1 /*
   2  * Copyright (c) 2003, 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 "ci/ciUtilities.hpp"
  29 #include "gc/shared/barrierSet.hpp"
  30 #include "gc/shared/barrierSetAssembler.hpp"
  31 #include "gc/shared/barrierSetNMethod.hpp"
  32 #include "interpreter/interpreter.hpp"
  33 #include "nativeInst_x86.hpp"
  34 #include "oops/instanceOop.hpp"
  35 #include "oops/method.hpp"
  36 #include "oops/objArrayKlass.hpp"
  37 #include "oops/oop.inline.hpp"
  38 #include "prims/methodHandles.hpp"
  39 #include "runtime/frame.inline.hpp"
  40 #include "runtime/handles.inline.hpp"
  41 #include "runtime/sharedRuntime.hpp"
  42 #include "runtime/stubCodeGenerator.hpp"
  43 #include "runtime/stubRoutines.hpp"
  44 #include "runtime/thread.inline.hpp"
  45 #ifdef COMPILER2
  46 #include "opto/runtime.hpp"
  47 #endif
  48 #if INCLUDE_ZGC
  49 #include "gc/z/zThreadLocalData.hpp"
  50 #endif
  51 
  52 // Declaration and definition of StubGenerator (no .hpp file).
  53 // For a more detailed description of the stub routine structure
  54 // see the comment in stubRoutines.hpp
  55 
  56 #define __ _masm->
  57 #define TIMES_OOP (UseCompressedOops ? Address::times_4 : Address::times_8)
  58 #define a__ ((Assembler*)_masm)->
  59 
  60 #ifdef PRODUCT
  61 #define BLOCK_COMMENT(str) /* nothing */
  62 #else
  63 #define BLOCK_COMMENT(str) __ block_comment(str)
  64 #endif
  65 
  66 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
  67 const int MXCSR_MASK = 0xFFC0;  // Mask out any pending exceptions
  68 
  69 // Stub Code definitions
  70 
  71 class StubGenerator: public StubCodeGenerator {
  72  private:
  73 
  74 #ifdef PRODUCT
  75 #define inc_counter_np(counter) ((void)0)
  76 #else
  77   void inc_counter_np_(int& counter) {
  78     // This can destroy rscratch1 if counter is far from the code cache
  79     __ incrementl(ExternalAddress((address)&counter));
  80   }
  81 #define inc_counter_np(counter) \
  82   BLOCK_COMMENT("inc_counter " #counter); \
  83   inc_counter_np_(counter);
  84 #endif
  85 
  86   // Call stubs are used to call Java from C
  87   //
  88   // Linux Arguments:
  89   //    c_rarg0:   call wrapper address                   address
  90   //    c_rarg1:   result                                 address
  91   //    c_rarg2:   result type                            BasicType
  92   //    c_rarg3:   method                                 Method*
  93   //    c_rarg4:   (interpreter) entry point              address
  94   //    c_rarg5:   parameters                             intptr_t*
  95   //    16(rbp): parameter size (in words)              int
  96   //    24(rbp): thread                                 Thread*
  97   //
  98   //     [ return_from_Java     ] <--- rsp
  99   //     [ argument word n      ]
 100   //      ...
 101   // -12 [ argument word 1      ]
 102   // -11 [ saved r15            ] <--- rsp_after_call
 103   // -10 [ saved r14            ]
 104   //  -9 [ saved r13            ]
 105   //  -8 [ saved r12            ]
 106   //  -7 [ saved rbx            ]
 107   //  -6 [ call wrapper         ]
 108   //  -5 [ result               ]
 109   //  -4 [ result type          ]
 110   //  -3 [ method               ]
 111   //  -2 [ entry point          ]
 112   //  -1 [ parameters           ]
 113   //   0 [ saved rbp            ] <--- rbp
 114   //   1 [ return address       ]
 115   //   2 [ parameter size       ]
 116   //   3 [ thread               ]
 117   //
 118   // Windows Arguments:
 119   //    c_rarg0:   call wrapper address                   address
 120   //    c_rarg1:   result                                 address
 121   //    c_rarg2:   result type                            BasicType
 122   //    c_rarg3:   method                                 Method*
 123   //    48(rbp): (interpreter) entry point              address
 124   //    56(rbp): parameters                             intptr_t*
 125   //    64(rbp): parameter size (in words)              int
 126   //    72(rbp): thread                                 Thread*
 127   //
 128   //     [ return_from_Java     ] <--- rsp
 129   //     [ argument word n      ]
 130   //      ...
 131   // -60 [ argument word 1      ]
 132   // -59 [ saved xmm31          ] <--- rsp after_call
 133   //     [ saved xmm16-xmm30    ] (EVEX enabled, else the space is blank)
 134   // -27 [ saved xmm15          ]
 135   //     [ saved xmm7-xmm14     ]
 136   //  -9 [ saved xmm6           ] (each xmm register takes 2 slots)
 137   //  -7 [ saved r15            ]
 138   //  -6 [ saved r14            ]
 139   //  -5 [ saved r13            ]
 140   //  -4 [ saved r12            ]
 141   //  -3 [ saved rdi            ]
 142   //  -2 [ saved rsi            ]
 143   //  -1 [ saved rbx            ]
 144   //   0 [ saved rbp            ] <--- rbp
 145   //   1 [ return address       ]
 146   //   2 [ call wrapper         ]
 147   //   3 [ result               ]
 148   //   4 [ result type          ]
 149   //   5 [ method               ]
 150   //   6 [ entry point          ]
 151   //   7 [ parameters           ]
 152   //   8 [ parameter size       ]
 153   //   9 [ thread               ]
 154   //
 155   //    Windows reserves the callers stack space for arguments 1-4.
 156   //    We spill c_rarg0-c_rarg3 to this space.
 157 
 158   // Call stub stack layout word offsets from rbp
 159   enum call_stub_layout {
 160 #ifdef _WIN64
 161     xmm_save_first     = 6,  // save from xmm6
 162     xmm_save_last      = 31, // to xmm31
 163     xmm_save_base      = -9,
 164     rsp_after_call_off = xmm_save_base - 2 * (xmm_save_last - xmm_save_first), // -27
 165     r15_off            = -7,
 166     r14_off            = -6,
 167     r13_off            = -5,
 168     r12_off            = -4,
 169     rdi_off            = -3,
 170     rsi_off            = -2,
 171     rbx_off            = -1,
 172     rbp_off            =  0,
 173     retaddr_off        =  1,
 174     call_wrapper_off   =  2,
 175     result_off         =  3,
 176     result_type_off    =  4,
 177     method_off         =  5,
 178     entry_point_off    =  6,
 179     parameters_off     =  7,
 180     parameter_size_off =  8,
 181     thread_off         =  9
 182 #else
 183     rsp_after_call_off = -12,
 184     mxcsr_off          = rsp_after_call_off,
 185     r15_off            = -11,
 186     r14_off            = -10,
 187     r13_off            = -9,
 188     r12_off            = -8,
 189     rbx_off            = -7,
 190     call_wrapper_off   = -6,
 191     result_off         = -5,
 192     result_type_off    = -4,
 193     method_off         = -3,
 194     entry_point_off    = -2,
 195     parameters_off     = -1,
 196     rbp_off            =  0,
 197     retaddr_off        =  1,
 198     parameter_size_off =  2,
 199     thread_off         =  3
 200 #endif
 201   };
 202 
 203 #ifdef _WIN64
 204   Address xmm_save(int reg) {
 205     assert(reg >= xmm_save_first && reg <= xmm_save_last, "XMM register number out of range");
 206     return Address(rbp, (xmm_save_base - (reg - xmm_save_first) * 2) * wordSize);
 207   }
 208 #endif
 209 
 210   address generate_call_stub(address& return_address) {
 211     assert((int)frame::entry_frame_after_call_words == -(int)rsp_after_call_off + 1 &&
 212            (int)frame::entry_frame_call_wrapper_offset == (int)call_wrapper_off,
 213            "adjust this code");
 214     StubCodeMark mark(this, "StubRoutines", "call_stub");
 215     address start = __ pc();
 216 
 217     // same as in generate_catch_exception()!
 218     const Address rsp_after_call(rbp, rsp_after_call_off * wordSize);
 219 
 220     const Address call_wrapper  (rbp, call_wrapper_off   * wordSize);
 221     const Address result        (rbp, result_off         * wordSize);
 222     const Address result_type   (rbp, result_type_off    * wordSize);
 223     const Address method        (rbp, method_off         * wordSize);
 224     const Address entry_point   (rbp, entry_point_off    * wordSize);
 225     const Address parameters    (rbp, parameters_off     * wordSize);
 226     const Address parameter_size(rbp, parameter_size_off * wordSize);
 227 
 228     // same as in generate_catch_exception()!
 229     const Address thread        (rbp, thread_off         * wordSize);
 230 
 231     const Address r15_save(rbp, r15_off * wordSize);
 232     const Address r14_save(rbp, r14_off * wordSize);
 233     const Address r13_save(rbp, r13_off * wordSize);
 234     const Address r12_save(rbp, r12_off * wordSize);
 235     const Address rbx_save(rbp, rbx_off * wordSize);
 236 
 237     // stub code
 238     __ enter();
 239     __ subptr(rsp, -rsp_after_call_off * wordSize);
 240 
 241     // save register parameters
 242 #ifndef _WIN64
 243     __ movptr(parameters,   c_rarg5); // parameters
 244     __ movptr(entry_point,  c_rarg4); // entry_point
 245 #endif
 246 
 247     __ movptr(method,       c_rarg3); // method
 248     __ movl(result_type,  c_rarg2);   // result type
 249     __ movptr(result,       c_rarg1); // result
 250     __ movptr(call_wrapper, c_rarg0); // call wrapper
 251 
 252     // save regs belonging to calling function
 253     __ movptr(rbx_save, rbx);
 254     __ movptr(r12_save, r12);
 255     __ movptr(r13_save, r13);
 256     __ movptr(r14_save, r14);
 257     __ movptr(r15_save, r15);
 258 
 259 #ifdef _WIN64
 260     int last_reg = 15;
 261     if (UseAVX > 2) {
 262       last_reg = 31;
 263     }
 264     if (VM_Version::supports_evex()) {
 265       for (int i = xmm_save_first; i <= last_reg; i++) {
 266         __ vextractf32x4(xmm_save(i), as_XMMRegister(i), 0);
 267       }
 268     } else {
 269       for (int i = xmm_save_first; i <= last_reg; i++) {
 270         __ movdqu(xmm_save(i), as_XMMRegister(i));
 271       }
 272     }
 273 
 274     const Address rdi_save(rbp, rdi_off * wordSize);
 275     const Address rsi_save(rbp, rsi_off * wordSize);
 276 
 277     __ movptr(rsi_save, rsi);
 278     __ movptr(rdi_save, rdi);
 279 #else
 280     const Address mxcsr_save(rbp, mxcsr_off * wordSize);
 281     {
 282       Label skip_ldmx;
 283       __ stmxcsr(mxcsr_save);
 284       __ movl(rax, mxcsr_save);
 285       __ andl(rax, MXCSR_MASK);    // Only check control and mask bits
 286       ExternalAddress mxcsr_std(StubRoutines::addr_mxcsr_std());
 287       __ cmp32(rax, mxcsr_std);
 288       __ jcc(Assembler::equal, skip_ldmx);
 289       __ ldmxcsr(mxcsr_std);
 290       __ bind(skip_ldmx);
 291     }
 292 #endif
 293 
 294     // Load up thread register
 295     __ movptr(r15_thread, thread);
 296     __ reinit_heapbase();
 297 
 298 #ifdef ASSERT
 299     // make sure we have no pending exceptions
 300     {
 301       Label L;
 302       __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD);
 303       __ jcc(Assembler::equal, L);
 304       __ stop("StubRoutines::call_stub: entered with pending exception");
 305       __ bind(L);
 306     }
 307 #endif
 308 
 309     // pass parameters if any
 310     BLOCK_COMMENT("pass parameters if any");
 311     Label parameters_done;
 312     __ movl(c_rarg3, parameter_size);
 313     __ testl(c_rarg3, c_rarg3);
 314     __ jcc(Assembler::zero, parameters_done);
 315 
 316     Label loop;
 317     __ movptr(c_rarg2, parameters);       // parameter pointer
 318     __ movl(c_rarg1, c_rarg3);            // parameter counter is in c_rarg1
 319     __ BIND(loop);
 320     __ movptr(rax, Address(c_rarg2, 0));// get parameter
 321     __ addptr(c_rarg2, wordSize);       // advance to next parameter
 322     __ decrementl(c_rarg1);             // decrement counter
 323     __ push(rax);                       // pass parameter
 324     __ jcc(Assembler::notZero, loop);
 325 
 326     // call Java function
 327     __ BIND(parameters_done);
 328     __ movptr(rbx, method);             // get Method*
 329     __ movptr(c_rarg1, entry_point);    // get entry_point
 330     __ mov(r13, rsp);                   // set sender sp
 331     BLOCK_COMMENT("call Java function");
 332     __ call(c_rarg1);
 333 
 334     BLOCK_COMMENT("call_stub_return_address:");
 335     return_address = __ pc();
 336 
 337     // store result depending on type (everything that is not
 338     // T_OBJECT, T_LONG, T_FLOAT or T_DOUBLE is treated as T_INT)
 339     __ movptr(c_rarg0, result);
 340     Label is_long, is_float, is_double, exit;
 341     __ movl(c_rarg1, result_type);
 342     __ cmpl(c_rarg1, T_OBJECT);
 343     __ jcc(Assembler::equal, is_long);
 344     __ cmpl(c_rarg1, T_LONG);
 345     __ jcc(Assembler::equal, is_long);
 346     __ cmpl(c_rarg1, T_FLOAT);
 347     __ jcc(Assembler::equal, is_float);
 348     __ cmpl(c_rarg1, T_DOUBLE);
 349     __ jcc(Assembler::equal, is_double);
 350 
 351     // handle T_INT case
 352     __ movl(Address(c_rarg0, 0), rax);
 353 
 354     __ BIND(exit);
 355 
 356     // pop parameters
 357     __ lea(rsp, rsp_after_call);
 358 
 359 #ifdef ASSERT
 360     // verify that threads correspond
 361     {
 362      Label L1, L2, L3;
 363       __ cmpptr(r15_thread, thread);
 364       __ jcc(Assembler::equal, L1);
 365       __ stop("StubRoutines::call_stub: r15_thread is corrupted");
 366       __ bind(L1);
 367       __ get_thread(rbx);
 368       __ cmpptr(r15_thread, thread);
 369       __ jcc(Assembler::equal, L2);
 370       __ stop("StubRoutines::call_stub: r15_thread is modified by call");
 371       __ bind(L2);
 372       __ cmpptr(r15_thread, rbx);
 373       __ jcc(Assembler::equal, L3);
 374       __ stop("StubRoutines::call_stub: threads must correspond");
 375       __ bind(L3);
 376     }
 377 #endif
 378 
 379     // restore regs belonging to calling function
 380 #ifdef _WIN64
 381     // emit the restores for xmm regs
 382     if (VM_Version::supports_evex()) {
 383       for (int i = xmm_save_first; i <= last_reg; i++) {
 384         __ vinsertf32x4(as_XMMRegister(i), as_XMMRegister(i), xmm_save(i), 0);
 385       }
 386     } else {
 387       for (int i = xmm_save_first; i <= last_reg; i++) {
 388         __ movdqu(as_XMMRegister(i), xmm_save(i));
 389       }
 390     }
 391 #endif
 392     __ movptr(r15, r15_save);
 393     __ movptr(r14, r14_save);
 394     __ movptr(r13, r13_save);
 395     __ movptr(r12, r12_save);
 396     __ movptr(rbx, rbx_save);
 397 
 398 #ifdef _WIN64
 399     __ movptr(rdi, rdi_save);
 400     __ movptr(rsi, rsi_save);
 401 #else
 402     __ ldmxcsr(mxcsr_save);
 403 #endif
 404 
 405     // restore rsp
 406     __ addptr(rsp, -rsp_after_call_off * wordSize);
 407 
 408     // return
 409     __ vzeroupper();
 410     __ pop(rbp);
 411     __ ret(0);
 412 
 413     // handle return types different from T_INT
 414     __ BIND(is_long);
 415     __ movq(Address(c_rarg0, 0), rax);
 416     __ jmp(exit);
 417 
 418     __ BIND(is_float);
 419     __ movflt(Address(c_rarg0, 0), xmm0);
 420     __ jmp(exit);
 421 
 422     __ BIND(is_double);
 423     __ movdbl(Address(c_rarg0, 0), xmm0);
 424     __ jmp(exit);
 425 
 426     return start;
 427   }
 428 
 429   // Return point for a Java call if there's an exception thrown in
 430   // Java code.  The exception is caught and transformed into a
 431   // pending exception stored in JavaThread that can be tested from
 432   // within the VM.
 433   //
 434   // Note: Usually the parameters are removed by the callee. In case
 435   // of an exception crossing an activation frame boundary, that is
 436   // not the case if the callee is compiled code => need to setup the
 437   // rsp.
 438   //
 439   // rax: exception oop
 440 
 441   address generate_catch_exception() {
 442     StubCodeMark mark(this, "StubRoutines", "catch_exception");
 443     address start = __ pc();
 444 
 445     // same as in generate_call_stub():
 446     const Address rsp_after_call(rbp, rsp_after_call_off * wordSize);
 447     const Address thread        (rbp, thread_off         * wordSize);
 448 
 449 #ifdef ASSERT
 450     // verify that threads correspond
 451     {
 452       Label L1, L2, L3;
 453       __ cmpptr(r15_thread, thread);
 454       __ jcc(Assembler::equal, L1);
 455       __ stop("StubRoutines::catch_exception: r15_thread is corrupted");
 456       __ bind(L1);
 457       __ get_thread(rbx);
 458       __ cmpptr(r15_thread, thread);
 459       __ jcc(Assembler::equal, L2);
 460       __ stop("StubRoutines::catch_exception: r15_thread is modified by call");
 461       __ bind(L2);
 462       __ cmpptr(r15_thread, rbx);
 463       __ jcc(Assembler::equal, L3);
 464       __ stop("StubRoutines::catch_exception: threads must correspond");
 465       __ bind(L3);
 466     }
 467 #endif
 468 
 469     // set pending exception
 470     __ verify_oop(rax);
 471 
 472     __ movptr(Address(r15_thread, Thread::pending_exception_offset()), rax);
 473     __ lea(rscratch1, ExternalAddress((address)__FILE__));
 474     __ movptr(Address(r15_thread, Thread::exception_file_offset()), rscratch1);
 475     __ movl(Address(r15_thread, Thread::exception_line_offset()), (int)  __LINE__);
 476 
 477     // complete return to VM
 478     assert(StubRoutines::_call_stub_return_address != NULL,
 479            "_call_stub_return_address must have been generated before");
 480     __ jump(RuntimeAddress(StubRoutines::_call_stub_return_address));
 481 
 482     return start;
 483   }
 484 
 485   // Continuation point for runtime calls returning with a pending
 486   // exception.  The pending exception check happened in the runtime
 487   // or native call stub.  The pending exception in Thread is
 488   // converted into a Java-level exception.
 489   //
 490   // Contract with Java-level exception handlers:
 491   // rax: exception
 492   // rdx: throwing pc
 493   //
 494   // NOTE: At entry of this stub, exception-pc must be on stack !!
 495 
 496   address generate_forward_exception() {
 497     StubCodeMark mark(this, "StubRoutines", "forward exception");
 498     address start = __ pc();
 499 
 500     // Upon entry, the sp points to the return address returning into
 501     // Java (interpreted or compiled) code; i.e., the return address
 502     // becomes the throwing pc.
 503     //
 504     // Arguments pushed before the runtime call are still on the stack
 505     // but the exception handler will reset the stack pointer ->
 506     // ignore them.  A potential result in registers can be ignored as
 507     // well.
 508 
 509 #ifdef ASSERT
 510     // make sure this code is only executed if there is a pending exception
 511     {
 512       Label L;
 513       __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL);
 514       __ jcc(Assembler::notEqual, L);
 515       __ stop("StubRoutines::forward exception: no pending exception (1)");
 516       __ bind(L);
 517     }
 518 #endif
 519 
 520     // compute exception handler into rbx
 521     __ movptr(c_rarg0, Address(rsp, 0));
 522     BLOCK_COMMENT("call exception_handler_for_return_address");
 523     __ call_VM_leaf(CAST_FROM_FN_PTR(address,
 524                          SharedRuntime::exception_handler_for_return_address),
 525                     r15_thread, c_rarg0);
 526     __ mov(rbx, rax);
 527 
 528     // setup rax & rdx, remove return address & clear pending exception
 529     __ pop(rdx);
 530     __ movptr(rax, Address(r15_thread, Thread::pending_exception_offset()));
 531     __ movptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD);
 532 
 533 #ifdef ASSERT
 534     // make sure exception is set
 535     {
 536       Label L;
 537       __ testptr(rax, rax);
 538       __ jcc(Assembler::notEqual, L);
 539       __ stop("StubRoutines::forward exception: no pending exception (2)");
 540       __ bind(L);
 541     }
 542 #endif
 543 
 544     // continue at exception handler (return address removed)
 545     // rax: exception
 546     // rbx: exception handler
 547     // rdx: throwing pc
 548     __ verify_oop(rax);
 549     __ jmp(rbx);
 550 
 551     return start;
 552   }
 553 
 554   // Support for jint atomic::xchg(jint exchange_value, volatile jint* dest)
 555   //
 556   // Arguments :
 557   //    c_rarg0: exchange_value
 558   //    c_rarg0: dest
 559   //
 560   // Result:
 561   //    *dest <- ex, return (orig *dest)
 562   address generate_atomic_xchg() {
 563     StubCodeMark mark(this, "StubRoutines", "atomic_xchg");
 564     address start = __ pc();
 565 
 566     __ movl(rax, c_rarg0); // Copy to eax we need a return value anyhow
 567     __ xchgl(rax, Address(c_rarg1, 0)); // automatic LOCK
 568     __ ret(0);
 569 
 570     return start;
 571   }
 572 
 573   // Support for intptr_t atomic::xchg_long(jlong exchange_value, volatile jlong* dest)
 574   //
 575   // Arguments :
 576   //    c_rarg0: exchange_value
 577   //    c_rarg1: dest
 578   //
 579   // Result:
 580   //    *dest <- ex, return (orig *dest)
 581   address generate_atomic_xchg_long() {
 582     StubCodeMark mark(this, "StubRoutines", "atomic_xchg_long");
 583     address start = __ pc();
 584 
 585     __ movptr(rax, c_rarg0); // Copy to eax we need a return value anyhow
 586     __ xchgptr(rax, Address(c_rarg1, 0)); // automatic LOCK
 587     __ ret(0);
 588 
 589     return start;
 590   }
 591 
 592   // Support for jint atomic::atomic_cmpxchg(jint exchange_value, volatile jint* dest,
 593   //                                         jint compare_value)
 594   //
 595   // Arguments :
 596   //    c_rarg0: exchange_value
 597   //    c_rarg1: dest
 598   //    c_rarg2: compare_value
 599   //
 600   // Result:
 601   //    if ( compare_value == *dest ) {
 602   //       *dest = exchange_value
 603   //       return compare_value;
 604   //    else
 605   //       return *dest;
 606   address generate_atomic_cmpxchg() {
 607     StubCodeMark mark(this, "StubRoutines", "atomic_cmpxchg");
 608     address start = __ pc();
 609 
 610     __ movl(rax, c_rarg2);
 611     __ lock();
 612     __ cmpxchgl(c_rarg0, Address(c_rarg1, 0));
 613     __ ret(0);
 614 
 615     return start;
 616   }
 617 
 618   // Support for int8_t atomic::atomic_cmpxchg(int8_t exchange_value, volatile int8_t* dest,
 619   //                                           int8_t compare_value)
 620   //
 621   // Arguments :
 622   //    c_rarg0: exchange_value
 623   //    c_rarg1: dest
 624   //    c_rarg2: compare_value
 625   //
 626   // Result:
 627   //    if ( compare_value == *dest ) {
 628   //       *dest = exchange_value
 629   //       return compare_value;
 630   //    else
 631   //       return *dest;
 632   address generate_atomic_cmpxchg_byte() {
 633     StubCodeMark mark(this, "StubRoutines", "atomic_cmpxchg_byte");
 634     address start = __ pc();
 635 
 636     __ movsbq(rax, c_rarg2);
 637     __ lock();
 638     __ cmpxchgb(c_rarg0, Address(c_rarg1, 0));
 639     __ ret(0);
 640 
 641     return start;
 642   }
 643 
 644   // Support for int64_t atomic::atomic_cmpxchg(int64_t exchange_value,
 645   //                                            volatile int64_t* dest,
 646   //                                            int64_t compare_value)
 647   // Arguments :
 648   //    c_rarg0: exchange_value
 649   //    c_rarg1: dest
 650   //    c_rarg2: compare_value
 651   //
 652   // Result:
 653   //    if ( compare_value == *dest ) {
 654   //       *dest = exchange_value
 655   //       return compare_value;
 656   //    else
 657   //       return *dest;
 658   address generate_atomic_cmpxchg_long() {
 659     StubCodeMark mark(this, "StubRoutines", "atomic_cmpxchg_long");
 660     address start = __ pc();
 661 
 662     __ movq(rax, c_rarg2);
 663     __ lock();
 664     __ cmpxchgq(c_rarg0, Address(c_rarg1, 0));
 665     __ ret(0);
 666 
 667     return start;
 668   }
 669 
 670   // Support for jint atomic::add(jint add_value, volatile jint* dest)
 671   //
 672   // Arguments :
 673   //    c_rarg0: add_value
 674   //    c_rarg1: dest
 675   //
 676   // Result:
 677   //    *dest += add_value
 678   //    return *dest;
 679   address generate_atomic_add() {
 680     StubCodeMark mark(this, "StubRoutines", "atomic_add");
 681     address start = __ pc();
 682 
 683     __ movl(rax, c_rarg0);
 684     __ lock();
 685     __ xaddl(Address(c_rarg1, 0), c_rarg0);
 686     __ addl(rax, c_rarg0);
 687     __ ret(0);
 688 
 689     return start;
 690   }
 691 
 692   // Support for intptr_t atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest)
 693   //
 694   // Arguments :
 695   //    c_rarg0: add_value
 696   //    c_rarg1: dest
 697   //
 698   // Result:
 699   //    *dest += add_value
 700   //    return *dest;
 701   address generate_atomic_add_long() {
 702     StubCodeMark mark(this, "StubRoutines", "atomic_add_long");
 703     address start = __ pc();
 704 
 705     __ movptr(rax, c_rarg0); // Copy to eax we need a return value anyhow
 706     __ lock();
 707     __ xaddptr(Address(c_rarg1, 0), c_rarg0);
 708     __ addptr(rax, c_rarg0);
 709     __ ret(0);
 710 
 711     return start;
 712   }
 713 
 714   // Support for intptr_t OrderAccess::fence()
 715   //
 716   // Arguments :
 717   //
 718   // Result:
 719   address generate_orderaccess_fence() {
 720     StubCodeMark mark(this, "StubRoutines", "orderaccess_fence");
 721     address start = __ pc();
 722     __ membar(Assembler::StoreLoad);
 723     __ ret(0);
 724 
 725     return start;
 726   }
 727 
 728   // Support for intptr_t get_previous_fp()
 729   //
 730   // This routine is used to find the previous frame pointer for the
 731   // caller (current_frame_guess). This is used as part of debugging
 732   // ps() is seemingly lost trying to find frames.
 733   // This code assumes that caller current_frame_guess) has a frame.
 734   address generate_get_previous_fp() {
 735     StubCodeMark mark(this, "StubRoutines", "get_previous_fp");
 736     const Address old_fp(rbp, 0);
 737     const Address older_fp(rax, 0);
 738     address start = __ pc();
 739 
 740     __ enter();
 741     __ movptr(rax, old_fp); // callers fp
 742     __ movptr(rax, older_fp); // the frame for ps()
 743     __ pop(rbp);
 744     __ ret(0);
 745 
 746     return start;
 747   }
 748 
 749   // Support for intptr_t get_previous_sp()
 750   //
 751   // This routine is used to find the previous stack pointer for the
 752   // caller.
 753   address generate_get_previous_sp() {
 754     StubCodeMark mark(this, "StubRoutines", "get_previous_sp");
 755     address start = __ pc();
 756 
 757     __ movptr(rax, rsp);
 758     __ addptr(rax, 8); // return address is at the top of the stack.
 759     __ ret(0);
 760 
 761     return start;
 762   }
 763 
 764   //----------------------------------------------------------------------------------------------------
 765   // Support for void verify_mxcsr()
 766   //
 767   // This routine is used with -Xcheck:jni to verify that native
 768   // JNI code does not return to Java code without restoring the
 769   // MXCSR register to our expected state.
 770 
 771   address generate_verify_mxcsr() {
 772     StubCodeMark mark(this, "StubRoutines", "verify_mxcsr");
 773     address start = __ pc();
 774 
 775     const Address mxcsr_save(rsp, 0);
 776 
 777     if (CheckJNICalls) {
 778       Label ok_ret;
 779       ExternalAddress mxcsr_std(StubRoutines::addr_mxcsr_std());
 780       __ push(rax);
 781       __ subptr(rsp, wordSize);      // allocate a temp location
 782       __ stmxcsr(mxcsr_save);
 783       __ movl(rax, mxcsr_save);
 784       __ andl(rax, MXCSR_MASK);    // Only check control and mask bits
 785       __ cmp32(rax, mxcsr_std);
 786       __ jcc(Assembler::equal, ok_ret);
 787 
 788       __ warn("MXCSR changed by native JNI code, use -XX:+RestoreMXCSROnJNICall");
 789 
 790       __ ldmxcsr(mxcsr_std);
 791 
 792       __ bind(ok_ret);
 793       __ addptr(rsp, wordSize);
 794       __ pop(rax);
 795     }
 796 
 797     __ ret(0);
 798 
 799     return start;
 800   }
 801 
 802   address generate_f2i_fixup() {
 803     StubCodeMark mark(this, "StubRoutines", "f2i_fixup");
 804     Address inout(rsp, 5 * wordSize); // return address + 4 saves
 805 
 806     address start = __ pc();
 807 
 808     Label L;
 809 
 810     __ push(rax);
 811     __ push(c_rarg3);
 812     __ push(c_rarg2);
 813     __ push(c_rarg1);
 814 
 815     __ movl(rax, 0x7f800000);
 816     __ xorl(c_rarg3, c_rarg3);
 817     __ movl(c_rarg2, inout);
 818     __ movl(c_rarg1, c_rarg2);
 819     __ andl(c_rarg1, 0x7fffffff);
 820     __ cmpl(rax, c_rarg1); // NaN? -> 0
 821     __ jcc(Assembler::negative, L);
 822     __ testl(c_rarg2, c_rarg2); // signed ? min_jint : max_jint
 823     __ movl(c_rarg3, 0x80000000);
 824     __ movl(rax, 0x7fffffff);
 825     __ cmovl(Assembler::positive, c_rarg3, rax);
 826 
 827     __ bind(L);
 828     __ movptr(inout, c_rarg3);
 829 
 830     __ pop(c_rarg1);
 831     __ pop(c_rarg2);
 832     __ pop(c_rarg3);
 833     __ pop(rax);
 834 
 835     __ ret(0);
 836 
 837     return start;
 838   }
 839 
 840   address generate_f2l_fixup() {
 841     StubCodeMark mark(this, "StubRoutines", "f2l_fixup");
 842     Address inout(rsp, 5 * wordSize); // return address + 4 saves
 843     address start = __ pc();
 844 
 845     Label L;
 846 
 847     __ push(rax);
 848     __ push(c_rarg3);
 849     __ push(c_rarg2);
 850     __ push(c_rarg1);
 851 
 852     __ movl(rax, 0x7f800000);
 853     __ xorl(c_rarg3, c_rarg3);
 854     __ movl(c_rarg2, inout);
 855     __ movl(c_rarg1, c_rarg2);
 856     __ andl(c_rarg1, 0x7fffffff);
 857     __ cmpl(rax, c_rarg1); // NaN? -> 0
 858     __ jcc(Assembler::negative, L);
 859     __ testl(c_rarg2, c_rarg2); // signed ? min_jlong : max_jlong
 860     __ mov64(c_rarg3, 0x8000000000000000);
 861     __ mov64(rax, 0x7fffffffffffffff);
 862     __ cmov(Assembler::positive, c_rarg3, rax);
 863 
 864     __ bind(L);
 865     __ movptr(inout, c_rarg3);
 866 
 867     __ pop(c_rarg1);
 868     __ pop(c_rarg2);
 869     __ pop(c_rarg3);
 870     __ pop(rax);
 871 
 872     __ ret(0);
 873 
 874     return start;
 875   }
 876 
 877   address generate_d2i_fixup() {
 878     StubCodeMark mark(this, "StubRoutines", "d2i_fixup");
 879     Address inout(rsp, 6 * wordSize); // return address + 5 saves
 880 
 881     address start = __ pc();
 882 
 883     Label L;
 884 
 885     __ push(rax);
 886     __ push(c_rarg3);
 887     __ push(c_rarg2);
 888     __ push(c_rarg1);
 889     __ push(c_rarg0);
 890 
 891     __ movl(rax, 0x7ff00000);
 892     __ movq(c_rarg2, inout);
 893     __ movl(c_rarg3, c_rarg2);
 894     __ mov(c_rarg1, c_rarg2);
 895     __ mov(c_rarg0, c_rarg2);
 896     __ negl(c_rarg3);
 897     __ shrptr(c_rarg1, 0x20);
 898     __ orl(c_rarg3, c_rarg2);
 899     __ andl(c_rarg1, 0x7fffffff);
 900     __ xorl(c_rarg2, c_rarg2);
 901     __ shrl(c_rarg3, 0x1f);
 902     __ orl(c_rarg1, c_rarg3);
 903     __ cmpl(rax, c_rarg1);
 904     __ jcc(Assembler::negative, L); // NaN -> 0
 905     __ testptr(c_rarg0, c_rarg0); // signed ? min_jint : max_jint
 906     __ movl(c_rarg2, 0x80000000);
 907     __ movl(rax, 0x7fffffff);
 908     __ cmov(Assembler::positive, c_rarg2, rax);
 909 
 910     __ bind(L);
 911     __ movptr(inout, c_rarg2);
 912 
 913     __ pop(c_rarg0);
 914     __ pop(c_rarg1);
 915     __ pop(c_rarg2);
 916     __ pop(c_rarg3);
 917     __ pop(rax);
 918 
 919     __ ret(0);
 920 
 921     return start;
 922   }
 923 
 924   address generate_d2l_fixup() {
 925     StubCodeMark mark(this, "StubRoutines", "d2l_fixup");
 926     Address inout(rsp, 6 * wordSize); // return address + 5 saves
 927 
 928     address start = __ pc();
 929 
 930     Label L;
 931 
 932     __ push(rax);
 933     __ push(c_rarg3);
 934     __ push(c_rarg2);
 935     __ push(c_rarg1);
 936     __ push(c_rarg0);
 937 
 938     __ movl(rax, 0x7ff00000);
 939     __ movq(c_rarg2, inout);
 940     __ movl(c_rarg3, c_rarg2);
 941     __ mov(c_rarg1, c_rarg2);
 942     __ mov(c_rarg0, c_rarg2);
 943     __ negl(c_rarg3);
 944     __ shrptr(c_rarg1, 0x20);
 945     __ orl(c_rarg3, c_rarg2);
 946     __ andl(c_rarg1, 0x7fffffff);
 947     __ xorl(c_rarg2, c_rarg2);
 948     __ shrl(c_rarg3, 0x1f);
 949     __ orl(c_rarg1, c_rarg3);
 950     __ cmpl(rax, c_rarg1);
 951     __ jcc(Assembler::negative, L); // NaN -> 0
 952     __ testq(c_rarg0, c_rarg0); // signed ? min_jlong : max_jlong
 953     __ mov64(c_rarg2, 0x8000000000000000);
 954     __ mov64(rax, 0x7fffffffffffffff);
 955     __ cmovq(Assembler::positive, c_rarg2, rax);
 956 
 957     __ bind(L);
 958     __ movq(inout, c_rarg2);
 959 
 960     __ pop(c_rarg0);
 961     __ pop(c_rarg1);
 962     __ pop(c_rarg2);
 963     __ pop(c_rarg3);
 964     __ pop(rax);
 965 
 966     __ ret(0);
 967 
 968     return start;
 969   }
 970 
 971   address generate_fp_mask(const char *stub_name, int64_t mask) {
 972     __ align(CodeEntryAlignment);
 973     StubCodeMark mark(this, "StubRoutines", stub_name);
 974     address start = __ pc();
 975 
 976     __ emit_data64( mask, relocInfo::none );
 977     __ emit_data64( mask, relocInfo::none );
 978 
 979     return start;
 980   }
 981 
 982   // Non-destructive plausibility checks for oops
 983   //
 984   // Arguments:
 985   //    all args on stack!
