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annotate src/cpu/x86/vm/templateInterpreter_x86_64.cpp @ 6229:d900d95bfdb0
7183754: Test runtime/6294277/Test6294277.sh runs wrong JVM
Reviewed-by: kamg, coleenp, ctornqvi
author | fparain |
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date | Mon, 16 Jul 2012 04:06:44 -0700 |
parents | 2fe087c3e814 |
children | 1d7922586cf6 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2012, 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 "interpreter/bytecodeHistogram.hpp" | |
28 #include "interpreter/interpreter.hpp" | |
29 #include "interpreter/interpreterGenerator.hpp" | |
30 #include "interpreter/interpreterRuntime.hpp" | |
31 #include "interpreter/templateTable.hpp" | |
32 #include "oops/arrayOop.hpp" | |
33 #include "oops/methodDataOop.hpp" | |
34 #include "oops/methodOop.hpp" | |
35 #include "oops/oop.inline.hpp" | |
36 #include "prims/jvmtiExport.hpp" | |
37 #include "prims/jvmtiThreadState.hpp" | |
38 #include "runtime/arguments.hpp" | |
39 #include "runtime/deoptimization.hpp" | |
40 #include "runtime/frame.inline.hpp" | |
41 #include "runtime/sharedRuntime.hpp" | |
42 #include "runtime/stubRoutines.hpp" | |
43 #include "runtime/synchronizer.hpp" | |
44 #include "runtime/timer.hpp" | |
45 #include "runtime/vframeArray.hpp" | |
46 #include "utilities/debug.hpp" | |
0 | 47 |
48 #define __ _masm-> | |
49 | |
304 | 50 #ifndef CC_INTERP |
51 | |
0 | 52 const int method_offset = frame::interpreter_frame_method_offset * wordSize; |
53 const int bci_offset = frame::interpreter_frame_bcx_offset * wordSize; | |
54 const int locals_offset = frame::interpreter_frame_locals_offset * wordSize; | |
55 | |
56 //----------------------------------------------------------------------------- | |
57 | |
58 address TemplateInterpreterGenerator::generate_StackOverflowError_handler() { | |
59 address entry = __ pc(); | |
60 | |
61 #ifdef ASSERT | |
62 { | |
63 Label L; | |
304 | 64 __ lea(rax, Address(rbp, |
65 frame::interpreter_frame_monitor_block_top_offset * | |
66 wordSize)); | |
67 __ cmpptr(rax, rsp); // rax = maximal rsp for current rbp (stack | |
68 // grows negative) | |
0 | 69 __ jcc(Assembler::aboveEqual, L); // check if frame is complete |
70 __ stop ("interpreter frame not set up"); | |
71 __ bind(L); | |
72 } | |
73 #endif // ASSERT | |
74 // Restore bcp under the assumption that the current frame is still | |
75 // interpreted | |
76 __ restore_bcp(); | |
77 | |
78 // expression stack must be empty before entering the VM if an | |
79 // exception happened | |
80 __ empty_expression_stack(); | |
81 // throw exception | |
82 __ call_VM(noreg, | |
83 CAST_FROM_FN_PTR(address, | |
84 InterpreterRuntime::throw_StackOverflowError)); | |
85 return entry; | |
86 } | |
87 | |
88 address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler( | |
89 const char* name) { | |
90 address entry = __ pc(); | |
91 // expression stack must be empty before entering the VM if an | |
92 // exception happened | |
93 __ empty_expression_stack(); | |
94 // setup parameters | |
95 // ??? convention: expect aberrant index in register ebx | |
96 __ lea(c_rarg1, ExternalAddress((address)name)); | |
97 __ call_VM(noreg, | |
98 CAST_FROM_FN_PTR(address, | |
99 InterpreterRuntime:: | |
100 throw_ArrayIndexOutOfBoundsException), | |
101 c_rarg1, rbx); | |
102 return entry; | |
103 } | |
104 | |
105 address TemplateInterpreterGenerator::generate_ClassCastException_handler() { | |
106 address entry = __ pc(); | |
107 | |
108 // object is at TOS | |
304 | 109 __ pop(c_rarg1); |
0 | 110 |
111 // expression stack must be empty before entering the VM if an | |
112 // exception happened | |
113 __ empty_expression_stack(); | |
114 | |
115 __ call_VM(noreg, | |
116 CAST_FROM_FN_PTR(address, | |
117 InterpreterRuntime:: | |
118 throw_ClassCastException), | |
119 c_rarg1); | |
120 return entry; | |
121 } | |
122 | |
123 address TemplateInterpreterGenerator::generate_exception_handler_common( | |
124 const char* name, const char* message, bool pass_oop) { | |
125 assert(!pass_oop || message == NULL, "either oop or message but not both"); | |
126 address entry = __ pc(); | |
127 if (pass_oop) { | |
128 // object is at TOS | |
304 | 129 __ pop(c_rarg2); |
0 | 130 } |
131 // expression stack must be empty before entering the VM if an | |
132 // exception happened | |
133 __ empty_expression_stack(); | |
134 // setup parameters | |
135 __ lea(c_rarg1, ExternalAddress((address)name)); | |
136 if (pass_oop) { | |
137 __ call_VM(rax, CAST_FROM_FN_PTR(address, | |
138 InterpreterRuntime:: | |
139 create_klass_exception), | |
140 c_rarg1, c_rarg2); | |
141 } else { | |
142 // kind of lame ExternalAddress can't take NULL because | |
143 // external_word_Relocation will assert. | |
144 if (message != NULL) { | |
145 __ lea(c_rarg2, ExternalAddress((address)message)); | |
146 } else { | |
147 __ movptr(c_rarg2, NULL_WORD); | |
148 } | |
149 __ call_VM(rax, | |
150 CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), | |
151 c_rarg1, c_rarg2); | |
152 } | |
153 // throw exception | |
154 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
155 return entry; | |
156 } | |
157 | |
158 | |
159 address TemplateInterpreterGenerator::generate_continuation_for(TosState state) { | |
160 address entry = __ pc(); | |
161 // NULL last_sp until next java call | |
304 | 162 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 163 __ dispatch_next(state); |
164 return entry; | |
165 } | |
166 | |
167 | |
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168 address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step) { |
0 | 169 address entry = __ pc(); |
170 | |
171 // Restore stack bottom in case i2c adjusted stack | |
304 | 172 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
0 | 173 // and NULL it as marker that esp is now tos until next java call |
304 | 174 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 175 |
176 __ restore_bcp(); | |
177 __ restore_locals(); | |
304 | 178 |
1108 | 179 Label L_got_cache, L_giant_index; |
180 if (EnableInvokeDynamic) { | |
181 __ cmpb(Address(r13, 0), Bytecodes::_invokedynamic); | |
182 __ jcc(Assembler::equal, L_giant_index); | |
183 } | |
1565 | 184 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u2)); |
1108 | 185 __ bind(L_got_cache); |
0 | 186 __ movl(rbx, Address(rbx, rcx, |
1108 | 187 Address::times_ptr, |
0 | 188 in_bytes(constantPoolCacheOopDesc::base_offset()) + |
189 3 * wordSize)); | |
190 __ andl(rbx, 0xFF); | |
304 | 191 __ lea(rsp, Address(rsp, rbx, Address::times_8)); |
0 | 192 __ dispatch_next(state, step); |
1108 | 193 |
194 // out of the main line of code... | |
195 if (EnableInvokeDynamic) { | |
196 __ bind(L_giant_index); | |
1565 | 197 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u4)); |
1108 | 198 __ jmp(L_got_cache); |
199 } | |
200 | |
0 | 201 return entry; |
202 } | |
203 | |
204 | |
205 address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, | |
206 int step) { | |
207 address entry = __ pc(); | |
208 // NULL last_sp until next java call | |
304 | 209 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 210 __ restore_bcp(); |
211 __ restore_locals(); | |
212 // handle exceptions | |
213 { | |
214 Label L; | |
304 | 215 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
0 | 216 __ jcc(Assembler::zero, L); |
217 __ call_VM(noreg, | |
218 CAST_FROM_FN_PTR(address, | |
219 InterpreterRuntime::throw_pending_exception)); | |
220 __ should_not_reach_here(); | |
221 __ bind(L); | |
222 } | |
223 __ dispatch_next(state, step); | |
224 return entry; | |
225 } | |
226 | |
227 int AbstractInterpreter::BasicType_as_index(BasicType type) { | |
228 int i = 0; | |
229 switch (type) { | |
230 case T_BOOLEAN: i = 0; break; | |
231 case T_CHAR : i = 1; break; | |
232 case T_BYTE : i = 2; break; | |
233 case T_SHORT : i = 3; break; | |
234 case T_INT : i = 4; break; | |
235 case T_LONG : i = 5; break; | |
236 case T_VOID : i = 6; break; | |
237 case T_FLOAT : i = 7; break; | |
238 case T_DOUBLE : i = 8; break; | |
239 case T_OBJECT : i = 9; break; | |
240 case T_ARRAY : i = 9; break; | |
241 default : ShouldNotReachHere(); | |
242 } | |
243 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, | |
244 "index out of bounds"); | |
245 return i; | |
246 } | |
247 | |
248 | |
249 address TemplateInterpreterGenerator::generate_result_handler_for( | |
250 BasicType type) { | |
251 address entry = __ pc(); | |
252 switch (type) { | |
253 case T_BOOLEAN: __ c2bool(rax); break; | |
254 case T_CHAR : __ movzwl(rax, rax); break; | |
255 case T_BYTE : __ sign_extend_byte(rax); break; | |
256 case T_SHORT : __ sign_extend_short(rax); break; | |
257 case T_INT : /* nothing to do */ break; | |
258 case T_LONG : /* nothing to do */ break; | |
259 case T_VOID : /* nothing to do */ break; | |
260 case T_FLOAT : /* nothing to do */ break; | |
261 case T_DOUBLE : /* nothing to do */ break; | |
262 case T_OBJECT : | |
263 // retrieve result from frame | |
304 | 264 __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); |
0 | 265 // and verify it |
266 __ verify_oop(rax); | |
267 break; | |
268 default : ShouldNotReachHere(); | |
269 } | |
270 __ ret(0); // return from result handler | |
271 return entry; | |
272 } | |
273 | |
274 address TemplateInterpreterGenerator::generate_safept_entry_for( | |
275 TosState state, | |
276 address runtime_entry) { | |
277 address entry = __ pc(); | |
278 __ push(state); | |
279 __ call_VM(noreg, runtime_entry); | |
280 __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); | |
281 return entry; | |
282 } | |
283 | |
284 | |
285 | |
286 // Helpers for commoning out cases in the various type of method entries. | |
287 // | |
288 | |
289 | |
290 // increment invocation count & check for overflow | |
291 // | |
292 // Note: checking for negative value instead of overflow | |
293 // so we have a 'sticky' overflow test | |
294 // | |
295 // rbx: method | |
296 // ecx: invocation counter | |
297 // | |
298 void InterpreterGenerator::generate_counter_incr( | |
299 Label* overflow, | |
300 Label* profile_method, | |
301 Label* profile_method_continue) { | |
1783 | 302 const Address invocation_counter(rbx, in_bytes(methodOopDesc::invocation_counter_offset()) + |
303 in_bytes(InvocationCounter::counter_offset())); | |
304 // Note: In tiered we increment either counters in methodOop or in MDO depending if we're profiling or not. | |
305 if (TieredCompilation) { | |
306 int increment = InvocationCounter::count_increment; | |
307 int mask = ((1 << Tier0InvokeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
308 Label no_mdo, done; | |
309 if (ProfileInterpreter) { | |
310 // Are we profiling? | |
311 __ movptr(rax, Address(rbx, methodOopDesc::method_data_offset())); | |
312 __ testptr(rax, rax); | |
313 __ jccb(Assembler::zero, no_mdo); | |
