1 /*
2 * Copyright (c) 2003, 2026, 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 "asm/macroAssembler.hpp"
26 #include "classfile/javaClasses.hpp"
27 #include "classfile/vmIntrinsics.hpp"
28 #include "compiler/oopMap.hpp"
29 #include "gc/shared/barrierSet.hpp"
30 #include "gc/shared/barrierSetAssembler.hpp"
31 #include "gc/shared/barrierSetNMethod.hpp"
32 #include "gc/shared/gc_globals.hpp"
33 #include "memory/universe.hpp"
34 #include "prims/jvmtiExport.hpp"
35 #include "prims/upcallLinker.hpp"
36 #include "runtime/arguments.hpp"
37 #include "runtime/continuationEntry.hpp"
38 #include "runtime/javaThread.hpp"
39 #include "runtime/sharedRuntime.hpp"
40 #include "runtime/stubRoutines.hpp"
41 #include "stubGenerator_x86_64.hpp"
42 #ifdef COMPILER2
43 #include "opto/runtime.hpp"
44 #include "opto/c2_globals.hpp"
45 #endif
46
47 // For a more detailed description of the stub routine structure
48 // see the comment in stubRoutines.hpp
49
50 #define __ _masm->
51 #define TIMES_OOP (UseCompressedOops ? Address::times_4 : Address::times_8)
52
53 #ifdef PRODUCT
54 #define BLOCK_COMMENT(str) /* nothing */
55 #else
56 #define BLOCK_COMMENT(str) __ block_comment(str)
57 #endif // PRODUCT
58
59 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
60
61 //
62 // Linux Arguments:
63 // c_rarg0: call wrapper address address
64 // c_rarg1: result address
65 // c_rarg2: result type BasicType
66 // c_rarg3: method Method*
67 // c_rarg4: (interpreter) entry point address
68 // c_rarg5: parameters intptr_t*
69 // 16(rbp): parameter size (in words) int
70 // 24(rbp): thread Thread*
71 //
72 // [ return_from_Java ] <--- rsp
73 // [ argument word n ]
74 // ...
75 // -12 [ argument word 1 ]
76 // -11 [ saved r15 ] <--- rsp_after_call
77 // -10 [ saved r14 ]
78 // -9 [ saved r13 ]
79 // -8 [ saved r12 ]
80 // -7 [ saved rbx ]
81 // -6 [ call wrapper ]
82 // -5 [ result ]
83 // -4 [ result type ]
84 // -3 [ method ]
85 // -2 [ entry point ]
86 // -1 [ parameters ]
87 // 0 [ saved rbp ] <--- rbp
88 // 1 [ return address ]
89 // 2 [ parameter size ]
90 // 3 [ thread ]
91 //
92 // Windows Arguments:
93 // c_rarg0: call wrapper address address
94 // c_rarg1: result address
95 // c_rarg2: result type BasicType
96 // c_rarg3: method Method*
97 // 48(rbp): (interpreter) entry point address
98 // 56(rbp): parameters intptr_t*
99 // 64(rbp): parameter size (in words) int
100 // 72(rbp): thread Thread*
101 //
102 // [ return_from_Java ] <--- rsp
103 // [ argument word n ]
104 // ...
105 // -28 [ argument word 1 ]
106 // -27 [ saved xmm15 ] <--- rsp after_call
107 // [ saved xmm7-xmm14 ]
108 // -9 [ saved xmm6 ] (each xmm register takes 2 slots)
109 // -7 [ saved r15 ]
110 // -6 [ saved r14 ]
111 // -5 [ saved r13 ]
112 // -4 [ saved r12 ]
113 // -3 [ saved rdi ]
114 // -2 [ saved rsi ]
115 // -1 [ saved rbx ]
116 // 0 [ saved rbp ] <--- rbp
117 // 1 [ return address ]
118 // 2 [ call wrapper ]
119 // 3 [ result ]
120 // 4 [ result type ]
121 // 5 [ method ]
122 // 6 [ entry point ]
123 // 7 [ parameters ]
124 // 8 [ parameter size ]
125 // 9 [ thread ]
126 //
127 // Windows reserves the callers stack space for arguments 1-4.
128 // We spill c_rarg0-c_rarg3 to this space.
129
130 // Call stub stack layout word offsets from rbp
131 #ifdef _WIN64
132 enum call_stub_layout {
133 xmm_save_first = 6, // save from xmm6
134 xmm_save_last = 15, // to xmm15
135 xmm_save_base = -9,
136 rsp_after_call_off = xmm_save_base - 2 * (xmm_save_last - xmm_save_first), // -27
137 r15_off = -7,
138 r14_off = -6,
139 r13_off = -5,
140 r12_off = -4,
141 rdi_off = -3,
142 rsi_off = -2,
143 rbx_off = -1,
144 rbp_off = 0,
145 retaddr_off = 1,
146 call_wrapper_off = 2,
147 result_off = 3,
148 result_type_off = 4,
149 method_off = 5,
150 entry_point_off = 6,
151 parameters_off = 7,
152 parameter_size_off = 8,
153 thread_off = 9
154 };
155
156 static Address xmm_save(int reg) {
157 assert(reg >= xmm_save_first && reg <= xmm_save_last, "XMM register number out of range");
158 return Address(rbp, (xmm_save_base - (reg - xmm_save_first) * 2) * wordSize);
159 }
160 #else // !_WIN64
161 enum call_stub_layout {
162 rsp_after_call_off = -12,
163 mxcsr_off = rsp_after_call_off,
164 r15_off = -11,
165 r14_off = -10,
166 r13_off = -9,
167 r12_off = -8,
168 rbx_off = -7,
169 call_wrapper_off = -6,
170 result_off = -5,
171 result_type_off = -4,
172 method_off = -3,
173 entry_point_off = -2,
174 parameters_off = -1,
175 rbp_off = 0,
176 retaddr_off = 1,
177 parameter_size_off = 2,
178 thread_off = 3
179 };
180 #endif // _WIN64
181
182 address StubGenerator::generate_call_stub(address& return_address) {
183
184 assert((int)frame::entry_frame_after_call_words == -(int)rsp_after_call_off + 1 &&
185 (int)frame::entry_frame_call_wrapper_offset == (int)call_wrapper_off,
186 "adjust this code");
187 StubId stub_id = StubId::stubgen_call_stub_id;
188 GrowableArray<address> entries;
189 int entry_count = StubInfo::entry_count(stub_id);
190 assert(entry_count == 2, "sanity check");
191 address start = load_archive_data(stub_id, &entries);
192 if (start != nullptr) {
193 assert(entries.length() == 1, "expected 1 extra entry");
194 return_address = entries.at(0);
195 return start;
196 }
197
198 StubCodeMark mark(this, stub_id);
199 start = __ pc();
200
201 // same as in generate_catch_exception()!
202 const Address rsp_after_call(rbp, rsp_after_call_off * wordSize);
203
204 const Address call_wrapper (rbp, call_wrapper_off * wordSize);
205 const Address result (rbp, result_off * wordSize);
206 const Address result_type (rbp, result_type_off * wordSize);
207 const Address method (rbp, method_off * wordSize);
208 const Address entry_point (rbp, entry_point_off * wordSize);
209 const Address parameters (rbp, parameters_off * wordSize);
210 const Address parameter_size(rbp, parameter_size_off * wordSize);
211
212 // same as in generate_catch_exception()!
213 const Address thread (rbp, thread_off * wordSize);
214
215 const Address r15_save(rbp, r15_off * wordSize);
216 const Address r14_save(rbp, r14_off * wordSize);
217 const Address r13_save(rbp, r13_off * wordSize);
218 const Address r12_save(rbp, r12_off * wordSize);
219 const Address rbx_save(rbp, rbx_off * wordSize);
220
221 // stub code
222 __ enter();
223 __ subptr(rsp, -rsp_after_call_off * wordSize);
224
225 // save register parameters
226 #ifndef _WIN64
227 __ movptr(parameters, c_rarg5); // parameters
228 __ movptr(entry_point, c_rarg4); // entry_point
229 #endif
230
231 __ movptr(method, c_rarg3); // method
232 __ movl(result_type, c_rarg2); // result type
233 __ movptr(result, c_rarg1); // result
234 __ movptr(call_wrapper, c_rarg0); // call wrapper
235
236 // save regs belonging to calling function
237 __ movptr(rbx_save, rbx);
238 __ movptr(r12_save, r12);
239 __ movptr(r13_save, r13);
240 __ movptr(r14_save, r14);
241 __ movptr(r15_save, r15);
242
243 #ifdef _WIN64
244 int last_reg = 15;
245 for (int i = xmm_save_first; i <= last_reg; i++) {
246 __ movdqu(xmm_save(i), as_XMMRegister(i));
247 }
248
249 const Address rdi_save(rbp, rdi_off * wordSize);
250 const Address rsi_save(rbp, rsi_off * wordSize);
251
252 __ movptr(rsi_save, rsi);
253 __ movptr(rdi_save, rdi);
254 #else
255 const Address mxcsr_save(rbp, mxcsr_off * wordSize);
256 {
257 Label skip_ldmx;
258 __ cmp32_mxcsr_std(mxcsr_save, rax, rscratch1);
259 __ jcc(Assembler::equal, skip_ldmx);
260 ExternalAddress mxcsr_std(StubRoutines::x86::addr_mxcsr_std());
261 __ ldmxcsr(mxcsr_std, rscratch1);
262 __ bind(skip_ldmx);
263 }
264 #endif
265
266 // Load up thread register
267 __ movptr(r15_thread, thread);
268 __ reinit_heapbase();
269
270 #ifdef ASSERT
271 // make sure we have no pending exceptions
272 {
273 Label L;
274 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), NULL_WORD);
275 __ jcc(Assembler::equal, L);
276 __ stop("StubRoutines::call_stub: entered with pending exception");
277 __ bind(L);
278 }
279 #endif
280
281 // pass parameters if any
282 BLOCK_COMMENT("pass parameters if any");
283 Label parameters_done;
284 __ movl(c_rarg3, parameter_size);
285 __ testl(c_rarg3, c_rarg3);
286 __ jcc(Assembler::zero, parameters_done);
287
288 Label loop;
289 __ movptr(c_rarg2, parameters); // parameter pointer
290 __ movl(c_rarg1, c_rarg3); // parameter counter is in c_rarg1
291 __ BIND(loop);
292 __ movptr(rax, Address(c_rarg2, 0));// get parameter
293 __ addptr(c_rarg2, wordSize); // advance to next parameter
294 __ decrementl(c_rarg1); // decrement counter
295 __ push(rax); // pass parameter
296 __ jcc(Assembler::notZero, loop);
297
298 // call Java function
299 __ BIND(parameters_done);
300 __ movptr(rbx, method); // get Method*
301 __ movptr(c_rarg1, entry_point); // get entry_point
302 __ mov(r13, rsp); // set sender sp
303 BLOCK_COMMENT("call Java function");
304 __ call(c_rarg1);
305
306 BLOCK_COMMENT("call_stub_return_address:");
307 return_address = __ pc();
308 entries.append(return_address);
309
310 // store result depending on type (everything that is not
311 // T_OBJECT, T_LONG, T_FLOAT or T_DOUBLE is treated as T_INT)
312 __ movptr(c_rarg0, result);
313 Label is_long, is_float, is_double, exit;
314 __ movl(c_rarg1, result_type);
315 __ cmpl(c_rarg1, T_OBJECT);
316 __ jcc(Assembler::equal, is_long);
317 __ cmpl(c_rarg1, T_LONG);
318 __ jcc(Assembler::equal, is_long);
319 __ cmpl(c_rarg1, T_FLOAT);
320 __ jcc(Assembler::equal, is_float);
321 __ cmpl(c_rarg1, T_DOUBLE);
322 __ jcc(Assembler::equal, is_double);
323 #ifdef ASSERT
324 // make sure the type is INT
325 {
326 Label L;
327 __ cmpl(c_rarg1, T_INT);
328 __ jcc(Assembler::equal, L);
329 __ stop("StubRoutines::call_stub: unexpected result type");
330 __ bind(L);
331 }
332 #endif
333
334 // handle T_INT case
335 __ movl(Address(c_rarg0, 0), rax);
336
337 __ BIND(exit);
338
339 // pop parameters
340 __ lea(rsp, rsp_after_call);
341
342 #ifdef ASSERT
343 // verify that threads correspond
344 {
345 Label L1, L2, L3;
346 __ cmpptr(r15_thread, thread);
347 __ jcc(Assembler::equal, L1);
348 __ stop("StubRoutines::call_stub: r15_thread is corrupted");
349 __ bind(L1);
350 __ get_thread_slow(rbx);
351 __ cmpptr(r15_thread, thread);
352 __ jcc(Assembler::equal, L2);
353 __ stop("StubRoutines::call_stub: r15_thread is modified by call");
354 __ bind(L2);
355 __ cmpptr(r15_thread, rbx);
356 __ jcc(Assembler::equal, L3);
357 __ stop("StubRoutines::call_stub: threads must correspond");
358 __ bind(L3);
359 }
360 #endif
361
362 __ pop_cont_fastpath();
363
364 // restore regs belonging to calling function
365 #ifdef _WIN64
366 // emit the restores for xmm regs
367 for (int i = xmm_save_first; i <= last_reg; i++) {
368 __ movdqu(as_XMMRegister(i), xmm_save(i));
369 }
370 #endif
371 __ movptr(r15, r15_save);
372 __ movptr(r14, r14_save);
373 __ movptr(r13, r13_save);
374 __ movptr(r12, r12_save);
375 __ movptr(rbx, rbx_save);
376
377 #ifdef _WIN64
378 __ movptr(rdi, rdi_save);
379 __ movptr(rsi, rsi_save);
380 #else
381 __ ldmxcsr(mxcsr_save);
382 #endif
383
384 // restore rsp
385 __ addptr(rsp, -rsp_after_call_off * wordSize);
386
387 // return
388 __ vzeroupper();
389 __ pop(rbp);
390 __ ret(0);
391
392 // handle return types different from T_INT
393 __ BIND(is_long);
394 __ movq(Address(c_rarg0, 0), rax);
395 __ jmp(exit);
396
397 __ BIND(is_float);
398 __ movflt(Address(c_rarg0, 0), xmm0);
399 __ jmp(exit);
400
401 __ BIND(is_double);
402 __ movdbl(Address(c_rarg0, 0), xmm0);
403 __ jmp(exit);
404
405 // record the stub entry and end plus the auxiliary entry
406 store_archive_data(stub_id, start, __ pc(), &entries);
407
408 return start;
409 }
410
411 // Return point for a Java call if there's an exception thrown in
412 // Java code. The exception is caught and transformed into a
413 // pending exception stored in JavaThread that can be tested from
414 // within the VM.
415 //
416 // Note: Usually the parameters are removed by the callee. In case
417 // of an exception crossing an activation frame boundary, that is
418 // not the case if the callee is compiled code => need to setup the
419 // rsp.
420 //
421 // rax: exception oop
422
423 address StubGenerator::generate_catch_exception() {
424 StubId stub_id = StubId::stubgen_catch_exception_id;
425 int entry_count = StubInfo::entry_count(stub_id);
426 assert(entry_count == 1, "sanity check");
427 address start = load_archive_data(stub_id);
428 if (start != nullptr) {
429 return start;
430 }
431
432 StubCodeMark mark(this, stub_id);
433 start = __ pc();
434
435 // same as in generate_call_stub():
436 const Address rsp_after_call(rbp, rsp_after_call_off * wordSize);
437 const Address thread (rbp, thread_off * wordSize);
438
439 #ifdef ASSERT
440 // verify that threads correspond
441 {
442 Label L1, L2, L3;
443 __ cmpptr(r15_thread, thread);
444 __ jcc(Assembler::equal, L1);
445 __ stop("StubRoutines::catch_exception: r15_thread is corrupted");
446 __ bind(L1);
447 __ get_thread_slow(rbx);
448 __ cmpptr(r15_thread, thread);
449 __ jcc(Assembler::equal, L2);
450 __ stop("StubRoutines::catch_exception: r15_thread is modified by call");
451 __ bind(L2);
452 __ cmpptr(r15_thread, rbx);
453 __ jcc(Assembler::equal, L3);
454 __ stop("StubRoutines::catch_exception: threads must correspond");
455 __ bind(L3);
456 }
457 #endif
458
459 // set pending exception
460 __ verify_oop(rax);
461
462 __ movptr(Address(r15_thread, Thread::pending_exception_offset()), rax);
463 // special case -- add file name string to AOT address table
464 address file = (address)AOTCodeCache::add_C_string(__FILE__);
465 __ lea(rscratch1, ExternalAddress(file));
466 __ movptr(Address(r15_thread, Thread::exception_file_offset()), rscratch1);
467 __ movl(Address(r15_thread, Thread::exception_line_offset()), (int) __LINE__);
468
469 // complete return to VM
470 assert(StubRoutines::_call_stub_return_address != nullptr,
471 "_call_stub_return_address must have been generated before");
472 __ jump(RuntimeAddress(StubRoutines::_call_stub_return_address));
473
474 // record the stub entry and end
475 store_archive_data(stub_id, start, __ pc());
476
477 return start;
478 }
479
480 // Continuation point for runtime calls returning with a pending
481 // exception. The pending exception check happened in the runtime
482 // or native call stub. The pending exception in Thread is
483 // converted into a Java-level exception.
484 //
485 // Contract with Java-level exception handlers:
486 // rax: exception
487 // rdx: throwing pc
488 //
489 // NOTE: At entry of this stub, exception-pc must be on stack !!
490
491 address StubGenerator::generate_forward_exception() {
492 StubId stub_id = StubId::stubgen_forward_exception_id;
493 int entry_count = StubInfo::entry_count(stub_id);
494 assert(entry_count == 1, "sanity check");
495 address start = load_archive_data(stub_id);
496 if (start != nullptr) {
497 return start;
498 }
499 StubCodeMark mark(this, stub_id);
500 start = __ pc();
501
502 // Upon entry, the sp points to the return address returning into
503 // Java (interpreted or compiled) code; i.e., the return address
504 // becomes the throwing pc.
505 //
506 // Arguments pushed before the runtime call are still on the stack
507 // but the exception handler will reset the stack pointer ->
508 // ignore them. A potential result in registers can be ignored as
509 // well.
510
511 #ifdef ASSERT
512 // make sure this code is only executed if there is a pending exception
513 {
514 Label L;
515 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), NULL_WORD);
516 __ jcc(Assembler::notEqual, L);
517 __ stop("StubRoutines::forward exception: no pending exception (1)");
518 __ bind(L);
519 }
520 #endif
521
522 // compute exception handler into rbx
523 __ movptr(c_rarg0, Address(rsp, 0));
524 BLOCK_COMMENT("call exception_handler_for_return_address");
525 __ call_VM_leaf(CAST_FROM_FN_PTR(address,
526 SharedRuntime::exception_handler_for_return_address),
527 r15_thread, c_rarg0);
528 __ mov(rbx, rax);
529
530 // setup rax & rdx, remove return address & clear pending exception
531 __ pop(rdx);
532 __ movptr(rax, Address(r15_thread, Thread::pending_exception_offset()));
533 __ movptr(Address(r15_thread, Thread::pending_exception_offset()), NULL_WORD);
534
535 #ifdef ASSERT
536 // make sure exception is set
537 {
538 Label L;
539 __ testptr(rax, rax);
540 __ jcc(Assembler::notEqual, L);
541 __ stop("StubRoutines::forward exception: no pending exception (2)");
542 __ bind(L);
543 }
544 #endif
545
546 // continue at exception handler (return address removed)
547 // rax: exception
548 // rbx: exception handler
549 // rdx: throwing pc
550 __ verify_oop(rax);
551 __ jmp(rbx);
552
553 // record the stub entry and end
554 store_archive_data(stub_id, start, __ pc());
555
556 return start;
557 }
558
559 // Support for intptr_t OrderAccess::fence()
560 //
561 // Arguments :
562 //
563 // Result:
564 address StubGenerator::generate_orderaccess_fence() {
565 StubId stub_id = StubId::stubgen_fence_id;
566 int entry_count = StubInfo::entry_count(stub_id);
567 assert(entry_count == 1, "sanity check");
568 address start = load_archive_data(stub_id);
569 if (start != nullptr) {
570 return start;
571 }
572 StubCodeMark mark(this, stub_id);
573 start = __ pc();
574
575 __ membar(Assembler::StoreLoad);
576 __ ret(0);
577
578 // record the stub entry and end
579 store_archive_data(stub_id, start, __ pc());
580
581 return start;
582 }
583
584
585 //----------------------------------------------------------------------------------------------------
586 // Support for void verify_mxcsr()
587 //
588 // This routine is used with -Xcheck:jni to verify that native
589 // JNI code does not return to Java code without restoring the
590 // MXCSR register to our expected state.
