1 /*
2 * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "asm/macroAssembler.hpp"
27 #include "asm/macroAssembler.inline.hpp"
28 #include "gc/shared/barrierSet.hpp"
29 #include "gc/shared/barrierSetAssembler.hpp"
30 #include "interpreter/interpreter.hpp"
31 #include "nativeInst_x86.hpp"
32 #include "oops/instanceOop.hpp"
33 #include "oops/method.hpp"
34 #include "oops/objArrayKlass.hpp"
35 #include "oops/oop.inline.hpp"
36 #include "prims/methodHandles.hpp"
37 #include "runtime/frame.inline.hpp"
38 #include "runtime/handles.inline.hpp"
39 #include "runtime/sharedRuntime.hpp"
40 #include "runtime/stubCodeGenerator.hpp"
41 #include "runtime/stubRoutines.hpp"
42 #include "runtime/thread.inline.hpp"
43 #ifdef COMPILER2
44 #include "opto/runtime.hpp"
45 #endif
46
47 // Declaration and definition of StubGenerator (no .hpp file).
48 // For a more detailed description of the stub routine structure
49 // see the comment in stubRoutines.hpp
50
51 #define __ _masm->
52 #define a__ ((Assembler*)_masm)->
53
54 #ifdef PRODUCT
55 #define BLOCK_COMMENT(str) /* nothing */
56 #else
57 #define BLOCK_COMMENT(str) __ block_comment(str)
58 #endif
59
60 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
61
62 const int MXCSR_MASK = 0xFFC0; // Mask out any pending exceptions
63 const int FPU_CNTRL_WRD_MASK = 0xFFFF;
64
65 // -------------------------------------------------------------------------------------------------------------------------
66 // Stub Code definitions
67
68 class StubGenerator: public StubCodeGenerator {
69 private:
70
71 #ifdef PRODUCT
72 #define inc_counter_np(counter) ((void)0)
73 #else
74 void inc_counter_np_(int& counter) {
75 __ incrementl(ExternalAddress((address)&counter));
76 }
77 #define inc_counter_np(counter) \
78 BLOCK_COMMENT("inc_counter " #counter); \
79 inc_counter_np_(counter);
80 #endif //PRODUCT
81
inc_copy_counter_np(BasicType t)82 void inc_copy_counter_np(BasicType t) {
83 #ifndef PRODUCT
84 switch (t) {
85 case T_BYTE: inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); return;
86 case T_SHORT: inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); return;
87 case T_INT: inc_counter_np(SharedRuntime::_jint_array_copy_ctr); return;
88 case T_LONG: inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); return;
89 case T_OBJECT: inc_counter_np(SharedRuntime::_oop_array_copy_ctr); return;
90 default: ShouldNotReachHere();
91 }
92 #endif //PRODUCT
93 }
94
95 //------------------------------------------------------------------------------------------------------------------------
96 // Call stubs are used to call Java from C
97 //
98 // [ return_from_Java ] <--- rsp
99 // [ argument word n ]
100 // ...
101 // -N [ argument word 1 ]
102 // -7 [ Possible padding for stack alignment ]
103 // -6 [ Possible padding for stack alignment ]
104 // -5 [ Possible padding for stack alignment ]
105 // -4 [ mxcsr save ] <--- rsp_after_call
106 // -3 [ saved rbx, ]
107 // -2 [ saved rsi ]
108 // -1 [ saved rdi ]
109 // 0 [ saved rbp, ] <--- rbp,
110 // 1 [ return address ]
111 // 2 [ ptr. to call wrapper ]
112 // 3 [ result ]
113 // 4 [ result_type ]
114 // 5 [ method ]
115 // 6 [ entry_point ]
116 // 7 [ parameters ]
117 // 8 [ parameter_size ]
118 // 9 [ thread ]
119
120
generate_call_stub(address & return_address)121 address generate_call_stub(address& return_address) {
122 StubCodeMark mark(this, "StubRoutines", "call_stub");
123 address start = __ pc();
124
125 // stub code parameters / addresses
126 assert(frame::entry_frame_call_wrapper_offset == 2, "adjust this code");
127 bool sse_save = false;
128 const Address rsp_after_call(rbp, -4 * wordSize); // same as in generate_catch_exception()!
129 const int locals_count_in_bytes (4*wordSize);
130 const Address mxcsr_save (rbp, -4 * wordSize);
131 const Address saved_rbx (rbp, -3 * wordSize);
132 const Address saved_rsi (rbp, -2 * wordSize);
133 const Address saved_rdi (rbp, -1 * wordSize);
134 const Address result (rbp, 3 * wordSize);
135 const Address result_type (rbp, 4 * wordSize);
136 const Address method (rbp, 5 * wordSize);
137 const Address entry_point (rbp, 6 * wordSize);
138 const Address parameters (rbp, 7 * wordSize);
139 const Address parameter_size(rbp, 8 * wordSize);
140 const Address thread (rbp, 9 * wordSize); // same as in generate_catch_exception()!
141 sse_save = UseSSE > 0;
142
143 // stub code
144 __ enter();
145 __ movptr(rcx, parameter_size); // parameter counter
146 __ shlptr(rcx, Interpreter::logStackElementSize); // convert parameter count to bytes
147 __ addptr(rcx, locals_count_in_bytes); // reserve space for register saves
148 __ subptr(rsp, rcx);
149 __ andptr(rsp, -(StackAlignmentInBytes)); // Align stack
150
151 // save rdi, rsi, & rbx, according to C calling conventions
152 __ movptr(saved_rdi, rdi);
153 __ movptr(saved_rsi, rsi);
154 __ movptr(saved_rbx, rbx);
155
156 // save and initialize %mxcsr
157 if (sse_save) {
158 Label skip_ldmx;
159 __ stmxcsr(mxcsr_save);
160 __ movl(rax, mxcsr_save);
161 __ andl(rax, MXCSR_MASK); // Only check control and mask bits
162 ExternalAddress mxcsr_std(StubRoutines::addr_mxcsr_std());
163 __ cmp32(rax, mxcsr_std);
164 __ jcc(Assembler::equal, skip_ldmx);
165 __ ldmxcsr(mxcsr_std);
166 __ bind(skip_ldmx);
167 }
168
169 // make sure the control word is correct.
170 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std()));
171
172 #ifdef ASSERT
173 // make sure we have no pending exceptions
174 { Label L;
175 __ movptr(rcx, thread);
176 __ cmpptr(Address(rcx, Thread::pending_exception_offset()), (int32_t)NULL_WORD);
177 __ jcc(Assembler::equal, L);
178 __ stop("StubRoutines::call_stub: entered with pending exception");
179 __ bind(L);
180 }
181 #endif
182
183 // pass parameters if any
184 BLOCK_COMMENT("pass parameters if any");
185 Label parameters_done;
186 __ movl(rcx, parameter_size); // parameter counter
187 __ testl(rcx, rcx);
188 __ jcc(Assembler::zero, parameters_done);
189
190 // parameter passing loop
191
192 Label loop;
193 // Copy Java parameters in reverse order (receiver last)
194 // Note that the argument order is inverted in the process
195 // source is rdx[rcx: N-1..0]
196 // dest is rsp[rbx: 0..N-1]
197
198 __ movptr(rdx, parameters); // parameter pointer
199 __ xorptr(rbx, rbx);
200
201 __ BIND(loop);
202
203 // get parameter
204 __ movptr(rax, Address(rdx, rcx, Interpreter::stackElementScale(), -wordSize));
205 __ movptr(Address(rsp, rbx, Interpreter::stackElementScale(),
206 Interpreter::expr_offset_in_bytes(0)), rax); // store parameter
207 __ increment(rbx);
208 __ decrement(rcx);
209 __ jcc(Assembler::notZero, loop);
210
211 // call Java function
212 __ BIND(parameters_done);
213 __ movptr(rbx, method); // get Method*
214 __ movptr(rax, entry_point); // get entry_point
215 __ mov(rsi, rsp); // set sender sp
216 BLOCK_COMMENT("call Java function");
217 __ call(rax);
218
219 BLOCK_COMMENT("call_stub_return_address:");
220 return_address = __ pc();
221
222 #ifdef COMPILER2
223 {
224 Label L_skip;
225 if (UseSSE >= 2) {
226 __ verify_FPU(0, "call_stub_return");
227 } else {
228 for (int i = 1; i < 8; i++) {
229 __ ffree(i);
230 }
231
232 // UseSSE <= 1 so double result should be left on TOS
233 __ movl(rsi, result_type);
234 __ cmpl(rsi, T_DOUBLE);
235 __ jcc(Assembler::equal, L_skip);
236 if (UseSSE == 0) {
237 // UseSSE == 0 so float result should be left on TOS
238 __ cmpl(rsi, T_FLOAT);
239 __ jcc(Assembler::equal, L_skip);
240 }
241 __ ffree(0);
242 }
243 __ BIND(L_skip);
244 }
245 #endif // COMPILER2
246
247 // store result depending on type
248 // (everything that is not T_LONG, T_FLOAT or T_DOUBLE is treated as T_INT)
249 __ movptr(rdi, result);
250 Label is_long, is_float, is_double, exit;
251 __ movl(rsi, result_type);
252 __ cmpl(rsi, T_LONG);
253 __ jcc(Assembler::equal, is_long);
254 __ cmpl(rsi, T_FLOAT);
255 __ jcc(Assembler::equal, is_float);
256 __ cmpl(rsi, T_DOUBLE);
257 __ jcc(Assembler::equal, is_double);
258
259 // handle T_INT case
260 __ movl(Address(rdi, 0), rax);
261 __ BIND(exit);
262
263 // check that FPU stack is empty
264 __ verify_FPU(0, "generate_call_stub");
265
266 // pop parameters
267 __ lea(rsp, rsp_after_call);
268
269 // restore %mxcsr
270 if (sse_save) {
271 __ ldmxcsr(mxcsr_save);
272 }
273
274 // restore rdi, rsi and rbx,
275 __ movptr(rbx, saved_rbx);
276 __ movptr(rsi, saved_rsi);
277 __ movptr(rdi, saved_rdi);
278 __ addptr(rsp, 4*wordSize);
279
280 // return
281 __ pop(rbp);
282 __ ret(0);
283
284 // handle return types different from T_INT
285 __ BIND(is_long);
286 __ movl(Address(rdi, 0 * wordSize), rax);
287 __ movl(Address(rdi, 1 * wordSize), rdx);
288 __ jmp(exit);
289
290 __ BIND(is_float);
291 // interpreter uses xmm0 for return values
292 if (UseSSE >= 1) {
293 __ movflt(Address(rdi, 0), xmm0);
294 } else {
295 __ fstp_s(Address(rdi, 0));
296 }
297 __ jmp(exit);
298
299 __ BIND(is_double);
300 // interpreter uses xmm0 for return values
301 if (UseSSE >= 2) {
302 __ movdbl(Address(rdi, 0), xmm0);
303 } else {
304 __ fstp_d(Address(rdi, 0));
305 }
306 __ jmp(exit);
307
308 return start;
309 }
310
311
312 //------------------------------------------------------------------------------------------------------------------------
313 // Return point for a Java call if there's an exception thrown in Java code.
314 // The exception is caught and transformed into a pending exception stored in
315 // JavaThread that can be tested from within the VM.
316 //
317 // Note: Usually the parameters are removed by the callee. In case of an exception
318 // crossing an activation frame boundary, that is not the case if the callee
319 // is compiled code => need to setup the rsp.
320 //
321 // rax,: exception oop
322
generate_catch_exception()323 address generate_catch_exception() {
324 StubCodeMark mark(this, "StubRoutines", "catch_exception");
325 const Address rsp_after_call(rbp, -4 * wordSize); // same as in generate_call_stub()!
326 const Address thread (rbp, 9 * wordSize); // same as in generate_call_stub()!
327 address start = __ pc();
328
329 // get thread directly
330 __ movptr(rcx, thread);
331 #ifdef ASSERT
332 // verify that threads correspond
333 { Label L;
334 __ get_thread(rbx);
335 __ cmpptr(rbx, rcx);
336 __ jcc(Assembler::equal, L);
337 __ stop("StubRoutines::catch_exception: threads must correspond");
338 __ bind(L);
339 }
340 #endif
341 // set pending exception
342 __ verify_oop(rax);
343 __ movptr(Address(rcx, Thread::pending_exception_offset()), rax );
344 __ lea(Address(rcx, Thread::exception_file_offset ()),
345 ExternalAddress((address)__FILE__));
346 __ movl(Address(rcx, Thread::exception_line_offset ()), __LINE__ );
347 // complete return to VM
348 assert(StubRoutines::_call_stub_return_address != NULL, "_call_stub_return_address must have been generated before");
349 __ jump(RuntimeAddress(StubRoutines::_call_stub_return_address));
350
351 return start;
352 }
353
354
355 //------------------------------------------------------------------------------------------------------------------------
356 // Continuation point for runtime calls returning with a pending exception.
357 // The pending exception check happened in the runtime or native call stub.
358 // The pending exception in Thread is converted into a Java-level exception.
359 //
360 // Contract with Java-level exception handlers:
361 // rax: exception
362 // rdx: throwing pc
363 //
364 // NOTE: At entry of this stub, exception-pc must be on stack !!
365
generate_forward_exception()366 address generate_forward_exception() {
367 StubCodeMark mark(this, "StubRoutines", "forward exception");
368 address start = __ pc();
369 const Register thread = rcx;
370
371 // other registers used in this stub
372 const Register exception_oop = rax;
373 const Register handler_addr = rbx;
374 const Register exception_pc = rdx;
375
376 // Upon entry, the sp points to the return address returning into Java
377 // (interpreted or compiled) code; i.e., the return address becomes the
378 // throwing pc.
379 //
380 // Arguments pushed before the runtime call are still on the stack but
381 // the exception handler will reset the stack pointer -> ignore them.
382 // A potential result in registers can be ignored as well.
383
384 #ifdef ASSERT
385 // make sure this code is only executed if there is a pending exception
386 { Label L;
387 __ get_thread(thread);
388 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD);
389 __ jcc(Assembler::notEqual, L);
390 __ stop("StubRoutines::forward exception: no pending exception (1)");
391 __ bind(L);
392 }
393 #endif
394
395 // compute exception handler into rbx,
396 __ get_thread(thread);
397 __ movptr(exception_pc, Address(rsp, 0));
398 BLOCK_COMMENT("call exception_handler_for_return_address");
399 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), thread, exception_pc);
400 __ mov(handler_addr, rax);
401
402 // setup rax & rdx, remove return address & clear pending exception
403 __ get_thread(thread);
404 __ pop(exception_pc);
405 __ movptr(exception_oop, Address(thread, Thread::pending_exception_offset()));
406 __ movptr(Address(thread, Thread::pending_exception_offset()), NULL_WORD);
407
408 #ifdef ASSERT
409 // make sure exception is set
410 { Label L;
411 __ testptr(exception_oop, exception_oop);
412 __ jcc(Assembler::notEqual, L);
413 __ stop("StubRoutines::forward exception: no pending exception (2)");
414 __ bind(L);
415 }
416 #endif
417
418 // Verify that there is really a valid exception in RAX.
419 __ verify_oop(exception_oop);
420
421 // continue at exception handler (return address removed)
422 // rax: exception
423 // rbx: exception handler
424 // rdx: throwing pc
425 __ jmp(handler_addr);
426
427 return start;
428 }
429
430
431 //----------------------------------------------------------------------------------------------------
432 // Support for int32_t Atomic::xchg(int32_t exchange_value, volatile int32_t* dest)
433 //
434 // xchg exists as far back as 8086, lock needed for MP only
435 // Stack layout immediately after call:
436 //
437 // 0 [ret addr ] <--- rsp
438 // 1 [ ex ]
439 // 2 [ dest ]
440 //
441 // Result: *dest <- ex, return (old *dest)
442 //
443 // Note: win32 does not currently use this code
444
generate_atomic_xchg()445 address generate_atomic_xchg() {
446 StubCodeMark mark(this, "StubRoutines", "atomic_xchg");
447 address start = __ pc();
448
449 __ push(rdx);
450 Address exchange(rsp, 2 * wordSize);
451 Address dest_addr(rsp, 3 * wordSize);
452 __ movl(rax, exchange);
453 __ movptr(rdx, dest_addr);
454 __ xchgl(rax, Address(rdx, 0));
455 __ pop(rdx);
456 __ ret(0);
457
458 return start;
459 }
460
461 //----------------------------------------------------------------------------------------------------
462 // Support for void verify_mxcsr()
463 //
464 // This routine is used with -Xcheck:jni to verify that native
465 // JNI code does not return to Java code without restoring the
466 // MXCSR register to our expected state.
467
468
generate_verify_mxcsr()469 address generate_verify_mxcsr() {
470 StubCodeMark mark(this, "StubRoutines", "verify_mxcsr");
471 address start = __ pc();
472
473 const Address mxcsr_save(rsp, 0);
474
475 if (CheckJNICalls && UseSSE > 0 ) {
476 Label ok_ret;
477 ExternalAddress mxcsr_std(StubRoutines::addr_mxcsr_std());
478 __ push(rax);
479 __ subptr(rsp, wordSize); // allocate a temp location
480 __ stmxcsr(mxcsr_save);
481 __ movl(rax, mxcsr_save);
482 __ andl(rax, MXCSR_MASK);
483 __ cmp32(rax, mxcsr_std);
484 __ jcc(Assembler::equal, ok_ret);
485
486 __ warn("MXCSR changed by native JNI code.");
487
488 __ ldmxcsr(mxcsr_std);
489
490 __ bind(ok_ret);
491 __ addptr(rsp, wordSize);
492 __ pop(rax);
493 }
494
495 __ ret(0);
496
497 return start;
498 }
499
500
501 //---------------------------------------------------------------------------
502 // Support for void verify_fpu_cntrl_wrd()
503 //
504 // This routine is used with -Xcheck:jni to verify that native
505 // JNI code does not return to Java code without restoring the
506 // FP control word to our expected state.
507
generate_verify_fpu_cntrl_wrd()508 address generate_verify_fpu_cntrl_wrd() {
509 StubCodeMark mark(this, "StubRoutines", "verify_spcw");
510 address start = __ pc();
511
512 const Address fpu_cntrl_wrd_save(rsp, 0);
513
514 if (CheckJNICalls) {
515 Label ok_ret;
516 __ push(rax);
517 __ subptr(rsp, wordSize); // allocate a temp location
518 __ fnstcw(fpu_cntrl_wrd_save);
519 __ movl(rax, fpu_cntrl_wrd_save);
520 __ andl(rax, FPU_CNTRL_WRD_MASK);
521 ExternalAddress fpu_std(StubRoutines::addr_fpu_cntrl_wrd_std());
522 __ cmp32(rax, fpu_std);
523 __ jcc(Assembler::equal, ok_ret);
524
525 __ warn("Floating point control word changed by native JNI code.");
526
527 __ fldcw(fpu_std);
528
529 __ bind(ok_ret);
530 __ addptr(rsp, wordSize);
531 __ pop(rax);
532 }
533
534 __ ret(0);
535
536 return start;
537 }
538
539 //---------------------------------------------------------------------------
540 // Wrapper for slow-case handling of double-to-integer conversion
541 // d2i or f2i fast case failed either because it is nan or because
542 // of under/overflow.
543 // Input: FPU TOS: float value
544 // Output: rax, (rdx): integer (long) result
545
generate_d2i_wrapper(BasicType t,address fcn)546 address generate_d2i_wrapper(BasicType t, address fcn) {
547 StubCodeMark mark(this, "StubRoutines", "d2i_wrapper");
548 address start = __ pc();
549
550 // Capture info about frame layout
551 enum layout { FPUState_off = 0,
552 rbp_off = FPUStateSizeInWords,
553 rdi_off,
554 rsi_off,
555 rcx_off,
556 rbx_off,
557 saved_argument_off,
558 saved_argument_off2, // 2nd half of double
559 framesize
560 };
561
562 assert(FPUStateSizeInWords == 27, "update stack layout");
563
564 // Save outgoing argument to stack across push_FPU_state()
565 __ subptr(rsp, wordSize * 2);
566 __ fstp_d(Address(rsp, 0));
567
568 // Save CPU & FPU state
569 __ push(rbx);
570 __ push(rcx);
571 __ push(rsi);
572 __ push(rdi);
573 __ push(rbp);
574 __ push_FPU_state();
575
576 // push_FPU_state() resets the FP top of stack
577 // Load original double into FP top of stack
578 __ fld_d(Address(rsp, saved_argument_off * wordSize));
579 // Store double into stack as outgoing argument
580 __ subptr(rsp, wordSize*2);
581 __ fst_d(Address(rsp, 0));
582
583 // Prepare FPU for doing math in C-land
584 __ empty_FPU_stack();
585 // Call the C code to massage the double. Result in EAX
586 if (t == T_INT)
587 { BLOCK_COMMENT("SharedRuntime::d2i"); }
588 else if (t == T_LONG)
589 { BLOCK_COMMENT("SharedRuntime::d2l"); }
590 __ call_VM_leaf( fcn, 2 );
591
592 // Restore CPU & FPU state
593 __ pop_FPU_state();
594 __ pop(rbp);
595 __ pop(rdi);
596 __ pop(rsi);
597 __ pop(rcx);
598 __ pop(rbx);
599 __ addptr(rsp, wordSize * 2);
600
601 __ ret(0);
602
603 return start;
604 }
605
606
607 //----------------------------------------------------------------------------------------------------
608 // Non-destructive plausibility checks for oops
609
generate_verify_oop()610 address generate_verify_oop() {
611 StubCodeMark mark(this, "StubRoutines", "verify_oop");
612 address start = __ pc();
613
614 // Incoming arguments on stack after saving rax,:
615 //
616 // [tos ]: saved rdx
617 // [tos + 1]: saved EFLAGS
618 // [tos + 2]: return address
619 // [tos + 3]: char* error message
620 // [tos + 4]: oop object to verify
621 // [tos + 5]: saved rax, - saved by caller and bashed
622
623 Label exit, error;
624 __ pushf();
625 __ incrementl(ExternalAddress((address) StubRoutines::verify_oop_count_addr()));
626 __ push(rdx); // save rdx
627 // make sure object is 'reasonable'
628 __ movptr(rax, Address(rsp, 4 * wordSize)); // get object
629 __ testptr(rax, rax);
630 __ jcc(Assembler::zero, exit); // if obj is NULL it is ok
631
632 // Check if the oop is in the right area of memory
633 const int oop_mask = Universe::verify_oop_mask();
634 const int oop_bits = Universe::verify_oop_bits();
635 __ mov(rdx, rax);
636 __ andptr(rdx, oop_mask);
637 __ cmpptr(rdx, oop_bits);
638 __ jcc(Assembler::notZero, error);
639
640 // make sure klass is 'reasonable', which is not zero.