314 // Increment counter in the MDO | |
315 const Address mdo_invocation_counter(rax, in_bytes(methodDataOopDesc::invocation_counter_offset()) + | |
316 in_bytes(InvocationCounter::counter_offset())); | |
317 __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rcx, false, Assembler::zero, overflow); | |
318 __ jmpb(done); | |
319 } | |
320 __ bind(no_mdo); | |
321 // Increment counter in methodOop (we don't need to load it, it's in ecx). | |
322 __ increment_mask_and_jump(invocation_counter, increment, mask, rcx, true, Assembler::zero, overflow); | |
323 __ bind(done); | |
324 } else { | |
325 const Address backedge_counter(rbx, | |
326 methodOopDesc::backedge_counter_offset() + | |
0 | 327 InvocationCounter::counter_offset()); |
328 | |
1783 | 329 if (ProfileInterpreter) { // %%% Merge this into methodDataOop |
330 __ incrementl(Address(rbx, | |
331 methodOopDesc::interpreter_invocation_counter_offset())); | |
332 } | |
333 // Update standard invocation counters | |
334 __ movl(rax, backedge_counter); // load backedge counter | |
0 | 335 |
1783 | 336 __ incrementl(rcx, InvocationCounter::count_increment); |
337 __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits | |
0 | 338 |
1783 | 339 __ movl(invocation_counter, rcx); // save invocation count |
340 __ addl(rcx, rax); // add both counters | |
0 | 341 |
1783 | 342 // profile_method is non-null only for interpreted method so |
343 // profile_method != NULL == !native_call | |
344 | |
345 if (ProfileInterpreter && profile_method != NULL) { | |
346 // Test to see if we should create a method data oop | |
347 __ cmp32(rcx, ExternalAddress((address)&InvocationCounter::InterpreterProfileLimit)); | |
348 __ jcc(Assembler::less, *profile_method_continue); | |
0 | 349 |
1783 | 350 // if no method data exists, go to profile_method |
351 __ test_method_data_pointer(rax, *profile_method); | |
352 } | |
353 | |
354 __ cmp32(rcx, ExternalAddress((address)&InvocationCounter::InterpreterInvocationLimit)); | |
355 __ jcc(Assembler::aboveEqual, *overflow); | |
0 | 356 } |
357 } | |
358 | |
359 void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { | |
360 | |
361 // Asm interpreter on entry | |
362 // r14 - locals | |
363 // r13 - bcp | |
364 // rbx - method | |
365 // edx - cpool --- DOES NOT APPEAR TO BE TRUE | |
366 // rbp - interpreter frame | |
367 | |
368 // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] | |
369 // Everything as it was on entry | |
370 // rdx is not restored. Doesn't appear to really be set. | |
371 | |
372 const Address size_of_parameters(rbx, | |
373 methodOopDesc::size_of_parameters_offset()); | |
374 | |
375 // InterpreterRuntime::frequency_counter_overflow takes two | |
376 // arguments, the first (thread) is passed by call_VM, the second | |
377 // indicates if the counter overflow occurs at a backwards branch | |
378 // (NULL bcp). We pass zero for it. The call returns the address | |
379 // of the verified entry point for the method or NULL if the | |
380 // compilation did not complete (either went background or bailed | |
381 // out). | |
382 __ movl(c_rarg1, 0); | |
383 __ call_VM(noreg, | |
384 CAST_FROM_FN_PTR(address, | |
385 InterpreterRuntime::frequency_counter_overflow), | |
386 c_rarg1); | |
387 | |
304 | 388 __ movptr(rbx, Address(rbp, method_offset)); // restore methodOop |
0 | 389 // Preserve invariant that r13/r14 contain bcp/locals of sender frame |
390 // and jump to the interpreted entry. | |
391 __ jmp(*do_continue, relocInfo::none); | |
392 } | |
393 | |
394 // See if we've got enough room on the stack for locals plus overhead. | |
395 // The expression stack grows down incrementally, so the normal guard | |
396 // page mechanism will work for that. | |
397 // | |
398 // NOTE: Since the additional locals are also always pushed (wasn't | |
399 // obvious in generate_method_entry) so the guard should work for them | |
400 // too. | |
401 // | |
402 // Args: | |
403 // rdx: number of additional locals this frame needs (what we must check) | |
404 // rbx: methodOop | |
405 // | |
406 // Kills: | |
407 // rax | |
408 void InterpreterGenerator::generate_stack_overflow_check(void) { | |
409 | |
410 // monitor entry size: see picture of stack set | |
411 // (generate_method_entry) and frame_amd64.hpp | |
412 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
413 | |
414 // total overhead size: entry_size + (saved rbp through expr stack | |
415 // bottom). be sure to change this if you add/subtract anything | |
416 // to/from the overhead area | |
417 const int overhead_size = | |
418 -(frame::interpreter_frame_initial_sp_offset * wordSize) + entry_size; | |
419 | |
420 const int page_size = os::vm_page_size(); | |
421 | |
422 Label after_frame_check; | |
423 | |
424 // see if the frame is greater than one page in size. If so, | |
425 // then we need to verify there is enough stack space remaining | |
426 // for the additional locals. | |
1506 | 427 __ cmpl(rdx, (page_size - overhead_size) / Interpreter::stackElementSize); |
0 | 428 __ jcc(Assembler::belowEqual, after_frame_check); |
429 | |
430 // compute rsp as if this were going to be the last frame on | |
431 // the stack before the red zone | |
432 | |
433 const Address stack_base(r15_thread, Thread::stack_base_offset()); | |
434 const Address stack_size(r15_thread, Thread::stack_size_offset()); | |
435 | |
436 // locals + overhead, in bytes | |
304 | 437 __ mov(rax, rdx); |
1506 | 438 __ shlptr(rax, Interpreter::logStackElementSize); // 2 slots per parameter. |
304 | 439 __ addptr(rax, overhead_size); |
0 | 440 |
441 #ifdef ASSERT | |
442 Label stack_base_okay, stack_size_okay; | |
443 // verify that thread stack base is non-zero | |
304 | 444 __ cmpptr(stack_base, (int32_t)NULL_WORD); |
0 | 445 __ jcc(Assembler::notEqual, stack_base_okay); |
446 __ stop("stack base is zero"); | |
447 __ bind(stack_base_okay); | |
448 // verify that thread stack size is non-zero | |
304 | 449 __ cmpptr(stack_size, 0); |
0 | 450 __ jcc(Assembler::notEqual, stack_size_okay); |
451 __ stop("stack size is zero"); | |
452 __ bind(stack_size_okay); | |
453 #endif | |
454 | |
455 // Add stack base to locals and subtract stack size | |
304 | 456 __ addptr(rax, stack_base); |
457 __ subptr(rax, stack_size); | |
0 | 458 |
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459 // Use the maximum number of pages we might bang. |
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460 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : |
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461 (StackRedPages+StackYellowPages); |
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462 |
0 | 463 // add in the red and yellow zone sizes |
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464 __ addptr(rax, max_pages * page_size); |
0 | 465 |
466 // check against the current stack bottom | |
304 | 467 __ cmpptr(rsp, rax); |
0 | 468 __ jcc(Assembler::above, after_frame_check); |
469 | |
4743 | 470 // Restore sender's sp as SP. This is necessary if the sender's |
471 // frame is an extended compiled frame (see gen_c2i_adapter()) | |
472 // and safer anyway in case of JSR292 adaptations. | |
473 | |
474 __ pop(rax); // return address must be moved if SP is changed | |
475 __ mov(rsp, r13); | |
476 __ push(rax); | |
477 | |
478 // Note: the restored frame is not necessarily interpreted. | |
479 // Use the shared runtime version of the StackOverflowError. | |
480 assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated"); | |
481 __ jump(ExternalAddress(StubRoutines::throw_StackOverflowError_entry())); | |
0 | 482 |
483 // all done with frame size check | |
484 __ bind(after_frame_check); | |
485 } | |
486 | |
487 // Allocate monitor and lock method (asm interpreter) | |
488 // | |
489 // Args: | |
490 // rbx: methodOop | |
491 // r14: locals | |
492 // | |
493 // Kills: | |
494 // rax | |
495 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, ...(param regs) | |
496 // rscratch1, rscratch2 (scratch regs) | |
497 void InterpreterGenerator::lock_method(void) { | |
498 // synchronize method | |
499 const Address access_flags(rbx, methodOopDesc::access_flags_offset()); | |
500 const Address monitor_block_top( | |
501 rbp, | |
502 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
503 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
504 | |
505 #ifdef ASSERT | |
506 { | |
507 Label L; | |
508 __ movl(rax, access_flags); | |
509 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
510 __ jcc(Assembler::notZero, L); | |
511 __ stop("method doesn't need synchronization"); | |
512 __ bind(L); | |
513 } | |
514 #endif // ASSERT | |
515 | |
516 // get synchronization object | |
517 { | |
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518 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
0 | 519 Label done; |
520 __ movl(rax, access_flags); | |
521 __ testl(rax, JVM_ACC_STATIC); | |
522 // get receiver (assume this is frequent case) | |
304 | 523 __ movptr(rax, Address(r14, Interpreter::local_offset_in_bytes(0))); |
0 | 524 __ jcc(Assembler::zero, done); |
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525 __ movptr(rax, Address(rbx, methodOopDesc::const_offset())); |
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526 __ movptr(rax, Address(rax, constMethodOopDesc::constants_offset())); |
304 | 527 __ movptr(rax, Address(rax, |
528 constantPoolOopDesc::pool_holder_offset_in_bytes())); | |
529 __ movptr(rax, Address(rax, mirror_offset)); | |
0 | 530 |
531 #ifdef ASSERT | |
532 { | |
533 Label L; | |
304 | 534 __ testptr(rax, rax); |
0 | 535 __ jcc(Assembler::notZero, L); |
536 __ stop("synchronization object is NULL"); | |
537 __ bind(L); | |
538 } | |
539 #endif // ASSERT | |
540 | |
541 __ bind(done); | |
542 } | |
543 | |
544 // add space for monitor & lock | |
304 | 545 __ subptr(rsp, entry_size); // add space for a monitor entry |
546 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
0 | 547 // store object |
304 | 548 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); |
549 __ movptr(c_rarg1, rsp); // object address | |
0 | 550 __ lock_object(c_rarg1); |
551 } | |
552 | |
553 // Generate a fixed interpreter frame. This is identical setup for | |
554 // interpreted methods and for native methods hence the shared code. | |
555 // | |
556 // Args: | |
557 // rax: return address | |
558 // rbx: methodOop | |
559 // r14: pointer to locals | |
560 // r13: sender sp | |
561 // rdx: cp cache | |
562 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
563 // initialize fixed part of activation frame | |
304 | 564 __ push(rax); // save return address |
0 | 565 __ enter(); // save old & set new rbp |
304 | 566 __ push(r13); // set sender sp |
567 __ push((int)NULL_WORD); // leave last_sp as null | |
568 __ movptr(r13, Address(rbx, methodOopDesc::const_offset())); // get constMethodOop | |