591
592 address StubGenerator::generate_verify_mxcsr() {
593 StubId stub_id = StubId::stubgen_verify_mxcsr_id;
594 int entry_count = StubInfo::entry_count(stub_id);
595 assert(entry_count == 1, "sanity check");
596 address start = load_archive_data(stub_id);
597 if (start != nullptr) {
598 return start;
599 }
600 StubCodeMark mark(this, stub_id);
601 start = __ pc();
602
603 const Address mxcsr_save(rsp, 0);
604
605 if (CheckJNICalls) {
606 Label ok_ret;
607 ExternalAddress mxcsr_std(StubRoutines::x86::addr_mxcsr_std());
608 __ push_ppx(rax);
609 __ subptr(rsp, wordSize); // allocate a temp location
610 __ cmp32_mxcsr_std(mxcsr_save, rax, rscratch1);
611 __ jcc(Assembler::equal, ok_ret);
612
613 __ warn("MXCSR changed by native JNI code, use -XX:+RestoreMXCSROnJNICall");
614
615 __ ldmxcsr(mxcsr_std, rscratch1);
616
617 __ bind(ok_ret);
618 __ addptr(rsp, wordSize);
619 __ pop_ppx(rax);
620 }
621
622 __ ret(0);
623
624 // record the stub entry and end
625 store_archive_data(stub_id, start, __ pc());
626
627 return start;
628 }
629
630 address StubGenerator::generate_f2i_fixup() {
631 StubId stub_id = StubId::stubgen_f2i_fixup_id;
632 int entry_count = StubInfo::entry_count(stub_id);
633 assert(entry_count == 1, "sanity check");
634 address start = load_archive_data(stub_id);
635 if (start != nullptr) {
636 return start;
637 }
638 StubCodeMark mark(this, stub_id);
639 Address inout(rsp, 5 * wordSize); // return address + 4 saves
640
641 start = __ pc();
642
643 Label L;
644
645 __ push_ppx(rax);
646 __ push_ppx(c_rarg3);
647 __ push_ppx(c_rarg2);
648 __ push_ppx(c_rarg1);
649
650 __ movl(rax, 0x7f800000);
651 __ xorl(c_rarg3, c_rarg3);
652 __ movl(c_rarg2, inout);
653 __ movl(c_rarg1, c_rarg2);
654 __ andl(c_rarg1, 0x7fffffff);
655 __ cmpl(rax, c_rarg1); // NaN? -> 0
656 __ jcc(Assembler::negative, L);
657 __ testl(c_rarg2, c_rarg2); // signed ? min_jint : max_jint
658 __ movl(c_rarg3, 0x80000000);
659 __ movl(rax, 0x7fffffff);
660 __ cmovl(Assembler::positive, c_rarg3, rax);
661
662 __ bind(L);
663 __ movptr(inout, c_rarg3);
664
665 __ pop_ppx(c_rarg1);
666 __ pop_ppx(c_rarg2);
667 __ pop_ppx(c_rarg3);
668 __ pop_ppx(rax);
669
670 __ ret(0);
671
672 // record the stub entry and end
673 store_archive_data(stub_id, start, __ pc());
674
675 return start;
676 }
677
678 address StubGenerator::generate_f2l_fixup() {
679 StubId stub_id = StubId::stubgen_f2l_fixup_id;
680 int entry_count = StubInfo::entry_count(stub_id);
681 assert(entry_count == 1, "sanity check");
682 address start = load_archive_data(stub_id);
683 if (start != nullptr) {
684 return start;
685 }
686 StubCodeMark mark(this, stub_id);
687 Address inout(rsp, 5 * wordSize); // return address + 4 saves
688 start = __ pc();
689
690 Label L;
691
692 __ push_ppx(rax);
693 __ push_ppx(c_rarg3);
694 __ push_ppx(c_rarg2);
695 __ push_ppx(c_rarg1);
696
697 __ movl(rax, 0x7f800000);
698 __ xorl(c_rarg3, c_rarg3);
699 __ movl(c_rarg2, inout);
700 __ movl(c_rarg1, c_rarg2);
701 __ andl(c_rarg1, 0x7fffffff);
702 __ cmpl(rax, c_rarg1); // NaN? -> 0
703 __ jcc(Assembler::negative, L);
704 __ testl(c_rarg2, c_rarg2); // signed ? min_jlong : max_jlong
705 __ mov64(c_rarg3, 0x8000000000000000);
706 __ mov64(rax, 0x7fffffffffffffff);
707 __ cmov(Assembler::positive, c_rarg3, rax);
708
709 __ bind(L);
710 __ movptr(inout, c_rarg3);
711
712 __ pop_ppx(c_rarg1);
713 __ pop_ppx(c_rarg2);
714 __ pop_ppx(c_rarg3);
715 __ pop_ppx(rax);
716
717 __ ret(0);
718
719 // record the stub entry and end
720 store_archive_data(stub_id, start, __ pc());
721
722 return start;
723 }
724
725 address StubGenerator::generate_d2i_fixup() {
726 StubId stub_id = StubId::stubgen_d2i_fixup_id;
727 int entry_count = StubInfo::entry_count(stub_id);
728 assert(entry_count == 1, "sanity check");
729 address start = load_archive_data(stub_id);
730 if (start != nullptr) {
731 return start;
732 }
733 StubCodeMark mark(this, stub_id);
734 Address inout(rsp, 6 * wordSize); // return address + 5 saves
735
736 start = __ pc();
737
738 Label L;
739
740 __ push_ppx(rax);
741 __ push_ppx(c_rarg3);
742 __ push_ppx(c_rarg2);
743 __ push_ppx(c_rarg1);
744 __ push_ppx(c_rarg0);
745
746 __ movl(rax, 0x7ff00000);
747 __ movq(c_rarg2, inout);
748 __ movl(c_rarg3, c_rarg2);
749 __ mov(c_rarg1, c_rarg2);
750 __ mov(c_rarg0, c_rarg2);
751 __ negl(c_rarg3);
752 __ shrptr(c_rarg1, 0x20);
753 __ orl(c_rarg3, c_rarg2);
754 __ andl(c_rarg1, 0x7fffffff);
755 __ xorl(c_rarg2, c_rarg2);
756 __ shrl(c_rarg3, 0x1f);
757 __ orl(c_rarg1, c_rarg3);
758 __ cmpl(rax, c_rarg1);
759 __ jcc(Assembler::negative, L); // NaN -> 0
760 __ testptr(c_rarg0, c_rarg0); // signed ? min_jint : max_jint
761 __ movl(c_rarg2, 0x80000000);
762 __ movl(rax, 0x7fffffff);
763 __ cmov(Assembler::positive, c_rarg2, rax);
764
765 __ bind(L);
766 __ movptr(inout, c_rarg2);
767
768 __ pop_ppx(c_rarg0);
769 __ pop_ppx(c_rarg1);
770 __ pop_ppx(c_rarg2);
771 __ pop_ppx(c_rarg3);
772 __ pop_ppx(rax);
773
774 __ ret(0);
775
776 // record the stub entry and end
777 store_archive_data(stub_id, start, __ pc());
778
779 return start;
780 }
781
782 address StubGenerator::generate_d2l_fixup() {
783 StubId stub_id = StubId::stubgen_d2l_fixup_id;
784 int entry_count = StubInfo::entry_count(stub_id);
785 assert(entry_count == 1, "sanity check");
786 address start = load_archive_data(stub_id);
787 if (start != nullptr) {
788 return start;
789 }
790 StubCodeMark mark(this, stub_id);
791 Address inout(rsp, 6 * wordSize); // return address + 5 saves
792
793 start = __ pc();
794
795 Label L;
796
797 __ push_ppx(rax);
798 __ push_ppx(c_rarg3);
799 __ push_ppx(c_rarg2);
800 __ push_ppx(c_rarg1);
801 __ push_ppx(c_rarg0);
802
803 __ movl(rax, 0x7ff00000);
804 __ movq(c_rarg2, inout);
805 __ movl(c_rarg3, c_rarg2);
806 __ mov(c_rarg1, c_rarg2);
807 __ mov(c_rarg0, c_rarg2);
808 __ negl(c_rarg3);
809 __ shrptr(c_rarg1, 0x20);
810 __ orl(c_rarg3, c_rarg2);
811 __ andl(c_rarg1, 0x7fffffff);
812 __ xorl(c_rarg2, c_rarg2);
813 __ shrl(c_rarg3, 0x1f);
814 __ orl(c_rarg1, c_rarg3);
815 __ cmpl(rax, c_rarg1);
816 __ jcc(Assembler::negative, L); // NaN -> 0
817 __ testq(c_rarg0, c_rarg0); // signed ? min_jlong : max_jlong
818 __ mov64(c_rarg2, 0x8000000000000000);
819 __ mov64(rax, 0x7fffffffffffffff);
820 __ cmovq(Assembler::positive, c_rarg2, rax);
821
822 __ bind(L);
823 __ movq(inout, c_rarg2);
824
825 __ pop_ppx(c_rarg0);
826 __ pop_ppx(c_rarg1);
827 __ pop_ppx(c_rarg2);
828 __ pop_ppx(c_rarg3);
829 __ pop_ppx(rax);
830
831 __ ret(0);
832
833 // record the stub entry and end
834 store_archive_data(stub_id, start, __ pc());
835
836 return start;
837 }
838
839 address StubGenerator::generate_count_leading_zeros_lut() {
840 StubId stub_id = StubId::stubgen_vector_count_leading_zeros_lut_id;
841 int entry_count = StubInfo::entry_count(stub_id);
842 assert(entry_count == 1, "sanity check");
843 address start = load_archive_data(stub_id);
844 if (start != nullptr) {
845 return start;
846 }
847 __ align64();
848 StubCodeMark mark(this, stub_id);
849 start = __ pc();
850
851 __ emit_data64(0x0101010102020304, relocInfo::none);
852 __ emit_data64(0x0000000000000000, relocInfo::none);
853 __ emit_data64(0x0101010102020304, relocInfo::none);
854 __ emit_data64(0x0000000000000000, relocInfo::none);
855 __ emit_data64(0x0101010102020304, relocInfo::none);
856 __ emit_data64(0x0000000000000000, relocInfo::none);
857 __ emit_data64(0x0101010102020304, relocInfo::none);
858 __ emit_data64(0x0000000000000000, relocInfo::none);
859
860 // record the stub entry and end
861 store_archive_data(stub_id, start, __ pc());
862
863 return start;
864 }
865
866 address StubGenerator::generate_popcount_avx_lut() {
867 StubId stub_id = StubId::stubgen_vector_popcount_lut_id;
868 int entry_count = StubInfo::entry_count(stub_id);
869 assert(entry_count == 1, "sanity check");
870 address start = load_archive_data(stub_id);
871 if (start != nullptr) {
872 return start;
873 }
874 __ align64();
875 StubCodeMark mark(this, stub_id);
876 start = __ pc();
877
878 __ emit_data64(0x0302020102010100, relocInfo::none);
879 __ emit_data64(0x0403030203020201, relocInfo::none);
880 __ emit_data64(0x0302020102010100, relocInfo::none);
881 __ emit_data64(0x0403030203020201, relocInfo::none);
882 __ emit_data64(0x0302020102010100, relocInfo::none);
883 __ emit_data64(0x0403030203020201, relocInfo::none);
884 __ emit_data64(0x0302020102010100, relocInfo::none);
885 __ emit_data64(0x0403030203020201, relocInfo::none);
886
887 // record the stub entry and end
888 store_archive_data(stub_id, start, __ pc());
889
890 return start;
891 }
892
893 void StubGenerator::generate_iota_indices() {
894 StubId stub_id = StubId::stubgen_vector_iota_indices_id;
895 GrowableArray<address> entries;
896 int entry_count = StubInfo::entry_count(stub_id);
897 assert(entry_count == VECTOR_IOTA_COUNT, "sanity check");
898 address start = load_archive_data(stub_id, &entries);
899 if (start != nullptr) {
900 assert(entries.length() == VECTOR_IOTA_COUNT - 1,
901 "unexpected extra entry count %d", entries.length());
902 StubRoutines::x86::_vector_iota_indices[0] = start;
903 for (int i = 1; i < VECTOR_IOTA_COUNT; i++) {
904 StubRoutines::x86::_vector_iota_indices[i] = entries.at(i - 1);
905 }
906 return;
907 }
908 __ align(CodeEntryAlignment);
909 StubCodeMark mark(this, stub_id);
910 start = __ pc();
911 // B
912 __ emit_data64(0x0706050403020100, relocInfo::none);
913 __ emit_data64(0x0F0E0D0C0B0A0908, relocInfo::none);
914 __ emit_data64(0x1716151413121110, relocInfo::none);
915 __ emit_data64(0x1F1E1D1C1B1A1918, relocInfo::none);
916 __ emit_data64(0x2726252423222120, relocInfo::none);
917 __ emit_data64(0x2F2E2D2C2B2A2928, relocInfo::none);
918 __ emit_data64(0x3736353433323130, relocInfo::none);
919 __ emit_data64(0x3F3E3D3C3B3A3938, relocInfo::none);
920 entries.append(__ pc());
921 // W
922 __ emit_data64(0x0003000200010000, relocInfo::none);
923 __ emit_data64(0x0007000600050004, relocInfo::none);
924 __ emit_data64(0x000B000A00090008, relocInfo::none);
925 __ emit_data64(0x000F000E000D000C, relocInfo::none);
926 __ emit_data64(0x0013001200110010, relocInfo::none);
927 __ emit_data64(0x0017001600150014, relocInfo::none);
928 __ emit_data64(0x001B001A00190018, relocInfo::none);
929 __ emit_data64(0x001F001E001D001C, relocInfo::none);
930 entries.append(__ pc());
931 // D
932 __ emit_data64(0x0000000100000000, relocInfo::none);
933 __ emit_data64(0x0000000300000002, relocInfo::none);
934 __ emit_data64(0x0000000500000004, relocInfo::none);
935 __ emit_data64(0x0000000700000006, relocInfo::none);
936 __ emit_data64(0x0000000900000008, relocInfo::none);
937 __ emit_data64(0x0000000B0000000A, relocInfo::none);
938 __ emit_data64(0x0000000D0000000C, relocInfo::none);
939 __ emit_data64(0x0000000F0000000E, relocInfo::none);
940 entries.append(__ pc());
941 // Q
942 __ emit_data64(0x0000000000000000, relocInfo::none);
943 __ emit_data64(0x0000000000000001, relocInfo::none);
944 __ emit_data64(0x0000000000000002, relocInfo::none);
945 __ emit_data64(0x0000000000000003, relocInfo::none);
946 __ emit_data64(0x0000000000000004, relocInfo::none);
947 __ emit_data64(0x0000000000000005, relocInfo::none);
948 __ emit_data64(0x0000000000000006, relocInfo::none);
949 __ emit_data64(0x0000000000000007, relocInfo::none);
950 entries.append(__ pc());
951 // D - FP
952 __ emit_data64(0x3F80000000000000, relocInfo::none); // 0.0f, 1.0f
953 __ emit_data64(0x4040000040000000, relocInfo::none); // 2.0f, 3.0f
954 __ emit_data64(0x40A0000040800000, relocInfo::none); // 4.0f, 5.0f
955 __ emit_data64(0x40E0000040C00000, relocInfo::none); // 6.0f, 7.0f
956 __ emit_data64(0x4110000041000000, relocInfo::none); // 8.0f, 9.0f
957 __ emit_data64(0x4130000041200000, relocInfo::none); // 10.0f, 11.0f
958 __ emit_data64(0x4150000041400000, relocInfo::none); // 12.0f, 13.0f
959 __ emit_data64(0x4170000041600000, relocInfo::none); // 14.0f, 15.0f
960 entries.append(__ pc());
961 // Q - FP
962 __ emit_data64(0x0000000000000000, relocInfo::none); // 0.0d
963 __ emit_data64(0x3FF0000000000000, relocInfo::none); // 1.0d
964 __ emit_data64(0x4000000000000000, relocInfo::none); // 2.0d
965 __ emit_data64(0x4008000000000000, relocInfo::none); // 3.0d
966 __ emit_data64(0x4010000000000000, relocInfo::none); // 4.0d
967 __ emit_data64(0x4014000000000000, relocInfo::none); // 5.0d
968 __ emit_data64(0x4018000000000000, relocInfo::none); // 6.0d
969 __ emit_data64(0x401c000000000000, relocInfo::none); // 7.0d
970
971 // record the stub entry and end
972 store_archive_data(stub_id, start, __ pc(), &entries);
973
974 // install the entry addresses in the entry array
975 assert(entries.length() == entry_count - 1,
976 "unexpected entries count %d", entries.length());
977 StubRoutines::x86::_vector_iota_indices[0] = start;
978 for (int i = 1; i < VECTOR_IOTA_COUNT; i++) {
979 StubRoutines::x86::_vector_iota_indices[i] = entries.at(i - 1);
980 }
981 }
982
983 address StubGenerator::generate_vector_reverse_bit_lut() {
984 StubId stub_id = StubId::stubgen_vector_reverse_bit_lut_id;
985 int entry_count = StubInfo::entry_count(stub_id);
986 assert(entry_count == 1, "sanity check");
987 address start = load_archive_data(stub_id);
988 if (start != nullptr) {
989 return start;
990 }
991 __ align(CodeEntryAlignment);
992 StubCodeMark mark(this, stub_id);
993 start = __ pc();
994
995 __ emit_data64(0x0E060A020C040800, relocInfo::none);
996 __ emit_data64(0x0F070B030D050901, relocInfo::none);
997 __ emit_data64(0x0E060A020C040800, relocInfo::none);
998 __ emit_data64(0x0F070B030D050901, relocInfo::none);
999 __ emit_data64(0x0E060A020C040800, relocInfo::none);
1000 __ emit_data64(0x0F070B030D050901, relocInfo::none);
1001 __ emit_data64(0x0E060A020C040800, relocInfo::none);
1002 __ emit_data64(0x0F070B030D050901, relocInfo::none);
1003
1004 // record the stub entry and end
1005 store_archive_data(stub_id, start, __ pc());
1006
1007 return start;
1008 }
1009
1010 address StubGenerator::generate_vector_reverse_byte_perm_mask_long() {
1011 StubId stub_id = StubId::stubgen_vector_reverse_byte_perm_mask_long_id;
1012 int entry_count = StubInfo::entry_count(stub_id);
1013 assert(entry_count == 1, "sanity check");
1014 address start = load_archive_data(stub_id);
1015 if (start != nullptr) {
1016 return start;
1017 }
1018 __ align(CodeEntryAlignment);
1019 StubCodeMark mark(this, stub_id);
1020 start = __ pc();
1021
1022 __ emit_data64(0x0001020304050607, relocInfo::none);
1023 __ emit_data64(0x08090A0B0C0D0E0F, relocInfo::none);
1024 __ emit_data64(0x0001020304050607, relocInfo::none);
1025 __ emit_data64(0x08090A0B0C0D0E0F, relocInfo::none);
1026 __ emit_data64(0x0001020304050607, relocInfo::none);
1027 __ emit_data64(0x08090A0B0C0D0E0F, relocInfo::none);
1028 __ emit_data64(0x0001020304050607, relocInfo::none);
1029 __ emit_data64(0x08090A0B0C0D0E0F, relocInfo::none);
1030
1031 // record the stub entry and end
1032 store_archive_data(stub_id, start, __ pc());
1033
1034 return start;
1035 }
1036
1037 address StubGenerator::generate_vector_reverse_byte_perm_mask_int() {
1038 StubId stub_id = StubId::stubgen_vector_reverse_byte_perm_mask_int_id;
1039 int entry_count = StubInfo::entry_count(stub_id);
1040 assert(entry_count == 1, "sanity check");
1041 address start = load_archive_data(stub_id);
1042 if (start != nullptr) {
1043 return start;
1044 }
1045 __ align(CodeEntryAlignment);
1046 StubCodeMark mark(this, stub_id);
1047 start = __ pc();
1048
1049 __ emit_data64(0x0405060700010203, relocInfo::none);
1050 __ emit_data64(0x0C0D0E0F08090A0B, relocInfo::none);
1051 __ emit_data64(0x0405060700010203, relocInfo::none);
1052 __ emit_data64(0x0C0D0E0F08090A0B, relocInfo::none);
1053 __ emit_data64(0x0405060700010203, relocInfo::none);
1054 __ emit_data64(0x0C0D0E0F08090A0B, relocInfo::none);
1055 __ emit_data64(0x0405060700010203, relocInfo::none);
1056 __ emit_data64(0x0C0D0E0F08090A0B, relocInfo::none);
1057
1058 // record the stub entry and end
1059 store_archive_data(stub_id, start, __ pc());
1060
1061 return start;
1062 }
1063
1064 address StubGenerator::generate_vector_reverse_byte_perm_mask_short() {
1065 StubId stub_id = StubId::stubgen_vector_reverse_byte_perm_mask_short_id;
1066 int entry_count = StubInfo::entry_count(stub_id);
1067 assert(entry_count == 1, "sanity check");
1068 address start = load_archive_data(stub_id);
1069 if (start != nullptr) {
1070 return start;
1071 }
1072 __ align(CodeEntryAlignment);
1073 StubCodeMark mark(this, stub_id);
1074 start = __ pc();
1075
1076 __ emit_data64(0x0607040502030001, relocInfo::none);
1077 __ emit_data64(0x0E0F0C0D0A0B0809, relocInfo::none);
1078 __ emit_data64(0x0607040502030001, relocInfo::none);
1079 __ emit_data64(0x0E0F0C0D0A0B0809, relocInfo::none);
1080 __ emit_data64(0x0607040502030001, relocInfo::none);
1081 __ emit_data64(0x0E0F0C0D0A0B0809, relocInfo::none);
1082 __ emit_data64(0x0607040502030001, relocInfo::none);
1083 __ emit_data64(0x0E0F0C0D0A0B0809, relocInfo::none);
1084
1085 // record the stub entry and end
1086 store_archive_data(stub_id, start, __ pc());
1087
1088 return start;
1089 }
1090
1091 address StubGenerator::generate_vector_byte_shuffle_mask() {
1092 StubId stub_id = StubId::stubgen_vector_byte_shuffle_mask_id;
1093 int entry_count = StubInfo::entry_count(stub_id);
1094 assert(entry_count == 1, "sanity check");
1095 address start = load_archive_data(stub_id);
1096 if (start != nullptr) {
1097 return start;
1098 }
1099 __ align(CodeEntryAlignment);
1100 StubCodeMark mark(this, stub_id);
1101 start = __ pc();
1102
1103 __ emit_data64(0x7070707070707070, relocInfo::none);
1104 __ emit_data64(0x7070707070707070, relocInfo::none);
1105 __ emit_data64(0xF0F0F0F0F0F0F0F0, relocInfo::none);
1106 __ emit_data64(0xF0F0F0F0F0F0F0F0, relocInfo::none);
1107
1108 // record the stub entry and end
1109 store_archive_data(stub_id, start, __ pc());
1110
1111 return start;
1112 }
1113
1114 address StubGenerator::generate_fp_mask(StubId stub_id, int64_t mask) {
1115 int entry_count = StubInfo::entry_count(stub_id);
1116 assert(entry_count == 1, "sanity check");
1117 address start = load_archive_data(stub_id);
1118 if (start != nullptr) {
1119 return start;
1120 }
1121 __ align(CodeEntryAlignment);
1122 StubCodeMark mark(this, stub_id);
1123 start = __ pc();
1124
1125 __ emit_data64( mask, relocInfo::none );
1126 __ emit_data64( mask, relocInfo::none );
1127
1128 // record the stub entry and end
1129 store_archive_data(stub_id, start, __ pc());
1130
1131 return start;
1132 }
1133
1134 address StubGenerator::generate_compress_perm_table(StubId stub_id) {
1135 int esize;
1136 switch (stub_id) {
1137 case StubId::stubgen_compress_perm_table32_id:
1138 esize = 32;
1139 break;
1140 case StubId::stubgen_compress_perm_table64_id:
1141 esize = 64;
1142 break;
1143 default:
1144 ShouldNotReachHere();
1145 }
1146 int entry_count = StubInfo::entry_count(stub_id);
1147 assert(entry_count == 1, "sanity check");
1148 address start = load_archive_data(stub_id);
1149 if (start != nullptr) {
1150 return start;
1151 }
1152 __ align(CodeEntryAlignment);
1153 StubCodeMark mark(this, stub_id);
1154 start = __ pc();
1155 if (esize == 32) {
1156 // Loop to generate 256 x 8 int compression permute index table. A row is
1157 // accessed using 8 bit index computed using vector mask. An entry in
1158 // a row holds either a valid permute index corresponding to set bit position
1159 // or a -1 (default) value.
1160 for (int mask = 0; mask < 256; mask++) {
1161 int ctr = 0;
1162 for (int j = 0; j < 8; j++) {
1163 if (mask & (1 << j)) {
1164 __ emit_data(j, relocInfo::none);
1165 ctr++;
1166 }
1167 }
1168 for (; ctr < 8; ctr++) {
1169 __ emit_data(-1, relocInfo::none);
1170 }
1171 }
1172 } else {
1173 assert(esize == 64, "");
1174 // Loop to generate 16 x 4 long compression permute index table. A row is
1175 // accessed using 4 bit index computed using vector mask. An entry in
1176 // a row holds either a valid permute index pair for a quadword corresponding
1177 // to set bit position or a -1 (default) value.
1178 for (int mask = 0; mask < 16; mask++) {
1179 int ctr = 0;
1180 for (int j = 0; j < 4; j++) {
1181 if (mask & (1 << j)) {
1182 __ emit_data(2 * j, relocInfo::none);
1183 __ emit_data(2 * j + 1, relocInfo::none);
1184 ctr++;
1185 }
1186 }
1187 for (; ctr < 4; ctr++) {
1188 __ emit_data64(-1L, relocInfo::none);
1189 }
1190 }
1191 }
1192 // record the stub entry and end
1193 store_archive_data(stub_id, start, __ pc());
1194
1195 return start;
1196 }
1197
1198 address StubGenerator::generate_expand_perm_table(StubId stub_id) {
1199 int esize;
1200 switch (stub_id) {
1201 case StubId::stubgen_expand_perm_table32_id:
1202 esize = 32;
1203 break;
1204 case StubId::stubgen_expand_perm_table64_id:
1205 esize = 64;
1206 break;
1207 default:
1208 ShouldNotReachHere();
1209 }
1210 int entry_count = StubInfo::entry_count(stub_id);
1211 assert(entry_count == 1, "sanity check");
1212 address start = load_archive_data(stub_id);
1213 if (start != nullptr) {
1214 return start;
1215 }
1216 __ align(CodeEntryAlignment);
1217 StubCodeMark mark(this, stub_id);
1218 start = __ pc();
1219 if (esize == 32) {
1220 // Loop to generate 256 x 8 int expand permute index table. A row is accessed
1221 // using 8 bit index computed using vector mask. An entry in a row holds either
1222 // a valid permute index (starting from least significant lane) placed at poisition
1223 // corresponding to set bit position or a -1 (default) value.
1224 for (int mask = 0; mask < 256; mask++) {
1225 int ctr = 0;
1226 for (int j = 0; j < 8; j++) {
1227 if (mask & (1 << j)) {
1228 __ emit_data(ctr++, relocInfo::none);
1229 } else {
1230 __ emit_data(-1, relocInfo::none);
1231 }
1232 }
1233 }
1234 } else {
1235 assert(esize == 64, "");
1236 // Loop to generate 16 x 4 long expand permute index table. A row is accessed
1237 // using 4 bit index computed using vector mask. An entry in a row holds either
1238 // a valid doubleword permute index pair representing a quadword index (starting
1239 // from least significant lane) placed at poisition corresponding to set bit
1240 // position or a -1 (default) value.
1241 for (int mask = 0; mask < 16; mask++) {
1242 int ctr = 0;
1243 for (int j = 0; j < 4; j++) {
1244 if (mask & (1 << j)) {
1245 __ emit_data(2 * ctr, relocInfo::none);
1246 __ emit_data(2 * ctr + 1, relocInfo::none);
1247 ctr++;
1248 } else {
1249 __ emit_data64(-1L, relocInfo::none);
1250 }
1251 }
1252 }
1253 }
1254 // record the stub entry and end
1255 store_archive_data(stub_id, start, __ pc());
1256
1257 return start;
1258 }
1259
1260 address StubGenerator::generate_vector_mask(StubId stub_id, int64_t mask) {
1261 int entry_count = StubInfo::entry_count(stub_id);
1262 assert(entry_count == 1, "sanity check");
1263 address start = load_archive_data(stub_id);
1264 if (start != nullptr) {
1265 return start;
1266 }
1267 __ align(CodeEntryAlignment);
1268 StubCodeMark mark(this, stub_id);
1269 start = __ pc();
1270
1271 __ emit_data64(mask, relocInfo::none);
1272 __ emit_data64(mask, relocInfo::none);
1273 __ emit_data64(mask, relocInfo::none);
1274 __ emit_data64(mask, relocInfo::none);
1275 __ emit_data64(mask, relocInfo::none);
1276 __ emit_data64(mask, relocInfo::none);
1277 __ emit_data64(mask, relocInfo::none);
1278 __ emit_data64(mask, relocInfo::none);
1279
1280 // record the stub entry and end
1281 store_archive_data(stub_id, start, __ pc());
1282
1283 return start;
1284 }
1285
1286 address StubGenerator::generate_vector_byte_perm_mask() {
1287 StubId stub_id = StubId::stubgen_vector_byte_perm_mask_id;
1288 int entry_count = StubInfo::entry_count(stub_id);
1289 assert(entry_count == 1, "sanity check");
1290 address start = load_archive_data(stub_id);
1291 if (start != nullptr) {
1292 return start;
1293 }
1294 __ align(CodeEntryAlignment);
1295 StubCodeMark mark(this, stub_id);
1296 start = __ pc();
1297
1298 __ emit_data64(0x0000000000000001, relocInfo::none);
1299 __ emit_data64(0x0000000000000003, relocInfo::none);
1300 __ emit_data64(0x0000000000000005, relocInfo::none);
1301 __ emit_data64(0x0000000000000007, relocInfo::none);
1302 __ emit_data64(0x0000000000000000, relocInfo::none);
1303 __ emit_data64(0x0000000000000002, relocInfo::none);
1304 __ emit_data64(0x0000000000000004, relocInfo::none);
1305 __ emit_data64(0x0000000000000006, relocInfo::none);
1306
1307 // record the stub entry and end
1308 store_archive_data(stub_id, start, __ pc());
1309
1310 return start;
1311 }
1312
1313 address StubGenerator::generate_vector_fp_mask(StubId stub_id, int64_t mask) {
1314 int entry_count = StubInfo::entry_count(stub_id);
1315 assert(entry_count == 1, "sanity check");
1316 address start = load_archive_data(stub_id);
1317 if (start != nullptr) {
1318 return start;
1319 }
1320 __ align(CodeEntryAlignment);
1321 StubCodeMark mark(this, stub_id);
1322 start = __ pc();
1323
1324 __ emit_data64(mask, relocInfo::none);
1325 __ emit_data64(mask, relocInfo::none);
1326 __ emit_data64(mask, relocInfo::none);
1327 __ emit_data64(mask, relocInfo::none);
1328 __ emit_data64(mask, relocInfo::none);
1329 __ emit_data64(mask, relocInfo::none);
1330 __ emit_data64(mask, relocInfo::none);
1331 __ emit_data64(mask, relocInfo::none);
1332
1333 // record the stub entry and end
1334 store_archive_data(stub_id, start, __ pc());
1335
1336 return start;
1337 }
1338
1339 address StubGenerator::generate_vector_custom_i32(StubId stub_id, Assembler::AvxVectorLen len,
1340 int32_t val0, int32_t val1, int32_t val2, int32_t val3,
1341 int32_t val4, int32_t val5, int32_t val6, int32_t val7,
1342 int32_t val8, int32_t val9, int32_t val10, int32_t val11,
1343 int32_t val12, int32_t val13, int32_t val14, int32_t val15) {
1344 int entry_count = StubInfo::entry_count(stub_id);
1345 assert(entry_count == 1, "sanity check");
1346 address start = load_archive_data(stub_id);
1347 if (start != nullptr) {
1348 return start;
1349 }
1350 __ align(CodeEntryAlignment);
1351 StubCodeMark mark(this, stub_id);
1352 start = __ pc();
1353
1354 assert(len != Assembler::AVX_NoVec, "vector len must be specified");
1355 __ emit_data(val0, relocInfo::none, 0);
1356 __ emit_data(val1, relocInfo::none, 0);
1357 __ emit_data(val2, relocInfo::none, 0);
1358 __ emit_data(val3, relocInfo::none, 0);
1359 if (len >= Assembler::AVX_256bit) {
1360 __ emit_data(val4, relocInfo::none, 0);
1361 __ emit_data(val5, relocInfo::none, 0);
1362 __ emit_data(val6, relocInfo::none, 0);
1363 __ emit_data(val7, relocInfo::none, 0);
1364 if (len >= Assembler::AVX_512bit) {
1365 __ emit_data(val8, relocInfo::none, 0);
1366 __ emit_data(val9, relocInfo::none, 0);
1367 __ emit_data(val10, relocInfo::none, 0);
1368 __ emit_data(val11, relocInfo::none, 0);
1369 __ emit_data(val12, relocInfo::none, 0);
1370 __ emit_data(val13, relocInfo::none, 0);
1371 __ emit_data(val14, relocInfo::none, 0);
1372 __ emit_data(val15, relocInfo::none, 0);
1373 }
1374 }
1375 // record the stub entry and end
1376 store_archive_data(stub_id, start, __ pc());
1377
1378 return start;
1379 }
1380
1381 // Non-destructive plausibility checks for oops
1382 //
1383 // Arguments:
1384 // all args on stack!
1385 //
1386 // Stack after saving c_rarg3:
1387 // [tos + 0]: saved c_rarg3
1388 // [tos + 1]: saved c_rarg2
1389 // [tos + 2]: saved r12 (several TemplateTable methods use it)
1390 // [tos + 3]: saved flags
1391 // [tos + 4]: return address
1392 // * [tos + 5]: error message (char*)
1393 // * [tos + 6]: object to verify (oop)
1394 // * [tos + 7]: saved rax - saved by caller and bashed
1395 // * [tos + 8]: saved r10 (rscratch1) - saved by caller
1396 // * = popped on exit
1397 address StubGenerator::generate_verify_oop() {
1398 StubId stub_id = StubId::stubgen_verify_oop_id;
1399 int entry_count = StubInfo::entry_count(stub_id);
1400 assert(entry_count == 1, "sanity check");
1401 address start = load_archive_data(stub_id);
1402 if (start != nullptr) {
1403 return start;
1404 }
1405 StubCodeMark mark(this, stub_id);
1406 start = __ pc();
1407
1408 Label exit, error;
1409
1410 __ pushf();
1411 __ incrementl(ExternalAddress((address) StubRoutines::verify_oop_count_addr()), rscratch1);
1412
1413 __ push_ppx(r12);
1414
1415 // save c_rarg2 and c_rarg3
1416 __ push_ppx(c_rarg2);
1417 __ push_ppx(c_rarg3);
1418
1419 enum {
1420 // After previous pushes.