641 __ movptr(rax, Address(rax, oopDesc::klass_offset_in_bytes())); // get klass
642 __ testptr(rax, rax);
643 __ jcc(Assembler::zero, error); // if klass is NULL it is broken
644
645 // return if everything seems ok
646 __ bind(exit);
647 __ movptr(rax, Address(rsp, 5 * wordSize)); // get saved rax, back
648 __ pop(rdx); // restore rdx
649 __ popf(); // restore EFLAGS
650 __ ret(3 * wordSize); // pop arguments
651
652 // handle errors
653 __ bind(error);
654 __ movptr(rax, Address(rsp, 5 * wordSize)); // get saved rax, back
655 __ pop(rdx); // get saved rdx back
656 __ popf(); // get saved EFLAGS off stack -- will be ignored
657 __ pusha(); // push registers (eip = return address & msg are already pushed)
658 BLOCK_COMMENT("call MacroAssembler::debug");
659 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, MacroAssembler::debug32)));
660 __ popa();
661 __ ret(3 * wordSize); // pop arguments
662 return start;
663 }
664
665
666 // Copy 64 bytes chunks
667 //
668 // Inputs:
669 // from - source array address
670 // to_from - destination array address - from
671 // qword_count - 8-bytes element count, negative
672 //
xmm_copy_forward(Register from,Register to_from,Register qword_count)673 void xmm_copy_forward(Register from, Register to_from, Register qword_count) {
674 assert( UseSSE >= 2, "supported cpu only" );
675 Label L_copy_64_bytes_loop, L_copy_64_bytes, L_copy_8_bytes, L_exit;
676
677 // Copy 64-byte chunks
678 __ jmpb(L_copy_64_bytes);
679 __ align(OptoLoopAlignment);
680 __ BIND(L_copy_64_bytes_loop);
681
682 if (UseUnalignedLoadStores) {
683 if (UseAVX > 2) {
684 __ evmovdqul(xmm0, Address(from, 0), Assembler::AVX_512bit);
685 __ evmovdqul(Address(from, to_from, Address::times_1, 0), xmm0, Assembler::AVX_512bit);
686 } else if (UseAVX == 2) {
687 __ vmovdqu(xmm0, Address(from, 0));
688 __ vmovdqu(Address(from, to_from, Address::times_1, 0), xmm0);
689 __ vmovdqu(xmm1, Address(from, 32));
690 __ vmovdqu(Address(from, to_from, Address::times_1, 32), xmm1);
691 } else {
692 __ movdqu(xmm0, Address(from, 0));
693 __ movdqu(Address(from, to_from, Address::times_1, 0), xmm0);
694 __ movdqu(xmm1, Address(from, 16));
695 __ movdqu(Address(from, to_from, Address::times_1, 16), xmm1);
696 __ movdqu(xmm2, Address(from, 32));
697 __ movdqu(Address(from, to_from, Address::times_1, 32), xmm2);
698 __ movdqu(xmm3, Address(from, 48));
699 __ movdqu(Address(from, to_from, Address::times_1, 48), xmm3);
700 }
701 } else {
702 __ movq(xmm0, Address(from, 0));
703 __ movq(Address(from, to_from, Address::times_1, 0), xmm0);
704 __ movq(xmm1, Address(from, 8));
705 __ movq(Address(from, to_from, Address::times_1, 8), xmm1);
706 __ movq(xmm2, Address(from, 16));
707 __ movq(Address(from, to_from, Address::times_1, 16), xmm2);
708 __ movq(xmm3, Address(from, 24));
709 __ movq(Address(from, to_from, Address::times_1, 24), xmm3);
710 __ movq(xmm4, Address(from, 32));
711 __ movq(Address(from, to_from, Address::times_1, 32), xmm4);
712 __ movq(xmm5, Address(from, 40));
713 __ movq(Address(from, to_from, Address::times_1, 40), xmm5);
714 __ movq(xmm6, Address(from, 48));
715 __ movq(Address(from, to_from, Address::times_1, 48), xmm6);
716 __ movq(xmm7, Address(from, 56));
717 __ movq(Address(from, to_from, Address::times_1, 56), xmm7);
718 }
719
720 __ addl(from, 64);
721 __ BIND(L_copy_64_bytes);
722 __ subl(qword_count, 8);
723 __ jcc(Assembler::greaterEqual, L_copy_64_bytes_loop);
724
725 if (UseUnalignedLoadStores && (UseAVX == 2)) {
726 // clean upper bits of YMM registers
727 __ vpxor(xmm0, xmm0);
728 __ vpxor(xmm1, xmm1);
729 }
730 __ addl(qword_count, 8);
731 __ jccb(Assembler::zero, L_exit);
732 //
733 // length is too short, just copy qwords
734 //
735 __ BIND(L_copy_8_bytes);
736 __ movq(xmm0, Address(from, 0));
737 __ movq(Address(from, to_from, Address::times_1), xmm0);
738 __ addl(from, 8);
739 __ decrement(qword_count);
740 __ jcc(Assembler::greater, L_copy_8_bytes);
741 __ BIND(L_exit);
742 }
743
744 // Copy 64 bytes chunks
745 //
746 // Inputs:
747 // from - source array address
748 // to_from - destination array address - from
749 // qword_count - 8-bytes element count, negative
750 //
mmx_copy_forward(Register from,Register to_from,Register qword_count)751 void mmx_copy_forward(Register from, Register to_from, Register qword_count) {
752 assert( VM_Version::supports_mmx(), "supported cpu only" );
753 Label L_copy_64_bytes_loop, L_copy_64_bytes, L_copy_8_bytes, L_exit;
754 // Copy 64-byte chunks
755 __ jmpb(L_copy_64_bytes);
756 __ align(OptoLoopAlignment);
757 __ BIND(L_copy_64_bytes_loop);
758 __ movq(mmx0, Address(from, 0));
759 __ movq(mmx1, Address(from, 8));
760 __ movq(mmx2, Address(from, 16));
761 __ movq(Address(from, to_from, Address::times_1, 0), mmx0);
762 __ movq(mmx3, Address(from, 24));
763 __ movq(Address(from, to_from, Address::times_1, 8), mmx1);
764 __ movq(mmx4, Address(from, 32));
765 __ movq(Address(from, to_from, Address::times_1, 16), mmx2);
766 __ movq(mmx5, Address(from, 40));
767 __ movq(Address(from, to_from, Address::times_1, 24), mmx3);
768 __ movq(mmx6, Address(from, 48));
769 __ movq(Address(from, to_from, Address::times_1, 32), mmx4);
770 __ movq(mmx7, Address(from, 56));
771 __ movq(Address(from, to_from, Address::times_1, 40), mmx5);
772 __ movq(Address(from, to_from, Address::times_1, 48), mmx6);
773 __ movq(Address(from, to_from, Address::times_1, 56), mmx7);
774 __ addptr(from, 64);
775 __ BIND(L_copy_64_bytes);
776 __ subl(qword_count, 8);
777 __ jcc(Assembler::greaterEqual, L_copy_64_bytes_loop);
778 __ addl(qword_count, 8);
779 __ jccb(Assembler::zero, L_exit);
780 //
781 // length is too short, just copy qwords
782 //
783 __ BIND(L_copy_8_bytes);
784 __ movq(mmx0, Address(from, 0));
785 __ movq(Address(from, to_from, Address::times_1), mmx0);
786 __ addptr(from, 8);
787 __ decrement(qword_count);
788 __ jcc(Assembler::greater, L_copy_8_bytes);
789 __ BIND(L_exit);
790 __ emms();
791 }
792
generate_disjoint_copy(BasicType t,bool aligned,Address::ScaleFactor sf,address * entry,const char * name,bool dest_uninitialized=false)793 address generate_disjoint_copy(BasicType t, bool aligned,
794 Address::ScaleFactor sf,
795 address* entry, const char *name,
796 bool dest_uninitialized = false) {
797 __ align(CodeEntryAlignment);
798 StubCodeMark mark(this, "StubRoutines", name);
799 address start = __ pc();
800
801 Label L_0_count, L_exit, L_skip_align1, L_skip_align2, L_copy_byte;
802 Label L_copy_2_bytes, L_copy_4_bytes, L_copy_64_bytes;
803
804 int shift = Address::times_ptr - sf;
805
806 const Register from = rsi; // source array address
807 const Register to = rdi; // destination array address
808 const Register count = rcx; // elements count
809 const Register to_from = to; // (to - from)
810 const Register saved_to = rdx; // saved destination array address
811
812 __ enter(); // required for proper stackwalking of RuntimeStub frame
813 __ push(rsi);
814 __ push(rdi);
815 __ movptr(from , Address(rsp, 12+ 4));
816 __ movptr(to , Address(rsp, 12+ 8));
817 __ movl(count, Address(rsp, 12+ 12));
818
819 if (entry != NULL) {
820 *entry = __ pc(); // Entry point from conjoint arraycopy stub.
821 BLOCK_COMMENT("Entry:");
822 }
823
824 if (t == T_OBJECT) {
825 __ testl(count, count);
826 __ jcc(Assembler::zero, L_0_count);
827 }
828
829 DecoratorSet decorators = IN_HEAP | IS_ARRAY | ARRAYCOPY_DISJOINT;
830 if (dest_uninitialized) {
831 decorators |= IS_DEST_UNINITIALIZED;
832 }
833 if (aligned) {
834 decorators |= ARRAYCOPY_ALIGNED;
835 }
836
837 BarrierSetAssembler *bs = BarrierSet::barrier_set()->barrier_set_assembler();
838 bs->arraycopy_prologue(_masm, decorators, t, from, to, count);
839
840 __ subptr(to, from); // to --> to_from
841 __ cmpl(count, 2<<shift); // Short arrays (< 8 bytes) copy by element
842 __ jcc(Assembler::below, L_copy_4_bytes); // use unsigned cmp
843 if (!UseUnalignedLoadStores && !aligned && (t == T_BYTE || t == T_SHORT)) {
844 // align source address at 4 bytes address boundary
845 if (t == T_BYTE) {
846 // One byte misalignment happens only for byte arrays
847 __ testl(from, 1);
848 __ jccb(Assembler::zero, L_skip_align1);
849 __ movb(rax, Address(from, 0));
850 __ movb(Address(from, to_from, Address::times_1, 0), rax);
851 __ increment(from);
852 __ decrement(count);
853 __ BIND(L_skip_align1);
854 }
855 // Two bytes misalignment happens only for byte and short (char) arrays
856 __ testl(from, 2);
857 __ jccb(Assembler::zero, L_skip_align2);
858 __ movw(rax, Address(from, 0));
859 __ movw(Address(from, to_from, Address::times_1, 0), rax);
860 __ addptr(from, 2);
861 __ subl(count, 1<<(shift-1));
862 __ BIND(L_skip_align2);
863 }
864 if (!VM_Version::supports_mmx()) {
865 __ mov(rax, count); // save 'count'
866 __ shrl(count, shift); // bytes count
867 __ addptr(to_from, from);// restore 'to'
868 __ rep_mov();
869 __ subptr(to_from, from);// restore 'to_from'
870 __ mov(count, rax); // restore 'count'
871 __ jmpb(L_copy_2_bytes); // all dwords were copied
872 } else {
873 if (!UseUnalignedLoadStores) {
874 // align to 8 bytes, we know we are 4 byte aligned to start
875 __ testptr(from, 4);
876 __ jccb(Assembler::zero, L_copy_64_bytes);
877 __ movl(rax, Address(from, 0));
878 __ movl(Address(from, to_from, Address::times_1, 0), rax);
879 __ addptr(from, 4);
880 __ subl(count, 1<<shift);
881 }
882 __ BIND(L_copy_64_bytes);
883 __ mov(rax, count);
884 __ shrl(rax, shift+1); // 8 bytes chunk count
885 //
886 // Copy 8-byte chunks through MMX registers, 8 per iteration of the loop
887 //
888 if (UseXMMForArrayCopy) {
889 xmm_copy_forward(from, to_from, rax);
890 } else {
891 mmx_copy_forward(from, to_from, rax);
892 }
893 }
894 // copy tailing dword
895 __ BIND(L_copy_4_bytes);
896 __ testl(count, 1<<shift);
897 __ jccb(Assembler::zero, L_copy_2_bytes);
898 __ movl(rax, Address(from, 0));
899 __ movl(Address(from, to_from, Address::times_1, 0), rax);
900 if (t == T_BYTE || t == T_SHORT) {
901 __ addptr(from, 4);
902 __ BIND(L_copy_2_bytes);
903 // copy tailing word
904 __ testl(count, 1<<(shift-1));
905 __ jccb(Assembler::zero, L_copy_byte);
906 __ movw(rax, Address(from, 0));
907 __ movw(Address(from, to_from, Address::times_1, 0), rax);
908 if (t == T_BYTE) {
909 __ addptr(from, 2);
910 __ BIND(L_copy_byte);
911 // copy tailing byte
912 __ testl(count, 1);
913 __ jccb(Assembler::zero, L_exit);
914 __ movb(rax, Address(from, 0));
915 __ movb(Address(from, to_from, Address::times_1, 0), rax);
916 __ BIND(L_exit);
917 } else {
918 __ BIND(L_copy_byte);
919 }
920 } else {
921 __ BIND(L_copy_2_bytes);
922 }
923
924 __ movl(count, Address(rsp, 12+12)); // reread 'count'
925 bs->arraycopy_epilogue(_masm, decorators, t, from, to, count);
926
927 if (t == T_OBJECT) {
928 __ BIND(L_0_count);
929 }
930 inc_copy_counter_np(t);
931 __ pop(rdi);
932 __ pop(rsi);
933 __ leave(); // required for proper stackwalking of RuntimeStub frame
934 __ vzeroupper();
935 __ xorptr(rax, rax); // return 0
936 __ ret(0);
937 return start;
938 }
939
940
generate_fill(BasicType t,bool aligned,const char * name)941 address generate_fill(BasicType t, bool aligned, const char *name) {
942 __ align(CodeEntryAlignment);
943 StubCodeMark mark(this, "StubRoutines", name);
944 address start = __ pc();
945
946 BLOCK_COMMENT("Entry:");
947
948 const Register to = rdi; // source array address
949 const Register value = rdx; // value
950 const Register count = rsi; // elements count
951
952 __ enter(); // required for proper stackwalking of RuntimeStub frame
953 __ push(rsi);
954 __ push(rdi);
955 __ movptr(to , Address(rsp, 12+ 4));
956 __ movl(value, Address(rsp, 12+ 8));
957 __ movl(count, Address(rsp, 12+ 12));
958
959 __ generate_fill(t, aligned, to, value, count, rax, xmm0);
960
961 __ pop(rdi);
962 __ pop(rsi);
963 __ leave(); // required for proper stackwalking of RuntimeStub frame
964 __ ret(0);
965 return start;
966 }
967
generate_conjoint_copy(BasicType t,bool aligned,Address::ScaleFactor sf,address nooverlap_target,address * entry,const char * name,bool dest_uninitialized=false)968 address generate_conjoint_copy(BasicType t, bool aligned,
969 Address::ScaleFactor sf,
970 address nooverlap_target,
971 address* entry, const char *name,
972 bool dest_uninitialized = false) {
973 __ align(CodeEntryAlignment);
974 StubCodeMark mark(this, "StubRoutines", name);
975 address start = __ pc();
976
977 Label L_0_count, L_exit, L_skip_align1, L_skip_align2, L_copy_byte;
978 Label L_copy_2_bytes, L_copy_4_bytes, L_copy_8_bytes, L_copy_8_bytes_loop;
979
980 int shift = Address::times_ptr - sf;
981
982 const Register src = rax; // source array address
983 const Register dst = rdx; // destination array address
984 const Register from = rsi; // source array address
985 const Register to = rdi; // destination array address
986 const Register count = rcx; // elements count
987 const Register end = rax; // array end address
988
989 __ enter(); // required for proper stackwalking of RuntimeStub frame
990 __ push(rsi);
991 __ push(rdi);
992 __ movptr(src , Address(rsp, 12+ 4)); // from
993 __ movptr(dst , Address(rsp, 12+ 8)); // to
994 __ movl2ptr(count, Address(rsp, 12+12)); // count
995
996 if (entry != NULL) {
997 *entry = __ pc(); // Entry point from generic arraycopy stub.
998 BLOCK_COMMENT("Entry:");
999 }
1000
1001 // nooverlap_target expects arguments in rsi and rdi.
1002 __ mov(from, src);
1003 __ mov(to , dst);
1004
1005 // arrays overlap test: dispatch to disjoint stub if necessary.
1006 RuntimeAddress nooverlap(nooverlap_target);
1007 __ cmpptr(dst, src);
1008 __ lea(end, Address(src, count, sf, 0)); // src + count * elem_size
1009 __ jump_cc(Assembler::belowEqual, nooverlap);
1010 __ cmpptr(dst, end);
1011 __ jump_cc(Assembler::aboveEqual, nooverlap);
1012
1013 if (t == T_OBJECT) {
1014 __ testl(count, count);
1015 __ jcc(Assembler::zero, L_0_count);
1016 }
1017
1018 DecoratorSet decorators = IN_HEAP | IS_ARRAY;
1019 if (dest_uninitialized) {
1020 decorators |= IS_DEST_UNINITIALIZED;
1021 }
1022 if (aligned) {
1023 decorators |= ARRAYCOPY_ALIGNED;
1024 }
1025
1026 BarrierSetAssembler *bs = BarrierSet::barrier_set()->barrier_set_assembler();
1027 bs->arraycopy_prologue(_masm, decorators, t, from, to, count);
1028
1029 // copy from high to low
1030 __ cmpl(count, 2<<shift); // Short arrays (< 8 bytes) copy by element
1031 __ jcc(Assembler::below, L_copy_4_bytes); // use unsigned cmp
1032 if (t == T_BYTE || t == T_SHORT) {
1033 // Align the end of destination array at 4 bytes address boundary
1034 __ lea(end, Address(dst, count, sf, 0));
1035 if (t == T_BYTE) {
1036 // One byte misalignment happens only for byte arrays
1037 __ testl(end, 1);
1038 __ jccb(Assembler::zero, L_skip_align1);
1039 __ decrement(count);
1040 __ movb(rdx, Address(from, count, sf, 0));
1041 __ movb(Address(to, count, sf, 0), rdx);
1042 __ BIND(L_skip_align1);
1043 }
1044 // Two bytes misalignment happens only for byte and short (char) arrays
1045 __ testl(end, 2);
1046 __ jccb(Assembler::zero, L_skip_align2);
1047 __ subptr(count, 1<<(shift-1));
1048 __ movw(rdx, Address(from, count, sf, 0));
1049 __ movw(Address(to, count, sf, 0), rdx);
1050 __ BIND(L_skip_align2);
1051 __ cmpl(count, 2<<shift); // Short arrays (< 8 bytes) copy by element
1052 __ jcc(Assembler::below, L_copy_4_bytes);
1053 }
1054
1055 if (!VM_Version::supports_mmx()) {
1056 __ std();
1057 __ mov(rax, count); // Save 'count'
1058 __ mov(rdx, to); // Save 'to'
1059 __ lea(rsi, Address(from, count, sf, -4));
1060 __ lea(rdi, Address(to , count, sf, -4));
1061 __ shrptr(count, shift); // bytes count
1062 __ rep_mov();
1063 __ cld();
1064 __ mov(count, rax); // restore 'count'
1065 __ andl(count, (1<<shift)-1); // mask the number of rest elements
1066 __ movptr(from, Address(rsp, 12+4)); // reread 'from'
1067 __ mov(to, rdx); // restore 'to'
1068 __ jmpb(L_copy_2_bytes); // all dword were copied
1069 } else {
1070 // Align to 8 bytes the end of array. It is aligned to 4 bytes already.
