Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateInterpreter_x86_64.cpp @ 6953:606964349cf4
undid Graal specialization of SerializePageShiftCount as it is unecessary after the _graal_multinewarray_storage field was removed from the JavaThread class
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 14 Nov 2012 16:14:34 +0100 |
parents | e522a00b91aa |
children | 291ffc492eb6 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "asm/assembler.hpp" | |
27 #include "interpreter/bytecodeHistogram.hpp" | |
28 #include "interpreter/interpreter.hpp" | |
29 #include "interpreter/interpreterGenerator.hpp" | |
30 #include "interpreter/interpreterRuntime.hpp" | |
31 #include "interpreter/templateTable.hpp" | |
32 #include "oops/arrayOop.hpp" | |
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33 #include "oops/methodData.hpp" |
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34 #include "oops/method.hpp" |
1972 | 35 #include "oops/oop.inline.hpp" |
36 #include "prims/jvmtiExport.hpp" | |
37 #include "prims/jvmtiThreadState.hpp" | |
38 #include "runtime/arguments.hpp" | |
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39 #include "runtime/compilationPolicy.hpp" |
1972 | 40 #include "runtime/deoptimization.hpp" |
41 #include "runtime/frame.inline.hpp" | |
42 #include "runtime/sharedRuntime.hpp" | |
43 #include "runtime/stubRoutines.hpp" | |
44 #include "runtime/synchronizer.hpp" | |
45 #include "runtime/timer.hpp" | |
46 #include "runtime/vframeArray.hpp" | |
47 #include "utilities/debug.hpp" | |
0 | 48 |
49 #define __ _masm-> | |
50 | |
304 | 51 #ifndef CC_INTERP |
52 | |
0 | 53 const int method_offset = frame::interpreter_frame_method_offset * wordSize; |
54 const int bci_offset = frame::interpreter_frame_bcx_offset * wordSize; | |
55 const int locals_offset = frame::interpreter_frame_locals_offset * wordSize; | |
56 | |
57 //----------------------------------------------------------------------------- | |
58 | |
59 address TemplateInterpreterGenerator::generate_StackOverflowError_handler() { | |
60 address entry = __ pc(); | |
61 | |
62 #ifdef ASSERT | |
63 { | |
64 Label L; | |
304 | 65 __ lea(rax, Address(rbp, |
66 frame::interpreter_frame_monitor_block_top_offset * | |
67 wordSize)); | |
68 __ cmpptr(rax, rsp); // rax = maximal rsp for current rbp (stack | |
69 // grows negative) | |
0 | 70 __ jcc(Assembler::aboveEqual, L); // check if frame is complete |
71 __ stop ("interpreter frame not set up"); | |
72 __ bind(L); | |
73 } | |
74 #endif // ASSERT | |
75 // Restore bcp under the assumption that the current frame is still | |
76 // interpreted | |
77 __ restore_bcp(); | |
78 | |
79 // expression stack must be empty before entering the VM if an | |
80 // exception happened | |
81 __ empty_expression_stack(); | |
82 // throw exception | |
83 __ call_VM(noreg, | |
84 CAST_FROM_FN_PTR(address, | |
85 InterpreterRuntime::throw_StackOverflowError)); | |
86 return entry; | |
87 } | |
88 | |
89 address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler( | |
90 const char* name) { | |
91 address entry = __ pc(); | |
92 // expression stack must be empty before entering the VM if an | |
93 // exception happened | |
94 __ empty_expression_stack(); | |
95 // setup parameters | |
96 // ??? convention: expect aberrant index in register ebx | |
97 __ lea(c_rarg1, ExternalAddress((address)name)); | |
98 __ call_VM(noreg, | |
99 CAST_FROM_FN_PTR(address, | |
100 InterpreterRuntime:: | |
101 throw_ArrayIndexOutOfBoundsException), | |
102 c_rarg1, rbx); | |
103 return entry; | |
104 } | |
105 | |
106 address TemplateInterpreterGenerator::generate_ClassCastException_handler() { | |
107 address entry = __ pc(); | |
108 | |
109 // object is at TOS | |
304 | 110 __ pop(c_rarg1); |
0 | 111 |
112 // expression stack must be empty before entering the VM if an | |
113 // exception happened | |
114 __ empty_expression_stack(); | |
115 | |
116 __ call_VM(noreg, | |
117 CAST_FROM_FN_PTR(address, | |
118 InterpreterRuntime:: | |
119 throw_ClassCastException), | |
120 c_rarg1); | |
121 return entry; | |
122 } | |
123 | |
124 address TemplateInterpreterGenerator::generate_exception_handler_common( | |
125 const char* name, const char* message, bool pass_oop) { | |
126 assert(!pass_oop || message == NULL, "either oop or message but not both"); | |
127 address entry = __ pc(); | |
128 if (pass_oop) { | |
129 // object is at TOS | |
304 | 130 __ pop(c_rarg2); |
0 | 131 } |
132 // expression stack must be empty before entering the VM if an | |
133 // exception happened | |
134 __ empty_expression_stack(); | |
135 // setup parameters | |
136 __ lea(c_rarg1, ExternalAddress((address)name)); | |
137 if (pass_oop) { | |
138 __ call_VM(rax, CAST_FROM_FN_PTR(address, | |
139 InterpreterRuntime:: | |
140 create_klass_exception), | |
141 c_rarg1, c_rarg2); | |
142 } else { | |
143 // kind of lame ExternalAddress can't take NULL because | |
144 // external_word_Relocation will assert. | |
145 if (message != NULL) { | |
146 __ lea(c_rarg2, ExternalAddress((address)message)); | |
147 } else { | |
148 __ movptr(c_rarg2, NULL_WORD); | |
149 } | |
150 __ call_VM(rax, | |
151 CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), | |
152 c_rarg1, c_rarg2); | |
153 } | |
154 // throw exception | |
155 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
156 return entry; | |
157 } | |
158 | |
159 | |
160 address TemplateInterpreterGenerator::generate_continuation_for(TosState state) { | |
161 address entry = __ pc(); | |
162 // NULL last_sp until next java call | |
304 | 163 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 164 __ dispatch_next(state); |
165 return entry; | |
166 } | |
167 | |
168 | |
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169 address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step) { |