1421 oop_to_verify = 6 * wordSize,
1422 saved_rax = 7 * wordSize,
1423 saved_r10 = 8 * wordSize,
1424
1425 // Before the call to MacroAssembler::debug(), see below.
1426 return_addr = 16 * wordSize,
1427 error_msg = 17 * wordSize
1428 };
1429
1430 // get object
1431 __ movptr(rax, Address(rsp, oop_to_verify));
1432
1433 // make sure object is 'reasonable'
1434 __ testptr(rax, rax);
1435 __ jcc(Assembler::zero, exit); // if obj is null it is OK
1436
1437 BarrierSetAssembler* bs_asm = BarrierSet::barrier_set()->barrier_set_assembler();
1438 bs_asm->check_oop(_masm, rax, c_rarg2, c_rarg3, error);
1439
1440 // return if everything seems ok
1441 __ bind(exit);
1442 __ movptr(rax, Address(rsp, saved_rax)); // get saved rax back
1443 __ movptr(rscratch1, Address(rsp, saved_r10)); // get saved r10 back
1444 __ pop_ppx(c_rarg3); // restore c_rarg3
1445 __ pop_ppx(c_rarg2); // restore c_rarg2
1446 __ pop_ppx(r12); // restore r12
1447 __ popf(); // restore flags
1448 __ ret(4 * wordSize); // pop caller saved stuff
1449
1450 // handle errors
1451 __ bind(error);
1452 __ movptr(rax, Address(rsp, saved_rax)); // get saved rax back
1453 __ movptr(rscratch1, Address(rsp, saved_r10)); // get saved r10 back
1454 __ pop_ppx(c_rarg3); // get saved c_rarg3 back
1455 __ pop_ppx(c_rarg2); // get saved c_rarg2 back
1456 __ pop_ppx(r12); // get saved r12 back
1457 __ popf(); // get saved flags off stack --
1458 // will be ignored
1459
1460 __ pusha(); // push registers
1461 // (rip is already
1462 // already pushed)
1463 // debug(char* msg, int64_t pc, int64_t regs[])
1464 // We've popped the registers we'd saved (c_rarg3, c_rarg2 and flags), and
1465 // pushed all the registers, so now the stack looks like:
1466 // [tos + 0] 16 saved registers
1467 // [tos + 16] return address
1468 // * [tos + 17] error message (char*)
1469 // * [tos + 18] object to verify (oop)
1470 // * [tos + 19] saved rax - saved by caller and bashed
1471 // * [tos + 20] saved r10 (rscratch1) - saved by caller
1472 // * = popped on exit
1473
1474 __ movptr(c_rarg0, Address(rsp, error_msg)); // pass address of error message
1475 __ movptr(c_rarg1, Address(rsp, return_addr)); // pass return address
1476 __ movq(c_rarg2, rsp); // pass address of regs on stack
1477 __ mov(r12, rsp); // remember rsp
1478 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows
1479 __ andptr(rsp, -16); // align stack as required by ABI
1480 BLOCK_COMMENT("call MacroAssembler::debug");
1481 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, MacroAssembler::debug64)));
1482 __ hlt();
1483
1484 // record the stub entry and end
1485 store_archive_data(stub_id, start, __ pc());
1486
1487 return start;
1488 }
1489
1490
1491 // Shuffle first three arg regs on Windows into Linux/Solaris locations.
1492 //
1493 // Outputs:
1494 // rdi - rcx
1495 // rsi - rdx
1496 // rdx - r8
1497 // rcx - r9
1498 //
1499 // Registers r9 and r10 are used to save rdi and rsi on Windows, which latter
1500 // are non-volatile. r9 and r10 should not be used by the caller.
1501 //
1502 void StubGenerator::setup_arg_regs(int nargs) {
1503 const Register saved_rdi = r9;
1504 const Register saved_rsi = r10;
1505 assert(nargs == 3 || nargs == 4, "else fix");
1506 #ifdef _WIN64
1507 assert(c_rarg0 == rcx && c_rarg1 == rdx && c_rarg2 == r8 && c_rarg3 == r9,
1508 "unexpected argument registers");
1509 if (nargs == 4) {
1510 __ mov(rax, r9); // r9 is also saved_rdi
1511 }
1512 __ movptr(saved_rdi, rdi);
1513 __ movptr(saved_rsi, rsi);
1514 __ mov(rdi, rcx); // c_rarg0
1515 __ mov(rsi, rdx); // c_rarg1
1516 __ mov(rdx, r8); // c_rarg2
1517 if (nargs == 4) {
1518 __ mov(rcx, rax); // c_rarg3 (via rax)
1519 }
1520 #else
1521 assert(c_rarg0 == rdi && c_rarg1 == rsi && c_rarg2 == rdx && c_rarg3 == rcx,
1522 "unexpected argument registers");
1523 #endif
1524 DEBUG_ONLY(_regs_in_thread = false;)
1525 }
1526
1527
1528 void StubGenerator::restore_arg_regs() {
1529 assert(!_regs_in_thread, "wrong call to restore_arg_regs");
1530 const Register saved_rdi = r9;
1531 const Register saved_rsi = r10;
1532 #ifdef _WIN64
1533 __ movptr(rdi, saved_rdi);
1534 __ movptr(rsi, saved_rsi);
1535 #endif
1536 }
1537
1538
1539 // This is used in places where r10 is a scratch register, and can
1540 // be adapted if r9 is needed also.
1541 void StubGenerator::setup_arg_regs_using_thread(int nargs) {
1542 const Register saved_r15 = r9;
1543 assert(nargs == 3 || nargs == 4, "else fix");
1544 #ifdef _WIN64
1545 if (nargs == 4) {
1546 __ mov(rax, r9); // r9 is also saved_r15
1547 }
1548 __ mov(saved_r15, r15); // r15 is callee saved and needs to be restored
1549 __ get_thread_slow(r15_thread);
1550 assert(c_rarg0 == rcx && c_rarg1 == rdx && c_rarg2 == r8 && c_rarg3 == r9,
1551 "unexpected argument registers");
1552 __ movptr(Address(r15_thread, in_bytes(JavaThread::windows_saved_rdi_offset())), rdi);
1553 __ movptr(Address(r15_thread, in_bytes(JavaThread::windows_saved_rsi_offset())), rsi);
1554
1555 __ mov(rdi, rcx); // c_rarg0
1556 __ mov(rsi, rdx); // c_rarg1
1557 __ mov(rdx, r8); // c_rarg2
1558 if (nargs == 4) {
1559 __ mov(rcx, rax); // c_rarg3 (via rax)
1560 }
1561 #else
1562 assert(c_rarg0 == rdi && c_rarg1 == rsi && c_rarg2 == rdx && c_rarg3 == rcx,
1563 "unexpected argument registers");
1564 #endif
1565 DEBUG_ONLY(_regs_in_thread = true;)
1566 }
1567
1568
1569 void StubGenerator::restore_arg_regs_using_thread() {
1570 assert(_regs_in_thread, "wrong call to restore_arg_regs");
1571 const Register saved_r15 = r9;
1572 #ifdef _WIN64
1573 __ get_thread_slow(r15_thread);
1574 __ movptr(rsi, Address(r15_thread, in_bytes(JavaThread::windows_saved_rsi_offset())));
1575 __ movptr(rdi, Address(r15_thread, in_bytes(JavaThread::windows_saved_rdi_offset())));
1576 __ mov(r15, saved_r15); // r15 is callee saved and needs to be restored
1577 #endif
1578 }
1579
1580
1581 void StubGenerator::setup_argument_regs(BasicType type) {
1582 if (type == T_BYTE || type == T_SHORT) {
1583 setup_arg_regs(); // from => rdi, to => rsi, count => rdx
1584 // r9 and r10 may be used to save non-volatile registers
1585 } else {
1586 setup_arg_regs_using_thread(); // from => rdi, to => rsi, count => rdx
1587 // r9 is used to save r15_thread
1588 }
1589 }
1590
1591
1592 void StubGenerator::restore_argument_regs(BasicType type) {
1593 if (type == T_BYTE || type == T_SHORT) {
1594 restore_arg_regs();
1595 } else {
1596 restore_arg_regs_using_thread();
1597 }
1598 }
1599
1600 address StubGenerator::generate_data_cache_writeback() {
1601 const Register src = c_rarg0; // source address
1602 StubId stub_id = StubId::stubgen_data_cache_writeback_id;
1603 int entry_count = StubInfo::entry_count(stub_id);
1604 assert(entry_count == 1, "sanity check");
1605 address start = load_archive_data(stub_id);
1606 if (start != nullptr) {
1607 return start;
1608 }
1609 __ align(CodeEntryAlignment);
1610 StubCodeMark mark(this, stub_id);
1611
1612 start = __ pc();
1613
1614 __ enter();
1615 __ cache_wb(Address(src, 0));
1616 __ leave();
1617 __ ret(0);
1618
1619 // record the stub entry and end
1620 store_archive_data(stub_id, start, __ pc());
1621
1622 return start;
1623 }
1624
1625 address StubGenerator::generate_data_cache_writeback_sync() {
1626 const Register is_pre = c_rarg0; // pre or post sync
1627 StubId stub_id = StubId::stubgen_data_cache_writeback_sync_id;
1628 int entry_count = StubInfo::entry_count(stub_id);
1629 assert(entry_count == 1, "sanity check");
1630 address start = load_archive_data(stub_id);
1631 if (start != nullptr) {
1632 return start;
1633 }
1634 __ align(CodeEntryAlignment);
1635 StubCodeMark mark(this, stub_id);
1636
1637 // pre wbsync is a no-op
1638 // post wbsync translates to an sfence
1639
1640 Label skip;
1641 start = __ pc();
1642
1643 __ enter();
1644 __ cmpl(is_pre, 0);
1645 __ jcc(Assembler::notEqual, skip);
1646 __ cache_wbsync(false);
1647 __ bind(skip);
1648 __ leave();
1649 __ ret(0);
1650
1651 // record the stub entry and end
1652 store_archive_data(stub_id, start, __ pc());
1653
1654 return start;
1655 }
1656
1657 // ofs and limit are use for multi-block byte array.
1658 // int com.sun.security.provider.MD5.implCompress(byte[] b, int ofs)
1659 address StubGenerator::generate_md5_implCompress(StubId stub_id) {
1660 bool multi_block;
1661 switch (stub_id) {
1662 case StubId::stubgen_md5_implCompress_id:
1663 multi_block = false;
1664 break;
1665 case StubId::stubgen_md5_implCompressMB_id:
1666 multi_block = true;
1667 break;
1668 default:
1669 ShouldNotReachHere();
1670 }
1671 int entry_count = StubInfo::entry_count(stub_id);
1672 assert(entry_count == 1, "sanity check");
1673 address start = load_archive_data(stub_id);
1674 if (start != nullptr) {
1675 return start;
1676 }
1677 __ align(CodeEntryAlignment);
1678 StubCodeMark mark(this, stub_id);
1679 start = __ pc();
1680
1681 const Register buf_param = r15;
1682 const Address state_param(rsp, 0 * wordSize);
1683 const Address ofs_param (rsp, 1 * wordSize );
1684 const Address limit_param(rsp, 1 * wordSize + 4);
1685
1686 __ enter();
1687 __ push_ppx(rbx);
1688 __ push_ppx(rdi);
1689 __ push_ppx(rsi);
1690 __ push_ppx(r15);
1691 __ subptr(rsp, 2 * wordSize);
1692
1693 __ movptr(buf_param, c_rarg0);
1694 __ movptr(state_param, c_rarg1);
1695 if (multi_block) {
1696 __ movl(ofs_param, c_rarg2);
1697 __ movl(limit_param, c_rarg3);
1698 }
1699 __ fast_md5(buf_param, state_param, ofs_param, limit_param, multi_block);
1700
1701 __ addptr(rsp, 2 * wordSize);
1702 __ pop_ppx(r15);
1703 __ pop_ppx(rsi);
1704 __ pop_ppx(rdi);
1705 __ pop_ppx(rbx);
1706 __ leave();
1707 __ ret(0);
1708
1709 // record the stub entry and end
1710 store_archive_data(stub_id, start, __ pc());
1711
1712 return start;
1713 }
1714
1715 address StubGenerator::generate_upper_word_mask() {
1716 StubId stub_id = StubId::stubgen_upper_word_mask_id;
1717 int entry_count = StubInfo::entry_count(stub_id);
1718 assert(entry_count == 1, "sanity check");
1719 address start = load_archive_data(stub_id);
1720 if (start != nullptr) {
1721 return start;
1722 }
1723 __ align64();
1724 StubCodeMark mark(this, stub_id);
1725 start = __ pc();
1726
1727 __ emit_data64(0x0000000000000000, relocInfo::none);
1728 __ emit_data64(0xFFFFFFFF00000000, relocInfo::none);
1729
1730 // record the stub entry and end
1731 store_archive_data(stub_id, start, __ pc());
1732
1733 return start;
1734 }
1735
1736 address StubGenerator::generate_shuffle_byte_flip_mask() {
1737 StubId stub_id = StubId::stubgen_shuffle_byte_flip_mask_id;
1738 int entry_count = StubInfo::entry_count(stub_id);
1739 assert(entry_count == 1, "sanity check");
1740 address start = load_archive_data(stub_id);
1741 if (start != nullptr) {
1742 return start;
1743 }
1744 __ align64();
1745 StubCodeMark mark(this, stub_id);
1746 start = __ pc();
1747
1748 __ emit_data64(0x08090a0b0c0d0e0f, relocInfo::none);
1749 __ emit_data64(0x0001020304050607, relocInfo::none);
1750
1751 // record the stub entry and end
1752 store_archive_data(stub_id, start, __ pc());
1753
1754 return start;
1755 }
1756
1757 // ofs and limit are use for multi-block byte array.
1758 // int com.sun.security.provider.DigestBase.implCompressMultiBlock(byte[] b, int ofs, int limit)
1759 address StubGenerator::generate_sha1_implCompress(StubId stub_id) {
1760 bool multi_block;
1761 switch (stub_id) {
1762 case StubId::stubgen_sha1_implCompress_id:
1763 multi_block = false;
1764 break;
1765 case StubId::stubgen_sha1_implCompressMB_id:
1766 multi_block = true;
1767 break;
1768 default:
1769 ShouldNotReachHere();
1770 }
1771 int entry_count = StubInfo::entry_count(stub_id);
1772 assert(entry_count == 1, "sanity check");
1773 address start = load_archive_data(stub_id);
1774 if (start != nullptr) {
1775 return start;
1776 }
1777 __ align(CodeEntryAlignment);
1778 StubCodeMark mark(this, stub_id);
1779 start = __ pc();
1780
1781 Register buf = c_rarg0;
1782 Register state = c_rarg1;
1783 Register ofs = c_rarg2;
1784 Register limit = c_rarg3;
1785
1786 const XMMRegister abcd = xmm0;
1787 const XMMRegister e0 = xmm1;
1788 const XMMRegister e1 = xmm2;
1789 const XMMRegister msg0 = xmm3;
1790
1791 const XMMRegister msg1 = xmm4;
1792 const XMMRegister msg2 = xmm5;
1793 const XMMRegister msg3 = xmm6;
1794 const XMMRegister shuf_mask = xmm7;
1795
1796 __ enter();
1797
1798 __ subptr(rsp, 4 * wordSize);
1799
1800 __ fast_sha1(abcd, e0, e1, msg0, msg1, msg2, msg3, shuf_mask,
1801 buf, state, ofs, limit, rsp, multi_block);
1802
1803 __ addptr(rsp, 4 * wordSize);
1804
1805 __ leave();
1806 __ ret(0);
1807
1808 // record the stub entry and end
1809 store_archive_data(stub_id, start, __ pc());
1810
1811 return start;
1812 }
1813
1814 address StubGenerator::generate_pshuffle_byte_flip_mask(address& entry_00ba, address& entry_dc00) {
1815 StubId stub_id = StubId::stubgen_pshuffle_byte_flip_mask_id;
1816 GrowableArray<address> entries;
1817 int entry_count = StubInfo::entry_count(stub_id);
1818 assert(entry_count == 3, "sanity check");
1819 address start = load_archive_data(stub_id, &entries);
1820 if (start != nullptr) {
1821 assert(entries.length() == entry_count - 1,
1822 "unexpected extra entry count %d", entries.length());
1823 entry_00ba = entries.at(0);
1824 entry_dc00 = entries.at(1);
1825 assert(VM_Version::supports_avx2() == (entry_00ba != nullptr && entry_dc00 != nullptr),
1826 "entries cannot be null when avx2 is enabled");
1827 return start;
1828 }
1829 __ align64();
1830 StubCodeMark mark(this, stub_id);
1831 start = __ pc();
1832 address entry2 = nullptr;
1833 address entry3 = nullptr;
1834 __ emit_data64(0x0405060700010203, relocInfo::none);
1835 __ emit_data64(0x0c0d0e0f08090a0b, relocInfo::none);
1836
1837 if (VM_Version::supports_avx2()) {
1838 __ emit_data64(0x0405060700010203, relocInfo::none); // second copy
1839 __ emit_data64(0x0c0d0e0f08090a0b, relocInfo::none);
1840 // _SHUF_00BA
1841 entry2 = __ pc();
1842 __ emit_data64(0x0b0a090803020100, relocInfo::none);
1843 __ emit_data64(0xFFFFFFFFFFFFFFFF, relocInfo::none);
1844 __ emit_data64(0x0b0a090803020100, relocInfo::none);
1845 __ emit_data64(0xFFFFFFFFFFFFFFFF, relocInfo::none);
1846 // _SHUF_DC00
1847 entry3 = __ pc();
1848 __ emit_data64(0xFFFFFFFFFFFFFFFF, relocInfo::none);
1849 __ emit_data64(0x0b0a090803020100, relocInfo::none);
1850 __ emit_data64(0xFFFFFFFFFFFFFFFF, relocInfo::none);
1851 __ emit_data64(0x0b0a090803020100, relocInfo::none);
1852 }
1853 // have to track the 2nd and 3rd entries even if they are null
1854 entry_00ba = entry2;
1855 entries.push(entry_00ba);
1856 entry_dc00 = entry3;
1857 entries.push(entry_dc00);
1858
1859 // record the stub entry and end plus all the auxiliary entries
1860 store_archive_data(stub_id, start, __ pc(), &entries);
1861
1862 return start;
1863 }
1864
1865 //Mask for byte-swapping a couple of qwords in an XMM register using (v)pshufb.
1866 address StubGenerator::generate_pshuffle_byte_flip_mask_sha512(address& entry_ymm_lo) {
1867 StubId stub_id = StubId::stubgen_pshuffle_byte_flip_mask_sha512_id;
1868 GrowableArray<address> entries;
1869 int entry_count = StubInfo::entry_count(stub_id);
1870 assert(entry_count == 2, "sanity check");
1871 address start = load_archive_data(stub_id, &entries);
1872 if (start != nullptr) {
1873 assert(entries.length() == entry_count - 1,
1874 "unexpected extra entry count %d", entries.length());
1875 entry_ymm_lo = entries.at(0);
1876 assert(VM_Version::supports_avx2() == (entry_ymm_lo != nullptr),
1877 "entry cannot be null when avx2 is enabled");
1878 return start;
1879 }
1880 __ align32();
1881 StubCodeMark mark(this, stub_id);
1882 start = __ pc();
1883 address entry2 = nullptr;
1884 if (VM_Version::supports_avx2()) {
1885 __ emit_data64(0x0001020304050607, relocInfo::none); // PSHUFFLE_BYTE_FLIP_MASK
1886 __ emit_data64(0x08090a0b0c0d0e0f, relocInfo::none);
1887 __ emit_data64(0x1011121314151617, relocInfo::none);
1888 __ emit_data64(0x18191a1b1c1d1e1f, relocInfo::none);
1889 // capture 2nd entry
1890 entry2 = __ pc();
1891 __ emit_data64(0x0000000000000000, relocInfo::none); //MASK_YMM_LO
1892 __ emit_data64(0x0000000000000000, relocInfo::none);
1893 __ emit_data64(0xFFFFFFFFFFFFFFFF, relocInfo::none);
1894 __ emit_data64(0xFFFFFFFFFFFFFFFF, relocInfo::none);
1895 }
1896 // have to track the 2nd entry even if it is null
1897 entry_ymm_lo = entry2;
1898 entries.push(entry2);
1899 // record the stub entry and end
1900 store_archive_data(stub_id, start, __ pc(), &entries);
1901
1902 return start;
1903 }
1904
1905 // ofs and limit are use for multi-block byte array.
1906 // int com.sun.security.provider.DigestBase.implCompressMultiBlock(byte[] b, int ofs, int limit)
1907 address StubGenerator::generate_sha256_implCompress(StubId stub_id) {
1908 bool multi_block;
1909 switch (stub_id) {
1910 case StubId::stubgen_sha256_implCompress_id:
1911 multi_block = false;
1912 break;
1913 case StubId::stubgen_sha256_implCompressMB_id:
1914 multi_block = true;
1915 break;
1916 default:
1917 ShouldNotReachHere();
1918 }
1919 assert(VM_Version::supports_sha() || VM_Version::supports_avx2(), "");
1920 int entry_count = StubInfo::entry_count(stub_id);
1921 assert(entry_count == 1, "sanity check");
1922 address start = load_archive_data(stub_id);
1923 if (start != nullptr) {
1924 return start;
1925 }
1926 __ align(CodeEntryAlignment);
1927 StubCodeMark mark(this, stub_id);
1928 start = __ pc();
1929
1930 Register buf = c_rarg0;
1931 Register state = c_rarg1;
1932 Register ofs = c_rarg2;
1933 Register limit = c_rarg3;
1934
1935 const XMMRegister msg = xmm0;
1936 const XMMRegister state0 = xmm1;
1937 const XMMRegister state1 = xmm2;
1938 const XMMRegister msgtmp0 = xmm3;
1939
1940 const XMMRegister msgtmp1 = xmm4;
1941 const XMMRegister msgtmp2 = xmm5;
1942 const XMMRegister msgtmp3 = xmm6;
1943 const XMMRegister msgtmp4 = xmm7;
1944
1945 const XMMRegister shuf_mask = xmm8;
1946
1947 __ enter();
1948
1949 __ subptr(rsp, 4 * wordSize);
1950
1951 if (VM_Version::supports_sha()) {
1952 __ fast_sha256(msg, state0, state1, msgtmp0, msgtmp1, msgtmp2, msgtmp3, msgtmp4,
1953 buf, state, ofs, limit, rsp, multi_block, shuf_mask);
1954 } else if (VM_Version::supports_avx2()) {
1955 __ sha256_AVX2(msg, state0, state1, msgtmp0, msgtmp1, msgtmp2, msgtmp3, msgtmp4,
1956 buf, state, ofs, limit, rsp, multi_block, shuf_mask);
1957 }
1958 __ addptr(rsp, 4 * wordSize);
1959 __ vzeroupper();
1960 __ leave();
1961 __ ret(0);
1962
1963 // record the stub entry and end
1964 store_archive_data(stub_id, start, __ pc());
1965
1966 return start;
1967 }
1968
1969 address StubGenerator::generate_sha512_implCompress(StubId stub_id) {
1970 bool multi_block;
1971 switch (stub_id) {
1972 case StubId::stubgen_sha512_implCompress_id:
1973 multi_block = false;
1974 break;
1975 case StubId::stubgen_sha512_implCompressMB_id:
1976 multi_block = true;
1977 break;
1978 default:
1979 ShouldNotReachHere();
1980 }
1981 assert(VM_Version::supports_avx2(), "");
1982 assert(VM_Version::supports_bmi2() || VM_Version::supports_sha512(), "");
1983 int entry_count = StubInfo::entry_count(stub_id);
1984 assert(entry_count == 1, "sanity check");
1985 address start = load_archive_data(stub_id);
1986 if (start != nullptr) {
1987 return start;
1988 }
1989 __ align(CodeEntryAlignment);
1990 StubCodeMark mark(this, stub_id);
1991 start = __ pc();
1992
1993 Register buf = c_rarg0;
1994 Register state = c_rarg1;
1995 Register ofs = c_rarg2;
1996 Register limit = c_rarg3;
1997
1998 __ enter();
1999
2000 if (VM_Version::supports_sha512()) {
2001 __ sha512_update_ni_x1(state, buf, ofs, limit, multi_block);
2002 } else {
2003 const XMMRegister msg = xmm0;
2004 const XMMRegister state0 = xmm1;
2005 const XMMRegister state1 = xmm2;
2006 const XMMRegister msgtmp0 = xmm3;
2007 const XMMRegister msgtmp1 = xmm4;
2008 const XMMRegister msgtmp2 = xmm5;
2009 const XMMRegister msgtmp3 = xmm6;
2010 const XMMRegister msgtmp4 = xmm7;
2011
2012 const XMMRegister shuf_mask = xmm8;
2013 __ sha512_AVX2(msg, state0, state1, msgtmp0, msgtmp1, msgtmp2, msgtmp3, msgtmp4,
2014 buf, state, ofs, limit, rsp, multi_block, shuf_mask);
2015 }
2016 __ vzeroupper();
2017 __ leave();
2018 __ ret(0);
2019
2020 // record the stub entry and end
2021 store_archive_data(stub_id, start, __ pc());
2022
2023 return start;
2024 }
2025
2026 address StubGenerator::base64_shuffle_addr() {
2027 StubId stub_id = StubId::stubgen_shuffle_base64_id;
2028 int entry_count = StubInfo::entry_count(stub_id);
2029 assert(entry_count == 1, "sanity check");
2030 address start = load_archive_data(stub_id);
2031 if (start != nullptr) {
2032 return start;
2033 }
2034 __ align64();
2035 StubCodeMark mark(this, stub_id);
2036 start = __ pc();
2037
2038 assert(((unsigned long long)start & 0x3f) == 0,
2039 "Alignment problem (0x%08llx)", (unsigned long long)start);
2040 __ emit_data64(0x0405030401020001, relocInfo::none);
2041 __ emit_data64(0x0a0b090a07080607, relocInfo::none);
2042 __ emit_data64(0x10110f100d0e0c0d, relocInfo::none);
2043 __ emit_data64(0x1617151613141213, relocInfo::none);
2044 __ emit_data64(0x1c1d1b1c191a1819, relocInfo::none);
2045 __ emit_data64(0x222321221f201e1f, relocInfo::none);
2046 __ emit_data64(0x2829272825262425, relocInfo::none);
2047 __ emit_data64(0x2e2f2d2e2b2c2a2b, relocInfo::none);
2048
2049 // record the stub entry and end
2050 store_archive_data(stub_id, start, __ pc());
2051
2052 return start;
2053 }
2054
2055 address StubGenerator::base64_avx2_shuffle_addr() {
2056 StubId stub_id = StubId::stubgen_avx2_shuffle_base64_id;
2057 int entry_count = StubInfo::entry_count(stub_id);
2058 assert(entry_count == 1, "sanity check");
2059 address start = load_archive_data(stub_id);
2060 if (start != nullptr) {
2061 return start;
2062 }
2063 __ align32();
2064 StubCodeMark mark(this, stub_id);
2065 start = __ pc();
2066
2067 __ emit_data64(0x0809070805060405, relocInfo::none);
2068 __ emit_data64(0x0e0f0d0e0b0c0a0b, relocInfo::none);
2069 __ emit_data64(0x0405030401020001, relocInfo::none);
2070 __ emit_data64(0x0a0b090a07080607, relocInfo::none);
2071
2072 // record the stub entry and end
2073 store_archive_data(stub_id, start, __ pc());
2074
2075 return start;
2076 }
2077
2078 address StubGenerator::base64_avx2_input_mask_addr() {
2079 StubId stub_id = StubId::stubgen_avx2_input_mask_base64_id;
2080 int entry_count = StubInfo::entry_count(stub_id);
2081 assert(entry_count == 1, "sanity check");
2082 address start = load_archive_data(stub_id);
2083 if (start != nullptr) {
2084 return start;
2085 }
2086 __ align32();
2087 StubCodeMark mark(this, stub_id);
2088 start = __ pc();
2089
2090 __ emit_data64(0x8000000000000000, relocInfo::none);
2091 __ emit_data64(0x8000000080000000, relocInfo::none);
2092 __ emit_data64(0x8000000080000000, relocInfo::none);
2093 __ emit_data64(0x8000000080000000, relocInfo::none);
2094
2095 // record the stub entry and end
2096 store_archive_data(stub_id, start, __ pc());
2097
2098 return start;
2099 }
2100
2101 address StubGenerator::base64_avx2_lut_addr() {
2102 StubId stub_id = StubId::stubgen_avx2_lut_base64_id;
2103 int entry_count = StubInfo::entry_count(stub_id);
2104 assert(entry_count == 1, "sanity check");
2105 address start = load_archive_data(stub_id);
2106 if (start != nullptr) {
2107 return start;
2108 }
2109 __ align32();
2110 StubCodeMark mark(this, stub_id);
2111 start = __ pc();
2112
2113 __ emit_data64(0xfcfcfcfcfcfc4741, relocInfo::none);
2114 __ emit_data64(0x0000f0edfcfcfcfc, relocInfo::none);
2115 __ emit_data64(0xfcfcfcfcfcfc4741, relocInfo::none);
2116 __ emit_data64(0x0000f0edfcfcfcfc, relocInfo::none);
2117
2118 // URL LUT
2119 __ emit_data64(0xfcfcfcfcfcfc4741, relocInfo::none);
2120 __ emit_data64(0x000020effcfcfcfc, relocInfo::none);
2121 __ emit_data64(0xfcfcfcfcfcfc4741, relocInfo::none);
2122 __ emit_data64(0x000020effcfcfcfc, relocInfo::none);
2123
2124 // record the stub entry and end
2125 store_archive_data(stub_id, start, __ pc());
2126
2127 return start;
2128 }
2129
2130 address StubGenerator::base64_encoding_table_addr() {
2131 StubId stub_id = StubId::stubgen_encoding_table_base64_id;
2132 int entry_count = StubInfo::entry_count(stub_id);
2133 assert(entry_count == 1, "sanity check");
2134 address start = load_archive_data(stub_id);
2135 if (start != nullptr) {
2136 return start;
2137 }
2138 __ align64();
2139 StubCodeMark mark(this, stub_id);
2140 start = __ pc();
2141
2142 assert(((unsigned long long)start & 0x3f) == 0, "Alignment problem (0x%08llx)", (unsigned long long)start);
2143 __ emit_data64(0x4847464544434241, relocInfo::none);
2144 __ emit_data64(0x504f4e4d4c4b4a49, relocInfo::none);
2145 __ emit_data64(0x5857565554535251, relocInfo::none);
2146 __ emit_data64(0x6665646362615a59, relocInfo::none);
2147 __ emit_data64(0x6e6d6c6b6a696867, relocInfo::none);
2148 __ emit_data64(0x767574737271706f, relocInfo::none);
2149 __ emit_data64(0x333231307a797877, relocInfo::none);
2150 __ emit_data64(0x2f2b393837363534, relocInfo::none);
2151
2152 // URL table
2153 __ emit_data64(0x4847464544434241, relocInfo::none);
2154 __ emit_data64(0x504f4e4d4c4b4a49, relocInfo::none);
2155 __ emit_data64(0x5857565554535251, relocInfo::none);
2156 __ emit_data64(0x6665646362615a59, relocInfo::none);
2157 __ emit_data64(0x6e6d6c6b6a696867, relocInfo::none);
2158 __ emit_data64(0x767574737271706f, relocInfo::none);
2159 __ emit_data64(0x333231307a797877, relocInfo::none);
2160 __ emit_data64(0x5f2d393837363534, relocInfo::none);
2161
2162 // record the stub entry and end
2163 store_archive_data(stub_id, start, __ pc());
2164
2165 return start;
2166 }
2167
2168 // Code for generating Base64 encoding.
