Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateInterpreter_x86_64.cpp @ 2262:6bbaedb03534
7016474: string compare intrinsic improvements
Reviewed-by: kvn
author | never |
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date | Wed, 09 Feb 2011 15:02:23 -0800 |
parents | 638119ce7cfd |
children | 38fea01eb669 e1162778c1c8 |
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 | |
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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 | |
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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 | |
0 | 760 // Interpreter stub for calling a native method. (asm interpreter) |
761 // This sets up a somewhat different looking stack for calling the | |
762 // native method than the typical interpreter frame setup. | |
763 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
764 // determine code generation flags | |
765 bool inc_counter = UseCompiler || CountCompiledCalls; | |
766 | |
767 // rbx: methodOop | |
768 // r13: sender sp | |
769 | |
770 address entry_point = __ pc(); | |
771 | |
772 const Address size_of_parameters(rbx, methodOopDesc:: | |
773 size_of_parameters_offset()); | |
774 const Address invocation_counter(rbx, methodOopDesc:: | |
775 invocation_counter_offset() + | |
776 InvocationCounter::counter_offset()); | |
777 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
778 | |
779 // get parameter size (always needed) | |
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780 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 781 |
782 // native calls don't need the stack size check since they have no | |
783 // expression stack and the arguments are already on the stack and | |
784 // we only add a handful of words to the stack | |
785 | |
786 // rbx: methodOop | |
787 // rcx: size of parameters | |
788 // r13: sender sp | |
304 | 789 __ pop(rax); // get return address |
0 | 790 |
791 // for natives the size of locals is zero | |
792 | |
793 // compute beginning of parameters (r14) | |
304 | 794 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
0 | 795 |
796 // add 2 zero-initialized slots for native calls | |
797 // initialize result_handler slot | |
304 | 798 __ push((int) NULL_WORD); |
0 | 799 // slot for oop temp |
800 // (static native method holder mirror/jni oop result) | |
304 | 801 __ push((int) NULL_WORD); |
0 | 802 |
803 if (inc_counter) { | |
804 __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
805 } | |
806 | |
807 // initialize fixed part of activation frame | |
808 generate_fixed_frame(true); | |
809 | |
810 // make sure method is native & not abstract | |
811 #ifdef ASSERT | |
812 __ movl(rax, access_flags); | |
813 { | |
814 Label L; | |
815 __ testl(rax, JVM_ACC_NATIVE); | |
816 __ jcc(Assembler::notZero, L); | |
817 __ stop("tried to execute non-native method as native"); | |
818 __ bind(L); | |
819 } | |
820 { | |
821 Label L; | |
822 __ testl(rax, JVM_ACC_ABSTRACT); | |
823 __ jcc(Assembler::zero, L); | |
824 __ stop("tried to execute abstract method in interpreter"); | |
825 __ bind(L); | |
826 } | |
827 #endif | |
828 | |
829 // Since at this point in the method invocation the exception handler | |
830 // would try to exit the monitor of synchronized methods which hasn't | |
831 // been entered yet, we set the thread local variable | |
832 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
833 // check this flag. | |
834 | |
835 const Address do_not_unlock_if_synchronized(r15_thread, | |
836 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
837 __ movbool(do_not_unlock_if_synchronized, true); | |
838 | |
839 // increment invocation count & check for overflow | |
840 Label invocation_counter_overflow; | |
841 if (inc_counter) { | |
842 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
843 } | |
844 | |
845 Label continue_after_compile; | |
846 __ bind(continue_after_compile); | |
847 | |
848 bang_stack_shadow_pages(true); | |
849 | |
850 // reset the _do_not_unlock_if_synchronized flag | |
851 __ movbool(do_not_unlock_if_synchronized, false); | |
852 | |
853 // check for synchronized methods | |
854 // Must happen AFTER invocation_counter check and stack overflow check, | |
855 // so method is not locked if overflows. | |
856 if (synchronized) { | |
857 lock_method(); | |
858 } else { | |
859 // no synchronization necessary | |
860 #ifdef ASSERT | |
861 { | |
862 Label L; | |
863 __ movl(rax, access_flags); | |
864 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
865 __ jcc(Assembler::zero, L); | |
866 __ stop("method needs synchronization"); | |
867 __ bind(L); | |
868 } | |
869 #endif | |
870 } | |
871 | |
872 // start execution | |
873 #ifdef ASSERT | |
874 { | |
875 Label L; | |
876 const Address monitor_block_top(rbp, | |
877 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 878 __ movptr(rax, monitor_block_top); |
879 __ cmpptr(rax, rsp); | |
0 | 880 __ jcc(Assembler::equal, L); |
881 __ stop("broken stack frame setup in interpreter"); | |
882 __ bind(L); | |
883 } | |
884 #endif | |
885 | |
886 // jvmti support | |
887 __ notify_method_entry(); | |
888 | |
889 // work registers | |
890 const Register method = rbx; | |
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891 const Register t = r11; |
0 | 892 |
893 // allocate space for parameters | |
894 __ get_method(method); | |
895 __ verify_oop(method); | |
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896 __ load_unsigned_short(t, |
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897 Address(method, |
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898 methodOopDesc::size_of_parameters_offset())); |
1506 | 899 __ shll(t, Interpreter::logStackElementSize); |
0 | 900 |
304 | 901 __ subptr(rsp, t); |
902 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows | |
605 | 903 __ andptr(rsp, -16); // must be 16 byte boundary (see amd64 ABI) |
0 | 904 |
905 // get signature handler | |
906 { | |
907 Label L; | |
304 | 908 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
909 __ testptr(t, t); | |
0 | 910 __ jcc(Assembler::notZero, L); |
911 __ call_VM(noreg, | |
