1 /* 2 * Copyright (c) 1999, 2019, 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 "asm/macroAssembler.hpp" 27 #include "asm/macroAssembler.inline.hpp" 28 #include "gc/shared/barrierSet.hpp" 29 #include "gc/shared/barrierSetAssembler.hpp" 30 #include "interpreter/interpreter.hpp" 31 #include "nativeInst_x86.hpp" 32 #include "oops/instanceOop.hpp" 33 #include "oops/method.hpp" 34 #include "oops/objArrayKlass.hpp" 35 #include "oops/oop.inline.hpp" 36 #include "prims/methodHandles.hpp" 37 #include "runtime/frame.inline.hpp" 38 #include "runtime/handles.inline.hpp" 39 #include "runtime/sharedRuntime.hpp" 40 #include "runtime/stubCodeGenerator.hpp" 41 #include "runtime/stubRoutines.hpp" 42 #include "runtime/thread.inline.hpp" 43 #ifdef COMPILER2 44 #include "opto/runtime.hpp" 45 #endif 46 47 // Declaration and definition of StubGenerator (no .hpp file). 48 // For a more detailed description of the stub routine structure 49 // see the comment in stubRoutines.hpp 50 51 #define __ _masm-> 52 #define a__ ((Assembler*)_masm)-> 53 54 #ifdef PRODUCT 55 #define BLOCK_COMMENT(str) /* nothing */ 56 #else 57 #define BLOCK_COMMENT(str) __ block_comment(str) 58 #endif 59 60 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") 61 62 const int MXCSR_MASK = 0xFFC0; // Mask out any pending exceptions 63 const int FPU_CNTRL_WRD_MASK = 0xFFFF; 64 65 // ------------------------------------------------------------------------------------------------------------------------- 66 // Stub Code definitions 67 68 class StubGenerator: public StubCodeGenerator { 69 private: 70 71 #ifdef PRODUCT 72 #define inc_counter_np(counter) ((void)0) 73 #else 74 void inc_counter_np_(int& counter) { 75 __ incrementl(ExternalAddress((address)&counter)); 76 } 77 #define inc_counter_np(counter) \ 78 BLOCK_COMMENT("inc_counter " #counter); \ 79 inc_counter_np_(counter); 80 #endif //PRODUCT 81 82 void inc_copy_counter_np(BasicType t) { 83 #ifndef PRODUCT 84 switch (t) { 85 case T_BYTE: inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); return; 86 case T_SHORT: inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); return; 87 case T_INT: inc_counter_np(SharedRuntime::_jint_array_copy_ctr); return; 88 case T_LONG: inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); return; 89 case T_OBJECT: inc_counter_np(SharedRuntime::_oop_array_copy_ctr); return; 90 default: ShouldNotReachHere(); 91 } 92 #endif //PRODUCT 93 } 94 95 //------------------------------------------------------------------------------------------------------------------------ 96 // Call stubs are used to call Java from C 97 // 98 // [ return_from_Java ] <--- rsp 99 // [ argument word n ] 100 // ... 101 // -N [ argument word 1 ] 102 // -7 [ Possible padding for stack alignment ] 103 // -6 [ Possible padding for stack alignment ] 104 // -5 [ Possible padding for stack alignment ] 105 // -4 [ mxcsr save ] <--- rsp_after_call 106 // -3 [ saved rbx, ] 107 // -2 [ saved rsi ] 108 // -1 [ saved rdi ] 109 // 0 [ saved rbp, ] <--- rbp, 110 // 1 [ return address ] 111 // 2 [ ptr. to call wrapper ] 112 // 3 [ result ] 113 // 4 [ result_type ] 114 // 5 [ method ] 115 // 6 [ entry_point ] 116 // 7 [ parameters ] 117 // 8 [ parameter_size ] 118 // 9 [ thread ] 119 120 121 address generate_call_stub(address& return_address) { 122 StubCodeMark mark(this, "StubRoutines", "call_stub"); 123 address start = __ pc(); 124 125 // stub code parameters / addresses 126 assert(frame::entry_frame_call_wrapper_offset == 2, "adjust this code"); 127 bool sse_save = false; 128 const Address rsp_after_call(rbp, -4 * wordSize); // same as in generate_catch_exception()! 129 const int locals_count_in_bytes (4*wordSize); 130 const Address mxcsr_save (rbp, -4 * wordSize); 131 const Address saved_rbx (rbp, -3 * wordSize); 132 const Address saved_rsi (rbp, -2 * wordSize); 133 const Address saved_rdi (rbp, -1 * wordSize); 134 const Address result (rbp, 3 * wordSize); 135 const Address result_type (rbp, 4 * wordSize); 136 const Address method (rbp, 5 * wordSize); 137 const Address entry_point (rbp, 6 * wordSize); 138 const Address parameters (rbp, 7 * wordSize); 139 const Address parameter_size(rbp, 8 * wordSize); 140 const Address thread (rbp, 9 * wordSize); // same as in generate_catch_exception()! 141 sse_save = UseSSE > 0; 142 143 // stub code 144 __ enter(); 145 __ movptr(rcx, parameter_size); // parameter counter 146 __ shlptr(rcx, Interpreter::logStackElementSize); // convert parameter count to bytes 147 __ addptr(rcx, locals_count_in_bytes); // reserve space for register saves 148 __ subptr(rsp, rcx); 149 __ andptr(rsp, -(StackAlignmentInBytes)); // Align stack 150 151 // save rdi, rsi, & rbx, according to C calling conventions 152 __ movptr(saved_rdi, rdi); 153 __ movptr(saved_rsi, rsi); 154 __ movptr(saved_rbx, rbx); 155 156 // save and initialize %mxcsr 157 if (sse_save) { 158 Label skip_ldmx; 159 __ stmxcsr(mxcsr_save); 160 __ movl(rax, mxcsr_save); 161 __ andl(rax, MXCSR_MASK); // Only check control and mask bits 162 ExternalAddress mxcsr_std(StubRoutines::addr_mxcsr_std()); 163 __ cmp32(rax, mxcsr_std); 164 __ jcc(Assembler::equal, skip_ldmx); 165 __ ldmxcsr(mxcsr_std); 166 __ bind(skip_ldmx); 167 } 168 169 // make sure the control word is correct. 170 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); 171 172 #ifdef ASSERT 173 // make sure we have no pending exceptions 174 { Label L; 175 __ movptr(rcx, thread); 176 __ cmpptr(Address(rcx, Thread::pending_exception_offset()), (int32_t)NULL_WORD); 177 __ jcc(Assembler::equal, L); 178 __ stop("StubRoutines::call_stub: entered with pending exception"); 179 __ bind(L); 180 } 181 #endif 182 183 // pass parameters if any 184 BLOCK_COMMENT("pass parameters if any"); 185 Label parameters_done; 186 __ movl(rcx, parameter_size); // parameter counter 187 __ testl(rcx, rcx); 188 __ jcc(Assembler::zero, parameters_done); 189 190 // parameter passing loop 191 192 Label loop; 193 // Copy Java parameters in reverse order (receiver last) 194 // Note that the argument order is inverted in the process 195 // source is rdx[rcx: N-1..0] 196 // dest is rsp[rbx: 0..N-1] 197 198 __ movptr(rdx, parameters); // parameter pointer 199 __ xorptr(rbx, rbx); 200 201 __ BIND(loop); 202 203 // get parameter 204 __ movptr(rax, Address(rdx, rcx, Interpreter::stackElementScale(), -wordSize)); 205 __ movptr(Address(rsp, rbx, Interpreter::stackElementScale(), 206 Interpreter::expr_offset_in_bytes(0)), rax); // store parameter 207 __ increment(rbx); 208 __ decrement(rcx); 209 __ jcc(Assembler::notZero, loop); 210 211 // call Java function 212 __ BIND(parameters_done); 213 __ movptr(rbx, method); // get Method* 214 __ movptr(rax, entry_point); // get entry_point 215 __ mov(rsi, rsp); // set sender sp 216 BLOCK_COMMENT("call Java function"); 217 __ call(rax); 218 219 BLOCK_COMMENT("call_stub_return_address:"); 220 return_address = __ pc(); 221 222 #ifdef COMPILER2 223 { 224 Label L_skip; 225 if (UseSSE >= 2) { 226 __ verify_FPU(0, "call_stub_return"); 227 } else { 228 for (int i = 1; i < 8; i++) { 229 __ ffree(i); 230 } 231 232 // UseSSE <= 1 so double result should be left on TOS 233 __ movl(rsi, result_type); 234 __ cmpl(rsi, T_DOUBLE); 235 __ jcc(Assembler::equal, L_skip); 236 if (UseSSE == 0) { 237 // UseSSE == 0 so float result should be left on TOS 238 __ cmpl(rsi, T_FLOAT); 239 __ jcc(Assembler::equal, L_skip); 240 } 241 __ ffree(0); 242 } 243 __ BIND(L_skip); 244 } 245 #endif // COMPILER2 246 247 // store result depending on type 248 // (everything that is not T_LONG, T_FLOAT or T_DOUBLE is treated as T_INT) 249 __ movptr(rdi, result); 250 Label is_long, is_float, is_double, exit; 251 __ movl(rsi, result_type); 252 __ cmpl(rsi, T_LONG); 253 __ jcc(Assembler::equal, is_long); 254 __ cmpl(rsi, T_FLOAT); 255 __ jcc(Assembler::equal, is_float); 256 __ cmpl(rsi, T_DOUBLE); 257 __ jcc(Assembler::equal, is_double); 258 259 // handle T_INT case 260 __ movl(Address(rdi, 0), rax); 261 __ BIND(exit); 262 263 // check that FPU stack is empty 264 __ verify_FPU(0, "generate_call_stub"); 265 266 // pop parameters 267 __ lea(rsp, rsp_after_call); 268 269 // restore %mxcsr 270 if (sse_save) { 271 __ ldmxcsr(mxcsr_save); 272 } 273 274 // restore rdi, rsi and rbx, 275 __ movptr(rbx, saved_rbx); 276 __ movptr(rsi, saved_rsi); 277 __ movptr(rdi, saved_rdi); 278 __ addptr(rsp, 4*wordSize); 279 280 // return 281 __ pop(rbp); 282 __ ret(0); 283 284 // handle return types different from T_INT 285 __ BIND(is_long); 286 __ movl(Address(rdi, 0 * wordSize), rax); 287 __ movl(Address(rdi, 1 * wordSize), rdx); 288 __ jmp(exit); 289 290 __ BIND(is_float); 291 // interpreter uses xmm0 for return values 292 if (UseSSE >= 1) { 293 __ movflt(Address(rdi, 0), xmm0); 294 } else { 295 __ fstp_s(Address(rdi, 0)); 296 } 297 __ jmp(exit); 298 299 __ BIND(is_double); 300 // interpreter uses xmm0 for return values 301 if (UseSSE >= 2) { 302 __ movdbl(Address(rdi, 0), xmm0); 303 } else { 304 __ fstp_d(Address(rdi, 0)); 305 } 306 __ jmp(exit); 307 308 return start; 309 } 310 311 312 //------------------------------------------------------------------------------------------------------------------------ 313 // Return point for a Java call if there's an exception thrown in Java code. 314 // The exception is caught and transformed into a pending exception stored in 315 // JavaThread that can be tested from within the VM. 316 // 317 // Note: Usually the parameters are removed by the callee. In case of an exception 318 // crossing an activation frame boundary, that is not the case if the callee 319 // is compiled code => need to setup the rsp. 320 // 321 // rax,: exception oop 322 323 address generate_catch_exception() { 324 StubCodeMark mark(this, "StubRoutines", "catch_exception"); 325 const Address rsp_after_call(rbp, -4 * wordSize); // same as in generate_call_stub()! 326 const Address thread (rbp, 9 * wordSize); // same as in generate_call_stub()! 327 address start = __ pc(); 328 329 // get thread directly 330 __ movptr(rcx, thread); 331 #ifdef ASSERT 332 // verify that threads correspond 333 { Label L; 334 __ get_thread(rbx); 335 __ cmpptr(rbx, rcx); 336 __ jcc(Assembler::equal, L); 337 __ stop("StubRoutines::catch_exception: threads must correspond"); 338 __ bind(L); 339 } 340 #endif 341 // set pending exception 342 __ verify_oop(rax); 343 __ movptr(Address(rcx, Thread::pending_exception_offset()), rax ); 344 __ lea(Address(rcx, Thread::exception_file_offset ()), 345 ExternalAddress((address)__FILE__)); 346 __ movl(Address(rcx, Thread::exception_line_offset ()), __LINE__ ); 347 // complete return to VM 348 assert(StubRoutines::_call_stub_return_address != NULL, "_call_stub_return_address must have been generated before"); 349 __ jump(RuntimeAddress(StubRoutines::_call_stub_return_address)); 350 351 return start; 352 } 353 354 355 //------------------------------------------------------------------------------------------------------------------------ 356 // Continuation point for runtime calls returning with a pending exception. 357 // The pending exception check happened in the runtime or native call stub. 358 // The pending exception in Thread is converted into a Java-level exception. 359 // 360 // Contract with Java-level exception handlers: 361 // rax: exception 362 // rdx: throwing pc 363 // 364 // NOTE: At entry of this stub, exception-pc must be on stack !! 365 366 address generate_forward_exception() { 367 StubCodeMark mark(this, "StubRoutines", "forward exception"); 368 address start = __ pc(); 369 const Register thread = rcx; 370 371 // other registers used in this stub 372 const Register exception_oop = rax; 373 const Register handler_addr = rbx; 374 const Register exception_pc = rdx; 375 376 // Upon entry, the sp points to the return address returning into Java 377 // (interpreted or compiled) code; i.e., the return address becomes the 378 // throwing pc. 379 // 380 // Arguments pushed before the runtime call are still on the stack but 381 // the exception handler will reset the stack pointer -> ignore them. 382 // A potential result in registers can be ignored as well. 383 384 #ifdef ASSERT 385 // make sure this code is only executed if there is a pending exception 386 { Label L; 387 __ get_thread(thread); 388 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); 389 __ jcc(Assembler::notEqual, L); 390 __ stop("StubRoutines::forward exception: no pending exception (1)"); 391 __ bind(L); 392 } 393 #endif 394 395 // compute exception handler into rbx, 396 __ get_thread(thread); 397 __ movptr(exception_pc, Address(rsp, 0)); 398 BLOCK_COMMENT("call exception_handler_for_return_address"); 399 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), thread, exception_pc); 400 __ mov(handler_addr, rax); 401 402 // setup rax & rdx, remove return address & clear pending exception 403 __ get_thread(thread); 404 __ pop(exception_pc); 405 __ movptr(exception_oop, Address(thread, Thread::pending_exception_offset())); 406 __ movptr(Address(thread, Thread::pending_exception_offset()), NULL_WORD); 407 408 #ifdef ASSERT 409 // make sure exception is set 410 { Label L; 411 __ testptr(exception_oop, exception_oop); 412 __ jcc(Assembler::notEqual, L); 413 __ stop("StubRoutines::forward exception: no pending exception (2)"); 414 __ bind(L); 415 } 416 #endif 417 418 // Verify that there is really a valid exception in RAX. 419 __ verify_oop(exception_oop); 420 421 // continue at exception handler (return address removed) 422 // rax: exception 423 // rbx: exception handler 424 // rdx: throwing pc 425 __ jmp(handler_addr); 426 427 return start; 428 } 429 430 431 //---------------------------------------------------------------------------------------------------- 432 // Support for int32_t Atomic::xchg(int32_t exchange_value, volatile int32_t* dest) 433 // 434 // xchg exists as far back as 8086, lock needed for MP only 435 // Stack layout immediately after call: 436 // 437 // 0 [ret addr ] <--- rsp 438 // 1 [ ex ] 439 // 2 [ dest ] 440 // 441 // Result: *dest <- ex, return (old *dest) 442 // 443 // Note: win32 does not currently use this code 444 445 address generate_atomic_xchg() { 446 StubCodeMark mark(this, "StubRoutines", "atomic_xchg"); 447 address start = __ pc(); 448 449 __ push(rdx); 450 Address exchange(rsp, 2 * wordSize); 451 Address dest_addr(rsp, 3 * wordSize); 452 __ movl(rax, exchange); 453 __ movptr(rdx, dest_addr); 454 __ xchgl(rax, Address(rdx, 0)); 455 __ pop(rdx); 456 __ ret(0); 457 458 return start; 459 } 460 461 //---------------------------------------------------------------------------------------------------- 462 // Support for void verify_mxcsr() 463 // 464 // This routine is used with -Xcheck:jni to verify that native 465 // JNI code does not return to Java code without restoring the 466 // MXCSR register to our expected state. 467 468 469 address generate_verify_mxcsr() { 470 StubCodeMark mark(this, "StubRoutines", "verify_mxcsr"); 471 address start = __ pc(); 472 473 const Address mxcsr_save(rsp, 0); 474 475 if (CheckJNICalls && UseSSE > 0 ) { 476 Label ok_ret; 477 ExternalAddress mxcsr_std(StubRoutines::addr_mxcsr_std()); 478 __ push(rax); 479 __ subptr(rsp, wordSize); // allocate a temp location 480 __ stmxcsr(mxcsr_save); 481 __ movl(rax, mxcsr_save); 482 __ andl(rax, MXCSR_MASK); 483 __ cmp32(rax, mxcsr_std); 484 __ jcc(Assembler::equal, ok_ret); 485 486 __ warn("MXCSR changed by native JNI code."); 487 488 __ ldmxcsr(mxcsr_std); 489 490 __ bind(ok_ret); 491 __ addptr(rsp, wordSize); 492 __ pop(rax); 493 } 494 495 __ ret(0); 496 497 return start; 498 } 499 500 501 //--------------------------------------------------------------------------- 502 // Support for void verify_fpu_cntrl_wrd() 503 // 504 // This routine is used with -Xcheck:jni to verify that native 505 // JNI code does not return to Java code without restoring the 506 // FP control word to our expected state. 507 508 address generate_verify_fpu_cntrl_wrd() { 509 StubCodeMark mark(this, "StubRoutines", "verify_spcw"); 510 address start = __ pc(); 511 512 const Address fpu_cntrl_wrd_save(rsp, 0); 513 514 if (CheckJNICalls) { 515 Label ok_ret; 516 __ push(rax); 517 __ subptr(rsp, wordSize); // allocate a temp location 518 __ fnstcw(fpu_cntrl_wrd_save); 519 __ movl(rax, fpu_cntrl_wrd_save); 520 __ andl(rax, FPU_CNTRL_WRD_MASK); 521 ExternalAddress fpu_std(StubRoutines::addr_fpu_cntrl_wrd_std()); 522 __ cmp32(rax, fpu_std); 523 __ jcc(Assembler::equal, ok_ret); 524 525 __ warn("Floating point control word changed by native JNI code."); 526 527 __ fldcw(fpu_std); 528 529 __ bind(ok_ret); 530 __ addptr(rsp, wordSize); 531 __ pop(rax); 532 } 533 534 __ ret(0); 535 536 return start; 537 } 538 539 //--------------------------------------------------------------------------- 540 // Wrapper for slow-case handling of double-to-integer conversion 541 // d2i or f2i fast case failed either because it is nan or because 542 // of under/overflow. 