 986   //
 987   // Stack after saving c_rarg3:
 988   //    [tos + 0]: saved c_rarg3
 989   //    [tos + 1]: saved c_rarg2
 990   //    [tos + 2]: saved r12 (several TemplateTable methods use it)
 991   //    [tos + 3]: saved flags
 992   //    [tos + 4]: return address
 993   //  * [tos + 5]: error message (char*)
 994   //  * [tos + 6]: object to verify (oop)
 995   //  * [tos + 7]: saved rax - saved by caller and bashed
 996   //  * [tos + 8]: saved r10 (rscratch1) - saved by caller
 997   //  * = popped on exit
 998   address generate_verify_oop() {
 999     StubCodeMark mark(this, "StubRoutines", "verify_oop");
1000     address start = __ pc();
1001 
1002     Label exit, error;
1003 
1004     __ pushf();
1005     __ incrementl(ExternalAddress((address) StubRoutines::verify_oop_count_addr()));
1006 
1007     __ push(r12);
1008 
1009     // save c_rarg2 and c_rarg3
1010     __ push(c_rarg2);
1011     __ push(c_rarg3);
1012 
1013     enum {
1014            // After previous pushes.
1015            oop_to_verify = 6 * wordSize,
1016            saved_rax     = 7 * wordSize,
1017            saved_r10     = 8 * wordSize,
1018 
1019            // Before the call to MacroAssembler::debug(), see below.
1020            return_addr   = 16 * wordSize,
1021            error_msg     = 17 * wordSize
1022     };
1023 
1024     // get object
1025     __ movptr(rax, Address(rsp, oop_to_verify));
1026 
1027     // make sure object is 'reasonable'
1028     __ testptr(rax, rax);
1029     __ jcc(Assembler::zero, exit); // if obj is NULL it is OK
1030 
1031 #if INCLUDE_ZGC
1032     if (UseZGC) {
1033       // Check if metadata bits indicate a bad oop
1034       __ testptr(rax, Address(r15_thread, ZThreadLocalData::address_bad_mask_offset()));
1035       __ jcc(Assembler::notZero, error);
1036     }
1037 #endif
1038 
1039     // Check if the oop is in the right area of memory
1040     __ movptr(c_rarg2, rax);
1041     __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_mask());
1042     __ andptr(c_rarg2, c_rarg3);
1043     __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_bits());
1044     __ cmpptr(c_rarg2, c_rarg3);
1045     __ jcc(Assembler::notZero, error);
1046 
1047     // set r12 to heapbase for load_klass()
1048     __ reinit_heapbase();
1049 
1050     // make sure klass is 'reasonable', which is not zero.
1051     __ load_klass(rax, rax);  // get klass
1052     __ testptr(rax, rax);
1053     __ jcc(Assembler::zero, error); // if klass is NULL it is broken
1054 
1055     // return if everything seems ok
1056     __ bind(exit);
1057     __ movptr(rax, Address(rsp, saved_rax));     // get saved rax back
1058     __ movptr(rscratch1, Address(rsp, saved_r10)); // get saved r10 back
1059     __ pop(c_rarg3);                             // restore c_rarg3
1060     __ pop(c_rarg2);                             // restore c_rarg2
1061     __ pop(r12);                                 // restore r12
1062     __ popf();                                   // restore flags
1063     __ ret(4 * wordSize);                        // pop caller saved stuff
1064 
1065     // handle errors
1066     __ bind(error);
1067     __ movptr(rax, Address(rsp, saved_rax));     // get saved rax back
1068     __ movptr(rscratch1, Address(rsp, saved_r10)); // get saved r10 back
1069     __ pop(c_rarg3);                             // get saved c_rarg3 back
1070     __ pop(c_rarg2);                             // get saved c_rarg2 back
1071     __ pop(r12);                                 // get saved r12 back
1072     __ popf();                                   // get saved flags off stack --
1073                                                  // will be ignored
1074 
1075     __ pusha();                                  // push registers
1076                                                  // (rip is already
1077                                                  // already pushed)
1078     // debug(char* msg, int64_t pc, int64_t regs[])
1079     // We've popped the registers we'd saved (c_rarg3, c_rarg2 and flags), and
1080     // pushed all the registers, so now the stack looks like:
1081     //     [tos +  0] 16 saved registers
1082     //     [tos + 16] return address
1083     //   * [tos + 17] error message (char*)
1084     //   * [tos + 18] object to verify (oop)
1085     //   * [tos + 19] saved rax - saved by caller and bashed
1086     //   * [tos + 20] saved r10 (rscratch1) - saved by caller
1087     //   * = popped on exit
1088 
1089     __ movptr(c_rarg0, Address(rsp, error_msg));    // pass address of error message
1090     __ movptr(c_rarg1, Address(rsp, return_addr));  // pass return address
1091     __ movq(c_rarg2, rsp);                          // pass address of regs on stack
1092     __ mov(r12, rsp);                               // remember rsp
1093     __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows
1094     __ andptr(rsp, -16);                            // align stack as required by ABI
1095     BLOCK_COMMENT("call MacroAssembler::debug");
1096     __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, MacroAssembler::debug64)));
1097     __ mov(rsp, r12);                               // restore rsp
1098     __ popa();                                      // pop registers (includes r12)
1099     __ ret(4 * wordSize);                           // pop caller saved stuff
1100 
1101     return start;
1102   }
1103 
1104   //
1105   // Verify that a register contains clean 32-bits positive value
1106   // (high 32-bits are 0) so it could be used in 64-bits shifts.
1107   //
1108   //  Input:
1109   //    Rint  -  32-bits value
1110   //    Rtmp  -  scratch
1111   //
1112   void assert_clean_int(Register Rint, Register Rtmp) {
1113 #ifdef ASSERT
1114     Label L;
1115     assert_different_registers(Rtmp, Rint);
1116     __ movslq(Rtmp, Rint);
1117     __ cmpq(Rtmp, Rint);
1118     __ jcc(Assembler::equal, L);
1119     __ stop("high 32-bits of int value are not 0");
1120     __ bind(L);
1121 #endif
1122   }
1123 
1124   //  Generate overlap test for array copy stubs
1125   //
1126   //  Input:
1127   //     c_rarg0 - from
1128   //     c_rarg1 - to
1129   //     c_rarg2 - element count
1130   //
1131   //  Output:
1132   //     rax   - &from[element count - 1]
1133   //
1134   void array_overlap_test(address no_overlap_target, Address::ScaleFactor sf) {
1135     assert(no_overlap_target != NULL, "must be generated");
1136     array_overlap_test(no_overlap_target, NULL, sf);
1137   }
1138   void array_overlap_test(Label& L_no_overlap, Address::ScaleFactor sf) {
1139     array_overlap_test(NULL, &L_no_overlap, sf);
1140   }
1141   void array_overlap_test(address no_overlap_target, Label* NOLp, Address::ScaleFactor sf) {
1142     const Register from     = c_rarg0;
1143     const Register to       = c_rarg1;
1144     const Register count    = c_rarg2;
1145     const Register end_from = rax;
1146 
1147     __ cmpptr(to, from);
1148     __ lea(end_from, Address(from, count, sf, 0));
1149     if (NOLp == NULL) {
1150       ExternalAddress no_overlap(no_overlap_target);
1151       __ jump_cc(Assembler::belowEqual, no_overlap);
1152       __ cmpptr(to, end_from);
1153       __ jump_cc(Assembler::aboveEqual, no_overlap);
1154     } else {
1155       __ jcc(Assembler::belowEqual, (*NOLp));
1156       __ cmpptr(to, end_from);
1157       __ jcc(Assembler::aboveEqual, (*NOLp));
1158     }
1159   }
1160 
1161   // Shuffle first three arg regs on Windows into Linux/Solaris locations.
1162   //
1163   // Outputs:
1164   //    rdi - rcx
1165   //    rsi - rdx
1166   //    rdx - r8
1167   //    rcx - r9
1168   //
1169   // Registers r9 and r10 are used to save rdi and rsi on Windows, which latter
1170   // are non-volatile.  r9 and r10 should not be used by the caller.
1171   //
1172   DEBUG_ONLY(bool regs_in_thread;)
1173 
1174   void setup_arg_regs(int nargs = 3) {
1175     const Register saved_rdi = r9;
1176     const Register saved_rsi = r10;
1177     assert(nargs == 3 || nargs == 4, "else fix");
1178 #ifdef _WIN64
1179     assert(c_rarg0 == rcx && c_rarg1 == rdx && c_rarg2 == r8 && c_rarg3 == r9,
1180            "unexpected argument registers");
1181     if (nargs >= 4)
1182       __ mov(rax, r9);  // r9 is also saved_rdi
1183     __ movptr(saved_rdi, rdi);
1184     __ movptr(saved_rsi, rsi);
1185     __ mov(rdi, rcx); // c_rarg0
1186     __ mov(rsi, rdx); // c_rarg1
1187     __ mov(rdx, r8);  // c_rarg2
1188     if (nargs >= 4)
1189       __ mov(rcx, rax); // c_rarg3 (via rax)
1190 #else
1191     assert(c_rarg0 == rdi && c_rarg1 == rsi && c_rarg2 == rdx && c_rarg3 == rcx,
1192            "unexpected argument registers");
1193 #endif
1194     DEBUG_ONLY(regs_in_thread = false;)
1195   }
1196 
1197   void restore_arg_regs() {
1198     assert(!regs_in_thread, "wrong call to restore_arg_regs");
1199     const Register saved_rdi = r9;
1200     const Register saved_rsi = r10;
1201 #ifdef _WIN64
1202     __ movptr(rdi, saved_rdi);
1203     __ movptr(rsi, saved_rsi);
1204 #endif
1205   }
1206 
1207   // This is used in places where r10 is a scratch register, and can
1208   // be adapted if r9 is needed also.
1209   void setup_arg_regs_using_thread() {
1210     const Register saved_r15 = r9;
1211 #ifdef _WIN64
1212     __ mov(saved_r15, r15);  // r15 is callee saved and needs to be restored
1213     __ get_thread(r15_thread);
1214     assert(c_rarg0 == rcx && c_rarg1 == rdx && c_rarg2 == r8 && c_rarg3 == r9,
1215            "unexpected argument registers");
1216     __ movptr(Address(r15_thread, in_bytes(JavaThread::windows_saved_rdi_offset())), rdi);
1217     __ movptr(Address(r15_thread, in_bytes(JavaThread::windows_saved_rsi_offset())), rsi);
1218 
1219     __ mov(rdi, rcx); // c_rarg0
1220     __ mov(rsi, rdx); // c_rarg1
1221     __ mov(rdx, r8);  // c_rarg2
1222 #else
1223     assert(c_rarg0 == rdi && c_rarg1 == rsi && c_rarg2 == rdx && c_rarg3 == rcx,
1224            "unexpected argument registers");
1225 #endif
1226     DEBUG_ONLY(regs_in_thread = true;)
1227   }
1228 
1229   void restore_arg_regs_using_thread() {
1230     assert(regs_in_thread, "wrong call to restore_arg_regs");
1231     const Register saved_r15 = r9;
1232 #ifdef _WIN64
1233     __ get_thread(r15_thread);
1234     __ movptr(rsi, Address(r15_thread, in_bytes(JavaThread::windows_saved_rsi_offset())));
1235     __ movptr(rdi, Address(r15_thread, in_bytes(JavaThread::windows_saved_rdi_offset())));
1236     __ mov(r15, saved_r15);  // r15 is callee saved and needs to be restored
1237 #endif
1238   }
1239 
1240   // Copy big chunks forward
1241   //
1242   // Inputs:
1243   //   end_from     - source arrays end address
1244   //   end_to       - destination array end address
1245   //   qword_count  - 64-bits element count, negative
1246   //   to           - scratch
1247   //   L_copy_bytes - entry label
1248   //   L_copy_8_bytes  - exit  label
1249   //
1250   void copy_bytes_forward(Register end_from, Register end_to,
1251                              Register qword_count, Register to,
1252                              Label& L_copy_bytes, Label& L_copy_8_bytes) {
1253     DEBUG_ONLY(__ stop("enter at entry label, not here"));
1254     Label L_loop;
1255     __ align(OptoLoopAlignment);
1256     if (UseUnalignedLoadStores) {
1257       Label L_end;
1258       // Copy 64-bytes per iteration
1259       __ BIND(L_loop);
1260       if (UseAVX > 2) {
1261         __ evmovdqul(xmm0, Address(end_from, qword_count, Address::times_8, -56), Assembler::AVX_512bit);
1262         __ evmovdqul(Address(end_to, qword_count, Address::times_8, -56), xmm0, Assembler::AVX_512bit);
1263       } else if (UseAVX == 2) {
1264         __ vmovdqu(xmm0, Address(end_from, qword_count, Address::times_8, -56));
1265         __ vmovdqu(Address(end_to, qword_count, Address::times_8, -56), xmm0);
1266         __ vmovdqu(xmm1, Address(end_from, qword_count, Address::times_8, -24));
1267         __ vmovdqu(Address(end_to, qword_count, Address::times_8, -24), xmm1);
1268       } else {
1269         __ movdqu(xmm0, Address(end_from, qword_count, Address::times_8, -56));
1270         __ movdqu(Address(end_to, qword_count, Address::times_8, -56), xmm0);
1271         __ movdqu(xmm1, Address(end_from, qword_count, Address::times_8, -40));
1272         __ movdqu(Address(end_to, qword_count, Address::times_8, -40), xmm1);
1273         __ movdqu(xmm2, Address(end_from, qword_count, Address::times_8, -24));
1274         __ movdqu(Address(end_to, qword_count, Address::times_8, -24), xmm2);
1275         __ movdqu(xmm3, Address(end_from, qword_count, Address::times_8, - 8));
1276         __ movdqu(Address(end_to, qword_count, Address::times_8, - 8), xmm3);
1277       }
1278       __ BIND(L_copy_bytes);
1279       __ addptr(qword_count, 8);
1280       __ jcc(Assembler::lessEqual, L_loop);
1281       __ subptr(qword_count, 4);  // sub(8) and add(4)
1282       __ jccb(Assembler::greater, L_end);
1283       // Copy trailing 32 bytes
1284       if (UseAVX >= 2) {
1285         __ vmovdqu(xmm0, Address(end_from, qword_count, Address::times_8, -24));
1286         __ vmovdqu(Address(end_to, qword_count, Address::times_8, -24), xmm0);
1287       } else {
1288         __ movdqu(xmm0, Address(end_from, qword_count, Address::times_8, -24));
1289         __ movdqu(Address(end_to, qword_count, Address::times_8, -24), xmm0);
1290         __ movdqu(xmm1, Address(end_from, qword_count, Address::times_8, - 8));
1291         __ movdqu(Address(end_to, qword_count, Address::times_8, - 8), xmm1);
1292       }
1293       __ addptr(qword_count, 4);
1294       __ BIND(L_end);
1295       if (UseAVX >= 2) {
1296         // clean upper bits of YMM registers
1297         __ vpxor(xmm0, xmm0);
1298         __ vpxor(xmm1, xmm1);
1299       }
1300     } else {
1301       // Copy 32-bytes per iteration
1302       __ BIND(L_loop);
1303       __ movq(to, Address(end_from, qword_count, Address::times_8, -24));
1304       __ movq(Address(end_to, qword_count, Address::times_8, -24), to);
1305       __ movq(to, Address(end_from, qword_count, Address::times_8, -16));
1306       __ movq(Address(end_to, qword_count, Address::times_8, -16), to);
1307       __ movq(to, Address(end_from, qword_count, Address::times_8, - 8));
1308       __ movq(Address(end_to, qword_count, Address::times_8, - 8), to);
1309       __ movq(to, Address(end_from, qword_count, Address::times_8, - 0));
1310       __ movq(Address(end_to, qword_count, Address::times_8, - 0), to);
1311 
1312       __ BIND(L_copy_bytes);
1313       __ addptr(qword_count, 4);
1314       __ jcc(Assembler::lessEqual, L_loop);
1315     }
1316     __ subptr(qword_count, 4);
1317     __ jcc(Assembler::less, L_copy_8_bytes); // Copy trailing qwords
1318   }
1319 
1320   // Copy big chunks backward
1321   //
1322   // Inputs:
1323   //   from         - source arrays address
1324   //   dest         - destination array address
1325   //   qword_count  - 64-bits element count
1326   //   to           - scratch
1327   //   L_copy_bytes - entry label
1328   //   L_copy_8_bytes  - exit  label
1329   //
1330   void copy_bytes_backward(Register from, Register dest,
1331                               Register qword_count, Register to,
1332                               Label& L_copy_bytes, Label& L_copy_8_bytes) {
1333     DEBUG_ONLY(__ stop("enter at entry label, not here"));
1334     Label L_loop;
1335     __ align(OptoLoopAlignment);
1336     if (UseUnalignedLoadStores) {
1337       Label L_end;
1338       // Copy 64-bytes per iteration
1339       __ BIND(L_loop);
1340       if (UseAVX > 2) {
1341         __ evmovdqul(xmm0, Address(from, qword_count, Address::times_8, 0), Assembler::AVX_512bit);
1342         __ evmovdqul(Address(dest, qword_count, Address::times_8, 0), xmm0, Assembler::AVX_512bit);
1343       } else if (UseAVX == 2) {
1344         __ vmovdqu(xmm0, Address(from, qword_count, Address::times_8, 32));
1345         __ vmovdqu(Address(dest, qword_count, Address::times_8, 32), xmm0);
1346         __ vmovdqu(xmm1, Address(from, qword_count, Address::times_8,  0));
1347         __ vmovdqu(Address(dest, qword_count, Address::times_8,  0), xmm1);
1348       } else {
1349         __ movdqu(xmm0, Address(from, qword_count, Address::times_8, 48));
1350         __ movdqu(Address(dest, qword_count, Address::times_8, 48), xmm0);
1351         __ movdqu(xmm1, Address(from, qword_count, Address::times_8, 32));
1352         __ movdqu(Address(dest, qword_count, Address::times_8, 32), xmm1);
1353         __ movdqu(xmm2, Address(from, qword_count, Address::times_8, 16));
1354         __ movdqu(Address(dest, qword_count, Address::times_8, 16), xmm2);
1355         __ movdqu(xmm3, Address(from, qword_count, Address::times_8,  0));
1356         __ movdqu(Address(dest, qword_count, Address::times_8,  0), xmm3);
1357       }
1358       __ BIND(L_copy_bytes);
1359       __ subptr(qword_count, 8);
1360       __ jcc(Assembler::greaterEqual, L_loop);
1361 
1362       __ addptr(qword_count, 4);  // add(8) and sub(4)
1363       __ jccb(Assembler::less, L_end);
1364       // Copy trailing 32 bytes
1365       if (UseAVX >= 2) {
1366         __ vmovdqu(xmm0, Address(from, qword_count, Address::times_8, 0));
1367         __ vmovdqu(Address(dest, qword_count, Address::times_8, 0), xmm0);
1368       } else {
1369         __ movdqu(xmm0, Address(from, qword_count, Address::times_8, 16));
1370         __ movdqu(Address(dest, qword_count, Address::times_8, 16), xmm0);
1371         __ movdqu(xmm1, Address(from, qword_count, Address::times_8,  0));
1372         __ movdqu(Address(dest, qword_count, Address::times_8,  0), xmm1);
1373       }
1374       __ subptr(qword_count, 4);
1375       __ BIND(L_end);
1376       if (UseAVX >= 2) {
1377         // clean upper bits of YMM registers
1378         __ vpxor(xmm0, xmm0);
1379         __ vpxor(xmm1, xmm1);
1380       }
1381     } else {
1382       // Copy 32-bytes per iteration
1383       __ BIND(L_loop);
1384       __ movq(to, Address(from, qword_count, Address::times_8, 24));
1385       __ movq(Address(dest, qword_count, Address::times_8, 24), to);
1386       __ movq(to, Address(from, qword_count, Address::times_8, 16));
1387       __ movq(Address(dest, qword_count, Address::times_8, 16), to);
1388       __ movq(to, Address(from, qword_count, Address::times_8,  8));
1389       __ movq(Address(dest, qword_count, Address::times_8,  8), to);
1390       __ movq(to, Address(from, qword_count, Address::times_8,  0));
1391       __ movq(Address(dest, qword_count, Address::times_8,  0), to);
1392 
1393       __ BIND(L_copy_bytes);
1394       __ subptr(qword_count, 4);
1395       __ jcc(Assembler::greaterEqual, L_loop);
1396     }
1397     __ addptr(qword_count, 4);
1398     __ jcc(Assembler::greater, L_copy_8_bytes); // Copy trailing qwords
1399   }
1400 
1401 
1402   // Arguments:
1403   //   aligned - true => Input and output aligned on a HeapWord == 8-byte boundary
1404   //             ignored
1405   //   name    - stub name string
1406   //
1407   // Inputs:
1408   //   c_rarg0   - source array address
1409   //   c_rarg1   - destination array address
1410   //   c_rarg2   - element count, treated as ssize_t, can be zero
1411   //
1412   // If 'from' and/or 'to' are aligned on 4-, 2-, or 1-byte boundaries,
1413   // we let the hardware handle it.  The one to eight bytes within words,
1414   // dwords or qwords that span cache line boundaries will still be loaded
1415   // and stored atomically.
1416   //
1417   // Side Effects:
1418   //   disjoint_byte_copy_entry is set to the no-overlap entry point
1419   //   used by generate_conjoint_byte_copy().
1420   //
1421   address generate_disjoint_byte_copy(bool aligned, address* entry, const char *name) {
1422     __ align(CodeEntryAlignment);
1423     StubCodeMark mark(this, "StubRoutines", name);
1424     address start = __ pc();
1425 
1426     Label L_copy_bytes, L_copy_8_bytes, L_copy_4_bytes, L_copy_2_bytes;
1427     Label L_copy_byte, L_exit;
1428     const Register from        = rdi;  // source array address
1429     const Register to          = rsi;  // destination array address
1430     const Register count       = rdx;  // elements count
1431     const Register byte_count  = rcx;
1432     const Register qword_count = count;
1433     const Register end_from    = from; // source array end address
1434     const Register end_to      = to;   // destination array end address
1435     // End pointers are inclusive, and if count is not zero they point
1436     // to the last unit copied:  end_to[0] := end_from[0]
1437 
1438     __ enter(); // required for proper stackwalking of RuntimeStub frame
1439     assert_clean_int(c_rarg2, rax);    // Make sure 'count' is clean int.
1440 
1441     if (entry != NULL) {
1442       *entry = __ pc();
1443        // caller can pass a 64-bit byte count here (from Unsafe.copyMemory)
1444       BLOCK_COMMENT("Entry:");
1445     }
1446 
1447     setup_arg_regs(); // from => rdi, to => rsi, count => rdx
1448                       // r9 and r10 may be used to save non-volatile registers
1449 
1450     // 'from', 'to' and 'count' are now valid
1451     __ movptr(byte_count, count);
1452     __ shrptr(count, 3); // count => qword_count
1453 
1454     // Copy from low to high addresses.  Use 'to' as scratch.
1455     __ lea(end_from, Address(from, qword_count, Address::times_8, -8));
1456     __ lea(end_to,   Address(to,   qword_count, Address::times_8, -8));
1457     __ negptr(qword_count); // make the count negative
1458     __ jmp(L_copy_bytes);
1459 
1460     // Copy trailing qwords
1461   __ BIND(L_copy_8_bytes);
1462     __ movq(rax, Address(end_from, qword_count, Address::times_8, 8));
1463     __ movq(Address(end_to, qword_count, Address::times_8, 8), rax);
1464     __ increment(qword_count);
1465     __ jcc(Assembler::notZero, L_copy_8_bytes);
1466 
1467     // Check for and copy trailing dword
1468   __ BIND(L_copy_4_bytes);
1469     __ testl(byte_count, 4);
1470     __ jccb(Assembler::zero, L_copy_2_bytes);
1471     __ movl(rax, Address(end_from, 8));
1472     __ movl(Address(end_to, 8), rax);
1473 
1474     __ addptr(end_from, 4);
1475     __ addptr(end_to, 4);
1476 
1477     // Check for and copy trailing word
1478   __ BIND(L_copy_2_bytes);
1479     __ testl(byte_count, 2);
1480     __ jccb(Assembler::zero, L_copy_byte);
1481     __ movw(rax, Address(end_from, 8));
1482     __ movw(Address(end_to, 8), rax);
1483 
1484     __ addptr(end_from, 2);
1485     __ addptr(end_to, 2);
1486 
1487     // Check for and copy trailing byte
1488   __ BIND(L_copy_byte);
1489     __ testl(byte_count, 1);
1490     __ jccb(Assembler::zero, L_exit);
1491     __ movb(rax, Address(end_from, 8));
1492     __ movb(Address(end_to, 8), rax);
1493 
1494   __ BIND(L_exit);
1495     restore_arg_regs();
1496     inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); // Update counter after rscratch1 is free
1497     __ xorptr(rax, rax); // return 0
1498     __ vzeroupper();
1499     __ leave(); // required for proper stackwalking of RuntimeStub frame
1500     __ ret(0);
1501 
1502     // Copy in multi-bytes chunks
1503     copy_bytes_forward(end_from, end_to, qword_count, rax, L_copy_bytes, L_copy_8_bytes);
1504     __ jmp(L_copy_4_bytes);
1505 
1506     return start;
1507   }
1508 
1509   // Arguments:
1510   //   aligned - true => Input and output aligned on a HeapWord == 8-byte boundary
1511   //             ignored
1512   //   name    - stub name string
1513   //
1514   // Inputs:
1515   //   c_rarg0   - source array address
1516   //   c_rarg1   - destination array address
1517   //   c_rarg2   - element count, treated as ssize_t, can be zero
1518   //
1519   // If 'from' and/or 'to' are aligned on 4-, 2-, or 1-byte boundaries,
1520   // we let the hardware handle it.  The one to eight bytes within words,
1521   // dwords or qwords that span cache line boundaries will still be loaded
1522   // and stored atomically.
1523   //
1524   address generate_conjoint_byte_copy(bool aligned, address nooverlap_target,
1525                                       address* entry, const char *name) {
1526     __ align(CodeEntryAlignment);
1527     StubCodeMark mark(this, "StubRoutines", name);
1528     address start = __ pc();
1529 
1530     Label L_copy_bytes, L_copy_8_bytes, L_copy_4_bytes, L_copy_2_bytes;
1531     const Register from        = rdi;  // source array address
1532     const Register to          = rsi;  // destination array address
1533     const Register count       = rdx;  // elements count
1534     const Register byte_count  = rcx;
1535     const Register qword_count = count;
1536 
1537     __ enter(); // required for proper stackwalking of RuntimeStub frame
1538     assert_clean_int(c_rarg2, rax);    // Make sure 'count' is clean int.
1539 
1540     if (entry != NULL) {
1541       *entry = __ pc();
1542       // caller can pass a 64-bit byte count here (from Unsafe.copyMemory)
1543       BLOCK_COMMENT("Entry:");
1544     }
1545 
1546     array_overlap_test(nooverlap_target, Address::times_1);
1547     setup_arg_regs(); // from => rdi, to => rsi, count => rdx
1548                       // r9 and r10 may be used to save non-volatile registers
1549 
1550     // 'from', 'to' and 'count' are now valid
1551     __ movptr(byte_count, count);
1552     __ shrptr(count, 3);   // count => qword_count
1553 
1554     // Copy from high to low addresses.
1555 
1556     // Check for and copy trailing byte
1557     __ testl(byte_count, 1);
1558     __ jcc(Assembler::zero, L_copy_2_bytes);
1559     __ movb(rax, Address(from, byte_count, Address::times_1, -1));
1560     __ movb(Address(to, byte_count, Address::times_1, -1), rax);
1561     __ decrement(byte_count); // Adjust for possible trailing word
1562 
1563     // Check for and copy trailing word
1564   __ BIND(L_copy_2_bytes);
1565     __ testl(byte_count, 2);
1566     __ jcc(Assembler::zero, L_copy_4_bytes);
1567     __ movw(rax, Address(from, byte_count, Address::times_1, -2));
1568     __ movw(Address(to, byte_count, Address::times_1, -2), rax);
1569 
1570     // Check for and copy trailing dword
1571   __ BIND(L_copy_4_bytes);
1572     __ testl(byte_count, 4);
1573     __ jcc(Assembler::zero, L_copy_bytes);
1574     __ movl(rax, Address(from, qword_count, Address::times_8));
1575     __ movl(Address(to, qword_count, Address::times_8), rax);
1576     __ jmp(L_copy_bytes);
1577 
1578     // Copy trailing qwords
1579   __ BIND(L_copy_8_bytes);
1580     __ movq(rax, Address(from, qword_count, Address::times_8, -8));
1581     __ movq(Address(to, qword_count, Address::times_8, -8), rax);
1582     __ decrement(qword_count);
1583     __ jcc(Assembler::notZero, L_copy_8_bytes);
1584 
1585     restore_arg_regs();
1586     inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); // Update counter after rscratch1 is free
1587     __ xorptr(rax, rax); // return 0
1588     __ vzeroupper();
1589     __ leave(); // required for proper stackwalking of RuntimeStub frame
1590     __ ret(0);
1591 
1592     // Copy in multi-bytes chunks
1593     copy_bytes_backward(from, to, qword_count, rax, L_copy_bytes, L_copy_8_bytes);
1594 
1595     restore_arg_regs();
1596     inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); // Update counter after rscratch1 is free
1597     __ xorptr(rax, rax); // return 0
1598     __ vzeroupper();
1599     __ leave(); // required for proper stackwalking of RuntimeStub frame
1600     __ ret(0);
1601 
1602     return start;
1603   }
1604 
1605   // Arguments:
1606   //   aligned - true => Input and output aligned on a HeapWord == 8-byte boundary
1607   //             ignored
1608   //   name    - stub name string
1609   //
1610   // Inputs:
1611   //   c_rarg0   - source array address
1612   //   c_rarg1   - destination array address
1613   //   c_rarg2   - element count, treated as ssize_t, can be zero
1614   //
1615   // If 'from' and/or 'to' are aligned on 4- or 2-byte boundaries, we
1616   // let the hardware handle it.  The two or four words within dwords
1617   // or qwords that span cache line boundaries will still be loaded
1618   // and stored atomically.
1619   //
1620   // Side Effects:
1621   //   disjoint_short_copy_entry is set to the no-overlap entry point
1622   //   used by generate_conjoint_short_copy().
1623   //
1624   address generate_disjoint_short_copy(bool aligned, address *entry, const char *name) {
1625     __ align(CodeEntryAlignment);
1626     StubCodeMark mark(this, "StubRoutines", name);
1627     address start = __ pc();
1628 
1629     Label L_copy_bytes, L_copy_8_bytes, L_copy_4_bytes,L_copy_2_bytes,L_exit;
1630     const Register from        = rdi;  // source array address
1631     const Register to          = rsi;  // destination array address
1632     const Register count       = rdx;  // elements count
1633     const Register word_count  = rcx;
1634     const Register qword_count = count;
1635     const Register end_from    = from; // source array end address
1636     const Register end_to      = to;   // destination array end address
1637     // End pointers are inclusive, and if count is not zero they point
1638     // to the last unit copied:  end_to[0] := end_from[0]
1639 
1640     __ enter(); // required for proper stackwalking of RuntimeStub frame
1641     assert_clean_int(c_rarg2, rax);    // Make sure 'count' is clean int.
1642 
1643     if (entry != NULL) {
1644       *entry = __ pc();
1645       // caller can pass a 64-bit byte count here (from Unsafe.copyMemory)
1646       BLOCK_COMMENT("Entry:");
1647     }
1648 
1649     setup_arg_regs(); // from => rdi, to => rsi, count => rdx
1650                       // r9 and r10 may be used to save non-volatile registers
1651 
1652     // 'from', 'to' and 'count' are now valid
1653     __ movptr(word_count, count);
1654     __ shrptr(count, 2); // count => qword_count
1655 
1656     // Copy from low to high addresses.  Use 'to' as scratch.
