opr2->is_register()) { 1843 reg2reg(opr2, result); 1844 } else if (opr2->is_stack()) { 1845 stack2reg(opr2, result, result->type()); 1846 } else { 1847 ShouldNotReachHere(); 1848 } 1849 __ bind(skip); 1850 } 1851 1852 1853 void LIR_Assembler::arith_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest, CodeEmitInfo* info, bool pop_fpu_stack) { 1854 assert(info == NULL, "unused on this code path"); 1855 assert(left->is_register(), "wrong items state"); 1856 assert(dest->is_register(), "wrong items state"); 1857 1858 if (right->is_register()) { 1859 if (dest->is_float_kind()) { 1860 1861 FloatRegister lreg, rreg, res; 1862 FloatRegisterImpl::Width w; 1863 if (right->is_single_fpu()) { 1864 w = FloatRegisterImpl::S; 1865 lreg = left->as_float_reg(); 1866 rreg = right->as_float_reg(); 1867 res = dest->as_float_reg(); 1868 } else { 1869 w = FloatRegisterImpl::D; 1870 lreg = left->as_double_reg(); 1871 rreg = right->as_double_reg(); 1872 res = dest->as_double_reg(); 1873 } 1874 1875 switch (code) { 1876 case lir_add: __ fadd(w, lreg, rreg, res); break; 1877 case lir_sub: __ fsub(w, lreg, rreg, res); break; 1878 case lir_mul: // fall through 1879 case lir_mul_strictfp: __ fmul(w, lreg, rreg, res); break; 1880 case lir_div: // fall through 1881 case lir_div_strictfp: __ fdiv(w, lreg, rreg, res); break; 1882 default: ShouldNotReachHere(); 1883 } 1884 1885 } else if (dest->is_double_cpu()) { 1886 #ifdef _LP64 1887 Register dst_lo = dest->as_register_lo(); 1888 Register op1_lo = left->as_pointer_register(); 1889 Register op2_lo = right->as_pointer_register(); 1890 1891 switch (code) { 1892 case lir_add: 1893 __ add(op1_lo, op2_lo, dst_lo); 1894 break; 1895 1896 case lir_sub: 1897 __ sub(op1_lo, op2_lo, dst_lo); 1898 break; 1899 1900 default: ShouldNotReachHere(); 1901 } 1902 #else 1903 Register op1_lo = left->as_register_lo(); 1904 Register op1_hi = left->as_register_hi(); 1905 Register op2_lo = right->as_register_lo(); 1906 Register op2_hi = right->as_register_hi(); 1907 Register dst_lo = dest->as_register_lo(); 1908 Register dst_hi = dest->as_register_hi(); 1909 1910 switch (code) { 1911 case lir_add: 1912 __ addcc(op1_lo, op2_lo, dst_lo); 1913 __ addc (op1_hi, op2_hi, dst_hi); 1914 break; 1915 1916 case lir_sub: 1917 __ subcc(op1_lo, op2_lo, dst_lo); 1918 __ subc (op1_hi, op2_hi, dst_hi); 1919 break; 1920 1921 default: ShouldNotReachHere(); 1922 } 1923 #endif 1924 } else { 1925 assert (right->is_single_cpu(), "Just Checking"); 1926 1927 Register lreg = left->as_register(); 1928 Register res = dest->as_register(); 1929 Register rreg = right->as_register(); 1930 switch (code) { 1931 case lir_add: __ add (lreg, rreg, res); break; 1932 case lir_sub: __ sub (lreg, rreg, res); break; 1933 case lir_mul: __ mult (lreg, rreg, res); break; 1934 default: ShouldNotReachHere(); 1935 } 1936 } 1937 } else { 1938 assert (right->is_constant(), "must be constant"); 1939 1940 if (dest->is_single_cpu()) { 1941 Register lreg = left->as_register(); 1942 Register res = dest->as_register(); 1943 int simm13 = right->as_constant_ptr()->as_jint(); 1944 1945 switch (code) { 1946 case lir_add: __ add (lreg, simm13, res); break; 1947 case lir_sub: __ sub (lreg, simm13, res); break; 1948 case lir_mul: __ mult (lreg, simm13, res); break; 1949 default: ShouldNotReachHere(); 1950 } 1951 } else { 1952 Register lreg = left->as_pointer_register(); 1953 Register res = dest->as_register_lo(); 1954 long con = right->as_constant_ptr()->as_jlong(); 1955 assert(Assembler::is_simm13(con), "must be simm13"); 1956 1957 switch (code) { 1958 case lir_add: __ add (lreg, (int)con, res); break; 1959 case lir_sub: __ sub (lreg, (int)con, res); break; 1960 case lir_mul: __ mult (lreg, (int)con, res); break; 1961 default: ShouldNotReachHere(); 1962 } 1963 } 1964 } 1965 } 1966 1967 1968 void LIR_Assembler::fpop() { 1969 // do nothing 1970 } 1971 1972 1973 void LIR_Assembler::intrinsic_op(LIR_Code code, LIR_Opr value, LIR_Opr thread, LIR_Opr dest, LIR_Op* op) { 1974 switch (code) { 1975 case lir_sin: 1976 case lir_tan: 1977 case lir_cos: { 1978 assert(thread->is_valid(), "preserve the thread object for performance reasons"); 1979 assert(dest->as_double_reg() == F0, "the result will be in f0/f1"); 1980 break; 1981 } 1982 case lir_sqrt: { 1983 assert(!thread->is_valid(), "there is no need for a thread_reg for dsqrt"); 1984 FloatRegister src_reg = value->as_double_reg(); 1985 FloatRegister dst_reg = dest->as_double_reg(); 1986 __ fsqrt(FloatRegisterImpl::D, src_reg, dst_reg); 1987 break; 1988 } 1989 case lir_abs: { 1990 assert(!thread->is_valid(), "there is no need for a thread_reg for fabs"); 1991 FloatRegister src_reg = value->as_double_reg(); 1992 FloatRegister dst_reg = dest->as_double_reg(); 1993 __ fabs(FloatRegisterImpl::D, src_reg, dst_reg); 1994 break; 1995 } 1996 default: { 1997 ShouldNotReachHere(); 1998 break; 1999 } 2000 } 2001 } 2002 2003 2004 void LIR_Assembler::logic_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest) { 2005 if (right->is_constant()) { 2006 if (dest->is_single_cpu()) { 2007 int simm13 = right->as_constant_ptr()->as_jint(); 2008 switch (code) { 2009 case lir_logic_and: __ and3 (left->as_register(), simm13, dest->as_register()); break; 2010 case lir_logic_or: __ or3 (left->as_register(), simm13, dest->as_register()); break; 2011 case lir_logic_xor: __ xor3 (left->as_register(), simm13, dest->as_register()); break; 2012 default: ShouldNotReachHere(); 2013 } 2014 } else { 2015 long c = right->as_constant_ptr()->as_jlong(); 2016 assert(c == (int)c && Assembler::is_simm13(c), "out of range"); 2017 int simm13 = (int)c; 2018 switch (code) { 2019 case lir_logic_and: 2020 #ifndef _LP64 2021 __ and3 (left->as_register_hi(), 0, dest->as_register_hi()); 2022 #endif 2023 __ and3 (left->as_register_lo(), simm13, dest->as_register_lo()); 2024 break; 2025 2026 case lir_logic_or: 2027 #ifndef _LP64 2028 __ or3 (left->as_register_hi(), 0, dest->as_register_hi()); 2029 #endif 2030 __ or3 (left->as_register_lo(), simm13, dest->as_register_lo()); 2031 break; 2032 2033 case lir_logic_xor: 2034 #ifndef _LP64 2035 __ xor3 (left->as_register_hi(), 0, dest->as_register_hi()); 2036 #endif 2037 __ xor3 (left->as_register_lo(), simm13, dest->as_register_lo()); 2038 break; 2039 2040 default: ShouldNotReachHere(); 2041 } 2042 } 2043 } else { 2044 assert(right->is_register(), "right should be in register"); 2045 2046 if (dest->is_single_cpu()) { 2047 switch (code) { 2048 case lir_logic_and: __ and3 (left->as_register(), right->as_register(), dest->as_register()); break; 2049 case lir_logic_or: __ or3 (left->as_register(), right->as_register(), dest->as_register()); break; 2050 case lir_logic_xor: __ xor3 (left->as_register(), right->as_register(), dest->as_register()); break; 2051 default: ShouldNotReachHere(); 2052 } 2053 } else { 2054 #ifdef _LP64 2055 Register l = (left->is_single_cpu() && left->is_oop_register()) ? left->as_register() : 2056 left->as_register_lo(); 2057 Register r = (right->is_single_cpu() && right->is_oop_register()) ? right->as_register() : 2058 right->as_register_lo(); 2059 2060 switch (code) { 2061 case lir_logic_and: __ and3 (l, r, dest->as_register_lo()); break; 2062 case lir_logic_or: __ or3 (l, r, dest->as_register_lo()); break; 2063 case lir_logic_xor: __ xor3 (l, r, dest->as_register_lo()); break; 2064 default: ShouldNotReachHere(); 2065 } 2066 #else 2067 switch (code) { 2068 case lir_logic_and: 2069 __ and3 (left->as_register_hi(), right->as_register_hi(), dest->as_register_hi()); 2070 __ and3 (left->as_register_lo(), right->as_register_lo(), dest->as_register_lo()); 2071 break; 2072 2073 case lir_logic_or: 2074 __ or3 (left->as_register_hi(), right->as_register_hi(), dest->as_register_hi()); 2075 __ or3 (left->as_register_lo(), right->as_register_lo(), dest->as_register_lo()); 2076 break; 2077 2078 case lir_logic_xor: 2079 __ xor3 (left->as_register_hi(), right->as_register_hi(), dest->as_register_hi()); 2080 __ xor3 (left->as_register_lo(), right->as_register_lo(), dest->as_register_lo()); 2081 break; 2082 2083 default: ShouldNotReachHere(); 2084 } 2085 #endif 2086 } 2087 } 2088 } 2089 2090 2091 int LIR_Assembler::shift_amount(BasicType t) { 2092 int elem_size = type2aelembytes(t); 2093 switch (elem_size) { 2094 case 1 : return 0; 2095 case 2 : return 1; 2096 case 4 : return 2; 2097 case 8 : return 3; 2098 } 2099 ShouldNotReachHere(); 2100 return -1; 2101 } 2102 2103 2104 void LIR_Assembler::throw_op(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) { 2105 assert(exceptionOop->as_register() == Oexception, "should match"); 2106 assert(exceptionPC->as_register() == Oissuing_pc, "should match"); 2107 2108 info->add_register_oop(exceptionOop); 2109 2110 // reuse the debug info from the safepoint poll for the throw op itself 2111 address pc_for_athrow = __ pc(); 2112 int pc_for_athrow_offset = __ offset(); 2113 RelocationHolder rspec = internal_word_Relocation::spec(pc_for_athrow); 2114 __ set(pc_for_athrow, Oissuing_pc, rspec); 2115 add_call_info(pc_for_athrow_offset, info); // for exception handler 2116 2117 __ call(Runtime1::entry_for(Runtime1::handle_exception_id), relocInfo::runtime_call_type); 2118 __ delayed()->nop(); 2119 } 2120 2121 2122 void LIR_Assembler::unwind_op(LIR_Opr exceptionOop) { 2123 assert(exceptionOop->as_register() == Oexception, "should match"); 2124 2125 __ br(Assembler::always, false, Assembler::pt, _unwind_handler_entry); 2126 __ delayed()->nop(); 2127 } 2128 2129 2130 void LIR_Assembler::emit_arraycopy(LIR_OpArrayCopy* op) { 2131 Register src = op->src()->as_register(); 2132 Register dst = op->dst()->as_register(); 2133 Register src_pos = op->src_pos()->as_register(); 2134 Register dst_pos = op->dst_pos()->as_register(); 2135 Register length = op->length()->as_register(); 2136 Register tmp = op->tmp()->as_register(); 2137 Register tmp2 = O7; 2138 2139 int flags = op->flags(); 2140 ciArrayKlass* default_type = op->expected_type(); 2141 BasicType basic_type = default_type != NULL ? default_type->element_type()->basic_type() : T_ILLEGAL; 2142 if (basic_type == T_ARRAY) basic_type = T_OBJECT; 2143 2144 // set up the arraycopy stub information 2145 ArrayCopyStub* stub = op->stub(); 2146 2147 // always do stub if no type information is available. it's ok if 2148 // the known type isn't loaded since the code sanity checks 2149 // in debug mode and the type isn't required when we know the exact type 2150 // also check that the type is an array type. 2151 // We also, for now, always call the stub if the barrier set requires a 2152 // write_ref_pre barrier (which the stub does, but none of the optimized 2153 // cases currently does). 2154 if (op->expected_type() == NULL || 2155 Universe::heap()->barrier_set()->has_write_ref_pre_barrier()) { 2156 __ mov(src, O0); 2157 __ mov(src_pos, O1); 2158 __ mov(dst, O2); 2159 __ mov(dst_pos, O3); 2160 __ mov(length, O4); 2161 __ call_VM_leaf(tmp, CAST_FROM_FN_PTR(address, Runtime1::arraycopy)); 2162 2163 __ br_zero(Assembler::less, false, Assembler::pn, O0, *stub->entry()); 2164 __ delayed()->nop(); 2165 __ bind(*stub->continuation()); 2166 return; 2167 } 2168 2169 assert(default_type != NULL && default_type->is_array_klass(), "must be true at this point"); 2170 2171 // make sure src and dst are non-null and load array length 2172 if (flags & LIR_OpArrayCopy::src_null_check) { 2173 __ tst(src); 2174 __ br(Assembler::equal, false, Assembler::pn, *stub->entry()); 2175 __ delayed()->nop(); 2176 } 2177 2178 if (flags & LIR_OpArrayCopy::dst_null_check) { 2179 __ tst(dst); 2180 __ br(Assembler::equal, false, Assembler::pn, *stub->entry()); 2181 __ delayed()->nop(); 2182 } 2183 2184 if (flags & LIR_OpArrayCopy::src_pos_positive_check) { 2185 // test src_pos register 2186 __ tst(src_pos); 2187 __ br(Assembler::less, false, Assembler::pn, *stub->entry()); 2188 __ delayed()->nop(); 2189 } 2190 2191 if (flags & LIR_OpArrayCopy::dst_pos_positive_check) { 2192 // test dst_pos register 2193 __ tst(dst_pos); 2194 __ br(Assembler::less, false, Assembler::pn, *stub->entry()); 2195 __ delayed()->nop(); 2196 } 2197 2198 if (flags & LIR_OpArrayCopy::length_positive_check) { 2199 // make sure length isn't negative 2200 __ tst(length); 2201 __ br(Assembler::less, false, Assembler::pn, *stub->entry()); 2202 __ delayed()->nop(); 2203 } 2204 2205 if (flags & LIR_OpArrayCopy::src_range_check) { 2206 __ ld(src, arrayOopDesc::length_offset_in_bytes(), tmp2); 2207 __ add(length, src_pos, tmp); 2208 __ cmp(tmp2, tmp); 2209 __ br(Assembler::carrySet, false, Assembler::pn, *stub->entry()); 2210 __ delayed()->nop(); 2211 } 2212 2213 if (flags & LIR_OpArrayCopy::dst_range_check) { 2214 __ ld(dst, arrayOopDesc::length_offset_in_bytes(), tmp2); 2215 __ add(length, dst_pos, tmp); 2216 __ cmp(tmp2, tmp); 2217 __ br(Assembler::carrySet, false, Assembler::pn, *stub->entry()); 2218 __ delayed()->nop(); 2219 } 2220 2221 if (flags & LIR_OpArrayCopy::type_check) { 2222 __ ld_ptr(src, oopDesc::klass_offset_in_bytes(), tmp); 2223 __ ld_ptr(dst, oopDesc::klass_offset_in_bytes(), tmp2); 2224 __ cmp(tmp, tmp2); 2225 __ br(Assembler::notEqual, false, Assembler::pt, *stub->entry()); 2226 __ delayed()->nop(); 2227 } 2228 2229 #ifdef ASSERT 2230 if (basic_type != T_OBJECT || !