543 // Input: FPU TOS: float value 544 // Output: rax, (rdx): integer (long) result 545 546 address generate_d2i_wrapper(BasicType t, address fcn) { 547 StubCodeMark mark(this, "StubRoutines", "d2i_wrapper"); 548 address start = __ pc(); 549 550 // Capture info about frame layout 551 enum layout { FPUState_off = 0, 552 rbp_off = FPUStateSizeInWords, 553 rdi_off, 554 rsi_off, 555 rcx_off, 556 rbx_off, 557 saved_argument_off, 558 saved_argument_off2, // 2nd half of double 559 framesize 560 }; 561 562 assert(FPUStateSizeInWords == 27, "update stack layout"); 563 564 // Save outgoing argument to stack across push_FPU_state() 565 __ subptr(rsp, wordSize * 2); 566 __ fstp_d(Address(rsp, 0)); 567 568 // Save CPU & FPU state 569 __ push(rbx); 570 __ push(rcx); 571 __ push(rsi); 572 __ push(rdi); 573 __ push(rbp); 574 __ push_FPU_state(); 575 576 // push_FPU_state() resets the FP top of stack 577 // Load original double into FP top of stack 578 __ fld_d(Address(rsp, saved_argument_off * wordSize)); 579 // Store double into stack as outgoing argument 580 __ subptr(rsp, wordSize*2); 581 __ fst_d(Address(rsp, 0)); 582 583 // Prepare FPU for doing math in C-land 584 __ empty_FPU_stack(); 585 // Call the C code to massage the double. Result in EAX 586 if (t == T_INT) 587 { BLOCK_COMMENT("SharedRuntime::d2i"); } 588 else if (t == T_LONG) 589 { BLOCK_COMMENT("SharedRuntime::d2l"); } 590 __ call_VM_leaf( fcn, 2 ); 591 592 // Restore CPU & FPU state 593 __ pop_FPU_state(); 594 __ pop(rbp); 595 __ pop(rdi); 596 __ pop(rsi); 597 __ pop(rcx); 598 __ pop(rbx); 599 __ addptr(rsp, wordSize * 2); 600 601 __ ret(0); 602 603 return start; 604 } 605 606 607 //---------------------------------------------------------------------------------------------------- 608 // Non-destructive plausibility checks for oops 609 610 address generate_verify_oop() { 611 StubCodeMark mark(this, "StubRoutines", "verify_oop"); 612 address start = __ pc(); 613 614 // Incoming arguments on stack after saving rax,: 615 // 616 // [tos ]: saved rdx 617 // [tos + 1]: saved EFLAGS 618 // [tos + 2]: return address 619 // [tos + 3]: char* error message 620 // [tos + 4]: oop object to verify 621 // [tos + 5]: saved rax, - saved by caller and bashed 622 623 Label exit, error; 624 __ pushf(); 625 __ incrementl(ExternalAddress((address) StubRoutines::verify_oop_count_addr())); 626 __ push(rdx); // save rdx 627 // make sure object is 'reasonable' 628 __ movptr(rax, Address(rsp, 4 * wordSize)); // get object 629 __ testptr(rax, rax); 630 __ jcc(Assembler::zero, exit); // if obj is NULL it is ok 631 632 // Check if the oop is in the right area of memory 633 const int oop_mask = Universe::verify_oop_mask(); 634 const int oop_bits = Universe::verify_oop_bits(); 635 __ mov(rdx, rax); 636 __ andptr(rdx, oop_mask); 637 __ cmpptr(rdx, oop_bits); 638 __ jcc(Assembler::notZero, error); 639 640 // make sure klass is 'reasonable', which is not zero. 641 __ movptr(rax, Address(rax, oopDesc::klass_offset_in_bytes())); // get klass 642 __ testptr(rax, rax); 643 __ jcc(Assembler::zero, error); // if klass is NULL it is broken 644 645 // return if everything seems ok 646 __ bind(exit); 647 __ movptr(rax, Address(rsp, 5 * wordSize)); // get saved rax, back 648 __ pop(rdx); // restore rdx 649 __ popf(); // restore EFLAGS 650 __ ret(3 * wordSize); // pop arguments 651 652 // handle errors 653 __ bind(error); 654 __ movptr(rax, Address(rsp, 5 * wordSize)); // get saved rax, back 655 __ pop(rdx); // get saved rdx back 656 __ popf(); // get saved EFLAGS off stack -- will be ignored 657 __ pusha(); // push registers (eip = return address & msg are already pushed) 658 BLOCK_COMMENT("call MacroAssembler::debug"); 659 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, MacroAssembler::debug32))); 660 __ popa(); 661 __ ret(3 * wordSize); // pop arguments 662 return start; 663 } 664 665 666 // Copy 64 bytes chunks 667 // 668 // Inputs: 669 // from - source array address 670 // to_from - destination array address - from 671 // qword_count - 8-bytes element count, negative 672 // 673 void xmm_copy_forward(Register from, Register to_from, Register qword_count) { 674 assert( UseSSE >= 2, "supported cpu only" ); 675 Label L_copy_64_bytes_loop, L_copy_64_bytes, L_copy_8_bytes, L_exit; 676 677 // Copy 64-byte chunks 678 __ jmpb(L_copy_64_bytes); 679 __ align(OptoLoopAlignment); 680 __ BIND(L_copy_64_bytes_loop); 681 682 if (UseUnalignedLoadStores) { 683 if (UseAVX > 2) { 684 __ evmovdqul(xmm0, Address(from, 0), Assembler::AVX_512bit); 685 __ evmovdqul(Address(from, to_from, Address::times_1, 0), xmm0, Assembler::AVX_512bit); 686 } else if (UseAVX == 2) { 687 __ vmovdqu(xmm0, Address(from, 0)); 688 __ vmovdqu(Address(from, to_from, Address::times_1, 0), xmm0); 689 __ vmovdqu(xmm1, Address(from, 32)); 690 __ vmovdqu(Address(from, to_from, Address::times_1, 32), xmm1); 691 } else { 692 __ movdqu(xmm0, Address(from, 0)); 693 __ movdqu(Address(from, to_from, Address::times_1, 0), xmm0); 694 __ movdqu(xmm1, Address(from, 16)); 695 __ movdqu(Address(from, to_from, Address::times_1, 16), xmm1); 696 __ movdqu(xmm2, Address(from, 32)); 697 __ movdqu(Address(from, to_from, Address::times_1, 32), xmm2); 698 __ movdqu(xmm3, Address(from, 48)); 699 __ movdqu(Address(from, to_from, Address::times_1, 48), xmm3); 700 } 701 } else { 702 __ movq(xmm0, Address(from, 0)); 703 __ movq(Address(from, to_from, Address::times_1, 0), xmm0); 704 __ movq(xmm1, Address(from, 8)); 705 __ movq(Address(from, to_from, Address::times_1, 8), xmm1); 706 __ movq(xmm2, Address(from, 16)); 707 __ movq(Address(from, to_from, Address::times_1, 16), xmm2); 708 __ movq(xmm3, Address(from, 24)); 709 __ movq(Address(from, to_from, Address::times_1, 24), xmm3); 710 __ movq(xmm4, Address(from, 32)); 711 __ movq(Address(from, to_from, Address::times_1, 32), xmm4); 712 __ movq(xmm5, Address(from, 40)); 713 __ movq(Address(from, to_from, Address::times_1, 40), xmm5); 714 __ movq(xmm6, Address(from, 48)); 715 __ movq(Address(from, to_from, Address::times_1, 48), xmm6); 716 __ movq(xmm7, Address(from, 56)); 717 __ movq(Address(from, to_from, Address::times_1, 56), xmm7); 718 } 719 720 __ addl(from, 64); 721 __ BIND(L_copy_64_bytes); 722 __ subl(qword_count, 8); 723 __ jcc(Assembler::greaterEqual, L_copy_64_bytes_loop); 724 725 if (UseUnalignedLoadStores && (UseAVX == 2)) { 726 // clean upper bits of YMM registers 727 __ vpxor(xmm0, xmm0); 728 __ vpxor(xmm1, xmm1); 729 } 730 __ addl(qword_count, 8); 731 __ jccb(Assembler::zero, L_exit); 732 // 733 // length is too short, just copy qwords 734 // 735 __ BIND(L_copy_8_bytes); 736 __ movq(xmm0, Address(from, 0)); 737 __ movq(Address(from, to_from, Address::times_1), xmm0); 738 __ addl(from, 8); 739 __ decrement(qword_count); 740 __ jcc(Assembler::greater, L_copy_8_bytes); 741 __ BIND(L_exit); 742 } 743 744 // Copy 64 bytes chunks 745 // 746 // Inputs: 747 // from - source array address 748 // to_from - destination array address - from 749 // qword_count - 8-bytes element count, negative 750 // 751 void mmx_copy_forward(Register from, Register to_from, Register qword_count) { 752 assert( VM_Version::supports_mmx(), "supported cpu only" ); 753 Label L_copy_64_bytes_loop, L_copy_64_bytes, L_copy_8_bytes, L_exit; 754 // Copy 64-byte chunks 755 __ jmpb(L_copy_64_bytes); 756 __ align(OptoLoopAlignment); 757 __ BIND(L_copy_64_bytes_loop); 758 __ movq(mmx0, Address(from, 0)); 759 __ movq(mmx1, Address(from, 8)); 760 __ movq(mmx2, Address(from, 16)); 761 __ movq(Address(from, to_from, Address::times_1, 0), mmx0); 762 __ movq(mmx3, Address(from, 24)); 763 __ movq(Address(from, to_from, Address::times_1, 8), mmx1); 764 __ movq(mmx4, Address(from, 32)); 765 __ movq(Address(from, to_from, Address::times_1, 16), mmx2); 766 __ movq(mmx5, Address(from, 40)); 767 __ movq(Address(from, to_from, Address::times_1, 24), mmx3); 768 __ movq(mmx6, Address(from, 48)); 769 __ movq(Address(from, to_from, Address::times_1, 32), mmx4); 770 __ movq(mmx7, Address(from, 56)); 771 __ movq(Address(from, to_from, Address::times_1, 40), mmx5); 772 __ movq(Address(from, to_from, Address::times_1, 48), mmx6); 773 __ movq(Address(from, to_from, Address::times_1, 56), mmx7); 774 __ addptr(from, 64); 775 __ BIND(L_copy_64_bytes); 776 __ subl(qword_count, 8); 777 __ jcc(Assembler::greaterEqual, L_copy_64_bytes_loop); 778 __ addl(qword_count, 8); 779 __ jccb(Assembler::zero, L_exit); 780 // 781 // length is too short, just copy qwords 782 // 783 __ BIND(L_copy_8_bytes); 784 __ movq(mmx0, Address(from, 0)); 785 __ movq(Address(from, to_from, Address::times_1), mmx0); 786 __ addptr(from, 8); 787 __ decrement(qword_count); 788 __ jcc(Assembler::greater, L_copy_8_bytes); 789 __ BIND(L_exit); 790 __ emms(); 791 } 792 793 address generate_disjoint_copy(BasicType t, bool aligned, 794 Address::ScaleFactor sf, 795 address* entry, const char *name, 796 bool dest_uninitialized = false) { 797 __ align(CodeEntryAlignment); 798 StubCodeMark mark(this, "StubRoutines", name); 799 address start = __ pc(); 800 801 Label L_0_count, L_exit, L_skip_align1, L_skip_align2, L_copy_byte; 802 Label L_copy_2_bytes, L_copy_4_bytes, L_copy_64_bytes; 803 804 int shift = Address::times_ptr - sf; 805 806 const Register from = rsi; // source array address 807 const Register to = rdi; // destination array address 808 const Register count = rcx; // elements count 809 const Register to_from = to; // (to - from) 810 const Register saved_to = rdx; // saved destination array address 811 812 __ enter(); // required for proper stackwalking of RuntimeStub frame 813 __ push(rsi); 814 __ push(rdi); 815 __ movptr(from , Address(rsp, 12+ 4)); 816 __ movptr(to , Address(rsp, 12+ 8)); 817 __ movl(count, Address(rsp, 12+ 12)); 818 819 if (entry != NULL) { 820 *entry = __ pc(); // Entry point from conjoint arraycopy stub. 821 BLOCK_COMMENT("Entry:"); 822 } 823 824 if (t == T_OBJECT) { 825 __ testl(count, count); 826 __ jcc(Assembler::zero, L_0_count); 827 } 828 829 DecoratorSet decorators = IN_HEAP | IS_ARRAY | ARRAYCOPY_DISJOINT; 830 if (dest_uninitialized) { 831 decorators |= IS_DEST_UNINITIALIZED; 832 } 833 if (aligned) { 834 decorators |= ARRAYCOPY_ALIGNED; 835 } 836 837 BarrierSetAssembler *bs = BarrierSet::barrier_set()->barrier_set_assembler(); 838 bs->arraycopy_prologue(_masm, decorators, t, from, to, count); 839 840 __ subptr(to, from); // to --> to_from 841 __ cmpl(count, 2<<shift); // Short arrays (< 8 bytes) copy by element 842 __ jcc(Assembler::below, L_copy_4_bytes); // use unsigned cmp 843 if (!UseUnalignedLoadStores && !aligned && (t == T_BYTE || t == T_SHORT)) { 844 // align source address at 4 bytes address boundary 845 if (t == T_BYTE) { 846 // One byte misalignment happens only for byte arrays 847 __ testl(from, 1); 848 __ jccb(Assembler::zero, L_skip_align1); 849 __ movb(rax, Address(from, 0)); 850 __ movb(Address(from, to_from, Address::times_1, 0), rax); 851 __ increment(from); 852 __ decrement(count); 853 __ BIND(L_skip_align1); 854 } 855 // Two bytes misalignment happens only for byte and short (char) arrays 856 __ testl(from, 2); 857 __ jccb(Assembler::zero, L_skip_align2); 858 __ movw(rax, Address(from, 0)); 859 __ movw(Address(from, to_from, Address::times_1, 0), rax); 860 __ addptr(from, 2); 861 __ subl(count, 1<<(shift-1)); 862 __ BIND(L_skip_align2); 863 } 864 if (!VM_Version::supports_mmx()) { 865 __ mov(rax, count); // save 'count' 866 __ shrl(count, shift); // bytes count 867 __ addptr(to_from, from);// restore 'to' 868 __ rep_mov(); 869 __ subptr(to_from, from);// restore 'to_from' 870 __ mov(count, rax); // restore 'count' 871 __ jmpb(L_copy_2_bytes); // all dwords were copied 872 } else { 873 if (!UseUnalignedLoadStores) { 874 // align to 8 bytes, we know we are 4 byte aligned to start 875 __ testptr(from, 4); 876 __ jccb(Assembler::zero, L_copy_64_bytes); 877 __ movl(rax, Address(from, 0)); 878 __ movl(Address(from, to_from, Address::times_1, 0), rax); 879 __ addptr(from, 4); 880 __ subl(count, 1<<shift); 881 } 882 __ BIND(L_copy_64_bytes); 883 __ mov(rax, count); 884 __ shrl(rax, shift+1); // 8 bytes chunk count 885 // 886 // Copy 8-byte chunks through MMX registers, 8 per iteration of the loop 887 // 888 if (UseXMMForArrayCopy) { 889 xmm_copy_forward(from, to_from, rax); 890 } else { 891 mmx_copy_forward(from, to_from, rax); 892 } 893 } 894 // copy tailing dword 895 __ BIND(L_copy_4_bytes); 896 __ testl(count, 1<<shift); 897 __ jccb(Assembler::zero, L_copy_2_bytes); 898 __ movl(rax, Address(from, 0)); 899 __ movl(Address(from, to_from, Address::times_1, 0), rax); 900 if (t == T_BYTE || t == T_SHORT) { 901 __ addptr(from, 4); 902 __ BIND(L_copy_2_bytes); 903 // copy tailing word 904 __ testl(count, 1<<(shift-1)); 905 __ jccb(Assembler::zero, L_copy_byte); 906 __ movw(rax, Address(from, 0)); 907 __ movw(Address(from, to_from, Address::times_1, 0), rax); 908 if (t == T_BYTE) { 909 __ addptr(from, 2); 910 __ BIND(L_copy_byte); 911 // copy tailing byte 912 __ testl(count, 1); 913 __ jccb(Assembler::zero, L_exit); 914 __ movb(rax, Address(from, 0)); 915 __ movb(Address(from, to_from, Address::times_1, 0), rax); 916 __ BIND(L_exit); 917 } else { 918 __ BIND(L_copy_byte); 919 } 920 } else { 921 __ BIND(L_copy_2_bytes); 922 } 923 924 __ movl(count, Address(rsp, 12+12)); // reread 'count' 925 bs->arraycopy_epilogue(_masm, decorators, t, from, to, count); 926 927 if (t == T_OBJECT) { 928 __ BIND(L_0_count); 929 } 930 inc_copy_counter_np(t); 931 __ pop(rdi); 932 __ pop(rsi); 933 __ leave(); // required for proper stackwalking of RuntimeStub frame 934 __ vzeroupper(); 935 __ xorptr(rax, rax); // return 0 936 __ ret(0); 937 return start; 938 } 939 940 941 address generate_fill(BasicType t, bool aligned, const char *name) { 942 __ align(CodeEntryAlignment); 943 StubCodeMark mark(this, "StubRoutines", name); 944 address start = __ pc(); 945 946 BLOCK_COMMENT("Entry:"); 947 948 const Register to = rdi; // source array address 949 const Register value = rdx; // value 950 const Register count = rsi; // elements count 951 952 __ enter(); // required for proper stackwalking of RuntimeStub frame 953 __ push(rsi); 954 __ push(rdi); 955 __ movptr(to , Address(rsp, 12+ 4)); 956 __ movl(value, Address(rsp, 12+ 8)); 957 __ movl(count, Address(rsp, 12+ 12)); 958 959 __ generate_fill(t, aligned, to, value, count, rax, xmm0); 960 961 __ pop(rdi); 962 __ pop(rsi); 963 __ leave(); // required for proper stackwalking of RuntimeStub frame 964 __ ret(0); 965 return start; 966 } 967 968 address generate_conjoint_copy(BasicType t, bool aligned, 969 Address::ScaleFactor sf, 970 address nooverlap_target, 971 address* entry, const char *name, 972 bool dest_uninitialized = false) { 973 __ align(CodeEntryAlignment); 974 StubCodeMark mark(this, "StubRoutines", name); 975 address start = __ pc(); 976 977 Label L_0_count, L_exit, L_skip_align1, L_skip_align2, L_copy_byte; 978 Label L_copy_2_bytes, L_copy_4_bytes, L_copy_8_bytes, L_copy_8_bytes_loop; 979 980 int shift = Address::times_ptr - sf; 981 982 const Register src = rax; // source array address 983 const Register dst = rdx; // destination array address 984 const Register from = rsi; // source array address 985 const Register to = rdi; // destination array address 986 const Register count = rcx; // elements count 987 const Register end = rax; // array end address 988 989 __ enter(); // required for proper stackwalking of RuntimeStub frame 990 __ push(rsi); 991 __ push(rdi); 992 __ movptr(src , Address(rsp, 12+ 4)); // from 993 __ movptr(dst , Address(rsp, 12+ 8)); // to 994 __ movl2ptr(count, Address(rsp, 12+12)); // count 995 996 if (entry != NULL) { 997 *entry = __ pc(); // Entry point from generic arraycopy stub. 998 BLOCK_COMMENT("Entry:"); 999 } 1000 1001 // nooverlap_target expects arguments in rsi and rdi. 1002 __ mov(from, src); 1003 __ mov(to , dst); 1004 1005 // arrays overlap test: dispatch to disjoint stub if necessary. 1006 RuntimeAddress nooverlap(nooverlap_target); 1007 __ cmpptr(dst, src); 1008 __ lea(end, Address(src, count, sf, 0)); // src + count * elem_size 1009 __ jump_cc(Assembler::belowEqual, nooverlap); 1010 __ cmpptr(dst, end); 1011 __ jump_cc(Assembler::aboveEqual, nooverlap); 1012 1013 if (t == T_OBJECT) { 1014 __ testl(count, count); 1015 __ jcc(Assembler::zero, L_0_count); 1016 } 1017 1018 DecoratorSet decorators = IN_HEAP | IS_ARRAY; 1019 if (dest_uninitialized) { 1020 decorators |= IS_DEST_UNINITIALIZED; 1021 } 1022 if (aligned) { 1023 decorators |= ARRAYCOPY_ALIGNED; 1024 } 1025 1026 BarrierSetAssembler *bs = BarrierSet::barrier_set()->barrier_set_assembler(); 1027 bs->arraycopy_prologue(_masm, decorators, t, from, to, count); 1028 1029 // copy from high to low 1030 __ cmpl(count, 2<<shift); // Short arrays (< 8 bytes) copy by element 1031 __ jcc(Assembler::below, L_copy_4_bytes); // use unsigned cmp 1032 if (t == T_BYTE || t == T_SHORT) { 1033 // Align the end of destination array at 4 bytes address boundary 1034 __ lea(end, Address(dst, count, sf, 0)); 1035 if (t == T_BYTE) { 1036 // One byte misalignment happens only for byte arrays 1037 __ testl(end, 1); 1038 __ jccb(Assembler::zero, L_skip_align1); 1039 __ decrement(count); 1040 __ movb(rdx, Address(from, count, sf, 0)); 1041 __ movb(Address(to, count, sf, 0), rdx); 1042 __ BIND(L_skip_align1); 1043 } 1044 // Two bytes misalignment happens only for byte and short (char) arrays 1045 __ testl(end, 2); 1046 __ jccb(Assembler::zero, L_skip_align2); 1047 __ subptr(count, 1<<(shift-1)); 1048 __ movw(rdx, Address(from, count, sf, 0)); 1049 __ movw(Address(to, count, sf, 0), rdx); 1050 __ BIND(L_skip_align2); 1051 __ cmpl(count, 2<<shift); // Short arrays (< 8 bytes) copy by element 1052 __ jcc(Assembler::below, L_copy_4_bytes); 1053 } 1054 1055 if (!VM_Version::supports_mmx()) { 1056 __ std(); 1057 __ mov(rax, count); // Save 'count' 1058 __ mov(rdx, to); // Save 'to' 1059 __ lea(rsi, Address(from, count, sf, -4)); 1060 __ lea(rdi, Address(to , count, sf, -4)); 1061 __ shrptr(count, shift); // bytes count 1062 __ rep_mov(); 1063 __ cld(); 1064 __ mov(count, rax); // restore 'count' 1065 __ andl(count, (1<<shift)-1); // mask the number of rest elements 1066 __ movptr(from, Address(rsp, 12+4)); // reread 'from' 1067 __ mov(to, rdx); // restore 'to' 1068 __ jmpb(L_copy_2_bytes); // all dword were copied 1069 } else { 1070 // Align to 8 bytes the end of array. It is aligned to 4 bytes already. 