Mercurial > hg > graal-compiler
annotate src/cpu/x86/vm/templateInterpreter_x86_64.cpp @ 6033:4e6554041847
Added tag hs24-b09 for changeset 7d5ec8bf38d1
author | amurillo |
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date | Fri, 04 May 2012 14:10:31 -0700 |
parents | 22cee0ee8927 |
children | f3d2447db2d9 6759698e3140 |
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 "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); |
304 | 525 __ movptr(rax, Address(rbx, methodOopDesc::constants_offset())); |
526 __ movptr(rax, Address(rax, | |
527 constantPoolOopDesc::pool_holder_offset_in_bytes())); | |
528 __ movptr(rax, Address(rax, mirror_offset)); | |
0 | 529 |
530 #ifdef ASSERT | |
531 { | |
532 Label L; | |
304 | 533 __ testptr(rax, rax); |
0 | 534 __ jcc(Assembler::notZero, L); |
535 __ stop("synchronization object is NULL"); | |
536 __ bind(L); | |
537 } | |
538 #endif // ASSERT | |
539 | |
540 __ bind(done); | |
541 } | |
542 | |
543 // add space for monitor & lock | |
304 | 544 __ subptr(rsp, entry_size); // add space for a monitor entry |
545 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
0 | 546 // store object |
304 | 547 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); |
548 __ movptr(c_rarg1, rsp); // object address | |
0 | 549 __ lock_object(c_rarg1); |
550 } | |
551 | |
552 // Generate a fixed interpreter frame. This is identical setup for | |
553 // interpreted methods and for native methods hence the shared code. | |
554 // | |
555 // Args: | |
556 // rax: return address | |
557 // rbx: methodOop | |
558 // r14: pointer to locals | |
559 // r13: sender sp | |
560 // rdx: cp cache | |
561 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
562 // initialize fixed part of activation frame | |
304 | 563 __ push(rax); // save return address |
0 | 564 __ enter(); // save old & set new rbp |
304 | 565 __ push(r13); // set sender sp |
566 __ push((int)NULL_WORD); // leave last_sp as null | |
567 __ movptr(r13, Address(rbx, methodOopDesc::const_offset())); // get constMethodOop | |
568 __ lea(r13, Address(r13, constMethodOopDesc::codes_offset())); // get codebase | |
569 __ push(rbx); // save methodOop | |
0 | 570 if (ProfileInterpreter) { |
571 Label method_data_continue; | |
304 | 572 __ movptr(rdx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
573 __ testptr(rdx, rdx); | |
0 | 574 __ jcc(Assembler::zero, method_data_continue); |
304 | 575 __ addptr(rdx, in_bytes(methodDataOopDesc::data_offset())); |
0 | 576 __ bind(method_data_continue); |
304 | 577 __ push(rdx); // set the mdp (method data pointer) |
0 | 578 } else { |
304 | 579 __ push(0); |
0 | 580 } |
581 | |
304 | 582 __ movptr(rdx, Address(rbx, methodOopDesc::constants_offset())); |
583 __ movptr(rdx, Address(rdx, constantPoolOopDesc::cache_offset_in_bytes())); | |
584 __ push(rdx); // set constant pool cache | |
585 __ push(r14); // set locals pointer | |
0 | 586 if (native_call) { |
304 | 587 __ push(0); // no bcp |
0 | 588 } else { |
304 | 589 __ push(r13); // set bcp |
0 | 590 } |
304 | 591 __ push(0); // reserve word for pointer to expression stack bottom |
592 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
0 | 593 } |
594 | |
595 // End of helpers | |
596 | |
304 | 597 // Various method entries |
598 //------------------------------------------------------------------------------------------------------------------------ | |
599 // | |
600 // | |
601 | |
602 // Call an accessor method (assuming it is resolved, otherwise drop | |
603 // into vanilla (slow path) entry | |
604 address InterpreterGenerator::generate_accessor_entry(void) { | |
605 // rbx: methodOop | |
606 | |
607 // r13: senderSP must preserver for slow path, set SP to it on fast path | |
608 | |
609 address entry_point = __ pc(); | |
610 Label xreturn_path; | |
611 | |
612 // do fastpath for resolved accessor methods | |
613 if (UseFastAccessorMethods) { | |
614 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites | |
615 // thereof; parameter size = 1 | |
616 // Note: We can only use this code if the getfield has been resolved | |
617 // and if we don't have a null-pointer exception => check for | |
618 // these conditions first and use slow path if necessary. | |
619 Label slow_path; | |
620 // If we need a safepoint check, generate full interpreter entry. | |
621 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
622 SafepointSynchronize::_not_synchronized); | |
623 | |
624 __ jcc(Assembler::notEqual, slow_path); | |
625 // rbx: method | |
626 __ movptr(rax, Address(rsp, wordSize)); | |
627 | |
628 // check if local 0 != NULL and read field | |
629 __ testptr(rax, rax); | |
630 __ jcc(Assembler::zero, slow_path); | |
631 | |
632 __ movptr(rdi, Address(rbx, methodOopDesc::constants_offset())); | |
633 // read first instruction word and extract bytecode @ 1 and index @ 2 | |
634 __ movptr(rdx, Address(rbx, methodOopDesc::const_offset())); | |
635 __ movl(rdx, Address(rdx, constMethodOopDesc::codes_offset())); | |
636 // Shift codes right to get the index on the right. | |
637 // The bytecode fetched looks like <index><0xb4><0x2a> | |
638 __ shrl(rdx, 2 * BitsPerByte); | |
639 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
640 __ movptr(rdi, Address(rdi, constantPoolOopDesc::cache_offset_in_bytes())); | |
641 | |
642 // rax: local 0 | |
643 // rbx: method | |
644 // rdx: constant pool cache index | |
645 // rdi: constant pool cache | |
646 | |
647 // check if getfield has been resolved and read constant pool cache entry | |
648 // check the validity of the cache entry by testing whether _indices field | |
649 // contains Bytecode::_getfield in b1 byte. | |
650 assert(in_words(ConstantPoolCacheEntry::size()) == 4, | |
651 "adjust shift below"); | |
652 __ movl(rcx, | |
653 Address(rdi, | |
654 rdx, | |
655 Address::times_8, | |
656 constantPoolCacheOopDesc::base_offset() + | |
657 ConstantPoolCacheEntry::indices_offset())); | |
658 __ shrl(rcx, 2 * BitsPerByte); | |
659 __ andl(rcx, 0xFF); | |
660 __ cmpl(rcx, Bytecodes::_getfield); | |
661 __ jcc(Assembler::notEqual, slow_path); | |
662 | |
663 // Note: constant pool entry is not valid before bytecode is resolved | |
664 __ movptr(rcx, | |
665 Address(rdi, | |
666 rdx, | |
667 Address::times_8, | |
668 constantPoolCacheOopDesc::base_offset() + | |
669 ConstantPoolCacheEntry::f2_offset())); | |
670 // edx: flags | |
671 __ movl(rdx, | |
672 Address(rdi, | |
673 rdx, | |
674 Address::times_8, | |
675 constantPoolCacheOopDesc::base_offset() + | |
676 ConstantPoolCacheEntry::flags_offset())); | |
677 | |
678 Label notObj, notInt, notByte, notShort; | |
679 const Address field_address(rax, rcx, Address::times_1); | |
680 | |
681 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
682 // because they are different sizes. | |
683 // Use the type from the constant pool cache | |
684 __ shrl(rdx, ConstantPoolCacheEntry::tosBits); | |
685 // Make sure we don't need to mask edx for tosBits after the above shift | |
686 ConstantPoolCacheEntry::verify_tosBits(); | |
687 | |
688 __ cmpl(rdx, atos); | |
689 __ jcc(Assembler::notEqual, notObj); | |
690 // atos | |
691 __ load_heap_oop(rax, field_address); | |
692 __ jmp(xreturn_path); | |
693 | |
694 __ bind(notObj); | |
695 __ cmpl(rdx, itos); | |
696 __ jcc(Assembler::notEqual, notInt); | |
697 // itos | |
698 __ movl(rax, field_address); | |
699 __ jmp(xreturn_path); | |
700 | |
701 __ bind(notInt); | |
702 __ cmpl(rdx, btos); | |
703 __ jcc(Assembler::notEqual, notByte); | |
704 // btos | |
705 __ load_signed_byte(rax, field_address); | |
706 __ jmp(xreturn_path); | |
707 | |
708 __ bind(notByte); | |
709 __ cmpl(rdx, stos); | |
710 __ jcc(Assembler::notEqual, notShort); | |
711 // stos | |
622
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712 __ load_signed_short(rax, field_address); |
304 | 713 __ jmp(xreturn_path); |
714 | |
715 __ bind(notShort); | |
716 #ifdef ASSERT | |
717 Label okay; | |
718 __ cmpl(rdx, ctos); | |
719 __ jcc(Assembler::equal, okay); | |
720 __ stop("what type is this?"); | |
721 __ bind(okay); | |
722 #endif | |
723 // ctos | |
622
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724 __ load_unsigned_short(rax, field_address); |
304 | 725 |
726 __ bind(xreturn_path); | |
727 | |
728 // _ireturn/_areturn | |