0 | 170 address entry = __ pc(); |
171 | |
172 // Restore stack bottom in case i2c adjusted stack | |
304 | 173 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
0 | 174 // and NULL it as marker that esp is now tos until next java call |
304 | 175 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 176 |
177 __ restore_bcp(); | |
178 __ restore_locals(); | |
304 | 179 |
1108 | 180 Label L_got_cache, L_giant_index; |
181 if (EnableInvokeDynamic) { | |
182 __ cmpb(Address(r13, 0), Bytecodes::_invokedynamic); | |
183 __ jcc(Assembler::equal, L_giant_index); | |
184 } | |
1565 | 185 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u2)); |
1108 | 186 __ bind(L_got_cache); |
0 | 187 __ movl(rbx, Address(rbx, rcx, |
1108 | 188 Address::times_ptr, |
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189 in_bytes(ConstantPoolCache::base_offset()) + |
0 | 190 3 * wordSize)); |
191 __ andl(rbx, 0xFF); | |
304 | 192 __ lea(rsp, Address(rsp, rbx, Address::times_8)); |
0 | 193 __ dispatch_next(state, step); |
1108 | 194 |
195 // out of the main line of code... | |
196 if (EnableInvokeDynamic) { | |
197 __ bind(L_giant_index); | |
1565 | 198 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u4)); |
1108 | 199 __ jmp(L_got_cache); |
200 } | |
201 | |
0 | 202 return entry; |
203 } | |
204 | |
205 | |
206 address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, | |
207 int step) { | |
208 address entry = __ pc(); | |
209 // NULL last_sp until next java call | |
304 | 210 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 211 __ restore_bcp(); |
212 __ restore_locals(); | |
213 // handle exceptions | |
214 { | |
215 Label L; | |
304 | 216 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
0 | 217 __ jcc(Assembler::zero, L); |
218 __ call_VM(noreg, | |
219 CAST_FROM_FN_PTR(address, | |
220 InterpreterRuntime::throw_pending_exception)); | |
221 __ should_not_reach_here(); | |
222 __ bind(L); | |
223 } | |
224 __ dispatch_next(state, step); | |
225 return entry; | |
226 } | |
227 | |
228 int AbstractInterpreter::BasicType_as_index(BasicType type) { | |
229 int i = 0; | |
230 switch (type) { | |
231 case T_BOOLEAN: i = 0; break; | |
232 case T_CHAR : i = 1; break; | |
233 case T_BYTE : i = 2; break; | |
234 case T_SHORT : i = 3; break; | |
235 case T_INT : i = 4; break; | |
236 case T_LONG : i = 5; break; | |
237 case T_VOID : i = 6; break; | |
238 case T_FLOAT : i = 7; break; | |
239 case T_DOUBLE : i = 8; break; | |
240 case T_OBJECT : i = 9; break; | |
241 case T_ARRAY : i = 9; break; | |
242 default : ShouldNotReachHere(); | |
243 } | |
244 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, | |
245 "index out of bounds"); | |
246 return i; | |
247 } | |
248 | |
249 | |
250 address TemplateInterpreterGenerator::generate_result_handler_for( | |
251 BasicType type) { | |
252 address entry = __ pc(); | |
253 switch (type) { | |
254 case T_BOOLEAN: __ c2bool(rax); break; | |
255 case T_CHAR : __ movzwl(rax, rax); break; | |
256 case T_BYTE : __ sign_extend_byte(rax); break; | |
257 case T_SHORT : __ sign_extend_short(rax); break; | |
258 case T_INT : /* nothing to do */ break; | |
259 case T_LONG : /* nothing to do */ break; | |
260 case T_VOID : /* nothing to do */ break; | |
261 case T_FLOAT : /* nothing to do */ break; | |
262 case T_DOUBLE : /* nothing to do */ break; | |
263 case T_OBJECT : | |
264 // retrieve result from frame | |
304 | 265 __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); |
0 | 266 // and verify it |
267 __ verify_oop(rax); | |
268 break; | |
269 default : ShouldNotReachHere(); | |
270 } | |
271 __ ret(0); // return from result handler | |
272 return entry; | |
273 } | |
274 | |
275 address TemplateInterpreterGenerator::generate_safept_entry_for( | |
276 TosState state, | |
277 address runtime_entry) { | |
278 address entry = __ pc(); | |
279 __ push(state); | |
280 __ call_VM(noreg, runtime_entry); | |
281 __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); | |
282 return entry; | |
283 } | |
284 | |
285 | |
286 | |
287 // Helpers for commoning out cases in the various type of method entries. | |
288 // | |
289 | |
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290 #ifdef GRAAL |
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291 |
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292 void graal_initialize_time(JavaThread* thread) { |
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293 frame fr = thread->last_frame(); |
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294 assert(fr.is_interpreted_frame(), "must come from interpreter"); |
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295 fr.interpreter_frame_method()->set_graal_invocation_time(os::javaTimeNanos()); |
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296 } |
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297 |
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298 #endif // GRAAL |
0 | 299 |
300 // increment invocation count & check for overflow | |
301 // | |
302 // Note: checking for negative value instead of overflow | |
303 // so we have a 'sticky' overflow test | |
304 // | |
305 // rbx: method | |
306 // ecx: invocation counter | |
307 // | |
308 void InterpreterGenerator::generate_counter_incr( | |
309 Label* overflow, | |
310 Label* profile_method, | |
311 Label* profile_method_continue) { | |
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312 const Address invocation_counter(rbx, in_bytes(Method::invocation_counter_offset()) + |
1783 | 313 in_bytes(InvocationCounter::counter_offset())); |
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314 // Note: In tiered we increment either counters in Method* or in MDO depending if we're profiling or not. |