1071 __ testptr(end, 4);
1072 __ jccb(Assembler::zero, L_copy_8_bytes);
1073 __ subl(count, 1<<shift);
1074 __ movl(rdx, Address(from, count, sf, 0));
1075 __ movl(Address(to, count, sf, 0), rdx);
1076 __ jmpb(L_copy_8_bytes);
1077
1078 __ align(OptoLoopAlignment);
1079 // Move 8 bytes
1080 __ BIND(L_copy_8_bytes_loop);
1081 if (UseXMMForArrayCopy) {
1082 __ movq(xmm0, Address(from, count, sf, 0));
1083 __ movq(Address(to, count, sf, 0), xmm0);
1084 } else {
1085 __ movq(mmx0, Address(from, count, sf, 0));
1086 __ movq(Address(to, count, sf, 0), mmx0);
1087 }
1088 __ BIND(L_copy_8_bytes);
1089 __ subl(count, 2<<shift);
1090 __ jcc(Assembler::greaterEqual, L_copy_8_bytes_loop);
1091 __ addl(count, 2<<shift);
1092 if (!UseXMMForArrayCopy) {
1093 __ emms();
1094 }
1095 }
1096 __ BIND(L_copy_4_bytes);
1097 // copy prefix qword
1098 __ testl(count, 1<<shift);
1099 __ jccb(Assembler::zero, L_copy_2_bytes);
1100 __ movl(rdx, Address(from, count, sf, -4));
1101 __ movl(Address(to, count, sf, -4), rdx);
1102
1103 if (t == T_BYTE || t == T_SHORT) {
1104 __ subl(count, (1<<shift));
1105 __ BIND(L_copy_2_bytes);
1106 // copy prefix dword
1107 __ testl(count, 1<<(shift-1));
1108 __ jccb(Assembler::zero, L_copy_byte);
1109 __ movw(rdx, Address(from, count, sf, -2));
1110 __ movw(Address(to, count, sf, -2), rdx);
1111 if (t == T_BYTE) {
1112 __ subl(count, 1<<(shift-1));
1113 __ BIND(L_copy_byte);
1114 // copy prefix byte
1115 __ testl(count, 1);
1116 __ jccb(Assembler::zero, L_exit);
1117 __ movb(rdx, Address(from, 0));
1118 __ movb(Address(to, 0), rdx);
1119 __ BIND(L_exit);
1120 } else {
1121 __ BIND(L_copy_byte);
1122 }
1123 } else {
1124 __ BIND(L_copy_2_bytes);
1125 }
1126
1127 __ movl2ptr(count, Address(rsp, 12+12)); // reread count
1128 bs->arraycopy_epilogue(_masm, decorators, t, from, to, count);
1129
1130 if (t == T_OBJECT) {
1131 __ BIND(L_0_count);
1132 }
1133 inc_copy_counter_np(t);
1134 __ pop(rdi);
1135 __ pop(rsi);
1136 __ leave(); // required for proper stackwalking of RuntimeStub frame
1137 __ xorptr(rax, rax); // return 0
1138 __ ret(0);
1139 return start;
1140 }
1141
1142
generate_disjoint_long_copy(address * entry,const char * name)1143 address generate_disjoint_long_copy(address* entry, const char *name) {
1144 __ align(CodeEntryAlignment);
1145 StubCodeMark mark(this, "StubRoutines", name);
1146 address start = __ pc();
1147
1148 Label L_copy_8_bytes, L_copy_8_bytes_loop;
1149 const Register from = rax; // source array address
1150 const Register to = rdx; // destination array address
1151 const Register count = rcx; // elements count
1152 const Register to_from = rdx; // (to - from)
1153
1154 __ enter(); // required for proper stackwalking of RuntimeStub frame
1155 __ movptr(from , Address(rsp, 8+0)); // from
1156 __ movptr(to , Address(rsp, 8+4)); // to
1157 __ movl2ptr(count, Address(rsp, 8+8)); // count
1158
1159 *entry = __ pc(); // Entry point from conjoint arraycopy stub.
1160 BLOCK_COMMENT("Entry:");
1161
1162 __ subptr(to, from); // to --> to_from
1163 if (VM_Version::supports_mmx()) {
1164 if (UseXMMForArrayCopy) {
1165 xmm_copy_forward(from, to_from, count);
1166 } else {
1167 mmx_copy_forward(from, to_from, count);
1168 }
1169 } else {
1170 __ jmpb(L_copy_8_bytes);
1171 __ align(OptoLoopAlignment);
1172 __ BIND(L_copy_8_bytes_loop);
1173 __ fild_d(Address(from, 0));
1174 __ fistp_d(Address(from, to_from, Address::times_1));
1175 __ addptr(from, 8);
1176 __ BIND(L_copy_8_bytes);
1177 __ decrement(count);
1178 __ jcc(Assembler::greaterEqual, L_copy_8_bytes_loop);
1179 }
1180 inc_copy_counter_np(T_LONG);
1181 __ leave(); // required for proper stackwalking of RuntimeStub frame
1182 __ vzeroupper();
1183 __ xorptr(rax, rax); // return 0
1184 __ ret(0);
1185 return start;
1186 }
1187
generate_conjoint_long_copy(address nooverlap_target,address * entry,const char * name)1188 address generate_conjoint_long_copy(address nooverlap_target,
1189 address* entry, const char *name) {
1190 __ align(CodeEntryAlignment);
1191 StubCodeMark mark(this, "StubRoutines", name);
1192 address start = __ pc();
1193
1194 Label L_copy_8_bytes, L_copy_8_bytes_loop;
1195 const Register from = rax; // source array address
1196 const Register to = rdx; // destination array address
1197 const Register count = rcx; // elements count
1198 const Register end_from = rax; // source array end address
1199
1200 __ enter(); // required for proper stackwalking of RuntimeStub frame
1201 __ movptr(from , Address(rsp, 8+0)); // from
1202 __ movptr(to , Address(rsp, 8+4)); // to
1203 __ movl2ptr(count, Address(rsp, 8+8)); // count
1204
1205 *entry = __ pc(); // Entry point from generic arraycopy stub.
1206 BLOCK_COMMENT("Entry:");
1207
1208 // arrays overlap test
1209 __ cmpptr(to, from);
1210 RuntimeAddress nooverlap(nooverlap_target);
1211 __ jump_cc(Assembler::belowEqual, nooverlap);
1212 __ lea(end_from, Address(from, count, Address::times_8, 0));
1213 __ cmpptr(to, end_from);
1214 __ movptr(from, Address(rsp, 8)); // from
1215 __ jump_cc(Assembler::aboveEqual, nooverlap);
1216
1217 __ jmpb(L_copy_8_bytes);
1218
1219 __ align(OptoLoopAlignment);
1220 __ BIND(L_copy_8_bytes_loop);
1221 if (VM_Version::supports_mmx()) {
1222 if (UseXMMForArrayCopy) {
1223 __ movq(xmm0, Address(from, count, Address::times_8));
1224 __ movq(Address(to, count, Address::times_8), xmm0);
1225 } else {
1226 __ movq(mmx0, Address(from, count, Address::times_8));
1227 __ movq(Address(to, count, Address::times_8), mmx0);
1228 }
1229 } else {
1230 __ fild_d(Address(from, count, Address::times_8));
1231 __ fistp_d(Address(to, count, Address::times_8));
1232 }
1233 __ BIND(L_copy_8_bytes);
1234 __ decrement(count);
1235 __ jcc(Assembler::greaterEqual, L_copy_8_bytes_loop);
1236
1237 if (VM_Version::supports_mmx() && !UseXMMForArrayCopy) {
1238 __ emms();
1239 }
1240 inc_copy_counter_np(T_LONG);
1241 __ leave(); // required for proper stackwalking of RuntimeStub frame
1242 __ xorptr(rax, rax); // return 0
1243 __ ret(0);
1244 return start;
1245 }
1246
1247
1248 // Helper for generating a dynamic type check.
1249 // The sub_klass must be one of {rbx, rdx, rsi}.
1250 // The temp is killed.
generate_type_check(Register sub_klass,Address & super_check_offset_addr,Address & super_klass_addr,Register temp,Label * L_success,Label * L_failure)1251 void generate_type_check(Register sub_klass,
1252 Address& super_check_offset_addr,
1253 Address& super_klass_addr,
1254 Register temp,
1255 Label* L_success, Label* L_failure) {
1256 BLOCK_COMMENT("type_check:");
1257
1258 Label L_fallthrough;
1259 #define LOCAL_JCC(assembler_con, label_ptr) \
1260 if (label_ptr != NULL) __ jcc(assembler_con, *(label_ptr)); \
1261 else __ jcc(assembler_con, L_fallthrough) /*omit semi*/
1262
1263 // The following is a strange variation of the fast path which requires
1264 // one less register, because needed values are on the argument stack.
1265 // __ check_klass_subtype_fast_path(sub_klass, *super_klass*, temp,
1266 // L_success, L_failure, NULL);
1267 assert_different_registers(sub_klass, temp);
1268
1269 int sc_offset = in_bytes(Klass::secondary_super_cache_offset());
1270
1271 // if the pointers are equal, we are done (e.g., String[] elements)
1272 __ cmpptr(sub_klass, super_klass_addr);
1273 LOCAL_JCC(Assembler::equal, L_success);
1274
1275 // check the supertype display:
1276 __ movl2ptr(temp, super_check_offset_addr);
1277 Address super_check_addr(sub_klass, temp, Address::times_1, 0);
1278 __ movptr(temp, super_check_addr); // load displayed supertype
1279 __ cmpptr(temp, super_klass_addr); // test the super type
1280 LOCAL_JCC(Assembler::equal, L_success);
1281
1282 // if it was a primary super, we can just fail immediately
1283 __ cmpl(super_check_offset_addr, sc_offset);
1284 LOCAL_JCC(Assembler::notEqual, L_failure);
1285
1286 // The repne_scan instruction uses fixed registers, which will get spilled.
1287 // We happen to know this works best when super_klass is in rax.
1288 Register super_klass = temp;
1289 __ movptr(super_klass, super_klass_addr);
1290 __ check_klass_subtype_slow_path(sub_klass, super_klass, noreg, noreg,
1291 L_success, L_failure);
1292
1293 __ bind(L_fallthrough);
1294
1295 if (L_success == NULL) { BLOCK_COMMENT("L_success:"); }
1296 if (L_failure == NULL) { BLOCK_COMMENT("L_failure:"); }
1297
1298 #undef LOCAL_JCC
1299 }
1300
1301 //
1302 // Generate checkcasting array copy stub
1303 //
1304 // Input:
1305 // 4(rsp) - source array address
1306 // 8(rsp) - destination array address
1307 // 12(rsp) - element count, can be zero
1308 // 16(rsp) - size_t ckoff (super_check_offset)
1309 // 20(rsp) - oop ckval (super_klass)
1310 //
1311 // Output:
1312 // rax, == 0 - success
1313 // rax, == -1^K - failure, where K is partial transfer count
1314 //
generate_checkcast_copy(const char * name,address * entry,bool dest_uninitialized=false)1315 address generate_checkcast_copy(const char *name, address* entry, bool dest_uninitialized = false) {
1316 __ align(CodeEntryAlignment);
1317 StubCodeMark mark(this, "StubRoutines", name);
1318 address start = __ pc();
1319
1320 Label L_load_element, L_store_element, L_do_card_marks, L_done;
1321
1322 // register use:
1323 // rax, rdx, rcx -- loop control (end_from, end_to, count)
1324 // rdi, rsi -- element access (oop, klass)
1325 // rbx, -- temp
1326 const Register from = rax; // source array address
1327 const Register to = rdx; // destination array address
1328 const Register length = rcx; // elements count
1329 const Register elem = rdi; // each oop copied
1330 const Register elem_klass = rsi; // each elem._klass (sub_klass)
1331 const Register temp = rbx; // lone remaining temp
1332
1333 __ enter(); // required for proper stackwalking of RuntimeStub frame
1334
1335 __ push(rsi);
1336 __ push(rdi);
1337 __ push(rbx);
1338
1339 Address from_arg(rsp, 16+ 4); // from
1340 Address to_arg(rsp, 16+ 8); // to
1341 Address length_arg(rsp, 16+12); // elements count
1342 Address ckoff_arg(rsp, 16+16); // super_check_offset
1343 Address ckval_arg(rsp, 16+20); // super_klass
1344
1345 // Load up:
1346 __ movptr(from, from_arg);
1347 __ movptr(to, to_arg);
1348 __ movl2ptr(length, length_arg);
1349
1350 if (entry != NULL) {
1351 *entry = __ pc(); // Entry point from generic arraycopy stub.
1352 BLOCK_COMMENT("Entry:");
1353 }
1354
1355 //---------------------------------------------------------------
1356 // Assembler stub will be used for this call to arraycopy
1357 // if the two arrays are subtypes of Object[] but the
1358 // destination array type is not equal to or a supertype
1359 // of the source type. Each element must be separately
1360 // checked.
1361
1362 // Loop-invariant addresses. They are exclusive end pointers.
1363 Address end_from_addr(from, length, Address::times_ptr, 0);
1364 Address end_to_addr(to, length, Address::times_ptr, 0);
1365
1366 Register end_from = from; // re-use
1367 Register end_to = to; // re-use
1368 Register count = length; // re-use
1369
1370 // Loop-variant addresses. They assume post-incremented count < 0.
1371 Address from_element_addr(end_from, count, Address::times_ptr, 0);
1372 Address to_element_addr(end_to, count, Address::times_ptr, 0);
1373 Address elem_klass_addr(elem, oopDesc::klass_offset_in_bytes());
1374
1375 DecoratorSet decorators = IN_HEAP | IS_ARRAY | ARRAYCOPY_CHECKCAST;
1376 if (dest_uninitialized) {
1377 decorators |= IS_DEST_UNINITIALIZED;
1378 }
1379
1380 BasicType type = T_OBJECT;
1381 BarrierSetAssembler *bs = BarrierSet::barrier_set()->barrier_set_assembler();
1382 bs->arraycopy_prologue(_masm, decorators, type, from, to, count);
1383
1384 // Copy from low to high addresses, indexed from the end of each array.
1385 __ lea(end_from, end_from_addr);
1386 __ lea(end_to, end_to_addr);
1387 assert(length == count, ""); // else fix next line:
1388 __ negptr(count); // negate and test the length
1389 __ jccb(Assembler::notZero, L_load_element);
1390
1391 // Empty array: Nothing to do.
1392 __ xorptr(rax, rax); // return 0 on (trivial) success
1393 __ jmp(L_done);
1394
1395 // ======== begin loop ========
1396 // (Loop is rotated; its entry is L_load_element.)
1397 // Loop control:
1398 // for (count = -count; count != 0; count++)
1399 // Base pointers src, dst are biased by 8*count,to last element.
1400 __ align(OptoLoopAlignment);
1401
1402 __ BIND(L_store_element);
1403 __ movptr(to_element_addr, elem); // store the oop
1404 __ increment(count); // increment the count toward zero
1405 __ jccb(Assembler::zero, L_do_card_marks);
1406
1407 // ======== loop entry is here ========
1408 __ BIND(L_load_element);
1409 __ movptr(elem, from_element_addr); // load the oop
1410 __ testptr(elem, elem);
1411 __ jccb(Assembler::zero, L_store_element);
1412
1413 // (Could do a trick here: Remember last successful non-null
1414 // element stored and make a quick oop equality check on it.)
1415
1416 __ movptr(elem_klass, elem_klass_addr); // query the object klass
1417 generate_type_check(elem_klass, ckoff_arg, ckval_arg, temp,
1418 &L_store_element, NULL);
1419 // (On fall-through, we have failed the element type check.)
1420 // ======== end loop ========
1421
1422 // It was a real error; we must depend on the caller to finish the job.
1423 // Register "count" = -1 * number of *remaining* oops, length_arg = *total* oops.
1424 // Emit GC store barriers for the oops we have copied (length_arg + count),
1425 // and report their number to the caller.
1426 assert_different_registers(to, count, rax);
1427 Label L_post_barrier;
1428 __ addl(count, length_arg); // transfers = (length - remaining)
1429 __ movl2ptr(rax, count); // save the value
1430 __ notptr(rax); // report (-1^K) to caller (does not affect flags)
1431 __ jccb(Assembler::notZero, L_post_barrier);
1432 __ jmp(L_done); // K == 0, nothing was copied, skip post barrier
1433
1434 // Come here on success only.
1435 __ BIND(L_do_card_marks);
1436 __ xorptr(rax, rax); // return 0 on success
1437 __ movl2ptr(count, length_arg);
1438
1439 __ BIND(L_post_barrier);
1440 __ movptr(to, to_arg); // reload
1441 bs->arraycopy_epilogue(_masm, decorators, type, from, to, count);
1442
1443 // Common exit point (success or failure).
1444 __ BIND(L_done);
1445 __ pop(rbx);
1446 __ pop(rdi);
1447 __ pop(rsi);
1448 inc_counter_np(SharedRuntime::_checkcast_array_copy_ctr);
1449 __ leave(); // required for proper stackwalking of RuntimeStub frame
1450 __ ret(0);
1451
1452 return start;
1453 }
1454
1455 //
1456 // Generate 'unsafe' array copy stub
1457 // Though just as safe as the other stubs, it takes an unscaled
1458 // size_t argument instead of an element count.
1459 //
1460 // Input:
1461 // 4(rsp) - source array address
1462 // 8(rsp) - destination array address
1463 // 12(rsp) - byte count, can be zero
1464 //
1465 // Output:
1466 // rax, == 0 - success
1467 // rax, == -1 - need to call System.arraycopy
1468 //
1469 // Examines the alignment of the operands and dispatches
1470 // to a long, int, short, or byte copy loop.
1471 //
generate_unsafe_copy(const char * name,address byte_copy_entry,address short_copy_entry,address int_copy_entry,address long_copy_entry)1472 address generate_unsafe_copy(const char *name,
1473 address byte_copy_entry,
1474 address short_copy_entry,
1475 address int_copy_entry,
1476 address long_copy_entry) {
1477
1478 Label L_long_aligned, L_int_aligned, L_short_aligned;
1479
1480 __ align(CodeEntryAlignment);
1481 StubCodeMark mark(this, "StubRoutines", name);
1482 address start = __ pc();
1483
1484 const Register from = rax; // source array address
1485 const Register to = rdx; // destination array address
1486 const Register count = rcx; // elements count
1487
1488 __ enter(); // required for proper stackwalking of RuntimeStub frame
1489 __ push(rsi);
1490 __ push(rdi);
1491 Address from_arg(rsp, 12+ 4); // from
1492 Address to_arg(rsp, 12+ 8); // to
1493 Address count_arg(rsp, 12+12); // byte count
1494
1495 // Load up:
1496 __ movptr(from , from_arg);
1497 __ movptr(to , to_arg);
1498 __ movl2ptr(count, count_arg);
1499
1500 // bump this on entry, not on exit:
1501 inc_counter_np(SharedRuntime::_unsafe_array_copy_ctr);
1502
1503 const Register bits = rsi;
1504 __ mov(bits, from);
1505 __ orptr(bits, to);
1506 __ orptr(bits, count);
1507
1508 __ testl(bits, BytesPerLong-1);
1509 __ jccb(Assembler::zero, L_long_aligned);
1510
1511 __ testl(bits, BytesPerInt-1);
1512 __ jccb(Assembler::zero, L_int_aligned);
1513
1514 __ testl(bits, BytesPerShort-1);
1515 __ jump_cc(Assembler::notZero, RuntimeAddress(byte_copy_entry));
1516
1517 __ BIND(L_short_aligned);
1518 __ shrptr(count, LogBytesPerShort); // size => short_count
1519 __ movl(count_arg, count); // update 'count'
1520 __ jump(RuntimeAddress(short_copy_entry));
1521
1522 __ BIND(L_int_aligned);
1523 __ shrptr(count, LogBytesPerInt); // size => int_count
1524 __ movl(count_arg, count); // update 'count'
1525 __ jump(RuntimeAddress(int_copy_entry));
1526
1527 __ BIND(L_long_aligned);
1528 __ shrptr(count, LogBytesPerLong); // size => qword_count
1529 __ movl(count_arg, count); // update 'count'
1530 __ pop(rdi); // Do pops here since jlong_arraycopy stub does not do it.
1531 __ pop(rsi);
1532 __ jump(RuntimeAddress(long_copy_entry));
1533
1534 return start;
1535 }
1536
1537
1538 // Perform range checks on the proposed arraycopy.
1539 // Smashes src_pos and dst_pos. (Uses them up for temps.)
arraycopy_range_checks(Register src,Register src_pos,Register dst,Register dst_pos,Address & length,Label & L_failed)1540 void arraycopy_range_checks(Register src,
1541 Register src_pos,
1542 Register dst,
1543 Register dst_pos,
1544 Address& length,
1545 Label& L_failed) {
1546 BLOCK_COMMENT("arraycopy_range_checks:");
1547 const Register src_end = src_pos; // source array end position
1548 const Register dst_end = dst_pos; // destination array end position
1549 __ addl(src_end, length); // src_pos + length
1550 __ addl(dst_end, length); // dst_pos + length
1551
1552 // if (src_pos + length > arrayOop(src)->length() ) FAIL;
1553 __ cmpl(src_end, Address(src, arrayOopDesc::length_offset_in_bytes()));
1554 __ jcc(Assembler::above, L_failed);
1555
1556 // if (dst_pos + length > arrayOop(dst)->length() ) FAIL;
1557 __ cmpl(dst_end, Address(dst, arrayOopDesc::length_offset_in_bytes()));
1558 __ jcc(Assembler::above, L_failed);
1559
1560 BLOCK_COMMENT("arraycopy_range_checks done");
1561 }
1562
1563
1564 //
1565 // Generate generic array copy stubs
1566 //
1567 // Input:
1568 // 4(rsp) - src oop
1569 // 8(rsp) - src_pos
1570 // 12(rsp) - dst oop
1571 // 16(rsp) - dst_pos
1572 // 20(rsp) - element count
1573 //
1574 // Output:
1575 // rax, == 0 - success
1576 // rax, == -1^K - failure, where K is partial transfer count
1577 //
generate_generic_copy(const char * name,address entry_jbyte_arraycopy,address entry_jshort_arraycopy,address entry_jint_arraycopy,address entry_oop_arraycopy,address entry_jlong_arraycopy,address entry_checkcast_arraycopy)1578 address generate_generic_copy(const char *name,
1579 address entry_jbyte_arraycopy,
1580 address entry_jshort_arraycopy,
1581 address entry_jint_arraycopy,
1582 address entry_oop_arraycopy,
1583 address entry_jlong_arraycopy,
1584 address entry_checkcast_arraycopy) {
1585 Label L_failed, L_failed_0, L_objArray;
1586
1587 { int modulus = CodeEntryAlignment;
1588 int target = modulus - 5; // 5 = sizeof jmp(L_failed)
1589 int advance = target - (__ offset() % modulus);
1590 if (advance < 0) advance += modulus;
1591 if (advance > 0) __ nop(advance);
1592 }
1593 StubCodeMark mark(this, "StubRoutines", name);
1594
1595 // Short-hop target to L_failed. Makes for denser prologue code.
1596 __ BIND(L_failed_0);
1597 __ jmp(L_failed);
1598 assert(__ offset() % CodeEntryAlignment == 0, "no further alignment needed");
1599
1600 __ align(CodeEntryAlignment);
1601 address start = __ pc();
1602
1603 __ enter(); // required for proper stackwalking of RuntimeStub frame
1604 __ push(rsi);
1605 __ push(rdi);
1606
1607 // bump this on entry, not on exit:
1608 inc_counter_np(SharedRuntime::_generic_array_copy_ctr);
1609
1610 // Input values
1611 Address SRC (rsp, 12+ 4);
1612 Address SRC_POS (rsp, 12+ 8);
1613 Address DST (rsp, 12+12);
1614 Address DST_POS (rsp, 12+16);
1615 Address LENGTH (rsp, 12+20);
1616
1617 //-----------------------------------------------------------------------
1618 // Assembler stub will be used for this call to arraycopy
1619 // if the following conditions are met:
1620 //
1621 // (1) src and dst must not be null.
