1 /* 2 * Copyright (c) 1999, 2018, 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/barrierSetCodeGen.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 } 91 ShouldNotReachHere(); 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 // provide initial value for required masks 157 if (UseAVX > 2) { 158 __ movl(rbx, 0xffff); 159 __ kmovwl(k1, rbx); 160 } 161 162 // save and initialize %mxcsr 163 if (sse_save) { 164 Label skip_ldmx; 165 __ stmxcsr(mxcsr_save); 166 __ movl(rax, mxcsr_save); 167 __ andl(rax, MXCSR_MASK); // Only check control and mask bits 168 ExternalAddress mxcsr_std(StubRoutines::addr_mxcsr_std()); 169 __ cmp32(rax, mxcsr_std); 170 __ jcc(Assembler::equal, skip_ldmx); 171 __ ldmxcsr(mxcsr_std); 172 __ bind(skip_ldmx); 173 } 174 175 // make sure the control word is correct. 176 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); 177 178 #ifdef ASSERT 179 // make sure we have no pending exceptions 180 { Label L; 181 __ movptr(rcx, thread); 182 __ cmpptr(Address(rcx, Thread::pending_exception_offset()), (int32_t)NULL_WORD); 183 __ jcc(Assembler::equal, L); 184 __ stop("StubRoutines::call_stub: entered with pending exception"); 185 __ bind(L); 186 } 187 #endif 188 189 // pass parameters if any 190 BLOCK_COMMENT("pass parameters if any"); 191 Label parameters_done; 192 __ movl(rcx, parameter_size); // parameter counter 193 __ testl(rcx, rcx); 194 __ jcc(Assembler::zero, parameters_done); 195 196 // parameter passing loop 197 198 Label loop; 199 // Copy Java parameters in reverse order (receiver last) 200 // Note that the argument order is inverted in the process 201 // source is rdx[rcx: N-1..0] 202 // dest is rsp[rbx: 0..N-1] 203 204 __ movptr(rdx, parameters); // parameter pointer 205 __ xorptr(rbx, rbx); 206 207 __ BIND(loop); 208 209 // get parameter 210 __ movptr(rax, Address(rdx, rcx, Interpreter::stackElementScale(), -wordSize)); 211 __ movptr(Address(rsp, rbx, Interpreter::stackElementScale(), 212 Interpreter::expr_offset_in_bytes(0)), rax); // store parameter 213 __ increment(rbx); 214 __ decrement(rcx); 215 __ jcc(Assembler::notZero, loop); 216 217 // call Java function 218 __ BIND(parameters_done); 219 __ movptr(rbx, method); // get Method* 220 __ movptr(rax, entry_point); // get entry_point 221 __ mov(rsi, rsp); // set sender sp 222 BLOCK_COMMENT("call Java function"); 223 __ call(rax); 224 225 BLOCK_COMMENT("call_stub_return_address:"); 226 return_address = __ pc(); 227 228 #ifdef COMPILER2 229 { 230 Label L_skip; 231 if (UseSSE >= 2) { 232 __ verify_FPU(0, "call_stub_return"); 233 } else { 234 for (int i = 1; i < 8; i++) { 235 __ ffree(i); 236 } 237 238 // UseSSE <= 1 so double result should be left on TOS 239 __ movl(rsi, result_type); 240 __ cmpl(rsi, T_DOUBLE); 241 __ jcc(Assembler::equal, L_skip); 242 if (UseSSE == 0) { 243 // UseSSE == 0 so float result should be left on TOS 244 __ cmpl(rsi, T_FLOAT); 245 __ jcc(Assembler::equal, L_skip); 246 } 247 __ ffree(0); 248 } 249 __ BIND(L_skip); 250 } 251 #endif // COMPILER2 252 253 // store result depending on type 254 // (everything that is not T_LONG, T_FLOAT or T_DOUBLE is treated as T_INT) 255 __ movptr(rdi, result); 256 Label is_long, is_float, is_double, exit; 257 __ movl(rsi, result_type); 258 __ cmpl(rsi, T_LONG); 259 __ jcc(Assembler::equal, is_long); 260 __ cmpl(rsi, T_FLOAT); 261 __ jcc(Assembler::equal, is_float); 262 __ cmpl(rsi, T_DOUBLE); 263 __ jcc(Assembler::equal, is_double); 264 265 // handle T_INT case 266 __ movl(Address(rdi, 0), rax); 267 __ BIND(exit); 268 269 // check that FPU stack is empty 270 __ verify_FPU(0, "generate_call_stub"); 271 272 // pop parameters 273 __ lea(rsp, rsp_after_call); 274 275 // restore %mxcsr 276 if (sse_save) { 277 __ ldmxcsr(mxcsr_save); 278 } 279 280 // restore rdi, rsi and rbx, 281 __ movptr(rbx, saved_rbx); 282 __ movptr(rsi, saved_rsi); 283 __ movptr(rdi, saved_rdi); 284 __ addptr(rsp, 4*wordSize); 285 286 // return 287 __ pop(rbp); 288 __ ret(0); 289 290 // handle return types different from T_INT 291 __ BIND(is_long); 292 __ movl(Address(rdi, 0 * wordSize), rax); 293 __ movl(Address(rdi, 1 * wordSize), rdx); 294 __ jmp(exit); 295 296 __ BIND(is_float); 297 // interpreter uses xmm0 for return values 298 if (UseSSE >= 1) { 299 __ movflt(Address(rdi, 0), xmm0); 300 } else { 301 __ fstp_s(Address(rdi, 0)); 302 } 303 __ jmp(exit); 304 305 __ BIND(is_double); 306 // interpreter uses xmm0 for return values 307 if (UseSSE >= 2) { 308 __ movdbl(Address(rdi, 0), xmm0); 309 } else { 310 __ fstp_d(Address(rdi, 0)); 311 } 312 __ jmp(exit); 313 314 return start; 315 } 316 317 318 //------------------------------------------------------------------------------------------------------------------------ 319 // Return point for a Java call if there's an exception thrown in Java code. 320 // The exception is caught and transformed into a pending exception stored in 321 // JavaThread that can be tested from within the VM. 322 // 323 // Note: Usually the parameters are removed by the callee. In case of an exception 324 // crossing an activation frame boundary, that is not the case if the callee 325 // is compiled code => need to setup the rsp. 326 // 327 // rax,: exception oop 328 329 address generate_catch_exception() { 330 StubCodeMark mark(this, "StubRoutines", "catch_exception"); 331 const Address rsp_after_call(rbp, -4 * wordSize); // same as in generate_call_stub()! 332 const Address thread (rbp, 9 * wordSize); // same as in generate_call_stub()! 333 address start = __ pc(); 334 335 // get thread directly 336 __ movptr(rcx, thread); 337 #ifdef ASSERT 338 // verify that threads correspond 339 { Label L; 340 __ get_thread(rbx); 341 __ cmpptr(rbx, rcx); 342 __ jcc(Assembler::equal, L); 343 __ stop("StubRoutines::catch_exception: threads must correspond"); 344 __ bind(L); 345 } 346 #endif 347 // set pending exception 348 __ verify_oop(rax); 349 __ movptr(Address(rcx, Thread::pending_exception_offset()), rax ); 350 __ lea(Address(rcx, Thread::exception_file_offset ()), 351 ExternalAddress((address)__FILE__)); 352 __ movl(Address(rcx, Thread::exception_line_offset ()), __LINE__ ); 353 // complete return to VM 354 assert(StubRoutines::_call_stub_return_address != NULL, "_call_stub_return_address must have been generated before"); 355 __ jump(RuntimeAddress(StubRoutines::_call_stub_return_address)); 356 357 return start; 358 } 359 360 361 //------------------------------------------------------------------------------------------------------------------------ 362 // Continuation point for runtime calls returning with a pending exception. 363 // The pending exception check happened in the runtime or native call stub. 364 // The pending exception in Thread is converted into a Java-level exception. 365 // 366 // Contract with Java-level exception handlers: 367 // rax: exception 368 // rdx: throwing pc 369 // 370 // NOTE: At entry of this stub, exception-pc must be on stack !! 371 372 address generate_forward_exception() { 373 StubCodeMark mark(this, "StubRoutines", "forward exception"); 374 address start = __ pc(); 375 const Register thread = rcx; 376 377 // other registers used in this stub 378 const Register exception_oop = rax; 379 const Register handler_addr = rbx; 380 const Register exception_pc = rdx; 381 382 // Upon entry, the sp points to the return address returning into Java 383 // (interpreted or compiled) code; i.e., the return address becomes the 384 // throwing pc. 385 // 386 // Arguments pushed before the runtime call are still on the stack but 387 // the exception handler will reset the stack pointer -> ignore them. 388 // A potential result in registers can be ignored as well. 389 390 #ifdef ASSERT 391 // make sure this code is only executed if there is a pending exception 392 { Label L; 393 __ get_thread(thread); 394 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); 395 __ jcc(Assembler::notEqual, L); 396 __ stop("StubRoutines::forward exception: no pending exception (1)"); 397 __ bind(L); 398 } 399 #endif 400 401 // compute exception handler into rbx, 402 __ get_thread(thread); 403 __ movptr(exception_pc, Address(rsp, 0)); 404 BLOCK_COMMENT("call exception_handler_for_return_address"); 405 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), thread, exception_pc); 406 __ mov(handler_addr, rax); 407 408 // setup rax & rdx, remove return address & clear pending exception 409 __ get_thread(thread); 410 __ pop(exception_pc); 411 __ movptr(exception_oop, Address(thread, Thread::pending_exception_offset())); 412 __ movptr(Address(thread, Thread::pending_exception_offset()), NULL_WORD); 413 414 #ifdef ASSERT 415 // make sure exception is set 416 { Label L; 417 __ testptr(exception_oop, exception_oop); 418 __ jcc(Assembler::notEqual, L); 419 __ stop("StubRoutines::forward exception: no pending exception (2)"); 420 __ bind(L); 421 } 422 #endif 423 424 // Verify that there is really a valid exception in RAX. 425 __ verify_oop(exception_oop); 426 427 // continue at exception handler (return address removed) 428 // rax: exception 429 // rbx: exception handler 430 // rdx: throwing pc 431 __ jmp(handler_addr); 432 433 return start; 434 } 435 436 437 //---------------------------------------------------------------------------------------------------- 438 // Support for int32_t Atomic::xchg(int32_t exchange_value, volatile int32_t* dest) 439 // 440 // xchg exists as far back as 8086, lock needed for MP only 441 // Stack layout immediately after call: 442 // 443 // 0 [ret addr ] <--- rsp 444 // 1 [ ex ] 445 // 2 [ dest ] 446 // 447 // Result: *dest <- ex, return (old *dest) 448 // 449 // Note: win32 does not currently use this code 450 451 address generate_atomic_xchg() { 452 StubCodeMark mark(this, "StubRoutines", "atomic_xchg"); 453 address start = __ pc(); 454 455 __ push(rdx); 456 Address exchange(rsp, 2 * wordSize); 457 Address dest_addr(rsp, 3 * wordSize); 458 __ movl(rax, exchange); 459 __ movptr(rdx, dest_addr); 460 __ xchgl(rax, Address(rdx, 0)); 461 __ pop(rdx); 462 __ ret(0); 463 464 return start; 465 } 466 467 //---------------------------------------------------------------------------------------------------- 468 // Support for void verify_mxcsr() 469 // 470 // This routine is used with -Xcheck:jni to verify that native 471 // JNI code does not return to Java code without restoring the 472 // MXCSR register to our expected state. 473 474 475 address generate_verify_mxcsr() { 476 StubCodeMark mark(this, "StubRoutines", "verify_mxcsr"); 477 address start = __ pc(); 478 479 const Address mxcsr_save(rsp, 0); 480 481 if (CheckJNICalls && UseSSE > 0 ) { 482 Label ok_ret; 483 ExternalAddress mxcsr_std(StubRoutines::addr_mxcsr_std()); 484 __ push(rax); 485 __ subptr(rsp, wordSize); // allocate a temp location 486 __ stmxcsr(mxcsr_save); 487 __ movl(rax, mxcsr_save); 488 __ andl(rax, MXCSR_MASK); 489 __ cmp32(rax, mxcsr_std); 490 __ jcc(Assembler::equal, ok_ret); 491 492 __ warn("MXCSR changed by native JNI code."); 493 494 __ ldmxcsr(mxcsr_std); 495 496 __ bind(ok_ret); 497 __ addptr(rsp, wordSize); 498 __ pop(rax); 499 } 500 501 __ ret(0); 502 503 return start; 504 } 505 506 507 //--------------------------------------------------------------------------- 508 // Support for void verify_fpu_cntrl_wrd() 509 // 510 // This routine is used with -Xcheck:jni to verify that native 511 // JNI code does not return to Java code without restoring the 512 // FP control word to our expected state. 513 514 address generate_verify_fpu_cntrl_wrd() { 515 StubCodeMark mark(this, "StubRoutines", "verify_spcw"); 516 address start = __ pc(); 517 518 const Address fpu_cntrl_wrd_save(rsp, 0); 519 520 if (CheckJNICalls) { 521 Label ok_ret; 522 __ push(rax); 523 __ subptr(rsp, wordSize); // allocate a temp location 524 __ fnstcw(fpu_cntrl_wrd_save); 525 __ movl(rax, fpu_cntrl_wrd_save); 526 __ andl(rax, FPU_CNTRL_WRD_MASK); 527 ExternalAddress fpu_std(StubRoutines::addr_fpu_cntrl_wrd_std()); 528 __ cmp32(rax, fpu_std); 529 __ jcc(Assembler::equal, ok_ret); 530 531 __ warn("Floating point control word changed by native JNI code."); 532 533 __ fldcw(fpu_std); 534 535 __ bind(ok_ret); 536 __ addptr(rsp, wordSize); 537 __ pop(rax); 538 } 539 540 __ ret(0); 541 542 return start; 543 } 544 545 //--------------------------------------------------------------------------- 546 // Wrapper for slow-case handling of double-to-integer conversion 547 // d2i or f2i fast case failed either because it is nan or because 548 // of under/overflow. 549 // Input: FPU TOS: float value 550 // Output: rax, (rdx): integer (long) result 551 552 address generate_d2i_wrapper(BasicType t, address fcn) { 553 StubCodeMark mark(this, "StubRoutines", "d2i_wrapper"); 554 address start = __ pc(); 555 556 // Capture info about frame layout 557 enum layout { FPUState_off = 0, 558 rbp_off = FPUStateSizeInWords, 559 rdi_off, 560 rsi_off, 561 rcx_off, 562 rbx_off, 563 saved_argument_off, 564 saved_argument_off2, // 2nd half of double 565 framesize 566 }; 567 568 assert(FPUStateSizeInWords == 27, "update stack layout"); 569 570 // Save outgoing argument to stack across push_FPU_state() 571 __ subptr(rsp, wordSize * 2); 572 __ fstp_d(Address(rsp, 0)); 573 574 // Save CPU & FPU state 575 __ push(rbx); 576 __ push(rcx); 577 __ push(rsi); 578 __ push(rdi); 579 __ push(rbp); 580 __ push_FPU_state(); 581 582 // push_FPU_state() resets the FP top of stack 583 // Load original double into FP top of stack 584 __ fld_d(Address(rsp, saved_argument_off * wordSize)); 585 // Store double into stack as outgoing argument 586 __ subptr(rsp, wordSize*2); 587 __ fst_d(Address(rsp, 0)); 588 589 // Prepare FPU for doing math in C-land 590 __ empty_FPU_stack(); 591 // Call the C code to massage the double. Result in EAX 592 if (t == T_INT) 593 { BLOCK_COMMENT("SharedRuntime::d2i"); } 594 else if (t == T_LONG) 595 { BLOCK_COMMENT("SharedRuntime::d2l"); } 596 __ call_VM_leaf( fcn, 2 ); 597 598 // Restore CPU & FPU state 599 __ pop_FPU_state(); 600 __ pop(rbp); 601 __ pop(rdi); 602 __ pop(rsi); 603 __ pop(rcx); 604 __ pop(rbx); 605 __ addptr(rsp, wordSize * 2); 606 607 __ ret(0); 608 609 return start; 610 } 611 612 613 //---------------------------------------------------------------------------------------------------- 614 // Non-destructive plausibility checks for oops 615 616 address generate_verify_oop() { 617 StubCodeMark mark(this, "StubRoutines", "verify_oop"); 618 address start = __ pc(); 619 620 // Incoming arguments on stack after saving rax,: 621 // 622 // [tos ]: saved rdx 623 // [tos + 1]: saved EFLAGS 624 // [tos + 2]: return address 625 // [tos + 3]: char* error message 626 // [tos + 4]: oop object to verify 627 // [tos + 5]: saved rax, - saved by caller and bashed 628 629 Label exit, error; 630 __ pushf(); 631 __ incrementl(ExternalAddress((address) StubRoutines::verify_oop_count_addr())); 632 __ push(rdx); // save rdx 633 // make sure object is 'reasonable' 634 __ movptr(rax, Address(rsp, 4 * wordSize)); // get object 635 __ testptr(rax, rax); 636 __ jcc(Assembler::zero, exit); // if obj is NULL it is ok 637 638 // Check if the oop is in the right area of memory 639 const int oop_mask = Universe::verify_oop_mask(); 640 const int oop_bits = Universe::verify_oop_bits(); 641 __ mov(rdx, rax); 642 __ andptr(rdx, oop_mask); 643 __ cmpptr(rdx, oop_bits); 644 __ jcc(Assembler::notZero, error); 645 646 // make sure klass is 'reasonable', which is not zero. 647 __ movptr(rax, Address(rax, oopDesc::klass_offset_in_bytes())); // get klass 648 __ testptr(rax, rax); 649 __ jcc(Assembler::zero, error); // if klass is NULL it is broken 650 651 // return if everything seems ok 652 __ bind(exit); 653 __ movptr(rax, Address(rsp, 5 * wordSize)); // get saved rax, back 654 __ pop(rdx); // restore rdx 655 __ popf(); // restore EFLAGS 656 __ ret(3 * wordSize); // pop arguments 657 658 // handle errors 659 __ bind(error); 660 __ movptr(rax, Address(rsp, 5 * wordSize)); // get saved rax, back 661 __ pop(rdx); // get saved rdx back 662 __ popf(); // get saved EFLAGS off stack -- will be ignored 663 __ pusha(); // push registers (eip = return address & msg are already pushed) 664 BLOCK_COMMENT("call MacroAssembler::debug"); 665 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, MacroAssembler::debug32))); 666 __ popa(); 667 __ ret(3 * wordSize); // pop arguments 668 return start; 669 } 670 671 672 // Copy 64 bytes chunks 673 // 674 // Inputs: 675 // from - source array address 676 // to_from - destination array address - from 677 // qword_count - 8-bytes element count, negative 678 // 679 void xmm_copy_forward(Register from, Register to_from, Register qword_count) { 680 assert( UseSSE >= 2, "supported cpu only" ); 681 Label L_copy_64_bytes_loop, L_copy_64_bytes, L_copy_8_bytes, L_exit; 682 if (UseAVX > 2) { 683 __ push(rbx); 684 __ movl(rbx, 0xffff); 685 __ kmovwl(k1, rbx); 686 __ pop(rbx); 687 } 688 // Copy 64-byte chunks 689 __ jmpb(L_copy_64_bytes); 690 __ align(OptoLoopAlignment); 691 __ BIND(L_copy_64_bytes_loop); 692 693 if (UseUnalignedLoadStores) { 694 if (UseAVX > 2) { 695 __ evmovdqul(xmm0, Address(from, 0), Assembler::AVX_512bit); 696 __ evmovdqul(Address(from, to_from, Address::times_1, 0), xmm0, Assembler::AVX_512bit); 697 } else if (UseAVX == 2) { 698 __ vmovdqu(xmm0, Address(from, 0)); 699 __ vmovdqu(Address(from, to_from, Address::times_1, 0), xmm0); 700 __ vmovdqu(xmm1, Address(from, 32)); 701 __ vmovdqu(Address(from, to_from, Address::times_1, 32), xmm1); 702 } else { 703 __ movdqu(xmm0, Address(from, 0)); 704 __ movdqu(Address(from, to_from, Address::times_1, 0), xmm0); 705 __ movdqu(xmm1, Address(from, 16)); 706 __ movdqu(Address(from, to_from, Address::times_1, 16), xmm1); 707 __ movdqu(xmm2, Address(from, 32)); 708 __ movdqu(Address(from, to_from, Address::times_1, 32), xmm2); 709 __ movdqu(xmm3, Address(from, 48)); 710 __ movdqu(Address(from, to_from, Address::times_1, 48), xmm3); 711 } 712 } else { 713 __ movq(xmm0, Address(from, 0)); 714 __ movq(Address(from, to_from, Address::times_1, 0), xmm0); 715 __ movq(xmm1, Address(from, 8)); 716 __ movq(Address(from, to_from, Address::times_1, 8), xmm1); 717 __ movq(xmm2, Address(from, 16)); 718 __ movq(Address(from, to_from, Address::times_1, 16), xmm2); 719 __ movq(xmm3, Address(from, 24)); 720 __ movq(Address(from, to_from, Address::times_1, 24), xmm3); 721 __ movq(xmm4, Address(from, 32)); 722 __ movq(Address(from, to_from, Address::times_1, 32), xmm4); 723 __ movq(xmm5, Address(from, 40)); 724 __ movq(Address(from, to_from, Address::times_1, 40), xmm5); 725 __ movq(xmm6, Address(from, 48)); 726 __ movq(Address(from, to_from, Address::times_1, 48), xmm6); 727 __ movq(xmm7, Address(from, 56)); 728 __ movq(Address(from, to_from, Address::times_1, 56), xmm7); 729 } 730 731 __ addl(from, 64); 732 __ BIND(L_copy_64_bytes); 733 __ subl(qword_count, 8); 734 __ jcc(Assembler::greaterEqual, L_copy_64_bytes_loop); 735 736 if (UseUnalignedLoadStores && (UseAVX == 2)) { 737 // clean upper bits of YMM registers 738 __ vpxor(xmm0, xmm0); 739 __ vpxor(xmm1, xmm1); 740 } 741 __ addl(qword_count, 8); 742 __ jccb(Assembler::zero, L_exit); 743 // 744 // length is too short, just copy qwords 745 // 746 __ BIND(L_copy_8_bytes); 747 __ movq(xmm0, Address(from, 0)); 748 __ movq(Address(from, to_from, Address::times_1), xmm0); 749 __ addl(from, 8); 750 __ decrement(qword_count); 751 __ jcc(Assembler::greater, L_copy_8_bytes); 752 __ BIND(L_exit); 753 } 754 755 // Copy 64 bytes chunks 756 // 757 // Inputs: 758 // from - source array address 759 // to_from - destination array address - from 760 // qword_count - 8-bytes element count, negative 761 // 762 void mmx_copy_forward(Register from, Register to_from, Register qword_count) { 763 assert( VM_Version::supports_mmx(), "supported cpu only" ); 764 Label L_copy_64_bytes_loop, L_copy_64_bytes, L_copy_8_bytes, L_exit; 765 // Copy 64-byte chunks 766 __ jmpb(L_copy_64_bytes); 767 __ align(OptoLoopAlignment); 768 __ BIND(L_copy_64_bytes_loop); 769 __ movq(mmx0, Address(from, 0)); 770 __ movq(mmx1, Address(from, 8)); 771 __ movq(mmx2, Address(from, 16)); 772 __ movq(Address(from, to_from, Address::times_1, 0), mmx0); 773 __ movq(mmx3, Address(from, 24)); 774 __ movq(Address(from, to_from, Address::times_1, 8), mmx1); 775 __ movq(mmx4, Address(from, 32)); 776 __ movq(Address(from, to_from, Address::times_1, 16), mmx2); 777 __ movq(mmx5, Address(from, 40)); 778 __ movq(Address(from, to_from, Address::times_1, 24), mmx3); 779 __ movq(mmx6, Address(from, 48)); 780 __ movq(Address(from, to_from, Address::times_1, 32), mmx4); 781 __ movq(mmx7, Address(from, 56)); 782 __ movq(Address(from, to_from, Address::times_1, 40), mmx5); 783 __ movq(Address(from, to_from, Address::times_1, 48), mmx6); 784 __ movq(Address(from, to_from, Address::times_1, 56), mmx7); 785 __ addptr(from, 64); 786 __ BIND(L_copy_64_bytes); 787 __ subl(qword_count, 8); 788 __ jcc(Assembler::greaterEqual, L_copy_64_bytes_loop); 789 __ addl(qword_count, 8); 790 __ jccb(Assembler::zero, L_exit); 791 // 792 // length is too short, just copy qwords 793 // 794 __ BIND(L_copy_8_bytes); 795 __ movq(mmx0, Address(from, 0)); 796 __ movq(Address(from, to_from, Address::times_1), mmx0); 797 __ addptr(from, 8); 798 __ decrement(qword_count); 799 __ jcc(Assembler::greater, L_copy_8_bytes); 800 __ BIND(L_exit); 801 __ emms(); 802 } 803 804 address generate_disjoint_copy(BasicType t, bool aligned, 805 Address::ScaleFactor sf, 806 address* entry, const char *name, 807 bool dest_uninitialized = false) { 808 __ align(CodeEntryAlignment); 809 StubCodeMark mark(this, "StubRoutines", name); 810 address start = __ pc(); 811 812 Label L_0_count, L_exit, L_skip_align1, L_skip_align2, L_copy_byte; 813 Label L_copy_2_bytes, L_copy_4_bytes, L_copy_64_bytes; 814 815 int shift = Address::times_ptr - sf; 816 817 const Register from = rsi; // source array address 818 const Register to = rdi; // destination array address 819 const Register count = rcx; // elements count 820 const Register to_from = to; // (to - from) 821 const Register saved_to = rdx; // saved destination array address 822 823 __ enter(); // required for proper stackwalking of RuntimeStub frame 824 __ push(rsi); 825 __ push(rdi); 826 __ movptr(from , Address(rsp, 12+ 4)); 827 __ movptr(to , Address(rsp, 12+ 8)); 828 __ movl(count, Address(rsp, 12+ 12)); 829 830 if (entry != NULL) { 831 *entry = __ pc(); // Entry point from conjoint arraycopy stub. 832 BLOCK_COMMENT("Entry:"); 833 } 834 835 if (t == T_OBJECT) { 836 __ testl(count, count); 837 __ jcc(Assembler::zero, L_0_count); 838 } 839 840 BarrierSetCodeGen *bs = Universe::heap()->barrier_set()->code_gen(); 841 DecoratorSet decorators = ARRAYCOPY_DISJOINT; 842 if (dest_uninitialized) { 843 decorators |= AS_DEST_NOT_INITIALIZED; 844 } 845 if (aligned) { 846 decorators |= ARRAYCOPY_ALIGNED; 847 } 848 849 bs->arraycopy_prologue(_masm, decorators, t, from, to, count); 850 851 __ subptr(to, from); // to --> to_from 852 __ cmpl(count, 2<<shift); // Short arrays (< 8 bytes) copy by element 853 __ jcc(Assembler::below, L_copy_4_bytes); // use unsigned cmp 854 if (!UseUnalignedLoadStores && !aligned && (t == T_BYTE || t == T_SHORT)) { 855 // align source address at 4 bytes address boundary 856 if (t == T_BYTE) { 857 // One byte misalignment happens only for byte arrays 858 __ testl(from, 1); 859 __ jccb(Assembler::zero, L_skip_align1); 860 __ movb(rax, Address(from, 0)); 861 __ movb(Address(from, to_from, Address::times_1, 0), rax); 862 __ increment(from); 863 __ decrement(count); 864 __ BIND(L_skip_align1); 865 } 866 // Two bytes misalignment happens only for byte and short (char) arrays 867 __ testl(from, 2); 868 __ jccb(Assembler::zero, L_skip_align2); 869 __ movw(rax, Address(from, 0)); 870 __ movw(Address(from, to_from, Address::times_1, 0), rax); 871 __ addptr(from, 2); 872 __ subl(count, 1<<(shift-1)); 873 __ BIND(L_skip_align2); 874 } 875 if (!VM_Version::supports_mmx()) { 876 __ mov(rax, count); // save 'count' 877 __ shrl(count, shift); // bytes count 878 __ addptr(to_from, from);// restore 'to' 879 __ rep_mov(); 880 __ subptr(to_from, from);// restore 'to_from' 881 __ mov(count, rax); // restore 'count' 882 __ jmpb(L_copy_2_bytes); // all dwords were copied 883 } else { 884 if (!UseUnalignedLoadStores) { 885 // align to 8 bytes, we know we are 4 byte aligned to start 886 __ testptr(from, 4); 887 __ jccb(Assembler::zero, L_copy_64_bytes); 888 __ movl(rax, Address(from, 0)); 889 __ movl(Address(from, to_from, Address::times_1, 0), rax); 890 __ addptr(from, 4); 891 __ subl(count, 1<<shift); 892 } 893 __ BIND(L_copy_64_bytes); 894 __ mov(rax, count); 895 __ shrl(rax, shift+1); // 8 bytes chunk count 896 // 897 // Copy 8-byte chunks through MMX registers, 8 per iteration of the loop 898 // 899 if (UseXMMForArrayCopy) { 900 xmm_copy_forward(from, to_from, rax); 901 } else { 902 mmx_copy_forward(from, to_from, rax); 903 } 904 } 905 // copy tailing dword 906 __ BIND(L_copy_4_bytes); 907 __ testl(count, 1<<shift); 908 __ jccb(Assembler::zero, L_copy_2_bytes); 909 __ movl(rax, Address(from, 0)); 910 __ movl(Address(from, to_from, Address::times_1, 0), rax); 911 if (t == T_BYTE || t == T_SHORT) { 912 __ addptr(from, 4); 913 __ BIND(L_copy_2_bytes); 914 // copy tailing word 915 __ testl(count, 1<<(shift-1)); 916 __ jccb(Assembler::zero, L_copy_byte); 917 __ movw(rax, Address(from, 0)); 918 __ movw(Address(from, to_from, Address::times_1, 0), rax); 919 if (t == T_BYTE) { 920 __ addptr(from, 2); 921 __ BIND(L_copy_byte); 922 // copy tailing byte 923 __ testl(count, 1); 924 __ jccb(Assembler::zero, L_exit); 925 __ movb(rax, Address(from, 0)); 926 __ movb(Address(from, to_from, Address::times_1, 0), rax); 927 __ BIND(L_exit); 928 } else { 929 __ BIND(L_copy_byte); 930 } 931 } else { 932 __ BIND(L_copy_2_bytes); 933 } 934 935 __ movl(count, Address(rsp, 12+12)); // reread 'count' 936 bs->arraycopy_epilogue(_masm, decorators, t, from, to, count); 937 938 if (t == T_OBJECT) { 939 __ BIND(L_0_count); 940 } 941 inc_copy_counter_np(t); 942 __ pop(rdi); 943 __ pop(rsi); 944 __ leave(); // required for proper stackwalking of RuntimeStub frame 945 __ vzeroupper(); 946 __ xorptr(rax, rax); // return 0 947 __ ret(0); 948 return start; 949 } 950 951 952 address generate_fill(BasicType t, bool aligned, const char *name) { 953 __ align(CodeEntryAlignment); 954 StubCodeMark mark(this, "StubRoutines", name); 955 address start = __ pc(); 956 957 BLOCK_COMMENT("Entry:"); 958 959 const Register to = rdi; // source array address 960 const Register value = rdx; // value 961 const Register count = rsi; // elements count 962 963 __ enter(); // required for proper stackwalking of RuntimeStub frame 964 __ push(rsi); 965 __ push(rdi); 966 __ movptr(to , Address(rsp, 12+ 4)); 967 __ movl(value, Address(rsp, 12+ 8)); 968 __ movl(count, Address(rsp, 12+ 12)); 969 970 __ generate_fill(t, aligned, to, value, count, rax, xmm0); 971 972 __ pop(rdi); 973 __ pop(rsi); 974 __ leave(); // required for proper stackwalking of RuntimeStub frame 975 __ ret(0); 976 return start; 977 } 978 979 address generate_conjoint_copy(BasicType t, bool aligned, 980 Address::ScaleFactor sf, 981 address nooverlap_target, 982 address* entry, const char *name, 983 bool dest_uninitialized = false) { 984 __ align(CodeEntryAlignment); 985 StubCodeMark mark(this, "StubRoutines", name); 986 address start = __ pc(); 987 988 Label L_0_count, L_exit, L_skip_align1, L_skip_align2, L_copy_byte; 989 Label L_copy_2_bytes, L_copy_4_bytes, L_copy_8_bytes, L_copy_8_bytes_loop; 990 991 int shift = Address::times_ptr - sf; 992 993 const Register src = rax; // source array address 994 const Register dst = rdx; // destination array address 995 const Register from = rsi; // source array address 996 const Register to = rdi; // destination array address 997 const Register count = rcx; // elements count 998 const Register end = rax; // array end address 999 1000 __ enter(); // required for proper stackwalking of RuntimeStub frame 1001 __ push(rsi); 1002 __ push(rdi); 1003 __ movptr(src , Address(rsp, 12+ 4)); // from 1004 __ movptr(dst , Address(rsp, 12+ 8)); // to 1005 __ movl2ptr(count, Address(rsp, 12+12)); // count 1006 1007 if (entry != NULL) { 1008 *entry = __ pc(); // Entry point from generic arraycopy stub. 1009 BLOCK_COMMENT("Entry:"); 1010 } 1011 1012 // nooverlap_target expects arguments in rsi and rdi. 1013 __ mov(from, src); 1014 __ mov(to , dst); 1015 1016 // arrays overlap test: dispatch to disjoint stub if necessary. 1017 RuntimeAddress nooverlap(nooverlap_target); 1018 __ cmpptr(dst, src); 1019 __ lea(end, Address(src, count, sf, 0)); // src + count * elem_size 1020 __ jump_cc(Assembler::belowEqual, nooverlap); 1021 __ cmpptr(dst, end); 1022 __ jump_cc(Assembler::aboveEqual, nooverlap); 1023 1024 if (t == T_OBJECT) { 1025 __ testl(count, count); 1026 __ jcc(Assembler::zero, L_0_count); 1027 } 1028 1029 BarrierSetCodeGen *bs = Universe::heap()->barrier_set()->code_gen(); 1030 DecoratorSet decorators = 0; 1031 if (dest_uninitialized) { 1032 decorators |= AS_DEST_NOT_INITIALIZED; 1033 } 1034 if (aligned) { 1035 decorators |= ARRAYCOPY_ALIGNED; 1036 } 1037 bs->arraycopy_prologue(_masm, decorators, t, from, to, count); 1038 1039 // copy from high to low 1040 __ cmpl(count, 2<<shift); // Short arrays (< 8 bytes) copy by element 1041 __ jcc(Assembler::below, L_copy_4_bytes); // use unsigned cmp 1042 if (t == T_BYTE || t == T_SHORT) { 1043 // Align the end of destination array at 4 bytes address boundary 1044 __ lea(end, Address(dst, count, sf, 0)); 1045 if (t == T_BYTE) { 1046 // One byte misalignment happens only for byte arrays 1047 __ testl(end, 1); 1048 __ jccb(Assembler::zero, L_skip_align1); 1049 __ decrement(count); 1050 __ movb(rdx, Address(from, count, sf, 0)); 1051 __ movb(Address(to, count, sf, 0), rdx); 1052 __ BIND(L_skip_align1); 1053 } 1054 // Two bytes misalignment happens only for byte and short (char) arrays 1055 __ testl(end, 2); 1056 __ jccb(Assembler::zero, L_skip_align2); 1057 __ subptr(count, 1<<(shift-1)); 1058 __ movw(rdx, Address(from, count, sf, 0)); 1059 __ movw(Address(to, count, sf, 0), rdx); 1060 __ BIND(L_skip_align2); 1061 __ cmpl(count, 2<<shift); // Short arrays (< 8 bytes) copy by element 1062 __ jcc(Assembler::below, L_copy_4_bytes); 1063 } 1064 1065 if (!VM_Version::supports_mmx()) { 1066 __ std(); 1067 __ mov(rax, count); // Save 'count' 1068 __ mov(rdx, to); // Save 'to' 1069 __ lea(rsi, Address(from, count, sf, -4)); 1070 __ lea(rdi, Address(to , count, sf, -4)); 1071 __ shrptr(count, shift); // bytes count 1072 __ rep_mov(); 1073 __ cld(); 1074 __ mov(count, rax); // restore 'count' 1075 __ andl(count, (1<<shift)-1); // mask the number of rest elements 1076 __ movptr(from, Address(rsp, 12+4)); // reread 'from' 1077 __ mov(to, rdx); // restore 'to' 1078 __ jmpb(L_copy_2_bytes); // all dword were copied 1079 } else { 1080 // Align to 8 bytes the end of array. It is aligned to 4 bytes already. 1081 __ testptr(end, 4); 1082 __ jccb(Assembler::zero, L_copy_8_bytes); 1083 __ subl(count, 1<<shift); 1084 __ movl(rdx, Address(from, count, sf, 0)); 1085 __ movl(Address(to, count, sf, 0), rdx); 1086 __ jmpb(L_copy_8_bytes); 1087 1088 __ align(OptoLoopAlignment); 1089 // Move 8 bytes 1090 __ BIND(L_copy_8_bytes_loop); 1091 if (UseXMMForArrayCopy) { 1092 __ movq(xmm0, Address(from, count, sf, 0)); 1093 __ movq(Address(to, count, sf, 0), xmm0); 1094 } else { 1095 __ movq(mmx0, Address(from, count, sf, 0)); 1096 __ movq(Address(to, count, sf, 0), mmx0); 1097 } 1098 __ BIND(L_copy_8_bytes); 1099 __ subl(count, 2<<shift); 1100 __ jcc(Assembler::greaterEqual, L_copy_8_bytes_loop); 1101 __ addl(count, 2<<shift); 1102 if (!UseXMMForArrayCopy) { 1103 __ emms(); 1104 } 1105 } 1106 __ BIND(L_copy_4_bytes); 1107 // copy prefix qword 1108 __ testl(count, 1<<shift); 1109 __ jccb(Assembler::zero, L_copy_2_bytes); 1110 __ movl(rdx, Address(from, count, sf, -4)); 1111 __ movl(Address(to, count, sf, -4), rdx); 1112 1113 if (t == T_BYTE || t == T_SHORT) { 1114 __ subl(count, (1<<shift)); 1115 __ BIND(L_copy_2_bytes); 1116 // copy prefix dword 1117 __ testl(count, 1<<(shift-1)); 1118 __ jccb(Assembler::zero, L_copy_byte); 1119 __ movw(rdx, Address(from, count, sf, -2)); 1120 __ movw(Address(to, count, sf, -2), rdx); 1121 if (t == T_BYTE) { 1122 __ subl(count, 1<<(shift-1)); 1123 __ BIND(L_copy_byte); 1124 // copy prefix byte 1125 __ testl(count, 1); 1126 __ jccb(Assembler::zero, L_exit); 1127 __ movb(rdx, Address(from, 0)); 1128 __ movb(Address(to, 0), rdx); 1129 __ BIND(L_exit); 1130 } else { 1131 __ BIND(L_copy_byte); 1132 } 1133 } else { 1134 __ BIND(L_copy_2_bytes); 1135 } 1136 1137 __ movl2ptr(count, Address(rsp, 12+12)); // reread count 1138 bs->arraycopy_epilogue(_masm, decorators, t, from, to, count); 1139 1140 if (t == T_OBJECT) { 1141 __ BIND(L_0_count); 1142 } 1143 inc_copy_counter_np(t); 1144 __ pop(rdi); 1145 __ pop(rsi); 1146 __ leave(); // required for proper stackwalking of RuntimeStub frame 1147 __ xorptr(rax, rax); // return 0 1148 __ ret(0); 1149 return start; 1150 } 1151 1152 1153 address generate_disjoint_long_copy(address* entry, const char *name) { 1154 __ align(CodeEntryAlignment); 1155 StubCodeMark mark(this, "StubRoutines", name); 1156 address start = __ pc(); 1157 1158 Label L_copy_8_bytes, L_copy_8_bytes_loop; 1159 const Register from = rax; // source array address 1160 const Register to = rdx; // destination array address 1161 const Register count = rcx; // elements count 1162 const Register to_from = rdx; // (to - from) 1163 1164 __ enter(); // required for proper stackwalking of RuntimeStub frame 1165 __ movptr(from , Address(rsp, 8+0)); // from 1166 __ movptr(to , Address(rsp, 8+4)); // to 1167 __ movl2ptr(count, Address(rsp, 8+8)); // count 1168 1169 *entry = __ pc(); // Entry point from conjoint arraycopy stub. 1170 BLOCK_COMMENT("Entry:"); 1171 1172 __ subptr(to, from); // to --> to_from 1173 if (VM_Version::supports_mmx()) { 1174 if (UseXMMForArrayCopy) { 1175 xmm_copy_forward(from, to_from, count); 1176 } else { 1177 mmx_copy_forward(from, to_from, count); 1178 } 1179 } else { 1180 __ jmpb(L_copy_8_bytes); 1181 __ align(OptoLoopAlignment); 1182 __ BIND(L_copy_8_bytes_loop); 1183 __ fild_d(Address(from, 0)); 1184 __ fistp_d(Address(from, to_from, Address::times_1)); 1185 __ addptr(from, 8); 1186 __ BIND(L_copy_8_bytes); 1187 __ decrement(count); 1188 __ jcc(Assembler::greaterEqual, L_copy_8_bytes_loop); 1189 } 1190 inc_copy_counter_np(T_LONG); 1191 __ leave(); // required for proper stackwalking of RuntimeStub frame 1192 __ vzeroupper(); 1193 __ xorptr(rax, rax); // return 0 1194 __ ret(0); 1195 return start; 1196 } 1197 1198 address generate_conjoint_long_copy(address nooverlap_target, 1199 address* entry, const char *name) { 1200 __ align(CodeEntryAlignment); 1201 StubCodeMark mark(this, "StubRoutines", name); 1202 address start = __ pc(); 1203 1204 Label L_copy_8_bytes, L_copy_8_bytes_loop; 1205 const Register from = rax; // source array address 1206 const Register to = rdx; // destination array address 1207 const Register count = rcx; // elements count 1208 const Register end_from = rax; // source array end address 1209 1210 __ enter(); // required for proper stackwalking of RuntimeStub frame 1211 __ movptr(from , Address(rsp, 8+0)); // from 1212 __ movptr(to , Address(rsp, 8+4)); // to 1213 __ movl2ptr(count, Address(rsp, 8+8)); // count 1214 1215 *entry = __ pc(); // Entry point from generic arraycopy stub. 1216 BLOCK_COMMENT("Entry:"); 1217 1218 // arrays overlap test 1219 __ cmpptr(to, from); 1220 RuntimeAddress nooverlap(nooverlap_target); 1221 __ jump_cc(Assembler::belowEqual, nooverlap); 1222 __ lea(end_from, Address(from, count, Address::times_8, 0)); 1223 __ cmpptr(to, end_from); 1224 __ movptr(from, Address(rsp, 8)); // from 1225 __ jump_cc(Assembler::aboveEqual, nooverlap); 1226 1227 __ jmpb(L_copy_8_bytes); 1228 1229 __ align(OptoLoopAlignment); 1230 __ BIND(L_copy_8_bytes_loop); 1231 if (VM_Version::supports_mmx()) { 1232 if (UseXMMForArrayCopy) { 1233 __ movq(xmm0, Address(from, count, Address::times_8)); 1234 __ movq(Address(to, count, Address::times_8), xmm0); 1235 } else { 1236 __ movq(mmx0, Address(from, count, Address::times_8)); 1237 __ movq(Address(to, count, Address::times_8), mmx0); 1238 } 1239 } else { 1240 __ fild_d(Address(from, count, Address::times_8)); 1241 __ fistp_d(Address(to, count, Address::times_8)); 1242 } 1243 __ BIND(L_copy_8_bytes); 1244 __ decrement(count); 1245 __ jcc(Assembler::greaterEqual, L_copy_8_bytes_loop); 1246 1247 if (VM_Version::supports_mmx() && !UseXMMForArrayCopy) { 1248 __ emms(); 1249 } 1250 inc_copy_counter_np(T_LONG); 1251 __ leave(); // required for proper stackwalking of RuntimeStub frame 1252 __ xorptr(rax, rax); // return 0 1253 __ ret(0); 1254 return start; 1255 } 1256 1257 1258 // Helper for generating a dynamic type check. 