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 "precompiled.hpp" 26 #include "c1/c1_Compilation.hpp" 27 #include "c1/c1_LIRAssembler.hpp" 28 #include "c1/c1_MacroAssembler.hpp" 29 #include "c1/c1_Runtime1.hpp" 30 #include "c1/c1_ValueStack.hpp" 31 #include "ci/ciArrayKlass.hpp" 32 #include "ci/ciInstance.hpp" 33 #include "gc_interface/collectedHeap.hpp" 34 #include "memory/barrierSet.hpp" 35 #include "memory/cardTableModRefBS.hpp" 36 #include "nativeInst_x86.hpp" 37 #include "oops/objArrayKlass.hpp" 38 #include "runtime/sharedRuntime.hpp" 39 40 41 // These masks are used to provide 128-bit aligned bitmasks to the XMM 42 // instructions, to allow sign-masking or sign-bit flipping. They allow 43 // fast versions of NegF/NegD and AbsF/AbsD. 44 45 // Note: 'double' and 'long long' have 32-bits alignment on x86. 46 static jlong* double_quadword(jlong *adr, jlong lo, jlong hi) { 47 // Use the expression (adr)&(~0xF) to provide 128-bits aligned address 48 // of 128-bits operands for SSE instructions. 49 jlong *operand = (jlong*)(((long)adr)&((long)(~0xF))); 50 // Store the value to a 128-bits operand. 51 operand[0] = lo; 52 operand[1] = hi; 53 return operand; 54 } 55 56 // Buffer for 128-bits masks used by SSE instructions. 57 static jlong fp_signmask_pool[(4+1)*2]; // 4*128bits(data) + 128bits(alignment) 58 59 // Static initialization during VM startup. 60 static jlong *float_signmask_pool = double_quadword(&fp_signmask_pool[1*2], CONST64(0x7FFFFFFF7FFFFFFF), CONST64(0x7FFFFFFF7FFFFFFF)); 61 static jlong *double_signmask_pool = double_quadword(&fp_signmask_pool[2*2], CONST64(0x7FFFFFFFFFFFFFFF), CONST64(0x7FFFFFFFFFFFFFFF)); 62 static jlong *float_signflip_pool = double_quadword(&fp_signmask_pool[3*2], CONST64(0x8000000080000000), CONST64(0x8000000080000000)); 63 static jlong *double_signflip_pool = double_quadword(&fp_signmask_pool[4*2], CONST64(0x8000000000000000), CONST64(0x8000000000000000)); 64 65 66 67 NEEDS_CLEANUP // remove this definitions ? 68 const Register IC_Klass = rax; // where the IC klass is cached 69 const Register SYNC_header = rax; // synchronization header 70 const Register SHIFT_count = rcx; // where count for shift operations must be 71 72 #define __ _masm-> 73 74 75 static void select_different_registers(Register preserve, 76 Register extra, 77 Register &tmp1, 78 Register &tmp2) { 79 if (tmp1 == preserve) { 80 assert_different_registers(tmp1, tmp2, extra); 81 tmp1 = extra; 82 } else if (tmp2 == preserve) { 83 assert_different_registers(tmp1, tmp2, extra); 84 tmp2 = extra; 85 } 86 assert_different_registers(preserve, tmp1, tmp2); 87 } 88 89 90 91 static void select_different_registers(Register preserve, 92 Register extra, 93 Register &tmp1, 94 Register &tmp2, 95 Register &tmp3) { 96 if (tmp1 == preserve) { 97 assert_different_registers(tmp1, tmp2, tmp3, extra); 98 tmp1 = extra; 99 } else if (tmp2 == preserve) { 100 assert_different_registers(tmp1, tmp2, tmp3, extra); 101 tmp2 = extra; 102 } else if (tmp3 == preserve) { 103 assert_different_registers(tmp1, tmp2, tmp3, extra); 104 tmp3 = extra; 105 } 106 assert_different_registers(preserve, tmp1, tmp2, tmp3); 107 } 108 109 110 111 bool LIR_Assembler::is_small_constant(LIR_Opr opr) { 112 if (opr->is_constant()) { 113 LIR_Const* constant = opr->as_constant_ptr(); 114 switch (constant->type()) { 115 case T_INT: { 116 return true; 117 } 118 119 default: 120 return false; 121 } 122 } 123 return false; 124 } 125 126 127 LIR_Opr LIR_Assembler::receiverOpr() { 128 return FrameMap::receiver_opr; 129 } 130 131 LIR_Opr LIR_Assembler::incomingReceiverOpr() { 132 return receiverOpr(); 133 } 134 135 LIR_Opr LIR_Assembler::osrBufferPointer() { 136 return FrameMap::as_pointer_opr(receiverOpr()->as_register()); 137 } 138 139 //--------------fpu register translations----------------------- 140 141 142 address LIR_Assembler::float_constant(float f) { 143 address const_addr = __ float_constant(f); 144 if (const_addr == NULL) { 145 bailout("const section overflow"); 146 return __ code()->consts()->start(); 147 } else { 148 return const_addr; 149 } 150 } 151 152 153 address LIR_Assembler::double_constant(double d) { 154 address const_addr = __ double_constant(d); 155 if (const_addr == NULL) { 156 bailout("const section overflow"); 157 return __ code()->consts()->start(); 158 } else { 159 return const_addr; 160 } 161 } 162 163 164 void LIR_Assembler::set_24bit_FPU() { 165 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_24())); 166 } 167 168 void LIR_Assembler::reset_FPU() { 169 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); 170 } 171 172 void LIR_Assembler::fpop() { 173 __ fpop(); 174 } 175 176 void LIR_Assembler::fxch(int i) { 177 __ fxch(i); 178 } 179 180 void LIR_Assembler::fld(int i) { 181 __ fld_s(i); 182 } 183 184 void LIR_Assembler::ffree(int i) { 185 __ ffree(i); 186 } 187 188 void LIR_Assembler::breakpoint() { 189 __ int3(); 190 } 191 192 void LIR_Assembler::push(LIR_Opr opr) { 193 if (opr->is_single_cpu()) { 194 __ push_reg(opr->as_register()); 195 } else if (opr->is_double_cpu()) { 196 NOT_LP64(__ push_reg(opr->as_register_hi())); 197 __ push_reg(opr->as_register_lo()); 198 } else if (opr->is_stack()) { 199 __ push_addr(frame_map()->address_for_slot(opr->single_stack_ix())); 200 } else if (opr->is_constant()) { 201 LIR_Const* const_opr = opr->as_constant_ptr(); 202 if (const_opr->type() == T_OBJECT) { 203 __ push_oop(const_opr->as_jobject()); 204 } else if (const_opr->type() == T_INT) { 205 __ push_jint(const_opr->as_jint()); 206 } else { 207 ShouldNotReachHere(); 208 } 209 210 } else { 211 ShouldNotReachHere(); 212 } 213 } 214 215 void LIR_Assembler::pop(LIR_Opr opr) { 216 if (opr->is_single_cpu()) { 217 __ pop_reg(opr->as_register()); 218 } else { 219 ShouldNotReachHere(); 220 } 221 } 222 223 bool LIR_Assembler::is_literal_address(LIR_Address* addr) { 224 return addr->base()->is_illegal() && addr->index()->is_illegal(); 225 } 226 227 //------------------------------------------- 228 229 Address LIR_Assembler::as_Address(LIR_Address* addr) { 230 return as_Address(addr, rscratch1); 231 } 232 233 Address LIR_Assembler::as_Address(LIR_Address* addr, Register tmp) { 234 if (addr->base()->is_illegal()) { 235 assert(addr->index()->is_illegal(), "must be illegal too"); 236 AddressLiteral laddr((address)addr->disp(), relocInfo::none); 237 if (! __ reachable(laddr)) { 238 __ movptr(tmp, laddr.addr()); 239 Address res(tmp, 0); 240 return res; 241 } else { 242 return __ as_Address(laddr); 243 } 244 } 245 246 Register base = addr->base()->as_pointer_register(); 247 248 if (addr->index()->is_illegal()) { 249 return Address( base, addr->disp()); 250 } else if (addr->index()->is_cpu_register()) { 251 Register index = addr->index()->as_pointer_register(); 252 return Address(base, index, (Address::ScaleFactor) addr->scale(), addr->disp()); 253 } else if (addr->index()->is_constant()) { 254 intptr_t addr_offset = (addr->index()->as_constant_ptr()->as_jint() << addr->scale()) + addr->disp(); 255 assert(Assembler::is_simm32(addr_offset), "must be"); 256 257 return Address(base, addr_offset); 258 } else { 259 Unimplemented(); 260 return Address(); 261 } 262 } 263 264 265 Address LIR_Assembler::as_Address_hi(LIR_Address* addr) { 266 Address base = as_Address(addr); 267 return Address(base._base, base._index, base._scale, base._disp + BytesPerWord); 268 } 269 270 271 Address LIR_Assembler::as_Address_lo(LIR_Address* addr) { 272 return as_Address(addr); 273 } 274 275 276 void LIR_Assembler::osr_entry() { 277 offsets()->set_value(CodeOffsets::OSR_Entry, code_offset()); 278 BlockBegin* osr_entry = compilation()->hir()->osr_entry(); 279 ValueStack* entry_state = osr_entry->state(); 280 int number_of_locks = entry_state->locks_size(); 281 282 // we jump here if osr happens with the interpreter 283 // state set up to continue at the beginning of the 284 // loop that triggered osr - in particular, we have 285 // the following registers setup: 286 // 287 // rcx: osr buffer 288 // 289 290 // build frame 291 ciMethod* m = compilation()->method(); 292 __ build_frame(initial_frame_size_in_bytes()); 293 294 // OSR buffer is 295 // 296 // locals[nlocals-1..0] 297 // monitors[0..number_of_locks] 298 // 299 // locals is a direct copy of the interpreter frame so in the osr buffer 300 // so first slot in the local array is the last local from the interpreter 301 // and last slot is local[0] (receiver) from the interpreter 302 // 303 // Similarly with locks. The first lock slot in the osr buffer is the nth lock 304 // from the interpreter frame, the nth lock slot in the osr buffer is 0th lock 305 // in the interpreter frame (the method lock if a sync method) 306 307 // Initialize monitors in the compiled activation. 308 // rcx: pointer to osr buffer 309 // 310 // All other registers are dead at this point and the locals will be 311 // copied into place by code emitted in the IR. 312 313 Register OSR_buf = osrBufferPointer()->as_pointer_register(); 314 { assert(frame::interpreter_frame_monitor_size() == BasicObjectLock::size(), "adjust code below"); 315 int monitor_offset = BytesPerWord * method()->max_locals() + 316 (2 * BytesPerWord) * (number_of_locks - 1); 317 // SharedRuntime::OSR_migration_begin() packs BasicObjectLocks in 318 // the OSR buffer using 2 word entries: first the lock and then 319 // the oop. 320 for (int i = 0; i < number_of_locks; i++) { 321 int slot_offset = monitor_offset - ((i * 2) * BytesPerWord); 322 #ifdef ASSERT 323 // verify the interpreter's monitor has a non-null object 324 { 325 Label L; 326 __ cmpptr(Address(OSR_buf, slot_offset + 1*BytesPerWord), (int32_t)NULL_WORD); 327 __ jcc(Assembler::notZero, L); 328 __ stop("locked object is NULL"); 329 __ bind(L); 330 } 331 #endif 332 __ movptr(rbx, Address(OSR_buf, slot_offset + 0)); 333 __ movptr(frame_map()->address_for_monitor_lock(i), rbx); 334 __ movptr(rbx, Address(OSR_buf, slot_offset + 1*BytesPerWord)); 335 __ movptr(frame_map()->address_for_monitor_object(i), rbx); 336 } 337 } 338 } 339 340 341 // inline cache check; done before the frame is built. 342 int LIR_Assembler::check_icache() { 343 Register receiver = FrameMap::receiver_opr->as_register(); 344 Register ic_klass = IC_Klass; 345 const int ic_cmp_size = LP64_ONLY(10) NOT_LP64(9); 346 const bool do_post_padding = VerifyOops || UseCompressedOops; 347 if (!do_post_padding) { 348 // insert some nops so that the verified entry point is aligned on CodeEntryAlignment 349 while ((__ offset() + ic_cmp_size) % CodeEntryAlignment != 0) { 350 __ nop(); 351 } 352 } 353 int offset = __ offset(); 354 __ inline_cache_check(receiver, IC_Klass); 355 assert(__ offset() % CodeEntryAlignment == 0 || do_post_padding, "alignment must be correct"); 356 if (do_post_padding) { 357 // force alignment after the cache check. 358 // It's been verified to be aligned if !VerifyOops 359 __ align(CodeEntryAlignment); 360 } 361 return offset; 362 } 363 364 365 void LIR_Assembler::jobject2reg_with_patching(Register reg, CodeEmitInfo* info) { 366 jobject o = NULL; 367 PatchingStub* patch = new PatchingStub(_masm, PatchingStub::load_klass_id); 368 __ movoop(reg, o); 369 patching_epilog(patch, lir_patch_normal, reg, info); 370 } 371 372 373 void LIR_Assembler::monitorexit(LIR_Opr obj_opr, LIR_Opr lock_opr, Register new_hdr, int monitor_no, Register exception) { 374 if (exception->is_valid()) { 375 // preserve exception 376 // note: the monitor_exit runtime call is a leaf routine 377 // and cannot block => no GC can happen 378 // The slow case (MonitorAccessStub) uses the first two stack slots 379 // ([esp+0] and [esp+4]), therefore we store the exception at [esp+8] 380 __ movptr (Address(rsp, 2*wordSize), exception); 381 } 382 383 Register obj_reg = obj_opr->as_register(); 384 Register lock_reg = lock_opr->as_register(); 385 386 // setup registers (lock_reg must be rax, for lock_object) 387 assert(obj_reg != SYNC_header && lock_reg != SYNC_header, "rax, must be available here"); 388 Register hdr = lock_reg; 389 assert(new_hdr == SYNC_header, "wrong register"); 390 lock_reg = new_hdr; 391 // compute pointer to BasicLock 392 Address lock_addr = frame_map()->address_for_monitor_lock(monitor_no); 393 __ lea(lock_reg, lock_addr); 394 // unlock object 395 MonitorAccessStub* slow_case = new MonitorExitStub(lock_opr, true, monitor_no); 396 // _slow_case_stubs->append(slow_case); 397 // temporary fix: must be created after exceptionhandler, therefore as call stub 398 _slow_case_stubs->append(slow_case); 399 if (UseFastLocking) { 400 // try inlined fast unlocking first, revert to slow locking if it fails 401 // note: lock_reg points to the displaced header since the displaced header offset is 0! 402 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); 403 __ unlock_object(hdr, obj_reg, lock_reg, *slow_case->entry()); 404 } else { 405 // always do slow unlocking 406 // note: the slow unlocking code could be inlined here, however if we use 407 // slow unlocking, speed doesn't matter anyway and this solution is 408 // simpler and requires less duplicated code - additionally, the 409 // slow unlocking code is the same in either case which simplifies 410 // debugging 411 __ jmp(*slow_case->entry()); 412 } 413 // done 414 __ bind(*slow_case->continuation()); 415 416 if (exception->is_valid()) { 417 // restore exception 418 __ movptr (exception, Address(rsp, 2 * wordSize)); 419 } 420 } 421 422 // This specifies the rsp decrement needed to build the frame 423 int LIR_Assembler::initial_frame_size_in_bytes() { 424 // if rounding, must let FrameMap know! 425 426 // The frame_map records size in slots (32bit word) 427 428 // subtract two words to account for return address and link 429 return (frame_map()->framesize() - (2*VMRegImpl::slots_per_word)) * VMRegImpl::stack_slot_size; 430 } 431 432 433 int LIR_Assembler::emit_exception_handler() { 434 // if the last instruction is a call (typically to do a throw which 435 // is coming at the end after block reordering) the return address 436 // must still point into the code area in order to avoid assertion 437 // failures when searching for the corresponding bci => add a nop 438 // (was bug 5/14/1999 - gri) 439 __ nop(); 440 441 // generate code for exception handler 442 address handler_base = __ start_a_stub(exception_handler_size); 443 if (handler_base == NULL) { 444 // not enough space left for the handler 445 bailout("exception handler overflow"); 446 return -1; 447 } 448 449 int offset = code_offset(); 450 451 // the exception oop and pc are in rax, and rdx 452 // no other registers need to be preserved, so invalidate them 453 __ invalidate_registers(false, true, true, false, true, true); 454 455 // check that there is really an exception 456 __ verify_not_null_oop(rax); 457 458 // search an exception handler (rax: exception oop, rdx: throwing pc) 459 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::handle_exception_nofpu_id))); 460 461 __ stop("should not reach here"); 462 463 assert(code_offset() - offset <= exception_handler_size, "overflow"); 464 __ end_a_stub(); 465 466 return offset; 467 } 468 469 470 // Emit the code to remove the frame from the stack in the exception 471 // unwind path. 472 int LIR_Assembler::emit_unwind_handler() { 473 #ifndef PRODUCT 474 if (CommentedAssembly) { 475 _masm->block_comment("Unwind handler"); 476 } 477 #endif 478 479 int offset = code_offset(); 480 481 // Fetch the exception from TLS and clear out exception related thread state 482 __ get_thread(rsi); 483 __ movptr(rax, Address(rsi, JavaThread::exception_oop_offset())); 484 __ movptr(Address(rsi, JavaThread::exception_oop_offset()), (int32_t)NULL_WORD); 485 __ movptr(Address(rsi, JavaThread::exception_pc_offset()), (int32_t)NULL_WORD); 486 487 __ bind(_unwind_handler_entry); 488 __ verify_not_null_oop(rax); 489 if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) { 490 __ mov(rsi, rax); // Preserve the exception 491 } 492 493 // Preform needed unlocking 494 MonitorExitStub* stub = NULL; 495 if (method()->is_synchronized()) { 496 monitor_address(0, FrameMap::rax_opr); 497 stub = new MonitorExitStub(FrameMap::rax_opr, true, 0); 498 __ unlock_object(rdi, rbx, rax, *stub->entry()); 499 __ bind(*stub->continuation()); 500 } 501 502 if (compilation()->env()->dtrace_method_probes()) { 503 __ get_thread(rax); 504 __ movptr(Address(rsp, 0), rax); 505 __ movoop(Address(rsp, sizeof(void*)), method()->constant_encoding()); 506 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit))); 507 } 508 509 if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) { 510 __ mov(rax, rsi); // Restore the exception 511 } 512 513 // remove the activation and dispatch to the unwind handler 514 __ remove_frame(initial_frame_size_in_bytes()); 515 __ jump(RuntimeAddress(Runtime1::entry_for(Runtime1::unwind_exception_id))); 516 517 // Emit the slow path assembly 518 if (stub != NULL) { 519 stub->emit_code(this); 520 } 521 522 return offset; 523 } 524 525 526 int LIR_Assembler::emit_deopt_handler() { 527 // if the last instruction is a call (typically to do a throw which 528 // is coming at the end after block reordering) the return address 529 // must still point into the code area in order to avoid assertion 530 // failures when searching for the corresponding bci => add a nop 531 // (was bug 5/14/1999 - gri) 532 __ nop(); 533 534 // generate code for exception handler 535 address handler_base = __ start_a_stub(deopt_handler_size); 536 if (handler_base == NULL) { 537 // not enough space left for the handler 538 bailout("deopt handler overflow"); 539 return -1; 540 } 541 542 int offset = code_offset(); 543 InternalAddress here(__ pc()); 544 545 __ pushptr(here.addr()); 546 __ jump(RuntimeAddress(SharedRuntime::deopt_blob()->unpack())); 547 548 assert(code_offset() - offset <= deopt_handler_size, "overflow"); 549 __ end_a_stub(); 550 551 return offset; 552 } 553 554 555 // This is the fast version of java.lang.String.compare; it has not 556 // OSR-entry and therefore, we generate a slow version for OSR's 557 void LIR_Assembler::emit_string_compare(LIR_Opr arg0, LIR_Opr arg1, LIR_Opr dst, CodeEmitInfo* info) { 558 __ movptr (rbx, rcx); // receiver is in rcx 559 __ movptr (rax, arg1->as_register()); 560 561 // Get addresses of first characters from both Strings 562 __ load_heap_oop(rsi, Address(rax, java_lang_String::value_offset_in_bytes())); 563 __ movptr (rcx, Address(rax, java_lang_String::offset_offset_in_bytes())); 564 __ lea (rsi, Address(rsi, rcx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); 565 566 567 // rbx, may be NULL 568 add_debug_info_for_null_check_here(info); 569 __ load_heap_oop(rdi, Address(rbx, java_lang_String::value_offset_in_bytes())); 570 __ movptr (rcx, Address(rbx, java_lang_String::offset_offset_in_bytes())); 571 __ lea (rdi, Address(rdi, rcx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); 572 573 // compute minimum length (in rax) and difference of lengths (on top of stack) 574 if (VM_Version::supports_cmov()) { 575 __ movl (rbx, Address(rbx, java_lang_String::count_offset_in_bytes())); 576 __ movl (rax, Address(rax, java_lang_String::count_offset_in_bytes())); 577 __ mov (rcx, rbx); 578 __ subptr (rbx, rax); // subtract lengths 579 __ push (rbx); // result 580 __ cmov (Assembler::lessEqual, rax, rcx); 581 } else { 582 Label L; 583 __ movl (rbx, Address(rbx, java_lang_String::count_offset_in_bytes())); 584 __ movl (rcx, Address(rax, java_lang_String::count_offset_in_bytes())); 585 __ mov (rax, rbx); 586 __ subptr (rbx, rcx); 587 __ push (rbx); 588 __ jcc (Assembler::lessEqual, L); 589 __ mov (rax, rcx); 590 __ bind (L); 591 } 592 // is minimum length 0? 593 Label noLoop, haveResult; 594 __ testptr (rax, rax); 595 __ jcc (Assembler::zero, noLoop); 596 597 // compare first characters 598 __ load_unsigned_short(rcx, Address(rdi, 0)); 599 __ load_unsigned_short(rbx, Address(rsi, 0)); 600 __ subl(rcx, rbx); 601 __ jcc(Assembler::notZero, haveResult); 602 // starting loop 603 __ decrement(rax); // we already tested index: skip one 604 __ jcc(Assembler::zero, noLoop); 605 606 // set rsi.edi to the end of the arrays (arrays have same length) 607 // negate the index 608 609 __ lea(rsi, Address(rsi, rax, Address::times_2, type2aelembytes(T_CHAR))); 610 __ lea(rdi, Address(rdi, rax, Address::times_2, type2aelembytes(T_CHAR))); 611 __ negptr(rax); 612 613 // compare the strings in a loop 614 615 Label loop; 616 __ align(wordSize); 617 __ bind(loop); 618 __ load_unsigned_short(rcx, Address(rdi, rax, Address::times_2, 0)); 619 __ load_unsigned_short(rbx, Address(rsi, rax, Address::times_2, 0)); 620 __ subl(rcx, rbx); 621 __ jcc(Assembler::notZero, haveResult); 622 __ increment(rax); 623 __ jcc(Assembler::notZero, loop); 624 625 // strings are equal up to min length 626 627 __ bind(noLoop); 628 __ pop(rax); 629 return_op(LIR_OprFact::illegalOpr); 630 631 __ bind(haveResult); 632 // leave instruction is going to discard the TOS value 633 __ mov (rax, rcx); // result of call is in rax, 634 } 635 636 637 void LIR_Assembler::return_op(LIR_Opr result) { 638 assert(result->is_illegal() || !result->is_single_cpu() || result->as_register() == rax, "word returns are in rax,"); 639 if (!result->is_illegal() && result->is_float_kind() && !result->is_xmm_register()) { 640 assert(result->fpu() == 0, "result must already be on TOS"); 641 } 642 643 // Pop the stack before the safepoint code 644 __ remove_frame(initial_frame_size_in_bytes()); 645 646 bool result_is_oop = result->is_valid() ? result->is_oop() : false; 647 648 // Note: we do not need to round double result; float result has the right precision 649 // the poll sets the condition code, but no data registers 650 AddressLiteral polling_page(os::get_polling_page() + (SafepointPollOffset % os::vm_page_size()), 651 relocInfo::poll_return_type); 652 653 // NOTE: the requires that the polling page be reachable else the reloc 654 // goes to the movq that loads the address and not the faulting instruction 655 // which breaks the signal handler code 656 657 __ test32(rax, polling_page); 658 659 __ ret(0); 660 } 661 662 663 int LIR_Assembler::safepoint_poll(LIR_Opr tmp, CodeEmitInfo* info) { 664 AddressLiteral polling_page(os::get_polling_page() + (SafepointPollOffset % os::vm_page_size()), 665 relocInfo::poll_type); 666 667 if (info != NULL) { 668 add_debug_info_for_branch(info); 669 } else { 670 ShouldNotReachHere(); 671 } 672 673 int offset = __ offset(); 674 675 // NOTE: the requires that the polling page be reachable else the reloc 676 // goes to the movq that loads the address and not the faulting instruction 677 // which breaks the signal handler code 678 679 __ test32(rax, polling_page); 680 return offset; 681 } 682 683 684 void LIR_Assembler::move_regs(Register from_reg, Register to_reg) { 685 if (from_reg != to_reg) __ mov(to_reg, from_reg); 686 } 687 688 void LIR_Assembler::swap_reg(Register a, Register b) { 689 __ xchgptr(a, b); 690 } 691 692 693 void LIR_Assembler::const2reg(LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_code, CodeEmitInfo* info) { 694 assert(src->is_constant(), "should not call otherwise"); 695 assert(dest->is_register(), "should not call otherwise"); 696 LIR_Const* c = src->as_constant_ptr(); 697 698 switch (c->type()) { 699 case T_INT: { 700 assert(patch_code == lir_patch_none, "no patching handled here"); 701 __ movl(dest->as_register(), c->as_jint()); 702 break; 703 } 704 705 case T_ADDRESS: { 706 assert(patch_code == lir_patch_none, "no patching handled here"); 707 __ movptr(dest->as_register(), c->as_jint()); 708 break; 709 } 710 711 case T_LONG: { 712 assert(patch_code == lir_patch_none, "no patching handled here"); 713 #ifdef _LP64 714 __ movptr(dest->as_register_lo(), (intptr_t)c->as_jlong()); 715 #else 716 __ movptr(dest->as_register_lo(), c->as_jint_lo()); 717 __ movptr(dest->as_register_hi(), c->as_jint_hi()); 718 #endif // _LP64 719 break; 720 } 721 722 case T_OBJECT: { 723 if (patch_code != lir_patch_none) { 724 jobject2reg_with_patching(dest->as_register(), info); 725 } else { 726 __ movoop(dest->as_register(), c->as_jobject()); 727 } 728 break; 729 } 730 731 case T_FLOAT: { 732 if (dest->is_single_xmm()) { 733 if (c->is_zero_float()) { 734 __ xorps(dest->as_xmm_float_reg(), dest->as_xmm_float_reg()); 735 } else { 736 __ movflt(dest->as_xmm_float_reg(), 737 InternalAddress(float_constant(c->as_jfloat()))); 738 } 739 } else { 740 assert(dest->is_single_fpu(), "must be"); 741 assert(dest->fpu_regnr() == 0, "dest must be TOS"); 742 if (c->is_zero_float()) { 743 __ fldz(); 744 } else if (c->is_one_float()) { 745 __ fld1(); 746 } else { 747 __ fld_s (InternalAddress(float_constant(c->as_jfloat()))); 748 } 749 } 750 break; 751 } 752 753 case T_DOUBLE: { 754 if (dest->is_double_xmm()) { 755 if (c->is_zero_double()) { 756 __ xorpd(dest->as_xmm_double_reg(), dest->as_xmm_double_reg()); 757 } else { 758 __ movdbl(dest->as_xmm_double_reg(), 759 InternalAddress(double_constant(c->as_jdouble()))); 760 } 761 } else { 762 assert(dest->is_double_fpu(), "must be"); 763 assert(dest->fpu_regnrLo() == 0, "dest must be TOS"); 764 if (c->is_zero_double()) { 765 __ fldz(); 766 } else if (c->is_one_double()) { 767 __ fld1(); 768 } else { 769 __ fld_d (InternalAddress(double_constant(c->as_jdouble()))); 770 } 771 } 772 break; 773 } 774 775 default: 776 ShouldNotReachHere(); 777 } 778 } 779 780 void LIR_Assembler::const2stack(LIR_Opr src, LIR_Opr dest) { 781 assert(src->is_constant(), "should not call otherwise"); 782 assert(dest->is_stack(), "should not call otherwise"); 783 LIR_Const* c = src->as_constant_ptr(); 784 785 switch (c->type()) { 786 case T_INT: // fall through 787 case T_FLOAT: 788 __ movl(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jint_bits()); 789 break; 790 791 case T_ADDRESS: 792 __ movptr(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jint_bits()); 793 break; 794 795 case T_OBJECT: 796 __ movoop(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jobject()); 797 break; 798 799 case T_LONG: // fall through 800 case T_DOUBLE: 801 #ifdef _LP64 802 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(), 803 lo_word_offset_in_bytes), (intptr_t)c->as_jlong_bits()); 804 #else 805 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(), 806 lo_word_offset_in_bytes), c->as_jint_lo_bits()); 807 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(), 808 hi_word_offset_in_bytes), c->as_jint_hi_bits()); 809 #endif // _LP64 810 break; 811 812 default: 813 ShouldNotReachHere(); 814 } 815 } 816 817 void LIR_Assembler::const2mem(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info, bool wide) { 818 assert(src->is_constant(), "should not call otherwise"); 819 assert(dest->is_address(), "should not call otherwise"); 820 LIR_Const* c = src->as_constant_ptr(); 821 LIR_Address* addr = dest->as_address_ptr(); 822 823 int null_check_here = code_offset(); 824 switch (type) { 825 case T_INT: // fall through 826 case T_FLOAT: 827 __ movl(as_Address(addr), c->as_jint_bits()); 828 break; 829 830 case T_ADDRESS: 831 __ movptr(as_Address(addr), c->as_jint_bits()); 832 break; 833 834 case T_OBJECT: // fall through 835 case T_ARRAY: 836 if (c->as_jobject() == NULL) { 837 if (UseCompressedOops && !wide) { 838 __ movl(as_Address(addr), (int32_t)NULL_WORD); 839 } else { 840 __ movptr(as_Address(addr), NULL_WORD); 841 } 842 } else { 843 if (is_literal_address(addr)) { 844 ShouldNotReachHere(); 845 __ movoop(as_Address(addr, noreg), c->as_jobject()); 846 } else { 847 #ifdef _LP64 848 __ movoop(rscratch1, c->as_jobject()); 849 if (UseCompressedOops && !wide) { 850 __ encode_heap_oop(rscratch1); 851 null_check_here = code_offset(); 852 __ movl(as_Address_lo(addr), rscratch1); 853 } else { 854 null_check_here = code_offset(); 855 __ movptr(as_Address_lo(addr), rscratch1); 856 } 857 #else 858 __ movoop(as_Address(addr), c->as_jobject()); 859 #endif 860 } 861 } 862 break; 863 864 case T_LONG: // fall through 865 case T_DOUBLE: 866 #ifdef _LP64 867 if (is_literal_address(addr)) { 868 ShouldNotReachHere(); 869 __ movptr(as_Address(addr, r15_thread), (intptr_t)c->as_jlong_bits()); 870 } else { 871 __ movptr(r10, (intptr_t)c->as_jlong_bits()); 872 null_check_here = code_offset(); 873 __ movptr(as_Address_lo(addr), r10); 874 } 875 #else 876 // Always reachable in 32bit so this doesn't produce useless move literal 877 __ movptr(as_Address_hi(addr), c->as_jint_hi_bits()); 878 __ movptr(as_Address_lo(addr), c->as_jint_lo_bits()); 879 #endif // _LP64 880 break; 881 882 case T_BOOLEAN: // fall through 883 case T_BYTE: 884 __ movb(as_Address(addr), c->as_jint() & 0xFF); 885 break; 886 887 case T_CHAR: // fall through 888 case T_SHORT: 889 __ movw(as_Address(addr), c->as_jint() & 0xFFFF); 890 break; 891 892 default: 893 ShouldNotReachHere(); 894 }; 895 896 if (info != NULL) { 897 add_debug_info_for_null_check(null_check_here, info); 898 } 899 } 900 901 902 void LIR_Assembler::reg2reg(LIR_Opr src, LIR_Opr dest) { 903 assert(src->is_register(), "should not call otherwise"); 904 assert(dest->is_register(), "should not call otherwise"); 905 906 // move between cpu-registers 907 if (dest->is_single_cpu()) { 908 #ifdef _LP64 909 if (src->type() == T_LONG) { 910 // Can do LONG -> OBJECT 911 move_regs(src->as_register_lo(), dest->as_register()); 912 return; 913 } 914 #endif 915 assert(src->is_single_cpu(), "must match"); 916 if (src->type() == T_OBJECT) { 917 __ verify_oop(src->as_register()); 918 } 919 move_regs(src->as_register(), dest->as_register()); 920 921 } else if (dest->is_double_cpu()) { 922 #ifdef _LP64 923 if (src->type() == T_OBJECT || src->type() == T_ARRAY) { 924 // Surprising to me but we can see move of a long to t_object 925 __ verify_oop(src->as_register()); 926 move_regs(src->as_register(), dest->as_register_lo()); 927 return; 928 } 929 #endif 930 assert(src->is_double_cpu(), "must match"); 931 Register f_lo = src->as_register_lo(); 932 Register f_hi = src->as_register_hi(); 933 Register t_lo = dest->as_register_lo(); 934 Register t_hi = dest->as_register_hi(); 935 #ifdef _LP64 936 assert(f_hi == f_lo, "must be same"); 937 assert(t_hi == t_lo, "must be same"); 938 move_regs(f_lo, t_lo); 939 #else 940 assert(f_lo != f_hi && t_lo != t_hi, "invalid register allocation"); 941 942 943 if (f_lo == t_hi && f_hi == t_lo) { 944 swap_reg(f_lo, f_hi); 945 } else if (f_hi == t_lo) { 946 assert(f_lo != t_hi, "overwriting register"); 947 move_regs(f_hi, t_hi); 948 move_regs(f_lo, t_lo); 949 } else { 950 assert(f_hi != t_lo, "overwriting register"); 951 move_regs(f_lo, t_lo); 952 move_regs(f_hi, t_hi); 953 } 954 #endif // LP64 955 956 // special moves from fpu-register to xmm-register 957 // necessary for method results 958 } else if (src->is_single_xmm() && !dest->is_single_xmm()) { 959 __ movflt(Address(rsp, 0), src->as_xmm_float_reg()); 960 __ fld_s(Address(rsp, 0)); 961 } else if (src->is_double_xmm() && !dest->is_double_xmm()) { 962 __ movdbl(Address(rsp, 0), src->as_xmm_double_reg()); 963 __ fld_d(Address(rsp, 0)); 964 } else if (dest->is_single_xmm() && !src->is_single_xmm()) { 965 __ fstp_s(Address(rsp, 0)); 966 __ movflt(dest->as_xmm_float_reg(), Address(rsp, 0)); 967 } else if (dest->is_double_xmm() && !src->is_double_xmm()) { 968 __ fstp_d(Address(rsp, 0)); 969 __ movdbl(dest->as_xmm_double_reg(), Address(rsp, 0)); 970 971 // move between xmm-registers 972 } else if (dest->is_single_xmm()) { 973 assert(src->is_single_xmm(), "must match"); 974 __ movflt(dest->as_xmm_float_reg(), src->as_xmm_float_reg()); 975 } else if (dest->is_double_xmm()) { 976 assert(src->is_double_xmm(), "must match"); 977 __ movdbl(dest->as_xmm_double_reg(), src->as_xmm_double_reg()); 978 979 // move between fpu-registers (no instruction necessary because of fpu-stack) 980 } else if (dest->is_single_fpu() || dest->is_double_fpu()) { 981 assert(src->is_single_fpu() || src->is_double_fpu(), "must match"); 982 assert(src->fpu() == dest->fpu(), "currently should be nothing to do"); 983 } else { 984 ShouldNotReachHere(); 985 } 986 } 987 988 void LIR_Assembler::reg2stack(LIR_Opr src, LIR_Opr dest, BasicType type, bool pop_fpu_stack) { 989 assert(src->is_register(), "should not call otherwise"); 990 assert(dest->is_stack(), "should not call otherwise"); 991 992 if (src->is_single_cpu()) { 993 Address dst = frame_map()->address_for_slot(dest->single_stack_ix()); 994 if (type == T_OBJECT || type == T_ARRAY) { 995 __ verify_oop(src->as_register()); 996 __ movptr (dst, src->as_register()); 997 } else { 998 __ movl (dst, src->as_register()); 999 } 1000 1001 } else if (src->is_double_cpu()) { 1002 Address dstLO = frame_map()->address_for_slot(dest->double_stack_ix(), lo_word_offset_in_bytes); 1003 Address dstHI = frame_map()->address_for_slot(dest->double_stack_ix(), hi_word_offset_in_bytes); 1004 __ movptr (dstLO, src->as_register_lo()); 1005 NOT_LP64(__ movptr (dstHI, src->as_register_hi())); 1006 1007 } else if (src->is_single_xmm()) { 1008 Address dst_addr = frame_map()->address_for_slot(dest->single_stack_ix()); 1009 __ movflt(dst_addr, src->as_xmm_float_reg()); 1010 1011 } else if (src->is_double_xmm()) { 1012 Address dst_addr = frame_map()->address_for_slot(dest->double_stack_ix()); 1013 __ movdbl(dst_addr, src->as_xmm_double_reg()); 1014 1015 } else if (src->is_single_fpu()) { 1016 assert(src->fpu_regnr() == 0, "argument must be on TOS"); 1017 Address dst_addr = frame_map()->address_for_slot(dest->single_stack_ix()); 1018 if (pop_fpu_stack) __ fstp_s (dst_addr); 1019 else __ fst_s (dst_addr); 1020 1021 } else if (src->is_double_fpu()) { 1022 assert(src->fpu_regnrLo() == 0, "argument must be on TOS"); 1023 Address dst_addr = frame_map()->address_for_slot(dest->double_stack_ix()); 1024 if (pop_fpu_stack) __ fstp_d (dst_addr); 1025 else __ fst_d (dst_addr); 1026 1027 } else { 1028 ShouldNotReachHere(); 1029 } 1030 } 1031 1032 1033 void LIR_Assembler::reg2mem(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_PatchCode patch_code, CodeEmitInfo* info, bool pop_fpu_stack, bool wide, bool /* unaligned */) { 1034 LIR_Address* to_addr = dest->as_address_ptr(); 1035 PatchingStub* patch = NULL; 1036 Register compressed_src = rscratch1; 1037 1038 if (type == T_ARRAY || type == T_OBJECT) { 1039 __ verify_oop(src->as_register()); 1040 #ifdef _LP64 1041 if (UseCompressedOops && !wide) { 1042 __ movptr(compressed_src, src->as_register()); 1043 __ encode_heap_oop(compressed_src); 1044 } 1045 #endif 1046 } 1047 1048 if (patch_code != lir_patch_none) { 1049 patch = new PatchingStub(_masm, PatchingStub::access_field_id); 1050 Address toa = as_Address(to_addr); 1051 assert(toa.disp() != 0, "must have"); 1052 } 1053 1054 int null_check_here = code_offset(); 1055 switch (type) { 1056 case T_FLOAT: { 1057 if (src->is_single_xmm()) { 1058 __ movflt(as_Address(to_addr), src->as_xmm_float_reg()); 1059 } else { 1060 assert(src->is_single_fpu(), "must be"); 1061 assert(src->fpu_regnr() == 0, "argument must be on TOS"); 1062 if (pop_fpu_stack) __ fstp_s(as_Address(to_addr)); 1063 else __ fst_s (as_Address(to_addr)); 1064 } 1065 break; 1066 } 1067 1068 case T_DOUBLE: { 1069 if (src->is_double_xmm()) { 1070 __ movdbl(as_Address(to_addr), src->as_xmm_double_reg()); 1071 } else { 1072 assert(src->is_double_fpu(), "must be"); 1073 assert(src->fpu_regnrLo() == 0, "argument must be on TOS"); 1074 if (pop_fpu_stack) __ fstp_d(as_Address(to_addr)); 1075 else __ fst_d (as_Address(to_addr)); 1076 } 1077 break; 1078 } 1079 1080 case T_ARRAY: // fall through 1081 case T_OBJECT: // fall through 1082 if (UseCompressedOops && !wide) { 1083 __ movl(as_Address(to_addr), compressed_src); 1084 } else { 1085 __ movptr(as_Address(to_addr), src->as_register()); 1086 } 1087 break; 1088 case T_ADDRESS: 1089 __ movptr(as_Address(to_addr), src->as_register()); 1090 break; 1091 case T_INT: 1092 __ movl(as_Address(to_addr), src->as_register()); 1093 break; 1094 1095 case T_LONG: { 1096 Register from_lo = src->as_register_lo(); 1097 Register from_hi = src->as_register_hi(); 1098 #ifdef _LP64 1099 __ movptr(as_Address_lo(to_addr), from_lo); 1100 #else 1101 Register base = to_addr->base()->as_register(); 1102 Register index = noreg; 1103 if (to_addr->index()->is_register()) { 1104 index = to_addr->index()->as_register(); 1105 } 1106 if (base == from_lo || index == from_lo) { 1107 assert(base != from_hi, "can't be"); 1108 assert(index == noreg || (index != base && index != from_hi), "can't handle this"); 1109 __ movl(as_Address_hi(to_addr), from_hi); 1110 if (patch != NULL) { 1111 patching_epilog(patch, lir_patch_high, base, info); 1112 patch = new PatchingStub(_masm, PatchingStub::access_field_id); 1113 patch_code = lir_patch_low; 1114 } 1115 __ movl(as_Address_lo(to_addr), from_lo); 1116 } else { 1117 assert(index == noreg || (index != base && index != from_lo), "can't handle this"); 1118 __ movl(as_Address_lo(to_addr), from_lo); 1119 if (patch != NULL) { 1120 patching_epilog(patch, lir_patch_low, base, info); 1121 patch = new PatchingStub(_masm, PatchingStub::access_field_id); 1122 patch_code = lir_patch_high; 1123 } 1124 __ movl(as_Address_hi(to_addr), from_hi); 1125 } 1126 #endif // _LP64 1127 break; 1128 } 1129 1130 case T_BYTE: // fall through 1131 case T_BOOLEAN: { 1132 Register src_reg = src->as_register(); 1133 Address dst_addr = as_Address(to_addr); 1134 assert(VM_Version::is_P6() || src_reg->has_byte_register(), "must use byte registers if not P6"); 1135 __ movb(dst_addr, src_reg); 1136 break; 1137 } 1138 1139 case T_CHAR: // fall through 1140 case T_SHORT: 1141 __ movw(as_Address(to_addr), src->as_register()); 1142 break; 1143 1144 default: 1145 ShouldNotReachHere(); 1146 } 1147 if (info != NULL) { 1148 add_debug_info_for_null_check(null_check_here, info); 1149 } 1150 1151 if (patch_code != lir_patch_none) { 1152 patching_epilog(patch, patch_code, to_addr->base()->as_register(), info); 1153 } 1154 } 1155 1156 1157 void LIR_Assembler::stack2reg(LIR_Opr src, LIR_Opr dest, BasicType type) { 1158 assert(src->is_stack(), "should not call otherwise"); 1159 assert(dest->is_register(), "should not call otherwise"); 1160 1161 if (dest->is_single_cpu()) { 1162 if (type == T_ARRAY || type == T_OBJECT) { 1163 __ movptr(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix())); 1164 __ verify_oop(dest->as_register()); 1165 } else { 1166 __ movl(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix())); 1167 } 1168 1169 } else if (dest->is_double_cpu()) { 1170 Address src_addr_LO = frame_map()->address_for_slot(src->double_stack_ix(), lo_word_offset_in_bytes); 1171 Address src_addr_HI = frame_map()->address_for_slot(src->double_stack_ix(), hi_word_offset_in_bytes); 1172 __ movptr(dest->as_register_lo(), src_addr_LO); 1173 NOT_LP64(__ movptr(dest->as_register_hi(), src_addr_HI)); 1174 1175 } else if (dest->is_single_xmm()) { 1176 Address src_addr = frame_map()->address_for_slot(src->single_stack_ix()); 1177 __ movflt(dest->as_xmm_float_reg(), src_addr); 1178 1179 } else if (dest->is_double_xmm()) { 1180 Address src_addr = frame_map()->address_for_slot(src->double_stack_ix()); 1181 __ movdbl(dest->as_xmm_double_reg(), src_addr); 1182 1183 } else if (dest->is_single_fpu()) { 1184 assert(dest->fpu_regnr() == 0, "dest must be TOS"); 1185 Address src_addr = frame_map()->address_for_slot(src->single_stack_ix()); 1186 __ fld_s(src_addr); 1187 1188 } else if (dest->is_double_fpu()) { 1189 assert(dest->fpu_regnrLo() == 0, "dest must be TOS"); 1190 Address src_addr = frame_map()->address_for_slot(src->double_stack_ix()); 1191 __ fld_d(src_addr); 1192 1193 } else { 1194 ShouldNotReachHere(); 1195 } 1196 } 1197 1198 1199 void LIR_Assembler::stack2stack(LIR_Opr src, LIR_Opr dest, BasicType type) { 1200 if (src->is_single_stack()) { 1201 if (type == T_OBJECT || type == T_ARRAY) { 1202 __ pushptr(frame_map()->address_for_slot(src ->single_stack_ix())); 1203 __ popptr (frame_map()->address_for_slot(dest->single_stack_ix())); 1204 } else { 1205 #ifndef _LP64 1206 __ pushl(frame_map()->address_for_slot(src ->single_stack_ix())); 1207 __ popl (frame_map()->address_for_slot(dest->single_stack_ix())); 1208 #else 1209 //no pushl on 64bits 1210 __ movl(rscratch1, frame_map()->address_for_slot(src ->single_stack_ix())); 1211 __ movl(frame_map()->address_for_slot(dest->single_stack_ix()), rscratch1); 1212 #endif 1213 } 1214 1215 } else if (src->is_double_stack()) { 1216 #ifdef _LP64 1217 __ pushptr(frame_map()->address_for_slot(src ->double_stack_ix())); 1218 __ popptr (frame_map()->address_for_slot(dest->double_stack_ix())); 1219 #else 1220 __ pushl(frame_map()->address_for_slot(src ->double_stack_ix(), 0)); 1221 // push and pop the part at src + wordSize, adding wordSize for the previous push 1222 __ pushl(frame_map()->address_for_slot(src ->double_stack_ix(), 2 * wordSize)); 1223 __ popl (frame_map()->address_for_slot(dest->double_stack_ix(), 2 * wordSize)); 1224 __ popl (frame_map()->address_for_slot(dest->double_stack_ix(), 0)); 1225 #endif // _LP64 1226 1227 } else { 1228 ShouldNotReachHere(); 1229 } 1230 } 1231 1232 1233 void LIR_Assembler::mem2reg(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_PatchCode patch_code, CodeEmitInfo* info, bool wide, bool /* unaligned */) { 1234 assert(src->is_address(), "should not call otherwise"); 1235 assert(dest->is_register(), "should not call otherwise"); 1236 1237 LIR_Address* addr = src->as_address_ptr(); 1238 Address from_addr = as_Address(addr); 1239 1240 switch (type) { 1241 case T_BOOLEAN: // fall through 1242 case T_BYTE: // fall through 1243 case T_CHAR: // fall through 1244 case T_SHORT: 1245 if (!VM_Version::is_P6() && !from_addr.uses(dest->as_register())) { 1246 // on pre P6 processors we may get partial register stalls 1247 // so blow away the value of to_rinfo before loading a 1248 // partial word into it. Do it here so that it precedes 1249 // the potential patch point below. 1250 __ xorptr(dest->as_register(), dest->as_register()); 1251 } 1252 break; 1253 } 1254 1255 PatchingStub* patch = NULL; 1256 if (patch_code != lir_patch_none) { 1257 patch = new PatchingStub(_masm, PatchingStub::access_field_id); 1258 assert(from_addr.disp() != 0, "must have"); 1259 } 1260 if (info != NULL) { 1261 add_debug_info_for_null_check_here(info); 1262 } 1263 1264 switch (type) { 1265 case T_FLOAT: { 1266 if (dest->is_single_xmm()) { 1267 __ movflt(dest->as_xmm_float_reg(), from_addr); 1268 } else { 1269 assert(dest->is_single_fpu(), "must be"); 1270 assert(dest->fpu_regnr() == 0, "dest must be TOS"); 1271 __ fld_s(from_addr); 1272 } 1273 break; 1274 } 1275 1276 case T_DOUBLE: { 1277 if (dest->is_double_xmm()) { 1278 __ movdbl(dest->as_xmm_double_reg(), from_addr); 1279 } else { 1280 assert(dest->is_double_fpu(), "must be"); 1281 assert(dest->fpu_regnrLo() == 0, "dest must be TOS"); 1282 __ fld_d(from_addr); 1283 } 1284 break; 1285 } 1286 1287 case T_OBJECT: // fall through 1288 case T_ARRAY: // fall through 1289 if (UseCompressedOops && !wide) { 1290 __ movl(dest->as_register(), from_addr); 1291 } else { 1292 __ movptr(dest->as_register(), from_addr); 1293 } 1294 break; 1295 1296 case T_ADDRESS: 1297 __ movptr(dest->as_register(), from_addr); 1298 break; 1299 case T_INT: 1300 __ movl(dest->as_register(), from_addr); 1301 break; 1302 1303 case T_LONG: { 1304 Register to_lo = dest->as_register_lo(); 1305 Register to_hi = dest->as_register_hi(); 1306 #ifdef _LP64 1307 __ movptr(to_lo, as_Address_lo(addr)); 1308 #else 1309 Register base = addr->base()->as_register(); 1310 Register index = noreg; 1311 if (addr->index()->is_register()) { 1312 index = addr->index()->as_register(); 1313 } 1314 if ((base == to_lo && index == to_hi) || 1315 (base == to_hi && index == to_lo)) { 1316 // addresses with 2 registers are only formed as a result of 1317 // array access so this code will never have to deal with 1318 // patches or null checks. 1319 assert(info == NULL && patch == NULL, "must be"); 1320 __ lea(to_hi, as_Address(addr)); 1321 __ movl(to_lo, Address(to_hi, 0)); 1322 __ movl(to_hi, Address(to_hi, BytesPerWord)); 1323 } else if (base == to_lo || index == to_lo) { 1324 assert(base != to_hi, "can't be"); 1325 assert(index == noreg || (index != base && index != to_hi), "can't handle this"); 1326 __ movl(to_hi, as_Address_hi(addr)); 1327 if (patch != NULL) { 1328 patching_epilog(patch, lir_patch_high, base, info); 1329 patch = new PatchingStub(_masm, PatchingStub::access_field_id); 1330 patch_code = lir_patch_low; 1331 } 1332 __ movl(to_lo, as_Address_lo(addr)); 1333 } else { 1334 assert(index == noreg || (index != base && index != to_lo), "can't handle this"); 1335 __ movl(to_lo, as_Address_lo(addr)); 1336 if (patch != NULL) { 1337 patching_epilog(patch, lir_patch_low, base, info); 1338 patch = new PatchingStub(_masm, PatchingStub::access_field_id); 1339 patch_code = lir_patch_high; 1340 } 1341 __ movl(to_hi, as_Address_hi(addr)); 1342 } 1343 #endif // _LP64 1344 break; 1345 } 1346 1347 case T_BOOLEAN: // fall through 1348 case T_BYTE: { 1349 Register dest_reg = dest->as_register(); 1350 assert(VM_Version::is_P6() || dest_reg->has_byte_register(), "must use byte registers if not P6"); 1351 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) { 1352 __ movsbl(dest_reg, from_addr); 1353 } else { 1354 __ movb(dest_reg, from_addr); 1355 __ shll(dest_reg, 24); 1356 __ sarl(dest_reg, 24); 1357 } 1358 break; 1359 } 1360 1361 case T_CHAR: { 1362 Register dest_reg = dest->as_register(); 1363 assert(VM_Version::is_P6() || dest_reg->has_byte_register(), "must use byte registers if not P6"); 1364 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) { 1365 __ movzwl(dest_reg, from_addr); 1366 } else { 1367 __ movw(dest_reg, from_addr); 1368 } 1369 break; 1370 } 1371 1372 case T_SHORT: { 1373 Register dest_reg = dest->as_register(); 1374 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) { 1375 __ movswl(dest_reg, from_addr); 1376 } else { 1377 __ movw(dest_reg, from_addr); 1378 __ shll(dest_reg, 16); 1379 __ sarl(dest_reg, 16); 1380 } 1381 break; 1382 } 1383 1384 default: 1385 ShouldNotReachHere(); 1386 } 1387 1388 if (patch != NULL) { 1389 patching_epilog(patch, patch_code, addr->base()->as_register(), info); 1390 } 1391 1392 if (type == T_ARRAY || type == T_OBJECT) { 1393 #ifdef _LP64 1394 if (UseCompressedOops && !wide) { 1395 __ decode_heap_oop(dest->as_register()); 1396 } 1397 #endif 1398 __ verify_oop(dest->as_register()); 1399 } 1400 } 1401 1402 1403 void LIR_Assembler::prefetchr(LIR_Opr src) { 1404 LIR_Address* addr = src->as_address_ptr(); 1405 Address from_addr = as_Address(addr); 1406 1407 if (VM_Version::supports_sse()) { 1408 switch (ReadPrefetchInstr) { 1409 case 0: 1410 __ prefetchnta(from_addr); break; 1411 case 1: 1412 __ prefetcht0(from_addr); break; 1413 case 2: 1414 __ prefetcht2(from_addr); break; 1415 default: 1416 ShouldNotReachHere(); break; 1417 } 1418 } else if (VM_Version::supports_3dnow()) { 1419 __ prefetchr(from_addr); 1420 } 1421 } 1422 1423 1424 void LIR_Assembler::prefetchw(LIR_Opr src) { 1425 LIR_Address* addr = src->as_address_ptr(); 1426 Address from_addr = as_Address(addr); 1427 1428 if (VM_Version::supports_sse()) { 1429 switch (AllocatePrefetchInstr) { 1430 case 0: 1431 __ prefetchnta(from_addr); break; 1432 case 1: 1433 __ prefetcht0(from_addr); break; 1434 case 2: 1435 __ prefetcht2(from_addr); break; 1436 case 3: 1437 __ prefetchw(from_addr); break; 1438 default: 1439 ShouldNotReachHere(); break; 1440 } 1441 } else if (VM_Version::supports_3dnow()) { 1442 __ prefetchw(from_addr); 1443 } 1444 } 1445 1446 1447 NEEDS_CLEANUP; // This could be static? 