1622 // (2) src_pos must not be negative.
1623 // (3) dst_pos must not be negative.
1624 // (4) length must not be negative.
1625 // (5) src klass and dst klass should be the same and not NULL.
1626 // (6) src and dst should be arrays.
1627 // (7) src_pos + length must not exceed length of src.
1628 // (8) dst_pos + length must not exceed length of dst.
1629 //
1630
1631 const Register src = rax; // source array oop
1632 const Register src_pos = rsi;
1633 const Register dst = rdx; // destination array oop
1634 const Register dst_pos = rdi;
1635 const Register length = rcx; // transfer count
1636
1637 // if (src == NULL) return -1;
1638 __ movptr(src, SRC); // src oop
1639 __ testptr(src, src);
1640 __ jccb(Assembler::zero, L_failed_0);
1641
1642 // if (src_pos < 0) return -1;
1643 __ movl2ptr(src_pos, SRC_POS); // src_pos
1644 __ testl(src_pos, src_pos);
1645 __ jccb(Assembler::negative, L_failed_0);
1646
1647 // if (dst == NULL) return -1;
1648 __ movptr(dst, DST); // dst oop
1649 __ testptr(dst, dst);
1650 __ jccb(Assembler::zero, L_failed_0);
1651
1652 // if (dst_pos < 0) return -1;
1653 __ movl2ptr(dst_pos, DST_POS); // dst_pos
1654 __ testl(dst_pos, dst_pos);
1655 __ jccb(Assembler::negative, L_failed_0);
1656
1657 // if (length < 0) return -1;
1658 __ movl2ptr(length, LENGTH); // length
1659 __ testl(length, length);
1660 __ jccb(Assembler::negative, L_failed_0);
1661
1662 // if (src->klass() == NULL) return -1;
1663 Address src_klass_addr(src, oopDesc::klass_offset_in_bytes());
1664 Address dst_klass_addr(dst, oopDesc::klass_offset_in_bytes());
1665 const Register rcx_src_klass = rcx; // array klass
1666 __ movptr(rcx_src_klass, Address(src, oopDesc::klass_offset_in_bytes()));
1667
1668 #ifdef ASSERT
1669 // assert(src->klass() != NULL);
1670 BLOCK_COMMENT("assert klasses not null");
1671 { Label L1, L2;
1672 __ testptr(rcx_src_klass, rcx_src_klass);
1673 __ jccb(Assembler::notZero, L2); // it is broken if klass is NULL
1674 __ bind(L1);
1675 __ stop("broken null klass");
1676 __ bind(L2);
1677 __ cmpptr(dst_klass_addr, (int32_t)NULL_WORD);
1678 __ jccb(Assembler::equal, L1); // this would be broken also
1679 BLOCK_COMMENT("assert done");
1680 }
1681 #endif //ASSERT
1682
1683 // Load layout helper (32-bits)
1684 //
1685 // |array_tag| | header_size | element_type | |log2_element_size|
1686 // 32 30 24 16 8 2 0
1687 //
1688 // array_tag: typeArray = 0x3, objArray = 0x2, non-array = 0x0
1689 //
1690
1691 int lh_offset = in_bytes(Klass::layout_helper_offset());
1692 Address src_klass_lh_addr(rcx_src_klass, lh_offset);
1693
1694 // Handle objArrays completely differently...
1695 jint objArray_lh = Klass::array_layout_helper(T_OBJECT);
1696 __ cmpl(src_klass_lh_addr, objArray_lh);
1697 __ jcc(Assembler::equal, L_objArray);
1698
1699 // if (src->klass() != dst->klass()) return -1;
1700 __ cmpptr(rcx_src_klass, dst_klass_addr);
1701 __ jccb(Assembler::notEqual, L_failed_0);
1702
1703 const Register rcx_lh = rcx; // layout helper
1704 assert(rcx_lh == rcx_src_klass, "known alias");
1705 __ movl(rcx_lh, src_klass_lh_addr);
1706
1707 // if (!src->is_Array()) return -1;
1708 __ cmpl(rcx_lh, Klass::_lh_neutral_value);
1709 __ jcc(Assembler::greaterEqual, L_failed_0); // signed cmp
1710
1711 // At this point, it is known to be a typeArray (array_tag 0x3).
1712 #ifdef ASSERT
1713 { Label L;
1714 __ cmpl(rcx_lh, (Klass::_lh_array_tag_type_value << Klass::_lh_array_tag_shift));
1715 __ jcc(Assembler::greaterEqual, L); // signed cmp
1716 __ stop("must be a primitive array");
1717 __ bind(L);
1718 }
1719 #endif
1720
1721 assert_different_registers(src, src_pos, dst, dst_pos, rcx_lh);
1722 arraycopy_range_checks(src, src_pos, dst, dst_pos, LENGTH, L_failed);
1723
1724 // TypeArrayKlass
1725 //
1726 // src_addr = (src + array_header_in_bytes()) + (src_pos << log2elemsize);
1727 // dst_addr = (dst + array_header_in_bytes()) + (dst_pos << log2elemsize);
1728 //
1729 const Register rsi_offset = rsi; // array offset
1730 const Register src_array = src; // src array offset
1731 const Register dst_array = dst; // dst array offset
1732 const Register rdi_elsize = rdi; // log2 element size
1733
1734 __ mov(rsi_offset, rcx_lh);
1735 __ shrptr(rsi_offset, Klass::_lh_header_size_shift);
1736 __ andptr(rsi_offset, Klass::_lh_header_size_mask); // array_offset
1737 __ addptr(src_array, rsi_offset); // src array offset
1738 __ addptr(dst_array, rsi_offset); // dst array offset
1739 __ andptr(rcx_lh, Klass::_lh_log2_element_size_mask); // log2 elsize
1740
1741 // next registers should be set before the jump to corresponding stub
1742 const Register from = src; // source array address
1743 const Register to = dst; // destination array address
1744 const Register count = rcx; // elements count
1745 // some of them should be duplicated on stack
1746 #define FROM Address(rsp, 12+ 4)
1747 #define TO Address(rsp, 12+ 8) // Not used now
1748 #define COUNT Address(rsp, 12+12) // Only for oop arraycopy
1749
1750 BLOCK_COMMENT("scale indexes to element size");
1751 __ movl2ptr(rsi, SRC_POS); // src_pos
1752 __ shlptr(rsi); // src_pos << rcx (log2 elsize)
1753 assert(src_array == from, "");
1754 __ addptr(from, rsi); // from = src_array + SRC_POS << log2 elsize
1755 __ movl2ptr(rdi, DST_POS); // dst_pos
1756 __ shlptr(rdi); // dst_pos << rcx (log2 elsize)
1757 assert(dst_array == to, "");
1758 __ addptr(to, rdi); // to = dst_array + DST_POS << log2 elsize
1759 __ movptr(FROM, from); // src_addr
1760 __ mov(rdi_elsize, rcx_lh); // log2 elsize
1761 __ movl2ptr(count, LENGTH); // elements count
1762
1763 BLOCK_COMMENT("choose copy loop based on element size");
1764 __ cmpl(rdi_elsize, 0);
1765
1766 __ jump_cc(Assembler::equal, RuntimeAddress(entry_jbyte_arraycopy));
1767 __ cmpl(rdi_elsize, LogBytesPerShort);
1768 __ jump_cc(Assembler::equal, RuntimeAddress(entry_jshort_arraycopy));
1769 __ cmpl(rdi_elsize, LogBytesPerInt);
1770 __ jump_cc(Assembler::equal, RuntimeAddress(entry_jint_arraycopy));
1771 #ifdef ASSERT
1772 __ cmpl(rdi_elsize, LogBytesPerLong);
1773 __ jccb(Assembler::notEqual, L_failed);
1774 #endif
1775 __ pop(rdi); // Do pops here since jlong_arraycopy stub does not do it.
1776 __ pop(rsi);
1777 __ jump(RuntimeAddress(entry_jlong_arraycopy));
1778
1779 __ BIND(L_failed);
1780 __ xorptr(rax, rax);
1781 __ notptr(rax); // return -1
1782 __ pop(rdi);
1783 __ pop(rsi);
1784 __ leave(); // required for proper stackwalking of RuntimeStub frame
1785 __ ret(0);
1786
1787 // ObjArrayKlass
1788 __ BIND(L_objArray);
1789 // live at this point: rcx_src_klass, src[_pos], dst[_pos]
1790
1791 Label L_plain_copy, L_checkcast_copy;
1792 // test array classes for subtyping
1793 __ cmpptr(rcx_src_klass, dst_klass_addr); // usual case is exact equality
1794 __ jccb(Assembler::notEqual, L_checkcast_copy);
1795
1796 // Identically typed arrays can be copied without element-wise checks.
1797 assert_different_registers(src, src_pos, dst, dst_pos, rcx_src_klass);
1798 arraycopy_range_checks(src, src_pos, dst, dst_pos, LENGTH, L_failed);
1799
1800 __ BIND(L_plain_copy);
1801 __ movl2ptr(count, LENGTH); // elements count
1802 __ movl2ptr(src_pos, SRC_POS); // reload src_pos
1803 __ lea(from, Address(src, src_pos, Address::times_ptr,
1804 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // src_addr
1805 __ movl2ptr(dst_pos, DST_POS); // reload dst_pos
1806 __ lea(to, Address(dst, dst_pos, Address::times_ptr,
1807 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // dst_addr
1808 __ movptr(FROM, from); // src_addr
1809 __ movptr(TO, to); // dst_addr
1810 __ movl(COUNT, count); // count
1811 __ jump(RuntimeAddress(entry_oop_arraycopy));
1812
1813 __ BIND(L_checkcast_copy);
1814 // live at this point: rcx_src_klass, dst[_pos], src[_pos]
1815 {
1816 // Handy offsets:
1817 int ek_offset = in_bytes(ObjArrayKlass::element_klass_offset());
1818 int sco_offset = in_bytes(Klass::super_check_offset_offset());
1819
1820 Register rsi_dst_klass = rsi;
1821 Register rdi_temp = rdi;
1822 assert(rsi_dst_klass == src_pos, "expected alias w/ src_pos");
1823 assert(rdi_temp == dst_pos, "expected alias w/ dst_pos");
1824 Address dst_klass_lh_addr(rsi_dst_klass, lh_offset);
1825
1826 // Before looking at dst.length, make sure dst is also an objArray.
1827 __ movptr(rsi_dst_klass, dst_klass_addr);
1828 __ cmpl(dst_klass_lh_addr, objArray_lh);
1829 __ jccb(Assembler::notEqual, L_failed);
1830
1831 // It is safe to examine both src.length and dst.length.
1832 __ movl2ptr(src_pos, SRC_POS); // reload rsi
1833 arraycopy_range_checks(src, src_pos, dst, dst_pos, LENGTH, L_failed);
1834 // (Now src_pos and dst_pos are killed, but not src and dst.)
1835
1836 // We'll need this temp (don't forget to pop it after the type check).
1837 __ push(rbx);
1838 Register rbx_src_klass = rbx;
1839
1840 __ mov(rbx_src_klass, rcx_src_klass); // spill away from rcx
1841 __ movptr(rsi_dst_klass, dst_klass_addr);
1842 Address super_check_offset_addr(rsi_dst_klass, sco_offset);
1843 Label L_fail_array_check;
1844 generate_type_check(rbx_src_klass,
1845 super_check_offset_addr, dst_klass_addr,
1846 rdi_temp, NULL, &L_fail_array_check);
1847 // (On fall-through, we have passed the array type check.)
1848 __ pop(rbx);
1849 __ jmp(L_plain_copy);
1850
1851 __ BIND(L_fail_array_check);
1852 // Reshuffle arguments so we can call checkcast_arraycopy:
1853
1854 // match initial saves for checkcast_arraycopy
1855 // push(rsi); // already done; see above
1856 // push(rdi); // already done; see above
1857 // push(rbx); // already done; see above
1858
1859 // Marshal outgoing arguments now, freeing registers.
1860 Address from_arg(rsp, 16+ 4); // from
1861 Address to_arg(rsp, 16+ 8); // to
1862 Address length_arg(rsp, 16+12); // elements count
1863 Address ckoff_arg(rsp, 16+16); // super_check_offset
1864 Address ckval_arg(rsp, 16+20); // super_klass
1865
1866 Address SRC_POS_arg(rsp, 16+ 8);
1867 Address DST_POS_arg(rsp, 16+16);
1868 Address LENGTH_arg(rsp, 16+20);
1869 // push rbx, changed the incoming offsets (why not just use rbp,??)
1870 // assert(SRC_POS_arg.disp() == SRC_POS.disp() + 4, "");
1871
1872 __ movptr(rbx, Address(rsi_dst_klass, ek_offset));
1873 __ movl2ptr(length, LENGTH_arg); // reload elements count
1874 __ movl2ptr(src_pos, SRC_POS_arg); // reload src_pos
1875 __ movl2ptr(dst_pos, DST_POS_arg); // reload dst_pos
1876
1877 __ movptr(ckval_arg, rbx); // destination element type
1878 __ movl(rbx, Address(rbx, sco_offset));
1879 __ movl(ckoff_arg, rbx); // corresponding class check offset
1880
1881 __ movl(length_arg, length); // outgoing length argument
1882
1883 __ lea(from, Address(src, src_pos, Address::times_ptr,
1884 arrayOopDesc::base_offset_in_bytes(T_OBJECT)));
1885 __ movptr(from_arg, from);
1886
1887 __ lea(to, Address(dst, dst_pos, Address::times_ptr,
1888 arrayOopDesc::base_offset_in_bytes(T_OBJECT)));
1889 __ movptr(to_arg, to);
1890 __ jump(RuntimeAddress(entry_checkcast_arraycopy));
1891 }
1892
1893 return start;
1894 }
1895
generate_arraycopy_stubs()1896 void generate_arraycopy_stubs() {
1897 address entry;
1898 address entry_jbyte_arraycopy;
1899 address entry_jshort_arraycopy;
1900 address entry_jint_arraycopy;
1901 address entry_oop_arraycopy;
1902 address entry_jlong_arraycopy;
1903 address entry_checkcast_arraycopy;
1904
1905 StubRoutines::_arrayof_jbyte_disjoint_arraycopy =
1906 generate_disjoint_copy(T_BYTE, true, Address::times_1, &entry,
1907 "arrayof_jbyte_disjoint_arraycopy");
1908 StubRoutines::_arrayof_jbyte_arraycopy =
1909 generate_conjoint_copy(T_BYTE, true, Address::times_1, entry,
1910 NULL, "arrayof_jbyte_arraycopy");
1911 StubRoutines::_jbyte_disjoint_arraycopy =
1912 generate_disjoint_copy(T_BYTE, false, Address::times_1, &entry,
1913 "jbyte_disjoint_arraycopy");
1914 StubRoutines::_jbyte_arraycopy =
1915 generate_conjoint_copy(T_BYTE, false, Address::times_1, entry,
1916 &entry_jbyte_arraycopy, "jbyte_arraycopy");
1917
1918 StubRoutines::_arrayof_jshort_disjoint_arraycopy =
1919 generate_disjoint_copy(T_SHORT, true, Address::times_2, &entry,
1920 "arrayof_jshort_disjoint_arraycopy");
1921 StubRoutines::_arrayof_jshort_arraycopy =
1922 generate_conjoint_copy(T_SHORT, true, Address::times_2, entry,
1923 NULL, "arrayof_jshort_arraycopy");
1924 StubRoutines::_jshort_disjoint_arraycopy =
1925 generate_disjoint_copy(T_SHORT, false, Address::times_2, &entry,
1926 "jshort_disjoint_arraycopy");
1927 StubRoutines::_jshort_arraycopy =
1928 generate_conjoint_copy(T_SHORT, false, Address::times_2, entry,
1929 &entry_jshort_arraycopy, "jshort_arraycopy");
1930
1931 // Next arrays are always aligned on 4 bytes at least.