1259 // The sub_klass must be one of {rbx, rdx, rsi}. 1260 // The temp is killed. 1261 void generate_type_check(Register sub_klass, 1262 Address& super_check_offset_addr, 1263 Address& super_klass_addr, 1264 Register temp, 1265 Label* L_success, Label* L_failure) { 1266 BLOCK_COMMENT("type_check:"); 1267 1268 Label L_fallthrough; 1269 #define LOCAL_JCC(assembler_con, label_ptr) \ 1270 if (label_ptr != NULL) __ jcc(assembler_con, *(label_ptr)); \ 1271 else __ jcc(assembler_con, L_fallthrough) /*omit semi*/ 1272 1273 // The following is a strange variation of the fast path which requires 1274 // one less register, because needed values are on the argument stack. 1275 // __ check_klass_subtype_fast_path(sub_klass, *super_klass*, temp, 1276 // L_success, L_failure, NULL); 1277 assert_different_registers(sub_klass, temp); 1278 1279 int sc_offset = in_bytes(Klass::secondary_super_cache_offset()); 1280 1281 // if the pointers are equal, we are done (e.g., String[] elements) 1282 __ cmpptr(sub_klass, super_klass_addr); 1283 LOCAL_JCC(Assembler::equal, L_success); 1284 1285 // check the supertype display: 1286 __ movl2ptr(temp, super_check_offset_addr); 1287 Address super_check_addr(sub_klass, temp, Address::times_1, 0); 1288 __ movptr(temp, super_check_addr); // load displayed supertype 1289 __ cmpptr(temp, super_klass_addr); // test the super type 1290 LOCAL_JCC(Assembler::equal, L_success); 1291 1292 // if it was a primary super, we can just fail immediately 1293 __ cmpl(super_check_offset_addr, sc_offset); 1294 LOCAL_JCC(Assembler::notEqual, L_failure); 1295 1296 // The repne_scan instruction uses fixed registers, which will get spilled. 1297 // We happen to know this works best when super_klass is in rax. 1298 Register super_klass = temp; 1299 __ movptr(super_klass, super_klass_addr); 1300 __ check_klass_subtype_slow_path(sub_klass, super_klass, noreg, noreg, 1301 L_success, L_failure); 1302 1303 __ bind(L_fallthrough); 1304 1305 if (L_success == NULL) { BLOCK_COMMENT("L_success:"); } 1306 if (L_failure == NULL) { BLOCK_COMMENT("L_failure:"); } 1307 1308 #undef LOCAL_JCC 1309 } 1310 1311 // 1312 // Generate checkcasting array copy stub 1313 // 1314 // Input: 1315 // 4(rsp) - source array address 1316 // 8(rsp) - destination array address 1317 // 12(rsp) - element count, can be zero 1318 // 16(rsp) - size_t ckoff (super_check_offset) 1319 // 20(rsp) - oop ckval (super_klass) 1320 // 1321 // Output: 1322 // rax, == 0 - success 1323 // rax, == -1^K - failure, where K is partial transfer count 1324 // 1325 address generate_checkcast_copy(const char *name, address* entry, bool dest_uninitialized = false) { 1326 __ align(CodeEntryAlignment); 1327 StubCodeMark mark(this, "StubRoutines", name); 1328 address start = __ pc(); 1329 1330 Label L_load_element, L_store_element, L_do_card_marks, L_done; 1331 1332 // register use: 1333 // rax, rdx, rcx -- loop control (end_from, end_to, count) 1334 // rdi, rsi -- element access (oop, klass) 1335 // rbx, -- temp 1336 const Register from = rax; // source array address 1337 const Register to = rdx; // destination array address 1338 const Register length = rcx; // elements count 1339 const Register elem = rdi; // each oop copied 1340 const Register elem_klass = rsi; // each elem._klass (sub_klass) 1341 const Register temp = rbx; // lone remaining temp 1342 1343 __ enter(); // required for proper stackwalking of RuntimeStub frame 1344 1345 __ push(rsi); 1346 __ push(rdi); 1347 __ push(rbx); 1348 1349 Address from_arg(rsp, 16+ 4); // from 1350 Address to_arg(rsp, 16+ 8); // to 1351 Address length_arg(rsp, 16+12); // elements count 1352 Address ckoff_arg(rsp, 16+16); // super_check_offset 1353 Address ckval_arg(rsp, 16+20); // super_klass 1354 1355 // Load up: 1356 __ movptr(from, from_arg); 1357 __ movptr(to, to_arg); 1358 __ movl2ptr(length, length_arg); 1359 1360 if (entry != NULL) { 1361 *entry = __ pc(); // Entry point from generic arraycopy stub. 1362 BLOCK_COMMENT("Entry:"); 1363 } 1364 1365 //--------------------------------------------------------------- 1366 // Assembler stub will be used for this call to arraycopy 1367 // if the two arrays are subtypes of Object[] but the 1368 // destination array type is not equal to or a supertype 1369 // of the source type. Each element must be separately 1370 // checked. 1371 1372 // Loop-invariant addresses. They are exclusive end pointers. 1373 Address end_from_addr(from, length, Address::times_ptr, 0); 1374 Address end_to_addr(to, length, Address::times_ptr, 0); 1375 1376 Register end_from = from; // re-use 1377 Register end_to = to; // re-use 1378 Register count = length; // re-use 1379 1380 // Loop-variant addresses. They assume post-incremented count < 0. 1381 Address from_element_addr(end_from, count, Address::times_ptr, 0); 1382 Address to_element_addr(end_to, count, Address::times_ptr, 0); 1383 Address elem_klass_addr(elem, oopDesc::klass_offset_in_bytes()); 1384 1385 BarrierSetCodeGen *bs = Universe::heap()->barrier_set()->code_gen(); 1386 DecoratorSet decorators = ARRAYCOPY_CHECKCAST; 1387 BasicType type = T_OBJECT; 1388 if (dest_uninitialized) { 1389 decorators |= AS_DEST_NOT_INITIALIZED; 1390 } 1391 1392 bs->arraycopy_prologue(_masm, decorators, type, from, to, count); 1393 1394 // Copy from low to high addresses, indexed from the end of each array. 1395 __ lea(end_from, end_from_addr); 1396 __ lea(end_to, end_to_addr); 1397 assert(length == count, ""); // else fix next line: 1398 __ negptr(count); // negate and test the length 1399 __ jccb(Assembler::notZero, L_load_element); 1400 1401 // Empty array: Nothing to do. 1402 __ xorptr(rax, rax); // return 0 on (trivial) success 1403 __ jmp(L_done); 1404 1405 // ======== begin loop ======== 1406 // (Loop is rotated; its entry is L_load_element.) 1407 // Loop control: 1408 // for (count = -count; count != 0; count++) 1409 // Base pointers src, dst are biased by 8*count,to last element. 1410 __ align(OptoLoopAlignment); 1411 1412 __ BIND(L_store_element); 1413 __ movptr(to_element_addr, elem); // store the oop 1414 __ increment(count); // increment the count toward zero 1415 __ jccb(Assembler::zero, L_do_card_marks); 1416 1417 // ======== loop entry is here ======== 1418 __ BIND(L_load_element); 1419 __ movptr(elem, from_element_addr); // load the oop 1420 __ testptr(elem, elem); 1421 __ jccb(Assembler::zero, L_store_element); 1422 1423 // (Could do a trick here: Remember last successful non-null 1424 // element stored and make a quick oop equality check on it.) 1425 1426 __ movptr(elem_klass, elem_klass_addr); // query the object klass 1427 generate_type_check(elem_klass, ckoff_arg, ckval_arg, temp, 1428 &L_store_element, NULL); 1429 // (On fall-through, we have failed the element type check.) 1430 // ======== end loop ======== 1431 1432 // It was a real error; we must depend on the caller to finish the job. 1433 // Register "count" = -1 * number of *remaining* oops, length_arg = *total* oops. 1434 // Emit GC store barriers for the oops we have copied (length_arg + count), 1435 // and report their number to the caller. 1436 assert_different_registers(to, count, rax); 1437 Label L_post_barrier; 1438 __ addl(count, length_arg); // transfers = (length - remaining) 1439 __ movl2ptr(rax, count); // save the value 1440 __ notptr(rax); // report (-1^K) to caller (does not affect flags) 1441 __ jccb(Assembler::notZero, L_post_barrier); 1442 __ jmp(L_done); // K == 0, nothing was copied, skip post barrier 1443 1444 // Come here on success only. 1445 __ BIND(L_do_card_marks); 1446 __ xorptr(rax, rax); // return 0 on success 1447 __ movl2ptr(count, length_arg); 1448 1449 __ BIND(L_post_barrier); 1450 __ movptr(to, to_arg); // reload 1451 bs->arraycopy_epilogue(_masm, decorators, type, from, to, count); 1452 1453 // Common exit point (success or failure). 1454 __ BIND(L_done); 1455 __ pop(rbx); 1456 __ pop(rdi); 1457 __ pop(rsi); 1458 inc_counter_np(SharedRuntime::_checkcast_array_copy_ctr); 1459 __ leave(); // required for proper stackwalking of RuntimeStub frame 1460 __ ret(0); 1461 1462 return start; 1463 } 1464 1465 // 1466 // Generate 'unsafe' array copy stub 1467 // Though just as safe as the other stubs, it takes an unscaled 1468 // size_t argument instead of an element count. 1469 // 1470 // Input: 1471 // 4(rsp) - source array address 1472 // 8(rsp) - destination array address 1473 // 12(rsp) - byte count, can be zero 1474 // 1475 // Output: 1476 // rax, == 0 - success 1477 // rax, == -1 - need to call System.arraycopy 1478 // 1479 // Examines the alignment of the operands and dispatches 1480 // to a long, int, short, or byte copy loop. 1481 // 1482 address generate_unsafe_copy(const char *name, 1483 address byte_copy_entry, 1484 address short_copy_entry, 1485 address int_copy_entry, 1486 address long_copy_entry) { 1487 1488 Label L_long_aligned, L_int_aligned, L_short_aligned; 1489 1490 __ align(CodeEntryAlignment); 1491 StubCodeMark mark(this, "StubRoutines", name); 1492 address start = __ pc(); 1493 1494 const Register from = rax; // source array address 1495 const Register to = rdx; // destination array address 1496 const Register count = rcx; // elements count 1497 1498 __ enter(); // required for proper stackwalking of RuntimeStub frame 1499 __ push(rsi); 1500 __ push(rdi); 1501 Address from_arg(rsp, 12+ 4); // from 1502 Address to_arg(rsp, 12+ 8); // to 1503 Address count_arg(rsp, 12+12); // byte count 1504 1505 // Load up: 1506 __ movptr(from , from_arg); 1507 __ movptr(to , to_arg); 1508 __ movl2ptr(count, count_arg); 1509 1510 // bump this on entry, not on exit: 1511 inc_counter_np(SharedRuntime::_unsafe_array_copy_ctr); 1512 1513 const Register bits = rsi; 1514 __ mov(bits, from); 1515 __ orptr(bits, to); 1516 __ orptr(bits, count); 1517 1518 __ testl(bits, BytesPerLong-1); 1519 __ jccb(Assembler::zero, L_long_aligned); 1520 1521 __ testl(bits, BytesPerInt-1); 1522 __ jccb(Assembler::zero, L_int_aligned); 1523 1524 __ testl(bits, BytesPerShort-1); 1525 __ jump_cc(Assembler::notZero, RuntimeAddress(byte_copy_entry)); 1526 1527 __ BIND(L_short_aligned); 1528 __ shrptr(count, LogBytesPerShort); // size => short_count 1529 __ movl(count_arg, count); // update 'count' 1530 __ jump(RuntimeAddress(short_copy_entry)); 1531 1532 __ BIND(L_int_aligned); 1533 __ shrptr(count, LogBytesPerInt); // size => int_count 1534 __ movl(count_arg, count); // update 'count' 1535 __ jump(RuntimeAddress(int_copy_entry)); 1536 1537 __ BIND(L_long_aligned); 1538 __ shrptr(count, LogBytesPerLong); // size => qword_count 1539 __ movl(count_arg, count); // update 'count' 1540 __ pop(rdi); // Do pops here since jlong_arraycopy stub does not do it. 1541 __ pop(rsi); 1542 __ jump(RuntimeAddress(long_copy_entry)); 1543 1544 return start; 1545 } 1546 1547 1548 // Perform range checks on the proposed arraycopy. 1549 // Smashes src_pos and dst_pos. (Uses them up for temps.) 1550 void arraycopy_range_checks(Register src, 1551 Register src_pos, 1552 Register dst, 1553 Register dst_pos, 1554 Address& length, 1555 Label& L_failed) { 1556 BLOCK_COMMENT("arraycopy_range_checks:"); 1557 const Register src_end = src_pos; // source array end position 1558 const Register dst_end = dst_pos; // destination array end position 1559 __ addl(src_end, length); // src_pos + length 1560 __ addl(dst_end, length); // dst_pos + length 1561 1562 // if (src_pos + length > arrayOop(src)->length() ) FAIL; 1563 __ cmpl(src_end, Address(src, arrayOopDesc::length_offset_in_bytes())); 1564 __ jcc(Assembler::above, L_failed); 1565 1566 // if (dst_pos + length > arrayOop(dst)->length() ) FAIL; 1567 __ cmpl(dst_end, Address(dst, arrayOopDesc::length_offset_in_bytes())); 1568 __ jcc(Assembler::above, L_failed); 1569 1570 BLOCK_COMMENT("arraycopy_range_checks done"); 1571 } 1572 1573 1574 // 1575 // Generate generic array copy stubs 1576 // 1577 // Input: 1578 // 4(rsp) - src oop 1579 // 8(rsp) - src_pos 1580 // 12(rsp) - dst oop 1581 // 16(rsp) - dst_pos 1582 // 20(rsp) - element count 1583 // 1584 // Output: 1585 // rax, == 0 - success 1586 // rax, == -1^K - failure, where K is partial transfer count 1587 // 1588 address generate_generic_copy(const char *name, 1589 address entry_jbyte_arraycopy, 1590 address entry_jshort_arraycopy, 1591 address entry_jint_arraycopy, 1592 address entry_oop_arraycopy, 1593 address entry_jlong_arraycopy, 1594 address entry_checkcast_arraycopy) { 1595 Label L_failed, L_failed_0, L_objArray; 1596 1597 { int modulus = CodeEntryAlignment; 1598 int target = modulus - 5; // 5 = sizeof jmp(L_failed) 1599 int advance = target - (__ offset() % modulus); 1600 if (advance < 0) advance += modulus; 1601 if (advance > 0) __ nop(advance); 1602 } 1603 StubCodeMark mark(this, "StubRoutines", name); 1604 1605 // Short-hop target to L_failed. Makes for denser prologue code. 1606 __ BIND(L_failed_0); 1607 __ jmp(L_failed); 1608 assert(__ offset() % CodeEntryAlignment == 0, "no further alignment needed"); 1609 1610 __ align(CodeEntryAlignment); 1611 address start = __ pc(); 1612 1613 __ enter(); // required for proper stackwalking of RuntimeStub frame 1614 __ push(rsi); 1615 __ push(rdi); 1616 1617 // bump this on entry, not on exit: 1618 inc_counter_np(SharedRuntime::_generic_array_copy_ctr); 1619 1620 // Input values 1621 Address SRC (rsp, 12+ 4); 1622 Address SRC_POS (rsp, 12+ 8); 1623 Address DST (rsp, 12+12); 1624 Address DST_POS (rsp, 12+16); 1625 Address LENGTH (rsp, 12+20); 1626 1627 //----------------------------------------------------------------------- 1628 // Assembler stub will be used for this call to arraycopy 1629 // if the following conditions are met: 1630 // 1631 // (1) src and dst must not be null. 1632 // (2) src_pos must not be negative. 1633 // (3) dst_pos must not be negative. 1634 // (4) length must not be negative. 1635 // (5) src klass and dst klass should be the same and not NULL. 1636 // (6) src and dst should be arrays. 1637 // (7) src_pos + length must not exceed length of src. 1638 // (8) dst_pos + length must not exceed length of dst. 1639 // 1640 1641 const Register src = rax; // source array oop 1642 const Register src_pos = rsi; 1643 const Register dst = rdx; // destination array oop 1644 const Register dst_pos = rdi; 1645 const Register length = rcx; // transfer count 1646 1647 // if (src == NULL) return -1; 1648 __ movptr(src, SRC); // src oop 1649 __ testptr(src, src); 1650 __ jccb(Assembler::zero, L_failed_0); 1651 1652 // if (src_pos < 0) return -1; 1653 __ movl2ptr(src_pos, SRC_POS); // src_pos 1654 __ testl(src_pos, src_pos); 1655 __ jccb(Assembler::negative, L_failed_0); 1656 1657 // if (dst == NULL) return -1; 1658 __ movptr(dst, DST); // dst oop 1659 __ testptr(dst, dst); 1660 __ jccb(Assembler::zero, L_failed_0); 1661 1662 // if (dst_pos < 0) return -1; 1663 __ movl2ptr(dst_pos, DST_POS); // dst_pos 1664 __ testl(dst_pos, dst_pos); 1665 __ jccb(Assembler::negative, L_failed_0); 1666 1667 // if (length < 0) return -1; 1668 __ movl2ptr(length, LENGTH); // length 1669 __ testl(length, length); 1670 __ jccb(Assembler::negative, L_failed_0); 1671 1672 // if (src->klass() == NULL) return -1; 1673 Address src_klass_addr(src, oopDesc::klass_offset_in_bytes()); 1674 Address dst_klass_addr(dst, oopDesc::klass_offset_in_bytes()); 1675 const Register rcx_src_klass = rcx; // array klass 1676 __ movptr(rcx_src_klass, Address(src, oopDesc::klass_offset_in_bytes())); 1677 1678 #ifdef ASSERT 1679 // assert(src->klass() != NULL); 1680 BLOCK_COMMENT("assert klasses not null"); 1681 { Label L1, L2; 1682 __ testptr(rcx_src_klass, rcx_src_klass); 1683 __ jccb(Assembler::notZero, L2); // it is broken if klass is NULL 1684 __ bind(L1); 1685 __ stop("broken null klass"); 1686 __ bind(L2); 1687 __ cmpptr(dst_klass_addr, (int32_t)NULL_WORD); 1688 __ jccb(Assembler::equal, L1); // this would be broken also 1689 BLOCK_COMMENT("assert done"); 1690 } 1691 #endif //ASSERT 1692 1693 // Load layout helper (32-bits) 1694 // 1695 // |array_tag| | header_size | element_type | |log2_element_size| 1696 // 32 30 24 16 8 2 0 1697 // 1698 // array_tag: typeArray = 0x3, objArray = 0x2, non-array = 0x0 1699 // 1700 1701 int lh_offset = in_bytes(Klass::layout_helper_offset()); 1702 Address src_klass_lh_addr(rcx_src_klass, lh_offset); 1703 1704 // Handle objArrays completely differently... 