1448 Address::ScaleFactor LIR_Assembler::array_element_size(BasicType type) const { 1449 int elem_size = type2aelembytes(type); 1450 switch (elem_size) { 1451 case 1: return Address::times_1; 1452 case 2: return Address::times_2; 1453 case 4: return Address::times_4; 1454 case 8: return Address::times_8; 1455 } 1456 ShouldNotReachHere(); 1457 return Address::no_scale; 1458 } 1459 1460 1461 void LIR_Assembler::emit_op3(LIR_Op3* op) { 1462 switch (op->code()) { 1463 case lir_idiv: 1464 case lir_irem: 1465 arithmetic_idiv(op->code(), 1466 op->in_opr1(), 1467 op->in_opr2(), 1468 op->in_opr3(), 1469 op->result_opr(), 1470 op->info()); 1471 break; 1472 default: ShouldNotReachHere(); break; 1473 } 1474 } 1475 1476 void LIR_Assembler::emit_opBranch(LIR_OpBranch* op) { 1477 #ifdef ASSERT 1478 assert(op->block() == NULL || op->block()->label() == op->label(), "wrong label"); 1479 if (op->block() != NULL) _branch_target_blocks.append(op->block()); 1480 if (op->ublock() != NULL) _branch_target_blocks.append(op->ublock()); 1481 #endif 1482 1483 if (op->cond() == lir_cond_always) { 1484 if (op->info() != NULL) add_debug_info_for_branch(op->info()); 1485 __ jmp (*(op->label())); 1486 } else { 1487 Assembler::Condition acond = Assembler::zero; 1488 if (op->code() == lir_cond_float_branch) { 1489 assert(op->ublock() != NULL, "must have unordered successor"); 1490 __ jcc(Assembler::parity, *(op->ublock()->label())); 1491 switch(op->cond()) { 1492 case lir_cond_equal: acond = Assembler::equal; break; 1493 case lir_cond_notEqual: acond = Assembler::notEqual; break; 1494 case lir_cond_less: acond = Assembler::below; break; 1495 case lir_cond_lessEqual: acond = Assembler::belowEqual; break; 1496 case lir_cond_greaterEqual: acond = Assembler::aboveEqual; break; 1497 case lir_cond_greater: acond = Assembler::above; break; 1498 default: ShouldNotReachHere(); 1499 } 1500 } else { 1501 switch (op->cond()) { 1502 case lir_cond_equal: acond = Assembler::equal; break; 1503 case lir_cond_notEqual: acond = Assembler::notEqual; break; 1504 case lir_cond_less: acond = Assembler::less; break; 1505 case lir_cond_lessEqual: acond = Assembler::lessEqual; break; 1506 case lir_cond_greaterEqual: acond = Assembler::greaterEqual;break; 1507 case lir_cond_greater: acond = Assembler::greater; break; 1508 case lir_cond_belowEqual: acond = Assembler::belowEqual; break; 1509 case lir_cond_aboveEqual: acond = Assembler::aboveEqual; break; 1510 default: ShouldNotReachHere(); 1511 } 1512 } 1513 __ jcc(acond,*(op->label())); 1514 } 1515 } 1516 1517 void LIR_Assembler::emit_opConvert(LIR_OpConvert* op) { 1518 LIR_Opr src = op->in_opr(); 1519 LIR_Opr dest = op->result_opr(); 1520 1521 switch (op->bytecode()) { 1522 case Bytecodes::_i2l: 1523 #ifdef _LP64 1524 __ movl2ptr(dest->as_register_lo(), src->as_register()); 1525 #else 1526 move_regs(src->as_register(), dest->as_register_lo()); 1527 move_regs(src->as_register(), dest->as_register_hi()); 1528 __ sarl(dest->as_register_hi(), 31); 1529 #endif // LP64 1530 break; 1531 1532 case Bytecodes::_l2i: 1533 move_regs(src->as_register_lo(), dest->as_register()); 1534 break; 1535 1536 case Bytecodes::_i2b: 1537 move_regs(src->as_register(), dest->as_register()); 1538 __ sign_extend_byte(dest->as_register()); 1539 break; 1540 1541 case Bytecodes::_i2c: 1542 move_regs(src->as_register(), dest->as_register()); 1543 __ andl(dest->as_register(), 0xFFFF); 1544 break; 1545 1546 case Bytecodes::_i2s: 1547 move_regs(src->as_register(), dest->as_register()); 1548 __ sign_extend_short(dest->as_register()); 1549 break; 1550 1551 1552 case Bytecodes::_f2d: 1553 case Bytecodes::_d2f: 1554 if (dest->is_single_xmm()) { 1555 __ cvtsd2ss(dest->as_xmm_float_reg(), src->as_xmm_double_reg()); 1556 } else if (dest->is_double_xmm()) { 1557 __ cvtss2sd(dest->as_xmm_double_reg(), src->as_xmm_float_reg()); 1558 } else { 1559 assert(src->fpu() == dest->fpu(), "register must be equal"); 1560 // do nothing (float result is rounded later through spilling) 1561 } 1562 break; 1563 1564 case Bytecodes::_i2f: 1565 case Bytecodes::_i2d: 1566 if (dest->is_single_xmm()) { 1567 __ cvtsi2ssl(dest->as_xmm_float_reg(), src->as_register()); 1568 } else if (dest->is_double_xmm()) { 1569 __ cvtsi2sdl(dest->as_xmm_double_reg(), src->as_register()); 1570 } else { 1571 assert(dest->fpu() == 0, "result must be on TOS"); 1572 __ movl(Address(rsp, 0), src->as_register()); 1573 __ fild_s(Address(rsp, 0)); 1574 } 1575 break; 1576 1577 case Bytecodes::_f2i: 1578 case Bytecodes::_d2i: 1579 if (src->is_single_xmm()) { 1580 __ cvttss2sil(dest->as_register(), src->as_xmm_float_reg()); 1581 } else if (src->is_double_xmm()) { 1582 __ cvttsd2sil(dest->as_register(), src->as_xmm_double_reg()); 1583 } else { 1584 assert(src->fpu() == 0, "input must be on TOS"); 1585 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_trunc())); 1586 __ fist_s(Address(rsp, 0)); 1587 __ movl(dest->as_register(), Address(rsp, 0)); 1588 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); 1589 } 1590 1591 // IA32 conversion instructions do not match JLS for overflow, underflow and NaN -> fixup in stub 1592 assert(op->stub() != NULL, "stub required"); 1593 __ cmpl(dest->as_register(), 0x80000000); 1594 __ jcc(Assembler::equal, *op->stub()->entry()); 1595 __ bind(*op->stub()->continuation()); 1596 break; 1597 1598 case Bytecodes::_l2f: 1599 case Bytecodes::_l2d: 1600 assert(!dest->is_xmm_register(), "result in xmm register not supported (no SSE instruction present)"); 1601 assert(dest->fpu() == 0, "result must be on TOS"); 1602 1603 __ movptr(Address(rsp, 0), src->as_register_lo()); 1604 NOT_LP64(__ movl(Address(rsp, BytesPerWord), src->as_register_hi())); 1605 __ fild_d(Address(rsp, 0)); 1606 // float result is rounded later through spilling 1607 break; 1608 1609 case Bytecodes::_f2l: 1610 case Bytecodes::_d2l: 1611 assert(!src->is_xmm_register(), "input in xmm register not supported (no SSE instruction present)"); 1612 assert(src->fpu() == 0, "input must be on TOS"); 1613 assert(dest == FrameMap::long0_opr, "runtime stub places result in these registers"); 1614 1615 // instruction sequence too long to inline it here 1616 { 1617 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::fpu2long_stub_id))); 1618 } 1619 break; 1620 1621 default: ShouldNotReachHere(); 1622 } 1623 } 1624 1625 void LIR_Assembler::emit_alloc_obj(LIR_OpAllocObj* op) { 1626 if (op->init_check()) { 1627 __ cmpl(Address(op->klass()->as_register(), 1628 instanceKlass::init_state_offset_in_bytes() + sizeof(oopDesc)), 1629 instanceKlass::fully_initialized); 1630 add_debug_info_for_null_check_here(op->stub()->info()); 1631 __ jcc(Assembler::notEqual, *op->stub()->entry()); 1632 } 1633 __ allocate_object(op->obj()->as_register(), 1634 op->tmp1()->as_register(), 1635 op->tmp2()->as_register(), 1636 op->header_size(), 1637 op->object_size(), 1638 op->klass()->as_register(), 1639 *op->stub()->entry()); 1640 __ bind(*op->stub()->continuation()); 1641 } 1642 1643 void LIR_Assembler::emit_alloc_array(LIR_OpAllocArray* op) { 1644 if (UseSlowPath || 1645 (!UseFastNewObjectArray && (op->type() == T_OBJECT || op->type() == T_ARRAY)) || 1646 (!UseFastNewTypeArray && (op->type() != T_OBJECT && op->type() != T_ARRAY))) { 1647 __ jmp(*op->stub()->entry()); 1648 } else { 1649 Register len = op->len()->as_register(); 1650 Register tmp1 = op->tmp1()->as_register(); 1651 Register tmp2 = op->tmp2()->as_register(); 1652 Register tmp3 = op->tmp3()->as_register(); 1653 if (len == tmp1) { 1654 tmp1 = tmp3; 1655 } else if (len == tmp2) { 1656 tmp2 = tmp3; 1657 } else if (len == tmp3) { 1658 // everything is ok 1659 } else { 1660 __ mov(tmp3, len); 1661 } 1662 __ allocate_array(op->obj()->as_register(), 1663 len, 1664 tmp1, 1665 tmp2, 1666 arrayOopDesc::header_size(op->type()), 1667 array_element_size(op->type()), 1668 op->klass()->as_register(), 1669 *op->stub()->entry()); 1670 } 1671 __ bind(*op->stub()->continuation()); 1672 } 1673 1674 void LIR_Assembler::type_profile_helper(Register mdo, 1675 ciMethodData *md, ciProfileData *data, 1676 Register recv, Label* update_done) { 1677 for (uint i = 0; i < ReceiverTypeData::row_limit(); i++) { 1678 Label next_test; 1679 // See if the receiver is receiver[n]. 1680 __ cmpptr(recv, Address(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i)))); 1681 __ jccb(Assembler::notEqual, next_test); 1682 Address data_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i))); 1683 __ addptr(data_addr, DataLayout::counter_increment); 1684 __ jmp(*update_done); 1685 __ bind(next_test); 1686 } 1687 1688 // Didn't find receiver; find next empty slot and fill it in 1689 for (uint i = 0; i < ReceiverTypeData::row_limit(); i++) { 1690 Label next_test; 1691 Address recv_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i))); 1692 __ cmpptr(recv_addr, (intptr_t)NULL_WORD); 1693 __ jccb(Assembler::notEqual, next_test); 1694 __ movptr(recv_addr, recv); 1695 __ movptr(Address(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i))), DataLayout::counter_increment); 1696 __ jmp(*update_done); 1697 __ bind(next_test); 1698 } 1699 } 1700 1701 void LIR_Assembler::emit_typecheck_helper(LIR_OpTypeCheck *op, Label* success, Label* failure, Label* obj_is_null) { 1702 // we always need a stub for the failure case. 1703 CodeStub* stub = op->stub(); 1704 Register obj = op->object()->as_register(); 1705 Register k_RInfo = op->tmp1()->as_register(); 1706 Register klass_RInfo = op->tmp2()->as_register(); 1707 Register dst = op->result_opr()->as_register(); 1708 ciKlass* k = op->klass(); 1709 Register Rtmp1 = noreg; 1710 1711 // check if it needs to be profiled 1712 ciMethodData* md; 1713 ciProfileData* data; 1714 1715 if (op->should_profile()) { 1716 ciMethod* method = op->profiled_method(); 1717 assert(method != NULL, "Should have method"); 1718 int bci = op->profiled_bci(); 1719 md = method->method_data_or_null(); 1720 assert(md != NULL, "Sanity"); 1721 data = md->bci_to_data(bci); 1722 assert(data != NULL, "need data for type check"); 1723 assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for type check"); 1724 } 1725 Label profile_cast_success, profile_cast_failure; 1726 Label *success_target = op->should_profile() ? &profile_cast_success : success; 1727 Label *failure_target = op->should_profile() ? &profile_cast_failure : failure; 1728 1729 if (obj == k_RInfo) { 1730 k_RInfo = dst; 1731 } else if (obj == klass_RInfo) { 1732 klass_RInfo = dst; 1733 } 1734 if (k->is_loaded() && !UseCompressedOops) { 1735 select_different_registers(obj, dst, k_RInfo, klass_RInfo); 1736 } else { 1737 Rtmp1 = op->tmp3()->as_register(); 1738 select_different_registers(obj, dst, k_RInfo, klass_RInfo, Rtmp1); 1739 } 1740 1741 assert_different_registers(obj, k_RInfo, klass_RInfo); 1742 if (!k->is_loaded()) { 1743 jobject2reg_with_patching(k_RInfo, op->info_for_patch()); 1744 } else { 1745 #ifdef _LP64 1746 __ movoop(k_RInfo, k->constant_encoding()); 1747 #endif // _LP64 1748 } 1749 assert(obj != k_RInfo, "must be different"); 1750 1751 __ cmpptr(obj, (int32_t)NULL_WORD); 1752 if (op->should_profile()) { 1753 Label not_null; 1754 __ jccb(Assembler::notEqual, not_null); 1755 // Object is null; update MDO and exit 1756 Register mdo = klass_RInfo; 1757 __ movoop(mdo, md->constant_encoding()); 1758 Address data_addr(mdo, md->byte_offset_of_slot(data, DataLayout::header_offset())); 1759 int header_bits = DataLayout::flag_mask_to_header_mask(BitData::null_seen_byte_constant()); 1760 __ orl(data_addr, header_bits); 1761 __ jmp(*obj_is_null); 1762 __ bind(not_null); 1763 } else { 1764 __ jcc(Assembler::equal, *obj_is_null); 1765 } 1766 __ verify_oop(obj); 1767 1768 if (op->fast_check()) { 1769 // get object class 1770 // not a safepoint as obj null check happens earlier 1771 #ifdef _LP64 1772 if (UseCompressedOops) { 1773 __ load_klass(Rtmp1, obj); 1774 __ cmpptr(k_RInfo, Rtmp1); 1775 } else { 1776 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); 1777 } 1778 #else 1779 if (k->is_loaded()) { 1780 __ cmpoop(Address(obj, oopDesc::klass_offset_in_bytes()), k->constant_encoding()); 1781 } else { 1782 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); 1783 } 1784 #endif 1785 __ jcc(Assembler::notEqual, *failure_target); 1786 // successful cast, fall through to profile or jump 1787 } else { 1788 // get object class 1789 // not a safepoint as obj null check happens earlier 1790 __ load_klass(klass_RInfo, obj); 1791 if (k->is_loaded()) { 1792 // See if we get an immediate positive hit 1793 #ifdef _LP64 1794 __ cmpptr(k_RInfo, Address(klass_RInfo, k->super_check_offset())); 1795 #else 1796 __ cmpoop(Address(klass_RInfo, k->super_check_offset()), k->constant_encoding()); 1797 #endif // _LP64 1798 if (sizeof(oopDesc) + Klass::secondary_super_cache_offset_in_bytes() != k->super_check_offset()) { 1799 __ jcc(Assembler::notEqual, *failure_target); 1800 // successful cast, fall through to profile or jump 1801 } else { 1802 // See if we get an immediate positive hit 1803 __ jcc(Assembler::equal, *success_target); 1804 // check for self 1805 #ifdef _LP64 1806 __ cmpptr(klass_RInfo, k_RInfo); 1807 #else 1808 __ cmpoop(klass_RInfo, k->constant_encoding()); 1809 #endif // _LP64 1810 __ jcc(Assembler::equal, *success_target); 1811 1812 __ push(klass_RInfo); 1813 #ifdef _LP64 1814 __ push(k_RInfo); 1815 #else 1816 __ pushoop(k->constant_encoding()); 1817 #endif // _LP64 1818 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); 1819 __ pop(klass_RInfo); 1820 __ pop(klass_RInfo); 1821 // result is a boolean 1822 __ cmpl(klass_RInfo, 0); 1823 __ jcc(Assembler::equal, *failure_target); 1824 // successful cast, fall through to profile or jump 1825 } 1826 } else { 1827 // perform the fast part of the checking logic 1828 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, success_target, failure_target, NULL); 1829 // call out-of-line instance of __ check_klass_subtype_slow_path(...): 1830 __ push(klass_RInfo); 1831 __ push(k_RInfo); 1832 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); 1833 __ pop(klass_RInfo); 1834 __ pop(k_RInfo); 1835 // result is a boolean 1836 __ cmpl(k_RInfo, 0); 1837 __ jcc(Assembler::equal, *failure_target); 1838 // successful cast, fall through to profile or jump 1839 } 1840 } 1841 if (op->should_profile()) { 1842 Register mdo = klass_RInfo, recv = k_RInfo; 1843 __ bind(profile_cast_success); 1844 __ movoop(mdo, md->constant_encoding()); 1845 __ load_klass(recv, obj); 1846 Label update_done; 1847 type_profile_helper(mdo, md, data, recv, success); 