569 __ lea(r13, Address(r13, constMethodOopDesc::codes_offset())); // get codebase | |
570 __ push(rbx); // save methodOop | |
0 | 571 if (ProfileInterpreter) { |
572 Label method_data_continue; | |
304 | 573 __ movptr(rdx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
574 __ testptr(rdx, rdx); | |
0 | 575 __ jcc(Assembler::zero, method_data_continue); |
304 | 576 __ addptr(rdx, in_bytes(methodDataOopDesc::data_offset())); |
0 | 577 __ bind(method_data_continue); |
304 | 578 __ push(rdx); // set the mdp (method data pointer) |
0 | 579 } else { |
304 | 580 __ push(0); |
0 | 581 } |
582 | |
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583 __ movptr(rdx, Address(rbx, methodOopDesc::const_offset())); |
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584 __ movptr(rdx, Address(rdx, constMethodOopDesc::constants_offset())); |
304 | 585 __ movptr(rdx, Address(rdx, constantPoolOopDesc::cache_offset_in_bytes())); |
586 __ push(rdx); // set constant pool cache | |
587 __ push(r14); // set locals pointer | |
0 | 588 if (native_call) { |
304 | 589 __ push(0); // no bcp |
0 | 590 } else { |
304 | 591 __ push(r13); // set bcp |
0 | 592 } |
304 | 593 __ push(0); // reserve word for pointer to expression stack bottom |
594 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
0 | 595 } |
596 | |
597 // End of helpers | |
598 | |
304 | 599 // Various method entries |
600 //------------------------------------------------------------------------------------------------------------------------ | |
601 // | |
602 // | |
603 | |
604 // Call an accessor method (assuming it is resolved, otherwise drop | |
605 // into vanilla (slow path) entry | |
606 address InterpreterGenerator::generate_accessor_entry(void) { | |
607 // rbx: methodOop | |
608 | |
609 // r13: senderSP must preserver for slow path, set SP to it on fast path | |
610 | |
611 address entry_point = __ pc(); | |
612 Label xreturn_path; | |
613 | |
614 // do fastpath for resolved accessor methods | |
615 if (UseFastAccessorMethods) { | |
616 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites | |
617 // thereof; parameter size = 1 | |
618 // Note: We can only use this code if the getfield has been resolved | |
619 // and if we don't have a null-pointer exception => check for | |
620 // these conditions first and use slow path if necessary. | |
621 Label slow_path; | |
622 // If we need a safepoint check, generate full interpreter entry. | |
623 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
624 SafepointSynchronize::_not_synchronized); | |
625 | |
626 __ jcc(Assembler::notEqual, slow_path); | |
627 // rbx: method | |
628 __ movptr(rax, Address(rsp, wordSize)); | |
629 | |
630 // check if local 0 != NULL and read field | |
631 __ testptr(rax, rax); | |
632 __ jcc(Assembler::zero, slow_path); | |
633 | |
634 // read first instruction word and extract bytecode @ 1 and index @ 2 | |
635 __ movptr(rdx, Address(rbx, methodOopDesc::const_offset())); | |
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636 __ movptr(rdi, Address(rdx, constMethodOopDesc::constants_offset())); |
304 | 637 __ movl(rdx, Address(rdx, constMethodOopDesc::codes_offset())); |
638 // Shift codes right to get the index on the right. | |
639 // The bytecode fetched looks like <index><0xb4><0x2a> | |
640 __ shrl(rdx, 2 * BitsPerByte); | |
641 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
642 __ movptr(rdi, Address(rdi, constantPoolOopDesc::cache_offset_in_bytes())); | |
643 | |
644 // rax: local 0 | |
645 // rbx: method | |
646 // rdx: constant pool cache index | |
647 // rdi: constant pool cache | |
648 | |
649 // check if getfield has been resolved and read constant pool cache entry | |
650 // check the validity of the cache entry by testing whether _indices field | |
651 // contains Bytecode::_getfield in b1 byte. | |
652 assert(in_words(ConstantPoolCacheEntry::size()) == 4, | |
653 "adjust shift below"); | |
654 __ movl(rcx, | |
655 Address(rdi, | |
656 rdx, | |
657 Address::times_8, | |
658 constantPoolCacheOopDesc::base_offset() + | |
659 ConstantPoolCacheEntry::indices_offset())); | |
660 __ shrl(rcx, 2 * BitsPerByte); | |
661 __ andl(rcx, 0xFF); | |
662 __ cmpl(rcx, Bytecodes::_getfield); | |
663 __ jcc(Assembler::notEqual, slow_path); | |
664 | |
665 // Note: constant pool entry is not valid before bytecode is resolved | |
666 __ movptr(rcx, | |
667 Address(rdi, | |
668 rdx, | |
669 Address::times_8, | |
670 constantPoolCacheOopDesc::base_offset() + | |
671 ConstantPoolCacheEntry::f2_offset())); | |
672 // edx: flags | |
673 __ movl(rdx, | |
674 Address(rdi, | |
675 rdx, | |
676 Address::times_8, | |
677 constantPoolCacheOopDesc::base_offset() + | |
678 ConstantPoolCacheEntry::flags_offset())); | |
679 | |
680 Label notObj, notInt, notByte, notShort; | |
681 const Address field_address(rax, rcx, Address::times_1); | |
682 | |
683 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
684 // because they are different sizes. | |
685 // Use the type from the constant pool cache | |
686 __ shrl(rdx, ConstantPoolCacheEntry::tosBits); | |
687 // Make sure we don't need to mask edx for tosBits after the above shift | |
688 ConstantPoolCacheEntry::verify_tosBits(); | |
689 | |
690 __ cmpl(rdx, atos); | |
691 __ jcc(Assembler::notEqual, notObj); | |
692 // atos | |
693 __ load_heap_oop(rax, field_address); | |
694 __ jmp(xreturn_path); | |
695 | |
696 __ bind(notObj); | |
697 __ cmpl(rdx, itos); | |
698 __ jcc(Assembler::notEqual, notInt); | |
699 // itos | |
700 __ movl(rax, field_address); | |
701 __ jmp(xreturn_path); | |
702 | |
703 __ bind(notInt); | |
704 __ cmpl(rdx, btos); | |
705 __ jcc(Assembler::notEqual, notByte); | |
706 // btos | |
707 __ load_signed_byte(rax, field_address); | |
708 __ jmp(xreturn_path); | |
709 | |
710 __ bind(notByte); | |
711 __ cmpl(rdx, stos); | |
712 __ jcc(Assembler::notEqual, notShort); | |
713 // stos | |
622
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714 __ load_signed_short(rax, field_address); |
304 | 715 __ jmp(xreturn_path); |
716 | |
717 __ bind(notShort); | |
718 #ifdef ASSERT | |
719 Label okay; | |
720 __ cmpl(rdx, ctos); | |
721 __ jcc(Assembler::equal, okay); | |
722 __ stop("what type is this?"); | |
723 __ bind(okay); | |
724 #endif | |
725 // ctos | |
622
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726 __ load_unsigned_short(rax, field_address); |
304 | 727 |
728 __ bind(xreturn_path); | |
729 | |
730 // _ireturn/_areturn | |
731 __ pop(rdi); | |
732 __ mov(rsp, r13); | |
733 __ jmp(rdi); | |
734 __ ret(0); | |
735 | |
736 // generate a vanilla interpreter entry as the slow path | |
737 __ bind(slow_path); | |
738 (void) generate_normal_entry(false); | |
739 } else { | |
740 (void) generate_normal_entry(false); | |
741 } | |
742 | |
743 return entry_point; | |
744 } | |
745 | |
3249
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746 // Method entry for java.lang.ref.Reference.get. |
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747 address InterpreterGenerator::generate_Reference_get_entry(void) { |
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748 #ifndef SERIALGC |
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749 // Code: _aload_0, _getfield, _areturn |
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750 // parameter size = 1 |
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751 // |
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752 // The code that gets generated by this routine is split into 2 parts: |
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753 // 1. The "intrinsified" code for G1 (or any SATB based GC), |
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754 // 2. The slow path - which is an expansion of the regular method entry. |
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755 // |
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756 // Notes:- |
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757 // * In the G1 code we do not check whether we need to block for |
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758 // a safepoint. If G1 is enabled then we must execute the specialized |
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759 // code for Reference.get (except when the Reference object is null) |
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760 // so that we can log the value in the referent field with an SATB |
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761 // update buffer. |
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762 // If the code for the getfield template is modified so that the |
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763 // G1 pre-barrier code is executed when the current method is |
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764 // Reference.get() then going through the normal method entry |
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765 // will be fine. |
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766 // * The G1 code can, however, check the receiver object (the instance |
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767 // of java.lang.Reference) and jump to the slow path if null. If the |
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768 // Reference object is null then we obviously cannot fetch the referent |
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769 // and so we don't need to call the G1 pre-barrier. Thus we can use the |
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770 // regular method entry code to generate the NPE. |
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771 // |
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772 // This code is based on generate_accessor_enty. |
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773 // |
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774 // rbx: methodOop |
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775 |
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776 // r13: senderSP must preserve for slow path, set SP to it on fast path |
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777 |
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778 address entry = __ pc(); |
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779 |
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780 const int referent_offset = java_lang_ref_Reference::referent_offset; |
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781 guarantee(referent_offset > 0, "referent offset not initialized"); |
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782 |
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783 if (UseG1GC) { |
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784 Label slow_path; |
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785 // rbx: method |
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786 |