912 CAST_FROM_FN_PTR(address, | |
913 InterpreterRuntime::prepare_native_call), | |
914 method); | |
915 __ get_method(method); | |
304 | 916 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
0 | 917 __ bind(L); |
918 } | |
919 | |
920 // call signature handler | |
921 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == r14, | |
922 "adjust this code"); | |
923 assert(InterpreterRuntime::SignatureHandlerGenerator::to() == rsp, | |
924 "adjust this code"); | |
925 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == rscratch1, | |
926 "adjust this code"); | |
927 | |
928 // The generated handlers do not touch RBX (the method oop). | |
929 // However, large signatures cannot be cached and are generated | |
930 // each time here. The slow-path generator can do a GC on return, | |
931 // so we must reload it after the call. | |
932 __ call(t); | |
933 __ get_method(method); // slow path can do a GC, reload RBX | |
934 | |
935 | |
936 // result handler is in rax | |
937 // set result handler | |
304 | 938 __ movptr(Address(rbp, |
939 (frame::interpreter_frame_result_handler_offset) * wordSize), | |
940 rax); | |
0 | 941 |
942 // pass mirror handle if static call | |
943 { | |
944 Label L; | |
945 const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + | |
946 Klass::java_mirror_offset_in_bytes(); | |
947 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); | |
948 __ testl(t, JVM_ACC_STATIC); | |
949 __ jcc(Assembler::zero, L); | |
950 // get mirror | |
304 | 951 __ movptr(t, Address(method, methodOopDesc::constants_offset())); |
952 __ movptr(t, Address(t, constantPoolOopDesc::pool_holder_offset_in_bytes())); | |
953 __ movptr(t, Address(t, mirror_offset)); | |
0 | 954 // copy mirror into activation frame |
304 | 955 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), |
0 | 956 t); |
957 // pass handle to mirror | |
304 | 958 __ lea(c_rarg1, |
959 Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); | |
0 | 960 __ bind(L); |
961 } | |
962 | |
963 // get native function entry point | |
964 { | |
965 Label L; | |
304 | 966 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
0 | 967 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
968 __ movptr(rscratch2, unsatisfied.addr()); | |
304 | 969 __ cmpptr(rax, rscratch2); |
0 | 970 __ jcc(Assembler::notEqual, L); |
971 __ call_VM(noreg, | |
972 CAST_FROM_FN_PTR(address, | |
973 InterpreterRuntime::prepare_native_call), | |
974 method); | |
975 __ get_method(method); | |
976 __ verify_oop(method); | |
304 | 977 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
0 | 978 __ bind(L); |
979 } | |
980 | |
981 // pass JNIEnv | |
304 | 982 __ lea(c_rarg0, Address(r15_thread, JavaThread::jni_environment_offset())); |
0 | 983 |
984 // It is enough that the pc() points into the right code | |
985 // segment. It does not have to be the correct return pc. | |
986 __ set_last_Java_frame(rsp, rbp, (address) __ pc()); | |
987 | |
988 // change thread state | |
989 #ifdef ASSERT | |
990 { | |
991 Label L; | |
992 __ movl(t, Address(r15_thread, JavaThread::thread_state_offset())); | |
993 __ cmpl(t, _thread_in_Java); | |
994 __ jcc(Assembler::equal, L); | |
995 __ stop("Wrong thread state in native stub"); | |
996 __ bind(L); | |
997 } | |
998 #endif | |
999 | |
1000 // Change state to native | |
1001 | |
1002 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
1003 _thread_in_native); | |
1004 | |
1005 // Call the native method. | |
1006 __ call(rax); | |
1007 // result potentially in rax or xmm0 | |
1008 | |
1009 // Depending on runtime options, either restore the MXCSR | |
1010 // register after returning from the JNI Call or verify that | |
1011 // it wasn't changed during -Xcheck:jni. | |
1012 if (RestoreMXCSROnJNICalls) { | |
304 | 1013 __ ldmxcsr(ExternalAddress(StubRoutines::x86::mxcsr_std())); |
0 | 1014 } |
1015 else if (CheckJNICalls) { | |
304 | 1016 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, StubRoutines::x86::verify_mxcsr_entry()))); |
0 | 1017 } |
1018 | |
1019 // NOTE: The order of these pushes is known to frame::interpreter_frame_result | |
1020 // in order to extract the result of a method call. If the order of these | |
1021 // pushes change or anything else is added to the stack then the code in | |
1022 // interpreter_frame_result must also change. | |
1023 | |
1024 __ push(dtos); | |
1025 __ push(ltos); | |
1026 | |
1027 // change thread state | |
1028 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
1029 _thread_in_native_trans); | |
1030 | |
1031 if (os::is_MP()) { | |
1032 if (UseMembar) { | |
1033 // Force this write out before the read below | |
1034 __ membar(Assembler::Membar_mask_bits( | |
1035 Assembler::LoadLoad | Assembler::LoadStore | | |
1036 Assembler::StoreLoad | Assembler::StoreStore)); | |
1037 } else { | |
1038 // Write serialization page so VM thread can do a pseudo remote membar. | |
1039 // We use the current thread pointer to calculate a thread specific | |
1040 // offset to write to within the page. This minimizes bus traffic | |
1041 // due to cache line collision. | |
1042 __ serialize_memory(r15_thread, rscratch2); | |
1043 } | |
1044 } | |
1045 | |
1046 // check for safepoint operation in progress and/or pending suspend requests | |
1047 { | |
1048 Label Continue; | |
1049 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
1050 SafepointSynchronize::_not_synchronized); | |
1051 | |
1052 Label L; | |
1053 __ jcc(Assembler::notEqual, L); | |
1054 __ cmpl(Address(r15_thread, JavaThread::suspend_flags_offset()), 0); | |
1055 __ jcc(Assembler::equal, Continue); | |
1056 __ bind(L); | |
1057 | |
1058 // Don't use call_VM as it will see a possible pending exception | |
1059 // and forward it and never return here preventing us from | |
1060 // clearing _last_native_pc down below. Also can't use | |
1061 // call_VM_leaf either as it will check to see if r13 & r14 are | |
1062 // preserved and correspond to the bcp/locals pointers. So we do a | |
1063 // runtime call by hand. | |
1064 // | |
304 | 1065 __ mov(c_rarg0, r15_thread); |
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1066 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1067 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