1848 __ jmp(*success); 1849 1850 __ bind(profile_cast_failure); 1851 __ movoop(mdo, md->constant_encoding()); 1852 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset())); 1853 __ subptr(counter_addr, DataLayout::counter_increment); 1854 __ jmp(*failure); 1855 } 1856 __ jmp(*success); 1857 } 1858 1859 1860 void LIR_Assembler::emit_opTypeCheck(LIR_OpTypeCheck* op) { 1861 LIR_Code code = op->code(); 1862 if (code == lir_store_check) { 1863 Register value = op->object()->as_register(); 1864 Register array = op->array()->as_register(); 1865 Register k_RInfo = op->tmp1()->as_register(); 1866 Register klass_RInfo = op->tmp2()->as_register(); 1867 Register Rtmp1 = op->tmp3()->as_register(); 1868 1869 CodeStub* stub = op->stub(); 1870 1871 // check if it needs to be profiled 1872 ciMethodData* md; 1873 ciProfileData* data; 1874 1875 if (op->should_profile()) { 1876 ciMethod* method = op->profiled_method(); 1877 assert(method != NULL, "Should have method"); 1878 int bci = op->profiled_bci(); 1879 md = method->method_data_or_null(); 1880 assert(md != NULL, "Sanity"); 1881 data = md->bci_to_data(bci); 1882 assert(data != NULL, "need data for type check"); 1883 assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for type check"); 1884 } 1885 Label profile_cast_success, profile_cast_failure, done; 1886 Label *success_target = op->should_profile() ? &profile_cast_success : &done; 1887 Label *failure_target = op->should_profile() ? &profile_cast_failure : stub->entry(); 1888 1889 __ cmpptr(value, (int32_t)NULL_WORD); 1890 if (op->should_profile()) { 1891 Label not_null; 1892 __ jccb(Assembler::notEqual, not_null); 1893 // Object is null; update MDO and exit 1894 Register mdo = klass_RInfo; 1895 __ movoop(mdo, md->constant_encoding()); 1896 Address data_addr(mdo, md->byte_offset_of_slot(data, DataLayout::header_offset())); 1897 int header_bits = DataLayout::flag_mask_to_header_mask(BitData::null_seen_byte_constant()); 1898 __ orl(data_addr, header_bits); 1899 __ jmp(done); 1900 __ bind(not_null); 1901 } else { 1902 __ jcc(Assembler::equal, done); 1903 } 1904 1905 add_debug_info_for_null_check_here(op->info_for_exception()); 1906 __ load_klass(k_RInfo, array); 1907 __ load_klass(klass_RInfo, value); 1908 1909 // get instance klass (it's already uncompressed) 1910 __ movptr(k_RInfo, Address(k_RInfo, objArrayKlass::element_klass_offset_in_bytes() + sizeof(oopDesc))); 1911 // perform the fast part of the checking logic 1912 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, success_target, failure_target, NULL); 1913 // call out-of-line instance of __ check_klass_subtype_slow_path(...): 1914 __ push(klass_RInfo); 1915 __ push(k_RInfo); 1916 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); 1917 __ pop(klass_RInfo); 1918 __ pop(k_RInfo); 1919 // result is a boolean 1920 __ cmpl(k_RInfo, 0); 1921 __ jcc(Assembler::equal, *failure_target); 1922 // fall through to the success case 1923 1924 if (op->should_profile()) { 1925 Register mdo = klass_RInfo, recv = k_RInfo; 1926 __ bind(profile_cast_success); 1927 __ movoop(mdo, md->constant_encoding()); 1928 __ load_klass(recv, value); 1929 Label update_done; 1930 type_profile_helper(mdo, md, data, recv, &done); 1931 __ jmpb(done); 1932 1933 __ bind(profile_cast_failure); 1934 __ movoop(mdo, md->constant_encoding()); 1935 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset())); 1936 __ subptr(counter_addr, DataLayout::counter_increment); 1937 __ jmp(*stub->entry()); 1938 } 1939 1940 __ bind(done); 1941 } else 1942 if (code == lir_checkcast) { 1943 Register obj = op->object()->as_register(); 1944 Register dst = op->result_opr()->as_register(); 1945 Label success; 1946 emit_typecheck_helper(op, &success, op->stub()->entry(), &success); 1947 __ bind(success); 1948 if (dst != obj) { 1949 __ mov(dst, obj); 1950 } 1951 } else 1952 if (code == lir_instanceof) { 1953 Register obj = op->object()->as_register(); 1954 Register dst = op->result_opr()->as_register(); 1955 Label success, failure, done; 1956 emit_typecheck_helper(op, &success, &failure, &failure); 1957 __ bind(failure); 1958 __ xorptr(dst, dst); 1959 __ jmpb(done); 1960 __ bind(success); 1961 __ movptr(dst, 1); 1962 __ bind(done); 1963 } else { 1964 ShouldNotReachHere(); 1965 } 1966 1967 } 1968 1969 1970 void LIR_Assembler::emit_compare_and_swap(LIR_OpCompareAndSwap* op) { 1971 if (LP64_ONLY(false &&) op->code() == lir_cas_long && VM_Version::supports_cx8()) { 1972 assert(op->cmp_value()->as_register_lo() == rax, "wrong register"); 1973 assert(op->cmp_value()->as_register_hi() == rdx, "wrong register"); 1974 assert(op->new_value()->as_register_lo() == rbx, "wrong register"); 1975 assert(op->new_value()->as_register_hi() == rcx, "wrong register"); 1976 Register addr = op->addr()->as_register(); 1977 if (os::is_MP()) { 1978 __ lock(); 1979 } 1980 NOT_LP64(__ cmpxchg8(Address(addr, 0))); 1981 1982 } else if (op->code() == lir_cas_int || op->code() == lir_cas_obj ) { 1983 NOT_LP64(assert(op->addr()->is_single_cpu(), "must be single");) 1984 Register addr = (op->addr()->is_single_cpu() ? op->addr()->as_register() : op->addr()->as_register_lo()); 1985 Register newval = op->new_value()->as_register(); 1986 Register cmpval = op->cmp_value()->as_register(); 1987 assert(cmpval == rax, "wrong register"); 1988 assert(newval != NULL, "new val must be register"); 1989 assert(cmpval != newval, "cmp and new values must be in different registers"); 1990 assert(cmpval != addr, "cmp and addr must be in different registers"); 1991 assert(newval != addr, "new value and addr must be in different registers"); 1992 1993 if ( op->code() == lir_cas_obj) { 1994 #ifdef _LP64 1995 if (UseCompressedOops) { 1996 __ mov(rscratch1, cmpval); 1997 __ encode_heap_oop(cmpval); 1998 __ mov(rscratch2, newval); 1999 __ encode_heap_oop(rscratch2); 2000 if (os::is_MP()) { 2001 __ lock(); 2002 } 2003 __ cmpxchgl(rscratch2, Address(addr, 0)); 2004 __ mov(cmpval, rscratch1); 2005 } else 2006 #endif 2007 { 2008 if (os::is_MP()) { 2009 __ lock(); 2010 } 2011 __ cmpxchgptr(newval, Address(addr, 0)); 2012 } 2013 } else { 2014 assert(op->code() == lir_cas_int, "lir_cas_int expected"); 2015 if (os::is_MP()) { 2016 __ lock(); 2017 } 2018 __ cmpxchgl(newval, Address(addr, 0)); 2019 } 2020 #ifdef _LP64 2021 } else if (op->code() == lir_cas_long) { 2022 Register addr = (op->addr()->is_single_cpu() ? op->addr()->as_register() : op->addr()->as_register_lo()); 2023 Register newval = op->new_value()->as_register_lo(); 2024 Register cmpval = op->cmp_value()->as_register_lo(); 2025 assert(cmpval == rax, "wrong register"); 2026 assert(newval != NULL, "new val must be register"); 2027 assert(cmpval != newval, "cmp and new values must be in different registers"); 2028 assert(cmpval != addr, "cmp and addr must be in different registers"); 2029 assert(newval != addr, "new value and addr must be in different registers"); 2030 if (os::is_MP()) { 2031 __ lock(); 2032 } 2033 __ cmpxchgq(newval, Address(addr, 0)); 2034 #endif // _LP64 2035 } else { 2036 Unimplemented(); 2037 } 2038 } 2039 2040 void LIR_Assembler::cmove(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result) { 2041 Assembler::Condition acond, ncond; 2042 switch (condition) { 2043 case lir_cond_equal: acond = Assembler::equal; ncond = Assembler::notEqual; break; 2044 case lir_cond_notEqual: acond = Assembler::notEqual; ncond = Assembler::equal; break; 2045 case lir_cond_less: acond = Assembler::less; ncond = Assembler::greaterEqual; break; 2046 case lir_cond_lessEqual: acond = Assembler::lessEqual; ncond = Assembler::greater; break; 2047 case lir_cond_greaterEqual: acond = Assembler::greaterEqual; ncond = Assembler::less; break; 2048 case lir_cond_greater: acond = Assembler::greater; ncond = Assembler::lessEqual; break; 2049 case lir_cond_belowEqual: acond = Assembler::belowEqual; ncond = Assembler::above; break; 2050 case lir_cond_aboveEqual: acond = Assembler::aboveEqual; ncond = Assembler::below; break; 2051 default: ShouldNotReachHere(); 2052 } 2053 2054 if (opr1->is_cpu_register()) { 2055 reg2reg(opr1, result); 2056 } else if (opr1->is_stack()) { 2057 stack2reg(opr1, result, result->type()); 2058 } else if (opr1->is_constant()) { 2059 const2reg(opr1, result, lir_patch_none, NULL); 2060 } else { 2061 ShouldNotReachHere(); 2062 } 2063 2064 if (VM_Version::supports_cmov() && !opr2->is_constant()) { 2065 // optimized version that does not require a branch 2066 if (opr2->is_single_cpu()) { 2067 assert(opr2->cpu_regnr() != result->cpu_regnr(), "opr2 already overwritten by previous move"); 2068 __ cmov(ncond, result->as_register(), opr2->as_register()); 2069 } else if (opr2->is_double_cpu()) { 2070 assert(opr2->cpu_regnrLo() != result->cpu_regnrLo() && opr2->cpu_regnrLo() != result->cpu_regnrHi(), "opr2 already overwritten by previous move"); 2071 assert(opr2->cpu_regnrHi() != result->cpu_regnrLo() && opr2->cpu_regnrHi() != result->cpu_regnrHi(), "opr2 already overwritten by previous move"); 2072 __ cmovptr(ncond, result->as_register_lo(), opr2->as_register_lo()); 2073 NOT_LP64(__ cmovptr(ncond, result->as_register_hi(), opr2->as_register_hi());) 2074 } else if (opr2->is_single_stack()) { 2075 __ cmovl(ncond, result->as_register(), frame_map()->address_for_slot(opr2->single_stack_ix())); 2076 } else if (opr2->is_double_stack()) { 2077 __ cmovptr(ncond, result->as_register_lo(), frame_map()->address_for_slot(opr2->double_stack_ix(), lo_word_offset_in_bytes)); 2078 NOT_LP64(__ cmovptr(ncond, result->as_register_hi(), frame_map()->address_for_slot(opr2->double_stack_ix(), hi_word_offset_in_bytes));) 2079 } else { 2080 ShouldNotReachHere(); 2081 } 2082 2083 } else { 2084 Label skip; 2085 __ jcc (acond, skip); 2086 if (opr2->is_cpu_register()) { 2087 reg2reg(opr2, result); 2088 } else if (opr2->is_stack()) { 2089 stack2reg(opr2, result, result->type()); 2090 } else if (opr2->is_constant()) { 2091 const2reg(opr2, result, lir_patch_none, NULL); 2092 } else { 2093 ShouldNotReachHere(); 2094 } 2095 __ bind(skip); 2096 } 2097 } 2098 2099 2100 void LIR_Assembler::arith_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest, CodeEmitInfo* info, bool pop_fpu_stack) { 2101 assert(info == NULL, "should never be used, idiv/irem and ldiv/lrem not handled by this method"); 2102 2103 if (left->is_single_cpu()) { 2104 assert(left == dest, "left and dest must be equal"); 2105 Register lreg = left->as_register(); 2106 2107 if (right->is_single_cpu()) { 2108 // cpu register - cpu register 2109 Register rreg = right->as_register(); 2110 switch (code) { 2111 case lir_add: __ addl (lreg, rreg); break; 2112 case lir_sub: __ subl (lreg, rreg); break; 2113 case lir_mul: __ imull(lreg, rreg); break; 2114 default: ShouldNotReachHere(); 2115 } 2116 2117 } else if (right->is_stack()) { 2118 // cpu register - stack 2119 Address raddr = frame_map()->address_for_slot(right->single_stack_ix()); 2120 switch (code) { 2121 case lir_add: __ addl(lreg, raddr); break; 2122 case lir_sub: __ subl(lreg, raddr); break; 2123 default: ShouldNotReachHere(); 2124 } 2125 2126 } else if (right->is_constant()) { 2127 // cpu register - constant 2128 jint c = right->as_constant_ptr()->as_jint(); 2129 switch (code) { 2130 case lir_add: { 2131 __ incrementl(lreg, c); 2132 break; 2133 } 2134 case lir_sub: { 2135 __ decrementl(lreg, c); 2136 break; 2137 } 2138 default: ShouldNotReachHere(); 2139 } 2140 2141 } else { 2142 ShouldNotReachHere(); 2143 } 2144 2145 } else if (left->is_double_cpu()) { 2146 assert(left == dest, "left and dest must be equal"); 2147 Register lreg_lo = left->as_register_lo(); 2148 Register lreg_hi = left->as_register_hi(); 2149 2150 if (right->is_double_cpu()) { 2151 // cpu register - cpu register 2152 Register rreg_lo = right->as_register_lo(); 2153 Register rreg_hi = right->as_register_hi(); 2154 NOT_LP64(assert_different_registers(lreg_lo, lreg_hi, rreg_lo, rreg_hi)); 2155 LP64_ONLY(assert_different_registers(lreg_lo, rreg_lo)); 2156 switch (code) { 2157 case lir_add: 2158 __ addptr(lreg_lo, rreg_lo); 2159 NOT_LP64(__ adcl(lreg_hi, rreg_hi)); 2160 break; 2161 case lir_sub: 2162 __ subptr(lreg_lo, rreg_lo); 2163 NOT_LP64(__ sbbl(lreg_hi, rreg_hi)); 2164 break; 2165 case lir_mul: 2166 #ifdef _LP64 2167 __ imulq(lreg_lo, rreg_lo); 2168 #else 2169 assert(lreg_lo == rax && lreg_hi == rdx, "must be"); 2170 __ imull(lreg_hi, rreg_lo); 2171 __ imull(rreg_hi, lreg_lo); 2172 __ addl (rreg_hi, lreg_hi); 2173 __ mull (rreg_lo); 2174 __ addl (lreg_hi, rreg_hi); 2175 #endif // _LP64 2176 break; 2177 default: 2178 ShouldNotReachHere(); 2179 } 2180 2181 } else if (right->is_constant()) { 2182 // cpu register - constant 2183 #ifdef _LP64 2184 jlong c = right->as_constant_ptr()->as_jlong_bits(); 2185 __ movptr(r10, (intptr_t) c); 2186 switch (code) { 2187 case lir_add: 2188 __ addptr(lreg_lo, r10); 2189 break; 2190 case lir_sub: 2191 __ subptr(lreg_lo, r10); 2192 break; 2193 default: 2194 ShouldNotReachHere(); 2195 } 2196 #else 2197 jint c_lo = right->as_constant_ptr()->as_jint_lo(); 2198 jint c_hi = right->as_constant_ptr()->as_jint_hi(); 2199 switch (code) { 2200 case lir_add: 2201 __ addptr(lreg_lo, c_lo); 2202 __ adcl(lreg_hi, c_hi); 2203 break; 2204 case lir_sub: 2205 __ subptr(lreg_lo, c_lo); 2206 __ sbbl(lreg_hi, c_hi); 2207 break; 2208 default: 2209 ShouldNotReachHere(); 2210 } 2211 #endif // _LP64 2212 2213 } else { 2214 ShouldNotReachHere(); 2215 } 2216 2217 } else if (left->is_single_xmm()) { 2218 assert(left == dest, "left and dest must be equal"); 2219 XMMRegister lreg = left->as_xmm_float_reg(); 2220 2221 if (right->is_single_xmm()) { 2222 XMMRegister rreg = right->as_xmm_float_reg(); 2223 switch (code) { 2224 case lir_add: __ addss(lreg, rreg); break; 2225 case lir_sub: __ subss(lreg, rreg); break; 2226 case lir_mul_strictfp: // fall through 2227 case lir_mul: __ mulss(lreg, rreg); break; 2228 case lir_div_strictfp: // fall through 2229 case lir_div: __ divss(lreg, rreg); break; 2230 default: ShouldNotReachHere(); 2231 } 2232 } else { 2233 Address raddr; 2234 if (right->is_single_stack()) { 2235 raddr = frame_map()->address_for_slot(right->single_stack_ix()); 2236 } else if (right->is_constant()) { 2237 // hack for now 2238 raddr = __ as_Address(InternalAddress(float_constant(right->as_jfloat()))); 2239 } else { 2240 ShouldNotReachHere(); 2241 } 2242 switch (code) { 2243 case lir_add: __ addss(lreg, raddr); break; 2244 case lir_sub: __ subss(lreg, raddr); break; 2245 case lir_mul_strictfp: // fall through 2246 case lir_mul: __ mulss(lreg, raddr); break; 2247 case lir_div_strictfp: // fall through 2248 case lir_div: __ divss(lreg, raddr); break; 2249 default: ShouldNotReachHere(); 2250 } 2251 } 2252 2253 } else if (left->is_double_xmm()) { 2254 assert(left == dest, "left and dest must be equal"); 2255 2256 XMMRegister lreg = left->as_xmm_double_reg(); 2257 if (right->is_double_xmm()) { 2258 XMMRegister rreg = right->as_xmm_double_reg(); 2259 switch (code) { 2260 case lir_add: __ addsd(lreg, rreg); break; 2261 case lir_sub: __ subsd(lreg, rreg); break; 2262 case lir_mul_strictfp: // fall through 2263 case lir_mul: __ mulsd(lreg, rreg); break; 2264 case lir_div_strictfp: // fall through 2265 case lir_div: __ divsd(lreg, rreg); break; 2266 default: ShouldNotReachHere(); 2267 } 2268 } else { 2269 Address raddr; 2270 if (right->is_double_stack()) { 2271 raddr = frame_map()->address_for_slot(right->double_stack_ix()); 2272 } else if (right->is_constant()) { 2273 // hack for now 2274 raddr = __ as_Address(InternalAddress(double_constant(right->as_jdouble()))); 2275 } else { 2276 ShouldNotReachHere(); 2277 } 2278 switch (code) { 2279 case lir_add: __ addsd(lreg, raddr); break; 2280 case lir_sub: __ subsd(lreg, raddr); break; 2281 case lir_mul_strictfp: // fall through 2282 case lir_mul: __ mulsd(lreg, raddr); break; 2283 case lir_div_strictfp: // fall through 2284 case lir_div: __ divsd(lreg, raddr); break; 2285 default: ShouldNotReachHere(); 2286 } 2287 } 2288 2289 } else if (left->is_single_fpu()) { 2290 assert(dest->is_single_fpu(), "fpu stack allocation required"); 2291 2292 if (right->is_single_fpu()) { 2293 arith_fpu_implementation(code, left->fpu_regnr(), right->fpu_regnr(), dest->fpu_regnr(), pop_fpu_stack); 2294 2295 } else { 2296 assert(left->fpu_regnr() == 0, "left must be on TOS"); 2297 assert(dest->fpu_regnr() == 0, "dest must be on TOS"); 2298 2299 Address raddr; 2300 if (right->is_single_stack()) { 2301 raddr = frame_map()->address_for_slot(right->single_stack_ix()); 2302 } else if (right->is_constant()) { 2303 address const_addr = float_constant(right->as_jfloat()); 2304 assert(const_addr != NULL, "incorrect float/double constant maintainance"); 2305 // hack for now 2306 raddr = __ as_Address(InternalAddress(const_addr)); 2307 } else { 2308 ShouldNotReachHere(); 2309 } 2310 2311 switch (code) { 2312 case lir_add: __ fadd_s(raddr); break; 2313 case lir_sub: __ fsub_s(raddr); break; 2314 case lir_mul_strictfp: // fall through 2315 case lir_mul: __ fmul_s(raddr); break; 2316 case lir_div_strictfp: // fall through 2317 case lir_div: __ fdiv_s(raddr); break; 2318 default: ShouldNotReachHere(); 2319 } 2320 } 2321 2322 } else if (left->is_double_fpu()) { 2323 assert(dest->is_double_fpu(), "fpu stack allocation required"); 2324 2325 if (code == lir_mul_strictfp || code == lir_div_strictfp) { 2326 // Double values require special handling for strictfp mul/div on x86 2327 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); 2328 __ fmulp(left->fpu_regnrLo() + 1); 2329 } 2330 2331 if (right->is_double_fpu()) { 2332 arith_fpu_implementation(code, left->fpu_regnrLo(), right->fpu_regnrLo(), dest->fpu_regnrLo(), pop_fpu_stack); 2333 2334 } else { 2335 assert(left->fpu_regnrLo() == 0, "left must be on TOS"); 2336 assert(dest->fpu_regnrLo() == 0, "dest must be on TOS"); 2337 2338 Address raddr; 2339 if (right->is_double_stack()) { 2340 raddr = frame_map()->address_for_slot(right->double_stack_ix()); 2341 } else if (right->is_constant()) { 2342 // hack for now 2343 raddr = __ as_Address(InternalAddress(double_constant(right->as_jdouble()))); 2344 } else { 2345 ShouldNotReachHere(); 2346 } 2347 2348 switch (code) { 2349 case lir_add: __ fadd_d(raddr); break; 2350 case lir_sub: __ fsub_d(raddr); break; 2351 case lir_mul_strictfp: // fall through 2352 case lir_mul: __ fmul_d(raddr); break; 2353 case lir_div_strictfp: // fall through 2354 case lir_div: __ fdiv_d(raddr); break; 2355 default: ShouldNotReachHere(); 2356 } 2357 } 2358 2359 if (code == lir_mul_strictfp || code == lir_div_strictfp) { 2360 // Double values require special handling for strictfp mul/div on x86 2361 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); 2362 __ fmulp(dest->fpu_regnrLo() + 1); 2363 } 2364 2365 } else if (left->is_single_stack() || left->is_address()) { 2366 assert(left == dest, "left and dest must be equal"); 2367 2368 Address laddr; 2369 if (left->is_single_stack()) { 2370 laddr = frame_map()->address_for_slot(left->single_stack_ix()); 2371 } else if (left->is_address()) { 2372 laddr = as_Address(left->as_address_ptr()); 2373 } else { 2374 ShouldNotReachHere(); 2375 } 2376 2377 if (right->is_single_cpu()) { 2378 Register rreg = right->as_register(); 2379 switch (code) { 2380 case lir_add: __ addl(laddr, rreg); break; 2381 case lir_sub: __ subl(laddr, rreg); break; 2382 default: ShouldNotReachHere(); 2383 } 2384 } else if (right->is_constant()) { 2385 jint c = right->as_constant_ptr()->as_jint(); 2386 switch (code) { 2387 case lir_add: { 2388 __ incrementl(laddr, c); 2389 break; 2390 } 2391 case lir_sub: { 2392 __ decrementl(laddr, c); 2393 break; 2394 } 2395 default: ShouldNotReachHere(); 2396 } 2397 } else { 2398 ShouldNotReachHere(); 2399 } 2400 2401 } else { 2402 ShouldNotReachHere(); 2403 } 2404 } 2405 2406 void LIR_Assembler::arith_fpu_implementation(LIR_Code code, int left_index, int right_index, int dest_index, bool pop_fpu_stack) { 2407 assert(pop_fpu_stack || (left_index == dest_index || right_index == dest_index), "invalid LIR"); 2408 assert(!pop_fpu_stack || (left_index - 1 == dest_index || right_index - 1 == dest_index), "invalid LIR"); 2409 assert(left_index == 0 || right_index == 0, "either must be on top of stack"); 2410 2411 bool left_is_tos = (left_index == 0); 2412 bool dest_is_tos = (dest_index == 0); 2413 int non_tos_index = (left_is_tos ? right_index : left_index); 2414 2415 switch (code) { 2416 case lir_add: 2417 if (pop_fpu_stack) __ faddp(non_tos_index); 2418 else if (dest_is_tos) __ fadd (non_tos_index); 2419 else __ fadda(non_tos_index); 2420 break; 2421 2422 case lir_sub: 2423 if (left_is_tos) { 2424 if (pop_fpu_stack) __ fsubrp(non_tos_index); 2425 else if (dest_is_tos) __ fsub (non_tos_index); 2426 else __ fsubra(non_tos_index); 2427 } else { 2428 if (pop_fpu_stack) __ fsubp (non_tos_index); 2429 else if (dest_is_tos) __ fsubr (non_tos_index); 2430 else __ fsuba (non_tos_index); 2431 } 2432 break; 2433 2434 case lir_mul_strictfp: // fall through 2435 case lir_mul: 2436 if (pop_fpu_stack) __ fmulp(non_tos_index); 2437 else if (dest_is_tos) __ fmul (non_tos_index); 2438 else __ fmula(non_tos_index); 2439 break; 2440 2441 case lir_div_strictfp: // fall through 2442 case lir_div: 2443 if (left_is_tos) { 2444 if (pop_fpu_stack) __ fdivrp(non_tos_index); 2445 else if (dest_is_tos) __ fdiv (non_tos_index); 2446 else __ fdivra(non_tos_index); 2447 } else { 2448 if (pop_fpu_stack) __ fdivp (non_tos_index); 2449 else if (dest_is_tos) __ fdivr (non_tos_index); 2450 else __ fdiva (non_tos_index); 2451 } 2452 break; 2453 2454 case lir_rem: 2455 assert(left_is_tos && dest_is_tos && right_index == 1, "must be guaranteed by FPU stack allocation"); 2456 __ fremr(noreg); 2457 break; 2458 2459 default: 2460 ShouldNotReachHere(); 2461 } 2462 } 2463 2464 2465 void LIR_Assembler::intrinsic_op(LIR_Code code, LIR_Opr value, LIR_Opr unused, LIR_Opr dest, LIR_Op* op) { 2466 if (value->is_double_xmm()) { 2467 switch(code) { 2468 case lir_abs : 2469 { 2470 if (dest->as_xmm_double_reg() != value->as_xmm_double_reg()) { 2471 __ movdbl(dest->as_xmm_double_reg(), value->as_xmm_double_reg()); 2472 } 2473 __ andpd(dest->as_xmm_double_reg(), 2474 ExternalAddress((address)double_signmask_pool)); 2475 } 2476 break; 2477 2478 case lir_sqrt: __ sqrtsd(dest->as_xmm_double_reg(), value->as_xmm_double_reg()); break; 2479 // all other intrinsics are not available in the SSE instruction set, so FPU is used 2480 default : ShouldNotReachHere(); 2481 } 2482 2483 } else if (value->is_double_fpu()) { 2484 assert(value->fpu_regnrLo() == 0 && dest->fpu_regnrLo() == 0, "both must be on TOS"); 2485 switch(code) { 2486 case lir_log : __ flog() ; break; 2487 case lir_log10 : __ flog10() ; break; 2488 case lir_abs : __ fabs() ; break; 2489 case lir_sqrt : __ fsqrt(); break; 2490 case lir_sin : 2491 // Should consider not saving rbx, if not necessary 2492 __ trigfunc('s', op->as_Op2()->fpu_stack_size()); 2493 break; 2494 case lir_cos : 2495 // Should consider not saving rbx, if not necessary 2496 assert(op->as_Op2()->fpu_stack_size() <= 6, "sin and cos need two free stack slots"); 2497 __ trigfunc('c', op->as_Op2()->fpu_stack_size()); 2498 break; 2499 case lir_tan : 2500 // Should consider not saving rbx, if not necessary 2501 __ trigfunc('t', op->as_Op2()->fpu_stack_size()); 2502 break; 2503 default : ShouldNotReachHere(); 2504 } 2505 } else { 2506 Unimplemented(); 2507 } 2508 } 2509 2510 void LIR_Assembler::logic_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst) { 2511 // assert(left->destroys_register(), "check"); 2512 if (left->is_single_cpu()) { 2513 Register reg = left->as_register(); 2514 if (right->is_constant()) { 2515 int val = right->as_constant_ptr()->as_jint(); 2516 switch (code) { 2517 case lir_logic_and: __ andl (reg, val); break; 2518 case lir_logic_or: __ orl (reg, val); break; 2519 case lir_logic_xor: __ xorl (reg, val); break; 2520 default: ShouldNotReachHere(); 2521 } 2522 } else if (right->is_stack()) { 2523 // added support for stack operands 2524 Address raddr = frame_map()->address_for_slot(right->single_stack_ix()); 2525 switch (code) { 2526 case lir_logic_and: __ andl (reg, raddr); break; 2527 case lir_logic_or: __ orl (reg, raddr); break; 2528 case lir_logic_xor: __ xorl (reg, raddr); break; 2529 default: ShouldNotReachHere(); 2530 } 2531 } else { 2532 Register rright = right->as_register(); 2533 switch (code) { 2534 case lir_logic_and: __ andptr (reg, rright); break; 2535 case lir_logic_or : __ orptr (reg, rright); break; 2536 case lir_logic_xor: __ xorptr (reg, rright); break; 2537 default: ShouldNotReachHere(); 2538 } 2539 } 2540 move_regs(reg, dst->as_register()); 2541 } else { 2542 Register l_lo = left->as_register_lo(); 2543 Register l_hi = left->as_register_hi(); 2544 if (right->is_constant()) { 2545 #ifdef _LP64 2546 __ mov64(rscratch1, right->as_constant_ptr()->as_jlong()); 2547 switch (code) { 2548 case lir_logic_and: 2549 __ andq(l_lo, rscratch1); 2550 break; 2551 case lir_logic_or: 2552 __ orq(l_lo, rscratch1); 2553 break; 2554 case lir_logic_xor: 2555 __ xorq(l_lo, rscratch1); 2556 break; 2557 default: ShouldNotReachHere(); 2558 } 2559 #else 2560 int r_lo = right->as_constant_ptr()->as_jint_lo(); 2561 int r_hi = right->as_constant_ptr()->as_jint_hi(); 2562 switch (code) { 2563 case lir_logic_and: 2564 __ andl(l_lo, r_lo); 2565 __ andl(l_hi, r_hi); 2566 break; 2567 case lir_logic_or: 2568 __ orl(l_lo, r_lo); 2569 __ orl(l_hi, r_hi); 2570 break; 2571 case lir_logic_xor: 2572 __ xorl(l_lo, r_lo); 2573 __ xorl(l_hi, r_hi); 2574 break; 2575 default: ShouldNotReachHere(); 2576 } 2577 #endif // _LP64 2578 } else { 2579 #ifdef _LP64 2580 Register r_lo; 2581 if (right->type() == T_OBJECT || right->type() == T_ARRAY) { 2582 r_lo = right->as_register(); 2583 } else { 2584 r_lo = right->as_register_lo(); 2585 } 2586 #else 2587 Register r_lo = right->as_register_lo(); 2588 Register r_hi = right->as_register_hi(); 2589 assert(l_lo != r_hi, "overwriting registers"); 2590 #endif 2591 switch (code) { 2592 case lir_logic_and: 2593 __ andptr(l_lo, r_lo); 2594 NOT_LP64(__ andptr(l_hi, r_hi);) 2595 break; 2596 case lir_logic_or: 2597 __ orptr(l_lo, r_lo); 2598 NOT_LP64(__ orptr(l_hi, r_hi);) 2599 break; 2600 case lir_logic_xor: 2601 __ xorptr(l_lo, r_lo); 2602 NOT_LP64(__ xorptr(l_hi, r_hi);) 2603 break; 2604 default: ShouldNotReachHere(); 2605 } 2606 } 2607 2608 Register dst_lo = dst->as_register_lo(); 2609 Register dst_hi = dst->as_register_hi(); 2610 2611 #ifdef _LP64 2612 move_regs(l_lo, dst_lo); 2613 #else 2614 if (dst_lo == l_hi) { 2615 assert(dst_hi != l_lo, "overwriting registers"); 2616 move_regs(l_hi, dst_hi); 2617 move_regs(l_lo, dst_lo); 2618 } else { 2619 assert(dst_lo != l_hi, "overwriting registers"); 2620 move_regs(l_lo, dst_lo); 2621 move_regs(l_hi, dst_hi); 2622 } 2623 #endif // _LP64 2624 } 2625 } 2626 2627 2628 // we assume that rax, and rdx can be overwritten 2629 void LIR_Assembler::arithmetic_idiv(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr temp, LIR_Opr result, CodeEmitInfo* info) { 2630 2631 assert(left->is_single_cpu(), "left must be register"); 2632 assert(right->is_single_cpu() || right->is_constant(), "right must be register or constant"); 2633 assert(result->is_single_cpu(), "result must be register"); 2634 2635 // assert(left->destroys_register(), "check"); 2636 // assert(right->destroys_register(), "check"); 2637 2638 Register lreg = left->as_register(); 2639 Register dreg = result->as_register(); 2640 2641 if (right->is_constant()) { 2642 int divisor = right->as_constant_ptr()->as_jint(); 2643 assert(divisor > 0 && is_power_of_2(divisor), "must be"); 2644 if (code == lir_idiv) { 2645 assert(lreg == rax, "must be rax,"); 2646 assert(temp->as_register() == rdx, "tmp register must be rdx"); 2647 __ cdql(); // sign extend into rdx:rax 2648 if (divisor == 2) { 2649 __ subl(lreg, rdx); 2650 } else { 2651 __ andl(rdx, divisor - 1); 2652 __ addl(lreg, rdx); 2653 } 2654 __ sarl(lreg, log2_intptr(divisor)); 2655 move_regs(lreg, dreg); 2656 } else if (code == lir_irem) { 2657 Label done; 2658 __ mov(dreg, lreg); 2659 __ andl(dreg, 0x80000000 | (divisor - 1)); 2660 __ jcc(Assembler::positive, done); 2661 __ decrement(dreg); 2662 __ orl(dreg, ~(divisor - 1)); 2663 __ increment(dreg); 2664 __ bind(done); 2665 } else { 2666 ShouldNotReachHere(); 2667 } 2668 } else { 2669 Register rreg = right->as_register(); 2670 assert(lreg == rax, "left register must be rax,"); 2671 assert(rreg != rdx, "right register must not be rdx"); 2672 assert(temp->as_register() == rdx, "tmp register must be rdx"); 2673 2674 move_regs(lreg, rax); 2675 2676 int idivl_offset = __ corrected_idivl(rreg); 2677 add_debug_info_for_div0(idivl_offset, info); 2678 if (code == lir_irem) { 2679 move_regs(rdx, dreg); // result is in rdx 2680 } else { 2681 move_regs(rax, dreg); 2682 } 2683 } 2684 } 2685 2686 2687 void LIR_Assembler::comp_op(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Op2* op) { 2688 if (opr1->is_single_cpu()) { 2689 Register reg1 = opr1->as_register(); 2690 if (opr2->is_single_cpu()) { 2691 // cpu register - cpu register 2692 if (opr1->type() == T_OBJECT || opr1->type() == T_ARRAY) { 2693 __ cmpptr(reg1, opr2->as_register()); 2694 } else { 2695 assert(opr2->type() != T_OBJECT && opr2->type() != T_ARRAY, "cmp int, oop?"); 2696 __ cmpl(reg1, opr2->as_register()); 2697 } 2698 } else if (opr2->is_stack()) { 2699 // cpu register - stack 2700 if (opr1->type() == T_OBJECT || opr1->type() == T_ARRAY) { 2701 __ cmpptr(reg1, frame_map()->address_for_slot(opr2->single_stack_ix())); 2702 } else { 2703 __ cmpl(reg1, frame_map()->address_for_slot(opr2->single_stack_ix())); 2704 } 2705 } else if (opr2->is_constant()) { 2706 // cpu register - constant 2707 LIR_Const* c = opr2->as_constant_ptr(); 2708 if (c->type() == T_INT) { 2709 __ cmpl(reg1, c->as_jint()); 2710 } else if (c->type() == T_OBJECT || c->type() == T_ARRAY) { 2711 // In 64bit oops are single register 2712 jobject o = c->as_jobject(); 2713 if (o == NULL) { 2714 __ cmpptr(reg1, (int32_t)NULL_WORD); 2715 } else { 2716 #ifdef _LP64 2717 __ movoop(rscratch1, o); 2718 __ cmpptr(reg1, rscratch1); 2719 #else 2720 __ cmpoop(reg1, c->as_jobject()); 2721 #endif // _LP64 2722 } 2723 } else { 2724 ShouldNotReachHere(); 2725 } 2726 // cpu register - address 2727 } else if (opr2->is_address()) { 2728 if (op->info() != NULL) { 2729 add_debug_info_for_null_check_here(op->info()); 2730 } 2731 __ cmpl(reg1, as_Address(opr2->as_address_ptr())); 2732 } else { 2733 ShouldNotReachHere(); 2734 } 2735 2736 } else if(opr1->is_double_cpu()) { 2737 Register xlo = opr1->as_register_lo(); 2738 Register xhi = opr1->as_register_hi(); 2739 if (opr2->is_double_cpu()) { 2740 #ifdef _LP64 2741 __ cmpptr(xlo, opr2->as_register_lo()); 2742 #else 2743 // cpu register - cpu register 2744 Register ylo = opr2->as_register_lo(); 2745 Register yhi = opr2->as_register_hi(); 2746 __ subl(xlo, ylo); 2747 __ sbbl(xhi, yhi); 2748 if (condition == lir_cond_equal || condition == lir_cond_notEqual) { 2749 __ orl(xhi, xlo); 2750 } 2751 #endif // _LP64 2752 } else if (opr2->is_constant()) { 2753 // cpu register - constant 0 2754 assert(opr2->as_jlong() == (jlong)0, "only handles zero"); 2755 #ifdef _LP64 2756 __ cmpptr(xlo, (int32_t)opr2->as_jlong()); 2757 #else 2758 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "only handles equals case"); 2759 __ orl(xhi, xlo); 2760 #endif // _LP64 2761 } else { 2762 ShouldNotReachHere(); 2763 } 2764 2765 } else if (opr1->is_single_xmm()) { 2766 XMMRegister reg1 = opr1->as_xmm_float_reg(); 2767 if (opr2->is_single_xmm()) { 2768 // xmm register - xmm register 2769 __ ucomiss(reg1, opr2->as_xmm_float_reg()); 2770 } else if (opr2->is_stack()) { 2771 // xmm register - stack 2772 __ ucomiss(reg1, frame_map()->address_for_slot(opr2->single_stack_ix())); 2773 } else if (opr2->is_constant()) { 2774 // xmm register - constant 2775 __ ucomiss(reg1, InternalAddress(float_constant(opr2->as_jfloat()))); 2776 } else if (opr2->is_address()) { 2777 // xmm register - address 2778 if (op->info() != NULL) { 2779 add_debug_info_for_null_check_here(op->info()); 2780 } 2781 __ ucomiss(reg1, as_Address(opr2->as_address_ptr())); 2782 } else { 2783 ShouldNotReachHere(); 2784 } 2785 2786 } else if (opr1->is_double_xmm()) { 2787 XMMRegister reg1 = opr1->as_xmm_double_reg(); 2788 if (opr2->is_double_xmm()) { 2789 // xmm register - xmm register 2790 __ ucomisd(reg1, opr2->as_xmm_double_reg()); 2791 } else if (opr2->is_stack()) { 2792 // xmm register - stack 2793 __ ucomisd(reg1, frame_map()->address_for_slot(opr2->double_stack_ix())); 2794 } else if (opr2->is_constant()) { 2795 // xmm register - constant 2796 __ ucomisd(reg1, InternalAddress(double_constant(opr2->as_jdouble()))); 2797 } else if (opr2->is_address()) { 2798 // xmm register - address 2799 if (op->info() != NULL) { 2800 add_debug_info_for_null_check_here(op->info()); 2801 } 2802 __ ucomisd(reg1, as_Address(opr2->pointer()->as_address())); 2803 } else { 2804 ShouldNotReachHere(); 2805 } 2806 2807 } else if(opr1->is_single_fpu() || opr1->is_double_fpu()) { 2808 assert(opr1->is_fpu_register() && opr1->fpu() == 0, "currently left-hand side must be on TOS (relax this restriction)"); 2809 assert(opr2->is_fpu_register(), "both must be registers"); 2810 __ fcmp(noreg, opr2->fpu(), op->fpu_pop_count() > 0, op->fpu_pop_count() > 1); 2811 2812 } else if (opr1->is_address() && opr2->is_constant()) { 2813 LIR_Const* c = opr2->as_constant_ptr(); 2814 #ifdef _LP64 2815 if (c->type() == T_OBJECT || c->type() == T_ARRAY) { 2816 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "need to reverse"); 2817 __ movoop(rscratch1, c->as_jobject()); 2818 } 2819 #endif // LP64 2820 if (op->info() != NULL) { 2821 add_debug_info_for_null_check_here(op->info()); 2822 } 2823 // special case: address - constant 2824 LIR_Address* addr = opr1->as_address_ptr(); 2825 if (c->type() == T_INT) { 2826 __ cmpl(as_Address(addr), c->as_jint()); 2827 } else if (c->type() == T_OBJECT || c->type() == T_ARRAY) { 2828 #ifdef _LP64 2829 // %%% Make this explode if addr isn't reachable until we figure out a 2830 // better strategy by giving noreg as the temp for as_Address 2831 __ cmpptr(rscratch1, as_Address(addr, noreg)); 2832 #else 2833 __ cmpoop(as_Address(addr), c->as_jobject()); 2834 #endif // _LP64 2835 } else { 2836 ShouldNotReachHere(); 2837 } 2838 2839 } else { 2840 ShouldNotReachHere(); 2841 } 2842 } 2843 2844 void LIR_Assembler::comp_fl2i(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst, LIR_Op2* op) { 2845 if (code == lir_cmp_fd2i || code == lir_ucmp_fd2i) { 2846 if (left->is_single_xmm()) { 2847 assert(right->is_single_xmm(), "must match"); 2848 __ cmpss2int(left->as_xmm_float_reg(), right->as_xmm_float_reg(), dst->as_register(), code == lir_ucmp_fd2i); 2849 } else if (left->is_double_xmm()) { 2850 assert(right->is_double_xmm(), "must match"); 2851 __ cmpsd2int(left->as_xmm_double_reg(), right->as_xmm_double_reg(), dst->as_register(), code == lir_ucmp_fd2i); 2852 2853 } else { 2854 assert(left->is_single_fpu() || left->is_double_fpu(), "must be"); 2855 assert(right->is_single_fpu() || right->is_double_fpu(), "must match"); 2856 2857 assert(left->fpu() == 0, "left must be on TOS"); 2858 __ fcmp2int(dst->as_register(), code == lir_ucmp_fd2i, right->fpu(), 2859 op->fpu_pop_count() > 0, op->fpu_pop_count() > 1); 2860 } 2861 } else { 2862 assert(code == lir_cmp_l2i, "check"); 2863 #ifdef _LP64 2864 Label done; 2865 Register dest = dst->as_register(); 2866 __ cmpptr(left->as_register_lo(), right->as_register_lo()); 2867 __ movl(dest, -1); 2868 __ jccb(Assembler::less, done); 2869 __ set_byte_if_not_zero(dest); 2870 __ movzbl(dest, dest); 2871 __ bind(done); 2872 #else 2873 __ lcmp2int(left->as_register_hi(), 2874 left->as_register_lo(), 2875 right->as_register_hi(), 2876 right->as_register_lo()); 2877 move_regs(left->as_register_hi(), dst->as_register()); 2878 #endif // _LP64 2879 } 2880 } 2881 2882 2883 void LIR_Assembler::align_call(LIR_Code code) { 2884 if (os::is_MP()) { 2885 // make sure that the displacement word of the call ends up word aligned 2886 int offset = __ offset(); 2887 switch (code) { 2888 case lir_static_call: 2889 case lir_optvirtual_call: 2890 case lir_dynamic_call: 2891 offset += NativeCall::displacement_offset; 2892 break; 2893 case lir_icvirtual_call: 2894 offset += NativeCall::displacement_offset + NativeMovConstReg::instruction_size; 2895 break; 2896 case lir_virtual_call: // currently, sparc-specific for niagara 2897 default: ShouldNotReachHere(); 2898 } 2899 while (offset++ % BytesPerWord != 0) { 2900 __ nop(); 2901 } 2902 } 2903 } 2904 2905 2906 void LIR_Assembler::call(LIR_OpJavaCall* op, relocInfo::relocType rtype) { 2907 assert(!os::is_MP() || (__ offset() + NativeCall::displacement_offset) % BytesPerWord == 0, 2908 "must be aligned"); 2909 __ call(AddressLiteral(op->addr(), rtype)); 2910 add_call_info(code_offset(), op->info()); 2911 } 2912 2913 2914 void LIR_Assembler::ic_call(LIR_OpJavaCall* op) { 2915 RelocationHolder rh = virtual_call_Relocation::spec(pc()); 2916 __ movoop(IC_Klass, (jobject)Universe::non_oop_word()); 2917 assert(!os::is_MP() || 2918 (__ offset() + NativeCall::displacement_offset) % BytesPerWord == 0, 2919 "must be aligned"); 2920 __ call(AddressLiteral(op->addr(), rh)); 2921 add_call_info(code_offset(), op->info()); 2922 } 2923 2924 2925 /* Currently, vtable-dispatch is only enabled for sparc platforms */ 2926 void LIR_Assembler::vtable_call(LIR_OpJavaCall* op) { 2927 ShouldNotReachHere(); 2928 } 2929 2930 2931 void LIR_Assembler::emit_static_call_stub() { 2932 address call_pc = __ pc(); 2933 address stub = __ start_a_stub(call_stub_size); 2934 if (stub == NULL) { 2935 bailout("static call stub overflow"); 2936 return; 2937 } 2938 2939 int start = __ offset(); 2940 if (os::is_MP()) { 2941 // make sure that the displacement word of the call ends up word aligned 2942 int offset = __ offset() + NativeMovConstReg::instruction_size + NativeCall::displacement_offset; 2943 while (offset++ % BytesPerWord != 0) { 2944 __ nop(); 2945 } 2946 } 2947 __ relocate(static_stub_Relocation::spec(call_pc)); 2948 __ movoop(rbx, (jobject)NULL); 2949 // must be set to -1 at code generation time 2950 assert(!os::is_MP() || ((__ offset() + 1) % BytesPerWord) == 0, "must be aligned on MP"); 2951 // On 64bit this will die since it will take a movq & jmp, must be only a jmp 2952 __ jump(RuntimeAddress(__ pc())); 2953 2954 assert(__ offset() - start <= call_stub_size, "stub too big"); 2955 __ end_a_stub(); 2956 } 2957 2958 2959 void LIR_Assembler::throw_op(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) { 2960 assert(exceptionOop->as_register() == rax, "must match"); 2961 assert(exceptionPC->as_register() == rdx, "must match"); 2962 2963 // exception object is not added to oop map by LinearScan 2964 // (LinearScan assumes that no oops are in fixed registers) 2965 info->add_register_oop(exceptionOop); 2966 Runtime1::StubID unwind_id; 2967 2968 // get current pc information 2969 // pc is only needed if the method has an exception handler, the unwind code does not need it. 2970 int pc_for_athrow_offset = __ offset(); 2971 InternalAddress pc_for_athrow(__ pc()); 2972 __ lea(exceptionPC->as_register(), pc_for_athrow); 2973 add_call_info(pc_for_athrow_offset, info); // for exception handler 2974 2975 __ verify_not_null_oop(rax); 2976 // search an exception handler (rax: exception oop, rdx: throwing pc) 2977 if (compilation()->has_fpu_code()) { 2978 unwind_id = Runtime1::handle_exception_id; 2979 } else { 2980 unwind_id = Runtime1::handle_exception_nofpu_id; 2981 } 2982 __ call(RuntimeAddress(Runtime1::entry_for(unwind_id))); 2983 2984 // enough room for two byte trap 2985 __ nop(); 2986 } 2987 2988 2989 void LIR_Assembler::unwind_op(LIR_Opr exceptionOop) { 2990 assert(exceptionOop->as_register() == rax, "must match"); 2991 2992 __ jmp(_unwind_handler_entry); 2993 } 2994 2995 2996 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, LIR_Opr count, LIR_Opr dest, LIR_Opr tmp) { 2997 2998 // optimized version for linear scan: 2999 // * count must be already in ECX (guaranteed by LinearScan) 3000 // * left and dest must be equal 3001 // * tmp must be unused 3002 assert(count->as_register() == SHIFT_count, "count must be in ECX"); 3003 assert(left == dest, "left and dest must be equal"); 3004 assert(tmp->is_illegal(), "wasting a register if tmp is allocated"); 3005 3006 if (left->is_single_cpu()) { 3007 Register value = left->as_register(); 3008 assert(value != SHIFT_count, "left cannot be ECX"); 3009 3010 switch (code) { 3011 case lir_shl: __ shll(value); break; 3012 case lir_shr: __ sarl(value); break; 3013 case lir_ushr: __ shrl(value); break; 3014 default: ShouldNotReachHere(); 3015 } 3016 } else if (left->is_double_cpu()) { 3017 Register lo = left->as_register_lo(); 3018 Register hi = left->as_register_hi(); 3019 assert(lo != SHIFT_count && hi != SHIFT_count, "left cannot be ECX"); 3020 #ifdef _LP64 3021 switch (code) { 3022 case lir_shl: __ shlptr(lo); break; 3023 case lir_shr: __ sarptr(lo); break; 3024 case lir_ushr: __ shrptr(lo); break; 3025 default: ShouldNotReachHere(); 3026 } 3027 #else 3028 3029 switch (code) { 3030 case lir_shl: __ lshl(hi, lo); break; 3031 case lir_shr: __ lshr(hi, lo, true); break; 3032 case lir_ushr: __ lshr(hi, lo, false); break; 3033 default: ShouldNotReachHere(); 3034 } 3035 #endif // LP64 3036 } else { 3037 ShouldNotReachHere(); 3038 } 3039 } 3040 3041 3042 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, jint count, LIR_Opr dest) { 3043 if (dest->is_single_cpu()) { 3044 // first move left into dest so that left is not destroyed by the shift 3045 Register value = dest->as_register(); 3046 count = count & 0x1F; // Java spec 3047 3048 move_regs(left->as_register(), value); 3049 switch (code) { 3050 case lir_shl: __ shll(value, count); break; 3051 case lir_shr: __ sarl(value, count); break; 3052 case lir_ushr: __ shrl(value, count); break; 3053 default: ShouldNotReachHere(); 3054 } 3055 } else if (dest->is_double_cpu()) { 3056 #ifndef _LP64 3057 Unimplemented(); 3058 #else 3059 // first move left into dest so that left is not destroyed by the shift 3060 Register value = dest->as_register_lo(); 3061 count = count & 0x1F; // Java spec 3062 3063 move_regs(left->as_register_lo(), value); 3064 switch (code) { 3065 case lir_shl: __ shlptr(value, count); break; 3066 case lir_shr: __ sarptr(value, count); break; 3067 case lir_ushr: __ shrptr(value, count); break; 3068 default: ShouldNotReachHere(); 3069 } 3070 #endif // _LP64 3071 } else { 3072 ShouldNotReachHere(); 3073 } 3074 } 3075 3076 3077 void LIR_Assembler::store_parameter(Register r, int offset_from_rsp_in_words) { 3078 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp"); 3079 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord; 3080 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset"); 3081 __ movptr (Address(rsp, offset_from_rsp_in_bytes), r); 3082 } 3083 3084 3085 void LIR_Assembler::store_parameter(jint c, int offset_from_rsp_in_words) { 3086 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp"); 3087 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord; 3088 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset"); 3089 __ movptr (Address(rsp, offset_from_rsp_in_bytes), c); 3090 } 3091 3092 3093 void LIR_Assembler::store_parameter(jobject o, int offset_from_rsp_in_words) { 3094 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp"); 3095 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord; 3096 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset"); 3097 __ movoop (Address(rsp, offset_from_rsp_in_bytes), o); 3098 } 3099 3100 3101 // This code replaces a call to arraycopy; no exception may 3102 // be thrown in this code, they must be thrown in the System.arraycopy 3103 // activation frame; we could save some checks if this would not be the case 3104 void LIR_Assembler::emit_arraycopy(LIR_OpArrayCopy* op) { 3105 ciArrayKlass* default_type = op->expected_type(); 3106 Register src = op->src()->as_register(); 3107 Register dst = op->dst()->as_register(); 3108 Register src_pos = op->src_pos()->as_register(); 3109 Register dst_pos = op->dst_pos()->as_register(); 3110 Register length = op->length()->as_register(); 3111 Register tmp = op->tmp()->as_register(); 3112 3113 CodeStub* stub = op->stub(); 3114 int flags = op->flags(); 3115 BasicType basic_type = default_type != NULL ? default_type->element_type()->basic_type() : T_ILLEGAL; 3116 if (basic_type == T_ARRAY) basic_type = T_OBJECT; 3117 3118 // if we don't know anything or it's an object array, just go through the generic arraycopy 3119 if (default_type == NULL) { 3120 Label done; 3121 // save outgoing arguments on stack in case call to System.arraycopy is needed 3122 // HACK ALERT. This code used to push the parameters in a hardwired fashion 3123 // for interpreter calling conventions. Now we have to do it in new style conventions. 