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787 // Check if local 0 != NULL |
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788 // If the receiver is null then it is OK to jump to the slow path. |
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789 __ movptr(rax, Address(rsp, wordSize)); |
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790 |
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791 __ testptr(rax, rax); |
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792 __ jcc(Assembler::zero, slow_path); |
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793 |
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794 // rax: local 0 |
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795 // rbx: method (but can be used as scratch now) |
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796 // rdx: scratch |
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797 // rdi: scratch |
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798 |
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799 // Generate the G1 pre-barrier code to log the value of |
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800 // the referent field in an SATB buffer. |
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801 |
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802 // Load the value of the referent field. |
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803 const Address field_address(rax, referent_offset); |
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804 __ load_heap_oop(rax, field_address); |
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805 |
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806 // Generate the G1 pre-barrier code to log the value of |
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807 // the referent field in an SATB buffer. |
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808 __ g1_write_barrier_pre(noreg /* obj */, |
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809 rax /* pre_val */, |
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810 r15_thread /* thread */, |
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811 rbx /* tmp */, |
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812 true /* tosca_live */, |
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813 true /* expand_call */); |
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814 |
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815 // _areturn |
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816 __ pop(rdi); // get return address |
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817 __ mov(rsp, r13); // set sp to sender sp |
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818 __ jmp(rdi); |
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819 __ ret(0); |
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820 |
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821 // generate a vanilla interpreter entry as the slow path |
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822 __ bind(slow_path); |
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823 (void) generate_normal_entry(false); |
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824 |
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825 return entry; |
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826 } |
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827 #endif // SERIALGC |
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828 |
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829 // If G1 is not enabled then attempt to go through the accessor entry point |
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830 // Reference.get is an accessor |
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831 return generate_accessor_entry(); |
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832 } |
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833 |
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834 |
0 | 835 // Interpreter stub for calling a native method. (asm interpreter) |
836 // This sets up a somewhat different looking stack for calling the | |
837 // native method than the typical interpreter frame setup. | |
838 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
839 // determine code generation flags | |
840 bool inc_counter = UseCompiler || CountCompiledCalls; | |
841 | |
842 // rbx: methodOop | |
843 // r13: sender sp | |
844 | |
845 address entry_point = __ pc(); | |
846 | |
847 const Address size_of_parameters(rbx, methodOopDesc:: | |
848 size_of_parameters_offset()); | |
849 const Address invocation_counter(rbx, methodOopDesc:: | |
850 invocation_counter_offset() + | |
851 InvocationCounter::counter_offset()); | |
852 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
853 | |
854 // get parameter size (always needed) | |
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855 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 856 |
857 // native calls don't need the stack size check since they have no | |
858 // expression stack and the arguments are already on the stack and | |
859 // we only add a handful of words to the stack | |
860 | |
861 // rbx: methodOop | |
862 // rcx: size of parameters | |
863 // r13: sender sp | |
304 | 864 __ pop(rax); // get return address |
0 | 865 |
866 // for natives the size of locals is zero | |
867 | |
868 // compute beginning of parameters (r14) | |
304 | 869 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
0 | 870 |
871 // add 2 zero-initialized slots for native calls | |
872 // initialize result_handler slot | |
304 | 873 __ push((int) NULL_WORD); |
0 | 874 // slot for oop temp |
875 // (static native method holder mirror/jni oop result) | |
304 | 876 __ push((int) NULL_WORD); |
0 | 877 |
878 if (inc_counter) { | |
879 __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
880 } | |
881 | |
882 // initialize fixed part of activation frame | |
883 generate_fixed_frame(true); | |
884 | |
885 // make sure method is native & not abstract | |
886 #ifdef ASSERT | |
887 __ movl(rax, access_flags); | |
888 { | |
889 Label L; | |
890 __ testl(rax, JVM_ACC_NATIVE); | |
891 __ jcc(Assembler::notZero, L); | |
892 __ stop("tried to execute non-native method as native"); | |
893 __ bind(L); | |
894 } | |
895 { | |
896 Label L; | |
897 __ testl(rax, JVM_ACC_ABSTRACT); | |
898 __ jcc(Assembler::zero, L); | |
899 __ stop("tried to execute abstract method in interpreter"); | |
900 __ bind(L); | |
901 } | |
902 #endif | |
903 | |
904 // Since at this point in the method invocation the exception handler | |
905 // would try to exit the monitor of synchronized methods which hasn't | |
906 // been entered yet, we set the thread local variable | |
907 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
908 // check this flag. | |
909 | |
910 const Address do_not_unlock_if_synchronized(r15_thread, | |
911 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
912 __ movbool(do_not_unlock_if_synchronized, true); | |
913 | |
914 // increment invocation count & check for overflow | |
915 Label invocation_counter_overflow; | |
916 if (inc_counter) { | |
917 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
918 } | |
919 | |
920 Label continue_after_compile; | |
921 __ bind(continue_after_compile); | |
922 | |
923 bang_stack_shadow_pages(true); | |
924 | |
925 // reset the _do_not_unlock_if_synchronized flag | |
926 __ movbool(do_not_unlock_if_synchronized, false); | |
927 | |
928 // check for synchronized methods | |
929 // Must happen AFTER invocation_counter check and stack overflow check, | |
930 // so method is not locked if overflows. | |
931 if (synchronized) { | |
932 lock_method(); | |
933 } else { | |
934 // no synchronization necessary | |
935 #ifdef ASSERT | |
936 { | |
937 Label L; | |
938 __ movl(rax, access_flags); | |
939 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
940 __ jcc(Assembler::zero, L); | |
941 __ stop("method needs synchronization"); | |
942 __ bind(L); | |
943 } | |
944 #endif | |
945 } | |
946 | |
947 // start execution | |
948 #ifdef ASSERT | |
949 { | |
950 Label L; | |
951 const Address monitor_block_top(rbp, | |
952 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 953 __ movptr(rax, monitor_block_top); |
954 __ cmpptr(rax, rsp); | |
0 | 955 __ jcc(Assembler::equal, L); |
956 __ stop("broken stack frame setup in interpreter"); | |
957 __ bind(L); | |
958 } | |
959 #endif | |
960 | |
961 // jvmti support | |
962 __ notify_method_entry(); | |
963 | |
964 // work registers | |
965 const Register method = rbx; | |
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966 const Register t = r11; |
0 | 967 |
968 // allocate space for parameters | |
969 __ get_method(method); | |
970 __ verify_oop(method); | |
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971 __ load_unsigned_short(t, |
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972 Address(method, |
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973 methodOopDesc::size_of_parameters_offset())); |
1506 | 974 __ shll(t, Interpreter::logStackElementSize); |
0 | 975 |
304 | 976 __ subptr(rsp, t); |
977 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows | |
605 | 978 __ andptr(rsp, -16); // must be 16 byte boundary (see amd64 ABI) |
0 | 979 |
980 // get signature handler | |
981 { | |
982 Label L; | |
304 | 983 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
984 __ testptr(t, t); | |
0 | 985 __ jcc(Assembler::notZero, L); |
986 __ call_VM(noreg, | |
987 CAST_FROM_FN_PTR(address, | |
988 InterpreterRuntime::prepare_native_call), | |
989 method); | |
990 __ get_method(method); | |
304 | 991 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
0 | 992 __ bind(L); |
993 } | |
994 | |
995 // call signature handler | |
996 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == r14, | |
997 "adjust this code"); | |
998 assert(InterpreterRuntime::SignatureHandlerGenerator::to() == rsp, | |
999 "adjust this code"); | |
1000 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == rscratch1, | |
1001 "adjust this code"); | |
1002 | |
1003 // The generated handlers do not touch RBX (the method oop). | |
1004 // However, large signatures cannot be cached and are generated | |
1005 // each time here. The slow-path generator can do a GC on return, | |
1006 // so we must reload it after the call. | |
1007 __ call(t); | |
1008 __ get_method(method); // slow path can do a GC, reload RBX | |
1009 | |
1010 | |
1011 // result handler is in rax | |
1012 // set result handler | |
304 | 1013 __ movptr(Address(rbp, |
1014 (frame::interpreter_frame_result_handler_offset) * wordSize), | |
1015 rax); | |
0 | 1016 |
1017 // pass mirror handle if static call | |
1018 { | |
1019 Label L; | |
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1020 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