1783 | 315 if (TieredCompilation) { |
316 int increment = InvocationCounter::count_increment; | |
317 int mask = ((1 << Tier0InvokeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
318 Label no_mdo, done; | |
319 if (ProfileInterpreter) { | |
320 // Are we profiling? | |
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321 __ movptr(rax, Address(rbx, Method::method_data_offset())); |
1783 | 322 __ testptr(rax, rax); |
323 __ jccb(Assembler::zero, no_mdo); | |
324 // Increment counter in the MDO | |
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325 const Address mdo_invocation_counter(rax, in_bytes(MethodData::invocation_counter_offset()) + |
1783 | 326 in_bytes(InvocationCounter::counter_offset())); |
327 __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rcx, false, Assembler::zero, overflow); | |
328 __ jmpb(done); | |
329 } | |
330 __ bind(no_mdo); | |
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331 // Increment counter in Method* (we don't need to load it, it's in ecx). |
1783 | 332 __ increment_mask_and_jump(invocation_counter, increment, mask, rcx, true, Assembler::zero, overflow); |
333 __ bind(done); | |
334 } else { | |
335 const Address backedge_counter(rbx, | |
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336 Method::backedge_counter_offset() + |
0 | 337 InvocationCounter::counter_offset()); |
338 | |
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339 if (ProfileInterpreter) { // %%% Merge this into MethodData* |
1783 | 340 __ incrementl(Address(rbx, |
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341 Method::interpreter_invocation_counter_offset())); |
1783 | 342 } |
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343 |
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344 #ifdef GRAAL |
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345 if (CompilationPolicyChoice == 4) { |
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346 Label not_zero; |
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347 __ testl(rcx, InvocationCounter::count_mask_value); |
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348 __ jcc(Assembler::notZero, not_zero); |
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349 |
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350 __ push(rcx); |
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351 __ call_VM(noreg, CAST_FROM_FN_PTR(address, graal_initialize_time), rdx, false); |
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352 __ set_method_data_pointer_for_bcp(); |
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353 __ get_method(rbx); |
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354 __ pop(rcx); |
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355 |
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356 __ testl(rcx, InvocationCounter::count_mask_value); |
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357 __ jcc(Assembler::zero, not_zero); |
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358 __ stop("unexpected counter value in rcx"); |
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359 |
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360 __ bind(not_zero); |
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361 } |
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362 #endif // GRAAL |
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363 |
1783 | 364 // Update standard invocation counters |
365 __ movl(rax, backedge_counter); // load backedge counter | |
0 | 366 |
1783 | 367 __ incrementl(rcx, InvocationCounter::count_increment); |
368 __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits | |
0 | 369 |
1783 | 370 __ movl(invocation_counter, rcx); // save invocation count |
371 __ addl(rcx, rax); // add both counters | |
0 | 372 |
1783 | 373 // profile_method is non-null only for interpreted method so |
374 // profile_method != NULL == !native_call | |
375 | |
376 if (ProfileInterpreter && profile_method != NULL) { | |
377 // Test to see if we should create a method data oop | |
378 __ cmp32(rcx, ExternalAddress((address)&InvocationCounter::InterpreterProfileLimit)); | |
379 __ jcc(Assembler::less, *profile_method_continue); | |
0 | 380 |
1783 | 381 // if no method data exists, go to profile_method |
382 __ test_method_data_pointer(rax, *profile_method); | |
383 } | |
384 | |
385 __ cmp32(rcx, ExternalAddress((address)&InvocationCounter::InterpreterInvocationLimit)); | |
386 __ jcc(Assembler::aboveEqual, *overflow); | |
0 | 387 } |
388 } | |
389 | |
390 void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { | |
391 | |
392 // Asm interpreter on entry | |
393 // r14 - locals | |
394 // r13 - bcp | |
395 // rbx - method | |
396 // edx - cpool --- DOES NOT APPEAR TO BE TRUE | |
397 // rbp - interpreter frame | |
398 | |
399 // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] | |
400 // Everything as it was on entry | |
401 // rdx is not restored. Doesn't appear to really be set. | |
402 | |
403 const Address size_of_parameters(rbx, | |
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404 Method::size_of_parameters_offset()); |
0 | 405 |
406 // InterpreterRuntime::frequency_counter_overflow takes two | |
407 // arguments, the first (thread) is passed by call_VM, the second | |
408 // indicates if the counter overflow occurs at a backwards branch | |
409 // (NULL bcp). We pass zero for it. The call returns the address | |
410 // of the verified entry point for the method or NULL if the | |
411 // compilation did not complete (either went background or bailed | |
412 // out). | |
413 __ movl(c_rarg1, 0); | |
414 __ call_VM(noreg, | |
415 CAST_FROM_FN_PTR(address, | |
416 InterpreterRuntime::frequency_counter_overflow), | |
417 c_rarg1); | |
418 | |
