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annotate src/cpu/x86/vm/templateInterpreter_x86_64.cpp @ 10116:2a9d97b57920
Merge
author | bharadwaj |
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date | Fri, 19 Apr 2013 03:13:04 -0400 |
parents | aeaca88565e6 |
children | 47766e2d2527 |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2013, 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" |
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26 #include "asm/macroAssembler.hpp" |
1972 | 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" | |
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33 #include "oops/methodData.hpp" |
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34 #include "oops/method.hpp" |
1972 | 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" | |
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47 #include "utilities/macros.hpp" |
0 | 48 |
49 #define __ _masm-> | |
50 | |
304 | 51 #ifndef CC_INTERP |
52 | |
0 | 53 const int method_offset = frame::interpreter_frame_method_offset * wordSize; |
54 const int bci_offset = frame::interpreter_frame_bcx_offset * wordSize; | |
55 const int locals_offset = frame::interpreter_frame_locals_offset * wordSize; | |
56 | |
57 //----------------------------------------------------------------------------- | |
58 | |
59 address TemplateInterpreterGenerator::generate_StackOverflowError_handler() { | |
60 address entry = __ pc(); | |
61 | |
62 #ifdef ASSERT | |
63 { | |
64 Label L; | |
304 | 65 __ lea(rax, Address(rbp, |
66 frame::interpreter_frame_monitor_block_top_offset * | |
67 wordSize)); | |
68 __ cmpptr(rax, rsp); // rax = maximal rsp for current rbp (stack | |
69 // grows negative) | |
0 | 70 __ jcc(Assembler::aboveEqual, L); // check if frame is complete |
71 __ stop ("interpreter frame not set up"); | |
72 __ bind(L); | |
73 } | |
74 #endif // ASSERT | |
75 // Restore bcp under the assumption that the current frame is still | |
76 // interpreted | |
77 __ restore_bcp(); | |
78 | |
79 // expression stack must be empty before entering the VM if an | |
80 // exception happened | |
81 __ empty_expression_stack(); | |
82 // throw exception | |
83 __ call_VM(noreg, | |
84 CAST_FROM_FN_PTR(address, | |
85 InterpreterRuntime::throw_StackOverflowError)); | |
86 return entry; | |
87 } | |
88 | |
89 address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler( | |
90 const char* name) { | |
91 address entry = __ pc(); | |
92 // expression stack must be empty before entering the VM if an | |
93 // exception happened | |
94 __ empty_expression_stack(); | |
95 // setup parameters | |
96 // ??? convention: expect aberrant index in register ebx | |
97 __ lea(c_rarg1, ExternalAddress((address)name)); | |
98 __ call_VM(noreg, | |
99 CAST_FROM_FN_PTR(address, | |
100 InterpreterRuntime:: | |
101 throw_ArrayIndexOutOfBoundsException), | |
102 c_rarg1, rbx); | |
103 return entry; | |
104 } | |
105 | |
106 address TemplateInterpreterGenerator::generate_ClassCastException_handler() { | |
107 address entry = __ pc(); | |
108 | |
109 // object is at TOS | |
304 | 110 __ pop(c_rarg1); |
0 | 111 |
112 // expression stack must be empty before entering the VM if an | |
113 // exception happened | |
114 __ empty_expression_stack(); | |
115 | |
116 __ call_VM(noreg, | |
117 CAST_FROM_FN_PTR(address, | |
118 InterpreterRuntime:: | |
119 throw_ClassCastException), | |
120 c_rarg1); | |
121 return entry; | |
122 } | |
123 | |
124 address TemplateInterpreterGenerator::generate_exception_handler_common( | |
125 const char* name, const char* message, bool pass_oop) { | |
126 assert(!pass_oop || message == NULL, "either oop or message but not both"); | |
127 address entry = __ pc(); | |
128 if (pass_oop) { | |
129 // object is at TOS | |
304 | 130 __ pop(c_rarg2); |
0 | 131 } |
132 // expression stack must be empty before entering the VM if an | |
133 // exception happened | |
134 __ empty_expression_stack(); | |
135 // setup parameters | |
136 __ lea(c_rarg1, ExternalAddress((address)name)); | |
137 if (pass_oop) { | |
138 __ call_VM(rax, CAST_FROM_FN_PTR(address, | |
139 InterpreterRuntime:: | |
140 create_klass_exception), | |
141 c_rarg1, c_rarg2); | |
142 } else { | |
143 // kind of lame ExternalAddress can't take NULL because | |
144 // external_word_Relocation will assert. | |
145 if (message != NULL) { | |
146 __ lea(c_rarg2, ExternalAddress((address)message)); | |
147 } else { | |
148 __ movptr(c_rarg2, NULL_WORD); | |
149 } | |
150 __ call_VM(rax, | |
151 CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), | |
152 c_rarg1, c_rarg2); | |
153 } | |
154 // throw exception | |
155 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
156 return entry; | |
157 } | |
158 | |
159 | |
160 address TemplateInterpreterGenerator::generate_continuation_for(TosState state) { | |
161 address entry = __ pc(); | |
162 // NULL last_sp until next java call | |
304 | 163 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 164 __ dispatch_next(state); |
165 return entry; | |
166 } | |
167 | |
168 | |
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169 address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step) { |
0 | 170 address entry = __ pc(); |
171 | |
172 // Restore stack bottom in case i2c adjusted stack | |
304 | 173 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
0 | 174 // and NULL it as marker that esp is now tos until next java call |
304 | 175 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 176 |
177 __ restore_bcp(); | |
178 __ restore_locals(); | |
304 | 179 |
1108 | 180 Label L_got_cache, L_giant_index; |
181 if (EnableInvokeDynamic) { | |
182 __ cmpb(Address(r13, 0), Bytecodes::_invokedynamic); | |
183 __ jcc(Assembler::equal, L_giant_index); | |
184 } | |
1565 | 185 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u2)); |
1108 | 186 __ bind(L_got_cache); |
0 | 187 __ movl(rbx, Address(rbx, rcx, |
1108 | 188 Address::times_ptr, |
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189 in_bytes(ConstantPoolCache::base_offset()) + |
0 | 190 3 * wordSize)); |
191 __ andl(rbx, 0xFF); | |
304 | 192 __ lea(rsp, Address(rsp, rbx, Address::times_8)); |
0 | 193 __ dispatch_next(state, step); |
1108 | 194 |
195 // out of the main line of code... | |
196 if (EnableInvokeDynamic) { | |
197 __ bind(L_giant_index); | |
1565 | 198 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u4)); |
1108 | 199 __ jmp(L_got_cache); |
200 } | |
201 | |
0 | 202 return entry; |
203 } | |
204 | |
205 | |
206 address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, | |
207 int step) { | |
208 address entry = __ pc(); | |
209 // NULL last_sp until next java call | |
304 | 210 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 211 __ restore_bcp(); |
212 __ restore_locals(); | |
213 // handle exceptions | |
214 { | |
215 Label L; | |
304 | 216 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
0 | 217 __ jcc(Assembler::zero, L); |
218 __ call_VM(noreg, | |
219 CAST_FROM_FN_PTR(address, | |
220 InterpreterRuntime::throw_pending_exception)); | |
221 __ should_not_reach_here(); | |
222 __ bind(L); | |
223 } | |
224 __ dispatch_next(state, step); | |
225 return entry; | |
226 } | |
227 | |
228 int AbstractInterpreter::BasicType_as_index(BasicType type) { | |
229 int i = 0; | |
230 switch (type) { | |
231 case T_BOOLEAN: i = 0; break; | |
232 case T_CHAR : i = 1; break; | |
233 case T_BYTE : i = 2; break; | |
234 case T_SHORT : i = 3; break; | |
235 case T_INT : i = 4; break; | |
236 case T_LONG : i = 5; break; | |
237 case T_VOID : i = 6; break; | |
238 case T_FLOAT : i = 7; break; | |
239 case T_DOUBLE : i = 8; break; | |
240 case T_OBJECT : i = 9; break; | |
241 case T_ARRAY : i = 9; break; | |
242 default : ShouldNotReachHere(); | |
243 } | |
244 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, | |
245 "index out of bounds"); | |
246 return i; | |
247 } | |
248 | |
249 | |
250 address TemplateInterpreterGenerator::generate_result_handler_for( | |
251 BasicType type) { | |
252 address entry = __ pc(); | |
253 switch (type) { | |
254 case T_BOOLEAN: __ c2bool(rax); break; | |
255 case T_CHAR : __ movzwl(rax, rax); break; | |
256 case T_BYTE : __ sign_extend_byte(rax); break; | |
257 case T_SHORT : __ sign_extend_short(rax); break; | |
258 case T_INT : /* nothing to do */ break; | |
259 case T_LONG : /* nothing to do */ break; | |
260 case T_VOID : /* nothing to do */ break; | |
261 case T_FLOAT : /* nothing to do */ break; | |
262 case T_DOUBLE : /* nothing to do */ break; | |
263 case T_OBJECT : | |
264 // retrieve result from frame | |
304 | 265 __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); |
0 | 266 // and verify it |
267 __ verify_oop(rax); | |
268 break; | |
269 default : ShouldNotReachHere(); | |
270 } | |
271 __ ret(0); // return from result handler | |
272 return entry; | |
273 } | |
274 | |
275 address TemplateInterpreterGenerator::generate_safept_entry_for( | |
276 TosState state, | |
277 address runtime_entry) { | |
278 address entry = __ pc(); | |
279 __ push(state); | |
280 __ call_VM(noreg, runtime_entry); | |
281 __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); | |
282 return entry; | |
283 } | |
284 | |
285 | |
286 | |
287 // Helpers for commoning out cases in the various type of method entries. | |
288 // | |
289 | |
290 | |
291 // increment invocation count & check for overflow | |
292 // | |
293 // Note: checking for negative value instead of overflow | |
294 // so we have a 'sticky' overflow test | |
295 // | |
296 // rbx: method | |
297 // ecx: invocation counter | |
298 // | |
299 void InterpreterGenerator::generate_counter_incr( | |
300 Label* overflow, | |
301 Label* profile_method, | |
302 Label* profile_method_continue) { | |
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303 Label done; |
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304 // Note: In tiered we increment either counters in Method* or in MDO depending if we're profiling or not. |
1783 | 305 if (TieredCompilation) { |
306 int increment = InvocationCounter::count_increment; | |
307 int mask = ((1 << Tier0InvokeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
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308 Label no_mdo; |
1783 | 309 if (ProfileInterpreter) { |
310 // Are we profiling? | |
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311 __ movptr(rax, Address(rbx, Method::method_data_offset())); |
1783 | 312 __ testptr(rax, rax); |
313 __ jccb(Assembler::zero, no_mdo); | |
314 // Increment counter in the MDO | |
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315 const Address mdo_invocation_counter(rax, in_bytes(MethodData::invocation_counter_offset()) + |
1783 | 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); | |
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321 // Increment counter in MethodCounters |