(flags & LIR_OpArrayCopy::type_check)) { 2231 // Sanity check the known type with the incoming class. For the 2232 // primitive case the types must match exactly with src.klass and 2233 // dst.klass each exactly matching the default type. For the 2234 // object array case, if no type check is needed then either the 2235 // dst type is exactly the expected type and the src type is a 2236 // subtype which we can't check or src is the same array as dst 2237 // but not necessarily exactly of type default_type. 2238 Label known_ok, halt; 2239 jobject2reg(op->expected_type()->constant_encoding(), tmp); 2240 __ ld_ptr(dst, oopDesc::klass_offset_in_bytes(), tmp2); 2241 if (basic_type != T_OBJECT) { 2242 __ cmp(tmp, tmp2); 2243 __ br(Assembler::notEqual, false, Assembler::pn, halt); 2244 __ delayed()->ld_ptr(src, oopDesc::klass_offset_in_bytes(), tmp2); 2245 __ cmp(tmp, tmp2); 2246 __ br(Assembler::equal, false, Assembler::pn, known_ok); 2247 __ delayed()->nop(); 2248 } else { 2249 __ cmp(tmp, tmp2); 2250 __ br(Assembler::equal, false, Assembler::pn, known_ok); 2251 __ delayed()->cmp(src, dst); 2252 __ br(Assembler::equal, false, Assembler::pn, known_ok); 2253 __ delayed()->nop(); 2254 } 2255 __ bind(halt); 2256 __ stop("incorrect type information in arraycopy"); 2257 __ bind(known_ok); 2258 } 2259 #endif 2260 2261 int shift = shift_amount(basic_type); 2262 2263 Register src_ptr = O0; 2264 Register dst_ptr = O1; 2265 Register len = O2; 2266 2267 __ add(src, arrayOopDesc::base_offset_in_bytes(basic_type), src_ptr); 2268 LP64_ONLY(__ sra(src_pos, 0, src_pos);) //higher 32bits must be null 2269 if (shift == 0) { 2270 __ add(src_ptr, src_pos, src_ptr); 2271 } else { 2272 __ sll(src_pos, shift, tmp); 2273 __ add(src_ptr, tmp, src_ptr); 2274 } 2275 2276 __ add(dst, arrayOopDesc::base_offset_in_bytes(basic_type), dst_ptr); 2277 LP64_ONLY(__ sra(dst_pos, 0, dst_pos);) //higher 32bits must be null 2278 if (shift == 0) { 2279 __ add(dst_ptr, dst_pos, dst_ptr); 2280 } else { 2281 __ sll(dst_pos, shift, tmp); 2282 __ add(dst_ptr, tmp, dst_ptr); 2283 } 2284 2285 if (basic_type != T_OBJECT) { 2286 if (shift == 0) { 2287 __ mov(length, len); 2288 } else { 2289 __ sll(length, shift, len); 2290 } 2291 __ call_VM_leaf(tmp, CAST_FROM_FN_PTR(address, Runtime1::primitive_arraycopy)); 2292 } else { 2293 // oop_arraycopy takes a length in number of elements, so don't scale it. 2294 __ mov(length, len); 2295 __ call_VM_leaf(tmp, CAST_FROM_FN_PTR(address, Runtime1::oop_arraycopy)); 2296 } 2297 2298 __ bind(*stub->continuation()); 2299 } 2300 2301 2302 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, LIR_Opr count, LIR_Opr dest, LIR_Opr tmp) { 2303 if (dest->is_single_cpu()) { 2304 #ifdef _LP64 2305 if (left->type() == T_OBJECT) { 2306 switch (code) { 2307 case lir_shl: __ sllx (left->as_register(), count->as_register(), dest->as_register()); break; 2308 case lir_shr: __ srax (left->as_register(), count->as_register(), dest->as_register()); break; 2309 case lir_ushr: __ srl (left->as_register(), count->as_register(), dest->as_register()); break; 2310 default: ShouldNotReachHere(); 2311 } 2312 } else 2313 #endif 2314 switch (code) { 2315 case lir_shl: __ sll (left->as_register(), count->as_register(), dest->as_register()); break; 2316 case lir_shr: __ sra (left->as_register(), count->as_register(), dest->as_register()); break; 2317 case lir_ushr: __ srl (left->as_register(), count->as_register(), dest->as_register()); break; 2318 default: ShouldNotReachHere(); 2319 } 2320 } else { 2321 #ifdef _LP64 2322 switch (code) { 2323 case lir_shl: __ sllx (left->as_register_lo(), count->as_register(), dest->as_register_lo()); break; 2324 case lir_shr: __ srax (left->as_register_lo(), count->as_register(), dest->as_register_lo()); break; 2325 case lir_ushr: __ srlx (left->as_register_lo(), count->as_register(), dest->as_register_lo()); break; 2326 default: ShouldNotReachHere(); 2327 } 2328 #else 2329 switch (code) { 2330 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; 2331 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; 2332 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; 2333 default: ShouldNotReachHere(); 2334 } 2335 #endif 2336 } 2337 } 2338 2339 2340 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, jint count, LIR_Opr dest) { 2341 #ifdef _LP64 2342 if (left->type() == T_OBJECT) { 2343 count = count & 63; // shouldn't shift by more than sizeof(intptr_t) 2344 Register l = left->as_register(); 2345 Register d = dest->as_register_lo(); 2346 switch (code) { 2347 case lir_shl: __ sllx (l, count, d); break; 2348 case lir_shr: __ srax (l, count, d); break; 2349 case lir_ushr: __ srlx (l, count, d); break; 2350 default: ShouldNotReachHere(); 2351 } 2352 return; 2353 } 2354 #endif 2355 2356 if (dest->is_single_cpu()) { 2357 count = count & 0x1F; // Java spec 2358 switch (code) { 2359 case lir_shl: __ sll (left->as_register(), count, dest->as_register()); break; 2360 case lir_shr: __ sra (left->as_register(), count, dest->as_register()); break; 2361 case lir_ushr: __ srl (left->as_register(), count, dest->as_register()); break; 2362 default: ShouldNotReachHere(); 2363 } 2364 } else if (dest->is_double_cpu()) { 2365 count = count & 63; // Java spec 2366 switch (code) { 2367 case lir_shl: __ sllx (left->as_pointer_register(), count, dest->as_pointer_register()); break; 2368 case lir_shr: __ srax (left->as_pointer_register(), count, dest->as_pointer_register()); break; 2369 case lir_ushr: __ srlx (left->as_pointer_register(), count, dest->as_pointer_register()); break; 2370 default: ShouldNotReachHere(); 2371 } 2372 } else { 2373 ShouldNotReachHere(); 2374 } 2375 } 2376 2377 2378 void LIR_Assembler::emit_alloc_obj(LIR_OpAllocObj* op) { 2379 assert(op->tmp1()->as_register() == G1 && 2380 op->tmp2()->as_register() == G3 && 2381 op->tmp3()->as_register() == G4 && 2382 op->obj()->as_register() == O0 && 2383 op->klass()->as_register() == G5, "must be"); 2384 if (op->init_check()) { 2385 __ ld(op->klass()->as_register(), 2386 instanceKlass::init_state_offset_in_bytes() + sizeof(oopDesc), 2387 op->tmp1()->as_register()); 2388 add_debug_info_for_null_check_here(op->stub()->info()); 2389 __ cmp(op->tmp1()->as_register(), instanceKlass::fully_initialized); 2390 __ br(Assembler::notEqual, false, Assembler::pn, *op->stub()->entry()); 2391 __ delayed()->nop(); 2392 } 2393 __ allocate_object(op->obj()->as_register(), 2394 op->tmp1()->as_register(), 2395 op->tmp2()->as_register(), 2396 op->tmp3()->as_register(), 2397 op->header_size(), 2398 op->object_size(), 2399 op->klass()->as_register(), 