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419 __ movptr(rbx, Address(rbp, method_offset)); // restore Method* |
0 | 420 // Preserve invariant that r13/r14 contain bcp/locals of sender frame |
421 // and jump to the interpreted entry. | |
422 __ jmp(*do_continue, relocInfo::none); | |
423 } | |
424 | |
425 // See if we've got enough room on the stack for locals plus overhead. | |
426 // The expression stack grows down incrementally, so the normal guard | |
427 // page mechanism will work for that. | |
428 // | |
429 // NOTE: Since the additional locals are also always pushed (wasn't | |
430 // obvious in generate_method_entry) so the guard should work for them | |
431 // too. | |
432 // | |
433 // Args: | |
434 // rdx: number of additional locals this frame needs (what we must check) | |
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435 // rbx: Method* |
0 | 436 // |
437 // Kills: | |
438 // rax | |
439 void InterpreterGenerator::generate_stack_overflow_check(void) { | |
440 | |
441 // monitor entry size: see picture of stack set | |
442 // (generate_method_entry) and frame_amd64.hpp | |
443 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
444 | |
445 // total overhead size: entry_size + (saved rbp through expr stack | |
446 // bottom). be sure to change this if you add/subtract anything | |
447 // to/from the overhead area | |
448 const int overhead_size = | |
449 -(frame::interpreter_frame_initial_sp_offset * wordSize) + entry_size; | |
450 | |
451 const int page_size = os::vm_page_size(); | |
452 | |
453 Label after_frame_check; | |
454 | |
455 // see if the frame is greater than one page in size. If so, | |
456 // then we need to verify there is enough stack space remaining | |
457 // for the additional locals. | |
1506 | 458 __ cmpl(rdx, (page_size - overhead_size) / Interpreter::stackElementSize); |
0 | 459 __ jcc(Assembler::belowEqual, after_frame_check); |
460 | |
461 // compute rsp as if this were going to be the last frame on | |
462 // the stack before the red zone | |
463 | |
464 const Address stack_base(r15_thread, Thread::stack_base_offset()); | |
465 const Address stack_size(r15_thread, Thread::stack_size_offset()); | |
466 | |
467 // locals + overhead, in bytes | |
304 | 468 __ mov(rax, rdx); |
1506 | 469 __ shlptr(rax, Interpreter::logStackElementSize); // 2 slots per parameter. |
304 | 470 __ addptr(rax, overhead_size); |
0 | 471 |
472 #ifdef ASSERT | |
473 Label stack_base_okay, stack_size_okay; | |
474 // verify that thread stack base is non-zero | |
304 | 475 __ cmpptr(stack_base, (int32_t)NULL_WORD); |
0 | 476 __ jcc(Assembler::notEqual, stack_base_okay); |
477 __ stop("stack base is zero"); | |
478 __ bind(stack_base_okay); | |
479 // verify that thread stack size is non-zero | |
304 | 480 __ cmpptr(stack_size, 0); |
0 | 481 __ jcc(Assembler::notEqual, stack_size_okay); |
482 __ stop("stack size is zero"); | |
483 __ bind(stack_size_okay); | |
484 #endif | |
485 | |
486 // Add stack base to locals and subtract stack size | |
304 | 487 __ addptr(rax, stack_base); |
488 __ subptr(rax, stack_size); | |
0 | 489 |
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490 // Use the maximum number of pages we might bang. |
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491 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : |
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492 (StackRedPages+StackYellowPages); |
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493 |
0 | 494 // add in the red and yellow zone sizes |
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495 __ addptr(rax, max_pages * page_size); |
0 | 496 |
497 // check against the current stack bottom | |
304 | 498 __ cmpptr(rsp, rax); |
0 | 499 __ jcc(Assembler::above, after_frame_check); |
500 | |
4743 | 501 // Restore sender's sp as SP. This is necessary if the sender's |
502 // frame is an extended compiled frame (see gen_c2i_adapter()) | |
503 // and safer anyway in case of JSR292 adaptations. | |
504 | |
505 __ pop(rax); // return address must be moved if SP is changed | |
506 __ mov(rsp, r13); | |
507 __ push(rax); | |
508 | |
509 // Note: the restored frame is not necessarily interpreted. | |
510 // Use the shared runtime version of the StackOverflowError. | |
511 assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated"); | |
512 __ jump(ExternalAddress(StubRoutines::throw_StackOverflowError_entry())); | |
0 | 513 |
514 // all done with frame size check | |
515 __ bind(after_frame_check); | |
516 } | |
517 | |
518 // Allocate monitor and lock method (asm interpreter) | |
519 // | |
520 // Args: | |
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521 // rbx: Method* |
0 | 522 // r14: locals |
523 // | |
524 // Kills: | |
525 // rax | |
526 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, ...(param regs) | |
527 // rscratch1, rscratch2 (scratch regs) | |
528 void InterpreterGenerator::lock_method(void) { | |
529 // synchronize method | |
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530 const Address access_flags(rbx, Method::access_flags_offset()); |
0 | 531 const Address monitor_block_top( |
532 rbp, | |
533 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
534 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
535 | |
536 #ifdef ASSERT | |
537 { | |
538 Label L; | |
539 __ movl(rax, access_flags); | |
540 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
541 __ jcc(Assembler::notZero, L); | |
542 __ stop("method doesn't need synchronization"); | |
543 __ bind(L); | |
544 } | |
545 #endif // ASSERT | |
546 | |
547 // get synchronization object | |
548 { | |
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549 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
0 | 550 Label done; |
551 __ movl(rax, access_flags); | |