729 __ pop(rdi); | |
730 __ mov(rsp, r13); | |
731 __ jmp(rdi); | |
732 __ ret(0); | |
733 | |
734 // generate a vanilla interpreter entry as the slow path | |
735 __ bind(slow_path); | |
736 (void) generate_normal_entry(false); | |
737 } else { | |
738 (void) generate_normal_entry(false); | |
739 } | |
740 | |
741 return entry_point; | |
742 } | |
743 | |
3249
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744 // Method entry for java.lang.ref.Reference.get. |
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745 address InterpreterGenerator::generate_Reference_get_entry(void) { |
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746 #ifndef SERIALGC |
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747 // Code: _aload_0, _getfield, _areturn |
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748 // parameter size = 1 |
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749 // |
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750 // The code that gets generated by this routine is split into 2 parts: |
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751 // 1. The "intrinsified" code for G1 (or any SATB based GC), |
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752 // 2. The slow path - which is an expansion of the regular method entry. |
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753 // |
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754 // Notes:- |
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755 // * In the G1 code we do not check whether we need to block for |
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756 // a safepoint. If G1 is enabled then we must execute the specialized |
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757 // code for Reference.get (except when the Reference object is null) |
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758 // so that we can log the value in the referent field with an SATB |
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759 // update buffer. |
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760 // If the code for the getfield template is modified so that the |
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761 // G1 pre-barrier code is executed when the current method is |
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762 // Reference.get() then going through the normal method entry |
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763 // will be fine. |
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764 // * The G1 code can, however, check the receiver object (the instance |
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765 // of java.lang.Reference) and jump to the slow path if null. If the |
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766 // Reference object is null then we obviously cannot fetch the referent |
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767 // and so we don't need to call the G1 pre-barrier. Thus we can use the |
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768 // regular method entry code to generate the NPE. |
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769 // |
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770 // This code is based on generate_accessor_enty. |
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771 // |
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772 // rbx: methodOop |
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773 |
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774 // r13: senderSP must preserve for slow path, set SP to it on fast path |
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775 |
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776 address entry = __ pc(); |
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777 |
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778 const int referent_offset = java_lang_ref_Reference::referent_offset; |
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779 guarantee(referent_offset > 0, "referent offset not initialized"); |
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780 |
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781 if (UseG1GC) { |
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782 Label slow_path; |
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783 // rbx: method |
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784 |
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785 // Check if local 0 != NULL |
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786 // If the receiver is null then it is OK to jump to the slow path. |
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787 __ movptr(rax, Address(rsp, wordSize)); |
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788 |
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789 __ testptr(rax, rax); |
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790 __ jcc(Assembler::zero, slow_path); |
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791 |
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792 // rax: local 0 |
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793 // rbx: method (but can be used as scratch now) |
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794 // rdx: scratch |
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795 // rdi: scratch |
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796 |
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797 // Generate the G1 pre-barrier code to log the value of |
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798 // the referent field in an SATB buffer. |
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799 |
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800 // Load the value of the referent field. |
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801 const Address field_address(rax, referent_offset); |
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802 __ load_heap_oop(rax, field_address); |
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803 |
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804 // Generate the G1 pre-barrier code to log the value of |
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805 // the referent field in an SATB buffer. |
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806 __ g1_write_barrier_pre(noreg /* obj */, |
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807 rax /* pre_val */, |
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808 r15_thread /* thread */, |
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809 rbx /* tmp */, |
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810 true /* tosca_live */, |
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811 true /* expand_call */); |
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812 |
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813 // _areturn |
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814 __ pop(rdi); // get return address |
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815 __ mov(rsp, r13); // set sp to sender sp |
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816 __ jmp(rdi); |
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817 __ ret(0); |
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818 |
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819 // generate a vanilla interpreter entry as the slow path |
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820 __ bind(slow_path); |
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821 (void) generate_normal_entry(false); |
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822 |
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823 return entry; |
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824 } |
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825 #endif // SERIALGC |
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826 |
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827 // If G1 is not enabled then attempt to go through the accessor entry point |
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828 // Reference.get is an accessor |
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829 return generate_accessor_entry(); |
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830 } |