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322 const Address invocation_counter(rax, |
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323 MethodCounters::invocation_counter_offset() + |
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324 InvocationCounter::counter_offset()); |
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325 __ get_method_counters(rbx, rax, done); |
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326 __ increment_mask_and_jump(invocation_counter, increment, mask, rcx, |
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327 false, Assembler::zero, overflow); |
1783 | 328 __ bind(done); |
329 } else { | |
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330 const Address backedge_counter(rax, |
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331 MethodCounters::backedge_counter_offset() + |
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332 InvocationCounter::counter_offset()); |
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333 const Address invocation_counter(rax, |
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334 MethodCounters::invocation_counter_offset() + |
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335 InvocationCounter::counter_offset()); |
0 | 336 |
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337 __ get_method_counters(rbx, rax, done); |
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338 |
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339 if (ProfileInterpreter) { |
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340 __ incrementl(Address(rax, |
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341 MethodCounters::interpreter_invocation_counter_offset())); |
1783 | 342 } |
343 // Update standard invocation counters | |
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344 __ movl(rcx, invocation_counter); |
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345 __ incrementl(rcx, InvocationCounter::count_increment); |
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346 __ movl(invocation_counter, rcx); // save invocation count |
0 | 347 |
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348 __ movl(rax, backedge_counter); // load backedge counter |
1783 | 349 __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits |
0 | 350 |
1783 | 351 __ addl(rcx, rax); // add both counters |
0 | 352 |
1783 | 353 // profile_method is non-null only for interpreted method so |
354 // profile_method != NULL == !native_call | |
355 | |
356 if (ProfileInterpreter && profile_method != NULL) { | |
357 // Test to see if we should create a method data oop | |
358 __ cmp32(rcx, ExternalAddress((address)&InvocationCounter::InterpreterProfileLimit)); | |
359 __ jcc(Assembler::less, *profile_method_continue); | |
0 | 360 |
1783 | 361 // if no method data exists, go to profile_method |
362 __ test_method_data_pointer(rax, *profile_method); | |
363 } | |
364 | |
365 __ cmp32(rcx, ExternalAddress((address)&InvocationCounter::InterpreterInvocationLimit)); | |
366 __ jcc(Assembler::aboveEqual, *overflow); | |
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367 __ bind(done); |
0 | 368 } |
369 } | |
370 | |
371 void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { | |
372 | |
373 // Asm interpreter on entry | |
374 // r14 - locals | |
375 // r13 - bcp | |
376 // rbx - method | |
377 // edx - cpool --- DOES NOT APPEAR TO BE TRUE | |
378 // rbp - interpreter frame | |
379 | |
380 // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] | |
381 // Everything as it was on entry | |
382 // rdx is not restored. Doesn't appear to really be set. | |
383 | |
384 // InterpreterRuntime::frequency_counter_overflow takes two | |
385 // arguments, the first (thread) is passed by call_VM, the second | |
386 // indicates if the counter overflow occurs at a backwards branch | |
387 // (NULL bcp). We pass zero for it. The call returns the address | |
388 // of the verified entry point for the method or NULL if the | |
389 // compilation did not complete (either went background or bailed | |
390 // out). | |
391 __ movl(c_rarg1, 0); | |
392 __ call_VM(noreg, | |
393 CAST_FROM_FN_PTR(address, | |
394 InterpreterRuntime::frequency_counter_overflow), | |
395 c_rarg1); | |
396 | |
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397 __ movptr(rbx, Address(rbp, method_offset)); // restore Method* |
0 | 398 // Preserve invariant that r13/r14 contain bcp/locals of sender frame |
399 // and jump to the interpreted entry. | |
400 __ jmp(*do_continue, relocInfo::none); | |
401 } | |
402 | |
403 // See if we've got enough room on the stack for locals plus overhead. | |
404 // The expression stack grows down incrementally, so the normal guard | |
405 // page mechanism will work for that. | |
406 // | |
407 // NOTE: Since the additional locals are also always pushed (wasn't | |
408 // obvious in generate_method_entry) so the guard should work for them | |
409 // too. | |
410 // | |
411 // Args: | |
412 // rdx: number of additional locals this frame needs (what we must check) | |
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413 // rbx: Method* |
0 | 414 // |
415 // Kills: | |
416 // rax | |
417 void InterpreterGenerator::generate_stack_overflow_check(void) { | |
418 | |
419 // monitor entry size: see picture of stack set | |
420 // (generate_method_entry) and frame_amd64.hpp | |
421 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
422 | |
423 // total overhead size: entry_size + (saved rbp through expr stack | |
424 // bottom). be sure to change this if you add/subtract anything | |
425 // to/from the overhead area | |
426 const int overhead_size = | |
427 -(frame::interpreter_frame_initial_sp_offset * wordSize) + entry_size; | |
428 | |
429 const int page_size = os::vm_page_size(); | |
430 | |
431 Label after_frame_check; | |
432 | |
433 // see if the frame is greater than one page in size. If so, | |
434 // then we need to verify there is enough stack space remaining | |
435 // for the additional locals. | |
1506 | 436 __ cmpl(rdx, (page_size - overhead_size) / Interpreter::stackElementSize); |
0 | 437 __ jcc(Assembler::belowEqual, after_frame_check); |
438 | |
439 // compute rsp as if this were going to be the last frame on | |
440 // the stack before the red zone | |
441 | |
442 const Address stack_base(r15_thread, Thread::stack_base_offset()); | |
443 const Address stack_size(r15_thread, Thread::stack_size_offset()); | |
444 | |
445 // locals + overhead, in bytes | |
304 | 446 __ mov(rax, rdx); |
1506 | 447 __ shlptr(rax, Interpreter::logStackElementSize); // 2 slots per parameter. |
304 | 448 __ addptr(rax, overhead_size); |
0 | 449 |
450 #ifdef ASSERT | |
451 Label stack_base_okay, stack_size_okay; | |
452 // verify that thread stack base is non-zero | |
304 | 453 __ cmpptr(stack_base, (int32_t)NULL_WORD); |
0 | 454 __ jcc(Assembler::notEqual, stack_base_okay); |
455 __ stop("stack base is zero"); | |
456 __ bind(stack_base_okay); | |
457 // verify that thread stack size is non-zero | |
304 | 458 __ cmpptr(stack_size, 0); |
0 | 459 __ jcc(Assembler::notEqual, stack_size_okay); |
460 __ stop("stack size is zero"); | |
461 __ bind(stack_size_okay); | |
462 #endif | |
463 | |
464 // Add stack base to locals and subtract stack size | |
304 | 465 __ addptr(rax, stack_base); |
466 __ subptr(rax, stack_size); | |
0 | 467 |
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468 // Use the maximum number of pages we might bang. |
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469 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : |
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470 (StackRedPages+StackYellowPages); |
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471 |
0 | 472 // add in the red and yellow zone sizes |
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473 __ addptr(rax, max_pages * page_size); |
0 | 474 |
475 // check against the current stack bottom | |
304 | 476 __ cmpptr(rsp, rax); |
0 | 477 __ jcc(Assembler::above, after_frame_check); |
478 | |
4743 | 479 // Restore sender's sp as SP. This is necessary if the sender's |
480 // frame is an extended compiled frame (see gen_c2i_adapter()) | |
481 // and safer anyway in case of JSR292 adaptations. | |
482 | |
483 __ pop(rax); // return address must be moved if SP is changed | |
484 __ mov(rsp, r13); | |
485 __ push(rax); | |
486 | |
487 // Note: the restored frame is not necessarily interpreted. | |
488 // Use the shared runtime version of the StackOverflowError. | |
489 assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated"); | |
490 __ jump(ExternalAddress(StubRoutines::throw_StackOverflowError_entry())); | |
0 | 491 |
492 // all done with frame size check | |
493 __ bind(after_frame_check); | |
494 } | |
495 | |
496 // Allocate monitor and lock method (asm interpreter) | |
497 // | |
498 // Args: | |
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499 // rbx: Method* |
0 | 500 // r14: locals |
501 // | |
502 // Kills: | |
503 // rax | |
504 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, ...(param regs) | |
505 // rscratch1, rscratch2 (scratch regs) | |
506 void InterpreterGenerator::lock_method(void) { | |
507 // synchronize method | |
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508 const Address access_flags(rbx, Method::access_flags_offset()); |
0 | 509 const Address monitor_block_top( |
510 rbp, | |
511 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
512 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
513 | |
514 #ifdef ASSERT | |
515 { | |
516 Label L; | |
517 __ movl(rax, access_flags); | |
518 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
519 __ jcc(Assembler::notZero, L); | |
520 __ stop("method doesn't need synchronization"); | |
521 __ bind(L); | |
522 } | |
523 #endif // ASSERT | |
524 | |
525 // get synchronization object | |
526 { | |
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527 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
0 | 528 Label done; |
529 __ movl(rax, access_flags); | |
530 __ testl(rax, JVM_ACC_STATIC); | |
531 // get receiver (assume this is frequent case) | |
304 | 532 __ movptr(rax, Address(r14, Interpreter::local_offset_in_bytes(0))); |
0 | 533 __ jcc(Assembler::zero, done); |
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534 __ movptr(rax, Address(rbx, Method::const_offset())); |
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535 __ movptr(rax, Address(rax, ConstMethod::constants_offset())); |
304 | 536 __ movptr(rax, Address(rax, |
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537 ConstantPool::pool_holder_offset_in_bytes())); |
304 | 538 __ movptr(rax, Address(rax, mirror_offset)); |
0 | 539 |
540 #ifdef ASSERT | |
541 { | |
542 Label L; | |
304 | 543 __ testptr(rax, rax); |
0 | 544 __ jcc(Assembler::notZero, L); |