1071 __ testptr(end, 4); 1072 __ jccb(Assembler::zero, L_copy_8_bytes); 1073 __ subl(count, 1<<shift); 1074 __ movl(rdx, Address(from, count, sf, 0)); 1075 __ movl(Address(to, count, sf, 0), rdx); 1076 __ jmpb(L_copy_8_bytes); 1077 1078 __ align(OptoLoopAlignment); 1079 // Move 8 bytes 1080 __ BIND(L_copy_8_bytes_loop); 1081 if (UseXMMForArrayCopy) { 1082 __ movq(xmm0, Address(from, count, sf, 0)); 1083 __ movq(Address(to, count, sf, 0), xmm0); 1084 } else { 1085 __ movq(mmx0, Address(from, count, sf, 0)); 1086 __ movq(Address(to, count, sf, 0), mmx0); 1087 } 1088 __ BIND(L_copy_8_bytes); 1089 __ subl(count, 2<<shift); 1090 __ jcc(Assembler::greaterEqual, L_copy_8_bytes_loop); 1091 __ addl(count, 2<<shift); 1092 if (!UseXMMForArrayCopy) { 1093 __ emms(); 1094 } 1095 } 1096 __ BIND(L_copy_4_bytes); 1097 // copy prefix qword 1098 __ testl(count, 1<<shift); 1099 __ jccb(Assembler::zero, L_copy_2_bytes); 1100 __ movl(rdx, Address(from, count, sf, -4)); 1101 __ movl(Address(to, count, sf, -4), rdx); 1102 1103 if (t == T_BYTE || t == T_SHORT) { 1104 __ subl(count, (1<<shift)); 1105 __ BIND(L_copy_2_bytes); 1106 // copy prefix dword 1107 __ testl(count, 1<<(shift-1)); 1108 __ jccb(Assembler::zero, L_copy_byte); 1109 __ movw(rdx, Address(from, count, sf, -2)); 1110 __ movw(Address(to, count, sf, -2), rdx); 1111 if (t == T_BYTE) { 1112 __ subl(count, 1<<(shift-1)); 1113 __ BIND(L_copy_byte); 1114 // copy prefix byte 1115 __ testl(count, 1); 1116 __ jccb(Assembler::zero, L_exit); 1117 __ movb(rdx, Address(from, 0)); 1118 __ movb(Address(to, 0), rdx); 1119 __ BIND(L_exit); 1120 } else { 1121 __ BIND(L_copy_byte); 1122 } 1123 } else { 1124 __ BIND(L_copy_2_bytes); 1125 } 1126 1127 __ movl2ptr(count, Address(rsp, 12+12)); // reread count 1128 bs->arraycopy_epilogue(_masm, decorators, t, from, to, count); 1129 1130 if (t == T_OBJECT) { 1131 __ BIND(L_0_count); 1132 } 1133 inc_copy_counter_np(t); 1134 __ pop(rdi); 1135 __ pop(rsi); 1136 __ leave(); // required for proper stackwalking of RuntimeStub frame 1137 __ xorptr(rax, rax); // return 0 1138 __ ret(0); 1139 return start; 1140 } 1141 1142 1143 address generate_disjoint_long_copy(address* entry, const char *name) { 1144 __ align(CodeEntryAlignment); 1145 StubCodeMark mark(this, "StubRoutines", name); 1146 address start = __ pc(); 1147 1148 Label L_copy_8_bytes, L_copy_8_bytes_loop; 1149 const Register from = rax; // source array address 1150 const Register to = rdx; // destination array address 1151 const Register count = rcx; // elements count 1152 const Register to_from = rdx; // (to - from) 1153 1154 __ enter(); // required for proper stackwalking of RuntimeStub frame 1155 __ movptr(from , Address(rsp, 8+0)); // from 1156 __ movptr(to , Address(rsp, 8+4)); // to 1157 __ movl2ptr(count, Address(rsp, 8+8)); // count 1158 1159 *entry = __ pc(); // Entry point from conjoint arraycopy stub. 1160 BLOCK_COMMENT("Entry:"); 1161 1162 __ subptr(to, from); // to --> to_from 1163 if (VM_Version::supports_mmx()) { 1164 if (UseXMMForArrayCopy) { 1165 xmm_copy_forward(from, to_from, count); 1166 } else { 1167 mmx_copy_forward(from, to_from, count); 1168 } 1169 } else { 1170 __ jmpb(L_copy_8_bytes); 1171 __ align(OptoLoopAlignment); 1172 __ BIND(L_copy_8_bytes_loop); 1173 __ fild_d(Address(from, 0)); 1174 __ fistp_d(Address(from, to_from, Address::times_1)); 1175 __ addptr(from, 8); 1176 __ BIND(L_copy_8_bytes); 1177 __ decrement(count); 1178 __ jcc(Assembler::greaterEqual, L_copy_8_bytes_loop); 1179 } 1180 inc_copy_counter_np(T_LONG); 1181 __ leave(); // required for proper stackwalking of RuntimeStub frame 1182 __ vzeroupper(); 1183 __ xorptr(rax, rax); // return 0 1184 __ ret(0); 1185 return start; 1186 } 1187 1188 address generate_conjoint_long_copy(address nooverlap_target, 1189 address* entry, const char *name) { 1190 __ align(CodeEntryAlignment); 1191 StubCodeMark mark(this, "StubRoutines", name); 1192 address start = __ pc(); 1193 1194 Label L_copy_8_bytes, L_copy_8_bytes_loop; 1195 const Register from = rax; // source array address 1196 const Register to = rdx; // destination array address 1197 const Register count = rcx; // elements count 1198 const Register end_from = rax; // source array end address 1199 1200 __ enter(); // required for proper stackwalking of RuntimeStub frame 1201 __ movptr(from , Address(rsp, 8+0)); // from 1202 __ movptr(to , Address(rsp, 8+4)); // to 1203 __ movl2ptr(count, Address(rsp, 8+8)); // count 1204 1205 *entry = __ pc(); // Entry point from generic arraycopy stub. 1206 BLOCK_COMMENT("Entry:"); 1207 1208 // arrays overlap test 1209 __ cmpptr(to, from); 1210 RuntimeAddress nooverlap(nooverlap_target); 1211 __ jump_cc(Assembler::belowEqual, nooverlap); 1212 __ lea(end_from, Address(from, count, Address::times_8, 0)); 1213 __ cmpptr(to, end_from); 1214 __ movptr(from, Address(rsp, 8)); // from 1215 __ jump_cc(Assembler::aboveEqual, nooverlap); 1216 1217 __ jmpb(L_copy_8_bytes); 1218 1219 __ align(OptoLoopAlignment); 1220 __ BIND(L_copy_8_bytes_loop); 1221 if (VM_Version::supports_mmx()) { 1222 if (UseXMMForArrayCopy) { 1223 __ movq(xmm0, Address(from, count, Address::times_8)); 1224 __ movq(Address(to, count, Address::times_8), xmm0); 1225 } else { 1226 __ movq(mmx0, Address(from, count, Address::times_8)); 1227 __ movq(Address(to, count, Address::times_8), mmx0); 1228 } 1229 } else { 1230 __ fild_d(Address(from, count, Address::times_8)); 1231 __ fistp_d(Address(to, count, Address::times_8)); 1232 } 1233 __ BIND(L_copy_8_bytes); 1234 __ decrement(count); 1235 __ jcc(Assembler::greaterEqual, L_copy_8_bytes_loop); 1236 1237 if (VM_Version::supports_mmx() && !UseXMMForArrayCopy) { 1238 __ emms(); 1239 } 1240 inc_copy_counter_np(T_LONG); 1241 __ leave(); // required for proper stackwalking of RuntimeStub frame 1242 __ xorptr(rax, rax); // return 0 1243 __ ret(0); 1244 return start; 1245 } 1246 1247 1248 // Helper for generating a dynamic type check. 1249 // The sub_klass must be one of {rbx, rdx, rsi}. 1250 // The temp is killed. 1251 void generate_type_check(Register sub_klass, 1252 Address& super_check_offset_addr, 1253 Address& super_klass_addr, 1254 Register temp, 1255 Label* L_success, Label* L_failure) { 1256 BLOCK_COMMENT("type_check:"); 1257 1258 Label L_fallthrough; 1259 #define LOCAL_JCC(assembler_con, label_ptr) \ 1260 if (label_ptr != NULL) __ jcc(assembler_con, *(label_ptr)); \ 1261 else __ jcc(assembler_con, L_fallthrough) /*omit semi*/ 1262 1263 // The following is a strange variation of the fast path which requires 1264 // one less register, because needed values are on the argument stack. 1265 // __ check_klass_subtype_fast_path(sub_klass, *super_klass*, temp, 1266 // L_success, L_failure, NULL); 1267 assert_different_registers(sub_klass, temp); 1268 1269 int sc_offset = in_bytes(Klass::secondary_super_cache_offset()); 1270 1271 // if the pointers are equal, we are done (e.g., String[] elements) 1272 __ cmpptr(sub_klass, super_klass_addr); 1273 LOCAL_JCC(Assembler::equal, L_success); 1274 1275 // check the supertype display: 1276 __ movl2ptr(temp, super_check_offset_addr); 1277 Address super_check_addr(sub_klass, temp, Address::times_1, 0); 1278 __ movptr(temp, super_check_addr); // load displayed supertype 1279 __ cmpptr(temp, super_klass_addr); // test the super type 1280 LOCAL_JCC(Assembler::equal, L_success); 1281 1282 // if it was a primary super, we can just fail immediately 1283 __ cmpl(super_check_offset_addr, sc_offset); 1284 LOCAL_JCC(Assembler::notEqual, L_failure); 1285 1286 // The repne_scan instruction uses fixed registers, which will get spilled. 1287 // We happen to know this works best when super_klass is in rax. 1288 Register super_klass = temp; 1289 __ movptr(super_klass, super_klass_addr); 1290 __ check_klass_subtype_slow_path(sub_klass, super_klass, noreg, noreg, 1291 L_success, L_failure); 1292 1293 __ bind(L_fallthrough); 1294 1295 if (L_success == NULL) { BLOCK_COMMENT("L_success:"); } 1296 if (L_failure == NULL) { BLOCK_COMMENT("L_failure:"); } 1297 1298 #undef LOCAL_JCC 1299 } 1300 1301 // 1302 // Generate checkcasting array copy stub 1303 // 1304 // Input: 1305 // 4(rsp) - source array address 1306 // 8(rsp) - destination array address 1307 // 12(rsp) - element count, can be zero 1308 // 16(rsp) - size_t ckoff (super_check_offset) 1309 // 20(rsp) - oop ckval (super_klass) 1310 // 1311 // Output: 1312 // rax, == 0 - success 1313 // rax, == -1^K - failure, where K is partial transfer count 1314 // 1315 address generate_checkcast_copy(const char *name, address* entry, bool dest_uninitialized = false) { 1316 __ align(CodeEntryAlignment); 1317 StubCodeMark mark(this, "StubRoutines", name); 1318 address start = __ pc(); 1319 1320 Label L_load_element, L_store_element, L_do_card_marks, L_done; 1321 1322 // register use: 1323 // rax, rdx, rcx -- loop control (end_from, end_to, count) 1324 // rdi, rsi -- element access (oop, klass) 1325 // rbx, -- temp 1326 const Register from = rax; // source array address 1327 const Register to = rdx; // destination array address 1328 const Register length = rcx; // elements count 1329 const Register elem = rdi; // each oop copied 1330 const Register elem_klass = rsi; // each elem._klass (sub_klass) 1331 const Register temp = rbx; // lone remaining temp 1332 1333 __ enter(); // required for proper stackwalking of RuntimeStub frame 1334 1335 __ push(rsi); 1336 __ push(rdi); 1337 __ push(rbx); 1338 1339 Address from_arg(rsp, 16+ 4); // from 1340 Address to_arg(rsp, 16+ 8); // to 1341 Address length_arg(rsp, 16+12); // elements count 1342 Address ckoff_arg(rsp, 16+16); // super_check_offset 1343 Address ckval_arg(rsp, 16+20); // super_klass 1344 1345 // Load up: 1346 __ movptr(from, from_arg); 1347 __ movptr(to, to_arg); 1348 __ movl2ptr(length, length_arg); 1349 1350 if (entry != NULL) { 1351 *entry = __ pc(); // Entry point from generic arraycopy stub. 1352 BLOCK_COMMENT("Entry:"); 1353 } 1354 1355 //--------------------------------------------------------------- 1356 // Assembler stub will be used for this call to arraycopy 1357 // if the two arrays are subtypes of Object[] but the 1358 // destination array type is not equal to or a supertype 1359 // of the source type. Each element must be separately 1360 // checked. 1361 1362 // Loop-invariant addresses. They are exclusive end pointers. 1363 Address end_from_addr(from, length, Address::times_ptr, 0); 1364 Address end_to_addr(to, length, Address::times_ptr, 0); 1365 1366 Register end_from = from; // re-use 1367 Register end_to = to; // re-use 1368 Register count = length; // re-use 1369 1370 // Loop-variant addresses. They assume post-incremented count < 0. 1371 Address from_element_addr(end_from, count, Address::times_ptr, 0); 1372 Address to_element_addr(end_to, count, Address::times_ptr, 0); 1373 Address elem_klass_addr(elem, oopDesc::klass_offset_in_bytes()); 1374 1375 DecoratorSet decorators = IN_HEAP | IS_ARRAY | ARRAYCOPY_CHECKCAST; 1376 if (dest_uninitialized) { 1377 decorators |= IS_DEST_UNINITIALIZED; 1378 } 1379 1380 BasicType type = T_OBJECT; 1381 BarrierSetAssembler *bs = BarrierSet::barrier_set()->barrier_set_assembler(); 1382 bs->arraycopy_prologue(_masm, decorators, type, from, to, count); 1383 1384 // Copy from low to high addresses, indexed from the end of each array. 1385 __ lea(end_from, end_from_addr); 1386 __ lea(end_to, end_to_addr); 1387 assert(length == count, ""); // else fix next line: 1388 __ negptr(count); // negate and test the length 1389 __ jccb(Assembler::notZero, L_load_element); 1390 1391 // Empty array: Nothing to do. 1392 __ xorptr(rax, rax); // return 0 on (trivial) success 1393 __ jmp(L_done); 1394 1395 // ======== begin loop ======== 1396 // (Loop is rotated; its entry is L_load_element.) 1397 // Loop control: 1398 // for (count = -count; count != 0; count++) 1399 // Base pointers src, dst are biased by 8*count,to last element. 1400 __ align(OptoLoopAlignment); 1401 1402 __ BIND(L_store_element); 1403 __ movptr(to_element_addr, elem); // store the oop 1404 __ increment(count); // increment the count toward zero 1405 __ jccb(Assembler::zero, L_do_card_marks); 1406 1407 // ======== loop entry is here ======== 1408 __ BIND(L_load_element); 1409 __ movptr(elem, from_element_addr); // load the oop 1410 __ testptr(elem, elem); 1411 __ jccb(Assembler::zero, L_store_element); 1412 1413 // (Could do a trick here: Remember last successful non-null 1414 // element stored and make a quick oop equality check on it.) 1415 1416 __ movptr(elem_klass, elem_klass_addr); // query the object klass 1417 generate_type_check(elem_klass, ckoff_arg, ckval_arg, temp, 1418 &L_store_element, NULL); 1419 // (On fall-through, we have failed the element type check.) 1420 // ======== end loop ======== 1421 1422 // It was a real error; we must depend on the caller to finish the job. 1423 // Register "count" = -1 * number of *remaining* oops, length_arg = *total* oops. 1424 // Emit GC store barriers for the oops we have copied (length_arg + count), 1425 // and report their number to the caller. 1426 assert_different_registers(to, count, rax); 1427 Label L_post_barrier; 1428 __ addl(count, length_arg); // transfers = (length - remaining) 1429 __ movl2ptr(rax, count); // save the value 1430 __ notptr(rax); // report (-1^K) to caller (does not affect flags) 1431 __ jccb(Assembler::notZero, L_post_barrier); 1432 __ jmp(L_done); // K == 0, nothing was copied, skip post barrier 1433 1434 // Come here on success only. 1435 __ BIND(L_do_card_marks); 1436 __ xorptr(rax, rax); // return 0 on success 1437 __ movl2ptr(count, length_arg); 1438 1439 __ BIND(L_post_barrier); 1440 __ movptr(to, to_arg); // reload 1441 bs->arraycopy_epilogue(_masm, decorators, type, from, to, count); 1442 1443 // Common exit point (success or failure). 1444 __ BIND(L_done); 1445 __ pop(rbx); 1446 __ pop(rdi); 1447 __ pop(rsi); 1448 inc_counter_np(SharedRuntime::_checkcast_array_copy_ctr); 1449 __ leave(); // required for proper stackwalking of RuntimeStub frame 1450 __ ret(0); 1451 1452 return start; 1453 } 1454 1455 // 1456 // Generate 'unsafe' array copy stub 1457 // Though just as safe as the other stubs, it takes an unscaled 1458 // size_t argument instead of an element count. 1459 // 1460 // Input: 1461 // 4(rsp) - source array address 1462 // 8(rsp) - destination array address 1463 // 12(rsp) - byte count, can be zero 1464 // 1465 // Output: 1466 // rax, == 0 - success 1467 // rax, == -1 - need to call System.arraycopy 1468 // 1469 // Examines the alignment of the operands and dispatches 1470 // to a long, int, short, or byte copy loop. 1471 // 1472 address generate_unsafe_copy(const char *name, 1473 address byte_copy_entry, 1474 address short_copy_entry, 1475 address int_copy_entry, 1476 address long_copy_entry) { 1477 1478 Label L_long_aligned, L_int_aligned, L_short_aligned; 1479 1480 __ align(CodeEntryAlignment); 1481 StubCodeMark mark(this, "StubRoutines", name); 1482 address start = __ pc(); 1483 1484 const Register from = rax; // source array address 1485 const Register to = rdx; // destination array address 1486 const Register count = rcx; // elements count 1487 1488 __ enter(); // required for proper stackwalking of RuntimeStub frame 1489 __ push(rsi); 1490 __ push(rdi); 1491 Address from_arg(rsp, 12+ 4); // from 1492 Address to_arg(rsp, 12+ 8); // to 1493 Address count_arg(rsp, 12+12); // byte count 1494 1495 // Load up: 1496 __ movptr(from , from_arg); 1497 __ movptr(to , to_arg); 1498 __ movl2ptr(count, count_arg); 1499 1500 // bump this on entry, not on exit: 1501 inc_counter_np(SharedRuntime::_unsafe_array_copy_ctr); 1502 1503 const Register bits = rsi; 1504 __ mov(bits, from); 1505 __ orptr(bits, to); 1506 __ orptr(bits, count); 1507 1508 __ testl(bits, BytesPerLong-1); 1509 __ jccb(Assembler::zero, L_long_aligned); 1510 1511 __ testl(bits, BytesPerInt-1); 1512 __ jccb(Assembler::zero, L_int_aligned); 1513 1514 __ testl(bits, BytesPerShort-1); 1515 __ jump_cc(Assembler::notZero, RuntimeAddress(byte_copy_entry)); 1516 1517 __ BIND(L_short_aligned); 1518 __ shrptr(count, LogBytesPerShort); // size => short_count 1519 __ movl(count_arg, count); // update 'count' 1520 __ jump(RuntimeAddress(short_copy_entry)); 1521 1522 __ BIND(L_int_aligned); 1523 __ shrptr(count, LogBytesPerInt); // size => int_count 1524 __ movl(count_arg, count); // update 'count' 1525 __ jump(RuntimeAddress(int_copy_entry)); 1526 1527 __ BIND(L_long_aligned); 1528 __ shrptr(count, LogBytesPerLong); // size => qword_count 1529 __ movl(count_arg, count); // update 'count' 1530 __ pop(rdi); // Do pops here since jlong_arraycopy stub does not do it. 1531 __ pop(rsi); 1532 __ jump(RuntimeAddress(long_copy_entry)); 1533 1534 return start; 1535 } 1536 1537 1538 // Perform range checks on the proposed arraycopy. 1539 // Smashes src_pos and dst_pos. (Uses them up for temps.) 1540 void arraycopy_range_checks(Register src, 1541 Register src_pos, 1542 Register dst, 1543 Register dst_pos, 1544 Address& length, 1545 Label& L_failed) { 1546 BLOCK_COMMENT("arraycopy_range_checks:"); 1547 const Register src_end = src_pos; // source array end position 1548 const Register dst_end = dst_pos; // destination array end position 1549 __ addl(src_end, length); // src_pos + length 1550 __ addl(dst_end, length); // dst_pos + length 1551 1552 // if (src_pos + length > arrayOop(src)->length() ) FAIL; 1553 __ cmpl(src_end, Address(src, arrayOopDesc::length_offset_in_bytes())); 1554 __ jcc(Assembler::above, L_failed); 1555 1556 // if (dst_pos + length > arrayOop(dst)->length() ) FAIL; 1557 __ cmpl(dst_end, Address(dst, arrayOopDesc::length_offset_in_bytes())); 1558 __ jcc(Assembler::above, L_failed); 1559 1560 BLOCK_COMMENT("arraycopy_range_checks done"); 1561 } 1562 1563 1564 // 1565 // Generate generic array copy stubs 1566 // 1567 // Input: 1568 // 4(rsp) - src oop 1569 // 8(rsp) - src_pos 1570 // 12(rsp) - dst oop 1571 // 16(rsp) - dst_pos 1572 // 20(rsp) - element count 1573 // 1574 // Output: 1575 // rax, == 0 - success 1576 // rax, == -1^K - failure, where K is partial transfer count 1577 // 1578 address generate_generic_copy(const char *name, 1579 address entry_jbyte_arraycopy, 1580 address entry_jshort_arraycopy, 1581 address entry_jint_arraycopy, 1582 address entry_oop_arraycopy, 1583 address entry_jlong_arraycopy, 1584 address entry_checkcast_arraycopy) { 1585 Label L_failed, L_failed_0, L_objArray; 1586 1587 { int modulus = CodeEntryAlignment; 1588 int target = modulus - 5; // 5 = sizeof jmp(L_failed) 1589 int advance = target - (__ offset() % modulus); 1590 if (advance < 0) advance += modulus; 1591 if (advance > 0) __ nop(advance); 1592 } 1593 StubCodeMark mark(this, "StubRoutines", name); 1594 1595 // Short-hop target to L_failed. Makes for denser prologue code. 1596 __ BIND(L_failed_0); 1597 __ jmp(L_failed); 1598 assert(__ offset() % CodeEntryAlignment == 0, "no further alignment needed"); 1599 1600 __ align(CodeEntryAlignment); 1601 address start = __ pc(); 1602 1603 __ enter(); // required for proper stackwalking of RuntimeStub frame 1604 __ push(rsi); 1605 __ push(rdi); 1606 1607 // bump this on entry, not on exit: 1608 inc_counter_np(SharedRuntime::_generic_array_copy_ctr); 1609 1610 // Input values 1611 Address SRC (rsp, 12+ 4); 1612 Address SRC_POS (rsp, 12+ 8); 1613 Address DST (rsp, 12+12); 1614 Address DST_POS (rsp, 12+16); 1615 Address LENGTH (rsp, 12+20); 1616 1617 //----------------------------------------------------------------------- 1618 // Assembler stub will be used for this call to arraycopy 1619 // if the following conditions are met: 1620 // 1621 // (1) src and dst must not be null. 1622 // (2) src_pos must not be negative. 