Mercurial > hg > truffle
annotate src/cpu/x86/vm/stubGenerator_x86_64.cpp @ 2313:d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
Summary: Rearranged the pre-barrier placement in arraycopy stubs so that they are properly called in case of chained calls. Also refactored the code a little bit so that it looks uniform across the platforms and is more readable.
Reviewed-by: never, kvn
author | iveresov |
---|---|
date | Tue, 22 Feb 2011 15:25:02 -0800 |
parents | bbefa3ca1543 |
children | 0ac769a57c64 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "asm/assembler.hpp" | |
27 #include "assembler_x86.inline.hpp" | |
28 #include "interpreter/interpreter.hpp" | |
29 #include "nativeInst_x86.hpp" | |
30 #include "oops/instanceOop.hpp" | |
31 #include "oops/methodOop.hpp" | |
32 #include "oops/objArrayKlass.hpp" | |
33 #include "oops/oop.inline.hpp" | |
34 #include "prims/methodHandles.hpp" | |
35 #include "runtime/frame.inline.hpp" | |
36 #include "runtime/handles.inline.hpp" | |
37 #include "runtime/sharedRuntime.hpp" | |
38 #include "runtime/stubCodeGenerator.hpp" | |
39 #include "runtime/stubRoutines.hpp" | |
40 #include "utilities/top.hpp" | |
41 #ifdef TARGET_OS_FAMILY_linux | |
42 # include "thread_linux.inline.hpp" | |
43 #endif | |
44 #ifdef TARGET_OS_FAMILY_solaris | |
45 # include "thread_solaris.inline.hpp" | |
46 #endif | |
47 #ifdef TARGET_OS_FAMILY_windows | |
48 # include "thread_windows.inline.hpp" | |
49 #endif | |
50 #ifdef COMPILER2 | |
51 #include "opto/runtime.hpp" | |
52 #endif | |
0 | 53 |
54 // Declaration and definition of StubGenerator (no .hpp file). | |
55 // For a more detailed description of the stub routine structure | |
56 // see the comment in stubRoutines.hpp | |
57 | |
58 #define __ _masm-> | |
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59 #define TIMES_OOP (UseCompressedOops ? Address::times_4 : Address::times_8) |
304 | 60 #define a__ ((Assembler*)_masm)-> |
0 | 61 |
62 #ifdef PRODUCT | |
63 #define BLOCK_COMMENT(str) /* nothing */ | |
64 #else | |
65 #define BLOCK_COMMENT(str) __ block_comment(str) | |
66 #endif | |
67 | |
68 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") | |
69 const int MXCSR_MASK = 0xFFC0; // Mask out any pending exceptions | |
70 | |
71 // Stub Code definitions | |
72 | |
73 static address handle_unsafe_access() { | |
74 JavaThread* thread = JavaThread::current(); | |
75 address pc = thread->saved_exception_pc(); | |
76 // pc is the instruction which we must emulate | |
77 // doing a no-op is fine: return garbage from the load | |
78 // therefore, compute npc | |
79 address npc = Assembler::locate_next_instruction(pc); | |
80 | |
81 // request an async exception | |
82 thread->set_pending_unsafe_access_error(); | |
83 | |
84 // return address of next instruction to execute | |
85 return npc; | |
86 } | |
87 | |
88 class StubGenerator: public StubCodeGenerator { | |
89 private: | |
90 | |
91 #ifdef PRODUCT | |
92 #define inc_counter_np(counter) (0) | |
93 #else | |
94 void inc_counter_np_(int& counter) { | |
95 __ incrementl(ExternalAddress((address)&counter)); | |
96 } | |
97 #define inc_counter_np(counter) \ | |
98 BLOCK_COMMENT("inc_counter " #counter); \ | |
99 inc_counter_np_(counter); | |
100 #endif | |
101 | |
102 // Call stubs are used to call Java from C | |
103 // | |
104 // Linux Arguments: | |
105 // c_rarg0: call wrapper address address | |
106 // c_rarg1: result address | |
107 // c_rarg2: result type BasicType | |
108 // c_rarg3: method methodOop | |
109 // c_rarg4: (interpreter) entry point address | |
110 // c_rarg5: parameters intptr_t* | |
111 // 16(rbp): parameter size (in words) int | |
112 // 24(rbp): thread Thread* | |
113 // | |
114 // [ return_from_Java ] <--- rsp | |
115 // [ argument word n ] | |
116 // ... | |
117 // -12 [ argument word 1 ] | |
118 // -11 [ saved r15 ] <--- rsp_after_call | |
119 // -10 [ saved r14 ] | |
120 // -9 [ saved r13 ] | |
121 // -8 [ saved r12 ] | |
122 // -7 [ saved rbx ] | |
123 // -6 [ call wrapper ] | |
124 // -5 [ result ] | |
125 // -4 [ result type ] | |
126 // -3 [ method ] | |
127 // -2 [ entry point ] | |
128 // -1 [ parameters ] | |
129 // 0 [ saved rbp ] <--- rbp | |
130 // 1 [ return address ] | |
131 // 2 [ parameter size ] | |
132 // 3 [ thread ] | |
133 // | |
134 // Windows Arguments: | |
135 // c_rarg0: call wrapper address address | |
136 // c_rarg1: result address | |
137 // c_rarg2: result type BasicType | |
138 // c_rarg3: method methodOop | |
139 // 48(rbp): (interpreter) entry point address | |
140 // 56(rbp): parameters intptr_t* | |
141 // 64(rbp): parameter size (in words) int | |
142 // 72(rbp): thread Thread* | |
143 // | |
144 // [ return_from_Java ] <--- rsp | |
145 // [ argument word n ] | |
146 // ... | |
147 // -8 [ argument word 1 ] | |
148 // -7 [ saved r15 ] <--- rsp_after_call | |
149 // -6 [ saved r14 ] | |
150 // -5 [ saved r13 ] | |
151 // -4 [ saved r12 ] | |
152 // -3 [ saved rdi ] | |
153 // -2 [ saved rsi ] | |
154 // -1 [ saved rbx ] | |
155 // 0 [ saved rbp ] <--- rbp | |
156 // 1 [ return address ] | |
157 // 2 [ call wrapper ] | |
158 // 3 [ result ] | |
159 // 4 [ result type ] | |
160 // 5 [ method ] | |
161 // 6 [ entry point ] | |
162 // 7 [ parameters ] | |
163 // 8 [ parameter size ] | |
164 // 9 [ thread ] | |
165 // | |
166 // Windows reserves the callers stack space for arguments 1-4. | |
167 // We spill c_rarg0-c_rarg3 to this space. | |
168 | |
169 // Call stub stack layout word offsets from rbp | |
170 enum call_stub_layout { | |
171 #ifdef _WIN64 | |
172 rsp_after_call_off = -7, | |
173 r15_off = rsp_after_call_off, | |
174 r14_off = -6, | |
175 r13_off = -5, | |
176 r12_off = -4, | |
177 rdi_off = -3, | |
178 rsi_off = -2, | |
179 rbx_off = -1, | |
180 rbp_off = 0, | |
181 retaddr_off = 1, | |
182 call_wrapper_off = 2, | |
183 result_off = 3, | |
184 result_type_off = 4, | |
185 method_off = 5, | |
186 entry_point_off = 6, | |
187 parameters_off = 7, | |
188 parameter_size_off = 8, | |
189 thread_off = 9 | |
190 #else | |
191 rsp_after_call_off = -12, | |
192 mxcsr_off = rsp_after_call_off, | |
193 r15_off = -11, | |
194 r14_off = -10, | |
195 r13_off = -9, | |
196 r12_off = -8, | |
197 rbx_off = -7, | |
198 call_wrapper_off = -6, | |
199 result_off = -5, | |
200 result_type_off = -4, | |
201 method_off = -3, | |
202 entry_point_off = -2, | |
203 parameters_off = -1, | |
204 rbp_off = 0, | |
205 retaddr_off = 1, | |
206 parameter_size_off = 2, | |
207 thread_off = 3 | |
208 #endif | |
209 }; | |
210 | |
211 address generate_call_stub(address& return_address) { | |
212 assert((int)frame::entry_frame_after_call_words == -(int)rsp_after_call_off + 1 && | |
213 (int)frame::entry_frame_call_wrapper_offset == (int)call_wrapper_off, | |
214 "adjust this code"); | |
215 StubCodeMark mark(this, "StubRoutines", "call_stub"); | |
216 address start = __ pc(); | |
217 | |
218 // same as in generate_catch_exception()! | |
219 const Address rsp_after_call(rbp, rsp_after_call_off * wordSize); | |
220 | |
221 const Address call_wrapper (rbp, call_wrapper_off * wordSize); | |
222 const Address result (rbp, result_off * wordSize); | |
223 const Address result_type (rbp, result_type_off * wordSize); | |
224 const Address method (rbp, method_off * wordSize); | |
225 const Address entry_point (rbp, entry_point_off * wordSize); | |
226 const Address parameters (rbp, parameters_off * wordSize); | |
227 const Address parameter_size(rbp, parameter_size_off * wordSize); | |
228 | |
229 // same as in generate_catch_exception()! | |
230 const Address thread (rbp, thread_off * wordSize); | |
231 | |
232 const Address r15_save(rbp, r15_off * wordSize); | |
233 const Address r14_save(rbp, r14_off * wordSize); | |
234 const Address r13_save(rbp, r13_off * wordSize); | |
235 const Address r12_save(rbp, r12_off * wordSize); | |
236 const Address rbx_save(rbp, rbx_off * wordSize); | |
237 | |
238 // stub code | |
239 __ enter(); | |
304 | 240 __ subptr(rsp, -rsp_after_call_off * wordSize); |
0 | 241 |
242 // save register parameters | |
243 #ifndef _WIN64 | |
304 | 244 __ movptr(parameters, c_rarg5); // parameters |
245 __ movptr(entry_point, c_rarg4); // entry_point | |
0 | 246 #endif |
247 | |
304 | 248 __ movptr(method, c_rarg3); // method |
249 __ movl(result_type, c_rarg2); // result type | |
250 __ movptr(result, c_rarg1); // result | |
251 __ movptr(call_wrapper, c_rarg0); // call wrapper | |
0 | 252 |
253 // save regs belonging to calling function | |
304 | 254 __ movptr(rbx_save, rbx); |
255 __ movptr(r12_save, r12); | |
256 __ movptr(r13_save, r13); | |
257 __ movptr(r14_save, r14); | |
258 __ movptr(r15_save, r15); | |
0 | 259 |
260 #ifdef _WIN64 | |
261 const Address rdi_save(rbp, rdi_off * wordSize); | |
262 const Address rsi_save(rbp, rsi_off * wordSize); | |
263 | |
304 | 264 __ movptr(rsi_save, rsi); |
265 __ movptr(rdi_save, rdi); | |
0 | 266 #else |
267 const Address mxcsr_save(rbp, mxcsr_off * wordSize); | |
268 { | |
269 Label skip_ldmx; | |
270 __ stmxcsr(mxcsr_save); | |
271 __ movl(rax, mxcsr_save); | |
272 __ andl(rax, MXCSR_MASK); // Only check control and mask bits | |
304 | 273 ExternalAddress mxcsr_std(StubRoutines::x86::mxcsr_std()); |
0 | 274 __ cmp32(rax, mxcsr_std); |
275 __ jcc(Assembler::equal, skip_ldmx); | |
276 __ ldmxcsr(mxcsr_std); | |
277 __ bind(skip_ldmx); | |
278 } | |
279 #endif | |
280 | |
281 // Load up thread register | |
304 | 282 __ movptr(r15_thread, thread); |
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283 __ reinit_heapbase(); |
0 | 284 |
285 #ifdef ASSERT | |
286 // make sure we have no pending exceptions | |
287 { | |
288 Label L; | |
304 | 289 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
0 | 290 __ jcc(Assembler::equal, L); |
291 __ stop("StubRoutines::call_stub: entered with pending exception"); | |
292 __ bind(L); | |
293 } | |
294 #endif | |
295 | |
296 // pass parameters if any | |
297 BLOCK_COMMENT("pass parameters if any"); | |
298 Label parameters_done; | |
299 __ movl(c_rarg3, parameter_size); | |
300 __ testl(c_rarg3, c_rarg3); | |
301 __ jcc(Assembler::zero, parameters_done); | |
302 | |
303 Label loop; | |
304 | 304 __ movptr(c_rarg2, parameters); // parameter pointer |
305 __ movl(c_rarg1, c_rarg3); // parameter counter is in c_rarg1 | |
0 | 306 __ BIND(loop); |
304 | 307 __ movptr(rax, Address(c_rarg2, 0));// get parameter |
308 __ addptr(c_rarg2, wordSize); // advance to next parameter | |
309 __ decrementl(c_rarg1); // decrement counter | |
310 __ push(rax); // pass parameter | |
0 | 311 __ jcc(Assembler::notZero, loop); |
312 | |
313 // call Java function | |
314 __ BIND(parameters_done); | |
304 | 315 __ movptr(rbx, method); // get methodOop |
316 __ movptr(c_rarg1, entry_point); // get entry_point | |
317 __ mov(r13, rsp); // set sender sp | |
0 | 318 BLOCK_COMMENT("call Java function"); |
319 __ call(c_rarg1); | |
320 | |
321 BLOCK_COMMENT("call_stub_return_address:"); | |
322 return_address = __ pc(); | |
323 | |
324 // store result depending on type (everything that is not | |
325 // T_OBJECT, T_LONG, T_FLOAT or T_DOUBLE is treated as T_INT) | |
304 | 326 __ movptr(c_rarg0, result); |
0 | 327 Label is_long, is_float, is_double, exit; |
328 __ movl(c_rarg1, result_type); | |
329 __ cmpl(c_rarg1, T_OBJECT); | |
330 __ jcc(Assembler::equal, is_long); | |
331 __ cmpl(c_rarg1, T_LONG); | |
332 __ jcc(Assembler::equal, is_long); | |
333 __ cmpl(c_rarg1, T_FLOAT); | |
334 __ jcc(Assembler::equal, is_float); | |
335 __ cmpl(c_rarg1, T_DOUBLE); | |
336 __ jcc(Assembler::equal, is_double); | |
337 | |
338 // handle T_INT case | |
339 __ movl(Address(c_rarg0, 0), rax); | |
340 | |
341 __ BIND(exit); | |
342 | |
343 // pop parameters | |
304 | 344 __ lea(rsp, rsp_after_call); |
0 | 345 |
346 #ifdef ASSERT | |
347 // verify that threads correspond | |
348 { | |
349 Label L, S; | |
304 | 350 __ cmpptr(r15_thread, thread); |
0 | 351 __ jcc(Assembler::notEqual, S); |
352 __ get_thread(rbx); | |
304 | 353 __ cmpptr(r15_thread, rbx); |
0 | 354 __ jcc(Assembler::equal, L); |
355 __ bind(S); | |
356 __ jcc(Assembler::equal, L); | |
357 __ stop("StubRoutines::call_stub: threads must correspond"); | |
358 __ bind(L); | |
359 } | |
360 #endif | |
361 | |
362 // restore regs belonging to calling function | |
304 | 363 __ movptr(r15, r15_save); |
364 __ movptr(r14, r14_save); | |
365 __ movptr(r13, r13_save); | |
366 __ movptr(r12, r12_save); | |
367 __ movptr(rbx, rbx_save); | |
0 | 368 |
369 #ifdef _WIN64 | |
304 | 370 __ movptr(rdi, rdi_save); |
371 __ movptr(rsi, rsi_save); | |
0 | 372 #else |
373 __ ldmxcsr(mxcsr_save); | |
374 #endif | |
375 | |
376 // restore rsp | |
304 | 377 __ addptr(rsp, -rsp_after_call_off * wordSize); |
0 | 378 |
379 // return | |
304 | 380 __ pop(rbp); |
0 | 381 __ ret(0); |
382 | |
383 // handle return types different from T_INT | |
384 __ BIND(is_long); | |
385 __ movq(Address(c_rarg0, 0), rax); | |
386 __ jmp(exit); | |
387 | |
388 __ BIND(is_float); | |
389 __ movflt(Address(c_rarg0, 0), xmm0); | |
390 __ jmp(exit); | |
391 | |
392 __ BIND(is_double); | |
393 __ movdbl(Address(c_rarg0, 0), xmm0); | |
394 __ jmp(exit); | |
395 | |
396 return start; | |
397 } | |
398 | |
399 // Return point for a Java call if there's an exception thrown in | |
400 // Java code. The exception is caught and transformed into a | |
401 // pending exception stored in JavaThread that can be tested from | |
402 // within the VM. | |
403 // | |
404 // Note: Usually the parameters are removed by the callee. In case | |
405 // of an exception crossing an activation frame boundary, that is | |
406 // not the case if the callee is compiled code => need to setup the | |
407 // rsp. | |
408 // | |
409 // rax: exception oop | |
410 | |
411 address generate_catch_exception() { | |
412 StubCodeMark mark(this, "StubRoutines", "catch_exception"); | |
413 address start = __ pc(); | |
414 | |
415 // same as in generate_call_stub(): | |
416 const Address rsp_after_call(rbp, rsp_after_call_off * wordSize); | |
417 const Address thread (rbp, thread_off * wordSize); | |
418 | |
419 #ifdef ASSERT | |
420 // verify that threads correspond | |
421 { | |
422 Label L, S; | |
304 | 423 __ cmpptr(r15_thread, thread); |
0 | 424 __ jcc(Assembler::notEqual, S); |
425 __ get_thread(rbx); | |
304 | 426 __ cmpptr(r15_thread, rbx); |
0 | 427 __ jcc(Assembler::equal, L); |
428 __ bind(S); | |
429 __ stop("StubRoutines::catch_exception: threads must correspond"); | |
430 __ bind(L); | |
431 } | |
432 #endif | |
433 | |
434 // set pending exception | |
435 __ verify_oop(rax); | |
436 | |
304 | 437 __ movptr(Address(r15_thread, Thread::pending_exception_offset()), rax); |
0 | 438 __ lea(rscratch1, ExternalAddress((address)__FILE__)); |
304 | 439 __ movptr(Address(r15_thread, Thread::exception_file_offset()), rscratch1); |
0 | 440 __ movl(Address(r15_thread, Thread::exception_line_offset()), (int) __LINE__); |
441 | |
442 // complete return to VM | |
443 assert(StubRoutines::_call_stub_return_address != NULL, | |
444 "_call_stub_return_address must have been generated before"); | |
445 __ jump(RuntimeAddress(StubRoutines::_call_stub_return_address)); | |
446 | |
447 return start; | |
448 } | |
449 | |
450 // Continuation point for runtime calls returning with a pending | |
451 // exception. The pending exception check happened in the runtime | |
452 // or native call stub. The pending exception in Thread is | |
453 // converted into a Java-level exception. | |
454 // | |
455 // Contract with Java-level exception handlers: | |
456 // rax: exception | |
457 // rdx: throwing pc | |
458 // | |
459 // NOTE: At entry of this stub, exception-pc must be on stack !! | |
460 | |
461 address generate_forward_exception() { | |
462 StubCodeMark mark(this, "StubRoutines", "forward exception"); | |
463 address start = __ pc(); | |
464 | |
465 // Upon entry, the sp points to the return address returning into | |
466 // Java (interpreted or compiled) code; i.e., the return address | |
467 // becomes the throwing pc. | |
468 // | |
469 // Arguments pushed before the runtime call are still on the stack | |
470 // but the exception handler will reset the stack pointer -> | |
471 // ignore them. A potential result in registers can be ignored as | |
472 // well. | |
473 | |
474 #ifdef ASSERT | |
475 // make sure this code is only executed if there is a pending exception | |
476 { | |
477 Label L; | |
304 | 478 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL); |
0 | 479 __ jcc(Assembler::notEqual, L); |
480 __ stop("StubRoutines::forward exception: no pending exception (1)"); | |
481 __ bind(L); | |
482 } | |
483 #endif | |
484 | |
485 // compute exception handler into rbx | |
304 | 486 __ movptr(c_rarg0, Address(rsp, 0)); |
0 | 487 BLOCK_COMMENT("call exception_handler_for_return_address"); |
488 __ call_VM_leaf(CAST_FROM_FN_PTR(address, | |
489 SharedRuntime::exception_handler_for_return_address), | |
1295 | 490 r15_thread, c_rarg0); |
304 | 491 __ mov(rbx, rax); |
0 | 492 |
493 // setup rax & rdx, remove return address & clear pending exception | |
304 | 494 __ pop(rdx); |
495 __ movptr(rax, Address(r15_thread, Thread::pending_exception_offset())); | |
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496 __ movptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
0 | 497 |
498 #ifdef ASSERT | |