2400 *op->stub()->entry()); 2401 __ bind(*op->stub()->continuation()); 2402 __ verify_oop(op->obj()->as_register()); 2403 } 2404 2405 2406 void LIR_Assembler::emit_alloc_array(LIR_OpAllocArray* op) { 2407 assert(op->tmp1()->as_register() == G1 && 2408 op->tmp2()->as_register() == G3 && 2409 op->tmp3()->as_register() == G4 && 2410 op->tmp4()->as_register() == O1 && 2411 op->klass()->as_register() == G5, "must be"); 2412 if (UseSlowPath || 2413 (!UseFastNewObjectArray && (op->type() == T_OBJECT || op->type() == T_ARRAY)) || 2414 (!UseFastNewTypeArray && (op->type() != T_OBJECT && op->type() != T_ARRAY))) { 2415 __ br(Assembler::always, false, Assembler::pt, *op->stub()->entry()); 2416 __ delayed()->nop(); 2417 } else { 2418 __ allocate_array(op->obj()->as_register(), 2419 op->len()->as_register(), 2420 op->tmp1()->as_register(), 2421 op->tmp2()->as_register(), 2422 op->tmp3()->as_register(), 2423 arrayOopDesc::header_size(op->type()), 2424 type2aelembytes(op->type()), 2425 op->klass()->as_register(), 2426 *op->stub()->entry()); 2427 } 2428 __ bind(*op->stub()->continuation()); 2429 } 2430 2431 2432 void LIR_Assembler::type_profile_helper(Register mdo, int mdo_offset_bias, 2433 ciMethodData *md, ciProfileData *data, 2434 Register recv, Register tmp1, Label* update_done) { 2435 uint i; 2436 for (i = 0; i < VirtualCallData::row_limit(); i++) { 2437 Label next_test; 2438 // See if the receiver is receiver[n]. 2439 Address receiver_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i)) - 2440 mdo_offset_bias); 2441 __ ld_ptr(receiver_addr, tmp1); 2442 __ verify_oop(tmp1); 2443 __ cmp(recv, tmp1); 2444 __ brx(Assembler::notEqual, false, Assembler::pt, next_test); 2445 __ delayed()->nop(); 2446 Address data_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i)) - 2447 mdo_offset_bias); 2448 __ ld_ptr(data_addr, tmp1); 2449 __ add(tmp1, DataLayout::counter_increment, tmp1); 2450 __ st_ptr(tmp1, data_addr); 2451 __ ba(false, *update_done); 2452 __ delayed()->nop(); 2453 __ bind(next_test); 2454 } 2455 2456 // Didn't find receiver; find next empty slot and fill it in 2457 for (i = 0; i < VirtualCallData::row_limit(); i++) { 2458 Label next_test; 2459 Address recv_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i)) - 2460 mdo_offset_bias); 2461 load(recv_addr, tmp1, T_OBJECT); 2462 __ br_notnull(tmp1, false, Assembler::pt, next_test); 2463 __ delayed()->nop(); 2464 __ st_ptr(recv, recv_addr); 2465 __ set(DataLayout::counter_increment, tmp1); 2466 __ st_ptr(tmp1, mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i)) - 2467 mdo_offset_bias); 2468 __ ba(false, *update_done); 2469 __ delayed()->nop(); 2470 __ bind(next_test); 2471 } 2472 } 2473 2474 2475 void LIR_Assembler::setup_md_access(ciMethod* method, int bci, 2476 ciMethodData*& md, ciProfileData*& data, int& mdo_offset_bias) { 2477 md = method->method_data(); 2478 if (md == NULL) { 2479 bailout("out of memory building methodDataOop"); 2480 return; 2481 } 2482 data = md->bci_to_data(bci); 2483 assert(data != NULL, "need data for checkcast"); 2484 assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for type check"); 2485 if (!Assembler::is_simm13(md->byte_offset_of_slot(data, DataLayout::header_offset()) + data->size_in_bytes())) { 2486 // The offset is large so bias the mdo by the base of the slot so 2487 // that the ld can use simm13s to reference the slots of the data 2488 mdo_offset_bias = md->byte_offset_of_slot(data, DataLayout::header_offset()); 2489 } 2490 } 2491 2492 void LIR_Assembler::emit_typecheck_helper(LIR_OpTypeCheck *op, Label* success, Label* failure, Label* obj_is_null) { 2493 // we always need a stub for the failure case. 2494 CodeStub* stub = op->stub(); 2495 Register obj = op->object()->as_register(); 2496 Register k_RInfo = op->tmp1()->as_register(); 2497 Register klass_RInfo = op->tmp2()->as_register(); 2498 Register dst = op->result_opr()->as_register(); 2499 Register Rtmp1 = op->tmp3()->as_register(); 2500 ciKlass* k = op->klass(); 2501 2502 2503 if (obj == k_RInfo) { 2504 k_RInfo = klass_RInfo; 2505 klass_RInfo = obj; 2506 } 2507 2508 ciMethodData* md; 2509 ciProfileData* data; 2510 int mdo_offset_bias = 0; 2511 if (op->should_profile()) { 2512 ciMethod* method = op->profiled_method(); 2513 assert(method != NULL, "Should have method"); 2514 setup_md_access(method, op->profiled_bci(), md, data, mdo_offset_bias); 2515 2516 Label not_null; 2517 __ br_notnull(obj, false, Assembler::pn, not_null); 2518 __ delayed()->nop(); 2519 Register mdo = k_RInfo; 2520 Register data_val = Rtmp1; 2521 jobject2reg(md->constant_encoding(), mdo); 2522 if (mdo_offset_bias > 0) { 2523 __ set(mdo_offset_bias, data_val); 2524 __ add(mdo, data_val, mdo); 2525 } 2526 Address flags_addr(mdo, md->byte_offset_of_slot(data, DataLayout::flags_offset()) - mdo_offset_bias); 2527 __ ldub(flags_addr, data_val); 2528 __ or3(data_val, BitData::null_seen_byte_constant(), data_val); 2529 __ stb(data_val, flags_addr); 2530 __ ba(false, *obj_is_null); 2531 __ delayed()->nop(); 2532 __ bind(not_null); 2533 } else { 2534 __ br_null(obj, false, Assembler::pn, *obj_is_null); 2535 __ delayed()->nop(); 2536 } 2537 2538 Label profile_cast_failure, profile_cast_success; 2539 Label *failure_target = op->should_profile() ? &profile_cast_failure : failure; 2540 Label *success_target = op->should_profile() ? &profile_cast_success : success; 2541 2542 // patching may screw with our temporaries on sparc, 2543 // so let's do it before loading the class 2544 if (k->is_loaded()) { 2545 jobject2reg(k->constant_encoding(), k_RInfo); 2546 } else { 2547 jobject2reg_with_patching(k_RInfo, op->info_for_patch()); 2548 } 2549 assert(obj != k_RInfo, "must be different"); 2550 2551 // get object class 2552 // not a safepoint as obj null check happens earlier 2553 load(obj, oopDesc::klass_offset_in_bytes(), klass_RInfo, T_OBJECT, NULL); 2554 if (op->fast_check()) { 2555 assert_different_registers(klass_RInfo, k_RInfo); 2556 __ cmp(k_RInfo, klass_RInfo); 2557 __ brx(Assembler::notEqual, false, Assembler::pt, *failure_target); 2558 __ delayed()->nop(); 2559 } else { 2560 bool need_slow_path = true; 2561 if (k->is_loaded()) { 2562 if (k->super_check_offset() != sizeof(oopDesc) + Klass::secondary_super_cache_offset_in_bytes()) 2563 need_slow_path = false; 2564 // perform the fast part of the checking logic 2565 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, noreg, 2566 (need_slow_path ? success_target : NULL), 2567 failure_target, NULL, 2568 RegisterOrConstant(k->super_check_offset())); 2569 } else { 2570 // perform the fast part of the