1068 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1069 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans))); |
304 | 1070 __ mov(rsp, r12); // restore sp |
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1071 __ reinit_heapbase(); |
0 | 1072 __ bind(Continue); |
1073 } | |
1074 | |
1075 // change thread state | |
1076 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
1077 | |
1078 // reset_last_Java_frame | |
1079 __ reset_last_Java_frame(true, true); | |
1080 | |
1081 // reset handle block | |
304 | 1082 __ movptr(t, Address(r15_thread, JavaThread::active_handles_offset())); |
1083 __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD); | |
0 | 1084 |
1085 // If result is an oop unbox and store it in frame where gc will see it | |
1086 // and result handler will pick it up | |
1087 | |
1088 { | |
1089 Label no_oop, store_result; | |
1090 __ lea(t, ExternalAddress(AbstractInterpreter::result_handler(T_OBJECT))); | |
304 | 1091 __ cmpptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
0 | 1092 __ jcc(Assembler::notEqual, no_oop); |
1093 // retrieve result | |
1094 __ pop(ltos); | |
304 | 1095 __ testptr(rax, rax); |
0 | 1096 __ jcc(Assembler::zero, store_result); |
304 | 1097 __ movptr(rax, Address(rax, 0)); |
0 | 1098 __ bind(store_result); |
304 | 1099 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize), rax); |
0 | 1100 // keep stack depth as expected by pushing oop which will eventually be discarde |
1101 __ push(ltos); | |
1102 __ bind(no_oop); | |
1103 } | |
1104 | |
1105 | |
1106 { | |
1107 Label no_reguard; | |
1108 __ cmpl(Address(r15_thread, JavaThread::stack_guard_state_offset()), | |
1109 JavaThread::stack_guard_yellow_disabled); | |
1110 __ jcc(Assembler::notEqual, no_reguard); | |
1111 | |
304 | 1112 __ pusha(); // XXX only save smashed registers |
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1113 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1114 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
1115 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1116 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
304 | 1117 __ mov(rsp, r12); // restore sp |
1118 __ popa(); // XXX only restore smashed registers | |
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1119 __ reinit_heapbase(); |
0 | 1120 |
1121 __ bind(no_reguard); | |
1122 } | |
1123 | |
1124 | |
1125 // The method register is junk from after the thread_in_native transition | |
1126 // until here. Also can't call_VM until the bcp has been | |
1127 // restored. Need bcp for throwing exception below so get it now. | |
1128 __ get_method(method); | |
1129 __ verify_oop(method); | |
1130 | |
1131 // restore r13 to have legal interpreter frame, i.e., bci == 0 <=> | |
1132 // r13 == code_base() | |
304 | 1133 __ movptr(r13, Address(method, methodOopDesc::const_offset())); // get constMethodOop |
1134 __ lea(r13, Address(r13, constMethodOopDesc::codes_offset())); // get codebase | |
0 | 1135 // handle exceptions (exception handling will handle unlocking!) |
1136 { | |
1137 Label L; | |
304 | 1138 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
0 | 1139 __ jcc(Assembler::zero, L); |
1140 // Note: At some point we may want to unify this with the code | |
1141 // used in call_VM_base(); i.e., we should use the | |
1142 // StubRoutines::forward_exception code. For now this doesn't work | |
1143 // here because the rsp is not correctly set at this point. | |
1144 __ MacroAssembler::call_VM(noreg, | |
1145 CAST_FROM_FN_PTR(address, | |
1146 InterpreterRuntime::throw_pending_exception)); | |
1147 __ should_not_reach_here(); | |
1148 __ bind(L); | |
1149 } | |
1150 | |
1151 // do unlocking if necessary | |
1152 { | |
1153 Label L; | |
1154 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); | |
1155 __ testl(t, JVM_ACC_SYNCHRONIZED); | |
1156 __ jcc(Assembler::zero, L); | |
1157 // the code below should be shared with interpreter macro | |
1158 // assembler implementation | |
1159 { | |
1160 Label unlock; | |
1161 // BasicObjectLock will be first in list, since this is a | |
1162 // synchronized method. However, need to check that the object | |
1163 // has not been unlocked by an explicit monitorexit bytecode. | |
1164 const Address monitor(rbp, | |
1165 (intptr_t)(frame::interpreter_frame_initial_sp_offset * | |
1166 wordSize - sizeof(BasicObjectLock))); | |
1167 | |
1168 // monitor expect in c_rarg1 for slow unlock path | |
304 | 1169 __ lea(c_rarg1, monitor); // address of first monitor |
0 | 1170 |
304 | 1171 __ movptr(t, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
1172 __ testptr(t, t); | |
0 | 1173 __ jcc(Assembler::notZero, unlock); |
1174 | |
1175 // Entry already unlocked, need to throw exception | |
1176 __ MacroAssembler::call_VM(noreg, | |
1177 CAST_FROM_FN_PTR(address, | |
1178 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
1179 __ should_not_reach_here(); | |
1180 | |
1181 __ bind(unlock); | |
1182 __ unlock_object(c_rarg1); | |
1183 } | |
1184 __ bind(L); | |
1185 } | |
1186 | |
1187 // jvmti support | |
1188 // Note: This must happen _after_ handling/throwing any exceptions since | |
1189 // the exception handler code notifies the runtime of method exits | |
1190 // too. If this happens before, method entry/exit notifications are | |
1191 // not properly paired (was bug - gri 11/22/99). | |
1192 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
1193 | |
1194 // restore potential result in edx:eax, call result handler to | |
1195 // restore potential result in ST0 & handle result | |
1196 | |
1197 __ pop(ltos); | |
1198 __ pop(dtos); | |
1199 | |
304 | 1200 __ movptr(t, Address(rbp, |
1201 (frame::interpreter_frame_result_handler_offset) * wordSize)); | |
0 | 1202 __ call(t); |
1203 | |
1204 // remove activation | |
304 | 1205 __ movptr(t, Address(rbp, |
1206 frame::interpreter_frame_sender_sp_offset * | |
1207 wordSize)); // get sender sp | |
0 | 1208 __ leave(); // remove frame anchor |
304 | 1209 __ pop(rdi); // get return address |
1210 __ mov(rsp, t); // set sp to sender sp | |
0 | 1211 __ jmp(rdi); |