499 // make sure exception is set | |
500 { | |
501 Label L; | |
304 | 502 __ testptr(rax, rax); |
0 | 503 __ jcc(Assembler::notEqual, L); |
504 __ stop("StubRoutines::forward exception: no pending exception (2)"); | |
505 __ bind(L); | |
506 } | |
507 #endif | |
508 | |
509 // continue at exception handler (return address removed) | |
510 // rax: exception | |
511 // rbx: exception handler | |
512 // rdx: throwing pc | |
513 __ verify_oop(rax); | |
514 __ jmp(rbx); | |
515 | |
516 return start; | |
517 } | |
518 | |
519 // Support for jint atomic::xchg(jint exchange_value, volatile jint* dest) | |
520 // | |
521 // Arguments : | |
522 // c_rarg0: exchange_value | |
523 // c_rarg0: dest | |
524 // | |
525 // Result: | |
526 // *dest <- ex, return (orig *dest) | |
527 address generate_atomic_xchg() { | |
528 StubCodeMark mark(this, "StubRoutines", "atomic_xchg"); | |
529 address start = __ pc(); | |
530 | |
531 __ movl(rax, c_rarg0); // Copy to eax we need a return value anyhow | |
532 __ xchgl(rax, Address(c_rarg1, 0)); // automatic LOCK | |
533 __ ret(0); | |
534 | |
535 return start; | |
536 } | |
537 | |
538 // Support for intptr_t atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) | |
539 // | |
540 // Arguments : | |
541 // c_rarg0: exchange_value | |
542 // c_rarg1: dest | |
543 // | |
544 // Result: | |
545 // *dest <- ex, return (orig *dest) | |
546 address generate_atomic_xchg_ptr() { | |
547 StubCodeMark mark(this, "StubRoutines", "atomic_xchg_ptr"); | |
548 address start = __ pc(); | |
549 | |
304 | 550 __ movptr(rax, c_rarg0); // Copy to eax we need a return value anyhow |
551 __ xchgptr(rax, Address(c_rarg1, 0)); // automatic LOCK | |
0 | 552 __ ret(0); |
553 | |
554 return start; | |
555 } | |
556 | |
557 // Support for jint atomic::atomic_cmpxchg(jint exchange_value, volatile jint* dest, | |
558 // jint compare_value) | |
559 // | |
560 // Arguments : | |
561 // c_rarg0: exchange_value | |
562 // c_rarg1: dest | |
563 // c_rarg2: compare_value | |
564 // | |
565 // Result: | |
566 // if ( compare_value == *dest ) { | |
567 // *dest = exchange_value | |
568 // return compare_value; | |
569 // else | |
570 // return *dest; | |
571 address generate_atomic_cmpxchg() { | |
572 StubCodeMark mark(this, "StubRoutines", "atomic_cmpxchg"); | |
573 address start = __ pc(); | |
574 | |
575 __ movl(rax, c_rarg2); | |
576 if ( os::is_MP() ) __ lock(); | |
577 __ cmpxchgl(c_rarg0, Address(c_rarg1, 0)); | |
578 __ ret(0); | |
579 | |
580 return start; | |
581 } | |
582 | |
583 // Support for jint atomic::atomic_cmpxchg_long(jlong exchange_value, | |
584 // volatile jlong* dest, | |
585 // jlong compare_value) | |
586 // Arguments : | |
587 // c_rarg0: exchange_value | |
588 // c_rarg1: dest | |
589 // c_rarg2: compare_value | |
590 // | |
591 // Result: | |
592 // if ( compare_value == *dest ) { | |
593 // *dest = exchange_value | |
594 // return compare_value; | |
595 // else | |
596 // return *dest; | |
597 address generate_atomic_cmpxchg_long() { | |
598 StubCodeMark mark(this, "StubRoutines", "atomic_cmpxchg_long"); | |
599 address start = __ pc(); | |
600 | |
601 __ movq(rax, c_rarg2); | |
602 if ( os::is_MP() ) __ lock(); | |
603 __ cmpxchgq(c_rarg0, Address(c_rarg1, 0)); | |
604 __ ret(0); | |
605 | |
606 return start; | |
607 } | |
608 | |
609 // Support for jint atomic::add(jint add_value, volatile jint* dest) | |
610 // | |
611 // Arguments : | |
612 // c_rarg0: add_value | |
613 // c_rarg1: dest | |
614 // | |
615 // Result: | |
616 // *dest += add_value | |
617 // return *dest; | |
618 address generate_atomic_add() { | |
619 StubCodeMark mark(this, "StubRoutines", "atomic_add"); | |
620 address start = __ pc(); | |
621 | |
622 __ movl(rax, c_rarg0); | |
623 if ( os::is_MP() ) __ lock(); | |
624 __ xaddl(Address(c_rarg1, 0), c_rarg0); | |
625 __ addl(rax, c_rarg0); | |
626 __ ret(0); | |
627 | |
628 return start; | |
629 } | |
630 | |
631 // Support for intptr_t atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) | |
632 // | |
633 // Arguments : | |
634 // c_rarg0: add_value | |
635 // c_rarg1: dest | |
636 // | |
637 // Result: | |
638 // *dest += add_value | |
639 // return *dest; | |
640 address generate_atomic_add_ptr() { | |
641 StubCodeMark mark(this, "StubRoutines", "atomic_add_ptr"); | |
642 address start = __ pc(); | |
643 | |
304 | 644 __ movptr(rax, c_rarg0); // Copy to eax we need a return value anyhow |
0 | 645 if ( os::is_MP() ) __ lock(); |
304 | 646 __ xaddptr(Address(c_rarg1, 0), c_rarg0); |
647 __ addptr(rax, c_rarg0); | |
0 | 648 __ ret(0); |
649 | |
650 return start; | |
651 } | |
652 | |
653 // Support for intptr_t OrderAccess::fence() | |
654 // | |
655 // Arguments : | |
656 // | |
657 // Result: | |
658 address generate_orderaccess_fence() { | |
659 StubCodeMark mark(this, "StubRoutines", "orderaccess_fence"); | |
660 address start = __ pc(); | |
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661 __ membar(Assembler::StoreLoad); |
0 | 662 __ ret(0); |
663 | |
664 return start; | |
665 } | |
666 | |
667 // Support for intptr_t get_previous_fp() | |
668 // | |
669 // This routine is used to find the previous frame pointer for the | |
670 // caller (current_frame_guess). This is used as part of debugging | |
671 // ps() is seemingly lost trying to find frames. | |
672 // This code assumes that caller current_frame_guess) has a frame. | |
673 address generate_get_previous_fp() { | |
674 StubCodeMark mark(this, "StubRoutines", "get_previous_fp"); | |
675 const Address old_fp(rbp, 0); | |
676 const Address older_fp(rax, 0); | |
677 address start = __ pc(); | |
678 | |
679 __ enter(); | |
304 | 680 __ movptr(rax, old_fp); // callers fp |
681 __ movptr(rax, older_fp); // the frame for ps() | |
682 __ pop(rbp); | |
0 | 683 __ ret(0); |
684 | |
685 return start; | |
686 } | |
687 | |
688 //---------------------------------------------------------------------------------------------------- | |
689 // Support for void verify_mxcsr() | |
690 // | |
691 // This routine is used with -Xcheck:jni to verify that native | |
692 // JNI code does not return to Java code without restoring the | |
693 // MXCSR register to our expected state. | |
694 | |
695 address generate_verify_mxcsr() { | |
696 StubCodeMark mark(this, "StubRoutines", "verify_mxcsr"); | |
697 address start = __ pc(); | |
698 | |
699 const Address mxcsr_save(rsp, 0); | |
700 | |
701 if (CheckJNICalls) { | |
702 Label ok_ret; | |
304 | 703 __ push(rax); |
704 __ subptr(rsp, wordSize); // allocate a temp location | |
0 | 705 __ stmxcsr(mxcsr_save); |
706 __ movl(rax, mxcsr_save); | |
707 __ andl(rax, MXCSR_MASK); // Only check control and mask bits | |
304 | 708 __ cmpl(rax, *(int *)(StubRoutines::x86::mxcsr_std())); |
0 | 709 __ jcc(Assembler::equal, ok_ret); |
710 | |
711 __ warn("MXCSR changed by native JNI code, use -XX:+RestoreMXCSROnJNICall"); | |
712 | |
304 | 713 __ ldmxcsr(ExternalAddress(StubRoutines::x86::mxcsr_std())); |
0 | 714 |
715 __ bind(ok_ret); | |
304 | 716 __ addptr(rsp, wordSize); |
717 __ pop(rax); | |
0 | 718 } |
719 | |
720 __ ret(0); | |
721 | |
722 return start; | |
723 } | |
724 | |
725 address generate_f2i_fixup() { | |
726 StubCodeMark mark(this, "StubRoutines", "f2i_fixup"); | |
727 Address inout(rsp, 5 * wordSize); // return address + 4 saves | |
728 | |
729 address start = __ pc(); | |
730 | |
731 Label L; | |
732 | |
304 | 733 __ push(rax); |
734 __ push(c_rarg3); | |
735 __ push(c_rarg2); | |
736 __ push(c_rarg1); | |
0 | 737 |
738 __ movl(rax, 0x7f800000); | |
739 __ xorl(c_rarg3, c_rarg3); | |
740 __ movl(c_rarg2, inout); | |
741 __ movl(c_rarg1, c_rarg2); | |
742 __ andl(c_rarg1, 0x7fffffff); | |
743 __ cmpl(rax, c_rarg1); // NaN? -> 0 | |
744 __ jcc(Assembler::negative, L); | |
745 __ testl(c_rarg2, c_rarg2); // signed ? min_jint : max_jint | |
746 __ movl(c_rarg3, 0x80000000); | |
747 __ movl(rax, 0x7fffffff); | |
748 __ cmovl(Assembler::positive, c_rarg3, rax); | |
749 | |
750 __ bind(L); | |
304 | 751 __ movptr(inout, c_rarg3); |
752 | |
753 __ pop(c_rarg1); | |
754 __ pop(c_rarg2); | |
755 __ pop(c_rarg3); | |
756 __ pop(rax); | |
0 | 757 |
758 __ ret(0); | |
759 | |
760 return start; | |
761 } | |
762 | |
763 address generate_f2l_fixup() { | |
764 StubCodeMark mark(this, "StubRoutines", "f2l_fixup"); | |
765 Address inout(rsp, 5 * wordSize); // return address + 4 saves | |
766 address start = __ pc(); | |
767 | |
768 Label L; | |
769 | |
304 | 770 __ push(rax); |
771 __ push(c_rarg3); | |
772 __ push(c_rarg2); | |
773 __ push(c_rarg1); | |
0 | 774 |
775 __ movl(rax, 0x7f800000); | |
776 __ xorl(c_rarg3, c_rarg3); | |
777 __ movl(c_rarg2, inout); | |
778 __ movl(c_rarg1, c_rarg2); | |
779 __ andl(c_rarg1, 0x7fffffff); | |
780 __ cmpl(rax, c_rarg1); // NaN? -> 0 | |
781 __ jcc(Assembler::negative, L); | |
782 __ testl(c_rarg2, c_rarg2); // signed ? min_jlong : max_jlong | |
783 __ mov64(c_rarg3, 0x8000000000000000); | |
784 __ mov64(rax, 0x7fffffffffffffff); | |
304 | 785 __ cmov(Assembler::positive, c_rarg3, rax); |
0 | 786 |
787 __ bind(L); | |
304 | 788 __ movptr(inout, c_rarg3); |
789 | |
790 __ pop(c_rarg1); | |
791 __ pop(c_rarg2); | |
792 __ pop(c_rarg3); | |
793 __ pop(rax); | |
0 | 794 |
795 __ ret(0); | |
796 | |
797 return start; | |
798 } | |
799 | |
800 address generate_d2i_fixup() { | |
801 StubCodeMark mark(this, "StubRoutines", "d2i_fixup"); | |
802 Address inout(rsp, 6 * wordSize); // return address + 5 saves | |
803 | |
804 address start = __ pc(); | |
805 | |
806 Label L; | |
807 | |
304 | 808 __ push(rax); |
809 __ push(c_rarg3); | |
810 __ push(c_rarg2); | |
811 __ push(c_rarg1); | |
812 __ push(c_rarg0); | |
0 | 813 |
814 __ movl(rax, 0x7ff00000); | |
815 __ movq(c_rarg2, inout); | |
816 __ movl(c_rarg3, c_rarg2); | |
304 | 817 __ mov(c_rarg1, c_rarg2); |
818 __ mov(c_rarg0, c_rarg2); | |
0 | 819 __ negl(c_rarg3); |
304 | 820 __ shrptr(c_rarg1, 0x20); |
0 | 821 __ orl(c_rarg3, c_rarg2); |
822 __ andl(c_rarg1, 0x7fffffff); | |
823 __ xorl(c_rarg2, c_rarg2); | |
824 __ shrl(c_rarg3, 0x1f); | |
825 __ orl(c_rarg1, c_rarg3); | |
826 __ cmpl(rax, c_rarg1); | |
827 __ jcc(Assembler::negative, L); // NaN -> 0 | |
304 | 828 __ testptr(c_rarg0, c_rarg0); // signed ? min_jint : max_jint |
0 | 829 __ movl(c_rarg2, 0x80000000); |
830 __ movl(rax, 0x7fffffff); | |
304 | 831 __ cmov(Assembler::positive, c_rarg2, rax); |
0 | 832 |
833 __ bind(L); | |
304 | 834 __ movptr(inout, c_rarg2); |
835 | |
836 __ pop(c_rarg0); | |
837 __ pop(c_rarg1); | |
838 __ pop(c_rarg2); | |
839 __ pop(c_rarg3); | |
840 __ pop(rax); | |
0 | 841 |
842 __ ret(0); | |
843 | |
844 return start; | |
845 } | |
846 | |
847 address generate_d2l_fixup() { | |
848 StubCodeMark mark(this, "StubRoutines", "d2l_fixup"); | |
849 Address inout(rsp, 6 * wordSize); // return address + 5 saves | |
850 | |
851 address start = __ pc(); | |
852 | |
853 Label L; | |
854 | |
304 | 855 __ push(rax); |
856 __ push(c_rarg3); | |
857 __ push(c_rarg2); | |
858 __ push(c_rarg1); | |
859 __ push(c_rarg0); | |
0 | 860 |
861 __ movl(rax, 0x7ff00000); | |
862 __ movq(c_rarg2, inout); | |
863 __ movl(c_rarg3, c_rarg2); | |
304 | 864 __ mov(c_rarg1, c_rarg2); |
865 __ mov(c_rarg0, c_rarg2); | |
0 | 866 __ negl(c_rarg3); |
304 | 867 __ shrptr(c_rarg1, 0x20); |
0 | 868 __ orl(c_rarg3, c_rarg2); |
869 __ andl(c_rarg1, 0x7fffffff); | |
870 __ xorl(c_rarg2, c_rarg2); | |
871 __ shrl(c_rarg3, 0x1f); | |
872 __ orl(c_rarg1, c_rarg3); | |
873 __ cmpl(rax, c_rarg1); | |
874 __ jcc(Assembler::negative, L); // NaN -> 0 | |
875 __ testq(c_rarg0, c_rarg0); // signed ? min_jlong : max_jlong | |
876 __ mov64(c_rarg2, 0x8000000000000000); | |
877 __ mov64(rax, 0x7fffffffffffffff); | |
878 __ cmovq(Assembler::positive, c_rarg2, rax); | |
879 | |
880 __ bind(L); | |
881 __ movq(inout, c_rarg2); | |
882 | |
304 | 883 __ pop(c_rarg0); |
884 __ pop(c_rarg1); | |
885 __ pop(c_rarg2); | |
886 __ pop(c_rarg3); | |
887 __ pop(rax); | |
0 | 888 |
889 __ ret(0); | |
890 | |
891 return start; | |
892 } | |
893 | |
894 address generate_fp_mask(const char *stub_name, int64_t mask) { | |
1365 | 895 __ align(CodeEntryAlignment); |
0 | 896 StubCodeMark mark(this, "StubRoutines", stub_name); |
897 address start = __ pc(); | |
898 | |
899 __ emit_data64( mask, relocInfo::none ); | |
900 __ emit_data64( mask, relocInfo::none ); | |
901 | |
902 return start; | |
903 } | |
904 | |
905 // The following routine generates a subroutine to throw an | |
906 // asynchronous UnknownError when an unsafe access gets a fault that | |
907 // could not be reasonably prevented by the programmer. (Example: | |
908 // SIGBUS/OBJERR.) | |
909 address generate_handler_for_unsafe_access() { | |
910 StubCodeMark mark(this, "StubRoutines", "handler_for_unsafe_access"); | |
911 address start = __ pc(); | |
912 | |
304 | 913 __ push(0); // hole for return address-to-be |
914 __ pusha(); // push registers | |
0 | 915 Address next_pc(rsp, RegisterImpl::number_of_registers * BytesPerWord); |
916 | |
304 | 917 __ subptr(rsp, frame::arg_reg_save_area_bytes); |
0 | 918 BLOCK_COMMENT("call handle_unsafe_access"); |
919 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, handle_unsafe_access))); | |
304 | 920 __ addptr(rsp, frame::arg_reg_save_area_bytes); |
921 | |
922 __ movptr(next_pc, rax); // stuff next address | |
923 __ popa(); | |
0 | 924 __ ret(0); // jump to next address |
925 | |
926 return start; | |
927 } | |
928 | |
929 // Non-destructive plausibility checks for oops | |
930 // | |
931 // Arguments: | |
932 // all args on stack! | |
933 // | |
934 // Stack after saving c_rarg3: | |
935 // [tos + 0]: saved c_rarg3 | |
936 // [tos + 1]: saved c_rarg2 | |
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937 // [tos + 2]: saved r12 (several TemplateTable methods use it) |
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938 // [tos + 3]: saved flags |
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939 // [tos + 4]: return address |
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940 // * [tos + 5]: error message (char*) |
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941 // * [tos + 6]: object to verify (oop) |
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942 // * [tos + 7]: saved rax - saved by caller and bashed |
1583 | 943 // * [tos + 8]: saved r10 (rscratch1) - saved by caller |
0 | 944 // * = popped on exit |
945 address generate_verify_oop() { | |
946 StubCodeMark mark(this, "StubRoutines", "verify_oop"); | |
947 address start = __ pc(); | |
948 | |
949 Label exit, error; | |
950 | |
304 | 951 __ pushf(); |
0 | 952 __ incrementl(ExternalAddress((address) StubRoutines::verify_oop_count_addr())); |
953 | |
304 | 954 __ push(r12); |
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955 |
0 | 956 // save c_rarg2 and c_rarg3 |
304 | 957 __ push(c_rarg2); |
958 __ push(c_rarg3); | |
0 | 959 |
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960 enum { |
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961 // After previous pushes. |
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962 oop_to_verify = 6 * wordSize, |
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963 saved_rax = 7 * wordSize, |
1583 | 964 saved_r10 = 8 * wordSize, |
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965 |
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966 // Before the call to MacroAssembler::debug(), see below. |
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967 return_addr = 16 * wordSize, |
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968 error_msg = 17 * wordSize |
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969 }; |
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970 |
0 | 971 // get object |
304 | 972 __ movptr(rax, Address(rsp, oop_to_verify)); |
0 | 973 |
974 // make sure object is 'reasonable' | |
304 | 975 __ testptr(rax, rax); |
0 | 976 __ jcc(Assembler::zero, exit); // if obj is NULL it is OK |
977 // Check if the oop is in the right area of memory | |
304 | 978 __ movptr(c_rarg2, rax); |
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979 __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_mask()); |
304 | 980 __ andptr(c_rarg2, c_rarg3); |
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981 __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_bits()); |
304 | 982 __ cmpptr(c_rarg2, c_rarg3); |
0 | 983 __ jcc(Assembler::notZero, error); |
984 | |
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985 // set r12 to heapbase for load_klass() |
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986 __ reinit_heapbase(); |
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987 |
0 | 988 // make sure klass is 'reasonable' |
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989 __ load_klass(rax, rax); // get klass |
304 | 990 __ testptr(rax, rax); |
0 | 991 __ jcc(Assembler::zero, error); // if klass is NULL it is broken |
992 // Check if the klass is in the right area of memory | |
304 | 993 __ mov(c_rarg2, rax); |
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994 __ movptr(c_rarg3, (intptr_t) Universe::verify_klass_mask()); |
304 | 995 __ andptr(c_rarg2, c_rarg3); |
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996 __ movptr(c_rarg3, (intptr_t) Universe::verify_klass_bits()); |
304 | 997 __ cmpptr(c_rarg2, c_rarg3); |
0 | 998 __ jcc(Assembler::notZero, error); |