1657     __ lea(end_from, Address(from, qword_count, Address::times_8, -8));
1658     __ lea(end_to,   Address(to,   qword_count, Address::times_8, -8));
1659     __ negptr(qword_count);
1660     __ jmp(L_copy_bytes);
1661 
1662     // Copy trailing qwords
1663   __ BIND(L_copy_8_bytes);
1664     __ movq(rax, Address(end_from, qword_count, Address::times_8, 8));
1665     __ movq(Address(end_to, qword_count, Address::times_8, 8), rax);
1666     __ increment(qword_count);
1667     __ jcc(Assembler::notZero, L_copy_8_bytes);
1668 
1669     // Original 'dest' is trashed, so we can't use it as a
1670     // base register for a possible trailing word copy
1671 
1672     // Check for and copy trailing dword
1673   __ BIND(L_copy_4_bytes);
1674     __ testl(word_count, 2);
1675     __ jccb(Assembler::zero, L_copy_2_bytes);
1676     __ movl(rax, Address(end_from, 8));
1677     __ movl(Address(end_to, 8), rax);
1678 
1679     __ addptr(end_from, 4);
1680     __ addptr(end_to, 4);
1681 
1682     // Check for and copy trailing word
1683   __ BIND(L_copy_2_bytes);
1684     __ testl(word_count, 1);
1685     __ jccb(Assembler::zero, L_exit);
1686     __ movw(rax, Address(end_from, 8));
1687     __ movw(Address(end_to, 8), rax);
1688 
1689   __ BIND(L_exit);
1690     restore_arg_regs();
1691     inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); // Update counter after rscratch1 is free
1692     __ xorptr(rax, rax); // return 0
1693     __ vzeroupper();
1694     __ leave(); // required for proper stackwalking of RuntimeStub frame
1695     __ ret(0);
1696 
1697     // Copy in multi-bytes chunks
1698     copy_bytes_forward(end_from, end_to, qword_count, rax, L_copy_bytes, L_copy_8_bytes);
1699     __ jmp(L_copy_4_bytes);
1700 
1701     return start;
1702   }
1703 
1704   address generate_fill(BasicType t, bool aligned, const char *name) {
1705     __ align(CodeEntryAlignment);
1706     StubCodeMark mark(this, "StubRoutines", name);
1707     address start = __ pc();
1708 
1709     BLOCK_COMMENT("Entry:");
1710 
1711     const Register to       = c_rarg0;  // source array address
1712     const Register value    = c_rarg1;  // value
1713     const Register count    = c_rarg2;  // elements count
1714 
1715     __ enter(); // required for proper stackwalking of RuntimeStub frame
1716 
1717     __ generate_fill(t, aligned, to, value, count, rax, xmm0);
1718 
1719     __ vzeroupper();
1720     __ leave(); // required for proper stackwalking of RuntimeStub frame
1721     __ ret(0);
1722     return start;
1723   }
1724 
1725   // Arguments:
1726   //   aligned - true => Input and output aligned on a HeapWord == 8-byte boundary
1727   //             ignored
1728   //   name    - stub name string
1729   //
1730   // Inputs:
1731   //   c_rarg0   - source array address
1732   //   c_rarg1   - destination array address
1733   //   c_rarg2   - element count, treated as ssize_t, can be zero
1734   //
1735   // If 'from' and/or 'to' are aligned on 4- or 2-byte boundaries, we
1736   // let the hardware handle it.  The two or four words within dwords
1737   // or qwords that span cache line boundaries will still be loaded
1738   // and stored atomically.
1739   //
1740   address generate_conjoint_short_copy(bool aligned, address nooverlap_target,
1741                                        address *entry, const char *name) {
1742     __ align(CodeEntryAlignment);
1743     StubCodeMark mark(this, "StubRoutines", name);
1744     address start = __ pc();
1745 
1746     Label L_copy_bytes, L_copy_8_bytes, L_copy_4_bytes;
1747     const Register from        = rdi;  // source array address
1748     const Register to          = rsi;  // destination array address
1749     const Register count       = rdx;  // elements count
1750     const Register word_count  = rcx;
1751     const Register qword_count = count;
1752 
1753     __ enter(); // required for proper stackwalking of RuntimeStub frame
1754     assert_clean_int(c_rarg2, rax);    // Make sure 'count' is clean int.
1755 
1756     if (entry != NULL) {
1757       *entry = __ pc();
1758       // caller can pass a 64-bit byte count here (from Unsafe.copyMemory)
1759       BLOCK_COMMENT("Entry:");
1760     }
1761 
1762     array_overlap_test(nooverlap_target, Address::times_2);
1763     setup_arg_regs(); // from => rdi, to => rsi, count => rdx
1764                       // r9 and r10 may be used to save non-volatile registers
1765 
1766     // 'from', 'to' and 'count' are now valid
1767     __ movptr(word_count, count);
1768     __ shrptr(count, 2); // count => qword_count
1769 
1770     // Copy from high to low addresses.  Use 'to' as scratch.
1771 
1772     // Check for and copy trailing word
1773     __ testl(word_count, 1);
1774     __ jccb(Assembler::zero, L_copy_4_bytes);
1775     __ movw(rax, Address(from, word_count, Address::times_2, -2));
1776     __ movw(Address(to, word_count, Address::times_2, -2), rax);
1777 
1778     // Check for and copy trailing dword
1779   __ BIND(L_copy_4_bytes);
1780     __ testl(word_count, 2);
1781     __ jcc(Assembler::zero, L_copy_bytes);
1782     __ movl(rax, Address(from, qword_count, Address::times_8));
1783     __ movl(Address(to, qword_count, Address::times_8), rax);
1784     __ jmp(L_copy_bytes);
1785 
1786     // Copy trailing qwords
1787   __ BIND(L_copy_8_bytes);
1788     __ movq(rax, Address(from, qword_count, Address::times_8, -8));
1789     __ movq(Address(to, qword_count, Address::times_8, -8), rax);
1790     __ decrement(qword_count);
1791     __ jcc(Assembler::notZero, L_copy_8_bytes);
1792 
1793     restore_arg_regs();
1794     inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); // Update counter after rscratch1 is free
1795     __ xorptr(rax, rax); // return 0
1796     __ vzeroupper();
1797     __ leave(); // required for proper stackwalking of RuntimeStub frame
1798     __ ret(0);
1799 
1800     // Copy in multi-bytes chunks
1801     copy_bytes_backward(from, to, qword_count, rax, L_copy_bytes, L_copy_8_bytes);
1802 
1803     restore_arg_regs();
1804     inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); // Update counter after rscratch1 is free
1805     __ xorptr(rax, rax); // return 0
1806     __ vzeroupper();
1807     __ leave(); // required for proper stackwalking of RuntimeStub frame
1808     __ ret(0);
1809 
1810     return start;
1811   }
1812 
1813   // Arguments:
1814   //   aligned - true => Input and output aligned on a HeapWord == 8-byte boundary
1815   //             ignored
1816   //   is_oop  - true => oop array, so generate store check code
1817   //   name    - stub name string
1818   //
1819   // Inputs:
1820   //   c_rarg0   - source array address
1821   //   c_rarg1   - destination array address
1822   //   c_rarg2   - element count, treated as ssize_t, can be zero
1823   //
1824   // If 'from' and/or 'to' are aligned on 4-byte boundaries, we let
1825   // the hardware handle it.  The two dwords within qwords that span
1826   // cache line boundaries will still be loaded and stored atomicly.
1827   //
1828   // Side Effects:
1829   //   disjoint_int_copy_entry is set to the no-overlap entry point
1830   //   used by generate_conjoint_int_oop_copy().
1831   //
1832   address generate_disjoint_int_oop_copy(bool aligned, bool is_oop, address* entry,
1833                                          const char *name, bool dest_uninitialized = false) {
1834     __ align(CodeEntryAlignment);
1835     StubCodeMark mark(this, "StubRoutines", name);
1836     address start = __ pc();
1837 
1838     Label L_copy_bytes, L_copy_8_bytes, L_copy_4_bytes, L_exit;
1839     const Register from        = rdi;  // source array address
1840     const Register to          = rsi;  // destination array address
1841     const Register count       = rdx;  // elements count
1842     const Register dword_count = rcx;
1843     const Register qword_count = count;
1844     const Register end_from    = from; // source array end address
1845     const Register end_to      = to;   // destination array end address
1846     // End pointers are inclusive, and if count is not zero they point
1847     // to the last unit copied:  end_to[0] := end_from[0]
1848 
1849     __ enter(); // required for proper stackwalking of RuntimeStub frame
1850     assert_clean_int(c_rarg2, rax);    // Make sure 'count' is clean int.
1851 
1852     if (entry != NULL) {
1853       *entry = __ pc();
1854       // caller can pass a 64-bit byte count here (from Unsafe.copyMemory)
1855       BLOCK_COMMENT("Entry:");
1856     }
1857 
1858     setup_arg_regs_using_thread(); // from => rdi, to => rsi, count => rdx
1859                                    // r9 is used to save r15_thread
1860 
1861     DecoratorSet decorators = IN_HEAP | IS_ARRAY | ARRAYCOPY_DISJOINT;
1862     if (dest_uninitialized) {
1863       decorators |= IS_DEST_UNINITIALIZED;
1864     }
1865     if (aligned) {
1866       decorators |= ARRAYCOPY_ALIGNED;
1867     }
1868 
1869     BasicType type = is_oop ? T_OBJECT : T_INT;
1870     BarrierSetAssembler *bs = BarrierSet::barrier_set()->barrier_set_assembler();
1871     bs->arraycopy_prologue(_masm, decorators, type, from, to, count);
1872 
1873     // 'from', 'to' and 'count' are now valid
1874     __ movptr(dword_count, count);
1875     __ shrptr(count, 1); // count => qword_count
1876 
1877     // Copy from low to high addresses.  Use 'to' as scratch.
1878     __ lea(end_from, Address(from, qword_count, Address::times_8, -8));
1879     __ lea(end_to,   Address(to,   qword_count, Address::times_8, -8));
1880     __ negptr(qword_count);
1881     __ jmp(L_copy_bytes);
1882 
1883     // Copy trailing qwords
1884   __ BIND(L_copy_8_bytes);
1885     __ movq(rax, Address(end_from, qword_count, Address::times_8, 8));
1886     __ movq(Address(end_to, qword_count, Address::times_8, 8), rax);
1887     __ increment(qword_count);
1888     __ jcc(Assembler::notZero, L_copy_8_bytes);
1889 
1890     // Check for and copy trailing dword
1891   __ BIND(L_copy_4_bytes);
1892     __ testl(dword_count, 1); // Only byte test since the value is 0 or 1
1893     __ jccb(Assembler::zero, L_exit);
1894     __ movl(rax, Address(end_from, 8));
1895     __ movl(Address(end_to, 8), rax);
1896 
1897   __ BIND(L_exit);
1898     bs->arraycopy_epilogue(_masm, decorators, type, from, to, dword_count);
1899     restore_arg_regs_using_thread();
1900     inc_counter_np(SharedRuntime::_jint_array_copy_ctr); // Update counter after rscratch1 is free
1901     __ vzeroupper();
1902     __ xorptr(rax, rax); // return 0
1903     __ leave(); // required for proper stackwalking of RuntimeStub frame
1904     __ ret(0);
1905 
1906     // Copy in multi-bytes chunks
1907     copy_bytes_forward(end_from, end_to, qword_count, rax, L_copy_bytes, L_copy_8_bytes);
1908     __ jmp(L_copy_4_bytes);
1909 
1910     return start;
1911   }
1912 
1913   // Arguments:
1914   //   aligned - true => Input and output aligned on a HeapWord == 8-byte boundary
1915   //             ignored
1916   //   is_oop  - true => oop array, so generate store check code
1917   //   name    - stub name string
1918   //
1919   // Inputs:
1920   //   c_rarg0   - source array address
1921   //   c_rarg1   - destination array address
1922   //   c_rarg2   - element count, treated as ssize_t, can be zero
1923   //
1924   // If 'from' and/or 'to' are aligned on 4-byte boundaries, we let
1925   // the hardware handle it.  The two dwords within qwords that span
1926   // cache line boundaries will still be loaded and stored atomicly.
1927   //
1928   address generate_conjoint_int_oop_copy(bool aligned, bool is_oop, address nooverlap_target,
1929                                          address *entry, const char *name,
1930                                          bool dest_uninitialized = false) {
1931     __ align(CodeEntryAlignment);
1932     StubCodeMark mark(this, "StubRoutines", name);
1933     address start = __ pc();
1934 
1935     Label L_copy_bytes, L_copy_8_bytes, L_exit;
1936     const Register from        = rdi;  // source array address
1937     const Register to          = rsi;  // destination array address
1938     const Register count       = rdx;  // elements count
1939     const Register dword_count = rcx;
1940     const Register qword_count = count;
1941 
1942     __ enter(); // required for proper stackwalking of RuntimeStub frame
1943     assert_clean_int(c_rarg2, rax);    // Make sure 'count' is clean int.
1944 
1945     if (entry != NULL) {
1946       *entry = __ pc();
1947        // caller can pass a 64-bit byte count here (from Unsafe.copyMemory)
1948       BLOCK_COMMENT("Entry:");
1949     }
1950 
1951     array_overlap_test(nooverlap_target, Address::times_4);
1952     setup_arg_regs_using_thread(); // from => rdi, to => rsi, count => rdx
1953                                    // r9 is used to save r15_thread
1954 
1955     DecoratorSet decorators = IN_HEAP | IS_ARRAY;
1956     if (dest_uninitialized) {
1957       decorators |= IS_DEST_UNINITIALIZED;
1958     }
1959     if (aligned) {
1960       decorators |= ARRAYCOPY_ALIGNED;
1961     }
1962 
1963     BasicType type = is_oop ? T_OBJECT : T_INT;
1964     BarrierSetAssembler *bs = BarrierSet::barrier_set()->barrier_set_assembler();
1965     // no registers are destroyed by this call
1966     bs->arraycopy_prologue(_masm, decorators, type, from, to, count);
1967 
1968     assert_clean_int(count, rax); // Make sure 'count' is clean int.
1969     // 'from', 'to' and 'count' are now valid
1970     __ movptr(dword_count, count);
1971     __ shrptr(count, 1); // count => qword_count
1972 
1973     // Copy from high to low addresses.  Use 'to' as scratch.
1974 
1975     // Check for and copy trailing dword
1976     __ testl(dword_count, 1);
1977     __ jcc(Assembler::zero, L_copy_bytes);
1978     __ movl(rax, Address(from, dword_count, Address::times_4, -4));
1979     __ movl(Address(to, dword_count, Address::times_4, -4), rax);
1980     __ jmp(L_copy_bytes);
1981 
1982     // Copy trailing qwords
1983   __ BIND(L_copy_8_bytes);
1984     __ movq(rax, Address(from, qword_count, Address::times_8, -8));
1985     __ movq(Address(to, qword_count, Address::times_8, -8), rax);
1986     __ decrement(qword_count);
1987     __ jcc(Assembler::notZero, L_copy_8_bytes);
1988 
1989     if (is_oop) {
1990       __ jmp(L_exit);
1991     }
1992     restore_arg_regs_using_thread();
1993     inc_counter_np(SharedRuntime::_jint_array_copy_ctr); // Update counter after rscratch1 is free
1994     __ xorptr(rax, rax); // return 0
1995     __ vzeroupper();
1996     __ leave(); // required for proper stackwalking of RuntimeStub frame
1997     __ ret(0);
1998 
1999     // Copy in multi-bytes chunks
2000     copy_bytes_backward(from, to, qword_count, rax, L_copy_bytes, L_copy_8_bytes);
2001 
2002   __ BIND(L_exit);
2003     bs->arraycopy_epilogue(_masm, decorators, type, from, to, dword_count);
2004     restore_arg_regs_using_thread();
2005     inc_counter_np(SharedRuntime::_jint_array_copy_ctr); // Update counter after rscratch1 is free
2006     __ xorptr(rax, rax); // return 0
2007     __ vzeroupper();
2008     __ leave(); // required for proper stackwalking of RuntimeStub frame
2009     __ ret(0);
2010 
2011     return start;
2012   }
2013 
2014   // Arguments:
2015   //   aligned - true => Input and output aligned on a HeapWord boundary == 8 bytes
2016   //             ignored
2017   //   is_oop  - true => oop array, so generate store check code
2018   //   name    - stub name string
2019   //
2020   // Inputs:
2021   //   c_rarg0   - source array address
2022   //   c_rarg1   - destination array address
2023   //   c_rarg2   - element count, treated as ssize_t, can be zero
2024   //
2025  // Side Effects:
2026   //   disjoint_oop_copy_entry or disjoint_long_copy_entry is set to the
2027   //   no-overlap entry point used by generate_conjoint_long_oop_copy().
2028   //
2029   address generate_disjoint_long_oop_copy(bool aligned, bool is_oop, address *entry,
2030                                           const char *name, bool dest_uninitialized = false) {
2031     __ align(CodeEntryAlignment);
2032     StubCodeMark mark(this, "StubRoutines", name);
2033     address start = __ pc();
2034 
2035     Label L_copy_bytes, L_copy_8_bytes, L_exit;
2036     const Register from        = rdi;  // source array address
2037     const Register to          = rsi;  // destination array address
2038     const Register qword_count = rdx;  // elements count
2039     const Register end_from    = from; // source array end address
2040     const Register end_to      = rcx;  // destination array end address
2041     const Register saved_count = r11;
2042     // End pointers are inclusive, and if count is not zero they point
2043     // to the last unit copied:  end_to[0] := end_from[0]
2044 
2045     __ enter(); // required for proper stackwalking of RuntimeStub frame
2046     // Save no-overlap entry point for generate_conjoint_long_oop_copy()
2047     assert_clean_int(c_rarg2, rax);    // Make sure 'count' is clean int.
2048 
2049     if (entry != NULL) {
2050       *entry = __ pc();
2051       // caller can pass a 64-bit byte count here (from Unsafe.copyMemory)
2052       BLOCK_COMMENT("Entry:");
2053     }
2054 
2055     setup_arg_regs_using_thread(); // from => rdi, to => rsi, count => rdx
2056                                      // r9 is used to save r15_thread
2057     // 'from', 'to' and 'qword_count' are now valid
2058 
2059     DecoratorSet decorators = IN_HEAP | IS_ARRAY | ARRAYCOPY_DISJOINT;
2060     if (dest_uninitialized) {
2061       decorators |= IS_DEST_UNINITIALIZED;
2062     }
2063     if (aligned) {
2064       decorators |= ARRAYCOPY_ALIGNED;
2065     }
2066 
2067     BasicType type = is_oop ? T_OBJECT : T_LONG;
2068     BarrierSetAssembler *bs = BarrierSet::barrier_set()->barrier_set_assembler();
2069     bs->arraycopy_prologue(_masm, decorators, type, from, to, qword_count);
2070 
2071     // Copy from low to high addresses.  Use 'to' as scratch.
2072     __ lea(end_from, Address(from, qword_count, Address::times_8, -8));
2073     __ lea(end_to,   Address(to,   qword_count, Address::times_8, -8));
2074     __ negptr(qword_count);
2075     __ jmp(L_copy_bytes);
2076 
2077     // Copy trailing qwords
2078   __ BIND(L_copy_8_bytes);
2079     __ movq(rax, Address(end_from, qword_count, Address::times_8, 8));
2080     __ movq(Address(end_to, qword_count, Address::times_8, 8), rax);
2081     __ increment(qword_count);
2082     __ jcc(Assembler::notZero, L_copy_8_bytes);
2083 
2084     if (is_oop) {
2085       __ jmp(L_exit);
2086     } else {
2087       restore_arg_regs_using_thread();
2088       inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); // Update counter after rscratch1 is free
2089       __ xorptr(rax, rax); // return 0
2090       __ vzeroupper();
2091       __ leave(); // required for proper stackwalking of RuntimeStub frame
2092       __ ret(0);
2093     }
2094 
2095     // Copy in multi-bytes chunks
2096     copy_bytes_forward(end_from, end_to, qword_count, rax, L_copy_bytes, L_copy_8_bytes);
2097 
2098     __ BIND(L_exit);
2099     bs->arraycopy_epilogue(_masm, decorators, type, from, to, qword_count);
2100     restore_arg_regs_using_thread();
2101     if (is_oop) {
2102       inc_counter_np(SharedRuntime::_oop_array_copy_ctr); // Update counter after rscratch1 is free
2103     } else {
2104       inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); // Update counter after rscratch1 is free
2105     }
2106     __ vzeroupper();
2107     __ xorptr(rax, rax); // return 0
2108     __ leave(); // required for proper stackwalking of RuntimeStub frame
2109     __ ret(0);
2110 
2111     return start;
2112   }
2113 
2114   // Arguments:
2115   //   aligned - true => Input and output aligned on a HeapWord boundary == 8 bytes
2116   //             ignored
2117   //   is_oop  - true => oop array, so generate store check code
2118   //   name    - stub name string
2119   //
2120   // Inputs:
2121   //   c_rarg0   - source array address
2122   //   c_rarg1   - destination array address
2123   //   c_rarg2   - element count, treated as ssize_t, can be zero
2124   //
2125   address generate_conjoint_long_oop_copy(bool aligned, bool is_oop,
2126                                           address nooverlap_target, address *entry,
2127                                           const char *name, bool dest_uninitialized = false) {
2128     __ align(CodeEntryAlignment);
2129     StubCodeMark mark(this, "StubRoutines", name);
2130     address start = __ pc();
2131 
2132     Label L_copy_bytes, L_copy_8_bytes, L_exit;
2133     const Register from        = rdi;  // source array address
2134     const Register to          = rsi;  // destination array address
2135     const Register qword_count = rdx;  // elements count
2136     const Register saved_count = rcx;
2137 
2138     __ enter(); // required for proper stackwalking of RuntimeStub frame
2139     assert_clean_int(c_rarg2, rax);    // Make sure 'count' is clean int.
2140 
2141     if (entry != NULL) {
2142       *entry = __ pc();
2143       // caller can pass a 64-bit byte count here (from Unsafe.copyMemory)
2144       BLOCK_COMMENT("Entry:");
2145     }
2146 
2147     array_overlap_test(nooverlap_target, Address::times_8);
2148     setup_arg_regs_using_thread(); // from => rdi, to => rsi, count => rdx
2149                                    // r9 is used to save r15_thread
2150     // 'from', 'to' and 'qword_count' are now valid
2151 
2152     DecoratorSet decorators = IN_HEAP | IS_ARRAY | ARRAYCOPY_DISJOINT;
2153     if (dest_uninitialized) {
2154       decorators |= IS_DEST_UNINITIALIZED;
2155     }
2156     if (aligned) {
2157       decorators |= ARRAYCOPY_ALIGNED;
2158     }
2159 
2160     BasicType type = is_oop ? T_OBJECT : T_LONG;
2161     BarrierSetAssembler *bs = BarrierSet::barrier_set()->barrier_set_assembler();
2162     bs->arraycopy_prologue(_masm, decorators, type, from, to, qword_count);
2163 
2164     __ jmp(L_copy_bytes);
2165 
2166     // Copy trailing qwords
2167   __ BIND(L_copy_8_bytes);
2168     __ movq(rax, Address(from, qword_count, Address::times_8, -8));
2169     __ movq(Address(to, qword_count, Address::times_8, -8), rax);
2170     __ decrement(qword_count);
2171     __ jcc(Assembler::notZero, L_copy_8_bytes);
2172 
2173     if (is_oop) {
2174       __ jmp(L_exit);
2175     } else {
2176       restore_arg_regs_using_thread();
2177       inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); // Update counter after rscratch1 is free
2178       __ xorptr(rax, rax); // return 0
2179       __ vzeroupper();
2180       __ leave(); // required for proper stackwalking of RuntimeStub frame
2181       __ ret(0);
2182     }
2183 
2184     // Copy in multi-bytes chunks
2185     copy_bytes_backward(from, to, qword_count, rax, L_copy_bytes, L_copy_8_bytes);
2186 
2187     __ BIND(L_exit);
2188     bs->arraycopy_epilogue(_masm, decorators, type, from, to, qword_count);
2189     restore_arg_regs_using_thread();
2190     if (is_oop) {
2191       inc_counter_np(SharedRuntime::_oop_array_copy_ctr); // Update counter after rscratch1 is free
2192     } else {
2193       inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); // Update counter after rscratch1 is free
2194     }
2195     __ vzeroupper();
2196     __ xorptr(rax, rax); // return 0
2197     __ leave(); // required for proper stackwalking of RuntimeStub frame
2198     __ ret(0);
2199 
2200     return start;
2201   }
2202 
2203 
2204   // Helper for generating a dynamic type check.
2205   // Smashes no registers.
2206   void generate_type_check(Register sub_klass,
2207                            Register super_check_offset,
2208                            Register super_klass,
2209                            Label& L_success) {
2210     assert_different_registers(sub_klass, super_check_offset, super_klass);
2211 
2212     BLOCK_COMMENT("type_check:");
2213 
2214     Label L_miss;
2215 
2216     __ check_klass_subtype_fast_path(sub_klass, super_klass, noreg,        &L_success, &L_miss, NULL,
2217                                      super_check_offset);
2218     __ check_klass_subtype_slow_path(sub_klass, super_klass, noreg, noreg, &L_success, NULL);
2219 
2220     // Fall through on failure!
2221     __ BIND(L_miss);
2222   }
2223 
2224   //
2225   //  Generate checkcasting array copy stub
2226   //
2227   //  Input:
2228   //    c_rarg0   - source array address
2229   //    c_rarg1   - destination array address
2230   //    c_rarg2   - element count, treated as ssize_t, can be zero
2231   //    c_rarg3   - size_t ckoff (super_check_offset)
2232   // not Win64
2233   //    c_rarg4   - oop ckval (super_klass)
2234   // Win64
2235   //    rsp+40    - oop ckval (super_klass)
2236   //
2237   //  Output:
2238   //    rax ==  0  -  success
2239   //    rax == -1^K - failure, where K is partial transfer count
2240   //
2241   address generate_checkcast_copy(const char *name, address *entry,
2242                                   bool dest_uninitialized = false) {
2243 
2244     Label L_load_element, L_store_element, L_do_card_marks, L_done;
2245 
2246     // Input registers (after setup_arg_regs)
2247     const Register from        = rdi;   // source array address
2248     const Register to          = rsi;   // destination array address
2249     const Register length      = rdx;   // elements count
2250     const Register ckoff       = rcx;   // super_check_offset
2251     const Register ckval       = r8;    // super_klass
2252 
2253     // Registers used as temps (r13, r14 are save-on-entry)
2254     const Register end_from    = from;  // source array end address
2255     const Register end_to      = r13;   // destination array end address
2256     const Register count       = rdx;   // -(count_remaining)
2257     const Register r14_length  = r14;   // saved copy of length
2258     // End pointers are inclusive, and if length is not zero they point
2259     // to the last unit copied:  end_to[0] := end_from[0]
2260 
2261     const Register rax_oop    = rax;    // actual oop copied
2262     const Register r11_klass  = r11;    // oop._klass
2263 
2264     //---------------------------------------------------------------
2265     // Assembler stub will be used for this call to arraycopy
2266     // if the two arrays are subtypes of Object[] but the
2267     // destination array type is not equal to or a supertype
2268     // of the source type.  Each element must be separately
2269     // checked.
2270 
2271     __ align(CodeEntryAlignment);
2272     StubCodeMark mark(this, "StubRoutines", name);
2273     address start = __ pc();
2274 
2275     __ enter(); // required for proper stackwalking of RuntimeStub frame
2276 
2277 #ifdef ASSERT
2278     // caller guarantees that the arrays really are different
2279     // otherwise, we would have to make conjoint checks
2280     { Label L;
2281       array_overlap_test(L, TIMES_OOP);
2282       __ stop("checkcast_copy within a single array");
2283       __ bind(L);
2284     }
2285 #endif //ASSERT
2286 
2287     setup_arg_regs(4); // from => rdi, to => rsi, length => rdx
2288                        // ckoff => rcx, ckval => r8
2289                        // r9 and r10 may be used to save non-volatile registers
2290 #ifdef _WIN64
2291     // last argument (#4) is on stack on Win64
2292     __ movptr(ckval, Address(rsp, 6 * wordSize));
2293 #endif
2294 
2295     // Caller of this entry point must set up the argument registers.
2296     if (entry != NULL) {
2297       *entry = __ pc();
2298       BLOCK_COMMENT("Entry:");
2299     }
2300 
2301     // allocate spill slots for r13, r14
2302     enum {
2303       saved_r13_offset,
2304       saved_r14_offset,
2305       saved_r10_offset,
2306       saved_rbp_offset
2307     };
2308     __ subptr(rsp, saved_rbp_offset * wordSize);
2309     __ movptr(Address(rsp, saved_r13_offset * wordSize), r13);
2310     __ movptr(Address(rsp, saved_r14_offset * wordSize), r14);
2311     __ movptr(Address(rsp, saved_r10_offset * wordSize), r10);
2312 
2313 #ifdef ASSERT
2314       Label L2;
2315       __ get_thread(r14);
2316       __ cmpptr(r15_thread, r14);
2317       __ jcc(Assembler::equal, L2);
2318       __ stop("StubRoutines::call_stub: r15_thread is modified by call");
2319       __ bind(L2);
2320 #endif // ASSERT
2321 
2322     // check that int operands are properly extended to size_t
2323     assert_clean_int(length, rax);
2324     assert_clean_int(ckoff, rax);
2325 
2326 #ifdef ASSERT
2327     BLOCK_COMMENT("assert consistent ckoff/ckval");
2328     // The ckoff and ckval must be mutually consistent,
2329     // even though caller generates both.
2330     { Label L;
2331       int sco_offset = in_bytes(Klass::super_check_offset_offset());
2332       __ cmpl(ckoff, Address(ckval, sco_offset));
2333       __ jcc(Assembler::equal, L);
2334       __ stop("super_check_offset inconsistent");
2335       __ bind(L);
2336     }
2337 #endif //ASSERT
2338 
2339     // Loop-invariant addresses.  They are exclusive end pointers.
2340     Address end_from_addr(from, length, TIMES_OOP, 0);
2341     Address   end_to_addr(to,   length, TIMES_OOP, 0);
2342     // Loop-variant addresses.  They assume post-incremented count < 0.
2343     Address from_element_addr(end_from, count, TIMES_OOP, 0);
2344     Address   to_element_addr(end_to,   count, TIMES_OOP, 0);
2345 
2346     DecoratorSet decorators = IN_HEAP | IS_ARRAY | ARRAYCOPY_CHECKCAST;
2347     if (dest_uninitialized) {
2348       decorators |= IS_DEST_UNINITIALIZED;
2349     }
2350 
2351     BasicType type = T_OBJECT;
2352     BarrierSetAssembler *bs = BarrierSet::barrier_set()->barrier_set_assembler();
2353     bs->arraycopy_prologue(_masm, decorators, type, from, to, count);
2354 
2355     // Copy from low to high addresses, indexed from the end of each array.
2356     __ lea(end_from, end_from_addr);
2357     __ lea(end_to,   end_to_addr);
2358     __ movptr(r14_length, length);        // save a copy of the length
2359     assert(length == count, "");          // else fix next line:
2360     __ negptr(count);                     // negate and test the length
2361     __ jcc(Assembler::notZero, L_load_element);
2362 
2363     // Empty array:  Nothing to do.
2364     __ xorptr(rax, rax);                  // return 0 on (trivial) success
2365     __ jmp(L_done);
2366 
2367     // ======== begin loop ========
2368     // (Loop is rotated; its entry is L_load_element.)
2369     // Loop control:
2370     //   for (count = -count; count != 0; count++)
2371     // Base pointers src, dst are biased by 8*(count-1),to last element.
2372     __ align(OptoLoopAlignment);
2373 
2374     __ BIND(L_store_element);
2375     __ store_heap_oop(to_element_addr, rax_oop, noreg, noreg, AS_RAW);  // store the oop
2376     __ increment(count);               // increment the count toward zero
2377     __ jcc(Assembler::zero, L_do_card_marks);
2378 
2379     // ======== loop entry is here ========
2380     __ BIND(L_load_element);
2381     __ load_heap_oop(rax_oop, from_element_addr, noreg, noreg, AS_RAW); // load the oop
2382     __ testptr(rax_oop, rax_oop);
2383     __ jcc(Assembler::zero, L_store_element);
2384 
2385     __ load_klass(r11_klass, rax_oop);// query the object klass
2386     generate_type_check(r11_klass, ckoff, ckval, L_store_element);
2387     // ======== end loop ========
2388 
2389     // It was a real error; we must depend on the caller to finish the job.
2390     // Register rdx = -1 * number of *remaining* oops, r14 = *total* oops.
2391     // Emit GC store barriers for the oops we have copied (r14 + rdx),
2392     // and report their number to the caller.
2393     assert_different_registers(rax, r14_length, count, to, end_to, rcx, rscratch1);
2394     Label L_post_barrier;
2395     __ addptr(r14_length, count);     // K = (original - remaining) oops
2396     __ movptr(rax, r14_length);       // save the value
2397     __ notptr(rax);                   // report (-1^K) to caller (does not affect flags)
2398     __ jccb(Assembler::notZero, L_post_barrier);
2399     __ jmp(L_done); // K == 0, nothing was copied, skip post barrier
2400 
2401     // Come here on success only.
2402     __ BIND(L_do_card_marks);
2403     __ xorptr(rax, rax);              // return 0 on success
2404 
2405     __ BIND(L_post_barrier);
2406     bs->arraycopy_epilogue(_masm, decorators, type, from, to, r14_length);
2407 
2408     // Common exit point (success or failure).
2409     __ BIND(L_done);
2410     __ movptr(r13, Address(rsp, saved_r13_offset * wordSize));
2411     __ movptr(r14, Address(rsp, saved_r14_offset * wordSize));
2412     __ movptr(r10, Address(rsp, saved_r10_offset * wordSize));
2413     restore_arg_regs();
2414     inc_counter_np(SharedRuntime::_checkcast_array_copy_ctr); // Update counter after rscratch1 is free
2415     __ leave(); // required for proper stackwalking of RuntimeStub frame
2416     __ ret(0);
2417 
2418     return start;
2419   }
2420 
2421   //
2422   //  Generate 'unsafe' array copy stub
2423   //  Though just as safe as the other stubs, it takes an unscaled
2424   //  size_t argument instead of an element count.
2425   //
2426   //  Input:
2427   //    c_rarg0   - source array address
2428   //    c_rarg1   - destination array address
2429   //    c_rarg2   - byte count, treated as ssize_t, can be zero
2430   //
2431   // Examines the alignment of the operands and dispatches
2432   // to a long, int, short, or byte copy loop.
2433   //
2434   address generate_unsafe_copy(const char *name,
2435                                address byte_copy_entry, address short_copy_entry,
2436                                address int_copy_entry, address long_copy_entry) {
2437 
2438     Label L_long_aligned, L_int_aligned, L_short_aligned;
2439 
2440     // Input registers (before setup_arg_regs)
2441     const Register from        = c_rarg0;  // source array address
2442     const Register to          = c_rarg1;  // destination array address
2443     const Register size        = c_rarg2;  // byte count (size_t)
2444 
2445     // Register used as a temp
2446     const Register bits        = rax;      // test copy of low bits
2447 
2448     __ align(CodeEntryAlignment);
2449     StubCodeMark mark(this, "StubRoutines", name);
2450     address start = __ pc();
2451 
2452     __ enter(); // required for proper stackwalking of RuntimeStub frame
2453 
2454     // bump this on entry, not on exit:
2455     inc_counter_np(SharedRuntime::_unsafe_array_copy_ctr);
2456 
2457     __ mov(bits, from);
2458     __ orptr(bits, to);
2459     __ orptr(bits, size);
2460 
2461     __ testb(bits, BytesPerLong-1);
2462     __ jccb(Assembler::zero, L_long_aligned);
2463 
2464     __ testb(bits, BytesPerInt-1);
2465     __ jccb(Assembler::zero, L_int_aligned);
2466 
2467     __ testb(bits, BytesPerShort-1);
2468     __ jump_cc(Assembler::notZero, RuntimeAddress(byte_copy_entry));
2469 
2470     __ BIND(L_short_aligned);
2471     __ shrptr(size, LogBytesPerShort); // size => short_count
2472     __ jump(RuntimeAddress(short_copy_entry));
2473 
2474     __ BIND(L_int_aligned);
2475     __ shrptr(size, LogBytesPerInt); // size => int_count
2476     __ jump(RuntimeAddress(int_copy_entry));
2477 
2478     __ BIND(L_long_aligned);
2479     __ shrptr(size, LogBytesPerLong); // size => qword_count
2480     __ jump(RuntimeAddress(long_copy_entry));
2481 
2482     return start;
2483   }
2484 
2485   // Perform range checks on the proposed arraycopy.
2486   // Kills temp, but nothing else.
2487   // Also, clean the sign bits of src_pos and dst_pos.