checking logic 2571 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, O7, success_target, 2572 failure_target, NULL); 2573 } 2574 if (need_slow_path) { 2575 // call out-of-line instance of __ check_klass_subtype_slow_path(...): 2576 assert(klass_RInfo == G3 && k_RInfo == G1, "incorrect call setup"); 2577 __ call(Runtime1::entry_for(Runtime1::slow_subtype_check_id), relocInfo::runtime_call_type); 2578 __ delayed()->nop(); 2579 __ cmp(G3, 0); 2580 __ br(Assembler::equal, false, Assembler::pn, *failure_target); 2581 __ delayed()->nop(); 2582 // Fall through to success case 2583 } 2584 } 2585 2586 if (op->should_profile()) { 2587 Register mdo = klass_RInfo, recv = k_RInfo, tmp1 = Rtmp1; 2588 assert_different_registers(obj, mdo, recv, tmp1); 2589 __ bind(profile_cast_success); 2590 jobject2reg(md->constant_encoding(), mdo); 2591 if (mdo_offset_bias > 0) { 2592 __ set(mdo_offset_bias, tmp1); 2593 __ add(mdo, tmp1, mdo); 2594 } 2595 load(Address(obj, oopDesc::klass_offset_in_bytes()), recv, T_OBJECT); 2596 type_profile_helper(mdo, mdo_offset_bias, md, data, recv, tmp1, success); 2597 // Jump over the failure case 2598 __ ba(false, *success); 2599 __ delayed()->nop(); 2600 // Cast failure case 2601 __ bind(profile_cast_failure); 2602 jobject2reg(md->constant_encoding(), mdo); 2603 if (mdo_offset_bias > 0) { 2604 __ set(mdo_offset_bias, tmp1); 2605 __ add(mdo, tmp1, mdo); 2606 } 2607 Address data_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset()) - mdo_offset_bias); 2608 __ ld_ptr(data_addr, tmp1); 2609 __ sub(tmp1, DataLayout::counter_increment, tmp1); 2610 __ st_ptr(tmp1, data_addr); 2611 __ ba(false, *failure); 2612 __ delayed()->nop(); 2613 } 2614 __ ba(false, *success); 2615 __ delayed()->nop(); 2616 } 2617 2618 void LIR_Assembler::emit_opTypeCheck(LIR_OpTypeCheck* op) { 2619 LIR_Code code = op->code(); 2620 if (code == lir_store_check) { 2621 Register value = op->object()->as_register(); 2622 Register array = op->array()->as_register(); 2623 Register k_RInfo = op->tmp1()->as_register(); 2624 Register klass_RInfo = op->tmp2()->as_register(); 2625 Register Rtmp1 = op->tmp3()->as_register(); 2626 2627 __ verify_oop(value); 2628 CodeStub* stub = op->stub(); 2629 // check if it needs to be profiled 2630 ciMethodData* md; 2631 ciProfileData* data; 2632 int mdo_offset_bias = 0; 2633 if (op->should_profile()) { 2634 ciMethod* method = op->profiled_method(); 2635 assert(method != NULL, "Should have method"); 2636 setup_md_access(method, op->profiled_bci(), md, data, mdo_offset_bias); 2637 } 2638 Label profile_cast_success, profile_cast_failure, done; 2639 Label *success_target = op->should_profile() ? &profile_cast_success : &done; 2640 Label *failure_target = op->should_profile() ? &profile_cast_failure : stub->entry(); 2641 2642 if (op->should_profile()) { 2643 Label not_null; 2644 __ br_notnull(value, false, Assembler::pn, not_null); 2645 __ delayed()->nop(); 2646 Register mdo = k_RInfo; 2647 Register data_val = Rtmp1; 2648 jobject2reg(md->constant_encoding(), mdo); 2649 if (mdo_offset_bias > 0) { 2650 __ set(mdo_offset_bias, data_val); 2651 __ add(mdo, data_val, mdo); 2652 } 2653 Address flags_addr(mdo, md->byte_offset_of_slot(data, DataLayout::flags_offset()) - mdo_offset_bias); 2654 __ ldub(flags_addr, data_val); 2655 __ or3(data_val, BitData::null_seen_byte_constant(), data_val); 2656 __ stb(data_val, flags_addr); 2657 __ ba(false, done); 2658 __ delayed()->nop(); 2659 __ bind(not_null); 2660 } else { 2661 __ br_null(value, false, Assembler::pn, done); 2662 __ delayed()->nop(); 2663 } 2664 load(array, oopDesc::klass_offset_in_bytes(), k_RInfo, T_OBJECT, op->info_for_exception()); 2665 load(value, oopDesc::klass_offset_in_bytes(), klass_RInfo, T_OBJECT, NULL); 2666 2667 // get instance klass 2668 load(k_RInfo, objArrayKlass::element_klass_offset_in_bytes() + sizeof(oopDesc), k_RInfo, T_OBJECT, NULL); 2669 // perform the fast part of the checking logic 2670 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, O7, success_target, failure_target, NULL); 2671 2672 // call out-of-line instance of __ check_klass_subtype_slow_path(...): 2673 assert(klass_RInfo == G3 && k_RInfo == G1, "incorrect call setup"); 2674 __ call(Runtime1::entry_for(Runtime1::slow_subtype_check_id), relocInfo::runtime_call_type); 2675 __ delayed()->nop(); 2676 __ cmp(G3, 0); 2677 __ br(Assembler::equal, false, Assembler::pn, *failure_target); 2678 __ delayed()->nop(); 2679 // fall through to the success case 2680 2681 if (op->should_profile()) { 2682 Register mdo = klass_RInfo, recv = k_RInfo, tmp1 = Rtmp1; 2683 assert_different_registers(value, mdo, recv, tmp1); 2684 __ bind(profile_cast_success); 2685 jobject2reg(md->constant_encoding(), mdo); 2686 if (mdo_offset_bias > 0) { 2687 __ set(mdo_offset_bias, tmp1); 2688 __ add(mdo, tmp1, mdo); 2689 } 2690 load(Address(value, oopDesc::klass_offset_in_bytes()), recv, T_OBJECT); 2691 type_profile_helper(mdo, mdo_offset_bias, md, data, recv, tmp1, &done); 2692 __ ba(false, done); 2693 __ delayed()->nop(); 2694 // Cast failure case 2695 __ bind(profile_cast_failure); 2696 jobject2reg(md->constant_encoding(), mdo); 2697 if (mdo_offset_bias > 0) { 2698 __ set(mdo_offset_bias, tmp1); 2699 __ add(mdo, tmp1, mdo); 2700 } 2701 Address data_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset()) - mdo_offset_bias); 2702 __ ld_ptr(data_addr, tmp1); 2703 __ sub(tmp1, DataLayout::counter_increment, tmp1); 2704 __ st_ptr(tmp1, data_addr); 2705 __ ba(false, *stub->entry()); 2706 __ delayed()->nop(); 2707 } 2708 __ bind(done); 2709 } else if (code == lir_checkcast) { 2710 Register obj = op->object()->as_register(); 2711 Register dst = op->result_opr()->as_register(); 2712 Label success; 2713 emit_typecheck_helper(op, &success, op->stub()->entry(), &success); 2714 __ bind(success); 2715 __ mov(obj, dst); 2716 } else if (code == lir_instanceof) { 2717 Register obj = op->object()->as_register(); 2718 Register dst = op->result_opr()->as_register(); 2719 Label success, failure, done; 2720 emit_typecheck_helper(op, &success, &failure, &failure); 2721 __ bind(failure); 2722 __ set(0, dst); 2723 __ ba(false, done); 2724 __ delayed()->nop(); 2725 __ bind(success); 2726 __ set(1, dst); 2727 __ bind(done); 2728 } else { 2729 ShouldNotReachHere(); 2730 } 2731 2732 } 2733 2734 2735 void LIR_Assembler::emit_compare_and_swap(LIR_OpCompareAndSwap* op) { 2736 if (op->code() == lir_cas_long) { 2737 assert(VM_Version::supports_cx8(), "wrong machine"); 2738 Register addr = op->addr()->as_pointer_register(); 2739 Register cmp_value_lo = op->cmp_value()->as_register_lo(); 2740 