Mercurial > hg > graal-jvmci-8
annotate src/cpu/x86/vm/templateInterpreter_x86_64.cpp @ 3336:2e038ad0c1d0
7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
Reviewed-by: kvn, twisti
author | never |
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date | Mon, 02 May 2011 18:53:37 -0700 |
parents | 92add02409c9 |
children | 3d2ab563047a |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "asm/assembler.hpp" | |
27 #include "interpreter/bytecodeHistogram.hpp" | |
28 #include "interpreter/interpreter.hpp" | |
29 #include "interpreter/interpreterGenerator.hpp" | |
30 #include "interpreter/interpreterRuntime.hpp" | |
31 #include "interpreter/templateTable.hpp" | |
32 #include "oops/arrayOop.hpp" | |
33 #include "oops/methodDataOop.hpp" | |
34 #include "oops/methodOop.hpp" | |
35 #include "oops/oop.inline.hpp" | |
36 #include "prims/jvmtiExport.hpp" | |
37 #include "prims/jvmtiThreadState.hpp" | |
38 #include "runtime/arguments.hpp" | |
39 #include "runtime/deoptimization.hpp" | |
40 #include "runtime/frame.inline.hpp" | |
41 #include "runtime/sharedRuntime.hpp" | |
42 #include "runtime/stubRoutines.hpp" | |
43 #include "runtime/synchronizer.hpp" | |
44 #include "runtime/timer.hpp" | |
45 #include "runtime/vframeArray.hpp" | |
46 #include "utilities/debug.hpp" | |
0 | 47 |
48 #define __ _masm-> | |
49 | |
304 | 50 #ifndef CC_INTERP |
51 | |
0 | 52 const int method_offset = frame::interpreter_frame_method_offset * wordSize; |
53 const int bci_offset = frame::interpreter_frame_bcx_offset * wordSize; | |
54 const int locals_offset = frame::interpreter_frame_locals_offset * wordSize; | |
55 | |
56 //----------------------------------------------------------------------------- | |
57 | |
58 address TemplateInterpreterGenerator::generate_StackOverflowError_handler() { | |
59 address entry = __ pc(); | |
60 | |
61 #ifdef ASSERT | |
62 { | |
63 Label L; | |
304 | 64 __ lea(rax, Address(rbp, |
65 frame::interpreter_frame_monitor_block_top_offset * | |
66 wordSize)); | |
67 __ cmpptr(rax, rsp); // rax = maximal rsp for current rbp (stack | |
68 // grows negative) | |
0 | 69 __ jcc(Assembler::aboveEqual, L); // check if frame is complete |
70 __ stop ("interpreter frame not set up"); | |
71 __ bind(L); | |
72 } | |
73 #endif // ASSERT | |
74 // Restore bcp under the assumption that the current frame is still | |
75 // interpreted | |
76 __ restore_bcp(); | |
77 | |
78 // expression stack must be empty before entering the VM if an | |
79 // exception happened | |
80 __ empty_expression_stack(); | |
81 // throw exception | |
82 __ call_VM(noreg, | |
83 CAST_FROM_FN_PTR(address, | |
84 InterpreterRuntime::throw_StackOverflowError)); | |
85 return entry; | |
86 } | |
87 | |
88 address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler( | |
89 const char* name) { | |
90 address entry = __ pc(); | |
91 // expression stack must be empty before entering the VM if an | |
92 // exception happened | |
93 __ empty_expression_stack(); | |
94 // setup parameters | |
95 // ??? convention: expect aberrant index in register ebx | |
96 __ lea(c_rarg1, ExternalAddress((address)name)); | |
97 __ call_VM(noreg, | |
98 CAST_FROM_FN_PTR(address, | |
99 InterpreterRuntime:: | |
100 throw_ArrayIndexOutOfBoundsException), | |
101 c_rarg1, rbx); | |
102 return entry; | |
103 } | |
104 | |
105 address TemplateInterpreterGenerator::generate_ClassCastException_handler() { | |
106 address entry = __ pc(); | |
107 | |
108 // object is at TOS | |
304 | 109 __ pop(c_rarg1); |
0 | 110 |
111 // expression stack must be empty before entering the VM if an | |
112 // exception happened | |
113 __ empty_expression_stack(); | |
114 | |
115 __ call_VM(noreg, | |
116 CAST_FROM_FN_PTR(address, | |
117 InterpreterRuntime:: | |
118 throw_ClassCastException), | |
119 c_rarg1); | |
120 return entry; | |
121 } | |
122 | |
1108 | 123 // Arguments are: required type at TOS+8, failing object (or NULL) at TOS+4. |
710 | 124 address TemplateInterpreterGenerator::generate_WrongMethodType_handler() { |
125 address entry = __ pc(); | |
126 | |
127 __ pop(c_rarg2); // failing object is at TOS | |
128 __ pop(c_rarg1); // required type is at TOS+8 | |
129 | |
1108 | 130 __ verify_oop(c_rarg1); |
131 __ verify_oop(c_rarg2); | |
132 | |
133 // Various method handle types use interpreter registers as temps. | |
134 __ restore_bcp(); | |
135 __ restore_locals(); | |
136 | |
137 // Expression stack must be empty before entering the VM for an exception. | |
710 | 138 __ empty_expression_stack(); |
139 | |
140 __ call_VM(noreg, | |
141 CAST_FROM_FN_PTR(address, | |
1108 | 142 InterpreterRuntime::throw_WrongMethodTypeException), |
710 | 143 // pass required type, failing object (or NULL) |
144 c_rarg1, c_rarg2); | |
145 return entry; | |
146 } | |
147 | |
0 | 148 address TemplateInterpreterGenerator::generate_exception_handler_common( |
149 const char* name, const char* message, bool pass_oop) { | |
150 assert(!pass_oop || message == NULL, "either oop or message but not both"); | |
151 address entry = __ pc(); | |
152 if (pass_oop) { | |
153 // object is at TOS | |
304 | 154 __ pop(c_rarg2); |
0 | 155 } |
156 // expression stack must be empty before entering the VM if an | |
157 // exception happened | |
158 __ empty_expression_stack(); | |
159 // setup parameters | |
160 __ lea(c_rarg1, ExternalAddress((address)name)); | |
161 if (pass_oop) { | |
162 __ call_VM(rax, CAST_FROM_FN_PTR(address, | |
163 InterpreterRuntime:: | |
164 create_klass_exception), | |
165 c_rarg1, c_rarg2); | |
166 } else { | |
167 // kind of lame ExternalAddress can't take NULL because | |
168 // external_word_Relocation will assert. | |
169 if (message != NULL) { | |
170 __ lea(c_rarg2, ExternalAddress((address)message)); | |
171 } else { | |
172 __ movptr(c_rarg2, NULL_WORD); | |
173 } | |
174 __ call_VM(rax, | |
175 CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), | |
176 c_rarg1, c_rarg2); | |
177 } | |
178 // throw exception | |
179 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
180 return entry; | |
181 } | |
182 | |
183 | |
184 address TemplateInterpreterGenerator::generate_continuation_for(TosState state) { | |
185 address entry = __ pc(); | |
186 // NULL last_sp until next java call | |
304 | 187 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 188 __ dispatch_next(state); |
189 return entry; | |
190 } | |
191 | |
192 | |
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193 address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step) { |
0 | 194 address entry = __ pc(); |
195 | |
196 // Restore stack bottom in case i2c adjusted stack | |
304 | 197 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
0 | 198 // and NULL it as marker that esp is now tos until next java call |
304 | 199 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 200 |
201 __ restore_bcp(); | |
202 __ restore_locals(); | |
304 | 203 |
1108 | 204 Label L_got_cache, L_giant_index; |
205 if (EnableInvokeDynamic) { | |
206 __ cmpb(Address(r13, 0), Bytecodes::_invokedynamic); | |
207 __ jcc(Assembler::equal, L_giant_index); | |
208 } | |
1565 | 209 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u2)); |
1108 | 210 __ bind(L_got_cache); |
0 | 211 __ movl(rbx, Address(rbx, rcx, |
1108 | 212 Address::times_ptr, |
0 | 213 in_bytes(constantPoolCacheOopDesc::base_offset()) + |
214 3 * wordSize)); | |
215 __ andl(rbx, 0xFF); | |
304 | 216 __ lea(rsp, Address(rsp, rbx, Address::times_8)); |
0 | 217 __ dispatch_next(state, step); |
1108 | 218 |
219 // out of the main line of code... | |
220 if (EnableInvokeDynamic) { | |
221 __ bind(L_giant_index); | |
1565 | 222 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u4)); |
1108 | 223 __ jmp(L_got_cache); |
224 } | |
225 | |
0 | 226 return entry; |
227 } | |
228 | |
229 | |
230 address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, | |
231 int step) { | |
232 address entry = __ pc(); | |
233 // NULL last_sp until next java call | |
304 | 234 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 235 __ restore_bcp(); |
236 __ restore_locals(); | |
237 // handle exceptions | |
238 { | |
239 Label L; | |
304 | 240 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
0 | 241 __ jcc(Assembler::zero, L); |
242 __ call_VM(noreg, | |
243 CAST_FROM_FN_PTR(address, | |
244 InterpreterRuntime::throw_pending_exception)); | |
245 __ should_not_reach_here(); | |
246 __ bind(L); | |
247 } | |
248 __ dispatch_next(state, step); | |
249 return entry; | |
250 } | |
251 | |
252 int AbstractInterpreter::BasicType_as_index(BasicType type) { | |
253 int i = 0; | |
254 switch (type) { | |
255 case T_BOOLEAN: i = 0; break; | |
256 case T_CHAR : i = 1; break; | |
257 case T_BYTE : i = 2; break; | |
258 case T_SHORT : i = 3; break; | |
259 case T_INT : i = 4; break; | |
260 case T_LONG : i = 5; break; | |
261 case T_VOID : i = 6; break; | |
262 case T_FLOAT : i = 7; break; | |
263 case T_DOUBLE : i = 8; break; | |
264 case T_OBJECT : i = 9; break; | |
265 case T_ARRAY : i = 9; break; | |
266 default : ShouldNotReachHere(); | |
267 } | |
268 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, | |
269 "index out of bounds"); | |
270 return i; | |
271 } | |
272 | |
273 | |
274 address TemplateInterpreterGenerator::generate_result_handler_for( | |
275 BasicType type) { | |
276 address entry = __ pc(); | |
277 switch (type) { | |
278 case T_BOOLEAN: __ c2bool(rax); break; | |
279 case T_CHAR : __ movzwl(rax, rax); break; | |
280 case T_BYTE : __ sign_extend_byte(rax); break; | |
281 case T_SHORT : __ sign_extend_short(rax); break; | |
282 case T_INT : /* nothing to do */ break; | |
283 case T_LONG : /* nothing to do */ break; | |
284 case T_VOID : /* nothing to do */ break; | |
285 case T_FLOAT : /* nothing to do */ break; | |
286 case T_DOUBLE : /* nothing to do */ break; | |
287 case T_OBJECT : | |
288 // retrieve result from frame | |
304 | 289 __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); |
0 | 290 // and verify it |
291 __ verify_oop(rax); | |
292 break; | |
293 default : ShouldNotReachHere(); | |
294 } | |
295 __ ret(0); // return from result handler | |
296 return entry; | |
297 } | |
298 | |
299 address TemplateInterpreterGenerator::generate_safept_entry_for( | |
300 TosState state, | |
301 address runtime_entry) { | |
302 address entry = __ pc(); | |
303 __ push(state); | |
304 __ call_VM(noreg, runtime_entry); | |
305 __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); | |
306 return entry; | |
307 } | |
308 | |
309 | |
310 | |
311 // Helpers for commoning out cases in the various type of method entries. | |
312 // | |
313 | |
314 | |
315 // increment invocation count & check for overflow | |
316 // | |
317 // Note: checking for negative value instead of overflow | |