2488   void arraycopy_range_checks(Register src,     // source array oop (c_rarg0)
2489                               Register src_pos, // source position (c_rarg1)
2490                               Register dst,     // destination array oo (c_rarg2)
2491                               Register dst_pos, // destination position (c_rarg3)
2492                               Register length,
2493                               Register temp,
2494                               Label& L_failed) {
2495     BLOCK_COMMENT("arraycopy_range_checks:");
2496 
2497     //  if (src_pos + length > arrayOop(src)->length())  FAIL;
2498     __ movl(temp, length);
2499     __ addl(temp, src_pos);             // src_pos + length
2500     __ cmpl(temp, Address(src, arrayOopDesc::length_offset_in_bytes()));
2501     __ jcc(Assembler::above, L_failed);
2502 
2503     //  if (dst_pos + length > arrayOop(dst)->length())  FAIL;
2504     __ movl(temp, length);
2505     __ addl(temp, dst_pos);             // dst_pos + length
2506     __ cmpl(temp, Address(dst, arrayOopDesc::length_offset_in_bytes()));
2507     __ jcc(Assembler::above, L_failed);
2508 
2509     // Have to clean up high 32-bits of 'src_pos' and 'dst_pos'.
2510     // Move with sign extension can be used since they are positive.
2511     __ movslq(src_pos, src_pos);
2512     __ movslq(dst_pos, dst_pos);
2513 
2514     BLOCK_COMMENT("arraycopy_range_checks done");
2515   }
2516 
2517   //
2518   //  Generate generic array copy stubs
2519   //
2520   //  Input:
2521   //    c_rarg0    -  src oop
2522   //    c_rarg1    -  src_pos (32-bits)
2523   //    c_rarg2    -  dst oop
2524   //    c_rarg3    -  dst_pos (32-bits)
2525   // not Win64
2526   //    c_rarg4    -  element count (32-bits)
2527   // Win64
2528   //    rsp+40     -  element count (32-bits)
2529   //
2530   //  Output:
2531   //    rax ==  0  -  success
2532   //    rax == -1^K - failure, where K is partial transfer count
2533   //
2534   address generate_generic_copy(const char *name,
2535                                 address byte_copy_entry, address short_copy_entry,
2536                                 address int_copy_entry, address oop_copy_entry,
2537                                 address long_copy_entry, address checkcast_copy_entry) {
2538 
2539     Label L_failed, L_failed_0, L_objArray;
2540     Label L_copy_bytes, L_copy_shorts, L_copy_ints, L_copy_longs;
2541 
2542     // Input registers
2543     const Register src        = c_rarg0;  // source array oop
2544     const Register src_pos    = c_rarg1;  // source position
2545     const Register dst        = c_rarg2;  // destination array oop
2546     const Register dst_pos    = c_rarg3;  // destination position
2547 #ifndef _WIN64
2548     const Register length     = c_rarg4;
2549 #else
2550     const Address  length(rsp, 6 * wordSize);  // elements count is on stack on Win64
2551 #endif
2552 
2553     { int modulus = CodeEntryAlignment;
2554       int target  = modulus - 5; // 5 = sizeof jmp(L_failed)
2555       int advance = target - (__ offset() % modulus);
2556       if (advance < 0)  advance += modulus;
2557       if (advance > 0)  __ nop(advance);
2558     }
2559     StubCodeMark mark(this, "StubRoutines", name);
2560 
2561     // Short-hop target to L_failed.  Makes for denser prologue code.
2562     __ BIND(L_failed_0);
2563     __ jmp(L_failed);
2564     assert(__ offset() % CodeEntryAlignment == 0, "no further alignment needed");
2565 
2566     __ align(CodeEntryAlignment);
2567     address start = __ pc();
2568 
2569     __ enter(); // required for proper stackwalking of RuntimeStub frame
2570 
2571     // bump this on entry, not on exit:
2572     inc_counter_np(SharedRuntime::_generic_array_copy_ctr);
2573 
2574     //-----------------------------------------------------------------------
2575     // Assembler stub will be used for this call to arraycopy
2576     // if the following conditions are met:
2577     //
2578     // (1) src and dst must not be null.
2579     // (2) src_pos must not be negative.
2580     // (3) dst_pos must not be negative.
2581     // (4) length  must not be negative.
2582     // (5) src klass and dst klass should be the same and not NULL.
2583     // (6) src and dst should be arrays.
2584     // (7) src_pos + length must not exceed length of src.
2585     // (8) dst_pos + length must not exceed length of dst.
2586     //
2587 
2588     //  if (src == NULL) return -1;
2589     __ testptr(src, src);         // src oop
2590     size_t j1off = __ offset();
2591     __ jccb(Assembler::zero, L_failed_0);
2592 
2593     //  if (src_pos < 0) return -1;
2594     __ testl(src_pos, src_pos); // src_pos (32-bits)
2595     __ jccb(Assembler::negative, L_failed_0);
2596 
2597     //  if (dst == NULL) return -1;
2598     __ testptr(dst, dst);         // dst oop
2599     __ jccb(Assembler::zero, L_failed_0);
2600 
2601     //  if (dst_pos < 0) return -1;
2602     __ testl(dst_pos, dst_pos); // dst_pos (32-bits)
2603     size_t j4off = __ offset();
2604     __ jccb(Assembler::negative, L_failed_0);
2605 
2606     // The first four tests are very dense code,
2607     // but not quite dense enough to put four
2608     // jumps in a 16-byte instruction fetch buffer.
2609     // That's good, because some branch predicters
2610     // do not like jumps so close together.
2611     // Make sure of this.
2612     guarantee(((j1off ^ j4off) & ~15) != 0, "I$ line of 1st & 4th jumps");
2613 
2614     // registers used as temp
2615     const Register r11_length    = r11; // elements count to copy
2616     const Register r10_src_klass = r10; // array klass
2617 
2618     //  if (length < 0) return -1;
2619     __ movl(r11_length, length);        // length (elements count, 32-bits value)
2620     __ testl(r11_length, r11_length);
2621     __ jccb(Assembler::negative, L_failed_0);
2622 
2623     __ load_klass(r10_src_klass, src);
2624 #ifdef ASSERT
2625     //  assert(src->klass() != NULL);
2626     {
2627       BLOCK_COMMENT("assert klasses not null {");
2628       Label L1, L2;
2629       __ testptr(r10_src_klass, r10_src_klass);
2630       __ jcc(Assembler::notZero, L2);   // it is broken if klass is NULL
2631       __ bind(L1);
2632       __ stop("broken null klass");
2633       __ bind(L2);
2634       __ load_klass(rax, dst);
2635       __ cmpq(rax, 0);
2636       __ jcc(Assembler::equal, L1);     // this would be broken also
2637       BLOCK_COMMENT("} assert klasses not null done");
2638     }
2639 #endif
2640 
2641     // Load layout helper (32-bits)
2642     //
2643     //  |array_tag|     | header_size | element_type |     |log2_element_size|
2644     // 32        30    24            16              8     2                 0
2645     //
2646     //   array_tag: typeArray = 0x3, objArray = 0x2, non-array = 0x0
2647     //
2648 
2649     const int lh_offset = in_bytes(Klass::layout_helper_offset());
2650 
2651     // Handle objArrays completely differently...
2652     const jint objArray_lh = Klass::array_layout_helper(T_OBJECT);
2653     __ cmpl(Address(r10_src_klass, lh_offset), objArray_lh);
2654     __ jcc(Assembler::equal, L_objArray);
2655 
2656     //  if (src->klass() != dst->klass()) return -1;
2657     __ load_klass(rax, dst);
2658     __ cmpq(r10_src_klass, rax);
2659     __ jcc(Assembler::notEqual, L_failed);
2660 
2661     const Register rax_lh = rax;  // layout helper
2662     __ movl(rax_lh, Address(r10_src_klass, lh_offset));
2663 
2664     //  if (!src->is_Array()) return -1;
2665     __ cmpl(rax_lh, Klass::_lh_neutral_value);
2666     __ jcc(Assembler::greaterEqual, L_failed);
2667 
2668     // At this point, it is known to be a typeArray (array_tag 0x3).
2669 #ifdef ASSERT
2670     {
2671       BLOCK_COMMENT("assert primitive array {");
2672       Label L;
2673       __ cmpl(rax_lh, (Klass::_lh_array_tag_type_value << Klass::_lh_array_tag_shift));
2674       __ jcc(Assembler::greaterEqual, L);
2675       __ stop("must be a primitive array");
2676       __ bind(L);
2677       BLOCK_COMMENT("} assert primitive array done");
2678     }
2679 #endif
2680 
2681     arraycopy_range_checks(src, src_pos, dst, dst_pos, r11_length,
2682                            r10, L_failed);
2683 
2684     // TypeArrayKlass
2685     //
2686     // src_addr = (src + array_header_in_bytes()) + (src_pos << log2elemsize);
2687     // dst_addr = (dst + array_header_in_bytes()) + (dst_pos << log2elemsize);
2688     //
2689 
2690     const Register r10_offset = r10;    // array offset
2691     const Register rax_elsize = rax_lh; // element size
2692 
2693     __ movl(r10_offset, rax_lh);
2694     __ shrl(r10_offset, Klass::_lh_header_size_shift);
2695     __ andptr(r10_offset, Klass::_lh_header_size_mask);   // array_offset
2696     __ addptr(src, r10_offset);           // src array offset
2697     __ addptr(dst, r10_offset);           // dst array offset
2698     BLOCK_COMMENT("choose copy loop based on element size");
2699     __ andl(rax_lh, Klass::_lh_log2_element_size_mask); // rax_lh -> rax_elsize
2700 
2701     // next registers should be set before the jump to corresponding stub
2702     const Register from     = c_rarg0;  // source array address
2703     const Register to       = c_rarg1;  // destination array address
2704     const Register count    = c_rarg2;  // elements count
2705 
2706     // 'from', 'to', 'count' registers should be set in such order
2707     // since they are the same as 'src', 'src_pos', 'dst'.
2708 
2709   __ BIND(L_copy_bytes);
2710     __ cmpl(rax_elsize, 0);
2711     __ jccb(Assembler::notEqual, L_copy_shorts);
2712     __ lea(from, Address(src, src_pos, Address::times_1, 0));// src_addr
2713     __ lea(to,   Address(dst, dst_pos, Address::times_1, 0));// dst_addr
2714     __ movl2ptr(count, r11_length); // length
2715     __ jump(RuntimeAddress(byte_copy_entry));
2716 
2717   __ BIND(L_copy_shorts);
2718     __ cmpl(rax_elsize, LogBytesPerShort);
2719     __ jccb(Assembler::notEqual, L_copy_ints);
2720     __ lea(from, Address(src, src_pos, Address::times_2, 0));// src_addr
2721     __ lea(to,   Address(dst, dst_pos, Address::times_2, 0));// dst_addr
2722     __ movl2ptr(count, r11_length); // length
2723     __ jump(RuntimeAddress(short_copy_entry));
2724 
2725   __ BIND(L_copy_ints);
2726     __ cmpl(rax_elsize, LogBytesPerInt);
2727     __ jccb(Assembler::notEqual, L_copy_longs);
2728     __ lea(from, Address(src, src_pos, Address::times_4, 0));// src_addr
2729     __ lea(to,   Address(dst, dst_pos, Address::times_4, 0));// dst_addr
2730     __ movl2ptr(count, r11_length); // length
2731     __ jump(RuntimeAddress(int_copy_entry));
2732 
2733   __ BIND(L_copy_longs);
2734 #ifdef ASSERT
2735     {
2736       BLOCK_COMMENT("assert long copy {");
2737       Label L;
2738       __ cmpl(rax_elsize, LogBytesPerLong);
2739       __ jcc(Assembler::equal, L);
2740       __ stop("must be long copy, but elsize is wrong");
2741       __ bind(L);
2742       BLOCK_COMMENT("} assert long copy done");
2743     }
2744 #endif
2745     __ lea(from, Address(src, src_pos, Address::times_8, 0));// src_addr
2746     __ lea(to,   Address(dst, dst_pos, Address::times_8, 0));// dst_addr
2747     __ movl2ptr(count, r11_length); // length
2748     __ jump(RuntimeAddress(long_copy_entry));
2749 
2750     // ObjArrayKlass
2751   __ BIND(L_objArray);
2752     // live at this point:  r10_src_klass, r11_length, src[_pos], dst[_pos]
2753 
2754     Label L_plain_copy, L_checkcast_copy;
2755     //  test array classes for subtyping
2756     __ load_klass(rax, dst);
2757     __ cmpq(r10_src_klass, rax); // usual case is exact equality
2758     __ jcc(Assembler::notEqual, L_checkcast_copy);
2759 
2760     // Identically typed arrays can be copied without element-wise checks.
2761     arraycopy_range_checks(src, src_pos, dst, dst_pos, r11_length,
2762                            r10, L_failed);
2763 
2764     __ lea(from, Address(src, src_pos, TIMES_OOP,
2765                  arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // src_addr
2766     __ lea(to,   Address(dst, dst_pos, TIMES_OOP,
2767                  arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // dst_addr
2768     __ movl2ptr(count, r11_length); // length
2769   __ BIND(L_plain_copy);
2770     __ jump(RuntimeAddress(oop_copy_entry));
2771 
2772   __ BIND(L_checkcast_copy);
2773     // live at this point:  r10_src_klass, r11_length, rax (dst_klass)
2774     {
2775       // Before looking at dst.length, make sure dst is also an objArray.
2776       __ cmpl(Address(rax, lh_offset), objArray_lh);
2777       __ jcc(Assembler::notEqual, L_failed);
2778 
2779       // It is safe to examine both src.length and dst.length.
2780       arraycopy_range_checks(src, src_pos, dst, dst_pos, r11_length,
2781                              rax, L_failed);
2782 
2783       const Register r11_dst_klass = r11;
2784       __ load_klass(r11_dst_klass, dst); // reload
2785 
2786       // Marshal the base address arguments now, freeing registers.
2787       __ lea(from, Address(src, src_pos, TIMES_OOP,
2788                    arrayOopDesc::base_offset_in_bytes(T_OBJECT)));
2789       __ lea(to,   Address(dst, dst_pos, TIMES_OOP,
2790                    arrayOopDesc::base_offset_in_bytes(T_OBJECT)));
2791       __ movl(count, length);           // length (reloaded)
2792       Register sco_temp = c_rarg3;      // this register is free now
2793       assert_different_registers(from, to, count, sco_temp,
2794                                  r11_dst_klass, r10_src_klass);
2795       assert_clean_int(count, sco_temp);
2796 
2797       // Generate the type check.
2798       const int sco_offset = in_bytes(Klass::super_check_offset_offset());
2799       __ movl(sco_temp, Address(r11_dst_klass, sco_offset));
2800       assert_clean_int(sco_temp, rax);
2801       generate_type_check(r10_src_klass, sco_temp, r11_dst_klass, L_plain_copy);
2802 
2803       // Fetch destination element klass from the ObjArrayKlass header.
2804       int ek_offset = in_bytes(ObjArrayKlass::element_klass_offset());
2805       __ movptr(r11_dst_klass, Address(r11_dst_klass, ek_offset));
2806       __ movl(  sco_temp,      Address(r11_dst_klass, sco_offset));
2807       assert_clean_int(sco_temp, rax);
2808 
2809       // the checkcast_copy loop needs two extra arguments:
2810       assert(c_rarg3 == sco_temp, "#3 already in place");
2811       // Set up arguments for checkcast_copy_entry.
2812       setup_arg_regs(4);
2813       __ movptr(r8, r11_dst_klass);  // dst.klass.element_klass, r8 is c_rarg4 on Linux/Solaris
2814       __ jump(RuntimeAddress(checkcast_copy_entry));
2815     }
2816 
2817   __ BIND(L_failed);
2818     __ xorptr(rax, rax);
2819     __ notptr(rax); // return -1
2820     __ leave();   // required for proper stackwalking of RuntimeStub frame
2821     __ ret(0);
2822 
2823     return start;
2824   }
2825 
2826   void generate_arraycopy_stubs() {
2827     address entry;
2828     address entry_jbyte_arraycopy;
2829     address entry_jshort_arraycopy;
2830     address entry_jint_arraycopy;
2831     address entry_oop_arraycopy;
2832     address entry_jlong_arraycopy;
2833     address entry_checkcast_arraycopy;
2834 
2835     StubRoutines::_jbyte_disjoint_arraycopy  = generate_disjoint_byte_copy(false, &entry,
2836                                                                            "jbyte_disjoint_arraycopy");
2837     StubRoutines::_jbyte_arraycopy           = generate_conjoint_byte_copy(false, entry, &entry_jbyte_arraycopy,
2838                                                                            "jbyte_arraycopy");
2839 
2840     StubRoutines::_jshort_disjoint_arraycopy = generate_disjoint_short_copy(false, &entry,
2841                                                                             "jshort_disjoint_arraycopy");
2842     StubRoutines::_jshort_arraycopy          = generate_conjoint_short_copy(false, entry, &entry_jshort_arraycopy,
2843                                                                             "jshort_arraycopy");
2844 
2845     StubRoutines::_jint_disjoint_arraycopy   = generate_disjoint_int_oop_copy(false, false, &entry,
2846                                                                               "jint_disjoint_arraycopy");
2847     StubRoutines::_jint_arraycopy            = generate_conjoint_int_oop_copy(false, false, entry,
2848                                                                               &entry_jint_arraycopy, "jint_arraycopy");
2849 
2850     StubRoutines::_jlong_disjoint_arraycopy  = generate_disjoint_long_oop_copy(false, false, &entry,
2851                                                                                "jlong_disjoint_arraycopy");
2852     StubRoutines::_jlong_arraycopy           = generate_conjoint_long_oop_copy(false, false, entry,
2853                                                                                &entry_jlong_arraycopy, "jlong_arraycopy");
2854 
2855 
2856     if (UseCompressedOops) {
2857       StubRoutines::_oop_disjoint_arraycopy  = generate_disjoint_int_oop_copy(false, true, &entry,
2858                                                                               "oop_disjoint_arraycopy");
2859       StubRoutines::_oop_arraycopy           = generate_conjoint_int_oop_copy(false, true, entry,
2860                                                                               &entry_oop_arraycopy, "oop_arraycopy");
2861       StubRoutines::_oop_disjoint_arraycopy_uninit  = generate_disjoint_int_oop_copy(false, true, &entry,
2862                                                                                      "oop_disjoint_arraycopy_uninit",
2863                                                                                      /*dest_uninitialized*/true);
2864       StubRoutines::_oop_arraycopy_uninit           = generate_conjoint_int_oop_copy(false, true, entry,
2865                                                                                      NULL, "oop_arraycopy_uninit",
2866                                                                                      /*dest_uninitialized*/true);
2867     } else {
2868       StubRoutines::_oop_disjoint_arraycopy  = generate_disjoint_long_oop_copy(false, true, &entry,
2869                                                                                "oop_disjoint_arraycopy");
2870       StubRoutines::_oop_arraycopy           = generate_conjoint_long_oop_copy(false, true, entry,
2871                                                                                &entry_oop_arraycopy, "oop_arraycopy");
2872       StubRoutines::_oop_disjoint_arraycopy_uninit  = generate_disjoint_long_oop_copy(false, true, &entry,
2873                                                                                       "oop_disjoint_arraycopy_uninit",
2874                                                                                       /*dest_uninitialized*/true);
2875       StubRoutines::_oop_arraycopy_uninit           = generate_conjoint_long_oop_copy(false, true, entry,
2876                                                                                       NULL, "oop_arraycopy_uninit",
2877                                                                                       /*dest_uninitialized*/true);
2878     }
2879 
2880     StubRoutines::_checkcast_arraycopy        = generate_checkcast_copy("checkcast_arraycopy", &entry_checkcast_arraycopy);
2881     StubRoutines::_checkcast_arraycopy_uninit = generate_checkcast_copy("checkcast_arraycopy_uninit", NULL,
2882                                                                         /*dest_uninitialized*/true);
2883 
2884     StubRoutines::_unsafe_arraycopy    = generate_unsafe_copy("unsafe_arraycopy",
2885                                                               entry_jbyte_arraycopy,
2886                                                               entry_jshort_arraycopy,
2887                                                               entry_jint_arraycopy,
2888                                                               entry_jlong_arraycopy);
2889     StubRoutines::_generic_arraycopy   = generate_generic_copy("generic_arraycopy",
2890                                                                entry_jbyte_arraycopy,
2891                                                                entry_jshort_arraycopy,
2892                                                                entry_jint_arraycopy,
2893                                                                entry_oop_arraycopy,
2894                                                                entry_jlong_arraycopy,
2895                                                                entry_checkcast_arraycopy);
2896 
2897     StubRoutines::_jbyte_fill = generate_fill(T_BYTE, false, "jbyte_fill");
2898     StubRoutines::_jshort_fill = generate_fill(T_SHORT, false, "jshort_fill");
2899     StubRoutines::_jint_fill = generate_fill(T_INT, false, "jint_fill");
2900     StubRoutines::_arrayof_jbyte_fill = generate_fill(T_BYTE, true, "arrayof_jbyte_fill");
2901     StubRoutines::_arrayof_jshort_fill = generate_fill(T_SHORT, true, "arrayof_jshort_fill");
2902     StubRoutines::_arrayof_jint_fill = generate_fill(T_INT, true, "arrayof_jint_fill");
2903 
2904     // We don't generate specialized code for HeapWord-aligned source
2905     // arrays, so just use the code we've already generated
2906     StubRoutines::_arrayof_jbyte_disjoint_arraycopy  = StubRoutines::_jbyte_disjoint_arraycopy;
2907     StubRoutines::_arrayof_jbyte_arraycopy           = StubRoutines::_jbyte_arraycopy;
2908 
2909     StubRoutines::_arrayof_jshort_disjoint_arraycopy = StubRoutines::_jshort_disjoint_arraycopy;
2910     StubRoutines::_arrayof_jshort_arraycopy          = StubRoutines::_jshort_arraycopy;
2911 
2912     StubRoutines::_arrayof_jint_disjoint_arraycopy   = StubRoutines::_jint_disjoint_arraycopy;
2913     StubRoutines::_arrayof_jint_arraycopy            = StubRoutines::_jint_arraycopy;
2914 
2915     StubRoutines::_arrayof_jlong_disjoint_arraycopy  = StubRoutines::_jlong_disjoint_arraycopy;
2916     StubRoutines::_arrayof_jlong_arraycopy           = StubRoutines::_jlong_arraycopy;
2917 
2918     StubRoutines::_arrayof_oop_disjoint_arraycopy    = StubRoutines::_oop_disjoint_arraycopy;
2919     StubRoutines::_arrayof_oop_arraycopy             = StubRoutines::_oop_arraycopy;
2920 
2921     StubRoutines::_arrayof_oop_disjoint_arraycopy_uninit    = StubRoutines::_oop_disjoint_arraycopy_uninit;
2922     StubRoutines::_arrayof_oop_arraycopy_uninit             = StubRoutines::_oop_arraycopy_uninit;
2923   }
2924 
2925   // AES intrinsic stubs
2926   enum {AESBlockSize = 16};
2927 
2928   address generate_key_shuffle_mask() {
2929     __ align(16);
2930     StubCodeMark mark(this, "StubRoutines", "key_shuffle_mask");
2931     address start = __ pc();
2932     __ emit_data64( 0x0405060700010203, relocInfo::none );
2933     __ emit_data64( 0x0c0d0e0f08090a0b, relocInfo::none );
2934     return start;
2935   }
2936 
2937   address generate_counter_shuffle_mask() {
2938     __ align(16);
2939     StubCodeMark mark(this, "StubRoutines", "counter_shuffle_mask");
2940     address start = __ pc();
2941     __ emit_data64(0x08090a0b0c0d0e0f, relocInfo::none);
2942     __ emit_data64(0x0001020304050607, relocInfo::none);
2943     return start;
2944   }
2945 
2946   // Utility routine for loading a 128-bit key word in little endian format
2947   // can optionally specify that the shuffle mask is already in an xmmregister
2948   void load_key(XMMRegister xmmdst, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) {
2949     __ movdqu(xmmdst, Address(key, offset));
2950     if (xmm_shuf_mask != NULL) {
2951       __ pshufb(xmmdst, xmm_shuf_mask);
2952     } else {
2953       __ pshufb(xmmdst, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr()));
2954     }
2955   }
2956 
2957   // Utility routine for increase 128bit counter (iv in CTR mode)
2958   void inc_counter(Register reg, XMMRegister xmmdst, int inc_delta, Label& next_block) {
2959     __ pextrq(reg, xmmdst, 0x0);
2960     __ addq(reg, inc_delta);
2961     __ pinsrq(xmmdst, reg, 0x0);
2962     __ jcc(Assembler::carryClear, next_block); // jump if no carry
2963     __ pextrq(reg, xmmdst, 0x01); // Carry
2964     __ addq(reg, 0x01);
2965     __ pinsrq(xmmdst, reg, 0x01); //Carry end
2966     __ BIND(next_block);          // next instruction
2967   }
2968 
2969   // Arguments:
2970   //
2971   // Inputs:
2972   //   c_rarg0   - source byte array address
2973   //   c_rarg1   - destination byte array address
2974   //   c_rarg2   - K (key) in little endian int array
2975   //
2976   address generate_aescrypt_encryptBlock() {
2977     assert(UseAES, "need AES instructions and misaligned SSE support");
2978     __ align(CodeEntryAlignment);
2979     StubCodeMark mark(this, "StubRoutines", "aescrypt_encryptBlock");
2980     Label L_doLast;
2981     address start = __ pc();
2982 
2983     const Register from        = c_rarg0;  // source array address
2984     const Register to          = c_rarg1;  // destination array address
2985     const Register key         = c_rarg2;  // key array address
2986     const Register keylen      = rax;
2987 
2988     const XMMRegister xmm_result = xmm0;
2989     const XMMRegister xmm_key_shuf_mask = xmm1;
2990     // On win64 xmm6-xmm15 must be preserved so don't use them.
2991     const XMMRegister xmm_temp1  = xmm2;
2992     const XMMRegister xmm_temp2  = xmm3;
2993     const XMMRegister xmm_temp3  = xmm4;
2994     const XMMRegister xmm_temp4  = xmm5;
2995 
2996     __ enter(); // required for proper stackwalking of RuntimeStub frame
2997 
2998     // keylen could be only {11, 13, 15} * 4 = {44, 52, 60}
2999     __ movl(keylen, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT)));
3000 
3001     __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr()));
3002     __ movdqu(xmm_result, Address(from, 0));  // get 16 bytes of input
3003 
3004     // For encryption, the java expanded key ordering is just what we need
3005     // we don't know if the key is aligned, hence not using load-execute form
3006 
3007     load_key(xmm_temp1, key, 0x00, xmm_key_shuf_mask);
3008     __ pxor(xmm_result, xmm_temp1);
3009 
3010     load_key(xmm_temp1, key, 0x10, xmm_key_shuf_mask);
3011     load_key(xmm_temp2, key, 0x20, xmm_key_shuf_mask);
3012     load_key(xmm_temp3, key, 0x30, xmm_key_shuf_mask);
3013     load_key(xmm_temp4, key, 0x40, xmm_key_shuf_mask);
3014 
3015     __ aesenc(xmm_result, xmm_temp1);
3016     __ aesenc(xmm_result, xmm_temp2);
3017     __ aesenc(xmm_result, xmm_temp3);
3018     __ aesenc(xmm_result, xmm_temp4);
3019 
3020     load_key(xmm_temp1, key, 0x50, xmm_key_shuf_mask);
3021     load_key(xmm_temp2, key, 0x60, xmm_key_shuf_mask);
3022     load_key(xmm_temp3, key, 0x70, xmm_key_shuf_mask);
3023     load_key(xmm_temp4, key, 0x80, xmm_key_shuf_mask);
3024 
3025     __ aesenc(xmm_result, xmm_temp1);
3026     __ aesenc(xmm_result, xmm_temp2);
3027     __ aesenc(xmm_result, xmm_temp3);
3028     __ aesenc(xmm_result, xmm_temp4);
3029 
3030     load_key(xmm_temp1, key, 0x90, xmm_key_shuf_mask);
3031     load_key(xmm_temp2, key, 0xa0, xmm_key_shuf_mask);
3032 
3033     __ cmpl(keylen, 44);
3034     __ jccb(Assembler::equal, L_doLast);
3035 
3036     __ aesenc(xmm_result, xmm_temp1);
3037     __ aesenc(xmm_result, xmm_temp2);
3038 
3039     load_key(xmm_temp1, key, 0xb0, xmm_key_shuf_mask);
3040     load_key(xmm_temp2, key, 0xc0, xmm_key_shuf_mask);
3041 
3042     __ cmpl(keylen, 52);
3043     __ jccb(Assembler::equal, L_doLast);
3044 
3045     __ aesenc(xmm_result, xmm_temp1);
3046     __ aesenc(xmm_result, xmm_temp2);
3047 
3048     load_key(xmm_temp1, key, 0xd0, xmm_key_shuf_mask);
3049     load_key(xmm_temp2, key, 0xe0, xmm_key_shuf_mask);
3050 
3051     __ BIND(L_doLast);
3052     __ aesenc(xmm_result, xmm_temp1);
3053     __ aesenclast(xmm_result, xmm_temp2);
3054     __ movdqu(Address(to, 0), xmm_result);        // store the result
3055     __ xorptr(rax, rax); // return 0
3056     __ leave(); // required for proper stackwalking of RuntimeStub frame
3057     __ ret(0);
3058 
3059     return start;
3060   }
3061 
3062 
3063   // Arguments:
3064   //
3065   // Inputs:
3066   //   c_rarg0   - source byte array address
3067   //   c_rarg1   - destination byte array address
3068   //   c_rarg2   - K (key) in little endian int array
3069   //
3070   address generate_aescrypt_decryptBlock() {
3071     assert(UseAES, "need AES instructions and misaligned SSE support");
3072     __ align(CodeEntryAlignment);
3073     StubCodeMark mark(this, "StubRoutines", "aescrypt_decryptBlock");
3074     Label L_doLast;
3075     address start = __ pc();
3076 
3077     const Register from        = c_rarg0;  // source array address
3078     const Register to          = c_rarg1;  // destination array address
3079     const Register key         = c_rarg2;  // key array address
3080     const Register keylen      = rax;
3081 
3082     const XMMRegister xmm_result = xmm0;
3083     const XMMRegister xmm_key_shuf_mask = xmm1;
3084     // On win64 xmm6-xmm15 must be preserved so don't use them.