999 | |
1000 // make sure klass' klass is 'reasonable' | |
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1001 __ load_klass(rax, rax); |
304 | 1002 __ testptr(rax, rax); |
0 | 1003 __ jcc(Assembler::zero, error); // if klass' klass is NULL it is broken |
1004 // Check if the klass' klass is in the right area of memory | |
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1005 __ movptr(c_rarg3, (intptr_t) Universe::verify_klass_mask()); |
304 | 1006 __ andptr(rax, c_rarg3); |
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1007 __ movptr(c_rarg3, (intptr_t) Universe::verify_klass_bits()); |
304 | 1008 __ cmpptr(rax, c_rarg3); |
0 | 1009 __ jcc(Assembler::notZero, error); |
1010 | |
1011 // return if everything seems ok | |
1012 __ bind(exit); | |
304 | 1013 __ movptr(rax, Address(rsp, saved_rax)); // get saved rax back |
1583 | 1014 __ movptr(rscratch1, Address(rsp, saved_r10)); // get saved r10 back |
304 | 1015 __ pop(c_rarg3); // restore c_rarg3 |
1016 __ pop(c_rarg2); // restore c_rarg2 | |
1017 __ pop(r12); // restore r12 | |
1018 __ popf(); // restore flags | |
1583 | 1019 __ ret(4 * wordSize); // pop caller saved stuff |
0 | 1020 |
1021 // handle errors | |
1022 __ bind(error); | |
304 | 1023 __ movptr(rax, Address(rsp, saved_rax)); // get saved rax back |
1583 | 1024 __ movptr(rscratch1, Address(rsp, saved_r10)); // get saved r10 back |
304 | 1025 __ pop(c_rarg3); // get saved c_rarg3 back |
1026 __ pop(c_rarg2); // get saved c_rarg2 back | |
1027 __ pop(r12); // get saved r12 back | |
1028 __ popf(); // get saved flags off stack -- | |
0 | 1029 // will be ignored |
1030 | |
304 | 1031 __ pusha(); // push registers |
0 | 1032 // (rip is already |
1033 // already pushed) | |
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1034 // debug(char* msg, int64_t pc, int64_t regs[]) |
0 | 1035 // We've popped the registers we'd saved (c_rarg3, c_rarg2 and flags), and |
1036 // pushed all the registers, so now the stack looks like: | |
1037 // [tos + 0] 16 saved registers | |
1038 // [tos + 16] return address | |
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1039 // * [tos + 17] error message (char*) |
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1040 // * [tos + 18] object to verify (oop) |
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1041 // * [tos + 19] saved rax - saved by caller and bashed |
1583 | 1042 // * [tos + 20] saved r10 (rscratch1) - saved by caller |
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1043 // * = popped on exit |
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1044 |
304 | 1045 __ movptr(c_rarg0, Address(rsp, error_msg)); // pass address of error message |
1046 __ movptr(c_rarg1, Address(rsp, return_addr)); // pass return address | |
1047 __ movq(c_rarg2, rsp); // pass address of regs on stack | |
1048 __ mov(r12, rsp); // remember rsp | |
1049 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows | |
1050 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1051 BLOCK_COMMENT("call MacroAssembler::debug"); |
304 | 1052 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, MacroAssembler::debug64))); |
1053 __ mov(rsp, r12); // restore rsp | |
1054 __ popa(); // pop registers (includes r12) | |
1583 | 1055 __ ret(4 * wordSize); // pop caller saved stuff |
0 | 1056 |
1057 return start; | |
1058 } | |
1059 | |
1060 // | |
1061 // Verify that a register contains clean 32-bits positive value | |
1062 // (high 32-bits are 0) so it could be used in 64-bits shifts. | |
1063 // | |
1064 // Input: | |
1065 // Rint - 32-bits value | |
1066 // Rtmp - scratch | |
1067 // | |
1068 void assert_clean_int(Register Rint, Register Rtmp) { | |
1069 #ifdef ASSERT | |
1070 Label L; | |
1071 assert_different_registers(Rtmp, Rint); | |
1072 __ movslq(Rtmp, Rint); | |
1073 __ cmpq(Rtmp, Rint); | |
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1074 __ jcc(Assembler::equal, L); |
0 | 1075 __ stop("high 32-bits of int value are not 0"); |
1076 __ bind(L); | |
1077 #endif | |
1078 } | |
1079 | |
1080 // Generate overlap test for array copy stubs | |
1081 // | |
1082 // Input: | |
1083 // c_rarg0 - from | |
1084 // c_rarg1 - to | |
1085 // c_rarg2 - element count | |
1086 // | |
1087 // Output: | |
1088 // rax - &from[element count - 1] | |
1089 // | |
1090 void array_overlap_test(address no_overlap_target, Address::ScaleFactor sf) { | |
1091 assert(no_overlap_target != NULL, "must be generated"); | |
1092 array_overlap_test(no_overlap_target, NULL, sf); | |
1093 } | |
1094 void array_overlap_test(Label& L_no_overlap, Address::ScaleFactor sf) { | |
1095 array_overlap_test(NULL, &L_no_overlap, sf); | |
1096 } | |
1097 void array_overlap_test(address no_overlap_target, Label* NOLp, Address::ScaleFactor sf) { | |
1098 const Register from = c_rarg0; | |
1099 const Register to = c_rarg1; | |
1100 const Register count = c_rarg2; | |
1101 const Register end_from = rax; | |
1102 | |
304 | 1103 __ cmpptr(to, from); |
1104 __ lea(end_from, Address(from, count, sf, 0)); | |
0 | 1105 if (NOLp == NULL) { |
1106 ExternalAddress no_overlap(no_overlap_target); | |
1107 __ jump_cc(Assembler::belowEqual, no_overlap); | |
304 | 1108 __ cmpptr(to, end_from); |
0 | 1109 __ jump_cc(Assembler::aboveEqual, no_overlap); |
1110 } else { | |
1111 __ jcc(Assembler::belowEqual, (*NOLp)); | |
304 | 1112 __ cmpptr(to, end_from); |
0 | 1113 __ jcc(Assembler::aboveEqual, (*NOLp)); |
1114 } | |
1115 } | |
1116 | |
1117 // Shuffle first three arg regs on Windows into Linux/Solaris locations. | |
1118 // | |
1119 // Outputs: | |
1120 // rdi - rcx | |
1121 // rsi - rdx | |
1122 // rdx - r8 | |
1123 // rcx - r9 | |
1124 // | |
1125 // Registers r9 and r10 are used to save rdi and rsi on Windows, which latter | |
1126 // are non-volatile. r9 and r10 should not be used by the caller. | |
1127 // | |
1128 void setup_arg_regs(int nargs = 3) { | |
1129 const Register saved_rdi = r9; | |
1130 const Register saved_rsi = r10; | |
1131 assert(nargs == 3 || nargs == 4, "else fix"); | |
1132 #ifdef _WIN64 | |
1133 assert(c_rarg0 == rcx && c_rarg1 == rdx && c_rarg2 == r8 && c_rarg3 == r9, | |
1134 "unexpected argument registers"); | |
1135 if (nargs >= 4) | |
304 | 1136 __ mov(rax, r9); // r9 is also saved_rdi |
1137 __ movptr(saved_rdi, rdi); | |
1138 __ movptr(saved_rsi, rsi); | |
1139 __ mov(rdi, rcx); // c_rarg0 | |
1140 __ mov(rsi, rdx); // c_rarg1 | |
1141 __ mov(rdx, r8); // c_rarg2 | |
0 | 1142 if (nargs >= 4) |
304 | 1143 __ mov(rcx, rax); // c_rarg3 (via rax) |
0 | 1144 #else |
1145 assert(c_rarg0 == rdi && c_rarg1 == rsi && c_rarg2 == rdx && c_rarg3 == rcx, | |
1146 "unexpected argument registers"); | |
1147 #endif | |
1148 } | |
1149 | |
1150 void restore_arg_regs() { | |
1151 const Register saved_rdi = r9; | |
1152 const Register saved_rsi = r10; | |
1153 #ifdef _WIN64 | |
304 | 1154 __ movptr(rdi, saved_rdi); |
1155 __ movptr(rsi, saved_rsi); | |
0 | 1156 #endif |
1157 } | |
1158 | |
1159 // Generate code for an array write pre barrier | |
1160 // | |
1161 // addr - starting address | |
1162 // count - element count | |
1163 // | |
1164 // Destroy no registers! | |
1165 // | |
1166 void gen_write_ref_array_pre_barrier(Register addr, Register count) { | |
1167 BarrierSet* bs = Universe::heap()->barrier_set(); | |
1168 switch (bs->kind()) { | |
1169 case BarrierSet::G1SATBCT: | |
1170 case BarrierSet::G1SATBCTLogging: | |
1171 { | |
304 | 1172 __ pusha(); // push registers |
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1173 if (count == c_rarg0) { |
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1174 if (addr == c_rarg1) { |
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1175 // exactly backwards!! |
362 | 1176 __ xchgptr(c_rarg1, c_rarg0); |
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1177 } else { |
362 | 1178 __ movptr(c_rarg1, count); |
1179 __ movptr(c_rarg0, addr); | |
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1180 } |
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1181 |
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1182 } else { |
362 | 1183 __ movptr(c_rarg0, addr); |
1184 __ movptr(c_rarg1, count); | |
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1185 } |
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1186 __ call_VM_leaf(CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_pre), 2); |
304 | 1187 __ popa(); |
0 | 1188 } |
1189 break; | |
1190 case BarrierSet::CardTableModRef: | |
1191 case BarrierSet::CardTableExtension: | |
1192 case BarrierSet::ModRef: | |
1193 break; | |
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1194 default: |
0 | 1195 ShouldNotReachHere(); |
1196 | |
1197 } | |
1198 } | |
1199 | |
1200 // | |
1201 // Generate code for an array write post barrier | |
1202 // | |
1203 // Input: | |
1204 // start - register containing starting address of destination array | |
1205 // end - register containing ending address of destination array | |
1206 // scratch - scratch register | |
1207 // | |
1208 // The input registers are overwritten. | |
1209 // The ending address is inclusive. | |
1210 void gen_write_ref_array_post_barrier(Register start, Register end, Register scratch) { | |
1211 assert_different_registers(start, end, scratch); | |
1212 BarrierSet* bs = Universe::heap()->barrier_set(); | |
1213 switch (bs->kind()) { | |
1214 case BarrierSet::G1SATBCT: | |
1215 case BarrierSet::G1SATBCTLogging: | |
1216 | |
1217 { | |
304 | 1218 __ pusha(); // push registers (overkill) |
0 | 1219 // must compute element count unless barrier set interface is changed (other platforms supply count) |
1220 assert_different_registers(start, end, scratch); | |
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1221 __ lea(scratch, Address(end, BytesPerHeapOop)); |
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1222 __ subptr(scratch, start); // subtract start to get #bytes |
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1223 __ shrptr(scratch, LogBytesPerHeapOop); // convert to element count |
304 | 1224 __ mov(c_rarg0, start); |
1225 __ mov(c_rarg1, scratch); | |
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1226 __ call_VM_leaf(CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_post), 2); |
304 | 1227 __ popa(); |
0 | 1228 } |
1229 break; | |
1230 case BarrierSet::CardTableModRef: | |
1231 case BarrierSet::CardTableExtension: | |
1232 { | |
1233 CardTableModRefBS* ct = (CardTableModRefBS*)bs; | |
1234 assert(sizeof(*ct->byte_map_base) == sizeof(jbyte), "adjust this code"); | |
1235 | |
1236 Label L_loop; | |
1237 | |
304 | 1238 __ shrptr(start, CardTableModRefBS::card_shift); |
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1239 __ addptr(end, BytesPerHeapOop); |
304 | 1240 __ shrptr(end, CardTableModRefBS::card_shift); |
1241 __ subptr(end, start); // number of bytes to copy | |
0 | 1242 |
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1243 intptr_t disp = (intptr_t) ct->byte_map_base; |
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1244 if (__ is_simm32(disp)) { |
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1245 Address cardtable(noreg, noreg, Address::no_scale, disp); |
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1246 __ lea(scratch, cardtable); |
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1247 } else { |
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1248 ExternalAddress cardtable((address)disp); |
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1249 __ lea(scratch, cardtable); |
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1250 } |
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1251 |
0 | 1252 const Register count = end; // 'end' register contains bytes count now |
304 | 1253 __ addptr(start, scratch); |
0 | 1254 __ BIND(L_loop); |
1255 __ movb(Address(start, count, Address::times_1), 0); | |
304 | 1256 __ decrement(count); |
0 | 1257 __ jcc(Assembler::greaterEqual, L_loop); |
1258 } | |
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1259 break; |
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1260 default: |
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1261 ShouldNotReachHere(); |
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1262 |
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1263 } |
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1264 } |
0 | 1265 |
405 | 1266 |
0 | 1267 // Copy big chunks forward |
1268 // | |
1269 // Inputs: | |
1270 // end_from - source arrays end address | |
1271 // end_to - destination array end address | |
1272 // qword_count - 64-bits element count, negative | |
1273 // to - scratch | |
1274 // L_copy_32_bytes - entry label | |
1275 // L_copy_8_bytes - exit label | |
1276 // | |
1277 void copy_32_bytes_forward(Register end_from, Register end_to, | |
1278 Register qword_count, Register to, | |
1279 Label& L_copy_32_bytes, Label& L_copy_8_bytes) { | |
1280 DEBUG_ONLY(__ stop("enter at entry label, not here")); | |
1281 Label L_loop; | |
1365 | 1282 __ align(OptoLoopAlignment); |
0 | 1283 __ BIND(L_loop); |
405 | 1284 if(UseUnalignedLoadStores) { |
1285 __ movdqu(xmm0, Address(end_from, qword_count, Address::times_8, -24)); | |
1286 __ movdqu(Address(end_to, qword_count, Address::times_8, -24), xmm0); | |
1287 __ movdqu(xmm1, Address(end_from, qword_count, Address::times_8, - 8)); | |
1288 __ movdqu(Address(end_to, qword_count, Address::times_8, - 8), xmm1); | |
1289 | |
1290 } else { | |
1291 __ movq(to, Address(end_from, qword_count, Address::times_8, -24)); | |
1292 __ movq(Address(end_to, qword_count, Address::times_8, -24), to); | |
1293 __ movq(to, Address(end_from, qword_count, Address::times_8, -16)); | |
1294 __ movq(Address(end_to, qword_count, Address::times_8, -16), to); | |
1295 __ movq(to, Address(end_from, qword_count, Address::times_8, - 8)); | |
1296 __ movq(Address(end_to, qword_count, Address::times_8, - 8), to); | |
1297 __ movq(to, Address(end_from, qword_count, Address::times_8, - 0)); | |
1298 __ movq(Address(end_to, qword_count, Address::times_8, - 0), to); | |
1299 } | |
0 | 1300 __ BIND(L_copy_32_bytes); |
304 | 1301 __ addptr(qword_count, 4); |
0 | 1302 __ jcc(Assembler::lessEqual, L_loop); |
304 | 1303 __ subptr(qword_count, 4); |
0 | 1304 __ jcc(Assembler::less, L_copy_8_bytes); // Copy trailing qwords |
1305 } | |
1306 | |
1307 | |
1308 // Copy big chunks backward | |
1309 // | |
1310 // Inputs: | |
1311 // from - source arrays address | |
1312 // dest - destination array address | |
1313 // qword_count - 64-bits element count | |
1314 // to - scratch | |
1315 // L_copy_32_bytes - entry label | |
1316 // L_copy_8_bytes - exit label | |
1317 // | |
1318 void copy_32_bytes_backward(Register from, Register dest, | |
1319 Register qword_count, Register to, | |
1320 Label& L_copy_32_bytes, Label& L_copy_8_bytes) { | |
1321 DEBUG_ONLY(__ stop("enter at entry label, not here")); | |
1322 Label L_loop; | |
1365 | 1323 __ align(OptoLoopAlignment); |
0 | 1324 __ BIND(L_loop); |
405 | 1325 if(UseUnalignedLoadStores) { |
1326 __ movdqu(xmm0, Address(from, qword_count, Address::times_8, 16)); | |
1327 __ movdqu(Address(dest, qword_count, Address::times_8, 16), xmm0); | |
1328 __ movdqu(xmm1, Address(from, qword_count, Address::times_8, 0)); | |
1329 __ movdqu(Address(dest, qword_count, Address::times_8, 0), xmm1); | |
1330 | |
1331 } else { | |
1332 __ movq(to, Address(from, qword_count, Address::times_8, 24)); | |
1333 __ movq(Address(dest, qword_count, Address::times_8, 24), to); | |
1334 __ movq(to, Address(from, qword_count, Address::times_8, 16)); | |
1335 __ movq(Address(dest, qword_count, Address::times_8, 16), to); | |
1336 __ movq(to, Address(from, qword_count, Address::times_8, 8)); | |
1337 __ movq(Address(dest, qword_count, Address::times_8, 8), to); | |
1338 __ movq(to, Address(from, qword_count, Address::times_8, 0)); | |
1339 __ movq(Address(dest, qword_count, Address::times_8, 0), to); | |
1340 } | |
0 | 1341 __ BIND(L_copy_32_bytes); |
304 | 1342 __ subptr(qword_count, 4); |
0 | 1343 __ jcc(Assembler::greaterEqual, L_loop); |
304 | 1344 __ addptr(qword_count, 4); |
0 | 1345 __ jcc(Assembler::greater, L_copy_8_bytes); // Copy trailing qwords |
1346 } | |
1347 | |
1348 | |
1349 // Arguments: | |
1350 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1351 // ignored | |
1352 // name - stub name string | |
1353 // | |
1354 // Inputs: | |
1355 // c_rarg0 - source array address | |
1356 // c_rarg1 - destination array address | |
1357 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1358 // | |
1359 // If 'from' and/or 'to' are aligned on 4-, 2-, or 1-byte boundaries, | |
1360 // we let the hardware handle it. The one to eight bytes within words, | |
1361 // dwords or qwords that span cache line boundaries will still be loaded | |
1362 // and stored atomically. | |
1363 // | |
1364 // Side Effects: | |
1365 // disjoint_byte_copy_entry is set to the no-overlap entry point | |
1366 // used by generate_conjoint_byte_copy(). | |
1367 // | |
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1368 address generate_disjoint_byte_copy(bool aligned, address* entry, const char *name) { |
0 | 1369 __ align(CodeEntryAlignment); |
1370 StubCodeMark mark(this, "StubRoutines", name); | |
1371 address start = __ pc(); | |
1372 | |
1373 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes, L_copy_2_bytes; | |