2169 // Intrinsic function prototype in Base64.java:
2170 // private void encodeBlock(byte[] src, int sp, int sl, byte[] dst, int dp,
2171 // boolean isURL) {
2172 address StubGenerator::generate_base64_encodeBlock()
2173 {
2174 StubId stub_id = StubId::stubgen_base64_encodeBlock_id;
2175 int entry_count = StubInfo::entry_count(stub_id);
2176 assert(entry_count == 1, "sanity check");
2177 address start = load_archive_data(stub_id);
2178 if (start != nullptr) {
2179 return start;
2180 }
2181 __ align(CodeEntryAlignment);
2182 StubCodeMark mark(this, stub_id);
2183 start = __ pc();
2184
2185 __ enter();
2186
2187 // Save callee-saved registers before using them
2188 __ push_ppx(r12);
2189 __ push_ppx(r13);
2190 __ push_ppx(r14);
2191 __ push_ppx(r15);
2192
2193 // arguments
2194 const Register source = c_rarg0; // Source Array
2195 const Register start_offset = c_rarg1; // start offset
2196 const Register end_offset = c_rarg2; // end offset
2197 const Register dest = c_rarg3; // destination array
2198
2199 #ifndef _WIN64
2200 const Register dp = c_rarg4; // Position for writing to dest array
2201 const Register isURL = c_rarg5; // Base64 or URL character set
2202 #else
2203 const Address dp_mem(rbp, 6 * wordSize); // length is on stack on Win64
2204 const Address isURL_mem(rbp, 7 * wordSize);
2205 const Register isURL = r10; // pick the volatile windows register
2206 const Register dp = r12;
2207 __ movl(dp, dp_mem);
2208 __ movl(isURL, isURL_mem);
2209 #endif
2210
2211 const Register length = r14;
2212 const Register encode_table = r13;
2213 Label L_process3, L_exit, L_processdata, L_vbmiLoop, L_not512, L_32byteLoop;
2214
2215 // calculate length from offsets
2216 __ movl(length, end_offset);
2217 __ subl(length, start_offset);
2218 __ jcc(Assembler::lessEqual, L_exit);
2219
2220 // Code for 512-bit VBMI encoding. Encodes 48 input bytes into 64
2221 // output bytes. We read 64 input bytes and ignore the last 16, so be
2222 // sure not to read past the end of the input buffer.
2223 if (VM_Version::supports_avx512_vbmi()) {
2224 __ cmpl(length, 64); // Do not overrun input buffer.
2225 __ jcc(Assembler::below, L_not512);
2226
2227 __ shll(isURL, 6); // index into decode table based on isURL
2228 __ lea(encode_table, ExternalAddress(StubRoutines::x86::base64_encoding_table_addr()));
2229 __ addptr(encode_table, isURL);
2230 __ shrl(isURL, 6); // restore isURL
2231
2232 __ mov64(rax, 0x3036242a1016040aull); // Shifts
2233 __ evmovdquq(xmm3, ExternalAddress(StubRoutines::x86::base64_shuffle_addr()), Assembler::AVX_512bit, r15);
2234 __ evmovdquq(xmm2, Address(encode_table, 0), Assembler::AVX_512bit);
2235 __ evpbroadcastq(xmm1, rax, Assembler::AVX_512bit);
2236
2237 __ align32();
2238 __ BIND(L_vbmiLoop);
2239
2240 __ vpermb(xmm0, xmm3, Address(source, start_offset), Assembler::AVX_512bit);
2241 __ subl(length, 48);
2242
2243 // Put the input bytes into the proper lanes for writing, then
2244 // encode them.
2245 __ evpmultishiftqb(xmm0, xmm1, xmm0, Assembler::AVX_512bit);
2246 __ vpermb(xmm0, xmm0, xmm2, Assembler::AVX_512bit);
2247
2248 // Write to destination
2249 __ evmovdquq(Address(dest, dp), xmm0, Assembler::AVX_512bit);
2250
2251 __ addptr(dest, 64);
2252 __ addptr(source, 48);
2253 __ cmpl(length, 64);
2254 __ jcc(Assembler::aboveEqual, L_vbmiLoop);
2255
2256 __ vzeroupper();
2257 }
2258
2259 __ BIND(L_not512);
2260 if (VM_Version::supports_avx2()) {
2261 /*
2262 ** This AVX2 encoder is based off the paper at:
2263 ** https://dl.acm.org/doi/10.1145/3132709
2264 **
2265 ** We use AVX2 SIMD instructions to encode 24 bytes into 32
2266 ** output bytes.
2267 **
2268 */
2269 // Lengths under 32 bytes are done with scalar routine
2270 __ cmpl(length, 31);
2271 __ jcc(Assembler::belowEqual, L_process3);
2272
2273 // Set up supporting constant table data
2274 __ vmovdqu(xmm9, ExternalAddress(StubRoutines::x86::base64_avx2_shuffle_addr()), rax);
2275 // 6-bit mask for 2nd and 4th (and multiples) 6-bit values
2276 __ movl(rax, 0x0fc0fc00);
2277 __ movdl(xmm8, rax);
2278 __ vmovdqu(xmm1, ExternalAddress(StubRoutines::x86::base64_avx2_input_mask_addr()), rax);
2279 __ vpbroadcastd(xmm8, xmm8, Assembler::AVX_256bit);
2280
2281 // Multiplication constant for "shifting" right by 6 and 10
2282 // bits
2283 __ movl(rax, 0x04000040);
2284
2285 __ subl(length, 24);
2286 __ movdl(xmm7, rax);
2287 __ vpbroadcastd(xmm7, xmm7, Assembler::AVX_256bit);
2288
2289 // For the first load, we mask off reading of the first 4
2290 // bytes into the register. This is so we can get 4 3-byte
2291 // chunks into each lane of the register, avoiding having to
2292 // handle end conditions. We then shuffle these bytes into a
2293 // specific order so that manipulation is easier.
2294 //
2295 // The initial read loads the XMM register like this:
2296 //
2297 // Lower 128-bit lane:
2298 // +----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+
2299 // | XX | XX | XX | XX | A0 | A1 | A2 | B0 | B1 | B2 | C0 | C1
2300 // | C2 | D0 | D1 | D2 |
2301 // +----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+
2302 //
2303 // Upper 128-bit lane:
2304 // +----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+
2305 // | E0 | E1 | E2 | F0 | F1 | F2 | G0 | G1 | G2 | H0 | H1 | H2
2306 // | XX | XX | XX | XX |
2307 // +----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+
2308 //
2309 // Where A0 is the first input byte, B0 is the fourth, etc.
2310 // The alphabetical significance denotes the 3 bytes to be
2311 // consumed and encoded into 4 bytes.
2312 //
2313 // We then shuffle the register so each 32-bit word contains
2314 // the sequence:
2315 // A1 A0 A2 A1, B1, B0, B2, B1, etc.
2316 // Each of these byte sequences are then manipulated into 4
2317 // 6-bit values ready for encoding.
2318 //
2319 // If we focus on one set of 3-byte chunks, changing the
2320 // nomenclature such that A0 => a, A1 => b, and A2 => c, we
2321 // shuffle such that each 24-bit chunk contains:
2322 //
2323 // b7 b6 b5 b4 b3 b2 b1 b0 | a7 a6 a5 a4 a3 a2 a1 a0 | c7 c6
2324 // c5 c4 c3 c2 c1 c0 | b7 b6 b5 b4 b3 b2 b1 b0
2325 // Explain this step.
2326 // b3 b2 b1 b0 c5 c4 c3 c2 | c1 c0 d5 d4 d3 d2 d1 d0 | a5 a4
2327 // a3 a2 a1 a0 b5 b4 | b3 b2 b1 b0 c5 c4 c3 c2
2328 //
2329 // W first and off all but bits 4-9 and 16-21 (c5..c0 and
2330 // a5..a0) and shift them using a vector multiplication
2331 // operation (vpmulhuw) which effectively shifts c right by 6
2332 // bits and a right by 10 bits. We similarly mask bits 10-15
2333 // (d5..d0) and 22-27 (b5..b0) and shift them left by 8 and 4
2334 // bits respectively. This is done using vpmullw. We end up
2335 // with 4 6-bit values, thus splitting the 3 input bytes,
2336 // ready for encoding:
2337 // 0 0 d5..d0 0 0 c5..c0 0 0 b5..b0 0 0 a5..a0
2338 //
2339 // For translation, we recognize that there are 5 distinct
2340 // ranges of legal Base64 characters as below:
2341 //
2342 // +-------------+-------------+------------+
2343 // | 6-bit value | ASCII range | offset |
2344 // +-------------+-------------+------------+
2345 // | 0..25 | A..Z | 65 |
2346 // | 26..51 | a..z | 71 |
2347 // | 52..61 | 0..9 | -4 |
2348 // | 62 | + or - | -19 or -17 |
2349 // | 63 | / or _ | -16 or 32 |
2350 // +-------------+-------------+------------+
2351 //
2352 // We note that vpshufb does a parallel lookup in a
2353 // destination register using the lower 4 bits of bytes from a
2354 // source register. If we use a saturated subtraction and
2355 // subtract 51 from each 6-bit value, bytes from [0,51]
2356 // saturate to 0, and [52,63] map to a range of [1,12]. We
2357 // distinguish the [0,25] and [26,51] ranges by assigning a
2358 // value of 13 for all 6-bit values less than 26. We end up
2359 // with:
2360 //
2361 // +-------------+-------------+------------+
2362 // | 6-bit value | Reduced | offset |
2363 // +-------------+-------------+------------+
2364 // | 0..25 | 13 | 65 |
2365 // | 26..51 | 0 | 71 |
2366 // | 52..61 | 0..9 | -4 |
2367 // | 62 | 11 | -19 or -17 |
2368 // | 63 | 12 | -16 or 32 |
2369 // +-------------+-------------+------------+
2370 //
2371 // We then use a final vpshufb to add the appropriate offset,
2372 // translating the bytes.
2373 //
2374 // Load input bytes - only 28 bytes. Mask the first load to
2375 // not load into the full register.
2376 __ vpmaskmovd(xmm1, xmm1, Address(source, start_offset, Address::times_1, -4), Assembler::AVX_256bit);
2377
2378 // Move 3-byte chunks of input (12 bytes) into 16 bytes,
2379 // ordering by:
2380 // 1, 0, 2, 1; 4, 3, 5, 4; etc. This groups 6-bit chunks
2381 // for easy masking
2382 __ vpshufb(xmm1, xmm1, xmm9, Assembler::AVX_256bit);
2383
2384 __ addl(start_offset, 24);
2385
2386 // Load masking register for first and third (and multiples)
2387 // 6-bit values.
2388 __ movl(rax, 0x003f03f0);
2389 __ movdl(xmm6, rax);
2390 __ vpbroadcastd(xmm6, xmm6, Assembler::AVX_256bit);
2391 // Multiplication constant for "shifting" left by 4 and 8 bits
2392 __ movl(rax, 0x01000010);
2393 __ movdl(xmm5, rax);
2394 __ vpbroadcastd(xmm5, xmm5, Assembler::AVX_256bit);
2395
2396 // Isolate 6-bit chunks of interest
2397 __ vpand(xmm0, xmm8, xmm1, Assembler::AVX_256bit);
2398
2399 // Load constants for encoding
2400 __ movl(rax, 0x19191919);
2401 __ movdl(xmm3, rax);
2402 __ vpbroadcastd(xmm3, xmm3, Assembler::AVX_256bit);
2403 __ movl(rax, 0x33333333);
2404 __ movdl(xmm4, rax);
2405 __ vpbroadcastd(xmm4, xmm4, Assembler::AVX_256bit);
2406
2407 // Shift output bytes 0 and 2 into proper lanes
2408 __ vpmulhuw(xmm2, xmm0, xmm7, Assembler::AVX_256bit);
2409
2410 // Mask and shift output bytes 1 and 3 into proper lanes and
2411 // combine
2412 __ vpand(xmm0, xmm6, xmm1, Assembler::AVX_256bit);
2413 __ vpmullw(xmm0, xmm5, xmm0, Assembler::AVX_256bit);
2414 __ vpor(xmm0, xmm0, xmm2, Assembler::AVX_256bit);
2415
2416 // Find out which are 0..25. This indicates which input
2417 // values fall in the range of 'A'-'Z', which require an
2418 // additional offset (see comments above)
2419 __ vpcmpgtb(xmm2, xmm0, xmm3, Assembler::AVX_256bit);
2420 __ vpsubusb(xmm1, xmm0, xmm4, Assembler::AVX_256bit);
2421 __ vpsubb(xmm1, xmm1, xmm2, Assembler::AVX_256bit);
2422
2423 // Load the proper lookup table
2424 __ lea(r11, ExternalAddress(StubRoutines::x86::base64_avx2_lut_addr()));
2425 __ movl(r15, isURL);
2426 __ shll(r15, 5);
2427 __ vmovdqu(xmm2, Address(r11, r15));
2428
2429 // Shuffle the offsets based on the range calculation done
2430 // above. This allows us to add the correct offset to the
2431 // 6-bit value corresponding to the range documented above.
2432 __ vpshufb(xmm1, xmm2, xmm1, Assembler::AVX_256bit);
2433 __ vpaddb(xmm0, xmm1, xmm0, Assembler::AVX_256bit);
2434
2435 // Store the encoded bytes
2436 __ vmovdqu(Address(dest, dp), xmm0);
2437 __ addl(dp, 32);
2438
2439 __ cmpl(length, 31);
2440 __ jcc(Assembler::belowEqual, L_process3);
2441
2442 __ align32();
2443 __ BIND(L_32byteLoop);
2444
2445 // Get next 32 bytes
2446 __ vmovdqu(xmm1, Address(source, start_offset, Address::times_1, -4));
2447
2448 __ subl(length, 24);
2449 __ addl(start_offset, 24);
2450
2451 // This logic is identical to the above, with only constant
2452 // register loads removed. Shuffle the input, mask off 6-bit
2453 // chunks, shift them into place, then add the offset to
2454 // encode.
2455 __ vpshufb(xmm1, xmm1, xmm9, Assembler::AVX_256bit);
2456
2457 __ vpand(xmm0, xmm8, xmm1, Assembler::AVX_256bit);
2458 __ vpmulhuw(xmm10, xmm0, xmm7, Assembler::AVX_256bit);
2459 __ vpand(xmm0, xmm6, xmm1, Assembler::AVX_256bit);
2460 __ vpmullw(xmm0, xmm5, xmm0, Assembler::AVX_256bit);
2461 __ vpor(xmm0, xmm0, xmm10, Assembler::AVX_256bit);
2462 __ vpcmpgtb(xmm10, xmm0, xmm3, Assembler::AVX_256bit);
2463 __ vpsubusb(xmm1, xmm0, xmm4, Assembler::AVX_256bit);
2464 __ vpsubb(xmm1, xmm1, xmm10, Assembler::AVX_256bit);
2465 __ vpshufb(xmm1, xmm2, xmm1, Assembler::AVX_256bit);
2466 __ vpaddb(xmm0, xmm1, xmm0, Assembler::AVX_256bit);
2467
2468 // Store the encoded bytes
2469 __ vmovdqu(Address(dest, dp), xmm0);
2470 __ addl(dp, 32);
2471
2472 __ cmpl(length, 31);
2473 __ jcc(Assembler::above, L_32byteLoop);
2474
2475 __ BIND(L_process3);
2476 __ vzeroupper();
2477 } else {
2478 __ BIND(L_process3);
2479 }
2480
2481 __ cmpl(length, 3);
2482 __ jcc(Assembler::below, L_exit);
2483
2484 // Load the encoding table based on isURL
2485 __ lea(r11, ExternalAddress(StubRoutines::x86::base64_encoding_table_addr()));
2486 __ movl(r15, isURL);
2487 __ shll(r15, 6);
2488 __ addptr(r11, r15);
2489
2490 __ BIND(L_processdata);
2491
2492 // Load 3 bytes
2493 __ load_unsigned_byte(r15, Address(source, start_offset));
2494 __ load_unsigned_byte(r10, Address(source, start_offset, Address::times_1, 1));
2495 __ load_unsigned_byte(r13, Address(source, start_offset, Address::times_1, 2));
2496
2497 // Build a 32-bit word with bytes 1, 2, 0, 1
2498 __ movl(rax, r10);
2499 __ shll(r10, 24);
2500 __ orl(rax, r10);
2501
2502 __ subl(length, 3);
2503
2504 __ shll(r15, 8);
2505 __ shll(r13, 16);
2506 __ orl(rax, r15);
2507
2508 __ addl(start_offset, 3);
2509
2510 __ orl(rax, r13);
2511 // At this point, rax contains | byte1 | byte2 | byte0 | byte1
2512 // r13 has byte2 << 16 - need low-order 6 bits to translate.
2513 // This translated byte is the fourth output byte.
2514 __ shrl(r13, 16);
2515 __ andl(r13, 0x3f);
2516
2517 // The high-order 6 bits of r15 (byte0) is translated.
2518 // The translated byte is the first output byte.
2519 __ shrl(r15, 10);
2520
2521 __ load_unsigned_byte(r13, Address(r11, r13));
2522 __ load_unsigned_byte(r15, Address(r11, r15));
2523
2524 __ movb(Address(dest, dp, Address::times_1, 3), r13);
2525
2526 // Extract high-order 4 bits of byte1 and low-order 2 bits of byte0.
2527 // This translated byte is the second output byte.
2528 __ shrl(rax, 4);
2529 __ movl(r10, rax);
2530 __ andl(rax, 0x3f);
2531
2532 __ movb(Address(dest, dp, Address::times_1, 0), r15);
2533
2534 __ load_unsigned_byte(rax, Address(r11, rax));
2535
2536 // Extract low-order 2 bits of byte1 and high-order 4 bits of byte2.
2537 // This translated byte is the third output byte.