3085     const XMMRegister xmm_temp1  = xmm2;
3086     const XMMRegister xmm_temp2  = xmm3;
3087     const XMMRegister xmm_temp3  = xmm4;
3088     const XMMRegister xmm_temp4  = xmm5;
3089 
3090     __ enter(); // required for proper stackwalking of RuntimeStub frame
3091 
3092     // keylen could be only {11, 13, 15} * 4 = {44, 52, 60}
3093     __ movl(keylen, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT)));
3094 
3095     __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr()));
3096     __ movdqu(xmm_result, Address(from, 0));
3097 
3098     // for decryption java expanded key ordering is rotated one position from what we want
3099     // so we start from 0x10 here and hit 0x00 last
3100     // we don't know if the key is aligned, hence not using load-execute form
3101     load_key(xmm_temp1, key, 0x10, xmm_key_shuf_mask);
3102     load_key(xmm_temp2, key, 0x20, xmm_key_shuf_mask);
3103     load_key(xmm_temp3, key, 0x30, xmm_key_shuf_mask);
3104     load_key(xmm_temp4, key, 0x40, xmm_key_shuf_mask);
3105 
3106     __ pxor  (xmm_result, xmm_temp1);
3107     __ aesdec(xmm_result, xmm_temp2);
3108     __ aesdec(xmm_result, xmm_temp3);
3109     __ aesdec(xmm_result, xmm_temp4);
3110 
3111     load_key(xmm_temp1, key, 0x50, xmm_key_shuf_mask);
3112     load_key(xmm_temp2, key, 0x60, xmm_key_shuf_mask);
3113     load_key(xmm_temp3, key, 0x70, xmm_key_shuf_mask);
3114     load_key(xmm_temp4, key, 0x80, xmm_key_shuf_mask);
3115 
3116     __ aesdec(xmm_result, xmm_temp1);
3117     __ aesdec(xmm_result, xmm_temp2);
3118     __ aesdec(xmm_result, xmm_temp3);
3119     __ aesdec(xmm_result, xmm_temp4);
3120 
3121     load_key(xmm_temp1, key, 0x90, xmm_key_shuf_mask);
3122     load_key(xmm_temp2, key, 0xa0, xmm_key_shuf_mask);
3123     load_key(xmm_temp3, key, 0x00, xmm_key_shuf_mask);
3124 
3125     __ cmpl(keylen, 44);
3126     __ jccb(Assembler::equal, L_doLast);
3127 
3128     __ aesdec(xmm_result, xmm_temp1);
3129     __ aesdec(xmm_result, xmm_temp2);
3130 
3131     load_key(xmm_temp1, key, 0xb0, xmm_key_shuf_mask);
3132     load_key(xmm_temp2, key, 0xc0, xmm_key_shuf_mask);
3133 
3134     __ cmpl(keylen, 52);
3135     __ jccb(Assembler::equal, L_doLast);
3136 
3137     __ aesdec(xmm_result, xmm_temp1);
3138     __ aesdec(xmm_result, xmm_temp2);
3139 
3140     load_key(xmm_temp1, key, 0xd0, xmm_key_shuf_mask);
3141     load_key(xmm_temp2, key, 0xe0, xmm_key_shuf_mask);
3142 
3143     __ BIND(L_doLast);
3144     __ aesdec(xmm_result, xmm_temp1);
3145     __ aesdec(xmm_result, xmm_temp2);
3146 
3147     // for decryption the aesdeclast operation is always on key+0x00
3148     __ aesdeclast(xmm_result, xmm_temp3);
3149     __ movdqu(Address(to, 0), xmm_result);  // store the result
3150     __ xorptr(rax, rax); // return 0
3151     __ leave(); // required for proper stackwalking of RuntimeStub frame
3152     __ ret(0);
3153 
3154     return start;
3155   }
3156 
3157 
3158   // Arguments:
3159   //
3160   // Inputs:
3161   //   c_rarg0   - source byte array address
3162   //   c_rarg1   - destination byte array address
3163   //   c_rarg2   - K (key) in little endian int array
3164   //   c_rarg3   - r vector byte array address
3165   //   c_rarg4   - input length
3166   //
3167   // Output:
3168   //   rax       - input length
3169   //
3170   address generate_cipherBlockChaining_encryptAESCrypt() {
3171     assert(UseAES, "need AES instructions and misaligned SSE support");
3172     __ align(CodeEntryAlignment);
3173     StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_encryptAESCrypt");
3174     address start = __ pc();
3175 
3176     Label L_exit, L_key_192_256, L_key_256, L_loopTop_128, L_loopTop_192, L_loopTop_256;
3177     const Register from        = c_rarg0;  // source array address
3178     const Register to          = c_rarg1;  // destination array address
3179     const Register key         = c_rarg2;  // key array address
3180     const Register rvec        = c_rarg3;  // r byte array initialized from initvector array address
3181                                            // and left with the results of the last encryption block
3182 #ifndef _WIN64
3183     const Register len_reg     = c_rarg4;  // src len (must be multiple of blocksize 16)
3184 #else
3185     const Address  len_mem(rbp, 6 * wordSize);  // length is on stack on Win64
3186     const Register len_reg     = r11;      // pick the volatile windows register
3187 #endif
3188     const Register pos         = rax;
3189 
3190     // xmm register assignments for the loops below
3191     const XMMRegister xmm_result = xmm0;
3192     const XMMRegister xmm_temp   = xmm1;
3193     // keys 0-10 preloaded into xmm2-xmm12
3194     const int XMM_REG_NUM_KEY_FIRST = 2;
3195     const int XMM_REG_NUM_KEY_LAST  = 15;
3196     const XMMRegister xmm_key0   = as_XMMRegister(XMM_REG_NUM_KEY_FIRST);
3197     const XMMRegister xmm_key10  = as_XMMRegister(XMM_REG_NUM_KEY_FIRST+10);
3198     const XMMRegister xmm_key11  = as_XMMRegister(XMM_REG_NUM_KEY_FIRST+11);
3199     const XMMRegister xmm_key12  = as_XMMRegister(XMM_REG_NUM_KEY_FIRST+12);
3200     const XMMRegister xmm_key13  = as_XMMRegister(XMM_REG_NUM_KEY_FIRST+13);
3201 
3202     __ enter(); // required for proper stackwalking of RuntimeStub frame
3203 
3204 #ifdef _WIN64
3205     // on win64, fill len_reg from stack position
3206     __ movl(len_reg, len_mem);
3207 #else
3208     __ push(len_reg); // Save
3209 #endif
3210 
3211     const XMMRegister xmm_key_shuf_mask = xmm_temp;  // used temporarily to swap key bytes up front
3212     __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr()));
3213     // load up xmm regs xmm2 thru xmm12 with key 0x00 - 0xa0
3214     for (int rnum = XMM_REG_NUM_KEY_FIRST, offset = 0x00; rnum <= XMM_REG_NUM_KEY_FIRST+10; rnum++) {
3215       load_key(as_XMMRegister(rnum), key, offset, xmm_key_shuf_mask);
3216       offset += 0x10;
3217     }
3218     __ movdqu(xmm_result, Address(rvec, 0x00));   // initialize xmm_result with r vec
3219 
3220     // now split to different paths depending on the keylen (len in ints of AESCrypt.KLE array (52=192, or 60=256))
3221     __ movl(rax, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT)));
3222     __ cmpl(rax, 44);
3223     __ jcc(Assembler::notEqual, L_key_192_256);
3224 
3225     // 128 bit code follows here
3226     __ movptr(pos, 0);
3227     __ align(OptoLoopAlignment);
3228 
3229     __ BIND(L_loopTop_128);
3230     __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0));   // get next 16 bytes of input
3231     __ pxor  (xmm_result, xmm_temp);               // xor with the current r vector
3232     __ pxor  (xmm_result, xmm_key0);               // do the aes rounds
3233     for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_FIRST + 9; rnum++) {
3234       __ aesenc(xmm_result, as_XMMRegister(rnum));
3235     }
3236     __ aesenclast(xmm_result, xmm_key10);
3237     __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result);     // store into the next 16 bytes of output
3238     // no need to store r to memory until we exit
3239     __ addptr(pos, AESBlockSize);
3240     __ subptr(len_reg, AESBlockSize);
3241     __ jcc(Assembler::notEqual, L_loopTop_128);
3242 
3243     __ BIND(L_exit);
3244     __ movdqu(Address(rvec, 0), xmm_result);     // final value of r stored in rvec of CipherBlockChaining object
3245 
3246 #ifdef _WIN64
3247     __ movl(rax, len_mem);
3248 #else
3249     __ pop(rax); // return length
3250 #endif
3251     __ leave(); // required for proper stackwalking of RuntimeStub frame
3252     __ ret(0);
3253 
3254     __ BIND(L_key_192_256);
3255     // here rax = len in ints of AESCrypt.KLE array (52=192, or 60=256)
3256     load_key(xmm_key11, key, 0xb0, xmm_key_shuf_mask);
3257     load_key(xmm_key12, key, 0xc0, xmm_key_shuf_mask);
3258     __ cmpl(rax, 52);
3259     __ jcc(Assembler::notEqual, L_key_256);
3260 
3261     // 192-bit code follows here (could be changed to use more xmm registers)
3262     __ movptr(pos, 0);
3263     __ align(OptoLoopAlignment);
3264 
3265     __ BIND(L_loopTop_192);
3266     __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0));   // get next 16 bytes of input
3267     __ pxor  (xmm_result, xmm_temp);               // xor with the current r vector
3268     __ pxor  (xmm_result, xmm_key0);               // do the aes rounds
3269     for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum  <= XMM_REG_NUM_KEY_FIRST + 11; rnum++) {
3270       __ aesenc(xmm_result, as_XMMRegister(rnum));
3271     }
3272     __ aesenclast(xmm_result, xmm_key12);
3273     __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result);     // store into the next 16 bytes of output
3274     // no need to store r to memory until we exit
3275     __ addptr(pos, AESBlockSize);
3276     __ subptr(len_reg, AESBlockSize);
3277     __ jcc(Assembler::notEqual, L_loopTop_192);
3278     __ jmp(L_exit);
3279 
3280     __ BIND(L_key_256);
3281     // 256-bit code follows here (could be changed to use more xmm registers)
3282     load_key(xmm_key13, key, 0xd0, xmm_key_shuf_mask);
3283     __ movptr(pos, 0);
3284     __ align(OptoLoopAlignment);
3285 
3286     __ BIND(L_loopTop_256);
3287     __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0));   // get next 16 bytes of input
3288     __ pxor  (xmm_result, xmm_temp);               // xor with the current r vector
3289     __ pxor  (xmm_result, xmm_key0);               // do the aes rounds
3290     for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum  <= XMM_REG_NUM_KEY_FIRST + 13; rnum++) {
3291       __ aesenc(xmm_result, as_XMMRegister(rnum));
3292     }
3293     load_key(xmm_temp, key, 0xe0);
3294     __ aesenclast(xmm_result, xmm_temp);
3295     __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result);     // store into the next 16 bytes of output
3296     // no need to store r to memory until we exit
3297     __ addptr(pos, AESBlockSize);
3298     __ subptr(len_reg, AESBlockSize);
3299     __ jcc(Assembler::notEqual, L_loopTop_256);
3300     __ jmp(L_exit);
3301 
3302     return start;
3303   }
3304 
3305   // Safefetch stubs.
3306   void generate_safefetch(const char* name, int size, address* entry,
3307                           address* fault_pc, address* continuation_pc) {
3308     // safefetch signatures:
3309     //   int      SafeFetch32(int*      adr, int      errValue);
3310     //   intptr_t SafeFetchN (intptr_t* adr, intptr_t errValue);
3311     //
3312     // arguments:
3313     //   c_rarg0 = adr
3314     //   c_rarg1 = errValue
3315     //
3316     // result:
3317     //   PPC_RET  = *adr or errValue
3318 
3319     StubCodeMark mark(this, "StubRoutines", name);
3320 
3321     // Entry point, pc or function descriptor.
3322     *entry = __ pc();
3323 
3324     // Load *adr into c_rarg1, may fault.
3325     *fault_pc = __ pc();
3326     switch (size) {
3327       case 4:
3328         // int32_t
3329         __ movl(c_rarg1, Address(c_rarg0, 0));
3330         break;
3331       case 8:
3332         // int64_t
3333         __ movq(c_rarg1, Address(c_rarg0, 0));
3334         break;
3335       default:
3336         ShouldNotReachHere();
3337     }
3338 
3339     // return errValue or *adr
3340     *continuation_pc = __ pc();
3341     __ movq(rax, c_rarg1);
3342     __ ret(0);
3343   }
3344 
3345   // This is a version of CBC/AES Decrypt which does 4 blocks in a loop at a time
3346   // to hide instruction latency
3347   //
3348   // Arguments:
3349   //
3350   // Inputs:
3351   //   c_rarg0   - source byte array address
3352   //   c_rarg1   - destination byte array address
3353   //   c_rarg2   - K (key) in little endian int array
3354   //   c_rarg3   - r vector byte array address
3355   //   c_rarg4   - input length
3356   //
3357   // Output:
3358   //   rax       - input length
3359   //
3360   address generate_cipherBlockChaining_decryptAESCrypt_Parallel() {
3361     assert(UseAES, "need AES instructions and misaligned SSE support");
3362     __ align(CodeEntryAlignment);
3363     StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_decryptAESCrypt");
3364     address start = __ pc();
3365 
3366     const Register from        = c_rarg0;  // source array address
3367     const Register to          = c_rarg1;  // destination array address
3368     const Register key         = c_rarg2;  // key array address
3369     const Register rvec        = c_rarg3;  // r byte array initialized from initvector array address
3370                                            // and left with the results of the last encryption block
3371 #ifndef _WIN64
3372     const Register len_reg     = c_rarg4;  // src len (must be multiple of blocksize 16)
3373 #else
3374     const Address  len_mem(rbp, 6 * wordSize);  // length is on stack on Win64
3375     const Register len_reg     = r11;      // pick the volatile windows register
3376 #endif
3377     const Register pos         = rax;
3378 
3379     const int PARALLEL_FACTOR = 4;
3380     const int ROUNDS[3] = { 10, 12, 14 }; // aes rounds for key128, key192, key256
3381 
3382     Label L_exit;
3383     Label L_singleBlock_loopTopHead[3]; // 128, 192, 256
3384     Label L_singleBlock_loopTopHead2[3]; // 128, 192, 256
3385     Label L_singleBlock_loopTop[3]; // 128, 192, 256
3386     Label L_multiBlock_loopTopHead[3]; // 128, 192, 256
3387     Label L_multiBlock_loopTop[3]; // 128, 192, 256
3388 
3389     // keys 0-10 preloaded into xmm5-xmm15
3390     const int XMM_REG_NUM_KEY_FIRST = 5;
3391     const int XMM_REG_NUM_KEY_LAST  = 15;
3392     const XMMRegister xmm_key_first = as_XMMRegister(XMM_REG_NUM_KEY_FIRST);
3393     const XMMRegister xmm_key_last  = as_XMMRegister(XMM_REG_NUM_KEY_LAST);
3394 
3395     __ enter(); // required for proper stackwalking of RuntimeStub frame
3396 
3397 #ifdef _WIN64
3398     // on win64, fill len_reg from stack position
3399     __ movl(len_reg, len_mem);
3400 #else
3401     __ push(len_reg); // Save
3402 #endif
3403     __ push(rbx);
3404     // the java expanded key ordering is rotated one position from what we want
3405     // so we start from 0x10 here and hit 0x00 last
3406     const XMMRegister xmm_key_shuf_mask = xmm1;  // used temporarily to swap key bytes up front
3407     __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr()));
3408     // load up xmm regs 5 thru 15 with key 0x10 - 0xa0 - 0x00
3409     for (int rnum = XMM_REG_NUM_KEY_FIRST, offset = 0x10; rnum < XMM_REG_NUM_KEY_LAST; rnum++) {
3410       load_key(as_XMMRegister(rnum), key, offset, xmm_key_shuf_mask);
3411       offset += 0x10;
3412     }
3413     load_key(xmm_key_last, key, 0x00, xmm_key_shuf_mask);
3414 
3415     const XMMRegister xmm_prev_block_cipher = xmm1;  // holds cipher of previous block
3416 
3417     // registers holding the four results in the parallelized loop
3418     const XMMRegister xmm_result0 = xmm0;
3419     const XMMRegister xmm_result1 = xmm2;
3420     const XMMRegister xmm_result2 = xmm3;
3421     const XMMRegister xmm_result3 = xmm4;
3422 
3423     __ movdqu(xmm_prev_block_cipher, Address(rvec, 0x00));   // initialize with initial rvec
3424 
3425     __ xorptr(pos, pos);
3426 
3427     // now split to different paths depending on the keylen (len in ints of AESCrypt.KLE array (52=192, or 60=256))
3428     __ movl(rbx, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT)));
3429     __ cmpl(rbx, 52);
3430     __ jcc(Assembler::equal, L_multiBlock_loopTopHead[1]);
3431     __ cmpl(rbx, 60);
3432     __ jcc(Assembler::equal, L_multiBlock_loopTopHead[2]);
3433 
3434 #define DoFour(opc, src_reg)           \
3435   __ opc(xmm_result0, src_reg);         \
3436   __ opc(xmm_result1, src_reg);         \
3437   __ opc(xmm_result2, src_reg);         \
3438   __ opc(xmm_result3, src_reg);         \
3439 
3440     for (int k = 0; k < 3; ++k) {
3441       __ BIND(L_multiBlock_loopTopHead[k]);
3442       if (k != 0) {
3443         __ cmpptr(len_reg, PARALLEL_FACTOR * AESBlockSize); // see if at least 4 blocks left
3444         __ jcc(Assembler::less, L_singleBlock_loopTopHead2[k]);
3445       }
3446       if (k == 1) {
3447         __ subptr(rsp, 6 * wordSize);
3448         __ movdqu(Address(rsp, 0), xmm15); //save last_key from xmm15
3449         load_key(xmm15, key, 0xb0); // 0xb0; 192-bit key goes up to 0xc0
3450         __ movdqu(Address(rsp, 2 * wordSize), xmm15);
3451         load_key(xmm1, key, 0xc0);  // 0xc0;
3452         __ movdqu(Address(rsp, 4 * wordSize), xmm1);
3453       } else if (k == 2) {
3454         __ subptr(rsp, 10 * wordSize);
3455         __ movdqu(Address(rsp, 0), xmm15); //save last_key from xmm15
3456         load_key(xmm15, key, 0xd0); // 0xd0; 256-bit key goes upto 0xe0
3457         __ movdqu(Address(rsp, 6 * wordSize), xmm15);
3458         load_key(xmm1, key, 0xe0);  // 0xe0;
3459         __ movdqu(Address(rsp, 8 * wordSize), xmm1);
3460         load_key(xmm15, key, 0xb0); // 0xb0;
3461         __ movdqu(Address(rsp, 2 * wordSize), xmm15);
3462         load_key(xmm1, key, 0xc0);  // 0xc0;
3463         __ movdqu(Address(rsp, 4 * wordSize), xmm1);
3464       }
3465       __ align(OptoLoopAlignment);
3466       __ BIND(L_multiBlock_loopTop[k]);
3467       __ cmpptr(len_reg, PARALLEL_FACTOR * AESBlockSize); // see if at least 4 blocks left
3468       __ jcc(Assembler::less, L_singleBlock_loopTopHead[k]);
3469 
3470       if  (k != 0) {
3471         __ movdqu(xmm15, Address(rsp, 2 * wordSize));
3472         __ movdqu(xmm1, Address(rsp, 4 * wordSize));
3473       }
3474 
3475       __ movdqu(xmm_result0, Address(from, pos, Address::times_1, 0 * AESBlockSize)); // get next 4 blocks into xmmresult registers
3476       __ movdqu(xmm_result1, Address(from, pos, Address::times_1, 1 * AESBlockSize));
3477       __ movdqu(xmm_result2, Address(from, pos, Address::times_1, 2 * AESBlockSize));
3478       __ movdqu(xmm_result3, Address(from, pos, Address::times_1, 3 * AESBlockSize));
3479 
3480       DoFour(pxor, xmm_key_first);
3481       if (k == 0) {
3482         for (int rnum = 1; rnum < ROUNDS[k]; rnum++) {
3483           DoFour(aesdec, as_XMMRegister(rnum + XMM_REG_NUM_KEY_FIRST));
3484         }
3485         DoFour(aesdeclast, xmm_key_last);
3486       } else if (k == 1) {
3487         for (int rnum = 1; rnum <= ROUNDS[k]-2; rnum++) {
3488           DoFour(aesdec, as_XMMRegister(rnum + XMM_REG_NUM_KEY_FIRST));
3489         }
3490         __ movdqu(xmm_key_last, Address(rsp, 0)); // xmm15 needs to be loaded again.
3491         DoFour(aesdec, xmm1);  // key : 0xc0
3492         __ movdqu(xmm_prev_block_cipher, Address(rvec, 0x00));  // xmm1 needs to be loaded again
3493         DoFour(aesdeclast, xmm_key_last);
3494       } else if (k == 2) {
3495         for (int rnum = 1; rnum <= ROUNDS[k] - 4; rnum++) {
3496           DoFour(aesdec, as_XMMRegister(rnum + XMM_REG_NUM_KEY_FIRST));
3497         }
3498         DoFour(aesdec, xmm1);  // key : 0xc0
3499         __ movdqu(xmm15, Address(rsp, 6 * wordSize));
3500         __ movdqu(xmm1, Address(rsp, 8 * wordSize));
3501         DoFour(aesdec, xmm15);  // key : 0xd0
3502         __ movdqu(xmm_key_last, Address(rsp, 0)); // xmm15 needs to be loaded again.
3503         DoFour(aesdec, xmm1);  // key : 0xe0
3504         __ movdqu(xmm_prev_block_cipher, Address(rvec, 0x00));  // xmm1 needs to be loaded again
3505         DoFour(aesdeclast, xmm_key_last);
3506       }
3507 
3508       // for each result, xor with the r vector of previous cipher block
3509       __ pxor(xmm_result0, xmm_prev_block_cipher);
3510       __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 0 * AESBlockSize));
3511       __ pxor(xmm_result1, xmm_prev_block_cipher);
3512       __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 1 * AESBlockSize));
3513       __ pxor(xmm_result2, xmm_prev_block_cipher);
3514       __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 2 * AESBlockSize));
3515       __ pxor(xmm_result3, xmm_prev_block_cipher);
3516       __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 3 * AESBlockSize));   // this will carry over to next set of blocks
3517       if (k != 0) {
3518         __ movdqu(Address(rvec, 0x00), xmm_prev_block_cipher);
3519       }
3520 
3521       __ movdqu(Address(to, pos, Address::times_1, 0 * AESBlockSize), xmm_result0);     // store 4 results into the next 64 bytes of output
3522       __ movdqu(Address(to, pos, Address::times_1, 1 * AESBlockSize), xmm_result1);
3523       __ movdqu(Address(to, pos, Address::times_1, 2 * AESBlockSize), xmm_result2);
3524       __ movdqu(Address(to, pos, Address::times_1, 3 * AESBlockSize), xmm_result3);
3525 
3526       __ addptr(pos, PARALLEL_FACTOR * AESBlockSize);
3527       __ subptr(len_reg, PARALLEL_FACTOR * AESBlockSize);
3528       __ jmp(L_multiBlock_loopTop[k]);
3529 
3530       // registers used in the non-parallelized loops
3531       // xmm register assignments for the loops below
3532       const XMMRegister xmm_result = xmm0;
3533       const XMMRegister xmm_prev_block_cipher_save = xmm2;
3534       const XMMRegister xmm_key11 = xmm3;
3535       const XMMRegister xmm_key12 = xmm4;
3536       const XMMRegister key_tmp = xmm4;
3537 
3538       __ BIND(L_singleBlock_loopTopHead[k]);
3539       if (k == 1) {
3540         __ addptr(rsp, 6 * wordSize);
3541       } else if (k == 2) {
3542         __ addptr(rsp, 10 * wordSize);
3543       }
3544       __ cmpptr(len_reg, 0); // any blocks left??
3545       __ jcc(Assembler::equal, L_exit);
3546       __ BIND(L_singleBlock_loopTopHead2[k]);
3547       if (k == 1) {
3548         load_key(xmm_key11, key, 0xb0); // 0xb0; 192-bit key goes upto 0xc0
3549         load_key(xmm_key12, key, 0xc0); // 0xc0; 192-bit key goes upto 0xc0
3550       }
3551       if (k == 2) {
3552         load_key(xmm_key11, key, 0xb0); // 0xb0; 256-bit key goes upto 0xe0
3553       }
3554       __ align(OptoLoopAlignment);
3555       __ BIND(L_singleBlock_loopTop[k]);
3556       __ movdqu(xmm_result, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of cipher input
3557       __ movdqa(xmm_prev_block_cipher_save, xmm_result); // save for next r vector
3558       __ pxor(xmm_result, xmm_key_first); // do the aes dec rounds
3559       for (int rnum = 1; rnum <= 9 ; rnum++) {
3560           __ aesdec(xmm_result, as_XMMRegister(rnum + XMM_REG_NUM_KEY_FIRST));
3561       }
3562       if (k == 1) {
3563         __ aesdec(xmm_result, xmm_key11);
3564         __ aesdec(xmm_result, xmm_key12);
3565       }
3566       if (k == 2) {
3567         __ aesdec(xmm_result, xmm_key11);
3568         load_key(key_tmp, key, 0xc0);
3569         __ aesdec(xmm_result, key_tmp);
3570         load_key(key_tmp, key, 0xd0);
3571         __ aesdec(xmm_result, key_tmp);
3572         load_key(key_tmp, key, 0xe0);
3573         __ aesdec(xmm_result, key_tmp);
3574       }
3575 
3576       __ aesdeclast(xmm_result, xmm_key_last); // xmm15 always came from key+0
3577       __ pxor(xmm_result, xmm_prev_block_cipher); // xor with the current r vector
3578       __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output
3579       // no need to store r to memory until we exit
3580       __ movdqa(xmm_prev_block_cipher, xmm_prev_block_cipher_save); // set up next r vector with cipher input from this block
3581       __ addptr(pos, AESBlockSize);
3582       __ subptr(len_reg, AESBlockSize);
3583       __ jcc(Assembler::notEqual, L_singleBlock_loopTop[k]);
3584       if (k != 2) {
3585         __ jmp(L_exit);
3586       }
3587     } //for 128/192/256
3588 
3589     __ BIND(L_exit);
3590     __ movdqu(Address(rvec, 0), xmm_prev_block_cipher);     // final value of r stored in rvec of CipherBlockChaining object
3591     __ pop(rbx);
3592 #ifdef _WIN64
3593     __ movl(rax, len_mem);
3594 #else
3595     __ pop(rax); // return length
3596 #endif
3597     __ leave(); // required for proper stackwalking of RuntimeStub frame
3598     __ ret(0);
3599     return start;
3600 }
3601 
3602   address generate_upper_word_mask() {
3603     __ align(64);
3604     StubCodeMark mark(this, "StubRoutines", "upper_word_mask");
3605     address start = __ pc();
3606     __ emit_data64(0x0000000000000000, relocInfo::none);
3607     __ emit_data64(0xFFFFFFFF00000000, relocInfo::none);
3608     return start;
3609   }
3610 
3611   address generate_shuffle_byte_flip_mask() {
3612     __ align(64);
3613     StubCodeMark mark(this, "StubRoutines", "shuffle_byte_flip_mask");
3614     address start = __ pc();
3615     __ emit_data64(0x08090a0b0c0d0e0f, relocInfo::none);
3616     __ emit_data64(0x0001020304050607, relocInfo::none);
3617     return start;
3618   }
3619 
3620   // ofs and limit are use for multi-block byte array.
3621   // int com.sun.security.provider.DigestBase.implCompressMultiBlock(byte[] b, int ofs, int limit)
3622   address generate_sha1_implCompress(bool multi_block, const char *name) {
3623     __ align(CodeEntryAlignment);
3624     StubCodeMark mark(this, "StubRoutines", name);
3625     address start = __ pc();
3626 
3627     Register buf = c_rarg0;
3628     Register state = c_rarg1;
3629     Register ofs = c_rarg2;
3630     Register limit = c_rarg3;
3631 
3632     const XMMRegister abcd = xmm0;
3633     const XMMRegister e0 = xmm1;
3634     const XMMRegister e1 = xmm2;
3635     const XMMRegister msg0 = xmm3;
3636 
3637     const XMMRegister msg1 = xmm4;
3638     const XMMRegister msg2 = xmm5;
3639     const XMMRegister msg3 = xmm6;
3640     const XMMRegister shuf_mask = xmm7;
3641 
3642     __ enter();
3643 
3644     __ subptr(rsp, 4 * wordSize);
3645 
3646     __ fast_sha1(abcd, e0, e1, msg0, msg1, msg2, msg3, shuf_mask,
3647       buf, state, ofs, limit, rsp, multi_block);
3648 
3649     __ addptr(rsp, 4 * wordSize);
3650 
3651     __ leave();
3652     __ ret(0);
3653     return start;
3654   }
3655 
3656   address generate_pshuffle_byte_flip_mask() {
3657     __ align(64);
3658     StubCodeMark mark(this, "StubRoutines", "pshuffle_byte_flip_mask");
3659     address start = __ pc();
3660     __ emit_data64(0x0405060700010203, relocInfo::none);
3661     __ emit_data64(0x0c0d0e0f08090a0b, relocInfo::none);
3662 
3663     if (VM_Version::supports_avx2()) {
3664       __ emit_data64(0x0405060700010203, relocInfo::none); // second copy
3665       __ emit_data64(0x0c0d0e0f08090a0b, relocInfo::none);
3666       // _SHUF_00BA
3667       __ emit_data64(0x0b0a090803020100, relocInfo::none);
3668       __ emit_data64(0xFFFFFFFFFFFFFFFF, relocInfo::none);
3669       __ emit_data64(0x0b0a090803020100, relocInfo::none);
3670       __ emit_data64(0xFFFFFFFFFFFFFFFF, relocInfo::none);
3671       // _SHUF_DC00
3672       __ emit_data64(0xFFFFFFFFFFFFFFFF, relocInfo::none);
3673       __ emit_data64(0x0b0a090803020100, relocInfo::none);
3674       __ emit_data64(0xFFFFFFFFFFFFFFFF, relocInfo::none);
3675       __ emit_data64(0x0b0a090803020100, relocInfo::none);
3676     }
3677 
3678     return start;
3679   }
3680 
3681   //Mask for byte-swapping a couple of qwords in an XMM register using (v)pshufb.
3682   address generate_pshuffle_byte_flip_mask_sha512() {
3683     __ align(32);
3684     StubCodeMark mark(this, "StubRoutines", "pshuffle_byte_flip_mask_sha512");
3685     address start = __ pc();
3686     if (VM_Version::supports_avx2()) {
3687       __ emit_data64(0x0001020304050607, relocInfo::none); // PSHUFFLE_BYTE_FLIP_MASK
3688       __ emit_data64(0x08090a0b0c0d0e0f, relocInfo::none);
3689       __ emit_data64(0x1011121314151617, relocInfo::none);
3690       __ emit_data64(0x18191a1b1c1d1e1f, relocInfo::none);
3691       __ emit_data64(0x0000000000000000, relocInfo::none); //MASK_YMM_LO
3692       __ emit_data64(0x0000000000000000, relocInfo::none);
3693       __ emit_data64(0xFFFFFFFFFFFFFFFF, relocInfo::none);
3694       __ emit_data64(0xFFFFFFFFFFFFFFFF, relocInfo::none);
3695     }
3696 
3697     return start;
3698   }
3699 
3700 // ofs and limit are use for multi-block byte array.
3701 // int com.sun.security.provider.DigestBase.implCompressMultiBlock(byte[] b, int ofs, int limit)
3702   address generate_sha256_implCompress(bool multi_block, const char *name) {
3703     assert(VM_Version::supports_sha() || VM_Version::supports_avx2(), "");
3704     __ align(CodeEntryAlignment);
3705     StubCodeMark mark(this, "StubRoutines", name);
3706     address start = __ pc();
3707 
3708     Register buf = c_rarg0;
3709     Register state = c_rarg1;
3710     Register ofs = c_rarg2;
3711     Register limit = c_rarg3;
3712 
3713     const XMMRegister msg = xmm0;
3714     const XMMRegister state0 = xmm1;
3715     const XMMRegister state1 = xmm2;
3716     const XMMRegister msgtmp0 = xmm3;
3717 
3718     const XMMRegister msgtmp1 = xmm4;
3719     const XMMRegister msgtmp2 = xmm5;
3720     const XMMRegister msgtmp3 = xmm6;
3721     const XMMRegister msgtmp4 = xmm7;
3722 
3723     const XMMRegister shuf_mask = xmm8;
3724 
3725     __ enter();
3726 
3727     __ subptr(rsp, 4 * wordSize);
3728 
3729     if (VM_Version::supports_sha()) {
3730       __ fast_sha256(msg, state0, state1, msgtmp0, msgtmp1, msgtmp2, msgtmp3, msgtmp4,
3731         buf, state, ofs, limit, rsp, multi_block, shuf_mask);
3732     } else if (VM_Version::supports_avx2()) {
3733       __ sha256_AVX2(msg, state0, state1, msgtmp0, msgtmp1, msgtmp2, msgtmp3, msgtmp4,
3734         buf, state, ofs, limit, rsp, multi_block, shuf_mask);
3735     }
3736     __ addptr(rsp, 4 * wordSize);
3737     __ vzeroupper();
3738     __ leave();
3739     __ ret(0);
3740     return start;
3741   }
3742 
3743   address generate_sha512_implCompress(bool multi_block, const char *name) {
3744     assert(VM_Version::supports_avx2(), "");
3745     assert(VM_Version::supports_bmi2(), "");
3746     __ align(CodeEntryAlignment);
3747     StubCodeMark mark(this, "StubRoutines", name);
3748     address start = __ pc();
3749 
3750     Register buf = c_rarg0;
3751     Register state = c_rarg1;
3752     Register ofs = c_rarg2;
3753     Register limit = c_rarg3;
3754 
3755     const XMMRegister msg = xmm0;
3756     const XMMRegister state0 = xmm1;
3757     const XMMRegister state1 = xmm2;
3758     const XMMRegister msgtmp0 = xmm3;
3759     const XMMRegister msgtmp1 = xmm4;
3760     const XMMRegister msgtmp2 = xmm5;
3761     const XMMRegister msgtmp3 = xmm6;
3762     const XMMRegister msgtmp4 = xmm7;
3763 
3764     const XMMRegister shuf_mask = xmm8;
3765 
3766     __ enter();
3767 
3768     __ sha512_AVX2(msg, state0, state1, msgtmp0, msgtmp1, msgtmp2, msgtmp3, msgtmp4,
3769     buf, state, ofs, limit, rsp, multi_block, shuf_mask);
3770 
3771     __ vzeroupper();
3772     __ leave();
3773     __ ret(0);
3774     return start;
3775   }
3776 
3777   // This is a version of CTR/AES crypt which does 6 blocks in a loop at a time
3778   // to hide instruction latency
3779   //
3780   // Arguments:
3781   //
3782   // Inputs:
3783   //   c_rarg0   - source byte array address
3784   //   c_rarg1   - destination byte array address
3785   //   c_rarg2   - K (key) in little endian int array
3786   //   c_rarg3   - counter vector byte array address
3787   //   Linux
3788   //     c_rarg4   -          input length
3789   //     c_rarg5   -          saved encryptedCounter start
3790   //     rbp + 6 * wordSize - saved used length
3791   //   Windows
3792   //     rbp + 6 * wordSize - input length
3793   //     rbp + 7 * wordSize - saved encryptedCounter start
3794   //     rbp + 8 * wordSize - saved used length
3795   //
3796   // Output:
3797   //   rax       - input length
3798   //
3799   address generate_counterMode_AESCrypt_Parallel() {
3800     assert(UseAES, "need AES instructions and misaligned SSE support");
3801     __ align(CodeEntryAlignment);
3802     StubCodeMark mark(this, "StubRoutines", "counterMode_AESCrypt");
3803     address start = __ pc();
3804     const Register from = c_rarg0; // source array address
3805     const Register to = c_rarg1; // destination array address
3806     const Register key = c_rarg2; // key array address
3807     const Register counter = c_rarg3; // counter byte array initialized from counter array address
3808                                       // and updated with the incremented counter in the end
3809 #ifndef _WIN64
3810     const Register len_reg = c_rarg4;
3811     const Register saved_encCounter_start = c_rarg5;
3812     const Register used_addr = r10;
3813     const Address  used_mem(rbp, 2 * wordSize);
3814     const Register used = r11;
3815 #else
3816     const Address len_mem(rbp, 6 * wordSize); // length is on stack on Win64
3817     const Address saved_encCounter_mem(rbp, 7 * wordSize); // length is on stack on Win64
3818     const Address used_mem(rbp, 8 * wordSize); // length is on stack on Win64
3819     const Register len_reg = r10; // pick the first volatile windows register
3820     const Register saved_encCounter_start = r11;
3821     const Register used_addr = r13;
3822     const Register used = r14;
3823 #endif
3824     const Register pos = rax;
3825 
3826     const int PARALLEL_FACTOR = 6;
3827     const XMMRegister xmm_counter_shuf_mask = xmm0;
3828     const XMMRegister xmm_key_shuf_mask = xmm1; // used temporarily to swap key bytes up front
3829     const XMMRegister xmm_curr_counter = xmm2;
3830 
3831     const XMMRegister xmm_key_tmp0 = xmm3;
3832     const XMMRegister xmm_key_tmp1 = xmm4;
3833 
3834     // registers holding the four results in the parallelized loop
3835     const XMMRegister xmm_result0 = xmm5;
3836     const XMMRegister xmm_result1 = xmm6;
3837     const XMMRegister xmm_result2 = xmm7;
3838     const XMMRegister xmm_result3 = xmm8;
3839     const XMMRegister xmm_result4 = xmm9;
3840     const XMMRegister xmm_result5 = xmm10;
3841 
3842     const XMMRegister xmm_from0 = xmm11;
3843     const XMMRegister xmm_from1 = xmm12;
3844     const XMMRegister xmm_from2 = xmm13;
3845     const XMMRegister xmm_from3 = xmm14; //the last one is xmm14. we have to preserve it on WIN64.