3124 // For the moment until C1 gets the new register allocator I just force all the 3125 // args to the right place (except the register args) and then on the back side 3126 // reload the register args properly if we go slow path. Yuck 3127 3128 // These are proper for the calling convention 3129 3130 store_parameter(length, 2); 3131 store_parameter(dst_pos, 1); 3132 store_parameter(dst, 0); 3133 3134 // these are just temporary placements until we need to reload 3135 store_parameter(src_pos, 3); 3136 store_parameter(src, 4); 3137 NOT_LP64(assert(src == rcx && src_pos == rdx, "mismatch in calling convention");) 3138 3139 address entry = CAST_FROM_FN_PTR(address, Runtime1::arraycopy); 3140 3141 // pass arguments: may push as this is not a safepoint; SP must be fix at each safepoint 3142 #ifdef _LP64 3143 // The arguments are in java calling convention so we can trivially shift them to C 3144 // convention 3145 assert_different_registers(c_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4); 3146 __ mov(c_rarg0, j_rarg0); 3147 assert_different_registers(c_rarg1, j_rarg2, j_rarg3, j_rarg4); 3148 __ mov(c_rarg1, j_rarg1); 3149 assert_different_registers(c_rarg2, j_rarg3, j_rarg4); 3150 __ mov(c_rarg2, j_rarg2); 3151 assert_different_registers(c_rarg3, j_rarg4); 3152 __ mov(c_rarg3, j_rarg3); 3153 #ifdef _WIN64 3154 // Allocate abi space for args but be sure to keep stack aligned 3155 __ subptr(rsp, 6*wordSize); 3156 store_parameter(j_rarg4, 4); 3157 __ call(RuntimeAddress(entry)); 3158 __ addptr(rsp, 6*wordSize); 3159 #else 3160 __ mov(c_rarg4, j_rarg4); 3161 __ call(RuntimeAddress(entry)); 3162 #endif // _WIN64 3163 #else 3164 __ push(length); 3165 __ push(dst_pos); 3166 __ push(dst); 3167 __ push(src_pos); 3168 __ push(src); 3169 __ call_VM_leaf(entry, 5); // removes pushed parameter from the stack 3170 3171 #endif // _LP64 3172 3173 __ cmpl(rax, 0); 3174 __ jcc(Assembler::equal, *stub->continuation()); 3175 3176 // Reload values from the stack so they are where the stub 3177 // expects them. 3178 __ movptr (dst, Address(rsp, 0*BytesPerWord)); 3179 __ movptr (dst_pos, Address(rsp, 1*BytesPerWord)); 3180 __ movptr (length, Address(rsp, 2*BytesPerWord)); 3181 __ movptr (src_pos, Address(rsp, 3*BytesPerWord)); 3182 __ movptr (src, Address(rsp, 4*BytesPerWord)); 3183 __ jmp(*stub->entry()); 3184 3185 __ bind(*stub->continuation()); 3186 return; 3187 } 3188 3189 assert(default_type != NULL && default_type->is_array_klass() && default_type->is_loaded(), "must be true at this point"); 3190 3191 int elem_size = type2aelembytes(basic_type); 3192 int shift_amount; 3193 Address::ScaleFactor scale; 3194 3195 switch (elem_size) { 3196 case 1 : 3197 shift_amount = 0; 3198 scale = Address::times_1; 3199 break; 3200 case 2 : 3201 shift_amount = 1; 3202 scale = Address::times_2; 3203 break; 3204 case 4 : 3205 shift_amount = 2; 3206 scale = Address::times_4; 3207 break; 3208 case 8 : 3209 shift_amount = 3; 3210 scale = Address::times_8; 3211 break; 3212 default: 3213 ShouldNotReachHere(); 3214 } 3215 3216 Address src_length_addr = Address(src, arrayOopDesc::length_offset_in_bytes()); 3217 Address dst_length_addr = Address(dst, arrayOopDesc::length_offset_in_bytes()); 3218 Address src_klass_addr = Address(src, oopDesc::klass_offset_in_bytes()); 3219 Address dst_klass_addr = Address(dst, oopDesc::klass_offset_in_bytes()); 3220 3221 // length and pos's are all sign extended at this point on 64bit 3222 3223 // test for NULL 3224 if (flags & LIR_OpArrayCopy::src_null_check) { 3225 __ testptr(src, src); 3226 __ jcc(Assembler::zero, *stub->entry()); 3227 } 3228 if (flags & LIR_OpArrayCopy::dst_null_check) { 3229 __ testptr(dst, dst); 3230 __ jcc(Assembler::zero, *stub->entry()); 3231 } 3232 3233 // check if negative 3234 if (flags & LIR_OpArrayCopy::src_pos_positive_check) { 3235 __ testl(src_pos, src_pos); 3236 __ jcc(Assembler::less, *stub->entry()); 3237 } 3238 if (flags & LIR_OpArrayCopy::dst_pos_positive_check) { 3239 __ testl(dst_pos, dst_pos); 3240 __ jcc(Assembler::less, *stub->entry()); 3241 } 3242 if (flags & LIR_OpArrayCopy::length_positive_check) { 3243 __ testl(length, length); 3244 __ jcc(Assembler::less, *stub->entry()); 3245 } 3246 3247 if (flags & LIR_OpArrayCopy::src_range_check) { 3248 __ lea(tmp, Address(src_pos, length, Address::times_1, 0)); 3249 __ cmpl(tmp, src_length_addr); 3250 __ jcc(Assembler::above, *stub->entry()); 3251 } 3252 if (flags & LIR_OpArrayCopy::dst_range_check) { 3253 __ lea(tmp, Address(dst_pos, length, Address::times_1, 0)); 3254 __ cmpl(tmp, dst_length_addr); 3255 __ jcc(Assembler::above, *stub->entry()); 3256 } 3257 3258 if (flags & LIR_OpArrayCopy::type_check) { 3259 if (UseCompressedOops) { 3260 __ movl(tmp, src_klass_addr); 3261 __ cmpl(tmp, dst_klass_addr); 3262 } else { 3263 __ movptr(tmp, src_klass_addr); 3264 __ cmpptr(tmp, dst_klass_addr); 3265 } 3266 __ jcc(Assembler::notEqual, *stub->entry()); 3267 } 3268 3269 #ifdef ASSERT 3270 if (basic_type != T_OBJECT || !(flags & LIR_OpArrayCopy::type_check)) { 3271 // Sanity check the known type with the incoming class. For the 3272 // primitive case the types must match exactly with src.klass and 3273 // dst.klass each exactly matching the default type. For the 3274 // object array case, if no type check is needed then either the 3275 // dst type is exactly the expected type and the src type is a 3276 // subtype which we can't check or src is the same array as dst 3277 // but not necessarily exactly of type default_type. 3278 Label known_ok, halt; 3279 __ movoop(tmp, default_type->constant_encoding()); 3280 #ifdef _LP64 3281 if (UseCompressedOops) { 3282 __ encode_heap_oop(tmp); 3283 } 3284 #endif 3285 3286 if (basic_type != T_OBJECT) { 3287 3288 if (UseCompressedOops) __ cmpl(tmp, dst_klass_addr); 3289 else __ cmpptr(tmp, dst_klass_addr); 3290 __ jcc(Assembler::notEqual, halt); 3291 if (UseCompressedOops) __ cmpl(tmp, src_klass_addr); 3292 else __ cmpptr(tmp, src_klass_addr); 3293 __ jcc(Assembler::equal, known_ok); 3294 } else { 3295 if (UseCompressedOops) __ cmpl(tmp, dst_klass_addr); 3296 else __ cmpptr(tmp, dst_klass_addr); 3297 __ jcc(Assembler::equal, known_ok); 3298 __ cmpptr(src, dst); 3299 __ jcc(Assembler::equal, known_ok); 3300 } 3301 __ bind(halt); 3302 __ stop("incorrect type information in arraycopy"); 3303 __ bind(known_ok); 3304 } 3305 #endif 3306 3307 if (shift_amount > 0 && basic_type != T_OBJECT) { 3308 __ shlptr(length, shift_amount); 3309 } 3310 3311 #ifdef _LP64 3312 assert_different_registers(c_rarg0, dst, dst_pos, length); 3313 __ movl2ptr(src_pos, src_pos); //higher 32bits must be null 3314 __ lea(c_rarg0, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); 3315 assert_different_registers(c_rarg1, length); 3316 __ movl2ptr(dst_pos, dst_pos); //higher 32bits must be null 3317 __ lea(c_rarg1, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); 3318 __ mov(c_rarg2, length); 3319 3320 #else 3321 __ lea(tmp, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); 3322 store_parameter(tmp, 0); 3323 __ lea(tmp, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); 3324 store_parameter(tmp, 1); 3325 store_parameter(length, 2); 3326 #endif // _LP64 3327 if (basic_type == T_OBJECT) { 3328 __ call_VM_leaf(CAST_FROM_FN_PTR(address, Runtime1::oop_arraycopy), 0); 3329 } else { 3330 __ call_VM_leaf(CAST_FROM_FN_PTR(address, Runtime1::primitive_arraycopy), 0); 3331 } 3332 3333 __ bind(*stub->continuation()); 3334 } 3335 3336 3337 void LIR_Assembler::emit_lock(LIR_OpLock* op) { 3338 Register obj = op->obj_opr()->as_register(); // may not be an oop 3339 Register hdr = op->hdr_opr()->as_register(); 3340 Register lock = op->lock_opr()->as_register(); 3341 if (!UseFastLocking) { 3342 __ jmp(*op->stub()->entry()); 3343 } else if (op->code() == lir_lock) { 3344 Register scratch = noreg; 3345 if (UseBiasedLocking) { 3346 scratch = op->scratch_opr()->as_register(); 3347 } 3348 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); 3349 // add debug info for NullPointerException only if one is possible 3350 int null_check_offset = __ lock_object(hdr, obj, lock, scratch, *op->stub()->entry()); 3351 if (op->info() != NULL) { 3352 add_debug_info_for_null_check(null_check_offset, op->info()); 3353 } 3354 // done 3355 } else if (op->code() == lir_unlock) { 3356 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); 3357 __ unlock_object(hdr, obj, lock, *op->stub()->entry()); 3358 } else { 3359 Unimplemented(); 3360 } 3361 __ bind(*op->stub()->continuation()); 3362 } 3363 3364 3365 void LIR_Assembler::emit_profile_call(LIR_OpProfileCall* op) { 3366 ciMethod* method = op->profiled_method(); 3367 int bci = op->profiled_bci(); 3368 3369 // Update counter for all call types 3370 ciMethodData* md = method->method_data_or_null(); 3371 assert(md != NULL, "Sanity"); 3372 ciProfileData* data = md->bci_to_data(bci); 3373 assert(data->is_CounterData(), "need CounterData for calls"); 3374 assert(op->mdo()->is_single_cpu(), "mdo must be allocated"); 3375 Register mdo = op->mdo()->as_register(); 3376 __ movoop(mdo, md->constant_encoding()); 3377 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset())); 3378 Bytecodes::Code bc = method->java_code_at_bci(bci); 3379 // Perform additional virtual call profiling for invokevirtual and 3380 // invokeinterface bytecodes 3381 if ((bc == Bytecodes::_invokevirtual || bc == Bytecodes::_invokeinterface) && 3382 C1ProfileVirtualCalls) { 3383 assert(op->recv()->is_single_cpu(), "recv must be allocated"); 3384 Register recv = op->recv()->as_register(); 3385 assert_different_registers(mdo, recv); 3386 assert(data->is_VirtualCallData(), "need VirtualCallData for virtual calls"); 3387 ciKlass* known_klass = op->known_holder(); 3388 if (C1OptimizeVirtualCallProfiling && known_klass != NULL) { 3389 // We know the type that will be seen at this call site; we can 3390 // statically update the methodDataOop rather than needing to do 3391 // dynamic tests on the receiver type 3392 3393 // NOTE: we should probably put a lock around this search to 3394 // avoid collisions by concurrent compilations 3395 ciVirtualCallData* vc_data = (ciVirtualCallData*) data; 3396 uint i; 3397 for (i = 0; i < VirtualCallData::row_limit(); i++) { 3398 ciKlass* receiver = vc_data->receiver(i); 3399 if (known_klass->equals(receiver)) { 3400 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i))); 3401 __ addptr(data_addr, DataLayout::counter_increment); 3402 return; 3403 } 3404 } 3405 3406 // Receiver type not found in profile data; select an empty slot 3407 3408 // Note that this is less efficient than it should be because it 3409 // always does a write to the receiver part of the 3410 // VirtualCallData rather than just the first time 3411 for (i = 0; i < VirtualCallData::row_limit(); i++) { 3412 ciKlass* receiver = vc_data->receiver(i); 3413 if (receiver == NULL) { 3414 Address recv_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_offset(i))); 3415 __ movoop(recv_addr, known_klass->constant_encoding()); 3416 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i))); 3417 __ addptr(data_addr, DataLayout::counter_increment); 3418 return; 3419 } 3420 } 3421 } else { 3422 __ load_klass(recv, recv); 3423 Label update_done; 3424 type_profile_helper(mdo, md, data, recv, &update_done); 3425 // Receiver did not match any saved receiver and there is no empty row for it. 3426 // Increment total counter to indicate polymorphic case. 3427 __ addptr(counter_addr, DataLayout::counter_increment); 3428 3429 __ bind(update_done); 3430 } 3431 } else { 3432 // Static call 3433 __ addptr(counter_addr, DataLayout::counter_increment); 3434 } 3435 } 3436 3437 void LIR_Assembler::emit_delay(LIR_OpDelay*) { 3438 Unimplemented(); 3439 } 3440 3441 3442 void LIR_Assembler::monitor_address(int monitor_no, LIR_Opr dst) { 3443 __ lea(dst->as_register(), frame_map()->address_for_monitor_lock(monitor_no)); 3444 } 3445 3446 3447 void LIR_Assembler::align_backward_branch_target() { 3448 __ align(BytesPerWord); 3449 } 3450 3451 3452 void LIR_Assembler::negate(LIR_Opr left, LIR_Opr dest) { 3453 if (left->is_single_cpu()) { 3454 __ negl(left->as_register()); 3455 move_regs(left->as_register(), dest->as_register()); 3456 3457 } else if (left->is_double_cpu()) { 3458 Register lo = left->as_register_lo(); 3459 #ifdef _LP64 3460 Register dst = dest->as_register_lo(); 3461 __ movptr(dst, lo); 3462 __ negptr(dst); 3463 #else 3464 Register hi = left->as_register_hi(); 3465 __ lneg(hi, lo); 3466 if (dest->as_register_lo() == hi) { 3467 assert(dest->as_register_hi() != lo, "destroying register"); 3468 move_regs(hi, dest->as_register_hi()); 3469 move_regs(lo, dest->as_register_lo()); 3470 } else { 3471 move_regs(lo, dest->as_register_lo()); 3472 move_regs(hi, dest->as_register_hi()); 3473 } 3474 #endif // _LP64 3475 3476 } else if (dest->is_single_xmm()) { 3477 if (left->as_xmm_float_reg() != dest->as_xmm_float_reg()) { 3478 __ movflt(dest->as_xmm_float_reg(), left->as_xmm_float_reg()); 3479 } 3480 __ xorps(dest->as_xmm_float_reg(), 3481 ExternalAddress((address)float_signflip_pool)); 3482 3483 } else if (dest->is_double_xmm()) { 3484 if (left->as_xmm_double_reg() != dest->as_xmm_double_reg()) { 3485 __ movdbl(dest->as_xmm_double_reg(), left->as_xmm_double_reg()); 3486 } 3487 __ xorpd(dest->as_xmm_double_reg(), 3488 ExternalAddress((address)double_signflip_pool)); 3489 3490 } else if (left->is_single_fpu() || left->is_double_fpu()) { 3491 assert(left->fpu() == 0, "arg must be on TOS"); 3492 assert(dest->fpu() == 0, "dest must be TOS"); 3493 __ fchs(); 3494 3495 } else { 3496 ShouldNotReachHere(); 3497 } 3498 } 3499 3500 3501 void LIR_Assembler::leal(LIR_Opr addr, LIR_Opr dest) { 3502 assert(addr->is_address() && dest->is_register(), "check"); 3503 Register reg; 3504 reg = dest->as_pointer_register(); 3505 __ lea(reg, as_Address(addr->as_address_ptr())); 3506 } 3507 3508 3509 3510 void LIR_Assembler::rt_call(LIR_Opr result, address dest, const LIR_OprList* args, LIR_Opr tmp, CodeEmitInfo* info) { 3511 assert(!tmp->is_valid(), "don't need temporary"); 3512 __ call(RuntimeAddress(dest)); 3513 if (info != NULL) { 3514 add_call_info_here(info); 3515 } 3516 } 3517 3518 3519 void LIR_Assembler::volatile_move_op(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info) { 3520 assert(type == T_LONG, "only for volatile long fields"); 3521 3522 if (info != NULL) { 3523 add_debug_info_for_null_check_here(info); 3524 } 3525 3526 if (src->is_double_xmm()) { 3527 if (dest->is_double_cpu()) { 3528 #ifdef _LP64 3529 __ movdq(dest->as_register_lo(), src->as_xmm_double_reg()); 3530 #else 3531 __ movdl(dest->as_register_lo(), src->as_xmm_double_reg()); 3532 __ psrlq(src->as_xmm_double_reg(), 32); 3533 __ movdl(dest->as_register_hi(), src->as_xmm_double_reg()); 3534 #endif // _LP64 3535 } else if (dest->is_double_stack()) { 3536 __ movdbl(frame_map()->address_for_slot(dest->double_stack_ix()), src->as_xmm_double_reg()); 3537 } else if (dest->is_address()) { 3538 __ movdbl(as_Address(dest->as_address_ptr()), src->as_xmm_double_reg()); 3539 } else { 3540 ShouldNotReachHere(); 3541 } 3542 3543 } else if (dest->is_double_xmm()) { 3544 if (src->is_double_stack()) { 3545 __ movdbl(dest->as_xmm_double_reg(), frame_map()->address_for_slot(src->double_stack_ix())); 3546 } else if (src->is_address()) { 3547 __ movdbl(dest->as_xmm_double_reg(), as_Address(src->as_address_ptr())); 3548 } else { 3549 ShouldNotReachHere(); 3550 } 3551 3552 } else if (src->is_double_fpu()) { 3553 assert(src->fpu_regnrLo() == 0, "must be TOS"); 3554 if (dest->is_double_stack()) { 3555 __ fistp_d(frame_map()->address_for_slot(dest->double_stack_ix())); 3556 } else if (dest->is_address()) { 3557 __ fistp_d(as_Address(dest->as_address_ptr())); 3558 } else { 3559 ShouldNotReachHere(); 3560 } 3561 3562 } else if (dest->is_double_fpu()) { 3563 assert(dest->fpu_regnrLo() == 0, "must be TOS"); 3564 if (src->is_double_stack()) { 3565 __ fild_d(frame_map()->address_for_slot(src->double_stack_ix())); 3566 } else if (src->is_address()) { 3567 __ fild_d(as_Address(src->as_address_ptr())); 3568 } else { 3569 ShouldNotReachHere(); 3570 } 3571 } else { 3572 ShouldNotReachHere(); 3573 } 3574 } 3575 3576 3577 void LIR_Assembler::membar() { 3578 // QQQ sparc TSO uses this, 3579 __ membar( Assembler::Membar_mask_bits(Assembler::StoreLoad)); 3580 } 3581 3582 void LIR_Assembler::membar_acquire() { 3583 // No x86 machines currently require load fences 3584 // __ load_fence(); 3585 } 3586 3587 void LIR_Assembler::membar_release() { 3588 // No x86 machines currently require store fences 3589 // __ store_fence(); 3590 } 3591 3592 void LIR_Assembler::get_thread(LIR_Opr result_reg) { 3593 assert(result_reg->is_register(), "check"); 3594 #ifdef _LP64 3595 // __ get_thread(result_reg->as_register_lo()); 3596 __ mov(result_reg->as_register(), r15_thread); 3597 #else 3598 __ get_thread(result_reg->as_register()); 3599 #endif // _LP64 3600 } 3601 3602 3603 void LIR_Assembler::peephole(LIR_List*) { 3604 // do nothing for now 3605 } 3606 3607 3608 #undef __