1374 Label L_copy_byte, L_exit; | |
1375 const Register from = rdi; // source array address | |
1376 const Register to = rsi; // destination array address | |
1377 const Register count = rdx; // elements count | |
1378 const Register byte_count = rcx; | |
1379 const Register qword_count = count; | |
1380 const Register end_from = from; // source array end address | |
1381 const Register end_to = to; // destination array end address | |
1382 // End pointers are inclusive, and if count is not zero they point | |
1383 // to the last unit copied: end_to[0] := end_from[0] | |
1384 | |
1385 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1386 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1387 | |
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1388 if (entry != NULL) { |
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1389 *entry = __ pc(); |
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1390 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1391 BLOCK_COMMENT("Entry:"); |
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1392 } |
0 | 1393 |
1394 setup_arg_regs(); // from => rdi, to => rsi, count => rdx | |
1395 // r9 and r10 may be used to save non-volatile registers | |
1396 | |
1397 // 'from', 'to' and 'count' are now valid | |
304 | 1398 __ movptr(byte_count, count); |
1399 __ shrptr(count, 3); // count => qword_count | |
0 | 1400 |
1401 // Copy from low to high addresses. Use 'to' as scratch. | |
304 | 1402 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
1403 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
1404 __ negptr(qword_count); // make the count negative | |
0 | 1405 __ jmp(L_copy_32_bytes); |
1406 | |
1407 // Copy trailing qwords | |
1408 __ BIND(L_copy_8_bytes); | |
1409 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
1410 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
304 | 1411 __ increment(qword_count); |
0 | 1412 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1413 | |
1414 // Check for and copy trailing dword | |
1415 __ BIND(L_copy_4_bytes); | |
304 | 1416 __ testl(byte_count, 4); |
0 | 1417 __ jccb(Assembler::zero, L_copy_2_bytes); |
1418 __ movl(rax, Address(end_from, 8)); | |
1419 __ movl(Address(end_to, 8), rax); | |
1420 | |
304 | 1421 __ addptr(end_from, 4); |
1422 __ addptr(end_to, 4); | |
0 | 1423 |
1424 // Check for and copy trailing word | |
1425 __ BIND(L_copy_2_bytes); | |
304 | 1426 __ testl(byte_count, 2); |
0 | 1427 __ jccb(Assembler::zero, L_copy_byte); |
1428 __ movw(rax, Address(end_from, 8)); | |
1429 __ movw(Address(end_to, 8), rax); | |
1430 | |
304 | 1431 __ addptr(end_from, 2); |
1432 __ addptr(end_to, 2); | |
0 | 1433 |
1434 // Check for and copy trailing byte | |
1435 __ BIND(L_copy_byte); | |
304 | 1436 __ testl(byte_count, 1); |
0 | 1437 __ jccb(Assembler::zero, L_exit); |
1438 __ movb(rax, Address(end_from, 8)); | |
1439 __ movb(Address(end_to, 8), rax); | |
1440 | |
1441 __ BIND(L_exit); | |
1442 inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); | |
1443 restore_arg_regs(); | |
304 | 1444 __ xorptr(rax, rax); // return 0 |
0 | 1445 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1446 __ ret(0); | |
1447 | |
1448 // Copy in 32-bytes chunks | |
1449 copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
1450 __ jmp(L_copy_4_bytes); | |
1451 | |
1452 return start; | |
1453 } | |
1454 | |
1455 // Arguments: | |
1456 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1457 // ignored | |
1458 // name - stub name string | |
1459 // | |
1460 // Inputs: | |
1461 // c_rarg0 - source array address | |
1462 // c_rarg1 - destination array address | |
1463 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1464 // | |
1465 // If 'from' and/or 'to' are aligned on 4-, 2-, or 1-byte boundaries, | |
1466 // we let the hardware handle it. The one to eight bytes within words, | |
1467 // dwords or qwords that span cache line boundaries will still be loaded | |
1468 // and stored atomically. | |
1469 // | |
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1470 address generate_conjoint_byte_copy(bool aligned, address nooverlap_target, |
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1471 address* entry, const char *name) { |
0 | 1472 __ align(CodeEntryAlignment); |
1473 StubCodeMark mark(this, "StubRoutines", name); | |
1474 address start = __ pc(); | |
1475 | |
1476 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes, L_copy_2_bytes; | |
1477 const Register from = rdi; // source array address | |
1478 const Register to = rsi; // destination array address | |
1479 const Register count = rdx; // elements count | |
1480 const Register byte_count = rcx; | |
1481 const Register qword_count = count; | |
1482 | |
1483 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1484 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1485 | |
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1486 if (entry != NULL) { |
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1487 *entry = __ pc(); |
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1488 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1489 BLOCK_COMMENT("Entry:"); |
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1490 } |
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1491 |
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1492 array_overlap_test(nooverlap_target, Address::times_1); |
0 | 1493 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
1494 // r9 and r10 may be used to save non-volatile registers | |
1495 | |
1496 // 'from', 'to' and 'count' are now valid | |
304 | 1497 __ movptr(byte_count, count); |
1498 __ shrptr(count, 3); // count => qword_count | |
0 | 1499 |
1500 // Copy from high to low addresses. | |
1501 | |
1502 // Check for and copy trailing byte | |
304 | 1503 __ testl(byte_count, 1); |
0 | 1504 __ jcc(Assembler::zero, L_copy_2_bytes); |
1505 __ movb(rax, Address(from, byte_count, Address::times_1, -1)); | |
1506 __ movb(Address(to, byte_count, Address::times_1, -1), rax); | |
304 | 1507 __ decrement(byte_count); // Adjust for possible trailing word |
0 | 1508 |
1509 // Check for and copy trailing word | |
1510 __ BIND(L_copy_2_bytes); | |
304 | 1511 __ testl(byte_count, 2); |
0 | 1512 __ jcc(Assembler::zero, L_copy_4_bytes); |
1513 __ movw(rax, Address(from, byte_count, Address::times_1, -2)); | |
1514 __ movw(Address(to, byte_count, Address::times_1, -2), rax); | |
1515 | |
1516 // Check for and copy trailing dword | |
1517 __ BIND(L_copy_4_bytes); | |
304 | 1518 __ testl(byte_count, 4); |
0 | 1519 __ jcc(Assembler::zero, L_copy_32_bytes); |
1520 __ movl(rax, Address(from, qword_count, Address::times_8)); | |
1521 __ movl(Address(to, qword_count, Address::times_8), rax); | |
1522 __ jmp(L_copy_32_bytes); | |
1523 | |
1524 // Copy trailing qwords | |
1525 __ BIND(L_copy_8_bytes); | |
1526 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
1527 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
304 | 1528 __ decrement(qword_count); |
0 | 1529 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1530 | |
1531 inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); | |
1532 restore_arg_regs(); | |
304 | 1533 __ xorptr(rax, rax); // return 0 |
0 | 1534 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1535 __ ret(0); | |
1536 | |
1537 // Copy in 32-bytes chunks | |
1538 copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
1539 | |
1540 inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); | |
1541 restore_arg_regs(); | |
304 | 1542 __ xorptr(rax, rax); // return 0 |
0 | 1543 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1544 __ ret(0); | |
1545 | |
1546 return start; | |
1547 } | |
1548 | |
1549 // Arguments: | |
1550 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1551 // ignored | |
1552 // name - stub name string | |
1553 // | |
1554 // Inputs: | |
1555 // c_rarg0 - source array address | |
1556 // c_rarg1 - destination array address | |
1557 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1558 // | |
1559 // If 'from' and/or 'to' are aligned on 4- or 2-byte boundaries, we | |
1560 // let the hardware handle it. The two or four words within dwords | |
1561 // or qwords that span cache line boundaries will still be loaded | |
1562 // and stored atomically. | |
1563 // | |
1564 // Side Effects: | |
1565 // disjoint_short_copy_entry is set to the no-overlap entry point | |
1566 // used by generate_conjoint_short_copy(). | |
1567 // | |
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1568 address generate_disjoint_short_copy(bool aligned, address *entry, const char *name) { |
0 | 1569 __ align(CodeEntryAlignment); |
1570 StubCodeMark mark(this, "StubRoutines", name); | |
1571 address start = __ pc(); | |
1572 | |
1573 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes,L_copy_2_bytes,L_exit; | |
1574 const Register from = rdi; // source array address | |
1575 const Register to = rsi; // destination array address | |
1576 const Register count = rdx; // elements count | |
1577 const Register word_count = rcx; | |
1578 const Register qword_count = count; | |
1579 const Register end_from = from; // source array end address | |
1580 const Register end_to = to; // destination array end address | |
1581 // End pointers are inclusive, and if count is not zero they point | |
1582 // to the last unit copied: end_to[0] := end_from[0] | |
1583 | |
1584 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1585 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1586 | |
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1587 if (entry != NULL) { |
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1588 *entry = __ pc(); |
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1589 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1590 BLOCK_COMMENT("Entry:"); |
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1591 } |
0 | 1592 |
1593 setup_arg_regs(); // from => rdi, to => rsi, count => rdx | |
1594 // r9 and r10 may be used to save non-volatile registers | |
1595 | |
1596 // 'from', 'to' and 'count' are now valid | |
304 | 1597 __ movptr(word_count, count); |
1598 __ shrptr(count, 2); // count => qword_count | |
0 | 1599 |
1600 // Copy from low to high addresses. Use 'to' as scratch. | |
304 | 1601 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
1602 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
1603 __ negptr(qword_count); | |
0 | 1604 __ jmp(L_copy_32_bytes); |
1605 | |
1606 // Copy trailing qwords | |
1607 __ BIND(L_copy_8_bytes); | |
1608 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
1609 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
304 | 1610 __ increment(qword_count); |
0 | 1611 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1612 | |
1613 // Original 'dest' is trashed, so we can't use it as a | |
1614 // base register for a possible trailing word copy | |
1615 | |
1616 // Check for and copy trailing dword | |
1617 __ BIND(L_copy_4_bytes); | |
304 | 1618 __ testl(word_count, 2); |
0 | 1619 __ jccb(Assembler::zero, L_copy_2_bytes); |
1620 __ movl(rax, Address(end_from, 8)); | |
1621 __ movl(Address(end_to, 8), rax); | |
1622 | |
304 | 1623 __ addptr(end_from, 4); |
1624 __ addptr(end_to, 4); | |
0 | 1625 |
1626 // Check for and copy trailing word | |
1627 __ BIND(L_copy_2_bytes); | |
304 | 1628 __ testl(word_count, 1); |
0 | 1629 __ jccb(Assembler::zero, L_exit); |
1630 __ movw(rax, Address(end_from, 8)); | |
1631 __ movw(Address(end_to, 8), rax); | |
1632 | |
1633 __ BIND(L_exit); | |
1634 inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); | |
1635 restore_arg_regs(); | |
304 | 1636 __ xorptr(rax, rax); // return 0 |
0 | 1637 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1638 __ ret(0); | |
1639 | |
1640 // Copy in 32-bytes chunks | |
1641 copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
1642 __ jmp(L_copy_4_bytes); | |
1643 | |
1644 return start; | |
1645 } | |
1646 | |
1763 | 1647 address generate_fill(BasicType t, bool aligned, const char *name) { |
1648 __ align(CodeEntryAlignment); | |
1649 StubCodeMark mark(this, "StubRoutines", name); | |
1650 address start = __ pc(); | |
1651 | |
1652 BLOCK_COMMENT("Entry:"); | |
1653 | |
1654 const Register to = c_rarg0; // source array address | |
1655 const Register value = c_rarg1; // value | |
1656 const Register count = c_rarg2; // elements count | |
1657 | |
1658 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1659 | |
1660 __ generate_fill(t, aligned, to, value, count, rax, xmm0); | |
1661 | |
1662 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
1663 __ ret(0); | |
1664 return start; | |
1665 } | |
1666 | |
0 | 1667 // Arguments: |
1668 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1669 // ignored | |
1670 // name - stub name string | |
1671 // | |
1672 // Inputs: | |
1673 // c_rarg0 - source array address | |
1674 // c_rarg1 - destination array address | |
1675 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1676 // | |
1677 // If 'from' and/or 'to' are aligned on 4- or 2-byte boundaries, we | |
1678 // let the hardware handle it. The two or four words within dwords | |
1679 // or qwords that span cache line boundaries will still be loaded | |
1680 // and stored atomically. | |
1681 // | |
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1682 address generate_conjoint_short_copy(bool aligned, address nooverlap_target, |
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1683 address *entry, const char *name) { |
0 | 1684 __ align(CodeEntryAlignment); |
1685 StubCodeMark mark(this, "StubRoutines", name); | |
1686 address start = __ pc(); | |
1687 | |
1688 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes; | |
1689 const Register from = rdi; // source array address | |
1690 const Register to = rsi; // destination array address | |
1691 const Register count = rdx; // elements count | |
1692 const Register word_count = rcx; | |
1693 const Register qword_count = count; | |
1694 | |
1695 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1696 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1697 | |
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1698 if (entry != NULL) { |
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1699 *entry = __ pc(); |
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1700 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1701 BLOCK_COMMENT("Entry:"); |
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1702 } |
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1703 |
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1704 array_overlap_test(nooverlap_target, Address::times_2); |
0 | 1705 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
1706 // r9 and r10 may be used to save non-volatile registers | |
1707 | |
1708 // 'from', 'to' and 'count' are now valid | |
304 | 1709 __ movptr(word_count, count); |
1710 __ shrptr(count, 2); // count => qword_count | |
0 | 1711 |
1712 // Copy from high to low addresses. Use 'to' as scratch. | |
1713 | |
1714 // Check for and copy trailing word | |
304 | 1715 __ testl(word_count, 1); |
0 | 1716 __ jccb(Assembler::zero, L_copy_4_bytes); |
1717 __ movw(rax, Address(from, word_count, Address::times_2, -2)); | |
1718 __ movw(Address(to, word_count, Address::times_2, -2), rax); | |
1719 | |
1720 // Check for and copy trailing dword | |
1721 __ BIND(L_copy_4_bytes); | |
304 | 1722 __ testl(word_count, 2); |
0 | 1723 __ jcc(Assembler::zero, L_copy_32_bytes); |
1724 __ movl(rax, Address(from, qword_count, Address::times_8)); | |
1725 __ movl(Address(to, qword_count, Address::times_8), rax); | |
1726 __ jmp(L_copy_32_bytes); | |
1727 | |
1728 // Copy trailing qwords | |
1729 __ BIND(L_copy_8_bytes); | |
1730 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
1731 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
304 | 1732 __ decrement(qword_count); |
0 | 1733 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1734 | |
1735 inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); | |
1736 restore_arg_regs(); | |
304 | 1737 __ xorptr(rax, rax); // return 0 |
0 | 1738 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1739 __ ret(0); | |
1740 | |
1741 // Copy in 32-bytes chunks | |
1742 copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
1743 | |
1744 inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); | |
1745 restore_arg_regs(); | |
304 | 1746 __ xorptr(rax, rax); // return 0 |
0 | 1747 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1748 __ ret(0); | |
1749 | |
1750 return start; | |
1751 } | |
1752 | |
1753 // Arguments: | |
1754 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1755 // ignored | |
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1756 // is_oop - true => oop array, so generate store check code |
0 | 1757 // name - stub name string |
1758 // | |
1759 // Inputs: | |
1760 // c_rarg0 - source array address | |
1761 // c_rarg1 - destination array address | |
1762 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1763 // | |
1764 // If 'from' and/or 'to' are aligned on 4-byte boundaries, we let | |
1765 // the hardware handle it. The two dwords within qwords that span | |
1766 // cache line boundaries will still be loaded and stored atomicly. | |
1767 // | |
1768 // Side Effects: | |
1769 // disjoint_int_copy_entry is set to the no-overlap entry point | |