1212 | |
1213 if (inc_counter) { | |
1214 // Handle overflow of counter and compile method | |
1215 __ bind(invocation_counter_overflow); | |
1216 generate_counter_overflow(&continue_after_compile); | |
1217 } | |
1218 | |
1219 return entry_point; | |
1220 } | |
1221 | |
1222 // | |
1223 // Generic interpreted method entry to (asm) interpreter | |
1224 // | |
1225 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
1226 // determine code generation flags | |
1227 bool inc_counter = UseCompiler || CountCompiledCalls; | |
1228 | |
1229 // ebx: methodOop | |
1230 // r13: sender sp | |
1231 address entry_point = __ pc(); | |
1232 | |
1233 const Address size_of_parameters(rbx, | |
1234 methodOopDesc::size_of_parameters_offset()); | |
1235 const Address size_of_locals(rbx, methodOopDesc::size_of_locals_offset()); | |
1236 const Address invocation_counter(rbx, | |
1237 methodOopDesc::invocation_counter_offset() + | |
1238 InvocationCounter::counter_offset()); | |
1239 const Address access_flags(rbx, methodOopDesc::access_flags_offset()); | |
1240 | |
1241 // get parameter size (always needed) | |
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1242 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 1243 |
1244 // rbx: methodOop | |
1245 // rcx: size of parameters | |
1246 // r13: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
1247 | |
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1248 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
0 | 1249 __ subl(rdx, rcx); // rdx = no. of additional locals |
1250 | |
1251 // YYY | |
1252 // __ incrementl(rdx); | |
1253 // __ andl(rdx, -2); | |
1254 | |
1255 // see if we've got enough room on the stack for locals plus overhead. | |
1256 generate_stack_overflow_check(); | |
1257 | |
1258 // get return address | |
304 | 1259 __ pop(rax); |
0 | 1260 |
1261 // compute beginning of parameters (r14) | |
304 | 1262 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
0 | 1263 |
1264 // rdx - # of additional locals | |
1265 // allocate space for locals | |
1266 // explicitly initialize locals | |
1267 { | |
1268 Label exit, loop; | |
1269 __ testl(rdx, rdx); | |
1270 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 | |
1271 __ bind(loop); | |
304 | 1272 __ push((int) NULL_WORD); // initialize local variables |
0 | 1273 __ decrementl(rdx); // until everything initialized |
1274 __ jcc(Assembler::greater, loop); | |
1275 __ bind(exit); | |
1276 } | |
1277 | |
1278 // (pre-)fetch invocation count | |
1279 if (inc_counter) { | |
1280 __ movl(rcx, invocation_counter); | |
1281 } | |
1282 // initialize fixed part of activation frame | |
1283 generate_fixed_frame(false); | |
1284 | |
1285 // make sure method is not native & not abstract | |
1286 #ifdef ASSERT | |
1287 __ movl(rax, access_flags); | |
1288 { | |
1289 Label L; | |
1290 __ testl(rax, JVM_ACC_NATIVE); | |
1291 __ jcc(Assembler::zero, L); | |
1292 __ stop("tried to execute native method as non-native"); | |
1293 __ bind(L); | |
1294 } | |
1295 { | |
1296 Label L; | |
1297 __ testl(rax, JVM_ACC_ABSTRACT); | |
1298 __ jcc(Assembler::zero, L); | |
1299 __ stop("tried to execute abstract method in interpreter"); | |
1300 __ bind(L); | |
1301 } | |
1302 #endif | |
1303 | |
1304 // Since at this point in the method invocation the exception | |
1305 // handler would try to exit the monitor of synchronized methods | |
1306 // which hasn't been entered yet, we set the thread local variable | |
1307 // _do_not_unlock_if_synchronized to true. The remove_activation | |
1308 // will check this flag. | |
1309 | |
1310 const Address do_not_unlock_if_synchronized(r15_thread, | |
1311 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
1312 __ movbool(do_not_unlock_if_synchronized, true); | |
1313 | |
1314 // increment invocation count & check for overflow | |
1315 Label invocation_counter_overflow; | |
1316 Label profile_method; | |
1317 Label profile_method_continue; | |
1318 if (inc_counter) { | |
1319 generate_counter_incr(&invocation_counter_overflow, | |
1320 &profile_method, | |
1321 &profile_method_continue); | |
1322 if (ProfileInterpreter) { | |
1323 __ bind(profile_method_continue); | |
1324 } | |
1325 } | |
1326 | |
1327 Label continue_after_compile; | |
1328 __ bind(continue_after_compile); | |
1329 | |
1330 // check for synchronized interpreted methods | |
1331 bang_stack_shadow_pages(false); | |
1332 | |
1333 // reset the _do_not_unlock_if_synchronized flag | |
1334 __ movbool(do_not_unlock_if_synchronized, false); | |
1335 | |
1336 // check for synchronized methods | |
1337 // Must happen AFTER invocation_counter check and stack overflow check, | |
1338 // so method is not locked if overflows. | |
1339 if (synchronized) { | |
1340 // Allocate monitor and lock method | |
1341 lock_method(); | |
1342 } else { | |
1343 // no synchronization necessary | |
1344 #ifdef ASSERT | |
1345 { | |
1346 Label L; | |
1347 __ movl(rax, access_flags); | |
1348 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
1349 __ jcc(Assembler::zero, L); | |
1350 __ stop("method needs synchronization"); | |
1351 __ bind(L); | |
1352 } | |
1353 #endif | |
1354 } | |
1355 | |
1356 // start execution | |
1357 #ifdef ASSERT | |
1358 { | |
1359 Label L; | |
1360 const Address monitor_block_top (rbp, | |
1361 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 1362 __ movptr(rax, monitor_block_top); |
1363 __ cmpptr(rax, rsp); | |
0 | 1364 __ jcc(Assembler::equal, L); |
1365 __ stop("broken stack frame setup in interpreter"); | |
1366 __ bind(L); | |
1367 } | |
1368 #endif | |
1369 | |
1370 // jvmti support | |
1371 __ notify_method_entry(); | |
1372 | |
1373 __ dispatch_next(vtos); | |
1374 | |
1375 // invocation counter overflow | |
1376 if (inc_counter) { | |
1377 if (ProfileInterpreter) { | |
1378 // We have decided to profile this method in the interpreter | |
1379 __ bind(profile_method); | |
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1380 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
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1381 __ set_method_data_pointer_for_bcp(); |
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1382 __ get_method(rbx); |