3846     const XMMRegister xmm_from4 = xmm3; //reuse xmm3~4. Because xmm_key_tmp0~1 are useless when loading input text
3847     const XMMRegister xmm_from5 = xmm4;
3848 
3849     //for key_128, key_192, key_256
3850     const int rounds[3] = {10, 12, 14};
3851     Label L_exit_preLoop, L_preLoop_start;
3852     Label L_multiBlock_loopTop[3];
3853     Label L_singleBlockLoopTop[3];
3854     Label L__incCounter[3][6]; //for 6 blocks
3855     Label L__incCounter_single[3]; //for single block, key128, key192, key256
3856     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];
3857     Label L_processTail_4_extr[3], L_processTail_2_extr[3], L_processTail_1_extr[3], L_processTail_exit_extr[3];
3858 
3859     Label L_exit;
3860 
3861     __ enter(); // required for proper stackwalking of RuntimeStub frame
3862 
3863 #ifdef _WIN64
3864     // allocate spill slots for r13, r14
3865     enum {
3866         saved_r13_offset,
3867         saved_r14_offset
3868     };
3869     __ subptr(rsp, 2 * wordSize);
3870     __ movptr(Address(rsp, saved_r13_offset * wordSize), r13);
3871     __ movptr(Address(rsp, saved_r14_offset * wordSize), r14);
3872 
3873     // on win64, fill len_reg from stack position
3874     __ movl(len_reg, len_mem);
3875     __ movptr(saved_encCounter_start, saved_encCounter_mem);
3876     __ movptr(used_addr, used_mem);
3877     __ movl(used, Address(used_addr, 0));
3878 #else
3879     __ push(len_reg); // Save
3880     __ movptr(used_addr, used_mem);
3881     __ movl(used, Address(used_addr, 0));
3882 #endif
3883 
3884     __ push(rbx); // Save RBX
3885     __ movdqu(xmm_curr_counter, Address(counter, 0x00)); // initialize counter with initial counter
3886     __ movdqu(xmm_counter_shuf_mask, ExternalAddress(StubRoutines::x86::counter_shuffle_mask_addr()), pos); // pos as scratch
3887     __ pshufb(xmm_curr_counter, xmm_counter_shuf_mask); //counter is shuffled
3888     __ movptr(pos, 0);
3889 
3890     // Use the partially used encrpyted counter from last invocation
3891     __ BIND(L_preLoop_start);
3892     __ cmpptr(used, 16);
3893     __ jcc(Assembler::aboveEqual, L_exit_preLoop);
3894       __ cmpptr(len_reg, 0);
3895       __ jcc(Assembler::lessEqual, L_exit_preLoop);
3896       __ movb(rbx, Address(saved_encCounter_start, used));
3897       __ xorb(rbx, Address(from, pos));
3898       __ movb(Address(to, pos), rbx);
3899       __ addptr(pos, 1);
3900       __ addptr(used, 1);
3901       __ subptr(len_reg, 1);
3902 
3903     __ jmp(L_preLoop_start);
3904 
3905     __ BIND(L_exit_preLoop);
3906     __ movl(Address(used_addr, 0), used);
3907 
3908     // key length could be only {11, 13, 15} * 4 = {44, 52, 60}
3909     __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr()), rbx); // rbx as scratch
3910     __ movl(rbx, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT)));
3911     __ cmpl(rbx, 52);
3912     __ jcc(Assembler::equal, L_multiBlock_loopTop[1]);
3913     __ cmpl(rbx, 60);
3914     __ jcc(Assembler::equal, L_multiBlock_loopTop[2]);
3915 
3916 #define CTR_DoSix(opc, src_reg)                \
3917     __ opc(xmm_result0, src_reg);              \
3918     __ opc(xmm_result1, src_reg);              \
3919     __ opc(xmm_result2, src_reg);              \
3920     __ opc(xmm_result3, src_reg);              \
3921     __ opc(xmm_result4, src_reg);              \
3922     __ opc(xmm_result5, src_reg);
3923 
3924     // k == 0 :  generate code for key_128
3925     // k == 1 :  generate code for key_192
3926     // k == 2 :  generate code for key_256
3927     for (int k = 0; k < 3; ++k) {
3928       //multi blocks starts here
3929       __ align(OptoLoopAlignment);
3930       __ BIND(L_multiBlock_loopTop[k]);
3931       __ cmpptr(len_reg, PARALLEL_FACTOR * AESBlockSize); // see if at least PARALLEL_FACTOR blocks left
3932       __ jcc(Assembler::less, L_singleBlockLoopTop[k]);
3933       load_key(xmm_key_tmp0, key, 0x00, xmm_key_shuf_mask);
3934 
3935       //load, then increase counters
3936       CTR_DoSix(movdqa, xmm_curr_counter);
3937       inc_counter(rbx, xmm_result1, 0x01, L__incCounter[k][0]);
3938       inc_counter(rbx, xmm_result2, 0x02, L__incCounter[k][1]);
3939       inc_counter(rbx, xmm_result3, 0x03, L__incCounter[k][2]);
3940       inc_counter(rbx, xmm_result4, 0x04, L__incCounter[k][3]);
3941       inc_counter(rbx, xmm_result5,  0x05, L__incCounter[k][4]);
3942       inc_counter(rbx, xmm_curr_counter, 0x06, L__incCounter[k][5]);
3943       CTR_DoSix(pshufb, xmm_counter_shuf_mask); // after increased, shuffled counters back for PXOR
3944       CTR_DoSix(pxor, xmm_key_tmp0);   //PXOR with Round 0 key
3945 
3946       //load two ROUND_KEYs at a time
3947       for (int i = 1; i < rounds[k]; ) {
3948         load_key(xmm_key_tmp1, key, (0x10 * i), xmm_key_shuf_mask);
3949         load_key(xmm_key_tmp0, key, (0x10 * (i+1)), xmm_key_shuf_mask);
3950         CTR_DoSix(aesenc, xmm_key_tmp1);
3951         i++;
3952         if (i != rounds[k]) {
3953           CTR_DoSix(aesenc, xmm_key_tmp0);
3954         } else {
3955           CTR_DoSix(aesenclast, xmm_key_tmp0);
3956         }
3957         i++;
3958       }
3959 
3960       // get next PARALLEL_FACTOR blocks into xmm_result registers
3961       __ movdqu(xmm_from0, Address(from, pos, Address::times_1, 0 * AESBlockSize));
3962       __ movdqu(xmm_from1, Address(from, pos, Address::times_1, 1 * AESBlockSize));
3963       __ movdqu(xmm_from2, Address(from, pos, Address::times_1, 2 * AESBlockSize));
3964       __ movdqu(xmm_from3, Address(from, pos, Address::times_1, 3 * AESBlockSize));
3965       __ movdqu(xmm_from4, Address(from, pos, Address::times_1, 4 * AESBlockSize));
3966       __ movdqu(xmm_from5, Address(from, pos, Address::times_1, 5 * AESBlockSize));
3967 
3968       __ pxor(xmm_result0, xmm_from0);
3969       __ pxor(xmm_result1, xmm_from1);
3970       __ pxor(xmm_result2, xmm_from2);
3971       __ pxor(xmm_result3, xmm_from3);
3972       __ pxor(xmm_result4, xmm_from4);
3973       __ pxor(xmm_result5, xmm_from5);
3974 
3975       // store 6 results into the next 64 bytes of output
3976       __ movdqu(Address(to, pos, Address::times_1, 0 * AESBlockSize), xmm_result0);
3977       __ movdqu(Address(to, pos, Address::times_1, 1 * AESBlockSize), xmm_result1);
3978       __ movdqu(Address(to, pos, Address::times_1, 2 * AESBlockSize), xmm_result2);
3979       __ movdqu(Address(to, pos, Address::times_1, 3 * AESBlockSize), xmm_result3);
3980       __ movdqu(Address(to, pos, Address::times_1, 4 * AESBlockSize), xmm_result4);
3981       __ movdqu(Address(to, pos, Address::times_1, 5 * AESBlockSize), xmm_result5);
3982 
3983       __ addptr(pos, PARALLEL_FACTOR * AESBlockSize); // increase the length of crypt text
3984       __ subptr(len_reg, PARALLEL_FACTOR * AESBlockSize); // decrease the remaining length
3985       __ jmp(L_multiBlock_loopTop[k]);
3986 
3987       // singleBlock starts here
3988       __ align(OptoLoopAlignment);
3989       __ BIND(L_singleBlockLoopTop[k]);
3990       __ cmpptr(len_reg, 0);
3991       __ jcc(Assembler::lessEqual, L_exit);
3992       load_key(xmm_key_tmp0, key, 0x00, xmm_key_shuf_mask);
3993       __ movdqa(xmm_result0, xmm_curr_counter);
3994       inc_counter(rbx, xmm_curr_counter, 0x01, L__incCounter_single[k]);
3995       __ pshufb(xmm_result0, xmm_counter_shuf_mask);
3996       __ pxor(xmm_result0, xmm_key_tmp0);
3997       for (int i = 1; i < rounds[k]; i++) {
3998         load_key(xmm_key_tmp0, key, (0x10 * i), xmm_key_shuf_mask);
3999         __ aesenc(xmm_result0, xmm_key_tmp0);
4000       }
4001       load_key(xmm_key_tmp0, key, (rounds[k] * 0x10), xmm_key_shuf_mask);
4002       __ aesenclast(xmm_result0, xmm_key_tmp0);
4003       __ cmpptr(len_reg, AESBlockSize);
4004       __ jcc(Assembler::less, L_processTail_insr[k]);
4005         __ movdqu(xmm_from0, Address(from, pos, Address::times_1, 0 * AESBlockSize));
4006         __ pxor(xmm_result0, xmm_from0);
4007         __ movdqu(Address(to, pos, Address::times_1, 0 * AESBlockSize), xmm_result0);
4008         __ addptr(pos, AESBlockSize);
4009         __ subptr(len_reg, AESBlockSize);
4010         __ jmp(L_singleBlockLoopTop[k]);
4011       __ BIND(L_processTail_insr[k]);                               // Process the tail part of the input array
4012         __ addptr(pos, len_reg);                                    // 1. Insert bytes from src array into xmm_from0 register
4013         __ testptr(len_reg, 8);
4014         __ jcc(Assembler::zero, L_processTail_4_insr[k]);
4015           __ subptr(pos,8);
4016           __ pinsrq(xmm_from0, Address(from, pos), 0);
4017         __ BIND(L_processTail_4_insr[k]);
4018         __ testptr(len_reg, 4);
4019         __ jcc(Assembler::zero, L_processTail_2_insr[k]);
4020           __ subptr(pos,4);
4021           __ pslldq(xmm_from0, 4);
4022           __ pinsrd(xmm_from0, Address(from, pos), 0);
4023         __ BIND(L_processTail_2_insr[k]);
4024         __ testptr(len_reg, 2);
4025         __ jcc(Assembler::zero, L_processTail_1_insr[k]);
4026           __ subptr(pos, 2);
4027           __ pslldq(xmm_from0, 2);
4028           __ pinsrw(xmm_from0, Address(from, pos), 0);
4029         __ BIND(L_processTail_1_insr[k]);
4030         __ testptr(len_reg, 1);
4031         __ jcc(Assembler::zero, L_processTail_exit_insr[k]);
4032           __ subptr(pos, 1);
4033           __ pslldq(xmm_from0, 1);
4034           __ pinsrb(xmm_from0, Address(from, pos), 0);
4035         __ BIND(L_processTail_exit_insr[k]);
4036 
4037         __ movdqu(Address(saved_encCounter_start, 0), xmm_result0);  // 2. Perform pxor of the encrypted counter and plaintext Bytes.
4038         __ pxor(xmm_result0, xmm_from0);                             //    Also the encrypted counter is saved for next invocation.
4039 
4040         __ testptr(len_reg, 8);
4041         __ jcc(Assembler::zero, L_processTail_4_extr[k]);            // 3. Extract bytes from xmm_result0 into the dest. array
4042           __ pextrq(Address(to, pos), xmm_result0, 0);
4043           __ psrldq(xmm_result0, 8);
4044           __ addptr(pos, 8);
4045         __ BIND(L_processTail_4_extr[k]);
4046         __ testptr(len_reg, 4);
4047         __ jcc(Assembler::zero, L_processTail_2_extr[k]);
4048           __ pextrd(Address(to, pos), xmm_result0, 0);
4049           __ psrldq(xmm_result0, 4);
4050           __ addptr(pos, 4);
4051         __ BIND(L_processTail_2_extr[k]);
4052         __ testptr(len_reg, 2);
4053         __ jcc(Assembler::zero, L_processTail_1_extr[k]);
4054           __ pextrw(Address(to, pos), xmm_result0, 0);
4055           __ psrldq(xmm_result0, 2);
4056           __ addptr(pos, 2);
4057         __ BIND(L_processTail_1_extr[k]);
4058         __ testptr(len_reg, 1);
4059         __ jcc(Assembler::zero, L_processTail_exit_extr[k]);
4060           __ pextrb(Address(to, pos), xmm_result0, 0);
4061 
4062         __ BIND(L_processTail_exit_extr[k]);
4063         __ movl(Address(used_addr, 0), len_reg);
4064         __ jmp(L_exit);
4065 
4066     }
4067 
4068     __ BIND(L_exit);
4069     __ pshufb(xmm_curr_counter, xmm_counter_shuf_mask); //counter is shuffled back.
4070     __ movdqu(Address(counter, 0), xmm_curr_counter); //save counter back
4071     __ pop(rbx); // pop the saved RBX.
4072 #ifdef _WIN64
4073     __ movl(rax, len_mem);
4074     __ movptr(r13, Address(rsp, saved_r13_offset * wordSize));
4075     __ movptr(r14, Address(rsp, saved_r14_offset * wordSize));
4076     __ addptr(rsp, 2 * wordSize);
4077 #else
4078     __ pop(rax); // return 'len'
4079 #endif
4080     __ leave(); // required for proper stackwalking of RuntimeStub frame
4081     __ ret(0);
4082     return start;
4083   }
4084 
4085 void roundDec(XMMRegister xmm_reg) {
4086   __ vaesdec(xmm1, xmm1, xmm_reg, Assembler::AVX_512bit);
4087   __ vaesdec(xmm2, xmm2, xmm_reg, Assembler::AVX_512bit);
4088   __ vaesdec(xmm3, xmm3, xmm_reg, Assembler::AVX_512bit);
4089   __ vaesdec(xmm4, xmm4, xmm_reg, Assembler::AVX_512bit);
4090   __ vaesdec(xmm5, xmm5, xmm_reg, Assembler::AVX_512bit);
4091   __ vaesdec(xmm6, xmm6, xmm_reg, Assembler::AVX_512bit);
4092   __ vaesdec(xmm7, xmm7, xmm_reg, Assembler::AVX_512bit);
4093   __ vaesdec(xmm8, xmm8, xmm_reg, Assembler::AVX_512bit);
4094 }
4095 
4096 void roundDeclast(XMMRegister xmm_reg) {
4097   __ vaesdeclast(xmm1, xmm1, xmm_reg, Assembler::AVX_512bit);
4098   __ vaesdeclast(xmm2, xmm2, xmm_reg, Assembler::AVX_512bit);
4099   __ vaesdeclast(xmm3, xmm3, xmm_reg, Assembler::AVX_512bit);
4100   __ vaesdeclast(xmm4, xmm4, xmm_reg, Assembler::AVX_512bit);
4101   __ vaesdeclast(xmm5, xmm5, xmm_reg, Assembler::AVX_512bit);
4102   __ vaesdeclast(xmm6, xmm6, xmm_reg, Assembler::AVX_512bit);
4103   __ vaesdeclast(xmm7, xmm7, xmm_reg, Assembler::AVX_512bit);
4104   __ vaesdeclast(xmm8, xmm8, xmm_reg, Assembler::AVX_512bit);
4105 }
4106 
4107   void ev_load_key(XMMRegister xmmdst, Register key, int offset, XMMRegister xmm_shuf_mask = NULL) {
4108     __ movdqu(xmmdst, Address(key, offset));
4109     if (xmm_shuf_mask != NULL) {
4110       __ pshufb(xmmdst, xmm_shuf_mask);
4111     } else {
4112       __ pshufb(xmmdst, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr()));
4113     }
4114     __ evshufi64x2(xmmdst, xmmdst, xmmdst, 0x0, Assembler::AVX_512bit);
4115 
4116   }
4117 
4118 address generate_cipherBlockChaining_decryptVectorAESCrypt() {
4119     assert(VM_Version::supports_vaes(), "need AES instructions and misaligned SSE support");
4120     __ align(CodeEntryAlignment);
4121     StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_decryptAESCrypt");
4122     address start = __ pc();
4123 
4124     const Register from = c_rarg0;  // source array address
4125     const Register to = c_rarg1;  // destination array address
4126     const Register key = c_rarg2;  // key array address
4127     const Register rvec = c_rarg3;  // r byte array initialized from initvector array address
4128     // and left with the results of the last encryption block
4129 #ifndef _WIN64
4130     const Register len_reg = c_rarg4;  // src len (must be multiple of blocksize 16)
4131 #else
4132     const Address  len_mem(rbp, 6 * wordSize);  // length is on stack on Win64
4133     const Register len_reg = r11;      // pick the volatile windows register
4134 #endif
4135 
4136     Label Loop, Loop1, L_128, L_256, L_192, KEY_192, KEY_256, Loop2, Lcbc_dec_rem_loop,
4137           Lcbc_dec_rem_last, Lcbc_dec_ret, Lcbc_dec_rem, Lcbc_exit;
4138 
4139     __ enter();
4140 
4141 #ifdef _WIN64
4142   // on win64, fill len_reg from stack position
4143     __ movl(len_reg, len_mem);
4144 #else
4145     __ push(len_reg); // Save
4146 #endif
4147     __ push(rbx);
4148     __ vzeroupper();
4149 
4150     // Temporary variable declaration for swapping key bytes
4151     const XMMRegister xmm_key_shuf_mask = xmm1;
4152     __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr()));
4153 
4154     // Calculate number of rounds from key size: 44 for 10-rounds, 52 for 12-rounds, 60 for 14-rounds
4155     const Register rounds = rbx;
4156     __ movl(rounds, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT)));
4157 
4158     const XMMRegister IV = xmm0;
4159     // Load IV and broadcast value to 512-bits
4160     __ evbroadcasti64x2(IV, Address(rvec, 0), Assembler::AVX_512bit);
4161 
4162     // Temporary variables for storing round keys
4163     const XMMRegister RK0 = xmm30;
4164     const XMMRegister RK1 = xmm9;
4165     const XMMRegister RK2 = xmm18;
4166     const XMMRegister RK3 = xmm19;
4167     const XMMRegister RK4 = xmm20;
4168     const XMMRegister RK5 = xmm21;
4169     const XMMRegister RK6 = xmm22;
4170     const XMMRegister RK7 = xmm23;
4171     const XMMRegister RK8 = xmm24;
4172     const XMMRegister RK9 = xmm25;
4173     const XMMRegister RK10 = xmm26;
4174 
4175      // Load and shuffle key
4176     // the java expanded key ordering is rotated one position from what we want
4177     // so we start from 1*16 here and hit 0*16 last
4178     ev_load_key(RK1, key, 1 * 16, xmm_key_shuf_mask);
4179     ev_load_key(RK2, key, 2 * 16, xmm_key_shuf_mask);
4180     ev_load_key(RK3, key, 3 * 16, xmm_key_shuf_mask);
4181     ev_load_key(RK4, key, 4 * 16, xmm_key_shuf_mask);
4182     ev_load_key(RK5, key, 5 * 16, xmm_key_shuf_mask);
4183     ev_load_key(RK6, key, 6 * 16, xmm_key_shuf_mask);
4184     ev_load_key(RK7, key, 7 * 16, xmm_key_shuf_mask);
4185     ev_load_key(RK8, key, 8 * 16, xmm_key_shuf_mask);
4186     ev_load_key(RK9, key, 9 * 16, xmm_key_shuf_mask);
4187     ev_load_key(RK10, key, 10 * 16, xmm_key_shuf_mask);
4188     ev_load_key(RK0, key, 0*16, xmm_key_shuf_mask);
4189 
4190     // Variables for storing source cipher text
4191     const XMMRegister S0 = xmm10;
4192     const XMMRegister S1 = xmm11;
4193     const XMMRegister S2 = xmm12;
4194     const XMMRegister S3 = xmm13;
4195     const XMMRegister S4 = xmm14;
4196     const XMMRegister S5 = xmm15;
4197     const XMMRegister S6 = xmm16;
4198     const XMMRegister S7 = xmm17;
4199 
4200     // Variables for storing decrypted text
4201     const XMMRegister B0 = xmm1;
4202     const XMMRegister B1 = xmm2;
4203     const XMMRegister B2 = xmm3;
4204     const XMMRegister B3 = xmm4;
4205     const XMMRegister B4 = xmm5;
4206     const XMMRegister B5 = xmm6;
4207     const XMMRegister B6 = xmm7;
4208     const XMMRegister B7 = xmm8;
4209 
4210     __ cmpl(rounds, 44);
4211     __ jcc(Assembler::greater, KEY_192);
4212     __ jmp(Loop);
4213 
4214     __ BIND(KEY_192);
4215     const XMMRegister RK11 = xmm27;
4216     const XMMRegister RK12 = xmm28;
4217     ev_load_key(RK11, key, 11*16, xmm_key_shuf_mask);
4218     ev_load_key(RK12, key, 12*16, xmm_key_shuf_mask);
4219 
4220     __ cmpl(rounds, 52);
4221     __ jcc(Assembler::greater, KEY_256);
4222     __ jmp(Loop);
4223 
4224     __ BIND(KEY_256);
4225     const XMMRegister RK13 = xmm29;
4226     const XMMRegister RK14 = xmm31;
4227     ev_load_key(RK13, key, 13*16, xmm_key_shuf_mask);
4228     ev_load_key(RK14, key, 14*16, xmm_key_shuf_mask);
4229 
4230     __ BIND(Loop);
4231     __ cmpl(len_reg, 512);
4232     __ jcc(Assembler::below, Lcbc_dec_rem);
4233     __ BIND(Loop1);
4234     __ subl(len_reg, 512);
4235     __ evmovdquq(S0, Address(from, 0 * 64), Assembler::AVX_512bit);
4236     __ evmovdquq(S1, Address(from, 1 * 64), Assembler::AVX_512bit);
4237     __ evmovdquq(S2, Address(from, 2 * 64), Assembler::AVX_512bit);
4238     __ evmovdquq(S3, Address(from, 3 * 64), Assembler::AVX_512bit);
4239     __ evmovdquq(S4, Address(from, 4 * 64), Assembler::AVX_512bit);
4240     __ evmovdquq(S5, Address(from, 5 * 64), Assembler::AVX_512bit);
4241     __ evmovdquq(S6, Address(from, 6 * 64), Assembler::AVX_512bit);
4242     __ evmovdquq(S7, Address(from, 7 * 64), Assembler::AVX_512bit);
4243     __ leaq(from, Address(from, 8 * 64));
4244 
4245     __ evpxorq(B0, S0, RK1, Assembler::AVX_512bit);
4246     __ evpxorq(B1, S1, RK1, Assembler::AVX_512bit);
4247     __ evpxorq(B2, S2, RK1, Assembler::AVX_512bit);
4248     __ evpxorq(B3, S3, RK1, Assembler::AVX_512bit);
4249     __ evpxorq(B4, S4, RK1, Assembler::AVX_512bit);
4250     __ evpxorq(B5, S5, RK1, Assembler::AVX_512bit);
4251     __ evpxorq(B6, S6, RK1, Assembler::AVX_512bit);
4252     __ evpxorq(B7, S7, RK1, Assembler::AVX_512bit);
4253 
4254     __ evalignq(IV, S0, IV, 0x06);
4255     __ evalignq(S0, S1, S0, 0x06);
4256     __ evalignq(S1, S2, S1, 0x06);
4257     __ evalignq(S2, S3, S2, 0x06);
4258     __ evalignq(S3, S4, S3, 0x06);
4259     __ evalignq(S4, S5, S4, 0x06);
4260     __ evalignq(S5, S6, S5, 0x06);
4261     __ evalignq(S6, S7, S6, 0x06);
4262 
4263     roundDec(RK2);
4264     roundDec(RK3);
4265     roundDec(RK4);
4266     roundDec(RK5);
4267     roundDec(RK6);
4268     roundDec(RK7);
4269     roundDec(RK8);
4270     roundDec(RK9);
4271     roundDec(RK10);
4272 
4273     __ cmpl(rounds, 44);
4274     __ jcc(Assembler::belowEqual, L_128);
4275     roundDec(RK11);
4276     roundDec(RK12);
4277 
4278     __ cmpl(rounds, 52);
4279     __ jcc(Assembler::belowEqual, L_192);
4280     roundDec(RK13);
4281     roundDec(RK14);
4282 
4283     __ BIND(L_256);
4284     roundDeclast(RK0);
4285     __ jmp(Loop2);
4286 
4287     __ BIND(L_128);
4288     roundDeclast(RK0);
4289     __ jmp(Loop2);
4290 
4291     __ BIND(L_192);
4292     roundDeclast(RK0);
4293 
4294     __ BIND(Loop2);
4295     __ evpxorq(B0, B0, IV, Assembler::AVX_512bit);
4296     __ evpxorq(B1, B1, S0, Assembler::AVX_512bit);
4297     __ evpxorq(B2, B2, S1, Assembler::AVX_512bit);
4298     __ evpxorq(B3, B3, S2, Assembler::AVX_512bit);
4299     __ evpxorq(B4, B4, S3, Assembler::AVX_512bit);
4300     __ evpxorq(B5, B5, S4, Assembler::AVX_512bit);
4301     __ evpxorq(B6, B6, S5, Assembler::AVX_512bit);
4302     __ evpxorq(B7, B7, S6, Assembler::AVX_512bit);
4303     __ evmovdquq(IV, S7, Assembler::AVX_512bit);
4304 
4305     __ evmovdquq(Address(to, 0 * 64), B0, Assembler::AVX_512bit);
4306     __ evmovdquq(Address(to, 1 * 64), B1, Assembler::AVX_512bit);
4307     __ evmovdquq(Address(to, 2 * 64), B2, Assembler::AVX_512bit);
4308     __ evmovdquq(Address(to, 3 * 64), B3, Assembler::AVX_512bit);
4309     __ evmovdquq(Address(to, 4 * 64), B4, Assembler::AVX_512bit);
4310     __ evmovdquq(Address(to, 5 * 64), B5, Assembler::AVX_512bit);
4311     __ evmovdquq(Address(to, 6 * 64), B6, Assembler::AVX_512bit);
4312     __ evmovdquq(Address(to, 7 * 64), B7, Assembler::AVX_512bit);
4313     __ leaq(to, Address(to, 8 * 64));
4314     __ jmp(Loop);
4315 
4316     __ BIND(Lcbc_dec_rem);
4317     __ evshufi64x2(IV, IV, IV, 0x03, Assembler::AVX_512bit);
4318 
4319     __ BIND(Lcbc_dec_rem_loop);
4320     __ subl(len_reg, 16);
4321     __ jcc(Assembler::carrySet, Lcbc_dec_ret);
4322 
4323     __ movdqu(S0, Address(from, 0));
4324     __ evpxorq(B0, S0, RK1, Assembler::AVX_512bit);
4325     __ vaesdec(B0, B0, RK2, Assembler::AVX_512bit);
4326     __ vaesdec(B0, B0, RK3, Assembler::AVX_512bit);
4327     __ vaesdec(B0, B0, RK4, Assembler::AVX_512bit);
4328     __ vaesdec(B0, B0, RK5, Assembler::AVX_512bit);
4329     __ vaesdec(B0, B0, RK6, Assembler::AVX_512bit);
4330     __ vaesdec(B0, B0, RK7, Assembler::AVX_512bit);
4331     __ vaesdec(B0, B0, RK8, Assembler::AVX_512bit);
4332     __ vaesdec(B0, B0, RK9, Assembler::AVX_512bit);
4333     __ vaesdec(B0, B0, RK10, Assembler::AVX_512bit);
4334     __ cmpl(rounds, 44);
4335     __ jcc(Assembler::belowEqual, Lcbc_dec_rem_last);
4336 
4337     __ vaesdec(B0, B0, RK11, Assembler::AVX_512bit);
4338     __ vaesdec(B0, B0, RK12, Assembler::AVX_512bit);
4339     __ cmpl(rounds, 52);
4340     __ jcc(Assembler::belowEqual, Lcbc_dec_rem_last);
4341 
4342     __ vaesdec(B0, B0, RK13, Assembler::AVX_512bit);
4343     __ vaesdec(B0, B0, RK14, Assembler::AVX_512bit);
4344 
4345     __ BIND(Lcbc_dec_rem_last);
4346     __ vaesdeclast(B0, B0, RK0, Assembler::AVX_512bit);
4347 
4348     __ evpxorq(B0, B0, IV, Assembler::AVX_512bit);
4349     __ evmovdquq(IV, S0, Assembler::AVX_512bit);
4350     __ movdqu(Address(to, 0), B0);
4351     __ leaq(from, Address(from, 16));
4352     __ leaq(to, Address(to, 16));
4353     __ jmp(Lcbc_dec_rem_loop);
4354 
4355     __ BIND(Lcbc_dec_ret);
4356     __ movdqu(Address(rvec, 0), IV);
4357 
4358     // Zero out the round keys
4359     __ evpxorq(RK0, RK0, RK0, Assembler::AVX_512bit);
4360     __ evpxorq(RK1, RK1, RK1, Assembler::AVX_512bit);
4361     __ evpxorq(RK2, RK2, RK2, Assembler::AVX_512bit);
4362     __ evpxorq(RK3, RK3, RK3, Assembler::AVX_512bit);
4363     __ evpxorq(RK4, RK4, RK4, Assembler::AVX_512bit);
4364     __ evpxorq(RK5, RK5, RK5, Assembler::AVX_512bit);
4365     __ evpxorq(RK6, RK6, RK6, Assembler::AVX_512bit);
4366     __ evpxorq(RK7, RK7, RK7, Assembler::AVX_512bit);
4367     __ evpxorq(RK8, RK8, RK8, Assembler::AVX_512bit);
4368     __ evpxorq(RK9, RK9, RK9, Assembler::AVX_512bit);
4369     __ evpxorq(RK10, RK10, RK10, Assembler::AVX_512bit);
4370     __ cmpl(rounds, 44);
4371     __ jcc(Assembler::belowEqual, Lcbc_exit);
4372     __ evpxorq(RK11, RK11, RK11, Assembler::AVX_512bit);
4373     __ evpxorq(RK12, RK12, RK12, Assembler::AVX_512bit);
4374     __ cmpl(rounds, 52);
4375     __ jcc(Assembler::belowEqual, Lcbc_exit);
4376     __ evpxorq(RK13, RK13, RK13, Assembler::AVX_512bit);
4377     __ evpxorq(RK14, RK14, RK14, Assembler::AVX_512bit);
4378 
4379     __ BIND(Lcbc_exit);
4380     __ pop(rbx);
4381 #ifdef _WIN64
4382     __ movl(rax, len_mem);
4383 #else
4384     __ pop(rax); // return length
4385 #endif
4386     __ leave(); // required for proper stackwalking of RuntimeStub frame
4387     __ ret(0);
4388     return start;
4389 }
4390 





















































4391   // byte swap x86 long
4392   address generate_ghash_long_swap_mask() {
4393     __ align(CodeEntryAlignment);
4394     StubCodeMark mark(this, "StubRoutines", "ghash_long_swap_mask");
4395     address start = __ pc();
4396     __ emit_data64(0x0f0e0d0c0b0a0908, relocInfo::none );
4397     __ emit_data64(0x0706050403020100, relocInfo::none );
4398   return start;
4399   }
4400 
4401   // byte swap x86 byte array
4402   address generate_ghash_byte_swap_mask() {
4403     __ align(CodeEntryAlignment);
4404     StubCodeMark mark(this, "StubRoutines", "ghash_byte_swap_mask");
4405     address start = __ pc();
4406     __ emit_data64(0x08090a0b0c0d0e0f, relocInfo::none );
4407     __ emit_data64(0x0001020304050607, relocInfo::none );
4408   return start;
4409   }
4410 
4411   /* Single and multi-block ghash operations */
4412   address generate_ghash_processBlocks() {
4413     __ align(CodeEntryAlignment);
4414     Label L_ghash_loop, L_exit;
4415     StubCodeMark mark(this, "StubRoutines", "ghash_processBlocks");
4416     address start = __ pc();
4417 
4418     const Register state        = c_rarg0;
4419     const Register subkeyH      = c_rarg1;
4420     const Register data         = c_rarg2;
4421     const Register blocks       = c_rarg3;
4422 
4423     const XMMRegister xmm_temp0 = xmm0;
4424     const XMMRegister xmm_temp1 = xmm1;
4425     const XMMRegister xmm_temp2 = xmm2;
4426     const XMMRegister xmm_temp3 = xmm3;
4427     const XMMRegister xmm_temp4 = xmm4;
4428     const XMMRegister xmm_temp5 = xmm5;
4429     const XMMRegister xmm_temp6 = xmm6;
4430     const XMMRegister xmm_temp7 = xmm7;
4431     const XMMRegister xmm_temp8 = xmm8;
4432     const XMMRegister xmm_temp9 = xmm9;
4433     const XMMRegister xmm_temp10 = xmm10;
4434 
4435     __ enter();
4436 
4437     __ movdqu(xmm_temp10, ExternalAddress(StubRoutines::x86::ghash_long_swap_mask_addr()));
4438 
4439     __ movdqu(xmm_temp0, Address(state, 0));
4440     __ pshufb(xmm_temp0, xmm_temp10);
4441 
4442 
4443     __ BIND(L_ghash_loop);
4444     __ movdqu(xmm_temp2, Address(data, 0));
4445     __ pshufb(xmm_temp2, ExternalAddress(StubRoutines::x86::ghash_byte_swap_mask_addr()));
4446 
4447     __ movdqu(xmm_temp1, Address(subkeyH, 0));
4448     __ pshufb(xmm_temp1, xmm_temp10);
4449 
4450     __ pxor(xmm_temp0, xmm_temp2);
4451 
4452     //
4453     // Multiply with the hash key
4454     //
4455     __ movdqu(xmm_temp3, xmm_temp0);
4456     __ pclmulqdq(xmm_temp3, xmm_temp1, 0);      // xmm3 holds a0*b0
4457     __ movdqu(xmm_temp4, xmm_temp0);
4458     __ pclmulqdq(xmm_temp4, xmm_temp1, 16);     // xmm4 holds a0*b1
4459 
4460     __ movdqu(xmm_temp5, xmm_temp0);
4461     __ pclmulqdq(xmm_temp5, xmm_temp1, 1);      // xmm5 holds a1*b0
4462     __ movdqu(xmm_temp6, xmm_temp0);
4463     __ pclmulqdq(xmm_temp6, xmm_temp1, 17);     // xmm6 holds a1*b1
4464 
4465     __ pxor(xmm_temp4, xmm_temp5);      // xmm4 holds a0*b1 + a1*b0
4466 
4467     __ movdqu(xmm_temp5, xmm_temp4);    // move the contents of xmm4 to xmm5
4468     __ psrldq(xmm_temp4, 8);    // shift by xmm4 64 bits to the right
4469     __ pslldq(xmm_temp5, 8);    // shift by xmm5 64 bits to the left
4470     __ pxor(xmm_temp3, xmm_temp5);
4471     __ pxor(xmm_temp6, xmm_temp4);      // Register pair <xmm6:xmm3> holds the result
4472                                         // of the carry-less multiplication of
4473                                         // xmm0 by xmm1.
4474 
4475     // We shift the result of the multiplication by one bit position
4476     // to the left to cope for the fact that the bits are reversed.
4477     __ movdqu(xmm_temp7, xmm_temp3);
4478     __ movdqu(xmm_temp8, xmm_temp6);
4479     __ pslld(xmm_temp3, 1);
4480     __ pslld(xmm_temp6, 1);
4481     __ psrld(xmm_temp7, 31);
4482     __ psrld(xmm_temp8, 31);
4483     __ movdqu(xmm_temp9, xmm_temp7);
4484     __ pslldq(xmm_temp8, 4);
4485     __ pslldq(xmm_temp7, 4);
4486     __ psrldq(xmm_temp9, 12);
4487     __ por(xmm_temp3, xmm_temp7);
4488     __ por(xmm_temp6, xmm_temp8);
4489     __ por(xmm_temp6, xmm_temp9);
4490 
4491     //
4492     // First phase of the reduction
4493     //
4494     // Move xmm3 into xmm7, xmm8, xmm9 in order to perform the shifts
4495     // independently.