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1770 // used by generate_conjoint_int_oop_copy(). |
0 | 1771 // |
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1772 address generate_disjoint_int_oop_copy(bool aligned, bool is_oop, address* entry, const char *name) { |
0 | 1773 __ align(CodeEntryAlignment); |
1774 StubCodeMark mark(this, "StubRoutines", name); | |
1775 address start = __ pc(); | |
1776 | |
1777 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes, L_exit; | |
1778 const Register from = rdi; // source array address | |
1779 const Register to = rsi; // destination array address | |
1780 const Register count = rdx; // elements count | |
1781 const Register dword_count = rcx; | |
1782 const Register qword_count = count; | |
1783 const Register end_from = from; // source array end address | |
1784 const Register end_to = to; // destination array end address | |
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1785 const Register saved_to = r11; // saved destination array address |
0 | 1786 // End pointers are inclusive, and if count is not zero they point |
1787 // to the last unit copied: end_to[0] := end_from[0] | |
1788 | |
1789 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1790 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1791 | |
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1792 if (entry != NULL) { |
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1793 *entry = __ pc(); |
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1794 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1795 BLOCK_COMMENT("Entry:"); |
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1796 } |
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1797 |
0 | 1798 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
1799 // r9 and r10 may be used to save non-volatile registers | |
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1800 if (is_oop) { |
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1801 __ movq(saved_to, to); |
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1802 gen_write_ref_array_pre_barrier(to, count); |
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1803 } |
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1804 |
0 | 1805 // 'from', 'to' and 'count' are now valid |
304 | 1806 __ movptr(dword_count, count); |
1807 __ shrptr(count, 1); // count => qword_count | |
0 | 1808 |
1809 // Copy from low to high addresses. Use 'to' as scratch. | |
304 | 1810 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
1811 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
1812 __ negptr(qword_count); | |
0 | 1813 __ jmp(L_copy_32_bytes); |
1814 | |
1815 // Copy trailing qwords | |
1816 __ BIND(L_copy_8_bytes); | |
1817 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
1818 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
304 | 1819 __ increment(qword_count); |
0 | 1820 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1821 | |
1822 // Check for and copy trailing dword | |
1823 __ BIND(L_copy_4_bytes); | |
304 | 1824 __ testl(dword_count, 1); // Only byte test since the value is 0 or 1 |
0 | 1825 __ jccb(Assembler::zero, L_exit); |
1826 __ movl(rax, Address(end_from, 8)); | |
1827 __ movl(Address(end_to, 8), rax); | |
1828 | |
1829 __ BIND(L_exit); | |
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1830 if (is_oop) { |
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1831 __ leaq(end_to, Address(saved_to, dword_count, Address::times_4, -4)); |
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1832 gen_write_ref_array_post_barrier(saved_to, end_to, rax); |
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1833 } |
0 | 1834 inc_counter_np(SharedRuntime::_jint_array_copy_ctr); |
1835 restore_arg_regs(); | |
304 | 1836 __ xorptr(rax, rax); // return 0 |
0 | 1837 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1838 __ ret(0); | |
1839 | |
1840 // Copy 32-bytes chunks | |
1841 copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
1842 __ jmp(L_copy_4_bytes); | |
1843 | |
1844 return start; | |
1845 } | |
1846 | |
1847 // Arguments: | |
1848 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1849 // ignored | |
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1850 // is_oop - true => oop array, so generate store check code |
0 | 1851 // name - stub name string |
1852 // | |
1853 // Inputs: | |
1854 // c_rarg0 - source array address | |
1855 // c_rarg1 - destination array address | |
1856 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1857 // | |
1858 // If 'from' and/or 'to' are aligned on 4-byte boundaries, we let | |
1859 // the hardware handle it. The two dwords within qwords that span | |
1860 // cache line boundaries will still be loaded and stored atomicly. | |
1861 // | |
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1862 address generate_conjoint_int_oop_copy(bool aligned, bool is_oop, address nooverlap_target, |
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1863 address *entry, const char *name) { |
0 | 1864 __ align(CodeEntryAlignment); |
1865 StubCodeMark mark(this, "StubRoutines", name); | |
1866 address start = __ pc(); | |
1867 | |
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1868 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_2_bytes, L_exit; |
0 | 1869 const Register from = rdi; // source array address |
1870 const Register to = rsi; // destination array address | |
1871 const Register count = rdx; // elements count | |
1872 const Register dword_count = rcx; | |
1873 const Register qword_count = count; | |
1874 | |
1875 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1876 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1877 | |
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1878 if (entry != NULL) { |
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1879 *entry = __ pc(); |
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1880 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1881 BLOCK_COMMENT("Entry:"); |
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1882 } |
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1883 |
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1884 array_overlap_test(nooverlap_target, Address::times_4); |
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1885 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
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1886 // r9 and r10 may be used to save non-volatile registers |
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1887 |
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1888 if (is_oop) { |
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1889 // no registers are destroyed by this call |
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1890 gen_write_ref_array_pre_barrier(to, count); |
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1891 } |
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1892 |
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1893 assert_clean_int(count, rax); // Make sure 'count' is clean int. |
0 | 1894 // 'from', 'to' and 'count' are now valid |
304 | 1895 __ movptr(dword_count, count); |
1896 __ shrptr(count, 1); // count => qword_count | |
0 | 1897 |
1898 // Copy from high to low addresses. Use 'to' as scratch. | |
1899 | |
1900 // Check for and copy trailing dword | |
304 | 1901 __ testl(dword_count, 1); |
0 | 1902 __ jcc(Assembler::zero, L_copy_32_bytes); |
1903 __ movl(rax, Address(from, dword_count, Address::times_4, -4)); | |
1904 __ movl(Address(to, dword_count, Address::times_4, -4), rax); | |
1905 __ jmp(L_copy_32_bytes); | |
1906 | |
1907 // Copy trailing qwords | |
1908 __ BIND(L_copy_8_bytes); | |
1909 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
1910 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
304 | 1911 __ decrement(qword_count); |
0 | 1912 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1913 | |
1914 inc_counter_np(SharedRuntime::_jint_array_copy_ctr); | |
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1915 if (is_oop) { |
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1916 __ jmp(L_exit); |
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1917 } |
0 | 1918 restore_arg_regs(); |
304 | 1919 __ xorptr(rax, rax); // return 0 |
0 | 1920 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1921 __ ret(0); | |
1922 | |
1923 // Copy in 32-bytes chunks | |
1924 copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
1925 | |
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1926 inc_counter_np(SharedRuntime::_jint_array_copy_ctr); |
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1927 __ bind(L_exit); |
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1928 if (is_oop) { |
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1929 Register end_to = rdx; |
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1930 __ leaq(end_to, Address(to, dword_count, Address::times_4, -4)); |
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1931 gen_write_ref_array_post_barrier(to, end_to, rax); |
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1932 } |
0 | 1933 restore_arg_regs(); |
304 | 1934 __ xorptr(rax, rax); // return 0 |
0 | 1935 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1936 __ ret(0); | |
1937 | |
1938 return start; | |
1939 } | |
1940 | |
1941 // Arguments: | |
1942 // aligned - true => Input and output aligned on a HeapWord boundary == 8 bytes | |
1943 // ignored | |
1944 // is_oop - true => oop array, so generate store check code | |
1945 // name - stub name string | |
1946 // | |
1947 // Inputs: | |
1948 // c_rarg0 - source array address | |
1949 // c_rarg1 - destination array address | |
1950 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1951 // | |
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1952 // Side Effects: |
0 | 1953 // disjoint_oop_copy_entry or disjoint_long_copy_entry is set to the |
1954 // no-overlap entry point used by generate_conjoint_long_oop_copy(). | |
1955 // | |
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1956 address generate_disjoint_long_oop_copy(bool aligned, bool is_oop, address *entry, const char *name) { |
0 | 1957 __ align(CodeEntryAlignment); |
1958 StubCodeMark mark(this, "StubRoutines", name); | |
1959 address start = __ pc(); | |
1960 | |
1961 Label L_copy_32_bytes, L_copy_8_bytes, L_exit; | |
1962 const Register from = rdi; // source array address | |
1963 const Register to = rsi; // destination array address | |
1964 const Register qword_count = rdx; // elements count | |
1965 const Register end_from = from; // source array end address | |
1966 const Register end_to = rcx; // destination array end address | |
1967 const Register saved_to = to; | |
1968 // End pointers are inclusive, and if count is not zero they point | |
1969 // to the last unit copied: end_to[0] := end_from[0] | |
1970 | |
1971 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1972 // Save no-overlap entry point for generate_conjoint_long_oop_copy() | |
1973 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1974 | |
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1975 if (entry != NULL) { |
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1976 *entry = __ pc(); |
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1977 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1978 BLOCK_COMMENT("Entry:"); |
0 | 1979 } |
1980 | |
1981 setup_arg_regs(); // from => rdi, to => rsi, count => rdx | |
1982 // r9 and r10 may be used to save non-volatile registers | |
1983 // 'from', 'to' and 'qword_count' are now valid | |
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1984 if (is_oop) { |
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1985 // no registers are destroyed by this call |
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1986 gen_write_ref_array_pre_barrier(to, qword_count); |
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1987 } |
0 | 1988 |
1989 // Copy from low to high addresses. Use 'to' as scratch. | |
304 | 1990 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
1991 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
1992 __ negptr(qword_count); | |
0 | 1993 __ jmp(L_copy_32_bytes); |
1994 | |
1995 // Copy trailing qwords | |
1996 __ BIND(L_copy_8_bytes); | |
1997 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
1998 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
304 | 1999 __ increment(qword_count); |
0 | 2000 __ jcc(Assembler::notZero, L_copy_8_bytes); |
2001 | |
2002 if (is_oop) { | |
2003 __ jmp(L_exit); | |
2004 } else { | |
2005 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); | |
2006 restore_arg_regs(); | |
304 | 2007 __ xorptr(rax, rax); // return 0 |
0 | 2008 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2009 __ ret(0); | |
2010 } | |
2011 | |
2012 // Copy 64-byte chunks | |
2013 copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
2014 | |
2015 if (is_oop) { | |
2016 __ BIND(L_exit); | |
2017 gen_write_ref_array_post_barrier(saved_to, end_to, rax); | |
2018 inc_counter_np(SharedRuntime::_oop_array_copy_ctr); | |
2019 } else { | |
2020 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); | |
2021 } | |
2022 restore_arg_regs(); | |
304 | 2023 __ xorptr(rax, rax); // return 0 |
0 | 2024 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2025 __ ret(0); | |
2026 | |
2027 return start; | |
2028 } | |
2029 | |
2030 // Arguments: | |
2031 // aligned - true => Input and output aligned on a HeapWord boundary == 8 bytes | |
2032 // ignored | |
2033 // is_oop - true => oop array, so generate store check code | |
2034 // name - stub name string | |
2035 // | |
2036 // Inputs: | |
2037 // c_rarg0 - source array address | |
2038 // c_rarg1 - destination array address | |
2039 // c_rarg2 - element count, treated as ssize_t, can be zero | |
2040 // | |
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2041 address generate_conjoint_long_oop_copy(bool aligned, bool is_oop, address nooverlap_target, |
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2042 address *entry, const char *name) { |
0 | 2043 __ align(CodeEntryAlignment); |
2044 StubCodeMark mark(this, "StubRoutines", name); | |
2045 address start = __ pc(); | |
2046 | |
2047 Label L_copy_32_bytes, L_copy_8_bytes, L_exit; | |
2048 const Register from = rdi; // source array address | |
2049 const Register to = rsi; // destination array address | |
2050 const Register qword_count = rdx; // elements count | |
2051 const Register saved_count = rcx; | |
2052 | |
2053 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2054 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
2055 | |
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2056 if (entry != NULL) { |
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2057 *entry = __ pc(); |
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2058 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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2059 BLOCK_COMMENT("Entry:"); |
0 | 2060 } |
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2061 |
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2062 array_overlap_test(nooverlap_target, Address::times_8); |
0 | 2063 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
2064 // r9 and r10 may be used to save non-volatile registers | |
2065 // 'from', 'to' and 'qword_count' are now valid | |
2066 if (is_oop) { | |
2067 // Save to and count for store barrier | |
304 | 2068 __ movptr(saved_count, qword_count); |
0 | 2069 // No registers are destroyed by this call |
2070 gen_write_ref_array_pre_barrier(to, saved_count); | |
2071 } | |
2072 | |
2073 __ jmp(L_copy_32_bytes); | |
2074 | |
2075 // Copy trailing qwords | |
2076 __ BIND(L_copy_8_bytes); | |
2077 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
2078 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
304 | 2079 __ decrement(qword_count); |
0 | 2080 __ jcc(Assembler::notZero, L_copy_8_bytes); |
2081 | |
2082 if (is_oop) { | |
2083 __ jmp(L_exit); | |
2084 } else { | |
2085 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); | |
2086 restore_arg_regs(); | |
304 | 2087 __ xorptr(rax, rax); // return 0 |
0 | 2088 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2089 __ ret(0); | |
2090 } | |
2091 | |
2092 // Copy in 32-bytes chunks | |
2093 copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
2094 | |
2095 if (is_oop) { | |
2096 __ BIND(L_exit); | |
304 | 2097 __ lea(rcx, Address(to, saved_count, Address::times_8, -8)); |
0 | 2098 gen_write_ref_array_post_barrier(to, rcx, rax); |
2099 inc_counter_np(SharedRuntime::_oop_array_copy_ctr); | |
2100 } else { | |
2101 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); | |
2102 } | |
2103 restore_arg_regs(); | |
304 | 2104 __ xorptr(rax, rax); // return 0 |
0 | 2105 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2106 __ ret(0); | |
2107 | |
2108 return start; | |
2109 } | |
2110 | |
2111 | |
2112 // Helper for generating a dynamic type check. | |
2113 // Smashes no registers. | |
2114 void generate_type_check(Register sub_klass, | |
2115 Register super_check_offset, | |
2116 Register super_klass, | |
2117 Label& L_success) { | |
2118 assert_different_registers(sub_klass, super_check_offset, super_klass); | |
2119 | |
2120 BLOCK_COMMENT("type_check:"); | |
2121 | |
2122 Label L_miss; | |