0 | 1383 __ jmp(profile_method_continue); |
1384 } | |
1385 // Handle overflow of counter and compile method | |
1386 __ bind(invocation_counter_overflow); | |
1387 generate_counter_overflow(&continue_after_compile); | |
1388 } | |
1389 | |
1390 return entry_point; | |
1391 } | |
1392 | |
1393 // Entry points | |
1394 // | |
1395 // Here we generate the various kind of entries into the interpreter. | |
1396 // The two main entry type are generic bytecode methods and native | |
1397 // call method. These both come in synchronized and non-synchronized | |
1398 // versions but the frame layout they create is very similar. The | |
1399 // other method entry types are really just special purpose entries | |
1400 // that are really entry and interpretation all in one. These are for | |
1401 // trivial methods like accessor, empty, or special math methods. | |
1402 // | |
1403 // When control flow reaches any of the entry types for the interpreter | |
1404 // the following holds -> | |
1405 // | |
1406 // Arguments: | |
1407 // | |
1408 // rbx: methodOop | |
1409 // | |
1410 // Stack layout immediately at entry | |
1411 // | |
1412 // [ return address ] <--- rsp | |
1413 // [ parameter n ] | |
1414 // ... | |
1415 // [ parameter 1 ] | |
1416 // [ expression stack ] (caller's java expression stack) | |
1417 | |
1418 // Assuming that we don't go to one of the trivial specialized entries | |
1419 // the stack will look like below when we are ready to execute the | |
1420 // first bytecode (or call the native routine). The register usage | |
1421 // will be as the template based interpreter expects (see | |
1422 // interpreter_amd64.hpp). | |
1423 // | |
1424 // local variables follow incoming parameters immediately; i.e. | |
1425 // the return address is moved to the end of the locals). | |
1426 // | |
1427 // [ monitor entry ] <--- rsp | |
1428 // ... | |
1429 // [ monitor entry ] | |
1430 // [ expr. stack bottom ] | |
1431 // [ saved r13 ] | |
1432 // [ current r14 ] | |
1433 // [ methodOop ] | |
1434 // [ saved ebp ] <--- rbp | |
1435 // [ return address ] | |
1436 // [ local variable m ] | |
1437 // ... | |
1438 // [ local variable 1 ] | |
1439 // [ parameter n ] | |
1440 // ... | |
1441 // [ parameter 1 ] <--- r14 | |
1442 | |
1443 address AbstractInterpreterGenerator::generate_method_entry( | |
1444 AbstractInterpreter::MethodKind kind) { | |
1445 // determine code generation flags | |
1446 bool synchronized = false; | |
1447 address entry_point = NULL; | |
1448 | |
1449 switch (kind) { | |
1450 case Interpreter::zerolocals : break; | |
1451 case Interpreter::zerolocals_synchronized: synchronized = true; break; | |
1452 case Interpreter::native : entry_point = ((InterpreterGenerator*) this)->generate_native_entry(false); break; | |
1453 case Interpreter::native_synchronized : entry_point = ((InterpreterGenerator*) this)->generate_native_entry(true); break; | |
1454 case Interpreter::empty : entry_point = ((InterpreterGenerator*) this)->generate_empty_entry(); break; | |
1455 case Interpreter::accessor : entry_point = ((InterpreterGenerator*) this)->generate_accessor_entry(); break; | |
1456 case Interpreter::abstract : entry_point = ((InterpreterGenerator*) this)->generate_abstract_entry(); break; | |
710 | 1457 case Interpreter::method_handle : entry_point = ((InterpreterGenerator*) this)->generate_method_handle_entry();break; |
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1458 |
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1459 case Interpreter::java_lang_math_sin : // fall thru |
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1460 case Interpreter::java_lang_math_cos : // fall thru |
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1461 case Interpreter::java_lang_math_tan : // fall thru |
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1462 case Interpreter::java_lang_math_abs : // fall thru |
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1463 case Interpreter::java_lang_math_log : // fall thru |
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1464 case Interpreter::java_lang_math_log10 : // fall thru |
0 | 1465 case Interpreter::java_lang_math_sqrt : entry_point = ((InterpreterGenerator*) this)->generate_math_entry(kind); break; |
1466 default : ShouldNotReachHere(); break; | |
1467 } | |
1468 | |
1469 if (entry_point) { | |
1470 return entry_point; | |
1471 } | |
1472 | |
1473 return ((InterpreterGenerator*) this)-> | |
1474 generate_normal_entry(synchronized); | |
1475 } | |
1476 | |
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1477 // These should never be compiled since the interpreter will prefer |
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1478 // the compiled version to the intrinsic version. |
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1479 bool AbstractInterpreter::can_be_compiled(methodHandle m) { |
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1480 switch (method_kind(m)) { |
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1481 case Interpreter::java_lang_math_sin : // fall thru |
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1482 case Interpreter::java_lang_math_cos : // fall thru |
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1483 case Interpreter::java_lang_math_tan : // fall thru |
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1484 case Interpreter::java_lang_math_abs : // fall thru |
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1485 case Interpreter::java_lang_math_log : // fall thru |
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1486 case Interpreter::java_lang_math_log10 : // fall thru |
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1487 case Interpreter::java_lang_math_sqrt : |
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1488 return false; |
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1489 default: |
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1490 return true; |
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1491 } |
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1492 } |
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1493 |