545 __ stop("synchronization object is NULL"); | |
546 __ bind(L); | |
547 } | |
548 #endif // ASSERT | |
549 | |
550 __ bind(done); | |
551 } | |
552 | |
553 // add space for monitor & lock | |
304 | 554 __ subptr(rsp, entry_size); // add space for a monitor entry |
555 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
0 | 556 // store object |
304 | 557 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); |
558 __ movptr(c_rarg1, rsp); // object address | |
0 | 559 __ lock_object(c_rarg1); |
560 } | |
561 | |
562 // Generate a fixed interpreter frame. This is identical setup for | |
563 // interpreted methods and for native methods hence the shared code. | |
564 // | |
565 // Args: | |
566 // rax: return address | |
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567 // rbx: Method* |
0 | 568 // r14: pointer to locals |
569 // r13: sender sp | |
570 // rdx: cp cache | |
571 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
572 // initialize fixed part of activation frame | |
304 | 573 __ push(rax); // save return address |
0 | 574 __ enter(); // save old & set new rbp |
304 | 575 __ push(r13); // set sender sp |
576 __ push((int)NULL_WORD); // leave last_sp as null | |
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577 __ movptr(r13, Address(rbx, Method::const_offset())); // get ConstMethod* |
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578 __ lea(r13, Address(r13, ConstMethod::codes_offset())); // get codebase |
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579 __ push(rbx); // save Method* |
0 | 580 if (ProfileInterpreter) { |
581 Label method_data_continue; | |
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582 __ movptr(rdx, Address(rbx, in_bytes(Method::method_data_offset()))); |
304 | 583 __ testptr(rdx, rdx); |
0 | 584 __ jcc(Assembler::zero, method_data_continue); |
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585 __ addptr(rdx, in_bytes(MethodData::data_offset())); |
0 | 586 __ bind(method_data_continue); |
304 | 587 __ push(rdx); // set the mdp (method data pointer) |
0 | 588 } else { |
304 | 589 __ push(0); |
0 | 590 } |
591 | |
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592 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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593 __ movptr(rdx, Address(rdx, ConstMethod::constants_offset())); |
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594 __ movptr(rdx, Address(rdx, ConstantPool::cache_offset_in_bytes())); |
304 | 595 __ push(rdx); // set constant pool cache |
596 __ push(r14); // set locals pointer | |
0 | 597 if (native_call) { |
304 | 598 __ push(0); // no bcp |
0 | 599 } else { |
304 | 600 __ push(r13); // set bcp |
0 | 601 } |
304 | 602 __ push(0); // reserve word for pointer to expression stack bottom |
603 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
0 | 604 } |
605 | |
606 // End of helpers | |
607 | |
304 | 608 // Various method entries |
609 //------------------------------------------------------------------------------------------------------------------------ | |
610 // | |
611 // | |
612 | |
613 // Call an accessor method (assuming it is resolved, otherwise drop | |
614 // into vanilla (slow path) entry | |
615 address InterpreterGenerator::generate_accessor_entry(void) { | |
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616 // rbx: Method* |
304 | 617 |
618 // r13: senderSP must preserver for slow path, set SP to it on fast path | |
619 | |
620 address entry_point = __ pc(); | |
621 Label xreturn_path; | |
622 | |
623 // do fastpath for resolved accessor methods | |
624 if (UseFastAccessorMethods) { | |
625 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites | |
626 // thereof; parameter size = 1 | |
627 // Note: We can only use this code if the getfield has been resolved | |
628 // and if we don't have a null-pointer exception => check for | |
629 // these conditions first and use slow path if necessary. | |
630 Label slow_path; | |
631 // If we need a safepoint check, generate full interpreter entry. | |
632 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
633 SafepointSynchronize::_not_synchronized); | |
634 | |
635 __ jcc(Assembler::notEqual, slow_path); | |
636 // rbx: method | |
637 __ movptr(rax, Address(rsp, wordSize)); | |
638 | |
639 // check if local 0 != NULL and read field | |
640 __ testptr(rax, rax); | |
641 __ jcc(Assembler::zero, slow_path); | |
642 | |
643 // read first instruction word and extract bytecode @ 1 and index @ 2 | |
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644 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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645 __ movptr(rdi, Address(rdx, ConstMethod::constants_offset())); |
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646 __ movl(rdx, Address(rdx, ConstMethod::codes_offset())); |
304 | 647 // Shift codes right to get the index on the right. |
648 // The bytecode fetched looks like <index><0xb4><0x2a> | |
649 __ shrl(rdx, 2 * BitsPerByte); | |
650 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
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651 __ movptr(rdi, Address(rdi, ConstantPool::cache_offset_in_bytes())); |
304 | 652 |
653 // rax: local 0 | |
654 // rbx: method | |
655 // rdx: constant pool cache index | |
656 // rdi: constant pool cache | |
657 | |
658 // check if getfield has been resolved and read constant pool cache entry | |
659 // check the validity of the cache entry by testing whether _indices field | |
660 // contains Bytecode::_getfield in b1 byte. | |
661 assert(in_words(ConstantPoolCacheEntry::size()) == 4, | |
662 "adjust shift below"); | |
663 __ movl(rcx, | |
664 Address(rdi, | |
665 rdx, | |
666 Address::times_8, | |
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667 ConstantPoolCache::base_offset() + |
304 | 668 ConstantPoolCacheEntry::indices_offset())); |
669 __ shrl(rcx, 2 * BitsPerByte); | |
670 __ andl(rcx, 0xFF); | |
671 __ cmpl(rcx, Bytecodes::_getfield); | |
672 __ jcc(Assembler::notEqual, slow_path); | |
673 | |
674 // Note: constant pool entry is not valid before bytecode is resolved | |
675 __ movptr(rcx, | |
676 Address(rdi, | |
677 rdx, | |
678 Address::times_8, | |
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679 ConstantPoolCache::base_offset() + |
304 | 680 ConstantPoolCacheEntry::f2_offset())); |
681 // edx: flags | |
682 __ movl(rdx, | |
683 Address(rdi, | |
684 rdx, | |
685 Address::times_8, | |
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686 ConstantPoolCache::base_offset() + |
304 | 687 ConstantPoolCacheEntry::flags_offset())); |
688 | |
689 Label notObj, notInt, notByte, notShort; | |
690 const Address field_address(rax, rcx, Address::times_1); | |
691 | |
692 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
693 // because they are different sizes. | |
694 // Use the type from the constant pool cache | |
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695 __ shrl(rdx, ConstantPoolCacheEntry::tos_state_shift); |
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696 // Make sure we don't need to mask edx after the above shift |
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697 ConstantPoolCacheEntry::verify_tos_state_shift(); |
304 | 698 |
699 __ cmpl(rdx, atos); | |
700 __ jcc(Assembler::notEqual, notObj); | |
701 // atos | |
702 __ load_heap_oop(rax, field_address); | |
703 __ jmp(xreturn_path); | |
704 | |
705 __ bind(notObj); | |
706 __ cmpl(rdx, itos); | |
707 __ jcc(Assembler::notEqual, notInt); | |
708 // itos | |
709 __ movl(rax, field_address); | |
710 __ jmp(xreturn_path); | |
711 | |
712 __ bind(notInt); | |
713 __ cmpl(rdx, btos); | |
714 __ jcc(Assembler::notEqual, notByte); | |
715 // btos | |
716 __ load_signed_byte(rax, field_address); | |
717 __ jmp(xreturn_path); | |
718 | |
719 __ bind(notByte); | |
720 __ cmpl(rdx, stos); | |
721 __ jcc(Assembler::notEqual, notShort); | |
722 // stos | |
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723 __ load_signed_short(rax, field_address); |
304 | 724 __ jmp(xreturn_path); |
725 | |
726 __ bind(notShort); | |
727 #ifdef ASSERT | |
728 Label okay; | |
729 __ cmpl(rdx, ctos); | |
730 __ jcc(Assembler::equal, okay); | |
731 __ stop("what type is this?"); | |
732 __ bind(okay); | |
733 #endif | |
734 // ctos | |
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735 __ load_unsigned_short(rax, field_address); |
304 | 736 |
737 __ bind(xreturn_path); | |
738 | |
739 // _ireturn/_areturn | |
740 __ pop(rdi); | |
741 __ mov(rsp, r13); | |
742 __ jmp(rdi); | |
743 __ ret(0); | |
744 | |
745 // generate a vanilla interpreter entry as the slow path | |
746 __ bind(slow_path); | |
747 (void) generate_normal_entry(false); | |
748 } else { | |
749 (void) generate_normal_entry(false); | |
750 } | |
751 | |
752 return entry_point; | |
753 } | |
754 | |
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755 // Method entry for java.lang.ref.Reference.get. |
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756 address InterpreterGenerator::generate_Reference_get_entry(void) { |
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757 #if INCLUDE_ALL_GCS |
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758 // Code: _aload_0, _getfield, _areturn |
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759 // parameter size = 1 |
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760 // |
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761 // The code that gets generated by this routine is split into 2 parts: |
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762 // 1. The "intrinsified" code for G1 (or any SATB based GC), |
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763 // 2. The slow path - which is an expansion of the regular method entry. |
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764 // |
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765 // Notes:- |
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766 // * In the G1 code we do not check whether we need to block for |
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767 // a safepoint. If G1 is enabled then we must execute the specialized |
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768 // code for Reference.get (except when the Reference object is null) |
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769 // so that we can log the value in the referent field with an SATB |
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770 // update buffer. |
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771 // If the code for the getfield template is modified so that the |
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772 // G1 pre-barrier code is executed when the current method is |
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773 // Reference.get() then going through the normal method entry |