Register cmp_value_hi = op->cmp_value()->as_register_hi(); 2741 Register new_value_lo = op->new_value()->as_register_lo(); 2742 Register new_value_hi = op->new_value()->as_register_hi(); 2743 Register t1 = op->tmp1()->as_register(); 2744 Register t2 = op->tmp2()->as_register(); 2745 #ifdef _LP64 2746 __ mov(cmp_value_lo, t1); 2747 __ mov(new_value_lo, t2); 2748 #else 2749 // move high and low halves of long values into single registers 2750 __ sllx(cmp_value_hi, 32, t1); // shift high half into temp reg 2751 __ srl(cmp_value_lo, 0, cmp_value_lo); // clear upper 32 bits of low half 2752 __ or3(t1, cmp_value_lo, t1); // t1 holds 64-bit compare value 2753 __ sllx(new_value_hi, 32, t2); 2754 __ srl(new_value_lo, 0, new_value_lo); 2755 __ or3(t2, new_value_lo, t2); // t2 holds 64-bit value to swap 2756 #endif 2757 // perform the compare and swap operation 2758 __ casx(addr, t1, t2); 2759 // generate condition code - if the swap succeeded, t2 ("new value" reg) was 2760 // overwritten with the original value in "addr" and will be equal to t1. 2761 __ cmp(t1, t2); 2762 2763 } else if (op->code() == lir_cas_int || op->code() == lir_cas_obj) { 2764 Register addr = op->addr()->as_pointer_register(); 2765 Register cmp_value = op->cmp_value()->as_register(); 2766 Register new_value = op->new_value()->as_register(); 2767 Register t1 = op->tmp1()->as_register(); 2768 Register t2 = op->tmp2()->as_register(); 2769 __ mov(cmp_value, t1); 2770 __ mov(new_value, t2); 2771 #ifdef _LP64 2772 if (op->code() == lir_cas_obj) { 2773 __ casx(addr, t1, t2); 2774 } else 2775 #endif 2776 { 2777 __ cas(addr, t1, t2); 2778 } 2779 __ cmp(t1, t2); 2780 } else { 2781 Unimplemented(); 2782 } 2783 } 2784 2785 void LIR_Assembler::set_24bit_FPU() { 2786 Unimplemented(); 2787 } 2788 2789 2790 void LIR_Assembler::reset_FPU() { 2791 Unimplemented(); 2792 } 2793 2794 2795 void LIR_Assembler::breakpoint() { 2796 __ breakpoint_trap(); 2797 } 2798 2799 2800 void LIR_Assembler::push(LIR_Opr opr) { 2801 Unimplemented(); 2802 } 2803 2804 2805 void LIR_Assembler::pop(LIR_Opr opr) { 2806 Unimplemented(); 2807 } 2808 2809 2810 void LIR_Assembler::monitor_address(int monitor_no, LIR_Opr dst_opr) { 2811 Address mon_addr = frame_map()->address_for_monitor_lock(monitor_no); 2812 Register dst = dst_opr->as_register(); 2813 Register reg = mon_addr.base(); 2814 int offset = mon_addr.disp(); 2815 // compute pointer to BasicLock 2816 if (mon_addr.is_simm13()) { 2817 __ add(reg, offset, dst); 2818 } else { 2819 __ set(offset, dst); 2820 __ add(dst, reg, dst); 2821 } 2822 } 2823 2824 2825 void LIR_Assembler::emit_lock(LIR_OpLock* op) { 2826 Register obj = op->obj_opr()->as_register(); 2827 Register hdr = op->hdr_opr()->as_register(); 2828 Register lock = op->lock_opr()->as_register(); 2829 2830 // obj may not be an oop 2831 if (op->code() == lir_lock) { 2832 MonitorEnterStub* stub = (MonitorEnterStub*)op->stub(); 2833 if (UseFastLocking) { 2834 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); 2835 // add debug info for NullPointerException only if one is possible 2836 if (op->info() != NULL) { 2837 add_debug_info_for_null_check_here(op->info()); 2838 } 2839 __ lock_object(hdr, obj, lock, op->scratch_opr()->as_register(), *op->stub()->entry()); 2840 } else { 2841 // always do slow locking 2842 // note: the slow locking code could be inlined here, however if we use 2843 // slow locking, speed doesn't matter anyway and this solution is 2844 // simpler and requires less duplicated code - additionally, the 2845 // slow locking code is the same in either case which simplifies 2846 // debugging 2847 __ br(Assembler::always, false, Assembler::pt, *op->stub()->entry()); 2848 __ delayed()->nop(); 2849 } 2850 } else { 2851 assert (op->code() == lir_unlock, "Invalid code, expected lir_unlock"); 2852 if (UseFastLocking) { 2853 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); 2854 __ unlock_object(hdr, obj, lock, *op->stub()->entry()); 2855 } else { 2856 // always do slow unlocking 2857 // note: the slow unlocking code could be inlined here, however if we use 2858 // slow unlocking, speed doesn't matter anyway and this solution is 2859 // simpler and requires less duplicated code - additionally, the 2860 // slow unlocking code is the same in either case which simplifies 2861 // debugging 2862 __ br(Assembler::always, false, Assembler::pt, *op->stub()->entry()); 2863 __ delayed()->nop(); 2864 } 2865 } 2866 __ bind(*op->stub()->continuation()); 2867 } 2868 2869 2870 void LIR_Assembler::emit_profile_call(LIR_OpProfileCall* op) { 2871 ciMethod* method = op->profiled_method(); 2872 int bci = op->profiled_bci(); 2873 2874 // Update counter for all call types 2875 ciMethodData* md = method->method_data(); 2876 if (md == NULL) { 2877 bailout("out of memory building methodDataOop"); 2878 return; 2879 } 2880 ciProfileData* data = md->bci_to_data(bci); 2881 assert(data->is_CounterData(), "need CounterData for calls"); 2882 assert(op->mdo()->is_single_cpu(), "mdo must be allocated"); 2883 Register mdo = op->mdo()->as_register(); 2884 #ifdef _LP64 2885 assert(op->tmp1()->is_double_cpu(), "tmp1 must be allocated"); 2886 Register tmp1 = op->tmp1()->as_register_lo(); 2887 #else 2888 assert(op->tmp1()->is_single_cpu(), "tmp1 must be allocated"); 2889 Register tmp1 = op->tmp1()->as_register(); 2890 #endif 2891 jobject2reg(md->constant_encoding(), mdo); 2892 int mdo_offset_bias = 0; 2893 if (!Assembler::is_simm13(md->byte_offset_of_slot(data, CounterData::count_offset()) + 2894 data->size_in_bytes())) { 2895 // The offset is large so bias the mdo by the base of the slot so 2896 // that the ld can use simm13s to reference the slots of the data 2897 mdo_offset_bias = md->byte_offset_of_slot(data, CounterData::count_offset()); 2898 __ set(mdo_offset_bias, O7); 2899 __ add(mdo, O7, mdo); 2900 } 2901 2902 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset()) - mdo_offset_bias); 2903 Bytecodes::Code bc = method->java_code_at_bci(bci); 2904 // Perform additional virtual call profiling for invokevirtual and 2905 // invokeinterface bytecodes 2906 if ((bc == Bytecodes::_invokevirtual || bc == Bytecodes::_invokeinterface) && 2907 C1ProfileVirtualCalls) { 2908 assert(op->recv()->is_single_cpu(), "recv must be allocated"); 2909 Register recv = op->recv()->as_register(); 2910 assert_different_registers(mdo, tmp1, recv); 2911 assert(data->is_VirtualCallData(), "need VirtualCallData for virtual calls"); 2912 ciKlass* known_klass = op->known_holder(); 2913 if (C1OptimizeVirtualCallProfiling && known_klass != NULL) { 2914 // We know the type that will be seen at