2538 __ shrl(r10, 18);
2539 __ andl(r10, 0x3f);
2540
2541 __ load_unsigned_byte(r10, Address(r11, r10));
2542
2543 __ movb(Address(dest, dp, Address::times_1, 1), rax);
2544 __ movb(Address(dest, dp, Address::times_1, 2), r10);
2545
2546 __ addl(dp, 4);
2547 __ cmpl(length, 3);
2548 __ jcc(Assembler::aboveEqual, L_processdata);
2549
2550 __ BIND(L_exit);
2551 __ pop_ppx(r15);
2552 __ pop_ppx(r14);
2553 __ pop_ppx(r13);
2554 __ pop_ppx(r12);
2555 __ leave();
2556 __ ret(0);
2557
2558 // record the stub entry and end
2559 store_archive_data(stub_id, start, __ pc());
2560
2561 return start;
2562 }
2563
2564 // base64 AVX512vbmi tables
2565 address StubGenerator::base64_vbmi_lookup_lo_addr() {
2566 StubId stub_id = StubId::stubgen_lookup_lo_base64_id;
2567 int entry_count = StubInfo::entry_count(stub_id);
2568 assert(entry_count == 1, "sanity check");
2569 address start = load_archive_data(stub_id);
2570 if (start != nullptr) {
2571 return start;
2572 }
2573 __ align64();
2574 StubCodeMark mark(this, stub_id);
2575 start = __ pc();
2576
2577 assert(((unsigned long long)start & 0x3f) == 0,
2578 "Alignment problem (0x%08llx)", (unsigned long long)start);
2579 __ emit_data64(0x8080808080808080, relocInfo::none);
2580 __ emit_data64(0x8080808080808080, relocInfo::none);
2581 __ emit_data64(0x8080808080808080, relocInfo::none);
2582 __ emit_data64(0x8080808080808080, relocInfo::none);
2583 __ emit_data64(0x8080808080808080, relocInfo::none);
2584 __ emit_data64(0x3f8080803e808080, relocInfo::none);
2585 __ emit_data64(0x3b3a393837363534, relocInfo::none);
2586 __ emit_data64(0x8080808080803d3c, relocInfo::none);
2587
2588 // record the stub entry and end
2589 store_archive_data(stub_id, start, __ pc());
2590
2591 return start;
2592 }
2593
2594 address StubGenerator::base64_vbmi_lookup_hi_addr() {
2595 StubId stub_id = StubId::stubgen_lookup_hi_base64_id;
2596 int entry_count = StubInfo::entry_count(stub_id);
2597 assert(entry_count == 1, "sanity check");
2598 address start = load_archive_data(stub_id);
2599 if (start != nullptr) {
2600 return start;
2601 }
2602 __ align64();
2603 StubCodeMark mark(this, stub_id);
2604 start = __ pc();
2605
2606 assert(((unsigned long long)start & 0x3f) == 0,
2607 "Alignment problem (0x%08llx)", (unsigned long long)start);
2608 __ emit_data64(0x0605040302010080, relocInfo::none);
2609 __ emit_data64(0x0e0d0c0b0a090807, relocInfo::none);
2610 __ emit_data64(0x161514131211100f, relocInfo::none);
2611 __ emit_data64(0x8080808080191817, relocInfo::none);
2612 __ emit_data64(0x201f1e1d1c1b1a80, relocInfo::none);
2613 __ emit_data64(0x2827262524232221, relocInfo::none);
2614 __ emit_data64(0x302f2e2d2c2b2a29, relocInfo::none);
2615 __ emit_data64(0x8080808080333231, relocInfo::none);
2616
2617 // record the stub entry and end
2618 store_archive_data(stub_id, start, __ pc());
2619
2620 return start;
2621 }
2622 address StubGenerator::base64_vbmi_lookup_lo_url_addr() {
2623 StubId stub_id = StubId::stubgen_lookup_lo_base64url_id;
2624 int entry_count = StubInfo::entry_count(stub_id);
2625 assert(entry_count == 1, "sanity check");
2626 address start = load_archive_data(stub_id);
2627 if (start != nullptr) {
2628 return start;
2629 }
2630 __ align64();
2631 StubCodeMark mark(this, stub_id);
2632 start = __ pc();
2633
2634 assert(((unsigned long long)start & 0x3f) == 0,
2635 "Alignment problem (0x%08llx)", (unsigned long long)start);
2636 __ emit_data64(0x8080808080808080, relocInfo::none);
2637 __ emit_data64(0x8080808080808080, relocInfo::none);
2638 __ emit_data64(0x8080808080808080, relocInfo::none);
2639 __ emit_data64(0x8080808080808080, relocInfo::none);
2640 __ emit_data64(0x8080808080808080, relocInfo::none);
2641 __ emit_data64(0x80803e8080808080, relocInfo::none);
2642 __ emit_data64(0x3b3a393837363534, relocInfo::none);
2643 __ emit_data64(0x8080808080803d3c, relocInfo::none);
2644
2645 // record the stub entry and end
2646 store_archive_data(stub_id, start, __ pc());
2647
2648 return start;
2649 }
2650
2651 address StubGenerator::base64_vbmi_lookup_hi_url_addr() {
2652 StubId stub_id = StubId::stubgen_lookup_hi_base64url_id;
2653 int entry_count = StubInfo::entry_count(stub_id);
2654 assert(entry_count == 1, "sanity check");
2655 address start = load_archive_data(stub_id);
2656 if (start != nullptr) {
2657 return start;
2658 }
2659 __ align64();
2660 StubCodeMark mark(this, stub_id);
2661 start = __ pc();
2662
2663 assert(((unsigned long long)start & 0x3f) == 0,
2664 "Alignment problem (0x%08llx)", (unsigned long long)start);
2665 __ emit_data64(0x0605040302010080, relocInfo::none);
2666 __ emit_data64(0x0e0d0c0b0a090807, relocInfo::none);
2667 __ emit_data64(0x161514131211100f, relocInfo::none);
2668 __ emit_data64(0x3f80808080191817, relocInfo::none);
2669 __ emit_data64(0x201f1e1d1c1b1a80, relocInfo::none);
2670 __ emit_data64(0x2827262524232221, relocInfo::none);
2671 __ emit_data64(0x302f2e2d2c2b2a29, relocInfo::none);
2672 __ emit_data64(0x8080808080333231, relocInfo::none);
2673
2674 // record the stub entry and end
2675 store_archive_data(stub_id, start, __ pc());
2676
2677 return start;
2678 }
2679
2680 address StubGenerator::base64_vbmi_pack_vec_addr() {
2681 StubId stub_id = StubId::stubgen_pack_vec_base64_id;
2682 int entry_count = StubInfo::entry_count(stub_id);
2683 assert(entry_count == 1, "sanity check");
2684 address start = load_archive_data(stub_id);
2685 if (start != nullptr) {
2686 return start;
2687 }
2688 __ align64();
2689 StubCodeMark mark(this, stub_id);
2690 start = __ pc();
2691
2692 assert(((unsigned long long)start & 0x3f) == 0,
2693 "Alignment problem (0x%08llx)", (unsigned long long)start);
2694 __ emit_data64(0x090a040506000102, relocInfo::none);
2695 __ emit_data64(0x161011120c0d0e08, relocInfo::none);
2696 __ emit_data64(0x1c1d1e18191a1415, relocInfo::none);
2697 __ emit_data64(0x292a242526202122, relocInfo::none);
2698 __ emit_data64(0x363031322c2d2e28, relocInfo::none);
2699 __ emit_data64(0x3c3d3e38393a3435, relocInfo::none);
2700 __ emit_data64(0x0000000000000000, relocInfo::none);
2701 __ emit_data64(0x0000000000000000, relocInfo::none);
2702
2703 // record the stub entry and end
2704 store_archive_data(stub_id, start, __ pc());
2705
2706 return start;
2707 }
2708
2709 address StubGenerator::base64_vbmi_join_0_1_addr() {
2710 StubId stub_id = StubId::stubgen_join_0_1_base64_id;
2711 int entry_count = StubInfo::entry_count(stub_id);
2712 assert(entry_count == 1, "sanity check");
2713 address start = load_archive_data(stub_id);
2714 if (start != nullptr) {
2715 return start;
2716 }
2717 __ align64();
2718 StubCodeMark mark(this, stub_id);
2719 start = __ pc();
2720
2721 assert(((unsigned long long)start & 0x3f) == 0,
2722 "Alignment problem (0x%08llx)", (unsigned long long)start);
2723 __ emit_data64(0x090a040506000102, relocInfo::none);
2724 __ emit_data64(0x161011120c0d0e08, relocInfo::none);
2725 __ emit_data64(0x1c1d1e18191a1415, relocInfo::none);
2726 __ emit_data64(0x292a242526202122, relocInfo::none);
2727 __ emit_data64(0x363031322c2d2e28, relocInfo::none);
2728 __ emit_data64(0x3c3d3e38393a3435, relocInfo::none);
2729 __ emit_data64(0x494a444546404142, relocInfo::none);
2730 __ emit_data64(0x565051524c4d4e48, relocInfo::none);
2731
2732 // record the stub entry and end
2733 store_archive_data(stub_id, start, __ pc());
2734
2735 return start;
2736 }
2737
2738 address StubGenerator::base64_vbmi_join_1_2_addr() {
2739 StubId stub_id = StubId::stubgen_join_1_2_base64_id;
2740 int entry_count = StubInfo::entry_count(stub_id);
2741 assert(entry_count == 1, "sanity check");
2742 address start = load_archive_data(stub_id);
2743 if (start != nullptr) {
2744 return start;
2745 }
2746 __ align64();
2747 StubCodeMark mark(this, stub_id);
2748 start = __ pc();
2749
2750 assert(((unsigned long long)start & 0x3f) == 0,
2751 "Alignment problem (0x%08llx)", (unsigned long long)start);
2752 __ emit_data64(0x1c1d1e18191a1415, relocInfo::none);
2753 __ emit_data64(0x292a242526202122, relocInfo::none);
2754 __ emit_data64(0x363031322c2d2e28, relocInfo::none);
2755 __ emit_data64(0x3c3d3e38393a3435, relocInfo::none);
2756 __ emit_data64(0x494a444546404142, relocInfo::none);
2757 __ emit_data64(0x565051524c4d4e48, relocInfo::none);
2758 __ emit_data64(0x5c5d5e58595a5455, relocInfo::none);
2759 __ emit_data64(0x696a646566606162, relocInfo::none);
2760
2761 // record the stub entry and end
2762 store_archive_data(stub_id, start, __ pc());
2763
2764 return start;
2765 }
2766
2767 address StubGenerator::base64_vbmi_join_2_3_addr() {
2768 StubId stub_id = StubId::stubgen_join_2_3_base64_id;
2769 int entry_count = StubInfo::entry_count(stub_id);
2770 assert(entry_count == 1, "sanity check");
2771 address start = load_archive_data(stub_id);
2772 if (start != nullptr) {
2773 return start;
2774 }
2775 __ align64();
2776 StubCodeMark mark(this, stub_id);
2777 start = __ pc();
2778
2779 assert(((unsigned long long)start & 0x3f) == 0,
2780 "Alignment problem (0x%08llx)", (unsigned long long)start);
2781 __ emit_data64(0x363031322c2d2e28, relocInfo::none);
2782 __ emit_data64(0x3c3d3e38393a3435, relocInfo::none);
2783 __ emit_data64(0x494a444546404142, relocInfo::none);
2784 __ emit_data64(0x565051524c4d4e48, relocInfo::none);
2785 __ emit_data64(0x5c5d5e58595a5455, relocInfo::none);
2786 __ emit_data64(0x696a646566606162, relocInfo::none);
2787 __ emit_data64(0x767071726c6d6e68, relocInfo::none);
2788 __ emit_data64(0x7c7d7e78797a7475, relocInfo::none);
2789
2790 // record the stub entry and end
2791 store_archive_data(stub_id, start, __ pc());
2792
2793 return start;
2794 }
2795
2796 address StubGenerator::base64_AVX2_decode_tables_addr() {
2797 StubId stub_id = StubId::stubgen_avx2_decode_tables_base64_id;
2798 int entry_count = StubInfo::entry_count(stub_id);
2799 assert(entry_count == 1, "sanity check");
2800 address start = load_archive_data(stub_id);
2801 if (start != nullptr) {
2802 return start;
2803 }
2804 __ align64();
2805 StubCodeMark mark(this, stub_id);
2806 start = __ pc();
2807
2808 assert(((unsigned long long)start & 0x3f) == 0,
2809 "Alignment problem (0x%08llx)", (unsigned long long)start);
2810 __ emit_data(0x2f2f2f2f, relocInfo::none, 0);
2811 __ emit_data(0x5f5f5f5f, relocInfo::none, 0); // for URL
2812
2813 __ emit_data(0xffffffff, relocInfo::none, 0);
2814 __ emit_data(0xfcfcfcfc, relocInfo::none, 0); // for URL
2815
2816 // Permute table
2817 __ emit_data64(0x0000000100000000, relocInfo::none);
2818 __ emit_data64(0x0000000400000002, relocInfo::none);
2819 __ emit_data64(0x0000000600000005, relocInfo::none);
2820 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2821
2822 // Shuffle table
2823 __ emit_data64(0x090a040506000102, relocInfo::none);
2824 __ emit_data64(0xffffffff0c0d0e08, relocInfo::none);
2825 __ emit_data64(0x090a040506000102, relocInfo::none);
2826 __ emit_data64(0xffffffff0c0d0e08, relocInfo::none);
2827
2828 // merge table
2829 __ emit_data(0x01400140, relocInfo::none, 0);
2830
2831 // merge multiplier
2832 __ emit_data(0x00011000, relocInfo::none, 0);
2833
2834 // record the stub entry and end
2835 store_archive_data(stub_id, start, __ pc());
2836
2837 return start;
2838 }
2839
2840 address StubGenerator::base64_AVX2_decode_LUT_tables_addr() {
2841 StubId stub_id = StubId::stubgen_avx2_decode_lut_tables_base64_id;
2842 int entry_count = StubInfo::entry_count(stub_id);
2843 assert(entry_count == 1, "sanity check");
2844 address start = load_archive_data(stub_id);
2845 if (start != nullptr) {
2846 return start;
2847 }
2848 __ align64();
2849 StubCodeMark mark(this, stub_id);
2850 start = __ pc();
2851
2852 assert(((unsigned long long)start & 0x3f) == 0,
2853 "Alignment problem (0x%08llx)", (unsigned long long)start);
2854 // lut_lo
2855 __ emit_data64(0x1111111111111115, relocInfo::none);
2856 __ emit_data64(0x1a1b1b1b1a131111, relocInfo::none);
2857 __ emit_data64(0x1111111111111115, relocInfo::none);
2858 __ emit_data64(0x1a1b1b1b1a131111, relocInfo::none);
2859
2860 // lut_roll
2861 __ emit_data64(0xb9b9bfbf04131000, relocInfo::none);
2862 __ emit_data64(0x0000000000000000, relocInfo::none);
2863 __ emit_data64(0xb9b9bfbf04131000, relocInfo::none);
2864 __ emit_data64(0x0000000000000000, relocInfo::none);
2865
2866 // lut_lo URL
2867 __ emit_data64(0x1111111111111115, relocInfo::none);
2868 __ emit_data64(0x1b1b1a1b1b131111, relocInfo::none);
2869 __ emit_data64(0x1111111111111115, relocInfo::none);
2870 __ emit_data64(0x1b1b1a1b1b131111, relocInfo::none);
2871
2872 // lut_roll URL
2873 __ emit_data64(0xb9b9bfbf0411e000, relocInfo::none);
2874 __ emit_data64(0x0000000000000000, relocInfo::none);
2875 __ emit_data64(0xb9b9bfbf0411e000, relocInfo::none);
2876 __ emit_data64(0x0000000000000000, relocInfo::none);
2877
2878 // lut_hi
2879 __ emit_data64(0x0804080402011010, relocInfo::none);
2880 __ emit_data64(0x1010101010101010, relocInfo::none);
2881 __ emit_data64(0x0804080402011010, relocInfo::none);
2882 __ emit_data64(0x1010101010101010, relocInfo::none);
2883
2884 // record the stub entry and end
2885 store_archive_data(stub_id, start, __ pc());
2886
2887 return start;
2888 }
2889
2890 address StubGenerator::base64_decoding_table_addr() {
2891 StubId stub_id = StubId::stubgen_decoding_table_base64_id;
2892 int entry_count = StubInfo::entry_count(stub_id);
2893 assert(entry_count == 1, "sanity check");
2894 address start = load_archive_data(stub_id);
2895 if (start != nullptr) {
2896 return start;
2897 }
2898 StubCodeMark mark(this, stub_id);
2899 start = __ pc();
2900
2901 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2902 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2903 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2904 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2905 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2906 __ emit_data64(0x3fffffff3effffff, relocInfo::none);
2907 __ emit_data64(0x3b3a393837363534, relocInfo::none);
2908 __ emit_data64(0xffffffffffff3d3c, relocInfo::none);
2909 __ emit_data64(0x06050403020100ff, relocInfo::none);
2910 __ emit_data64(0x0e0d0c0b0a090807, relocInfo::none);
2911 __ emit_data64(0x161514131211100f, relocInfo::none);
2912 __ emit_data64(0xffffffffff191817, relocInfo::none);
2913 __ emit_data64(0x201f1e1d1c1b1aff, relocInfo::none);
2914 __ emit_data64(0x2827262524232221, relocInfo::none);
2915 __ emit_data64(0x302f2e2d2c2b2a29, relocInfo::none);
2916 __ emit_data64(0xffffffffff333231, relocInfo::none);
2917 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2918 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2919 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2920 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2921 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2922 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2923 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2924 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2925 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2926 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2927 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2928 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2929 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2930 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2931 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2932 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2933
2934 // URL table
2935 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2936 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2937 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2938 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2939 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2940 __ emit_data64(0xffff3effffffffff, relocInfo::none);
2941 __ emit_data64(0x3b3a393837363534, relocInfo::none);
2942 __ emit_data64(0xffffffffffff3d3c, relocInfo::none);
2943 __ emit_data64(0x06050403020100ff, relocInfo::none);
2944 __ emit_data64(0x0e0d0c0b0a090807, relocInfo::none);
2945 __ emit_data64(0x161514131211100f, relocInfo::none);
2946 __ emit_data64(0x3fffffffff191817, relocInfo::none);
2947 __ emit_data64(0x201f1e1d1c1b1aff, relocInfo::none);
2948 __ emit_data64(0x2827262524232221, relocInfo::none);
2949 __ emit_data64(0x302f2e2d2c2b2a29, relocInfo::none);
2950 __ emit_data64(0xffffffffff333231, relocInfo::none);
2951 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2952 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2953 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2954 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2955 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2956 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2957 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2958 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2959 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2960 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2961 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2962 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2963 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2964 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2965 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2966 __ emit_data64(0xffffffffffffffff, relocInfo::none);
2967
2968 // record the stub entry and end
2969 store_archive_data(stub_id, start, __ pc());
2970
2971 return start;
2972 }
2973
2974
2975 // Code for generating Base64 decoding.
2976 //
2977 // Based on the article (and associated code) from https://arxiv.org/abs/1910.05109.
2978 //
2979 // Intrinsic function prototype in Base64.java:
2980 // private void decodeBlock(byte[] src, int sp, int sl, byte[] dst, int dp, boolean isURL, isMIME) {
2981 address StubGenerator::generate_base64_decodeBlock() {
2982 StubId stub_id = StubId::stubgen_base64_decodeBlock_id;
2983 int entry_count = StubInfo::entry_count(stub_id);
2984 assert(entry_count == 1, "sanity check");
2985 address start = load_archive_data(stub_id);
2986 if (start != nullptr) {
2987 return start;
2988 }
2989 __ align(CodeEntryAlignment);
2990 StubCodeMark mark(this, stub_id);
2991 start = __ pc();
2992
2993 __ enter();
2994
2995 // Save callee-saved registers before using them
2996 __ push_ppx(r12);
2997 __ push_ppx(r13);
2998 __ push_ppx(r14);
2999 __ push_ppx(r15);
3000 __ push_ppx(rbx);
3001
3002 // arguments
3003 const Register source = c_rarg0; // Source Array
3004 const Register start_offset = c_rarg1; // start offset
3005 const Register end_offset = c_rarg2; // end offset
3006 const Register dest = c_rarg3; // destination array
3007 const Register isMIME = rbx;
3008
3009 #ifndef _WIN64
3010 const Register dp = c_rarg4; // Position for writing to dest array
3011 const Register isURL = c_rarg5;// Base64 or URL character set
3012 __ movl(isMIME, Address(rbp, 2 * wordSize));
3013 #else
3014 const Address dp_mem(rbp, 6 * wordSize); // length is on stack on Win64
3015 const Address isURL_mem(rbp, 7 * wordSize);
3016 const Register isURL = r10; // pick the volatile windows register
3017 const Register dp = r12;
3018 __ movl(dp, dp_mem);
3019 __ movl(isURL, isURL_mem);
3020 __ movl(isMIME, Address(rbp, 8 * wordSize));
3021 #endif
3022
3023 const XMMRegister lookup_lo = xmm5;
3024 const XMMRegister lookup_hi = xmm6;
3025 const XMMRegister errorvec = xmm7;
3026 const XMMRegister pack16_op = xmm9;
3027 const XMMRegister pack32_op = xmm8;
3028 const XMMRegister input0 = xmm3;
3029 const XMMRegister input1 = xmm20;
3030 const XMMRegister input2 = xmm21;
3031 const XMMRegister input3 = xmm19;
3032 const XMMRegister join01 = xmm12;
3033 const XMMRegister join12 = xmm11;
3034 const XMMRegister join23 = xmm10;
3035 const XMMRegister translated0 = xmm2;
3036 const XMMRegister translated1 = xmm1;
3037 const XMMRegister translated2 = xmm0;
3038 const XMMRegister translated3 = xmm4;
3039
3040 const XMMRegister merged0 = xmm2;
3041 const XMMRegister merged1 = xmm1;
3042 const XMMRegister merged2 = xmm0;
3043 const XMMRegister merged3 = xmm4;
3044 const XMMRegister merge_ab_bc0 = xmm2;
3045 const XMMRegister merge_ab_bc1 = xmm1;
3046 const XMMRegister merge_ab_bc2 = xmm0;
3047 const XMMRegister merge_ab_bc3 = xmm4;
3048
3049 const XMMRegister pack24bits = xmm4;
3050
3051 const Register length = r14;
3052 const Register output_size = r13;
3053 const Register output_mask = r15;
3054 const KRegister input_mask = k1;
3055
3056 const XMMRegister input_initial_valid_b64 = xmm0;
3057 const XMMRegister tmp = xmm10;
3058 const XMMRegister mask = xmm0;
3059 const XMMRegister invalid_b64 = xmm1;
3060
3061 Label L_process256, L_process64, L_process64Loop, L_exit, L_processdata, L_loadURL;
3062 Label L_continue, L_finalBit, L_padding, L_donePadding, L_bruteForce;
3063 Label L_forceLoop, L_bottomLoop, L_checkMIME, L_exit_no_vzero, L_lastChunk;
3064
3065 // calculate length from offsets
3066 __ movl(length, end_offset);
3067 __ subl(length, start_offset);
3068 __ push_ppx(dest); // Save for return value calc
3069
3070 // If AVX512 VBMI not supported, just compile non-AVX code
3071 if(VM_Version::supports_avx512_vbmi() &&
3072 VM_Version::supports_avx512bw()) {
3073 __ cmpl(length, 31); // 32-bytes is break-even for AVX-512
3074 __ jcc(Assembler::lessEqual, L_lastChunk);
3075
3076 __ cmpl(isMIME, 0);
3077 __ jcc(Assembler::notEqual, L_lastChunk);
3078
3079 // Load lookup tables based on isURL
3080 __ cmpl(isURL, 0);
3081 __ jcc(Assembler::notZero, L_loadURL);
3082
3083 __ evmovdquq(lookup_lo, ExternalAddress(StubRoutines::x86::base64_vbmi_lookup_lo_addr()), Assembler::AVX_512bit, r13);
3084 __ evmovdquq(lookup_hi, ExternalAddress(StubRoutines::x86::base64_vbmi_lookup_hi_addr()), Assembler::AVX_512bit, r13);
3085
3086 __ BIND(L_continue);
3087
3088 __ movl(r15, 0x01400140);
3089 __ evpbroadcastd(pack16_op, r15, Assembler::AVX_512bit);
3090
3091 __ movl(r15, 0x00011000);
3092 __ evpbroadcastd(pack32_op, r15, Assembler::AVX_512bit);
3093
3094 __ cmpl(length, 0xff);
3095 __ jcc(Assembler::lessEqual, L_process64);
3096
3097 // load masks required for decoding data
3098 __ BIND(L_processdata);
3099 __ evmovdquq(join01, ExternalAddress(StubRoutines::x86::base64_vbmi_join_0_1_addr()), Assembler::AVX_512bit,r13);
3100 __ evmovdquq(join12, ExternalAddress(StubRoutines::x86::base64_vbmi_join_1_2_addr()), Assembler::AVX_512bit, r13);
3101 __ evmovdquq(join23, ExternalAddress(StubRoutines::x86::base64_vbmi_join_2_3_addr()), Assembler::AVX_512bit, r13);
3102
3103 __ align32();
3104 __ BIND(L_process256);
3105 // Grab input data
3106 __ evmovdquq(input0, Address(source, start_offset, Address::times_1, 0x00), Assembler::AVX_512bit);
3107 __ evmovdquq(input1, Address(source, start_offset, Address::times_1, 0x40), Assembler::AVX_512bit);
3108 __ evmovdquq(input2, Address(source, start_offset, Address::times_1, 0x80), Assembler::AVX_512bit);
3109 __ evmovdquq(input3, Address(source, start_offset, Address::times_1, 0xc0), Assembler::AVX_512bit);
3110
3111 // Copy the low part of the lookup table into the destination of the permutation
3112 __ evmovdquq(translated0, lookup_lo, Assembler::AVX_512bit);
3113 __ evmovdquq(translated1, lookup_lo, Assembler::AVX_512bit);
3114 __ evmovdquq(translated2, lookup_lo, Assembler::AVX_512bit);
3115 __ evmovdquq(translated3, lookup_lo, Assembler::AVX_512bit);
3116
3117 // Translate the base64 input into "decoded" bytes
3118 __ evpermt2b(translated0, input0, lookup_hi, Assembler::AVX_512bit);
3119 __ evpermt2b(translated1, input1, lookup_hi, Assembler::AVX_512bit);
3120 __ evpermt2b(translated2, input2, lookup_hi, Assembler::AVX_512bit);
3121 __ evpermt2b(translated3, input3, lookup_hi, Assembler::AVX_512bit);
3122
3123 // OR all of the translations together to check for errors (high-order bit of byte set)
3124 __ vpternlogd(input0, 0xfe, input1, input2, Assembler::AVX_512bit);
3125
3126 __ vpternlogd(input3, 0xfe, translated0, translated1, Assembler::AVX_512bit);
3127 __ vpternlogd(input0, 0xfe, translated2, translated3, Assembler::AVX_512bit);
3128 __ vpor(errorvec, input3, input0, Assembler::AVX_512bit);
3129
3130 // Check if there was an error - if so, try 64-byte chunks
3131 __ evpmovb2m(k3, errorvec, Assembler::AVX_512bit);
3132 __ kortestql(k3, k3);
3133 __ jcc(Assembler::notZero, L_process64);
3134
3135 // The merging and shuffling happens here
3136 // We multiply each byte pair [00dddddd | 00cccccc | 00bbbbbb | 00aaaaaa]
3137 // Multiply [00cccccc] by 2^6 added to [00dddddd] to get [0000cccc | ccdddddd]
3138 // The pack16_op is a vector of 0x01400140, so multiply D by 1 and C by 0x40
3139 __ vpmaddubsw(merge_ab_bc0, translated0, pack16_op, Assembler::AVX_512bit);
3140 __ vpmaddubsw(merge_ab_bc1, translated1, pack16_op, Assembler::AVX_512bit);
3141 __ vpmaddubsw(merge_ab_bc2, translated2, pack16_op, Assembler::AVX_512bit);
3142 __ vpmaddubsw(merge_ab_bc3, translated3, pack16_op, Assembler::AVX_512bit);
3143
3144 // Now do the same with packed 16-bit values.
3145 // We start with [0000cccc | ccdddddd | 0000aaaa | aabbbbbb]
3146 // pack32_op is 0x00011000 (2^12, 1), so this multiplies [0000aaaa | aabbbbbb] by 2^12
3147 // and adds [0000cccc | ccdddddd] to yield [00000000 | aaaaaabb | bbbbcccc | ccdddddd]
3148 __ vpmaddwd(merged0, merge_ab_bc0, pack32_op, Assembler::AVX_512bit);
3149 __ vpmaddwd(merged1, merge_ab_bc1, pack32_op, Assembler::AVX_512bit);
3150 __ vpmaddwd(merged2, merge_ab_bc2, pack32_op, Assembler::AVX_512bit);
3151 __ vpmaddwd(merged3, merge_ab_bc3, pack32_op, Assembler::AVX_512bit);
3152
3153 // The join vectors specify which byte from which vector goes into the outputs
3154 // One of every 4 bytes in the extended vector is zero, so we pack them into their
3155 // final positions in the register for storing (256 bytes in, 192 bytes out)
3156 __ evpermt2b(merged0, join01, merged1, Assembler::AVX_512bit);
3157 __ evpermt2b(merged1, join12, merged2, Assembler::AVX_512bit);
3158 __ evpermt2b(merged2, join23, merged3, Assembler::AVX_512bit);
3159
3160 // Store result
3161 __ evmovdquq(Address(dest, dp, Address::times_1, 0x00), merged0, Assembler::AVX_512bit);
3162 __ evmovdquq(Address(dest, dp, Address::times_1, 0x40), merged1, Assembler::AVX_512bit);
3163 __ evmovdquq(Address(dest, dp, Address::times_1, 0x80), merged2, Assembler::AVX_512bit);
3164
3165 __ addptr(source, 0x100);
3166 __ addptr(dest, 0xc0);
3167 __ subl(length, 0x100);
3168 __ cmpl(length, 64 * 4);
3169 __ jcc(Assembler::greaterEqual, L_process256);
3170
3171 // At this point, we've decoded 64 * 4 * n bytes.
3172 // The remaining length will be <= 64 * 4 - 1.
3173 // UNLESS there was an error decoding the first 256-byte chunk. In this
3174 // case, the length will be arbitrarily long.
3175 //
3176 // Note that this will be the path for MIME-encoded strings.
3177
3178 __ BIND(L_process64);
3179
3180 __ evmovdquq(pack24bits, ExternalAddress(StubRoutines::x86::base64_vbmi_pack_vec_addr()), Assembler::AVX_512bit, r13);
3181
3182 __ cmpl(length, 63);
3183 __ jcc(Assembler::lessEqual, L_finalBit);
3184
3185 __ mov64(rax, 0x0000ffffffffffff);
3186 __ kmovql(k2, rax);
3187
3188 __ align32();
3189 __ BIND(L_process64Loop);
3190
3191 // Handle first 64-byte block
3192
3193 __ evmovdquq(input0, Address(source, start_offset), Assembler::AVX_512bit);
3194 __ evmovdquq(translated0, lookup_lo, Assembler::AVX_512bit);
3195 __ evpermt2b(translated0, input0, lookup_hi, Assembler::AVX_512bit);
3196
3197 __ vpor(errorvec, translated0, input0, Assembler::AVX_512bit);
3198
3199 // Check for error and bomb out before updating dest
3200 __ evpmovb2m(k3, errorvec, Assembler::AVX_512bit);
3201 __ kortestql(k3, k3);
3202 __ jcc(Assembler::notZero, L_exit);
3203
3204 // Pack output register, selecting correct byte ordering
3205 __ vpmaddubsw(merge_ab_bc0, translated0, pack16_op, Assembler::AVX_512bit);
3206 __ vpmaddwd(merged0, merge_ab_bc0, pack32_op, Assembler::AVX_512bit);
3207 __ vpermb(merged0, pack24bits, merged0, Assembler::AVX_512bit);
3208
3209 __ evmovdqub(Address(dest, dp), k2, merged0, true, Assembler::AVX_512bit);
3210
3211 __ subl(length, 64);
3212 __ addptr(source, 64);
3213 __ addptr(dest, 48);
3214
3215 __ cmpl(length, 64);
3216 __ jcc(Assembler::greaterEqual, L_process64Loop);
3217
3218 __ cmpl(length, 0);
3219 __ jcc(Assembler::lessEqual, L_exit);
3220
3221 __ BIND(L_finalBit);
3222 // Now have 1 to 63 bytes left to decode
3223
3224 // I was going to let Java take care of the final fragment
3225 // however it will repeatedly call this routine for every 4 bytes
3226 // of input data, so handle the rest here.
3227 __ movq(rax, -1);
3228 __ bzhiq(rax, rax, length); // Input mask in rax
3229
3230 __ movl(output_size, length);
3231 __ shrl(output_size, 2); // Find (len / 4) * 3 (output length)
3232 __ lea(output_size, Address(output_size, output_size, Address::times_2, 0));
3233 // output_size in r13
3234
3235 // Strip pad characters, if any, and adjust length and mask
3236 __ addq(length, start_offset);
3237 __ cmpb(Address(source, length, Address::times_1, -1), '=');
3238 __ jcc(Assembler::equal, L_padding);
3239
3240 __ BIND(L_donePadding);
3241 __ subq(length, start_offset);
3242
3243 // Output size is (64 - output_size), output mask is (all 1s >> output_size).
3244 __ kmovql(input_mask, rax);
3245 __ movq(output_mask, -1);
3246 __ bzhiq(output_mask, output_mask, output_size);
3247
3248 // Load initial input with all valid base64 characters. Will be used
3249 // in merging source bytes to avoid masking when determining if an error occurred.