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774 // will be fine. |
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775 // * The G1 code can, however, check the receiver object (the instance |
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776 // of java.lang.Reference) and jump to the slow path if null. If the |
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777 // Reference object is null then we obviously cannot fetch the referent |
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778 // and so we don't need to call the G1 pre-barrier. Thus we can use the |
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779 // regular method entry code to generate the NPE. |
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780 // |
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781 // This code is based on generate_accessor_enty. |
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782 // |
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783 // rbx: Method* |
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784 |
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785 // r13: senderSP must preserve for slow path, set SP to it on fast path |
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786 |
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787 address entry = __ pc(); |
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788 |
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789 const int referent_offset = java_lang_ref_Reference::referent_offset; |
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790 guarantee(referent_offset > 0, "referent offset not initialized"); |
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791 |
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792 if (UseG1GC) { |
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793 Label slow_path; |
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794 // rbx: method |
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795 |
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796 // Check if local 0 != NULL |
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797 // If the receiver is null then it is OK to jump to the slow path. |
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798 __ movptr(rax, Address(rsp, wordSize)); |
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799 |
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800 __ testptr(rax, rax); |
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801 __ jcc(Assembler::zero, slow_path); |
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802 |
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803 // rax: local 0 |
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804 // rbx: method (but can be used as scratch now) |
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805 // rdx: scratch |
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806 // rdi: scratch |
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807 |
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808 // Generate the G1 pre-barrier code to log the value of |
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809 // the referent field in an SATB buffer. |
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810 |
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811 // Load the value of the referent field. |
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812 const Address field_address(rax, referent_offset); |
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813 __ load_heap_oop(rax, field_address); |
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814 |
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815 // Generate the G1 pre-barrier code to log the value of |
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816 // the referent field in an SATB buffer. |
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817 __ g1_write_barrier_pre(noreg /* obj */, |
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818 rax /* pre_val */, |
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819 r15_thread /* thread */, |
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820 rbx /* tmp */, |
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821 true /* tosca_live */, |
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822 true /* expand_call */); |
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823 |
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824 // _areturn |
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825 __ pop(rdi); // get return address |
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826 __ mov(rsp, r13); // set sp to sender sp |
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827 __ jmp(rdi); |
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828 __ ret(0); |
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829 |
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830 // generate a vanilla interpreter entry as the slow path |
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831 __ bind(slow_path); |
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832 (void) generate_normal_entry(false); |
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833 |
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834 return entry; |
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835 } |
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836 #endif // INCLUDE_ALL_GCS |
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837 |
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838 // If G1 is not enabled then attempt to go through the accessor entry point |
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839 // Reference.get is an accessor |
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840 return generate_accessor_entry(); |
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841 } |
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842 |
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843 |
0 | 844 // Interpreter stub for calling a native method. (asm interpreter) |
845 // This sets up a somewhat different looking stack for calling the | |
846 // native method than the typical interpreter frame setup. | |
847 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
848 // determine code generation flags | |
849 bool inc_counter = UseCompiler || CountCompiledCalls; | |
850 | |
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851 // rbx: Method* |
0 | 852 // r13: sender sp |
853 | |
854 address entry_point = __ pc(); | |
855 | |
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856 const Address constMethod (rbx, Method::const_offset()); |
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857 const Address access_flags (rbx, Method::access_flags_offset()); |
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858 const Address size_of_parameters(rcx, ConstMethod:: |
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859 size_of_parameters_offset()); |
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860 |
0 | 861 |
862 // get parameter size (always needed) | |
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863 __ movptr(rcx, constMethod); |
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864 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 865 |
866 // native calls don't need the stack size check since they have no | |
867 // expression stack and the arguments are already on the stack and | |
868 // we only add a handful of words to the stack | |
869 | |
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870 // rbx: Method* |
0 | 871 // rcx: size of parameters |
872 // r13: sender sp | |
304 | 873 __ pop(rax); // get return address |
0 | 874 |
875 // for natives the size of locals is zero | |
876 | |
877 // compute beginning of parameters (r14) | |
304 | 878 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
0 | 879 |
880 // add 2 zero-initialized slots for native calls | |
881 // initialize result_handler slot | |
304 | 882 __ push((int) NULL_WORD); |
0 | 883 // slot for oop temp |
884 // (static native method holder mirror/jni oop result) | |
304 | 885 __ push((int) NULL_WORD); |
0 | 886 |
887 // initialize fixed part of activation frame | |
888 generate_fixed_frame(true); | |
889 | |
890 // make sure method is native & not abstract | |
891 #ifdef ASSERT | |
892 __ movl(rax, access_flags); | |
893 { | |
894 Label L; | |
895 __ testl(rax, JVM_ACC_NATIVE); | |
896 __ jcc(Assembler::notZero, L); | |
897 __ stop("tried to execute non-native method as native"); | |
898 __ bind(L); | |
899 } | |
900 { | |
901 Label L; | |
902 __ testl(rax, JVM_ACC_ABSTRACT); | |
903 __ jcc(Assembler::zero, L); | |
904 __ stop("tried to execute abstract method in interpreter"); | |
905 __ bind(L); | |
906 } | |
907 #endif | |
908 | |
909 // Since at this point in the method invocation the exception handler | |
910 // would try to exit the monitor of synchronized methods which hasn't | |
911 // been entered yet, we set the thread local variable | |
912 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
913 // check this flag. | |
914 | |
915 const Address do_not_unlock_if_synchronized(r15_thread, | |
916 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
917 __ movbool(do_not_unlock_if_synchronized, true); | |
918 | |
919 // increment invocation count & check for overflow | |
920 Label invocation_counter_overflow; | |
921 if (inc_counter) { | |
922 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
923 } | |
924 | |
925 Label continue_after_compile; | |
926 __ bind(continue_after_compile); | |
927 | |
928 bang_stack_shadow_pages(true); | |
929 | |
930 // reset the _do_not_unlock_if_synchronized flag | |
931 __ movbool(do_not_unlock_if_synchronized, false); | |
932 | |
933 // check for synchronized methods | |
934 // Must happen AFTER invocation_counter check and stack overflow check, | |
935 // so method is not locked if overflows. | |
936 if (synchronized) { | |
937 lock_method(); | |
938 } else { | |
939 // no synchronization necessary | |
940 #ifdef ASSERT | |
941 { | |
942 Label L; | |
943 __ movl(rax, access_flags); | |
944 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
945 __ jcc(Assembler::zero, L); | |
946 __ stop("method needs synchronization"); | |
947 __ bind(L); | |
948 } | |
949 #endif | |
950 } | |
951 | |
952 // start execution | |
953 #ifdef ASSERT | |
954 { | |
955 Label L; | |
956 const Address monitor_block_top(rbp, | |
957 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 958 __ movptr(rax, monitor_block_top); |
959 __ cmpptr(rax, rsp); | |
0 | 960 __ jcc(Assembler::equal, L); |
961 __ stop("broken stack frame setup in interpreter"); | |
962 __ bind(L); | |
963 } | |
964 #endif | |
965 | |
966 // jvmti support | |
967 __ notify_method_entry(); | |