0 | 1021 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); |
1022 __ testl(t, JVM_ACC_STATIC); | |
1023 __ jcc(Assembler::zero, L); | |
1024 // get mirror | |
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1025 __ movptr(t, Address(method, methodOopDesc::const_offset())); |
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1026 __ movptr(t, Address(t, constMethodOopDesc::constants_offset())); |
304 | 1027 __ movptr(t, Address(t, constantPoolOopDesc::pool_holder_offset_in_bytes())); |
1028 __ movptr(t, Address(t, mirror_offset)); | |
0 | 1029 // copy mirror into activation frame |
304 | 1030 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), |
0 | 1031 t); |
1032 // pass handle to mirror | |
304 | 1033 __ lea(c_rarg1, |
1034 Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); | |
0 | 1035 __ bind(L); |
1036 } | |
1037 | |
1038 // get native function entry point | |
1039 { | |
1040 Label L; | |
304 | 1041 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
0 | 1042 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
1043 __ movptr(rscratch2, unsatisfied.addr()); | |
304 | 1044 __ cmpptr(rax, rscratch2); |
0 | 1045 __ jcc(Assembler::notEqual, L); |
1046 __ call_VM(noreg, | |
1047 CAST_FROM_FN_PTR(address, | |
1048 InterpreterRuntime::prepare_native_call), | |
1049 method); | |
1050 __ get_method(method); | |
1051 __ verify_oop(method); | |
304 | 1052 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
0 | 1053 __ bind(L); |
1054 } | |
1055 | |
1056 // pass JNIEnv | |
304 | 1057 __ lea(c_rarg0, Address(r15_thread, JavaThread::jni_environment_offset())); |
0 | 1058 |
1059 // It is enough that the pc() points into the right code | |
1060 // segment. It does not have to be the correct return pc. | |
1061 __ set_last_Java_frame(rsp, rbp, (address) __ pc()); | |
1062 | |
1063 // change thread state | |
1064 #ifdef ASSERT | |
1065 { | |
1066 Label L; | |
1067 __ movl(t, Address(r15_thread, JavaThread::thread_state_offset())); | |
1068 __ cmpl(t, _thread_in_Java); | |
1069 __ jcc(Assembler::equal, L); | |
1070 __ stop("Wrong thread state in native stub"); | |
1071 __ bind(L); | |
1072 } | |
1073 #endif | |
1074 | |
1075 // Change state to native | |
1076 | |
1077 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
1078 _thread_in_native); | |
1079 | |
1080 // Call the native method. | |
1081 __ call(rax); | |
1082 // result potentially in rax or xmm0 | |
1083 | |
1084 // Depending on runtime options, either restore the MXCSR | |
1085 // register after returning from the JNI Call or verify that | |
1086 // it wasn't changed during -Xcheck:jni. | |
1087 if (RestoreMXCSROnJNICalls) { | |
304 | 1088 __ ldmxcsr(ExternalAddress(StubRoutines::x86::mxcsr_std())); |
0 | 1089 } |
1090 else if (CheckJNICalls) { | |
304 | 1091 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, StubRoutines::x86::verify_mxcsr_entry()))); |
0 | 1092 } |
1093 | |
1094 // NOTE: The order of these pushes is known to frame::interpreter_frame_result | |
1095 // in order to extract the result of a method call. If the order of these | |
1096 // pushes change or anything else is added to the stack then the code in | |
1097 // interpreter_frame_result must also change. | |
1098 | |
1099 __ push(dtos); | |
1100 __ push(ltos); | |
1101 | |
1102 // change thread state | |
1103 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
1104 _thread_in_native_trans); | |
1105 | |
1106 if (os::is_MP()) { | |
1107 if (UseMembar) { | |
1108 // Force this write out before the read below | |
1109 __ membar(Assembler::Membar_mask_bits( | |
1110 Assembler::LoadLoad | Assembler::LoadStore | | |
1111 Assembler::StoreLoad | Assembler::StoreStore)); | |
1112 } else { | |
1113 // Write serialization page so VM thread can do a pseudo remote membar. | |
1114 // We use the current thread pointer to calculate a thread specific | |
1115 // offset to write to within the page. This minimizes bus traffic | |
1116 // due to cache line collision. | |
1117 __ serialize_memory(r15_thread, rscratch2); | |
1118 } | |
1119 } | |
1120 | |
1121 // check for safepoint operation in progress and/or pending suspend requests | |
1122 { | |
1123 Label Continue; | |
1124 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
1125 SafepointSynchronize::_not_synchronized); | |
1126 | |
1127 Label L; | |
1128 __ jcc(Assembler::notEqual, L); | |
1129 __ cmpl(Address(r15_thread, JavaThread::suspend_flags_offset()), 0); | |
1130 __ jcc(Assembler::equal, Continue); | |
1131 __ bind(L); | |
1132 | |
1133 // Don't use call_VM as it will see a possible pending exception | |
1134 // and forward it and never return here preventing us from | |
1135 // clearing _last_native_pc down below. Also can't use | |
1136 // call_VM_leaf either as it will check to see if r13 & r14 are | |
1137 // preserved and correspond to the bcp/locals pointers. So we do a | |
1138 // runtime call by hand. | |
1139 // | |
304 | 1140 __ mov(c_rarg0, r15_thread); |
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1141 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1142 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
1143 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1144 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans))); |
304 | 1145 __ mov(rsp, r12); // restore sp |
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1146 __ reinit_heapbase(); |
0 | 1147 __ bind(Continue); |
1148 } | |
1149 | |
1150 // change thread state | |
1151 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
1152 | |
1153 // reset_last_Java_frame | |
1154 __ reset_last_Java_frame(true, true); | |
1155 | |
1156 // reset handle block | |
304 | 1157 __ movptr(t, Address(r15_thread, JavaThread::active_handles_offset())); |
1158 __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD); | |
0 | 1159 |
1160 // If result is an oop unbox and store it in frame where gc will see it | |
1161 // and result handler will pick it up | |
1162 | |
1163 { | |
1164 Label no_oop, store_result; | |
1165 __ lea(t, ExternalAddress(AbstractInterpreter::result_handler(T_OBJECT))); | |
304 | 1166 __ cmpptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
0 | 1167 __ jcc(Assembler::notEqual, no_oop); |
1168 // retrieve result | |
1169 __ pop(ltos); | |
304 | 1170 __ testptr(rax, rax); |
0 | 1171 __ jcc(Assembler::zero, store_result); |
304 | 1172 __ movptr(rax, Address(rax, 0)); |
0 | 1173 __ bind(store_result); |
304 | 1174 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize), rax); |
0 | 1175 // keep stack depth as expected by pushing oop which will eventually be discarde |
1176 __ push(ltos); | |
1177 __ bind(no_oop); | |
1178 } | |
1179 | |
1180 | |
1181 { | |
1182 Label no_reguard; | |
1183 __ cmpl(Address(r15_thread, JavaThread::stack_guard_state_offset()), | |
1184 JavaThread::stack_guard_yellow_disabled); | |
1185 __ jcc(Assembler::notEqual, no_reguard); | |
1186 | |
304 | 1187 __ pusha(); // XXX only save smashed registers |
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1188 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1189 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
1190 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1191 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
304 | 1192 __ mov(rsp, r12); // restore sp |
1193 __ popa(); // XXX only restore smashed registers | |
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1194 __ reinit_heapbase(); |
0 | 1195 |
1196 __ bind(no_reguard); | |
1197 } | |
1198 | |
1199 | |
1200 // The method register is junk from after the thread_in_native transition | |
1201 // until here. Also can't call_VM until the bcp has been | |
1202 // restored. Need bcp for throwing exception below so get it now. | |
1203 __ get_method(method); | |
1204 __ verify_oop(method); | |
1205 | |
1206 // restore r13 to have legal interpreter frame, i.e., bci == 0 <=> | |
1207 // r13 == code_base() | |
304 | 1208 __ movptr(r13, Address(method, methodOopDesc::const_offset())); // get constMethodOop |
1209 __ lea(r13, Address(r13, constMethodOopDesc::codes_offset())); // get codebase | |
0 | 1210 // handle exceptions (exception handling will handle unlocking!) |
1211 { | |
1212 Label L; | |
304 | 1213 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
0 | 1214 __ jcc(Assembler::zero, L); |
1215 // Note: At some point we may want to unify this with the code | |
1216 // used in call_VM_base(); i.e., we should use the | |
1217 // StubRoutines::forward_exception code. For now this doesn't work | |
1218 // here because the rsp is not correctly set at this point. | |
1219 __ MacroAssembler::call_VM(noreg, | |
1220 CAST_FROM_FN_PTR(address, | |
1221 InterpreterRuntime::throw_pending_exception)); | |
1222 __ should_not_reach_here(); | |
1223 __ bind(L); | |
1224 } | |
1225 | |
1226 // do unlocking if necessary | |
1227 { | |
1228 Label L; | |
1229 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); | |
1230 __ testl(t, JVM_ACC_SYNCHRONIZED); | |
1231 __ jcc(Assembler::zero, L); | |
1232 // the code below should be shared with interpreter macro | |
1233 // assembler implementation | |
1234 { | |
1235 Label unlock; | |
1236 // BasicObjectLock will be first in list, since this is a | |
1237 // synchronized method. However, need to check that the object | |
1238 // has not been unlocked by an explicit monitorexit bytecode. | |
1239 const Address monitor(rbp, | |
1240 (intptr_t)(frame::interpreter_frame_initial_sp_offset * | |
1241 wordSize - sizeof(BasicObjectLock))); | |
1242 | |
1243 // monitor expect in c_rarg1 for slow unlock path | |
304 | 1244 __ lea(c_rarg1, monitor); // address of first monitor |
0 | 1245 |
304 | 1246 __ movptr(t, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
1247 __ testptr(t, t); | |
0 | 1248 __ jcc(Assembler::notZero, unlock); |
1249 | |
1250 // Entry already unlocked, need to throw exception | |
1251 __ MacroAssembler::call_VM(noreg, | |
1252 CAST_FROM_FN_PTR(address, | |
1253 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
1254 __ should_not_reach_here(); | |
1255 | |
1256 __ bind(unlock); | |
1257 __ unlock_object(c_rarg1); | |
1258 } | |
1259 __ bind(L); | |
1260 } | |
1261 | |
1262 // jvmti support | |
1263 // Note: This must happen _after_ handling/throwing any exceptions since | |
1264 // the exception handler code notifies the runtime of method exits | |
1265 // too. If this happens before, method entry/exit notifications are | |
1266 // not properly paired (was bug - gri 11/22/99). | |
1267 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
1268 | |
1269 // restore potential result in edx:eax, call result handler to | |
1270 // restore potential result in ST0 & handle result | |
1271 | |
1272 __ pop(ltos); | |
1273 __ pop(dtos); | |
1274 | |
304 | 1275 __ movptr(t, Address(rbp, |