4496     __ movdqu(xmm_temp7, xmm_temp3);
4497     __ movdqu(xmm_temp8, xmm_temp3);
4498     __ movdqu(xmm_temp9, xmm_temp3);
4499     __ pslld(xmm_temp7, 31);    // packed right shift shifting << 31
4500     __ pslld(xmm_temp8, 30);    // packed right shift shifting << 30
4501     __ pslld(xmm_temp9, 25);    // packed right shift shifting << 25
4502     __ pxor(xmm_temp7, xmm_temp8);      // xor the shifted versions
4503     __ pxor(xmm_temp7, xmm_temp9);
4504     __ movdqu(xmm_temp8, xmm_temp7);
4505     __ pslldq(xmm_temp7, 12);
4506     __ psrldq(xmm_temp8, 4);
4507     __ pxor(xmm_temp3, xmm_temp7);      // first phase of the reduction complete
4508 
4509     //
4510     // Second phase of the reduction
4511     //
4512     // Make 3 copies of xmm3 in xmm2, xmm4, xmm5 for doing these
4513     // shift operations.
4514     __ movdqu(xmm_temp2, xmm_temp3);
4515     __ movdqu(xmm_temp4, xmm_temp3);
4516     __ movdqu(xmm_temp5, xmm_temp3);
4517     __ psrld(xmm_temp2, 1);     // packed left shifting >> 1
4518     __ psrld(xmm_temp4, 2);     // packed left shifting >> 2
4519     __ psrld(xmm_temp5, 7);     // packed left shifting >> 7
4520     __ pxor(xmm_temp2, xmm_temp4);      // xor the shifted versions
4521     __ pxor(xmm_temp2, xmm_temp5);
4522     __ pxor(xmm_temp2, xmm_temp8);
4523     __ pxor(xmm_temp3, xmm_temp2);
4524     __ pxor(xmm_temp6, xmm_temp3);      // the result is in xmm6
4525 
4526     __ decrement(blocks);
4527     __ jcc(Assembler::zero, L_exit);
4528     __ movdqu(xmm_temp0, xmm_temp6);
4529     __ addptr(data, 16);
4530     __ jmp(L_ghash_loop);
4531 
4532     __ BIND(L_exit);
4533     __ pshufb(xmm_temp6, xmm_temp10);          // Byte swap 16-byte result
4534     __ movdqu(Address(state, 0), xmm_temp6);   // store the result
4535     __ leave();
4536     __ ret(0);
4537     return start;
4538   }
4539 
4540   //base64 character set
4541   address base64_charset_addr() {
4542     __ align(CodeEntryAlignment);
4543     StubCodeMark mark(this, "StubRoutines", "base64_charset");
4544     address start = __ pc();
4545     __ emit_data64(0x0000004200000041, relocInfo::none);
4546     __ emit_data64(0x0000004400000043, relocInfo::none);
4547     __ emit_data64(0x0000004600000045, relocInfo::none);
4548     __ emit_data64(0x0000004800000047, relocInfo::none);
4549     __ emit_data64(0x0000004a00000049, relocInfo::none);
4550     __ emit_data64(0x0000004c0000004b, relocInfo::none);
4551     __ emit_data64(0x0000004e0000004d, relocInfo::none);
4552     __ emit_data64(0x000000500000004f, relocInfo::none);
4553     __ emit_data64(0x0000005200000051, relocInfo::none);
4554     __ emit_data64(0x0000005400000053, relocInfo::none);
4555     __ emit_data64(0x0000005600000055, relocInfo::none);
4556     __ emit_data64(0x0000005800000057, relocInfo::none);
4557     __ emit_data64(0x0000005a00000059, relocInfo::none);
4558     __ emit_data64(0x0000006200000061, relocInfo::none);
4559     __ emit_data64(0x0000006400000063, relocInfo::none);
4560     __ emit_data64(0x0000006600000065, relocInfo::none);
4561     __ emit_data64(0x0000006800000067, relocInfo::none);
4562     __ emit_data64(0x0000006a00000069, relocInfo::none);
4563     __ emit_data64(0x0000006c0000006b, relocInfo::none);
4564     __ emit_data64(0x0000006e0000006d, relocInfo::none);
4565     __ emit_data64(0x000000700000006f, relocInfo::none);
4566     __ emit_data64(0x0000007200000071, relocInfo::none);
4567     __ emit_data64(0x0000007400000073, relocInfo::none);
4568     __ emit_data64(0x0000007600000075, relocInfo::none);
4569     __ emit_data64(0x0000007800000077, relocInfo::none);
4570     __ emit_data64(0x0000007a00000079, relocInfo::none);
4571     __ emit_data64(0x0000003100000030, relocInfo::none);
4572     __ emit_data64(0x0000003300000032, relocInfo::none);
4573     __ emit_data64(0x0000003500000034, relocInfo::none);
4574     __ emit_data64(0x0000003700000036, relocInfo::none);
4575     __ emit_data64(0x0000003900000038, relocInfo::none);
4576     __ emit_data64(0x0000002f0000002b, relocInfo::none);
4577     return start;
4578   }
4579 
4580   //base64 url character set
4581   address base64url_charset_addr() {
4582     __ align(CodeEntryAlignment);
4583     StubCodeMark mark(this, "StubRoutines", "base64url_charset");
4584     address start = __ pc();
4585     __ emit_data64(0x0000004200000041, relocInfo::none);
4586     __ emit_data64(0x0000004400000043, relocInfo::none);
4587     __ emit_data64(0x0000004600000045, relocInfo::none);
4588     __ emit_data64(0x0000004800000047, relocInfo::none);
4589     __ emit_data64(0x0000004a00000049, relocInfo::none);
4590     __ emit_data64(0x0000004c0000004b, relocInfo::none);
4591     __ emit_data64(0x0000004e0000004d, relocInfo::none);
4592     __ emit_data64(0x000000500000004f, relocInfo::none);
4593     __ emit_data64(0x0000005200000051, relocInfo::none);
4594     __ emit_data64(0x0000005400000053, relocInfo::none);
4595     __ emit_data64(0x0000005600000055, relocInfo::none);
4596     __ emit_data64(0x0000005800000057, relocInfo::none);
4597     __ emit_data64(0x0000005a00000059, relocInfo::none);
4598     __ emit_data64(0x0000006200000061, relocInfo::none);
4599     __ emit_data64(0x0000006400000063, relocInfo::none);
4600     __ emit_data64(0x0000006600000065, relocInfo::none);
4601     __ emit_data64(0x0000006800000067, relocInfo::none);
4602     __ emit_data64(0x0000006a00000069, relocInfo::none);
4603     __ emit_data64(0x0000006c0000006b, relocInfo::none);
4604     __ emit_data64(0x0000006e0000006d, relocInfo::none);
4605     __ emit_data64(0x000000700000006f, relocInfo::none);
4606     __ emit_data64(0x0000007200000071, relocInfo::none);
4607     __ emit_data64(0x0000007400000073, relocInfo::none);
4608     __ emit_data64(0x0000007600000075, relocInfo::none);
4609     __ emit_data64(0x0000007800000077, relocInfo::none);
4610     __ emit_data64(0x0000007a00000079, relocInfo::none);
4611     __ emit_data64(0x0000003100000030, relocInfo::none);
4612     __ emit_data64(0x0000003300000032, relocInfo::none);
4613     __ emit_data64(0x0000003500000034, relocInfo::none);
4614     __ emit_data64(0x0000003700000036, relocInfo::none);
4615     __ emit_data64(0x0000003900000038, relocInfo::none);
4616     __ emit_data64(0x0000005f0000002d, relocInfo::none);
4617 
4618     return start;
4619   }
4620 
4621   address base64_bswap_mask_addr() {
4622     __ align(CodeEntryAlignment);
4623     StubCodeMark mark(this, "StubRoutines", "bswap_mask_base64");
4624     address start = __ pc();
4625     __ emit_data64(0x0504038002010080, relocInfo::none);
4626     __ emit_data64(0x0b0a098008070680, relocInfo::none);
4627     __ emit_data64(0x0908078006050480, relocInfo::none);
4628     __ emit_data64(0x0f0e0d800c0b0a80, relocInfo::none);
4629     __ emit_data64(0x0605048003020180, relocInfo::none);
4630     __ emit_data64(0x0c0b0a8009080780, relocInfo::none);
4631     __ emit_data64(0x0504038002010080, relocInfo::none);
4632     __ emit_data64(0x0b0a098008070680, relocInfo::none);
4633 
4634     return start;
4635   }
4636 
4637   address base64_right_shift_mask_addr() {
4638     __ align(CodeEntryAlignment);
4639     StubCodeMark mark(this, "StubRoutines", "right_shift_mask");
4640     address start = __ pc();
4641     __ emit_data64(0x0006000400020000, relocInfo::none);
4642     __ emit_data64(0x0006000400020000, relocInfo::none);
4643     __ emit_data64(0x0006000400020000, relocInfo::none);
4644     __ emit_data64(0x0006000400020000, relocInfo::none);
4645     __ emit_data64(0x0006000400020000, relocInfo::none);
4646     __ emit_data64(0x0006000400020000, relocInfo::none);
4647     __ emit_data64(0x0006000400020000, relocInfo::none);
4648     __ emit_data64(0x0006000400020000, relocInfo::none);
4649 
4650     return start;
4651   }
4652 
4653   address base64_left_shift_mask_addr() {
4654     __ align(CodeEntryAlignment);
4655     StubCodeMark mark(this, "StubRoutines", "left_shift_mask");
4656     address start = __ pc();
4657     __ emit_data64(0x0000000200040000, relocInfo::none);
4658     __ emit_data64(0x0000000200040000, relocInfo::none);
4659     __ emit_data64(0x0000000200040000, relocInfo::none);
4660     __ emit_data64(0x0000000200040000, relocInfo::none);
4661     __ emit_data64(0x0000000200040000, relocInfo::none);
4662     __ emit_data64(0x0000000200040000, relocInfo::none);
4663     __ emit_data64(0x0000000200040000, relocInfo::none);
4664     __ emit_data64(0x0000000200040000, relocInfo::none);
4665 
4666     return start;
4667   }
4668 
4669   address base64_and_mask_addr() {
4670     __ align(CodeEntryAlignment);
4671     StubCodeMark mark(this, "StubRoutines", "and_mask");
4672     address start = __ pc();
4673     __ emit_data64(0x3f003f003f000000, relocInfo::none);
4674     __ emit_data64(0x3f003f003f000000, relocInfo::none);
4675     __ emit_data64(0x3f003f003f000000, relocInfo::none);
4676     __ emit_data64(0x3f003f003f000000, relocInfo::none);
4677     __ emit_data64(0x3f003f003f000000, relocInfo::none);
4678     __ emit_data64(0x3f003f003f000000, relocInfo::none);
4679     __ emit_data64(0x3f003f003f000000, relocInfo::none);
4680     __ emit_data64(0x3f003f003f000000, relocInfo::none);
4681     return start;
4682   }
4683 
4684   address base64_gather_mask_addr() {
4685     __ align(CodeEntryAlignment);
4686     StubCodeMark mark(this, "StubRoutines", "gather_mask");
4687     address start = __ pc();
4688     __ emit_data64(0xffffffffffffffff, relocInfo::none);
4689     return start;
4690   }
4691 
4692 // Code for generating Base64 encoding.
4693 // Intrinsic function prototype in Base64.java:
4694 // private void encodeBlock(byte[] src, int sp, int sl, byte[] dst, int dp, boolean isURL) {
4695   address generate_base64_encodeBlock() {
4696     __ align(CodeEntryAlignment);
4697     StubCodeMark mark(this, "StubRoutines", "implEncode");
4698     address start = __ pc();
4699     __ enter();
4700 
4701     // Save callee-saved registers before using them
4702     __ push(r12);
4703     __ push(r13);
4704     __ push(r14);
4705     __ push(r15);
4706 
4707     // arguments
4708     const Register source = c_rarg0; // Source Array
4709     const Register start_offset = c_rarg1; // start offset
4710     const Register end_offset = c_rarg2; // end offset
4711     const Register dest = c_rarg3; // destination array
4712 
4713 #ifndef _WIN64
4714     const Register dp = c_rarg4;  // Position for writing to dest array
4715     const Register isURL = c_rarg5;// Base64 or URL character set
4716 #else
4717     const Address  dp_mem(rbp, 6 * wordSize);  // length is on stack on Win64
4718     const Address isURL_mem(rbp, 7 * wordSize);
4719     const Register isURL = r10;      // pick the volatile windows register
4720     const Register dp = r12;
4721     __ movl(dp, dp_mem);
4722     __ movl(isURL, isURL_mem);
4723 #endif
4724 
4725     const Register length = r14;
4726     Label L_process80, L_process32, L_process3, L_exit, L_processdata;
4727 
4728     // calculate length from offsets
4729     __ movl(length, end_offset);
4730     __ subl(length, start_offset);
4731     __ cmpl(length, 0);
4732     __ jcc(Assembler::lessEqual, L_exit);
4733 
4734     __ lea(r11, ExternalAddress(StubRoutines::x86::base64_charset_addr()));
4735     // check if base64 charset(isURL=0) or base64 url charset(isURL=1) needs to be loaded
4736     __ cmpl(isURL, 0);
4737     __ jcc(Assembler::equal, L_processdata);
4738     __ lea(r11, ExternalAddress(StubRoutines::x86::base64url_charset_addr()));
4739 
4740     // load masks required for encoding data
4741     __ BIND(L_processdata);
4742     __ movdqu(xmm16, ExternalAddress(StubRoutines::x86::base64_gather_mask_addr()));
4743     // Set 64 bits of K register.
4744     __ evpcmpeqb(k3, xmm16, xmm16, Assembler::AVX_512bit);
4745     __ evmovdquq(xmm12, ExternalAddress(StubRoutines::x86::base64_bswap_mask_addr()), Assembler::AVX_256bit, r13);
4746     __ evmovdquq(xmm13, ExternalAddress(StubRoutines::x86::base64_right_shift_mask_addr()), Assembler::AVX_512bit, r13);
4747     __ evmovdquq(xmm14, ExternalAddress(StubRoutines::x86::base64_left_shift_mask_addr()), Assembler::AVX_512bit, r13);
4748     __ evmovdquq(xmm15, ExternalAddress(StubRoutines::x86::base64_and_mask_addr()), Assembler::AVX_512bit, r13);
4749 
4750     // Vector Base64 implementation, producing 96 bytes of encoded data
4751     __ BIND(L_process80);
4752     __ cmpl(length, 80);
4753     __ jcc(Assembler::below, L_process32);
4754     __ evmovdquq(xmm0, Address(source, start_offset, Address::times_1, 0), Assembler::AVX_256bit);
4755     __ evmovdquq(xmm1, Address(source, start_offset, Address::times_1, 24), Assembler::AVX_256bit);
4756     __ evmovdquq(xmm2, Address(source, start_offset, Address::times_1, 48), Assembler::AVX_256bit);
4757 
4758     //permute the input data in such a manner that we have continuity of the source
4759     __ vpermq(xmm3, xmm0, 148, Assembler::AVX_256bit);
4760     __ vpermq(xmm4, xmm1, 148, Assembler::AVX_256bit);
4761     __ vpermq(xmm5, xmm2, 148, Assembler::AVX_256bit);
4762 
4763     //shuffle input and group 3 bytes of data and to it add 0 as the 4th byte.
4764     //we can deal with 12 bytes at a time in a 128 bit register
4765     __ vpshufb(xmm3, xmm3, xmm12, Assembler::AVX_256bit);
4766     __ vpshufb(xmm4, xmm4, xmm12, Assembler::AVX_256bit);
4767     __ vpshufb(xmm5, xmm5, xmm12, Assembler::AVX_256bit);
4768 
4769     //convert byte to word. Each 128 bit register will have 6 bytes for processing
4770     __ vpmovzxbw(xmm3, xmm3, Assembler::AVX_512bit);
4771     __ vpmovzxbw(xmm4, xmm4, Assembler::AVX_512bit);
4772     __ vpmovzxbw(xmm5, xmm5, Assembler::AVX_512bit);
4773 
4774     // Extract bits in the following pattern 6, 4+2, 2+4, 6 to convert 3, 8 bit numbers to 4, 6 bit numbers
4775     __ evpsrlvw(xmm0, xmm3, xmm13,  Assembler::AVX_512bit);
4776     __ evpsrlvw(xmm1, xmm4, xmm13, Assembler::AVX_512bit);
4777     __ evpsrlvw(xmm2, xmm5, xmm13, Assembler::AVX_512bit);
4778 
4779     __ evpsllvw(xmm3, xmm3, xmm14, Assembler::AVX_512bit);
4780     __ evpsllvw(xmm4, xmm4, xmm14, Assembler::AVX_512bit);
4781     __ evpsllvw(xmm5, xmm5, xmm14, Assembler::AVX_512bit);
4782 
4783     __ vpsrlq(xmm0, xmm0, 8, Assembler::AVX_512bit);
4784     __ vpsrlq(xmm1, xmm1, 8, Assembler::AVX_512bit);
4785     __ vpsrlq(xmm2, xmm2, 8, Assembler::AVX_512bit);
4786 
4787     __ vpsllq(xmm3, xmm3, 8, Assembler::AVX_512bit);
4788     __ vpsllq(xmm4, xmm4, 8, Assembler::AVX_512bit);
4789     __ vpsllq(xmm5, xmm5, 8, Assembler::AVX_512bit);
4790 
4791     __ vpandq(xmm3, xmm3, xmm15, Assembler::AVX_512bit);
4792     __ vpandq(xmm4, xmm4, xmm15, Assembler::AVX_512bit);
4793     __ vpandq(xmm5, xmm5, xmm15, Assembler::AVX_512bit);
4794 
4795     // Get the final 4*6 bits base64 encoding
4796     __ vporq(xmm3, xmm3, xmm0, Assembler::AVX_512bit);
4797     __ vporq(xmm4, xmm4, xmm1, Assembler::AVX_512bit);
4798     __ vporq(xmm5, xmm5, xmm2, Assembler::AVX_512bit);
4799 
4800     // Shift
4801     __ vpsrlq(xmm3, xmm3, 8, Assembler::AVX_512bit);
4802     __ vpsrlq(xmm4, xmm4, 8, Assembler::AVX_512bit);
4803     __ vpsrlq(xmm5, xmm5, 8, Assembler::AVX_512bit);
4804 
4805     // look up 6 bits in the base64 character set to fetch the encoding
4806     // we are converting word to dword as gather instructions need dword indices for looking up encoding
4807     __ vextracti64x4(xmm6, xmm3, 0);
4808     __ vpmovzxwd(xmm0, xmm6, Assembler::AVX_512bit);
4809     __ vextracti64x4(xmm6, xmm3, 1);
4810     __ vpmovzxwd(xmm1, xmm6, Assembler::AVX_512bit);
4811 
4812     __ vextracti64x4(xmm6, xmm4, 0);
4813     __ vpmovzxwd(xmm2, xmm6, Assembler::AVX_512bit);
4814     __ vextracti64x4(xmm6, xmm4, 1);
4815     __ vpmovzxwd(xmm3, xmm6, Assembler::AVX_512bit);
4816 
4817     __ vextracti64x4(xmm4, xmm5, 0);
4818     __ vpmovzxwd(xmm6, xmm4, Assembler::AVX_512bit);
4819 
4820     __ vextracti64x4(xmm4, xmm5, 1);
4821     __ vpmovzxwd(xmm7, xmm4, Assembler::AVX_512bit);
4822 
4823     __ kmovql(k2, k3);
4824     __ evpgatherdd(xmm4, k2, Address(r11, xmm0, Address::times_4, 0), Assembler::AVX_512bit);
4825     __ kmovql(k2, k3);
4826     __ evpgatherdd(xmm5, k2, Address(r11, xmm1, Address::times_4, 0), Assembler::AVX_512bit);
4827     __ kmovql(k2, k3);
4828     __ evpgatherdd(xmm8, k2, Address(r11, xmm2, Address::times_4, 0), Assembler::AVX_512bit);
4829     __ kmovql(k2, k3);
4830     __ evpgatherdd(xmm9, k2, Address(r11, xmm3, Address::times_4, 0), Assembler::AVX_512bit);
4831     __ kmovql(k2, k3);
4832     __ evpgatherdd(xmm10, k2, Address(r11, xmm6, Address::times_4, 0), Assembler::AVX_512bit);
4833     __ kmovql(k2, k3);
4834     __ evpgatherdd(xmm11, k2, Address(r11, xmm7, Address::times_4, 0), Assembler::AVX_512bit);
4835 
4836     //Down convert dword to byte. Final output is 16*6 = 96 bytes long
4837     __ evpmovdb(Address(dest, dp, Address::times_1, 0), xmm4, Assembler::AVX_512bit);
4838     __ evpmovdb(Address(dest, dp, Address::times_1, 16), xmm5, Assembler::AVX_512bit);
4839     __ evpmovdb(Address(dest, dp, Address::times_1, 32), xmm8, Assembler::AVX_512bit);
4840     __ evpmovdb(Address(dest, dp, Address::times_1, 48), xmm9, Assembler::AVX_512bit);
4841     __ evpmovdb(Address(dest, dp, Address::times_1, 64), xmm10, Assembler::AVX_512bit);
4842     __ evpmovdb(Address(dest, dp, Address::times_1, 80), xmm11, Assembler::AVX_512bit);
4843 
4844     __ addq(dest, 96);
4845     __ addq(source, 72);
4846     __ subq(length, 72);
4847     __ jmp(L_process80);
4848 
4849     // Vector Base64 implementation generating 32 bytes of encoded data
4850     __ BIND(L_process32);
4851     __ cmpl(length, 32);
4852     __ jcc(Assembler::below, L_process3);
4853     __ evmovdquq(xmm0, Address(source, start_offset), Assembler::AVX_256bit);
4854     __ vpermq(xmm0, xmm0, 148, Assembler::AVX_256bit);
4855     __ vpshufb(xmm6, xmm0, xmm12, Assembler::AVX_256bit);
4856     __ vpmovzxbw(xmm6, xmm6, Assembler::AVX_512bit);
4857     __ evpsrlvw(xmm2, xmm6, xmm13, Assembler::AVX_512bit);
4858     __ evpsllvw(xmm3, xmm6, xmm14, Assembler::AVX_512bit);
4859 
4860     __ vpsrlq(xmm2, xmm2, 8, Assembler::AVX_512bit);
4861     __ vpsllq(xmm3, xmm3, 8, Assembler::AVX_512bit);
4862     __ vpandq(xmm3, xmm3, xmm15, Assembler::AVX_512bit);
4863     __ vporq(xmm1, xmm2, xmm3, Assembler::AVX_512bit);
4864     __ vpsrlq(xmm1, xmm1, 8, Assembler::AVX_512bit);
4865     __ vextracti64x4(xmm9, xmm1, 0);
4866     __ vpmovzxwd(xmm6, xmm9, Assembler::AVX_512bit);
4867     __ vextracti64x4(xmm9, xmm1, 1);
4868     __ vpmovzxwd(xmm5, xmm9,  Assembler::AVX_512bit);
4869     __ kmovql(k2, k3);
4870     __ evpgatherdd(xmm8, k2, Address(r11, xmm6, Address::times_4, 0), Assembler::AVX_512bit);
4871     __ kmovql(k2, k3);
4872     __ evpgatherdd(xmm10, k2, Address(r11, xmm5, Address::times_4, 0), Assembler::AVX_512bit);
4873     __ evpmovdb(Address(dest, dp, Address::times_1, 0), xmm8, Assembler::AVX_512bit);
4874     __ evpmovdb(Address(dest, dp, Address::times_1, 16), xmm10, Assembler::AVX_512bit);
4875     __ subq(length, 24);
4876     __ addq(dest, 32);
4877     __ addq(source, 24);
4878     __ jmp(L_process32);
4879 
4880     // Scalar data processing takes 3 bytes at a time and produces 4 bytes of encoded data
4881     /* This code corresponds to the scalar version of the following snippet in Base64.java
4882     ** int bits = (src[sp0++] & 0xff) << 16 |(src[sp0++] & 0xff) << 8 |(src[sp0++] & 0xff);
4883     ** dst[dp0++] = (byte)base64[(bits >> > 18) & 0x3f];
4884     ** dst[dp0++] = (byte)base64[(bits >> > 12) & 0x3f];
4885     ** dst[dp0++] = (byte)base64[(bits >> > 6) & 0x3f];
4886     ** dst[dp0++] = (byte)base64[bits & 0x3f];*/
4887     __ BIND(L_process3);
4888     __ cmpl(length, 3);
4889     __ jcc(Assembler::below, L_exit);
4890     // Read 1 byte at a time
4891     __ movzbl(rax, Address(source, start_offset));
4892     __ shll(rax, 0x10);
4893     __ movl(r15, rax);
4894     __ movzbl(rax, Address(source, start_offset, Address::times_1, 1));
4895     __ shll(rax, 0x8);
4896     __ movzwl(rax, rax);
4897     __ orl(r15, rax);
4898     __ movzbl(rax, Address(source, start_offset, Address::times_1, 2));
4899     __ orl(rax, r15);
4900     // Save 3 bytes read in r15
4901     __ movl(r15, rax);
4902     __ shrl(rax, 0x12);
4903     __ andl(rax, 0x3f);
4904     // rax contains the index, r11 contains base64 lookup table
4905     __ movb(rax, Address(r11, rax, Address::times_4));
4906     // Write the encoded byte to destination
4907     __ movb(Address(dest, dp, Address::times_1, 0), rax);
4908     __ movl(rax, r15);
4909     __ shrl(rax, 0xc);
4910     __ andl(rax, 0x3f);
4911     __ movb(rax, Address(r11, rax, Address::times_4));
4912     __ movb(Address(dest, dp, Address::times_1, 1), rax);
4913     __ movl(rax, r15);
4914     __ shrl(rax, 0x6);
4915     __ andl(rax, 0x3f);
4916     __ movb(rax, Address(r11, rax, Address::times_4));
4917     __ movb(Address(dest, dp, Address::times_1, 2), rax);
4918     __ movl(rax, r15);
4919     __ andl(rax, 0x3f);
4920     __ movb(rax, Address(r11, rax, Address::times_4));
4921     __ movb(Address(dest, dp, Address::times_1, 3), rax);
4922     __ subl(length, 3);
4923     __ addq(dest, 4);
4924     __ addq(source, 3);
4925     __ jmp(L_process3);
4926     __ BIND(L_exit);
4927     __ pop(r15);
4928     __ pop(r14);
4929     __ pop(r13);
4930     __ pop(r12);
4931     __ leave();
4932     __ ret(0);
4933     return start;
4934   }
4935 
4936   /**
4937    *  Arguments:
4938    *
4939    * Inputs:
4940    *   c_rarg0   - int crc
4941    *   c_rarg1   - byte* buf
4942    *   c_rarg2   - int length
4943    *
4944    * Ouput:
4945    *       rax   - int crc result
4946    */
4947   address generate_updateBytesCRC32() {
4948     assert(UseCRC32Intrinsics, "need AVX and CLMUL instructions");
4949 
4950     __ align(CodeEntryAlignment);
4951     StubCodeMark mark(this, "StubRoutines", "updateBytesCRC32");
4952 
4953     address start = __ pc();
4954     // Win64: rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...)
4955     // Unix:  rdi, rsi, rdx, rcx, r8, r9 (c_rarg0, c_rarg1, ...)
4956     // rscratch1: r10
4957     const Register crc   = c_rarg0;  // crc
4958     const Register buf   = c_rarg1;  // source java byte array address
4959     const Register len   = c_rarg2;  // length
4960     const Register table = c_rarg3;  // crc_table address (reuse register)
4961     const Register tmp   = r11;
4962     assert_different_registers(crc, buf, len, table, tmp, rax);
4963 
4964     BLOCK_COMMENT("Entry:");
4965     __ enter(); // required for proper stackwalking of RuntimeStub frame
4966 
4967     __ kernel_crc32(crc, buf, len, table, tmp);
4968 
4969     __ movl(rax, crc);
4970     __ vzeroupper();
4971     __ leave(); // required for proper stackwalking of RuntimeStub frame
4972     __ ret(0);
4973 
4974     return start;
4975   }
4976 
4977   /**
4978   *  Arguments:
4979   *
4980   * Inputs:
4981   *   c_rarg0   - int crc
4982   *   c_rarg1   - byte* buf
4983   *   c_rarg2   - long length
4984   *   c_rarg3   - table_start - optional (present only when doing a library_call,
4985   *              not used by x86 algorithm)
4986   *
4987   * Ouput:
4988   *       rax   - int crc result
4989   */
4990   address generate_updateBytesCRC32C(bool is_pclmulqdq_supported) {
4991       assert(UseCRC32CIntrinsics, "need SSE4_2");
4992       __ align(CodeEntryAlignment);
4993       StubCodeMark mark(this, "StubRoutines", "updateBytesCRC32C");
4994       address start = __ pc();
4995       //reg.arg        int#0        int#1        int#2        int#3        int#4        int#5        float regs
4996       //Windows        RCX          RDX          R8           R9           none         none         XMM0..XMM3
4997       //Lin / Sol      RDI          RSI          RDX          RCX          R8           R9           XMM0..XMM7
4998       const Register crc = c_rarg0;  // crc
4999       const Register buf = c_rarg1;  // source java byte array address
5000       const Register len = c_rarg2;  // length
5001       const Register a = rax;
5002       const Register j = r9;
5003       const Register k = r10;
5004       const Register l = r11;
5005 #ifdef _WIN64
5006       const Register y = rdi;
5007       const Register z = rsi;
5008 #else
5009       const Register y = rcx;
5010       const Register z = r8;
5011 #endif
5012       assert_different_registers(crc, buf, len, a, j, k, l, y, z);
5013 
5014       BLOCK_COMMENT("Entry:");
5015       __ enter(); // required for proper stackwalking of RuntimeStub frame
5016 #ifdef _WIN64
5017       __ push(y);
5018       __ push(z);
5019 #endif
5020       __ crc32c_ipl_alg2_alt2(crc, buf, len,
5021                               a, j, k,
5022                               l, y, z,
5023                               c_farg0, c_farg1, c_farg2,
5024                               is_pclmulqdq_supported);
5025       __ movl(rax, crc);
5026 #ifdef _WIN64
5027       __ pop(z);
5028       __ pop(y);
5029 #endif
5030       __ vzeroupper();
5031       __ leave(); // required for proper stackwalking of RuntimeStub frame
5032       __ ret(0);
5033 
5034       return start;
5035   }
5036 
5037   /**
5038    *  Arguments:
5039    *
5040    *  Input:
5041    *    c_rarg0   - x address
5042    *    c_rarg1   - x length
5043    *    c_rarg2   - y address
5044    *    c_rarg3   - y length
5045    * not Win64
5046    *    c_rarg4   - z address
5047    *    c_rarg5   - z length
5048    * Win64
5049    *    rsp+40    - z address
5050    *    rsp+48    - z length
5051    */
5052   address generate_multiplyToLen() {
5053     __ align(CodeEntryAlignment);
5054     StubCodeMark mark(this, "StubRoutines", "multiplyToLen");
5055 
5056     address start = __ pc();
5057     // Win64: rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...)
5058     // Unix:  rdi, rsi, rdx, rcx, r8, r9 (c_rarg0, c_rarg1, ...)
5059     const Register x     = rdi;
5060     const Register xlen  = rax;
5061     const Register y     = rsi;
5062     const Register ylen  = rcx;
5063     const Register z     = r8;
5064     const Register zlen  = r11;
5065 
5066     // Next registers will be saved on stack in multiply_to_len().
5067     const Register tmp1  = r12;
5068     const Register tmp2  = r13;
5069     const Register tmp3  = r14;
5070     const Register tmp4  = r15;
5071     const Register tmp5  = rbx;
5072 
5073     BLOCK_COMMENT("Entry:");
5074     __ enter(); // required for proper stackwalking of RuntimeStub frame
5075 
5076 #ifndef _WIN64
5077     __ movptr(zlen, r9); // Save r9 in r11 - zlen
5078 #endif
5079     setup_arg_regs(4); // x => rdi, xlen => rsi, y => rdx
5080                        // ylen => rcx, z => r8, zlen => r11
5081                        // r9 and r10 may be used to save non-volatile registers
5082 #ifdef _WIN64
5083     // last 2 arguments (#4, #5) are on stack on Win64
5084     __ movptr(z, Address(rsp, 6 * wordSize));
5085     __ movptr(zlen, Address(rsp, 7 * wordSize));
5086 #endif
5087 
5088     __ movptr(xlen, rsi);
5089     __ movptr(y,    rdx);
5090     __ multiply_to_len(x, xlen, y, ylen, z, zlen, tmp1, tmp2, tmp3, tmp4, tmp5);
5091 
5092     restore_arg_regs();
5093 
5094     __ leave(); // required for proper stackwalking of RuntimeStub frame
5095     __ ret(0);
5096 
5097     return start;
5098   }
5099 
5100   /**
5101   *  Arguments:
5102   *
5103   *  Input:
5104   *    c_rarg0   - obja     address
5105   *    c_rarg1   - objb     address
5106   *    c_rarg3   - length   length
5107   *    c_rarg4   - scale    log2_array_indxscale
5108   *
5109   *  Output:
5110   *        rax   - int >= mismatched index, < 0 bitwise complement of tail
5111   */
5112   address generate_vectorizedMismatch() {
5113     __ align(CodeEntryAlignment);
5114     StubCodeMark mark(this, "StubRoutines", "vectorizedMismatch");
5115     address start = __ pc();
5116 
5117     BLOCK_COMMENT("Entry:");
5118     __ enter();
5119 
5120 #ifdef _WIN64  // Win64: rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...)
5121     const Register scale = c_rarg0;  //rcx, will exchange with r9
5122     const Register objb = c_rarg1;   //rdx
5123     const Register length = c_rarg2; //r8
5124     const Register obja = c_rarg3;   //r9
5125     __ xchgq(obja, scale);  //now obja and scale contains the correct contents
5126 
5127     const Register tmp1 = r10;
5128     const Register tmp2 = r11;
5129 #endif
5130 #ifndef _WIN64 // Unix:  rdi, rsi, rdx, rcx, r8, r9 (c_rarg0, c_rarg1, ...)
5131     const Register obja = c_rarg0;   //U:rdi
5132     const Register objb = c_rarg1;   //U:rsi
5133     const Register length = c_rarg2; //U:rdx
5134     const Register scale = c_rarg3;  //U:rcx
5135     const Register tmp1 = r8;
5136     const Register tmp2 = r9;
5137 #endif
5138     const Register result = rax; //return value
5139     const XMMRegister vec0 = xmm0;
5140     const XMMRegister vec1 = xmm1;
5141     const XMMRegister vec2 = xmm2;
5142 
5143     __ vectorized_mismatch(obja, objb, length, scale, result, tmp1, tmp2, vec0, vec1, vec2);
5144 
5145     __ vzeroupper();
5146     __ leave();
5147     __ ret(0);
5148 
5149     return start;
5150   }
5151 
5152 /**
5153    *  Arguments:
5154    *
5155   //  Input:
5156   //    c_rarg0   - x address
5157   //    c_rarg1   - x length
5158   //    c_rarg2   - z address
5159   //    c_rarg3   - z lenth
5160    *
5161    */
5162   address generate_squareToLen() {
5163 
5164     __ align(CodeEntryAlignment);
5165     StubCodeMark mark(this, "StubRoutines", "squareToLen");
5166 
5167     address start = __ pc();
5168     // Win64: rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...)
5169     // Unix:  rdi, rsi, rdx, rcx (c_rarg0, c_rarg1, ...)