0 | 1494 // How much stack a method activation needs in words. |
1495 int AbstractInterpreter::size_top_interpreter_activation(methodOop method) { | |
1496 const int entry_size = frame::interpreter_frame_monitor_size(); | |
1497 | |
1498 // total overhead size: entry_size + (saved rbp thru expr stack | |
1499 // bottom). be sure to change this if you add/subtract anything | |
1500 // to/from the overhead area | |
1501 const int overhead_size = | |
1502 -(frame::interpreter_frame_initial_sp_offset) + entry_size; | |
1503 | |
1504 const int stub_code = frame::entry_frame_after_call_words; | |
710 | 1505 const int extra_stack = methodOopDesc::extra_stack_entries(); |
1506 const int method_stack = (method->max_locals() + method->max_stack() + extra_stack) * | |
1506 | 1507 Interpreter::stackElementWords; |
0 | 1508 return (overhead_size + method_stack + stub_code); |
1509 } | |
1510 | |
1511 int AbstractInterpreter::layout_activation(methodOop method, | |
1512 int tempcount, | |
1513 int popframe_extra_args, | |
1514 int moncount, | |
1515 int callee_param_count, | |
1516 int callee_locals, | |
1517 frame* caller, | |
1518 frame* interpreter_frame, | |
1519 bool is_top_frame) { | |
1520 // Note: This calculation must exactly parallel the frame setup | |
1521 // in AbstractInterpreterGenerator::generate_method_entry. | |
1522 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
1523 // The frame interpreter_frame, if not NULL, is guaranteed to be the | |
1524 // right size, as determined by a previous call to this method. | |
1525 // It is also guaranteed to be walkable even though it is in a skeletal state | |
1526 | |
1527 // fixed size of an interpreter frame: | |
1506 | 1528 int max_locals = method->max_locals() * Interpreter::stackElementWords; |
0 | 1529 int extra_locals = (method->max_locals() - method->size_of_parameters()) * |
1506 | 1530 Interpreter::stackElementWords; |
0 | 1531 |
1532 int overhead = frame::sender_sp_offset - | |
1533 frame::interpreter_frame_initial_sp_offset; | |
1534 // Our locals were accounted for by the caller (or last_frame_adjust | |
1535 // on the transistion) Since the callee parameters already account | |
1536 // for the callee's params we only need to account for the extra | |
1537 // locals. | |
1538 int size = overhead + | |
1506 | 1539 (callee_locals - callee_param_count)*Interpreter::stackElementWords + |
0 | 1540 moncount * frame::interpreter_frame_monitor_size() + |
1506 | 1541 tempcount* Interpreter::stackElementWords + popframe_extra_args; |
0 | 1542 if (interpreter_frame != NULL) { |
1543 #ifdef ASSERT | |
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1544 if (!EnableMethodHandles) |
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1545 // @@@ FIXME: Should we correct interpreter_frame_sender_sp in the calling sequences? |
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1546 // Probably, since deoptimization doesn't work yet. |
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1547 assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable"); |
0 | 1548 assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)"); |
1549 #endif | |
1550 | |
1551 interpreter_frame->interpreter_frame_set_method(method); | |
1552 // NOTE the difference in using sender_sp and | |
1553 // interpreter_frame_sender_sp interpreter_frame_sender_sp is | |
1554 // the original sp of the caller (the unextended_sp) and | |
1555 // sender_sp is fp+16 XXX | |
1556 intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; | |
1557 | |
1558 interpreter_frame->interpreter_frame_set_locals(locals); | |
1559 BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); | |
1560 BasicObjectLock* monbot = montop - moncount; | |
1561 interpreter_frame->interpreter_frame_set_monitor_end(monbot); | |
1562 | |
1563 // Set last_sp | |
1564 intptr_t* esp = (intptr_t*) monbot - | |
1506 | 1565 tempcount*Interpreter::stackElementWords - |
0 | 1566 popframe_extra_args; |
1567 interpreter_frame->interpreter_frame_set_last_sp(esp); | |
1568 | |
1569 // All frames but the initial (oldest) interpreter frame we fill in have | |
1570 // a value for sender_sp that allows walking the stack but isn't | |
1571 // truly correct. Correct the value here. | |
1572 if (extra_locals != 0 && | |
1573 interpreter_frame->sender_sp() == | |
1574 interpreter_frame->interpreter_frame_sender_sp()) { | |
1575 interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + | |
1576 extra_locals); | |
1577 } | |
1578 *interpreter_frame->interpreter_frame_cache_addr() = | |
1579 method->constants()->cache(); | |
1580 } | |
1581 return size; | |
1582 } | |
1583 | |
1584 //----------------------------------------------------------------------------- | |
1585 // Exceptions | |
1586 | |
1587 void TemplateInterpreterGenerator::generate_throw_exception() { | |
1588 // Entry point in previous activation (i.e., if the caller was | |
1589 // interpreted) | |
1590 Interpreter::_rethrow_exception_entry = __ pc(); | |
1591 // Restore sp to interpreter_frame_last_sp even though we are going | |
1592 // to empty the expression stack for the exception processing. | |
304 | 1593 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 1594 // rax: exception |
1595 // rdx: return address/pc that threw exception | |
1596 __ restore_bcp(); // r13 points to call/send | |
1597 __ restore_locals(); | |
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1598 __ reinit_heapbase(); // restore r12 as heapbase. |
0 | 1599 // Entry point for exceptions thrown within interpreter code |
1600 Interpreter::_throw_exception_entry = __ pc(); | |
1601 // expression stack is undefined here | |
1602 // rax: exception | |
1603 // r13: exception bcp | |
1604 __ verify_oop(rax); | |
304 | 1605 __ mov(c_rarg1, rax); |
0 | 1606 |
1607 // expression stack must be empty before entering the VM in case of | |
1608 // an exception | |
1609 __ empty_expression_stack(); | |
1610 // find exception handler address and preserve exception oop | |
1611 __ call_VM(rdx, | |
1612 CAST_FROM_FN_PTR(address, | |
1613 InterpreterRuntime::exception_handler_for_exception), | |
1614 c_rarg1); | |