318 // so we have a 'sticky' overflow test | |
319 // | |
320 // rbx: method | |
321 // ecx: invocation counter | |
322 // | |
323 void InterpreterGenerator::generate_counter_incr( | |
324 Label* overflow, | |
325 Label* profile_method, | |
326 Label* profile_method_continue) { | |
1783 | 327 const Address invocation_counter(rbx, in_bytes(methodOopDesc::invocation_counter_offset()) + |
328 in_bytes(InvocationCounter::counter_offset())); | |
329 // Note: In tiered we increment either counters in methodOop or in MDO depending if we're profiling or not. | |
330 if (TieredCompilation) { | |
331 int increment = InvocationCounter::count_increment; | |
332 int mask = ((1 << Tier0InvokeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
333 Label no_mdo, done; | |
334 if (ProfileInterpreter) { | |
335 // Are we profiling? | |
336 __ movptr(rax, Address(rbx, methodOopDesc::method_data_offset())); | |
337 __ testptr(rax, rax); | |
338 __ jccb(Assembler::zero, no_mdo); | |
339 // Increment counter in the MDO | |
340 const Address mdo_invocation_counter(rax, in_bytes(methodDataOopDesc::invocation_counter_offset()) + | |
341 in_bytes(InvocationCounter::counter_offset())); | |
342 __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rcx, false, Assembler::zero, overflow); | |
343 __ jmpb(done); | |
344 } | |
345 __ bind(no_mdo); | |
346 // Increment counter in methodOop (we don't need to load it, it's in ecx). | |
347 __ increment_mask_and_jump(invocation_counter, increment, mask, rcx, true, Assembler::zero, overflow); | |
348 __ bind(done); | |
349 } else { | |
350 const Address backedge_counter(rbx, | |
351 methodOopDesc::backedge_counter_offset() + | |
0 | 352 InvocationCounter::counter_offset()); |
353 | |
1783 | 354 if (ProfileInterpreter) { // %%% Merge this into methodDataOop |
355 __ incrementl(Address(rbx, | |
356 methodOopDesc::interpreter_invocation_counter_offset())); | |
357 } | |
358 // Update standard invocation counters | |
359 __ movl(rax, backedge_counter); // load backedge counter | |
0 | 360 |
1783 | 361 __ incrementl(rcx, InvocationCounter::count_increment); |
362 __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits | |
0 | 363 |
1783 | 364 __ movl(invocation_counter, rcx); // save invocation count |
365 __ addl(rcx, rax); // add both counters | |
0 | 366 |
1783 | 367 // profile_method is non-null only for interpreted method so |
368 // profile_method != NULL == !native_call | |
369 | |
370 if (ProfileInterpreter && profile_method != NULL) { | |
371 // Test to see if we should create a method data oop | |
372 __ cmp32(rcx, ExternalAddress((address)&InvocationCounter::InterpreterProfileLimit)); | |
373 __ jcc(Assembler::less, *profile_method_continue); | |
0 | 374 |
1783 | 375 // if no method data exists, go to profile_method |
376 __ test_method_data_pointer(rax, *profile_method); | |
377 } | |
378 | |
379 __ cmp32(rcx, ExternalAddress((address)&InvocationCounter::InterpreterInvocationLimit)); | |
380 __ jcc(Assembler::aboveEqual, *overflow); | |
0 | 381 } |
382 } | |
383 | |
384 void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { | |
385 | |
386 // Asm interpreter on entry | |
387 // r14 - locals | |
388 // r13 - bcp | |
389 // rbx - method | |
390 // edx - cpool --- DOES NOT APPEAR TO BE TRUE | |
391 // rbp - interpreter frame | |
392 | |
393 // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] | |
394 // Everything as it was on entry | |
395 // rdx is not restored. Doesn't appear to really be set. | |
396 | |
397 const Address size_of_parameters(rbx, | |
398 methodOopDesc::size_of_parameters_offset()); | |
399 | |
400 // InterpreterRuntime::frequency_counter_overflow takes two | |
401 // arguments, the first (thread) is passed by call_VM, the second | |
402 // indicates if the counter overflow occurs at a backwards branch | |
403 // (NULL bcp). We pass zero for it. The call returns the address | |
404 // of the verified entry point for the method or NULL if the | |
405 // compilation did not complete (either went background or bailed | |
406 // out). | |
407 __ movl(c_rarg1, 0); | |
408 __ call_VM(noreg, | |
409 CAST_FROM_FN_PTR(address, | |
410 InterpreterRuntime::frequency_counter_overflow), | |
411 c_rarg1); | |
412 | |
304 | 413 __ movptr(rbx, Address(rbp, method_offset)); // restore methodOop |
0 | 414 // Preserve invariant that r13/r14 contain bcp/locals of sender frame |
415 // and jump to the interpreted entry. | |
416 __ jmp(*do_continue, relocInfo::none); | |
417 } | |
418 | |
419 // See if we've got enough room on the stack for locals plus overhead. | |
420 // The expression stack grows down incrementally, so the normal guard | |
421 // page mechanism will work for that. | |
422 // | |
423 // NOTE: Since the additional locals are also always pushed (wasn't | |
424 // obvious in generate_method_entry) so the guard should work for them | |
425 // too. | |
426 // | |
427 // Args: | |
428 // rdx: number of additional locals this frame needs (what we must check) | |
429 // rbx: methodOop | |
430 // | |
431 // Kills: | |
432 // rax | |
433 void InterpreterGenerator::generate_stack_overflow_check(void) { | |
434 | |
435 // monitor entry size: see picture of stack set | |
436 // (generate_method_entry) and frame_amd64.hpp | |
437 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
438 | |
439 // total overhead size: entry_size + (saved rbp through expr stack | |
440 // bottom). be sure to change this if you add/subtract anything | |
441 // to/from the overhead area | |
442 const int overhead_size = | |
443 -(frame::interpreter_frame_initial_sp_offset * wordSize) + entry_size; | |
444 | |
445 const int page_size = os::vm_page_size(); | |
446 | |
447 Label after_frame_check; | |
448 | |
449 // see if the frame is greater than one page in size. If so, | |
450 // then we need to verify there is enough stack space remaining | |
451 // for the additional locals. | |
1506 | 452 __ cmpl(rdx, (page_size - overhead_size) / Interpreter::stackElementSize); |
0 | 453 __ jcc(Assembler::belowEqual, after_frame_check); |
454 | |
455 // compute rsp as if this were going to be the last frame on | |
456 // the stack before the red zone | |
457 | |
458 const Address stack_base(r15_thread, Thread::stack_base_offset()); | |
459 const Address stack_size(r15_thread, Thread::stack_size_offset()); | |
460 | |
461 // locals + overhead, in bytes | |
304 | 462 __ mov(rax, rdx); |
1506 | 463 __ shlptr(rax, Interpreter::logStackElementSize); // 2 slots per parameter. |
304 | 464 __ addptr(rax, overhead_size); |
0 | 465 |
466 #ifdef ASSERT | |
467 Label stack_base_okay, stack_size_okay; | |
468 // verify that thread stack base is non-zero | |
304 | 469 __ cmpptr(stack_base, (int32_t)NULL_WORD); |
0 | 470 __ jcc(Assembler::notEqual, stack_base_okay); |
471 __ stop("stack base is zero"); | |
472 __ bind(stack_base_okay); | |
473 // verify that thread stack size is non-zero | |
304 | 474 __ cmpptr(stack_size, 0); |
0 | 475 __ jcc(Assembler::notEqual, stack_size_okay); |
476 __ stop("stack size is zero"); | |
477 __ bind(stack_size_okay); | |
478 #endif | |
479 | |
480 // Add stack base to locals and subtract stack size | |
304 | 481 __ addptr(rax, stack_base); |
482 __ subptr(rax, stack_size); | |
0 | 483 |
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484 // Use the maximum number of pages we might bang. |
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485 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : |
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486 (StackRedPages+StackYellowPages); |
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487 |
0 | 488 // add in the red and yellow zone sizes |
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489 __ addptr(rax, max_pages * page_size); |
0 | 490 |
491 // check against the current stack bottom | |
304 | 492 __ cmpptr(rsp, rax); |
0 | 493 __ jcc(Assembler::above, after_frame_check); |
494 | |
304 | 495 __ pop(rax); // get return address |
0 | 496 __ jump(ExternalAddress(Interpreter::throw_StackOverflowError_entry())); |
497 | |
498 // all done with frame size check | |
499 __ bind(after_frame_check); | |
500 } | |
501 | |
502 // Allocate monitor and lock method (asm interpreter) | |
503 // | |
504 // Args: | |
505 // rbx: methodOop | |
506 // r14: locals | |
507 // | |
508 // Kills: | |
509 // rax | |
510 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, ...(param regs) | |
511 // rscratch1, rscratch2 (scratch regs) | |
512 void InterpreterGenerator::lock_method(void) { | |
513 // synchronize method | |
514 const Address access_flags(rbx, methodOopDesc::access_flags_offset()); | |
515 const Address monitor_block_top( | |
516 rbp, | |
517 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
518 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
519 | |
520 #ifdef ASSERT | |
521 { | |
522 Label L; | |
523 __ movl(rax, access_flags); | |
524 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
525 __ jcc(Assembler::notZero, L); | |
526 __ stop("method doesn't need synchronization"); | |
527 __ bind(L); | |
528 } | |
529 #endif // ASSERT | |
530 | |
531 // get synchronization object | |
532 { | |
533 const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + | |
534 Klass::java_mirror_offset_in_bytes(); | |
535 Label done; | |
536 __ movl(rax, access_flags); | |
537 __ testl(rax, JVM_ACC_STATIC); | |
538 // get receiver (assume this is frequent case) | |
304 | 539 __ movptr(rax, Address(r14, Interpreter::local_offset_in_bytes(0))); |
0 | 540 __ jcc(Assembler::zero, done); |
304 | 541 __ movptr(rax, Address(rbx, methodOopDesc::constants_offset())); |
542 __ movptr(rax, Address(rax, | |
543 constantPoolOopDesc::pool_holder_offset_in_bytes())); | |
544 __ movptr(rax, Address(rax, mirror_offset)); | |
0 | 545 |
546 #ifdef ASSERT | |
547 { | |
548 Label L; | |
304 | 549 __ testptr(rax, rax); |
0 | 550 __ jcc(Assembler::notZero, L); |
551 __ stop("synchronization object is NULL"); | |
552 __ bind(L); | |
553 } | |
554 #endif // ASSERT | |
555 | |
556 __ bind(done); | |
557 } | |
558 | |
559 // add space for monitor & lock | |
304 | 560 __ subptr(rsp, entry_size); // add space for a monitor entry |
561 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
0 | 562 // store object |
304 | 563 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); |
564 __ movptr(c_rarg1, rsp); // object address | |
0 | 565 __ lock_object(c_rarg1); |
566 } | |
567 | |
568 // Generate a fixed interpreter frame. This is identical setup for | |
569 // interpreted methods and for native methods hence the shared code. | |
570 // | |
571 // Args: | |
572 // rax: return address | |
573 // rbx: methodOop | |
574 // r14: pointer to locals | |
575 // r13: sender sp | |
576 // rdx: cp cache | |