1705 jint objArray_lh = Klass::array_layout_helper(T_OBJECT); 1706 __ cmpl(src_klass_lh_addr, objArray_lh); 1707 __ jcc(Assembler::equal, L_objArray); 1708 1709 // if (src->klass() != dst->klass()) return -1; 1710 __ cmpptr(rcx_src_klass, dst_klass_addr); 1711 __ jccb(Assembler::notEqual, L_failed_0); 1712 1713 const Register rcx_lh = rcx; // layout helper 1714 assert(rcx_lh == rcx_src_klass, "known alias"); 1715 __ movl(rcx_lh, src_klass_lh_addr); 1716 1717 // if (!src->is_Array()) return -1; 1718 __ cmpl(rcx_lh, Klass::_lh_neutral_value); 1719 __ jcc(Assembler::greaterEqual, L_failed_0); // signed cmp 1720 1721 // At this point, it is known to be a typeArray (array_tag 0x3). 1722 #ifdef ASSERT 1723 { Label L; 1724 __ cmpl(rcx_lh, (Klass::_lh_array_tag_type_value << Klass::_lh_array_tag_shift)); 1725 __ jcc(Assembler::greaterEqual, L); // signed cmp 1726 __ stop("must be a primitive array"); 1727 __ bind(L); 1728 } 1729 #endif 1730 1731 assert_different_registers(src, src_pos, dst, dst_pos, rcx_lh); 1732 arraycopy_range_checks(src, src_pos, dst, dst_pos, LENGTH, L_failed); 1733 1734 // TypeArrayKlass 1735 // 1736 // src_addr = (src + array_header_in_bytes()) + (src_pos << log2elemsize); 1737 // dst_addr = (dst + array_header_in_bytes()) + (dst_pos << log2elemsize); 1738 // 1739 const Register rsi_offset = rsi; // array offset 1740 const Register src_array = src; // src array offset 1741 const Register dst_array = dst; // dst array offset 1742 const Register rdi_elsize = rdi; // log2 element size 1743 1744 __ mov(rsi_offset, rcx_lh); 1745 __ shrptr(rsi_offset, Klass::_lh_header_size_shift); 1746 __ andptr(rsi_offset, Klass::_lh_header_size_mask); // array_offset 1747 __ addptr(src_array, rsi_offset); // src array offset 1748 __ addptr(dst_array, rsi_offset); // dst array offset 1749 __ andptr(rcx_lh, Klass::_lh_log2_element_size_mask); // log2 elsize 1750 1751 // next registers should be set before the jump to corresponding stub 1752 const Register from = src; // source array address 1753 const Register to = dst; // destination array address 1754 const Register count = rcx; // elements count 1755 // some of them should be duplicated on stack 1756 #define FROM Address(rsp, 12+ 4) 1757 #define TO Address(rsp, 12+ 8) // Not used now 1758 #define COUNT Address(rsp, 12+12) // Only for oop arraycopy 1759 1760 BLOCK_COMMENT("scale indexes to element size"); 1761 __ movl2ptr(rsi, SRC_POS); // src_pos 1762 __ shlptr(rsi); // src_pos << rcx (log2 elsize) 1763 assert(src_array == from, ""); 1764 __ addptr(from, rsi); // from = src_array + SRC_POS << log2 elsize 1765 __ movl2ptr(rdi, DST_POS); // dst_pos 1766 __ shlptr(rdi); // dst_pos << rcx (log2 elsize) 1767 assert(dst_array == to, ""); 1768 __ addptr(to, rdi); // to = dst_array + DST_POS << log2 elsize 1769 __ movptr(FROM, from); // src_addr 1770 __ mov(rdi_elsize, rcx_lh); // log2 elsize 1771 __ movl2ptr(count, LENGTH); // elements count 1772 1773 BLOCK_COMMENT("choose copy loop based on element size"); 1774 __ cmpl(rdi_elsize, 0); 1775 1776 __ jump_cc(Assembler::equal, RuntimeAddress(entry_jbyte_arraycopy)); 1777 __ cmpl(rdi_elsize, LogBytesPerShort); 1778 __ jump_cc(Assembler::equal, RuntimeAddress(entry_jshort_arraycopy)); 1779 __ cmpl(rdi_elsize, LogBytesPerInt); 1780 __ jump_cc(Assembler::equal, RuntimeAddress(entry_jint_arraycopy)); 1781 #ifdef ASSERT 1782 __ cmpl(rdi_elsize, LogBytesPerLong); 1783 __ jccb(Assembler::notEqual, L_failed); 1784 #endif 1785 __ pop(rdi); // Do pops here since jlong_arraycopy stub does not do it. 1786 __ pop(rsi); 1787 __ jump(RuntimeAddress(entry_jlong_arraycopy)); 1788 1789 __ BIND(L_failed); 1790 __ xorptr(rax, rax); 1791 __ notptr(rax); // return -1 1792 __ pop(rdi); 1793 __ pop(rsi); 1794 __ leave(); // required for proper stackwalking of RuntimeStub frame 1795 __ ret(0); 1796 1797 // ObjArrayKlass 1798 __ BIND(L_objArray); 1799 // live at this point: rcx_src_klass, src[_pos], dst[_pos] 1800 1801 Label L_plain_copy, L_checkcast_copy; 1802 // test array classes for subtyping 1803 __ cmpptr(rcx_src_klass, dst_klass_addr); // usual case is exact equality 1804 __ jccb(Assembler::notEqual, L_checkcast_copy); 1805 1806 // Identically typed arrays can be copied without element-wise checks. 1807 assert_different_registers(src, src_pos, dst, dst_pos, rcx_src_klass); 1808 arraycopy_range_checks(src, src_pos, dst, dst_pos, LENGTH, L_failed); 1809 1810 __ BIND(L_plain_copy); 1811 __ movl2ptr(count, LENGTH); // elements count 1812 __ movl2ptr(src_pos, SRC_POS); // reload src_pos 1813 __ lea(from, Address(src, src_pos, Address::times_ptr, 1814 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // src_addr 1815 __ movl2ptr(dst_pos, DST_POS); // reload dst_pos 1816 __ lea(to, Address(dst, dst_pos, Address::times_ptr, 1817 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // dst_addr 1818 __ movptr(FROM, from); // src_addr 1819 __ movptr(TO, to); // dst_addr 1820 __ movl(COUNT, count); // count 1821 __ jump(RuntimeAddress(entry_oop_arraycopy)); 1822 1823 __ BIND(L_checkcast_copy); 1824 // live at this point: rcx_src_klass, dst[_pos], src[_pos] 1825 { 1826 // Handy offsets: 1827 int ek_offset = in_bytes(ObjArrayKlass::element_klass_offset()); 1828 int sco_offset = in_bytes(Klass::super_check_offset_offset()); 1829 1830 Register rsi_dst_klass = rsi; 1831 Register rdi_temp = rdi; 1832 assert(rsi_dst_klass == src_pos, "expected alias w/ src_pos"); 1833 assert(rdi_temp == dst_pos, "expected alias w/ dst_pos"); 1834 Address dst_klass_lh_addr(rsi_dst_klass, lh_offset); 1835 1836 // Before looking at dst.length, make sure dst is also an objArray. 1837 __ movptr(rsi_dst_klass, dst_klass_addr); 1838 __ cmpl(dst_klass_lh_addr, objArray_lh); 1839 __ jccb(Assembler::notEqual, L_failed); 1840 1841 // It is safe to examine both src.length and dst.length. 1842 __ movl2ptr(src_pos, SRC_POS); // reload rsi 1843 arraycopy_range_checks(src, src_pos, dst, dst_pos, LENGTH, L_failed); 1844 // (Now src_pos and dst_pos are killed, but not src and dst.) 1845 1846 // We'll need this temp (don't forget to pop it after the type check). 1847 __ push(rbx); 1848 Register rbx_src_klass = rbx; 1849 1850 __ mov(rbx_src_klass, rcx_src_klass); // spill away from rcx 1851 __ movptr(rsi_dst_klass, dst_klass_addr); 1852 Address super_check_offset_addr(rsi_dst_klass, sco_offset); 1853 Label L_fail_array_check; 1854 generate_type_check(rbx_src_klass, 1855 super_check_offset_addr, dst_klass_addr, 1856 rdi_temp, NULL, &L_fail_array_check); 1857 // (On fall-through, we have passed the array type check.) 1858 __ pop(rbx); 1859 __ jmp(L_plain_copy); 1860 1861 __ BIND(L_fail_array_check); 1862 // Reshuffle arguments so we can call checkcast_arraycopy: 1863 1864 // match initial saves for checkcast_arraycopy 1865 // push(rsi); // already done; see above 1866 // push(rdi); // already done; see above 1867 // push(rbx); // already done; see above 1868 1869 // Marshal outgoing arguments now, freeing registers. 1870 Address from_arg(rsp, 16+ 4); // from 1871 Address to_arg(rsp, 16+ 8); // to 1872 Address length_arg(rsp, 16+12); // elements count 1873 Address ckoff_arg(rsp, 16+16); // super_check_offset 1874 Address ckval_arg(rsp, 16+20); // super_klass 1875 1876 Address SRC_POS_arg(rsp, 16+ 8); 1877 Address DST_POS_arg(rsp, 16+16); 1878 Address LENGTH_arg(rsp, 16+20); 1879 // push rbx, changed the incoming offsets (why not just use rbp,??) 1880 // assert(SRC_POS_arg.disp() == SRC_POS.disp() + 4, ""); 1881 1882 __ movptr(rbx, Address(rsi_dst_klass, ek_offset)); 1883 __ movl2ptr(length, LENGTH_arg); // reload elements count 1884 __ movl2ptr(src_pos, SRC_POS_arg); // reload src_pos 1885 __ movl2ptr(dst_pos, DST_POS_arg); // reload dst_pos 1886 1887 __ movptr(ckval_arg, rbx); // destination element type 1888 __ movl(rbx, Address(rbx, sco_offset)); 1889 __ movl(ckoff_arg, rbx); // corresponding class check offset 1890 1891 __ movl(length_arg, length); // outgoing length argument 1892 1893 __ lea(from, Address(src, src_pos, Address::times_ptr, 1894 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); 1895 __ movptr(from_arg, from); 1896 1897 __ lea(to, Address(dst, dst_pos, Address::times_ptr, 1898 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); 1899 __ movptr(to_arg, to); 1900 __ jump(RuntimeAddress(entry_checkcast_arraycopy)); 1901 } 1902 1903 return start; 1904 } 1905 1906 void generate_arraycopy_stubs() { 1907 address entry; 1908 address entry_jbyte_arraycopy; 1909 address entry_jshort_arraycopy; 1910 address entry_jint_arraycopy; 1911 address entry_oop_arraycopy; 1912 address entry_jlong_arraycopy; 1913 address entry_checkcast_arraycopy; 1914 1915 StubRoutines::_arrayof_jbyte_disjoint_arraycopy = 1916 generate_disjoint_copy(T_BYTE, true, Address::times_1, &entry, 1917 "arrayof_jbyte_disjoint_arraycopy"); 1918 StubRoutines::_arrayof_jbyte_arraycopy = 1919 generate_conjoint_copy(T_BYTE, true, Address::times_1, entry, 1920 NULL, "arrayof_jbyte_arraycopy"); 1921 StubRoutines::_jbyte_disjoint_arraycopy = 1922 generate_disjoint_copy(T_BYTE, false, Address::times_1, &entry, 1923 "jbyte_disjoint_arraycopy"); 1924 StubRoutines::_jbyte_arraycopy = 1925 generate_conjoint_copy(T_BYTE, false, Address::times_1, entry, 1926 &entry_jbyte_arraycopy, "jbyte_arraycopy"); 1927 1928 StubRoutines::_arrayof_jshort_disjoint_arraycopy = 1929 generate_disjoint_copy(T_SHORT, true, Address::times_2, &entry, 1930 "arrayof_jshort_disjoint_arraycopy"); 1931 StubRoutines::_arrayof_jshort_arraycopy = 1932 generate_conjoint_copy(T_SHORT, true, Address::times_2, entry, 1933 NULL, "arrayof_jshort_arraycopy"); 1934 StubRoutines::_jshort_disjoint_arraycopy = 1935 generate_disjoint_copy(T_SHORT, false, Address::times_2, &entry, 1936 "jshort_disjoint_arraycopy"); 1937 StubRoutines::_jshort_arraycopy = 1938 generate_conjoint_copy(T_SHORT, false, Address::times_2, entry, 1939 &entry_jshort_arraycopy, "jshort_arraycopy"); 1940 1941 // Next arrays are always aligned on 4 bytes at least. 1942 StubRoutines::_jint_disjoint_arraycopy = 1943 generate_disjoint_copy(T_INT, true, Address::times_4, &entry, 1944 "jint_disjoint_arraycopy"); 1945 StubRoutines::_jint_arraycopy = 1946 generate_conjoint_copy(T_INT, true, Address::times_4, entry, 1947 &entry_jint_arraycopy, "jint_arraycopy"); 1948 1949 StubRoutines::_oop_disjoint_arraycopy = 1950 generate_disjoint_copy(T_OBJECT, true, Address::times_ptr, &entry, 1951 "oop_disjoint_arraycopy"); 1952 StubRoutines::_oop_arraycopy = 1953 generate_conjoint_copy(T_OBJECT, true, Address::times_ptr, entry, 1954 &entry_oop_arraycopy, "oop_arraycopy"); 1955 1956 StubRoutines::_oop_disjoint_arraycopy_uninit = 1957 generate_disjoint_copy(T_OBJECT, true, Address::times_ptr, &entry, 1958 "oop_disjoint_arraycopy_uninit", 1959 /*dest_uninitialized*/true); 1960 StubRoutines::_oop_arraycopy_uninit = 1961 generate_conjoint_copy(T_OBJECT, true, Address::times_ptr, entry, 1962 NULL, "oop_arraycopy_uninit", 1963 /*dest_uninitialized*/true); 1964 1965 StubRoutines::_jlong_disjoint_arraycopy = 1966 generate_disjoint_long_copy(&entry, "jlong_disjoint_arraycopy"); 1967 StubRoutines::_jlong_arraycopy = 1968 generate_conjoint_long_copy(entry, &entry_jlong_arraycopy, 1969 "jlong_arraycopy"); 1970 1971 StubRoutines::_jbyte_fill = generate_fill(T_BYTE, false, "jbyte_fill"); 1972 StubRoutines::_jshort_fill = generate_fill(T_SHORT, false, "jshort_fill"); 1973 StubRoutines::_jint_fill = generate_fill(T_INT, false, "jint_fill"); 1974 StubRoutines::_arrayof_jbyte_fill = generate_fill(T_BYTE, true, "arrayof_jbyte_fill"); 1975 StubRoutines::_arrayof_jshort_fill = generate_fill(T_SHORT, true, "arrayof_jshort_fill"); 1976 StubRoutines::_arrayof_jint_fill = generate_fill(T_INT, true, "arrayof_jint_fill"); 1977 1978 StubRoutines::_arrayof_jint_disjoint_arraycopy = StubRoutines::_jint_disjoint_arraycopy; 1979 StubRoutines::_arrayof_oop_disjoint_arraycopy = StubRoutines::_oop_disjoint_arraycopy; 1980 StubRoutines::_arrayof_oop_disjoint_arraycopy_uninit = StubRoutines::_oop_disjoint_arraycopy_uninit; 1981 StubRoutines::_arrayof_jlong_disjoint_arraycopy = StubRoutines::_jlong_disjoint_arraycopy; 1982 1983 StubRoutines::_arrayof_jint_arraycopy = StubRoutines::_jint_arraycopy; 1984 StubRoutines::_arrayof_oop_arraycopy = StubRoutines::_oop_arraycopy; 1985 StubRoutines::_arrayof_oop_arraycopy_uninit = StubRoutines::_oop_arraycopy_uninit; 1986 StubRoutines::_arrayof_jlong_arraycopy = StubRoutines::_jlong_arraycopy; 1987 1988 StubRoutines::_checkcast_arraycopy = 1989 generate_checkcast_copy("checkcast_arraycopy", &entry_checkcast_arraycopy); 1990 StubRoutines::_checkcast_arraycopy_uninit = 1991 generate_checkcast_copy("checkcast_arraycopy_uninit", NULL, /*dest_uninitialized*/true); 1992 1993 StubRoutines::_unsafe_arraycopy = 1994 generate_unsafe_copy("unsafe_arraycopy", 1995 entry_jbyte_arraycopy, 1996 entry_jshort_arraycopy, 1997 entry_jint_arraycopy, 1998 entry_jlong_arraycopy); 1999 2000 StubRoutines::_generic_arraycopy = 2001 generate_generic_copy("generic_arraycopy", 2002 entry_jbyte_arraycopy, 2003 entry_jshort_arraycopy, 2004 entry_jint_arraycopy, 2005 entry_oop_arraycopy, 2006 entry_jlong_arraycopy, 2007 entry_checkcast_arraycopy); 2008 } 2009 2010 // AES intrinsic stubs 2011 enum {AESBlockSize = 16}; 2012 2013 address generate_key_shuffle_mask() { 2014 __ align(16); 2015 StubCodeMark mark(this, "StubRoutines", "key_shuffle_mask"); 2016 address start = __ pc(); 2017 __ emit_data(0x00010203, relocInfo::none, 0 ); 2018 __ emit_data(0x04050607, relocInfo::none, 0 ); 2019 __ emit_data(0x08090a0b, relocInfo::none, 0 ); 2020 __ emit_data(0x0c0d0e0f, relocInfo::none, 0 ); 2021 return start; 2022 } 2023 2024 address generate_counter_shuffle_mask() { 2025 __ align(16); 2026 StubCodeMark mark(this, "StubRoutines", "counter_shuffle_mask"); 2027 address start = __ pc(); 2028 __ emit_data(0x0c0d0e0f, relocInfo::none, 0); 2029 __ emit_data(0x08090a0b, relocInfo::none, 0); 2030 __ emit_data(0x04050607, relocInfo::none, 0); 2031 __ emit_data(0x00010203, relocInfo::none, 0); 2032 return start; 2033 } 2034 2035 // Utility routine for loading a 128-bit key word in little endian format 2036 // can optionally specify that the shuffle mask is already in an xmmregister 2037 void load_key(XMMRegister xmmdst, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) { 2038 __ movdqu(xmmdst, Address(key, offset)); 2039 if (xmm_shuf_mask != NULL) { 2040 __ pshufb(xmmdst, xmm_shuf_mask); 2041 } else { 2042 __ pshufb(xmmdst, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); 2043 } 2044 } 2045 2046 // aesenc using specified key+offset 2047 // can optionally specify that the shuffle mask is already in an xmmregister 2048 void aes_enc_key(XMMRegister xmmdst, XMMRegister xmmtmp, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) { 2049 load_key(xmmtmp, key, offset, xmm_shuf_mask); 2050 __ aesenc(xmmdst, xmmtmp); 2051 } 2052 2053 // aesdec using specified key+offset 2054 // can optionally specify that the shuffle mask is already in an xmmregister 2055 void aes_dec_key(XMMRegister xmmdst, XMMRegister xmmtmp, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) { 2056 load_key(xmmtmp, key, offset, xmm_shuf_mask); 2057 __ aesdec(xmmdst, xmmtmp); 2058 } 2059 2060 // Utility routine for increase 128bit counter (iv in CTR mode) 2061 // XMM_128bit, D3, D2, D1, D0 2062 void inc_counter(Register reg, XMMRegister xmmdst, int inc_delta, Label& next_block) { 2063 __ pextrd(reg, xmmdst, 0x0); 2064 __ addl(reg, inc_delta); 2065 __ pinsrd(xmmdst, reg, 0x0); 2066 __ jcc(Assembler::carryClear, next_block); // jump if no carry 2067 2068 __ pextrd(reg, xmmdst, 0x01); // Carry-> D1 2069 __ addl(reg, 0x01); 2070 __ pinsrd(xmmdst, reg, 0x01); 2071 __ jcc(Assembler::carryClear, next_block); // jump if no carry 2072 2073 __ pextrd(reg, xmmdst, 0x02); // Carry-> D2 2074 __ addl(reg, 0x01); 2075 __ pinsrd(xmmdst, reg, 0x02); 2076 __ jcc(Assembler::carryClear, next_block); // jump if no carry 2077 2078 __ pextrd(reg, xmmdst, 0x03); // Carry -> D3 2079 __ addl(reg, 0x01); 2080 __ pinsrd(xmmdst, reg, 0x03); 2081 2082 __ BIND(next_block); // next instruction 2083 } 2084 2085 2086 // Arguments: 2087 // 2088 // Inputs: 2089 // c_rarg0 - source byte array address 2090 // c_rarg1 - destination byte array address 2091 // c_rarg2 - K (key) in little endian int array 2092 // 2093 address generate_aescrypt_encryptBlock() { 2094 assert(UseAES, "need AES instructions and misaligned SSE support"); 2095 __ align(CodeEntryAlignment); 2096 StubCodeMark mark(this, "StubRoutines", "aescrypt_encryptBlock"); 2097 Label L_doLast; 2098 address start = __ pc(); 2099 2100 const Register from = rdx; // source array address 2101 const Register to = rdx; // destination array address 2102 const Register key = rcx; // key array address 2103 const Register keylen = rax; 2104 const Address from_param(rbp, 8+0); 2105 const Address to_param (rbp, 8+4); 2106 const Address key_param (rbp, 8+8); 2107 2108 const XMMRegister xmm_result = xmm0; 2109 const XMMRegister xmm_key_shuf_mask = xmm1; 2110 const XMMRegister xmm_temp1 = xmm2; 2111 const XMMRegister xmm_temp2 = xmm3; 2112 const XMMRegister xmm_temp3 = xmm4; 2113 const XMMRegister xmm_temp4 = xmm5; 2114 2115 __ enter(); // required for proper stackwalking of RuntimeStub frame 2116 2117 // For EVEX with VL and BW, provide a standard mask, VL = 128 will guide the merge 2118 // context