1276 (frame::interpreter_frame_result_handler_offset) * wordSize)); | |
0 | 1277 __ call(t); |
1278 | |
1279 // remove activation | |
304 | 1280 __ movptr(t, Address(rbp, |
1281 frame::interpreter_frame_sender_sp_offset * | |
1282 wordSize)); // get sender sp | |
0 | 1283 __ leave(); // remove frame anchor |
304 | 1284 __ pop(rdi); // get return address |
1285 __ mov(rsp, t); // set sp to sender sp | |
0 | 1286 __ jmp(rdi); |
1287 | |
1288 if (inc_counter) { | |
1289 // Handle overflow of counter and compile method | |
1290 __ bind(invocation_counter_overflow); | |
1291 generate_counter_overflow(&continue_after_compile); | |
1292 } | |
1293 | |
1294 return entry_point; | |
1295 } | |
1296 | |
1297 // | |
1298 // Generic interpreted method entry to (asm) interpreter | |
1299 // | |
1300 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
1301 // determine code generation flags | |
1302 bool inc_counter = UseCompiler || CountCompiledCalls; | |
1303 | |
1304 // ebx: methodOop | |
1305 // r13: sender sp | |
1306 address entry_point = __ pc(); | |
1307 | |
1308 const Address size_of_parameters(rbx, | |
1309 methodOopDesc::size_of_parameters_offset()); | |
1310 const Address size_of_locals(rbx, methodOopDesc::size_of_locals_offset()); | |
1311 const Address invocation_counter(rbx, | |
1312 methodOopDesc::invocation_counter_offset() + | |
1313 InvocationCounter::counter_offset()); | |
1314 const Address access_flags(rbx, methodOopDesc::access_flags_offset()); | |
1315 | |
1316 // get parameter size (always needed) | |
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1317 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 1318 |
1319 // rbx: methodOop | |
1320 // rcx: size of parameters | |
1321 // r13: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
1322 | |
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1323 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
0 | 1324 __ subl(rdx, rcx); // rdx = no. of additional locals |
1325 | |
1326 // YYY | |
1327 // __ incrementl(rdx); | |
1328 // __ andl(rdx, -2); | |
1329 | |
1330 // see if we've got enough room on the stack for locals plus overhead. | |
1331 generate_stack_overflow_check(); | |
1332 | |
1333 // get return address | |
304 | 1334 __ pop(rax); |
0 | 1335 |
1336 // compute beginning of parameters (r14) | |
304 | 1337 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
0 | 1338 |
1339 // rdx - # of additional locals | |
1340 // allocate space for locals | |
1341 // explicitly initialize locals | |
1342 { | |
1343 Label exit, loop; | |
1344 __ testl(rdx, rdx); | |
1345 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 | |
1346 __ bind(loop); | |
304 | 1347 __ push((int) NULL_WORD); // initialize local variables |
0 | 1348 __ decrementl(rdx); // until everything initialized |
1349 __ jcc(Assembler::greater, loop); | |
1350 __ bind(exit); | |
1351 } | |
1352 | |
1353 // (pre-)fetch invocation count | |
1354 if (inc_counter) { | |
1355 __ movl(rcx, invocation_counter); | |
1356 } | |
1357 // initialize fixed part of activation frame | |
1358 generate_fixed_frame(false); | |
1359 | |
1360 // make sure method is not native & not abstract | |
1361 #ifdef ASSERT | |
1362 __ movl(rax, access_flags); | |
1363 { | |
1364 Label L; | |
1365 __ testl(rax, JVM_ACC_NATIVE); | |
1366 __ jcc(Assembler::zero, L); | |
1367 __ stop("tried to execute native method as non-native"); | |
1368 __ bind(L); | |
1369 } | |
1370 { | |
1371 Label L; | |
1372 __ testl(rax, JVM_ACC_ABSTRACT); | |
1373 __ jcc(Assembler::zero, L); | |
1374 __ stop("tried to execute abstract method in interpreter"); | |
1375 __ bind(L); | |
1376 } | |
1377 #endif | |
1378 | |
1379 // Since at this point in the method invocation the exception | |
1380 // handler would try to exit the monitor of synchronized methods | |
1381 // which hasn't been entered yet, we set the thread local variable | |
1382 // _do_not_unlock_if_synchronized to true. The remove_activation | |
1383 // will check this flag. | |
1384 | |
1385 const Address do_not_unlock_if_synchronized(r15_thread, | |
1386 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
1387 __ movbool(do_not_unlock_if_synchronized, true); | |
1388 | |
1389 // increment invocation count & check for overflow | |
1390 Label invocation_counter_overflow; | |
1391 Label profile_method; | |
1392 Label profile_method_continue; | |
1393 if (inc_counter) { | |
1394 generate_counter_incr(&invocation_counter_overflow, | |
1395 &profile_method, | |
1396 &profile_method_continue); | |
1397 if (ProfileInterpreter) { | |
1398 __ bind(profile_method_continue); | |
1399 } | |
1400 } | |
1401 | |
1402 Label continue_after_compile; | |
1403 __ bind(continue_after_compile); | |
1404 | |
1405 // check for synchronized interpreted methods | |
1406 bang_stack_shadow_pages(false); | |
1407 | |
1408 // reset the _do_not_unlock_if_synchronized flag | |
1409 __ movbool(do_not_unlock_if_synchronized, false); | |
1410 | |
1411 // check for synchronized methods | |
1412 // Must happen AFTER invocation_counter check and stack overflow check, | |
1413 // so method is not locked if overflows. | |
1414 if (synchronized) { | |
1415 // Allocate monitor and lock method | |
1416 lock_method(); | |
1417 } else { | |
1418 // no synchronization necessary | |
1419 #ifdef ASSERT | |
1420 { | |
1421 Label L; | |
1422 __ movl(rax, access_flags); | |
1423 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
1424 __ jcc(Assembler::zero, L); | |
1425 __ stop("method needs synchronization"); | |
1426 __ bind(L); | |
1427 } | |
1428 #endif | |
1429 } | |
1430 | |
1431 // start execution | |
1432 #ifdef ASSERT | |
1433 { | |
1434 Label L; | |
1435 const Address monitor_block_top (rbp, | |
1436 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 1437 __ movptr(rax, monitor_block_top); |
1438 __ cmpptr(rax, rsp); | |
0 | 1439 __ jcc(Assembler::equal, L); |
1440 __ stop("broken stack frame setup in interpreter"); | |
1441 __ bind(L); | |
1442 } | |
1443 #endif | |
1444 | |
1445 // jvmti support | |
1446 __ notify_method_entry(); | |
1447 | |
1448 __ dispatch_next(vtos); | |
1449 | |
1450 // invocation counter overflow | |
1451 if (inc_counter) { | |
1452 if (ProfileInterpreter) { | |
1453 // We have decided to profile this method in the interpreter | |
1454 __ bind(profile_method); | |
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1455 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
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1456 __ set_method_data_pointer_for_bcp(); |
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1457 __ get_method(rbx); |
0 | 1458 __ jmp(profile_method_continue); |
1459 } | |
1460 // Handle overflow of counter and compile method | |
1461 __ bind(invocation_counter_overflow); | |
1462 generate_counter_overflow(&continue_after_compile); | |
1463 } | |
1464 | |
1465 return entry_point; | |
1466 } | |
1467 | |
1468 // Entry points | |
1469 // | |
1470 // Here we generate the various kind of entries into the interpreter. | |
1471 // The two main entry type are generic bytecode methods and native | |
1472 // call method. These both come in synchronized and non-synchronized | |
1473 // versions but the frame layout they create is very similar. The | |
1474 // other method entry types are really just special purpose entries | |
1475 // that are really entry and interpretation all in one. These are for | |
1476 // trivial methods like accessor, empty, or special math methods. | |
1477 // | |
1478 // When control flow reaches any of the entry types for the interpreter | |
1479 // the following holds -> | |
1480 // | |
1481 // Arguments: | |
1482 // | |
1483 // rbx: methodOop | |
1484 // | |
1485 // Stack layout immediately at entry | |
1486 // | |
1487 // [ return address ] <--- rsp | |
1488 // [ parameter n ] | |
1489 // ... | |
1490 // [ parameter 1 ] | |
1491 // [ expression stack ] (caller's java expression stack) | |
1492 | |
1493 // Assuming that we don't go to one of the trivial specialized entries | |
1494 // the stack will look like below when we are ready to execute the | |
1495 // first bytecode (or call the native routine). The register usage | |
1496 // will be as the template based interpreter expects (see | |
1497 // interpreter_amd64.hpp). | |
1498 // | |
1499 // local variables follow incoming parameters immediately; i.e. | |
1500 // the return address is moved to the end of the locals). | |
1501 // | |
1502 // [ monitor entry ] <--- rsp | |
1503 // ... | |
1504 // [ monitor entry ] | |
1505 // [ expr. stack bottom ] | |
1506 // [ saved r13 ] | |
1507 // [ current r14 ] | |
1508 // [ methodOop ] | |
1509 // [ saved ebp ] <--- rbp | |
1510 // [ return address ] | |
1511 // [ local variable m ] | |
1512 // ... | |
1513 // [ local variable 1 ] | |
1514 // [ parameter n ] | |
1515 // ... | |
1516 // [ parameter 1 ] <--- r14 | |
1517 | |
1518 address AbstractInterpreterGenerator::generate_method_entry( | |
1519 AbstractInterpreter::MethodKind kind) { | |
1520 // determine code generation flags | |
1521 bool synchronized = false; | |
1522 address entry_point = NULL; | |
1523 | |
1524 switch (kind) { | |
1525 case Interpreter::zerolocals : break; | |
1526 case Interpreter::zerolocals_synchronized: synchronized = true; break; | |
1527 case Interpreter::native : entry_point = ((InterpreterGenerator*) this)->generate_native_entry(false); break; | |
1528 case Interpreter::native_synchronized : entry_point = ((InterpreterGenerator*) this)->generate_native_entry(true); break; | |
1529 case Interpreter::empty : entry_point = ((InterpreterGenerator*) this)->generate_empty_entry(); break; | |
1530 case Interpreter::accessor : entry_point = ((InterpreterGenerator*) this)->generate_accessor_entry(); break; | |
1531 case Interpreter::abstract : entry_point = ((InterpreterGenerator*) this)->generate_abstract_entry(); break; | |
710 | 1532 case Interpreter::method_handle : entry_point = ((InterpreterGenerator*) this)->generate_method_handle_entry();break; |
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1533 |
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1534 case Interpreter::java_lang_math_sin : // fall thru |
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1535 case Interpreter::java_lang_math_cos : // fall thru |
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1536 case Interpreter::java_lang_math_tan : // fall thru |
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1537 case Interpreter::java_lang_math_abs : // fall thru |
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1538 case Interpreter::java_lang_math_log : // fall thru |
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1539 case Interpreter::java_lang_math_log10 : // fall thru |
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1540 case Interpreter::java_lang_math_sqrt : // fall thru |