1623 // (3) dst_pos must not be negative. 1624 // (4) length must not be negative. 1625 // (5) src klass and dst klass should be the same and not NULL. 1626 // (6) src and dst should be arrays. 1627 // (7) src_pos + length must not exceed length of src. 1628 // (8) dst_pos + length must not exceed length of dst. 1629 // 1630 1631 const Register src = rax; // source array oop 1632 const Register src_pos = rsi; 1633 const Register dst = rdx; // destination array oop 1634 const Register dst_pos = rdi; 1635 const Register length = rcx; // transfer count 1636 1637 // if (src == NULL) return -1; 1638 __ movptr(src, SRC); // src oop 1639 __ testptr(src, src); 1640 __ jccb(Assembler::zero, L_failed_0); 1641 1642 // if (src_pos < 0) return -1; 1643 __ movl2ptr(src_pos, SRC_POS); // src_pos 1644 __ testl(src_pos, src_pos); 1645 __ jccb(Assembler::negative, L_failed_0); 1646 1647 // if (dst == NULL) return -1; 1648 __ movptr(dst, DST); // dst oop 1649 __ testptr(dst, dst); 1650 __ jccb(Assembler::zero, L_failed_0); 1651 1652 // if (dst_pos < 0) return -1; 1653 __ movl2ptr(dst_pos, DST_POS); // dst_pos 1654 __ testl(dst_pos, dst_pos); 1655 __ jccb(Assembler::negative, L_failed_0); 1656 1657 // if (length < 0) return -1; 1658 __ movl2ptr(length, LENGTH); // length 1659 __ testl(length, length); 1660 __ jccb(Assembler::negative, L_failed_0); 1661 1662 // if (src->klass() == NULL) return -1; 1663 Address src_klass_addr(src, oopDesc::klass_offset_in_bytes()); 1664 Address dst_klass_addr(dst, oopDesc::klass_offset_in_bytes()); 1665 const Register rcx_src_klass = rcx; // array klass 1666 __ movptr(rcx_src_klass, Address(src, oopDesc::klass_offset_in_bytes())); 1667 1668 #ifdef ASSERT 1669 // assert(src->klass() != NULL); 1670 BLOCK_COMMENT("assert klasses not null"); 1671 { Label L1, L2; 1672 __ testptr(rcx_src_klass, rcx_src_klass); 1673 __ jccb(Assembler::notZero, L2); // it is broken if klass is NULL 1674 __ bind(L1); 1675 __ stop("broken null klass"); 1676 __ bind(L2); 1677 __ cmpptr(dst_klass_addr, (int32_t)NULL_WORD); 1678 __ jccb(Assembler::equal, L1); // this would be broken also 1679 BLOCK_COMMENT("assert done"); 1680 } 1681 #endif //ASSERT 1682 1683 // Load layout helper (32-bits) 1684 // 1685 // |array_tag| | header_size | element_type | |log2_element_size| 1686 // 32 30 24 16 8 2 0 1687 // 1688 // array_tag: typeArray = 0x3, objArray = 0x2, non-array = 0x0 1689 // 1690 1691 int lh_offset = in_bytes(Klass::layout_helper_offset()); 1692 Address src_klass_lh_addr(rcx_src_klass, lh_offset); 1693 1694 // Handle objArrays completely differently... 1695 jint objArray_lh = Klass::array_layout_helper(T_OBJECT); 1696 __ cmpl(src_klass_lh_addr, objArray_lh); 1697 __ jcc(Assembler::equal, L_objArray); 1698 1699 // if (src->klass() != dst->klass()) return -1; 1700 __ cmpptr(rcx_src_klass, dst_klass_addr); 1701 __ jccb(Assembler::notEqual, L_failed_0); 1702 1703 const Register rcx_lh = rcx; // layout helper 1704 assert(rcx_lh == rcx_src_klass, "known alias"); 1705 __ movl(rcx_lh, src_klass_lh_addr); 1706 1707 // if (!src->is_Array()) return -1; 1708 __ cmpl(rcx_lh, Klass::_lh_neutral_value); 1709 __ jcc(Assembler::greaterEqual, L_failed_0); // signed cmp 1710 1711 // At this point, it is known to be a typeArray (array_tag 0x3). 1712 #ifdef ASSERT 1713 { Label L; 1714 __ cmpl(rcx_lh, (Klass::_lh_array_tag_type_value << Klass::_lh_array_tag_shift)); 1715 __ jcc(Assembler::greaterEqual, L); // signed cmp 1716 __ stop("must be a primitive array"); 1717 __ bind(L); 1718 } 1719 #endif 1720 1721 assert_different_registers(src, src_pos, dst, dst_pos, rcx_lh); 1722 arraycopy_range_checks(src, src_pos, dst, dst_pos, LENGTH, L_failed); 1723 1724 // TypeArrayKlass 1725 // 1726 // src_addr = (src + array_header_in_bytes()) + (src_pos << log2elemsize); 1727 // dst_addr = (dst + array_header_in_bytes()) + (dst_pos << log2elemsize); 1728 // 1729 const Register rsi_offset = rsi; // array offset 1730 const Register src_array = src; // src array offset 1731 const Register dst_array = dst; // dst array offset 1732 const Register rdi_elsize = rdi; // log2 element size 1733 1734 __ mov(rsi_offset, rcx_lh); 1735 __ shrptr(rsi_offset, Klass::_lh_header_size_shift); 1736 __ andptr(rsi_offset, Klass::_lh_header_size_mask); // array_offset 1737 __ addptr(src_array, rsi_offset); // src array offset 1738 __ addptr(dst_array, rsi_offset); // dst array offset 1739 __ andptr(rcx_lh, Klass::_lh_log2_element_size_mask); // log2 elsize 1740 1741 // next registers should be set before the jump to corresponding stub 1742 const Register from = src; // source array address 1743 const Register to = dst; // destination array address 1744 const Register count = rcx; // elements count 1745 // some of them should be duplicated on stack 1746 #define FROM Address(rsp, 12+ 4) 1747 #define TO Address(rsp, 12+ 8) // Not used now 1748 #define COUNT Address(rsp, 12+12) // Only for oop arraycopy 1749 1750 BLOCK_COMMENT("scale indexes to element size"); 1751 __ movl2ptr(rsi, SRC_POS); // src_pos 1752 __ shlptr(rsi); // src_pos << rcx (log2 elsize) 1753 assert(src_array == from, ""); 1754 __ addptr(from, rsi); // from = src_array + SRC_POS << log2 elsize 1755 __ movl2ptr(rdi, DST_POS); // dst_pos 1756 __ shlptr(rdi); // dst_pos << rcx (log2 elsize) 1757 assert(dst_array == to, ""); 1758 __ addptr(to, rdi); // to = dst_array + DST_POS << log2 elsize 1759 __ movptr(FROM, from); // src_addr 1760 __ mov(rdi_elsize, rcx_lh); // log2 elsize 1761 __ movl2ptr(count, LENGTH); // elements count 1762 1763 BLOCK_COMMENT("choose copy loop based on element size"); 1764 __ cmpl(rdi_elsize, 0); 1765 1766 __ jump_cc(Assembler::equal, RuntimeAddress(entry_jbyte_arraycopy)); 1767 __ cmpl(rdi_elsize, LogBytesPerShort); 1768 __ jump_cc(Assembler::equal, RuntimeAddress(entry_jshort_arraycopy)); 1769 __ cmpl(rdi_elsize, LogBytesPerInt); 1770 __ jump_cc(Assembler::equal, RuntimeAddress(entry_jint_arraycopy)); 1771 #ifdef ASSERT 1772 __ cmpl(rdi_elsize, LogBytesPerLong); 1773 __ jccb(Assembler::notEqual, L_failed); 1774 #endif 1775 __ pop(rdi); // Do pops here since jlong_arraycopy stub does not do it. 1776 __ pop(rsi); 1777 __ jump(RuntimeAddress(entry_jlong_arraycopy)); 1778 1779 __ BIND(L_failed); 1780 __ xorptr(rax, rax); 1781 __ notptr(rax); // return -1 1782 __ pop(rdi); 1783 __ pop(rsi); 1784 __ leave(); // required for proper stackwalking of RuntimeStub frame 1785 __ ret(0); 1786 1787 // ObjArrayKlass 1788 __ BIND(L_objArray); 1789 // live at this point: rcx_src_klass, src[_pos], dst[_pos] 1790 1791 Label L_plain_copy, L_checkcast_copy; 1792 // test array classes for subtyping 1793 __ cmpptr(rcx_src_klass, dst_klass_addr); // usual case is exact equality 1794 __ jccb(Assembler::notEqual, L_checkcast_copy); 1795 1796 // Identically typed arrays can be copied without element-wise checks. 1797 assert_different_registers(src, src_pos, dst, dst_pos, rcx_src_klass); 1798 arraycopy_range_checks(src, src_pos, dst, dst_pos, LENGTH, L_failed); 1799 1800 __ BIND(L_plain_copy); 1801 __ movl2ptr(count, LENGTH); // elements count 1802 __ movl2ptr(src_pos, SRC_POS); // reload src_pos 1803 __ lea(from, Address(src, src_pos, Address::times_ptr, 1804 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // src_addr 1805 __ movl2ptr(dst_pos, DST_POS); // reload dst_pos 1806 __ lea(to, Address(dst, dst_pos, Address::times_ptr, 1807 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // dst_addr 1808 __ movptr(FROM, from); // src_addr 1809 __ movptr(TO, to); // dst_addr 1810 __ movl(COUNT, count); // count 1811 __ jump(RuntimeAddress(entry_oop_arraycopy)); 1812 1813 __ BIND(L_checkcast_copy); 1814 // live at this point: rcx_src_klass, dst[_pos], src[_pos] 1815 { 1816 // Handy offsets: 1817 int ek_offset = in_bytes(ObjArrayKlass::element_klass_offset()); 1818 int sco_offset = in_bytes(Klass::super_check_offset_offset()); 1819 1820 Register rsi_dst_klass = rsi; 1821 Register rdi_temp = rdi; 1822 assert(rsi_dst_klass == src_pos, "expected alias w/ src_pos"); 1823 assert(rdi_temp == dst_pos, "expected alias w/ dst_pos"); 1824 Address dst_klass_lh_addr(rsi_dst_klass, lh_offset); 1825 1826 // Before looking at dst.length, make sure dst is also an objArray. 1827 __ movptr(rsi_dst_klass, dst_klass_addr); 1828 __ cmpl(dst_klass_lh_addr, objArray_lh); 1829 __ jccb(Assembler::notEqual, L_failed); 1830 1831 // It is safe to examine both src.length and dst.length. 1832 __ movl2ptr(src_pos, SRC_POS); // reload rsi 1833 arraycopy_range_checks(src, src_pos, dst, dst_pos, LENGTH, L_failed); 1834 // (Now src_pos and dst_pos are killed, but not src and dst.) 1835 1836 // We'll need this temp (don't forget to pop it after the type check). 1837 __ push(rbx); 1838 Register rbx_src_klass = rbx; 1839 1840 __ mov(rbx_src_klass, rcx_src_klass); // spill away from rcx 1841 __ movptr(rsi_dst_klass, dst_klass_addr); 1842 Address super_check_offset_addr(rsi_dst_klass, sco_offset); 1843 Label L_fail_array_check; 1844 generate_type_check(rbx_src_klass, 1845 super_check_offset_addr, dst_klass_addr, 1846 rdi_temp, NULL, &L_fail_array_check); 1847 // (On fall-through, we have passed the array type check.) 1848 __ pop(rbx); 1849 __ jmp(L_plain_copy); 1850 1851 __ BIND(L_fail_array_check); 1852 // Reshuffle arguments so we can call checkcast_arraycopy: 1853 1854 // match initial saves for checkcast_arraycopy 1855 // push(rsi); // already done; see above 1856 // push(rdi); // already done; see above 1857 // push(rbx); // already done; see above 1858 1859 // Marshal outgoing arguments now, freeing registers. 1860 Address from_arg(rsp, 16+ 4); // from 1861 Address to_arg(rsp, 16+ 8); // to 1862 Address length_arg(rsp, 16+12); // elements count 1863 Address ckoff_arg(rsp, 16+16); // super_check_offset 1864 Address ckval_arg(rsp, 16+20); // super_klass 1865 1866 Address SRC_POS_arg(rsp, 16+ 8); 1867 Address DST_POS_arg(rsp, 16+16); 1868 Address LENGTH_arg(rsp, 16+20); 1869 // push rbx, changed the incoming offsets (why not just use rbp,??) 1870 // assert(SRC_POS_arg.disp() == SRC_POS.disp() + 4, ""); 1871 1872 __ movptr(rbx, Address(rsi_dst_klass, ek_offset)); 1873 __ movl2ptr(length, LENGTH_arg); // reload elements count 1874 __ movl2ptr(src_pos, SRC_POS_arg); // reload src_pos 1875 __ movl2ptr(dst_pos, DST_POS_arg); // reload dst_pos 1876 1877 __ movptr(ckval_arg, rbx); // destination element type 1878 __ movl(rbx, Address(rbx, sco_offset)); 1879 __ movl(ckoff_arg, rbx); // corresponding class check offset 1880 1881 __ movl(length_arg, length); // outgoing length argument 1882 1883 __ lea(from, Address(src, src_pos, Address::times_ptr, 1884 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); 1885 __ movptr(from_arg, from); 1886 1887 __ lea(to, Address(dst, dst_pos, Address::times_ptr, 1888 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); 1889 __ movptr(to_arg, to); 1890 __ jump(RuntimeAddress(entry_checkcast_arraycopy)); 1891 } 1892 1893 return start; 1894 } 1895 1896 void generate_arraycopy_stubs() { 1897 address entry; 1898 address entry_jbyte_arraycopy; 1899 address entry_jshort_arraycopy; 1900 address entry_jint_arraycopy; 1901 address entry_oop_arraycopy; 1902 address entry_jlong_arraycopy; 1903 address entry_checkcast_arraycopy; 1904 1905 StubRoutines::_arrayof_jbyte_disjoint_arraycopy = 1906 generate_disjoint_copy(T_BYTE, true, Address::times_1, &entry, 1907 "arrayof_jbyte_disjoint_arraycopy"); 1908 StubRoutines::_arrayof_jbyte_arraycopy = 1909 generate_conjoint_copy(T_BYTE, true, Address::times_1, entry, 1910 NULL, "arrayof_jbyte_arraycopy"); 1911 StubRoutines::_jbyte_disjoint_arraycopy = 1912 generate_disjoint_copy(T_BYTE, false, Address::times_1, &entry, 1913 "jbyte_disjoint_arraycopy"); 1914 StubRoutines::_jbyte_arraycopy = 1915 generate_conjoint_copy(T_BYTE, false, Address::times_1, entry, 1916 &entry_jbyte_arraycopy, "jbyte_arraycopy"); 1917 1918 StubRoutines::_arrayof_jshort_disjoint_arraycopy = 1919 generate_disjoint_copy(T_SHORT, true, Address::times_2, &entry, 1920 "arrayof_jshort_disjoint_arraycopy"); 1921 StubRoutines::_arrayof_jshort_arraycopy = 1922 generate_conjoint_copy(T_SHORT, true, Address::times_2, entry, 1923 NULL, "arrayof_jshort_arraycopy"); 1924 StubRoutines::_jshort_disjoint_arraycopy = 1925 generate_disjoint_copy(T_SHORT, false, Address::times_2, &entry, 1926 "jshort_disjoint_arraycopy"); 1927 StubRoutines::_jshort_arraycopy = 1928 generate_conjoint_copy(T_SHORT, false, Address::times_2, entry, 1929 &entry_jshort_arraycopy, "jshort_arraycopy"); 1930 1931 // Next arrays are always aligned on 4 bytes at least. 1932 StubRoutines::_jint_disjoint_arraycopy = 1933 generate_disjoint_copy(T_INT, true, Address::times_4, &entry, 1934 "jint_disjoint_arraycopy"); 1935 StubRoutines::_jint_arraycopy = 1936 generate_conjoint_copy(T_INT, true, Address::times_4, entry, 1937 &entry_jint_arraycopy, "jint_arraycopy"); 1938 1939 StubRoutines::_oop_disjoint_arraycopy = 1940 generate_disjoint_copy(T_OBJECT, true, Address::times_ptr, &entry, 1941 "oop_disjoint_arraycopy"); 1942 StubRoutines::_oop_arraycopy = 1943 generate_conjoint_copy(T_OBJECT, true, Address::times_ptr, entry, 1944 &entry_oop_arraycopy, "oop_arraycopy"); 1945 1946 StubRoutines::_oop_disjoint_arraycopy_uninit = 1947 generate_disjoint_copy(T_OBJECT, true, Address::times_ptr, &entry, 1948 "oop_disjoint_arraycopy_uninit", 1949 /*dest_uninitialized*/true); 1950 StubRoutines::_oop_arraycopy_uninit = 1951 generate_conjoint_copy(T_OBJECT, true, Address::times_ptr, entry, 1952 NULL, "oop_arraycopy_uninit", 1953 /*dest_uninitialized*/true); 1954 1955 StubRoutines::_jlong_disjoint_arraycopy = 1956 generate_disjoint_long_copy(&entry, "jlong_disjoint_arraycopy"); 1957 StubRoutines::_jlong_arraycopy = 1958 generate_conjoint_long_copy(entry, &entry_jlong_arraycopy, 1959 "jlong_arraycopy"); 1960 1961 StubRoutines::_jbyte_fill = generate_fill(T_BYTE, false, "jbyte_fill"); 1962 StubRoutines::_jshort_fill = generate_fill(T_SHORT, false, "jshort_fill"); 1963 StubRoutines::_jint_fill = generate_fill(T_INT, false, "jint_fill"); 1964 StubRoutines::_arrayof_jbyte_fill = generate_fill(T_BYTE, true, "arrayof_jbyte_fill"); 1965 StubRoutines::_arrayof_jshort_fill = generate_fill(T_SHORT, true, "arrayof_jshort_fill"); 1966 StubRoutines::_arrayof_jint_fill = generate_fill(T_INT, true, "arrayof_jint_fill"); 1967 1968 StubRoutines::_arrayof_jint_disjoint_arraycopy = StubRoutines::_jint_disjoint_arraycopy; 1969 StubRoutines::_arrayof_oop_disjoint_arraycopy = StubRoutines::_oop_disjoint_arraycopy; 1970 StubRoutines::_arrayof_oop_disjoint_arraycopy_uninit = StubRoutines::_oop_disjoint_arraycopy_uninit; 1971 StubRoutines::_arrayof_jlong_disjoint_arraycopy = StubRoutines::_jlong_disjoint_arraycopy; 1972 1973 StubRoutines::_arrayof_jint_arraycopy = StubRoutines::_jint_arraycopy; 1974 StubRoutines::_arrayof_oop_arraycopy = StubRoutines::_oop_arraycopy; 1975 StubRoutines::_arrayof_oop_arraycopy_uninit = StubRoutines::_oop_arraycopy_uninit; 1976 StubRoutines::_arrayof_jlong_arraycopy = StubRoutines::_jlong_arraycopy; 1977 1978 StubRoutines::_checkcast_arraycopy = 1979 generate_checkcast_copy("checkcast_arraycopy", &entry_checkcast_arraycopy); 1980 StubRoutines::_checkcast_arraycopy_uninit = 1981 generate_checkcast_copy("checkcast_arraycopy_uninit", NULL, /*dest_uninitialized*/true); 1982 1983 StubRoutines::_unsafe_arraycopy = 1984 generate_unsafe_copy("unsafe_arraycopy", 1985 entry_jbyte_arraycopy, 1986 entry_jshort_arraycopy, 1987 entry_jint_arraycopy, 1988 entry_jlong_arraycopy); 1989 1990 StubRoutines::_generic_arraycopy = 1991 generate_generic_copy("generic_arraycopy", 1992 entry_jbyte_arraycopy, 1993 entry_jshort_arraycopy, 1994 entry_jint_arraycopy, 1995 entry_oop_arraycopy, 1996 entry_jlong_arraycopy, 1997 entry_checkcast_arraycopy); 1998 } 1999 2000 // AES intrinsic stubs 2001 enum {AESBlockSize = 16}; 2002 2003 address generate_key_shuffle_mask() { 2004 __ align(16); 2005 StubCodeMark mark(this, "StubRoutines", "key_shuffle_mask"); 2006 address start = __ pc(); 2007 __ emit_data(0x00010203, relocInfo::none, 0 ); 2008 __ emit_data(0x04050607, relocInfo::none, 0 ); 2009 __ emit_data(0x08090a0b, relocInfo::none, 0 ); 2010 __ emit_data(0x0c0d0e0f, relocInfo::none, 0 ); 2011 return start; 2012 } 2013 2014 address generate_counter_shuffle_mask() { 2015 __ align(16); 2016 StubCodeMark mark(this, "StubRoutines", "counter_shuffle_mask"); 2017 address start = __ pc(); 2018 __ emit_data(0x0c0d0e0f, relocInfo::none, 0); 2019 __ emit_data(0x08090a0b, relocInfo::none, 0); 2020 __ emit_data(0x04050607, relocInfo::none, 0); 2021 __ emit_data(0x00010203, relocInfo::none, 0); 2022 return start; 2023 } 2024 2025 // Utility routine for loading a 128-bit