for the registers used, where all instructions below are using 128-bit mode 2119 // On EVEX without VL and BW, these instructions will all be AVX. 2120 if (VM_Version::supports_avx512vlbw()) { 2121 __ movl(rdx, 0xffff); 2122 __ kmovdl(k1, rdx); 2123 } 2124 2125 __ movptr(from, from_param); 2126 __ movptr(key, key_param); 2127 2128 // keylen could be only {11, 13, 15} * 4 = {44, 52, 60} 2129 __ movl(keylen, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); 2130 2131 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); 2132 __ movdqu(xmm_result, Address(from, 0)); // get 16 bytes of input 2133 __ movptr(to, to_param); 2134 2135 // For encryption, the java expanded key ordering is just what we need 2136 2137 load_key(xmm_temp1, key, 0x00, xmm_key_shuf_mask); 2138 __ pxor(xmm_result, xmm_temp1); 2139 2140 load_key(xmm_temp1, key, 0x10, xmm_key_shuf_mask); 2141 load_key(xmm_temp2, key, 0x20, xmm_key_shuf_mask); 2142 load_key(xmm_temp3, key, 0x30, xmm_key_shuf_mask); 2143 load_key(xmm_temp4, key, 0x40, xmm_key_shuf_mask); 2144 2145 __ aesenc(xmm_result, xmm_temp1); 2146 __ aesenc(xmm_result, xmm_temp2); 2147 __ aesenc(xmm_result, xmm_temp3); 2148 __ aesenc(xmm_result, xmm_temp4); 2149 2150 load_key(xmm_temp1, key, 0x50, xmm_key_shuf_mask); 2151 load_key(xmm_temp2, key, 0x60, xmm_key_shuf_mask); 2152 load_key(xmm_temp3, key, 0x70, xmm_key_shuf_mask); 2153 load_key(xmm_temp4, key, 0x80, xmm_key_shuf_mask); 2154 2155 __ aesenc(xmm_result, xmm_temp1); 2156 __ aesenc(xmm_result, xmm_temp2); 2157 __ aesenc(xmm_result, xmm_temp3); 2158 __ aesenc(xmm_result, xmm_temp4); 2159 2160 load_key(xmm_temp1, key, 0x90, xmm_key_shuf_mask); 2161 load_key(xmm_temp2, key, 0xa0, xmm_key_shuf_mask); 2162 2163 __ cmpl(keylen, 44); 2164 __ jccb(Assembler::equal, L_doLast); 2165 2166 __ aesenc(xmm_result, xmm_temp1); 2167 __ aesenc(xmm_result, xmm_temp2); 2168 2169 load_key(xmm_temp1, key, 0xb0, xmm_key_shuf_mask); 2170 load_key(xmm_temp2, key, 0xc0, xmm_key_shuf_mask); 2171 2172 __ cmpl(keylen, 52); 2173 __ jccb(Assembler::equal, L_doLast); 2174 2175 __ aesenc(xmm_result, xmm_temp1); 2176 __ aesenc(xmm_result, xmm_temp2); 2177 2178 load_key(xmm_temp1, key, 0xd0, xmm_key_shuf_mask); 2179 load_key(xmm_temp2, key, 0xe0, xmm_key_shuf_mask); 2180 2181 __ BIND(L_doLast); 2182 __ aesenc(xmm_result, xmm_temp1); 2183 __ aesenclast(xmm_result, xmm_temp2); 2184 __ movdqu(Address(to, 0), xmm_result); // store the result 2185 __ xorptr(rax, rax); // return 0 2186 __ leave(); // required for proper stackwalking of RuntimeStub frame 2187 __ ret(0); 2188 2189 return start; 2190 } 2191 2192 2193 // Arguments: 2194 // 2195 // Inputs: 2196 // c_rarg0 - source byte array address 2197 // c_rarg1 - destination byte array address 2198 // c_rarg2 - K (key) in little endian int array 2199 // 2200 address generate_aescrypt_decryptBlock() { 2201 assert(UseAES, "need AES instructions and misaligned SSE support"); 2202 __ align(CodeEntryAlignment); 2203 StubCodeMark mark(this, "StubRoutines", "aescrypt_decryptBlock"); 2204 Label L_doLast; 2205 address start = __ pc(); 2206 2207 const Register from = rdx; // source array address 2208 const Register to = rdx; // destination array address 2209 const Register key = rcx; // key array address 2210 const Register keylen = rax; 2211 const Address from_param(rbp, 8+0); 2212 const Address to_param (rbp, 8+4); 2213 const Address key_param (rbp, 8+8); 2214 2215 const XMMRegister xmm_result = xmm0; 2216 const XMMRegister xmm_key_shuf_mask = xmm1; 2217 const XMMRegister xmm_temp1 = xmm2; 2218 const XMMRegister xmm_temp2 = xmm3; 2219 const XMMRegister xmm_temp3 = xmm4; 2220 const XMMRegister xmm_temp4 = xmm5; 2221 2222 __ enter(); // required for proper stackwalking of RuntimeStub frame 2223 2224 // For EVEX with VL and BW, provide a standard mask, VL = 128 will guide the merge 2225 // context for the registers used, where all instructions below are using 128-bit mode 2226 // On EVEX without VL and BW, these instructions will all be AVX. 2227 if (VM_Version::supports_avx512vlbw()) { 2228 __ movl(rdx, 0xffff); 2229 __ kmovdl(k1, rdx); 2230 } 2231 2232 __ movptr(from, from_param); 2233 __ movptr(key, key_param); 2234 2235 // keylen could be only {11, 13, 15} * 4 = {44, 52, 60} 2236 __ movl(keylen, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); 2237 2238 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); 2239 __ movdqu(xmm_result, Address(from, 0)); 2240 __ movptr(to, to_param); 2241 2242 // for decryption java expanded key ordering is rotated one position from what we want 2243 // so we start from 0x10 here and hit 0x00 last 2244 // we don't know if the key is aligned, hence not using load-execute form 2245 load_key(xmm_temp1, key, 0x10, xmm_key_shuf_mask); 2246 load_key(xmm_temp2, key, 0x20, xmm_key_shuf_mask); 2247 load_key(xmm_temp3, key, 0x30, xmm_key_shuf_mask); 2248 load_key(xmm_temp4, key, 0x40, xmm_key_shuf_mask); 2249 2250 __ pxor (xmm_result, xmm_temp1); 2251 __ aesdec(xmm_result, xmm_temp2); 2252 __ aesdec(xmm_result, xmm_temp3); 2253 __ aesdec(xmm_result, xmm_temp4); 2254 2255 load_key(xmm_temp1, key, 0x50, xmm_key_shuf_mask); 2256 load_key(xmm_temp2, key, 0x60, xmm_key_shuf_mask); 2257 load_key(xmm_temp3, key, 0x70, xmm_key_shuf_mask); 2258 load_key(xmm_temp4, key, 0x80, xmm_key_shuf_mask); 2259 2260 __ aesdec(xmm_result, xmm_temp1); 2261 __ aesdec(xmm_result, xmm_temp2); 2262 __ aesdec(xmm_result, xmm_temp3); 2263 __ aesdec(xmm_result, xmm_temp4); 2264 2265 load_key(xmm_temp1, key, 0x90, xmm_key_shuf_mask); 2266 load_key(xmm_temp2, key, 0xa0, xmm_key_shuf_mask); 2267 load_key(xmm_temp3, key, 0x00, xmm_key_shuf_mask); 2268 2269 __ cmpl(keylen, 44); 2270 __ jccb(Assembler::equal, L_doLast); 2271 2272 __ aesdec(xmm_result, xmm_temp1); 2273 __ aesdec(xmm_result, xmm_temp2); 2274 2275 load_key(xmm_temp1, key, 0xb0, xmm_key_shuf_mask); 2276 load_key(xmm_temp2, key, 0xc0, xmm_key_shuf_mask); 2277 2278 __ cmpl(keylen, 52); 2279 __ jccb(Assembler::equal, L_doLast); 2280 2281 __ aesdec(xmm_result, xmm_temp1); 2282 __ aesdec(xmm_result, xmm_temp2); 2283 2284 load_key(xmm_temp1, key, 0xd0, xmm_key_shuf_mask); 2285 load_key(xmm_temp2, key, 0xe0, xmm_key_shuf_mask); 2286 2287 __ BIND(L_doLast); 2288 __ aesdec(xmm_result, xmm_temp1); 2289 __ aesdec(xmm_result, xmm_temp2); 2290 2291 // for decryption the aesdeclast operation is always on key+0x00 2292 __ aesdeclast(xmm_result, xmm_temp3); 2293 __ movdqu(Address(to, 0), xmm_result); // store the result 2294 __ xorptr(rax, rax); // return 0 2295 __ leave(); // required for proper stackwalking of RuntimeStub frame 2296 __ ret(0); 2297 2298 return start; 2299 } 2300 2301 void handleSOERegisters(bool saving) { 2302 const int saveFrameSizeInBytes = 4 * wordSize; 2303 const Address saved_rbx (rbp, -3 * wordSize); 2304 const Address saved_rsi (rbp, -2 * wordSize); 2305 const Address saved_rdi (rbp, -1 * wordSize); 2306 2307 if (saving) { 2308 __ subptr(rsp, saveFrameSizeInBytes); 2309 __ movptr(saved_rsi, rsi); 2310 __ movptr(saved_rdi, rdi); 2311 __ movptr(saved_rbx, rbx); 2312 } else { 2313 // restoring 2314 __ movptr(rsi, saved_rsi); 2315 __ movptr(rdi, saved_rdi); 2316 __ movptr(rbx, saved_rbx); 2317 } 2318 } 2319 2320 // Arguments: 2321 // 2322 // Inputs: 2323 // c_rarg0 - source byte array address 2324 // c_rarg1 - destination byte array address 2325 // c_rarg2 - K (key) in little endian int array 2326 // c_rarg3 - r vector byte array address 2327 // c_rarg4 - input length 2328 // 2329 // Output: 2330 // rax - input length 2331 // 2332 address generate_cipherBlockChaining_encryptAESCrypt() { 2333 assert(UseAES, "need AES instructions and misaligned SSE support"); 2334 __ align(CodeEntryAlignment); 2335 StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_encryptAESCrypt"); 2336 address start = __ pc(); 2337 2338 Label L_exit, L_key_192_256, L_key_256, L_loopTop_128, L_loopTop_192, L_loopTop_256; 2339 const Register from = rsi; // source array address 2340 const Register to = rdx; // destination array address 2341 const Register key = rcx; // key array address 2342 const Register rvec = rdi; // r byte array initialized from initvector array address 2343 // and left with the results of the last encryption block 2344 const Register len_reg = rbx; // src len (must be multiple of blocksize 16) 2345 const Register pos = rax; 2346 2347 // xmm register assignments for the loops below 2348 const XMMRegister xmm_result = xmm0; 2349 const XMMRegister xmm_temp = xmm1; 2350 // first 6 keys preloaded into xmm2-xmm7 2351 const int XMM_REG_NUM_KEY_FIRST = 2; 2352 const int XMM_REG_NUM_KEY_LAST = 7; 2353 const XMMRegister xmm_key0 = as_XMMRegister(XMM_REG_NUM_KEY_FIRST); 2354 2355 __ enter(); // required for proper stackwalking of RuntimeStub frame 2356 handleSOERegisters(true /*saving*/); 2357 2358 // For EVEX with VL and BW, provide a standard mask, VL = 128 will guide the merge 2359 // context for the registers used, where all instructions below are using 128-bit mode 2360 // On EVEX without VL and BW, these instructions will all be AVX. 2361 if (VM_Version::supports_avx512vlbw()) { 2362 __ movl(rdx, 0xffff); 2363 __ kmovdl(k1, rdx); 2364 } 2365 2366 // load registers from incoming parameters 2367 const Address from_param(rbp, 8+0); 2368 const Address to_param (rbp, 8+4); 2369 const Address key_param (rbp, 8+8); 2370 const Address rvec_param (rbp, 8+12); 2371 const Address len_param (rbp, 8+16); 2372 __ movptr(from , from_param); 2373 __ movptr(to , to_param); 2374 __ movptr(key , key_param); 2375 __ movptr(rvec , rvec_param); 2376 __ movptr(len_reg , len_param); 2377 2378 const XMMRegister xmm_key_shuf_mask = xmm_temp; // used temporarily to swap key bytes up front 2379 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); 2380 // load up xmm regs 2 thru 7 with keys 0-5 2381 for (int rnum = XMM_REG_NUM_KEY_FIRST, offset = 0x00; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { 2382 load_key(as_XMMRegister(rnum), key, offset, xmm_key_shuf_mask); 2383 offset += 0x10; 2384 } 2385 2386 __ movdqu(xmm_result, Address(rvec, 0x00)); // initialize xmm_result with r vec 2387 2388 // now split to different paths depending on the keylen (len in ints of AESCrypt.KLE array (52=192, or 60=256)) 2389 __ movl(rax, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); 2390 __ cmpl(rax, 44); 2391 __ jcc(Assembler::notEqual, L_key_192_256); 2392 2393 // 128 bit code follows here 2394 __ movl(pos, 0); 2395 __ align(OptoLoopAlignment); 2396 __ BIND(L_loopTop_128); 2397 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input 2398 __ pxor (xmm_result, xmm_temp); // xor with the current r vector 2399 2400 __ pxor (xmm_result, xmm_key0); // do the aes rounds 2401 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { 2402 __ aesenc(xmm_result, as_XMMRegister(rnum)); 2403 } 2404 for (int key_offset = 0x60; key_offset <= 0x90; key_offset += 0x10) { 2405 aes_enc_key(xmm_result, xmm_temp, key, key_offset); 2406 } 2407 load_key(xmm_temp, key, 0xa0); 2408 __ aesenclast(xmm_result, xmm_temp); 2409 2410 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output 2411 // no need to store r to memory until we exit 2412 __ addptr(pos, AESBlockSize); 2413 __ subptr(len_reg, AESBlockSize); 2414 __ jcc(Assembler::notEqual, L_loopTop_128); 2415 2416 __ BIND(L_exit); 2417 __ movdqu(Address(rvec, 0), xmm_result); // final value of r stored in rvec of CipherBlockChaining object 2418 2419 handleSOERegisters(false /*restoring*/); 2420 __ movptr(rax, len_param); // return length 2421 __ leave(); // required for proper stackwalking of RuntimeStub frame 2422 __ ret(0); 2423 2424 __ BIND(L_key_192_256); 2425 // here rax = len in ints of AESCrypt.KLE array (52=192, or 60=256) 2426 __ cmpl(rax, 52); 2427 __ jcc(Assembler::notEqual, L_key_256); 2428 2429 // 192-bit code follows here (could be changed to use more xmm registers) 2430 __ movl(pos, 0); 2431 __ align(OptoLoopAlignment); 2432 __ BIND(L_loopTop_192); 2433 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input 2434 __ pxor (xmm_result, xmm_temp); // xor with the current r vector 2435 2436 __ pxor (xmm_result, xmm_key0); // do the aes rounds 2437 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { 2438 __ aesenc(xmm_result, as_XMMRegister(rnum)); 2439 } 2440 for (int key_offset = 0x60; key_offset <= 0xb0; key_offset += 0x10) { 2441 aes_enc_key(xmm_result, xmm_temp, key, key_offset); 2442 } 2443 load_key(xmm_temp, key, 0xc0); 2444 __ aesenclast(xmm_result, xmm_temp); 2445 2446 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output 2447 // no need to store r to memory until we exit 2448 __ addptr(pos, AESBlockSize); 2449 __ subptr(len_reg, AESBlockSize); 2450 __ jcc(Assembler::notEqual, L_loopTop_192); 2451 __ jmp(L_exit); 2452 2453 __ BIND(L_key_256); 2454 // 256-bit code follows here (could be changed to use more xmm registers) 2455 __ movl(pos, 0); 2456 __ align(OptoLoopAlignment); 2457 __ BIND(L_loopTop_256); 2458 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input 2459 __ pxor (xmm_result, xmm_temp); // xor with the current r vector 2460 2461 __ pxor (xmm_result, xmm_key0); // do the aes rounds 2462 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { 2463 __ aesenc(xmm_result, as_XMMRegister(rnum)); 2464 } 2465 for (int key_offset = 0x60; key_offset <= 0xd0; key_offset += 0x10) { 2466 aes_enc_key(xmm_result, xmm_temp, key, key_offset); 2467 } 2468 load_key(xmm_temp, key, 0xe0); 2469 __ aesenclast(xmm_result, xmm_temp); 2470 2471 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output 2472 // no need to store r to memory until we exit 2473 __ addptr(pos, AESBlockSize); 2474 __ subptr(len_reg, AESBlockSize); 2475 __ jcc(Assembler::notEqual, L_loopTop_256); 2476 __ jmp(L_exit); 2477 2478 return start; 2479 } 2480 2481 2482 // CBC AES Decryption. 2483 // In 32-bit stub, because of lack of registers we do not try to parallelize 4 blocks at a time. 2484 // 2485 // Arguments: 2486 // 2487 // Inputs: 2488 // c_rarg0 - source byte array address 2489 // c_rarg1 - destination byte array address 2490 // c_rarg2 - K (key) in little endian int array 2491 // c_rarg3 - r vector byte array address 2492 // c_rarg4 - input length 2493 // 2494 // Output: 2495 // rax - input length 2496 // 2497 2498 address generate_cipherBlockChaining_decryptAESCrypt_Parallel() { 2499 assert(UseAES, "need AES instructions and misaligned SSE support"); 2500 __ align(CodeEntryAlignment); 2501 StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_decryptAESCrypt"); 2502 address start = __ pc(); 2503 2504 const Register from = rsi; // source array address 2505 const Register to = rdx; // destination array address 2506 const Register key = rcx; // key array address 2507 const Register rvec = rdi; // r byte array initialized from initvector array address 2508 // and left with the results of the last encryption block 2509 const Register len_reg = rbx; // src len (must be multiple of blocksize 16) 2510 const Register pos = rax; 2511 2512 const int PARALLEL_FACTOR = 4; 2513 const int ROUNDS[3] = { 10, 12, 14 }; //aes rounds for key128, key192, key256 2514 2515 Label L_exit; 2516 Label L_singleBlock_loopTop[3]; //128, 192, 256 2517 Label L_multiBlock_loopTop[3]; //128, 192, 256 2518 2519 const XMMRegister xmm_prev_block_cipher = xmm0; // holds cipher of previous block 2520 const XMMRegister xmm_key_shuf_mask = xmm1; 2521 2522 const XMMRegister xmm_key_tmp0 = xmm2; 2523 const XMMRegister xmm_key_tmp1 = xmm3; 2524 2525 // registers holding the six results in the parallelized loop 2526 const XMMRegister xmm_result0 = xmm4; 2527 const XMMRegister xmm_result1 = xmm5; 2528 const XMMRegister xmm_result2 = xmm6; 2529 const XMMRegister xmm_result3 = xmm7; 2530 2531 __ enter(); // required for proper stackwalking of RuntimeStub frame 2532 handleSOERegisters(true /*saving*/); 2533 2534 // For EVEX with VL and BW, provide a standard mask, VL = 128 will guide the merge 2535 // context for the registers used, where all instructions below are using 128-bit mode 2536 // On EVEX without VL and BW, these instructions will all be AVX. 2537 if (VM_Version::supports_avx512vlbw()) { 2538 __ movl(rdx, 0xffff); 2539 __ kmovdl(k1, rdx); 2540 } 2541 2542 // load registers from incoming parameters 2543 const Address from_param(rbp, 8+0); 2544 const Address to_param (rbp, 8+4); 2545 const Address key_param (rbp, 8+8); 2546 const Address rvec_param (rbp, 8+12); 2547 const Address len_param (rbp, 8+16); 2548 2549 __ movptr(from , from_param); 2550 __ movptr(to , to_param); 2551 __ movptr(key , key_param); 2552 __ movptr(rvec , rvec_param); 2553 __ movptr(len_reg , len_param); 2554 2555 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); 2556 __ movdqu(xmm_prev_block_cipher, Address(rvec, 0x00)); // initialize with initial rvec 2557 2558 __ xorptr(pos, pos); 2559 2560 // now split to different paths depending on the keylen (len in ints of AESCrypt.KLE array (52=192, or 60=256)) 2561 // rvec is reused 2562 __ movl(rvec, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); 2563 __ cmpl(rvec, 52); 2564 __ jcc(Assembler::equal, L_multiBlock_loopTop[1]); 2565 __ cmpl(rvec, 60); 2566 __ jcc(Assembler::equal, L_multiBlock_loopTop[2]); 2567 2568 #define DoFour(opc, src_reg) \ 2569 __ opc(xmm_result0, src_reg); \ 2570 __ opc(xmm_result1, src_reg); \ 2571 __ opc(xmm_result2, src_reg); \ 2572 __ opc(xmm_result3, src_reg); \ 2573 2574 for (int k = 0; k < 3; ++k) { 2575 __ align(OptoLoopAlignment); 2576 __ BIND(L_multiBlock_loopTop[k]); 2577 __ cmpptr(len_reg, PARALLEL_FACTOR * AESBlockSize); // see if at least 4 blocks left 2578 __ jcc(Assembler::less, L_singleBlock_loopTop[k]); 