3250 __ movl(rax, 0x61616161);
3251 __ evpbroadcastd(input_initial_valid_b64, rax, Assembler::AVX_512bit);
3252
3253 // A register containing all invalid base64 decoded values
3254 __ movl(rax, 0x80808080);
3255 __ evpbroadcastd(invalid_b64, rax, Assembler::AVX_512bit);
3256
3257 // input_mask is in k1
3258 // output_size is in r13
3259 // output_mask is in r15
3260 // zmm0 - free
3261 // zmm1 - 0x00011000
3262 // zmm2 - 0x01400140
3263 // zmm3 - errorvec
3264 // zmm4 - pack vector
3265 // zmm5 - lookup_lo
3266 // zmm6 - lookup_hi
3267 // zmm7 - errorvec
3268 // zmm8 - 0x61616161
3269 // zmm9 - 0x80808080
3270
3271 // Load only the bytes from source, merging into our "fully-valid" register
3272 __ evmovdqub(input_initial_valid_b64, input_mask, Address(source, start_offset, Address::times_1, 0x0), true, Assembler::AVX_512bit);
3273
3274 // Decode all bytes within our merged input
3275 __ evmovdquq(tmp, lookup_lo, Assembler::AVX_512bit);
3276 __ evpermt2b(tmp, input_initial_valid_b64, lookup_hi, Assembler::AVX_512bit);
3277 __ evporq(mask, tmp, input_initial_valid_b64, Assembler::AVX_512bit);
3278
3279 // Check for error. Compare (decoded | initial) to all invalid.
3280 // If any bytes have their high-order bit set, then we have an error.
3281 __ evptestmb(k2, mask, invalid_b64, Assembler::AVX_512bit);
3282 __ kortestql(k2, k2);
3283
3284 // If we have an error, use the brute force loop to decode what we can (4-byte chunks).
3285 __ jcc(Assembler::notZero, L_bruteForce);
3286
3287 // Shuffle output bytes
3288 __ vpmaddubsw(tmp, tmp, pack16_op, Assembler::AVX_512bit);
3289 __ vpmaddwd(tmp, tmp, pack32_op, Assembler::AVX_512bit);
3290
3291 __ vpermb(tmp, pack24bits, tmp, Assembler::AVX_512bit);
3292 __ kmovql(k1, output_mask);
3293 __ evmovdqub(Address(dest, dp), k1, tmp, true, Assembler::AVX_512bit);
3294
3295 __ addptr(dest, output_size);
3296
3297 __ BIND(L_exit);
3298 __ vzeroupper();
3299 __ pop_ppx(rax); // Get original dest value
3300 __ subptr(dest, rax); // Number of bytes converted
3301 __ movptr(rax, dest);
3302 __ pop_ppx(rbx);
3303 __ pop_ppx(r15);
3304 __ pop_ppx(r14);
3305 __ pop_ppx(r13);
3306 __ pop_ppx(r12);
3307 __ leave();
3308 __ ret(0);
3309
3310 __ BIND(L_loadURL);
3311 __ evmovdquq(lookup_lo, ExternalAddress(StubRoutines::x86::base64_vbmi_lookup_lo_url_addr()), Assembler::AVX_512bit, r13);
3312 __ evmovdquq(lookup_hi, ExternalAddress(StubRoutines::x86::base64_vbmi_lookup_hi_url_addr()), Assembler::AVX_512bit, r13);
3313 __ jmp(L_continue);
3314
3315 __ BIND(L_padding);
3316 __ decrementq(output_size, 1);
3317 __ shrq(rax, 1);
3318
3319 __ cmpb(Address(source, length, Address::times_1, -2), '=');
3320 __ jcc(Assembler::notEqual, L_donePadding);
3321
3322 __ decrementq(output_size, 1);
3323 __ shrq(rax, 1);
3324 __ jmp(L_donePadding);
3325
3326 __ align32();
3327 __ BIND(L_bruteForce);
3328 } // End of if(avx512_vbmi)
3329
3330 if (VM_Version::supports_avx2()) {
3331 Label L_tailProc, L_topLoop, L_enterLoop;
3332
3333 __ cmpl(isMIME, 0);
3334 __ jcc(Assembler::notEqual, L_lastChunk);
3335
3336 // Check for buffer too small (for algorithm)
3337 __ subl(length, 0x2c);
3338 __ jcc(Assembler::less, L_tailProc);
3339
3340 __ shll(isURL, 2);
3341
3342 // Algorithm adapted from https://arxiv.org/abs/1704.00605, "Faster Base64
3343 // Encoding and Decoding using AVX2 Instructions". URL modifications added.
3344
3345 // Set up constants
3346 __ lea(r13, ExternalAddress(StubRoutines::x86::base64_AVX2_decode_tables_addr()));
3347 __ vpbroadcastd(xmm4, Address(r13, isURL, Address::times_1), Assembler::AVX_256bit); // 2F or 5F
3348 __ vpbroadcastd(xmm10, Address(r13, isURL, Address::times_1, 0x08), Assembler::AVX_256bit); // -1 or -4
3349 __ vmovdqu(xmm12, Address(r13, 0x10)); // permute
3350 __ vmovdqu(xmm13, Address(r13, 0x30)); // shuffle
3351 __ vpbroadcastd(xmm7, Address(r13, 0x50), Assembler::AVX_256bit); // merge
3352 __ vpbroadcastd(xmm6, Address(r13, 0x54), Assembler::AVX_256bit); // merge mult
3353
3354 __ lea(r13, ExternalAddress(StubRoutines::x86::base64_AVX2_decode_LUT_tables_addr()));
3355 __ shll(isURL, 4);
3356 __ vmovdqu(xmm11, Address(r13, isURL, Address::times_1, 0x00)); // lut_lo
3357 __ vmovdqu(xmm8, Address(r13, isURL, Address::times_1, 0x20)); // lut_roll
3358 __ shrl(isURL, 6); // restore isURL
3359 __ vmovdqu(xmm9, Address(r13, 0x80)); // lut_hi
3360 __ jmp(L_enterLoop);
3361
3362 __ align32();
3363 __ bind(L_topLoop);
3364 // Add in the offset value (roll) to get 6-bit out values
3365 __ vpaddb(xmm0, xmm0, xmm2, Assembler::AVX_256bit);
3366 // Merge and permute the output bits into appropriate output byte lanes
3367 __ vpmaddubsw(xmm0, xmm0, xmm7, Assembler::AVX_256bit);
3368 __ vpmaddwd(xmm0, xmm0, xmm6, Assembler::AVX_256bit);
3369 __ vpshufb(xmm0, xmm0, xmm13, Assembler::AVX_256bit);
3370 __ vpermd(xmm0, xmm12, xmm0, Assembler::AVX_256bit);
3371 // Store the output bytes
3372 __ vmovdqu(Address(dest, dp, Address::times_1, 0), xmm0);
3373 __ addptr(source, 0x20);
3374 __ addptr(dest, 0x18);
3375 __ subl(length, 0x20);
3376 __ jcc(Assembler::less, L_tailProc);
3377
3378 __ bind(L_enterLoop);
3379
3380 // Load in encoded string (32 bytes)
3381 __ vmovdqu(xmm2, Address(source, start_offset, Address::times_1, 0x0));
3382 // Extract the high nibble for indexing into the lut tables. High 4 bits are don't care.
3383 __ vpsrld(xmm1, xmm2, 0x4, Assembler::AVX_256bit);
3384 __ vpand(xmm1, xmm4, xmm1, Assembler::AVX_256bit);
3385 // Extract the low nibble. 5F/2F will isolate the low-order 4 bits. High 4 bits are don't care.
3386 __ vpand(xmm3, xmm2, xmm4, Assembler::AVX_256bit);
3387 // Check for special-case (0x2F or 0x5F (URL))
3388 __ vpcmpeqb(xmm0, xmm4, xmm2, Assembler::AVX_256bit);
3389 // Get the bitset based on the low nibble. vpshufb uses low-order 4 bits only.
3390 __ vpshufb(xmm3, xmm11, xmm3, Assembler::AVX_256bit);
3391 // Get the bit value of the high nibble
3392 __ vpshufb(xmm5, xmm9, xmm1, Assembler::AVX_256bit);
3393 // Make sure 2F / 5F shows as valid
3394 __ vpandn(xmm3, xmm0, xmm3, Assembler::AVX_256bit);
3395 // Make adjustment for roll index. For non-URL, this is a no-op,
3396 // for URL, this adjusts by -4. This is to properly index the
3397 // roll value for 2F / 5F.
3398 __ vpand(xmm0, xmm0, xmm10, Assembler::AVX_256bit);
3399 // If the and of the two is non-zero, we have an invalid input character
3400 __ vptest(xmm3, xmm5);
3401 // Extract the "roll" value - value to add to the input to get 6-bit out value
3402 __ vpaddb(xmm0, xmm0, xmm1, Assembler::AVX_256bit); // Handle 2F / 5F
3403 __ vpshufb(xmm0, xmm8, xmm0, Assembler::AVX_256bit);
3404 __ jcc(Assembler::equal, L_topLoop); // Fall through on error
3405
3406 __ bind(L_tailProc);
3407
3408 __ addl(length, 0x2c);
3409
3410 __ vzeroupper();
3411 }
3412
3413 // Use non-AVX code to decode 4-byte chunks into 3 bytes of output
3414
3415 // Register state (Linux):
3416 // r12-15 - saved on stack
3417 // rdi - src
3418 // rsi - sp
3419 // rdx - sl
3420 // rcx - dst
3421 // r8 - dp
3422 // r9 - isURL
3423
3424 // Register state (Windows):
3425 // r12-15 - saved on stack
3426 // rcx - src
3427 // rdx - sp
3428 // r8 - sl
3429 // r9 - dst
3430 // r12 - dp
3431 // r10 - isURL
3432
3433 // Registers (common):
3434 // length (r14) - bytes in src
3435
3436 const Register decode_table = r11;
3437 const Register out_byte_count = rbx;
3438 const Register byte1 = r13;
3439 const Register byte2 = r15;
3440 const Register byte3 = WIN64_ONLY(r8) NOT_WIN64(rdx);
3441 const Register byte4 = WIN64_ONLY(r10) NOT_WIN64(r9);
3442
3443 __ bind(L_lastChunk);
3444
3445 __ shrl(length, 2); // Multiple of 4 bytes only - length is # 4-byte chunks
3446 __ cmpl(length, 0);
3447 __ jcc(Assembler::lessEqual, L_exit_no_vzero);
3448
3449 __ shll(isURL, 8); // index into decode table based on isURL
3450 __ lea(decode_table, ExternalAddress(StubRoutines::x86::base64_decoding_table_addr()));
3451 __ addptr(decode_table, isURL);
3452
3453 __ jmp(L_bottomLoop);
3454
3455 __ align32();
3456 __ BIND(L_forceLoop);
3457 __ shll(byte1, 18);
3458 __ shll(byte2, 12);
3459 __ shll(byte3, 6);
3460 __ orl(byte1, byte2);
3461 __ orl(byte1, byte3);
3462 __ orl(byte1, byte4);
3463
3464 __ addptr(source, 4);
3465
3466 __ movb(Address(dest, dp, Address::times_1, 2), byte1);
3467 __ shrl(byte1, 8);
3468 __ movb(Address(dest, dp, Address::times_1, 1), byte1);
3469 __ shrl(byte1, 8);
3470 __ movb(Address(dest, dp, Address::times_1, 0), byte1);
3471
3472 __ addptr(dest, 3);
3473 __ decrementl(length, 1);
3474 __ jcc(Assembler::zero, L_exit_no_vzero);
3475
3476 __ BIND(L_bottomLoop);
3477 __ load_unsigned_byte(byte1, Address(source, start_offset, Address::times_1, 0x00));
3478 __ load_unsigned_byte(byte2, Address(source, start_offset, Address::times_1, 0x01));
3479 __ load_signed_byte(byte1, Address(decode_table, byte1));
3480 __ load_signed_byte(byte2, Address(decode_table, byte2));
3481 __ load_unsigned_byte(byte3, Address(source, start_offset, Address::times_1, 0x02));
3482 __ load_unsigned_byte(byte4, Address(source, start_offset, Address::times_1, 0x03));
3483 __ load_signed_byte(byte3, Address(decode_table, byte3));
3484 __ load_signed_byte(byte4, Address(decode_table, byte4));
3485
3486 __ mov(rax, byte1);
3487 __ orl(rax, byte2);
3488 __ orl(rax, byte3);
3489 __ orl(rax, byte4);
3490 __ jcc(Assembler::positive, L_forceLoop);
3491
3492 __ BIND(L_exit_no_vzero);
3493 __ pop_ppx(rax); // Get original dest value
3494 __ subptr(dest, rax); // Number of bytes converted
3495 __ movptr(rax, dest);
3496 __ pop_ppx(rbx);
3497 __ pop_ppx(r15);
3498 __ pop_ppx(r14);
3499 __ pop_ppx(r13);
3500 __ pop_ppx(r12);
3501 __ leave();
3502 __ ret(0);
3503
3504 // record the stub entry and end
3505 store_archive_data(stub_id, start, __ pc());
3506
3507 return start;
3508 }
3509
3510
3511 /**
3512 * Arguments:
3513 *
3514 * Inputs:
3515 * c_rarg0 - int crc
3516 * c_rarg1 - byte* buf
3517 * c_rarg2 - int length
3518 *
3519 * Output:
3520 * rax - int crc result
3521 */
3522 address StubGenerator::generate_updateBytesCRC32() {
3523 assert(UseCRC32Intrinsics, "need AVX and CLMUL instructions");
3524
3525 StubId stub_id = StubId::stubgen_updateBytesCRC32_id;
3526 int entry_count = StubInfo::entry_count(stub_id);
3527 assert(entry_count == 1, "sanity check");
3528 address start = load_archive_data(stub_id);
3529 if (start != nullptr) {
3530 return start;
3531 }
3532 __ align(CodeEntryAlignment);
3533 StubCodeMark mark(this, stub_id);
3534
3535 start = __ pc();
3536
3537 // Win64: rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...)
3538 // Unix: rdi, rsi, rdx, rcx, r8, r9 (c_rarg0, c_rarg1, ...)
3539 // rscratch1: r10
3540 const Register crc = c_rarg0; // crc
3541 const Register buf = c_rarg1; // source java byte array address
3542 const Register len = c_rarg2; // length
3543 const Register table = c_rarg3; // crc_table address (reuse register)
3544 const Register tmp1 = r11;
3545 const Register tmp2 = r10;
3546 assert_different_registers(crc, buf, len, table, tmp1, tmp2, rax);
3547
3548 BLOCK_COMMENT("Entry:");
3549 __ enter(); // required for proper stackwalking of RuntimeStub frame
3550
3551 if (VM_Version::supports_sse4_1() && VM_Version::supports_avx512_vpclmulqdq() &&
3552 VM_Version::supports_avx512bw() &&
3553 VM_Version::supports_avx512vl()) {
3554 // The constants used in the CRC32 algorithm requires the 1's compliment of the initial crc value.
3555 // However, the constant table for CRC32-C assumes the original crc value. Account for this
3556 // difference before calling and after returning.
3557 __ lea(table, ExternalAddress(StubRoutines::x86::crc_table_avx512_addr()));
3558 __ notl(crc);
3559 __ kernel_crc32_avx512(crc, buf, len, table, tmp1, tmp2);
3560 __ notl(crc);
3561 } else {
3562 __ kernel_crc32(crc, buf, len, table, tmp1);
3563 }
3564
3565 __ movl(rax, crc);
3566 __ vzeroupper();
3567 __ leave(); // required for proper stackwalking of RuntimeStub frame
3568 __ ret(0);
3569
3570 // record the stub entry and end
3571 store_archive_data(stub_id, start, __ pc());
3572
3573 return start;
3574 }
3575
3576 /**
3577 * Arguments:
3578 *
3579 * Inputs:
3580 * c_rarg0 - int crc
3581 * c_rarg1 - byte* buf
3582 * c_rarg2 - long length
3583 * c_rarg3 - table_start - optional (present only when doing a library_call,
3584 * not used by x86 algorithm)
3585 *
3586 * Output:
3587 * rax - int crc result
3588 */
3589 address StubGenerator::generate_updateBytesCRC32C(bool is_pclmulqdq_supported) {
3590 assert(UseCRC32CIntrinsics, "need SSE4_2");
3591 StubId stub_id = StubId::stubgen_updateBytesCRC32C_id;
3592 int entry_count = StubInfo::entry_count(stub_id);
3593 assert(entry_count == 1, "sanity check");
3594 address start = load_archive_data(stub_id);
3595 if (start != nullptr) {
3596 return start;
3597 }
3598 __ align(CodeEntryAlignment);
3599 StubCodeMark mark(this, stub_id);
3600 start = __ pc();
3601
3602 //reg.arg int#0 int#1 int#2 int#3 int#4 int#5 float regs
3603 //Windows RCX RDX R8 R9 none none XMM0..XMM3
3604 //Lin / Sol RDI RSI RDX RCX R8 R9 XMM0..XMM7
3605 const Register crc = c_rarg0; // crc
3606 const Register buf = c_rarg1; // source java byte array address
3607 const Register len = c_rarg2; // length
3608 const Register a = rax;
3609 const Register j = r9;
3610 const Register k = r10;
3611 const Register l = r11;
3612 #ifdef _WIN64
3613 const Register y = rdi;
3614 const Register z = rsi;
3615 #else
3616 const Register y = rcx;
3617 const Register z = r8;
3618 #endif
3619 assert_different_registers(crc, buf, len, a, j, k, l, y, z);
3620
3621 BLOCK_COMMENT("Entry:");
3622 __ enter(); // required for proper stackwalking of RuntimeStub frame
3623 Label L_continue;
3624
3625 if (VM_Version::supports_sse4_1() && VM_Version::supports_avx512_vpclmulqdq() &&
3626 VM_Version::supports_avx512bw() &&
3627 VM_Version::supports_avx512vl()) {
3628 Label L_doSmall;
3629
3630 __ cmpl(len, 384);
3631 __ jcc(Assembler::lessEqual, L_doSmall);
3632
3633 __ lea(j, ExternalAddress(StubRoutines::x86::crc32c_table_avx512_addr()));
3634 __ kernel_crc32_avx512(crc, buf, len, j, l, k);
3635
3636 __ jmp(L_continue);
3637
3638 __ bind(L_doSmall);
3639 }
3640 #ifdef _WIN64
3641 __ push_ppx(y);
3642 __ push_ppx(z);
3643 #endif
3644 __ crc32c_ipl_alg2_alt2(crc, buf, len,
3645 a, j, k,
3646 l, y, z,
3647 c_farg0, c_farg1, c_farg2,
3648 is_pclmulqdq_supported);
3649 #ifdef _WIN64
3650 __ pop_ppx(z);
3651 __ pop_ppx(y);
3652 #endif
3653
3654 __ bind(L_continue);
3655 __ movl(rax, crc);
3656 __ vzeroupper();
3657 __ leave(); // required for proper stackwalking of RuntimeStub frame
3658 __ ret(0);
3659
3660 // record the stub entry and end
3661 store_archive_data(stub_id, start, __ pc());
3662
3663 return start;
3664 }
3665
3666
3667 /**
3668 * Arguments:
3669 *
3670 * Input:
3671 * c_rarg0 - x address
3672 * c_rarg1 - x length
3673 * c_rarg2 - y address
3674 * c_rarg3 - y length
3675 * not Win64
3676 * c_rarg4 - z address
3677 * Win64
3678 * rsp+40 - z address
3679 */
3680 address StubGenerator::generate_multiplyToLen() {
3681 StubId stub_id = StubId::stubgen_multiplyToLen_id;
3682 int entry_count = StubInfo::entry_count(stub_id);
3683 assert(entry_count == 1, "sanity check");
3684 address start = load_archive_data(stub_id);
3685 if (start != nullptr) {
3686 return start;
3687 }
3688 __ align(CodeEntryAlignment);
3689 StubCodeMark mark(this, stub_id);
3690 start = __ pc();
3691
3692 // Win64: rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...)
3693 // Unix: rdi, rsi, rdx, rcx, r8, r9 (c_rarg0, c_rarg1, ...)
3694 const Register x = rdi;
3695 const Register xlen = rax;
3696 const Register y = rsi;
3697 const Register ylen = rcx;
3698 const Register z = r8;
3699
3700 // Next registers will be saved on stack in multiply_to_len().
3701 const Register tmp0 = r11;
3702 const Register tmp1 = r12;
3703 const Register tmp2 = r13;
3704 const Register tmp3 = r14;
3705 const Register tmp4 = r15;
3706 const Register tmp5 = rbx;
3707
3708 BLOCK_COMMENT("Entry:");
3709 __ enter(); // required for proper stackwalking of RuntimeStub frame
3710
3711 setup_arg_regs(4); // x => rdi, xlen => rsi, y => rdx
3712 // ylen => rcx, z => r8
3713 // r9 and r10 may be used to save non-volatile registers
3714 #ifdef _WIN64
3715 // last argument (#4) is on stack on Win64
3716 __ movptr(z, Address(rsp, 6 * wordSize));
3717 #endif
3718
3719 __ movptr(xlen, rsi);
3720 __ movptr(y, rdx);
3721 __ multiply_to_len(x, xlen, y, ylen, z, tmp0, tmp1, tmp2, tmp3, tmp4, tmp5);
3722
3723 restore_arg_regs();
3724
3725 __ leave(); // required for proper stackwalking of RuntimeStub frame
3726 __ ret(0);
3727
3728 // record the stub entry and end
3729 store_archive_data(stub_id, start, __ pc());
3730
3731 return start;
3732 }
3733
3734 /**
3735 * Arguments:
3736 *
3737 * Input:
3738 * c_rarg0 - obja address
3739 * c_rarg1 - objb address
3740 * c_rarg3 - length length
3741 * c_rarg4 - scale log2_array_indxscale
3742 *
3743 * Output:
3744 * rax - int >= mismatched index, < 0 bitwise complement of tail
3745 */
3746 address StubGenerator::generate_vectorizedMismatch() {
3747 StubId stub_id = StubId::stubgen_vectorizedMismatch_id;
3748 int entry_count = StubInfo::entry_count(stub_id);
3749 assert(entry_count == 1, "sanity check");
3750 address start = load_archive_data(stub_id);
3751 if (start != nullptr) {
3752 return start;
3753 }
3754 __ align(CodeEntryAlignment);
3755 StubCodeMark mark(this, stub_id);
3756 start = __ pc();
3757
3758 BLOCK_COMMENT("Entry:");
3759 __ enter();
3760
3761 #ifdef _WIN64 // Win64: rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...)
3762 const Register scale = c_rarg0; //rcx, will exchange with r9
3763 const Register objb = c_rarg1; //rdx
3764 const Register length = c_rarg2; //r8
3765 const Register obja = c_rarg3; //r9
3766 __ xchgq(obja, scale); //now obja and scale contains the correct contents
3767
3768 const Register tmp1 = r10;
3769 const Register tmp2 = r11;
3770 #endif
3771 #ifndef _WIN64 // Unix: rdi, rsi, rdx, rcx, r8, r9 (c_rarg0, c_rarg1, ...)
3772 const Register obja = c_rarg0; //U:rdi
3773 const Register objb = c_rarg1; //U:rsi
3774 const Register length = c_rarg2; //U:rdx
3775 const Register scale = c_rarg3; //U:rcx
3776 const Register tmp1 = r8;
3777 const Register tmp2 = r9;
3778 #endif
3779 const Register result = rax; //return value
3780 const XMMRegister vec0 = xmm0;
3781 const XMMRegister vec1 = xmm1;
3782 const XMMRegister vec2 = xmm2;
3783
3784 __ vectorized_mismatch(obja, objb, length, scale, result, tmp1, tmp2, vec0, vec1, vec2);
3785
3786 __ vzeroupper();
3787 __ leave();
3788 __ ret(0);
3789
3790 // record the stub entry and end
3791 store_archive_data(stub_id, start, __ pc());
3792
3793 return start;
3794 }
3795
3796 /**
3797 * Arguments:
3798 *
3799 // Input:
3800 // c_rarg0 - x address
3801 // c_rarg1 - x length
3802 // c_rarg2 - z address
3803 // c_rarg3 - z length
3804 *
3805 */
3806 address StubGenerator::generate_squareToLen() {
3807
3808 StubId stub_id = StubId::stubgen_squareToLen_id;
3809 int entry_count = StubInfo::entry_count(stub_id);
3810 assert(entry_count == 1, "sanity check");
3811 address start = load_archive_data(stub_id);
3812 if (start != nullptr) {
3813 return start;
3814 }
3815 __ align(CodeEntryAlignment);
3816 StubCodeMark mark(this, stub_id);
3817 start = __ pc();
3818
3819 // Win64: rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...)
3820 // Unix: rdi, rsi, rdx, rcx (c_rarg0, c_rarg1, ...)
3821 const Register x = rdi;
3822 const Register len = rsi;
3823 const Register z = r8;
3824 const Register zlen = rcx;
3825
3826 const Register tmp1 = r12;
3827 const Register tmp2 = r13;
3828 const Register tmp3 = r14;
3829 const Register tmp4 = r15;
3830 const Register tmp5 = rbx;
3831
3832 BLOCK_COMMENT("Entry:");
3833 __ enter(); // required for proper stackwalking of RuntimeStub frame
3834
3835 setup_arg_regs(4); // x => rdi, len => rsi, z => rdx
3836 // zlen => rcx
3837 // r9 and r10 may be used to save non-volatile registers
3838 __ movptr(r8, rdx);
3839 __ square_to_len(x, len, z, zlen, tmp1, tmp2, tmp3, tmp4, tmp5, rdx, rax);
3840
3841 restore_arg_regs();
3842
3843 __ leave(); // required for proper stackwalking of RuntimeStub frame
3844 __ ret(0);
3845
3846 // record the stub entry and end
3847 store_archive_data(stub_id, start, __ pc());
3848
3849 return start;
3850 }
3851
3852 address StubGenerator::generate_method_entry_barrier() {
3853 StubId stub_id = StubId::stubgen_method_entry_barrier_id;
3854 int entry_count = StubInfo::entry_count(stub_id);
3855 assert(entry_count == 1, "sanity check");
3856 address start = load_archive_data(stub_id);
3857 if (start != nullptr) {
3858 return start;
3859 }
3860 __ align(CodeEntryAlignment);
3861 StubCodeMark mark(this, stub_id);
3862 start = __ pc();
3863
3864 Label deoptimize_label;
3865
3866 __ push(-1); // cookie, this is used for writing the new rsp when deoptimizing
3867
3868 BLOCK_COMMENT("Entry:");
3869 __ enter(); // save rbp
3870
3871 // save c_rarg0, because we want to use that value.
3872 // We could do without it but then we depend on the number of slots used by pusha
3873 __ push_ppx(c_rarg0);
3874
3875 __ lea(c_rarg0, Address(rsp, wordSize * 3)); // 1 for cookie, 1 for rbp, 1 for c_rarg0 - this should be the return address
3876
3877 __ pusha();
3878
3879 // The method may have floats as arguments, and we must spill them before calling
3880 // the VM runtime.