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831 |
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832 |
0 | 833 // Interpreter stub for calling a native method. (asm interpreter) |
834 // This sets up a somewhat different looking stack for calling the | |
835 // native method than the typical interpreter frame setup. | |
836 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
837 // determine code generation flags | |
838 bool inc_counter = UseCompiler || CountCompiledCalls; | |
839 | |
840 // rbx: methodOop | |
841 // r13: sender sp | |
842 | |
843 address entry_point = __ pc(); | |
844 | |
845 const Address size_of_parameters(rbx, methodOopDesc:: | |
846 size_of_parameters_offset()); | |
847 const Address invocation_counter(rbx, methodOopDesc:: | |
848 invocation_counter_offset() + | |
849 InvocationCounter::counter_offset()); | |
850 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
851 | |
852 // get parameter size (always needed) | |
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853 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 854 |
855 // native calls don't need the stack size check since they have no | |
856 // expression stack and the arguments are already on the stack and | |
857 // we only add a handful of words to the stack | |
858 | |
859 // rbx: methodOop | |
860 // rcx: size of parameters | |
861 // r13: sender sp | |
304 | 862 __ pop(rax); // get return address |
0 | 863 |
864 // for natives the size of locals is zero | |
865 | |
866 // compute beginning of parameters (r14) | |
304 | 867 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
0 | 868 |
869 // add 2 zero-initialized slots for native calls | |
870 // initialize result_handler slot | |
304 | 871 __ push((int) NULL_WORD); |
0 | 872 // slot for oop temp |
873 // (static native method holder mirror/jni oop result) | |
304 | 874 __ push((int) NULL_WORD); |
0 | 875 |
876 if (inc_counter) { | |
877 __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
878 } | |
879 | |
880 // initialize fixed part of activation frame | |
881 generate_fixed_frame(true); | |
882 | |
883 // make sure method is native & not abstract | |
884 #ifdef ASSERT | |
885 __ movl(rax, access_flags); | |
886 { | |
887 Label L; | |
888 __ testl(rax, JVM_ACC_NATIVE); | |
889 __ jcc(Assembler::notZero, L); | |
890 __ stop("tried to execute non-native method as native"); | |
891 __ bind(L); | |
892 } | |
893 { | |
894 Label L; | |
895 __ testl(rax, JVM_ACC_ABSTRACT); | |
896 __ jcc(Assembler::zero, L); | |
897 __ stop("tried to execute abstract method in interpreter"); | |
898 __ bind(L); | |
899 } | |
900 #endif | |
901 | |
902 // Since at this point in the method invocation the exception handler | |
903 // would try to exit the monitor of synchronized methods which hasn't | |
904 // been entered yet, we set the thread local variable | |
905 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
906 // check this flag. | |
907 | |
908 const Address do_not_unlock_if_synchronized(r15_thread, | |
909 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
910 __ movbool(do_not_unlock_if_synchronized, true); | |
911 | |
912 // increment invocation count & check for overflow | |
913 Label invocation_counter_overflow; | |
914 if (inc_counter) { | |
915 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
916 } | |
917 | |
918 Label continue_after_compile; | |
919 __ bind(continue_after_compile); | |
920 | |
921 bang_stack_shadow_pages(true); | |
922 | |
923 // reset the _do_not_unlock_if_synchronized flag | |
924 __ movbool(do_not_unlock_if_synchronized, false); | |
925 | |
926 // check for synchronized methods | |
927 // Must happen AFTER invocation_counter check and stack overflow check, | |
928 // so method is not locked if overflows. | |
929 if (synchronized) { | |
930 lock_method(); | |
931 } else { | |
932 // no synchronization necessary | |
933 #ifdef ASSERT | |
934 { | |
935 Label L; | |
936 __ movl(rax, access_flags); | |
937 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
938 __ jcc(Assembler::zero, L); | |
939 __ stop("method needs synchronization"); | |
940 __ bind(L); | |
941 } | |
942 #endif | |
943 } | |
944 | |
945 // start execution | |
946 #ifdef ASSERT | |
947 { | |
948 Label L; | |
949 const Address monitor_block_top(rbp, | |
950 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 951 __ movptr(rax, monitor_block_top); |
952 __ cmpptr(rax, rsp); | |
0 | 953 __ jcc(Assembler::equal, L); |
954 __ stop("broken stack frame setup in interpreter"); | |
955 __ bind(L); | |
956 } | |
957 #endif | |
958 | |
959 // jvmti support | |
960 __ notify_method_entry(); | |
961 | |
962 // work registers | |
963 const Register method = rbx; | |
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964 const Register t = r11; |
0 | 965 |
966 // allocate space for parameters | |
967 __ get_method(method); | |
968 __ verify_oop(method); | |
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969 __ load_unsigned_short(t, |
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970 Address(method, |
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971 methodOopDesc::size_of_parameters_offset())); |
1506 | 972 __ shll(t, Interpreter::logStackElementSize); |
0 | 973 |
304 | 974 __ subptr(rsp, t); |
975 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows | |
605 | 976 __ andptr(rsp, -16); // must be 16 byte boundary (see amd64 ABI) |
0 | 977 |
978 // get signature handler | |
979 { | |
980 Label L; | |
304 | 981 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
982 __ testptr(t, t); | |
0 | 983 __ jcc(Assembler::notZero, L); |
984 __ call_VM(noreg, | |
985 CAST_FROM_FN_PTR(address, | |
986 InterpreterRuntime::prepare_native_call), | |
987 method); | |
988 __ get_method(method); | |
304 | 989 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
0 | 990 __ bind(L); |
991 } | |
992 | |
993 // call signature handler | |
994 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == r14, | |
995 "adjust this code"); | |
996 assert(InterpreterRuntime::SignatureHandlerGenerator::to() == rsp, | |
997 "adjust this code"); | |
998 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == rscratch1, | |
999 "adjust this code"); | |
1000 | |
1001 // The generated handlers do not touch RBX (the method oop). | |
1002 // However, large signatures cannot be cached and are generated | |
1003 // each time here. The slow-path generator can do a GC on return, | |
1004 // so we must reload it after the call. | |
1005 __ call(t); | |
1006 __ get_method(method); // slow path can do a GC, reload RBX | |
1007 | |
1008 | |
1009 // result handler is in rax | |
1010 // set result handler | |
304 | 1011 __ movptr(Address(rbp, |
1012 (frame::interpreter_frame_result_handler_offset) * wordSize), | |
1013 rax); | |
0 | 1014 |
1015 // pass mirror handle if static call | |
1016 { | |
1017 Label L; | |
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1018 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
0 | 1019 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); |
1020 __ testl(t, JVM_ACC_STATIC); | |
1021 __ jcc(Assembler::zero, L); | |
1022 // get mirror | |
304 | 1023 __ movptr(t, Address(method, methodOopDesc::constants_offset())); |
1024 __ movptr(t, Address(t, constantPoolOopDesc::pool_holder_offset_in_bytes())); | |
1025 __ movptr(t, Address(t, mirror_offset)); | |
0 | 1026 // copy mirror into activation frame |
304 | 1027 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), |
0 | 1028 t); |
1029 // pass handle to mirror | |
304 | 1030 __ lea(c_rarg1, |
1031 Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); | |
0 | 1032 __ bind(L); |
1033 } | |
1034 | |
1035 // get native function entry point | |
1036 { | |
1037 Label L; | |
304 | 1038 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
0 | 1039 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
1040 __ movptr(rscratch2, unsatisfied.addr()); | |
304 | 1041 __ cmpptr(rax, rscratch2); |
0 | 1042 __ jcc(Assembler::notEqual, L); |
1043 __ call_VM(noreg, | |
1044 CAST_FROM_FN_PTR(address, | |
1045 InterpreterRuntime::prepare_native_call), | |
1046 method); | |
1047 __ get_method(method); | |
1048 __ verify_oop(method); | |
304 | 1049 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
0 | 1050 __ bind(L); |