577 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
578 // initialize fixed part of activation frame | |
304 | 579 __ push(rax); // save return address |
0 | 580 __ enter(); // save old & set new rbp |
304 | 581 __ push(r13); // set sender sp |
582 __ push((int)NULL_WORD); // leave last_sp as null | |
583 __ movptr(r13, Address(rbx, methodOopDesc::const_offset())); // get constMethodOop | |
584 __ lea(r13, Address(r13, constMethodOopDesc::codes_offset())); // get codebase | |
585 __ push(rbx); // save methodOop | |
0 | 586 if (ProfileInterpreter) { |
587 Label method_data_continue; | |
304 | 588 __ movptr(rdx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
589 __ testptr(rdx, rdx); | |
0 | 590 __ jcc(Assembler::zero, method_data_continue); |
304 | 591 __ addptr(rdx, in_bytes(methodDataOopDesc::data_offset())); |
0 | 592 __ bind(method_data_continue); |
304 | 593 __ push(rdx); // set the mdp (method data pointer) |
0 | 594 } else { |
304 | 595 __ push(0); |
0 | 596 } |
597 | |
304 | 598 __ movptr(rdx, Address(rbx, methodOopDesc::constants_offset())); |
599 __ movptr(rdx, Address(rdx, constantPoolOopDesc::cache_offset_in_bytes())); | |
600 __ push(rdx); // set constant pool cache | |
601 __ push(r14); // set locals pointer | |
0 | 602 if (native_call) { |
304 | 603 __ push(0); // no bcp |
0 | 604 } else { |
304 | 605 __ push(r13); // set bcp |
0 | 606 } |
304 | 607 __ push(0); // reserve word for pointer to expression stack bottom |
608 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
0 | 609 } |
610 | |
611 // End of helpers | |
612 | |
304 | 613 // Various method entries |
614 //------------------------------------------------------------------------------------------------------------------------ | |
615 // | |
616 // | |
617 | |
618 // Call an accessor method (assuming it is resolved, otherwise drop | |
619 // into vanilla (slow path) entry | |
620 address InterpreterGenerator::generate_accessor_entry(void) { | |
621 // rbx: methodOop | |
622 | |
623 // r13: senderSP must preserver for slow path, set SP to it on fast path | |
624 | |
625 address entry_point = __ pc(); | |
626 Label xreturn_path; | |
627 | |
628 // do fastpath for resolved accessor methods | |
629 if (UseFastAccessorMethods) { | |
630 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites | |
631 // thereof; parameter size = 1 | |
632 // Note: We can only use this code if the getfield has been resolved | |
633 // and if we don't have a null-pointer exception => check for | |
634 // these conditions first and use slow path if necessary. | |
635 Label slow_path; | |
636 // If we need a safepoint check, generate full interpreter entry. | |
637 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
638 SafepointSynchronize::_not_synchronized); | |
639 | |
640 __ jcc(Assembler::notEqual, slow_path); | |
641 // rbx: method | |
642 __ movptr(rax, Address(rsp, wordSize)); | |
643 | |
644 // check if local 0 != NULL and read field | |
645 __ testptr(rax, rax); | |
646 __ jcc(Assembler::zero, slow_path); | |
647 | |
648 __ movptr(rdi, Address(rbx, methodOopDesc::constants_offset())); | |
649 // read first instruction word and extract bytecode @ 1 and index @ 2 | |
650 __ movptr(rdx, Address(rbx, methodOopDesc::const_offset())); | |
651 __ movl(rdx, Address(rdx, constMethodOopDesc::codes_offset())); | |
652 // Shift codes right to get the index on the right. | |
653 // The bytecode fetched looks like <index><0xb4><0x2a> | |
654 __ shrl(rdx, 2 * BitsPerByte); | |
655 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
656 __ movptr(rdi, Address(rdi, constantPoolOopDesc::cache_offset_in_bytes())); | |
657 | |
658 // rax: local 0 | |
659 // rbx: method | |
660 // rdx: constant pool cache index | |
661 // rdi: constant pool cache | |
662 | |
663 // check if getfield has been resolved and read constant pool cache entry | |
664 // check the validity of the cache entry by testing whether _indices field | |
665 // contains Bytecode::_getfield in b1 byte. | |
666 assert(in_words(ConstantPoolCacheEntry::size()) == 4, | |
667 "adjust shift below"); | |
668 __ movl(rcx, | |
669 Address(rdi, | |
670 rdx, | |
671 Address::times_8, | |
672 constantPoolCacheOopDesc::base_offset() + | |
673 ConstantPoolCacheEntry::indices_offset())); | |
674 __ shrl(rcx, 2 * BitsPerByte); | |
675 __ andl(rcx, 0xFF); | |
676 __ cmpl(rcx, Bytecodes::_getfield); | |
677 __ jcc(Assembler::notEqual, slow_path); | |
678 | |
679 // Note: constant pool entry is not valid before bytecode is resolved | |
680 __ movptr(rcx, | |
681 Address(rdi, | |
682 rdx, | |
683 Address::times_8, | |
684 constantPoolCacheOopDesc::base_offset() + | |
685 ConstantPoolCacheEntry::f2_offset())); | |
686 // edx: flags | |
687 __ movl(rdx, | |
688 Address(rdi, | |
689 rdx, | |
690 Address::times_8, | |
691 constantPoolCacheOopDesc::base_offset() + | |
692 ConstantPoolCacheEntry::flags_offset())); | |
693 | |
694 Label notObj, notInt, notByte, notShort; | |
695 const Address field_address(rax, rcx, Address::times_1); | |
696 | |
697 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
698 // because they are different sizes. | |
699 // Use the type from the constant pool cache | |
700 __ shrl(rdx, ConstantPoolCacheEntry::tosBits); | |
701 // Make sure we don't need to mask edx for tosBits after the above shift | |
702 ConstantPoolCacheEntry::verify_tosBits(); | |
703 | |
704 __ cmpl(rdx, atos); | |
705 __ jcc(Assembler::notEqual, notObj); | |
706 // atos | |
707 __ load_heap_oop(rax, field_address); | |
708 __ jmp(xreturn_path); | |
709 | |
710 __ bind(notObj); | |
711 __ cmpl(rdx, itos); | |
712 __ jcc(Assembler::notEqual, notInt); | |
713 // itos | |
714 __ movl(rax, field_address); | |
715 __ jmp(xreturn_path); | |
716 | |
717 __ bind(notInt); | |
718 __ cmpl(rdx, btos); | |
719 __ jcc(Assembler::notEqual, notByte); | |
720 // btos | |
721 __ load_signed_byte(rax, field_address); | |
722 __ jmp(xreturn_path); | |
723 | |
724 __ bind(notByte); | |
725 __ cmpl(rdx, stos); | |
726 __ jcc(Assembler::notEqual, notShort); | |
727 // stos | |
622
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728 __ load_signed_short(rax, field_address); |
304 | 729 __ jmp(xreturn_path); |
730 | |
731 __ bind(notShort); | |
732 #ifdef ASSERT | |
733 Label okay; | |
734 __ cmpl(rdx, ctos); | |
735 __ jcc(Assembler::equal, okay); | |
736 __ stop("what type is this?"); | |
737 __ bind(okay); | |
738 #endif | |
739 // ctos | |
622
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740 __ load_unsigned_short(rax, field_address); |
304 | 741 |
742 __ bind(xreturn_path); | |
743 | |
744 // _ireturn/_areturn | |
745 __ pop(rdi); | |
746 __ mov(rsp, r13); | |
747 __ jmp(rdi); | |
748 __ ret(0); | |
749 | |
750 // generate a vanilla interpreter entry as the slow path | |
751 __ bind(slow_path); | |
752 (void) generate_normal_entry(false); | |
753 } else { | |
754 (void) generate_normal_entry(false); | |
755 } | |
756 | |
757 return entry_point; | |
758 } | |
759 | |
3249
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760 // Method entry for java.lang.ref.Reference.get. |
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761 address InterpreterGenerator::generate_Reference_get_entry(void) { |
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762 #ifndef SERIALGC |
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763 // Code: _aload_0, _getfield, _areturn |
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764 // parameter size = 1 |
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765 // |
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766 // The code that gets generated by this routine is split into 2 parts: |
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767 // 1. The "intrinsified" code for G1 (or any SATB based GC), |
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768 // 2. The slow path - which is an expansion of the regular method entry. |
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769 // |
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770 // Notes:- |
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771 // * In the G1 code we do not check whether we need to block for |
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772 // a safepoint. If G1 is enabled then we must execute the specialized |
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773 // code for Reference.get (except when the Reference object is null) |
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774 // so that we can log the value in the referent field with an SATB |
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775 // update buffer. |
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776 // If the code for the getfield template is modified so that the |
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777 // G1 pre-barrier code is executed when the current method is |
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778 // Reference.get() then going through the normal method entry |
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779 // will be fine. |
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780 // * The G1 code can, however, check the receiver object (the instance |
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781 // of java.lang.Reference) and jump to the slow path if null. If the |
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782 // Reference object is null then we obviously cannot fetch the referent |
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783 // and so we don't need to call the G1 pre-barrier. Thus we can use the |
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784 // regular method entry code to generate the NPE. |
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785 // |
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786 // This code is based on generate_accessor_enty. |
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787 // |
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788 // rbx: methodOop |
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789 |
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790 // r13: senderSP must preserve for slow path, set SP to it on fast path |
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791 |
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792 address entry = __ pc(); |
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793 |
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794 const int referent_offset = java_lang_ref_Reference::referent_offset; |
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795 guarantee(referent_offset > 0, "referent offset not initialized"); |
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796 |