968 | |
969 // work registers | |
970 const Register method = rbx; | |
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971 const Register t = r11; |
0 | 972 |
973 // allocate space for parameters | |
974 __ get_method(method); | |
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975 __ movptr(t, Address(method, Method::const_offset())); |
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976 __ load_unsigned_short(t, Address(t, ConstMethod::size_of_parameters_offset())); |
1506 | 977 __ shll(t, Interpreter::logStackElementSize); |
0 | 978 |
304 | 979 __ subptr(rsp, t); |
980 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows | |
605 | 981 __ andptr(rsp, -16); // must be 16 byte boundary (see amd64 ABI) |
0 | 982 |
983 // get signature handler | |
984 { | |
985 Label L; | |
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986 __ movptr(t, Address(method, Method::signature_handler_offset())); |
304 | 987 __ testptr(t, t); |
0 | 988 __ jcc(Assembler::notZero, L); |
989 __ call_VM(noreg, | |
990 CAST_FROM_FN_PTR(address, | |
991 InterpreterRuntime::prepare_native_call), | |
992 method); | |
993 __ get_method(method); | |
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994 __ movptr(t, Address(method, Method::signature_handler_offset())); |
0 | 995 __ bind(L); |
996 } | |
997 | |
998 // call signature handler | |
999 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == r14, | |
1000 "adjust this code"); | |
1001 assert(InterpreterRuntime::SignatureHandlerGenerator::to() == rsp, | |
1002 "adjust this code"); | |
1003 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == rscratch1, | |
1004 "adjust this code"); | |
1005 | |
1006 // The generated handlers do not touch RBX (the method oop). | |
1007 // However, large signatures cannot be cached and are generated | |
1008 // each time here. The slow-path generator can do a GC on return, | |
1009 // so we must reload it after the call. | |
1010 __ call(t); | |
1011 __ get_method(method); // slow path can do a GC, reload RBX | |
1012 | |
1013 | |
1014 // result handler is in rax | |
1015 // set result handler | |
304 | 1016 __ movptr(Address(rbp, |
1017 (frame::interpreter_frame_result_handler_offset) * wordSize), | |
1018 rax); | |
0 | 1019 |
1020 // pass mirror handle if static call | |
1021 { | |
1022 Label L; | |
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1023 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
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1024 __ movl(t, Address(method, Method::access_flags_offset())); |
0 | 1025 __ testl(t, JVM_ACC_STATIC); |
1026 __ jcc(Assembler::zero, L); | |
1027 // get mirror | |
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1028 __ movptr(t, Address(method, Method::const_offset())); |
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1029 __ movptr(t, Address(t, ConstMethod::constants_offset())); |
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1030 __ movptr(t, Address(t, ConstantPool::pool_holder_offset_in_bytes())); |
304 | 1031 __ movptr(t, Address(t, mirror_offset)); |
0 | 1032 // copy mirror into activation frame |
304 | 1033 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), |
0 | 1034 t); |
1035 // pass handle to mirror | |
304 | 1036 __ lea(c_rarg1, |
1037 Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); | |
0 | 1038 __ bind(L); |
1039 } | |
1040 | |
1041 // get native function entry point | |
1042 { | |
1043 Label L; | |
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1044 __ movptr(rax, Address(method, Method::native_function_offset())); |
0 | 1045 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
1046 __ movptr(rscratch2, unsatisfied.addr()); | |
304 | 1047 __ cmpptr(rax, rscratch2); |
0 | 1048 __ jcc(Assembler::notEqual, L); |
1049 __ call_VM(noreg, | |
1050 CAST_FROM_FN_PTR(address, | |
1051 InterpreterRuntime::prepare_native_call), | |
1052 method); | |
1053 __ get_method(method); | |
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1054 __ movptr(rax, Address(method, Method::native_function_offset())); |
0 | 1055 __ bind(L); |
1056 } | |
1057 | |
1058 // pass JNIEnv | |
304 | 1059 __ lea(c_rarg0, Address(r15_thread, JavaThread::jni_environment_offset())); |
0 | 1060 |
1061 // It is enough that the pc() points into the right code | |
1062 // segment. It does not have to be the correct return pc. | |
1063 __ set_last_Java_frame(rsp, rbp, (address) __ pc()); | |
1064 | |
1065 // change thread state | |
1066 #ifdef ASSERT | |
1067 { | |
1068 Label L; | |
1069 __ movl(t, Address(r15_thread, JavaThread::thread_state_offset())); | |
1070 __ cmpl(t, _thread_in_Java); | |
1071 __ jcc(Assembler::equal, L); | |
1072 __ stop("Wrong thread state in native stub"); | |
1073 __ bind(L); | |
1074 } | |
1075 #endif | |
1076 | |
1077 // Change state to native | |
1078 | |
1079 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
1080 _thread_in_native); | |
1081 | |
1082 // Call the native method. | |
1083 __ call(rax); | |
1084 // result potentially in rax or xmm0 | |
1085 | |
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1086 // Verify or restore cpu control state after JNI call |
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1087 __ restore_cpu_control_state_after_jni(); |
0 | 1088 |
1089 // NOTE: The order of these pushes is known to frame::interpreter_frame_result | |
1090 // in order to extract the result of a method call. If the order of these | |
1091 // pushes change or anything else is added to the stack then the code in | |
1092 // interpreter_frame_result must also change. | |
1093 | |
1094 __ push(dtos); | |
1095 __ push(ltos); | |
1096 | |
1097 // change thread state | |
1098 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
1099 _thread_in_native_trans); | |
1100 | |
1101 if (os::is_MP()) { | |
1102 if (UseMembar) { | |
1103 // Force this write out before the read below | |
1104 __ membar(Assembler::Membar_mask_bits( | |
1105 Assembler::LoadLoad | Assembler::LoadStore | | |
1106 Assembler::StoreLoad | Assembler::StoreStore)); | |
1107 } else { | |
1108 // Write serialization page so VM thread can do a pseudo remote membar. | |
1109 // We use the current thread pointer to calculate a thread specific | |
1110 // offset to write to within the page. This minimizes bus traffic | |
1111 // due to cache line collision. | |
1112 __ serialize_memory(r15_thread, rscratch2); | |
1113 } | |
1114 } | |
1115 | |
1116 // check for safepoint operation in progress and/or pending suspend requests | |
1117 { | |
1118 Label Continue; | |
1119 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
1120 SafepointSynchronize::_not_synchronized); | |
1121 | |
1122 Label L; | |
1123 __ jcc(Assembler::notEqual, L); | |
1124 __ cmpl(Address(r15_thread, JavaThread::suspend_flags_offset()), 0); | |
1125 __ jcc(Assembler::equal, Continue); | |
1126 __ bind(L); | |
1127 | |
1128 // Don't use call_VM as it will see a possible pending exception | |
1129 // and forward it and never return here preventing us from | |
1130 // clearing _last_native_pc down below. Also can't use | |
1131 // call_VM_leaf either as it will check to see if r13 & r14 are | |
1132 // preserved and correspond to the bcp/locals pointers. So we do a | |
1133 // runtime call by hand. | |
1134 // | |
304 | 1135 __ mov(c_rarg0, r15_thread); |
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1136 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1137 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
1138 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1139 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans))); |
304 | 1140 __ mov(rsp, r12); // restore sp |
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1141 __ reinit_heapbase(); |
0 | 1142 __ bind(Continue); |
1143 } | |
1144 | |
1145 // change thread state | |
1146 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
1147 | |
1148 // reset_last_Java_frame | |
1149 __ reset_last_Java_frame(true, true); | |
1150 | |
1151 // reset handle block | |
304 | 1152 __ movptr(t, Address(r15_thread, JavaThread::active_handles_offset())); |
1153 __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD); | |
0 | 1154 |
1155 // If result is an oop unbox and store it in frame where gc will see it | |
1156 // and result handler will pick it up | |
1157 | |
1158 { | |
1159 Label no_oop, store_result; | |
1160 __ lea(t, ExternalAddress(AbstractInterpreter::result_handler(T_OBJECT))); | |
304 | 1161 __ cmpptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
0 | 1162 __ jcc(Assembler::notEqual, no_oop); |
1163 // retrieve result | |
1164 __ pop(ltos); | |
304 | 1165 __ testptr(rax, rax); |
0 | 1166 __ jcc(Assembler::zero, store_result); |
304 | 1167 __ movptr(rax, Address(rax, 0)); |
0 | 1168 __ bind(store_result); |
304 | 1169 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize), rax); |
0 | 1170 // keep stack depth as expected by pushing oop which will eventually be discarde |
1171 __ push(ltos); | |
1172 __ bind(no_oop); | |
1173 } | |
1174 | |
1175 | |
1176 { | |
1177 Label no_reguard; | |
1178 __ cmpl(Address(r15_thread, JavaThread::stack_guard_state_offset()), | |
1179 JavaThread::stack_guard_yellow_disabled); | |
1180 __ jcc(Assembler::notEqual, no_reguard); | |
1181 | |
304 | 1182 __ pusha(); // XXX only save smashed registers |
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1183 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1184 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
1185 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1186 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
304 | 1187 __ mov(rsp, r12); // restore sp |
1188 __ popa(); // XXX only restore smashed registers | |
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1189 __ reinit_heapbase(); |
0 | 1190 |
1191 __ bind(no_reguard); | |
1192 } | |
1193 | |
1194 | |
1195 // The method register is junk from after the thread_in_native transition | |
1196 // until here. Also can't call_VM until the bcp has been | |
1197 // restored. Need bcp for throwing exception below so get it now. | |
1198 __ get_method(method); | |
1199 | |
1200 // restore r13 to have legal interpreter frame, i.e., bci == 0 <=> | |
1201 // r13 == code_base() | |
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1202 __ movptr(r13, Address(method, Method::const_offset())); // get ConstMethod* |
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1203 __ lea(r13, Address(r13, ConstMethod::codes_offset())); // get codebase |
0 | 1204 // handle exceptions (exception handling will handle unlocking!) |
1205 { | |
1206 Label L; | |
304 | 1207 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
0 | 1208 __ jcc(Assembler::zero, L); |
1209 // Note: At some point we may want to unify this with the code | |
1210 // used in call_VM_base(); i.e., we should use the | |