key word in little endian format 2026 // can optionally specify that the shuffle mask is already in an xmmregister 2027 void load_key(XMMRegister xmmdst, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) { 2028 __ movdqu(xmmdst, Address(key, offset)); 2029 if (xmm_shuf_mask != NULL) { 2030 __ pshufb(xmmdst, xmm_shuf_mask); 2031 } else { 2032 __ pshufb(xmmdst, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); 2033 } 2034 } 2035 2036 // aesenc using specified key+offset 2037 // can optionally specify that the shuffle mask is already in an xmmregister 2038 void aes_enc_key(XMMRegister xmmdst, XMMRegister xmmtmp, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) { 2039 load_key(xmmtmp, key, offset, xmm_shuf_mask); 2040 __ aesenc(xmmdst, xmmtmp); 2041 } 2042 2043 // aesdec using specified key+offset 2044 // can optionally specify that the shuffle mask is already in an xmmregister 2045 void aes_dec_key(XMMRegister xmmdst, XMMRegister xmmtmp, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) { 2046 load_key(xmmtmp, key, offset, xmm_shuf_mask); 2047 __ aesdec(xmmdst, xmmtmp); 2048 } 2049 2050 // Utility routine for increase 128bit counter (iv in CTR mode) 2051 // XMM_128bit, D3, D2, D1, D0 2052 void inc_counter(Register reg, XMMRegister xmmdst, int inc_delta, Label& next_block) { 2053 __ pextrd(reg, xmmdst, 0x0); 2054 __ addl(reg, inc_delta); 2055 __ pinsrd(xmmdst, reg, 0x0); 2056 __ jcc(Assembler::carryClear, next_block); // jump if no carry 2057 2058 __ pextrd(reg, xmmdst, 0x01); // Carry-> D1 2059 __ addl(reg, 0x01); 2060 __ pinsrd(xmmdst, reg, 0x01); 2061 __ jcc(Assembler::carryClear, next_block); // jump if no carry 2062 2063 __ pextrd(reg, xmmdst, 0x02); // Carry-> D2 2064 __ addl(reg, 0x01); 2065 __ pinsrd(xmmdst, reg, 0x02); 2066 __ jcc(Assembler::carryClear, next_block); // jump if no carry 2067 2068 __ pextrd(reg, xmmdst, 0x03); // Carry -> D3 2069 __ addl(reg, 0x01); 2070 __ pinsrd(xmmdst, reg, 0x03); 2071 2072 __ BIND(next_block); // next instruction 2073 } 2074 2075 2076 // Arguments: 2077 // 2078 // Inputs: 2079 // c_rarg0 - source byte array address 2080 // c_rarg1 - destination byte array address 2081 // c_rarg2 - K (key) in little endian int array 2082 // 2083 address generate_aescrypt_encryptBlock() { 2084 assert(UseAES, "need AES instructions and misaligned SSE support"); 2085 __ align(CodeEntryAlignment); 2086 StubCodeMark mark(this, "StubRoutines", "aescrypt_encryptBlock"); 2087 Label L_doLast; 2088 address start = __ pc(); 2089 2090 const Register from = rdx; // source array address 2091 const Register to = rdx; // destination array address 2092 const Register key = rcx; // key array address 2093 const Register keylen = rax; 2094 const Address from_param(rbp, 8+0); 2095 const Address to_param (rbp, 8+4); 2096 const Address key_param (rbp, 8+8); 2097 2098 const XMMRegister xmm_result = xmm0; 2099 const XMMRegister xmm_key_shuf_mask = xmm1; 2100 const XMMRegister xmm_temp1 = xmm2; 2101 const XMMRegister xmm_temp2 = xmm3; 2102 const XMMRegister xmm_temp3 = xmm4; 2103 const XMMRegister xmm_temp4 = xmm5; 2104 2105 __ enter(); // required for proper stackwalking of RuntimeStub frame 2106 2107 __ movptr(from, from_param); 2108 __ movptr(key, key_param); 2109 2110 // keylen could be only {11, 13, 15} * 4 = {44, 52, 60} 2111 __ movl(keylen, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); 2112 2113 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); 2114 __ movdqu(xmm_result, Address(from, 0)); // get 16 bytes of input 2115 __ movptr(to, to_param); 2116 2117 // For encryption, the java expanded key ordering is just what we need 2118 2119 load_key(xmm_temp1, key, 0x00, xmm_key_shuf_mask); 2120 __ pxor(xmm_result, xmm_temp1); 2121 2122 load_key(xmm_temp1, key, 0x10, xmm_key_shuf_mask); 2123 load_key(xmm_temp2, key, 0x20, xmm_key_shuf_mask); 2124 load_key(xmm_temp3, key, 0x30, xmm_key_shuf_mask); 2125 load_key(xmm_temp4, key, 0x40, xmm_key_shuf_mask); 2126 2127 __ aesenc(xmm_result, xmm_temp1); 2128 __ aesenc(xmm_result, xmm_temp2); 2129 __ aesenc(xmm_result, xmm_temp3); 2130 __ aesenc(xmm_result, xmm_temp4); 2131 2132 load_key(xmm_temp1, key, 0x50, xmm_key_shuf_mask); 2133 load_key(xmm_temp2, key, 0x60, xmm_key_shuf_mask); 2134 load_key(xmm_temp3, key, 0x70, xmm_key_shuf_mask); 2135 load_key(xmm_temp4, key, 0x80, xmm_key_shuf_mask); 2136 2137 __ aesenc(xmm_result, xmm_temp1); 2138 __ aesenc(xmm_result, xmm_temp2); 2139 __ aesenc(xmm_result, xmm_temp3); 2140 __ aesenc(xmm_result, xmm_temp4); 2141 2142 load_key(xmm_temp1, key, 0x90, xmm_key_shuf_mask); 2143 load_key(xmm_temp2, key, 0xa0, xmm_key_shuf_mask); 2144 2145 __ cmpl(keylen, 44); 2146 __ jccb(Assembler::equal, L_doLast); 2147 2148 __ aesenc(xmm_result, xmm_temp1); 2149 __ aesenc(xmm_result, xmm_temp2); 2150 2151 load_key(xmm_temp1, key, 0xb0, xmm_key_shuf_mask); 2152 load_key(xmm_temp2, key, 0xc0, xmm_key_shuf_mask); 2153 2154 __ cmpl(keylen, 52); 2155 __ jccb(Assembler::equal, L_doLast); 2156 2157 __ aesenc(xmm_result, xmm_temp1); 2158 __ aesenc(xmm_result, xmm_temp2); 2159 2160 load_key(xmm_temp1, key, 0xd0, xmm_key_shuf_mask); 2161 load_key(xmm_temp2, key, 0xe0, xmm_key_shuf_mask); 2162 2163 __ BIND(L_doLast); 2164 __ aesenc(xmm_result, xmm_temp1); 2165 __ aesenclast(xmm_result, xmm_temp2); 2166 __ movdqu(Address(to, 0), xmm_result); // store the result 2167 __ xorptr(rax, rax); // return 0 2168 __ leave(); // required for proper stackwalking of RuntimeStub frame 2169 __ ret(0); 2170 2171 return start; 2172 } 2173 2174 2175 // Arguments: 2176 // 2177 // Inputs: 2178 // c_rarg0 - source byte array address 2179 // c_rarg1 - destination byte array address 2180 // c_rarg2 - K (key) in little endian int array 2181 // 2182 address generate_aescrypt_decryptBlock() { 2183 assert(UseAES, "need AES instructions and misaligned SSE support"); 2184 __ align(CodeEntryAlignment); 2185 StubCodeMark mark(this, "StubRoutines", "aescrypt_decryptBlock"); 2186 Label L_doLast; 2187 address start = __ pc(); 2188 2189 const Register from = rdx; // source array address 2190 const Register to = rdx; // destination array address 2191 const Register key = rcx; // key array address 2192 const Register keylen = rax; 2193 const Address from_param(rbp, 8+0); 2194 const Address to_param (rbp, 8+4); 2195 const Address key_param (rbp, 8+8); 2196 2197 const XMMRegister xmm_result = xmm0; 2198 const XMMRegister xmm_key_shuf_mask = xmm1; 2199 const XMMRegister xmm_temp1 = xmm2; 2200 const XMMRegister xmm_temp2 = xmm3; 2201 const XMMRegister xmm_temp3 = xmm4; 2202 const XMMRegister xmm_temp4 = xmm5; 2203 2204 __ enter(); // required for proper stackwalking of RuntimeStub frame 2205 2206 __ movptr(from, from_param); 2207 __ movptr(key, key_param); 2208 2209 // keylen could be only {11, 13, 15} * 4 = {44, 52, 60} 2210 __ movl(keylen, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); 2211 2212 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); 2213 __ movdqu(xmm_result, Address(from, 0)); 2214 __ movptr(to, to_param); 2215 2216 // for decryption java expanded key ordering is rotated one position from what we want 2217 // so we start from 0x10 here and hit 0x00 last 2218 // we don't know if the key is aligned, hence not using load-execute form 2219 load_key(xmm_temp1, key, 0x10, xmm_key_shuf_mask); 2220 load_key(xmm_temp2, key, 0x20, xmm_key_shuf_mask); 2221 load_key(xmm_temp3, key, 0x30, xmm_key_shuf_mask); 2222 load_key(xmm_temp4, key, 0x40, xmm_key_shuf_mask); 2223 2224 __ pxor (xmm_result, xmm_temp1); 2225 __ aesdec(xmm_result, xmm_temp2); 2226 __ aesdec(xmm_result, xmm_temp3); 2227 __ aesdec(xmm_result, xmm_temp4); 2228 2229 load_key(xmm_temp1, key, 0x50, xmm_key_shuf_mask); 2230 load_key(xmm_temp2, key, 0x60, xmm_key_shuf_mask); 2231 load_key(xmm_temp3, key, 0x70, xmm_key_shuf_mask); 2232 load_key(xmm_temp4, key, 0x80, xmm_key_shuf_mask); 2233 2234 __ aesdec(xmm_result, xmm_temp1); 2235 __ aesdec(xmm_result, xmm_temp2); 2236 __ aesdec(xmm_result, xmm_temp3); 2237 __ aesdec(xmm_result, xmm_temp4); 2238 2239 load_key(xmm_temp1, key, 0x90, xmm_key_shuf_mask); 2240 load_key(xmm_temp2, key, 0xa0, xmm_key_shuf_mask); 2241 load_key(xmm_temp3, key, 0x00, xmm_key_shuf_mask); 2242 2243 __ cmpl(keylen, 44); 2244 __ jccb(Assembler::equal, L_doLast); 2245 2246 __ aesdec(xmm_result, xmm_temp1); 2247 __ aesdec(xmm_result, xmm_temp2); 2248 2249 load_key(xmm_temp1, key, 0xb0, xmm_key_shuf_mask); 2250 load_key(xmm_temp2, key, 0xc0, xmm_key_shuf_mask); 2251 2252 __ cmpl(keylen, 52); 2253 __ jccb(Assembler::equal, L_doLast); 2254 2255 __ aesdec(xmm_result, xmm_temp1); 2256 __ aesdec(xmm_result, xmm_temp2); 2257 2258 load_key(xmm_temp1, key, 0xd0, xmm_key_shuf_mask); 2259 load_key(xmm_temp2, key, 0xe0, xmm_key_shuf_mask); 2260 2261 __ BIND(L_doLast); 2262 __ aesdec(xmm_result, xmm_temp1); 2263 __ aesdec(xmm_result, xmm_temp2); 2264 2265 // for decryption the aesdeclast operation is always on key+0x00 2266 __ aesdeclast(xmm_result, xmm_temp3); 2267 __ movdqu(Address(to, 0), xmm_result); // store the result 2268 __ xorptr(rax, rax); // return 0 2269 __ leave(); // required for proper stackwalking of RuntimeStub frame 2270 __ ret(0); 2271 2272 return start; 2273 } 2274 2275 void handleSOERegisters(bool saving) { 2276 const int saveFrameSizeInBytes = 4 * wordSize; 2277 const Address saved_rbx (rbp, -3 * wordSize); 2278 const Address saved_rsi (rbp, -2 * wordSize); 2279 const Address saved_rdi (rbp, -1 * wordSize); 2280 2281 if (saving) { 2282 __ subptr(rsp, saveFrameSizeInBytes); 2283 __ movptr(saved_rsi, rsi); 2284 __ movptr(saved_rdi, rdi); 2285 __ movptr(saved_rbx, rbx); 2286 } else { 2287 // restoring 2288 __ movptr(rsi, saved_rsi); 2289 __ movptr(rdi, saved_rdi); 2290 __ movptr(rbx, saved_rbx); 2291 } 2292 } 2293 2294 // Arguments: 2295 // 2296 // Inputs: 2297 // c_rarg0 - source byte array address 2298 // c_rarg1 - destination byte array address 2299 // c_rarg2 - K (key) in little endian int array 2300 // c_rarg3 - r vector byte array address 2301 // c_rarg4 - input length 2302 // 2303 // Output: 2304 // rax - input length 2305 // 2306 address generate_cipherBlockChaining_encryptAESCrypt() { 2307 assert(UseAES, "need AES instructions and misaligned SSE support"); 2308 __ align(CodeEntryAlignment); 2309 StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_encryptAESCrypt"); 2310 address start = __ pc(); 2311 2312 Label L_exit, L_key_192_256, L_key_256, L_loopTop_128, L_loopTop_192, L_loopTop_256; 2313 const Register from = rsi; // source array address 2314 const Register to = rdx; // destination array address 2315 const Register key = rcx; // key array address 2316 const Register rvec = rdi; // r byte array initialized from initvector array address 2317 // and left with the results of the last encryption block 2318 const Register len_reg = rbx; // src len (must be multiple of blocksize 16) 2319 const Register pos = rax; 2320 2321 // xmm register assignments for the loops below 2322 const XMMRegister xmm_result = xmm0; 2323 const XMMRegister xmm_temp = xmm1; 2324 // first 6 keys preloaded into xmm2-xmm7 2325 const int XMM_REG_NUM_KEY_FIRST = 2; 2326 const int XMM_REG_NUM_KEY_LAST = 7; 2327 const XMMRegister xmm_key0 = as_XMMRegister(XMM_REG_NUM_KEY_FIRST); 2328 2329 __ enter(); // required for proper stackwalking of RuntimeStub frame 2330 handleSOERegisters(true /*saving*/); 2331 2332 // load registers from incoming parameters 2333 const Address from_param(rbp, 8+0); 2334 const Address to_param (rbp, 8+4); 2335 const Address key_param (rbp, 8+8); 2336 const Address rvec_param (rbp, 8+12); 2337 const Address len_param (rbp, 8+16); 2338 __ movptr(from , from_param); 2339 __ movptr(to , to_param); 2340 __ movptr(key , key_param); 2341 __ movptr(rvec , rvec_param); 2342 __ movptr(len_reg , len_param); 2343 2344 const XMMRegister xmm_key_shuf_mask = xmm_temp; // used temporarily to swap key bytes up front 2345 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); 2346 // load up xmm regs 2 thru 7 with keys 0-5 2347 for (int rnum = XMM_REG_NUM_KEY_FIRST, offset = 0x00; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { 2348 load_key(as_XMMRegister(rnum), key, offset, xmm_key_shuf_mask); 2349 offset += 0x10; 2350 } 2351 2352 __ movdqu(xmm_result, Address(rvec, 0x00)); // initialize xmm_result with r vec 2353 2354 // now split to different paths depending on the keylen (len in ints of AESCrypt.KLE array (52=192, or 60=256)) 2355 __ movl(rax, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); 2356 __ cmpl(rax, 44); 2357 __ jcc(Assembler::notEqual, L_key_192_256); 2358 2359 // 128 bit code follows here 2360 __ movl(pos, 0); 2361 __ align(OptoLoopAlignment); 2362 __ BIND(L_loopTop_128); 2363 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input 2364 __ pxor (xmm_result, xmm_temp); // xor with the current r vector 2365 2366 __ pxor (xmm_result, xmm_key0); // do the aes rounds 2367 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { 2368 __ aesenc(xmm_result, as_XMMRegister(rnum)); 2369 } 2370 for (int key_offset = 0x60; key_offset <= 0x90; key_offset += 0x10) { 2371 aes_enc_key(xmm_result, xmm_temp, key, key_offset); 2372 } 2373 load_key(xmm_temp, key, 0xa0); 2374 __ aesenclast(xmm_result, xmm_temp); 2375 2376 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output 2377 // no need to store r to memory until we exit 2378 __ addptr(pos, AESBlockSize); 2379 __ subptr(len_reg, AESBlockSize); 2380 __ jcc(Assembler::notEqual, L_loopTop_128); 2381 2382 __ BIND(L_exit); 2383 __ movdqu(Address(rvec, 0), xmm_result); // final value of r stored in rvec of CipherBlockChaining object 2384 2385 handleSOERegisters(false /*restoring*/); 2386 __ movptr(rax, len_param); // return length 2387 __ leave(); // required for proper stackwalking of RuntimeStub frame 2388 __ ret(0); 2389 2390 __ BIND(L_key_192_256); 2391 // here rax = len in ints of AESCrypt.KLE array (52=192, or 60=256) 2392 __ cmpl(rax, 52); 2393 __ jcc(Assembler::notEqual, L_key_256); 2394 2395 // 192-bit code follows here (could be changed to use more xmm registers) 2396 __ movl(pos, 0); 2397 __ align(OptoLoopAlignment); 2398 __ BIND(L_loopTop_192); 2399 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input 2400 __ pxor (xmm_result, xmm_temp); // xor with the current r vector 2401 2402 __ pxor (xmm_result, xmm_key0); // do the aes rounds 2403 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { 2404 __ aesenc(xmm_result, as_XMMRegister(rnum)); 2405 } 2406 for (int key_offset = 0x60; key_offset <= 0xb0; key_offset += 0x10) { 2407 aes_enc_key(xmm_result, xmm_temp, key, key_offset); 2408 } 2409 load_key(xmm_temp, key, 0xc0); 2410 __ aesenclast(xmm_result, xmm_temp); 2411 2412 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output 2413 // no need to store r to memory until we exit 2414 __ addptr(pos, AESBlockSize); 2415 __ subptr(len_reg, AESBlockSize); 2416 __ jcc(Assembler::notEqual, L_loopTop_192); 2417 __ jmp(L_exit); 2418 2419 __ BIND(L_key_256); 2420 // 256-bit code follows here (could be changed to use more xmm registers) 2421 __ movl(pos, 0); 2422 __ align(OptoLoopAlignment); 2423 __ BIND(L_loopTop_256); 2424 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input 2425 __ pxor (xmm_result, xmm_temp); // xor with the current r vector 2426 2427 __ pxor (xmm_result, xmm_key0); // do the aes rounds 2428 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { 2429 __ aesenc(xmm_result, as_XMMRegister(rnum)); 2430 } 2431 for (int key_offset = 0x60; key_offset <= 0xd0; key_offset += 0x10) { 2432 aes_enc_key(xmm_result, xmm_temp, key, key_offset); 2433 } 2434 load_key(xmm_temp, key, 0xe0); 2435 __ aesenclast(xmm_result, xmm_temp); 2436 2437 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output 2438 // no need to store r to memory until we exit 2439 __ addptr(pos, AESBlockSize); 2440 __ subptr(len_reg, AESBlockSize); 2441 __ jcc(Assembler::notEqual, L_loopTop_256); 2442 __ jmp(L_exit); 2443 2444 return start; 2445 } 2446 2447 2448 // CBC AES Decryption. 