552 __ testl(rax, JVM_ACC_STATIC); | |
553 // get receiver (assume this is frequent case) | |
304 | 554 __ movptr(rax, Address(r14, Interpreter::local_offset_in_bytes(0))); |
0 | 555 __ jcc(Assembler::zero, done); |
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556 __ movptr(rax, Address(rbx, Method::const_offset())); |
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557 __ movptr(rax, Address(rax, ConstMethod::constants_offset())); |
304 | 558 __ movptr(rax, Address(rax, |
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559 ConstantPool::pool_holder_offset_in_bytes())); |
304 | 560 __ movptr(rax, Address(rax, mirror_offset)); |
0 | 561 |
562 #ifdef ASSERT | |
563 { | |
564 Label L; | |
304 | 565 __ testptr(rax, rax); |
0 | 566 __ jcc(Assembler::notZero, L); |
567 __ stop("synchronization object is NULL"); | |
568 __ bind(L); | |
569 } | |
570 #endif // ASSERT | |
571 | |
572 __ bind(done); | |
573 } | |
574 | |
575 // add space for monitor & lock | |
304 | 576 __ subptr(rsp, entry_size); // add space for a monitor entry |
577 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
0 | 578 // store object |
304 | 579 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); |
580 __ movptr(c_rarg1, rsp); // object address | |
0 | 581 __ lock_object(c_rarg1); |
582 } | |
583 | |
584 // Generate a fixed interpreter frame. This is identical setup for | |
585 // interpreted methods and for native methods hence the shared code. | |
586 // | |
587 // Args: | |
588 // rax: return address | |
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589 // rbx: Method* |
0 | 590 // r14: pointer to locals |
591 // r13: sender sp | |
592 // rdx: cp cache | |
593 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
594 // initialize fixed part of activation frame | |
304 | 595 __ push(rax); // save return address |
0 | 596 __ enter(); // save old & set new rbp |
304 | 597 __ push(r13); // set sender sp |
598 __ push((int)NULL_WORD); // leave last_sp as null | |
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599 __ movptr(r13, Address(rbx, Method::const_offset())); // get ConstMethod* |
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600 __ lea(r13, Address(r13, ConstMethod::codes_offset())); // get codebase |
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601 __ push(rbx); // save Method* |
0 | 602 if (ProfileInterpreter) { |
603 Label method_data_continue; | |
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604 __ movptr(rdx, Address(rbx, in_bytes(Method::method_data_offset()))); |
304 | 605 __ testptr(rdx, rdx); |
0 | 606 __ jcc(Assembler::zero, method_data_continue); |
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607 __ addptr(rdx, in_bytes(MethodData::data_offset())); |
0 | 608 __ bind(method_data_continue); |
304 | 609 __ push(rdx); // set the mdp (method data pointer) |
0 | 610 } else { |
304 | 611 __ push(0); |
0 | 612 } |
613 | |
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614 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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615 __ movptr(rdx, Address(rdx, ConstMethod::constants_offset())); |
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616 __ movptr(rdx, Address(rdx, ConstantPool::cache_offset_in_bytes())); |
304 | 617 __ push(rdx); // set constant pool cache |
618 __ push(r14); // set locals pointer | |
0 | 619 if (native_call) { |
304 | 620 __ push(0); // no bcp |
0 | 621 } else { |
304 | 622 __ push(r13); // set bcp |
0 | 623 } |
304 | 624 __ push(0); // reserve word for pointer to expression stack bottom |
625 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
0 | 626 } |
627 | |
628 // End of helpers | |
629 | |
304 | 630 // Various method entries |
631 //------------------------------------------------------------------------------------------------------------------------ | |
632 // | |
633 // | |
634 | |
635 // Call an accessor method (assuming it is resolved, otherwise drop | |
636 // into vanilla (slow path) entry | |
637 address InterpreterGenerator::generate_accessor_entry(void) { | |
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638 // rbx: Method* |
304 | 639 |
640 // r13: senderSP must preserver for slow path, set SP to it on fast path | |
641 | |
642 address entry_point = __ pc(); | |
643 Label xreturn_path; | |
644 | |
645 // do fastpath for resolved accessor methods | |
646 if (UseFastAccessorMethods) { | |
647 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites | |
648 // thereof; parameter size = 1 | |
649 // Note: We can only use this code if the getfield has been resolved | |
650 // and if we don't have a null-pointer exception => check for | |
651 // these conditions first and use slow path if necessary. | |
652 Label slow_path; | |
653 // If we need a safepoint check, generate full interpreter entry. | |
654 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
655 SafepointSynchronize::_not_synchronized); | |
656 | |
657 __ jcc(Assembler::notEqual, slow_path); | |
658 // rbx: method | |
659 __ movptr(rax, Address(rsp, wordSize)); | |
660 | |
661 // check if local 0 != NULL and read field | |
662 __ testptr(rax, rax); | |
663 __ jcc(Assembler::zero, slow_path); | |
664 | |
665 // read first instruction word and extract bytecode @ 1 and index @ 2 | |
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666 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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667 __ movptr(rdi, Address(rdx, ConstMethod::constants_offset())); |
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668 __ movl(rdx, Address(rdx, ConstMethod::codes_offset())); |
304 | 669 // Shift codes right to get the index on the right. |
670 // The bytecode fetched looks like <index><0xb4><0x2a> | |