2579 2580 __ movdqu(xmm_result0, Address(from, pos, Address::times_1, 0 * AESBlockSize)); // get next 4 blocks into xmmresult registers 2581 __ movdqu(xmm_result1, Address(from, pos, Address::times_1, 1 * AESBlockSize)); 2582 __ movdqu(xmm_result2, Address(from, pos, Address::times_1, 2 * AESBlockSize)); 2583 __ movdqu(xmm_result3, Address(from, pos, Address::times_1, 3 * AESBlockSize)); 2584 2585 // the java expanded key ordering is rotated one position from what we want 2586 // so we start from 0x10 here and hit 0x00 last 2587 load_key(xmm_key_tmp0, key, 0x10, xmm_key_shuf_mask); 2588 DoFour(pxor, xmm_key_tmp0); //xor with first key 2589 // do the aes dec rounds 2590 for (int rnum = 1; rnum <= ROUNDS[k];) { 2591 //load two keys at a time 2592 //k1->0x20, ..., k9->0xa0, k10->0x00 2593 load_key(xmm_key_tmp1, key, (rnum + 1) * 0x10, xmm_key_shuf_mask); 2594 load_key(xmm_key_tmp0, key, ((rnum + 2) % (ROUNDS[k] + 1)) * 0x10, xmm_key_shuf_mask); // hit 0x00 last! 2595 DoFour(aesdec, xmm_key_tmp1); 2596 rnum++; 2597 if (rnum != ROUNDS[k]) { 2598 DoFour(aesdec, xmm_key_tmp0); 2599 } 2600 else { 2601 DoFour(aesdeclast, xmm_key_tmp0); 2602 } 2603 rnum++; 2604 } 2605 2606 // for each result, xor with the r vector of previous cipher block 2607 __ pxor(xmm_result0, xmm_prev_block_cipher); 2608 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 0 * AESBlockSize)); 2609 __ pxor(xmm_result1, xmm_prev_block_cipher); 2610 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 1 * AESBlockSize)); 2611 __ pxor(xmm_result2, xmm_prev_block_cipher); 2612 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 2 * AESBlockSize)); 2613 __ pxor(xmm_result3, xmm_prev_block_cipher); 2614 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 3 * AESBlockSize)); // this will carry over to next set of blocks 2615 2616 // store 4 results into the next 64 bytes of output 2617 __ movdqu(Address(to, pos, Address::times_1, 0 * AESBlockSize), xmm_result0); 2618 __ movdqu(Address(to, pos, Address::times_1, 1 * AESBlockSize), xmm_result1); 2619 __ movdqu(Address(to, pos, Address::times_1, 2 * AESBlockSize), xmm_result2); 2620 __ movdqu(Address(to, pos, Address::times_1, 3 * AESBlockSize), xmm_result3); 2621 2622 __ addptr(pos, 4 * AESBlockSize); 2623 __ subptr(len_reg, 4 * AESBlockSize); 2624 __ jmp(L_multiBlock_loopTop[k]); 2625 2626 //singleBlock starts here 2627 __ align(OptoLoopAlignment); 2628 __ BIND(L_singleBlock_loopTop[k]); 2629 __ cmpptr(len_reg, 0); // any blocks left? 2630 __ jcc(Assembler::equal, L_exit); 2631 __ movdqu(xmm_result0, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of cipher input 2632 __ movdqa(xmm_result1, xmm_result0); 2633 2634 load_key(xmm_key_tmp0, key, 0x10, xmm_key_shuf_mask); 2635 __ pxor(xmm_result0, xmm_key_tmp0); 2636 // do the aes dec rounds 2637 for (int rnum = 1; rnum < ROUNDS[k]; rnum++) { 2638 // the java expanded key ordering is rotated one position from what we want 2639 load_key(xmm_key_tmp0, key, (rnum + 1) * 0x10, xmm_key_shuf_mask); 2640 __ aesdec(xmm_result0, xmm_key_tmp0); 2641 } 2642 load_key(xmm_key_tmp0, key, 0x00, xmm_key_shuf_mask); 2643 __ aesdeclast(xmm_result0, xmm_key_tmp0); 2644 __ pxor(xmm_result0, xmm_prev_block_cipher); // xor with the current r vector 2645 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result0); // store into the next 16 bytes of output 2646 // no need to store r to memory until we exit 2647 __ movdqa(xmm_prev_block_cipher, xmm_result1); // set up next r vector with cipher input from this block 2648 2649 __ addptr(pos, AESBlockSize); 2650 __ subptr(len_reg, AESBlockSize); 2651 __ jmp(L_singleBlock_loopTop[k]); 2652 }//for 128/192/256 2653 2654 __ BIND(L_exit); 2655 __ movptr(rvec, rvec_param); // restore this since reused earlier 2656 __ movdqu(Address(rvec, 0), xmm_prev_block_cipher); // final value of r stored in rvec of CipherBlockChaining object 2657 handleSOERegisters(false /*restoring*/); 2658 __ movptr(rax, len_param); // return length 2659 __ leave(); // required for proper stackwalking of RuntimeStub frame 2660 __ ret(0); 2661 2662 return start; 2663 } 2664 2665 // CTR AES crypt. 2666 // In 32-bit stub, parallelize 4 blocks at a time 2667 // Arguments: 2668 // 2669 // Inputs: 2670 // c_rarg0 - source byte array address 2671 // c_rarg1 - destination byte array address 2672 // c_rarg2 - K (key) in little endian int array 2673 // c_rarg3 - counter vector byte array address 2674 // c_rarg4 - input length 2675 // 2676 // Output: 2677 // rax - input length 2678 // 2679 address generate_counterMode_AESCrypt_Parallel() { 2680 assert(UseAES, "need AES instructions and misaligned SSE support"); 2681 __ align(CodeEntryAlignment); 2682 StubCodeMark mark(this, "StubRoutines", "counterMode_AESCrypt"); 2683 address start = __ pc(); 2684 const Register from = rsi; // source array address 2685 const Register to = rdx; // destination array address 2686 const Register key = rcx; // key array address 2687 const Register counter = rdi; // counter byte array initialized from initvector array address 2688 // and updated with the incremented counter in the end 2689 const Register len_reg = rbx; 2690 const Register pos = rax; 2691 2692 __ enter(); // required for proper stackwalking of RuntimeStub frame 2693 handleSOERegisters(true /*saving*/); // save rbx, rsi, rdi 2694 2695 // For EVEX with VL and BW, provide a standard mask, VL = 128 will guide the merge 2696 // context for the registers used, where all instructions below are using 128-bit mode 2697 // On EVEX without VL and BW, these instructions will all be AVX. 2698 if (VM_Version::supports_avx512vlbw()) { 2699 __ movl(rdx, 0xffff); 2700 __ kmovdl(k1, rdx); 2701 } 2702 2703 // load registers from incoming parameters 2704 const Address from_param(rbp, 8+0); 2705 const Address to_param (rbp, 8+4); 2706 const Address key_param (rbp, 8+8); 2707 const Address rvec_param (rbp, 8+12); 2708 const Address len_param (rbp, 8+16); 2709 const Address saved_counter_param(rbp, 8 + 20); 2710 const Address used_addr_param(rbp, 8 + 24); 2711 2712 __ movptr(from , from_param); 2713 __ movptr(to , to_param); 2714 __ movptr(len_reg , len_param); 2715 2716 // Use the partially used encrpyted counter from last invocation 2717 Label L_exit_preLoop, L_preLoop_start; 2718 2719 // Use the registers 'counter' and 'key' here in this preloop 2720 // to hold of last 2 params 'used' and 'saved_encCounter_start' 2721 Register used = counter; 2722 Register saved_encCounter_start = key; 2723 Register used_addr = saved_encCounter_start; 2724 2725 __ movptr(used_addr, used_addr_param); 2726 __ movptr(used, Address(used_addr, 0)); 2727 __ movptr(saved_encCounter_start, saved_counter_param); 2728 2729 __ BIND(L_preLoop_start); 2730 __ cmpptr(used, 16); 2731 __ jcc(Assembler::aboveEqual, L_exit_preLoop); 2732 __ cmpptr(len_reg, 0); 2733 __ jcc(Assembler::lessEqual, L_exit_preLoop); 2734 __ movb(rax, Address(saved_encCounter_start, used)); 2735 __ xorb(rax, Address(from, 0)); 2736 __ movb(Address(to, 0), rax); 2737 __ addptr(from, 1); 2738 __ addptr(to, 1); 2739 __ addptr(used, 1); 2740 __ subptr(len_reg, 1); 2741 2742 __ jmp(L_preLoop_start); 2743 2744 __ BIND(L_exit_preLoop); 2745 __ movptr(used_addr, used_addr_param); 2746 __ movptr(used_addr, used_addr_param); 2747 __ movl(Address(used_addr, 0), used); 2748 2749 // load the parameters 'key' and 'counter' 2750 __ movptr(key, key_param); 2751 __ movptr(counter, rvec_param); 2752 2753 // xmm register assignments for the loops below 2754 const XMMRegister xmm_curr_counter = xmm0; 2755 const XMMRegister xmm_counter_shuf_mask = xmm1; // need to be reloaded 2756 const XMMRegister xmm_key_shuf_mask = xmm2; // need to be reloaded 2757 const XMMRegister xmm_key = xmm3; 2758 const XMMRegister xmm_result0 = xmm4; 2759 const XMMRegister xmm_result1 = xmm5; 2760 const XMMRegister xmm_result2 = xmm6; 2761 const XMMRegister xmm_result3 = xmm7; 2762 const XMMRegister xmm_from0 = xmm1; //reuse XMM register 2763 const XMMRegister xmm_from1 = xmm2; 2764 const XMMRegister xmm_from2 = xmm3; 2765 const XMMRegister xmm_from3 = xmm4; 2766 2767 //for key_128, key_192, key_256 2768 const int rounds[3] = {10, 12, 14}; 2769 Label L_singleBlockLoopTop[3]; 2770 Label L_multiBlock_loopTop[3]; 2771 Label L_key192_top, L_key256_top; 2772 Label L_incCounter[3][4]; // 3: different key length, 4: 4 blocks at a time 2773 Label L_incCounter_single[3]; //for single block, key128, key192, key256 2774 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]; 2775 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]; 2776 2777 Label L_exit; 2778 const int PARALLEL_FACTOR = 4; //because of the limited register number 2779 2780 // initialize counter with initial counter 2781 __ movdqu(xmm_curr_counter, Address(counter, 0x00)); 2782 __ movdqu(xmm_counter_shuf_mask, ExternalAddress(StubRoutines::x86::counter_shuffle_mask_addr())); 2783 __ pshufb(xmm_curr_counter, xmm_counter_shuf_mask); //counter is shuffled for increase 2784 2785 // key length could be only {11, 13, 15} * 4 = {44, 52, 60} 2786 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); 2787 __ movl(rax, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); 2788 __ cmpl(rax, 52); 2789 __ jcc(Assembler::equal, L_key192_top); 2790 __ cmpl(rax, 60); 2791 __ jcc(Assembler::equal, L_key256_top); 2792 2793 //key128 begins here 2794 __ movptr(pos, 0); // init pos before L_multiBlock_loopTop 2795 2796 #define CTR_DoFour(opc, src_reg) \ 2797 __ opc(xmm_result0, src_reg); \ 2798 __ opc(xmm_result1, src_reg); \ 2799 __ opc(xmm_result2, src_reg); \ 2800 __ opc(xmm_result3, src_reg); 2801 2802 // k == 0 : generate code for key_128 2803 // k == 1 : generate code for key_192 2804 // k == 2 : generate code for key_256 2805 for (int k = 0; k < 3; ++k) { 2806 //multi blocks starts here 2807 __ align(OptoLoopAlignment); 2808 __ BIND(L_multiBlock_loopTop[k]); 2809 __ cmpptr(len_reg, PARALLEL_FACTOR * AESBlockSize); // see if at least PARALLEL_FACTOR blocks left 2810 __ jcc(Assembler::less, L_singleBlockLoopTop[k]); 2811 2812 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); 2813 __ movdqu(xmm_counter_shuf_mask, ExternalAddress(StubRoutines::x86::counter_shuffle_mask_addr())); 2814 2815 //load, then increase counters 2816 CTR_DoFour(movdqa, xmm_curr_counter); 2817 __ push(rbx); 2818 inc_counter(rbx, xmm_result1, 0x01, L_incCounter[k][0]); 2819 inc_counter(rbx, xmm_result2, 0x02, L_incCounter[k][1]); 2820 inc_counter(rbx, xmm_result3, 0x03, L_incCounter[k][2]); 2821 inc_counter(rbx, xmm_curr_counter, 0x04, L_incCounter[k][3]); 2822 __ pop (rbx); 2823 2824 load_key(xmm_key, key, 0x00, xmm_key_shuf_mask); // load Round 0 key. interleaving for better performance 2825 2826 CTR_DoFour(pshufb, xmm_counter_shuf_mask); // after increased, shuffled counters back for PXOR 2827 CTR_DoFour(pxor, xmm_key); //PXOR with Round 0 key 2828 2829 for (int i = 1; i < rounds[k]; ++i) { 2830 load_key(xmm_key, key, (0x10 * i), xmm_key_shuf_mask); 2831 CTR_DoFour(aesenc, xmm_key); 2832 } 2833 load_key(xmm_key, key, (0x10 * rounds[k]), xmm_key_shuf_mask); 2834 CTR_DoFour(aesenclast, xmm_key); 2835 2836 // get next PARALLEL_FACTOR blocks into xmm_from registers 2837 __ movdqu(xmm_from0, Address(from, pos, Address::times_1, 0 * AESBlockSize)); 2838 __ movdqu(xmm_from1, Address(from, pos, Address::times_1, 1 * AESBlockSize)); 2839 __ movdqu(xmm_from2, Address(from, pos, Address::times_1, 2 * AESBlockSize)); 2840 2841 // PXOR with input text 2842 __ pxor(xmm_result0, xmm_from0); //result0 is xmm4 2843 __ pxor(xmm_result1, xmm_from1); 2844 __ pxor(xmm_result2, xmm_from2); 2845 2846 // store PARALLEL_FACTOR results into the next 64 bytes of output 2847 __ movdqu(Address(to, pos, Address::times_1, 0 * AESBlockSize), xmm_result0); 2848 __ movdqu(Address(to, pos, Address::times_1, 1 * AESBlockSize), xmm_result1); 2849 __ movdqu(Address(to, pos, Address::times_1, 2 * AESBlockSize), xmm_result2); 2850 2851 // do it here after xmm_result0 is saved, because xmm_from3 reuse the same register of xmm_result0. 2852 __ movdqu(xmm_from3, Address(from, pos, Address::times_1, 3 * AESBlockSize)); 2853 __ pxor(xmm_result3, xmm_from3); 2854 __ movdqu(Address(to, pos, Address::times_1, 3 * AESBlockSize), xmm_result3); 2855 2856 __ addptr(pos, PARALLEL_FACTOR * AESBlockSize); // increase the length of crypt text 2857 __ subptr(len_reg, PARALLEL_FACTOR * AESBlockSize); // decrease the remaining length 2858 __ jmp(L_multiBlock_loopTop[k]); 2859 2860 // singleBlock starts here 2861 __ align(OptoLoopAlignment); 2862 __ BIND(L_singleBlockLoopTop[k]); 2863 __ cmpptr(len_reg, 0); 2864 __ jcc(Assembler::equal, L_exit); 2865 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); 2866 __ movdqu(xmm_counter_shuf_mask, ExternalAddress(StubRoutines::x86::counter_shuffle_mask_addr())); 2867 __ movdqa(xmm_result0, xmm_curr_counter); 2868 load_key(xmm_key, key, 0x00, xmm_key_shuf_mask); 2869 __ push(rbx);//rbx is used for increasing counter 2870 inc_counter(rbx, xmm_curr_counter, 0x01, L_incCounter_single[k]); 2871 __ pop (rbx); 2872 __ pshufb(xmm_result0, xmm_counter_shuf_mask); 2873 __ pxor(xmm_result0, xmm_key); 2874 for (int i = 1; i < rounds[k]; i++) { 2875 load_key(xmm_key, key, (0x10 * i), xmm_key_shuf_mask); 2876 __ aesenc(xmm_result0, xmm_key); 2877 } 2878 load_key(xmm_key, key, (0x10 * rounds[k]), xmm_key_shuf_mask); 2879 __ aesenclast(xmm_result0, xmm_key); 2880 __ cmpptr(len_reg, AESBlockSize); 2881 __ jcc(Assembler::less, L_processTail_insr[k]); 2882 __ movdqu(xmm_from0, Address(from, pos, Address::times_1, 0 * AESBlockSize)); 2883 __ pxor(xmm_result0, xmm_from0); 2884 __ movdqu(Address(to, pos, Address::times_1, 0 * AESBlockSize), xmm_result0); 2885 __ addptr(pos, AESBlockSize); 2886 __ subptr(len_reg, AESBlockSize); 2887 __ jmp(L_singleBlockLoopTop[k]); 2888 2889 __ BIND(L_processTail_insr[k]); // Process the tail part of the input array 2890 __ addptr(pos, len_reg); // 1. Insert bytes from src array into xmm_from0 register 2891 __ testptr(len_reg, 8); 2892 __ jcc(Assembler::zero, L_processTail_4_insr[k]); 2893 __ subptr(pos,8); 2894 __ pinsrd(xmm_from0, Address(from, pos), 0); 2895 __ pinsrd(xmm_from0, Address(from, pos, Address::times_1, 4), 1); 2896 __ BIND(L_processTail_4_insr[k]); 2897 __ testptr(len_reg, 4); 2898 __ jcc(Assembler::zero, L_processTail_2_insr[k]); 2899 __ subptr(pos,4); 2900 __ pslldq(xmm_from0, 4); 2901 __ pinsrd(xmm_from0, Address(from, pos), 0); 2902 __ BIND(L_processTail_2_insr[k]); 2903 __ testptr(len_reg, 2); 2904 __ jcc(Assembler::zero, L_processTail_1_insr[k]); 2905 __ subptr(pos, 2); 2906 __ pslldq(xmm_from0, 2); 2907 __ pinsrw(xmm_from0, Address(from, pos), 0); 2908 __ BIND(L_processTail_1_insr[k]); 2909 __ testptr(len_reg, 1); 2910 __ jcc(Assembler::zero, L_processTail_exit_insr[k]); 2911 __ subptr(pos, 1); 2912 __ pslldq(xmm_from0, 1); 2913 __ pinsrb(xmm_from0, Address(from, pos), 0); 2914 __ BIND(L_processTail_exit_insr[k]); 2915 2916 __ movptr(saved_encCounter_start, saved_counter_param); 2917 __ movdqu(Address(saved_encCounter_start, 0), xmm_result0); // 2. Perform pxor of the encrypted counter and plaintext Bytes. 2918 __ pxor(xmm_result0, xmm_from0); // Also the encrypted counter is saved for next invocation. 2919 2920 __ testptr(len_reg, 8); 2921 __ jcc(Assembler::zero, L_processTail_4_extr[k]); // 3. Extract bytes from xmm_result0 into the dest. array 2922 __ pextrd(Address(to, pos), xmm_result0, 0); 2923 __ pextrd(Address(to, pos, Address::times_1, 4), xmm_result0, 1); 2924 __ psrldq(xmm_result0, 8); 2925 __ addptr(pos, 8); 2926 __ BIND(L_processTail_4_extr[k]); 2927 __ testptr(len_reg, 4); 2928 __ jcc(Assembler::zero, L_processTail_2_extr[k]); 2929 __ pextrd(Address(to, pos), xmm_result0, 0); 2930 __ psrldq(xmm_result0, 4); 2931 __ addptr(pos, 4); 2932 __ BIND(L_processTail_2_extr[k]); 2933 __ testptr(len_reg, 2); 2934 __ jcc(Assembler::zero, L_processTail_1_extr[k]); 2935 __ pextrb(Address(to, pos), xmm_result0, 0); 2936 __ pextrb(Address(to, pos, Address::times_1, 1), xmm_result0, 1); 2937 __ psrldq(xmm_result0, 2); 2938 __ addptr(pos, 2); 2939 __ BIND(L_processTail_1_extr[k]); 2940 __ testptr(len_reg, 1); 2941 __ jcc(Assembler::zero, L_processTail_exit_extr[k]); 2942 __ pextrb(Address(to, pos), xmm_result0, 0); 2943 2944 __ BIND(L_processTail_exit_extr[k]); 2945 __ movptr(used_addr, used_addr_param); 2946 __ movl(Address(used_addr, 0), len_reg); 2947 __ jmp(L_exit); 2948 } 2949 2950 __ BIND(L_exit); 2951 __ movdqu(xmm_counter_shuf_mask, ExternalAddress(StubRoutines::x86::counter_shuffle_mask_addr())); 2952 __ pshufb(xmm_curr_counter, xmm_counter_shuf_mask); //counter is shuffled back. 2953 __ movdqu(Address(counter, 0), xmm_curr_counter); //save counter back 2954 handleSOERegisters(false /*restoring*/); 2955 __ movptr(rax, len_param); // return length 2956 __ leave(); // required for proper stackwalking of RuntimeStub frame 2957 __ ret(0); 2958 2959 __ BIND (L_key192_top); 2960 __ movptr(pos, 0); // init pos before L_multiBlock_loopTop 2961 __ jmp(L_multiBlock_loopTop[1]); //key192 2962 2963 __ BIND (L_key256_top); 2964 __ movptr(pos, 0); // init pos before L_multiBlock_loopTop 2965 __ jmp(L_multiBlock_loopTop[2]); //key192 2966 2967 return start; 2968 } 2969 2970 address generate_upper_word_mask() { 2971 __ align(64); 2972 StubCodeMark mark(this, "StubRoutines", "upper_word_mask"); 2973 address start = __ pc(); 2974 __ emit_data(0x00000000, relocInfo::none, 0); 2975 __ emit_data(0x00000000, relocInfo::none, 0); 2976 __ emit_data(0x00000000, relocInfo::none, 0); 2977 __ emit_data(0xFFFFFFFF, relocInfo::none, 0); 2978 return start; 2979 } 2980 2981 address generate_shuffle_byte_flip_mask() { 2982 __ align(64); 2983 StubCodeMark mark(this, "StubRoutines", "shuffle_byte_flip_mask"); 2984 address start = __ pc(); 2985 __ emit_data(0x0c0d0e0f, relocInfo::none, 0); 2986 __ emit_data(0x08090a0b, relocInfo::none, 0); 2987 __ emit_data(0x04050607, relocInfo::none, 0); 2988 __ emit_data(0x00010203, relocInfo::none, 0); 2989 return start; 2990 } 2991 2992 // ofs and limit are use for multi-block byte array. 