1051 } | |
1052 | |
1053 // pass JNIEnv | |
304 | 1054 __ lea(c_rarg0, Address(r15_thread, JavaThread::jni_environment_offset())); |
0 | 1055 |
1056 // It is enough that the pc() points into the right code | |
1057 // segment. It does not have to be the correct return pc. | |
1058 __ set_last_Java_frame(rsp, rbp, (address) __ pc()); | |
1059 | |
1060 // change thread state | |
1061 #ifdef ASSERT | |
1062 { | |
1063 Label L; | |
1064 __ movl(t, Address(r15_thread, JavaThread::thread_state_offset())); | |
1065 __ cmpl(t, _thread_in_Java); | |
1066 __ jcc(Assembler::equal, L); | |
1067 __ stop("Wrong thread state in native stub"); | |
1068 __ bind(L); | |
1069 } | |
1070 #endif | |
1071 | |
1072 // Change state to native | |
1073 | |
1074 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
1075 _thread_in_native); | |
1076 | |
1077 // Call the native method. | |
1078 __ call(rax); | |
1079 // result potentially in rax or xmm0 | |
1080 | |
1081 // Depending on runtime options, either restore the MXCSR | |
1082 // register after returning from the JNI Call or verify that | |
1083 // it wasn't changed during -Xcheck:jni. | |
1084 if (RestoreMXCSROnJNICalls) { | |
304 | 1085 __ ldmxcsr(ExternalAddress(StubRoutines::x86::mxcsr_std())); |
0 | 1086 } |
1087 else if (CheckJNICalls) { | |
304 | 1088 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, StubRoutines::x86::verify_mxcsr_entry()))); |
0 | 1089 } |
1090 | |
1091 // NOTE: The order of these pushes is known to frame::interpreter_frame_result | |
1092 // in order to extract the result of a method call. If the order of these | |
1093 // pushes change or anything else is added to the stack then the code in | |
1094 // interpreter_frame_result must also change. | |
1095 | |
1096 __ push(dtos); | |
1097 __ push(ltos); | |
1098 | |
1099 // change thread state | |
1100 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
1101 _thread_in_native_trans); | |
1102 | |
1103 if (os::is_MP()) { | |
1104 if (UseMembar) { | |
1105 // Force this write out before the read below | |
1106 __ membar(Assembler::Membar_mask_bits( | |
1107 Assembler::LoadLoad | Assembler::LoadStore | | |
1108 Assembler::StoreLoad | Assembler::StoreStore)); | |
1109 } else { | |
1110 // Write serialization page so VM thread can do a pseudo remote membar. | |
1111 // We use the current thread pointer to calculate a thread specific | |
1112 // offset to write to within the page. This minimizes bus traffic | |
1113 // due to cache line collision. | |
1114 __ serialize_memory(r15_thread, rscratch2); | |
1115 } | |
1116 } | |
1117 | |
1118 // check for safepoint operation in progress and/or pending suspend requests | |
1119 { | |
1120 Label Continue; | |
1121 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
1122 SafepointSynchronize::_not_synchronized); | |
1123 | |
1124 Label L; | |
1125 __ jcc(Assembler::notEqual, L); | |
1126 __ cmpl(Address(r15_thread, JavaThread::suspend_flags_offset()), 0); | |
1127 __ jcc(Assembler::equal, Continue); | |
1128 __ bind(L); | |
1129 | |
1130 // Don't use call_VM as it will see a possible pending exception | |
1131 // and forward it and never return here preventing us from | |
1132 // clearing _last_native_pc down below. Also can't use | |
1133 // call_VM_leaf either as it will check to see if r13 & r14 are | |
1134 // preserved and correspond to the bcp/locals pointers. So we do a | |
1135 // runtime call by hand. | |
1136 // | |
304 | 1137 __ mov(c_rarg0, r15_thread); |
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1138 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1139 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
1140 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1141 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans))); |
304 | 1142 __ mov(rsp, r12); // restore sp |
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1143 __ reinit_heapbase(); |
0 | 1144 __ bind(Continue); |
1145 } | |
1146 | |
1147 // change thread state | |
1148 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
1149 | |
1150 // reset_last_Java_frame | |
1151 __ reset_last_Java_frame(true, true); | |
1152 | |
1153 // reset handle block | |
304 | 1154 __ movptr(t, Address(r15_thread, JavaThread::active_handles_offset())); |
1155 __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD); | |
0 | 1156 |
1157 // If result is an oop unbox and store it in frame where gc will see it | |
1158 // and result handler will pick it up | |
1159 | |
1160 { | |
1161 Label no_oop, store_result; | |
1162 __ lea(t, ExternalAddress(AbstractInterpreter::result_handler(T_OBJECT))); | |
304 | 1163 __ cmpptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
0 | 1164 __ jcc(Assembler::notEqual, no_oop); |
1165 // retrieve result | |
1166 __ pop(ltos); | |
304 | 1167 __ testptr(rax, rax); |
0 | 1168 __ jcc(Assembler::zero, store_result); |
304 | 1169 __ movptr(rax, Address(rax, 0)); |
0 | 1170 __ bind(store_result); |
304 | 1171 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize), rax); |
0 | 1172 // keep stack depth as expected by pushing oop which will eventually be discarde |
1173 __ push(ltos); | |
1174 __ bind(no_oop); | |
1175 } | |
1176 | |
1177 | |
1178 { | |
1179 Label no_reguard; | |
1180 __ cmpl(Address(r15_thread, JavaThread::stack_guard_state_offset()), | |
1181 JavaThread::stack_guard_yellow_disabled); | |
1182 __ jcc(Assembler::notEqual, no_reguard); | |
1183 | |
304 | 1184 __ pusha(); // XXX only save smashed registers |
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1185 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1186 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
1187 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1188 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
304 | 1189 __ mov(rsp, r12); // restore sp |
1190 __ popa(); // XXX only restore smashed registers | |
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1191 __ reinit_heapbase(); |
0 | 1192 |
1193 __ bind(no_reguard); | |
1194 } | |
1195 | |
1196 | |
1197 // The method register is junk from after the thread_in_native transition | |
1198 // until here. Also can't call_VM until the bcp has been | |
1199 // restored. Need bcp for throwing exception below so get it now. | |
1200 __ get_method(method); | |
1201 __ verify_oop(method); | |
1202 | |
1203 // restore r13 to have legal interpreter frame, i.e., bci == 0 <=> | |
1204 // r13 == code_base() | |
304 | 1205 __ movptr(r13, Address(method, methodOopDesc::const_offset())); // get constMethodOop |
1206 __ lea(r13, Address(r13, constMethodOopDesc::codes_offset())); // get codebase | |
0 | 1207 // handle exceptions (exception handling will handle unlocking!) |
1208 { | |
1209 Label L; | |
304 | 1210 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
0 | 1211 __ jcc(Assembler::zero, L); |
1212 // Note: At some point we may want to unify this with the code | |
1213 // used in call_VM_base(); i.e., we should use the | |
1214 // StubRoutines::forward_exception code. For now this doesn't work | |
1215 // here because the rsp is not correctly set at this point. | |
1216 __ MacroAssembler::call_VM(noreg, | |
1217 CAST_FROM_FN_PTR(address, | |
1218 InterpreterRuntime::throw_pending_exception)); | |
1219 __ should_not_reach_here(); | |
1220 __ bind(L); | |
1221 } | |
1222 | |
1223 // do unlocking if necessary | |
1224 { | |
1225 Label L; | |
1226 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); | |
1227 __ testl(t, JVM_ACC_SYNCHRONIZED); | |
1228 __ jcc(Assembler::zero, L); | |
1229 // the code below should be shared with interpreter macro | |
1230 // assembler implementation | |
1231 { | |
1232 Label unlock; | |
1233 // BasicObjectLock will be first in list, since this is a | |
1234 // synchronized method. However, need to check that the object | |
1235 // has not been unlocked by an explicit monitorexit bytecode. | |
1236 const Address monitor(rbp, | |
1237 (intptr_t)(frame::interpreter_frame_initial_sp_offset * | |
1238 wordSize - sizeof(BasicObjectLock))); | |
1239 | |
1240 // monitor expect in c_rarg1 for slow unlock path | |
304 | 1241 __ lea(c_rarg1, monitor); // address of first monitor |
0 | 1242 |
304 | 1243 __ movptr(t, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
1244 __ testptr(t, t); | |