1932 StubRoutines::_jint_disjoint_arraycopy =
1933 generate_disjoint_copy(T_INT, true, Address::times_4, &entry,
1934 "jint_disjoint_arraycopy");
1935 StubRoutines::_jint_arraycopy =
1936 generate_conjoint_copy(T_INT, true, Address::times_4, entry,
1937 &entry_jint_arraycopy, "jint_arraycopy");
1938
1939 StubRoutines::_oop_disjoint_arraycopy =
1940 generate_disjoint_copy(T_OBJECT, true, Address::times_ptr, &entry,
1941 "oop_disjoint_arraycopy");
1942 StubRoutines::_oop_arraycopy =
1943 generate_conjoint_copy(T_OBJECT, true, Address::times_ptr, entry,
1944 &entry_oop_arraycopy, "oop_arraycopy");
1945
1946 StubRoutines::_oop_disjoint_arraycopy_uninit =
1947 generate_disjoint_copy(T_OBJECT, true, Address::times_ptr, &entry,
1948 "oop_disjoint_arraycopy_uninit",
1949 /*dest_uninitialized*/true);
1950 StubRoutines::_oop_arraycopy_uninit =
1951 generate_conjoint_copy(T_OBJECT, true, Address::times_ptr, entry,
1952 NULL, "oop_arraycopy_uninit",
1953 /*dest_uninitialized*/true);
1954
1955 StubRoutines::_jlong_disjoint_arraycopy =
1956 generate_disjoint_long_copy(&entry, "jlong_disjoint_arraycopy");
1957 StubRoutines::_jlong_arraycopy =
1958 generate_conjoint_long_copy(entry, &entry_jlong_arraycopy,
1959 "jlong_arraycopy");
1960
1961 StubRoutines::_jbyte_fill = generate_fill(T_BYTE, false, "jbyte_fill");
1962 StubRoutines::_jshort_fill = generate_fill(T_SHORT, false, "jshort_fill");
1963 StubRoutines::_jint_fill = generate_fill(T_INT, false, "jint_fill");
1964 StubRoutines::_arrayof_jbyte_fill = generate_fill(T_BYTE, true, "arrayof_jbyte_fill");
1965 StubRoutines::_arrayof_jshort_fill = generate_fill(T_SHORT, true, "arrayof_jshort_fill");
1966 StubRoutines::_arrayof_jint_fill = generate_fill(T_INT, true, "arrayof_jint_fill");
1967
1968 StubRoutines::_arrayof_jint_disjoint_arraycopy = StubRoutines::_jint_disjoint_arraycopy;
1969 StubRoutines::_arrayof_oop_disjoint_arraycopy = StubRoutines::_oop_disjoint_arraycopy;
1970 StubRoutines::_arrayof_oop_disjoint_arraycopy_uninit = StubRoutines::_oop_disjoint_arraycopy_uninit;
1971 StubRoutines::_arrayof_jlong_disjoint_arraycopy = StubRoutines::_jlong_disjoint_arraycopy;
1972
1973 StubRoutines::_arrayof_jint_arraycopy = StubRoutines::_jint_arraycopy;
1974 StubRoutines::_arrayof_oop_arraycopy = StubRoutines::_oop_arraycopy;
1975 StubRoutines::_arrayof_oop_arraycopy_uninit = StubRoutines::_oop_arraycopy_uninit;
1976 StubRoutines::_arrayof_jlong_arraycopy = StubRoutines::_jlong_arraycopy;
1977
1978 StubRoutines::_checkcast_arraycopy =
1979 generate_checkcast_copy("checkcast_arraycopy", &entry_checkcast_arraycopy);
1980 StubRoutines::_checkcast_arraycopy_uninit =
1981 generate_checkcast_copy("checkcast_arraycopy_uninit", NULL, /*dest_uninitialized*/true);
1982
1983 StubRoutines::_unsafe_arraycopy =
1984 generate_unsafe_copy("unsafe_arraycopy",
1985 entry_jbyte_arraycopy,
1986 entry_jshort_arraycopy,
1987 entry_jint_arraycopy,
1988 entry_jlong_arraycopy);
1989
1990 StubRoutines::_generic_arraycopy =
1991 generate_generic_copy("generic_arraycopy",
1992 entry_jbyte_arraycopy,
1993 entry_jshort_arraycopy,
1994 entry_jint_arraycopy,
1995 entry_oop_arraycopy,
1996 entry_jlong_arraycopy,
1997 entry_checkcast_arraycopy);
1998 }
1999
2000 // AES intrinsic stubs
2001 enum {AESBlockSize = 16};
2002
generate_key_shuffle_mask()2003 address generate_key_shuffle_mask() {
2004 __ align(16);
2005 StubCodeMark mark(this, "StubRoutines", "key_shuffle_mask");
2006 address start = __ pc();
2007 __ emit_data(0x00010203, relocInfo::none, 0 );
2008 __ emit_data(0x04050607, relocInfo::none, 0 );
2009 __ emit_data(0x08090a0b, relocInfo::none, 0 );
2010 __ emit_data(0x0c0d0e0f, relocInfo::none, 0 );
2011 return start;
2012 }
2013
generate_counter_shuffle_mask()2014 address generate_counter_shuffle_mask() {
2015 __ align(16);
2016 StubCodeMark mark(this, "StubRoutines", "counter_shuffle_mask");
2017 address start = __ pc();
2018 __ emit_data(0x0c0d0e0f, relocInfo::none, 0);
2019 __ emit_data(0x08090a0b, relocInfo::none, 0);
2020 __ emit_data(0x04050607, relocInfo::none, 0);
2021 __ emit_data(0x00010203, relocInfo::none, 0);
2022 return start;
2023 }
2024
2025 // Utility routine for loading a 128-bit key word in little endian format
2026 // can optionally specify that the shuffle mask is already in an xmmregister
load_key(XMMRegister xmmdst,Register key,int offset,XMMRegister xmm_shuf_mask=NULL)2027 void load_key(XMMRegister xmmdst, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) {
2028 __ movdqu(xmmdst, Address(key, offset));
2029 if (xmm_shuf_mask != NULL) {
2030 __ pshufb(xmmdst, xmm_shuf_mask);
2031 } else {
2032 __ pshufb(xmmdst, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr()));
2033 }
2034 }
2035
2036 // aesenc using specified key+offset
2037 // can optionally specify that the shuffle mask is already in an xmmregister
aes_enc_key(XMMRegister xmmdst,XMMRegister xmmtmp,Register key,int offset,XMMRegister xmm_shuf_mask=NULL)2038 void aes_enc_key(XMMRegister xmmdst, XMMRegister xmmtmp, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) {
2039 load_key(xmmtmp, key, offset, xmm_shuf_mask);
2040 __ aesenc(xmmdst, xmmtmp);
2041 }
2042
2043 // aesdec using specified key+offset
2044 // can optionally specify that the shuffle mask is already in an xmmregister
aes_dec_key(XMMRegister xmmdst,XMMRegister xmmtmp,Register key,int offset,XMMRegister xmm_shuf_mask=NULL)2045 void aes_dec_key(XMMRegister xmmdst, XMMRegister xmmtmp, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) {
2046 load_key(xmmtmp, key, offset, xmm_shuf_mask);
2047 __ aesdec(xmmdst, xmmtmp);
2048 }
2049
2050 // Utility routine for increase 128bit counter (iv in CTR mode)
2051 // XMM_128bit, D3, D2, D1, D0
inc_counter(Register reg,XMMRegister xmmdst,int inc_delta,Label & next_block)2052 void inc_counter(Register reg, XMMRegister xmmdst, int inc_delta, Label& next_block) {
2053 __ pextrd(reg, xmmdst, 0x0);
2054 __ addl(reg, inc_delta);
2055 __ pinsrd(xmmdst, reg, 0x0);
2056 __ jcc(Assembler::carryClear, next_block); // jump if no carry
2057
2058 __ pextrd(reg, xmmdst, 0x01); // Carry-> D1
2059 __ addl(reg, 0x01);
2060 __ pinsrd(xmmdst, reg, 0x01);
2061 __ jcc(Assembler::carryClear, next_block); // jump if no carry
2062
2063 __ pextrd(reg, xmmdst, 0x02); // Carry-> D2
2064 __ addl(reg, 0x01);
2065 __ pinsrd(xmmdst, reg, 0x02);
2066 __ jcc(Assembler::carryClear, next_block); // jump if no carry
2067
2068 __ pextrd(reg, xmmdst, 0x03); // Carry -> D3
2069 __ addl(reg, 0x01);
2070 __ pinsrd(xmmdst, reg, 0x03);
2071
2072 __ BIND(next_block); // next instruction
2073 }
2074
2075
2076 // Arguments:
2077 //
2078 // Inputs:
2079 // c_rarg0 - source byte array address
2080 // c_rarg1 - destination byte array address
2081 // c_rarg2 - K (key) in little endian int array
2082 //
generate_aescrypt_encryptBlock()2083 address generate_aescrypt_encryptBlock() {
2084 assert(UseAES, "need AES instructions and misaligned SSE support");
2085 __ align(CodeEntryAlignment);
2086 StubCodeMark mark(this, "StubRoutines", "aescrypt_encryptBlock");
2087 Label L_doLast;
2088 address start = __ pc();
2089
2090 const Register from = rdx; // source array address
2091 const Register to = rdx; // destination array address
2092 const Register key = rcx; // key array address
2093 const Register keylen = rax;
2094 const Address from_param(rbp, 8+0);
2095 const Address to_param (rbp, 8+4);
2096 const Address key_param (rbp, 8+8);
2097
2098 const XMMRegister xmm_result = xmm0;
2099 const XMMRegister xmm_key_shuf_mask = xmm1;
2100 const XMMRegister xmm_temp1 = xmm2;
2101 const XMMRegister xmm_temp2 = xmm3;
2102 const XMMRegister xmm_temp3 = xmm4;
2103 const XMMRegister xmm_temp4 = xmm5;
2104
2105 __ enter(); // required for proper stackwalking of RuntimeStub frame
2106
2107 __ movptr(from, from_param);
2108 __ movptr(key, key_param);
2109
2110 // keylen could be only {11, 13, 15} * 4 = {44, 52, 60}
2111 __ movl(keylen, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT)));
2112
2113 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr()));
2114 __ movdqu(xmm_result, Address(from, 0)); // get 16 bytes of input
2115 __ movptr(to, to_param);
2116
2117 // For encryption, the java expanded key ordering is just what we need
2118
2119 load_key(xmm_temp1, key, 0x00, xmm_key_shuf_mask);
2120 __ pxor(xmm_result, xmm_temp1);
2121
2122 load_key(xmm_temp1, key, 0x10, xmm_key_shuf_mask);
2123 load_key(xmm_temp2, key, 0x20, xmm_key_shuf_mask);
2124 load_key(xmm_temp3, key, 0x30, xmm_key_shuf_mask);
2125 load_key(xmm_temp4, key, 0x40, xmm_key_shuf_mask);
2126
2127 __ aesenc(xmm_result, xmm_temp1);
2128 __ aesenc(xmm_result, xmm_temp2);
2129 __ aesenc(xmm_result, xmm_temp3);
2130 __ aesenc(xmm_result, xmm_temp4);
2131
2132 load_key(xmm_temp1, key, 0x50, xmm_key_shuf_mask);
2133 load_key(xmm_temp2, key, 0x60, xmm_key_shuf_mask);
2134 load_key(xmm_temp3, key, 0x70, xmm_key_shuf_mask);
2135 load_key(xmm_temp4, key, 0x80, xmm_key_shuf_mask);
2136
2137 __ aesenc(xmm_result, xmm_temp1);
2138 __ aesenc(xmm_result, xmm_temp2);
2139 __ aesenc(xmm_result, xmm_temp3);
2140 __ aesenc(xmm_result, xmm_temp4);
2141
2142 load_key(xmm_temp1, key, 0x90, xmm_key_shuf_mask);
2143 load_key(xmm_temp2, key, 0xa0, xmm_key_shuf_mask);
2144
2145 __ cmpl(keylen, 44);
2146 __ jccb(Assembler::equal, L_doLast);
2147
2148 __ aesenc(xmm_result, xmm_temp1);
2149 __ aesenc(xmm_result, xmm_temp2);
2150
2151 load_key(xmm_temp1, key, 0xb0, xmm_key_shuf_mask);
2152 load_key(xmm_temp2, key, 0xc0, xmm_key_shuf_mask);
2153
2154 __ cmpl(keylen, 52);
2155 __ jccb(Assembler::equal, L_doLast);
2156
2157 __ aesenc(xmm_result, xmm_temp1);
2158 __ aesenc(xmm_result, xmm_temp2);
2159
2160 load_key(xmm_temp1, key, 0xd0, xmm_key_shuf_mask);
2161 load_key(xmm_temp2, key, 0xe0, xmm_key_shuf_mask);
2162
2163 __ BIND(L_doLast);
2164 __ aesenc(xmm_result, xmm_temp1);
2165 __ aesenclast(xmm_result, xmm_temp2);
2166 __ movdqu(Address(to, 0), xmm_result); // store the result
2167 __ xorptr(rax, rax); // return 0
2168 __ leave(); // required for proper stackwalking of RuntimeStub frame
2169 __ ret(0);
2170
2171 return start;
2172 }
2173
2174
2175 // Arguments:
2176 //
2177 // Inputs:
2178 // c_rarg0 - source byte array address
2179 // c_rarg1 - destination byte array address
2180 // c_rarg2 - K (key) in little endian int array
2181 //
generate_aescrypt_decryptBlock()2182 address generate_aescrypt_decryptBlock() {
2183 assert(UseAES, "need AES instructions and misaligned SSE support");
2184 __ align(CodeEntryAlignment);
2185 StubCodeMark mark(this, "StubRoutines", "aescrypt_decryptBlock");
2186 Label L_doLast;
2187 address start = __ pc();
2188
2189 const Register from = rdx; // source array address
2190 const Register to = rdx; // destination array address
2191 const Register key = rcx; // key array address
2192 const Register keylen = rax;
2193 const Address from_param(rbp, 8+0);
2194 const Address to_param (rbp, 8+4);
2195 const Address key_param (rbp, 8+8);
2196
2197 const XMMRegister xmm_result = xmm0;
2198 const XMMRegister xmm_key_shuf_mask = xmm1;
2199 const XMMRegister xmm_temp1 = xmm2;
2200 const XMMRegister xmm_temp2 = xmm3;
2201 const XMMRegister xmm_temp3 = xmm4;
2202 const XMMRegister xmm_temp4 = xmm5;
2203
2204 __ enter(); // required for proper stackwalking of RuntimeStub frame
2205
2206 __ movptr(from, from_param);
2207 __ movptr(key, key_param);
2208
2209 // keylen could be only {11, 13, 15} * 4 = {44, 52, 60}
2210 __ movl(keylen, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT)));
2211
2212 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr()));
2213 __ movdqu(xmm_result, Address(from, 0));
2214 __ movptr(to, to_param);
2215
2216 // for decryption java expanded key ordering is rotated one position from what we want
2217 // so we start from 0x10 here and hit 0x00 last
2218 // we don't know if the key is aligned, hence not using load-execute form
2219 load_key(xmm_temp1, key, 0x10, xmm_key_shuf_mask);
2220 load_key(xmm_temp2, key, 0x20, xmm_key_shuf_mask);
2221 load_key(xmm_temp3, key, 0x30, xmm_key_shuf_mask);
2222 load_key(xmm_temp4, key, 0x40, xmm_key_shuf_mask);
2223
2224 __ pxor (xmm_result, xmm_temp1);
2225 __ aesdec(xmm_result, xmm_temp2);
2226 __ aesdec(xmm_result, xmm_temp3);
2227 __ aesdec(xmm_result, xmm_temp4);
2228
2229 load_key(xmm_temp1, key, 0x50, xmm_key_shuf_mask);
2230 load_key(xmm_temp2, key, 0x60, xmm_key_shuf_mask);
2231 load_key(xmm_temp3, key, 0x70, xmm_key_shuf_mask);
2232 load_key(xmm_temp4, key, 0x80, xmm_key_shuf_mask);
2233
2234 __ aesdec(xmm_result, xmm_temp1);
2235 __ aesdec(xmm_result, xmm_temp2);
2236 __ aesdec(xmm_result, xmm_temp3);
2237 __ aesdec(xmm_result, xmm_temp4);
2238
2239 load_key(xmm_temp1, key, 0x90, xmm_key_shuf_mask);
2240 load_key(xmm_temp2, key, 0xa0, xmm_key_shuf_mask);
2241 load_key(xmm_temp3, key, 0x00, xmm_key_shuf_mask);
2242
2243 __ cmpl(keylen, 44);
2244 __ jccb(Assembler::equal, L_doLast);
2245
2246 __ aesdec(xmm_result, xmm_temp1);
2247 __ aesdec(xmm_result, xmm_temp2);
2248
2249 load_key(xmm_temp1, key, 0xb0, xmm_key_shuf_mask);
2250 load_key(xmm_temp2, key, 0xc0, xmm_key_shuf_mask);
2251
2252 __ cmpl(keylen, 52);
2253 __ jccb(Assembler::equal, L_doLast);
2254
2255 __ aesdec(xmm_result, xmm_temp1);
2256 __ aesdec(xmm_result, xmm_temp2);
2257
2258 load_key(xmm_temp1, key, 0xd0, xmm_key_shuf_mask);
2259 load_key(xmm_temp2, key, 0xe0, xmm_key_shuf_mask);
2260
2261 __ BIND(L_doLast);
2262 __ aesdec(xmm_result, xmm_temp1);
2263 __ aesdec(xmm_result, xmm_temp2);
2264
2265 // for decryption the aesdeclast operation is always on key+0x00
2266 __ aesdeclast(xmm_result, xmm_temp3);
2267 __ movdqu(Address(to, 0), xmm_result); // store the result
2268 __ xorptr(rax, rax); // return 0
2269 __ leave(); // required for proper stackwalking of RuntimeStub frame
2270 __ ret(0);
2271
2272 return start;
2273 }
2274
handleSOERegisters(bool saving)2275 void handleSOERegisters(bool saving) {
2276 const int saveFrameSizeInBytes = 4 * wordSize;
2277 const Address saved_rbx (rbp, -3 * wordSize);
2278 const Address saved_rsi (rbp, -2 * wordSize);
2279 const Address saved_rdi (rbp, -1 * wordSize);
2280
2281 if (saving) {
2282 __ subptr(rsp, saveFrameSizeInBytes);
2283 __ movptr(saved_rsi, rsi);
2284 __ movptr(saved_rdi, rdi);
2285 __ movptr(saved_rbx, rbx);
2286 } else {
2287 // restoring
2288 __ movptr(rsi, saved_rsi);
2289 __ movptr(rdi, saved_rdi);
2290 __ movptr(rbx, saved_rbx);
2291 }
2292 }
2293
2294 // Arguments:
2295 //
2296 // Inputs:
2297 // c_rarg0 - source byte array address
2298 // c_rarg1 - destination byte array address
2299 // c_rarg2 - K (key) in little endian int array
2300 // c_rarg3 - r vector byte array address
2301 // c_rarg4 - input length
2302 //
2303 // Output:
2304 // rax - input length
2305 //
generate_cipherBlockChaining_encryptAESCrypt()2306 address generate_cipherBlockChaining_encryptAESCrypt() {
2307 assert(UseAES, "need AES instructions and misaligned SSE support");
2308 __ align(CodeEntryAlignment);
2309 StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_encryptAESCrypt");
2310 address start = __ pc();
2311
2312 Label L_exit, L_key_192_256, L_key_256, L_loopTop_128, L_loopTop_192, L_loopTop_256;
2313 const Register from = rsi; // source array address
2314 const Register to = rdx; // destination array address
2315 const Register key = rcx; // key array address
2316 const Register rvec = rdi; // r byte array initialized from initvector array address
2317 // and left with the results of the last encryption block
2318 const Register len_reg = rbx; // src len (must be multiple of blocksize 16)
2319 const Register pos = rax;
2320
2321 // xmm register assignments for the loops below
2322 const XMMRegister xmm_result = xmm0;
2323 const XMMRegister xmm_temp = xmm1;
2324 // first 6 keys preloaded into xmm2-xmm7
2325 const int XMM_REG_NUM_KEY_FIRST = 2;
2326 const int XMM_REG_NUM_KEY_LAST = 7;
2327 const XMMRegister xmm_key0 = as_XMMRegister(XMM_REG_NUM_KEY_FIRST);
2328
2329 __ enter(); // required for proper stackwalking of RuntimeStub frame
2330 handleSOERegisters(true /*saving*/);
2331
2332 // load registers from incoming parameters
2333 const Address from_param(rbp, 8+0);
2334 const Address to_param (rbp, 8+4);
2335 const Address key_param (rbp, 8+8);
2336 const Address rvec_param (rbp, 8+12);
2337 const Address len_param (rbp, 8+16);
2338 __ movptr(from , from_param);
2339 __ movptr(to , to_param);
2340 __ movptr(key , key_param);
2341 __ movptr(rvec , rvec_param);
2342 __ movptr(len_reg , len_param);
2343
2344 const XMMRegister xmm_key_shuf_mask = xmm_temp; // used temporarily to swap key bytes up front
2345 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr()));
2346 // load up xmm regs 2 thru 7 with keys 0-5
2347 for (int rnum = XMM_REG_NUM_KEY_FIRST, offset = 0x00; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) {
2348 load_key(as_XMMRegister(rnum), key, offset, xmm_key_shuf_mask);
2349 offset += 0x10;
2350 }
2351
2352 __ movdqu(xmm_result, Address(rvec, 0x00)); // initialize xmm_result with r vec
2353
2354 // now split to different paths depending on the keylen (len in ints of AESCrypt.KLE array (52=192, or 60=256))
2355 __ movl(rax, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT)));
2356 __ cmpl(rax, 44);
2357 __ jcc(Assembler::notEqual, L_key_192_256);
2358
2359 // 128 bit code follows here
2360 __ movl(pos, 0);
2361 __ align(OptoLoopAlignment);
2362 __ BIND(L_loopTop_128);
2363 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input
2364 __ pxor (xmm_result, xmm_temp); // xor with the current r vector
2365
2366 __ pxor (xmm_result, xmm_key0); // do the aes rounds
2367 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) {
2368 __ aesenc(xmm_result, as_XMMRegister(rnum));
2369 }
2370 for (int key_offset = 0x60; key_offset <= 0x90; key_offset += 0x10) {
2371 aes_enc_key(xmm_result, xmm_temp, key, key_offset);
2372 }
2373 load_key(xmm_temp, key, 0xa0);
2374 __ aesenclast(xmm_result, xmm_temp);
2375
2376 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output
2377 // no need to store r to memory until we exit
2378 __ addptr(pos, AESBlockSize);
2379 __ subptr(len_reg, AESBlockSize);
2380 __ jcc(Assembler::notEqual, L_loopTop_128);
2381
2382 __ BIND(L_exit);
2383 __ movdqu(Address(rvec, 0), xmm_result); // final value of r stored in rvec of CipherBlockChaining object
2384
2385 handleSOERegisters(false /*restoring*/);
2386 __ movptr(rax, len_param); // return length
2387 __ leave(); // required for proper stackwalking of RuntimeStub frame
2388 __ ret(0);
2389
2390 __ BIND(L_key_192_256);
2391 // here rax = len in ints of AESCrypt.KLE array (52=192, or 60=256)
2392 __ cmpl(rax, 52);
2393 __ jcc(Assembler::notEqual, L_key_256);
2394
2395 // 192-bit code follows here (could be changed to use more xmm registers)
2396 __ movl(pos, 0);
2397 __ align(OptoLoopAlignment);
2398 __ BIND(L_loopTop_192);
2399 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input
2400 __ pxor (xmm_result, xmm_temp); // xor with the current r vector
2401
2402 __ pxor (xmm_result, xmm_key0); // do the aes rounds
2403 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) {
2404 __ aesenc(xmm_result, as_XMMRegister(rnum));
2405 }
2406 for (int key_offset = 0x60; key_offset <= 0xb0; key_offset += 0x10) {
2407 aes_enc_key(xmm_result, xmm_temp, key, key_offset);
2408 }
2409 load_key(xmm_temp, key, 0xc0);
2410 __ aesenclast(xmm_result, xmm_temp);
2411
2412 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output
2413 // no need to store r to memory until we exit
2414 __ addptr(pos, AESBlockSize);
2415 __ subptr(len_reg, AESBlockSize);
2416 __ jcc(Assembler::notEqual, L_loopTop_192);
2417 __ jmp(L_exit);
2418
2419 __ BIND(L_key_256);
2420 // 256-bit code follows here (could be changed to use more xmm registers)
2421 __ movl(pos, 0);
2422 __ align(OptoLoopAlignment);
2423 __ BIND(L_loopTop_256);
2424 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input
2425 __ pxor (xmm_result, xmm_temp); // xor with the current r vector
2426
2427 __ pxor (xmm_result, xmm_key0); // do the aes rounds
2428 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) {
2429 __ aesenc(xmm_result, as_XMMRegister(rnum));
2430 }
2431 for (int key_offset = 0x60; key_offset <= 0xd0; key_offset += 0x10) {
2432 aes_enc_key(xmm_result, xmm_temp, key, key_offset);
2433 }
2434 load_key(xmm_temp, key, 0xe0);
2435 __ aesenclast(xmm_result, xmm_temp);
2436
2437 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output
2438 // no need to store r to memory until we exit
2439 __ addptr(pos, AESBlockSize);
2440 __ subptr(len_reg, AESBlockSize);
2441 __ jcc(Assembler::notEqual, L_loopTop_256);
2442 __ jmp(L_exit);
2443
2444 return start;
2445 }
2446
2447
2448 // CBC AES Decryption.
2449 // In 32-bit stub, because of lack of registers we do not try to parallelize 4 blocks at a time.