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797 if (UseG1GC) { |
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798 Label slow_path; |
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799 // rbx: method |
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800 |
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801 // Check if local 0 != NULL |
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802 // If the receiver is null then it is OK to jump to the slow path. |
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803 __ movptr(rax, Address(rsp, wordSize)); |
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804 |
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805 __ testptr(rax, rax); |
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806 __ jcc(Assembler::zero, slow_path); |
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807 |
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808 // rax: local 0 |
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809 // rbx: method (but can be used as scratch now) |
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810 // rdx: scratch |
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811 // rdi: scratch |
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812 |
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813 // Generate the G1 pre-barrier code to log the value of |
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814 // the referent field in an SATB buffer. |
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815 |
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816 // Load the value of the referent field. |
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817 const Address field_address(rax, referent_offset); |
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818 __ load_heap_oop(rax, field_address); |
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819 |
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820 // Generate the G1 pre-barrier code to log the value of |
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821 // the referent field in an SATB buffer. |
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822 __ g1_write_barrier_pre(noreg /* obj */, |
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823 rax /* pre_val */, |
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824 r15_thread /* thread */, |
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825 rbx /* tmp */, |
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826 true /* tosca_live */, |
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827 true /* expand_call */); |
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828 |
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829 // _areturn |
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830 __ pop(rdi); // get return address |
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831 __ mov(rsp, r13); // set sp to sender sp |
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832 __ jmp(rdi); |
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833 __ ret(0); |
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834 |
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835 // generate a vanilla interpreter entry as the slow path |
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836 __ bind(slow_path); |
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837 (void) generate_normal_entry(false); |
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838 |
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839 return entry; |
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840 } |
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841 #endif // SERIALGC |
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842 |
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843 // If G1 is not enabled then attempt to go through the accessor entry point |
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844 // Reference.get is an accessor |
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845 return generate_accessor_entry(); |
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846 } |
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847 |
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848 |
0 | 849 // Interpreter stub for calling a native method. (asm interpreter) |
850 // This sets up a somewhat different looking stack for calling the | |
851 // native method than the typical interpreter frame setup. | |
852 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
853 // determine code generation flags | |
854 bool inc_counter = UseCompiler || CountCompiledCalls; | |
855 | |
856 // rbx: methodOop | |
857 // r13: sender sp | |
858 | |
859 address entry_point = __ pc(); | |
860 | |
861 const Address size_of_parameters(rbx, methodOopDesc:: | |
862 size_of_parameters_offset()); | |
863 const Address invocation_counter(rbx, methodOopDesc:: | |
864 invocation_counter_offset() + | |
865 InvocationCounter::counter_offset()); | |
866 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
867 | |
868 // get parameter size (always needed) | |
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869 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 870 |
871 // native calls don't need the stack size check since they have no | |
872 // expression stack and the arguments are already on the stack and | |
873 // we only add a handful of words to the stack | |
874 | |
875 // rbx: methodOop | |
876 // rcx: size of parameters | |
877 // r13: sender sp | |
304 | 878 __ pop(rax); // get return address |
0 | 879 |
880 // for natives the size of locals is zero | |
881 | |
882 // compute beginning of parameters (r14) | |
304 | 883 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
0 | 884 |
885 // add 2 zero-initialized slots for native calls | |
886 // initialize result_handler slot | |
304 | 887 __ push((int) NULL_WORD); |
0 | 888 // slot for oop temp |
889 // (static native method holder mirror/jni oop result) | |
304 | 890 __ push((int) NULL_WORD); |
0 | 891 |
892 if (inc_counter) { | |
893 __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
894 } | |
895 | |
896 // initialize fixed part of activation frame | |
897 generate_fixed_frame(true); | |
898 | |
899 // make sure method is native & not abstract | |
900 #ifdef ASSERT | |
901 __ movl(rax, access_flags); | |
902 { | |
903 Label L; | |
904 __ testl(rax, JVM_ACC_NATIVE); | |
905 __ jcc(Assembler::notZero, L); | |
906 __ stop("tried to execute non-native method as native"); | |
907 __ bind(L); | |
908 } | |
909 { | |
910 Label L; | |
911 __ testl(rax, JVM_ACC_ABSTRACT); | |
912 __ jcc(Assembler::zero, L); | |
913 __ stop("tried to execute abstract method in interpreter"); | |
914 __ bind(L); | |
915 } | |
916 #endif | |
917 | |
918 // Since at this point in the method invocation the exception handler | |
919 // would try to exit the monitor of synchronized methods which hasn't | |
920 // been entered yet, we set the thread local variable | |
921 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
922 // check this flag. | |
923 | |
924 const Address do_not_unlock_if_synchronized(r15_thread, | |
925 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
926 __ movbool(do_not_unlock_if_synchronized, true); | |
927 | |
928 // increment invocation count & check for overflow | |
929 Label invocation_counter_overflow; | |
930 if (inc_counter) { | |
931 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
932 } | |
933 | |
934 Label continue_after_compile; | |
935 __ bind(continue_after_compile); | |
936 | |
937 bang_stack_shadow_pages(true); | |
938 | |
939 // reset the _do_not_unlock_if_synchronized flag | |
940 __ movbool(do_not_unlock_if_synchronized, false); | |
941 | |
942 // check for synchronized methods | |
943 // Must happen AFTER invocation_counter check and stack overflow check, | |
944 // so method is not locked if overflows. | |
945 if (synchronized) { | |
946 lock_method(); | |
947 } else { | |
948 // no synchronization necessary | |
949 #ifdef ASSERT | |
950 { | |
951 Label L; | |
952 __ movl(rax, access_flags); | |
953 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
954 __ jcc(Assembler::zero, L); | |
955 __ stop("method needs synchronization"); | |
956 __ bind(L); | |
957 } | |
958 #endif | |
959 } | |
960 | |
961 // start execution | |
962 #ifdef ASSERT | |
963 { | |
964 Label L; | |
965 const Address monitor_block_top(rbp, | |
966 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 967 __ movptr(rax, monitor_block_top); |
968 __ cmpptr(rax, rsp); | |
0 | 969 __ jcc(Assembler::equal, L); |
970 __ stop("broken stack frame setup in interpreter"); | |
971 __ bind(L); | |
972 } | |
973 #endif | |
974 | |
975 // jvmti support | |
976 __ notify_method_entry(); | |
977 | |
978 // work registers | |
979 const Register method = rbx; | |
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980 const Register t = r11; |
0 | 981 |
982 // allocate space for parameters | |
983 __ get_method(method); | |
984 __ verify_oop(method); | |
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985 __ load_unsigned_short(t, |
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986 Address(method, |
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987 methodOopDesc::size_of_parameters_offset())); |
1506 | 988 __ shll(t, Interpreter::logStackElementSize); |
0 | 989 |
304 | 990 __ subptr(rsp, t); |
991 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows | |
605 | 992 __ andptr(rsp, -16); // must be 16 byte boundary (see amd64 ABI) |
0 | 993 |
994 // get signature handler | |
995 { | |
996 Label L; | |
304 | 997 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
998 __ testptr(t, t); | |
0 | 999 __ jcc(Assembler::notZero, L); |
1000 __ call_VM(noreg, | |
1001 CAST_FROM_FN_PTR(address, | |
1002 InterpreterRuntime::prepare_native_call), | |
1003 method); | |
1004 __ get_method(method); | |
304 | 1005 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
0 | 1006 __ bind(L); |
1007 } | |
1008 | |
1009 // call signature handler | |
1010 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == r14, | |
1011 "adjust this code"); | |
1012 assert(InterpreterRuntime::SignatureHandlerGenerator::to() == rsp, | |
1013 "adjust this code"); | |
1014 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == rscratch1, | |
1015 "adjust this code"); | |
1016 | |
1017 // The generated handlers do not touch RBX (the method oop). | |
1018 // However, large signatures cannot be cached and are generated | |
1019 // each time here. The slow-path generator can do a GC on return, | |
1020 // so we must reload it after the call. | |
1021 __ call(t); | |
1022 __ get_method(method); // slow path can do a GC, reload RBX | |
1023 | |
1024 | |