0 | 1245 __ jcc(Assembler::notZero, unlock); |
1246 | |
1247 // Entry already unlocked, need to throw exception | |
1248 __ MacroAssembler::call_VM(noreg, | |
1249 CAST_FROM_FN_PTR(address, | |
1250 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
1251 __ should_not_reach_here(); | |
1252 | |
1253 __ bind(unlock); | |
1254 __ unlock_object(c_rarg1); | |
1255 } | |
1256 __ bind(L); | |
1257 } | |
1258 | |
1259 // jvmti support | |
1260 // Note: This must happen _after_ handling/throwing any exceptions since | |
1261 // the exception handler code notifies the runtime of method exits | |
1262 // too. If this happens before, method entry/exit notifications are | |
1263 // not properly paired (was bug - gri 11/22/99). | |
1264 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
1265 | |
1266 // restore potential result in edx:eax, call result handler to | |
1267 // restore potential result in ST0 & handle result | |
1268 | |
1269 __ pop(ltos); | |
1270 __ pop(dtos); | |
1271 | |
304 | 1272 __ movptr(t, Address(rbp, |
1273 (frame::interpreter_frame_result_handler_offset) * wordSize)); | |
0 | 1274 __ call(t); |
1275 | |
1276 // remove activation | |
304 | 1277 __ movptr(t, Address(rbp, |
1278 frame::interpreter_frame_sender_sp_offset * | |
1279 wordSize)); // get sender sp | |
0 | 1280 __ leave(); // remove frame anchor |
304 | 1281 __ pop(rdi); // get return address |
1282 __ mov(rsp, t); // set sp to sender sp | |
0 | 1283 __ jmp(rdi); |
1284 | |
1285 if (inc_counter) { | |
1286 // Handle overflow of counter and compile method | |
1287 __ bind(invocation_counter_overflow); | |
1288 generate_counter_overflow(&continue_after_compile); | |
1289 } | |
1290 | |
1291 return entry_point; | |
1292 } | |
1293 | |
1294 // | |
1295 // Generic interpreted method entry to (asm) interpreter | |
1296 // | |
1297 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
1298 // determine code generation flags | |
1299 bool inc_counter = UseCompiler || CountCompiledCalls; | |
1300 | |
1301 // ebx: methodOop | |
1302 // r13: sender sp | |
1303 address entry_point = __ pc(); | |
1304 | |
1305 const Address size_of_parameters(rbx, | |
1306 methodOopDesc::size_of_parameters_offset()); | |
1307 const Address size_of_locals(rbx, methodOopDesc::size_of_locals_offset()); | |
1308 const Address invocation_counter(rbx, | |
1309 methodOopDesc::invocation_counter_offset() + | |
1310 InvocationCounter::counter_offset()); | |
1311 const Address access_flags(rbx, methodOopDesc::access_flags_offset()); | |
1312 | |
1313 // get parameter size (always needed) | |
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1314 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 1315 |
1316 // rbx: methodOop | |
1317 // rcx: size of parameters | |
1318 // r13: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
1319 | |
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1320 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
0 | 1321 __ subl(rdx, rcx); // rdx = no. of additional locals |
1322 | |
1323 // YYY | |
1324 // __ incrementl(rdx); | |
1325 // __ andl(rdx, -2); | |
1326 | |
1327 // see if we've got enough room on the stack for locals plus overhead. | |
1328 generate_stack_overflow_check(); | |
1329 | |
1330 // get return address | |
304 | 1331 __ pop(rax); |
0 | 1332 |
1333 // compute beginning of parameters (r14) | |
304 | 1334 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
0 | 1335 |
1336 // rdx - # of additional locals | |
1337 // allocate space for locals | |
1338 // explicitly initialize locals | |
1339 { | |
1340 Label exit, loop; | |
1341 __ testl(rdx, rdx); | |
1342 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 | |
1343 __ bind(loop); | |
304 | 1344 __ push((int) NULL_WORD); // initialize local variables |
0 | 1345 __ decrementl(rdx); // until everything initialized |
1346 __ jcc(Assembler::greater, loop); | |
1347 __ bind(exit); | |
1348 } | |
1349 | |
1350 // (pre-)fetch invocation count | |
1351 if (inc_counter) { | |
1352 __ movl(rcx, invocation_counter); | |
1353 } | |
1354 // initialize fixed part of activation frame | |
1355 generate_fixed_frame(false); | |
1356 | |
1357 // make sure method is not native & not abstract | |
1358 #ifdef ASSERT | |
1359 __ movl(rax, access_flags); | |
1360 { | |
1361 Label L; | |
1362 __ testl(rax, JVM_ACC_NATIVE); | |
1363 __ jcc(Assembler::zero, L); | |
1364 __ stop("tried to execute native method as non-native"); | |
1365 __ bind(L); | |
1366 } | |
1367 { | |
1368 Label L; | |
1369 __ testl(rax, JVM_ACC_ABSTRACT); | |
1370 __ jcc(Assembler::zero, L); | |
1371 __ stop("tried to execute abstract method in interpreter"); | |
1372 __ bind(L); | |
1373 } | |
1374 #endif | |
1375 | |
1376 // Since at this point in the method invocation the exception | |
1377 // handler would try to exit the monitor of synchronized methods | |
1378 // which hasn't been entered yet, we set the thread local variable | |
1379 // _do_not_unlock_if_synchronized to true. The remove_activation | |
1380 // will check this flag. | |
1381 | |
1382 const Address do_not_unlock_if_synchronized(r15_thread, | |
1383 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
1384 __ movbool(do_not_unlock_if_synchronized, true); | |
1385 | |
1386 // increment invocation count & check for overflow | |
1387 Label invocation_counter_overflow; | |
1388 Label profile_method; | |
1389 Label profile_method_continue; | |
1390 if (inc_counter) { | |
1391 generate_counter_incr(&invocation_counter_overflow, | |
1392 &profile_method, | |
1393 &profile_method_continue); | |
1394 if (ProfileInterpreter) { | |
1395 __ bind(profile_method_continue); | |
1396 } | |
1397 } | |
1398 | |
1399 Label continue_after_compile; | |
1400 __ bind(continue_after_compile); | |
1401 | |
1402 // check for synchronized interpreted methods | |
1403 bang_stack_shadow_pages(false); | |
1404 | |
1405 // reset the _do_not_unlock_if_synchronized flag | |
1406 __ movbool(do_not_unlock_if_synchronized, false); | |
1407 | |
1408 // check for synchronized methods | |
1409 // Must happen AFTER invocation_counter check and stack overflow check, | |
1410 // so method is not locked if overflows. | |
1411 if (synchronized) { | |
1412 // Allocate monitor and lock method | |
1413 lock_method(); | |
1414 } else { | |
1415 // no synchronization necessary | |
1416 #ifdef ASSERT | |
1417 { | |
1418 Label L; | |
1419 __ movl(rax, access_flags); | |
1420 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
1421 __ jcc(Assembler::zero, L); | |
1422 __ stop("method needs synchronization"); | |
1423 __ bind(L); | |
1424 } | |
1425 #endif | |
1426 } | |
1427 | |
1428 // start execution | |
1429 #ifdef ASSERT | |
1430 { | |
1431 Label L; | |
1432 const Address monitor_block_top (rbp, | |
1433 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 1434 __ movptr(rax, monitor_block_top); |
1435 __ cmpptr(rax, rsp); | |
0 | 1436 __ jcc(Assembler::equal, L); |
1437 __ stop("broken stack frame setup in interpreter"); | |
1438 __ bind(L); | |
1439 } | |
1440 #endif | |
1441 | |
1442 // jvmti support | |
1443 __ notify_method_entry(); | |
1444 | |
1445 __ dispatch_next(vtos); | |
1446 | |
1447 // invocation counter overflow | |
1448 if (inc_counter) { | |
1449 if (ProfileInterpreter) { | |
1450 // We have decided to profile this method in the interpreter | |
1451 __ bind(profile_method); | |
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1452 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
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1453 __ set_method_data_pointer_for_bcp(); |
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1454 __ get_method(rbx); |
0 | 1455 __ jmp(profile_method_continue); |
1456 } | |
1457 // Handle overflow of counter and compile method | |
1458 __ bind(invocation_counter_overflow); | |
1459 generate_counter_overflow(&continue_after_compile); | |
1460 } | |
1461 | |
1462 return entry_point; | |
1463 } | |
1464 | |
1465 // Entry points | |
1466 // | |
1467 // Here we generate the various kind of entries into the interpreter. | |
1468 // The two main entry type are generic bytecode methods and native | |
1469 // call method. These both come in synchronized and non-synchronized | |
1470 // versions but the frame layout they create is very similar. The | |