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1541 case Interpreter::java_lang_math_pow : // fall thru |
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1542 case Interpreter::java_lang_math_exp : entry_point = ((InterpreterGenerator*) this)->generate_math_entry(kind); break; |
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1543 case Interpreter::java_lang_ref_reference_get |
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1544 : entry_point = ((InterpreterGenerator*)this)->generate_Reference_get_entry(); break; |
0 | 1545 default : ShouldNotReachHere(); break; |
1546 } | |
1547 | |
1548 if (entry_point) { | |
1549 return entry_point; | |
1550 } | |
1551 | |
1552 return ((InterpreterGenerator*) this)-> | |
1553 generate_normal_entry(synchronized); | |
1554 } | |
1555 | |
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1556 // These should never be compiled since the interpreter will prefer |
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1557 // the compiled version to the intrinsic version. |
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1558 bool AbstractInterpreter::can_be_compiled(methodHandle m) { |
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1559 switch (method_kind(m)) { |
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1560 case Interpreter::java_lang_math_sin : // fall thru |
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1561 case Interpreter::java_lang_math_cos : // fall thru |
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1562 case Interpreter::java_lang_math_tan : // fall thru |
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1563 case Interpreter::java_lang_math_abs : // fall thru |
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1564 case Interpreter::java_lang_math_log : // fall thru |
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1565 case Interpreter::java_lang_math_log10 : // fall thru |
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1566 case Interpreter::java_lang_math_sqrt : // fall thru |
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1567 case Interpreter::java_lang_math_pow : // fall thru |
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1568 case Interpreter::java_lang_math_exp : |
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1569 return false; |
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1570 default: |
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1571 return true; |
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1572 } |
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1573 } |
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1574 |
0 | 1575 // How much stack a method activation needs in words. |
1576 int AbstractInterpreter::size_top_interpreter_activation(methodOop method) { | |
1577 const int entry_size = frame::interpreter_frame_monitor_size(); | |
1578 | |
1579 // total overhead size: entry_size + (saved rbp thru expr stack | |
1580 // bottom). be sure to change this if you add/subtract anything | |
1581 // to/from the overhead area | |
1582 const int overhead_size = | |
1583 -(frame::interpreter_frame_initial_sp_offset) + entry_size; | |
1584 | |
1585 const int stub_code = frame::entry_frame_after_call_words; | |
710 | 1586 const int extra_stack = methodOopDesc::extra_stack_entries(); |
1587 const int method_stack = (method->max_locals() + method->max_stack() + extra_stack) * | |
1506 | 1588 Interpreter::stackElementWords; |
0 | 1589 return (overhead_size + method_stack + stub_code); |
1590 } | |
1591 | |
1592 int AbstractInterpreter::layout_activation(methodOop method, | |
1593 int tempcount, | |
1594 int popframe_extra_args, | |
1595 int moncount, | |
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1596 int caller_actual_parameters, |
0 | 1597 int callee_param_count, |
1598 int callee_locals, | |
1599 frame* caller, | |
1600 frame* interpreter_frame, | |
1601 bool is_top_frame) { | |
1602 // Note: This calculation must exactly parallel the frame setup | |
1603 // in AbstractInterpreterGenerator::generate_method_entry. | |
1604 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
1605 // The frame interpreter_frame, if not NULL, is guaranteed to be the | |
1606 // right size, as determined by a previous call to this method. | |
1607 // It is also guaranteed to be walkable even though it is in a skeletal state | |
1608 | |
1609 // fixed size of an interpreter frame: | |
1506 | 1610 int max_locals = method->max_locals() * Interpreter::stackElementWords; |
0 | 1611 int extra_locals = (method->max_locals() - method->size_of_parameters()) * |
1506 | 1612 Interpreter::stackElementWords; |
0 | 1613 |
1614 int overhead = frame::sender_sp_offset - | |
1615 frame::interpreter_frame_initial_sp_offset; | |
1616 // Our locals were accounted for by the caller (or last_frame_adjust | |
1617 // on the transistion) Since the callee parameters already account | |
1618 // for the callee's params we only need to account for the extra | |
1619 // locals. | |
1620 int size = overhead + | |
1506 | 1621 (callee_locals - callee_param_count)*Interpreter::stackElementWords + |
0 | 1622 moncount * frame::interpreter_frame_monitor_size() + |
1506 | 1623 tempcount* Interpreter::stackElementWords + popframe_extra_args; |
0 | 1624 if (interpreter_frame != NULL) { |
1625 #ifdef ASSERT | |
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1626 if (!EnableInvokeDynamic) |
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1627 // @@@ FIXME: Should we correct interpreter_frame_sender_sp in the calling sequences? |
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1628 // Probably, since deoptimization doesn't work yet. |
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1629 assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable"); |
0 | 1630 assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)"); |
1631 #endif | |
1632 | |
1633 interpreter_frame->interpreter_frame_set_method(method); | |
1634 // NOTE the difference in using sender_sp and | |
1635 // interpreter_frame_sender_sp interpreter_frame_sender_sp is | |
1636 // the original sp of the caller (the unextended_sp) and | |
1637 // sender_sp is fp+16 XXX | |
1638 intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; | |
1639 | |
4042
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1640 #ifdef ASSERT |
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1641 if (caller->is_interpreted_frame()) { |
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1642 assert(locals < caller->fp() + frame::interpreter_frame_initial_sp_offset, "bad placement"); |
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1643 } |
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1644 #endif |
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1645 |
0 | 1646 interpreter_frame->interpreter_frame_set_locals(locals); |
1647 BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); | |
1648 BasicObjectLock* monbot = montop - moncount; | |
1649 interpreter_frame->interpreter_frame_set_monitor_end(monbot); | |
1650 | |
1651 // Set last_sp | |
1652 intptr_t* esp = (intptr_t*) monbot - | |
1506 | 1653 tempcount*Interpreter::stackElementWords - |
0 | 1654 popframe_extra_args; |
1655 interpreter_frame->interpreter_frame_set_last_sp(esp); | |
1656 | |
1657 // All frames but the initial (oldest) interpreter frame we fill in have | |
1658 // a value for sender_sp that allows walking the stack but isn't | |
1659 // truly correct. Correct the value here. | |
1660 if (extra_locals != 0 && | |
1661 interpreter_frame->sender_sp() == | |
1662 interpreter_frame->interpreter_frame_sender_sp()) { | |
1663 interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + | |
1664 extra_locals); | |
1665 } | |
1666 *interpreter_frame->interpreter_frame_cache_addr() = | |
1667 method->constants()->cache(); | |
1668 } | |
1669 return size; | |
1670 } | |
1671 | |
1672 //----------------------------------------------------------------------------- | |
1673 // Exceptions | |
1674 | |
1675 void TemplateInterpreterGenerator::generate_throw_exception() { | |
1676 // Entry point in previous activation (i.e., if the caller was | |
1677 // interpreted) | |
1678 Interpreter::_rethrow_exception_entry = __ pc(); | |
1679 // Restore sp to interpreter_frame_last_sp even though we are going | |
1680 // to empty the expression stack for the exception processing. | |
304 | 1681 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 1682 // rax: exception |
1683 // rdx: return address/pc that threw exception | |
1684 __ restore_bcp(); // r13 points to call/send | |
1685 __ restore_locals(); | |
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1686 __ reinit_heapbase(); // restore r12 as heapbase. |
0 | 1687 // Entry point for exceptions thrown within interpreter code |
1688 Interpreter::_throw_exception_entry = __ pc(); | |
1689 // expression stack is undefined here | |
1690 // rax: exception | |
1691 // r13: exception bcp | |
1692 __ verify_oop(rax); | |
304 | 1693 __ mov(c_rarg1, rax); |
0 | 1694 |
1695 // expression stack must be empty before entering the VM in case of | |
1696 // an exception | |
1697 __ empty_expression_stack(); | |
1698 // find exception handler address and preserve exception oop | |
1699 __ call_VM(rdx, | |
1700 CAST_FROM_FN_PTR(address, | |
1701 InterpreterRuntime::exception_handler_for_exception), | |
1702 c_rarg1); | |
1703 // rax: exception handler entry point | |
1704 // rdx: preserved exception oop | |
1705 // r13: bcp for exception handler | |
1706 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
1707 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
1708 | |
1709 // If the exception is not handled in the current frame the frame is | |
1710 // removed and the exception is rethrown (i.e. exception | |
1711 // continuation is _rethrow_exception). | |
1712 // | |
1713 // Note: At this point the bci is still the bxi for the instruction | |
1714 // which caused the exception and the expression stack is | |
1715 // empty. Thus, for any VM calls at this point, GC will find a legal | |
1716 // oop map (with empty expression stack). | |
1717 | |
1718 // In current activation | |
1719 // tos: exception | |
1720 // esi: exception bcp | |
1721 | |
1722 // | |
1723 // JVMTI PopFrame support | |
1724 // | |
1725 | |
1726 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
1727 __ empty_expression_stack(); | |
1728 // Set the popframe_processing bit in pending_popframe_condition | |
1729 // indicating that we are currently handling popframe, so that | |
1730 // call_VMs that may happen later do not trigger new popframe | |
1731 // handling cycles. | |
1732 __ movl(rdx, Address(r15_thread, JavaThread::popframe_condition_offset())); | |
1733 __ orl(rdx, JavaThread::popframe_processing_bit); | |
1734 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), rdx); | |
1735 | |