3881 assert(Argument::n_float_register_parameters_j == 8, "Assumption");
3882 const int xmm_size = wordSize * 2;
3883 const int xmm_spill_size = xmm_size * Argument::n_float_register_parameters_j;
3884 __ subptr(rsp, xmm_spill_size);
3885 __ movdqu(Address(rsp, xmm_size * 7), xmm7);
3886 __ movdqu(Address(rsp, xmm_size * 6), xmm6);
3887 __ movdqu(Address(rsp, xmm_size * 5), xmm5);
3888 __ movdqu(Address(rsp, xmm_size * 4), xmm4);
3889 __ movdqu(Address(rsp, xmm_size * 3), xmm3);
3890 __ movdqu(Address(rsp, xmm_size * 2), xmm2);
3891 __ movdqu(Address(rsp, xmm_size * 1), xmm1);
3892 __ movdqu(Address(rsp, xmm_size * 0), xmm0);
3893
3894 __ call_VM_leaf(CAST_FROM_FN_PTR(address, static_cast<int (*)(address*)>(BarrierSetNMethod::nmethod_stub_entry_barrier)), 1);
3895
3896 __ movdqu(xmm0, Address(rsp, xmm_size * 0));
3897 __ movdqu(xmm1, Address(rsp, xmm_size * 1));
3898 __ movdqu(xmm2, Address(rsp, xmm_size * 2));
3899 __ movdqu(xmm3, Address(rsp, xmm_size * 3));
3900 __ movdqu(xmm4, Address(rsp, xmm_size * 4));
3901 __ movdqu(xmm5, Address(rsp, xmm_size * 5));
3902 __ movdqu(xmm6, Address(rsp, xmm_size * 6));
3903 __ movdqu(xmm7, Address(rsp, xmm_size * 7));
3904 __ addptr(rsp, xmm_spill_size);
3905
3906 __ cmpl(rax, 1); // 1 means deoptimize
3907 __ jcc(Assembler::equal, deoptimize_label);
3908
3909 __ popa();
3910 __ pop_ppx(c_rarg0);
3911
3912 __ leave();
3913
3914 __ addptr(rsp, 1 * wordSize); // cookie
3915 __ ret(0);
3916
3917
3918 __ BIND(deoptimize_label);
3919
3920 __ popa();
3921 __ pop_ppx(c_rarg0);
3922
3923 __ leave();
3924
3925 // this can be taken out, but is good for verification purposes. getting a SIGSEGV
3926 // here while still having a correct stack is valuable
3927 __ testptr(rsp, Address(rsp, 0));
3928
3929 __ movptr(rsp, Address(rsp, 0)); // new rsp was written in the barrier
3930 __ jmp(Address(rsp, -1 * wordSize)); // jmp target should be callers verified_entry_point
3931
3932 // record the stub entry and end
3933 store_archive_data(stub_id, start, __ pc());
3934
3935 return start;
3936 }
3937
3938 /**
3939 * Arguments:
3940 *
3941 * Input:
3942 * c_rarg0 - out address
3943 * c_rarg1 - in address
3944 * c_rarg2 - offset
3945 * c_rarg3 - len
3946 * not Win64
3947 * c_rarg4 - k
3948 * Win64
3949 * rsp+40 - k
3950 */
3951 address StubGenerator::generate_mulAdd() {
3952 StubId stub_id = StubId::stubgen_mulAdd_id;
3953 int entry_count = StubInfo::entry_count(stub_id);
3954 assert(entry_count == 1, "sanity check");
3955 address start = load_archive_data(stub_id);
3956 if (start != nullptr) {
3957 return start;
3958 }
3959 __ align(CodeEntryAlignment);
3960 StubCodeMark mark(this, stub_id);
3961 start = __ pc();
3962
3963 // Win64: rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...)
3964 // Unix: rdi, rsi, rdx, rcx, r8, r9 (c_rarg0, c_rarg1, ...)
3965 const Register out = rdi;
3966 const Register in = rsi;
3967 const Register offset = r11;
3968 const Register len = rcx;
3969 const Register k = r8;
3970
3971 // Next registers will be saved on stack in mul_add().
3972 const Register tmp1 = r12;
3973 const Register tmp2 = r13;
3974 const Register tmp3 = r14;
3975 const Register tmp4 = r15;
3976 const Register tmp5 = rbx;
3977
3978 BLOCK_COMMENT("Entry:");
3979 __ enter(); // required for proper stackwalking of RuntimeStub frame
3980
3981 setup_arg_regs(4); // out => rdi, in => rsi, offset => rdx
3982 // len => rcx, k => r8
3983 // r9 and r10 may be used to save non-volatile registers
3984 #ifdef _WIN64
3985 // last argument is on stack on Win64
3986 __ movl(k, Address(rsp, 6 * wordSize));
3987 #endif
3988 __ movptr(r11, rdx); // move offset in rdx to offset(r11)
3989 __ mul_add(out, in, offset, len, k, tmp1, tmp2, tmp3, tmp4, tmp5, rdx, rax);
3990
3991 restore_arg_regs();
3992
3993 __ leave(); // required for proper stackwalking of RuntimeStub frame
3994 __ ret(0);
3995
3996 // record the stub entry and end
3997 store_archive_data(stub_id, start, __ pc());
3998
3999 return start;
4000 }
4001
4002 address StubGenerator::generate_bigIntegerRightShift() {
4003 StubId stub_id = StubId::stubgen_bigIntegerRightShiftWorker_id;
4004 int entry_count = StubInfo::entry_count(stub_id);
4005 assert(entry_count == 1, "sanity check");
4006 address start = load_archive_data(stub_id);
4007 if (start != nullptr) {
4008 return start;
4009 }
4010 __ align(CodeEntryAlignment);
4011 StubCodeMark mark(this, stub_id);
4012 start = __ pc();
4013
4014 Label Shift512Loop, ShiftTwo, ShiftTwoLoop, ShiftOne, Exit;
4015 // For Unix, the arguments are as follows: rdi, rsi, rdx, rcx, r8.
4016 const Register newArr = rdi;
4017 const Register oldArr = rsi;
4018 const Register newIdx = rdx;
4019 const Register shiftCount = rcx; // It was intentional to have shiftCount in rcx since it is used implicitly for shift.
4020 const Register totalNumIter = r8;
4021
4022 // For windows, we use r9 and r10 as temps to save rdi and rsi. Thus we cannot allocate them for our temps.
4023 // For everything else, we prefer using r9 and r10 since we do not have to save them before use.
4024 const Register tmp1 = r11; // Caller save.
4025 const Register tmp2 = rax; // Caller save.
4026 const Register tmp3 = WIN64_ONLY(r12) NOT_WIN64(r9); // Windows: Callee save. Linux: Caller save.
4027 const Register tmp4 = WIN64_ONLY(r13) NOT_WIN64(r10); // Windows: Callee save. Linux: Caller save.
4028 const Register tmp5 = r14; // Callee save.
4029 const Register tmp6 = r15;
4030
4031 const XMMRegister x0 = xmm0;
4032 const XMMRegister x1 = xmm1;
4033 const XMMRegister x2 = xmm2;
4034
4035 BLOCK_COMMENT("Entry:");
4036 __ enter(); // required for proper stackwalking of RuntimeStub frame
4037
4038 #ifdef _WIN64
4039 setup_arg_regs(4);
4040 // For windows, since last argument is on stack, we need to move it to the appropriate register.
4041 __ movl(totalNumIter, Address(rsp, 6 * wordSize));
4042 // Save callee save registers.
4043 __ push_ppx(tmp3);
4044 __ push_ppx(tmp4);
4045 #endif
4046 __ push_ppx(tmp5);
4047
4048 // Rename temps used throughout the code.
4049 const Register idx = tmp1;
4050 const Register nIdx = tmp2;
4051
4052 __ xorl(idx, idx);
4053
4054 // Start right shift from end of the array.
4055 // For example, if #iteration = 4 and newIdx = 1
4056 // then dest[4] = src[4] >> shiftCount | src[3] <<< (shiftCount - 32)
4057 // if #iteration = 4 and newIdx = 0
4058 // then dest[3] = src[4] >> shiftCount | src[3] <<< (shiftCount - 32)
4059 __ movl(idx, totalNumIter);
4060 __ movl(nIdx, idx);
4061 __ addl(nIdx, newIdx);
4062
4063 // If vectorization is enabled, check if the number of iterations is at least 64
4064 // If not, then go to ShifTwo processing 2 iterations
4065 if (VM_Version::supports_avx512_vbmi2()) {
4066 __ cmpptr(totalNumIter, (AVX3Threshold/64));
4067 __ jcc(Assembler::less, ShiftTwo);
4068
4069 if (AVX3Threshold < 16 * 64) {
4070 __ cmpl(totalNumIter, 16);
4071 __ jcc(Assembler::less, ShiftTwo);
4072 }
4073 __ evpbroadcastd(x0, shiftCount, Assembler::AVX_512bit);
4074 __ subl(idx, 16);
4075 __ subl(nIdx, 16);
4076 __ BIND(Shift512Loop);
4077 __ evmovdqul(x2, Address(oldArr, idx, Address::times_4, 4), Assembler::AVX_512bit);
4078 __ evmovdqul(x1, Address(oldArr, idx, Address::times_4), Assembler::AVX_512bit);
4079 __ vpshrdvd(x2, x1, x0, Assembler::AVX_512bit);
4080 __ evmovdqul(Address(newArr, nIdx, Address::times_4), x2, Assembler::AVX_512bit);
4081 __ subl(nIdx, 16);
4082 __ subl(idx, 16);
4083 __ jcc(Assembler::greaterEqual, Shift512Loop);
4084 __ addl(idx, 16);
4085 __ addl(nIdx, 16);
4086 }
4087 __ BIND(ShiftTwo);
4088 __ cmpl(idx, 2);
4089 __ jcc(Assembler::less, ShiftOne);
4090 __ subl(idx, 2);
4091 __ subl(nIdx, 2);
4092 __ BIND(ShiftTwoLoop);
4093 __ movl(tmp5, Address(oldArr, idx, Address::times_4, 8));
4094 __ movl(tmp4, Address(oldArr, idx, Address::times_4, 4));
4095 __ movl(tmp3, Address(oldArr, idx, Address::times_4));
4096 __ shrdl(tmp5, tmp4);
4097 __ shrdl(tmp4, tmp3);
4098 __ movl(Address(newArr, nIdx, Address::times_4, 4), tmp5);
4099 __ movl(Address(newArr, nIdx, Address::times_4), tmp4);
4100 __ subl(nIdx, 2);
4101 __ subl(idx, 2);
4102 __ jcc(Assembler::greaterEqual, ShiftTwoLoop);
4103 __ addl(idx, 2);
4104 __ addl(nIdx, 2);
4105
4106 // Do the last iteration
4107 __ BIND(ShiftOne);
4108 __ cmpl(idx, 1);
4109 __ jcc(Assembler::less, Exit);
4110 __ subl(idx, 1);
4111 __ subl(nIdx, 1);
4112 __ movl(tmp4, Address(oldArr, idx, Address::times_4, 4));
4113 __ movl(tmp3, Address(oldArr, idx, Address::times_4));
4114 __ shrdl(tmp4, tmp3);
4115 __ movl(Address(newArr, nIdx, Address::times_4), tmp4);
4116 __ BIND(Exit);
4117 __ vzeroupper();
4118 // Restore callee save registers.
4119 __ pop_ppx(tmp5);
4120 #ifdef _WIN64
4121 __ pop_ppx(tmp4);
4122 __ pop_ppx(tmp3);
4123 restore_arg_regs();
4124 #endif
4125 __ leave(); // required for proper stackwalking of RuntimeStub frame
4126 __ ret(0);
4127
4128 // record the stub entry and end
4129 store_archive_data(stub_id, start, __ pc());
4130
4131 return start;
4132 }
4133
4134 /**
4135 * Arguments:
4136 *
4137 * Input:
4138 * c_rarg0 - newArr address
4139 * c_rarg1 - oldArr address
4140 * c_rarg2 - newIdx
4141 * c_rarg3 - shiftCount
4142 * not Win64
4143 * c_rarg4 - numIter
4144 * Win64
4145 * rsp40 - numIter
4146 */
4147 address StubGenerator::generate_bigIntegerLeftShift() {
4148 StubId stub_id = StubId::stubgen_bigIntegerLeftShiftWorker_id;
4149 int entry_count = StubInfo::entry_count(stub_id);
4150 assert(entry_count == 1, "sanity check");
4151 address start = load_archive_data(stub_id);
4152 if (start != nullptr) {
4153 return start;
4154 }
4155 __ align(CodeEntryAlignment);
4156 StubCodeMark mark(this, stub_id);
4157 start = __ pc();
4158
4159 Label Shift512Loop, ShiftTwo, ShiftTwoLoop, ShiftOne, Exit;
4160 // For Unix, the arguments are as follows: rdi, rsi, rdx, rcx, r8.
4161 const Register newArr = rdi;
4162 const Register oldArr = rsi;
4163 const Register newIdx = rdx;
4164 const Register shiftCount = rcx; // It was intentional to have shiftCount in rcx since it is used implicitly for shift.
4165 const Register totalNumIter = r8;
4166 // For windows, we use r9 and r10 as temps to save rdi and rsi. Thus we cannot allocate them for our temps.
4167 // For everything else, we prefer using r9 and r10 since we do not have to save them before use.
4168 const Register tmp1 = r11; // Caller save.
4169 const Register tmp2 = rax; // Caller save.
4170 const Register tmp3 = WIN64_ONLY(r12) NOT_WIN64(r9); // Windows: Callee save. Linux: Caller save.
4171 const Register tmp4 = WIN64_ONLY(r13) NOT_WIN64(r10); // Windows: Callee save. Linux: Caller save.
4172 const Register tmp5 = r14; // Callee save.
4173
4174 const XMMRegister x0 = xmm0;
4175 const XMMRegister x1 = xmm1;
4176 const XMMRegister x2 = xmm2;
4177 BLOCK_COMMENT("Entry:");
4178 __ enter(); // required for proper stackwalking of RuntimeStub frame
4179
4180 #ifdef _WIN64
4181 setup_arg_regs(4);
4182 // For windows, since last argument is on stack, we need to move it to the appropriate register.
4183 __ movl(totalNumIter, Address(rsp, 6 * wordSize));
4184 // Save callee save registers.
4185 __ push_ppx(tmp3);
4186 __ push_ppx(tmp4);
4187 #endif
4188 __ push_ppx(tmp5);
4189
4190 // Rename temps used throughout the code
4191 const Register idx = tmp1;
4192 const Register numIterTmp = tmp2;
4193
4194 // Start idx from zero.
4195 __ xorl(idx, idx);
4196 // Compute interior pointer for new array. We do this so that we can use same index for both old and new arrays.
4197 __ lea(newArr, Address(newArr, newIdx, Address::times_4));
4198 __ movl(numIterTmp, totalNumIter);
4199
4200 // If vectorization is enabled, check if the number of iterations is at least 64
4201 // If not, then go to ShiftTwo shifting two numbers at a time
4202 if (VM_Version::supports_avx512_vbmi2()) {
4203 __ cmpl(totalNumIter, (AVX3Threshold/64));
4204 __ jcc(Assembler::less, ShiftTwo);
4205
4206 if (AVX3Threshold < 16 * 64) {
4207 __ cmpl(totalNumIter, 16);
4208 __ jcc(Assembler::less, ShiftTwo);
4209 }
4210 __ evpbroadcastd(x0, shiftCount, Assembler::AVX_512bit);
4211 __ subl(numIterTmp, 16);
4212 __ BIND(Shift512Loop);
4213 __ evmovdqul(x1, Address(oldArr, idx, Address::times_4), Assembler::AVX_512bit);
4214 __ evmovdqul(x2, Address(oldArr, idx, Address::times_4, 0x4), Assembler::AVX_512bit);
4215 __ vpshldvd(x1, x2, x0, Assembler::AVX_512bit);
4216 __ evmovdqul(Address(newArr, idx, Address::times_4), x1, Assembler::AVX_512bit);
4217 __ addl(idx, 16);
4218 __ subl(numIterTmp, 16);
4219 __ jcc(Assembler::greaterEqual, Shift512Loop);
4220 __ addl(numIterTmp, 16);
4221 }
4222 __ BIND(ShiftTwo);
4223 __ cmpl(totalNumIter, 1);
4224 __ jcc(Assembler::less, Exit);
4225 __ movl(tmp3, Address(oldArr, idx, Address::times_4));
4226 __ subl(numIterTmp, 2);
4227 __ jcc(Assembler::less, ShiftOne);
4228
4229 __ BIND(ShiftTwoLoop);
4230 __ movl(tmp4, Address(oldArr, idx, Address::times_4, 0x4));
4231 __ movl(tmp5, Address(oldArr, idx, Address::times_4, 0x8));
4232 __ shldl(tmp3, tmp4);
4233 __ shldl(tmp4, tmp5);
4234 __ movl(Address(newArr, idx, Address::times_4), tmp3);
4235 __ movl(Address(newArr, idx, Address::times_4, 0x4), tmp4);
4236 __ movl(tmp3, tmp5);
4237 __ addl(idx, 2);
4238 __ subl(numIterTmp, 2);
4239 __ jcc(Assembler::greaterEqual, ShiftTwoLoop);
4240
4241 // Do the last iteration
4242 __ BIND(ShiftOne);
4243 __ addl(numIterTmp, 2);
4244 __ cmpl(numIterTmp, 1);
4245 __ jcc(Assembler::less, Exit);
4246 __ movl(tmp4, Address(oldArr, idx, Address::times_4, 0x4));
4247 __ shldl(tmp3, tmp4);
4248 __ movl(Address(newArr, idx, Address::times_4), tmp3);
4249
4250 __ BIND(Exit);
4251 __ vzeroupper();
4252 // Restore callee save registers.
4253 __ pop_ppx(tmp5);
4254 #ifdef _WIN64
4255 __ pop_ppx(tmp4);
4256 __ pop_ppx(tmp3);
4257 restore_arg_regs();
4258 #endif
4259 __ leave(); // required for proper stackwalking of RuntimeStub frame
4260 __ ret(0);
4261
4262 // record the stub entry and end
4263 store_archive_data(stub_id, start, __ pc());
4264
4265 return start;
4266 }
4267
4268 void StubGenerator::generate_libm_stubs() {
4269 if (UseLibmIntrinsic && InlineIntrinsics) {
4270 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin)) {
4271 StubRoutines::_dsin = generate_libmSin(); // from stubGenerator_x86_64_sin.cpp
4272 }
4273 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos)) {
4274 StubRoutines::_dcos = generate_libmCos(); // from stubGenerator_x86_64_cos.cpp
4275 }
4276 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dtan)) {
4277 StubRoutines::_dtan = generate_libmTan(); // from stubGenerator_x86_64_tan.cpp
4278 }
4279 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsinh)) {
4280 StubRoutines::_dsinh = generate_libmSinh(); // from stubGenerator_x86_64_sinh.cpp
4281 }
4282 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dtanh)) {
4283 StubRoutines::_dtanh = generate_libmTanh(); // from stubGenerator_x86_64_tanh.cpp
4284 }
4285 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcbrt)) {
4286 StubRoutines::_dcbrt = generate_libmCbrt(); // from stubGenerator_x86_64_cbrt.cpp
4287 }
4288 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dexp)) {
4289 StubRoutines::_dexp = generate_libmExp(); // from stubGenerator_x86_64_exp.cpp
4290 }
4291 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dpow)) {
4292 StubRoutines::_dpow = generate_libmPow(); // from stubGenerator_x86_64_pow.cpp
4293 }
4294 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dlog)) {
4295 StubRoutines::_dlog = generate_libmLog(); // from stubGenerator_x86_64_log.cpp
4296 }
4297 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dlog10)) {
4298 StubRoutines::_dlog10 = generate_libmLog10(); // from stubGenerator_x86_64_log.cpp
4299 }
4300 }
4301 }
4302
4303 /**
4304 * Arguments:
4305 *
4306 * Input:
4307 * c_rarg0 - float16 jshort
4308 *
4309 * Output:
4310 * xmm0 - float
4311 */
4312 address StubGenerator::generate_float16ToFloat() {
4313 StubId stub_id = StubId::stubgen_hf2f_id;
4314 int entry_count = StubInfo::entry_count(stub_id);
4315 assert(entry_count == 1, "sanity check");
4316 address start = load_archive_data(stub_id);
4317 if (start != nullptr) {
4318 return start;
4319 }
4320 StubCodeMark mark(this, stub_id);
4321
4322 start = __ pc();
4323
4324 BLOCK_COMMENT("Entry:");
4325 // No need for RuntimeStub frame since it is called only during JIT compilation
4326
4327 // Load value into xmm0 and convert
4328 __ flt16_to_flt(xmm0, c_rarg0);
4329
4330 __ ret(0);
4331
4332 // record the stub entry and end
4333 store_archive_data(stub_id, start, __ pc());
4334
4335 return start;
4336 }
4337
4338 /**
4339 * Arguments:
4340 *
4341 * Input:
4342 * xmm0 - float
4343 *
4344 * Output:
4345 * rax - float16 jshort
4346 */
4347 address StubGenerator::generate_floatToFloat16() {
4348 StubId stub_id = StubId::stubgen_f2hf_id;
4349 int entry_count = StubInfo::entry_count(stub_id);
4350 assert(entry_count == 1, "sanity check");
4351 address start = load_archive_data(stub_id);
4352 if (start != nullptr) {
4353 return start;
4354 }
4355 StubCodeMark mark(this, stub_id);
4356
4357 start = __ pc();
4358
4359 BLOCK_COMMENT("Entry:");
4360 // No need for RuntimeStub frame since it is called only during JIT compilation
4361
4362 // Convert and put result into rax
4363 __ flt_to_flt16(rax, xmm0, xmm1);
4364
4365 __ ret(0);
4366
4367 // record the stub entry and end
4368 store_archive_data(stub_id, start, __ pc());
4369
4370 return start;
4371 }
4372
4373 address StubGenerator::generate_cont_thaw(StubId stub_id) {
4374 if (!Continuations::enabled()) return nullptr;
4375
4376 bool return_barrier;
4377 bool return_barrier_exception;
4378 Continuation::thaw_kind kind;
4379
4380 switch (stub_id) {
4381 case StubId::stubgen_cont_thaw_id:
4382 return_barrier = false;
4383 return_barrier_exception = false;
4384 kind = Continuation::thaw_top;
4385 break;
4386 case StubId::stubgen_cont_returnBarrier_id:
4387 return_barrier = true;
4388 return_barrier_exception = false;
4389 kind = Continuation::thaw_return_barrier;
4390 break;
4391 case StubId::stubgen_cont_returnBarrierExc_id:
4392 return_barrier = true;
4393 return_barrier_exception = true;
4394 kind = Continuation::thaw_return_barrier_exception;
4395 break;
4396 default:
4397 ShouldNotReachHere();
4398 }
4399 int entry_count = StubInfo::entry_count(stub_id);
4400 assert(entry_count == 1, "sanity check");
4401 address start = load_archive_data(stub_id);
4402 if (start != nullptr) {
4403 return start;
4404 }
4405 StubCodeMark mark(this, stub_id);
4406 start = __ pc();
4407
4408 // TODO: Handle Valhalla return types. May require generating different return barriers.
4409
4410 if (!return_barrier) {
4411 // Pop return address. If we don't do this, we get a drift,
4412 // where the bottom-most frozen frame continuously grows.
4413 __ pop(c_rarg3);
4414 } else {
4415 __ movptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset()));
4416 }
4417
4418 #ifdef ASSERT
4419 {
4420 Label L_good_sp;
4421 __ cmpptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset()));
4422 __ jcc(Assembler::equal, L_good_sp);
4423 __ stop("Incorrect rsp at thaw entry");
4424 __ BIND(L_good_sp);
4425 }
4426 #endif // ASSERT
4427
4428 if (return_barrier) {
4429 // Preserve possible return value from a method returning to the return barrier.
4430 __ push_ppx(rax);
4431 __ push_d(xmm0);
4432 }
4433
4434 __ movptr(c_rarg0, r15_thread);
4435 __ movptr(c_rarg1, (return_barrier ? 1 : 0));
4436 __ call_VM_leaf(CAST_FROM_FN_PTR(address, Continuation::prepare_thaw), 2);
4437 __ movptr(rbx, rax);
4438
4439 if (return_barrier) {
4440 // Restore return value from a method returning to the return barrier.
4441 // No safepoint in the call to thaw, so even an oop return value should be OK.
4442 __ pop_d(xmm0);
4443 __ pop_ppx(rax);
4444 }
4445
4446 #ifdef ASSERT
4447 {
4448 Label L_good_sp;
4449 __ cmpptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset()));
4450 __ jcc(Assembler::equal, L_good_sp);
4451 __ stop("Incorrect rsp after prepare thaw");
4452 __ BIND(L_good_sp);
4453 }
4454 #endif // ASSERT
4455
4456 // rbx contains the size of the frames to thaw, 0 if overflow or no more frames
4457 Label L_thaw_success;
4458 __ testptr(rbx, rbx);
4459 __ jccb(Assembler::notZero, L_thaw_success);
4460 __ jump(RuntimeAddress(SharedRuntime::throw_StackOverflowError_entry()));
4461 __ bind(L_thaw_success);
4462
4463 // Make room for the thawed frames and align the stack.
4464 __ subptr(rsp, rbx);
4465 __ andptr(rsp, -StackAlignmentInBytes);
4466
4467 if (return_barrier) {
4468 // Preserve possible return value from a method returning to the return barrier. (Again.)
4469 __ push_ppx(rax);
4470 __ push_d(xmm0);
4471 }
4472
4473 // If we want, we can templatize thaw by kind, and have three different entries.
4474 __ movptr(c_rarg0, r15_thread);
4475 __ movptr(c_rarg1, kind);
4476 __ call_VM_leaf(Continuation::thaw_entry(), 2);
4477 __ movptr(rbx, rax);
4478
4479 if (return_barrier) {
4480 // Restore return value from a method returning to the return barrier. (Again.)
4481 // No safepoint in the call to thaw, so even an oop return value should be OK.
4482 __ pop_d(xmm0);
4483 __ pop_ppx(rax);
4484 } else {
4485 // Return 0 (success) from doYield.
4486 __ xorptr(rax, rax);
4487 }
4488
4489 // After thawing, rbx is the SP of the yielding frame.
4490 // Move there, and then to saved RBP slot.
4491 __ movptr(rsp, rbx);
4492 __ subptr(rsp, 2*wordSize);
4493
4494 if (return_barrier_exception) {
4495 __ movptr(c_rarg0, r15_thread);
4496 __ movptr(c_rarg1, Address(rsp, wordSize)); // return address
4497
4498 // rax still holds the original exception oop, save it before the call
4499 __ push_ppx(rax);
4500
4501 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), 2);
4502 __ movptr(rbx, rax);
4503
4504 // Continue at exception handler:
4505 // rax: exception oop
4506 // rbx: exception handler
4507 // rdx: exception pc
4508 __ pop_ppx(rax);
4509 __ verify_oop(rax);
4510 __ pop(rbp); // pop out RBP here too
4511 __ pop(rdx);
4512 __ jmp(rbx);
4513 } else {
4514 // We are "returning" into the topmost thawed frame; see Thaw::push_return_frame
4515 __ pop(rbp);
4516 __ ret(0);
4517 }
4518
4519 // record the stub entry and end
4520 store_archive_data(stub_id, start, __ pc());
4521
4522 return start;
4523 }
4524
4525 address StubGenerator::generate_cont_thaw() {
4526 return generate_cont_thaw(StubId::stubgen_cont_thaw_id);
4527 }
4528
4529 // TODO: will probably need multiple return barriers depending on return type
4530
4531 address StubGenerator::generate_cont_returnBarrier() {
4532 return generate_cont_thaw(StubId::stubgen_cont_returnBarrier_id);
4533 }
4534
4535 address StubGenerator::generate_cont_returnBarrier_exception() {
4536 return generate_cont_thaw(StubId::stubgen_cont_returnBarrierExc_id);
4537 }
4538
4539 address StubGenerator::generate_cont_preempt_stub() {
4540 if (!Continuations::enabled()) return nullptr;
4541 StubId stub_id = StubId::stubgen_cont_preempt_id;
4542 int entry_count = StubInfo::entry_count(stub_id);
4543 assert(entry_count == 1, "sanity check");
4544 address start = load_archive_data(stub_id);
4545 if (start != nullptr) {
4546 return start;
4547 }
4548 StubCodeMark mark(this, stub_id);
4549 start = __ pc();
4550
4551 __ reset_last_Java_frame(true);
4552
4553 // Set rsp to enterSpecial frame, i.e. remove all frames copied into the heap.
4554 __ movptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset()));
4555
4556 Label preemption_cancelled;
4557 __ movbool(rscratch1, Address(r15_thread, JavaThread::preemption_cancelled_offset()));
4558 __ testbool(rscratch1);
4559 __ jcc(Assembler::notZero, preemption_cancelled);
4560
4561 // Remove enterSpecial frame from the stack and return to Continuation.run() to unmount.
4562 SharedRuntime::continuation_enter_cleanup(_masm);
4563 __ pop(rbp);
4564 __ ret(0);
4565
4566 // We acquired the monitor after freezing the frames so call thaw to continue execution.