1211 // StubRoutines::forward_exception code. For now this doesn't work | |
1212 // here because the rsp is not correctly set at this point. | |
1213 __ MacroAssembler::call_VM(noreg, | |
1214 CAST_FROM_FN_PTR(address, | |
1215 InterpreterRuntime::throw_pending_exception)); | |
1216 __ should_not_reach_here(); | |
1217 __ bind(L); | |
1218 } | |
1219 | |
1220 // do unlocking if necessary | |
1221 { | |
1222 Label L; | |
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1223 __ movl(t, Address(method, Method::access_flags_offset())); |
0 | 1224 __ testl(t, JVM_ACC_SYNCHRONIZED); |
1225 __ jcc(Assembler::zero, L); | |
1226 // the code below should be shared with interpreter macro | |
1227 // assembler implementation | |
1228 { | |
1229 Label unlock; | |
1230 // BasicObjectLock will be first in list, since this is a | |
1231 // synchronized method. However, need to check that the object | |
1232 // has not been unlocked by an explicit monitorexit bytecode. | |
1233 const Address monitor(rbp, | |
1234 (intptr_t)(frame::interpreter_frame_initial_sp_offset * | |
1235 wordSize - sizeof(BasicObjectLock))); | |
1236 | |
1237 // monitor expect in c_rarg1 for slow unlock path | |
304 | 1238 __ lea(c_rarg1, monitor); // address of first monitor |
0 | 1239 |
304 | 1240 __ movptr(t, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
1241 __ testptr(t, t); | |
0 | 1242 __ jcc(Assembler::notZero, unlock); |
1243 | |
1244 // Entry already unlocked, need to throw exception | |
1245 __ MacroAssembler::call_VM(noreg, | |
1246 CAST_FROM_FN_PTR(address, | |
1247 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
1248 __ should_not_reach_here(); | |
1249 | |
1250 __ bind(unlock); | |
1251 __ unlock_object(c_rarg1); | |
1252 } | |
1253 __ bind(L); | |
1254 } | |
1255 | |
1256 // jvmti support | |
1257 // Note: This must happen _after_ handling/throwing any exceptions since | |
1258 // the exception handler code notifies the runtime of method exits | |
1259 // too. If this happens before, method entry/exit notifications are | |
1260 // not properly paired (was bug - gri 11/22/99). | |
1261 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
1262 | |
1263 // restore potential result in edx:eax, call result handler to | |
1264 // restore potential result in ST0 & handle result | |
1265 | |
1266 __ pop(ltos); | |
1267 __ pop(dtos); | |
1268 | |
304 | 1269 __ movptr(t, Address(rbp, |
1270 (frame::interpreter_frame_result_handler_offset) * wordSize)); | |
0 | 1271 __ call(t); |
1272 | |
1273 // remove activation | |
304 | 1274 __ movptr(t, Address(rbp, |
1275 frame::interpreter_frame_sender_sp_offset * | |
1276 wordSize)); // get sender sp | |
0 | 1277 __ leave(); // remove frame anchor |
304 | 1278 __ pop(rdi); // get return address |
1279 __ mov(rsp, t); // set sp to sender sp | |
0 | 1280 __ jmp(rdi); |
1281 | |
1282 if (inc_counter) { | |
1283 // Handle overflow of counter and compile method | |
1284 __ bind(invocation_counter_overflow); | |
1285 generate_counter_overflow(&continue_after_compile); | |
1286 } | |
1287 | |
1288 return entry_point; | |
1289 } | |
1290 | |
1291 // | |
1292 // Generic interpreted method entry to (asm) interpreter | |
1293 // | |
1294 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
1295 // determine code generation flags | |
1296 bool inc_counter = UseCompiler || CountCompiledCalls; | |
1297 | |
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1298 // ebx: Method* |
0 | 1299 // r13: sender sp |
1300 address entry_point = __ pc(); | |
1301 | |
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1302 const Address constMethod(rbx, Method::const_offset()); |
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1303 const Address access_flags(rbx, Method::access_flags_offset()); |
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1304 const Address size_of_parameters(rdx, |
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1305 ConstMethod::size_of_parameters_offset()); |
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1306 const Address size_of_locals(rdx, ConstMethod::size_of_locals_offset()); |
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1307 |
0 | 1308 |
1309 // get parameter size (always needed) | |
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1310 __ movptr(rdx, constMethod); |
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1311 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 1312 |
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1313 // rbx: Method* |
0 | 1314 // rcx: size of parameters |
1315 // r13: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
1316 | |
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1317 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
0 | 1318 __ subl(rdx, rcx); // rdx = no. of additional locals |
1319 | |
1320 // YYY | |
1321 // __ incrementl(rdx); | |
1322 // __ andl(rdx, -2); | |
1323 | |
1324 // see if we've got enough room on the stack for locals plus overhead. | |
1325 generate_stack_overflow_check(); | |
1326 | |
1327 // get return address | |
304 | 1328 __ pop(rax); |
0 | 1329 |
1330 // compute beginning of parameters (r14) | |
304 | 1331 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
0 | 1332 |
1333 // rdx - # of additional locals | |
1334 // allocate space for locals | |
1335 // explicitly initialize locals | |
1336 { | |
1337 Label exit, loop; | |
1338 __ testl(rdx, rdx); | |
1339 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 | |
1340 __ bind(loop); | |
304 | 1341 __ push((int) NULL_WORD); // initialize local variables |
0 | 1342 __ decrementl(rdx); // until everything initialized |
1343 __ jcc(Assembler::greater, loop); | |
1344 __ bind(exit); | |
1345 } | |
1346 | |
1347 // initialize fixed part of activation frame | |
1348 generate_fixed_frame(false); | |
1349 | |
1350 // make sure method is not native & not abstract | |
1351 #ifdef ASSERT | |
1352 __ movl(rax, access_flags); | |
1353 { | |
1354 Label L; | |
1355 __ testl(rax, JVM_ACC_NATIVE); | |
1356 __ jcc(Assembler::zero, L); | |
1357 __ stop("tried to execute native method as non-native"); | |
1358 __ bind(L); | |
1359 } | |
1360 { | |
1361 Label L; | |
1362 __ testl(rax, JVM_ACC_ABSTRACT); | |
1363 __ jcc(Assembler::zero, L); | |
1364 __ stop("tried to execute abstract method in interpreter"); | |
1365 __ bind(L); | |
1366 } | |
1367 #endif | |
1368 | |
1369 // Since at this point in the method invocation the exception | |
1370 // handler would try to exit the monitor of synchronized methods | |
1371 // which hasn't been entered yet, we set the thread local variable | |
1372 // _do_not_unlock_if_synchronized to true. The remove_activation | |
1373 // will check this flag. | |
1374 | |
1375 const Address do_not_unlock_if_synchronized(r15_thread, | |
1376 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
1377 __ movbool(do_not_unlock_if_synchronized, true); | |
1378 | |
1379 // increment invocation count & check for overflow | |
1380 Label invocation_counter_overflow; | |
1381 Label profile_method; | |
1382 Label profile_method_continue; | |
1383 if (inc_counter) { | |
1384 generate_counter_incr(&invocation_counter_overflow, | |
1385 &profile_method, | |
1386 &profile_method_continue); | |
1387 if (ProfileInterpreter) { | |
1388 __ bind(profile_method_continue); | |
1389 } | |
1390 } | |
1391 | |
1392 Label continue_after_compile; | |
1393 __ bind(continue_after_compile); | |
1394 | |
1395 // check for synchronized interpreted methods | |
1396 bang_stack_shadow_pages(false); | |
1397 | |
1398 // reset the _do_not_unlock_if_synchronized flag | |
1399 __ movbool(do_not_unlock_if_synchronized, false); | |
1400 | |
1401 // check for synchronized methods | |
1402 // Must happen AFTER invocation_counter check and stack overflow check, | |
1403 // so method is not locked if overflows. | |
1404 if (synchronized) { | |
1405 // Allocate monitor and lock method | |
1406 lock_method(); | |
1407 } else { | |
1408 // no synchronization necessary | |
1409 #ifdef ASSERT | |
1410 { | |
1411 Label L; | |
1412 __ movl(rax, access_flags); | |
1413 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
1414 __ jcc(Assembler::zero, L); | |
1415 __ stop("method needs synchronization"); | |
1416 __ bind(L); | |
1417 } | |
1418 #endif | |
1419 } | |
1420 | |
1421 // start execution | |
1422 #ifdef ASSERT | |
1423 { | |
1424 Label L; | |
1425 const Address monitor_block_top (rbp, | |
1426 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 1427 __ movptr(rax, monitor_block_top); |
1428 __ cmpptr(rax, rsp); | |
0 | 1429 __ jcc(Assembler::equal, L); |
1430 __ stop("broken stack frame setup in interpreter"); | |
1431 __ bind(L); | |
1432 } | |
1433 #endif | |
1434 | |
1435 // jvmti support | |
1436 __ notify_method_entry(); | |
1437 | |
1438 __ dispatch_next(vtos); | |
1439 | |
1440 // invocation counter overflow | |
1441 if (inc_counter) { | |
1442 if (ProfileInterpreter) { | |
1443 // We have decided to profile this method in the interpreter | |
1444 __ bind(profile_method); | |
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1445 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
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1446 __ set_method_data_pointer_for_bcp(); |
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1447 __ get_method(rbx); |
0 | 1448 __ jmp(profile_method_continue); |
1449 } | |
1450 // Handle overflow of counter and compile method | |
1451 __ bind(invocation_counter_overflow); | |
1452 generate_counter_overflow(&continue_after_compile); | |
1453 } | |
1454 | |
1455 return entry_point; | |
1456 } | |
1457 | |
1458 // Entry points | |
1459 // | |
1460 // Here we generate the various kind of entries into the interpreter. | |
1461 // The two main entry type are generic bytecode methods and native | |
1462 // call method. These both come in synchronized and non-synchronized | |
1463 // versions but the frame layout they create is very similar. The | |
1464 // other method entry types are really just special purpose entries | |
1465 // that are really entry and interpretation all in one. These are for | |
1466 // trivial methods like accessor, empty, or special math methods. | |
1467 // | |
1468 // When control flow reaches any of the entry types for the interpreter | |
1469 // the following holds -> | |
1470 // | |
1471 // Arguments: | |
1472 // | |
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1473 // rbx: Method* |
0 | 1474 // |
1475 // Stack layout immediately at entry | |
1476 // | |
1477 // [ return address ] <--- rsp | |
1478 // [ parameter n ] | |
1479 // ... | |
1480 // [ parameter 1 ] | |
1481 // [ expression stack ] (caller's java expression stack) | |
1482 | |
1483 // Assuming that we don't go to one of the trivial specialized entries | |
1484 // the stack will look like below when we are ready to execute the | |