1025 // result handler is in rax | |
1026 // set result handler | |
304 | 1027 __ movptr(Address(rbp, |
1028 (frame::interpreter_frame_result_handler_offset) * wordSize), | |
1029 rax); | |
0 | 1030 |
1031 // pass mirror handle if static call | |
1032 { | |
1033 Label L; | |
1034 const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + | |
1035 Klass::java_mirror_offset_in_bytes(); | |
1036 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); | |
1037 __ testl(t, JVM_ACC_STATIC); | |
1038 __ jcc(Assembler::zero, L); | |
1039 // get mirror | |
304 | 1040 __ movptr(t, Address(method, methodOopDesc::constants_offset())); |
1041 __ movptr(t, Address(t, constantPoolOopDesc::pool_holder_offset_in_bytes())); | |
1042 __ movptr(t, Address(t, mirror_offset)); | |
0 | 1043 // copy mirror into activation frame |
304 | 1044 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), |
0 | 1045 t); |
1046 // pass handle to mirror | |
304 | 1047 __ lea(c_rarg1, |
1048 Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); | |
0 | 1049 __ bind(L); |
1050 } | |
1051 | |
1052 // get native function entry point | |
1053 { | |
1054 Label L; | |
304 | 1055 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
0 | 1056 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
1057 __ movptr(rscratch2, unsatisfied.addr()); | |
304 | 1058 __ cmpptr(rax, rscratch2); |
0 | 1059 __ jcc(Assembler::notEqual, L); |
1060 __ call_VM(noreg, | |
1061 CAST_FROM_FN_PTR(address, | |
1062 InterpreterRuntime::prepare_native_call), | |
1063 method); | |
1064 __ get_method(method); | |
1065 __ verify_oop(method); | |
304 | 1066 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
0 | 1067 __ bind(L); |
1068 } | |
1069 | |
1070 // pass JNIEnv | |
304 | 1071 __ lea(c_rarg0, Address(r15_thread, JavaThread::jni_environment_offset())); |
0 | 1072 |
1073 // It is enough that the pc() points into the right code | |
1074 // segment. It does not have to be the correct return pc. | |
1075 __ set_last_Java_frame(rsp, rbp, (address) __ pc()); | |
1076 | |
1077 // change thread state | |
1078 #ifdef ASSERT | |
1079 { | |
1080 Label L; | |
1081 __ movl(t, Address(r15_thread, JavaThread::thread_state_offset())); | |
1082 __ cmpl(t, _thread_in_Java); | |
1083 __ jcc(Assembler::equal, L); | |
1084 __ stop("Wrong thread state in native stub"); | |
1085 __ bind(L); | |
1086 } | |
1087 #endif | |
1088 | |
1089 // Change state to native | |
1090 | |
1091 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
1092 _thread_in_native); | |
1093 | |
1094 // Call the native method. | |
1095 __ call(rax); | |
1096 // result potentially in rax or xmm0 | |
1097 | |
1098 // Depending on runtime options, either restore the MXCSR | |
1099 // register after returning from the JNI Call or verify that | |
1100 // it wasn't changed during -Xcheck:jni. | |
1101 if (RestoreMXCSROnJNICalls) { | |
304 | 1102 __ ldmxcsr(ExternalAddress(StubRoutines::x86::mxcsr_std())); |
0 | 1103 } |
1104 else if (CheckJNICalls) { | |
304 | 1105 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, StubRoutines::x86::verify_mxcsr_entry()))); |
0 | 1106 } |
1107 | |
1108 // NOTE: The order of these pushes is known to frame::interpreter_frame_result | |
1109 // in order to extract the result of a method call. If the order of these | |
1110 // pushes change or anything else is added to the stack then the code in | |
1111 // interpreter_frame_result must also change. | |
1112 | |
1113 __ push(dtos); | |
1114 __ push(ltos); | |
1115 | |
1116 // change thread state | |
1117 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
1118 _thread_in_native_trans); | |
1119 | |
1120 if (os::is_MP()) { | |
1121 if (UseMembar) { | |
1122 // Force this write out before the read below | |
1123 __ membar(Assembler::Membar_mask_bits( | |
1124 Assembler::LoadLoad | Assembler::LoadStore | | |
1125 Assembler::StoreLoad | Assembler::StoreStore)); | |
1126 } else { | |
1127 // Write serialization page so VM thread can do a pseudo remote membar. | |
1128 // We use the current thread pointer to calculate a thread specific | |
1129 // offset to write to within the page. This minimizes bus traffic | |
1130 // due to cache line collision. | |
1131 __ serialize_memory(r15_thread, rscratch2); | |
1132 } | |
1133 } | |
1134 | |
1135 // check for safepoint operation in progress and/or pending suspend requests | |
1136 { | |
1137 Label Continue; | |
1138 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
1139 SafepointSynchronize::_not_synchronized); | |
1140 | |
1141 Label L; | |
1142 __ jcc(Assembler::notEqual, L); | |
1143 __ cmpl(Address(r15_thread, JavaThread::suspend_flags_offset()), 0); | |
1144 __ jcc(Assembler::equal, Continue); | |
1145 __ bind(L); | |
1146 | |
1147 // Don't use call_VM as it will see a possible pending exception | |
1148 // and forward it and never return here preventing us from | |
1149 // clearing _last_native_pc down below. Also can't use | |
1150 // call_VM_leaf either as it will check to see if r13 & r14 are | |
1151 // preserved and correspond to the bcp/locals pointers. So we do a | |
1152 // runtime call by hand. | |
1153 // | |
304 | 1154 __ mov(c_rarg0, r15_thread); |
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1155 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1156 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
1157 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1158 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans))); |
304 | 1159 __ mov(rsp, r12); // restore sp |
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1160 __ reinit_heapbase(); |
0 | 1161 __ bind(Continue); |
1162 } | |
1163 | |
1164 // change thread state | |
1165 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
1166 | |
1167 // reset_last_Java_frame | |
1168 __ reset_last_Java_frame(true, true); | |
1169 | |
1170 // reset handle block | |
304 | 1171 __ movptr(t, Address(r15_thread, JavaThread::active_handles_offset())); |
1172 __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD); | |
0 | 1173 |
1174 // If result is an oop unbox and store it in frame where gc will see it | |
1175 // and result handler will pick it up | |
1176 | |
1177 { | |
1178 Label no_oop, store_result; | |
1179 __ lea(t, ExternalAddress(AbstractInterpreter::result_handler(T_OBJECT))); | |
304 | 1180 __ cmpptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
0 | 1181 __ jcc(Assembler::notEqual, no_oop); |
1182 // retrieve result | |
1183 __ pop(ltos); | |
304 | 1184 __ testptr(rax, rax); |
0 | 1185 __ jcc(Assembler::zero, store_result); |
304 | 1186 __ movptr(rax, Address(rax, 0)); |
0 | 1187 __ bind(store_result); |
304 | 1188 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize), rax); |
0 | 1189 // keep stack depth as expected by pushing oop which will eventually be discarde |
1190 __ push(ltos); | |
1191 __ bind(no_oop); | |
1192 } | |
1193 | |
1194 | |
1195 { | |
1196 Label no_reguard; | |
1197 __ cmpl(Address(r15_thread, JavaThread::stack_guard_state_offset()), | |
1198 JavaThread::stack_guard_yellow_disabled); | |
1199 __ jcc(Assembler::notEqual, no_reguard); | |
1200 | |
304 | 1201 __ pusha(); // XXX only save smashed registers |
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1202 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1203 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
1204 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1205 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
304 | 1206 __ mov(rsp, r12); // restore sp |
1207 __ popa(); // XXX only restore smashed registers | |
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1208 __ reinit_heapbase(); |
0 | 1209 |
1210 __ bind(no_reguard); | |
1211 } | |
1212 | |
1213 | |
1214 // The method register is junk from after the thread_in_native transition | |
1215 // until here. Also can't call_VM until the bcp has been | |
1216 // restored. Need bcp for throwing exception below so get it now. | |
1217 __ get_method(method); | |
1218 __ verify_oop(method); | |
1219 | |
1220 // restore r13 to have legal interpreter frame, i.e., bci == 0 <=> | |
1221 // r13 == code_base() | |
304 | 1222 __ movptr(r13, Address(method, methodOopDesc::const_offset())); // get constMethodOop |
1223 __ lea(r13, Address(r13, constMethodOopDesc::codes_offset())); // get codebase | |
0 | 1224 // handle exceptions (exception handling will handle unlocking!) |
1225 { | |
1226 Label L; | |
304 | 1227 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
0 | 1228 __ jcc(Assembler::zero, L); |
1229 // Note: At some point we may want to unify this with the code | |
1230 // used in call_VM_base(); i.e., we should use the | |
1231 // StubRoutines::forward_exception code. For now this doesn't work | |
1232 // here because the rsp is not correctly set at this point. | |
1233 __ MacroAssembler::call_VM(noreg, | |
1234 CAST_FROM_FN_PTR(address, | |
1235 InterpreterRuntime::throw_pending_exception)); | |
1236 __ should_not_reach_here(); | |
1237 __ bind(L); | |
1238 } | |
1239 | |
1240 // do unlocking if necessary | |
1241 { | |
1242 Label L; | |
1243 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); | |
1244 __ testl(t, JVM_ACC_SYNCHRONIZED); | |
1245 __ jcc(Assembler::zero, L); | |
1246 // the code below should be shared with interpreter macro | |
1247 // assembler implementation | |
1248 { | |
1249 Label unlock; | |
1250 // BasicObjectLock will be first in list, since this is a | |
1251 // synchronized method. However, need to check that the object | |
1252 // has not been unlocked by an explicit monitorexit bytecode. | |
1253 const Address monitor(rbp, | |
1254 (intptr_t)(frame::interpreter_frame_initial_sp_offset * | |
1255 wordSize - sizeof(BasicObjectLock))); | |
1256 | |
1257 // monitor expect in c_rarg1 for slow unlock path | |
304 | 1258 __ lea(c_rarg1, monitor); // address of first monitor |
0 | 1259 |
304 | 1260 __ movptr(t, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
1261 __ testptr(t, t); | |
0 | 1262 __ jcc(Assembler::notZero, unlock); |
1263 | |
1264 // Entry already unlocked, need to throw exception | |
1265 __ MacroAssembler::call_VM(noreg, | |
1266 CAST_FROM_FN_PTR(address, | |
1267 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
1268 __ should_not_reach_here(); | |
1269 | |
1270 __ bind(unlock); | |
1271 __ unlock_object(c_rarg1); | |
1272 } | |
1273 __ bind(L); | |
1274 } | |
1275 | |
1276 // jvmti support | |
1277 // Note: This must happen _after_ handling/throwing any exceptions since | |
1278 // the exception handler code notifies the runtime of method exits | |
1279 // too. If this happens before, method entry/exit notifications are | |
1280 // not properly paired (was bug - gri 11/22/99). | |
1281 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