1471 // other method entry types are really just special purpose entries | |
1472 // that are really entry and interpretation all in one. These are for | |
1473 // trivial methods like accessor, empty, or special math methods. | |
1474 // | |
1475 // When control flow reaches any of the entry types for the interpreter | |
1476 // the following holds -> | |
1477 // | |
1478 // Arguments: | |
1479 // | |
1480 // rbx: methodOop | |
1481 // | |
1482 // Stack layout immediately at entry | |
1483 // | |
1484 // [ return address ] <--- rsp | |
1485 // [ parameter n ] | |
1486 // ... | |
1487 // [ parameter 1 ] | |
1488 // [ expression stack ] (caller's java expression stack) | |
1489 | |
1490 // Assuming that we don't go to one of the trivial specialized entries | |
1491 // the stack will look like below when we are ready to execute the | |
1492 // first bytecode (or call the native routine). The register usage | |
1493 // will be as the template based interpreter expects (see | |
1494 // interpreter_amd64.hpp). | |
1495 // | |
1496 // local variables follow incoming parameters immediately; i.e. | |
1497 // the return address is moved to the end of the locals). | |
1498 // | |
1499 // [ monitor entry ] <--- rsp | |
1500 // ... | |
1501 // [ monitor entry ] | |
1502 // [ expr. stack bottom ] | |
1503 // [ saved r13 ] | |
1504 // [ current r14 ] | |
1505 // [ methodOop ] | |
1506 // [ saved ebp ] <--- rbp | |
1507 // [ return address ] | |
1508 // [ local variable m ] | |
1509 // ... | |
1510 // [ local variable 1 ] | |
1511 // [ parameter n ] | |
1512 // ... | |
1513 // [ parameter 1 ] <--- r14 | |
1514 | |
1515 address AbstractInterpreterGenerator::generate_method_entry( | |
1516 AbstractInterpreter::MethodKind kind) { | |
1517 // determine code generation flags | |
1518 bool synchronized = false; | |
1519 address entry_point = NULL; | |
1520 | |
1521 switch (kind) { | |
1522 case Interpreter::zerolocals : break; | |
1523 case Interpreter::zerolocals_synchronized: synchronized = true; break; | |
1524 case Interpreter::native : entry_point = ((InterpreterGenerator*) this)->generate_native_entry(false); break; | |
1525 case Interpreter::native_synchronized : entry_point = ((InterpreterGenerator*) this)->generate_native_entry(true); break; | |
1526 case Interpreter::empty : entry_point = ((InterpreterGenerator*) this)->generate_empty_entry(); break; | |
1527 case Interpreter::accessor : entry_point = ((InterpreterGenerator*) this)->generate_accessor_entry(); break; | |
1528 case Interpreter::abstract : entry_point = ((InterpreterGenerator*) this)->generate_abstract_entry(); break; | |
710 | 1529 case Interpreter::method_handle : entry_point = ((InterpreterGenerator*) this)->generate_method_handle_entry();break; |
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1530 |
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1531 case Interpreter::java_lang_math_sin : // fall thru |
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1532 case Interpreter::java_lang_math_cos : // fall thru |
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1533 case Interpreter::java_lang_math_tan : // fall thru |
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1534 case Interpreter::java_lang_math_abs : // fall thru |
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1535 case Interpreter::java_lang_math_log : // fall thru |
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1536 case Interpreter::java_lang_math_log10 : // fall thru |
0 | 1537 case Interpreter::java_lang_math_sqrt : entry_point = ((InterpreterGenerator*) this)->generate_math_entry(kind); break; |
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1538 case Interpreter::java_lang_ref_reference_get |
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1539 : entry_point = ((InterpreterGenerator*)this)->generate_Reference_get_entry(); break; |
0 | 1540 default : ShouldNotReachHere(); break; |
1541 } | |
1542 | |
1543 if (entry_point) { | |
1544 return entry_point; | |
1545 } | |
1546 | |
1547 return ((InterpreterGenerator*) this)-> | |
1548 generate_normal_entry(synchronized); | |
1549 } | |
1550 | |
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1551 // These should never be compiled since the interpreter will prefer |
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1552 // the compiled version to the intrinsic version. |
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1553 bool AbstractInterpreter::can_be_compiled(methodHandle m) { |
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1554 switch (method_kind(m)) { |
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1555 case Interpreter::java_lang_math_sin : // fall thru |
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1556 case Interpreter::java_lang_math_cos : // fall thru |
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1557 case Interpreter::java_lang_math_tan : // fall thru |
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1558 case Interpreter::java_lang_math_abs : // fall thru |
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1559 case Interpreter::java_lang_math_log : // fall thru |
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1560 case Interpreter::java_lang_math_log10 : // fall thru |
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1561 case Interpreter::java_lang_math_sqrt : |
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1562 return false; |
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1563 default: |
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1564 return true; |
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1565 } |
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1566 } |
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1567 |
0 | 1568 // How much stack a method activation needs in words. |
1569 int AbstractInterpreter::size_top_interpreter_activation(methodOop method) { | |
1570 const int entry_size = frame::interpreter_frame_monitor_size(); | |
1571 | |
1572 // total overhead size: entry_size + (saved rbp thru expr stack | |
1573 // bottom). be sure to change this if you add/subtract anything | |
1574 // to/from the overhead area | |
1575 const int overhead_size = | |
1576 -(frame::interpreter_frame_initial_sp_offset) + entry_size; | |
1577 | |
1578 const int stub_code = frame::entry_frame_after_call_words; | |
710 | 1579 const int extra_stack = methodOopDesc::extra_stack_entries(); |
1580 const int method_stack = (method->max_locals() + method->max_stack() + extra_stack) * | |
1506 | 1581 Interpreter::stackElementWords; |
0 | 1582 return (overhead_size + method_stack + stub_code); |
1583 } | |
1584 | |
1585 int AbstractInterpreter::layout_activation(methodOop method, | |
1586 int tempcount, | |
1587 int popframe_extra_args, | |
1588 int moncount, | |
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1589 int caller_actual_parameters, |
0 | 1590 int callee_param_count, |
1591 int callee_locals, | |
1592 frame* caller, | |
1593 frame* interpreter_frame, | |
1594 bool is_top_frame) { | |
1595 // Note: This calculation must exactly parallel the frame setup | |
1596 // in AbstractInterpreterGenerator::generate_method_entry. | |
1597 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
1598 // The frame interpreter_frame, if not NULL, is guaranteed to be the | |
1599 // right size, as determined by a previous call to this method. | |
1600 // It is also guaranteed to be walkable even though it is in a skeletal state | |
1601 | |
1602 // fixed size of an interpreter frame: | |
1506 | 1603 int max_locals = method->max_locals() * Interpreter::stackElementWords; |
0 | 1604 int extra_locals = (method->max_locals() - method->size_of_parameters()) * |
1506 | 1605 Interpreter::stackElementWords; |
0 | 1606 |
1607 int overhead = frame::sender_sp_offset - | |
1608 frame::interpreter_frame_initial_sp_offset; | |
1609 // Our locals were accounted for by the caller (or last_frame_adjust | |
1610 // on the transistion) Since the callee parameters already account | |
1611 // for the callee's params we only need to account for the extra | |
1612 // locals. | |
1613 int size = overhead + | |
1506 | 1614 (callee_locals - callee_param_count)*Interpreter::stackElementWords + |