1615 // rax: exception handler entry point | |
1616 // rdx: preserved exception oop | |
1617 // r13: bcp for exception handler | |
1618 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
1619 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
1620 | |
1621 // If the exception is not handled in the current frame the frame is | |
1622 // removed and the exception is rethrown (i.e. exception | |
1623 // continuation is _rethrow_exception). | |
1624 // | |
1625 // Note: At this point the bci is still the bxi for the instruction | |
1626 // which caused the exception and the expression stack is | |
1627 // empty. Thus, for any VM calls at this point, GC will find a legal | |
1628 // oop map (with empty expression stack). | |
1629 | |
1630 // In current activation | |
1631 // tos: exception | |
1632 // esi: exception bcp | |
1633 | |
1634 // | |
1635 // JVMTI PopFrame support | |
1636 // | |
1637 | |
1638 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
1639 __ empty_expression_stack(); | |
1640 // Set the popframe_processing bit in pending_popframe_condition | |
1641 // indicating that we are currently handling popframe, so that | |
1642 // call_VMs that may happen later do not trigger new popframe | |
1643 // handling cycles. | |
1644 __ movl(rdx, Address(r15_thread, JavaThread::popframe_condition_offset())); | |
1645 __ orl(rdx, JavaThread::popframe_processing_bit); | |
1646 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), rdx); | |
1647 | |
1648 { | |
1649 // Check to see whether we are returning to a deoptimized frame. | |
1650 // (The PopFrame call ensures that the caller of the popped frame is | |
1651 // either interpreted or compiled and deoptimizes it if compiled.) | |
1652 // In this case, we can't call dispatch_next() after the frame is | |
1653 // popped, but instead must save the incoming arguments and restore | |
1654 // them after deoptimization has occurred. | |
1655 // | |
1656 // Note that we don't compare the return PC against the | |
1657 // deoptimization blob's unpack entry because of the presence of | |
1658 // adapter frames in C2. | |
1659 Label caller_not_deoptimized; | |
304 | 1660 __ movptr(c_rarg1, Address(rbp, frame::return_addr_offset * wordSize)); |
0 | 1661 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
1662 InterpreterRuntime::interpreter_contains), c_rarg1); | |
1663 __ testl(rax, rax); | |
1664 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
1665 | |
1666 // Compute size of arguments for saving when returning to | |
1667 // deoptimized caller | |
1668 __ get_method(rax); | |
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1669 __ load_unsigned_short(rax, Address(rax, in_bytes(methodOopDesc:: |
0 | 1670 size_of_parameters_offset()))); |
1506 | 1671 __ shll(rax, Interpreter::logStackElementSize); |
0 | 1672 __ restore_locals(); // XXX do we need this? |
304 | 1673 __ subptr(r14, rax); |
1674 __ addptr(r14, wordSize); | |
0 | 1675 // Save these arguments |
1676 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, | |
1677 Deoptimization:: | |
1678 popframe_preserve_args), | |
1679 r15_thread, rax, r14); | |
1680 | |
1681 __ remove_activation(vtos, rdx, | |
1682 /* throw_monitor_exception */ false, | |
1683 /* install_monitor_exception */ false, | |
1684 /* notify_jvmdi */ false); | |
1685 | |
1686 // Inform deoptimization that it is responsible for restoring | |
1687 // these arguments | |
1688 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
1689 JavaThread::popframe_force_deopt_reexecution_bit); | |
1690 | |
1691 // Continue in deoptimization handler | |
1692 __ jmp(rdx); | |
1693 | |
1694 __ bind(caller_not_deoptimized); | |
1695 } | |
1696 | |
1697 __ remove_activation(vtos, rdx, /* rdx result (retaddr) is not used */ | |
1698 /* throw_monitor_exception */ false, | |
1699 /* install_monitor_exception */ false, | |
1700 /* notify_jvmdi */ false); | |
1701 | |
1702 // Finish with popframe handling | |
1703 // A previous I2C followed by a deoptimization might have moved the | |
1704 // outgoing arguments further up the stack. PopFrame expects the | |
1705 // mutations to those outgoing arguments to be preserved and other | |
1706 // constraints basically require this frame to look exactly as | |
1707 // though it had previously invoked an interpreted activation with | |
1708 // no space between the top of the expression stack (current | |
1709 // last_sp) and the top of stack. Rather than force deopt to | |
1710 // maintain this kind of invariant all the time we call a small | |
1711 // fixup routine to move the mutated arguments onto the top of our | |
1712 // expression stack if necessary. | |
304 | 1713 __ mov(c_rarg1, rsp); |
1714 __ movptr(c_rarg2, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
0 | 1715 // PC must point into interpreter here |
1716 __ set_last_Java_frame(noreg, rbp, __ pc()); | |
1717 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), r15_thread, c_rarg1, c_rarg2); | |
1718 __ reset_last_Java_frame(true, true); | |
1719 // Restore the last_sp and null it out | |
304 | 1720 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
1721 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); | |
0 | 1722 |
1723 __ restore_bcp(); // XXX do we need this? | |
1724 __ restore_locals(); // XXX do we need this? | |
1725 // The method data pointer was incremented already during | |
1726 // call profiling. We have to restore the mdp for the current bcp. | |
1727 if (ProfileInterpreter) { | |
1728 __ set_method_data_pointer_for_bcp(); | |
1729 } | |
1730 | |
1731 // Clear the popframe condition flag | |
1732 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
1733 JavaThread::popframe_inactive); | |
1734 | |
1735 __ dispatch_next(vtos); | |
1736 // end of PopFrame support | |
1737 | |
1738 Interpreter::_remove_activation_entry = __ pc(); | |
1739 | |
1740 // preserve exception over this code sequence | |
1741 __ pop_ptr(rax); | |
304 | 1742 __ movptr(Address(r15_thread, JavaThread::vm_result_offset()), rax); |
0 | 1743 // remove the activation (without doing throws on illegalMonitorExceptions) |
1744 __ remove_activation(vtos, rdx, false, true, false); | |