2449 // In 32-bit stub, because of lack of registers we do not try to parallelize 4 blocks at a time. 2450 // 2451 // Arguments: 2452 // 2453 // Inputs: 2454 // c_rarg0 - source byte array address 2455 // c_rarg1 - destination byte array address 2456 // c_rarg2 - K (key) in little endian int array 2457 // c_rarg3 - r vector byte array address 2458 // c_rarg4 - input length 2459 // 2460 // Output: 2461 // rax - input length 2462 // 2463 2464 address generate_cipherBlockChaining_decryptAESCrypt_Parallel() { 2465 assert(UseAES, "need AES instructions and misaligned SSE support"); 2466 __ align(CodeEntryAlignment); 2467 StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_decryptAESCrypt"); 2468 address start = __ pc(); 2469 2470 const Register from = rsi; // source array address 2471 const Register to = rdx; // destination array address 2472 const Register key = rcx; // key array address 2473 const Register rvec = rdi; // r byte array initialized from initvector array address 2474 // and left with the results of the last encryption block 2475 const Register len_reg = rbx; // src len (must be multiple of blocksize 16) 2476 const Register pos = rax; 2477 2478 const int PARALLEL_FACTOR = 4; 2479 const int ROUNDS[3] = { 10, 12, 14 }; //aes rounds for key128, key192, key256 2480 2481 Label L_exit; 2482 Label L_singleBlock_loopTop[3]; //128, 192, 256 2483 Label L_multiBlock_loopTop[3]; //128, 192, 256 2484 2485 const XMMRegister xmm_prev_block_cipher = xmm0; // holds cipher of previous block 2486 const XMMRegister xmm_key_shuf_mask = xmm1; 2487 2488 const XMMRegister xmm_key_tmp0 = xmm2; 2489 const XMMRegister xmm_key_tmp1 = xmm3; 2490 2491 // registers holding the six results in the parallelized loop 2492 const XMMRegister xmm_result0 = xmm4; 2493 const XMMRegister xmm_result1 = xmm5; 2494 const XMMRegister xmm_result2 = xmm6; 2495 const XMMRegister xmm_result3 = xmm7; 2496 2497 __ enter(); // required for proper stackwalking of RuntimeStub frame 2498 handleSOERegisters(true /*saving*/); 2499 2500 // load registers from incoming parameters 2501 const Address from_param(rbp, 8+0); 2502 const Address to_param (rbp, 8+4); 2503 const Address key_param (rbp, 8+8); 2504 const Address rvec_param (rbp, 8+12); 2505 const Address len_param (rbp, 8+16); 2506 2507 __ movptr(from , from_param); 2508 __ movptr(to , to_param); 2509 __ movptr(key , key_param); 2510 __ movptr(rvec , rvec_param); 2511 __ movptr(len_reg , len_param); 2512 2513 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); 2514 __ movdqu(xmm_prev_block_cipher, Address(rvec, 0x00)); // initialize with initial rvec 2515 2516 __ xorptr(pos, pos); 2517 2518 // now split to different paths depending on the keylen (len in ints of AESCrypt.KLE array (52=192, or 60=256)) 2519 // rvec is reused 2520 __ movl(rvec, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); 2521 __ cmpl(rvec, 52); 2522 __ jcc(Assembler::equal, L_multiBlock_loopTop[1]); 2523 __ cmpl(rvec, 60); 2524 __ jcc(Assembler::equal, L_multiBlock_loopTop[2]); 2525 2526 #define DoFour(opc, src_reg) \ 2527 __ opc(xmm_result0, src_reg); \ 2528 __ opc(xmm_result1, src_reg); \ 2529 __ opc(xmm_result2, src_reg); \ 2530 __ opc(xmm_result3, src_reg); \ 2531 2532 for (int k = 0; k < 3; ++k) { 2533 __ align(OptoLoopAlignment); 2534 __ BIND(L_multiBlock_loopTop[k]); 2535 __ cmpptr(len_reg, PARALLEL_FACTOR * AESBlockSize); // see if at least 4 blocks left 2536 __ jcc(Assembler::less, L_singleBlock_loopTop[k]); 2537 2538 __ movdqu(xmm_result0, Address(from, pos, Address::times_1, 0 * AESBlockSize)); // get next 4 blocks into xmmresult registers 2539 __ movdqu(xmm_result1, Address(from, pos, Address::times_1, 1 * AESBlockSize)); 2540 __ movdqu(xmm_result2, Address(from, pos, Address::times_1, 2 * AESBlockSize)); 2541 __ movdqu(xmm_result3, Address(from, pos, Address::times_1, 3 * AESBlockSize)); 2542 2543 // the java expanded key ordering is rotated one position from what we want 2544 // so we start from 0x10 here and hit 0x00 last 2545 load_key(xmm_key_tmp0, key, 0x10, xmm_key_shuf_mask); 2546 DoFour(pxor, xmm_key_tmp0); //xor with first key 2547 // do the aes dec rounds 2548 for (int rnum = 1; rnum <= ROUNDS[k];) { 2549 //load two keys at a time 2550 //k1->0x20, ..., k9->0xa0, k10->0x00 2551 load_key(xmm_key_tmp1, key, (rnum + 1) * 0x10, xmm_key_shuf_mask); 2552 load_key(xmm_key_tmp0, key, ((rnum + 2) % (ROUNDS[k] + 1)) * 0x10, xmm_key_shuf_mask); // hit 0x00 last! 2553 DoFour(aesdec, xmm_key_tmp1); 2554 rnum++; 2555 if (rnum != ROUNDS[k]) { 2556 DoFour(aesdec, xmm_key_tmp0); 2557 } 2558 else { 2559 DoFour(aesdeclast, xmm_key_tmp0); 2560 } 2561 rnum++; 2562 } 2563 2564 // for each result, xor with the r vector of previous cipher block 2565 __ pxor(xmm_result0, xmm_prev_block_cipher); 2566 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 0 * AESBlockSize)); 2567 __ pxor(xmm_result1, xmm_prev_block_cipher); 2568 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 1 * AESBlockSize)); 2569 __ pxor(xmm_result2, xmm_prev_block_cipher); 2570 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 2 * AESBlockSize)); 2571 __ pxor(xmm_result3, xmm_prev_block_cipher); 2572 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 3 * AESBlockSize)); // this will carry over to next set of blocks 2573 2574 // store 4 results into the next 64 bytes of output 2575 __ movdqu(Address(to, pos, Address::times_1, 0 * AESBlockSize), xmm_result0); 2576 __ movdqu(Address(to, pos, Address::times_1, 1 * AESBlockSize), xmm_result1); 2577 __ movdqu(Address(to, pos, Address::times_1, 2 * AESBlockSize), xmm_result2); 2578 __ movdqu(Address(to, pos, Address::times_1, 3 * AESBlockSize), xmm_result3); 2579 2580 __ addptr(pos, 4 * AESBlockSize); 2581 __ subptr(len_reg, 4 * AESBlockSize); 2582 __ jmp(L_multiBlock_loopTop[k]); 2583 2584 //singleBlock starts here 2585 __ align(OptoLoopAlignment); 2586 __ BIND(L_singleBlock_loopTop[k]); 2587 __ cmpptr(len_reg, 0); // any blocks left? 2588 __ jcc(Assembler::equal, L_exit); 2589 __ movdqu(xmm_result0, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of cipher input 2590 __ movdqa(xmm_result1, xmm_result0); 2591 2592 load_key(xmm_key_tmp0, key, 0x10, xmm_key_shuf_mask); 2593 __ pxor(xmm_result0, xmm_key_tmp0); 2594 // do the aes dec rounds 2595 for (int rnum = 1; rnum < ROUNDS[k]; rnum++) { 2596 // the java expanded key ordering is rotated one position from what we want 2597 load_key(xmm_key_tmp0, key, (rnum + 1) * 0x10, xmm_key_shuf_mask); 2598 __ aesdec(xmm_result0, xmm_key_tmp0); 2599 } 2600 load_key(xmm_key_tmp0, key, 0x00, xmm_key_shuf_mask); 2601 __ aesdeclast(xmm_result0, xmm_key_tmp0); 2602 __ pxor(xmm_result0, xmm_prev_block_cipher); // xor with the current r vector 2603 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result0); // store into the next 16 bytes of output 2604 // no need to store r to memory until we exit 2605 __ movdqa(xmm_prev_block_cipher, xmm_result1); // set up next r vector with cipher input from this block 2606 2607 __ addptr(pos, AESBlockSize); 2608 __ subptr(len_reg, AESBlockSize); 2609 __ jmp(L_singleBlock_loopTop[k]); 2610 }//for 128/192/256 2611 2612 __ BIND(L_exit); 2613 __ movptr(rvec, rvec_param); // restore this since reused earlier 2614 __ movdqu(Address(rvec, 0), xmm_prev_block_cipher); // final value of r stored in rvec of CipherBlockChaining object 2615 handleSOERegisters(false /*restoring*/); 2616 __ movptr(rax, len_param); // return length 2617 __ leave(); // required for proper stackwalking of RuntimeStub frame 2618 __ ret(0); 2619 2620 return start; 2621 } 2622 2623 // CTR AES crypt. 2624 // In 32-bit stub, parallelize 4 blocks at a time 2625 // Arguments: 2626 // 2627 // Inputs: 2628 // c_rarg0 - source byte array address 2629 // c_rarg1 - destination byte array address 2630 // c_rarg2 - K (key) in little endian int array 2631 // c_rarg3 - counter vector byte array address 2632 // c_rarg4 - input length 2633 // 2634 // Output: 2635 // rax - input length 2636 // 2637 address generate_counterMode_AESCrypt_Parallel() { 2638 assert(UseAES, "need AES instructions and misaligned SSE support"); 2639 __ align(CodeEntryAlignment); 2640 StubCodeMark mark(this, "StubRoutines", "counterMode_AESCrypt"); 2641 address start = __ pc(); 2642 const Register from = rsi; // source array address 2643 const Register to = rdx; // destination array address 2644 const Register key = rcx; // key array address 2645 const Register counter = rdi; // counter byte array initialized from initvector array address 2646 // and updated with the incremented counter in the end 2647 const Register len_reg = rbx; 2648 const Register pos = rax; 2649 2650 __ enter(); // required for proper stackwalking of RuntimeStub frame 2651 handleSOERegisters(true /*saving*/); // save rbx, rsi, rdi 2652 2653 // load registers from incoming parameters 2654 const Address from_param(rbp, 8+0); 2655 const Address to_param (rbp, 8+4); 2656 const Address key_param (rbp, 8+8); 2657 const Address rvec_param (rbp, 8+12); 2658 const Address len_param (rbp, 8+16); 2659 const Address saved_counter_param(rbp, 8 + 20); 2660 const Address used_addr_param(rbp, 8 + 24); 2661 2662 __ movptr(from , from_param); 2663 __ movptr(to , to_param); 2664 __ movptr(len_reg , len_param); 2665 2666 // Use the partially used encrpyted counter from last invocation 2667 Label L_exit_preLoop, L_preLoop_start; 2668 2669 // Use the registers 'counter' and 'key' here in this preloop 2670 // to hold of last 2 params 'used' and 'saved_encCounter_start' 2671 Register used = counter; 2672 Register saved_encCounter_start = key; 2673 Register used_addr = saved_encCounter_start; 2674 2675 __ movptr(used_addr, used_addr_param); 2676 __ movptr(used, Address(used_addr, 0)); 2677 __ movptr(saved_encCounter_start, saved_counter_param); 2678 2679 __ BIND(L_preLoop_start); 2680 __ cmpptr(used, 16); 2681 __ jcc(Assembler::aboveEqual, L_exit_preLoop); 2682 __ cmpptr(len_reg, 0); 2683 __ jcc(Assembler::lessEqual, L_exit_preLoop); 2684 __ movb(rax, Address(saved_encCounter_start, used)); 2685 __ xorb(rax, Address(from, 0)); 2686 __ movb(Address(to, 0), rax); 2687 __ addptr(from, 1); 2688 __ addptr(to, 1); 2689 __ addptr(used, 1); 2690 __ subptr(len_reg, 1); 2691 2692 __ jmp(L_preLoop_start); 2693 2694 __ BIND(L_exit_preLoop); 2695 __ movptr(used_addr, used_addr_param); 2696 __ movptr(used_addr, used_addr_param); 2697 __ movl(Address(used_addr, 0), used); 2698 2699 // load the parameters 'key' and 'counter' 2700 __ movptr(key, key_param); 2701 __ movptr(counter, rvec_param); 2702 2703 // xmm register assignments for the loops below 2704 const XMMRegister xmm_curr_counter = xmm0; 2705 const XMMRegister xmm_counter_shuf_mask = xmm1; // need to be reloaded 2706 const XMMRegister xmm_key_shuf_mask = xmm2; // need to be reloaded 2707 const XMMRegister xmm_key = xmm3; 2708 const XMMRegister xmm_result0 = xmm4; 2709 const XMMRegister xmm_result1 = xmm5; 2710 const XMMRegister xmm_result2 = xmm6; 2711 const XMMRegister xmm_result3 = xmm7; 2712 const XMMRegister xmm_from0 = xmm1; //reuse XMM register 2713 const XMMRegister xmm_from1 = xmm2; 2714 const XMMRegister xmm_from2 = xmm3; 2715 const XMMRegister xmm_from3 = xmm4; 2716 2717 //for key_128, key_192, key_256 2718 const int rounds[3] = {10, 12, 14}; 2719 Label L_singleBlockLoopTop[3]; 2720 Label L_multiBlock_loopTop[3]; 2721 Label L_key192_top, L_key256_top; 2722 Label L_incCounter[3][4]; // 3: different key length, 4: 4 blocks at a time 2723 Label L_incCounter_single[3]; //for single block, key128, key192, key256 2724 Label L_processTail_insr[3], L_processTail_4_insr[3], L_processTail_2_insr[3], L_processTail_1_insr[3], L_processTail_exit_insr[3]; 2725 Label L_processTail_extr[3], L_processTail_4_extr[3], L_processTail_2_extr[3], L_processTail_1_extr[3], L_processTail_exit_extr[3]; 2726 2727 Label L_exit; 2728 const int PARALLEL_FACTOR = 4; //because of the limited register number 2729 2730 // initialize counter with initial counter 2731 __ movdqu(xmm_curr_counter, Address(counter, 0x00)); 2732 __ movdqu(xmm_counter_shuf_mask, ExternalAddress(StubRoutines::x86::counter_shuffle_mask_addr())); 2733 __ pshufb(xmm_curr_counter, xmm_counter_shuf_mask); //counter is shuffled for increase 2734 2735 // key length could be only {11, 13, 15} * 4 = {44, 52, 60} 2736 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); 2737 __ movl(rax, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); 2738 __ cmpl(rax, 52); 2739 __ jcc(Assembler::equal, L_key192_top); 2740 __ cmpl(rax, 60); 2741 __ jcc(Assembler::equal, L_key256_top); 2742 2743 //key128 begins here 2744 __ movptr(pos, 0); // init pos before L_multiBlock_loopTop 2745 2746 #define CTR_DoFour(opc, src_reg) \ 2747 __ opc(xmm_result0, src_reg); \ 2748 __ opc(xmm_result1, src_reg); \ 2749 __ opc(xmm_result2, src_reg); \ 2750 __ opc(xmm_result3, src_reg); 2751 2752 // k == 0 : generate code for key_128 2753 // k == 1 : generate code for key_192 2754 // k == 2 : generate code for key_256 2755 for (int k = 0; k < 3; ++k) { 2756 //multi blocks starts here 2757 __ align(OptoLoopAlignment); 2758 __ BIND(L_multiBlock_loopTop[k]); 2759 __ cmpptr(len_reg, PARALLEL_FACTOR * AESBlockSize); // see if at least PARALLEL_FACTOR blocks left 2760 __ jcc(Assembler::less, L_singleBlockLoopTop[k]); 2761 2762 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); 2763 __ movdqu(xmm_counter_shuf_mask, ExternalAddress(StubRoutines::x86::counter_shuffle_mask_addr())); 2764 2765 //load, then increase counters 2766 CTR_DoFour(movdqa, xmm_curr_counter); 2767 __ push(rbx); 2768 inc_counter(rbx, xmm_result1, 0x01, L_incCounter[k][0]); 2769 inc_counter(rbx, xmm_result2, 0x02, L_incCounter[k][1]); 2770 inc_counter(rbx, xmm_result3, 0x03, L_incCounter[k][2]); 2771 inc_counter(rbx, xmm_curr_counter, 0x04, L_incCounter[k][3]); 2772 __ pop (rbx); 2773 2774 load_key(xmm_key, key, 0x00, xmm_key_shuf_mask); // load Round 0 key. interleaving for better performance 2775 2776 CTR_DoFour(pshufb, xmm_counter_shuf_mask); // after increased, shuffled counters back for PXOR 2777 CTR_DoFour(pxor, xmm_key); //PXOR with Round 0 key 2778 2779 for (int i = 1; i < rounds[k]; ++i) { 2780 load_key(xmm_key, key, (0x10 * i), xmm_key_shuf_mask); 2781 CTR_DoFour(aesenc, xmm_key); 2782 } 2783 load_key(xmm_key, key, (0x10 * rounds[k]), xmm_key_shuf_mask); 2784 CTR_DoFour(aesenclast, xmm_key); 2785 2786 // get next PARALLEL_FACTOR blocks into xmm_from registers 2787 __ movdqu(xmm_from0, Address(from, pos, Address::times_1, 0 * AESBlockSize)); 2788 __ movdqu(xmm_from1, Address(from, pos, Address::times_1, 1 * AESBlockSize)); 2789 __ movdqu(xmm_from2, Address(from, pos, Address::times_1, 2 * AESBlockSize)); 2790 2791 // PXOR with input text 2792 __ pxor(xmm_result0, xmm_from0); //result0 is xmm4 2793 __ pxor(xmm_result1, xmm_from1); 2794 __ pxor(xmm_result2, xmm_from2); 2795 2796 // store PARALLEL_FACTOR results into the next 64 bytes of output 2797 __ movdqu(Address(to, pos, Address::times_1, 0 * AESBlockSize), xmm_result0); 2798 __ movdqu(Address(to, pos, Address::times_1, 1 * AESBlockSize), xmm_result1); 2799 __ movdqu(Address(to, pos, Address::times_1, 2 * AESBlockSize), xmm_result2); 2800 2801 // do it here after xmm_result0 is saved, because xmm_from3 reuse the same register of xmm_result0. 2802 __ movdqu(xmm_from3, Address(from, pos, Address::times_1, 3 * AESBlockSize)); 2803 __ pxor(xmm_result3, xmm_from3); 2804 __ movdqu(Address(to, pos, Address::times_1, 3 * AESBlockSize), xmm_result3); 2805 2806 __ addptr(pos, PARALLEL_FACTOR * AESBlockSize); // increase the length of crypt text 2807 __ subptr(len_reg, PARALLEL_FACTOR * AESBlockSize); // decrease the remaining length 2808 __ jmp(L_multiBlock_loopTop[k]); 2809 2810 // singleBlock starts here 2811 __ align(OptoLoopAlignment); 2812 __ BIND(L_singleBlockLoopTop[k]); 2813 __ cmpptr(len_reg, 0); 2814 __ jcc(Assembler::equal, L_exit); 2815 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); 2816 __ movdqu(xmm_counter_shuf_mask, ExternalAddress(StubRoutines::x86::counter_shuffle_mask_addr())); 2817 __ movdqa(xmm_result0, xmm_curr_counter); 2818 load_key(xmm_key, key, 0x00, xmm_key_shuf_mask); 2819 __ push(rbx);//rbx is used for increasing counter 2820 inc_counter(rbx, xmm_curr_counter, 0x01, L_incCounter_single[k]); 2821 __ pop (rbx); 2822 __ pshufb(xmm_result0, xmm_counter_shuf_mask); 2823 __ pxor(xmm_result0, xmm_key); 2824 for (int i = 1; i < rounds[k]; i++) { 2825 load_key(xmm_key, key, (0x10 * i), xmm_key_shuf_mask); 2826 __ aesenc(xmm_result0, xmm_key); 2827 } 2828 load_key(xmm_key, key, (0x10 * rounds[k]), xmm_key_shuf_mask); 2829 __ aesenclast(xmm_result0, xmm_key); 2830 __ cmpptr(len_reg, AESBlockSize); 2831 __ jcc(Assembler::less, L_processTail_insr[k]); 2832 __ movdqu(xmm_from0, Address(from, pos, Address::times_1, 0 * AESBlockSize)); 2833 __ pxor(xmm_result0, xmm_from0); 2834 __ movdqu(Address(to, pos, Address::times_1, 0 * AESBlockSize), xmm_result0); 2835 __ addptr(pos, AESBlockSize); 2836 __ subptr(len_reg, AESBlockSize); 2837 __ jmp(L_singleBlockLoopTop[k]); 2838 2839 __ BIND(L_processTail_insr[k]); // Process the tail part of the input array 2840 __ addptr(pos, len_reg); // 1. Insert bytes from src array into xmm_from0 register 2841 __ testptr(len_reg, 8); 2842 __ jcc(Assembler::zero, L_processTail_4_insr[k]); 2843 __ subptr(pos,8); 2844 __ pinsrd(xmm_from0, Address(from, pos), 0); 2845 __ pinsrd(xmm_from0, Address(from, pos, Address::times_1, 4), 1); 2846 __ BIND(L_processTail_4_insr[k]); 2847 __ testptr(len_reg, 4); 2848 __ jcc(Assembler::zero, L_processTail_2_insr[k]); 2849 __ subptr(pos,4); 2850 __ pslldq(xmm_from0, 4); 2851 __ pinsrd(xmm_from0, Address(from, pos), 0); 2852 __ BIND(L_processTail_2_insr[k]); 2853 __ testptr(len_reg, 2); 2854 __ jcc(Assembler::zero, L_processTail_1_insr[k]); 2855 __ subptr(pos, 2); 2856 __ pslldq(xmm_from0, 2); 2857 __ pinsrw(xmm_from0, Address(from, pos), 0); 2858 __ BIND(L_processTail_1_insr[k]); 2859 __ testptr(len_reg, 1); 2860 __ jcc(Assembler::zero, L_processTail_exit_insr[k]); 2861 __ subptr(pos, 1); 2862 __ pslldq(xmm_from0, 1); 2863 __ pinsrb(xmm_from0, Address(from, pos), 0); 2864 __ BIND(L_processTail_exit_insr[k]); 2865 2866 __ movptr(saved_encCounter_start, saved_counter_param); 2867 __ movdqu(Address(saved_encCounter_start, 0), xmm_result0); // 2. Perform pxor of the encrypted counter and plaintext Bytes. 2868 __ pxor(xmm_result0, xmm_from0); // Also the encrypted counter is saved for next invocation. 