4567 __ bind(preemption_cancelled);
4568 __ movbool(Address(r15_thread, JavaThread::preemption_cancelled_offset()), false);
4569 __ lea(rbp, Address(rsp, checked_cast<int32_t>(ContinuationEntry::size())));
4570 __ movptr(rscratch1, ExternalAddress(ContinuationEntry::thaw_call_pc_address()));
4571 __ jmp(rscratch1);
4572
4573 // record the stub entry and end
4574 store_archive_data(stub_id, start, __ pc());
4575
4576 return start;
4577 }
4578
4579 // exception handler for upcall stubs
4580 address StubGenerator::generate_upcall_stub_exception_handler() {
4581 StubId stub_id = StubId::stubgen_upcall_stub_exception_handler_id;
4582 int entry_count = StubInfo::entry_count(stub_id);
4583 assert(entry_count == 1, "sanity check");
4584 address start = load_archive_data(stub_id);
4585 if (start != nullptr) {
4586 return start;
4587 }
4588 StubCodeMark mark(this, stub_id);
4589 start = __ pc();
4590
4591 // native caller has no idea how to handle exceptions
4592 // we just crash here. Up to callee to catch exceptions.
4593 __ verify_oop(rax);
4594 __ vzeroupper();
4595 __ mov(c_rarg0, rax);
4596 __ andptr(rsp, -StackAlignmentInBytes); // align stack as required by ABI
4597 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows
4598 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, UpcallLinker::handle_uncaught_exception)));
4599 __ should_not_reach_here();
4600
4601 // record the stub entry and end
4602 store_archive_data(stub_id, start, __ pc());
4603
4604 return start;
4605 }
4606
4607 // load Method* target of MethodHandle
4608 // j_rarg0 = jobject receiver
4609 // rbx = result
4610 address StubGenerator::generate_upcall_stub_load_target() {
4611 StubId stub_id = StubId::stubgen_upcall_stub_load_target_id;
4612 int entry_count = StubInfo::entry_count(stub_id);
4613 assert(entry_count == 1, "sanity check");
4614 address start = load_archive_data(stub_id);
4615 if (start != nullptr) {
4616 return start;
4617 }
4618 StubCodeMark mark(this, stub_id);
4619 start = __ pc();
4620
4621 __ resolve_global_jobject(j_rarg0, rscratch1);
4622 // Load target method from receiver
4623 __ load_heap_oop(rbx, Address(j_rarg0, java_lang_invoke_MethodHandle::form_offset()), rscratch1);
4624 __ load_heap_oop(rbx, Address(rbx, java_lang_invoke_LambdaForm::vmentry_offset()), rscratch1);
4625 __ load_heap_oop(rbx, Address(rbx, java_lang_invoke_MemberName::method_offset()), rscratch1);
4626 __ access_load_at(T_ADDRESS, IN_HEAP, rbx,
4627 Address(rbx, java_lang_invoke_ResolvedMethodName::vmtarget_offset()),
4628 noreg);
4629 __ movptr(Address(r15_thread, JavaThread::callee_target_offset()), rbx); // just in case callee is deoptimized
4630
4631 __ ret(0);
4632
4633 // record the stub entry and end
4634 store_archive_data(stub_id, start, __ pc());
4635
4636 return start;
4637 }
4638
4639 void StubGenerator::generate_lookup_secondary_supers_table_stub() {
4640 StubId stub_id = StubId::stubgen_lookup_secondary_supers_table_id;
4641 GrowableArray<address> entries;
4642 int entry_count = StubInfo::entry_count(stub_id);
4643 assert(entry_count == Klass::SECONDARY_SUPERS_TABLE_SIZE, "sanity check");
4644 address start = load_archive_data(stub_id, &entries);
4645 if (start != nullptr) {
4646 assert(entries.length() == Klass::SECONDARY_SUPERS_TABLE_SIZE - 1,
4647 "unexpected extra entry count %d", entries.length());
4648 StubRoutines::_lookup_secondary_supers_table_stubs[0] = start;
4649 for (int slot = 1; slot < Klass::SECONDARY_SUPERS_TABLE_SIZE; slot++) {
4650 StubRoutines::_lookup_secondary_supers_table_stubs[slot] = entries.at(slot - 1);
4651 }
4652 return;
4653 }
4654 StubCodeMark mark(this, stub_id);
4655
4656 const Register
4657 r_super_klass = rax,
4658 r_sub_klass = rsi,
4659 result = rdi;
4660
4661 for (int slot = 0; slot < Klass::SECONDARY_SUPERS_TABLE_SIZE; slot++) {
4662 address next_entry = __ pc();
4663 if (slot == 0) {
4664 start = next_entry;
4665 } else {
4666 entries.append(next_entry);
4667 }
4668 StubRoutines::_lookup_secondary_supers_table_stubs[slot] = next_entry;
4669 __ lookup_secondary_supers_table_const(r_sub_klass, r_super_klass,
4670 rdx, rcx, rbx, r11, // temps
4671 result,
4672 slot);
4673 __ ret(0);
4674 }
4675
4676 // record the stub entry and end plus all the auxiliary entries
4677 store_archive_data(stub_id, start, __ pc(), &entries);
4678 }
4679
4680 // Slow path implementation for UseSecondarySupersTable.
4681 address StubGenerator::generate_lookup_secondary_supers_table_slow_path_stub() {
4682 StubId stub_id = StubId::stubgen_lookup_secondary_supers_table_slow_path_id;
4683 int entry_count = StubInfo::entry_count(stub_id);
4684 assert(entry_count == 1, "sanity check");
4685 address start = load_archive_data(stub_id);
4686 if (start != nullptr) {
4687 return start;
4688 }
4689 StubCodeMark mark(this, stub_id);
4690 start = __ pc();
4691
4692 const Register
4693 r_super_klass = rax,
4694 r_array_base = rbx,
4695 r_array_index = rdx,
4696 r_sub_klass = rsi,
4697 r_bitmap = r11,
4698 result = rdi;
4699
4700 Label L_success;
4701 __ lookup_secondary_supers_table_slow_path(r_super_klass, r_array_base, r_array_index, r_bitmap,
4702 rcx, rdi, // temps
4703 &L_success);
4704 // bind(L_failure);
4705 __ movl(result, 1);
4706 __ ret(0);
4707
4708 __ bind(L_success);
4709 __ movl(result, 0);
4710 __ ret(0);
4711
4712 // record the stub entry and end
4713 store_archive_data(stub_id, start, __ pc());
4714
4715 return start;
4716 }
4717
4718 void StubGenerator::create_control_words() {
4719 // Round to nearest, 64-bit mode, exceptions masked, flags specialized
4720 StubRoutines::x86::_mxcsr_std = EnableX86ECoreOpts ? 0x1FBF : 0x1F80;
4721 // Round to zero, 64-bit mode, exceptions masked, flags specialized
4722 StubRoutines::x86::_mxcsr_rz = EnableX86ECoreOpts ? 0x7FBF : 0x7F80;
4723 }
4724
4725 // Initialization
4726 void StubGenerator::generate_preuniverse_stubs() {
4727 // atomic calls
4728 StubRoutines::_fence_entry = generate_orderaccess_fence();
4729 }
4730
4731 void StubGenerator::generate_initial_stubs() {
4732 // Generates all stubs and initializes the entry points
4733
4734 // This platform-specific settings are needed by generate_call_stub()
4735 create_control_words();
4736
4737 // Initialize table for unsafe copy memeory check.
4738 if (UnsafeMemoryAccess::_table == nullptr) {
4739 UnsafeMemoryAccess::create_table(16 + 4); // 16 for copyMemory; 4 for setMemory
4740 }
4741
4742 // entry points that exist in all platforms Note: This is code
4743 // that could be shared among different platforms - however the
4744 // benefit seems to be smaller than the disadvantage of having a
4745 // much more complicated generator structure. See also comment in
4746 // stubRoutines.hpp.
4747
4748 StubRoutines::_forward_exception_entry = generate_forward_exception();
4749
4750 StubRoutines::_call_stub_entry =
4751 generate_call_stub(StubRoutines::_call_stub_return_address);
4752
4753 // is referenced by megamorphic call
4754 StubRoutines::_catch_exception_entry = generate_catch_exception();
4755
4756 // platform dependent
4757 StubRoutines::x86::_verify_mxcsr_entry = generate_verify_mxcsr();
4758
4759 StubRoutines::x86::_f2i_fixup = generate_f2i_fixup();
4760 StubRoutines::x86::_f2l_fixup = generate_f2l_fixup();
4761 StubRoutines::x86::_d2i_fixup = generate_d2i_fixup();
4762 StubRoutines::x86::_d2l_fixup = generate_d2l_fixup();
4763
4764 StubRoutines::x86::_float_sign_mask = generate_fp_mask(StubId::stubgen_float_sign_mask_id, 0x7FFFFFFF7FFFFFFF);
4765 StubRoutines::x86::_float_sign_flip = generate_fp_mask(StubId::stubgen_float_sign_flip_id, 0x8000000080000000);
4766 StubRoutines::x86::_double_sign_mask = generate_fp_mask(StubId::stubgen_double_sign_mask_id, 0x7FFFFFFFFFFFFFFF);
4767 StubRoutines::x86::_double_sign_flip = generate_fp_mask(StubId::stubgen_double_sign_flip_id, 0x8000000000000000);
4768
4769 if (UseCRC32Intrinsics) {
4770 StubRoutines::_updateBytesCRC32 = generate_updateBytesCRC32();
4771 }
4772
4773 if (UseCRC32CIntrinsics) {
4774 bool supports_clmul = VM_Version::supports_clmul();
4775 StubRoutines::_updateBytesCRC32C = generate_updateBytesCRC32C(supports_clmul);
4776 }
4777
4778 if (VM_Version::supports_float16()) {
4779 // For results consistency both intrinsics should be enabled.
4780 // vmIntrinsics checks InlineIntrinsics flag, no need to check it here.
4781 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_float16ToFloat) &&
4782 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_floatToFloat16)) {
4783 StubRoutines::_hf2f = generate_float16ToFloat();
4784 StubRoutines::_f2hf = generate_floatToFloat16();
4785 }
4786 }
4787
4788 generate_libm_stubs();
4789
4790 StubRoutines::_fmod = generate_libmFmod(); // from stubGenerator_x86_64_fmod.cpp
4791 }
4792
4793 void StubGenerator::generate_continuation_stubs() {
4794 // Continuation stubs:
4795 StubRoutines::_cont_thaw = generate_cont_thaw();
4796 StubRoutines::_cont_returnBarrier = generate_cont_returnBarrier();
4797 StubRoutines::_cont_returnBarrierExc = generate_cont_returnBarrier_exception();
4798 StubRoutines::_cont_preempt_stub = generate_cont_preempt_stub();
4799 }
4800
4801 void StubGenerator::generate_final_stubs() {
4802 // Generates the rest of stubs and initializes the entry points
4803
4804 // support for verify_oop (must happen after universe_init)
4805 if (VerifyOops) {
4806 StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop();
4807 }
4808
4809 // arraycopy stubs used by compilers
4810 generate_arraycopy_stubs();
4811
4812 StubRoutines::_method_entry_barrier = generate_method_entry_barrier();
4813
4814 #ifdef COMPILER2
4815 if (UseSecondarySupersTable) {
4816 StubRoutines::_lookup_secondary_supers_table_slow_path_stub = generate_lookup_secondary_supers_table_slow_path_stub();
4817 if (! InlineSecondarySupersTest) {
4818 generate_lookup_secondary_supers_table_stub();
4819 }
4820 }
4821 #endif // COMPILER2
4822
4823 if (UseVectorizedMismatchIntrinsic) {
4824 StubRoutines::_vectorizedMismatch = generate_vectorizedMismatch();
4825 }
4826
4827 StubRoutines::_upcall_stub_exception_handler = generate_upcall_stub_exception_handler();
4828 StubRoutines::_upcall_stub_load_target = generate_upcall_stub_load_target();
4829 }
4830
4831 void StubGenerator::generate_compiler_stubs() {
4832 #ifdef COMPILER2
4833
4834 // Entry points that are C2 compiler specific.
4835
4836 StubRoutines::x86::_vector_float_sign_mask = generate_vector_mask(StubId::stubgen_vector_float_sign_mask_id, 0x7FFFFFFF7FFFFFFF);
4837 StubRoutines::x86::_vector_float_sign_flip = generate_vector_mask(StubId::stubgen_vector_float_sign_flip_id, 0x8000000080000000);
4838 StubRoutines::x86::_vector_double_sign_mask = generate_vector_mask(StubId::stubgen_vector_double_sign_mask_id, 0x7FFFFFFFFFFFFFFF);
4839 StubRoutines::x86::_vector_double_sign_flip = generate_vector_mask(StubId::stubgen_vector_double_sign_flip_id, 0x8000000000000000);
4840 StubRoutines::x86::_vector_all_bits_set = generate_vector_mask(StubId::stubgen_vector_all_bits_set_id, 0xFFFFFFFFFFFFFFFF);
4841 StubRoutines::x86::_vector_int_mask_cmp_bits = generate_vector_mask(StubId::stubgen_vector_int_mask_cmp_bits_id, 0x0000000100000001);
4842 StubRoutines::x86::_vector_short_to_byte_mask = generate_vector_mask(StubId::stubgen_vector_short_to_byte_mask_id, 0x00ff00ff00ff00ff);
4843 StubRoutines::x86::_vector_byte_perm_mask = generate_vector_byte_perm_mask();
4844 StubRoutines::x86::_vector_int_to_byte_mask = generate_vector_mask(StubId::stubgen_vector_int_to_byte_mask_id, 0x000000ff000000ff);
4845 StubRoutines::x86::_vector_int_to_short_mask = generate_vector_mask(StubId::stubgen_vector_int_to_short_mask_id, 0x0000ffff0000ffff);
4846 StubRoutines::x86::_vector_32_bit_mask = generate_vector_custom_i32(StubId::stubgen_vector_32_bit_mask_id, Assembler::AVX_512bit,
4847 0xFFFFFFFF, 0, 0, 0);
4848 StubRoutines::x86::_vector_64_bit_mask = generate_vector_custom_i32(StubId::stubgen_vector_64_bit_mask_id, Assembler::AVX_512bit,
4849 0xFFFFFFFF, 0xFFFFFFFF, 0, 0);
4850 StubRoutines::x86::_vector_int_shuffle_mask = generate_vector_mask(StubId::stubgen_vector_int_shuffle_mask_id, 0x0302010003020100);
4851 StubRoutines::x86::_vector_byte_shuffle_mask = generate_vector_byte_shuffle_mask();
4852 StubRoutines::x86::_vector_short_shuffle_mask = generate_vector_mask(StubId::stubgen_vector_short_shuffle_mask_id, 0x0100010001000100);
4853 StubRoutines::x86::_vector_long_shuffle_mask = generate_vector_mask(StubId::stubgen_vector_long_shuffle_mask_id, 0x0000000100000000);
4854 StubRoutines::x86::_vector_long_sign_mask = generate_vector_mask(StubId::stubgen_vector_long_sign_mask_id, 0x8000000000000000);
4855 generate_iota_indices();
4856 StubRoutines::x86::_vector_count_leading_zeros_lut = generate_count_leading_zeros_lut();
4857 StubRoutines::x86::_vector_reverse_bit_lut = generate_vector_reverse_bit_lut();
4858 StubRoutines::x86::_vector_reverse_byte_perm_mask_long = generate_vector_reverse_byte_perm_mask_long();
4859 StubRoutines::x86::_vector_reverse_byte_perm_mask_int = generate_vector_reverse_byte_perm_mask_int();
4860 StubRoutines::x86::_vector_reverse_byte_perm_mask_short = generate_vector_reverse_byte_perm_mask_short();
4861
4862 if (VM_Version::supports_avx2() && !VM_Version::supports_avx512vl()) {
4863 StubRoutines::x86::_compress_perm_table32 = generate_compress_perm_table(StubId::stubgen_compress_perm_table32_id);
4864 StubRoutines::x86::_compress_perm_table64 = generate_compress_perm_table(StubId::stubgen_compress_perm_table64_id);
4865 StubRoutines::x86::_expand_perm_table32 = generate_expand_perm_table(StubId::stubgen_expand_perm_table32_id);
4866 StubRoutines::x86::_expand_perm_table64 = generate_expand_perm_table(StubId::stubgen_expand_perm_table64_id);
4867 }
4868
4869 if (VM_Version::supports_avx2() && !VM_Version::supports_avx512_vpopcntdq()) {
4870 // lut implementation influenced by counting 1s algorithm from section 5-1 of Hackers' Delight.
4871 StubRoutines::x86::_vector_popcount_lut = generate_popcount_avx_lut();
4872 }
4873
4874 generate_aes_stubs();
4875
4876 generate_ghash_stubs();
4877
4878 generate_chacha_stubs();
4879
4880 generate_kyber_stubs();
4881
4882 generate_dilithium_stubs();
4883
4884 generate_sha3_stubs();
4885
4886 // data cache line writeback
4887 StubRoutines::_data_cache_writeback = generate_data_cache_writeback();
4888 StubRoutines::_data_cache_writeback_sync = generate_data_cache_writeback_sync();
4889
4890 if ((UseAVX == 2) && EnableX86ECoreOpts && UseCountTrailingZerosInstruction) {
4891 generate_string_indexof(StubRoutines::_string_indexof_array);
4892 }
4893
4894 if (UseAdler32Intrinsics) {
4895 StubRoutines::_updateBytesAdler32 = generate_updateBytesAdler32();
4896 }
4897
4898 if (UsePoly1305Intrinsics) {
4899 StubRoutines::_poly1305_processBlocks = generate_poly1305_processBlocks();
4900 }
4901
4902 if (UseIntPolyIntrinsics) {
4903 StubRoutines::_intpoly_montgomeryMult_P256 = generate_intpoly_montgomeryMult_P256();
4904 StubRoutines::_intpoly_assign = generate_intpoly_assign();
4905 }
4906
4907 if (UseMD5Intrinsics) {
4908 StubRoutines::_md5_implCompress = generate_md5_implCompress(StubId::stubgen_md5_implCompress_id);
4909 StubRoutines::_md5_implCompressMB = generate_md5_implCompress(StubId::stubgen_md5_implCompressMB_id);
4910 }
4911
4912 if (UseSHA1Intrinsics) {
4913 StubRoutines::x86::_upper_word_mask_addr = generate_upper_word_mask();
4914 StubRoutines::x86::_shuffle_byte_flip_mask_addr = generate_shuffle_byte_flip_mask();
4915 StubRoutines::_sha1_implCompress = generate_sha1_implCompress(StubId::stubgen_sha1_implCompress_id);
4916 StubRoutines::_sha1_implCompressMB = generate_sha1_implCompress(StubId::stubgen_sha1_implCompressMB_id);
4917 }
4918
4919 if (UseSHA256Intrinsics) {
4920 address entry2 = nullptr;
4921 address entry3 = nullptr;
4922 StubRoutines::x86::_k256_adr = (address)StubRoutines::x86::_k256;
4923 char* dst = (char*)StubRoutines::x86::_k256_W;
4924 char* src = (char*)StubRoutines::x86::_k256;
4925 for (int ii = 0; ii < 16; ++ii) {
4926 memcpy(dst + 32 * ii, src + 16 * ii, 16);
4927 memcpy(dst + 32 * ii + 16, src + 16 * ii, 16);
4928 }
4929 StubRoutines::x86::_k256_W_adr = (address)StubRoutines::x86::_k256_W;
4930 StubRoutines::x86::_pshuffle_byte_flip_mask_addr = generate_pshuffle_byte_flip_mask(entry2, entry3);
4931 StubRoutines::x86::_pshuffle_byte_flip_mask_00ba_addr = entry2;
4932 StubRoutines::x86::_pshuffle_byte_flip_mask_dc00_addr = entry3;
4933 StubRoutines::_sha256_implCompress = generate_sha256_implCompress(StubId::stubgen_sha256_implCompress_id);
4934 StubRoutines::_sha256_implCompressMB = generate_sha256_implCompress(StubId::stubgen_sha256_implCompressMB_id);
4935 }
4936
4937 if (UseSHA512Intrinsics) {
4938 address entry2 = nullptr;
4939 StubRoutines::x86::_k512_W_addr = (address)StubRoutines::x86::_k512_W;
4940 StubRoutines::x86::_pshuffle_byte_flip_mask_addr_sha512 = generate_pshuffle_byte_flip_mask_sha512(entry2);
4941 StubRoutines::x86::_pshuffle_byte_flip_mask_ymm_lo_addr_sha512 = entry2;
4942 StubRoutines::_sha512_implCompress = generate_sha512_implCompress(StubId::stubgen_sha512_implCompress_id);
4943 StubRoutines::_sha512_implCompressMB = generate_sha512_implCompress(StubId::stubgen_sha512_implCompressMB_id);
4944 }
4945
4946 if (UseBASE64Intrinsics) {
4947 if(VM_Version::supports_avx2()) {
4948 StubRoutines::x86::_avx2_shuffle_base64 = base64_avx2_shuffle_addr();
4949 StubRoutines::x86::_avx2_input_mask_base64 = base64_avx2_input_mask_addr();
4950 StubRoutines::x86::_avx2_lut_base64 = base64_avx2_lut_addr();
4951 StubRoutines::x86::_avx2_decode_tables_base64 = base64_AVX2_decode_tables_addr();
4952 StubRoutines::x86::_avx2_decode_lut_tables_base64 = base64_AVX2_decode_LUT_tables_addr();
4953 }
4954 StubRoutines::x86::_encoding_table_base64 = base64_encoding_table_addr();
4955 if (VM_Version::supports_avx512_vbmi()) {
4956 StubRoutines::x86::_shuffle_base64 = base64_shuffle_addr();
4957 StubRoutines::x86::_lookup_lo_base64 = base64_vbmi_lookup_lo_addr();
4958 StubRoutines::x86::_lookup_hi_base64 = base64_vbmi_lookup_hi_addr();
4959 StubRoutines::x86::_lookup_lo_base64url = base64_vbmi_lookup_lo_url_addr();
4960 StubRoutines::x86::_lookup_hi_base64url = base64_vbmi_lookup_hi_url_addr();
4961 StubRoutines::x86::_pack_vec_base64 = base64_vbmi_pack_vec_addr();
4962 StubRoutines::x86::_join_0_1_base64 = base64_vbmi_join_0_1_addr();
4963 StubRoutines::x86::_join_1_2_base64 = base64_vbmi_join_1_2_addr();
4964 StubRoutines::x86::_join_2_3_base64 = base64_vbmi_join_2_3_addr();
4965 }
4966 StubRoutines::x86::_decoding_table_base64 = base64_decoding_table_addr();
4967 StubRoutines::_base64_encodeBlock = generate_base64_encodeBlock();
4968 StubRoutines::_base64_decodeBlock = generate_base64_decodeBlock();
4969 }
4970
4971 if (UseMultiplyToLenIntrinsic) {
4972 StubRoutines::_multiplyToLen = generate_multiplyToLen();
4973 }
4974 if (UseSquareToLenIntrinsic) {
4975 StubRoutines::_squareToLen = generate_squareToLen();
4976 }
4977 if (UseMulAddIntrinsic) {
4978 StubRoutines::_mulAdd = generate_mulAdd();
4979 }
4980 if (VM_Version::supports_avx512_vbmi2()) {
4981 StubRoutines::_bigIntegerRightShiftWorker = generate_bigIntegerRightShift();
4982 StubRoutines::_bigIntegerLeftShiftWorker = generate_bigIntegerLeftShift();
4983 }
4984 if (UseMontgomeryMultiplyIntrinsic) {
4985 StubRoutines::_montgomeryMultiply
4986 = CAST_FROM_FN_PTR(address, SharedRuntime::montgomery_multiply);
4987 }
4988 if (UseMontgomerySquareIntrinsic) {
4989 StubRoutines::_montgomerySquare
4990 = CAST_FROM_FN_PTR(address, SharedRuntime::montgomery_square);
4991 }
4992
4993 // Load x86_64_sort library on supported hardware to enable SIMD sort and partition intrinsics
4994
4995 if (VM_Version::supports_avx512dq() || VM_Version::supports_avx2()) {
4996 void *libsimdsort = nullptr;
4997 char ebuf_[1024];
4998 char dll_name_simd_sort[JVM_MAXPATHLEN];
4999 if (os::dll_locate_lib(dll_name_simd_sort, sizeof(dll_name_simd_sort), Arguments::get_dll_dir(), "simdsort")) {
5000 libsimdsort = os::dll_load(dll_name_simd_sort, ebuf_, sizeof ebuf_);
5001 }
5002 // Get addresses for SIMD sort and partition routines
5003 if (libsimdsort != nullptr) {
5004 log_info(library)("Loaded library %s, handle " INTPTR_FORMAT, JNI_LIB_PREFIX "simdsort" JNI_LIB_SUFFIX, p2i(libsimdsort));
5005
5006 os::snprintf_checked(ebuf_, sizeof(ebuf_), VM_Version::supports_avx512_simd_sort() ? "avx512_sort" : "avx2_sort");
5007 StubRoutines::_array_sort = (address)os::dll_lookup(libsimdsort, ebuf_);
5008
5009 os::snprintf_checked(ebuf_, sizeof(ebuf_), VM_Version::supports_avx512_simd_sort() ? "avx512_partition" : "avx2_partition");
5010 StubRoutines::_array_partition = (address)os::dll_lookup(libsimdsort, ebuf_);
5011 }
5012 }
5013
5014 #endif // COMPILER2
5015 }
5016
5017 StubGenerator::StubGenerator(CodeBuffer* code, BlobId blob_id, AOTStubData* stub_data) : StubCodeGenerator(code, blob_id, stub_data) {
5018 switch(blob_id) {
5019 case BlobId::stubgen_preuniverse_id:
5020 generate_preuniverse_stubs();
5021 break;
5022 case BlobId::stubgen_initial_id:
5023 generate_initial_stubs();
5024 break;
5025 case BlobId::stubgen_continuation_id:
5026 generate_continuation_stubs();
5027 break;
5028 case BlobId::stubgen_compiler_id:
5029 generate_compiler_stubs();
5030 break;
5031 case BlobId::stubgen_final_id:
5032 generate_final_stubs();
5033 break;
5034 default:
5035 fatal("unexpected blob id: %s", StubInfo::name(blob_id));
5036 break;
5037 };
5038 }
5039
5040 #if INCLUDE_CDS
5041 // publish addresses of static data defined in this file and in other
5042 // stubgen stub generator files
5043 void StubGenerator::init_AOTAddressTable(GrowableArray<address>& external_addresses) {
5044 init_AOTAddressTable_adler(external_addresses);
5045 init_AOTAddressTable_aes(external_addresses);
5046 init_AOTAddressTable_cbrt(external_addresses);
5047 init_AOTAddressTable_chacha(external_addresses);
5048 // constants publishes for all of address use by cos and almost all of sin
5049 init_AOTAddressTable_constants(external_addresses);
5050 init_AOTAddressTable_dilithium(external_addresses);
5051 init_AOTAddressTable_exp(external_addresses);
5052 init_AOTAddressTable_fmod(external_addresses);
5053 init_AOTAddressTable_ghash(external_addresses);
5054 init_AOTAddressTable_kyber(external_addresses);
5055 init_AOTAddressTable_log(external_addresses);
5056 init_AOTAddressTable_poly1305(external_addresses);
5057 init_AOTAddressTable_poly_mont(external_addresses);
5058 init_AOTAddressTable_pow(external_addresses);
5059 init_AOTAddressTable_sha3(external_addresses);
5060 init_AOTAddressTable_sin(external_addresses);
5061 init_AOTAddressTable_sinh(external_addresses);
5062 init_AOTAddressTable_tan(external_addresses);
5063 init_AOTAddressTable_tanh(external_addresses);
5064 }
5065 #endif // INCLUDE_CDS
5066
5067 void StubGenerator_generate(CodeBuffer* code, BlobId blob_id, AOTStubData* stub_data) {
5068 StubGenerator g(code, blob_id, stub_data);
5069 }
5070
5071 #undef __