2450 //
2451 // Arguments:
2452 //
2453 // Inputs:
2454 // c_rarg0 - source byte array address
2455 // c_rarg1 - destination byte array address
2456 // c_rarg2 - K (key) in little endian int array
2457 // c_rarg3 - r vector byte array address
2458 // c_rarg4 - input length
2459 //
2460 // Output:
2461 // rax - input length
2462 //
2463
generate_cipherBlockChaining_decryptAESCrypt_Parallel()2464 address generate_cipherBlockChaining_decryptAESCrypt_Parallel() {
2465 assert(UseAES, "need AES instructions and misaligned SSE support");
2466 __ align(CodeEntryAlignment);
2467 StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_decryptAESCrypt");
2468 address start = __ pc();
2469
2470 const Register from = rsi; // source array address
2471 const Register to = rdx; // destination array address
2472 const Register key = rcx; // key array address
2473 const Register rvec = rdi; // r byte array initialized from initvector array address
2474 // and left with the results of the last encryption block
2475 const Register len_reg = rbx; // src len (must be multiple of blocksize 16)
2476 const Register pos = rax;
2477
2478 const int PARALLEL_FACTOR = 4;
2479 const int ROUNDS[3] = { 10, 12, 14 }; //aes rounds for key128, key192, key256
2480
2481 Label L_exit;
2482 Label L_singleBlock_loopTop[3]; //128, 192, 256
2483 Label L_multiBlock_loopTop[3]; //128, 192, 256
2484
2485 const XMMRegister xmm_prev_block_cipher = xmm0; // holds cipher of previous block
2486 const XMMRegister xmm_key_shuf_mask = xmm1;
2487
2488 const XMMRegister xmm_key_tmp0 = xmm2;
2489 const XMMRegister xmm_key_tmp1 = xmm3;
2490
2491 // registers holding the six results in the parallelized loop
2492 const XMMRegister xmm_result0 = xmm4;
2493 const XMMRegister xmm_result1 = xmm5;
2494 const XMMRegister xmm_result2 = xmm6;
2495 const XMMRegister xmm_result3 = xmm7;
2496
2497 __ enter(); // required for proper stackwalking of RuntimeStub frame
2498 handleSOERegisters(true /*saving*/);
2499
2500 // load registers from incoming parameters
2501 const Address from_param(rbp, 8+0);
2502 const Address to_param (rbp, 8+4);
2503 const Address key_param (rbp, 8+8);
2504 const Address rvec_param (rbp, 8+12);
2505 const Address len_param (rbp, 8+16);
2506
2507 __ movptr(from , from_param);
2508 __ movptr(to , to_param);
2509 __ movptr(key , key_param);
2510 __ movptr(rvec , rvec_param);
2511 __ movptr(len_reg , len_param);
2512
2513 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr()));
2514 __ movdqu(xmm_prev_block_cipher, Address(rvec, 0x00)); // initialize with initial rvec
2515
2516 __ xorptr(pos, pos);
2517
2518 // now split to different paths depending on the keylen (len in ints of AESCrypt.KLE array (52=192, or 60=256))
2519 // rvec is reused
2520 __ movl(rvec, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT)));
2521 __ cmpl(rvec, 52);
2522 __ jcc(Assembler::equal, L_multiBlock_loopTop[1]);
2523 __ cmpl(rvec, 60);
2524 __ jcc(Assembler::equal, L_multiBlock_loopTop[2]);
2525
2526 #define DoFour(opc, src_reg) \
2527 __ opc(xmm_result0, src_reg); \
2528 __ opc(xmm_result1, src_reg); \
2529 __ opc(xmm_result2, src_reg); \
2530 __ opc(xmm_result3, src_reg); \
2531
2532 for (int k = 0; k < 3; ++k) {
2533 __ align(OptoLoopAlignment);
2534 __ BIND(L_multiBlock_loopTop[k]);
2535 __ cmpptr(len_reg, PARALLEL_FACTOR * AESBlockSize); // see if at least 4 blocks left
2536 __ jcc(Assembler::less, L_singleBlock_loopTop[k]);
2537
2538 __ movdqu(xmm_result0, Address(from, pos, Address::times_1, 0 * AESBlockSize)); // get next 4 blocks into xmmresult registers
2539 __ movdqu(xmm_result1, Address(from, pos, Address::times_1, 1 * AESBlockSize));
2540 __ movdqu(xmm_result2, Address(from, pos, Address::times_1, 2 * AESBlockSize));
2541 __ movdqu(xmm_result3, Address(from, pos, Address::times_1, 3 * AESBlockSize));
2542
2543 // the java expanded key ordering is rotated one position from what we want
2544 // so we start from 0x10 here and hit 0x00 last
2545 load_key(xmm_key_tmp0, key, 0x10, xmm_key_shuf_mask);
2546 DoFour(pxor, xmm_key_tmp0); //xor with first key
2547 // do the aes dec rounds
2548 for (int rnum = 1; rnum <= ROUNDS[k];) {
2549 //load two keys at a time
2550 //k1->0x20, ..., k9->0xa0, k10->0x00
2551 load_key(xmm_key_tmp1, key, (rnum + 1) * 0x10, xmm_key_shuf_mask);
2552 load_key(xmm_key_tmp0, key, ((rnum + 2) % (ROUNDS[k] + 1)) * 0x10, xmm_key_shuf_mask); // hit 0x00 last!
2553 DoFour(aesdec, xmm_key_tmp1);
2554 rnum++;
2555 if (rnum != ROUNDS[k]) {
2556 DoFour(aesdec, xmm_key_tmp0);
2557 }
2558 else {
2559 DoFour(aesdeclast, xmm_key_tmp0);
2560 }
2561 rnum++;
2562 }
2563
2564 // for each result, xor with the r vector of previous cipher block
2565 __ pxor(xmm_result0, xmm_prev_block_cipher);
2566 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 0 * AESBlockSize));
2567 __ pxor(xmm_result1, xmm_prev_block_cipher);
2568 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 1 * AESBlockSize));
2569 __ pxor(xmm_result2, xmm_prev_block_cipher);
2570 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 2 * AESBlockSize));
2571 __ pxor(xmm_result3, xmm_prev_block_cipher);
2572 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 3 * AESBlockSize)); // this will carry over to next set of blocks
2573
2574 // store 4 results into the next 64 bytes of output
2575 __ movdqu(Address(to, pos, Address::times_1, 0 * AESBlockSize), xmm_result0);
2576 __ movdqu(Address(to, pos, Address::times_1, 1 * AESBlockSize), xmm_result1);
2577 __ movdqu(Address(to, pos, Address::times_1, 2 * AESBlockSize), xmm_result2);
2578 __ movdqu(Address(to, pos, Address::times_1, 3 * AESBlockSize), xmm_result3);
2579
2580 __ addptr(pos, 4 * AESBlockSize);
2581 __ subptr(len_reg, 4 * AESBlockSize);
2582 __ jmp(L_multiBlock_loopTop[k]);
2583
2584 //singleBlock starts here
2585 __ align(OptoLoopAlignment);
2586 __ BIND(L_singleBlock_loopTop[k]);
2587 __ cmpptr(len_reg, 0); // any blocks left?
2588 __ jcc(Assembler::equal, L_exit);
2589 __ movdqu(xmm_result0, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of cipher input
2590 __ movdqa(xmm_result1, xmm_result0);
2591
2592 load_key(xmm_key_tmp0, key, 0x10, xmm_key_shuf_mask);
2593 __ pxor(xmm_result0, xmm_key_tmp0);
2594 // do the aes dec rounds
2595 for (int rnum = 1; rnum < ROUNDS[k]; rnum++) {
2596 // the java expanded key ordering is rotated one position from what we want
2597 load_key(xmm_key_tmp0, key, (rnum + 1) * 0x10, xmm_key_shuf_mask);
2598 __ aesdec(xmm_result0, xmm_key_tmp0);
2599 }
2600 load_key(xmm_key_tmp0, key, 0x00, xmm_key_shuf_mask);
2601 __ aesdeclast(xmm_result0, xmm_key_tmp0);
2602 __ pxor(xmm_result0, xmm_prev_block_cipher); // xor with the current r vector
2603 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result0); // store into the next 16 bytes of output
2604 // no need to store r to memory until we exit
2605 __ movdqa(xmm_prev_block_cipher, xmm_result1); // set up next r vector with cipher input from this block
2606
2607 __ addptr(pos, AESBlockSize);
2608 __ subptr(len_reg, AESBlockSize);
2609 __ jmp(L_singleBlock_loopTop[k]);
2610 }//for 128/192/256
2611
2612 __ BIND(L_exit);
2613 __ movptr(rvec, rvec_param); // restore this since reused earlier
2614 __ movdqu(Address(rvec, 0), xmm_prev_block_cipher); // final value of r stored in rvec of CipherBlockChaining object
2615 handleSOERegisters(false /*restoring*/);
2616 __ movptr(rax, len_param); // return length
2617 __ leave(); // required for proper stackwalking of RuntimeStub frame
2618 __ ret(0);
2619
2620 return start;
2621 }
2622
2623 // CTR AES crypt.
2624 // In 32-bit stub, parallelize 4 blocks at a time
2625 // Arguments:
2626 //
2627 // Inputs:
2628 // c_rarg0 - source byte array address
2629 // c_rarg1 - destination byte array address
2630 // c_rarg2 - K (key) in little endian int array
2631 // c_rarg3 - counter vector byte array address
2632 // c_rarg4 - input length
2633 //
2634 // Output:
2635 // rax - input length
2636 //
generate_counterMode_AESCrypt_Parallel()2637 address generate_counterMode_AESCrypt_Parallel() {
2638 assert(UseAES, "need AES instructions and misaligned SSE support");
2639 __ align(CodeEntryAlignment);
2640 StubCodeMark mark(this, "StubRoutines", "counterMode_AESCrypt");
2641 address start = __ pc();
2642 const Register from = rsi; // source array address
2643 const Register to = rdx; // destination array address
2644 const Register key = rcx; // key array address
2645 const Register counter = rdi; // counter byte array initialized from initvector array address
2646 // and updated with the incremented counter in the end
2647 const Register len_reg = rbx;
2648 const Register pos = rax;
2649
2650 __ enter(); // required for proper stackwalking of RuntimeStub frame
2651 handleSOERegisters(true /*saving*/); // save rbx, rsi, rdi
2652
2653 // load registers from incoming parameters
2654 const Address from_param(rbp, 8+0);
2655 const Address to_param (rbp, 8+4);
2656 const Address key_param (rbp, 8+8);
2657 const Address rvec_param (rbp, 8+12);
2658 const Address len_param (rbp, 8+16);
2659 const Address saved_counter_param(rbp, 8 + 20);
2660 const Address used_addr_param(rbp, 8 + 24);
2661
2662 __ movptr(from , from_param);
2663 __ movptr(to , to_param);
2664 __ movptr(len_reg , len_param);
2665
2666 // Use the partially used encrpyted counter from last invocation
2667 Label L_exit_preLoop, L_preLoop_start;
2668
2669 // Use the registers 'counter' and 'key' here in this preloop
2670 // to hold of last 2 params 'used' and 'saved_encCounter_start'
2671 Register used = counter;
2672 Register saved_encCounter_start = key;
2673 Register used_addr = saved_encCounter_start;
2674
2675 __ movptr(used_addr, used_addr_param);
2676 __ movptr(used, Address(used_addr, 0));
2677 __ movptr(saved_encCounter_start, saved_counter_param);
2678
2679 __ BIND(L_preLoop_start);
2680 __ cmpptr(used, 16);
2681 __ jcc(Assembler::aboveEqual, L_exit_preLoop);
2682 __ cmpptr(len_reg, 0);
2683 __ jcc(Assembler::lessEqual, L_exit_preLoop);
2684 __ movb(rax, Address(saved_encCounter_start, used));
2685 __ xorb(rax, Address(from, 0));
2686 __ movb(Address(to, 0), rax);
2687 __ addptr(from, 1);
2688 __ addptr(to, 1);
2689 __ addptr(used, 1);
2690 __ subptr(len_reg, 1);
2691
2692 __ jmp(L_preLoop_start);
2693
2694 __ BIND(L_exit_preLoop);
2695 __ movptr(used_addr, used_addr_param);
2696 __ movptr(used_addr, used_addr_param);
2697 __ movl(Address(used_addr, 0), used);
2698
2699 // load the parameters 'key' and 'counter'
2700 __ movptr(key, key_param);
2701 __ movptr(counter, rvec_param);
2702
2703 // xmm register assignments for the loops below
2704 const XMMRegister xmm_curr_counter = xmm0;
2705 const XMMRegister xmm_counter_shuf_mask = xmm1; // need to be reloaded
2706 const XMMRegister xmm_key_shuf_mask = xmm2; // need to be reloaded
2707 const XMMRegister xmm_key = xmm3;
2708 const XMMRegister xmm_result0 = xmm4;
2709 const XMMRegister xmm_result1 = xmm5;
2710 const XMMRegister xmm_result2 = xmm6;
2711 const XMMRegister xmm_result3 = xmm7;
2712 const XMMRegister xmm_from0 = xmm1; //reuse XMM register
2713 const XMMRegister xmm_from1 = xmm2;
2714 const XMMRegister xmm_from2 = xmm3;
2715 const XMMRegister xmm_from3 = xmm4;
2716
2717 //for key_128, key_192, key_256
2718 const int rounds[3] = {10, 12, 14};
2719 Label L_singleBlockLoopTop[3];
2720 Label L_multiBlock_loopTop[3];
2721 Label L_key192_top, L_key256_top;
2722 Label L_incCounter[3][4]; // 3: different key length, 4: 4 blocks at a time
2723 Label L_incCounter_single[3]; //for single block, key128, key192, key256
2724 Label L_processTail_insr[3], L_processTail_4_insr[3], L_processTail_2_insr[3], L_processTail_1_insr[3], L_processTail_exit_insr[3];
2725 Label L_processTail_extr[3], L_processTail_4_extr[3], L_processTail_2_extr[3], L_processTail_1_extr[3], L_processTail_exit_extr[3];
2726
2727 Label L_exit;
2728 const int PARALLEL_FACTOR = 4; //because of the limited register number
2729
2730 // initialize counter with initial counter
2731 __ movdqu(xmm_curr_counter, Address(counter, 0x00));
2732 __ movdqu(xmm_counter_shuf_mask, ExternalAddress(StubRoutines::x86::counter_shuffle_mask_addr()));
2733 __ pshufb(xmm_curr_counter, xmm_counter_shuf_mask); //counter is shuffled for increase
2734
2735 // key length could be only {11, 13, 15} * 4 = {44, 52, 60}
2736 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr()));
2737 __ movl(rax, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT)));
2738 __ cmpl(rax, 52);
2739 __ jcc(Assembler::equal, L_key192_top);
2740 __ cmpl(rax, 60);
2741 __ jcc(Assembler::equal, L_key256_top);
2742
2743 //key128 begins here
2744 __ movptr(pos, NULL_WORD); // init pos before L_multiBlock_loopTop
2745
2746 #define CTR_DoFour(opc, src_reg) \
2747 __ opc(xmm_result0, src_reg); \
2748 __ opc(xmm_result1, src_reg); \
2749 __ opc(xmm_result2, src_reg); \
2750 __ opc(xmm_result3, src_reg);
2751
2752 // k == 0 : generate code for key_128
2753 // k == 1 : generate code for key_192
2754 // k == 2 : generate code for key_256
2755 for (int k = 0; k < 3; ++k) {
2756 //multi blocks starts here
2757 __ align(OptoLoopAlignment);
2758 __ BIND(L_multiBlock_loopTop[k]);
2759 __ cmpptr(len_reg, PARALLEL_FACTOR * AESBlockSize); // see if at least PARALLEL_FACTOR blocks left
2760 __ jcc(Assembler::less, L_singleBlockLoopTop[k]);
2761
2762 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr()));
2763 __ movdqu(xmm_counter_shuf_mask, ExternalAddress(StubRoutines::x86::counter_shuffle_mask_addr()));
2764
2765 //load, then increase counters
2766 CTR_DoFour(movdqa, xmm_curr_counter);
2767 __ push(rbx);
2768 inc_counter(rbx, xmm_result1, 0x01, L_incCounter[k][0]);
2769 inc_counter(rbx, xmm_result2, 0x02, L_incCounter[k][1]);
2770 inc_counter(rbx, xmm_result3, 0x03, L_incCounter[k][2]);
2771 inc_counter(rbx, xmm_curr_counter, 0x04, L_incCounter[k][3]);
2772 __ pop (rbx);
2773
2774 load_key(xmm_key, key, 0x00, xmm_key_shuf_mask); // load Round 0 key. interleaving for better performance
2775
2776 CTR_DoFour(pshufb, xmm_counter_shuf_mask); // after increased, shuffled counters back for PXOR
2777 CTR_DoFour(pxor, xmm_key); //PXOR with Round 0 key
2778
2779 for (int i = 1; i < rounds[k]; ++i) {
2780 load_key(xmm_key, key, (0x10 * i), xmm_key_shuf_mask);
2781 CTR_DoFour(aesenc, xmm_key);
2782 }
2783 load_key(xmm_key, key, (0x10 * rounds[k]), xmm_key_shuf_mask);
2784 CTR_DoFour(aesenclast, xmm_key);
2785
2786 // get next PARALLEL_FACTOR blocks into xmm_from registers
2787 __ movdqu(xmm_from0, Address(from, pos, Address::times_1, 0 * AESBlockSize));
2788 __ movdqu(xmm_from1, Address(from, pos, Address::times_1, 1 * AESBlockSize));
2789 __ movdqu(xmm_from2, Address(from, pos, Address::times_1, 2 * AESBlockSize));
2790
2791 // PXOR with input text
2792 __ pxor(xmm_result0, xmm_from0); //result0 is xmm4
2793 __ pxor(xmm_result1, xmm_from1);
2794 __ pxor(xmm_result2, xmm_from2);
2795
2796 // store PARALLEL_FACTOR results into the next 64 bytes of output
2797 __ movdqu(Address(to, pos, Address::times_1, 0 * AESBlockSize), xmm_result0);
2798 __ movdqu(Address(to, pos, Address::times_1, 1 * AESBlockSize), xmm_result1);
2799 __ movdqu(Address(to, pos, Address::times_1, 2 * AESBlockSize), xmm_result2);
2800
2801 // do it here after xmm_result0 is saved, because xmm_from3 reuse the same register of xmm_result0.
2802 __ movdqu(xmm_from3, Address(from, pos, Address::times_1, 3 * AESBlockSize));
2803 __ pxor(xmm_result3, xmm_from3);
2804 __ movdqu(Address(to, pos, Address::times_1, 3 * AESBlockSize), xmm_result3);
2805
2806 __ addptr(pos, PARALLEL_FACTOR * AESBlockSize); // increase the length of crypt text
2807 __ subptr(len_reg, PARALLEL_FACTOR * AESBlockSize); // decrease the remaining length
2808 __ jmp(L_multiBlock_loopTop[k]);
2809
2810 // singleBlock starts here
2811 __ align(OptoLoopAlignment);
2812 __ BIND(L_singleBlockLoopTop[k]);
2813 __ cmpptr(len_reg, 0);
2814 __ jcc(Assembler::equal, L_exit);
2815 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr()));
2816 __ movdqu(xmm_counter_shuf_mask, ExternalAddress(StubRoutines::x86::counter_shuffle_mask_addr()));
2817 __ movdqa(xmm_result0, xmm_curr_counter);
2818 load_key(xmm_key, key, 0x00, xmm_key_shuf_mask);
2819 __ push(rbx);//rbx is used for increasing counter
2820 inc_counter(rbx, xmm_curr_counter, 0x01, L_incCounter_single[k]);
2821 __ pop (rbx);
2822 __ pshufb(xmm_result0, xmm_counter_shuf_mask);
2823 __ pxor(xmm_result0, xmm_key);
2824 for (int i = 1; i < rounds[k]; i++) {
2825 load_key(xmm_key, key, (0x10 * i), xmm_key_shuf_mask);
2826 __ aesenc(xmm_result0, xmm_key);
2827 }
2828 load_key(xmm_key, key, (0x10 * rounds[k]), xmm_key_shuf_mask);
2829 __ aesenclast(xmm_result0, xmm_key);
2830 __ cmpptr(len_reg, AESBlockSize);
2831 __ jcc(Assembler::less, L_processTail_insr[k]);
2832 __ movdqu(xmm_from0, Address(from, pos, Address::times_1, 0 * AESBlockSize));
2833 __ pxor(xmm_result0, xmm_from0);
2834 __ movdqu(Address(to, pos, Address::times_1, 0 * AESBlockSize), xmm_result0);
2835 __ addptr(pos, AESBlockSize);
2836 __ subptr(len_reg, AESBlockSize);
2837 __ jmp(L_singleBlockLoopTop[k]);
2838
2839 __ BIND(L_processTail_insr[k]); // Process the tail part of the input array
2840 __ addptr(pos, len_reg); // 1. Insert bytes from src array into xmm_from0 register
2841 __ testptr(len_reg, 8);
2842 __ jcc(Assembler::zero, L_processTail_4_insr[k]);
2843 __ subptr(pos,8);
2844 __ pinsrd(xmm_from0, Address(from, pos), 0);
2845 __ pinsrd(xmm_from0, Address(from, pos, Address::times_1, 4), 1);
2846 __ BIND(L_processTail_4_insr[k]);
2847 __ testptr(len_reg, 4);
2848 __ jcc(Assembler::zero, L_processTail_2_insr[k]);
2849 __ subptr(pos,4);
2850 __ pslldq(xmm_from0, 4);
2851 __ pinsrd(xmm_from0, Address(from, pos), 0);
2852 __ BIND(L_processTail_2_insr[k]);
2853 __ testptr(len_reg, 2);
2854 __ jcc(Assembler::zero, L_processTail_1_insr[k]);
2855 __ subptr(pos, 2);
2856 __ pslldq(xmm_from0, 2);
2857 __ pinsrw(xmm_from0, Address(from, pos), 0);
2858 __ BIND(L_processTail_1_insr[k]);
2859 __ testptr(len_reg, 1);
2860 __ jcc(Assembler::zero, L_processTail_exit_insr[k]);
2861 __ subptr(pos, 1);
2862 __ pslldq(xmm_from0, 1);
2863 __ pinsrb(xmm_from0, Address(from, pos), 0);
2864 __ BIND(L_processTail_exit_insr[k]);
2865
2866 __ movptr(saved_encCounter_start, saved_counter_param);
2867 __ movdqu(Address(saved_encCounter_start, 0), xmm_result0); // 2. Perform pxor of the encrypted counter and plaintext Bytes.
2868 __ pxor(xmm_result0, xmm_from0); // Also the encrypted counter is saved for next invocation.
2869
2870 __ testptr(len_reg, 8);
2871 __ jcc(Assembler::zero, L_processTail_4_extr[k]); // 3. Extract bytes from xmm_result0 into the dest. array
2872 __ pextrd(Address(to, pos), xmm_result0, 0);
2873 __ pextrd(Address(to, pos, Address::times_1, 4), xmm_result0, 1);
2874 __ psrldq(xmm_result0, 8);
2875 __ addptr(pos, 8);
2876 __ BIND(L_processTail_4_extr[k]);
2877 __ testptr(len_reg, 4);
2878 __ jcc(Assembler::zero, L_processTail_2_extr[k]);
2879 __ pextrd(Address(to, pos), xmm_result0, 0);
2880 __ psrldq(xmm_result0, 4);
2881 __ addptr(pos, 4);
2882 __ BIND(L_processTail_2_extr[k]);
2883 __ testptr(len_reg, 2);
2884 __ jcc(Assembler::zero, L_processTail_1_extr[k]);
2885 __ pextrb(Address(to, pos), xmm_result0, 0);
2886 __ pextrb(Address(to, pos, Address::times_1, 1), xmm_result0, 1);
2887 __ psrldq(xmm_result0, 2);
2888 __ addptr(pos, 2);
2889 __ BIND(L_processTail_1_extr[k]);
2890 __ testptr(len_reg, 1);
2891 __ jcc(Assembler::zero, L_processTail_exit_extr[k]);
2892 __ pextrb(Address(to, pos), xmm_result0, 0);
2893
2894 __ BIND(L_processTail_exit_extr[k]);
2895 __ movptr(used_addr, used_addr_param);
2896 __ movl(Address(used_addr, 0), len_reg);
2897 __ jmp(L_exit);
2898 }
2899
2900 __ BIND(L_exit);
2901 __ movdqu(xmm_counter_shuf_mask, ExternalAddress(StubRoutines::x86::counter_shuffle_mask_addr()));
2902 __ pshufb(xmm_curr_counter, xmm_counter_shuf_mask); //counter is shuffled back.