2869 2870 __ testptr(len_reg, 8); 2871 __ jcc(Assembler::zero, L_processTail_4_extr[k]); // 3. Extract bytes from xmm_result0 into the dest. array 2872 __ pextrd(Address(to, pos), xmm_result0, 0); 2873 __ pextrd(Address(to, pos, Address::times_1, 4), xmm_result0, 1); 2874 __ psrldq(xmm_result0, 8); 2875 __ addptr(pos, 8); 2876 __ BIND(L_processTail_4_extr[k]); 2877 __ testptr(len_reg, 4); 2878 __ jcc(Assembler::zero, L_processTail_2_extr[k]); 2879 __ pextrd(Address(to, pos), xmm_result0, 0); 2880 __ psrldq(xmm_result0, 4); 2881 __ addptr(pos, 4); 2882 __ BIND(L_processTail_2_extr[k]); 2883 __ testptr(len_reg, 2); 2884 __ jcc(Assembler::zero, L_processTail_1_extr[k]); 2885 __ pextrb(Address(to, pos), xmm_result0, 0); 2886 __ pextrb(Address(to, pos, Address::times_1, 1), xmm_result0, 1); 2887 __ psrldq(xmm_result0, 2); 2888 __ addptr(pos, 2); 2889 __ BIND(L_processTail_1_extr[k]); 2890 __ testptr(len_reg, 1); 2891 __ jcc(Assembler::zero, L_processTail_exit_extr[k]); 2892 __ pextrb(Address(to, pos), xmm_result0, 0); 2893 2894 __ BIND(L_processTail_exit_extr[k]); 2895 __ movptr(used_addr, used_addr_param); 2896 __ movl(Address(used_addr, 0), len_reg); 2897 __ jmp(L_exit); 2898 } 2899 2900 __ BIND(L_exit); 2901 __ movdqu(xmm_counter_shuf_mask, ExternalAddress(StubRoutines::x86::counter_shuffle_mask_addr())); 2902 __ pshufb(xmm_curr_counter, xmm_counter_shuf_mask); //counter is shuffled back. 2903 __ movdqu(Address(counter, 0), xmm_curr_counter); //save counter back 2904 handleSOERegisters(false /*restoring*/); 2905 __ movptr(rax, len_param); // return length 2906 __ leave(); // required for proper stackwalking of RuntimeStub frame 2907 __ ret(0); 2908 2909 __ BIND (L_key192_top); 2910 __ movptr(pos, 0); // init pos before L_multiBlock_loopTop 2911 __ jmp(L_multiBlock_loopTop[1]); //key192 2912 2913 __ BIND (L_key256_top); 2914 __ movptr(pos, 0); // init pos before L_multiBlock_loopTop 2915 __ jmp(L_multiBlock_loopTop[2]); //key192 2916 2917 return start; 2918 } 2919 2920 address generate_upper_word_mask() { 2921 __ align(64); 2922 StubCodeMark mark(this, "StubRoutines", "upper_word_mask"); 2923 address start = __ pc(); 2924 __ emit_data(0x00000000, relocInfo::none, 0); 2925 __ emit_data(0x00000000, relocInfo::none, 0); 2926 __ emit_data(0x00000000, relocInfo::none, 0); 2927 __ emit_data(0xFFFFFFFF, relocInfo::none, 0); 2928 return start; 2929 } 2930 2931 address generate_shuffle_byte_flip_mask() { 2932 __ align(64); 2933 StubCodeMark mark(this, "StubRoutines", "shuffle_byte_flip_mask"); 2934 address start = __ pc(); 2935 __ emit_data(0x0c0d0e0f, relocInfo::none, 0); 2936 __ emit_data(0x08090a0b, relocInfo::none, 0); 2937 __ emit_data(0x04050607, relocInfo::none, 0); 2938 __ emit_data(0x00010203, relocInfo::none, 0); 2939 return start; 2940 } 2941 2942 // ofs and limit are use for multi-block byte array. 2943 // int com.sun.security.provider.DigestBase.implCompressMultiBlock(byte[] b, int ofs, int limit) 2944 address generate_sha1_implCompress(bool multi_block, const char *name) { 2945 __ align(CodeEntryAlignment); 2946 StubCodeMark mark(this, "StubRoutines", name); 2947 address start = __ pc(); 2948 2949 Register buf = rax; 2950 Register state = rdx; 2951 Register ofs = rcx; 2952 Register limit = rdi; 2953 2954 const Address buf_param(rbp, 8 + 0); 2955 const Address state_param(rbp, 8 + 4); 2956 const Address ofs_param(rbp, 8 + 8); 2957 const Address limit_param(rbp, 8 + 12); 2958 2959 const XMMRegister abcd = xmm0; 2960 const XMMRegister e0 = xmm1; 2961 const XMMRegister e1 = xmm2; 2962 const XMMRegister msg0 = xmm3; 2963 2964 const XMMRegister msg1 = xmm4; 2965 const XMMRegister msg2 = xmm5; 2966 const XMMRegister msg3 = xmm6; 2967 const XMMRegister shuf_mask = xmm7; 2968 2969 __ enter(); 2970 __ subptr(rsp, 8 * wordSize); 2971 handleSOERegisters(true /*saving*/); 2972 2973 __ movptr(buf, buf_param); 2974 __ movptr(state, state_param); 2975 if (multi_block) { 2976 __ movptr(ofs, ofs_param); 2977 __ movptr(limit, limit_param); 2978 } 2979 2980 __ fast_sha1(abcd, e0, e1, msg0, msg1, msg2, msg3, shuf_mask, 2981 buf, state, ofs, limit, rsp, multi_block); 2982 2983 handleSOERegisters(false /*restoring*/); 2984 __ addptr(rsp, 8 * wordSize); 2985 __ leave(); 2986 __ ret(0); 2987 return start; 2988 } 2989 2990 address generate_pshuffle_byte_flip_mask() { 2991 __ align(64); 2992 StubCodeMark mark(this, "StubRoutines", "pshuffle_byte_flip_mask"); 2993 address start = __ pc(); 2994 __ emit_data(0x00010203, relocInfo::none, 0); 2995 __ emit_data(0x04050607, relocInfo::none, 0); 2996 __ emit_data(0x08090a0b, relocInfo::none, 0); 2997 __ emit_data(0x0c0d0e0f, relocInfo::none, 0); 2998 return start; 2999 } 3000 3001 // ofs and limit are use for multi-block byte array. 3002 // int com.sun.security.provider.DigestBase.implCompressMultiBlock(byte[] b, int ofs, int limit) 3003 address generate_sha256_implCompress(bool multi_block, const char *name) { 3004 __ align(CodeEntryAlignment); 3005 StubCodeMark mark(this, "StubRoutines", name); 3006 address start = __ pc(); 3007 3008 Register buf = rbx; 3009 Register state = rsi; 3010 Register ofs = rdx; 3011 Register limit = rcx; 3012 3013 const Address buf_param(rbp, 8 + 0); 3014 const Address state_param(rbp, 8 + 4); 3015 const Address ofs_param(rbp, 8 + 8); 3016 const Address limit_param(rbp, 8 + 12); 3017 3018 const XMMRegister msg = xmm0; 3019 const XMMRegister state0 = xmm1; 3020 const XMMRegister state1 = xmm2; 3021 const XMMRegister msgtmp0 = xmm3; 3022 3023 const XMMRegister msgtmp1 = xmm4; 3024 const XMMRegister msgtmp2 = xmm5; 3025 const XMMRegister msgtmp3 = xmm6; 3026 const XMMRegister msgtmp4 = xmm7; 3027 3028 __ enter(); 3029 __ subptr(rsp, 8 * wordSize); 3030 handleSOERegisters(true /*saving*/); 3031 __ movptr(buf, buf_param); 3032 __ movptr(state, state_param); 3033 if (multi_block) { 3034 __ movptr(ofs, ofs_param); 3035 __ movptr(limit, limit_param); 3036 } 3037 3038 __ fast_sha256(msg, state0, state1, msgtmp0, msgtmp1, msgtmp2, msgtmp3, msgtmp4, 3039 buf, state, ofs, limit, rsp, multi_block); 3040 3041 handleSOERegisters(false); 3042 __ addptr(rsp, 8 * wordSize); 3043 __ leave(); 3044 __ ret(0); 3045 return start; 3046 } 3047 3048 // byte swap x86 long 3049 address generate_ghash_long_swap_mask() { 3050 __ align(CodeEntryAlignment); 3051 StubCodeMark mark(this, "StubRoutines", "ghash_long_swap_mask"); 3052 address start = __ pc(); 3053 __ emit_data(0x0b0a0908, relocInfo::none, 0); 3054 __ emit_data(0x0f0e0d0c, relocInfo::none, 0); 3055 __ emit_data(0x03020100, relocInfo::none, 0); 3056 __ emit_data(0x07060504, relocInfo::none, 0); 3057 3058 return start; 3059 } 3060 3061 // byte swap x86 byte array 3062 address generate_ghash_byte_swap_mask() { 3063 __ align(CodeEntryAlignment); 3064 StubCodeMark mark(this, "StubRoutines", "ghash_byte_swap_mask"); 3065 address start = __ pc(); 3066 __ emit_data(0x0c0d0e0f, relocInfo::none, 0); 3067 __ emit_data(0x08090a0b, relocInfo::none, 0); 3068 __ emit_data(0x04050607, relocInfo::none, 0); 3069 __ emit_data(0x00010203, relocInfo::none, 0); 3070 return start; 3071 } 3072 3073 /* Single and multi-block ghash operations */ 3074 address generate_ghash_processBlocks() { 3075 assert(UseGHASHIntrinsics, "need GHASH intrinsics and CLMUL support"); 3076 __ align(CodeEntryAlignment); 3077 Label L_ghash_loop, L_exit; 3078 StubCodeMark mark(this, "StubRoutines", "ghash_processBlocks"); 3079 address start = __ pc(); 3080 3081 const Register state = rdi; 3082 const Register subkeyH = rsi; 3083 const Register data = rdx; 3084 const Register blocks = rcx; 3085 3086 const Address state_param(rbp, 8+0); 3087 const Address subkeyH_param(rbp, 8+4); 3088 const Address data_param(rbp, 8+8); 3089 const Address blocks_param(rbp, 8+12); 3090 3091 const XMMRegister xmm_temp0 = xmm0; 3092 const XMMRegister xmm_temp1 = xmm1; 3093 const XMMRegister xmm_temp2 = xmm2; 3094 const XMMRegister xmm_temp3 = xmm3; 3095 const XMMRegister xmm_temp4 = xmm4; 3096 const XMMRegister xmm_temp5 = xmm5; 3097 const XMMRegister xmm_temp6 = xmm6; 3098 const XMMRegister xmm_temp7 = xmm7; 3099 3100 __ enter(); 3101 handleSOERegisters(true); // Save registers 3102 3103 __ movptr(state, state_param); 3104 __ movptr(subkeyH, subkeyH_param); 3105 __ movptr(data, data_param); 3106 __ movptr(blocks, blocks_param); 3107 3108 __ movdqu(xmm_temp0, Address(state, 0)); 3109 __ pshufb(xmm_temp0, ExternalAddress(StubRoutines::x86::ghash_long_swap_mask_addr())); 3110 3111 __ movdqu(xmm_temp1, Address(subkeyH, 0)); 3112 __ pshufb(xmm_temp1, ExternalAddress(StubRoutines::x86::ghash_long_swap_mask_addr())); 3113 3114 __ BIND(L_ghash_loop); 3115 __ movdqu(xmm_temp2, Address(data, 0)); 3116 __ pshufb(xmm_temp2, ExternalAddress(StubRoutines::x86::ghash_byte_swap_mask_addr())); 3117 3118 __ pxor(xmm_temp0, xmm_temp2); 3119 3120 // 3121 // Multiply with the hash key 3122 // 3123 __ movdqu(xmm_temp3, xmm_temp0); 3124 __ pclmulqdq(xmm_temp3, xmm_temp1, 0); // xmm3 holds a0*b0 3125 __ movdqu(xmm_temp4, xmm_temp0); 3126 __ pclmulqdq(xmm_temp4, xmm_temp1, 16); // xmm4 holds a0*b1 3127 3128 __ movdqu(xmm_temp5, xmm_temp0); 3129 __ pclmulqdq(xmm_temp5, xmm_temp1, 1); // xmm5 holds a1*b0 3130 __ movdqu(xmm_temp6, xmm_temp0); 3131 __ pclmulqdq(xmm_temp6, xmm_temp1, 17); // xmm6 holds a1*b1 3132 3133 __ pxor(xmm_temp4, xmm_temp5); // xmm4 holds a0*b1 + a1*b0 3134 3135 __ movdqu(xmm_temp5, xmm_temp4); // move the contents of xmm4 to xmm5 3136 __ psrldq(xmm_temp4, 8); // shift by xmm4 64 bits to the right 3137 __ pslldq(xmm_temp5, 8); // shift by xmm5 64 bits to the left 3138 __ pxor(xmm_temp3, xmm_temp5); 3139 __ pxor(xmm_temp6, xmm_temp4); // Register pair <xmm6:xmm3> holds the result 3140 // of the carry-less multiplication of 3141 // xmm0 by xmm1. 3142 3143 // We shift the result of the multiplication by one bit position 3144 // to the left to cope for the fact that the bits are reversed. 3145 __ movdqu(xmm_temp7, xmm_temp3); 3146 __ movdqu(xmm_temp4, xmm_temp6); 3147 __ pslld (xmm_temp3, 1); 3148 __ pslld(xmm_temp6, 1); 3149 __ psrld(xmm_temp7, 31); 3150 __ psrld(xmm_temp4, 31); 3151 __ movdqu(xmm_temp5, xmm_temp7); 3152 __ pslldq(xmm_temp4, 4); 3153 __ pslldq(xmm_temp7, 4); 3154 __ psrldq(xmm_temp5, 12); 3155 __ por(xmm_temp3, xmm_temp7); 3156 __ por(xmm_temp6, xmm_temp4); 3157 __ por(xmm_temp6, xmm_temp5); 3158 3159 // 3160 // First phase of the reduction 3161 // 3162 // Move xmm3 into xmm4, xmm5, xmm7 in order to perform the shifts 3163 // independently. 3164 __ movdqu(xmm_temp7, xmm_temp3); 3165 __ movdqu(xmm_temp4, xmm_temp3); 3166 __ movdqu(xmm_temp5, xmm_temp3); 3167 __ pslld(xmm_temp7, 31); // packed right shift shifting << 31 3168 __ pslld(xmm_temp4, 30); // packed right shift shifting << 30 3169 __ pslld(xmm_temp5, 25); // packed right shift shifting << 25 3170 __ pxor(xmm_temp7, xmm_temp4); // xor the shifted versions 3171 __ pxor(xmm_temp7, xmm_temp5); 3172 __ movdqu(xmm_temp4, xmm_temp7); 3173 __ pslldq(xmm_temp7, 12); 3174 __ psrldq(xmm_temp4, 4); 3175 __ pxor(xmm_temp3, xmm_temp7); // first phase of the reduction complete 3176 3177 // 3178 // Second phase of the reduction 3179 // 3180 // Make 3 copies of xmm3 in xmm2, xmm5, xmm7 for doing these 3181 // shift operations. 3182 __ movdqu(xmm_temp2, xmm_temp3); 3183 __ movdqu(xmm_temp7, xmm_temp3); 3184 __ movdqu(xmm_temp5, xmm_temp3); 3185 __ psrld(xmm_temp2, 1); // packed left shifting >> 1 3186 __ psrld(xmm_temp7, 2); // packed left shifting >> 2 3187 __ psrld(xmm_temp5, 7); // packed left shifting >> 7 3188 __ pxor(xmm_temp2, xmm_temp7); // xor the shifted versions 3189 __ pxor(xmm_temp2, xmm_temp5); 3190 __ pxor(xmm_temp2, xmm_temp4); 3191 __ pxor(xmm_temp3, xmm_temp2); 3192 __ pxor(xmm_temp6, xmm_temp3); // the result is in xmm6 3193 3194 __ decrement(blocks); 3195 __ jcc(Assembler::zero, L_exit); 3196 __ movdqu(xmm_temp0, xmm_temp6); 3197 __ addptr(data, 16); 3198 __ jmp(L_ghash_loop); 3199 3200 __ BIND(L_exit); 3201 // Byte swap 16-byte result 3202 __ pshufb(xmm_temp6, ExternalAddress(StubRoutines::x86::ghash_long_swap_mask_addr())); 3203 __ movdqu(Address(state, 0), xmm_temp6); // store the result 3204 3205 handleSOERegisters(false); // restore registers 3206 __ leave(); 3207 __ ret(0); 3208 return start; 3209 } 3210 3211 /** 3212 * Arguments: 3213 * 3214 * Inputs: 3215 * rsp(4) - int crc 3216 * rsp(8) - byte* buf 3217 * rsp(12) - int length 3218 * 3219 * Ouput: 3220 * rax - int crc result 3221 */ 3222 address generate_updateBytesCRC32() { 3223 assert(UseCRC32Intrinsics, "need AVX and CLMUL instructions"); 3224 3225 __ align(CodeEntryAlignment); 3226 StubCodeMark mark(this, "StubRoutines", "updateBytesCRC32"); 3227 3228 address start = __ pc(); 3229 3230 const Register crc = rdx; // crc 3231 const Register buf = rsi; // source java byte array address 3232 const Register len = rcx; // length 3233 const Register table = rdi; // crc_table address (reuse register) 3234 const Register tmp = rbx; 3235 assert_different_registers(crc, buf, len, table, tmp, rax); 3236 3237 BLOCK_COMMENT("Entry:"); 3238 __ enter(); // required for proper stackwalking of RuntimeStub frame 3239 __ push(rsi); 3240 __ push(rdi); 3241 __ push(rbx); 3242 3243 Address crc_arg(rbp, 8 + 0); 3244 Address buf_arg(rbp, 8 + 4); 3245 Address len_arg(rbp, 8 + 8); 3246 3247 // Load up: 3248 __ movl(crc, crc_arg); 3249 __ movptr(buf, buf_arg); 3250 __ movl(len, len_arg); 3251 3252 __ kernel_crc32(crc, buf, len, table, tmp); 3253 3254 __ movl(rax, crc); 3255 __ pop(rbx); 3256 __ pop(rdi); 3257 __ pop(rsi); 3258 __ vzeroupper(); 3259 __ leave(); // required for proper stackwalking of RuntimeStub frame 3260 __ ret(0); 3261 3262 return start; 3263 } 3264 3265 /** 3266 * Arguments: 3267 * 3268 * Inputs: 3269 * rsp(4) - int crc 3270 * rsp(8) - byte* buf 3271 * rsp(12) - int length 3272 * rsp(16) - table_start - optional (present only when doing a library_calll, 3273 * not used by x86 algorithm) 3274 * 3275 * Ouput: 3276 * rax - int crc result 3277 */ 3278 address generate_updateBytesCRC32C(bool is_pclmulqdq_supported) { 3279 assert(UseCRC32CIntrinsics, "need SSE4_2"); 3280 __ align(CodeEntryAlignment); 3281 StubCodeMark mark(this, "StubRoutines", "updateBytesCRC32C"); 3282 address start = __ pc(); 3283 const Register crc = rax; // crc 3284 const Register buf = rcx; // source java byte array address 3285 const Register len = rdx; // length 3286 const Register d = rbx; 3287 const Register g = rsi; 3288 const Register h = rdi; 3289 const Register empty = 0; // will never be used, in order not 3290 // to change a signature for crc32c_IPL_Alg2_Alt2 3291 // between 64/32 I'm just keeping it here 3292 assert_different_registers(crc, buf, len, d, g, h); 3293 3294 BLOCK_COMMENT("Entry:"); 3295 __ enter(); // required for proper stackwalking of RuntimeStub frame 3296 Address crc_arg(rsp, 4 + 4 + 0); // ESP+4 + 3297 // we need to add additional 4 because __ enter 3298 // have just pushed ebp on a stack 3299 Address buf_arg(rsp, 4 + 4 + 4); 3300 Address len_arg(rsp, 4 + 4 + 8); 3301 // Load up: 3302 __ movl(crc, crc_arg); 3303 __ movl(buf, buf_arg); 3304 __ movl(len, len_arg); 3305 __ push(d); 3306 __ push(g); 3307 __ push(h); 3308 __ crc32c_ipl_alg2_alt2(crc, buf, len, 3309 d, g, h, 3310 empty, empty, empty, 3311 xmm0, xmm1, xmm2, 3312 is_pclmulqdq_supported); 3313 __ pop(h); 3314 __ pop(g); 3315 __ pop(d); 3316 __ vzeroupper(); 3317 __ leave(); // required for proper stackwalking of RuntimeStub frame 3318 __ ret(0); 3319 3320 return start; 3321 } 3322 3323 address generate_libmExp() { 3324 StubCodeMark mark(this, "StubRoutines", "libmExp"); 3325 3326 address start = __ pc(); 3327 3328 const XMMRegister x0 = xmm0; 3329 const XMMRegister x1 = xmm1; 3330 const XMMRegister x2 = xmm2; 3331 const XMMRegister x3 = xmm3; 3332 3333 const XMMRegister x4 = xmm4; 3334 const XMMRegister x5 = xmm5; 3335 const XMMRegister x6 = xmm6; 3336 const XMMRegister x7 = xmm7; 3337 3338 const Register tmp = rbx; 3339 3340 BLOCK_COMMENT("Entry:"); 3341 __ enter(); // required for proper stackwalking of RuntimeStub frame 3342 __ fast_exp(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp); 3343 __ leave(); // required for proper stackwalking of RuntimeStub frame 3344 __ ret(0); 3345 3346 return start; 3347 3348 } 3349 3350 address generate_libmLog() { 3351 StubCodeMark mark(this, "StubRoutines", "libmLog"); 3352 3353 address start = __ pc(); 3354 3355 const XMMRegister x0 = xmm0; 3356 const XMMRegister x1 = xmm1; 3357 const XMMRegister x2 = xmm2; 3358 const XMMRegister x3 = xmm3; 3359 3360 const XMMRegister x4 = xmm4; 3361 const XMMRegister x5 = xmm5; 3362 const XMMRegister x6 = xmm6; 3363 const XMMRegister x7 = xmm7; 3364 3365 const Register tmp = rbx; 3366 3367 BLOCK_COMMENT("Entry:"); 3368 __ enter(); // required for proper stackwalking of RuntimeStub frame 3369 __ fast_log(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp); 3370 __ leave(); // required for proper stackwalking of RuntimeStub frame 3371 __ ret(0); 3372 3373 return start; 3374 3375 } 3376 3377 address generate_libmLog10() { 3378 StubCodeMark mark(this, "StubRoutines", "libmLog10"); 3379 3380 address start = __ pc(); 3381 3382 const XMMRegister x0 = xmm0; 3383 const XMMRegister x1 = xmm1; 3384 const XMMRegister x2 = xmm2; 3385 const XMMRegister x3 = xmm3; 3386 3387 const XMMRegister x4 = xmm4; 3388 const XMMRegister x5 = xmm5; 3389 const XMMRegister x6 = xmm6; 3390 const XMMRegister x7 = xmm7; 3391 3392 const Register tmp = rbx; 3393 3394 BLOCK_COMMENT("Entry:"); 3395 __ enter(); // required for proper stackwalking of RuntimeStub frame 3396 __ fast_log10(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp); 3397 __ leave(); // required for proper stackwalking of RuntimeStub frame 3398 __ ret(0); 3399 3400 return start; 3401 3402 } 3403 3404 address generate_libmPow() { 3405 StubCodeMark mark(this, "StubRoutines", "libmPow"); 3406 3407 address start = __ pc(); 3408 3409 const XMMRegister x0 = xmm0; 3410 const XMMRegister x1 = xmm1; 3411 const XMMRegister x2 = xmm2; 3412 const XMMRegister x3 = xmm3; 3413 3414 const XMMRegister x4 = xmm4; 3415 const XMMRegister x5 = xmm5; 3416 const XMMRegister x6 = xmm6; 3417 const XMMRegister x7 = xmm7; 3418 3419 const Register tmp = rbx; 3420 3421 BLOCK_COMMENT("Entry:"); 3422 __ enter(); // required for proper stackwalking of RuntimeStub frame 3423 __ fast_pow(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp); 3424 __ leave(); // required for proper stackwalking of RuntimeStub frame 3425 __ ret(0); 3426 3427 return start; 3428 3429 } 3430 3431 address generate_libm_reduce_pi04l() { 3432 StubCodeMark mark(this, "StubRoutines", "libm_reduce_pi04l"); 3433 3434 address start = __ pc(); 3435 3436 BLOCK_COMMENT("Entry:"); 3437 __ libm_reduce_pi04l(rax, rcx, rdx, rbx, rsi, rdi, rbp, rsp); 3438 3439 return start; 3440 3441 } 3442 3443 address generate_libm_sin_cos_huge() { 3444 StubCodeMark mark(this, "StubRoutines", "libm_sin_cos_huge"); 3445 3446 address start = __ pc(); 3447 3448 const XMMRegister x0 = xmm0; 3449 const XMMRegister x1 = xmm1; 3450 3451 BLOCK_COMMENT("Entry:"); 3452 __ libm_sincos_huge(x0, x1, rax, rcx, rdx, rbx, rsi, rdi, rbp, rsp); 3453 3454 return start; 3455 3456 } 3457 3458 address generate_libmSin() { 3459 StubCodeMark mark(this, "StubRoutines", "libmSin"); 3460 3461 address start = __ pc(); 3462 3463 const XMMRegister x0 = xmm0; 3464 const XMMRegister x1 = xmm1; 3465 const XMMRegister x2 = xmm2; 3466 const XMMRegister x3 = xmm3; 3467 3468 const XMMRegister x4 = xmm4; 3469 const XMMRegister x5 = xmm5; 3470 const XMMRegister x6 = xmm6; 3471 const XMMRegister x7 = xmm7; 3472 3473 BLOCK_COMMENT("Entry:"); 3474 __ enter(); // required for proper stackwalking of RuntimeStub frame 3475 __ fast_sin(x0, x1, x2, x3, x4, x5, x6, x7, rax, rbx, rdx); 3476 __ leave(); // required for proper stackwalking of RuntimeStub frame 3477 __ ret(0); 3478 3479 return start; 3480 3481 } 3482 3483 address generate_libmCos() { 3484 StubCodeMark mark(this, "StubRoutines", "libmCos"); 3485 3486 address start = __ pc(); 3487 3488 const XMMRegister x0 = xmm0; 3489 const XMMRegister x1 = xmm1; 3490 const XMMRegister x2 = xmm2; 3491 const XMMRegister x3 = xmm3; 3492 3493 const XMMRegister x4 = xmm4; 3494 const XMMRegister x5 = xmm5; 3495 const XMMRegister x6 = xmm6; 3496 const XMMRegister x7 = xmm7; 3497 3498 const Register tmp = rbx; 3499 3500 BLOCK_COMMENT("Entry:"); 3501 __ enter(); // required for proper stackwalking of RuntimeStub frame 3502 __ fast_cos(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp); 3503 __ leave(); // required for proper stackwalking of RuntimeStub frame 3504 __ ret(0); 3505 3506 return start; 3507 3508 } 3509 3510 address generate_libm_tan_cot_huge() { 3511 StubCodeMark mark(this, "StubRoutines", "libm_tan_cot_huge"); 3512 3513 address start = __ pc(); 3514 3515 const XMMRegister x0 = xmm0; 3516 const XMMRegister x1 = xmm1; 3517 3518 BLOCK_COMMENT("Entry:"); 3519 __ libm_tancot_huge(x0, x1, rax, rcx, rdx, rbx, rsi, rdi, rbp, rsp); 3520 3521 return start; 3522 3523 } 3524 3525 address generate_libmTan() { 3526 StubCodeMark mark(this, "StubRoutines", "libmTan"); 3527 3528 address start = __ pc(); 3529 3530 const XMMRegister x0 = xmm0; 3531 const XMMRegister x1 = xmm1; 3532 const XMMRegister x2 = xmm2; 3533 const XMMRegister x3 = xmm3; 3534 3535 const XMMRegister x4 = xmm4; 3536 const XMMRegister x5 = xmm5; 3537 const XMMRegister x6 = xmm6; 3538 const XMMRegister x7 = xmm7; 3539 3540 const Register tmp = rbx; 3541 3542 BLOCK_COMMENT("Entry:"); 3543 __ enter(); // required for proper stackwalking of RuntimeStub frame 3544 __ fast_tan(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp); 3545 __ leave(); // required for proper stackwalking of RuntimeStub frame 3546 __ ret(0); 3547 3548 return start; 3549 3550 } 3551 3552 // Safefetch stubs. 