671 __ shrl(rdx, 2 * BitsPerByte); | |
672 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
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673 __ movptr(rdi, Address(rdi, ConstantPool::cache_offset_in_bytes())); |
304 | 674 |
675 // rax: local 0 | |
676 // rbx: method | |
677 // rdx: constant pool cache index | |
678 // rdi: constant pool cache | |
679 | |
680 // check if getfield has been resolved and read constant pool cache entry | |
681 // check the validity of the cache entry by testing whether _indices field | |
682 // contains Bytecode::_getfield in b1 byte. | |
683 assert(in_words(ConstantPoolCacheEntry::size()) == 4, | |
684 "adjust shift below"); | |
685 __ movl(rcx, | |
686 Address(rdi, | |
687 rdx, | |
688 Address::times_8, | |
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689 ConstantPoolCache::base_offset() + |
304 | 690 ConstantPoolCacheEntry::indices_offset())); |
691 __ shrl(rcx, 2 * BitsPerByte); | |
692 __ andl(rcx, 0xFF); | |
693 __ cmpl(rcx, Bytecodes::_getfield); | |
694 __ jcc(Assembler::notEqual, slow_path); | |
695 | |
696 // Note: constant pool entry is not valid before bytecode is resolved | |
697 __ movptr(rcx, | |
698 Address(rdi, | |
699 rdx, | |
700 Address::times_8, | |
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701 ConstantPoolCache::base_offset() + |
304 | 702 ConstantPoolCacheEntry::f2_offset())); |
703 // edx: flags | |
704 __ movl(rdx, | |
705 Address(rdi, | |
706 rdx, | |
707 Address::times_8, | |
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708 ConstantPoolCache::base_offset() + |
304 | 709 ConstantPoolCacheEntry::flags_offset())); |
710 | |
711 Label notObj, notInt, notByte, notShort; | |
712 const Address field_address(rax, rcx, Address::times_1); | |
713 | |
714 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
715 // because they are different sizes. | |
716 // Use the type from the constant pool cache | |
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717 __ shrl(rdx, ConstantPoolCacheEntry::tos_state_shift); |
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718 // Make sure we don't need to mask edx after the above shift |
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719 ConstantPoolCacheEntry::verify_tos_state_shift(); |
304 | 720 |
721 __ cmpl(rdx, atos); | |
722 __ jcc(Assembler::notEqual, notObj); | |
723 // atos | |
724 __ load_heap_oop(rax, field_address); | |
725 __ jmp(xreturn_path); | |
726 | |
727 __ bind(notObj); | |
728 __ cmpl(rdx, itos); | |
729 __ jcc(Assembler::notEqual, notInt); | |
730 // itos | |
731 __ movl(rax, field_address); | |
732 __ jmp(xreturn_path); | |
733 | |
734 __ bind(notInt); | |
735 __ cmpl(rdx, btos); | |
736 __ jcc(Assembler::notEqual, notByte); | |
737 // btos | |
738 __ load_signed_byte(rax, field_address); | |
739 __ jmp(xreturn_path); | |
740 | |
741 __ bind(notByte); | |
742 __ cmpl(rdx, stos); | |
743 __ jcc(Assembler::notEqual, notShort); | |
744 // stos | |
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745 __ load_signed_short(rax, field_address); |
304 | 746 __ jmp(xreturn_path); |
747 | |
748 __ bind(notShort); | |
749 #ifdef ASSERT | |
750 Label okay; | |
751 __ cmpl(rdx, ctos); | |
752 __ jcc(Assembler::equal, okay); | |
753 __ stop("what type is this?"); | |
754 __ bind(okay); | |
755 #endif | |
756 // ctos | |
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757 __ load_unsigned_short(rax, field_address); |
304 | 758 |
759 __ bind(xreturn_path); | |
760 | |
761 // _ireturn/_areturn | |
762 __ pop(rdi); | |
763 __ mov(rsp, r13); | |
764 __ jmp(rdi); | |
765 __ ret(0); | |
766 | |
767 // generate a vanilla interpreter entry as the slow path | |
768 __ bind(slow_path); | |
769 (void) generate_normal_entry(false); | |
770 } else { | |
771 (void) generate_normal_entry(false); | |
772 } | |
773 | |
774 return entry_point; | |
775 } | |
776 | |
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777 // Method entry for java.lang.ref.Reference.get. |
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778 address InterpreterGenerator::generate_Reference_get_entry(void) { |
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779 #ifndef SERIALGC |
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780 // Code: _aload_0, _getfield, _areturn |
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781 // parameter size = 1 |
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782 // |
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783 // The code that gets generated by this routine is split into 2 parts: |
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784 // 1. The "intrinsified" code for G1 (or any SATB based GC), |
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785 // 2. The slow path - which is an expansion of the regular method entry. |
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786 // |
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787 // Notes:- |
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788 // * In the G1 code we do not check whether we need to block for |
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789 // a safepoint. If G1 is enabled then we must execute the specialized |
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790 // code for Reference.get (except when the Reference object is null) |
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791 // so that we can log the value in the referent field with an SATB |
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792 // update buffer. |
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793 // If the code for the getfield template is modified so that the |
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794 // G1 pre-barrier code is executed when the current method is |