1282 | |
1283 // restore potential result in edx:eax, call result handler to | |
1284 // restore potential result in ST0 & handle result | |
1285 | |
1286 __ pop(ltos); | |
1287 __ pop(dtos); | |
1288 | |
304 | 1289 __ movptr(t, Address(rbp, |
1290 (frame::interpreter_frame_result_handler_offset) * wordSize)); | |
0 | 1291 __ call(t); |
1292 | |
1293 // remove activation | |
304 | 1294 __ movptr(t, Address(rbp, |
1295 frame::interpreter_frame_sender_sp_offset * | |
1296 wordSize)); // get sender sp | |
0 | 1297 __ leave(); // remove frame anchor |
304 | 1298 __ pop(rdi); // get return address |
1299 __ mov(rsp, t); // set sp to sender sp | |
0 | 1300 __ jmp(rdi); |
1301 | |
1302 if (inc_counter) { | |
1303 // Handle overflow of counter and compile method | |
1304 __ bind(invocation_counter_overflow); | |
1305 generate_counter_overflow(&continue_after_compile); | |
1306 } | |
1307 | |
1308 return entry_point; | |
1309 } | |
1310 | |
1311 // | |
1312 // Generic interpreted method entry to (asm) interpreter | |
1313 // | |
1314 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
1315 // determine code generation flags | |
1316 bool inc_counter = UseCompiler || CountCompiledCalls; | |
1317 | |
1318 // ebx: methodOop | |
1319 // r13: sender sp | |
1320 address entry_point = __ pc(); | |
1321 | |
1322 const Address size_of_parameters(rbx, | |
1323 methodOopDesc::size_of_parameters_offset()); | |
1324 const Address size_of_locals(rbx, methodOopDesc::size_of_locals_offset()); | |
1325 const Address invocation_counter(rbx, | |
1326 methodOopDesc::invocation_counter_offset() + | |
1327 InvocationCounter::counter_offset()); | |
1328 const Address access_flags(rbx, methodOopDesc::access_flags_offset()); | |
1329 | |
1330 // get parameter size (always needed) | |
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1331 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 1332 |
1333 // rbx: methodOop | |
1334 // rcx: size of parameters | |
1335 // r13: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
1336 | |
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1337 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
0 | 1338 __ subl(rdx, rcx); // rdx = no. of additional locals |
1339 | |
1340 // YYY | |
1341 // __ incrementl(rdx); | |
1342 // __ andl(rdx, -2); | |
1343 | |
1344 // see if we've got enough room on the stack for locals plus overhead. | |
1345 generate_stack_overflow_check(); | |
1346 | |
1347 // get return address | |
304 | 1348 __ pop(rax); |
0 | 1349 |
1350 // compute beginning of parameters (r14) | |
304 | 1351 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
0 | 1352 |
1353 // rdx - # of additional locals | |
1354 // allocate space for locals | |
1355 // explicitly initialize locals | |
1356 { | |
1357 Label exit, loop; | |
1358 __ testl(rdx, rdx); | |
1359 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 | |
1360 __ bind(loop); | |
304 | 1361 __ push((int) NULL_WORD); // initialize local variables |
0 | 1362 __ decrementl(rdx); // until everything initialized |
1363 __ jcc(Assembler::greater, loop); | |
1364 __ bind(exit); | |
1365 } | |
1366 | |
1367 // (pre-)fetch invocation count | |
1368 if (inc_counter) { | |
1369 __ movl(rcx, invocation_counter); | |
1370 } | |
1371 // initialize fixed part of activation frame | |
1372 generate_fixed_frame(false); | |
1373 | |
1374 // make sure method is not native & not abstract | |
1375 #ifdef ASSERT | |
1376 __ movl(rax, access_flags); | |
1377 { | |
1378 Label L; | |
1379 __ testl(rax, JVM_ACC_NATIVE); | |
1380 __ jcc(Assembler::zero, L); | |
1381 __ stop("tried to execute native method as non-native"); | |
1382 __ bind(L); | |
1383 } | |
1384 { | |
1385 Label L; | |
1386 __ testl(rax, JVM_ACC_ABSTRACT); | |
1387 __ jcc(Assembler::zero, L); | |
1388 __ stop("tried to execute abstract method in interpreter"); | |
1389 __ bind(L); | |
1390 } | |
1391 #endif | |
1392 | |
1393 // Since at this point in the method invocation the exception | |
1394 // handler would try to exit the monitor of synchronized methods | |
1395 // which hasn't been entered yet, we set the thread local variable | |
1396 // _do_not_unlock_if_synchronized to true. The remove_activation | |
1397 // will check this flag. | |
1398 | |
1399 const Address do_not_unlock_if_synchronized(r15_thread, | |
1400 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
1401 __ movbool(do_not_unlock_if_synchronized, true); | |
1402 | |
1403 // increment invocation count & check for overflow | |
1404 Label invocation_counter_overflow; | |
1405 Label profile_method; | |
1406 Label profile_method_continue; | |
1407 if (inc_counter) { | |
1408 generate_counter_incr(&invocation_counter_overflow, | |
1409 &profile_method, | |
1410 &profile_method_continue); | |
1411 if (ProfileInterpreter) { | |
1412 __ bind(profile_method_continue); | |
1413 } | |
1414 } | |
1415 | |
1416 Label continue_after_compile; | |
1417 __ bind(continue_after_compile); | |
1418 | |
1419 // check for synchronized interpreted methods | |
1420 bang_stack_shadow_pages(false); | |
1421 | |
1422 // reset the _do_not_unlock_if_synchronized flag | |
1423 __ movbool(do_not_unlock_if_synchronized, false); | |
1424 | |
1425 // check for synchronized methods | |
1426 // Must happen AFTER invocation_counter check and stack overflow check, | |
1427 // so method is not locked if overflows. | |
1428 if (synchronized) { | |
1429 // Allocate monitor and lock method | |
1430 lock_method(); | |
1431 } else { | |
1432 // no synchronization necessary | |
1433 #ifdef ASSERT | |
1434 { | |
1435 Label L; | |
1436 __ movl(rax, access_flags); | |
1437 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
1438 __ jcc(Assembler::zero, L); | |
1439 __ stop("method needs synchronization"); | |
1440 __ bind(L); | |
1441 } | |
1442 #endif | |
1443 } | |
1444 | |
1445 // start execution | |
1446 #ifdef ASSERT | |
1447 { | |
1448 Label L; | |
1449 const Address monitor_block_top (rbp, | |
1450 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 1451 __ movptr(rax, monitor_block_top); |
1452 __ cmpptr(rax, rsp); | |
0 | 1453 __ jcc(Assembler::equal, L); |
1454 __ stop("broken stack frame setup in interpreter"); | |
1455 __ bind(L); | |
1456 } | |
1457 #endif | |
1458 | |
1459 // jvmti support | |
1460 __ notify_method_entry(); | |
1461 | |
1462 __ dispatch_next(vtos); | |
1463 | |
1464 // invocation counter overflow | |
1465 if (inc_counter) { | |
1466 if (ProfileInterpreter) { | |
1467 // We have decided to profile this method in the interpreter | |
1468 __ bind(profile_method); | |
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1469 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
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1470 __ set_method_data_pointer_for_bcp(); |
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1471 __ get_method(rbx); |
0 | 1472 __ jmp(profile_method_continue); |
1473 } | |
1474 // Handle overflow of counter and compile method | |
1475 __ bind(invocation_counter_overflow); | |
1476 generate_counter_overflow(&continue_after_compile); | |
1477 } | |
1478 | |
1479 return entry_point; | |
1480 } | |
1481 | |
1482 // Entry points | |
1483 // | |
1484 // Here we generate the various kind of entries into the interpreter. | |
1485 // The two main entry type are generic bytecode methods and native | |
1486 // call method. These both come in synchronized and non-synchronized | |
1487 // versions but the frame layout they create is very similar. The | |
1488 // other method entry types are really just special purpose entries | |
1489 // that are really entry and interpretation all in one. These are for | |
1490 // trivial methods like accessor, empty, or special math methods. | |
1491 // | |
1492 // When control flow reaches any of the entry types for the interpreter | |
1493 // the following holds -> | |
1494 // | |
1495 // Arguments: | |
1496 // | |
1497 // rbx: methodOop | |
1498 // | |
1499 // Stack layout immediately at entry | |
1500 // | |
1501 // [ return address ] <--- rsp | |
1502 // [ parameter n ] | |
1503 // ... | |
1504 // [ parameter 1 ] | |
1505 // [ expression stack ] (caller's java expression stack) | |
1506 | |
1507 // Assuming that we don't go to one of the trivial specialized entries | |
1508 // the stack will look like below when we are ready to execute the | |
1509 // first bytecode (or call the native routine). The register usage | |
1510 // will be as the template based interpreter expects (see | |
1511 // interpreter_amd64.hpp). | |
1512 // | |
1513 // local variables follow incoming parameters immediately; i.e. | |
1514 // the return address is moved to the end of the locals). | |
1515 // | |
1516 // [ monitor entry ] <--- rsp | |
1517 // ... | |
1518 // [ monitor entry ] | |
1519 // [ expr. stack bottom ] | |
1520 // [ saved r13 ] | |
1521 // [ current r14 ] | |
1522 // [ methodOop ] | |
1523 // [ saved ebp ] <--- rbp | |
1524 // [ return address ] | |
1525 // [ local variable m ] | |
1526 // ... | |
1527 // [ local variable 1 ] | |
1528 // [ parameter n ] | |
1529 // ... | |
1530 // [ parameter 1 ] <--- r14 | |
1531 | |
1532 address AbstractInterpreterGenerator::generate_method_entry( | |
1533 AbstractInterpreter::MethodKind kind) { | |
1534 // determine code generation flags | |
1535 bool synchronized = false; | |
1536 address entry_point = NULL; | |
1537 | |
1538 switch (kind) { | |
1539 case Interpreter::zerolocals : break; | |
1540 case Interpreter::zerolocals_synchronized: synchronized = true; break; | |
1541 case Interpreter::native : entry_point = ((InterpreterGenerator*) this)->generate_native_entry(false); break; | |
1542 case Interpreter::native_synchronized : entry_point = ((InterpreterGenerator*) this)->generate_native_entry(true); break; | |
1543 case Interpreter::empty : entry_point = ((InterpreterGenerator*) this)->generate_empty_entry(); break; | |
1544 case Interpreter::accessor : entry_point = ((InterpreterGenerator*) this)->generate_accessor_entry(); break; | |
1545 case Interpreter::abstract : entry_point = ((InterpreterGenerator*) this)->generate_abstract_entry(); break; | |
710 | 1546 case Interpreter::method_handle : entry_point = ((InterpreterGenerator*) this)->generate_method_handle_entry();break; |
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1547 |
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1548 case Interpreter::java_lang_math_sin : // fall thru |
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1549 case Interpreter::java_lang_math_cos : // fall thru |
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1550 case Interpreter::java_lang_math_tan : // fall thru |
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1551 case Interpreter::java_lang_math_abs : // fall thru |