this call site; we can 2915 // statically update the methodDataOop rather than needing to do 2916 // dynamic tests on the receiver type 2917 2918 // NOTE: we should probably put a lock around this search to 2919 // avoid collisions by concurrent compilations 2920 ciVirtualCallData* vc_data = (ciVirtualCallData*) data; 2921 uint i; 2922 for (i = 0; i < VirtualCallData::row_limit(); i++) { 2923 ciKlass* receiver = vc_data->receiver(i); 2924 if (known_klass->equals(receiver)) { 2925 Address data_addr(mdo, md->byte_offset_of_slot(data, 2926 VirtualCallData::receiver_count_offset(i)) - 2927 mdo_offset_bias); 2928 __ ld_ptr(data_addr, tmp1); 2929 __ add(tmp1, DataLayout::counter_increment, tmp1); 2930 __ st_ptr(tmp1, data_addr); 2931 return; 2932 } 2933 } 2934 2935 // Receiver type not found in profile data; select an empty slot 2936 2937 // Note that this is less efficient than it should be because it 2938 // always does a write to the receiver part of the 2939 // VirtualCallData rather than just the first time 2940 for (i = 0; i < VirtualCallData::row_limit(); i++) { 2941 ciKlass* receiver = vc_data->receiver(i); 2942 if (receiver == NULL) { 2943 Address recv_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_offset(i)) - 2944 mdo_offset_bias); 2945 jobject2reg(known_klass->constant_encoding(), tmp1); 2946 __ st_ptr(tmp1, recv_addr); 2947 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i)) - 2948 mdo_offset_bias); 2949 __ ld_ptr(data_addr, tmp1); 2950 __ add(tmp1, DataLayout::counter_increment, tmp1); 2951 __ st_ptr(tmp1, data_addr); 2952 return; 2953 } 2954 } 2955 } else { 2956 load(Address(recv, oopDesc::klass_offset_in_bytes()), recv, T_OBJECT); 2957 Label update_done; 2958 type_profile_helper(mdo, mdo_offset_bias, md, data, recv, tmp1, &update_done); 2959 // Receiver did not match any saved receiver and there is no empty row for it. 2960 // Increment total counter to indicate polymorphic case. 2961 __ ld_ptr(counter_addr, tmp1); 2962 __ add(tmp1, DataLayout::counter_increment, tmp1); 2963 __ st_ptr(tmp1, counter_addr); 2964 2965 __ bind(update_done); 2966 } 2967 } else { 2968 // Static call 2969 __ ld_ptr(counter_addr, tmp1); 2970 __ add(tmp1, DataLayout::counter_increment, tmp1); 2971 __ st_ptr(tmp1, counter_addr); 2972 } 2973 } 2974 2975 void LIR_Assembler::align_backward_branch_target() { 2976 __ align(OptoLoopAlignment); 2977 } 2978 2979 2980 void LIR_Assembler::emit_delay(LIR_OpDelay* op) { 2981 // make sure we are expecting a delay 2982 // this has the side effect of clearing the delay state 2983 // so we can use _masm instead of _masm->delayed() to do the 2984 // code generation. 2985 __ delayed(); 2986 2987 // make sure we only emit one instruction 2988 int offset = code_offset(); 2989 op->delay_op()->emit_code(this); 2990 #ifdef ASSERT 2991 if (code_offset() - offset != NativeInstruction::nop_instruction_size) { 2992 op->delay_op()->print(); 2993 } 2994 assert(code_offset() - offset == NativeInstruction::nop_instruction_size, 2995 "only one instruction can go in a delay slot"); 2996 #endif 2997 2998 // we may also be emitting the call info for the instruction 2999 // which we are the delay slot of. 3000 CodeEmitInfo* call_info = op->call_info(); 3001 if (call_info) { 3002 add_call_info(code_offset(), call_info); 3003 } 3004 3005 if (VerifyStackAtCalls) { 3006 _masm->sub(FP, SP, O7); 3007 _masm->cmp(O7, initial_frame_size_in_bytes()); 3008 _masm->trap(Assembler::notEqual, Assembler::ptr_cc, G0, ST_RESERVED_FOR_USER_0+2 ); 3009 } 3010 } 3011 3012 3013 void LIR_Assembler::negate(LIR_Opr left, LIR_Opr dest) { 3014 assert(left->is_register(), "can only handle registers"); 3015 3016 if (left->is_single_cpu()) { 3017 __ neg(left->as_register(), dest->as_register()); 3018 } else if (left->is_single_fpu()) { 3019 __ fneg(FloatRegisterImpl::S, left->as_float_reg(), dest->as_float_reg()); 3020 } else if (left->is_double_fpu()) { 3021 __ fneg(FloatRegisterImpl::D, left->as_double_reg(), dest->as_double_reg()); 3022 } else { 3023 assert (left->is_double_cpu(), "Must be a long"); 3024 Register Rlow = left->as_register_lo(); 3025 Register Rhi = left->as_register_hi(); 3026 #ifdef _LP64 3027 __ sub(G0, Rlow, dest->as_register_lo()); 3028 #else 3029 __ subcc(G0, Rlow, dest->as_register_lo()); 3030 __ subc (G0, Rhi, dest->as_register_hi()); 3031 #endif 3032 } 3033 } 3034 3035 3036 void LIR_Assembler::fxch(int i) { 3037 Unimplemented(); 3038 } 3039 3040 void LIR_Assembler::fld(int i) { 3041 Unimplemented(); 3042 } 3043 3044 void LIR_Assembler::ffree(int i) { 3045 Unimplemented(); 3046 } 3047 3048 void LIR_Assembler::rt_call(LIR_Opr result, address dest, 3049 const LIR_OprList* args, LIR_Opr tmp, CodeEmitInfo* info) { 3050 3051 // if tmp is invalid, then the function being called doesn't destroy the thread 3052 if (tmp->is_valid()) { 3053 __ save_thread(tmp->as_register()); 3054 } 3055 __ call(dest, relocInfo::runtime_call_type); 3056 __ delayed()->nop(); 3057 if (info != NULL) { 3058 add_call_info_here(info); 3059 } 3060 if (tmp->is_valid()) { 3061 __ restore_thread(tmp->as_register()); 3062 } 3063 3064 #ifdef ASSERT 3065 __ verify_thread(); 3066 #endif // ASSERT 3067 } 3068 3069 3070 void LIR_Assembler::volatile_move_op(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info) { 3071 #ifdef _LP64 3072 ShouldNotReachHere(); 3073 #endif 3074 3075 NEEDS_CLEANUP; 3076 if (type == T_LONG) { 3077 LIR_Address* mem_addr = dest->is_address() ? dest->as_address_ptr() : src->as_address_ptr(); 3078 3079 // (extended to allow indexed as well as constant displaced for JSR-166) 3080 Register idx = noreg; // contains either constant offset or index 3081 3082 int disp = mem_addr->disp(); 3083 if (mem_addr->index() == LIR_OprFact::illegalOpr) { 3084 if (!Assembler::is_simm13(disp)) { 3085 idx = O7; 3086 __ set(disp, idx); 3087 } 3088 } else { 3089 assert(disp == 0, "not both indexed and disp"); 3090 idx = mem_addr->index()->as_register(); 3091 } 3092 3093 int null_check_offset = -1; 3094 3095 Register base = mem_addr->base()->as_register(); 3096 if (src->is_register() && dest->is_address()) { 3097 // G4 is high half, G5 is low half 3098 if (VM_Version::v9_instructions_work()) { 3099 // clear the top bits of G5, and scale up G4 3100 __ srl (src->as_register_lo(), 0, G5); 3101 __ sllx(src->as_register_hi(), 32, G4); 3102 // combine the two halves into the 64 bits of G4 3103 __ or3(G4, G5, G4); 3104 null_check_offset = __ offset(); 3105 if (idx == noreg) { 3106 __ stx(G4, base, disp); 3107 } else { 3108 __ stx(G4, base, idx); 3109 } 3110 } else { 3111 __ mov (src->as_register_hi(), G4); 