1736 { | |
1737 // Check to see whether we are returning to a deoptimized frame. | |
1738 // (The PopFrame call ensures that the caller of the popped frame is | |
1739 // either interpreted or compiled and deoptimizes it if compiled.) | |
1740 // In this case, we can't call dispatch_next() after the frame is | |
1741 // popped, but instead must save the incoming arguments and restore | |
1742 // them after deoptimization has occurred. | |
1743 // | |
1744 // Note that we don't compare the return PC against the | |
1745 // deoptimization blob's unpack entry because of the presence of | |
1746 // adapter frames in C2. | |
1747 Label caller_not_deoptimized; | |
304 | 1748 __ movptr(c_rarg1, Address(rbp, frame::return_addr_offset * wordSize)); |
0 | 1749 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
1750 InterpreterRuntime::interpreter_contains), c_rarg1); | |
1751 __ testl(rax, rax); | |
1752 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
1753 | |
1754 // Compute size of arguments for saving when returning to | |
1755 // deoptimized caller | |
1756 __ get_method(rax); | |
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1757 __ load_unsigned_short(rax, Address(rax, in_bytes(methodOopDesc:: |
0 | 1758 size_of_parameters_offset()))); |
1506 | 1759 __ shll(rax, Interpreter::logStackElementSize); |
0 | 1760 __ restore_locals(); // XXX do we need this? |
304 | 1761 __ subptr(r14, rax); |
1762 __ addptr(r14, wordSize); | |
0 | 1763 // Save these arguments |
1764 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, | |
1765 Deoptimization:: | |
1766 popframe_preserve_args), | |
1767 r15_thread, rax, r14); | |
1768 | |
1769 __ remove_activation(vtos, rdx, | |
1770 /* throw_monitor_exception */ false, | |
1771 /* install_monitor_exception */ false, | |
1772 /* notify_jvmdi */ false); | |
1773 | |
1774 // Inform deoptimization that it is responsible for restoring | |
1775 // these arguments | |
1776 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
1777 JavaThread::popframe_force_deopt_reexecution_bit); | |
1778 | |
1779 // Continue in deoptimization handler | |
1780 __ jmp(rdx); | |
1781 | |
1782 __ bind(caller_not_deoptimized); | |
1783 } | |
1784 | |
1785 __ remove_activation(vtos, rdx, /* rdx result (retaddr) is not used */ | |
1786 /* throw_monitor_exception */ false, | |
1787 /* install_monitor_exception */ false, | |
1788 /* notify_jvmdi */ false); | |
1789 | |
1790 // Finish with popframe handling | |
1791 // A previous I2C followed by a deoptimization might have moved the | |
1792 // outgoing arguments further up the stack. PopFrame expects the | |
1793 // mutations to those outgoing arguments to be preserved and other | |
1794 // constraints basically require this frame to look exactly as | |
1795 // though it had previously invoked an interpreted activation with | |
1796 // no space between the top of the expression stack (current | |
1797 // last_sp) and the top of stack. Rather than force deopt to | |
1798 // maintain this kind of invariant all the time we call a small | |
1799 // fixup routine to move the mutated arguments onto the top of our | |
1800 // expression stack if necessary. | |
304 | 1801 __ mov(c_rarg1, rsp); |
1802 __ movptr(c_rarg2, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
0 | 1803 // PC must point into interpreter here |
1804 __ set_last_Java_frame(noreg, rbp, __ pc()); | |
1805 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), r15_thread, c_rarg1, c_rarg2); | |
1806 __ reset_last_Java_frame(true, true); | |
1807 // Restore the last_sp and null it out | |
304 | 1808 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
1809 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); | |
0 | 1810 |
1811 __ restore_bcp(); // XXX do we need this? | |
1812 __ restore_locals(); // XXX do we need this? | |
1813 // The method data pointer was incremented already during | |
1814 // call profiling. We have to restore the mdp for the current bcp. | |
1815 if (ProfileInterpreter) { | |
1816 __ set_method_data_pointer_for_bcp(); | |
1817 } | |
1818 | |
1819 // Clear the popframe condition flag | |
1820 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
1821 JavaThread::popframe_inactive); | |
1822 | |
1823 __ dispatch_next(vtos); | |
1824 // end of PopFrame support | |
1825 | |
1826 Interpreter::_remove_activation_entry = __ pc(); | |
1827 | |
1828 // preserve exception over this code sequence | |
1829 __ pop_ptr(rax); | |
304 | 1830 __ movptr(Address(r15_thread, JavaThread::vm_result_offset()), rax); |
0 | 1831 // remove the activation (without doing throws on illegalMonitorExceptions) |
1832 __ remove_activation(vtos, rdx, false, true, false); | |
1833 // restore exception | |
304 | 1834 __ movptr(rax, Address(r15_thread, JavaThread::vm_result_offset())); |
1835 __ movptr(Address(r15_thread, JavaThread::vm_result_offset()), (int32_t)NULL_WORD); | |
0 | 1836 __ verify_oop(rax); |
1837 | |
1838 // In between activations - previous activation type unknown yet | |
1839 // compute continuation point - the continuation point expects the | |
1840 // following registers set up: | |
1841 // | |
1842 // rax: exception | |
1843 // rdx: return address/pc that threw exception | |
1844 // rsp: expression stack of caller | |
1845 // rbp: ebp of caller | |
304 | 1846 __ push(rax); // save exception |
1847 __ push(rdx); // save return address | |
0 | 1848 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
1849 SharedRuntime::exception_handler_for_return_address), | |
1295 | 1850 r15_thread, rdx); |
304 | 1851 __ mov(rbx, rax); // save exception handler |
1852 __ pop(rdx); // restore return address | |
1853 __ pop(rax); // restore exception | |
0 | 1854 // Note that an "issuing PC" is actually the next PC after the call |
1855 __ jmp(rbx); // jump to exception | |
1856 // handler of caller | |
1857 } | |
1858 | |
1859 | |
1860 // | |
1861 // JVMTI ForceEarlyReturn support | |
1862 // | |
1863 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
1864 address entry = __ pc(); | |
1865 | |
1866 __ restore_bcp(); | |
1867 __ restore_locals(); | |
1868 __ empty_expression_stack(); | |
1869 __ load_earlyret_value(state); | |
1870 | |
304 | 1871 __ movptr(rdx, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
0 | 1872 Address cond_addr(rdx, JvmtiThreadState::earlyret_state_offset()); |
1873 | |
1874 // Clear the earlyret state | |
1875 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
1876 | |
1877 __ remove_activation(state, rsi, | |
1878 false, /* throw_monitor_exception */ | |
1879 false, /* install_monitor_exception */ | |
1880 true); /* notify_jvmdi */ | |
1881 __ jmp(rsi); | |
1882 | |
1883 return entry; | |
1884 } // end of ForceEarlyReturn support | |
1885 | |
1886 | |
1887 //----------------------------------------------------------------------------- | |
1888 // Helper for vtos entry point generation | |
1889 | |
1890 void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t, | |
1891 address& bep, | |
1892 address& cep, | |
1893 address& sep, | |
1894 address& aep, | |
1895 address& iep, | |
1896 address& lep, | |
1897 address& fep, | |
1898 address& dep, | |
1899 address& vep) { | |
1900 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
1901 Label L; | |
1902 aep = __ pc(); __ push_ptr(); __ jmp(L); | |
1903 fep = __ pc(); __ push_f(); __ jmp(L); | |
1904 dep = __ pc(); __ push_d(); __ jmp(L); | |
1905 lep = __ pc(); __ push_l(); __ jmp(L); | |
1906 bep = cep = sep = | |
1907 iep = __ pc(); __ push_i(); | |
1908 vep = __ pc(); | |
1909 __ bind(L); | |
1910 generate_and_dispatch(t); | |
1911 } | |
1912 | |
1913 | |
1914 //----------------------------------------------------------------------------- | |
1915 // Generation of individual instructions | |
1916 | |
1917 // helpers for generate_and_dispatch | |
1918 | |
1919 | |
1920 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
1921 : TemplateInterpreterGenerator(code) { | |
1922 generate_all(); // down here so it can be "virtual" | |
1923 } | |
1924 | |
1925 //----------------------------------------------------------------------------- | |
1926 | |
1927 // Non-product code | |
1928 #ifndef PRODUCT | |
1929 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
1930 address entry = __ pc(); | |
1931 | |
1932 __ push(state); | |
304 | 1933 __ push(c_rarg0); |
1934 __ push(c_rarg1); | |
1935 __ push(c_rarg2); | |
1936 __ push(c_rarg3); | |
1937 __ mov(c_rarg2, rax); // Pass itos | |
0 | 1938 #ifdef _WIN64 |
1939 __ movflt(xmm3, xmm0); // Pass ftos | |
1940 #endif | |
1941 __ call_VM(noreg, | |
1942 CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), | |
1943 c_rarg1, c_rarg2, c_rarg3); | |
304 | 1944 __ pop(c_rarg3); |
1945 __ pop(c_rarg2); | |
1946 __ pop(c_rarg1); | |
1947 __ pop(c_rarg0); | |
0 | 1948 __ pop(state); |
1949 __ ret(0); // return from result handler | |
1950 | |
1951 return entry; | |
1952 } | |
1953 | |
1954 void TemplateInterpreterGenerator::count_bytecode() { | |
1955 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); | |
1956 } | |
1957 | |
1958 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
1959 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); | |
1960 } | |
1961 | |
1962 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
1963 __ mov32(rbx, ExternalAddress((address) &BytecodePairHistogram::_index)); | |
1964 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
1965 __ orl(rbx, | |
1966 ((int) t->bytecode()) << | |
1967 BytecodePairHistogram::log2_number_of_codes); | |
1968 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
1969 __ lea(rscratch1, ExternalAddress((address) BytecodePairHistogram::_counters)); | |
1970 __ incrementl(Address(rscratch1, rbx, Address::times_4)); | |
1971 } | |
1972 | |
1973 | |
1974 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
1975 // Call a little run-time stub to avoid blow-up for each bytecode. | |
1976 // The run-time runtime saves the right registers, depending on | |
1977 // the tosca in-state for the given template. | |
1978 | |
1979 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
1980 "entry must have been generated"); | |
1976
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1981 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1982 __ andptr(rsp, -16); // align stack as required by ABI |
0 | 1983 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); |
304 | 1984 __ mov(rsp, r12); // restore sp |
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1985 __ reinit_heapbase(); |
0 | 1986 } |
1987 | |
1988 | |
1989 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
1990 Label L; | |
1991 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
1992 StopInterpreterAt); | |
1993 __ jcc(Assembler::notEqual, L); | |
1994 __ int3(); | |
1995 __ bind(L); | |
1996 } | |
1997 #endif // !PRODUCT | |
304 | 1998 #endif // ! CC_INTERP |