2993 // int com.sun.security.provider.DigestBase.implCompressMultiBlock(byte[] b, int ofs, int limit) 2994 address generate_sha1_implCompress(bool multi_block, const char *name) { 2995 __ align(CodeEntryAlignment); 2996 StubCodeMark mark(this, "StubRoutines", name); 2997 address start = __ pc(); 2998 2999 Register buf = rax; 3000 Register state = rdx; 3001 Register ofs = rcx; 3002 Register limit = rdi; 3003 3004 const Address buf_param(rbp, 8 + 0); 3005 const Address state_param(rbp, 8 + 4); 3006 const Address ofs_param(rbp, 8 + 8); 3007 const Address limit_param(rbp, 8 + 12); 3008 3009 const XMMRegister abcd = xmm0; 3010 const XMMRegister e0 = xmm1; 3011 const XMMRegister e1 = xmm2; 3012 const XMMRegister msg0 = xmm3; 3013 3014 const XMMRegister msg1 = xmm4; 3015 const XMMRegister msg2 = xmm5; 3016 const XMMRegister msg3 = xmm6; 3017 const XMMRegister shuf_mask = xmm7; 3018 3019 __ enter(); 3020 __ subptr(rsp, 8 * wordSize); 3021 if (multi_block) { 3022 __ push(limit); 3023 } 3024 __ movptr(buf, buf_param); 3025 __ movptr(state, state_param); 3026 if (multi_block) { 3027 __ movptr(ofs, ofs_param); 3028 __ movptr(limit, limit_param); 3029 } 3030 3031 __ fast_sha1(abcd, e0, e1, msg0, msg1, msg2, msg3, shuf_mask, 3032 buf, state, ofs, limit, rsp, multi_block); 3033 3034 if (multi_block) { 3035 __ pop(limit); 3036 } 3037 __ addptr(rsp, 8 * wordSize); 3038 __ leave(); 3039 __ ret(0); 3040 return start; 3041 } 3042 3043 address generate_pshuffle_byte_flip_mask() { 3044 __ align(64); 3045 StubCodeMark mark(this, "StubRoutines", "pshuffle_byte_flip_mask"); 3046 address start = __ pc(); 3047 __ emit_data(0x00010203, relocInfo::none, 0); 3048 __ emit_data(0x04050607, relocInfo::none, 0); 3049 __ emit_data(0x08090a0b, relocInfo::none, 0); 3050 __ emit_data(0x0c0d0e0f, relocInfo::none, 0); 3051 return start; 3052 } 3053 3054 // ofs and limit are use for multi-block byte array. 3055 // int com.sun.security.provider.DigestBase.implCompressMultiBlock(byte[] b, int ofs, int limit) 3056 address generate_sha256_implCompress(bool multi_block, const char *name) { 3057 __ align(CodeEntryAlignment); 3058 StubCodeMark mark(this, "StubRoutines", name); 3059 address start = __ pc(); 3060 3061 Register buf = rbx; 3062 Register state = rsi; 3063 Register ofs = rdx; 3064 Register limit = rcx; 3065 3066 const Address buf_param(rbp, 8 + 0); 3067 const Address state_param(rbp, 8 + 4); 3068 const Address ofs_param(rbp, 8 + 8); 3069 const Address limit_param(rbp, 8 + 12); 3070 3071 const XMMRegister msg = xmm0; 3072 const XMMRegister state0 = xmm1; 3073 const XMMRegister state1 = xmm2; 3074 const XMMRegister msgtmp0 = xmm3; 3075 3076 const XMMRegister msgtmp1 = xmm4; 3077 const XMMRegister msgtmp2 = xmm5; 3078 const XMMRegister msgtmp3 = xmm6; 3079 const XMMRegister msgtmp4 = xmm7; 3080 3081 __ enter(); 3082 __ subptr(rsp, 8 * wordSize); 3083 handleSOERegisters(true /*saving*/); 3084 __ movptr(buf, buf_param); 3085 __ movptr(state, state_param); 3086 if (multi_block) { 3087 __ movptr(ofs, ofs_param); 3088 __ movptr(limit, limit_param); 3089 } 3090 3091 __ fast_sha256(msg, state0, state1, msgtmp0, msgtmp1, msgtmp2, msgtmp3, msgtmp4, 3092 buf, state, ofs, limit, rsp, multi_block); 3093 3094 handleSOERegisters(false); 3095 __ addptr(rsp, 8 * wordSize); 3096 __ leave(); 3097 __ ret(0); 3098 return start; 3099 } 3100 3101 // byte swap x86 long 3102 address generate_ghash_long_swap_mask() { 3103 __ align(CodeEntryAlignment); 3104 StubCodeMark mark(this, "StubRoutines", "ghash_long_swap_mask"); 3105 address start = __ pc(); 3106 __ emit_data(0x0b0a0908, relocInfo::none, 0); 3107 __ emit_data(0x0f0e0d0c, relocInfo::none, 0); 3108 __ emit_data(0x03020100, relocInfo::none, 0); 3109 __ emit_data(0x07060504, relocInfo::none, 0); 3110 3111 return start; 3112 } 3113 3114 // byte swap x86 byte array 3115 address generate_ghash_byte_swap_mask() { 3116 __ align(CodeEntryAlignment); 3117 StubCodeMark mark(this, "StubRoutines", "ghash_byte_swap_mask"); 3118 address start = __ pc(); 3119 __ emit_data(0x0c0d0e0f, relocInfo::none, 0); 3120 __ emit_data(0x08090a0b, relocInfo::none, 0); 3121 __ emit_data(0x04050607, relocInfo::none, 0); 3122 __ emit_data(0x00010203, relocInfo::none, 0); 3123 return start; 3124 } 3125 3126 /* Single and multi-block ghash operations */ 3127 address generate_ghash_processBlocks() { 3128 assert(UseGHASHIntrinsics, "need GHASH intrinsics and CLMUL support"); 3129 __ align(CodeEntryAlignment); 3130 Label L_ghash_loop, L_exit; 3131 StubCodeMark mark(this, "StubRoutines", "ghash_processBlocks"); 3132 address start = __ pc(); 3133 3134 const Register state = rdi; 3135 const Register subkeyH = rsi; 3136 const Register data = rdx; 3137 const Register blocks = rcx; 3138 3139 const Address state_param(rbp, 8+0); 3140 const Address subkeyH_param(rbp, 8+4); 3141 const Address data_param(rbp, 8+8); 3142 const Address blocks_param(rbp, 8+12); 3143 3144 const XMMRegister xmm_temp0 = xmm0; 3145 const XMMRegister xmm_temp1 = xmm1; 3146 const XMMRegister xmm_temp2 = xmm2; 3147 const XMMRegister xmm_temp3 = xmm3; 3148 const XMMRegister xmm_temp4 = xmm4; 3149 const XMMRegister xmm_temp5 = xmm5; 3150 const XMMRegister xmm_temp6 = xmm6; 3151 const XMMRegister xmm_temp7 = xmm7; 3152 3153 __ enter(); 3154 handleSOERegisters(true); // Save registers 3155 3156 // For EVEX with VL and BW, provide a standard mask, VL = 128 will guide the merge 3157 // context for the registers used, where all instructions below are using 128-bit mode 3158 // On EVEX without VL and BW, these instructions will all be AVX. 3159 if (VM_Version::supports_avx512vlbw()) { 3160 __ movl(rdx, 0xffff); 3161 __ kmovdl(k1, rdx); 3162 } 3163 3164 __ movptr(state, state_param); 3165 __ movptr(subkeyH, subkeyH_param); 3166 __ movptr(data, data_param); 3167 __ movptr(blocks, blocks_param); 3168 3169 __ movdqu(xmm_temp0, Address(state, 0)); 3170 __ pshufb(xmm_temp0, ExternalAddress(StubRoutines::x86::ghash_long_swap_mask_addr())); 3171 3172 __ movdqu(xmm_temp1, Address(subkeyH, 0)); 3173 __ pshufb(xmm_temp1, ExternalAddress(StubRoutines::x86::ghash_long_swap_mask_addr())); 3174 3175 __ BIND(L_ghash_loop); 3176 __ movdqu(xmm_temp2, Address(data, 0)); 3177 __ pshufb(xmm_temp2, ExternalAddress(StubRoutines::x86::ghash_byte_swap_mask_addr())); 3178 3179 __ pxor(xmm_temp0, xmm_temp2); 3180 3181 // 3182 // Multiply with the hash key 3183 // 3184 __ movdqu(xmm_temp3, xmm_temp0); 3185 __ pclmulqdq(xmm_temp3, xmm_temp1, 0); // xmm3 holds a0*b0 3186 __ movdqu(xmm_temp4, xmm_temp0); 3187 __ pclmulqdq(xmm_temp4, xmm_temp1, 16); // xmm4 holds a0*b1 3188 3189 __ movdqu(xmm_temp5, xmm_temp0); 3190 __ pclmulqdq(xmm_temp5, xmm_temp1, 1); // xmm5 holds a1*b0 3191 __ movdqu(xmm_temp6, xmm_temp0); 3192 __ pclmulqdq(xmm_temp6, xmm_temp1, 17); // xmm6 holds a1*b1 3193 3194 __ pxor(xmm_temp4, xmm_temp5); // xmm4 holds a0*b1 + a1*b0 3195 3196 __ movdqu(xmm_temp5, xmm_temp4); // move the contents of xmm4 to xmm5 3197 __ psrldq(xmm_temp4, 8); // shift by xmm4 64 bits to the right 3198 __ pslldq(xmm_temp5, 8); // shift by xmm5 64 bits to the left 3199 __ pxor(xmm_temp3, xmm_temp5); 3200 __ pxor(xmm_temp6, xmm_temp4); // Register pair <xmm6:xmm3> holds the result 3201 // of the carry-less multiplication of 3202 // xmm0 by xmm1. 3203 3204 // We shift the result of the multiplication by one bit position 3205 // to the left to cope for the fact that the bits are reversed. 3206 __ movdqu(xmm_temp7, xmm_temp3); 3207 __ movdqu(xmm_temp4, xmm_temp6); 3208 __ pslld (xmm_temp3, 1); 3209 __ pslld(xmm_temp6, 1); 3210 __ psrld(xmm_temp7, 31); 3211 __ psrld(xmm_temp4, 31); 3212 __ movdqu(xmm_temp5, xmm_temp7); 3213 __ pslldq(xmm_temp4, 4); 3214 __ pslldq(xmm_temp7, 4); 3215 __ psrldq(xmm_temp5, 12); 3216 __ por(xmm_temp3, xmm_temp7); 3217 __ por(xmm_temp6, xmm_temp4); 3218 __ por(xmm_temp6, xmm_temp5); 3219 3220 // 3221 // First phase of the reduction 3222 // 3223 // Move xmm3 into xmm4, xmm5, xmm7 in order to perform the shifts 3224 // independently. 3225 __ movdqu(xmm_temp7, xmm_temp3); 3226 __ movdqu(xmm_temp4, xmm_temp3); 3227 __ movdqu(xmm_temp5, xmm_temp3); 3228 __ pslld(xmm_temp7, 31); // packed right shift shifting << 31 3229 __ pslld(xmm_temp4, 30); // packed right shift shifting << 30 3230 __ pslld(xmm_temp5, 25); // packed right shift shifting << 25 3231 __ pxor(xmm_temp7, xmm_temp4); // xor the shifted versions 3232 __ pxor(xmm_temp7, xmm_temp5); 3233 __ movdqu(xmm_temp4, xmm_temp7); 3234 __ pslldq(xmm_temp7, 12); 3235 __ psrldq(xmm_temp4, 4); 3236 __ pxor(xmm_temp3, xmm_temp7); // first phase of the reduction complete 3237 3238 // 3239 // Second phase of the reduction 3240 // 3241 // Make 3 copies of xmm3 in xmm2, xmm5, xmm7 for doing these 3242 // shift operations. 3243 __ movdqu(xmm_temp2, xmm_temp3); 3244 __ movdqu(xmm_temp7, xmm_temp3); 3245 __ movdqu(xmm_temp5, xmm_temp3); 3246 __ psrld(xmm_temp2, 1); // packed left shifting >> 1 3247 __ psrld(xmm_temp7, 2); // packed left shifting >> 2 3248 __ psrld(xmm_temp5, 7); // packed left shifting >> 7 3249 __ pxor(xmm_temp2, xmm_temp7); // xor the shifted versions 3250 __ pxor(xmm_temp2, xmm_temp5); 3251 __ pxor(xmm_temp2, xmm_temp4); 3252 __ pxor(xmm_temp3, xmm_temp2); 3253 __ pxor(xmm_temp6, xmm_temp3); // the result is in xmm6 3254 3255 __ decrement(blocks); 3256 __ jcc(Assembler::zero, L_exit); 3257 __ movdqu(xmm_temp0, xmm_temp6); 3258 __ addptr(data, 16); 3259 __ jmp(L_ghash_loop); 3260 3261 __ BIND(L_exit); 3262 // Byte swap 16-byte result 3263 __ pshufb(xmm_temp6, ExternalAddress(StubRoutines::x86::ghash_long_swap_mask_addr())); 3264 __ movdqu(Address(state, 0), xmm_temp6); // store the result 3265 3266 handleSOERegisters(false); // restore registers 3267 __ leave(); 3268 __ ret(0); 3269 return start; 3270 } 3271 3272 /** 3273 * Arguments: 3274 * 3275 * Inputs: 3276 * rsp(4) - int crc 3277 * rsp(8) - byte* buf 3278 * rsp(12) - int length 3279 * 3280 * Ouput: 3281 * rax - int crc result 3282 */ 3283 address generate_updateBytesCRC32() { 3284 assert(UseCRC32Intrinsics, "need AVX and CLMUL instructions"); 3285 3286 __ align(CodeEntryAlignment); 3287 StubCodeMark mark(this, "StubRoutines", "updateBytesCRC32"); 3288 3289 address start = __ pc(); 3290 3291 const Register crc = rdx; // crc 3292 const Register buf = rsi; // source java byte array address 3293 const Register len = rcx; // length 3294 const Register table = rdi; // crc_table address (reuse register) 3295 const Register tmp = rbx; 3296 assert_different_registers(crc, buf, len, table, tmp, rax); 3297 3298 BLOCK_COMMENT("Entry:"); 3299 __ enter(); // required for proper stackwalking of RuntimeStub frame 3300 __ push(rsi); 3301 __ push(rdi); 3302 __ push(rbx); 3303 3304 Address crc_arg(rbp, 8 + 0); 3305 Address buf_arg(rbp, 8 + 4); 3306 Address len_arg(rbp, 8 + 8); 3307 3308 // Load up: 3309 __ movl(crc, crc_arg); 3310 __ movptr(buf, buf_arg); 3311 __ movl(len, len_arg); 3312 3313 __ kernel_crc32(crc, buf, len, table, tmp); 3314 3315 __ movl(rax, crc); 3316 __ pop(rbx); 3317 __ pop(rdi); 3318 __ pop(rsi); 3319 __ vzeroupper(); 3320 __ leave(); // required for proper stackwalking of RuntimeStub frame 3321 __ ret(0); 3322 3323 return start; 3324 } 3325 3326 /** 3327 * Arguments: 3328 * 3329 * Inputs: 3330 * rsp(4) - int crc 3331 * rsp(8) - byte* buf 3332 * rsp(12) - int length 3333 * rsp(16) - table_start - optional (present only when doing a library_calll, 3334 * not used by x86 algorithm) 3335 * 3336 * Ouput: 3337 * rax - int crc result 3338 */ 3339 address generate_updateBytesCRC32C(bool is_pclmulqdq_supported) { 3340 assert(UseCRC32CIntrinsics, "need SSE4_2"); 3341 __ align(CodeEntryAlignment); 3342 StubCodeMark mark(this, "StubRoutines", "updateBytesCRC32C"); 3343 address start = __ pc(); 3344 const Register crc = rax; // crc 3345 const Register buf = rcx; // source java byte array address 3346 const Register len = rdx; // length 3347 const Register d = rbx; 3348 const Register g = rsi; 3349 const Register h = rdi; 3350 const Register empty = 0; // will never be used, in order not 3351 // to change a signature for crc32c_IPL_Alg2_Alt2 3352 // between 64/32 I'm just keeping it here 3353 assert_different_registers(crc, buf, len, d, g, h); 3354 3355 BLOCK_COMMENT("Entry:"); 3356 __ enter(); // required for proper stackwalking of RuntimeStub frame 3357 Address crc_arg(rsp, 4 + 4 + 0); // ESP+4 + 3358 // we need to add additional 4 because __ enter 3359 // have just pushed ebp on a stack 3360 Address buf_arg(rsp, 4 + 4 + 4); 3361 Address len_arg(rsp, 4 + 4 + 8); 3362 // Load up: 3363 __ movl(crc, crc_arg); 3364 __ movl(buf, buf_arg); 3365 __ movl(len, len_arg); 3366 __ push(d); 3367 __ push(g); 3368 __ push(h); 3369 __ crc32c_ipl_alg2_alt2(crc, buf, len, 3370 d, g, h, 3371 empty, empty, empty, 3372 xmm0, xmm1, xmm2, 3373 is_pclmulqdq_supported); 3374 __ pop(h); 3375 __ pop(g); 3376 __ pop(d); 3377 __ vzeroupper(); 3378 __ leave(); // required for proper stackwalking of RuntimeStub frame 3379 __ ret(0); 3380 3381 return start; 3382 } 3383 3384 address generate_libmExp() { 3385 StubCodeMark mark(this, "StubRoutines", "libmExp"); 3386 3387 address start = __ pc(); 3388 3389 const XMMRegister x0 = xmm0; 3390 const XMMRegister x1 = xmm1; 3391 const XMMRegister x2 = xmm2; 3392 const XMMRegister x3 = xmm3; 3393 3394 const XMMRegister x4 = xmm4; 3395 const XMMRegister x5 = xmm5; 3396 const XMMRegister x6 = xmm6; 3397 const XMMRegister x7 = xmm7; 3398 3399 const Register tmp = rbx; 3400 3401 BLOCK_COMMENT("Entry:"); 3402 __ enter(); // required for proper stackwalking of RuntimeStub frame 3403 __ fast_exp(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp); 3404 __ leave(); // required for proper stackwalking of RuntimeStub frame 3405 __ ret(0); 3406 3407 return start; 3408 3409 } 3410 3411 address generate_libmLog() { 3412 StubCodeMark mark(this, "StubRoutines", "libmLog"); 3413 3414 address start = __ pc(); 3415 3416 const XMMRegister x0 = xmm0; 3417 const XMMRegister x1 = xmm1; 3418 const XMMRegister x2 = xmm2; 3419 const XMMRegister x3 = xmm3; 3420 3421 const XMMRegister x4 = xmm4; 3422 const XMMRegister x5 = xmm5; 3423 const XMMRegister x6 = xmm6; 3424 const XMMRegister x7 = xmm7; 3425 3426 const Register tmp = rbx; 3427 3428 BLOCK_COMMENT("Entry:"); 3429 __ enter(); // required for proper stackwalking of RuntimeStub frame 3430 __ fast_log(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp); 3431 __ leave(); // required for proper stackwalking of RuntimeStub frame 3432 __ ret(0); 3433 3434 return start; 3435 3436 } 3437 3438 address generate_libmLog10() { 3439 StubCodeMark mark(this, "StubRoutines", "libmLog10"); 3440 3441 address start = __ pc(); 3442 3443 const XMMRegister x0 = xmm0; 3444 const XMMRegister x1 = xmm1; 3445 const XMMRegister x2 = xmm2; 3446 const XMMRegister x3 = xmm3; 3447 3448 const XMMRegister x4 = xmm4; 3449 const XMMRegister x5 = xmm5; 3450 const XMMRegister x6 = xmm6; 3451 const XMMRegister x7 = xmm7; 3452 3453 const Register tmp = rbx; 3454 3455 BLOCK_COMMENT("Entry:"); 3456 __ enter(); // required for proper stackwalking of RuntimeStub frame 3457 __ fast_log10(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp); 3458 __ leave(); // required for proper stackwalking of RuntimeStub frame 3459 __ ret(0); 3460 3461 return start; 3462 3463 } 3464 3465 address generate_libmPow() { 3466 StubCodeMark mark(this, "StubRoutines", "libmPow"); 3467 3468 address start = __ pc(); 3469 3470 const XMMRegister x0 = xmm0; 3471 const XMMRegister x1 = xmm1; 3472 const XMMRegister x2 = xmm2; 3473 const XMMRegister x3 = xmm3; 3474 3475 const XMMRegister x4 = xmm4; 3476 const XMMRegister x5 = xmm5; 3477 const XMMRegister x6 = xmm6; 3478 const XMMRegister x7 = xmm7; 3479 3480 const Register tmp = rbx; 3481 3482 BLOCK_COMMENT("Entry:"); 3483 __ enter(); // required for proper stackwalking of RuntimeStub frame 3484 __ fast_pow(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp); 3485 __ leave(); // required for proper stackwalking of RuntimeStub frame 3486 __ ret(0); 3487 3488 return start; 3489 3490 } 3491 3492 address generate_libm_reduce_pi04l() { 3493 StubCodeMark mark(this, "StubRoutines", "libm_reduce_pi04l"); 3494 3495 address start = __ pc(); 3496 3497 BLOCK_COMMENT("Entry:"); 3498 __ libm_reduce_pi04l(rax, rcx, rdx, rbx, rsi, rdi, rbp, rsp); 3499 3500 return start; 3501 3502 } 3503 3504 address generate_libm_sin_cos_huge() { 3505 StubCodeMark mark(this, "StubRoutines", "libm_sin_cos_huge"); 3506 3507 address start = __ pc(); 3508 3509 const XMMRegister x0 = xmm0; 3510 const XMMRegister x1 = xmm1; 3511 3512 BLOCK_COMMENT("Entry:"); 3513 __ libm_sincos_huge(x0, x1, rax, rcx, rdx, rbx, rsi, rdi, rbp, rsp); 3514 3515 return start; 3516 3517 } 3518 3519 address generate_libmSin() { 3520 StubCodeMark mark(this, "StubRoutines", "libmSin"); 3521 3522 address start = __ pc(); 3523 3524 const XMMRegister x0 = xmm0; 3525 const XMMRegister x1 = xmm1; 3526 const XMMRegister x2 = xmm2; 3527 const XMMRegister x3 = xmm3; 3528 3529 const XMMRegister x4 = xmm4; 3530 const XMMRegister x5 = xmm5; 3531 const XMMRegister x6 = xmm6; 3532 const XMMRegister x7 = xmm7; 3533 3534 BLOCK_COMMENT("Entry:"); 3535 __ enter(); // required for proper stackwalking of RuntimeStub frame 3536 __ fast_sin(x0, x1, x2, x3, x4, x5, x6, x7, rax, rbx, rdx); 3537 __ leave(); // required for proper stackwalking of RuntimeStub frame 3538 __ ret(0); 3539 3540 return start; 3541 3542 } 3543 3544 address generate_libmCos() { 3545 StubCodeMark mark(this, "StubRoutines", "libmCos"); 3546 3547 address start = __ pc(); 3548 3549 const XMMRegister x0 = xmm0; 3550 const XMMRegister x1 = xmm1; 3551 const XMMRegister x2 = xmm2; 3552 const XMMRegister x3 = xmm3; 3553 3554 const XMMRegister x4 = xmm4; 3555 const XMMRegister x5 = xmm5; 3556 const XMMRegister x6 = xmm6; 3557 const XMMRegister x7 = xmm7; 3558 3559 const Register tmp = rbx; 3560 3561 BLOCK_COMMENT("Entry:"); 3562 __ enter(); // required for proper stackwalking of RuntimeStub frame 3563 __ fast_cos(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp); 3564 __ leave(); // required for proper stackwalking of RuntimeStub frame 3565 __ ret(0); 3566 3567 return start; 3568 3569 } 3570 3571 address generate_libm_tan_cot_huge() { 3572 StubCodeMark mark(this, "StubRoutines", "libm_tan_cot_huge"); 3573 3574 address start = __ pc(); 3575 3576 const XMMRegister x0 = xmm0; 3577 const XMMRegister x1 = xmm1; 3578 3579 BLOCK_COMMENT("Entry:"); 3580 __ libm_tancot_huge(x0, x1, rax, rcx, rdx, rbx, rsi, rdi, rbp, rsp); 3581 3582 return start; 3583 3584 } 3585 3586 address generate_libmTan() { 3587 StubCodeMark mark(this, "StubRoutines", "libmTan"); 3588 3589 address start = __ pc(); 3590 3591 const XMMRegister x0 = xmm0; 3592 const XMMRegister x1 = xmm1; 3593 const XMMRegister x2 = xmm2; 3594 const XMMRegister x3 = xmm3; 3595 3596 const XMMRegister x4 = xmm4; 3597 const XMMRegister x5 = xmm5; 3598 const XMMRegister x6 = xmm6; 3599 const XMMRegister x7 = xmm7; 3600 3601 const Register tmp = rbx; 3602 3603 BLOCK_COMMENT("Entry:"); 3604 __ enter(); // required for proper stackwalking of RuntimeStub frame 3605 __ fast_tan(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp); 3606 __ leave(); // required for proper stackwalking of RuntimeStub frame 3607 __ ret(0); 3608 3609 return start; 3610 3611 } 3612 3613 // Safefetch stubs. 