3112 __ mov (src->as_register_lo(), G5); 3113 null_check_offset = __ offset(); 3114 if (idx == noreg) { 3115 __ std(G4, base, disp); 3116 } else { 3117 __ std(G4, base, idx); 3118 } 3119 } 3120 } else if (src->is_address() && dest->is_register()) { 3121 null_check_offset = __ offset(); 3122 if (VM_Version::v9_instructions_work()) { 3123 if (idx == noreg) { 3124 __ ldx(base, disp, G5); 3125 } else { 3126 __ ldx(base, idx, G5); 3127 } 3128 __ srax(G5, 32, dest->as_register_hi()); // fetch the high half into hi 3129 __ mov (G5, dest->as_register_lo()); // copy low half into lo 3130 } else { 3131 if (idx == noreg) { 3132 __ ldd(base, disp, G4); 3133 } else { 3134 __ ldd(base, idx, G4); 3135 } 3136 // G4 is high half, G5 is low half 3137 __ mov (G4, dest->as_register_hi()); 3138 __ mov (G5, dest->as_register_lo()); 3139 } 3140 } else { 3141 Unimplemented(); 3142 } 3143 if (info != NULL) { 3144 add_debug_info_for_null_check(null_check_offset, info); 3145 } 3146 3147 } else { 3148 // use normal move for all other volatiles since they don't need 3149 // special handling to remain atomic. 3150 move_op(src, dest, type, lir_patch_none, info, false, false); 3151 } 3152 } 3153 3154 void LIR_Assembler::membar() { 3155 // only StoreLoad membars are ever explicitly needed on sparcs in TSO mode 3156 __ membar( Assembler::Membar_mask_bits(Assembler::StoreLoad) ); 3157 } 3158 3159 void LIR_Assembler::membar_acquire() { 3160 // no-op on TSO 3161 } 3162 3163 void LIR_Assembler::membar_release() { 3164 // no-op on TSO 3165 } 3166 3167 // Pack two sequential registers containing 32 bit values 3168 // into a single 64 bit register. 3169 // src and src->successor() are packed into dst 3170 // src and dst may be the same register. 3171 // Note: src is destroyed 3172 void LIR_Assembler::pack64(LIR_Opr src, LIR_Opr dst) { 3173 Register rs = src->as_register(); 3174 Register rd = dst->as_register_lo(); 3175 __ sllx(rs, 32, rs); 3176 __ srl(rs->successor(), 0, rs->successor()); 3177 __ or3(rs, rs->successor(), rd); 3178 } 3179 3180 // Unpack a 64 bit value in a register into 3181 // two sequential registers. 3182 // src is unpacked into dst and dst->successor() 3183 void LIR_Assembler::unpack64(LIR_Opr src, LIR_Opr dst) { 3184 Register rs = src->as_register_lo(); 3185 Register rd = dst->as_register_hi(); 3186 assert_different_registers(rs, rd, rd->successor()); 3187 __ srlx(rs, 32, rd); 3188 __ srl (rs, 0, rd->successor()); 3189 } 3190 3191 3192 void LIR_Assembler::leal(LIR_Opr addr_opr, LIR_Opr dest) { 3193 LIR_Address* addr = addr_opr->as_address_ptr(); 3194 assert(addr->index()->is_illegal() && addr->scale() == LIR_Address::times_1 && Assembler::is_simm13(addr->disp()), "can't handle complex addresses yet"); 3195 3196 __ add(addr->base()->as_pointer_register(), addr->disp(), dest->as_pointer_register()); 3197 } 3198 3199 3200 void LIR_Assembler::get_thread(LIR_Opr result_reg) { 3201 assert(result_reg->is_register(), "check"); 3202 __ mov(G2_thread, result_reg->as_register()); 3203 } 3204 3205 3206 void LIR_Assembler::peephole(LIR_List* lir) { 3207 LIR_OpList* inst = lir->instructions_list(); 3208 for (int i = 0; i < inst->length(); i++) { 3209 LIR_Op* op = inst->at(i); 3210 switch (op->code()) { 3211 case lir_cond_float_branch: 3212 case lir_branch: { 3213 LIR_OpBranch* branch = op->as_OpBranch(); 3214 assert(branch->info() == NULL, "shouldn't be state on branches anymore"); 3215 LIR_Op* delay_op = NULL; 3216 // we'd like to be able to pull following instructions into 3217 // this slot but we don't know enough to do it safely yet so 3218 // only optimize block to block control flow. 3219 if (LIRFillDelaySlots && branch->block()) { 3220 LIR_Op* prev = inst->at(i - 1); 3221 if (prev && LIR_Assembler::is_single_instruction(prev) && prev->info() == NULL) { 3222 // swap previous instruction into delay slot 3223 inst->at_put(i - 1, op); 3224 inst->at_put(i, new LIR_OpDelay(prev, op->info())); 3225 #ifndef PRODUCT 3226 if (LIRTracePeephole) { 3227 tty->print_cr("delayed"); 3228 inst->at(i - 1)->print(); 3229 inst->at(i)->print(); 3230 tty->cr(); 3231 } 3232 #endif 3233 continue; 3234 } 3235 } 3236 3237 if (!delay_op) { 3238 delay_op = new LIR_OpDelay(new LIR_Op0(lir_nop), NULL); 3239 } 3240 inst->insert_before(i + 1, delay_op); 3241 break; 3242 } 3243 case lir_static_call: 3244 case lir_virtual_call: 3245 case lir_icvirtual_call: 3246 case lir_optvirtual_call: 3247 case lir_dynamic_call: { 3248 LIR_Op* prev = inst->at(i - 1); 3249 if (LIRFillDelaySlots && prev && prev->code() == lir_move && prev->info() == NULL && 3250 (op->code() != lir_virtual_call || 3251 !prev->result_opr()->is_single_cpu() || 3252 prev->result_opr()->as_register() != O0) && 3253 LIR_Assembler::is_single_instruction(prev)) { 3254 // Only moves without info can be put into the delay slot. 3255 // Also don't allow the setup of the receiver in the delay 3256 // slot for vtable calls. 3257 inst->at_put(i - 1, op); 3258 inst->at_put(i, new LIR_OpDelay(prev, op->info())); 3259 #ifndef PRODUCT 3260 if (LIRTracePeephole) { 3261 tty->print_cr("delayed"); 3262 inst->at(i - 1)->print(); 3263 inst->at(i)->print(); 3264 tty->cr(); 3265 } 3266 #endif 3267 } else { 3268 LIR_Op* delay_op = new LIR_OpDelay(new LIR_Op0(lir_nop), op->as_OpJavaCall()->info()); 3269 inst->insert_before(i + 1, delay_op); 3270 i++; 3271 } 3272 3273 #if defined(TIERED) && !defined(_LP64) 3274 // fixup the return value from G1 to O0/O1 for long returns. 3275 // It's done here instead of in LIRGenerator because there's 3276 // such a mismatch between the single reg and double reg 3277 // calling convention. 3278 LIR_OpJavaCall* callop = op->as_OpJavaCall(); 3279 if (callop->result_opr() == FrameMap::out_long_opr) { 3280 LIR_OpJavaCall* call; 3281 LIR_OprList* arguments = new LIR_OprList(callop->arguments()->length()); 3282 for (int a = 0; a < arguments->length(); a++) { 3283 arguments[a] = callop->arguments()[a]; 3284 } 3285 if (op->code() == lir_virtual_call) { 3286 call = new LIR_OpJavaCall(op->code(), callop->method(), callop->receiver(), FrameMap::g1_long_single_opr, 3287 callop->vtable_offset(), arguments, callop->info()); 3288 } else { 3289 call = new LIR_OpJavaCall(op->code(), callop->method(), callop->receiver(), FrameMap::g1_long_single_opr, 3290 callop->addr(), arguments, callop->info()); 3291 } 3292 inst->at_put(i - 1, call); 3293 inst->insert_before(i + 1, new LIR_Op1(lir_unpack64, FrameMap::g1_long_single_opr, callop->result_opr(), 3294 T_LONG, lir_patch_none, NULL)); 3295 } 3296 #endif 3297 break; 3298 } 3299 } 3300 } 3301 } 3302 3303 3304 3305 3306 #undef __