3553 void generate_safefetch(const char* name, int size, address* entry, 3554 address* fault_pc, address* continuation_pc) { 3555 // safefetch signatures: 3556 // int SafeFetch32(int* adr, int errValue); 3557 // intptr_t SafeFetchN (intptr_t* adr, intptr_t errValue); 3558 3559 StubCodeMark mark(this, "StubRoutines", name); 3560 3561 // Entry point, pc or function descriptor. 3562 *entry = __ pc(); 3563 3564 __ movl(rax, Address(rsp, 0x8)); 3565 __ movl(rcx, Address(rsp, 0x4)); 3566 // Load *adr into eax, may fault. 3567 *fault_pc = __ pc(); 3568 switch (size) { 3569 case 4: 3570 // int32_t 3571 __ movl(rax, Address(rcx, 0)); 3572 break; 3573 case 8: 3574 // int64_t 3575 Unimplemented(); 3576 break; 3577 default: 3578 ShouldNotReachHere(); 3579 } 3580 3581 // Return errValue or *adr. 3582 *continuation_pc = __ pc(); 3583 __ ret(0); 3584 } 3585 3586 public: 3587 // Information about frame layout at time of blocking runtime call. 3588 // Note that we only have to preserve callee-saved registers since 3589 // the compilers are responsible for supplying a continuation point 3590 // if they expect all registers to be preserved. 3591 enum layout { 3592 thread_off, // last_java_sp 3593 arg1_off, 3594 arg2_off, 3595 rbp_off, // callee saved register 3596 ret_pc, 3597 framesize 3598 }; 3599 3600 private: 3601 3602 #undef __ 3603 #define __ masm-> 3604 3605 //------------------------------------------------------------------------------------------------------------------------ 3606 // Continuation point for throwing of implicit exceptions that are not handled in 3607 // the current activation. Fabricates an exception oop and initiates normal 3608 // exception dispatching in this frame. 3609 // 3610 // Previously the compiler (c2) allowed for callee save registers on Java calls. 3611 // This is no longer true after adapter frames were removed but could possibly 3612 // be brought back in the future if the interpreter code was reworked and it 3613 // was deemed worthwhile. The comment below was left to describe what must 3614 // happen here if callee saves were resurrected. As it stands now this stub 3615 // could actually be a vanilla BufferBlob and have now oopMap at all. 3616 // Since it doesn't make much difference we've chosen to leave it the 3617 // way it was in the callee save days and keep the comment. 3618 3619 // If we need to preserve callee-saved values we need a callee-saved oop map and 3620 // therefore have to make these stubs into RuntimeStubs rather than BufferBlobs. 3621 // If the compiler needs all registers to be preserved between the fault 3622 // point and the exception handler then it must assume responsibility for that in 3623 // AbstractCompiler::continuation_for_implicit_null_exception or 3624 // continuation_for_implicit_division_by_zero_exception. All other implicit 3625 // exceptions (e.g., NullPointerException or AbstractMethodError on entry) are 3626 // either at call sites or otherwise assume that stack unwinding will be initiated, 3627 // so caller saved registers were assumed volatile in the compiler. 3628 address generate_throw_exception(const char* name, address runtime_entry, 3629 Register arg1 = noreg, Register arg2 = noreg) { 3630 3631 int insts_size = 256; 3632 int locs_size = 32; 3633 3634 CodeBuffer code(name, insts_size, locs_size); 3635 OopMapSet* oop_maps = new OopMapSet(); 3636 MacroAssembler* masm = new MacroAssembler(&code); 3637 3638 address start = __ pc(); 3639 3640 // This is an inlined and slightly modified version of call_VM 3641 // which has the ability to fetch the return PC out of 3642 // thread-local storage and also sets up last_Java_sp slightly 3643 // differently than the real call_VM 3644 Register java_thread = rbx; 3645 __ get_thread(java_thread); 3646 3647 __ enter(); // required for proper stackwalking of RuntimeStub frame 3648 3649 // pc and rbp, already pushed 3650 __ subptr(rsp, (framesize-2) * wordSize); // prolog 3651 3652 // Frame is now completed as far as size and linkage. 3653 3654 int frame_complete = __ pc() - start; 3655 3656 // push java thread (becomes first argument of C function) 3657 __ movptr(Address(rsp, thread_off * wordSize), java_thread); 3658 if (arg1 != noreg) { 3659 __ movptr(Address(rsp, arg1_off * wordSize), arg1); 3660 } 3661 if (arg2 != noreg) { 3662 assert(arg1 != noreg, "missing reg arg"); 3663 __ movptr(Address(rsp, arg2_off * wordSize), arg2); 3664 } 3665 3666 // Set up last_Java_sp and last_Java_fp 3667 __ set_last_Java_frame(java_thread, rsp, rbp, NULL); 3668 3669 // Call runtime 3670 BLOCK_COMMENT("call runtime_entry"); 3671 __ call(RuntimeAddress(runtime_entry)); 3672 // Generate oop map 3673 OopMap* map = new OopMap(framesize, 0); 3674 oop_maps->add_gc_map(__ pc() - start, map); 3675 3676 // restore the thread (cannot use the pushed argument since arguments 3677 // may be overwritten by C code generated by an optimizing compiler); 3678 // however can use the register value directly if it is callee saved. 3679 __ get_thread(java_thread); 3680 3681 __ reset_last_Java_frame(java_thread, true); 3682 3683 __ leave(); // required for proper stackwalking of RuntimeStub frame 3684 3685 // check for pending exceptions 3686 #ifdef ASSERT 3687 Label L; 3688 __ cmpptr(Address(java_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); 3689 __ jcc(Assembler::notEqual, L); 3690 __ should_not_reach_here(); 3691 __ bind(L); 3692 #endif /* ASSERT */ 3693 __ jump(RuntimeAddress(StubRoutines::forward_exception_entry())); 3694 3695 3696 RuntimeStub* stub = RuntimeStub::new_runtime_stub(name, &code, frame_complete, framesize, oop_maps, false); 3697 return stub->entry_point(); 3698 } 3699 3700 3701 void create_control_words() { 3702 // Round to nearest, 53-bit mode, exceptions masked 3703 StubRoutines::_fpu_cntrl_wrd_std = 0x027F; 3704 // Round to zero, 53-bit mode, exception mased 3705 StubRoutines::_fpu_cntrl_wrd_trunc = 0x0D7F; 3706 // Round to nearest, 24-bit mode, exceptions masked 3707 StubRoutines::_fpu_cntrl_wrd_24 = 0x007F; 3708 // Round to nearest, 64-bit mode, exceptions masked 3709 StubRoutines::_mxcsr_std = 0x1F80; 3710 // Note: the following two constants are 80-bit values 3711 // layout is critical for correct loading by FPU. 3712 // Bias for strict fp multiply/divide 3713 StubRoutines::_fpu_subnormal_bias1[0]= 0x00000000; // 2^(-15360) == 0x03ff 8000 0000 0000 0000 3714 StubRoutines::_fpu_subnormal_bias1[1]= 0x80000000; 3715 StubRoutines::_fpu_subnormal_bias1[2]= 0x03ff; 3716 // Un-Bias for strict fp multiply/divide 3717 StubRoutines::_fpu_subnormal_bias2[0]= 0x00000000; // 2^(+15360) == 0x7bff 8000 0000 0000 0000 3718 StubRoutines::_fpu_subnormal_bias2[1]= 0x80000000; 3719 StubRoutines::_fpu_subnormal_bias2[2]= 0x7bff; 3720 } 3721 3722 //--------------------------------------------------------------------------- 3723 // Initialization 3724 3725 void generate_initial() { 3726 // Generates all stubs and initializes the entry points 3727 3728 //------------------------------------------------------------------------------------------------------------------------ 3729 // entry points that exist in all platforms 3730 // Note: This is code that could be shared among different platforms - however the benefit seems to be smaller than 3731 // the disadvantage of having a much more complicated generator structure. See also comment in stubRoutines.hpp. 3732 StubRoutines::_forward_exception_entry = generate_forward_exception(); 3733 3734 StubRoutines::_call_stub_entry = 3735 generate_call_stub(StubRoutines::_call_stub_return_address); 3736 // is referenced by megamorphic call 3737 StubRoutines::_catch_exception_entry = generate_catch_exception(); 3738 3739 // These are currently used by Solaris/Intel 3740 StubRoutines::_atomic_xchg_entry = generate_atomic_xchg(); 3741 3742 // platform dependent 3743 create_control_words(); 3744 3745 StubRoutines::x86::_verify_mxcsr_entry = generate_verify_mxcsr(); 3746 StubRoutines::x86::_verify_fpu_cntrl_wrd_entry = generate_verify_fpu_cntrl_wrd(); 3747 StubRoutines::_d2i_wrapper = generate_d2i_wrapper(T_INT, 3748 CAST_FROM_FN_PTR(address, SharedRuntime::d2i)); 3749 StubRoutines::_d2l_wrapper = generate_d2i_wrapper(T_LONG, 3750 CAST_FROM_FN_PTR(address, SharedRuntime::d2l)); 3751 3752 // Build this early so it's available for the interpreter 3753 StubRoutines::_throw_StackOverflowError_entry = generate_throw_exception("StackOverflowError throw_exception", 3754 CAST_FROM_FN_PTR(address, SharedRuntime::throw_StackOverflowError)); 3755 StubRoutines::_throw_delayed_StackOverflowError_entry = generate_throw_exception("delayed StackOverflowError throw_exception", 3756 CAST_FROM_FN_PTR(address, SharedRuntime::throw_delayed_StackOverflowError)); 3757 3758 if (UseCRC32Intrinsics) { 3759 // set table address before stub generation which use it 3760 StubRoutines::_crc_table_adr = (address)StubRoutines::x86::_crc_table; 3761 StubRoutines::_updateBytesCRC32 = generate_updateBytesCRC32(); 3762 } 3763 3764 if (UseCRC32CIntrinsics) { 3765 bool supports_clmul = VM_Version::supports_clmul(); 3766 StubRoutines::x86::generate_CRC32C_table(supports_clmul); 3767 StubRoutines::_crc32c_table_addr = (address)StubRoutines::x86::_crc32c_table; 3768 StubRoutines::_updateBytesCRC32C = generate_updateBytesCRC32C(supports_clmul); 3769 } 3770 if (VM_Version::supports_sse2() && UseLibmIntrinsic && InlineIntrinsics) { 3771 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin) || 3772 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos) || 3773 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dtan)) { 3774 StubRoutines::x86::_L_2il0floatpacket_0_adr = (address)StubRoutines::x86::_L_2il0floatpacket_0; 3775 StubRoutines::x86::_Pi4Inv_adr = (address)StubRoutines::x86::_Pi4Inv; 3776 StubRoutines::x86::_Pi4x3_adr = (address)StubRoutines::x86::_Pi4x3; 3777 StubRoutines::x86::_Pi4x4_adr = (address)StubRoutines::x86::_Pi4x4; 3778 StubRoutines::x86::_ones_adr = (address)StubRoutines::x86::_ones; 3779 } 3780 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dexp)) { 3781 StubRoutines::_dexp = generate_libmExp(); 3782 } 3783 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dlog)) { 3784 StubRoutines::_dlog = generate_libmLog(); 3785 } 3786 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dlog10)) { 3787 StubRoutines::_dlog10 = generate_libmLog10(); 3788 } 3789 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dpow)) { 3790 StubRoutines::_dpow = generate_libmPow(); 3791 } 3792 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin) || 3793 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos) || 3794 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dtan)) { 3795 StubRoutines::_dlibm_reduce_pi04l = generate_libm_reduce_pi04l(); 3796 } 3797 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin) || 3798 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos)) { 3799 StubRoutines::_dlibm_sin_cos_huge = generate_libm_sin_cos_huge(); 3800 } 3801 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin)) { 3802 StubRoutines::_dsin = generate_libmSin(); 3803 } 3804 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos)) { 3805 StubRoutines::_dcos = generate_libmCos(); 3806 } 3807 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dtan)) { 3808 StubRoutines::_dlibm_tan_cot_huge = generate_libm_tan_cot_huge(); 3809 StubRoutines::_dtan = generate_libmTan(); 3810 } 3811 } 3812 } 3813 3814 void generate_all() { 3815 // Generates all stubs and initializes the entry points 3816 3817 // These entry points require SharedInfo::stack0 to be set up in non-core builds 3818 // and need to be relocatable, so they each fabricate a RuntimeStub internally. 3819 StubRoutines::_throw_AbstractMethodError_entry = generate_throw_exception("AbstractMethodError throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_AbstractMethodError)); 3820 StubRoutines::_throw_IncompatibleClassChangeError_entry= generate_throw_exception("IncompatibleClassChangeError throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_IncompatibleClassChangeError)); 3821 StubRoutines::_throw_NullPointerException_at_call_entry= generate_throw_exception("NullPointerException at call throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_NullPointerException_at_call)); 3822 3823 //------------------------------------------------------------------------------------------------------------------------ 3824 // entry points that are platform specific 3825 3826 // support for verify_oop (must happen after universe_init) 3827 StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop(); 3828 3829 // arraycopy stubs used by compilers 3830 generate_arraycopy_stubs(); 3831 3832 // don't bother generating these AES intrinsic stubs unless global flag is set 3833 if (UseAESIntrinsics) { 3834 StubRoutines::x86::_key_shuffle_mask_addr = generate_key_shuffle_mask(); // might be needed by the others 3835 3836 StubRoutines::_aescrypt_encryptBlock = generate_aescrypt_encryptBlock(); 3837 StubRoutines::_aescrypt_decryptBlock = generate_aescrypt_decryptBlock(); 3838 StubRoutines::_cipherBlockChaining_encryptAESCrypt = generate_cipherBlockChaining_encryptAESCrypt(); 3839 StubRoutines::_cipherBlockChaining_decryptAESCrypt = generate_cipherBlockChaining_decryptAESCrypt_Parallel(); 3840 } 3841 3842 if (UseAESCTRIntrinsics) { 3843 StubRoutines::x86::_counter_shuffle_mask_addr = generate_counter_shuffle_mask(); 3844 StubRoutines::_counterMode_AESCrypt = generate_counterMode_AESCrypt_Parallel(); 3845 } 3846 3847 if (UseSHA1Intrinsics) { 3848 StubRoutines::x86::_upper_word_mask_addr = generate_upper_word_mask(); 3849 StubRoutines::x86::_shuffle_byte_flip_mask_addr = generate_shuffle_byte_flip_mask(); 3850 StubRoutines::_sha1_implCompress = generate_sha1_implCompress(false, "sha1_implCompress"); 3851 StubRoutines::_sha1_implCompressMB = generate_sha1_implCompress(true, "sha1_implCompressMB"); 3852 } 3853 if (UseSHA256Intrinsics) { 3854 StubRoutines::x86::_k256_adr = (address)StubRoutines::x86::_k256; 3855 StubRoutines::x86::_pshuffle_byte_flip_mask_addr = generate_pshuffle_byte_flip_mask(); 3856 StubRoutines::_sha256_implCompress = generate_sha256_implCompress(false, "sha256_implCompress"); 3857 StubRoutines::_sha256_implCompressMB = generate_sha256_implCompress(true, "sha256_implCompressMB"); 3858 } 3859 3860 // Generate GHASH intrinsics code 3861 if (UseGHASHIntrinsics) { 3862 StubRoutines::x86::_ghash_long_swap_mask_addr = generate_ghash_long_swap_mask(); 3863 StubRoutines::x86::_ghash_byte_swap_mask_addr = generate_ghash_byte_swap_mask(); 3864 StubRoutines::_ghash_processBlocks = generate_ghash_processBlocks(); 3865 } 3866 3867 // Safefetch stubs. 3868 generate_safefetch("SafeFetch32", sizeof(int), &StubRoutines::_safefetch32_entry, 3869 &StubRoutines::_safefetch32_fault_pc, 3870 &StubRoutines::_safefetch32_continuation_pc); 3871 StubRoutines::_safefetchN_entry = StubRoutines::_safefetch32_entry; 3872 StubRoutines::_safefetchN_fault_pc = StubRoutines::_safefetch32_fault_pc; 3873 StubRoutines::_safefetchN_continuation_pc = StubRoutines::_safefetch32_continuation_pc; 3874 } 3875 3876 3877 public: 3878 StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) { 3879 if (all) { 3880 generate_all(); 3881 } else { 3882 generate_initial(); 3883 } 3884 } 3885 }; // end class declaration 3886 3887 3888 void StubGenerator_generate(CodeBuffer* code, bool all) { 3889 StubGenerator g(code, all); 3890 }