0 | 1615 moncount * frame::interpreter_frame_monitor_size() + |
1506 | 1616 tempcount* Interpreter::stackElementWords + popframe_extra_args; |
0 | 1617 if (interpreter_frame != NULL) { |
1618 #ifdef ASSERT | |
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1619 if (!EnableInvokeDynamic) |
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1620 // @@@ FIXME: Should we correct interpreter_frame_sender_sp in the calling sequences? |
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1621 // Probably, since deoptimization doesn't work yet. |
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1622 assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable"); |
0 | 1623 assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)"); |
1624 #endif | |
1625 | |
1626 interpreter_frame->interpreter_frame_set_method(method); | |
1627 // NOTE the difference in using sender_sp and | |
1628 // interpreter_frame_sender_sp interpreter_frame_sender_sp is | |
1629 // the original sp of the caller (the unextended_sp) and | |
1630 // sender_sp is fp+16 XXX | |
1631 intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; | |
1632 | |
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1633 #ifdef ASSERT |
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1634 if (caller->is_interpreted_frame()) { |
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1635 assert(locals < caller->fp() + frame::interpreter_frame_initial_sp_offset, "bad placement"); |
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1636 } |
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1637 #endif |
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1638 |
0 | 1639 interpreter_frame->interpreter_frame_set_locals(locals); |
1640 BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); | |
1641 BasicObjectLock* monbot = montop - moncount; | |
1642 interpreter_frame->interpreter_frame_set_monitor_end(monbot); | |
1643 | |
1644 // Set last_sp | |
1645 intptr_t* esp = (intptr_t*) monbot - | |
1506 | 1646 tempcount*Interpreter::stackElementWords - |
0 | 1647 popframe_extra_args; |
1648 interpreter_frame->interpreter_frame_set_last_sp(esp); | |
1649 | |
1650 // All frames but the initial (oldest) interpreter frame we fill in have | |
1651 // a value for sender_sp that allows walking the stack but isn't | |
1652 // truly correct. Correct the value here. | |
1653 if (extra_locals != 0 && | |
1654 interpreter_frame->sender_sp() == | |
1655 interpreter_frame->interpreter_frame_sender_sp()) { | |
1656 interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + | |
1657 extra_locals); | |
1658 } | |
1659 *interpreter_frame->interpreter_frame_cache_addr() = | |
1660 method->constants()->cache(); | |
1661 } | |
1662 return size; | |
1663 } | |
1664 | |
1665 //----------------------------------------------------------------------------- | |
1666 // Exceptions | |
1667 | |
1668 void TemplateInterpreterGenerator::generate_throw_exception() { | |
1669 // Entry point in previous activation (i.e., if the caller was | |
1670 // interpreted) | |
1671 Interpreter::_rethrow_exception_entry = __ pc(); | |
1672 // Restore sp to interpreter_frame_last_sp even though we are going | |
1673 // to empty the expression stack for the exception processing. | |
304 | 1674 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 1675 // rax: exception |
1676 // rdx: return address/pc that threw exception | |
1677 __ restore_bcp(); // r13 points to call/send | |
1678 __ restore_locals(); | |
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1679 __ reinit_heapbase(); // restore r12 as heapbase. |
0 | 1680 // Entry point for exceptions thrown within interpreter code |
1681 Interpreter::_throw_exception_entry = __ pc(); | |
1682 // expression stack is undefined here | |
1683 // rax: exception | |
1684 // r13: exception bcp | |
1685 __ verify_oop(rax); | |
304 | 1686 __ mov(c_rarg1, rax); |
0 | 1687 |
1688 // expression stack must be empty before entering the VM in case of | |
1689 // an exception | |
1690 __ empty_expression_stack(); | |
1691 // find exception handler address and preserve exception oop | |
1692 __ call_VM(rdx, | |
1693 CAST_FROM_FN_PTR(address, | |
1694 InterpreterRuntime::exception_handler_for_exception), | |
1695 c_rarg1); | |
1696 // rax: exception handler entry point | |
1697 // rdx: preserved exception oop | |
1698 // r13: bcp for exception handler | |
1699 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
1700 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
1701 | |
1702 // If the exception is not handled in the current frame the frame is | |
1703 // removed and the exception is rethrown (i.e. exception | |
1704 // continuation is _rethrow_exception). | |
1705 // | |
1706 // Note: At this point the bci is still the bxi for the instruction | |
1707 // which caused the exception and the expression stack is | |
1708 // empty. Thus, for any VM calls at this point, GC will find a legal | |
1709 // oop map (with empty expression stack). | |
1710 | |
1711 // In current activation | |
1712 // tos: exception | |
1713 // esi: exception bcp | |
1714 | |
1715 // | |
1716 // JVMTI PopFrame support | |
1717 // | |
1718 | |
1719 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
1720 __ empty_expression_stack(); | |
1721 // Set the popframe_processing bit in pending_popframe_condition | |
1722 // indicating that we are currently handling popframe, so that | |
1723 // call_VMs that may happen later do not trigger new popframe | |
1724 // handling cycles. | |
1725 __ movl(rdx, Address(r15_thread, JavaThread::popframe_condition_offset())); | |
1726 __ orl(rdx, JavaThread::popframe_processing_bit); | |
1727 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), rdx); | |
1728 | |
1729 { | |
1730 // Check to see whether we are returning to a deoptimized frame. | |
1731 // (The PopFrame call ensures that the caller of the popped frame is | |
1732 // either interpreted or compiled and deoptimizes it if compiled.) | |
1733 // In this case, we can't call dispatch_next() after the frame is | |
1734 // popped, but instead must save the incoming arguments and restore | |
1735 // them after deoptimization has occurred. | |
1736 // | |
1737 // Note that we don't compare the return PC against the | |
1738 // deoptimization blob's unpack entry because of the presence of | |
1739 // adapter frames in C2. | |
1740 Label caller_not_deoptimized; | |
304 | 1741 __ movptr(c_rarg1, Address(rbp, frame::return_addr_offset * wordSize)); |
0 | 1742 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
1743 InterpreterRuntime::interpreter_contains), c_rarg1); | |
1744 __ testl(rax, rax); | |
1745 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
1746 | |
1747 // Compute size of arguments for saving when returning to | |
1748 // deoptimized caller | |
1749 __ get_method(rax); | |
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1750 __ load_unsigned_short(rax, Address(rax, in_bytes(methodOopDesc:: |
0 | 1751 size_of_parameters_offset()))); |
1506 | 1752 __ shll(rax, Interpreter::logStackElementSize); |
0 | 1753 __ restore_locals(); // XXX do we need this? |
304 | 1754 __ subptr(r14, rax); |
1755 __ addptr(r14, wordSize); | |
0 | 1756 // Save these arguments |
1757 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, | |
1758 Deoptimization:: | |
1759 popframe_preserve_args), | |
1760 r15_thread, rax, r14); | |
1761 | |
1762 __ remove_activation(vtos, rdx, | |
1763 /* throw_monitor_exception */ false, | |
1764 /* install_monitor_exception */ false, | |
1765 /* notify_jvmdi */ false); | |
1766 | |
1767 // Inform deoptimization that it is responsible for restoring | |
1768 // these arguments | |
1769 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
1770 JavaThread::popframe_force_deopt_reexecution_bit); | |
1771 | |
1772 // Continue in deoptimization handler | |
1773 __ jmp(rdx); | |
1774 | |
1775 __ bind(caller_not_deoptimized); | |
1776 } | |
1777 | |
1778 __ remove_activation(vtos, rdx, /* rdx result (retaddr) is not used */ | |
1779 /* throw_monitor_exception */ false, | |
1780 /* install_monitor_exception */ false, | |
1781 /* notify_jvmdi */ false); | |
1782 | |
1783 // Finish with popframe handling | |
1784 // A previous I2C followed by a deoptimization might have moved the | |