2123 | |
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2124 __ check_klass_subtype_fast_path(sub_klass, super_klass, noreg, &L_success, &L_miss, NULL, |
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2125 super_check_offset); |
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2126 __ check_klass_subtype_slow_path(sub_klass, super_klass, noreg, noreg, &L_success, NULL); |
0 | 2127 |
2128 // Fall through on failure! | |
2129 __ BIND(L_miss); | |
2130 } | |
2131 | |
2132 // | |
2133 // Generate checkcasting array copy stub | |
2134 // | |
2135 // Input: | |
2136 // c_rarg0 - source array address | |
2137 // c_rarg1 - destination array address | |
2138 // c_rarg2 - element count, treated as ssize_t, can be zero | |
2139 // c_rarg3 - size_t ckoff (super_check_offset) | |
2140 // not Win64 | |
2141 // c_rarg4 - oop ckval (super_klass) | |
2142 // Win64 | |
2143 // rsp+40 - oop ckval (super_klass) | |
2144 // | |
2145 // Output: | |
2146 // rax == 0 - success | |
2147 // rax == -1^K - failure, where K is partial transfer count | |
2148 // | |
2313
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2149 address generate_checkcast_copy(const char *name, address *entry) { |
0 | 2150 |
2151 Label L_load_element, L_store_element, L_do_card_marks, L_done; | |
2152 | |
2153 // Input registers (after setup_arg_regs) | |
2154 const Register from = rdi; // source array address | |
2155 const Register to = rsi; // destination array address | |
2156 const Register length = rdx; // elements count | |
2157 const Register ckoff = rcx; // super_check_offset | |
2158 const Register ckval = r8; // super_klass | |
2159 | |
2160 // Registers used as temps (r13, r14 are save-on-entry) | |
2161 const Register end_from = from; // source array end address | |
2162 const Register end_to = r13; // destination array end address | |
2163 const Register count = rdx; // -(count_remaining) | |
2164 const Register r14_length = r14; // saved copy of length | |
2165 // End pointers are inclusive, and if length is not zero they point | |
2166 // to the last unit copied: end_to[0] := end_from[0] | |
2167 | |
2168 const Register rax_oop = rax; // actual oop copied | |
2169 const Register r11_klass = r11; // oop._klass | |
2170 | |
2171 //--------------------------------------------------------------- | |
2172 // Assembler stub will be used for this call to arraycopy | |
2173 // if the two arrays are subtypes of Object[] but the | |
2174 // destination array type is not equal to or a supertype | |
2175 // of the source type. Each element must be separately | |
2176 // checked. | |
2177 | |
2178 __ align(CodeEntryAlignment); | |
2179 StubCodeMark mark(this, "StubRoutines", name); | |
2180 address start = __ pc(); | |
2181 | |
2182 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2183 | |
2184 #ifdef ASSERT | |
2185 // caller guarantees that the arrays really are different | |
2186 // otherwise, we would have to make conjoint checks | |
2187 { Label L; | |
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2188 array_overlap_test(L, TIMES_OOP); |
0 | 2189 __ stop("checkcast_copy within a single array"); |
2190 __ bind(L); | |
2191 } | |
2192 #endif //ASSERT | |
2193 | |
2194 setup_arg_regs(4); // from => rdi, to => rsi, length => rdx | |
2195 // ckoff => rcx, ckval => r8 | |
2196 // r9 and r10 may be used to save non-volatile registers | |
2197 #ifdef _WIN64 | |
2198 // last argument (#4) is on stack on Win64 | |
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2199 __ movptr(ckval, Address(rsp, 6 * wordSize)); |
0 | 2200 #endif |
2201 | |
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2202 // Caller of this entry point must set up the argument registers. |
2313
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2203 if (entry != NULL) { |
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2204 *entry = __ pc(); |
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2205 BLOCK_COMMENT("Entry:"); |
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2206 } |
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2207 |
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2208 // allocate spill slots for r13, r14 |
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2209 enum { |
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2210 saved_r13_offset, |
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2211 saved_r14_offset, |
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2212 saved_rbp_offset |
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2213 }; |
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2214 __ subptr(rsp, saved_rbp_offset * wordSize); |
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2215 __ movptr(Address(rsp, saved_r13_offset * wordSize), r13); |
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2216 __ movptr(Address(rsp, saved_r14_offset * wordSize), r14); |
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2217 |
0 | 2218 // check that int operands are properly extended to size_t |
2219 assert_clean_int(length, rax); | |
2220 assert_clean_int(ckoff, rax); | |
2221 | |
2222 #ifdef ASSERT | |
2223 BLOCK_COMMENT("assert consistent ckoff/ckval"); | |
2224 // The ckoff and ckval must be mutually consistent, | |
2225 // even though caller generates both. | |
2226 { Label L; | |
2227 int sco_offset = (klassOopDesc::header_size() * HeapWordSize + | |
2228 Klass::super_check_offset_offset_in_bytes()); | |
2229 __ cmpl(ckoff, Address(ckval, sco_offset)); | |
2230 __ jcc(Assembler::equal, L); | |
2231 __ stop("super_check_offset inconsistent"); | |
2232 __ bind(L); | |
2233 } | |
2234 #endif //ASSERT | |
2235 | |
2236 // Loop-invariant addresses. They are exclusive end pointers. | |
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2237 Address end_from_addr(from, length, TIMES_OOP, 0); |
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2238 Address end_to_addr(to, length, TIMES_OOP, 0); |
0 | 2239 // Loop-variant addresses. They assume post-incremented count < 0. |
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2240 Address from_element_addr(end_from, count, TIMES_OOP, 0); |
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2241 Address to_element_addr(end_to, count, TIMES_OOP, 0); |
0 | 2242 |
2243 gen_write_ref_array_pre_barrier(to, count); | |
2244 | |
2245 // Copy from low to high addresses, indexed from the end of each array. | |
304 | 2246 __ lea(end_from, end_from_addr); |
2247 __ lea(end_to, end_to_addr); | |
2248 __ movptr(r14_length, length); // save a copy of the length | |
2249 assert(length == count, ""); // else fix next line: | |
2250 __ negptr(count); // negate and test the length | |
0 | 2251 __ jcc(Assembler::notZero, L_load_element); |
2252 | |
2253 // Empty array: Nothing to do. | |
304 | 2254 __ xorptr(rax, rax); // return 0 on (trivial) success |
0 | 2255 __ jmp(L_done); |
2256 | |
2257 // ======== begin loop ======== | |
2258 // (Loop is rotated; its entry is L_load_element.) | |
2259 // Loop control: | |
2260 // for (count = -count; count != 0; count++) | |
2261 // Base pointers src, dst are biased by 8*(count-1),to last element. | |
1365 | 2262 __ align(OptoLoopAlignment); |
0 | 2263 |
2264 __ BIND(L_store_element); | |
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2265 __ store_heap_oop(to_element_addr, rax_oop); // store the oop |
304 | 2266 __ increment(count); // increment the count toward zero |
0 | 2267 __ jcc(Assembler::zero, L_do_card_marks); |
2268 | |
2269 // ======== loop entry is here ======== | |
2270 __ BIND(L_load_element); | |
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2271 __ load_heap_oop(rax_oop, from_element_addr); // load the oop |
304 | 2272 __ testptr(rax_oop, rax_oop); |
0 | 2273 __ jcc(Assembler::zero, L_store_element); |
2274 | |
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2275 __ load_klass(r11_klass, rax_oop);// query the object klass |
0 | 2276 generate_type_check(r11_klass, ckoff, ckval, L_store_element); |
2277 // ======== end loop ======== | |
2278 | |
2279 // It was a real error; we must depend on the caller to finish the job. | |
2280 // Register rdx = -1 * number of *remaining* oops, r14 = *total* oops. | |
2281 // Emit GC store barriers for the oops we have copied (r14 + rdx), | |
2282 // and report their number to the caller. | |
2283 assert_different_registers(rax, r14_length, count, to, end_to, rcx); | |
304 | 2284 __ lea(end_to, to_element_addr); |
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2285 __ addptr(end_to, -heapOopSize); // make an inclusive end pointer |
362 | 2286 gen_write_ref_array_post_barrier(to, end_to, rscratch1); |
304 | 2287 __ movptr(rax, r14_length); // original oops |
2288 __ addptr(rax, count); // K = (original - remaining) oops | |
2289 __ notptr(rax); // report (-1^K) to caller | |
0 | 2290 __ jmp(L_done); |
2291 | |
2292 // Come here on success only. | |
2293 __ BIND(L_do_card_marks); | |
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2294 __ addptr(end_to, -heapOopSize); // make an inclusive end pointer |
362 | 2295 gen_write_ref_array_post_barrier(to, end_to, rscratch1); |
304 | 2296 __ xorptr(rax, rax); // return 0 on success |
0 | 2297 |
2298 // Common exit point (success or failure). | |
2299 __ BIND(L_done); | |
304 | 2300 __ movptr(r13, Address(rsp, saved_r13_offset * wordSize)); |
2301 __ movptr(r14, Address(rsp, saved_r14_offset * wordSize)); | |
0 | 2302 inc_counter_np(SharedRuntime::_checkcast_array_copy_ctr); |
2303 restore_arg_regs(); | |
2304 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
2305 __ ret(0); | |
2306 | |
2307 return start; | |
2308 } | |
2309 | |
2310 // | |
2311 // Generate 'unsafe' array copy stub | |
2312 // Though just as safe as the other stubs, it takes an unscaled | |
2313 // size_t argument instead of an element count. | |
2314 // | |
2315 // Input: | |
2316 // c_rarg0 - source array address | |
2317 // c_rarg1 - destination array address | |
2318 // c_rarg2 - byte count, treated as ssize_t, can be zero | |
2319 // | |
2320 // Examines the alignment of the operands and dispatches | |
2321 // to a long, int, short, or byte copy loop. | |
2322 // | |
2313
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2323 address generate_unsafe_copy(const char *name, |
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2324 address byte_copy_entry, address short_copy_entry, |
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2325 address int_copy_entry, address long_copy_entry) { |
0 | 2326 |
2327 Label L_long_aligned, L_int_aligned, L_short_aligned; | |
2328 | |
2329 // Input registers (before setup_arg_regs) | |
2330 const Register from = c_rarg0; // source array address | |
2331 const Register to = c_rarg1; // destination array address | |
2332 const Register size = c_rarg2; // byte count (size_t) | |
2333 | |
2334 // Register used as a temp | |
2335 const Register bits = rax; // test copy of low bits | |
2336 | |
2337 __ align(CodeEntryAlignment); | |
2338 StubCodeMark mark(this, "StubRoutines", name); | |
2339 address start = __ pc(); | |
2340 | |
2341 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2342 | |
2343 // bump this on entry, not on exit: | |
2344 inc_counter_np(SharedRuntime::_unsafe_array_copy_ctr); | |
2345 | |
304 | 2346 __ mov(bits, from); |
2347 __ orptr(bits, to); | |
2348 __ orptr(bits, size); | |
0 | 2349 |
2350 __ testb(bits, BytesPerLong-1); | |
2351 __ jccb(Assembler::zero, L_long_aligned); | |
2352 | |
2353 __ testb(bits, BytesPerInt-1); | |
2354 __ jccb(Assembler::zero, L_int_aligned); | |
2355 | |
2356 __ testb(bits, BytesPerShort-1); | |
2357 __ jump_cc(Assembler::notZero, RuntimeAddress(byte_copy_entry)); | |
2358 | |
2359 __ BIND(L_short_aligned); | |
304 | 2360 __ shrptr(size, LogBytesPerShort); // size => short_count |
0 | 2361 __ jump(RuntimeAddress(short_copy_entry)); |
2362 | |
2363 __ BIND(L_int_aligned); | |
304 | 2364 __ shrptr(size, LogBytesPerInt); // size => int_count |
0 | 2365 __ jump(RuntimeAddress(int_copy_entry)); |
2366 | |
2367 __ BIND(L_long_aligned); | |
304 | 2368 __ shrptr(size, LogBytesPerLong); // size => qword_count |
0 | 2369 __ jump(RuntimeAddress(long_copy_entry)); |
2370 | |
2371 return start; | |
2372 } | |
2373 | |
2374 // Perform range checks on the proposed arraycopy. | |
2375 // Kills temp, but nothing else. | |
2376 // Also, clean the sign bits of src_pos and dst_pos. | |
2377 void arraycopy_range_checks(Register src, // source array oop (c_rarg0) | |
2378 Register src_pos, // source position (c_rarg1) | |
2379 Register dst, // destination array oo (c_rarg2) | |
2380 Register dst_pos, // destination position (c_rarg3) | |
2381 Register length, | |
2382 Register temp, | |
2383 Label& L_failed) { | |
2384 BLOCK_COMMENT("arraycopy_range_checks:"); | |
2385 | |
2386 // if (src_pos + length > arrayOop(src)->length()) FAIL; | |
2387 __ movl(temp, length); | |
2388 __ addl(temp, src_pos); // src_pos + length | |
2389 __ cmpl(temp, Address(src, arrayOopDesc::length_offset_in_bytes())); | |
2390 __ jcc(Assembler::above, L_failed); | |
2391 | |
2392 // if (dst_pos + length > arrayOop(dst)->length()) FAIL; | |
2393 __ movl(temp, length); | |
2394 __ addl(temp, dst_pos); // dst_pos + length | |
2395 __ cmpl(temp, Address(dst, arrayOopDesc::length_offset_in_bytes())); | |
2396 __ jcc(Assembler::above, L_failed); | |
2397 | |
2398 // Have to clean up high 32-bits of 'src_pos' and 'dst_pos'. | |
2399 // Move with sign extension can be used since they are positive. | |
2400 __ movslq(src_pos, src_pos); | |
2401 __ movslq(dst_pos, dst_pos); | |
2402 | |
2403 BLOCK_COMMENT("arraycopy_range_checks done"); | |
2404 } | |
2405 | |
2406 // | |
2407 // Generate generic array copy stubs | |
2408 // | |
2409 // Input: | |
2410 // c_rarg0 - src oop | |
2411 // c_rarg1 - src_pos (32-bits) | |
2412 // c_rarg2 - dst oop | |
2413 // c_rarg3 - dst_pos (32-bits) | |
2414 // not Win64 | |
2415 // c_rarg4 - element count (32-bits) | |
2416 // Win64 | |
2417 // rsp+40 - element count (32-bits) | |
2418 // | |
2419 // Output: | |
2420 // rax == 0 - success | |
2421 // rax == -1^K - failure, where K is partial transfer count | |
2422 // | |
2313
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2423 address generate_generic_copy(const char *name, |
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2424 address byte_copy_entry, address short_copy_entry, |
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2425 address int_copy_entry, address long_copy_entry, |
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2426 address oop_copy_entry, address checkcast_copy_entry) { |
0 | 2427 |
2428 Label L_failed, L_failed_0, L_objArray; | |
2429 Label L_copy_bytes, L_copy_shorts, L_copy_ints, L_copy_longs; | |
2430 | |
2431 // Input registers | |
2432 const Register src = c_rarg0; // source array oop | |
2433 const Register src_pos = c_rarg1; // source position | |
2434 const Register dst = c_rarg2; // destination array oop | |
2435 const Register dst_pos = c_rarg3; // destination position | |
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2436 #ifndef _WIN64 |
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2437 const Register length = c_rarg4; |
0 | 2438 #else |
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2439 const Address length(rsp, 6 * wordSize); // elements count is on stack on Win64 |
0 | 2440 #endif |
2441 | |
2442 { int modulus = CodeEntryAlignment; | |
2443 int target = modulus - 5; // 5 = sizeof jmp(L_failed) | |
2444 int advance = target - (__ offset() % modulus); | |
2445 if (advance < 0) advance += modulus; | |
2446 if (advance > 0) __ nop(advance); | |
2447 } | |
2448 StubCodeMark mark(this, "StubRoutines", name); | |
2449 | |
2450 // Short-hop target to L_failed. Makes for denser prologue code. | |
2451 __ BIND(L_failed_0); | |
2452 __ jmp(L_failed); | |
2453 assert(__ offset() % CodeEntryAlignment == 0, "no further alignment needed"); | |
2454 | |
2455 __ align(CodeEntryAlignment); | |
2456 address start = __ pc(); | |
2457 | |
2458 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2459 | |
2460 // bump this on entry, not on exit: | |
2461 inc_counter_np(SharedRuntime::_generic_array_copy_ctr); | |
2462 | |
2463 //----------------------------------------------------------------------- | |
2464 // Assembler stub will be used for this call to arraycopy | |
2465 // if the following conditions are met: | |
2466 // | |
2467 // (1) src and dst must not be null. | |
2468 // (2) src_pos must not be negative. | |
2469 // (3) dst_pos must not be negative. | |
2470 // (4) length must not be negative. | |
2471 // (5) src klass and dst klass should be the same and not NULL. | |
2472 // (6) src and dst should be arrays. | |
2473 // (7) src_pos + length must not exceed length of src. | |
2474 // (8) dst_pos + length must not exceed length of dst. | |
2475 // | |
2476 | |
2477 // if (src == NULL) return -1; | |
304 | 2478 __ testptr(src, src); // src oop |
0 | 2479 size_t j1off = __ offset(); |
2480 __ jccb(Assembler::zero, L_failed_0); | |
2481 | |
2482 // if (src_pos < 0) return -1; | |
2483 __ testl(src_pos, src_pos); // src_pos (32-bits) | |
2484 __ jccb(Assembler::negative, L_failed_0); | |
2485 | |
2486 // if (dst == NULL) return -1; | |
304 | 2487 __ testptr(dst, dst); // dst oop |