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1552 case Interpreter::java_lang_math_log : // fall thru |
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1553 case Interpreter::java_lang_math_log10 : // fall thru |
0 | 1554 case Interpreter::java_lang_math_sqrt : entry_point = ((InterpreterGenerator*) this)->generate_math_entry(kind); break; |
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1555 case Interpreter::java_lang_ref_reference_get |
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1556 : entry_point = ((InterpreterGenerator*)this)->generate_Reference_get_entry(); break; |
0 | 1557 default : ShouldNotReachHere(); break; |
1558 } | |
1559 | |
1560 if (entry_point) { | |
1561 return entry_point; | |
1562 } | |
1563 | |
1564 return ((InterpreterGenerator*) this)-> | |
1565 generate_normal_entry(synchronized); | |
1566 } | |
1567 | |
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1568 // These should never be compiled since the interpreter will prefer |
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1569 // the compiled version to the intrinsic version. |
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1570 bool AbstractInterpreter::can_be_compiled(methodHandle m) { |
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1571 switch (method_kind(m)) { |
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1572 case Interpreter::java_lang_math_sin : // fall thru |
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1573 case Interpreter::java_lang_math_cos : // fall thru |
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1574 case Interpreter::java_lang_math_tan : // fall thru |
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1575 case Interpreter::java_lang_math_abs : // fall thru |
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1576 case Interpreter::java_lang_math_log : // fall thru |
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1577 case Interpreter::java_lang_math_log10 : // fall thru |
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1578 case Interpreter::java_lang_math_sqrt : |
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1579 return false; |
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1580 default: |
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1581 return true; |
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1582 } |
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1583 } |
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1584 |
0 | 1585 // How much stack a method activation needs in words. |
1586 int AbstractInterpreter::size_top_interpreter_activation(methodOop method) { | |
1587 const int entry_size = frame::interpreter_frame_monitor_size(); | |
1588 | |
1589 // total overhead size: entry_size + (saved rbp thru expr stack | |
1590 // bottom). be sure to change this if you add/subtract anything | |
1591 // to/from the overhead area | |
1592 const int overhead_size = | |
1593 -(frame::interpreter_frame_initial_sp_offset) + entry_size; | |
1594 | |
1595 const int stub_code = frame::entry_frame_after_call_words; | |
710 | 1596 const int extra_stack = methodOopDesc::extra_stack_entries(); |
1597 const int method_stack = (method->max_locals() + method->max_stack() + extra_stack) * | |
1506 | 1598 Interpreter::stackElementWords; |
0 | 1599 return (overhead_size + method_stack + stub_code); |
1600 } | |
1601 | |
1602 int AbstractInterpreter::layout_activation(methodOop method, | |
1603 int tempcount, | |
1604 int popframe_extra_args, | |
1605 int moncount, | |
1606 int callee_param_count, | |
1607 int callee_locals, | |
1608 frame* caller, | |
1609 frame* interpreter_frame, | |
1610 bool is_top_frame) { | |
1611 // Note: This calculation must exactly parallel the frame setup | |
1612 // in AbstractInterpreterGenerator::generate_method_entry. | |
1613 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
1614 // The frame interpreter_frame, if not NULL, is guaranteed to be the | |
1615 // right size, as determined by a previous call to this method. | |
1616 // It is also guaranteed to be walkable even though it is in a skeletal state | |
1617 | |
1618 // fixed size of an interpreter frame: | |
1506 | 1619 int max_locals = method->max_locals() * Interpreter::stackElementWords; |
0 | 1620 int extra_locals = (method->max_locals() - method->size_of_parameters()) * |
1506 | 1621 Interpreter::stackElementWords; |
0 | 1622 |
1623 int overhead = frame::sender_sp_offset - | |
1624 frame::interpreter_frame_initial_sp_offset; | |
1625 // Our locals were accounted for by the caller (or last_frame_adjust | |
1626 // on the transistion) Since the callee parameters already account | |
1627 // for the callee's params we only need to account for the extra | |
1628 // locals. | |
1629 int size = overhead + | |
1506 | 1630 (callee_locals - callee_param_count)*Interpreter::stackElementWords + |
0 | 1631 moncount * frame::interpreter_frame_monitor_size() + |
1506 | 1632 tempcount* Interpreter::stackElementWords + popframe_extra_args; |
0 | 1633 if (interpreter_frame != NULL) { |
1634 #ifdef ASSERT | |
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1635 if (!EnableInvokeDynamic) |
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1636 // @@@ FIXME: Should we correct interpreter_frame_sender_sp in the calling sequences? |
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1637 // Probably, since deoptimization doesn't work yet. |
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1638 assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable"); |
0 | 1639 assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)"); |
1640 #endif | |
1641 | |
1642 interpreter_frame->interpreter_frame_set_method(method); | |
1643 // NOTE the difference in using sender_sp and | |
1644 // interpreter_frame_sender_sp interpreter_frame_sender_sp is | |
1645 // the original sp of the caller (the unextended_sp) and | |
1646 // sender_sp is fp+16 XXX | |
1647 intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; | |
1648 | |
1649 interpreter_frame->interpreter_frame_set_locals(locals); | |
1650 BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); | |
1651 BasicObjectLock* monbot = montop - moncount; | |
1652 interpreter_frame->interpreter_frame_set_monitor_end(monbot); | |
1653 | |
1654 // Set last_sp | |
1655 intptr_t* esp = (intptr_t*) monbot - | |
1506 | 1656 tempcount*Interpreter::stackElementWords - |
0 | 1657 popframe_extra_args; |
1658 interpreter_frame->interpreter_frame_set_last_sp(esp); | |
1659 | |
1660 // All frames but the initial (oldest) interpreter frame we fill in have | |
1661 // a value for sender_sp that allows walking the stack but isn't | |
1662 // truly correct. Correct the value here. | |
1663 if (extra_locals != 0 && | |
1664 interpreter_frame->sender_sp() == | |
1665 interpreter_frame->interpreter_frame_sender_sp()) { | |
1666 interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + | |
1667 extra_locals); | |
1668 } | |
1669 *interpreter_frame->interpreter_frame_cache_addr() = | |
1670 method->constants()->cache(); | |
1671 } | |
1672 return size; | |
1673 } | |
1674 | |
1675 //----------------------------------------------------------------------------- | |
1676 // Exceptions | |
1677 | |
1678 void TemplateInterpreterGenerator::generate_throw_exception() { | |
1679 // Entry point in previous activation (i.e., if the caller was | |
1680 // interpreted) | |
1681 Interpreter::_rethrow_exception_entry = __ pc(); | |
1682 // Restore sp to interpreter_frame_last_sp even though we are going | |
1683 // to empty the expression stack for the exception processing. | |
304 | 1684 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 1685 // rax: exception |
1686 // rdx: return address/pc that threw exception | |
1687 __ restore_bcp(); // r13 points to call/send | |
1688 __ restore_locals(); | |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
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changeset
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1689 __ reinit_heapbase(); // restore r12 as heapbase. |
0 | 1690 // Entry point for exceptions thrown within interpreter code |
1691 Interpreter::_throw_exception_entry = __ pc(); | |
1692 // expression stack is undefined here | |
1693 // rax: exception | |
1694 // r13: exception bcp | |
1695 __ verify_oop(rax); | |
304 | 1696 __ mov(c_rarg1, rax); |
0 | 1697 |
1698 // expression stack must be empty before entering the VM in case of | |
1699 // an exception | |
1700 __ empty_expression_stack(); | |
1701 // find exception handler address and preserve exception oop | |
1702 __ call_VM(rdx, | |
1703 CAST_FROM_FN_PTR(address, | |
1704 InterpreterRuntime::exception_handler_for_exception), | |
1705 c_rarg1); | |
1706 // rax: exception handler entry point | |
1707 // rdx: preserved exception oop | |
1708 // r13: bcp for exception handler | |
1709 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
1710 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
1711 | |
1712 // If the exception is not handled in the current frame the frame is | |
1713 // removed and the exception is rethrown (i.e. exception | |
1714 // continuation is _rethrow_exception). | |
1715 // | |
1716 // Note: At this point the bci is still the bxi for the instruction | |
1717 // which caused the exception and the expression stack is | |
1718 // empty. Thus, for any VM calls at this point, GC will find a legal | |
1719 // oop map (with empty expression stack). | |
1720 | |
1721 // In current activation | |
1722 // tos: exception | |
1723 // esi: exception bcp | |
1724 | |
1725 // | |
1726 // JVMTI PopFrame support | |
1727 // | |
1728 | |
1729 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
1730 __ empty_expression_stack(); | |
1731 // Set the popframe_processing bit in pending_popframe_condition | |
1732 // indicating that we are currently handling popframe, so that | |
1733 // call_VMs that may happen later do not trigger new popframe | |
1734 // handling cycles. | |
1735 __ movl(rdx, Address(r15_thread, JavaThread::popframe_condition_offset())); | |
1736 __ orl(rdx, JavaThread::popframe_processing_bit); | |
1737 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), rdx); | |
1738 | |
1739 { | |
1740 // Check to see whether we are returning to a deoptimized frame. | |
1741 // (The PopFrame call ensures that the caller of the popped frame is | |
1742 // either interpreted or compiled and deoptimizes it if compiled.) | |
1743 // In this case, we can't call dispatch_next() after the frame is | |
1744 // popped, but instead must save the incoming arguments and restore | |
1745 // them after deoptimization has occurred. | |
1746 // | |
1747 // Note that we don't compare the return PC against the | |