1485 // first bytecode (or call the native routine). The register usage | |
1486 // will be as the template based interpreter expects (see | |
1487 // interpreter_amd64.hpp). | |
1488 // | |
1489 // local variables follow incoming parameters immediately; i.e. | |
1490 // the return address is moved to the end of the locals). | |
1491 // | |
1492 // [ monitor entry ] <--- rsp | |
1493 // ... | |
1494 // [ monitor entry ] | |
1495 // [ expr. stack bottom ] | |
1496 // [ saved r13 ] | |
1497 // [ current r14 ] | |
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1498 // [ Method* ] |
0 | 1499 // [ saved ebp ] <--- rbp |
1500 // [ return address ] | |
1501 // [ local variable m ] | |
1502 // ... | |
1503 // [ local variable 1 ] | |
1504 // [ parameter n ] | |
1505 // ... | |
1506 // [ parameter 1 ] <--- r14 | |
1507 | |
1508 address AbstractInterpreterGenerator::generate_method_entry( | |
1509 AbstractInterpreter::MethodKind kind) { | |
1510 // determine code generation flags | |
1511 bool synchronized = false; | |
1512 address entry_point = NULL; | |
1513 | |
1514 switch (kind) { | |
1515 case Interpreter::zerolocals : break; | |
1516 case Interpreter::zerolocals_synchronized: synchronized = true; break; | |
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1517 case Interpreter::native : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(false); break; |
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1518 case Interpreter::native_synchronized : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(true); break; |
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1519 case Interpreter::empty : entry_point = ((InterpreterGenerator*)this)->generate_empty_entry(); break; |
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1520 case Interpreter::accessor : entry_point = ((InterpreterGenerator*)this)->generate_accessor_entry(); break; |
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1521 case Interpreter::abstract : entry_point = ((InterpreterGenerator*)this)->generate_abstract_entry(); break; |
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1522 |
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1523 case Interpreter::java_lang_math_sin : // fall thru |
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1524 case Interpreter::java_lang_math_cos : // fall thru |
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1525 case Interpreter::java_lang_math_tan : // fall thru |
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1526 case Interpreter::java_lang_math_abs : // fall thru |
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1527 case Interpreter::java_lang_math_log : // fall thru |
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1528 case Interpreter::java_lang_math_log10 : // fall thru |
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1529 case Interpreter::java_lang_math_sqrt : // fall thru |
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1530 case Interpreter::java_lang_math_pow : // fall thru |
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1531 case Interpreter::java_lang_math_exp : entry_point = ((InterpreterGenerator*)this)->generate_math_entry(kind); break; |
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1532 case Interpreter::java_lang_ref_reference_get |
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1533 : entry_point = ((InterpreterGenerator*)this)->generate_Reference_get_entry(); break; |
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1534 default: |
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1535 fatal(err_msg("unexpected method kind: %d", kind)); |
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1536 break; |
0 | 1537 } |
1538 | |
1539 if (entry_point) { | |
1540 return entry_point; | |
1541 } | |
1542 | |
1543 return ((InterpreterGenerator*) this)-> | |
1544 generate_normal_entry(synchronized); | |
1545 } | |
1546 | |
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1547 // These should never be compiled since the interpreter will prefer |
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1548 // the compiled version to the intrinsic version. |
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1549 bool AbstractInterpreter::can_be_compiled(methodHandle m) { |
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1550 switch (method_kind(m)) { |
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1551 case Interpreter::java_lang_math_sin : // fall thru |
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1552 case Interpreter::java_lang_math_cos : // fall thru |
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1553 case Interpreter::java_lang_math_tan : // fall thru |
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1554 case Interpreter::java_lang_math_abs : // fall thru |
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1555 case Interpreter::java_lang_math_log : // fall thru |
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1556 case Interpreter::java_lang_math_log10 : // fall thru |
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1557 case Interpreter::java_lang_math_sqrt : // fall thru |
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1558 case Interpreter::java_lang_math_pow : // fall thru |
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1559 case Interpreter::java_lang_math_exp : |
1174
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1560 return false; |
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1561 default: |
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1562 return true; |
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1563 } |
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1564 } |
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1565 |
0 | 1566 // How much stack a method activation needs in words. |
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1567 int AbstractInterpreter::size_top_interpreter_activation(Method* method) { |
0 | 1568 const int entry_size = frame::interpreter_frame_monitor_size(); |
1569 | |
1570 // total overhead size: entry_size + (saved rbp thru expr stack | |
1571 // bottom). be sure to change this if you add/subtract anything | |
1572 // to/from the overhead area | |
1573 const int overhead_size = | |
1574 -(frame::interpreter_frame_initial_sp_offset) + entry_size; | |
1575 | |
1576 const int stub_code = frame::entry_frame_after_call_words; | |
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1577 const int extra_stack = Method::extra_stack_entries(); |
710 | 1578 const int method_stack = (method->max_locals() + method->max_stack() + extra_stack) * |
1506 | 1579 Interpreter::stackElementWords; |
0 | 1580 return (overhead_size + method_stack + stub_code); |
1581 } | |
1582 | |
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1583 int AbstractInterpreter::layout_activation(Method* method, |
0 | 1584 int tempcount, |
1585 int popframe_extra_args, | |
1586 int moncount, | |
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1587 int caller_actual_parameters, |
0 | 1588 int callee_param_count, |
1589 int callee_locals, | |
1590 frame* caller, | |
1591 frame* interpreter_frame, | |
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1592 bool is_top_frame, |
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1593 bool is_bottom_frame) { |
0 | 1594 // Note: This calculation must exactly parallel the frame setup |
1595 // in AbstractInterpreterGenerator::generate_method_entry. | |
1596 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
1597 // The frame interpreter_frame, if not NULL, is guaranteed to be the | |
1598 // right size, as determined by a previous call to this method. | |
1599 // It is also guaranteed to be walkable even though it is in a skeletal state | |
1600 | |
1601 // fixed size of an interpreter frame: | |
1506 | 1602 int max_locals = method->max_locals() * Interpreter::stackElementWords; |
0 | 1603 int extra_locals = (method->max_locals() - method->size_of_parameters()) * |
1506 | 1604 Interpreter::stackElementWords; |
0 | 1605 |
1606 int overhead = frame::sender_sp_offset - | |
1607 frame::interpreter_frame_initial_sp_offset; | |
1608 // Our locals were accounted for by the caller (or last_frame_adjust | |
1609 // on the transistion) Since the callee parameters already account | |
1610 // for the callee's params we only need to account for the extra | |
1611 // locals. | |
1612 int size = overhead + | |
1506 | 1613 (callee_locals - callee_param_count)*Interpreter::stackElementWords + |
0 | 1614 moncount * frame::interpreter_frame_monitor_size() + |
1506 | 1615 tempcount* Interpreter::stackElementWords + popframe_extra_args; |
0 | 1616 if (interpreter_frame != NULL) { |
1617 #ifdef ASSERT | |
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1618 if (!EnableInvokeDynamic) |
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1619 // @@@ FIXME: Should we correct interpreter_frame_sender_sp in the calling sequences? |
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1620 // Probably, since deoptimization doesn't work yet. |
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1621 assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable"); |
0 | 1622 assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)"); |
1623 #endif | |
1624 | |
1625 interpreter_frame->interpreter_frame_set_method(method); | |
1626 // NOTE the difference in using sender_sp and | |
1627 // interpreter_frame_sender_sp interpreter_frame_sender_sp is | |
1628 // the original sp of the caller (the unextended_sp) and | |
1629 // sender_sp is fp+16 XXX | |
1630 intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; | |
1631 | |
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|
1632 #ifdef ASSERT |
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1633 if (caller->is_interpreted_frame()) { |
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|
1634 assert(locals < caller->fp() + frame::interpreter_frame_initial_sp_offset, "bad placement"); |
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1635 } |
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|
1636 #endif |
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|
1637 |
0 | 1638 interpreter_frame->interpreter_frame_set_locals(locals); |
1639 BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); | |
1640 BasicObjectLock* monbot = montop - moncount; | |
1641 interpreter_frame->interpreter_frame_set_monitor_end(monbot); | |
1642 | |
1643 // Set last_sp | |
1644 intptr_t* esp = (intptr_t*) monbot - | |
1506 | 1645 tempcount*Interpreter::stackElementWords - |
0 | 1646 popframe_extra_args; |
1647 interpreter_frame->interpreter_frame_set_last_sp(esp); | |
1648 | |
1649 // All frames but the initial (oldest) interpreter frame we fill in have | |
1650 // a value for sender_sp that allows walking the stack but isn't | |