0 | 2488 __ jccb(Assembler::zero, L_failed_0); |
2489 | |
2490 // if (dst_pos < 0) return -1; | |
2491 __ testl(dst_pos, dst_pos); // dst_pos (32-bits) | |
2492 size_t j4off = __ offset(); | |
2493 __ jccb(Assembler::negative, L_failed_0); | |
2494 | |
2495 // The first four tests are very dense code, | |
2496 // but not quite dense enough to put four | |
2497 // jumps in a 16-byte instruction fetch buffer. | |
2498 // That's good, because some branch predicters | |
2499 // do not like jumps so close together. | |
2500 // Make sure of this. | |
2501 guarantee(((j1off ^ j4off) & ~15) != 0, "I$ line of 1st & 4th jumps"); | |
2502 | |
2503 // registers used as temp | |
2504 const Register r11_length = r11; // elements count to copy | |
2505 const Register r10_src_klass = r10; // array klass | |
2506 | |
2507 // if (length < 0) return -1; | |
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2508 __ movl(r11_length, length); // length (elements count, 32-bits value) |
0 | 2509 __ testl(r11_length, r11_length); |
2510 __ jccb(Assembler::negative, L_failed_0); | |
2511 | |
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2512 __ load_klass(r10_src_klass, src); |
0 | 2513 #ifdef ASSERT |
2514 // assert(src->klass() != NULL); | |
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2515 { |
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2516 BLOCK_COMMENT("assert klasses not null {"); |
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2517 Label L1, L2; |
304 | 2518 __ testptr(r10_src_klass, r10_src_klass); |
0 | 2519 __ jcc(Assembler::notZero, L2); // it is broken if klass is NULL |
2520 __ bind(L1); | |
2521 __ stop("broken null klass"); | |
2522 __ bind(L2); | |
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2523 __ load_klass(rax, dst); |
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2524 __ cmpq(rax, 0); |
0 | 2525 __ jcc(Assembler::equal, L1); // this would be broken also |
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2526 BLOCK_COMMENT("} assert klasses not null done"); |
0 | 2527 } |
2528 #endif | |
2529 | |
2530 // Load layout helper (32-bits) | |
2531 // | |
2532 // |array_tag| | header_size | element_type | |log2_element_size| | |
2533 // 32 30 24 16 8 2 0 | |
2534 // | |
2535 // array_tag: typeArray = 0x3, objArray = 0x2, non-array = 0x0 | |
2536 // | |
2537 | |
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2538 const int lh_offset = klassOopDesc::header_size() * HeapWordSize + |
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2539 Klass::layout_helper_offset_in_bytes(); |
0 | 2540 |
2541 // Handle objArrays completely differently... | |
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2542 const jint objArray_lh = Klass::array_layout_helper(T_OBJECT); |
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2543 __ cmpl(Address(r10_src_klass, lh_offset), objArray_lh); |
0 | 2544 __ jcc(Assembler::equal, L_objArray); |
2545 | |
2546 // if (src->klass() != dst->klass()) return -1; | |
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2547 __ load_klass(rax, dst); |
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2548 __ cmpq(r10_src_klass, rax); |
0 | 2549 __ jcc(Assembler::notEqual, L_failed); |
2550 | |
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2551 const Register rax_lh = rax; // layout helper |
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2552 __ movl(rax_lh, Address(r10_src_klass, lh_offset)); |
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2553 |
0 | 2554 // if (!src->is_Array()) return -1; |
2555 __ cmpl(rax_lh, Klass::_lh_neutral_value); | |
2556 __ jcc(Assembler::greaterEqual, L_failed); | |
2557 | |
2558 // At this point, it is known to be a typeArray (array_tag 0x3). | |
2559 #ifdef ASSERT | |
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2560 { |
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2561 BLOCK_COMMENT("assert primitive array {"); |
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2562 Label L; |
0 | 2563 __ cmpl(rax_lh, (Klass::_lh_array_tag_type_value << Klass::_lh_array_tag_shift)); |
2564 __ jcc(Assembler::greaterEqual, L); | |
2565 __ stop("must be a primitive array"); | |
2566 __ bind(L); | |
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2567 BLOCK_COMMENT("} assert primitive array done"); |
0 | 2568 } |
2569 #endif | |
2570 | |
2571 arraycopy_range_checks(src, src_pos, dst, dst_pos, r11_length, | |
2572 r10, L_failed); | |
2573 | |
2574 // typeArrayKlass | |
2575 // | |
2576 // src_addr = (src + array_header_in_bytes()) + (src_pos << log2elemsize); | |
2577 // dst_addr = (dst + array_header_in_bytes()) + (dst_pos << log2elemsize); | |
2578 // | |
2579 | |
2580 const Register r10_offset = r10; // array offset | |
2581 const Register rax_elsize = rax_lh; // element size | |
2582 | |
2583 __ movl(r10_offset, rax_lh); | |
2584 __ shrl(r10_offset, Klass::_lh_header_size_shift); | |
304 | 2585 __ andptr(r10_offset, Klass::_lh_header_size_mask); // array_offset |
2586 __ addptr(src, r10_offset); // src array offset | |
2587 __ addptr(dst, r10_offset); // dst array offset | |
0 | 2588 BLOCK_COMMENT("choose copy loop based on element size"); |
2589 __ andl(rax_lh, Klass::_lh_log2_element_size_mask); // rax_lh -> rax_elsize | |
2590 | |
2591 // next registers should be set before the jump to corresponding stub | |
2592 const Register from = c_rarg0; // source array address | |
2593 const Register to = c_rarg1; // destination array address | |
2594 const Register count = c_rarg2; // elements count | |
2595 | |
2596 // 'from', 'to', 'count' registers should be set in such order | |
2597 // since they are the same as 'src', 'src_pos', 'dst'. | |
2598 | |
2599 __ BIND(L_copy_bytes); | |
2600 __ cmpl(rax_elsize, 0); | |
2601 __ jccb(Assembler::notEqual, L_copy_shorts); | |
304 | 2602 __ lea(from, Address(src, src_pos, Address::times_1, 0));// src_addr |
2603 __ lea(to, Address(dst, dst_pos, Address::times_1, 0));// dst_addr | |
2604 __ movl2ptr(count, r11_length); // length | |
0 | 2605 __ jump(RuntimeAddress(byte_copy_entry)); |
2606 | |
2607 __ BIND(L_copy_shorts); | |
2608 __ cmpl(rax_elsize, LogBytesPerShort); | |
2609 __ jccb(Assembler::notEqual, L_copy_ints); | |
304 | 2610 __ lea(from, Address(src, src_pos, Address::times_2, 0));// src_addr |
2611 __ lea(to, Address(dst, dst_pos, Address::times_2, 0));// dst_addr | |
2612 __ movl2ptr(count, r11_length); // length | |
0 | 2613 __ jump(RuntimeAddress(short_copy_entry)); |
2614 | |
2615 __ BIND(L_copy_ints); | |
2616 __ cmpl(rax_elsize, LogBytesPerInt); | |
2617 __ jccb(Assembler::notEqual, L_copy_longs); | |
304 | 2618 __ lea(from, Address(src, src_pos, Address::times_4, 0));// src_addr |
2619 __ lea(to, Address(dst, dst_pos, Address::times_4, 0));// dst_addr | |
2620 __ movl2ptr(count, r11_length); // length | |
0 | 2621 __ jump(RuntimeAddress(int_copy_entry)); |
2622 | |
2623 __ BIND(L_copy_longs); | |
2624 #ifdef ASSERT | |
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2625 { |
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2626 BLOCK_COMMENT("assert long copy {"); |
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2627 Label L; |
0 | 2628 __ cmpl(rax_elsize, LogBytesPerLong); |
2629 __ jcc(Assembler::equal, L); | |
2630 __ stop("must be long copy, but elsize is wrong"); | |
2631 __ bind(L); | |
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2632 BLOCK_COMMENT("} assert long copy done"); |
0 | 2633 } |
2634 #endif | |
304 | 2635 __ lea(from, Address(src, src_pos, Address::times_8, 0));// src_addr |
2636 __ lea(to, Address(dst, dst_pos, Address::times_8, 0));// dst_addr | |
2637 __ movl2ptr(count, r11_length); // length | |
0 | 2638 __ jump(RuntimeAddress(long_copy_entry)); |
2639 | |
2640 // objArrayKlass | |
2641 __ BIND(L_objArray); | |
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2642 // live at this point: r10_src_klass, r11_length, src[_pos], dst[_pos] |
0 | 2643 |
2644 Label L_plain_copy, L_checkcast_copy; | |
2645 // test array classes for subtyping | |
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2646 __ load_klass(rax, dst); |
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2647 __ cmpq(r10_src_klass, rax); // usual case is exact equality |
0 | 2648 __ jcc(Assembler::notEqual, L_checkcast_copy); |
2649 | |
2650 // Identically typed arrays can be copied without element-wise checks. | |
2651 arraycopy_range_checks(src, src_pos, dst, dst_pos, r11_length, | |
2652 r10, L_failed); | |
2653 | |
304 | 2654 __ lea(from, Address(src, src_pos, TIMES_OOP, |
0 | 2655 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // src_addr |
304 | 2656 __ lea(to, Address(dst, dst_pos, TIMES_OOP, |
2657 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // dst_addr | |
2658 __ movl2ptr(count, r11_length); // length | |
0 | 2659 __ BIND(L_plain_copy); |
2660 __ jump(RuntimeAddress(oop_copy_entry)); | |
2661 | |
2662 __ BIND(L_checkcast_copy); | |
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2663 // live at this point: r10_src_klass, r11_length, rax (dst_klass) |
0 | 2664 { |
2665 // Before looking at dst.length, make sure dst is also an objArray. | |
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2666 __ cmpl(Address(rax, lh_offset), objArray_lh); |
0 | 2667 __ jcc(Assembler::notEqual, L_failed); |
2668 | |
2669 // It is safe to examine both src.length and dst.length. | |
2670 arraycopy_range_checks(src, src_pos, dst, dst_pos, r11_length, | |
2671 rax, L_failed); | |
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2672 |
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2673 const Register r11_dst_klass = r11; |
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2674 __ load_klass(r11_dst_klass, dst); // reload |
0 | 2675 |
2676 // Marshal the base address arguments now, freeing registers. | |
304 | 2677 __ lea(from, Address(src, src_pos, TIMES_OOP, |
0 | 2678 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
304 | 2679 __ lea(to, Address(dst, dst_pos, TIMES_OOP, |
0 | 2680 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
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2681 __ movl(count, length); // length (reloaded) |
0 | 2682 Register sco_temp = c_rarg3; // this register is free now |
2683 assert_different_registers(from, to, count, sco_temp, | |
2684 r11_dst_klass, r10_src_klass); | |
2685 assert_clean_int(count, sco_temp); | |
2686 | |
2687 // Generate the type check. | |
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2688 const int sco_offset = (klassOopDesc::header_size() * HeapWordSize + |
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2689 Klass::super_check_offset_offset_in_bytes()); |
0 | 2690 __ movl(sco_temp, Address(r11_dst_klass, sco_offset)); |
2691 assert_clean_int(sco_temp, rax); | |
2692 generate_type_check(r10_src_klass, sco_temp, r11_dst_klass, L_plain_copy); | |
2693 | |
2694 // Fetch destination element klass from the objArrayKlass header. | |
2695 int ek_offset = (klassOopDesc::header_size() * HeapWordSize + | |
2696 objArrayKlass::element_klass_offset_in_bytes()); | |
304 | 2697 __ movptr(r11_dst_klass, Address(r11_dst_klass, ek_offset)); |
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2698 __ movl( sco_temp, Address(r11_dst_klass, sco_offset)); |
0 | 2699 assert_clean_int(sco_temp, rax); |
2700 | |
2701 // the checkcast_copy loop needs two extra arguments: | |
2702 assert(c_rarg3 == sco_temp, "#3 already in place"); | |
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2703 // Set up arguments for checkcast_copy_entry. |
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2704 setup_arg_regs(4); |
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2705 __ movptr(r8, r11_dst_klass); // dst.klass.element_klass, r8 is c_rarg4 on Linux/Solaris |
0 | 2706 __ jump(RuntimeAddress(checkcast_copy_entry)); |
2707 } | |
2708 | |
2709 __ BIND(L_failed); | |
304 | 2710 __ xorptr(rax, rax); |
2711 __ notptr(rax); // return -1 | |
0 | 2712 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2713 __ ret(0); | |
2714 | |
2715 return start; | |
2716 } | |
2717 | |
2718 void generate_arraycopy_stubs() { | |
2313
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2719 address entry; |
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2720 address entry_jbyte_arraycopy; |
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2721 address entry_jshort_arraycopy; |
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2722 address entry_jint_arraycopy; |
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2723 address entry_oop_arraycopy; |
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2724 address entry_jlong_arraycopy; |
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2725 address entry_checkcast_arraycopy; |
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2726 |
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2727 StubRoutines::_jbyte_disjoint_arraycopy = generate_disjoint_byte_copy(false, &entry, |
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2728 "jbyte_disjoint_arraycopy"); |
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2729 StubRoutines::_jbyte_arraycopy = generate_conjoint_byte_copy(false, entry, &entry_jbyte_arraycopy, |
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2730 "jbyte_arraycopy"); |
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2731 |
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2732 StubRoutines::_jshort_disjoint_arraycopy = generate_disjoint_short_copy(false, &entry, |
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2733 "jshort_disjoint_arraycopy"); |
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2734 StubRoutines::_jshort_arraycopy = generate_conjoint_short_copy(false, entry, &entry_jshort_arraycopy, |
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2735 "jshort_arraycopy"); |
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2736 |
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2737 StubRoutines::_jint_disjoint_arraycopy = generate_disjoint_int_oop_copy(false, false, &entry, |
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2738 "jint_disjoint_arraycopy"); |
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2739 StubRoutines::_jint_arraycopy = generate_conjoint_int_oop_copy(false, false, entry, |
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|
2740 &entry_jint_arraycopy, "jint_arraycopy"); |
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7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2741 |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
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2006
diff
changeset
|
2742 StubRoutines::_jlong_disjoint_arraycopy = generate_disjoint_long_oop_copy(false, false, &entry, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2743 "jlong_disjoint_arraycopy"); |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2744 StubRoutines::_jlong_arraycopy = generate_conjoint_long_oop_copy(false, false, entry, |
d89a22843c62
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iveresov
parents:
2006
diff
changeset
|
2745 &entry_jlong_arraycopy, "jlong_arraycopy"); |
0 | 2746 |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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16
diff
changeset
|
2747 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
16
diff
changeset
|
2748 if (UseCompressedOops) { |
2313
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2749 StubRoutines::_oop_disjoint_arraycopy = generate_disjoint_int_oop_copy(false, true, &entry, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2750 "oop_disjoint_arraycopy"); |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2751 StubRoutines::_oop_arraycopy = generate_conjoint_int_oop_copy(false, true, entry, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2752 &entry_oop_arraycopy, "oop_arraycopy"); |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
16
diff
changeset
|
2753 } else { |
2313
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2754 StubRoutines::_oop_disjoint_arraycopy = generate_disjoint_long_oop_copy(false, true, &entry, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2755 "oop_disjoint_arraycopy"); |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2756 StubRoutines::_oop_arraycopy = generate_conjoint_long_oop_copy(false, true, entry, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2757 &entry_oop_arraycopy, "oop_arraycopy"); |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
16
diff
changeset
|
2758 } |
0 | 2759 |
2313
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2760 StubRoutines::_checkcast_arraycopy = generate_checkcast_copy("checkcast_arraycopy", &entry_checkcast_arraycopy); |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2761 StubRoutines::_unsafe_arraycopy = generate_unsafe_copy("unsafe_arraycopy", |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2762 entry_jbyte_arraycopy, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2763 entry_jshort_arraycopy, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2764 entry_jint_arraycopy, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2765 entry_jlong_arraycopy); |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2766 StubRoutines::_generic_arraycopy = generate_generic_copy("generic_arraycopy", |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2767 entry_jbyte_arraycopy, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2768 entry_jshort_arraycopy, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2769 entry_jint_arraycopy, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2770 entry_oop_arraycopy, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2771 entry_jlong_arraycopy, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2772 entry_checkcast_arraycopy); |