1748 // deoptimization blob's unpack entry because of the presence of | |
1749 // adapter frames in C2. | |
1750 Label caller_not_deoptimized; | |
304 | 1751 __ movptr(c_rarg1, Address(rbp, frame::return_addr_offset * wordSize)); |
0 | 1752 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
1753 InterpreterRuntime::interpreter_contains), c_rarg1); | |
1754 __ testl(rax, rax); | |
1755 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
1756 | |
1757 // Compute size of arguments for saving when returning to | |
1758 // deoptimized caller | |
1759 __ get_method(rax); | |
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6812678: macro assembler needs delayed binding of a few constants (for 6655638)
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605
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1760 __ load_unsigned_short(rax, Address(rax, in_bytes(methodOopDesc:: |
0 | 1761 size_of_parameters_offset()))); |
1506 | 1762 __ shll(rax, Interpreter::logStackElementSize); |
0 | 1763 __ restore_locals(); // XXX do we need this? |
304 | 1764 __ subptr(r14, rax); |
1765 __ addptr(r14, wordSize); | |
0 | 1766 // Save these arguments |
1767 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, | |
1768 Deoptimization:: | |
1769 popframe_preserve_args), | |
1770 r15_thread, rax, r14); | |
1771 | |
1772 __ remove_activation(vtos, rdx, | |
1773 /* throw_monitor_exception */ false, | |
1774 /* install_monitor_exception */ false, | |
1775 /* notify_jvmdi */ false); | |
1776 | |
1777 // Inform deoptimization that it is responsible for restoring | |
1778 // these arguments | |
1779 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
1780 JavaThread::popframe_force_deopt_reexecution_bit); | |
1781 | |
1782 // Continue in deoptimization handler | |
1783 __ jmp(rdx); | |
1784 | |
1785 __ bind(caller_not_deoptimized); | |
1786 } | |
1787 | |
1788 __ remove_activation(vtos, rdx, /* rdx result (retaddr) is not used */ | |
1789 /* throw_monitor_exception */ false, | |
1790 /* install_monitor_exception */ false, | |
1791 /* notify_jvmdi */ false); | |
1792 | |
1793 // Finish with popframe handling | |
1794 // A previous I2C followed by a deoptimization might have moved the | |
1795 // outgoing arguments further up the stack. PopFrame expects the | |
1796 // mutations to those outgoing arguments to be preserved and other | |
1797 // constraints basically require this frame to look exactly as | |
1798 // though it had previously invoked an interpreted activation with | |
1799 // no space between the top of the expression stack (current | |
1800 // last_sp) and the top of stack. Rather than force deopt to | |
1801 // maintain this kind of invariant all the time we call a small | |
1802 // fixup routine to move the mutated arguments onto the top of our | |
1803 // expression stack if necessary. | |
304 | 1804 __ mov(c_rarg1, rsp); |
1805 __ movptr(c_rarg2, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
0 | 1806 // PC must point into interpreter here |
1807 __ set_last_Java_frame(noreg, rbp, __ pc()); | |
1808 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), r15_thread, c_rarg1, c_rarg2); | |
1809 __ reset_last_Java_frame(true, true); | |
1810 // Restore the last_sp and null it out | |
304 | 1811 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
1812 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); | |
0 | 1813 |
1814 __ restore_bcp(); // XXX do we need this? | |
1815 __ restore_locals(); // XXX do we need this? | |
1816 // The method data pointer was incremented already during | |
1817 // call profiling. We have to restore the mdp for the current bcp. | |
1818 if (ProfileInterpreter) { | |
1819 __ set_method_data_pointer_for_bcp(); | |
1820 } | |
1821 | |
1822 // Clear the popframe condition flag | |
1823 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
1824 JavaThread::popframe_inactive); | |
1825 | |
1826 __ dispatch_next(vtos); | |
1827 // end of PopFrame support | |
1828 | |
1829 Interpreter::_remove_activation_entry = __ pc(); | |
1830 | |
1831 // preserve exception over this code sequence | |
1832 __ pop_ptr(rax); | |
304 | 1833 __ movptr(Address(r15_thread, JavaThread::vm_result_offset()), rax); |
0 | 1834 // remove the activation (without doing throws on illegalMonitorExceptions) |
1835 __ remove_activation(vtos, rdx, false, true, false); | |
1836 // restore exception | |
304 | 1837 __ movptr(rax, Address(r15_thread, JavaThread::vm_result_offset())); |
1838 __ movptr(Address(r15_thread, JavaThread::vm_result_offset()), (int32_t)NULL_WORD); | |
0 | 1839 __ verify_oop(rax); |
1840 | |
1841 // In between activations - previous activation type unknown yet | |
1842 // compute continuation point - the continuation point expects the | |
1843 // following registers set up: | |
1844 // | |
1845 // rax: exception | |
1846 // rdx: return address/pc that threw exception | |
1847 // rsp: expression stack of caller | |
1848 // rbp: ebp of caller | |
304 | 1849 __ push(rax); // save exception |
1850 __ push(rdx); // save return address | |
0 | 1851 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
1852 SharedRuntime::exception_handler_for_return_address), | |
1295 | 1853 r15_thread, rdx); |
304 | 1854 __ mov(rbx, rax); // save exception handler |
1855 __ pop(rdx); // restore return address | |
1856 __ pop(rax); // restore exception | |
0 | 1857 // Note that an "issuing PC" is actually the next PC after the call |
1858 __ jmp(rbx); // jump to exception | |
1859 // handler of caller | |
1860 } | |
1861 | |
1862 | |
1863 // | |
1864 // JVMTI ForceEarlyReturn support | |
1865 // | |
1866 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
1867 address entry = __ pc(); | |
1868 | |
1869 __ restore_bcp(); | |
1870 __ restore_locals(); | |
1871 __ empty_expression_stack(); | |
1872 __ load_earlyret_value(state); | |
1873 | |
304 | 1874 __ movptr(rdx, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
0 | 1875 Address cond_addr(rdx, JvmtiThreadState::earlyret_state_offset()); |
1876 | |
1877 // Clear the earlyret state | |
1878 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
1879 | |
1880 __ remove_activation(state, rsi, | |
1881 false, /* throw_monitor_exception */ | |
1882 false, /* install_monitor_exception */ | |
1883 true); /* notify_jvmdi */ | |
1884 __ jmp(rsi); | |
1885 | |
1886 return entry; | |
1887 } // end of ForceEarlyReturn support | |
1888 | |
1889 | |
1890 //----------------------------------------------------------------------------- | |
1891 // Helper for vtos entry point generation | |
1892 | |
1893 void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t, | |
1894 address& bep, | |
1895 address& cep, | |
1896 address& sep, | |
1897 address& aep, | |
1898 address& iep, | |
1899 address& lep, | |
1900 address& fep, | |
1901 address& dep, | |
1902 address& vep) { | |
1903 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
1904 Label L; | |
1905 aep = __ pc(); __ push_ptr(); __ jmp(L); | |
1906 fep = __ pc(); __ push_f(); __ jmp(L); | |
1907 dep = __ pc(); __ push_d(); __ jmp(L); | |
1908 lep = __ pc(); __ push_l(); __ jmp(L); | |
1909 bep = cep = sep = | |
1910 iep = __ pc(); __ push_i(); | |
1911 vep = __ pc(); | |
1912 __ bind(L); | |
1913 generate_and_dispatch(t); | |
1914 } | |
1915 | |
1916 | |
1917 //----------------------------------------------------------------------------- | |
1918 // Generation of individual instructions | |
1919 | |
1920 // helpers for generate_and_dispatch | |
1921 | |
1922 | |
1923 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
1924 : TemplateInterpreterGenerator(code) { | |
1925 generate_all(); // down here so it can be "virtual" | |
1926 } | |
1927 | |
1928 //----------------------------------------------------------------------------- | |
1929 | |
1930 // Non-product code | |
1931 #ifndef PRODUCT | |
1932 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
1933 address entry = __ pc(); | |
1934 | |
1935 __ push(state); | |
304 | 1936 __ push(c_rarg0); |
1937 __ push(c_rarg1); | |
1938 __ push(c_rarg2); | |
1939 __ push(c_rarg3); | |
1940 __ mov(c_rarg2, rax); // Pass itos | |
0 | 1941 #ifdef _WIN64 |
1942 __ movflt(xmm3, xmm0); // Pass ftos | |
1943 #endif | |
1944 __ call_VM(noreg, | |
1945 CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), | |
1946 c_rarg1, c_rarg2, c_rarg3); | |
304 | 1947 __ pop(c_rarg3); |
1948 __ pop(c_rarg2); | |
1949 __ pop(c_rarg1); | |
1950 __ pop(c_rarg0); | |
0 | 1951 __ pop(state); |
1952 __ ret(0); // return from result handler | |
1953 | |
1954 return entry; | |
1955 } | |
1956 | |
1957 void TemplateInterpreterGenerator::count_bytecode() { | |
1958 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); | |
1959 } | |
1960 | |
1961 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
1962 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); | |
1963 } | |
1964 | |
1965 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
1966 __ mov32(rbx, ExternalAddress((address) &BytecodePairHistogram::_index)); | |
1967 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
1968 __ orl(rbx, | |
1969 ((int) t->bytecode()) << | |
1970 BytecodePairHistogram::log2_number_of_codes); | |
1971 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
1972 __ lea(rscratch1, ExternalAddress((address) BytecodePairHistogram::_counters)); | |
1973 __ incrementl(Address(rscratch1, rbx, Address::times_4)); | |
1974 } | |
1975 | |
1976 | |
1977 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
1978 // Call a little run-time stub to avoid blow-up for each bytecode. | |
1979 // The run-time runtime saves the right registers, depending on | |
1980 // the tosca in-state for the given template. | |
1981 | |
1982 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
1983 "entry must have been generated"); | |
1976
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6780143: hs203t003 hits SIGSEGV/EXCEPTION_ACCESS_VIOLATION with -XX:+UseCompressedOops
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1984 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1985 __ andptr(rsp, -16); // align stack as required by ABI |
0 | 1986 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); |
304 | 1987 __ mov(rsp, r12); // restore sp |
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ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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1988 __ reinit_heapbase(); |
0 | 1989 } |
1990 | |
1991 | |
1992 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
1993 Label L; | |
1994 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
1995 StopInterpreterAt); | |
1996 __ jcc(Assembler::notEqual, L); | |
1997 __ int3(); | |
1998 __ bind(L); | |
1999 } | |
2000 #endif // !PRODUCT | |
304 | 2001 #endif // ! CC_INTERP |