2903 __ movdqu(Address(counter, 0), xmm_curr_counter); //save counter back
2904 handleSOERegisters(false /*restoring*/);
2905 __ movptr(rax, len_param); // return length
2906 __ leave(); // required for proper stackwalking of RuntimeStub frame
2907 __ ret(0);
2908
2909 __ BIND (L_key192_top);
2910 __ movptr(pos, NULL_WORD); // init pos before L_multiBlock_loopTop
2911 __ jmp(L_multiBlock_loopTop[1]); //key192
2912
2913 __ BIND (L_key256_top);
2914 __ movptr(pos, NULL_WORD); // init pos before L_multiBlock_loopTop
2915 __ jmp(L_multiBlock_loopTop[2]); //key192
2916
2917 return start;
2918 }
2919
generate_upper_word_mask()2920 address generate_upper_word_mask() {
2921 __ align(64);
2922 StubCodeMark mark(this, "StubRoutines", "upper_word_mask");
2923 address start = __ pc();
2924 __ emit_data(0x00000000, relocInfo::none, 0);
2925 __ emit_data(0x00000000, relocInfo::none, 0);
2926 __ emit_data(0x00000000, relocInfo::none, 0);
2927 __ emit_data(0xFFFFFFFF, relocInfo::none, 0);
2928 return start;
2929 }
2930
generate_shuffle_byte_flip_mask()2931 address generate_shuffle_byte_flip_mask() {
2932 __ align(64);
2933 StubCodeMark mark(this, "StubRoutines", "shuffle_byte_flip_mask");
2934 address start = __ pc();
2935 __ emit_data(0x0c0d0e0f, relocInfo::none, 0);
2936 __ emit_data(0x08090a0b, relocInfo::none, 0);
2937 __ emit_data(0x04050607, relocInfo::none, 0);
2938 __ emit_data(0x00010203, relocInfo::none, 0);
2939 return start;
2940 }
2941
2942 // ofs and limit are use for multi-block byte array.
2943 // int com.sun.security.provider.DigestBase.implCompressMultiBlock(byte[] b, int ofs, int limit)
generate_sha1_implCompress(bool multi_block,const char * name)2944 address generate_sha1_implCompress(bool multi_block, const char *name) {
2945 __ align(CodeEntryAlignment);
2946 StubCodeMark mark(this, "StubRoutines", name);
2947 address start = __ pc();
2948
2949 Register buf = rax;
2950 Register state = rdx;
2951 Register ofs = rcx;
2952 Register limit = rdi;
2953
2954 const Address buf_param(rbp, 8 + 0);
2955 const Address state_param(rbp, 8 + 4);
2956 const Address ofs_param(rbp, 8 + 8);
2957 const Address limit_param(rbp, 8 + 12);
2958
2959 const XMMRegister abcd = xmm0;
2960 const XMMRegister e0 = xmm1;
2961 const XMMRegister e1 = xmm2;
2962 const XMMRegister msg0 = xmm3;
2963
2964 const XMMRegister msg1 = xmm4;
2965 const XMMRegister msg2 = xmm5;
2966 const XMMRegister msg3 = xmm6;
2967 const XMMRegister shuf_mask = xmm7;
2968
2969 __ enter();
2970 __ subptr(rsp, 8 * wordSize);
2971 handleSOERegisters(true /*saving*/);
2972
2973 __ movptr(buf, buf_param);
2974 __ movptr(state, state_param);
2975 if (multi_block) {
2976 __ movptr(ofs, ofs_param);
2977 __ movptr(limit, limit_param);
2978 }
2979
2980 __ fast_sha1(abcd, e0, e1, msg0, msg1, msg2, msg3, shuf_mask,
2981 buf, state, ofs, limit, rsp, multi_block);
2982
2983 handleSOERegisters(false /*restoring*/);
2984 __ addptr(rsp, 8 * wordSize);
2985 __ leave();
2986 __ ret(0);
2987 return start;
2988 }
2989
generate_pshuffle_byte_flip_mask()2990 address generate_pshuffle_byte_flip_mask() {
2991 __ align(64);
2992 StubCodeMark mark(this, "StubRoutines", "pshuffle_byte_flip_mask");
2993 address start = __ pc();
2994 __ emit_data(0x00010203, relocInfo::none, 0);
2995 __ emit_data(0x04050607, relocInfo::none, 0);
2996 __ emit_data(0x08090a0b, relocInfo::none, 0);
2997 __ emit_data(0x0c0d0e0f, relocInfo::none, 0);
2998 return start;
2999 }
3000
3001 // ofs and limit are use for multi-block byte array.
3002 // int com.sun.security.provider.DigestBase.implCompressMultiBlock(byte[] b, int ofs, int limit)
generate_sha256_implCompress(bool multi_block,const char * name)3003 address generate_sha256_implCompress(bool multi_block, const char *name) {
3004 __ align(CodeEntryAlignment);
3005 StubCodeMark mark(this, "StubRoutines", name);
3006 address start = __ pc();
3007
3008 Register buf = rbx;
3009 Register state = rsi;
3010 Register ofs = rdx;
3011 Register limit = rcx;
3012
3013 const Address buf_param(rbp, 8 + 0);
3014 const Address state_param(rbp, 8 + 4);
3015 const Address ofs_param(rbp, 8 + 8);
3016 const Address limit_param(rbp, 8 + 12);
3017
3018 const XMMRegister msg = xmm0;
3019 const XMMRegister state0 = xmm1;
3020 const XMMRegister state1 = xmm2;
3021 const XMMRegister msgtmp0 = xmm3;
3022
3023 const XMMRegister msgtmp1 = xmm4;
3024 const XMMRegister msgtmp2 = xmm5;
3025 const XMMRegister msgtmp3 = xmm6;
3026 const XMMRegister msgtmp4 = xmm7;
3027
3028 __ enter();
3029 __ subptr(rsp, 8 * wordSize);
3030 handleSOERegisters(true /*saving*/);
3031 __ movptr(buf, buf_param);
3032 __ movptr(state, state_param);
3033 if (multi_block) {
3034 __ movptr(ofs, ofs_param);
3035 __ movptr(limit, limit_param);
3036 }
3037
3038 __ fast_sha256(msg, state0, state1, msgtmp0, msgtmp1, msgtmp2, msgtmp3, msgtmp4,
3039 buf, state, ofs, limit, rsp, multi_block);
3040
3041 handleSOERegisters(false);
3042 __ addptr(rsp, 8 * wordSize);
3043 __ leave();
3044 __ ret(0);
3045 return start;
3046 }
3047
3048 // byte swap x86 long
generate_ghash_long_swap_mask()3049 address generate_ghash_long_swap_mask() {
3050 __ align(CodeEntryAlignment);
3051 StubCodeMark mark(this, "StubRoutines", "ghash_long_swap_mask");
3052 address start = __ pc();
3053 __ emit_data(0x0b0a0908, relocInfo::none, 0);
3054 __ emit_data(0x0f0e0d0c, relocInfo::none, 0);
3055 __ emit_data(0x03020100, relocInfo::none, 0);
3056 __ emit_data(0x07060504, relocInfo::none, 0);
3057
3058 return start;
3059 }
3060
3061 // byte swap x86 byte array
generate_ghash_byte_swap_mask()3062 address generate_ghash_byte_swap_mask() {
3063 __ align(CodeEntryAlignment);
3064 StubCodeMark mark(this, "StubRoutines", "ghash_byte_swap_mask");
3065 address start = __ pc();
3066 __ emit_data(0x0c0d0e0f, relocInfo::none, 0);
3067 __ emit_data(0x08090a0b, relocInfo::none, 0);
3068 __ emit_data(0x04050607, relocInfo::none, 0);
3069 __ emit_data(0x00010203, relocInfo::none, 0);
3070 return start;
3071 }
3072
3073 /* Single and multi-block ghash operations */
generate_ghash_processBlocks()3074 address generate_ghash_processBlocks() {
3075 assert(UseGHASHIntrinsics, "need GHASH intrinsics and CLMUL support");
3076 __ align(CodeEntryAlignment);
3077 Label L_ghash_loop, L_exit;
3078 StubCodeMark mark(this, "StubRoutines", "ghash_processBlocks");
3079 address start = __ pc();
3080
3081 const Register state = rdi;
3082 const Register subkeyH = rsi;
3083 const Register data = rdx;
3084 const Register blocks = rcx;
3085
3086 const Address state_param(rbp, 8+0);
3087 const Address subkeyH_param(rbp, 8+4);
3088 const Address data_param(rbp, 8+8);
3089 const Address blocks_param(rbp, 8+12);
3090
3091 const XMMRegister xmm_temp0 = xmm0;
3092 const XMMRegister xmm_temp1 = xmm1;
3093 const XMMRegister xmm_temp2 = xmm2;
3094 const XMMRegister xmm_temp3 = xmm3;
3095 const XMMRegister xmm_temp4 = xmm4;
3096 const XMMRegister xmm_temp5 = xmm5;
3097 const XMMRegister xmm_temp6 = xmm6;
3098 const XMMRegister xmm_temp7 = xmm7;
3099
3100 __ enter();
3101 handleSOERegisters(true); // Save registers
3102
3103 __ movptr(state, state_param);
3104 __ movptr(subkeyH, subkeyH_param);
3105 __ movptr(data, data_param);
3106 __ movptr(blocks, blocks_param);
3107
3108 __ movdqu(xmm_temp0, Address(state, 0));
3109 __ pshufb(xmm_temp0, ExternalAddress(StubRoutines::x86::ghash_long_swap_mask_addr()));
3110
3111 __ movdqu(xmm_temp1, Address(subkeyH, 0));
3112 __ pshufb(xmm_temp1, ExternalAddress(StubRoutines::x86::ghash_long_swap_mask_addr()));
3113
3114 __ BIND(L_ghash_loop);
3115 __ movdqu(xmm_temp2, Address(data, 0));
3116 __ pshufb(xmm_temp2, ExternalAddress(StubRoutines::x86::ghash_byte_swap_mask_addr()));
3117
3118 __ pxor(xmm_temp0, xmm_temp2);
3119
3120 //
3121 // Multiply with the hash key
3122 //
3123 __ movdqu(xmm_temp3, xmm_temp0);
3124 __ pclmulqdq(xmm_temp3, xmm_temp1, 0); // xmm3 holds a0*b0
3125 __ movdqu(xmm_temp4, xmm_temp0);
3126 __ pclmulqdq(xmm_temp4, xmm_temp1, 16); // xmm4 holds a0*b1
3127
3128 __ movdqu(xmm_temp5, xmm_temp0);
3129 __ pclmulqdq(xmm_temp5, xmm_temp1, 1); // xmm5 holds a1*b0
3130 __ movdqu(xmm_temp6, xmm_temp0);
3131 __ pclmulqdq(xmm_temp6, xmm_temp1, 17); // xmm6 holds a1*b1
3132
3133 __ pxor(xmm_temp4, xmm_temp5); // xmm4 holds a0*b1 + a1*b0
3134
3135 __ movdqu(xmm_temp5, xmm_temp4); // move the contents of xmm4 to xmm5
3136 __ psrldq(xmm_temp4, 8); // shift by xmm4 64 bits to the right
3137 __ pslldq(xmm_temp5, 8); // shift by xmm5 64 bits to the left
3138 __ pxor(xmm_temp3, xmm_temp5);
3139 __ pxor(xmm_temp6, xmm_temp4); // Register pair <xmm6:xmm3> holds the result
3140 // of the carry-less multiplication of
3141 // xmm0 by xmm1.
3142
3143 // We shift the result of the multiplication by one bit position
3144 // to the left to cope for the fact that the bits are reversed.
3145 __ movdqu(xmm_temp7, xmm_temp3);
3146 __ movdqu(xmm_temp4, xmm_temp6);
3147 __ pslld (xmm_temp3, 1);
3148 __ pslld(xmm_temp6, 1);
3149 __ psrld(xmm_temp7, 31);
3150 __ psrld(xmm_temp4, 31);
3151 __ movdqu(xmm_temp5, xmm_temp7);
3152 __ pslldq(xmm_temp4, 4);
3153 __ pslldq(xmm_temp7, 4);
3154 __ psrldq(xmm_temp5, 12);
3155 __ por(xmm_temp3, xmm_temp7);
3156 __ por(xmm_temp6, xmm_temp4);
3157 __ por(xmm_temp6, xmm_temp5);
3158
3159 //
3160 // First phase of the reduction
3161 //
3162 // Move xmm3 into xmm4, xmm5, xmm7 in order to perform the shifts
3163 // independently.
3164 __ movdqu(xmm_temp7, xmm_temp3);
3165 __ movdqu(xmm_temp4, xmm_temp3);
3166 __ movdqu(xmm_temp5, xmm_temp3);
3167 __ pslld(xmm_temp7, 31); // packed right shift shifting << 31
3168 __ pslld(xmm_temp4, 30); // packed right shift shifting << 30
3169 __ pslld(xmm_temp5, 25); // packed right shift shifting << 25
3170 __ pxor(xmm_temp7, xmm_temp4); // xor the shifted versions
3171 __ pxor(xmm_temp7, xmm_temp5);
3172 __ movdqu(xmm_temp4, xmm_temp7);
3173 __ pslldq(xmm_temp7, 12);
3174 __ psrldq(xmm_temp4, 4);
3175 __ pxor(xmm_temp3, xmm_temp7); // first phase of the reduction complete
3176
3177 //
3178 // Second phase of the reduction
3179 //
3180 // Make 3 copies of xmm3 in xmm2, xmm5, xmm7 for doing these
3181 // shift operations.
3182 __ movdqu(xmm_temp2, xmm_temp3);
3183 __ movdqu(xmm_temp7, xmm_temp3);
3184 __ movdqu(xmm_temp5, xmm_temp3);
3185 __ psrld(xmm_temp2, 1); // packed left shifting >> 1
3186 __ psrld(xmm_temp7, 2); // packed left shifting >> 2
3187 __ psrld(xmm_temp5, 7); // packed left shifting >> 7
3188 __ pxor(xmm_temp2, xmm_temp7); // xor the shifted versions
3189 __ pxor(xmm_temp2, xmm_temp5);
3190 __ pxor(xmm_temp2, xmm_temp4);
3191 __ pxor(xmm_temp3, xmm_temp2);
3192 __ pxor(xmm_temp6, xmm_temp3); // the result is in xmm6
3193
3194 __ decrement(blocks);
3195 __ jcc(Assembler::zero, L_exit);
3196 __ movdqu(xmm_temp0, xmm_temp6);
3197 __ addptr(data, 16);
3198 __ jmp(L_ghash_loop);
3199
3200 __ BIND(L_exit);
3201 // Byte swap 16-byte result
3202 __ pshufb(xmm_temp6, ExternalAddress(StubRoutines::x86::ghash_long_swap_mask_addr()));
3203 __ movdqu(Address(state, 0), xmm_temp6); // store the result
3204
3205 handleSOERegisters(false); // restore registers
3206 __ leave();
3207 __ ret(0);
3208 return start;
3209 }
3210
3211 /**
3212 * Arguments:
3213 *
3214 * Inputs:
3215 * rsp(4) - int crc
3216 * rsp(8) - byte* buf
3217 * rsp(12) - int length
3218 *
3219 * Ouput:
3220 * rax - int crc result
3221 */
generate_updateBytesCRC32()3222 address generate_updateBytesCRC32() {
3223 assert(UseCRC32Intrinsics, "need AVX and CLMUL instructions");
3224
3225 __ align(CodeEntryAlignment);
3226 StubCodeMark mark(this, "StubRoutines", "updateBytesCRC32");
3227
3228 address start = __ pc();
3229
3230 const Register crc = rdx; // crc
3231 const Register buf = rsi; // source java byte array address
3232 const Register len = rcx; // length
3233 const Register table = rdi; // crc_table address (reuse register)
3234 const Register tmp = rbx;
3235 assert_different_registers(crc, buf, len, table, tmp, rax);
3236
3237 BLOCK_COMMENT("Entry:");
3238 __ enter(); // required for proper stackwalking of RuntimeStub frame
3239 __ push(rsi);
3240 __ push(rdi);
3241 __ push(rbx);
3242
3243 Address crc_arg(rbp, 8 + 0);
3244 Address buf_arg(rbp, 8 + 4);
3245 Address len_arg(rbp, 8 + 8);
3246
3247 // Load up:
3248 __ movl(crc, crc_arg);
3249 __ movptr(buf, buf_arg);
3250 __ movl(len, len_arg);
3251
3252 __ kernel_crc32(crc, buf, len, table, tmp);
3253
3254 __ movl(rax, crc);
3255 __ pop(rbx);
3256 __ pop(rdi);
3257 __ pop(rsi);
3258 __ vzeroupper();
3259 __ leave(); // required for proper stackwalking of RuntimeStub frame
3260 __ ret(0);
3261
3262 return start;
3263 }
3264
3265 /**
3266 * Arguments:
3267 *
3268 * Inputs:
3269 * rsp(4) - int crc
3270 * rsp(8) - byte* buf
3271 * rsp(12) - int length
3272 * rsp(16) - table_start - optional (present only when doing a library_calll,
3273 * not used by x86 algorithm)
3274 *
3275 * Ouput:
3276 * rax - int crc result
3277 */
generate_updateBytesCRC32C(bool is_pclmulqdq_supported)3278 address generate_updateBytesCRC32C(bool is_pclmulqdq_supported) {
3279 assert(UseCRC32CIntrinsics, "need SSE4_2");
3280 __ align(CodeEntryAlignment);
3281 StubCodeMark mark(this, "StubRoutines", "updateBytesCRC32C");
3282 address start = __ pc();
3283 const Register crc = rax; // crc
3284 const Register buf = rcx; // source java byte array address
3285 const Register len = rdx; // length
3286 const Register d = rbx;
3287 const Register g = rsi;
3288 const Register h = rdi;
3289 const Register empty = 0; // will never be used, in order not
3290 // to change a signature for crc32c_IPL_Alg2_Alt2
3291 // between 64/32 I'm just keeping it here
3292 assert_different_registers(crc, buf, len, d, g, h);
3293
3294 BLOCK_COMMENT("Entry:");
3295 __ enter(); // required for proper stackwalking of RuntimeStub frame
3296 Address crc_arg(rsp, 4 + 4 + 0); // ESP+4 +
3297 // we need to add additional 4 because __ enter
3298 // have just pushed ebp on a stack
3299 Address buf_arg(rsp, 4 + 4 + 4);
3300 Address len_arg(rsp, 4 + 4 + 8);
3301 // Load up:
3302 __ movl(crc, crc_arg);
3303 __ movl(buf, buf_arg);
3304 __ movl(len, len_arg);
3305 __ push(d);
3306 __ push(g);
3307 __ push(h);
3308 __ crc32c_ipl_alg2_alt2(crc, buf, len,
3309 d, g, h,
3310 empty, empty, empty,
3311 xmm0, xmm1, xmm2,
3312 is_pclmulqdq_supported);
3313 __ pop(h);
3314 __ pop(g);
3315 __ pop(d);
3316 __ vzeroupper();
3317 __ leave(); // required for proper stackwalking of RuntimeStub frame
3318 __ ret(0);
3319
3320 return start;
3321 }
3322
generate_libmExp()3323 address generate_libmExp() {
3324 StubCodeMark mark(this, "StubRoutines", "libmExp");
3325
3326 address start = __ pc();
3327
3328 const XMMRegister x0 = xmm0;
3329 const XMMRegister x1 = xmm1;
3330 const XMMRegister x2 = xmm2;
3331 const XMMRegister x3 = xmm3;
3332
3333 const XMMRegister x4 = xmm4;
3334 const XMMRegister x5 = xmm5;
3335 const XMMRegister x6 = xmm6;
3336 const XMMRegister x7 = xmm7;
3337
3338 const Register tmp = rbx;
3339
3340 BLOCK_COMMENT("Entry:");
3341 __ enter(); // required for proper stackwalking of RuntimeStub frame
3342 __ fast_exp(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp);
3343 __ leave(); // required for proper stackwalking of RuntimeStub frame
3344 __ ret(0);
3345
3346 return start;
3347
3348 }
3349
generate_libmLog()3350 address generate_libmLog() {
3351 StubCodeMark mark(this, "StubRoutines", "libmLog");
3352
3353 address start = __ pc();
3354
3355 const XMMRegister x0 = xmm0;
3356 const XMMRegister x1 = xmm1;
3357 const XMMRegister x2 = xmm2;
3358 const XMMRegister x3 = xmm3;
3359
3360 const XMMRegister x4 = xmm4;
3361 const XMMRegister x5 = xmm5;
3362 const XMMRegister x6 = xmm6;
3363 const XMMRegister x7 = xmm7;
3364
3365 const Register tmp = rbx;
3366
3367 BLOCK_COMMENT("Entry:");
3368 __ enter(); // required for proper stackwalking of RuntimeStub frame
3369 __ fast_log(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp);
3370 __ leave(); // required for proper stackwalking of RuntimeStub frame
3371 __ ret(0);
3372
3373 return start;
3374
3375 }
3376
generate_libmLog10()3377 address generate_libmLog10() {
3378 StubCodeMark mark(this, "StubRoutines", "libmLog10");
3379
3380 address start = __ pc();
3381
3382 const XMMRegister x0 = xmm0;
3383 const XMMRegister x1 = xmm1;
3384 const XMMRegister x2 = xmm2;
3385 const XMMRegister x3 = xmm3;
3386
3387 const XMMRegister x4 = xmm4;
3388 const XMMRegister x5 = xmm5;
3389 const XMMRegister x6 = xmm6;
3390 const XMMRegister x7 = xmm7;
3391
3392 const Register tmp = rbx;
3393
3394 BLOCK_COMMENT("Entry:");
3395 __ enter(); // required for proper stackwalking of RuntimeStub frame
3396 __ fast_log10(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp);
3397 __ leave(); // required for proper stackwalking of RuntimeStub frame
3398 __ ret(0);
3399
3400 return start;
3401
3402 }
3403
generate_libmPow()3404 address generate_libmPow() {
3405 StubCodeMark mark(this, "StubRoutines", "libmPow");
3406
3407 address start = __ pc();
3408
3409 const XMMRegister x0 = xmm0;
3410 const XMMRegister x1 = xmm1;
3411 const XMMRegister x2 = xmm2;
3412 const XMMRegister x3 = xmm3;
3413
3414 const XMMRegister x4 = xmm4;
3415 const XMMRegister x5 = xmm5;
3416 const XMMRegister x6 = xmm6;
3417 const XMMRegister x7 = xmm7;
3418
3419 const Register tmp = rbx;
3420
3421 BLOCK_COMMENT("Entry:");
3422 __ enter(); // required for proper stackwalking of RuntimeStub frame
3423 __ fast_pow(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp);
3424 __ leave(); // required for proper stackwalking of RuntimeStub frame
3425 __ ret(0);
3426
3427 return start;
3428
3429 }
3430
generate_libm_reduce_pi04l()3431 address generate_libm_reduce_pi04l() {
3432 StubCodeMark mark(this, "StubRoutines", "libm_reduce_pi04l");
3433
3434 address start = __ pc();
3435
3436 BLOCK_COMMENT("Entry:");
3437 __ libm_reduce_pi04l(rax, rcx, rdx, rbx, rsi, rdi, rbp, rsp);
3438
3439 return start;
3440
3441 }
3442
generate_libm_sin_cos_huge()3443 address generate_libm_sin_cos_huge() {
3444 StubCodeMark mark(this, "StubRoutines", "libm_sin_cos_huge");
3445
3446 address start = __ pc();
3447
3448 const XMMRegister x0 = xmm0;
3449 const XMMRegister x1 = xmm1;
3450
3451 BLOCK_COMMENT("Entry:");
3452 __ libm_sincos_huge(x0, x1, rax, rcx, rdx, rbx, rsi, rdi, rbp, rsp);
3453
3454 return start;
3455
3456 }
3457
generate_libmSin()3458 address generate_libmSin() {
3459 StubCodeMark mark(this, "StubRoutines", "libmSin");
3460
3461 address start = __ pc();
3462
3463 const XMMRegister x0 = xmm0;
3464 const XMMRegister x1 = xmm1;
3465 const XMMRegister x2 = xmm2;
3466 const XMMRegister x3 = xmm3;
3467
3468 const XMMRegister x4 = xmm4;
3469 const XMMRegister x5 = xmm5;
3470 const XMMRegister x6 = xmm6;
3471 const XMMRegister x7 = xmm7;
3472
3473 BLOCK_COMMENT("Entry:");
3474 __ enter(); // required for proper stackwalking of RuntimeStub frame
3475 __ fast_sin(x0, x1, x2, x3, x4, x5, x6, x7, rax, rbx, rdx);
3476 __ leave(); // required for proper stackwalking of RuntimeStub frame
3477 __ ret(0);
3478
3479 return start;
3480
3481 }
3482
generate_libmCos()3483 address generate_libmCos() {
3484 StubCodeMark mark(this, "StubRoutines", "libmCos");
3485
3486 address start = __ pc();
3487
3488 const XMMRegister x0 = xmm0;
3489 const XMMRegister x1 = xmm1;
3490 const XMMRegister x2 = xmm2;
3491 const XMMRegister x3 = xmm3;
3492
3493 const XMMRegister x4 = xmm4;
3494 const XMMRegister x5 = xmm5;
3495 const XMMRegister x6 = xmm6;
3496 const XMMRegister x7 = xmm7;
3497
3498 const Register tmp = rbx;
3499
3500 BLOCK_COMMENT("Entry:");
3501 __ enter(); // required for proper stackwalking of RuntimeStub frame
3502 __ fast_cos(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp);
3503 __ leave(); // required for proper stackwalking of RuntimeStub frame
3504 __ ret(0);
3505
3506 return start;
3507
3508 }
3509
generate_libm_tan_cot_huge()3510 address generate_libm_tan_cot_huge() {
3511 StubCodeMark mark(this, "StubRoutines", "libm_tan_cot_huge");
3512
3513 address start = __ pc();
3514
3515 const XMMRegister x0 = xmm0;
3516 const XMMRegister x1 = xmm1;
3517
3518 BLOCK_COMMENT("Entry:");
3519 __ libm_tancot_huge(x0, x1, rax, rcx, rdx, rbx, rsi, rdi, rbp, rsp);
3520
3521 return start;
3522
3523 }
3524
generate_libmTan()3525 address generate_libmTan() {
3526 StubCodeMark mark(this, "StubRoutines", "libmTan");
3527
3528 address start = __ pc();
3529
3530 const XMMRegister x0 = xmm0;
3531 const XMMRegister x1 = xmm1;
3532 const XMMRegister x2 = xmm2;
3533 const XMMRegister x3 = xmm3;
3534
3535 const XMMRegister x4 = xmm4;
3536 const XMMRegister x5 = xmm5;
3537 const XMMRegister x6 = xmm6;
3538 const XMMRegister x7 = xmm7;
3539
3540 const Register tmp = rbx;
3541
3542 BLOCK_COMMENT("Entry:");
3543 __ enter(); // required for proper stackwalking of RuntimeStub frame
3544 __ fast_tan(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp);
3545 __ leave(); // required for proper stackwalking of RuntimeStub frame
3546 __ ret(0);
3547
3548 return start;
3549
3550 }
3551
3552 // Safefetch stubs.