5170     const Register x      = rdi;
5171     const Register len    = rsi;
5172     const Register z      = r8;
5173     const Register zlen   = rcx;
5174 
5175    const Register tmp1      = r12;
5176    const Register tmp2      = r13;
5177    const Register tmp3      = r14;
5178    const Register tmp4      = r15;
5179    const Register tmp5      = rbx;
5180 
5181     BLOCK_COMMENT("Entry:");
5182     __ enter(); // required for proper stackwalking of RuntimeStub frame
5183 
5184     setup_arg_regs(4); // x => rdi, len => rsi, z => rdx
5185                        // zlen => rcx
5186                        // r9 and r10 may be used to save non-volatile registers
5187     __ movptr(r8, rdx);
5188     __ square_to_len(x, len, z, zlen, tmp1, tmp2, tmp3, tmp4, tmp5, rdx, rax);
5189 
5190     restore_arg_regs();
5191 
5192     __ leave(); // required for proper stackwalking of RuntimeStub frame
5193     __ ret(0);
5194 
5195     return start;
5196   }
5197 
5198   address generate_method_entry_barrier() {
5199     __ align(CodeEntryAlignment);
5200     StubCodeMark mark(this, "StubRoutines", "nmethod_entry_barrier");
5201 
5202     Label deoptimize_label;
5203 
5204     address start = __ pc();
5205 
5206     __ push(-1); // cookie, this is used for writing the new rsp when deoptimizing
5207 
5208     BLOCK_COMMENT("Entry:");
5209     __ enter(); // save rbp
5210 
5211     // save c_rarg0, because we want to use that value.
5212     // We could do without it but then we depend on the number of slots used by pusha
5213     __ push(c_rarg0);
5214 
5215     __ lea(c_rarg0, Address(rsp, wordSize * 3)); // 1 for cookie, 1 for rbp, 1 for c_rarg0 - this should be the return address
5216 
5217     __ pusha();
5218 
5219     // The method may have floats as arguments, and we must spill them before calling
5220     // the VM runtime.
5221     assert(Argument::n_float_register_parameters_j == 8, "Assumption");
5222     const int xmm_size = wordSize * 2;
5223     const int xmm_spill_size = xmm_size * Argument::n_float_register_parameters_j;
5224     __ subptr(rsp, xmm_spill_size);
5225     __ movdqu(Address(rsp, xmm_size * 7), xmm7);
5226     __ movdqu(Address(rsp, xmm_size * 6), xmm6);
5227     __ movdqu(Address(rsp, xmm_size * 5), xmm5);
5228     __ movdqu(Address(rsp, xmm_size * 4), xmm4);
5229     __ movdqu(Address(rsp, xmm_size * 3), xmm3);
5230     __ movdqu(Address(rsp, xmm_size * 2), xmm2);
5231     __ movdqu(Address(rsp, xmm_size * 1), xmm1);
5232     __ movdqu(Address(rsp, xmm_size * 0), xmm0);
5233 
5234     __ call_VM_leaf(CAST_FROM_FN_PTR(address, static_cast<int (*)(address*)>(BarrierSetNMethod::nmethod_stub_entry_barrier)), 1);
5235 
5236     __ movdqu(xmm0, Address(rsp, xmm_size * 0));
5237     __ movdqu(xmm1, Address(rsp, xmm_size * 1));
5238     __ movdqu(xmm2, Address(rsp, xmm_size * 2));
5239     __ movdqu(xmm3, Address(rsp, xmm_size * 3));
5240     __ movdqu(xmm4, Address(rsp, xmm_size * 4));
5241     __ movdqu(xmm5, Address(rsp, xmm_size * 5));
5242     __ movdqu(xmm6, Address(rsp, xmm_size * 6));
5243     __ movdqu(xmm7, Address(rsp, xmm_size * 7));
5244     __ addptr(rsp, xmm_spill_size);
5245 
5246     __ cmpl(rax, 1); // 1 means deoptimize
5247     __ jcc(Assembler::equal, deoptimize_label);
5248 
5249     __ popa();
5250     __ pop(c_rarg0);
5251 
5252     __ leave();
5253 
5254     __ addptr(rsp, 1 * wordSize); // cookie
5255     __ ret(0);
5256 
5257 
5258     __ BIND(deoptimize_label);
5259 
5260     __ popa();
5261     __ pop(c_rarg0);
5262 
5263     __ leave();
5264 
5265     // this can be taken out, but is good for verification purposes. getting a SIGSEGV
5266     // here while still having a correct stack is valuable
5267     __ testptr(rsp, Address(rsp, 0));
5268 
5269     __ movptr(rsp, Address(rsp, 0)); // new rsp was written in the barrier
5270     __ jmp(Address(rsp, -1 * wordSize)); // jmp target should be callers verified_entry_point
5271 
5272     return start;
5273   }
5274 
5275    /**
5276    *  Arguments:
5277    *
5278    *  Input:
5279    *    c_rarg0   - out address
5280    *    c_rarg1   - in address
5281    *    c_rarg2   - offset
5282    *    c_rarg3   - len
5283    * not Win64
5284    *    c_rarg4   - k
5285    * Win64
5286    *    rsp+40    - k
5287    */
5288   address generate_mulAdd() {
5289     __ align(CodeEntryAlignment);
5290     StubCodeMark mark(this, "StubRoutines", "mulAdd");
5291 
5292     address start = __ pc();
5293     // Win64: rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...)
5294     // Unix:  rdi, rsi, rdx, rcx, r8, r9 (c_rarg0, c_rarg1, ...)
5295     const Register out     = rdi;
5296     const Register in      = rsi;
5297     const Register offset  = r11;
5298     const Register len     = rcx;
5299     const Register k       = r8;
5300 
5301     // Next registers will be saved on stack in mul_add().
5302     const Register tmp1  = r12;
5303     const Register tmp2  = r13;
5304     const Register tmp3  = r14;
5305     const Register tmp4  = r15;
5306     const Register tmp5  = rbx;
5307 
5308     BLOCK_COMMENT("Entry:");
5309     __ enter(); // required for proper stackwalking of RuntimeStub frame
5310 
5311     setup_arg_regs(4); // out => rdi, in => rsi, offset => rdx
5312                        // len => rcx, k => r8
5313                        // r9 and r10 may be used to save non-volatile registers
5314 #ifdef _WIN64
5315     // last argument is on stack on Win64
5316     __ movl(k, Address(rsp, 6 * wordSize));
5317 #endif
5318     __ movptr(r11, rdx);  // move offset in rdx to offset(r11)
5319     __ mul_add(out, in, offset, len, k, tmp1, tmp2, tmp3, tmp4, tmp5, rdx, rax);
5320 
5321     restore_arg_regs();
5322 
5323     __ leave(); // required for proper stackwalking of RuntimeStub frame
5324     __ ret(0);
5325 
5326     return start;
5327   }
5328 
5329   address generate_libmExp() {
5330     StubCodeMark mark(this, "StubRoutines", "libmExp");
5331 
5332     address start = __ pc();
5333 
5334     const XMMRegister x0  = xmm0;
5335     const XMMRegister x1  = xmm1;
5336     const XMMRegister x2  = xmm2;
5337     const XMMRegister x3  = xmm3;
5338 
5339     const XMMRegister x4  = xmm4;
5340     const XMMRegister x5  = xmm5;
5341     const XMMRegister x6  = xmm6;
5342     const XMMRegister x7  = xmm7;
5343 
5344     const Register tmp   = r11;
5345 
5346     BLOCK_COMMENT("Entry:");
5347     __ enter(); // required for proper stackwalking of RuntimeStub frame
5348 
5349     __ fast_exp(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp);
5350 
5351     __ leave(); // required for proper stackwalking of RuntimeStub frame
5352     __ ret(0);
5353 
5354     return start;
5355 
5356   }
5357 
5358   address generate_libmLog() {
5359     StubCodeMark mark(this, "StubRoutines", "libmLog");
5360 
5361     address start = __ pc();
5362 
5363     const XMMRegister x0 = xmm0;
5364     const XMMRegister x1 = xmm1;
5365     const XMMRegister x2 = xmm2;
5366     const XMMRegister x3 = xmm3;
5367 
5368     const XMMRegister x4 = xmm4;
5369     const XMMRegister x5 = xmm5;
5370     const XMMRegister x6 = xmm6;
5371     const XMMRegister x7 = xmm7;
5372 
5373     const Register tmp1 = r11;
5374     const Register tmp2 = r8;
5375 
5376     BLOCK_COMMENT("Entry:");
5377     __ enter(); // required for proper stackwalking of RuntimeStub frame
5378 
5379     __ fast_log(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp1, tmp2);
5380 
5381     __ leave(); // required for proper stackwalking of RuntimeStub frame
5382     __ ret(0);
5383 
5384     return start;
5385 
5386   }
5387 
5388   address generate_libmLog10() {
5389     StubCodeMark mark(this, "StubRoutines", "libmLog10");
5390 
5391     address start = __ pc();
5392 
5393     const XMMRegister x0 = xmm0;
5394     const XMMRegister x1 = xmm1;
5395     const XMMRegister x2 = xmm2;
5396     const XMMRegister x3 = xmm3;
5397 
5398     const XMMRegister x4 = xmm4;
5399     const XMMRegister x5 = xmm5;
5400     const XMMRegister x6 = xmm6;
5401     const XMMRegister x7 = xmm7;
5402 
5403     const Register tmp = r11;
5404 
5405     BLOCK_COMMENT("Entry:");
5406     __ enter(); // required for proper stackwalking of RuntimeStub frame
5407 
5408     __ fast_log10(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp);
5409 
5410     __ leave(); // required for proper stackwalking of RuntimeStub frame
5411     __ ret(0);
5412 
5413     return start;
5414 
5415   }
5416 
5417   address generate_libmPow() {
5418     StubCodeMark mark(this, "StubRoutines", "libmPow");
5419 
5420     address start = __ pc();
5421 
5422     const XMMRegister x0 = xmm0;
5423     const XMMRegister x1 = xmm1;
5424     const XMMRegister x2 = xmm2;
5425     const XMMRegister x3 = xmm3;
5426 
5427     const XMMRegister x4 = xmm4;
5428     const XMMRegister x5 = xmm5;
5429     const XMMRegister x6 = xmm6;
5430     const XMMRegister x7 = xmm7;
5431 
5432     const Register tmp1 = r8;
5433     const Register tmp2 = r9;
5434     const Register tmp3 = r10;
5435     const Register tmp4 = r11;
5436 
5437     BLOCK_COMMENT("Entry:");
5438     __ enter(); // required for proper stackwalking of RuntimeStub frame
5439 
5440     __ fast_pow(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp1, tmp2, tmp3, tmp4);
5441 
5442     __ leave(); // required for proper stackwalking of RuntimeStub frame
5443     __ ret(0);
5444 
5445     return start;
5446 
5447   }
5448 
5449   address generate_libmSin() {
5450     StubCodeMark mark(this, "StubRoutines", "libmSin");
5451 
5452     address start = __ pc();
5453 
5454     const XMMRegister x0 = xmm0;
5455     const XMMRegister x1 = xmm1;
5456     const XMMRegister x2 = xmm2;
5457     const XMMRegister x3 = xmm3;
5458 
5459     const XMMRegister x4 = xmm4;
5460     const XMMRegister x5 = xmm5;
5461     const XMMRegister x6 = xmm6;
5462     const XMMRegister x7 = xmm7;
5463 
5464     const Register tmp1 = r8;
5465     const Register tmp2 = r9;
5466     const Register tmp3 = r10;
5467     const Register tmp4 = r11;
5468 
5469     BLOCK_COMMENT("Entry:");
5470     __ enter(); // required for proper stackwalking of RuntimeStub frame
5471 
5472 #ifdef _WIN64
5473     __ push(rsi);
5474     __ push(rdi);
5475 #endif
5476     __ fast_sin(x0, x1, x2, x3, x4, x5, x6, x7, rax, rbx, rcx, rdx, tmp1, tmp2, tmp3, tmp4);
5477 
5478 #ifdef _WIN64
5479     __ pop(rdi);
5480     __ pop(rsi);
5481 #endif
5482 
5483     __ leave(); // required for proper stackwalking of RuntimeStub frame
5484     __ ret(0);
5485 
5486     return start;
5487 
5488   }
5489 
5490   address generate_libmCos() {
5491     StubCodeMark mark(this, "StubRoutines", "libmCos");
5492 
5493     address start = __ pc();
5494 
5495     const XMMRegister x0 = xmm0;
5496     const XMMRegister x1 = xmm1;
5497     const XMMRegister x2 = xmm2;
5498     const XMMRegister x3 = xmm3;
5499 
5500     const XMMRegister x4 = xmm4;
5501     const XMMRegister x5 = xmm5;
5502     const XMMRegister x6 = xmm6;
5503     const XMMRegister x7 = xmm7;
5504 
5505     const Register tmp1 = r8;
5506     const Register tmp2 = r9;
5507     const Register tmp3 = r10;
5508     const Register tmp4 = r11;
5509 
5510     BLOCK_COMMENT("Entry:");
5511     __ enter(); // required for proper stackwalking of RuntimeStub frame
5512 
5513 #ifdef _WIN64
5514     __ push(rsi);
5515     __ push(rdi);
5516 #endif
5517     __ fast_cos(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp1, tmp2, tmp3, tmp4);
5518 
5519 #ifdef _WIN64
5520     __ pop(rdi);
5521     __ pop(rsi);
5522 #endif
5523 
5524     __ leave(); // required for proper stackwalking of RuntimeStub frame
5525     __ ret(0);
5526 
5527     return start;
5528 
5529   }
5530 
5531   address generate_libmTan() {
5532     StubCodeMark mark(this, "StubRoutines", "libmTan");
5533 
5534     address start = __ pc();
5535 
5536     const XMMRegister x0 = xmm0;
5537     const XMMRegister x1 = xmm1;
5538     const XMMRegister x2 = xmm2;
5539     const XMMRegister x3 = xmm3;
5540 
5541     const XMMRegister x4 = xmm4;
5542     const XMMRegister x5 = xmm5;
5543     const XMMRegister x6 = xmm6;
5544     const XMMRegister x7 = xmm7;
5545 
5546     const Register tmp1 = r8;
5547     const Register tmp2 = r9;
5548     const Register tmp3 = r10;
5549     const Register tmp4 = r11;
5550 
5551     BLOCK_COMMENT("Entry:");
5552     __ enter(); // required for proper stackwalking of RuntimeStub frame
5553 
5554 #ifdef _WIN64
5555     __ push(rsi);
5556     __ push(rdi);
5557 #endif
5558     __ fast_tan(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp1, tmp2, tmp3, tmp4);
5559 
5560 #ifdef _WIN64
5561     __ pop(rdi);
5562     __ pop(rsi);
5563 #endif
5564 
5565     __ leave(); // required for proper stackwalking of RuntimeStub frame
5566     __ ret(0);
5567 
5568     return start;
5569 
5570   }
5571 
5572 #undef __
5573 #define __ masm->
5574 
5575   // Continuation point for throwing of implicit exceptions that are
5576   // not handled in the current activation. Fabricates an exception
5577   // oop and initiates normal exception dispatching in this
5578   // frame. Since we need to preserve callee-saved values (currently
5579   // only for C2, but done for C1 as well) we need a callee-saved oop
5580   // map and therefore have to make these stubs into RuntimeStubs
5581   // rather than BufferBlobs.  If the compiler needs all registers to
5582   // be preserved between the fault point and the exception handler
5583   // then it must assume responsibility for that in
5584   // AbstractCompiler::continuation_for_implicit_null_exception or
5585   // continuation_for_implicit_division_by_zero_exception. All other
5586   // implicit exceptions (e.g., NullPointerException or
5587   // AbstractMethodError on entry) are either at call sites or
5588   // otherwise assume that stack unwinding will be initiated, so
5589   // caller saved registers were assumed volatile in the compiler.
5590   address generate_throw_exception(const char* name,
5591                                    address runtime_entry,
5592                                    Register arg1 = noreg,
5593                                    Register arg2 = noreg) {
5594     // Information about frame layout at time of blocking runtime call.
5595     // Note that we only have to preserve callee-saved registers since
5596     // the compilers are responsible for supplying a continuation point
5597     // if they expect all registers to be preserved.
5598     enum layout {
5599       rbp_off = frame::arg_reg_save_area_bytes/BytesPerInt,
5600       rbp_off2,
5601       return_off,
5602       return_off2,
5603       framesize // inclusive of return address
5604     };
5605 
5606     int insts_size = 512;
5607     int locs_size  = 64;
5608 
5609     CodeBuffer code(name, insts_size, locs_size);
5610     OopMapSet* oop_maps  = new OopMapSet();
5611     MacroAssembler* masm = new MacroAssembler(&code);
5612 
5613     address start = __ pc();
5614 
5615     // This is an inlined and slightly modified version of call_VM
5616     // which has the ability to fetch the return PC out of
5617     // thread-local storage and also sets up last_Java_sp slightly
5618     // differently than the real call_VM
5619 
5620     __ enter(); // required for proper stackwalking of RuntimeStub frame
5621 
5622     assert(is_even(framesize/2), "sp not 16-byte aligned");
5623 
5624     // return address and rbp are already in place
5625     __ subptr(rsp, (framesize-4) << LogBytesPerInt); // prolog
5626 
5627     int frame_complete = __ pc() - start;
5628 
5629     // Set up last_Java_sp and last_Java_fp
5630     address the_pc = __ pc();
5631     __ set_last_Java_frame(rsp, rbp, the_pc);
5632     __ andptr(rsp, -(StackAlignmentInBytes));    // Align stack
5633 
5634     // Call runtime
5635     if (arg1 != noreg) {
5636       assert(arg2 != c_rarg1, "clobbered");
5637       __ movptr(c_rarg1, arg1);
5638     }
5639     if (arg2 != noreg) {
5640       __ movptr(c_rarg2, arg2);
5641     }
5642     __ movptr(c_rarg0, r15_thread);
5643     BLOCK_COMMENT("call runtime_entry");
5644     __ call(RuntimeAddress(runtime_entry));
5645 
5646     // Generate oop map
5647     OopMap* map = new OopMap(framesize, 0);
5648 
5649     oop_maps->add_gc_map(the_pc - start, map);
5650 
5651     __ reset_last_Java_frame(true);
5652 
5653     __ leave(); // required for proper stackwalking of RuntimeStub frame
5654 
5655     // check for pending exceptions
5656 #ifdef ASSERT
5657     Label L;
5658     __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()),
5659             (int32_t) NULL_WORD);
5660     __ jcc(Assembler::notEqual, L);
5661     __ should_not_reach_here();
5662     __ bind(L);
5663 #endif // ASSERT
5664     __ jump(RuntimeAddress(StubRoutines::forward_exception_entry()));
5665 
5666 
5667     // codeBlob framesize is in words (not VMRegImpl::slot_size)
5668     RuntimeStub* stub =
5669       RuntimeStub::new_runtime_stub(name,
5670                                     &code,
5671                                     frame_complete,
5672                                     (framesize >> (LogBytesPerWord - LogBytesPerInt)),
5673                                     oop_maps, false);
5674     return stub->entry_point();
5675   }
5676 
5677   void create_control_words() {
5678     // Round to nearest, 53-bit mode, exceptions masked
5679     StubRoutines::_fpu_cntrl_wrd_std   = 0x027F;
5680     // Round to zero, 53-bit mode, exception mased
5681     StubRoutines::_fpu_cntrl_wrd_trunc = 0x0D7F;
5682     // Round to nearest, 24-bit mode, exceptions masked
5683     StubRoutines::_fpu_cntrl_wrd_24    = 0x007F;
5684     // Round to nearest, 64-bit mode, exceptions masked
5685     StubRoutines::_fpu_cntrl_wrd_64    = 0x037F;
5686     // Round to nearest, 64-bit mode, exceptions masked
5687     StubRoutines::_mxcsr_std           = 0x1F80;
5688     // Note: the following two constants are 80-bit values
5689     //       layout is critical for correct loading by FPU.
5690     // Bias for strict fp multiply/divide
5691     StubRoutines::_fpu_subnormal_bias1[0]= 0x00000000; // 2^(-15360) == 0x03ff 8000 0000 0000 0000
5692     StubRoutines::_fpu_subnormal_bias1[1]= 0x80000000;
5693     StubRoutines::_fpu_subnormal_bias1[2]= 0x03ff;
5694     // Un-Bias for strict fp multiply/divide
5695     StubRoutines::_fpu_subnormal_bias2[0]= 0x00000000; // 2^(+15360) == 0x7bff 8000 0000 0000 0000
5696     StubRoutines::_fpu_subnormal_bias2[1]= 0x80000000;
5697     StubRoutines::_fpu_subnormal_bias2[2]= 0x7bff;
5698   }
5699 
5700   // Initialization
5701   void generate_initial() {
5702     // Generates all stubs and initializes the entry points
5703 
5704     // This platform-specific settings are needed by generate_call_stub()
5705     create_control_words();
5706 
5707     // entry points that exist in all platforms Note: This is code
5708     // that could be shared among different platforms - however the
5709     // benefit seems to be smaller than the disadvantage of having a
5710     // much more complicated generator structure. See also comment in
5711     // stubRoutines.hpp.
5712 
5713     StubRoutines::_forward_exception_entry = generate_forward_exception();
5714 
5715     StubRoutines::_call_stub_entry =
5716       generate_call_stub(StubRoutines::_call_stub_return_address);
5717 
5718     // is referenced by megamorphic call
5719     StubRoutines::_catch_exception_entry = generate_catch_exception();
5720 
5721     // atomic calls
5722     StubRoutines::_atomic_xchg_entry          = generate_atomic_xchg();
5723     StubRoutines::_atomic_xchg_long_entry     = generate_atomic_xchg_long();
5724     StubRoutines::_atomic_cmpxchg_entry       = generate_atomic_cmpxchg();
5725     StubRoutines::_atomic_cmpxchg_byte_entry  = generate_atomic_cmpxchg_byte();
5726     StubRoutines::_atomic_cmpxchg_long_entry  = generate_atomic_cmpxchg_long();
5727     StubRoutines::_atomic_add_entry           = generate_atomic_add();
5728     StubRoutines::_atomic_add_long_entry      = generate_atomic_add_long();
5729     StubRoutines::_fence_entry                = generate_orderaccess_fence();
5730 
5731     // platform dependent
5732     StubRoutines::x86::_get_previous_fp_entry = generate_get_previous_fp();
5733     StubRoutines::x86::_get_previous_sp_entry = generate_get_previous_sp();
5734 
5735     StubRoutines::x86::_verify_mxcsr_entry    = generate_verify_mxcsr();
5736 
5737     // Build this early so it's available for the interpreter.
5738     StubRoutines::_throw_StackOverflowError_entry =
5739       generate_throw_exception("StackOverflowError throw_exception",
5740                                CAST_FROM_FN_PTR(address,
5741                                                 SharedRuntime::
5742                                                 throw_StackOverflowError));
5743     StubRoutines::_throw_delayed_StackOverflowError_entry =
5744       generate_throw_exception("delayed StackOverflowError throw_exception",
5745                                CAST_FROM_FN_PTR(address,
5746                                                 SharedRuntime::
5747                                                 throw_delayed_StackOverflowError));
5748     if (UseCRC32Intrinsics) {
5749       // set table address before stub generation which use it
5750       StubRoutines::_crc_table_adr = (address)StubRoutines::x86::_crc_table;
5751       StubRoutines::_updateBytesCRC32 = generate_updateBytesCRC32();
5752     }
5753 
5754     if (UseCRC32CIntrinsics) {
5755       bool supports_clmul = VM_Version::supports_clmul();
5756       StubRoutines::x86::generate_CRC32C_table(supports_clmul);
5757       StubRoutines::_crc32c_table_addr = (address)StubRoutines::x86::_crc32c_table;
5758       StubRoutines::_updateBytesCRC32C = generate_updateBytesCRC32C(supports_clmul);
5759     }
5760     if (VM_Version::supports_sse2() && UseLibmIntrinsic && InlineIntrinsics) {
5761       if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin) ||
5762           vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos) ||
5763           vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dtan)) {
5764         StubRoutines::x86::_ONEHALF_adr = (address)StubRoutines::x86::_ONEHALF;
5765         StubRoutines::x86::_P_2_adr = (address)StubRoutines::x86::_P_2;
5766         StubRoutines::x86::_SC_4_adr = (address)StubRoutines::x86::_SC_4;
5767         StubRoutines::x86::_Ctable_adr = (address)StubRoutines::x86::_Ctable;
5768         StubRoutines::x86::_SC_2_adr = (address)StubRoutines::x86::_SC_2;
5769         StubRoutines::x86::_SC_3_adr = (address)StubRoutines::x86::_SC_3;
5770         StubRoutines::x86::_SC_1_adr = (address)StubRoutines::x86::_SC_1;
5771         StubRoutines::x86::_PI_INV_TABLE_adr = (address)StubRoutines::x86::_PI_INV_TABLE;
5772         StubRoutines::x86::_PI_4_adr = (address)StubRoutines::x86::_PI_4;
5773         StubRoutines::x86::_PI32INV_adr = (address)StubRoutines::x86::_PI32INV;
5774         StubRoutines::x86::_SIGN_MASK_adr = (address)StubRoutines::x86::_SIGN_MASK;
5775         StubRoutines::x86::_P_1_adr = (address)StubRoutines::x86::_P_1;
5776         StubRoutines::x86::_P_3_adr = (address)StubRoutines::x86::_P_3;
5777         StubRoutines::x86::_NEG_ZERO_adr = (address)StubRoutines::x86::_NEG_ZERO;
5778       }
5779       if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dexp)) {
5780         StubRoutines::_dexp = generate_libmExp();
5781       }
5782       if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dlog)) {
5783         StubRoutines::_dlog = generate_libmLog();
5784       }
5785       if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dlog10)) {
5786         StubRoutines::_dlog10 = generate_libmLog10();
5787       }
5788       if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dpow)) {
5789         StubRoutines::_dpow = generate_libmPow();
5790       }
5791       if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin)) {
5792         StubRoutines::_dsin = generate_libmSin();
5793       }
5794       if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos)) {
5795         StubRoutines::_dcos = generate_libmCos();
5796       }
5797       if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dtan)) {
5798         StubRoutines::_dtan = generate_libmTan();
5799       }
5800     }
5801   }
5802 
5803   void generate_all() {
5804     // Generates all stubs and initializes the entry points
5805 
5806     // These entry points require SharedInfo::stack0 to be set up in
5807     // non-core builds and need to be relocatable, so they each
5808     // fabricate a RuntimeStub internally.
5809     StubRoutines::_throw_AbstractMethodError_entry =
5810       generate_throw_exception("AbstractMethodError throw_exception",
5811                                CAST_FROM_FN_PTR(address,
5812                                                 SharedRuntime::
5813                                                 throw_AbstractMethodError));
5814 
5815     StubRoutines::_throw_IncompatibleClassChangeError_entry =
5816       generate_throw_exception("IncompatibleClassChangeError throw_exception",
5817                                CAST_FROM_FN_PTR(address,
5818                                                 SharedRuntime::
5819                                                 throw_IncompatibleClassChangeError));
5820 
5821     StubRoutines::_throw_NullPointerException_at_call_entry =
5822       generate_throw_exception("NullPointerException at call throw_exception",
5823                                CAST_FROM_FN_PTR(address,
5824                                                 SharedRuntime::
5825                                                 throw_NullPointerException_at_call));
5826 
5827     // entry points that are platform specific
5828     StubRoutines::x86::_f2i_fixup = generate_f2i_fixup();
5829     StubRoutines::x86::_f2l_fixup = generate_f2l_fixup();
5830     StubRoutines::x86::_d2i_fixup = generate_d2i_fixup();
5831     StubRoutines::x86::_d2l_fixup = generate_d2l_fixup();
5832 
5833     StubRoutines::x86::_float_sign_mask  = generate_fp_mask("float_sign_mask",  0x7FFFFFFF7FFFFFFF);
5834     StubRoutines::x86::_float_sign_flip  = generate_fp_mask("float_sign_flip",  0x8000000080000000);
5835     StubRoutines::x86::_double_sign_mask = generate_fp_mask("double_sign_mask", 0x7FFFFFFFFFFFFFFF);
5836     StubRoutines::x86::_double_sign_flip = generate_fp_mask("double_sign_flip", 0x8000000000000000);
5837 
5838     // support for verify_oop (must happen after universe_init)
5839     StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop();
5840 
5841     // arraycopy stubs used by compilers
5842     generate_arraycopy_stubs();
5843 
5844     // don't bother generating these AES intrinsic stubs unless global flag is set
5845     if (UseAESIntrinsics) {
5846       StubRoutines::x86::_key_shuffle_mask_addr = generate_key_shuffle_mask();  // needed by the others
5847       StubRoutines::_aescrypt_encryptBlock = generate_aescrypt_encryptBlock();
5848       StubRoutines::_aescrypt_decryptBlock = generate_aescrypt_decryptBlock();
5849       StubRoutines::_cipherBlockChaining_encryptAESCrypt = generate_cipherBlockChaining_encryptAESCrypt();
5850       if (VM_Version::supports_vaes() &&  VM_Version::supports_avx512vl() && VM_Version::supports_avx512dq() ) {
5851         StubRoutines::_cipherBlockChaining_decryptAESCrypt = generate_cipherBlockChaining_decryptVectorAESCrypt();
5852       } else {
5853         StubRoutines::_cipherBlockChaining_decryptAESCrypt = generate_cipherBlockChaining_decryptAESCrypt_Parallel();
5854       }
5855     }
5856     if (UseAESCTRIntrinsics){
5857       StubRoutines::x86::_counter_shuffle_mask_addr = generate_counter_shuffle_mask();
5858       StubRoutines::_counterMode_AESCrypt = generate_counterMode_AESCrypt_Parallel();
5859     }
5860 
5861     if (UseSHA1Intrinsics) {
5862       StubRoutines::x86::_upper_word_mask_addr = generate_upper_word_mask();
5863       StubRoutines::x86::_shuffle_byte_flip_mask_addr = generate_shuffle_byte_flip_mask();
5864       StubRoutines::_sha1_implCompress = generate_sha1_implCompress(false, "sha1_implCompress");
5865       StubRoutines::_sha1_implCompressMB = generate_sha1_implCompress(true, "sha1_implCompressMB");
5866     }
5867     if (UseSHA256Intrinsics) {
5868       StubRoutines::x86::_k256_adr = (address)StubRoutines::x86::_k256;
5869       char* dst = (char*)StubRoutines::x86::_k256_W;
5870       char* src = (char*)StubRoutines::x86::_k256;
5871       for (int ii = 0; ii < 16; ++ii) {
5872         memcpy(dst + 32 * ii,      src + 16 * ii, 16);
5873         memcpy(dst + 32 * ii + 16, src + 16 * ii, 16);
5874       }
5875       StubRoutines::x86::_k256_W_adr = (address)StubRoutines::x86::_k256_W;
5876       StubRoutines::x86::_pshuffle_byte_flip_mask_addr = generate_pshuffle_byte_flip_mask();
5877       StubRoutines::_sha256_implCompress = generate_sha256_implCompress(false, "sha256_implCompress");
5878       StubRoutines::_sha256_implCompressMB = generate_sha256_implCompress(true, "sha256_implCompressMB");
5879     }
5880     if (UseSHA512Intrinsics) {
5881       StubRoutines::x86::_k512_W_addr = (address)StubRoutines::x86::_k512_W;
5882       StubRoutines::x86::_pshuffle_byte_flip_mask_addr_sha512 = generate_pshuffle_byte_flip_mask_sha512();
5883       StubRoutines::_sha512_implCompress = generate_sha512_implCompress(false, "sha512_implCompress");
5884       StubRoutines::_sha512_implCompressMB = generate_sha512_implCompress(true, "sha512_implCompressMB");
5885     }
5886 
5887     // Generate GHASH intrinsics code
5888     if (UseGHASHIntrinsics) {
5889       StubRoutines::x86::_ghash_long_swap_mask_addr = generate_ghash_long_swap_mask();
5890       StubRoutines::x86::_ghash_byte_swap_mask_addr = generate_ghash_byte_swap_mask();





5891       StubRoutines::_ghash_processBlocks = generate_ghash_processBlocks();
5892     }

5893 
5894     if (UseBASE64Intrinsics) {
5895       StubRoutines::x86::_and_mask = base64_and_mask_addr();
5896       StubRoutines::x86::_bswap_mask = base64_bswap_mask_addr();
5897       StubRoutines::x86::_base64_charset = base64_charset_addr();
5898       StubRoutines::x86::_url_charset = base64url_charset_addr();
5899       StubRoutines::x86::_gather_mask = base64_gather_mask_addr();
5900       StubRoutines::x86::_left_shift_mask = base64_left_shift_mask_addr();
5901       StubRoutines::x86::_right_shift_mask = base64_right_shift_mask_addr();
5902       StubRoutines::_base64_encodeBlock = generate_base64_encodeBlock();
5903     }
5904 
5905     // Safefetch stubs.
5906     generate_safefetch("SafeFetch32", sizeof(int),     &StubRoutines::_safefetch32_entry,
5907                                                        &StubRoutines::_safefetch32_fault_pc,
5908                                                        &StubRoutines::_safefetch32_continuation_pc);
5909     generate_safefetch("SafeFetchN", sizeof(intptr_t), &StubRoutines::_safefetchN_entry,
5910                                                        &StubRoutines::_safefetchN_fault_pc,
5911                                                        &StubRoutines::_safefetchN_continuation_pc);
5912 
5913     BarrierSetNMethod* bs_nm = BarrierSet::barrier_set()->barrier_set_nmethod();
5914     if (bs_nm != NULL) {
5915       StubRoutines::x86::_method_entry_barrier = generate_method_entry_barrier();
5916     }
5917 #ifdef COMPILER2
5918     if (UseMultiplyToLenIntrinsic) {
5919       StubRoutines::_multiplyToLen = generate_multiplyToLen();
5920     }
5921     if (UseSquareToLenIntrinsic) {
5922       StubRoutines::_squareToLen = generate_squareToLen();
5923     }
5924     if (UseMulAddIntrinsic) {
5925       StubRoutines::_mulAdd = generate_mulAdd();
5926     }
5927 #ifndef _WINDOWS
5928     if (UseMontgomeryMultiplyIntrinsic) {
5929       StubRoutines::_montgomeryMultiply
5930         = CAST_FROM_FN_PTR(address, SharedRuntime::montgomery_multiply);
5931     }
5932     if (UseMontgomerySquareIntrinsic) {
5933       StubRoutines::_montgomerySquare
5934         = CAST_FROM_FN_PTR(address, SharedRuntime::montgomery_square);
5935     }
5936 #endif // WINDOWS
5937 #endif // COMPILER2
5938 
5939     if (UseVectorizedMismatchIntrinsic) {
5940       StubRoutines::_vectorizedMismatch = generate_vectorizedMismatch();
5941     }
5942   }
5943 
5944  public:
5945   StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) {
5946     if (all) {
5947       generate_all();
5948     } else {
5949       generate_initial();
5950     }
5951   }
5952 }; // end class declaration
5953 
5954 void StubGenerator_generate(CodeBuffer* code, bool all) {
5955   StubGenerator g(code, all);
5956 }
--- EOF ---