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795 // Reference.get() then going through the normal method entry |
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796 // will be fine. |
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797 // * The G1 code can, however, check the receiver object (the instance |
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798 // of java.lang.Reference) and jump to the slow path if null. If the |
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799 // Reference object is null then we obviously cannot fetch the referent |
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800 // and so we don't need to call the G1 pre-barrier. Thus we can use the |
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801 // regular method entry code to generate the NPE. |
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802 // |
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803 // This code is based on generate_accessor_enty. |
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804 // |
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805 // rbx: Method* |
3249
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806 |
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807 // r13: senderSP must preserve for slow path, set SP to it on fast path |
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808 |
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809 address entry = __ pc(); |
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810 |
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811 const int referent_offset = java_lang_ref_Reference::referent_offset; |
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812 guarantee(referent_offset > 0, "referent offset not initialized"); |
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813 |
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814 if (UseG1GC) { |
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815 Label slow_path; |
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816 // rbx: method |
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817 |
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818 // Check if local 0 != NULL |
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819 // If the receiver is null then it is OK to jump to the slow path. |
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820 __ movptr(rax, Address(rsp, wordSize)); |
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821 |
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822 __ testptr(rax, rax); |
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823 __ jcc(Assembler::zero, slow_path); |
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824 |
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825 // rax: local 0 |
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826 // rbx: method (but can be used as scratch now) |
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827 // rdx: scratch |
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828 // rdi: scratch |
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829 |
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830 // Generate the G1 pre-barrier code to log the value of |
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831 // the referent field in an SATB buffer. |
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832 |
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833 // Load the value of the referent field. |
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834 const Address field_address(rax, referent_offset); |
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835 __ load_heap_oop(rax, field_address); |
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836 |
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837 // Generate the G1 pre-barrier code to log the value of |
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838 // the referent field in an SATB buffer. |
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839 __ g1_write_barrier_pre(noreg /* obj */, |
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840 rax /* pre_val */, |
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841 r15_thread /* thread */, |
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842 rbx /* tmp */, |
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843 true /* tosca_live */, |
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844 true /* expand_call */); |
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845 |
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846 // _areturn |
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847 __ pop(rdi); // get return address |
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848 __ mov(rsp, r13); // set sp to sender sp |
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849 __ jmp(rdi); |
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850 __ ret(0); |
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851 |
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852 // generate a vanilla interpreter entry as the slow path |
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853 __ bind(slow_path); |
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854 (void) generate_normal_entry(false); |
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855 |
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856 return entry; |
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857 } |
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858 #endif // SERIALGC |
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859 |
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860 // If G1 is not enabled then attempt to go through the accessor entry point |