0 | 2773 |
1763 | 2774 StubRoutines::_jbyte_fill = generate_fill(T_BYTE, false, "jbyte_fill"); |
2775 StubRoutines::_jshort_fill = generate_fill(T_SHORT, false, "jshort_fill"); | |
2776 StubRoutines::_jint_fill = generate_fill(T_INT, false, "jint_fill"); | |
2777 StubRoutines::_arrayof_jbyte_fill = generate_fill(T_BYTE, true, "arrayof_jbyte_fill"); | |
2778 StubRoutines::_arrayof_jshort_fill = generate_fill(T_SHORT, true, "arrayof_jshort_fill"); | |
2779 StubRoutines::_arrayof_jint_fill = generate_fill(T_INT, true, "arrayof_jint_fill"); | |
2780 | |
0 | 2781 // We don't generate specialized code for HeapWord-aligned source |
2782 // arrays, so just use the code we've already generated | |
2783 StubRoutines::_arrayof_jbyte_disjoint_arraycopy = StubRoutines::_jbyte_disjoint_arraycopy; | |
2784 StubRoutines::_arrayof_jbyte_arraycopy = StubRoutines::_jbyte_arraycopy; | |
2785 | |
2786 StubRoutines::_arrayof_jshort_disjoint_arraycopy = StubRoutines::_jshort_disjoint_arraycopy; | |
2787 StubRoutines::_arrayof_jshort_arraycopy = StubRoutines::_jshort_arraycopy; | |
2788 | |
2789 StubRoutines::_arrayof_jint_disjoint_arraycopy = StubRoutines::_jint_disjoint_arraycopy; | |
2790 StubRoutines::_arrayof_jint_arraycopy = StubRoutines::_jint_arraycopy; | |
2791 | |
2792 StubRoutines::_arrayof_jlong_disjoint_arraycopy = StubRoutines::_jlong_disjoint_arraycopy; | |
2793 StubRoutines::_arrayof_jlong_arraycopy = StubRoutines::_jlong_arraycopy; | |
2794 | |
2795 StubRoutines::_arrayof_oop_disjoint_arraycopy = StubRoutines::_oop_disjoint_arraycopy; | |
2796 StubRoutines::_arrayof_oop_arraycopy = StubRoutines::_oop_arraycopy; | |
2797 } | |
2798 | |
1174
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2799 void generate_math_stubs() { |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2800 { |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2801 StubCodeMark mark(this, "StubRoutines", "log"); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2802 StubRoutines::_intrinsic_log = (double (*)(double)) __ pc(); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2803 |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2804 __ subq(rsp, 8); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2805 __ movdbl(Address(rsp, 0), xmm0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2806 __ fld_d(Address(rsp, 0)); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2807 __ flog(); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2808 __ fstp_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2809 __ movdbl(xmm0, Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2810 __ addq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2811 __ ret(0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2812 } |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2813 { |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2814 StubCodeMark mark(this, "StubRoutines", "log10"); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2815 StubRoutines::_intrinsic_log10 = (double (*)(double)) __ pc(); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2816 |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2817 __ subq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2818 __ movdbl(Address(rsp, 0), xmm0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2819 __ fld_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2820 __ flog10(); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2821 __ fstp_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2822 __ movdbl(xmm0, Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2823 __ addq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2824 __ ret(0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2825 } |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2826 { |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2827 StubCodeMark mark(this, "StubRoutines", "sin"); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2828 StubRoutines::_intrinsic_sin = (double (*)(double)) __ pc(); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2829 |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2830 __ subq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2831 __ movdbl(Address(rsp, 0), xmm0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2832 __ fld_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2833 __ trigfunc('s'); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2834 __ fstp_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2835 __ movdbl(xmm0, Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2836 __ addq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2837 __ ret(0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2838 } |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2839 { |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2840 StubCodeMark mark(this, "StubRoutines", "cos"); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2841 StubRoutines::_intrinsic_cos = (double (*)(double)) __ pc(); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2842 |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2843 __ subq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2844 __ movdbl(Address(rsp, 0), xmm0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2845 __ fld_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2846 __ trigfunc('c'); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2847 __ fstp_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2848 __ movdbl(xmm0, Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2849 __ addq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2850 __ ret(0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2851 } |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2852 { |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2853 StubCodeMark mark(this, "StubRoutines", "tan"); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2854 StubRoutines::_intrinsic_tan = (double (*)(double)) __ pc(); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2855 |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2856 __ subq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2857 __ movdbl(Address(rsp, 0), xmm0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2858 __ fld_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2859 __ trigfunc('t'); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2860 __ fstp_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2861 __ movdbl(xmm0, Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2862 __ addq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2863 __ ret(0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2864 } |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2865 |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2866 // The intrinsic version of these seem to return the same value as |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2867 // the strict version. |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2868 StubRoutines::_intrinsic_exp = SharedRuntime::dexp; |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2869 StubRoutines::_intrinsic_pow = SharedRuntime::dpow; |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2870 } |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2871 |
0 | 2872 #undef __ |
2873 #define __ masm-> | |
2874 | |
2875 // Continuation point for throwing of implicit exceptions that are | |
2876 // not handled in the current activation. Fabricates an exception | |
2877 // oop and initiates normal exception dispatching in this | |
2878 // frame. Since we need to preserve callee-saved values (currently | |
2879 // only for C2, but done for C1 as well) we need a callee-saved oop | |
2880 // map and therefore have to make these stubs into RuntimeStubs | |
2881 // rather than BufferBlobs. If the compiler needs all registers to | |
2882 // be preserved between the fault point and the exception handler | |
2883 // then it must assume responsibility for that in | |
2884 // AbstractCompiler::continuation_for_implicit_null_exception or | |
2885 // continuation_for_implicit_division_by_zero_exception. All other | |
2886 // implicit exceptions (e.g., NullPointerException or | |
2887 // AbstractMethodError on entry) are either at call sites or | |
2888 // otherwise assume that stack unwinding will be initiated, so | |
2889 // caller saved registers were assumed volatile in the compiler. | |
2890 address generate_throw_exception(const char* name, | |
2891 address runtime_entry, | |
2892 bool restore_saved_exception_pc) { | |
2893 // Information about frame layout at time of blocking runtime call. | |
2894 // Note that we only have to preserve callee-saved registers since | |
2895 // the compilers are responsible for supplying a continuation point | |
2896 // if they expect all registers to be preserved. | |
2897 enum layout { | |
2898 rbp_off = frame::arg_reg_save_area_bytes/BytesPerInt, | |
2899 rbp_off2, | |
2900 return_off, | |
2901 return_off2, | |
2902 framesize // inclusive of return address | |
2903 }; | |
2904 | |
2905 int insts_size = 512; | |
2906 int locs_size = 64; | |
2907 | |
2908 CodeBuffer code(name, insts_size, locs_size); | |
2909 OopMapSet* oop_maps = new OopMapSet(); | |
2910 MacroAssembler* masm = new MacroAssembler(&code); | |
2911 | |
2912 address start = __ pc(); | |
2913 | |
2914 // This is an inlined and slightly modified version of call_VM | |
2915 // which has the ability to fetch the return PC out of | |
2916 // thread-local storage and also sets up last_Java_sp slightly | |
2917 // differently than the real call_VM | |
2918 if (restore_saved_exception_pc) { | |
304 | 2919 __ movptr(rax, |
2920 Address(r15_thread, | |
2921 in_bytes(JavaThread::saved_exception_pc_offset()))); | |
2922 __ push(rax); | |
0 | 2923 } |
2924 | |
2925 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2926 | |
2927 assert(is_even(framesize/2), "sp not 16-byte aligned"); | |
2928 | |
2929 // return address and rbp are already in place | |
304 | 2930 __ subptr(rsp, (framesize-4) << LogBytesPerInt); // prolog |
0 | 2931 |
2932 int frame_complete = __ pc() - start; | |
2933 | |
2934 // Set up last_Java_sp and last_Java_fp | |
2935 __ set_last_Java_frame(rsp, rbp, NULL); | |
2936 | |
2937 // Call runtime | |
304 | 2938 __ movptr(c_rarg0, r15_thread); |
0 | 2939 BLOCK_COMMENT("call runtime_entry"); |
2940 __ call(RuntimeAddress(runtime_entry)); | |
2941 | |
2942 // Generate oop map | |
2943 OopMap* map = new OopMap(framesize, 0); | |
2944 | |
2945 oop_maps->add_gc_map(__ pc() - start, map); | |
2946 | |
2947 __ reset_last_Java_frame(true, false); | |
2948 | |
2949 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
2950 | |
2951 // check for pending exceptions | |
2952 #ifdef ASSERT | |
2953 Label L; | |
304 | 2954 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), |
2955 (int32_t) NULL_WORD); | |
0 | 2956 __ jcc(Assembler::notEqual, L); |
2957 __ should_not_reach_here(); | |
2958 __ bind(L); | |
2959 #endif // ASSERT | |
2960 __ jump(RuntimeAddress(StubRoutines::forward_exception_entry())); | |
2961 | |
2962 | |
2963 // codeBlob framesize is in words (not VMRegImpl::slot_size) | |
2964 RuntimeStub* stub = | |
2965 RuntimeStub::new_runtime_stub(name, | |
2966 &code, | |
2967 frame_complete, | |
2968 (framesize >> (LogBytesPerWord - LogBytesPerInt)), | |
2969 oop_maps, false); | |
2970 return stub->entry_point(); | |
2971 } | |
2972 | |
2973 // Initialization | |
2974 void generate_initial() { | |
2975 // Generates all stubs and initializes the entry points | |
2976 | |
2977 // This platform-specific stub is needed by generate_call_stub() | |
304 | 2978 StubRoutines::x86::_mxcsr_std = generate_fp_mask("mxcsr_std", 0x0000000000001F80); |
0 | 2979 |
2980 // entry points that exist in all platforms Note: This is code | |
2981 // that could be shared among different platforms - however the | |
2982 // benefit seems to be smaller than the disadvantage of having a | |
2983 // much more complicated generator structure. See also comment in | |
2984 // stubRoutines.hpp. | |
2985 | |
2986 StubRoutines::_forward_exception_entry = generate_forward_exception(); | |
2987 | |
2988 StubRoutines::_call_stub_entry = | |
2989 generate_call_stub(StubRoutines::_call_stub_return_address); | |
2990 | |
2991 // is referenced by megamorphic call | |
2992 StubRoutines::_catch_exception_entry = generate_catch_exception(); | |
2993 | |
2994 // atomic calls | |
2995 StubRoutines::_atomic_xchg_entry = generate_atomic_xchg(); | |
2996 StubRoutines::_atomic_xchg_ptr_entry = generate_atomic_xchg_ptr(); | |
2997 StubRoutines::_atomic_cmpxchg_entry = generate_atomic_cmpxchg(); | |
2998 StubRoutines::_atomic_cmpxchg_long_entry = generate_atomic_cmpxchg_long(); | |
2999 StubRoutines::_atomic_add_entry = generate_atomic_add(); | |
3000 StubRoutines::_atomic_add_ptr_entry = generate_atomic_add_ptr(); | |
3001 StubRoutines::_fence_entry = generate_orderaccess_fence(); | |
3002 | |
3003 StubRoutines::_handler_for_unsafe_access_entry = | |
3004 generate_handler_for_unsafe_access(); | |
3005 | |
3006 // platform dependent | |
304 | 3007 StubRoutines::x86::_get_previous_fp_entry = generate_get_previous_fp(); |
3008 | |
3009 StubRoutines::x86::_verify_mxcsr_entry = generate_verify_mxcsr(); | |
0 | 3010 } |
3011 | |
3012 void generate_all() { | |
3013 // Generates all stubs and initializes the entry points | |
3014 | |
3015 // These entry points require SharedInfo::stack0 to be set up in | |
3016 // non-core builds and need to be relocatable, so they each | |
3017 // fabricate a RuntimeStub internally. | |
3018 StubRoutines::_throw_AbstractMethodError_entry = | |
3019 generate_throw_exception("AbstractMethodError throw_exception", | |
3020 CAST_FROM_FN_PTR(address, | |
3021 SharedRuntime:: | |
3022 throw_AbstractMethodError), | |
3023 false); | |
3024 | |
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3025 StubRoutines::_throw_IncompatibleClassChangeError_entry = |
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3026 generate_throw_exception("IncompatibleClassChangeError throw_exception", |
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3027 CAST_FROM_FN_PTR(address, |
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3028 SharedRuntime:: |
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3029 throw_IncompatibleClassChangeError), |
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3030 false); |
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3031 |
0 | 3032 StubRoutines::_throw_ArithmeticException_entry = |
3033 generate_throw_exception("ArithmeticException throw_exception", | |
3034 CAST_FROM_FN_PTR(address, | |
3035 SharedRuntime:: | |
3036 throw_ArithmeticException), | |
3037 true); | |
3038 | |
3039 StubRoutines::_throw_NullPointerException_entry = | |
3040 generate_throw_exception("NullPointerException throw_exception", | |
3041 CAST_FROM_FN_PTR(address, | |
3042 SharedRuntime:: | |
3043 throw_NullPointerException), | |
3044 true); | |
3045 | |
3046 StubRoutines::_throw_NullPointerException_at_call_entry = | |
3047 generate_throw_exception("NullPointerException at call throw_exception", | |
3048 CAST_FROM_FN_PTR(address, | |
3049 SharedRuntime:: | |
3050 throw_NullPointerException_at_call), | |
3051 false); | |
3052 | |
3053 StubRoutines::_throw_StackOverflowError_entry = | |
3054 generate_throw_exception("StackOverflowError throw_exception", | |
3055 CAST_FROM_FN_PTR(address, | |
3056 SharedRuntime:: | |
3057 throw_StackOverflowError), | |
3058 false); | |
3059 | |
3060 // entry points that are platform specific | |
304 | 3061 StubRoutines::x86::_f2i_fixup = generate_f2i_fixup(); |
3062 StubRoutines::x86::_f2l_fixup = generate_f2l_fixup(); | |
3063 StubRoutines::x86::_d2i_fixup = generate_d2i_fixup(); | |
3064 StubRoutines::x86::_d2l_fixup = generate_d2l_fixup(); | |
3065 | |
3066 StubRoutines::x86::_float_sign_mask = generate_fp_mask("float_sign_mask", 0x7FFFFFFF7FFFFFFF); | |
3067 StubRoutines::x86::_float_sign_flip = generate_fp_mask("float_sign_flip", 0x8000000080000000); | |
3068 StubRoutines::x86::_double_sign_mask = generate_fp_mask("double_sign_mask", 0x7FFFFFFFFFFFFFFF); | |
3069 StubRoutines::x86::_double_sign_flip = generate_fp_mask("double_sign_flip", 0x8000000000000000); | |
0 | 3070 |
3071 // support for verify_oop (must happen after universe_init) | |
3072 StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop(); | |
3073 | |
3074 // arraycopy stubs used by compilers | |
3075 generate_arraycopy_stubs(); | |
1108 | 3076 |
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3077 generate_math_stubs(); |
0 | 3078 } |
3079 | |
3080 public: | |
3081 StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) { | |
3082 if (all) { | |
3083 generate_all(); | |
3084 } else { | |
3085 generate_initial(); | |
3086 } | |
3087 } | |
3088 }; // end class declaration | |
3089 | |
3090 void StubGenerator_generate(CodeBuffer* code, bool all) { | |
3091 StubGenerator g(code, all); | |
3092 } |