1785 // outgoing arguments further up the stack. PopFrame expects the | |
1786 // mutations to those outgoing arguments to be preserved and other | |
1787 // constraints basically require this frame to look exactly as | |
1788 // though it had previously invoked an interpreted activation with | |
1789 // no space between the top of the expression stack (current | |
1790 // last_sp) and the top of stack. Rather than force deopt to | |
1791 // maintain this kind of invariant all the time we call a small | |
1792 // fixup routine to move the mutated arguments onto the top of our | |
1793 // expression stack if necessary. | |
304 | 1794 __ mov(c_rarg1, rsp); |
1795 __ movptr(c_rarg2, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
0 | 1796 // PC must point into interpreter here |
1797 __ set_last_Java_frame(noreg, rbp, __ pc()); | |
1798 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), r15_thread, c_rarg1, c_rarg2); | |
1799 __ reset_last_Java_frame(true, true); | |
1800 // Restore the last_sp and null it out | |
304 | 1801 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
1802 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); | |
0 | 1803 |
1804 __ restore_bcp(); // XXX do we need this? | |
1805 __ restore_locals(); // XXX do we need this? | |
1806 // The method data pointer was incremented already during | |
1807 // call profiling. We have to restore the mdp for the current bcp. | |
1808 if (ProfileInterpreter) { | |
1809 __ set_method_data_pointer_for_bcp(); | |
1810 } | |
1811 | |
1812 // Clear the popframe condition flag | |
1813 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
1814 JavaThread::popframe_inactive); | |
1815 | |
1816 __ dispatch_next(vtos); | |
1817 // end of PopFrame support | |
1818 | |
1819 Interpreter::_remove_activation_entry = __ pc(); | |
1820 | |
1821 // preserve exception over this code sequence | |
1822 __ pop_ptr(rax); | |
304 | 1823 __ movptr(Address(r15_thread, JavaThread::vm_result_offset()), rax); |
0 | 1824 // remove the activation (without doing throws on illegalMonitorExceptions) |
1825 __ remove_activation(vtos, rdx, false, true, false); | |
1826 // restore exception | |
304 | 1827 __ movptr(rax, Address(r15_thread, JavaThread::vm_result_offset())); |
1828 __ movptr(Address(r15_thread, JavaThread::vm_result_offset()), (int32_t)NULL_WORD); | |
0 | 1829 __ verify_oop(rax); |
1830 | |
1831 // In between activations - previous activation type unknown yet | |
1832 // compute continuation point - the continuation point expects the | |
1833 // following registers set up: | |
1834 // | |
1835 // rax: exception | |
1836 // rdx: return address/pc that threw exception | |
1837 // rsp: expression stack of caller | |
1838 // rbp: ebp of caller | |
304 | 1839 __ push(rax); // save exception |
1840 __ push(rdx); // save return address | |
0 | 1841 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
1842 SharedRuntime::exception_handler_for_return_address), | |
1295 | 1843 r15_thread, rdx); |
304 | 1844 __ mov(rbx, rax); // save exception handler |
1845 __ pop(rdx); // restore return address | |
1846 __ pop(rax); // restore exception | |
0 | 1847 // Note that an "issuing PC" is actually the next PC after the call |
1848 __ jmp(rbx); // jump to exception | |
1849 // handler of caller | |
1850 } | |
1851 | |
1852 | |
1853 // | |
1854 // JVMTI ForceEarlyReturn support | |
1855 // | |
1856 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
1857 address entry = __ pc(); | |
1858 | |
1859 __ restore_bcp(); | |
1860 __ restore_locals(); | |
1861 __ empty_expression_stack(); | |
1862 __ load_earlyret_value(state); | |
1863 | |
304 | 1864 __ movptr(rdx, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
0 | 1865 Address cond_addr(rdx, JvmtiThreadState::earlyret_state_offset()); |
1866 | |
1867 // Clear the earlyret state | |
1868 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
1869 | |
1870 __ remove_activation(state, rsi, | |
1871 false, /* throw_monitor_exception */ | |
1872 false, /* install_monitor_exception */ | |
1873 true); /* notify_jvmdi */ | |
1874 __ jmp(rsi); | |
1875 | |
1876 return entry; | |
1877 } // end of ForceEarlyReturn support | |
1878 | |
1879 | |
1880 //----------------------------------------------------------------------------- | |
1881 // Helper for vtos entry point generation | |
1882 | |
1883 void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t, | |
1884 address& bep, | |
1885 address& cep, | |
1886 address& sep, | |
1887 address& aep, | |
1888 address& iep, | |
1889 address& lep, | |
1890 address& fep, | |
1891 address& dep, | |
1892 address& vep) { | |
1893 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
1894 Label L; | |
1895 aep = __ pc(); __ push_ptr(); __ jmp(L); | |
1896 fep = __ pc(); __ push_f(); __ jmp(L); | |
1897 dep = __ pc(); __ push_d(); __ jmp(L); | |
1898 lep = __ pc(); __ push_l(); __ jmp(L); | |
1899 bep = cep = sep = | |
1900 iep = __ pc(); __ push_i(); | |
1901 vep = __ pc(); | |
1902 __ bind(L); | |
1903 generate_and_dispatch(t); | |
1904 } | |
1905 | |
1906 | |
1907 //----------------------------------------------------------------------------- | |
1908 // Generation of individual instructions | |
1909 | |
1910 // helpers for generate_and_dispatch | |
1911 | |
1912 | |
1913 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
1914 : TemplateInterpreterGenerator(code) { | |
1915 generate_all(); // down here so it can be "virtual" | |
1916 } | |
1917 | |
1918 //----------------------------------------------------------------------------- | |
1919 | |
1920 // Non-product code | |
1921 #ifndef PRODUCT | |
1922 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
1923 address entry = __ pc(); | |
1924 | |
1925 __ push(state); | |
304 | 1926 __ push(c_rarg0); |
1927 __ push(c_rarg1); | |
1928 __ push(c_rarg2); | |
1929 __ push(c_rarg3); | |
1930 __ mov(c_rarg2, rax); // Pass itos | |
0 | 1931 #ifdef _WIN64 |
1932 __ movflt(xmm3, xmm0); // Pass ftos | |
1933 #endif | |
1934 __ call_VM(noreg, | |
1935 CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), | |
1936 c_rarg1, c_rarg2, c_rarg3); | |
304 | 1937 __ pop(c_rarg3); |
1938 __ pop(c_rarg2); | |
1939 __ pop(c_rarg1); | |
1940 __ pop(c_rarg0); | |
0 | 1941 __ pop(state); |
1942 __ ret(0); // return from result handler | |
1943 | |
1944 return entry; | |
1945 } | |
1946 | |
1947 void TemplateInterpreterGenerator::count_bytecode() { | |
1948 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); | |
1949 } | |
1950 | |
1951 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
1952 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); | |
1953 } | |
1954 | |
1955 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
1956 __ mov32(rbx, ExternalAddress((address) &BytecodePairHistogram::_index)); | |
1957 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
1958 __ orl(rbx, | |
1959 ((int) t->bytecode()) << | |
1960 BytecodePairHistogram::log2_number_of_codes); | |
1961 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
1962 __ lea(rscratch1, ExternalAddress((address) BytecodePairHistogram::_counters)); | |
1963 __ incrementl(Address(rscratch1, rbx, Address::times_4)); | |
1964 } | |
1965 | |
1966 | |
1967 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
1968 // Call a little run-time stub to avoid blow-up for each bytecode. | |
1969 // The run-time runtime saves the right registers, depending on | |
1970 // the tosca in-state for the given template. | |
1971 | |
1972 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
1973 "entry must have been generated"); | |
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1974 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1975 __ andptr(rsp, -16); // align stack as required by ABI |
0 | 1976 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); |
304 | 1977 __ mov(rsp, r12); // restore sp |
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1978 __ reinit_heapbase(); |
0 | 1979 } |
1980 | |
1981 | |
1982 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
1983 Label L; | |
1984 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
1985 StopInterpreterAt); | |
1986 __ jcc(Assembler::notEqual, L); | |
1987 __ int3(); | |
1988 __ bind(L); | |
1989 } | |
1990 #endif // !PRODUCT | |
304 | 1991 #endif // ! CC_INTERP |