1745 // restore exception | |
304 | 1746 __ movptr(rax, Address(r15_thread, JavaThread::vm_result_offset())); |
1747 __ movptr(Address(r15_thread, JavaThread::vm_result_offset()), (int32_t)NULL_WORD); | |
0 | 1748 __ verify_oop(rax); |
1749 | |
1750 // In between activations - previous activation type unknown yet | |
1751 // compute continuation point - the continuation point expects the | |
1752 // following registers set up: | |
1753 // | |
1754 // rax: exception | |
1755 // rdx: return address/pc that threw exception | |
1756 // rsp: expression stack of caller | |
1757 // rbp: ebp of caller | |
304 | 1758 __ push(rax); // save exception |
1759 __ push(rdx); // save return address | |
0 | 1760 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
1761 SharedRuntime::exception_handler_for_return_address), | |
1295 | 1762 r15_thread, rdx); |
304 | 1763 __ mov(rbx, rax); // save exception handler |
1764 __ pop(rdx); // restore return address | |
1765 __ pop(rax); // restore exception | |
0 | 1766 // Note that an "issuing PC" is actually the next PC after the call |
1767 __ jmp(rbx); // jump to exception | |
1768 // handler of caller | |
1769 } | |
1770 | |
1771 | |
1772 // | |
1773 // JVMTI ForceEarlyReturn support | |
1774 // | |
1775 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
1776 address entry = __ pc(); | |
1777 | |
1778 __ restore_bcp(); | |
1779 __ restore_locals(); | |
1780 __ empty_expression_stack(); | |
1781 __ load_earlyret_value(state); | |
1782 | |
304 | 1783 __ movptr(rdx, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
0 | 1784 Address cond_addr(rdx, JvmtiThreadState::earlyret_state_offset()); |
1785 | |
1786 // Clear the earlyret state | |
1787 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
1788 | |
1789 __ remove_activation(state, rsi, | |
1790 false, /* throw_monitor_exception */ | |
1791 false, /* install_monitor_exception */ | |
1792 true); /* notify_jvmdi */ | |
1793 __ jmp(rsi); | |
1794 | |
1795 return entry; | |
1796 } // end of ForceEarlyReturn support | |
1797 | |
1798 | |
1799 //----------------------------------------------------------------------------- | |
1800 // Helper for vtos entry point generation | |
1801 | |
1802 void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t, | |
1803 address& bep, | |
1804 address& cep, | |
1805 address& sep, | |
1806 address& aep, | |
1807 address& iep, | |
1808 address& lep, | |
1809 address& fep, | |
1810 address& dep, | |
1811 address& vep) { | |
1812 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
1813 Label L; | |
1814 aep = __ pc(); __ push_ptr(); __ jmp(L); | |
1815 fep = __ pc(); __ push_f(); __ jmp(L); | |
1816 dep = __ pc(); __ push_d(); __ jmp(L); | |
1817 lep = __ pc(); __ push_l(); __ jmp(L); | |
1818 bep = cep = sep = | |
1819 iep = __ pc(); __ push_i(); | |
1820 vep = __ pc(); | |
1821 __ bind(L); | |
1822 generate_and_dispatch(t); | |
1823 } | |
1824 | |
1825 | |
1826 //----------------------------------------------------------------------------- | |
1827 // Generation of individual instructions | |
1828 | |
1829 // helpers for generate_and_dispatch | |
1830 | |
1831 | |
1832 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
1833 : TemplateInterpreterGenerator(code) { | |
1834 generate_all(); // down here so it can be "virtual" | |
1835 } | |
1836 | |
1837 //----------------------------------------------------------------------------- | |
1838 | |
1839 // Non-product code | |
1840 #ifndef PRODUCT | |
1841 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
1842 address entry = __ pc(); | |
1843 | |
1844 __ push(state); | |
304 | 1845 __ push(c_rarg0); |
1846 __ push(c_rarg1); | |
1847 __ push(c_rarg2); | |
1848 __ push(c_rarg3); | |
1849 __ mov(c_rarg2, rax); // Pass itos | |
0 | 1850 #ifdef _WIN64 |
1851 __ movflt(xmm3, xmm0); // Pass ftos | |
1852 #endif | |
1853 __ call_VM(noreg, | |
1854 CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), | |
1855 c_rarg1, c_rarg2, c_rarg3); | |
304 | 1856 __ pop(c_rarg3); |
1857 __ pop(c_rarg2); | |
1858 __ pop(c_rarg1); | |
1859 __ pop(c_rarg0); | |
0 | 1860 __ pop(state); |
1861 __ ret(0); // return from result handler | |
1862 | |
1863 return entry; | |
1864 } | |
1865 | |
1866 void TemplateInterpreterGenerator::count_bytecode() { | |
1867 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); | |
1868 } | |
1869 | |
1870 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
1871 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); | |
1872 } | |
1873 | |
1874 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
1875 __ mov32(rbx, ExternalAddress((address) &BytecodePairHistogram::_index)); | |
1876 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
1877 __ orl(rbx, | |
1878 ((int) t->bytecode()) << | |
1879 BytecodePairHistogram::log2_number_of_codes); | |
1880 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
1881 __ lea(rscratch1, ExternalAddress((address) BytecodePairHistogram::_counters)); | |
1882 __ incrementl(Address(rscratch1, rbx, Address::times_4)); | |
1883 } | |
1884 | |
1885 | |
1886 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
1887 // Call a little run-time stub to avoid blow-up for each bytecode. | |
1888 // The run-time runtime saves the right registers, depending on | |
1889 // the tosca in-state for the given template. | |
1890 | |
1891 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
1892 "entry must have been generated"); | |
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1893 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1894 __ andptr(rsp, -16); // align stack as required by ABI |
0 | 1895 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); |
304 | 1896 __ mov(rsp, r12); // restore sp |
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1897 __ reinit_heapbase(); |
0 | 1898 } |
1899 | |
1900 | |
1901 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
1902 Label L; | |
1903 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
1904 StopInterpreterAt); | |
1905 __ jcc(Assembler::notEqual, L); | |
1906 __ int3(); | |
1907 __ bind(L); | |
1908 } | |
1909 #endif // !PRODUCT | |
304 | 1910 #endif // ! CC_INTERP |