3614 void generate_safefetch(const char* name, int size, address* entry, 3615 address* fault_pc, address* continuation_pc) { 3616 // safefetch signatures: 3617 // int SafeFetch32(int* adr, int errValue); 3618 // intptr_t SafeFetchN (intptr_t* adr, intptr_t errValue); 3619 3620 StubCodeMark mark(this, "StubRoutines", name); 3621 3622 // Entry point, pc or function descriptor. 3623 *entry = __ pc(); 3624 3625 __ movl(rax, Address(rsp, 0x8)); 3626 __ movl(rcx, Address(rsp, 0x4)); 3627 // Load *adr into eax, may fault. 3628 *fault_pc = __ pc(); 3629 switch (size) { 3630 case 4: 3631 // int32_t 3632 __ movl(rax, Address(rcx, 0)); 3633 break; 3634 case 8: 3635 // int64_t 3636 Unimplemented(); 3637 break; 3638 default: 3639 ShouldNotReachHere(); 3640 } 3641 3642 // Return errValue or *adr. 3643 *continuation_pc = __ pc(); 3644 __ ret(0); 3645 } 3646 3647 public: 3648 // Information about frame layout at time of blocking runtime call. 3649 // Note that we only have to preserve callee-saved registers since 3650 // the compilers are responsible for supplying a continuation point 3651 // if they expect all registers to be preserved. 3652 enum layout { 3653 thread_off, // last_java_sp 3654 arg1_off, 3655 arg2_off, 3656 rbp_off, // callee saved register 3657 ret_pc, 3658 framesize 3659 }; 3660 3661 private: 3662 3663 #undef __ 3664 #define __ masm-> 3665 3666 //------------------------------------------------------------------------------------------------------------------------ 3667 // Continuation point for throwing of implicit exceptions that are not handled in 3668 // the current activation. Fabricates an exception oop and initiates normal 3669 // exception dispatching in this frame. 3670 // 3671 // Previously the compiler (c2) allowed for callee save registers on Java calls. 3672 // This is no longer true after adapter frames were removed but could possibly 3673 // be brought back in the future if the interpreter code was reworked and it 3674 // was deemed worthwhile. The comment below was left to describe what must 3675 // happen here if callee saves were resurrected. As it stands now this stub 3676 // could actually be a vanilla BufferBlob and have now oopMap at all. 3677 // Since it doesn't make much difference we've chosen to leave it the 3678 // way it was in the callee save days and keep the comment. 3679 3680 // If we need to preserve callee-saved values we need a callee-saved oop map and 3681 // therefore have to make these stubs into RuntimeStubs rather than BufferBlobs. 3682 // If the compiler needs all registers to be preserved between the fault 3683 // point and the exception handler then it must assume responsibility for that in 3684 // AbstractCompiler::continuation_for_implicit_null_exception or 3685 // continuation_for_implicit_division_by_zero_exception. All other implicit 3686 // exceptions (e.g., NullPointerException or AbstractMethodError on entry) are 3687 // either at call sites or otherwise assume that stack unwinding will be initiated, 3688 // so caller saved registers were assumed volatile in the compiler. 3689 address generate_throw_exception(const char* name, address runtime_entry, 3690 Register arg1 = noreg, Register arg2 = noreg) { 3691 3692 int insts_size = 256; 3693 int locs_size = 32; 3694 3695 CodeBuffer code(name, insts_size, locs_size); 3696 OopMapSet* oop_maps = new OopMapSet(); 3697 MacroAssembler* masm = new MacroAssembler(&code); 3698 3699 address start = __ pc(); 3700 3701 // This is an inlined and slightly modified version of call_VM 3702 // which has the ability to fetch the return PC out of 3703 // thread-local storage and also sets up last_Java_sp slightly 3704 // differently than the real call_VM 3705 Register java_thread = rbx; 3706 __ get_thread(java_thread); 3707 3708 __ enter(); // required for proper stackwalking of RuntimeStub frame 3709 3710 // pc and rbp, already pushed 3711 __ subptr(rsp, (framesize-2) * wordSize); // prolog 3712 3713 // Frame is now completed as far as size and linkage. 3714 3715 int frame_complete = __ pc() - start; 3716 3717 // push java thread (becomes first argument of C function) 3718 __ movptr(Address(rsp, thread_off * wordSize), java_thread); 3719 if (arg1 != noreg) { 3720 __ movptr(Address(rsp, arg1_off * wordSize), arg1); 3721 } 3722 if (arg2 != noreg) { 3723 assert(arg1 != noreg, "missing reg arg"); 3724 __ movptr(Address(rsp, arg2_off * wordSize), arg2); 3725 } 3726 3727 // Set up last_Java_sp and last_Java_fp 3728 __ set_last_Java_frame(java_thread, rsp, rbp, NULL); 3729 3730 // Call runtime 3731 BLOCK_COMMENT("call runtime_entry"); 3732 __ call(RuntimeAddress(runtime_entry)); 3733 // Generate oop map 3734 OopMap* map = new OopMap(framesize, 0); 3735 oop_maps->add_gc_map(__ pc() - start, map); 3736 3737 // restore the thread (cannot use the pushed argument since arguments 3738 // may be overwritten by C code generated by an optimizing compiler); 3739 // however can use the register value directly if it is callee saved. 3740 __ get_thread(java_thread); 3741 3742 __ reset_last_Java_frame(java_thread, true); 3743 3744 __ leave(); // required for proper stackwalking of RuntimeStub frame 3745 3746 // check for pending exceptions 3747 #ifdef ASSERT 3748 Label L; 3749 __ cmpptr(Address(java_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); 3750 __ jcc(Assembler::notEqual, L); 3751 __ should_not_reach_here(); 3752 __ bind(L); 3753 #endif /* ASSERT */ 3754 __ jump(RuntimeAddress(StubRoutines::forward_exception_entry())); 3755 3756 3757 RuntimeStub* stub = RuntimeStub::new_runtime_stub(name, &code, frame_complete, framesize, oop_maps, false); 3758 return stub->entry_point(); 3759 } 3760 3761 3762 void create_control_words() { 3763 // Round to nearest, 53-bit mode, exceptions masked 3764 StubRoutines::_fpu_cntrl_wrd_std = 0x027F; 3765 // Round to zero, 53-bit mode, exception mased 3766 StubRoutines::_fpu_cntrl_wrd_trunc = 0x0D7F; 3767 // Round to nearest, 24-bit mode, exceptions masked 3768 StubRoutines::_fpu_cntrl_wrd_24 = 0x007F; 3769 // Round to nearest, 64-bit mode, exceptions masked 3770 StubRoutines::_fpu_cntrl_wrd_64 = 0x037F; 3771 // Round to nearest, 64-bit mode, exceptions masked 3772 StubRoutines::_mxcsr_std = 0x1F80; 3773 // Note: the following two constants are 80-bit values 3774 // layout is critical for correct loading by FPU. 3775 // Bias for strict fp multiply/divide 3776 StubRoutines::_fpu_subnormal_bias1[0]= 0x00000000; // 2^(-15360) == 0x03ff 8000 0000 0000 0000 3777 StubRoutines::_fpu_subnormal_bias1[1]= 0x80000000; 3778 StubRoutines::_fpu_subnormal_bias1[2]= 0x03ff; 3779 // Un-Bias for strict fp multiply/divide 3780 StubRoutines::_fpu_subnormal_bias2[0]= 0x00000000; // 2^(+15360) == 0x7bff 8000 0000 0000 0000 3781 StubRoutines::_fpu_subnormal_bias2[1]= 0x80000000; 3782 StubRoutines::_fpu_subnormal_bias2[2]= 0x7bff; 3783 } 3784 3785 //--------------------------------------------------------------------------- 3786 // Initialization 3787 3788 void generate_initial() { 3789 // Generates all stubs and initializes the entry points 3790 3791 //------------------------------------------------------------------------------------------------------------------------ 3792 // entry points that exist in all platforms 3793 // Note: This is code that could be shared among different platforms - however the benefit seems to be smaller than 3794 // the disadvantage of having a much more complicated generator structure. See also comment in stubRoutines.hpp. 3795 StubRoutines::_forward_exception_entry = generate_forward_exception(); 3796 3797 StubRoutines::_call_stub_entry = 3798 generate_call_stub(StubRoutines::_call_stub_return_address); 3799 // is referenced by megamorphic call 3800 StubRoutines::_catch_exception_entry = generate_catch_exception(); 3801 3802 // These are currently used by Solaris/Intel 3803 StubRoutines::_atomic_xchg_entry = generate_atomic_xchg(); 3804 3805 // platform dependent 3806 create_control_words(); 3807 3808 StubRoutines::x86::_verify_mxcsr_entry = generate_verify_mxcsr(); 3809 StubRoutines::x86::_verify_fpu_cntrl_wrd_entry = generate_verify_fpu_cntrl_wrd(); 3810 StubRoutines::_d2i_wrapper = generate_d2i_wrapper(T_INT, 3811 CAST_FROM_FN_PTR(address, SharedRuntime::d2i)); 3812 StubRoutines::_d2l_wrapper = generate_d2i_wrapper(T_LONG, 3813 CAST_FROM_FN_PTR(address, SharedRuntime::d2l)); 3814 3815 // Build this early so it's available for the interpreter 3816 StubRoutines::_throw_StackOverflowError_entry = generate_throw_exception("StackOverflowError throw_exception", 3817 CAST_FROM_FN_PTR(address, SharedRuntime::throw_StackOverflowError)); 3818 StubRoutines::_throw_delayed_StackOverflowError_entry = generate_throw_exception("delayed StackOverflowError throw_exception", 3819 CAST_FROM_FN_PTR(address, SharedRuntime::throw_delayed_StackOverflowError)); 3820 3821 if (UseCRC32Intrinsics) { 3822 // set table address before stub generation which use it 3823 StubRoutines::_crc_table_adr = (address)StubRoutines::x86::_crc_table; 3824 StubRoutines::_updateBytesCRC32 = generate_updateBytesCRC32(); 3825 } 3826 3827 if (UseCRC32CIntrinsics) { 3828 bool supports_clmul = VM_Version::supports_clmul(); 3829 StubRoutines::x86::generate_CRC32C_table(supports_clmul); 3830 StubRoutines::_crc32c_table_addr = (address)StubRoutines::x86::_crc32c_table; 3831 StubRoutines::_updateBytesCRC32C = generate_updateBytesCRC32C(supports_clmul); 3832 } 3833 if (VM_Version::supports_sse2() && UseLibmIntrinsic && InlineIntrinsics) { 3834 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin) || 3835 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos) || 3836 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dtan)) { 3837 StubRoutines::x86::_L_2il0floatpacket_0_adr = (address)StubRoutines::x86::_L_2il0floatpacket_0; 3838 StubRoutines::x86::_Pi4Inv_adr = (address)StubRoutines::x86::_Pi4Inv; 3839 StubRoutines::x86::_Pi4x3_adr = (address)StubRoutines::x86::_Pi4x3; 3840 StubRoutines::x86::_Pi4x4_adr = (address)StubRoutines::x86::_Pi4x4; 3841 StubRoutines::x86::_ones_adr = (address)StubRoutines::x86::_ones; 3842 } 3843 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dexp)) { 3844 StubRoutines::_dexp = generate_libmExp(); 3845 } 3846 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dlog)) { 3847 StubRoutines::_dlog = generate_libmLog(); 3848 } 3849 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dlog10)) { 3850 StubRoutines::_dlog10 = generate_libmLog10(); 3851 } 3852 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dpow)) { 3853 StubRoutines::_dpow = generate_libmPow(); 3854 } 3855 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin) || 3856 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos) || 3857 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dtan)) { 3858 StubRoutines::_dlibm_reduce_pi04l = generate_libm_reduce_pi04l(); 3859 } 3860 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin) || 3861 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos)) { 3862 StubRoutines::_dlibm_sin_cos_huge = generate_libm_sin_cos_huge(); 3863 } 3864 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin)) { 3865 StubRoutines::_dsin = generate_libmSin(); 3866 } 3867 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos)) { 3868 StubRoutines::_dcos = generate_libmCos(); 3869 } 3870 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dtan)) { 3871 StubRoutines::_dlibm_tan_cot_huge = generate_libm_tan_cot_huge(); 3872 StubRoutines::_dtan = generate_libmTan(); 3873 } 3874 } 3875 } 3876 3877 void generate_all() { 3878 // Generates all stubs and initializes the entry points 3879 3880 // These entry points require SharedInfo::stack0 to be set up in non-core builds 3881 // and need to be relocatable, so they each fabricate a RuntimeStub internally. 3882 StubRoutines::_throw_AbstractMethodError_entry = generate_throw_exception("AbstractMethodError throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_AbstractMethodError)); 3883 StubRoutines::_throw_IncompatibleClassChangeError_entry= generate_throw_exception("IncompatibleClassChangeError throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_IncompatibleClassChangeError)); 3884 StubRoutines::_throw_NullPointerException_at_call_entry= generate_throw_exception("NullPointerException at call throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_NullPointerException_at_call)); 3885 3886 //------------------------------------------------------------------------------------------------------------------------ 3887 // entry points that are platform specific 3888 3889 // support for verify_oop (must happen after universe_init) 3890 StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop(); 3891 3892 // arraycopy stubs used by compilers 3893 generate_arraycopy_stubs(); 3894 3895 // don't bother generating these AES intrinsic stubs unless global flag is set 3896 if (UseAESIntrinsics) { 3897 StubRoutines::x86::_key_shuffle_mask_addr = generate_key_shuffle_mask(); // might be needed by the others 3898 3899 StubRoutines::_aescrypt_encryptBlock = generate_aescrypt_encryptBlock(); 3900 StubRoutines::_aescrypt_decryptBlock = generate_aescrypt_decryptBlock(); 3901 StubRoutines::_cipherBlockChaining_encryptAESCrypt = generate_cipherBlockChaining_encryptAESCrypt(); 3902 StubRoutines::_cipherBlockChaining_decryptAESCrypt = generate_cipherBlockChaining_decryptAESCrypt_Parallel(); 3903 } 3904 3905 if (UseAESCTRIntrinsics) { 3906 StubRoutines::x86::_counter_shuffle_mask_addr = generate_counter_shuffle_mask(); 3907 StubRoutines::_counterMode_AESCrypt = generate_counterMode_AESCrypt_Parallel(); 3908 } 3909 3910 if (UseSHA1Intrinsics) { 3911 StubRoutines::x86::_upper_word_mask_addr = generate_upper_word_mask(); 3912 StubRoutines::x86::_shuffle_byte_flip_mask_addr = generate_shuffle_byte_flip_mask(); 3913 StubRoutines::_sha1_implCompress = generate_sha1_implCompress(false, "sha1_implCompress"); 3914 StubRoutines::_sha1_implCompressMB = generate_sha1_implCompress(true, "sha1_implCompressMB"); 3915 } 3916 if (UseSHA256Intrinsics) { 3917 StubRoutines::x86::_k256_adr = (address)StubRoutines::x86::_k256; 3918 StubRoutines::x86::_pshuffle_byte_flip_mask_addr = generate_pshuffle_byte_flip_mask(); 3919 StubRoutines::_sha256_implCompress = generate_sha256_implCompress(false, "sha256_implCompress"); 3920 StubRoutines::_sha256_implCompressMB = generate_sha256_implCompress(true, "sha256_implCompressMB"); 3921 } 3922 3923 // Generate GHASH intrinsics code 3924 if (UseGHASHIntrinsics) { 3925 StubRoutines::x86::_ghash_long_swap_mask_addr = generate_ghash_long_swap_mask(); 3926 StubRoutines::x86::_ghash_byte_swap_mask_addr = generate_ghash_byte_swap_mask(); 3927 StubRoutines::_ghash_processBlocks = generate_ghash_processBlocks(); 3928 } 3929 3930 // Safefetch stubs. 3931 generate_safefetch("SafeFetch32", sizeof(int), &StubRoutines::_safefetch32_entry, 3932 &StubRoutines::_safefetch32_fault_pc, 3933 &StubRoutines::_safefetch32_continuation_pc); 3934 StubRoutines::_safefetchN_entry = StubRoutines::_safefetch32_entry; 3935 StubRoutines::_safefetchN_fault_pc = StubRoutines::_safefetch32_fault_pc; 3936 StubRoutines::_safefetchN_continuation_pc = StubRoutines::_safefetch32_continuation_pc; 3937 } 3938 3939 3940 public: 3941 StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) { 3942 if (all) { 3943 generate_all(); 3944 } else { 3945 generate_initial(); 3946 } 3947 } 3948 }; // end class declaration 3949 3950 3951 void StubGenerator_generate(CodeBuffer* code, bool all) { 3952 StubGenerator g(code, all); 3953 }