generate_safefetch(const char * name,int size,address * entry,address * fault_pc,address * continuation_pc)3553 void generate_safefetch(const char* name, int size, address* entry,
3554 address* fault_pc, address* continuation_pc) {
3555 // safefetch signatures:
3556 // int SafeFetch32(int* adr, int errValue);
3557 // intptr_t SafeFetchN (intptr_t* adr, intptr_t errValue);
3558
3559 StubCodeMark mark(this, "StubRoutines", name);
3560
3561 // Entry point, pc or function descriptor.
3562 *entry = __ pc();
3563
3564 __ movl(rax, Address(rsp, 0x8));
3565 __ movl(rcx, Address(rsp, 0x4));
3566 // Load *adr into eax, may fault.
3567 *fault_pc = __ pc();
3568 switch (size) {
3569 case 4:
3570 // int32_t
3571 __ movl(rax, Address(rcx, 0));
3572 break;
3573 case 8:
3574 // int64_t
3575 Unimplemented();
3576 break;
3577 default:
3578 ShouldNotReachHere();
3579 }
3580
3581 // Return errValue or *adr.
3582 *continuation_pc = __ pc();
3583 __ ret(0);
3584 }
3585
3586 public:
3587 // Information about frame layout at time of blocking runtime call.
3588 // Note that we only have to preserve callee-saved registers since
3589 // the compilers are responsible for supplying a continuation point
3590 // if they expect all registers to be preserved.
3591 enum layout {
3592 thread_off, // last_java_sp
3593 arg1_off,
3594 arg2_off,
3595 rbp_off, // callee saved register
3596 ret_pc,
3597 framesize
3598 };
3599
3600 private:
3601
3602 #undef __
3603 #define __ masm->
3604
3605 //------------------------------------------------------------------------------------------------------------------------
3606 // Continuation point for throwing of implicit exceptions that are not handled in
3607 // the current activation. Fabricates an exception oop and initiates normal
3608 // exception dispatching in this frame.
3609 //
3610 // Previously the compiler (c2) allowed for callee save registers on Java calls.
3611 // This is no longer true after adapter frames were removed but could possibly
3612 // be brought back in the future if the interpreter code was reworked and it
3613 // was deemed worthwhile. The comment below was left to describe what must
3614 // happen here if callee saves were resurrected. As it stands now this stub
3615 // could actually be a vanilla BufferBlob and have now oopMap at all.
3616 // Since it doesn't make much difference we've chosen to leave it the
3617 // way it was in the callee save days and keep the comment.
3618
3619 // If we need to preserve callee-saved values we need a callee-saved oop map and
3620 // therefore have to make these stubs into RuntimeStubs rather than BufferBlobs.
3621 // If the compiler needs all registers to be preserved between the fault
3622 // point and the exception handler then it must assume responsibility for that in
3623 // AbstractCompiler::continuation_for_implicit_null_exception or
3624 // continuation_for_implicit_division_by_zero_exception. All other implicit
3625 // exceptions (e.g., NullPointerException or AbstractMethodError on entry) are
3626 // either at call sites or otherwise assume that stack unwinding will be initiated,
3627 // so caller saved registers were assumed volatile in the compiler.
generate_throw_exception(const char * name,address runtime_entry,Register arg1=noreg,Register arg2=noreg)3628 address generate_throw_exception(const char* name, address runtime_entry,
3629 Register arg1 = noreg, Register arg2 = noreg) {
3630
3631 int insts_size = 256;
3632 int locs_size = 32;
3633
3634 CodeBuffer code(name, insts_size, locs_size);
3635 OopMapSet* oop_maps = new OopMapSet();
3636 MacroAssembler* masm = new MacroAssembler(&code);
3637
3638 address start = __ pc();
3639
3640 // This is an inlined and slightly modified version of call_VM
3641 // which has the ability to fetch the return PC out of
3642 // thread-local storage and also sets up last_Java_sp slightly
3643 // differently than the real call_VM
3644 Register java_thread = rbx;
3645 __ get_thread(java_thread);
3646
3647 __ enter(); // required for proper stackwalking of RuntimeStub frame
3648
3649 // pc and rbp, already pushed
3650 __ subptr(rsp, (framesize-2) * wordSize); // prolog
3651
3652 // Frame is now completed as far as size and linkage.
3653
3654 int frame_complete = __ pc() - start;
3655
3656 // push java thread (becomes first argument of C function)
3657 __ movptr(Address(rsp, thread_off * wordSize), java_thread);
3658 if (arg1 != noreg) {
3659 __ movptr(Address(rsp, arg1_off * wordSize), arg1);
3660 }
3661 if (arg2 != noreg) {
3662 assert(arg1 != noreg, "missing reg arg");
3663 __ movptr(Address(rsp, arg2_off * wordSize), arg2);
3664 }
3665
3666 // Set up last_Java_sp and last_Java_fp
3667 __ set_last_Java_frame(java_thread, rsp, rbp, NULL);
3668
3669 // Call runtime
3670 BLOCK_COMMENT("call runtime_entry");
3671 __ call(RuntimeAddress(runtime_entry));
3672 // Generate oop map
3673 OopMap* map = new OopMap(framesize, 0);
3674 oop_maps->add_gc_map(__ pc() - start, map);
3675
3676 // restore the thread (cannot use the pushed argument since arguments
3677 // may be overwritten by C code generated by an optimizing compiler);
3678 // however can use the register value directly if it is callee saved.
3679 __ get_thread(java_thread);
3680
3681 __ reset_last_Java_frame(java_thread, true);
3682
3683 __ leave(); // required for proper stackwalking of RuntimeStub frame
3684
3685 // check for pending exceptions
3686 #ifdef ASSERT
3687 Label L;
3688 __ cmpptr(Address(java_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD);
3689 __ jcc(Assembler::notEqual, L);
3690 __ should_not_reach_here();
3691 __ bind(L);
3692 #endif /* ASSERT */
3693 __ jump(RuntimeAddress(StubRoutines::forward_exception_entry()));
3694
3695
3696 RuntimeStub* stub = RuntimeStub::new_runtime_stub(name, &code, frame_complete, framesize, oop_maps, false);
3697 return stub->entry_point();
3698 }
3699
3700
create_control_words()3701 void create_control_words() {
3702 // Round to nearest, 53-bit mode, exceptions masked
3703 StubRoutines::_fpu_cntrl_wrd_std = 0x027F;
3704 // Round to zero, 53-bit mode, exception mased
3705 StubRoutines::_fpu_cntrl_wrd_trunc = 0x0D7F;
3706 // Round to nearest, 24-bit mode, exceptions masked
3707 StubRoutines::_fpu_cntrl_wrd_24 = 0x007F;
3708 // Round to nearest, 64-bit mode, exceptions masked
3709 StubRoutines::_fpu_cntrl_wrd_64 = 0x037F;
3710 // Round to nearest, 64-bit mode, exceptions masked
3711 StubRoutines::_mxcsr_std = 0x1F80;
3712 // Note: the following two constants are 80-bit values
3713 // layout is critical for correct loading by FPU.
3714 // Bias for strict fp multiply/divide
3715 StubRoutines::_fpu_subnormal_bias1[0]= 0x00000000; // 2^(-15360) == 0x03ff 8000 0000 0000 0000
3716 StubRoutines::_fpu_subnormal_bias1[1]= 0x80000000;
3717 StubRoutines::_fpu_subnormal_bias1[2]= 0x03ff;
3718 // Un-Bias for strict fp multiply/divide
3719 StubRoutines::_fpu_subnormal_bias2[0]= 0x00000000; // 2^(+15360) == 0x7bff 8000 0000 0000 0000
3720 StubRoutines::_fpu_subnormal_bias2[1]= 0x80000000;
3721 StubRoutines::_fpu_subnormal_bias2[2]= 0x7bff;
3722 }
3723
3724 //---------------------------------------------------------------------------
3725 // Initialization
3726
generate_initial()3727 void generate_initial() {
3728 // Generates all stubs and initializes the entry points
3729
3730 //------------------------------------------------------------------------------------------------------------------------
3731 // entry points that exist in all platforms
3732 // Note: This is code that could be shared among different platforms - however the benefit seems to be smaller than
3733 // the disadvantage of having a much more complicated generator structure. See also comment in stubRoutines.hpp.
3734 StubRoutines::_forward_exception_entry = generate_forward_exception();
3735
3736 StubRoutines::_call_stub_entry =
3737 generate_call_stub(StubRoutines::_call_stub_return_address);
3738 // is referenced by megamorphic call
3739 StubRoutines::_catch_exception_entry = generate_catch_exception();
3740
3741 // These are currently used by Solaris/Intel
3742 StubRoutines::_atomic_xchg_entry = generate_atomic_xchg();
3743
3744 // platform dependent
3745 create_control_words();
3746
3747 StubRoutines::x86::_verify_mxcsr_entry = generate_verify_mxcsr();
3748 StubRoutines::x86::_verify_fpu_cntrl_wrd_entry = generate_verify_fpu_cntrl_wrd();
3749 StubRoutines::_d2i_wrapper = generate_d2i_wrapper(T_INT,
3750 CAST_FROM_FN_PTR(address, SharedRuntime::d2i));
3751 StubRoutines::_d2l_wrapper = generate_d2i_wrapper(T_LONG,
3752 CAST_FROM_FN_PTR(address, SharedRuntime::d2l));
3753
3754 // Build this early so it's available for the interpreter
3755 StubRoutines::_throw_StackOverflowError_entry = generate_throw_exception("StackOverflowError throw_exception",
3756 CAST_FROM_FN_PTR(address, SharedRuntime::throw_StackOverflowError));
3757 StubRoutines::_throw_delayed_StackOverflowError_entry = generate_throw_exception("delayed StackOverflowError throw_exception",
3758 CAST_FROM_FN_PTR(address, SharedRuntime::throw_delayed_StackOverflowError));
3759
3760 if (UseCRC32Intrinsics) {
3761 // set table address before stub generation which use it
3762 StubRoutines::_crc_table_adr = (address)StubRoutines::x86::_crc_table;
3763 StubRoutines::_updateBytesCRC32 = generate_updateBytesCRC32();
3764 }
3765
3766 if (UseCRC32CIntrinsics) {
3767 bool supports_clmul = VM_Version::supports_clmul();
3768 StubRoutines::x86::generate_CRC32C_table(supports_clmul);
3769 StubRoutines::_crc32c_table_addr = (address)StubRoutines::x86::_crc32c_table;
3770 StubRoutines::_updateBytesCRC32C = generate_updateBytesCRC32C(supports_clmul);
3771 }
3772 if (VM_Version::supports_sse2() && UseLibmIntrinsic && InlineIntrinsics) {
3773 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin) ||
3774 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos) ||
3775 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dtan)) {
3776 StubRoutines::x86::_L_2il0floatpacket_0_adr = (address)StubRoutines::x86::_L_2il0floatpacket_0;
3777 StubRoutines::x86::_Pi4Inv_adr = (address)StubRoutines::x86::_Pi4Inv;
3778 StubRoutines::x86::_Pi4x3_adr = (address)StubRoutines::x86::_Pi4x3;
3779 StubRoutines::x86::_Pi4x4_adr = (address)StubRoutines::x86::_Pi4x4;
3780 StubRoutines::x86::_ones_adr = (address)StubRoutines::x86::_ones;
3781 }
3782 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dexp)) {
3783 StubRoutines::_dexp = generate_libmExp();
3784 }
3785 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dlog)) {
3786 StubRoutines::_dlog = generate_libmLog();
3787 }
3788 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dlog10)) {
3789 StubRoutines::_dlog10 = generate_libmLog10();
3790 }
3791 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dpow)) {
3792 StubRoutines::_dpow = generate_libmPow();
3793 }
3794 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin) ||
3795 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos) ||
3796 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dtan)) {
3797 StubRoutines::_dlibm_reduce_pi04l = generate_libm_reduce_pi04l();
3798 }
3799 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin) ||
3800 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos)) {
3801 StubRoutines::_dlibm_sin_cos_huge = generate_libm_sin_cos_huge();
3802 }
3803 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin)) {
3804 StubRoutines::_dsin = generate_libmSin();
3805 }
3806 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos)) {
3807 StubRoutines::_dcos = generate_libmCos();
3808 }
3809 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dtan)) {
3810 StubRoutines::_dlibm_tan_cot_huge = generate_libm_tan_cot_huge();
3811 StubRoutines::_dtan = generate_libmTan();
3812 }
3813 }
3814 }
3815
generate_all()3816 void generate_all() {
3817 // Generates all stubs and initializes the entry points
3818
3819 // These entry points require SharedInfo::stack0 to be set up in non-core builds
3820 // and need to be relocatable, so they each fabricate a RuntimeStub internally.
3821 StubRoutines::_throw_AbstractMethodError_entry = generate_throw_exception("AbstractMethodError throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_AbstractMethodError));
3822 StubRoutines::_throw_IncompatibleClassChangeError_entry= generate_throw_exception("IncompatibleClassChangeError throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_IncompatibleClassChangeError));
3823 StubRoutines::_throw_NullPointerException_at_call_entry= generate_throw_exception("NullPointerException at call throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_NullPointerException_at_call));
3824
3825 //------------------------------------------------------------------------------------------------------------------------
3826 // entry points that are platform specific
3827
3828 // support for verify_oop (must happen after universe_init)
3829 StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop();
3830
3831 // arraycopy stubs used by compilers
3832 generate_arraycopy_stubs();
3833
3834 // don't bother generating these AES intrinsic stubs unless global flag is set
3835 if (UseAESIntrinsics) {
3836 StubRoutines::x86::_key_shuffle_mask_addr = generate_key_shuffle_mask(); // might be needed by the others
3837
3838 StubRoutines::_aescrypt_encryptBlock = generate_aescrypt_encryptBlock();
3839 StubRoutines::_aescrypt_decryptBlock = generate_aescrypt_decryptBlock();
3840 StubRoutines::_cipherBlockChaining_encryptAESCrypt = generate_cipherBlockChaining_encryptAESCrypt();
3841 StubRoutines::_cipherBlockChaining_decryptAESCrypt = generate_cipherBlockChaining_decryptAESCrypt_Parallel();
3842 }
3843
3844 if (UseAESCTRIntrinsics) {
3845 StubRoutines::x86::_counter_shuffle_mask_addr = generate_counter_shuffle_mask();
3846 StubRoutines::_counterMode_AESCrypt = generate_counterMode_AESCrypt_Parallel();
3847 }
3848
3849 if (UseSHA1Intrinsics) {
3850 StubRoutines::x86::_upper_word_mask_addr = generate_upper_word_mask();
3851 StubRoutines::x86::_shuffle_byte_flip_mask_addr = generate_shuffle_byte_flip_mask();
3852 StubRoutines::_sha1_implCompress = generate_sha1_implCompress(false, "sha1_implCompress");
3853 StubRoutines::_sha1_implCompressMB = generate_sha1_implCompress(true, "sha1_implCompressMB");
3854 }
3855 if (UseSHA256Intrinsics) {
3856 StubRoutines::x86::_k256_adr = (address)StubRoutines::x86::_k256;
3857 StubRoutines::x86::_pshuffle_byte_flip_mask_addr = generate_pshuffle_byte_flip_mask();
3858 StubRoutines::_sha256_implCompress = generate_sha256_implCompress(false, "sha256_implCompress");
3859 StubRoutines::_sha256_implCompressMB = generate_sha256_implCompress(true, "sha256_implCompressMB");
3860 }
3861
3862 // Generate GHASH intrinsics code
3863 if (UseGHASHIntrinsics) {
3864 StubRoutines::x86::_ghash_long_swap_mask_addr = generate_ghash_long_swap_mask();
3865 StubRoutines::x86::_ghash_byte_swap_mask_addr = generate_ghash_byte_swap_mask();
3866 StubRoutines::_ghash_processBlocks = generate_ghash_processBlocks();
3867 }
3868
3869 // Safefetch stubs.
3870 generate_safefetch("SafeFetch32", sizeof(int), &StubRoutines::_safefetch32_entry,
3871 &StubRoutines::_safefetch32_fault_pc,
3872 &StubRoutines::_safefetch32_continuation_pc);
3873 StubRoutines::_safefetchN_entry = StubRoutines::_safefetch32_entry;
3874 StubRoutines::_safefetchN_fault_pc = StubRoutines::_safefetch32_fault_pc;
3875 StubRoutines::_safefetchN_continuation_pc = StubRoutines::_safefetch32_continuation_pc;
3876 }
3877
3878
3879 public:
StubGenerator(CodeBuffer * code,bool all)3880 StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) {
3881 if (all) {
3882 generate_all();
3883 } else {
3884 generate_initial();
3885 }
3886 }
3887 }; // end class declaration
3888
3889
StubGenerator_generate(CodeBuffer * code,bool all)3890 void StubGenerator_generate(CodeBuffer* code, bool all) {
3891 StubGenerator g(code, all);
3892 }
3893