1651 // truly correct. Correct the value here. | |
1652 if (extra_locals != 0 && | |
1653 interpreter_frame->sender_sp() == | |
1654 interpreter_frame->interpreter_frame_sender_sp()) { | |
1655 interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + | |
1656 extra_locals); | |
1657 } | |
1658 *interpreter_frame->interpreter_frame_cache_addr() = | |
1659 method->constants()->cache(); | |
1660 } | |
1661 return size; | |
1662 } | |
1663 | |
1664 //----------------------------------------------------------------------------- | |
1665 // Exceptions | |
1666 | |
1667 void TemplateInterpreterGenerator::generate_throw_exception() { | |
1668 // Entry point in previous activation (i.e., if the caller was | |
1669 // interpreted) | |
1670 Interpreter::_rethrow_exception_entry = __ pc(); | |
1671 // Restore sp to interpreter_frame_last_sp even though we are going | |
1672 // to empty the expression stack for the exception processing. | |
304 | 1673 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 1674 // rax: exception |
1675 // rdx: return address/pc that threw exception | |
1676 __ restore_bcp(); // r13 points to call/send | |
1677 __ restore_locals(); | |
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|
1678 __ reinit_heapbase(); // restore r12 as heapbase. |
0 | 1679 // Entry point for exceptions thrown within interpreter code |
1680 Interpreter::_throw_exception_entry = __ pc(); | |
1681 // expression stack is undefined here | |
1682 // rax: exception | |
1683 // r13: exception bcp | |
1684 __ verify_oop(rax); | |
304 | 1685 __ mov(c_rarg1, rax); |
0 | 1686 |
1687 // expression stack must be empty before entering the VM in case of | |
1688 // an exception | |
1689 __ empty_expression_stack(); | |
1690 // find exception handler address and preserve exception oop | |
1691 __ call_VM(rdx, | |
1692 CAST_FROM_FN_PTR(address, | |
1693 InterpreterRuntime::exception_handler_for_exception), | |
1694 c_rarg1); | |
1695 // rax: exception handler entry point | |
1696 // rdx: preserved exception oop | |
1697 // r13: bcp for exception handler | |
1698 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
1699 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
1700 | |
1701 // If the exception is not handled in the current frame the frame is | |
1702 // removed and the exception is rethrown (i.e. exception | |
1703 // continuation is _rethrow_exception). | |
1704 // | |
1705 // Note: At this point the bci is still the bxi for the instruction | |
1706 // which caused the exception and the expression stack is | |
1707 // empty. Thus, for any VM calls at this point, GC will find a legal | |
1708 // oop map (with empty expression stack). | |
1709 | |
1710 // In current activation | |
1711 // tos: exception | |
1712 // esi: exception bcp | |
1713 | |
1714 // | |
1715 // JVMTI PopFrame support | |
1716 // | |
1717 | |
1718 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
1719 __ empty_expression_stack(); | |
1720 // Set the popframe_processing bit in pending_popframe_condition | |
1721 // indicating that we are currently handling popframe, so that | |
1722 // call_VMs that may happen later do not trigger new popframe | |
1723 // handling cycles. | |
1724 __ movl(rdx, Address(r15_thread, JavaThread::popframe_condition_offset())); | |
1725 __ orl(rdx, JavaThread::popframe_processing_bit); | |
1726 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), rdx); | |
1727 | |
1728 { | |
1729 // Check to see whether we are returning to a deoptimized frame. | |
1730 // (The PopFrame call ensures that the caller of the popped frame is | |
1731 // either interpreted or compiled and deoptimizes it if compiled.) | |
1732 // In this case, we can't call dispatch_next() after the frame is | |
1733 // popped, but instead must save the incoming arguments and restore | |
1734 // them after deoptimization has occurred. | |
1735 // | |
1736 // Note that we don't compare the return PC against the | |
1737 // deoptimization blob's unpack entry because of the presence of | |
1738 // adapter frames in C2. | |
1739 Label caller_not_deoptimized; | |
304 | 1740 __ movptr(c_rarg1, Address(rbp, frame::return_addr_offset * wordSize)); |
0 | 1741 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
1742 InterpreterRuntime::interpreter_contains), c_rarg1); | |
1743 __ testl(rax, rax); | |
1744 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
1745 | |
1746 // Compute size of arguments for saving when returning to | |
1747 // deoptimized caller | |
1748 __ get_method(rax); | |
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1749 __ movptr(rax, Address(rax, Method::const_offset())); |
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1750 __ load_unsigned_short(rax, Address(rax, in_bytes(ConstMethod:: |
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 | |
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1827 __ get_vm_result(rax, r15_thread); |
0 | 1828 |
1829 // In between activations - previous activation type unknown yet | |
1830 // compute continuation point - the continuation point expects the | |
1831 // following registers set up: | |
1832 // | |
1833 // rax: exception | |
1834 // rdx: return address/pc that threw exception | |
1835 // rsp: expression stack of caller | |
1836 // rbp: ebp of caller | |
304 | 1837 __ push(rax); // save exception |
1838 __ push(rdx); // save return address | |
0 | 1839 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
1840 SharedRuntime::exception_handler_for_return_address), | |
1295 | 1841 r15_thread, rdx); |
304 | 1842 __ mov(rbx, rax); // save exception handler |
1843 __ pop(rdx); // restore return address | |
1844 __ pop(rax); // restore exception | |
0 | 1845 // Note that an "issuing PC" is actually the next PC after the call |
1846 __ jmp(rbx); // jump to exception | |
1847 // handler of caller | |
1848 } | |
1849 | |
1850 | |
1851 // | |
1852 // JVMTI ForceEarlyReturn support | |
1853 // | |
1854 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
1855 address entry = __ pc(); | |
1856 | |
1857 __ restore_bcp(); | |
1858 __ restore_locals(); | |
1859 __ empty_expression_stack(); | |
1860 __ load_earlyret_value(state); | |
1861 | |
304 | 1862 __ movptr(rdx, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
0 | 1863 Address cond_addr(rdx, JvmtiThreadState::earlyret_state_offset()); |
1864 | |
1865 // Clear the earlyret state | |
1866 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
1867 | |
1868 __ remove_activation(state, rsi, | |
1869 false, /* throw_monitor_exception */ | |
1870 false, /* install_monitor_exception */ | |
1871 true); /* notify_jvmdi */ | |
1872 __ jmp(rsi); | |
1873 | |
1874 return entry; | |
1875 } // end of ForceEarlyReturn support | |
1876 | |
1877 | |
1878 //----------------------------------------------------------------------------- | |
1879 // Helper for vtos entry point generation | |
1880 | |
1881 void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t, | |
1882 address& bep, | |
1883 address& cep, | |
1884 address& sep, | |
1885 address& aep, | |
1886 address& iep, | |
1887 address& lep, | |
1888 address& fep, | |
1889 address& dep, | |
1890 address& vep) { | |
1891 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
1892 Label L; | |
1893 aep = __ pc(); __ push_ptr(); __ jmp(L); | |
1894 fep = __ pc(); __ push_f(); __ jmp(L); | |
1895 dep = __ pc(); __ push_d(); __ jmp(L); | |
1896 lep = __ pc(); __ push_l(); __ jmp(L); | |
1897 bep = cep = sep = | |
1898 iep = __ pc(); __ push_i(); | |
1899 vep = __ pc(); | |
1900 __ bind(L); | |
1901 generate_and_dispatch(t); | |
1902 } | |
1903 | |
1904 | |
1905 //----------------------------------------------------------------------------- | |
1906 // Generation of individual instructions | |
1907 | |
1908 // helpers for generate_and_dispatch | |
1909 | |
1910 | |
1911 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
1912 : TemplateInterpreterGenerator(code) { | |
1913 generate_all(); // down here so it can be "virtual" | |
1914 } | |
1915 | |
1916 //----------------------------------------------------------------------------- | |
1917 | |
1918 // Non-product code | |
1919 #ifndef PRODUCT | |
1920 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
1921 address entry = __ pc(); | |
1922 | |
1923 __ push(state); | |
304 | 1924 __ push(c_rarg0); |
1925 __ push(c_rarg1); | |
1926 __ push(c_rarg2); | |
1927 __ push(c_rarg3); | |
1928 __ mov(c_rarg2, rax); // Pass itos | |
0 | 1929 #ifdef _WIN64 |
1930 __ movflt(xmm3, xmm0); // Pass ftos | |
1931 #endif | |
1932 __ call_VM(noreg, | |
1933 CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), | |
1934 c_rarg1, c_rarg2, c_rarg3); | |
304 | 1935 __ pop(c_rarg3); |
1936 __ pop(c_rarg2); | |
1937 __ pop(c_rarg1); | |
1938 __ pop(c_rarg0); | |
0 | 1939 __ pop(state); |
1940 __ ret(0); // return from result handler | |
1941 | |
1942 return entry; | |
1943 } | |
1944 | |
1945 void TemplateInterpreterGenerator::count_bytecode() { | |
1946 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); | |
1947 } | |
1948 | |
1949 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
1950 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); | |
1951 } | |
1952 | |
1953 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
1954 __ mov32(rbx, ExternalAddress((address) &BytecodePairHistogram::_index)); | |
1955 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
1956 __ orl(rbx, | |
1957 ((int) t->bytecode()) << | |
1958 BytecodePairHistogram::log2_number_of_codes); | |
1959 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
1960 __ lea(rscratch1, ExternalAddress((address) BytecodePairHistogram::_counters)); | |
1961 __ incrementl(Address(rscratch1, rbx, Address::times_4)); | |
1962 } | |
1963 | |
1964 | |
1965 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
1966 // Call a little run-time stub to avoid blow-up for each bytecode. | |
1967 // The run-time runtime saves the right registers, depending on | |
1968 // the tosca in-state for the given template. | |
1969 | |
1970 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
1971 "entry must have been generated"); | |
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1972 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1973 __ andptr(rsp, -16); // align stack as required by ABI |
0 | 1974 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); |
304 | 1975 __ mov(rsp, r12); // restore sp |
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1976 __ reinit_heapbase(); |
0 | 1977 } |
1978 | |
1979 | |
1980 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
1981 Label L; | |
1982 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
1983 StopInterpreterAt); | |
1984 __ jcc(Assembler::notEqual, L); | |
1985 __ int3(); | |
1986 __ bind(L); | |
1987 } | |
1988 #endif // !PRODUCT | |
304 | 1989 #endif // ! CC_INTERP |