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861 // Reference.get is an accessor |
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862 return generate_accessor_entry(); |
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863 } |
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864 |
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865 |
0 | 866 // Interpreter stub for calling a native method. (asm interpreter) |
867 // This sets up a somewhat different looking stack for calling the | |
868 // native method than the typical interpreter frame setup. | |
869 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
870 // determine code generation flags | |
871 bool inc_counter = UseCompiler || CountCompiledCalls; | |
872 | |
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873 // rbx: Method* |
0 | 874 // r13: sender sp |
875 | |
876 address entry_point = __ pc(); | |
877 | |
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878 const Address size_of_parameters(rbx, Method:: |
0 | 879 size_of_parameters_offset()); |
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880 const Address invocation_counter(rbx, Method:: |
0 | 881 invocation_counter_offset() + |
882 InvocationCounter::counter_offset()); | |
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883 const Address access_flags (rbx, Method::access_flags_offset()); |
0 | 884 |
885 // get parameter size (always needed) | |
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886 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 887 |
888 // native calls don't need the stack size check since they have no | |
889 // expression stack and the arguments are already on the stack and | |
890 // we only add a handful of words to the stack | |
891 | |
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892 // rbx: Method* |
0 | 893 // rcx: size of parameters |
894 // r13: sender sp | |
304 | 895 __ pop(rax); // get return address |
0 | 896 |
897 // for natives the size of locals is zero | |
898 | |
899 // compute beginning of parameters (r14) | |
304 | 900 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
0 | 901 |
902 // add 2 zero-initialized slots for native calls | |
903 // initialize result_handler slot | |
304 | 904 __ push((int) NULL_WORD); |
0 | 905 // slot for oop temp |
906 // (static native method holder mirror/jni oop result) | |
304 | 907 __ push((int) NULL_WORD); |
0 | 908 |
909 if (inc_counter) { | |
910 __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
911 } | |
912 | |
913 // initialize fixed part of activation frame | |
914 generate_fixed_frame(true); | |
915 | |
916 // make sure method is native & not abstract | |
917 #ifdef ASSERT | |
918 __ movl(rax, access_flags); | |
919 { | |
920 Label L; | |
921 __ testl(rax, JVM_ACC_NATIVE); | |
922 __ jcc(Assembler::notZero, L); | |
923 __ stop("tried to execute non-native method as native"); | |
924 __ bind(L); | |
925 } | |
926 { | |
927 Label L; | |
928 __ testl(rax, JVM_ACC_ABSTRACT); | |
929 __ jcc(Assembler::zero, L); | |
930 __ stop("tried to execute abstract method in interpreter"); | |
931 __ bind(L); | |
932 } | |
933 #endif | |
934 | |
935 // Since at this point in the method invocation the exception handler | |
936 // would try to exit the monitor of synchronized methods which hasn't | |
937 // been entered yet, we set the thread local variable | |
938 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
939 // check this flag. | |
940 | |
941 const Address do_not_unlock_if_synchronized(r15_thread, | |
942 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
943 __ movbool(do_not_unlock_if_synchronized, true); | |
944 | |
945 // increment invocation count & check for overflow | |
946 Label invocation_counter_overflow; | |
947 if (inc_counter) { | |
948 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
949 } | |
950 | |
951 Label continue_after_compile; | |
952 __ bind(continue_after_compile); | |
953 | |
954 bang_stack_shadow_pages(true); | |
955 | |
956 // reset the _do_not_unlock_if_synchronized flag | |
957 __ movbool(do_not_unlock_if_synchronized, false); | |
958 | |
959 // check for synchronized methods | |
960 // Must happen AFTER invocation_counter check and stack overflow check, | |
961 // so method is not locked if overflows. | |
962 if (synchronized) { | |
963 lock_method(); | |
964 } else { | |
965 // no synchronization necessary | |
966 #ifdef ASSERT | |
967 { | |
968 Label L; | |
969 __ movl(rax, access_flags); | |
970 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
971 __ jcc(Assembler::zero, L); | |
972 __ stop("method needs synchronization"); | |
973 __ bind(L); | |
974 } | |
975 #endif | |
976 } | |
977 | |
978 // start execution | |
979 #ifdef ASSERT | |
980 { | |
981 Label L; | |
982 const Address monitor_block_top(rbp, | |
983 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 984 __ movptr(rax, monitor_block_top); |
985 __ cmpptr(rax, rsp); | |
0 | 986 __ jcc(Assembler::equal, L); |
987 __ stop("broken stack frame setup in interpreter"); | |
988 __ bind(L); | |
989 } | |
990 #endif | |
991 | |
992 // jvmti support | |
993 __ notify_method_entry(); | |
994 | |
995 // work registers | |
996 const Register method = rbx; | |
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997 const Register t = r11; |
0 | 998 |
999 // allocate space for parameters | |
1000 __ get_method(method); | |
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1001 __ load_unsigned_short(t, |
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1002 Address(method, |
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1003 Method::size_of_parameters_offset())); |
1506 | 1004 __ shll(t, Interpreter::logStackElementSize); |
0 | 1005 |
304 | 1006 __ subptr(rsp, t); |
1007 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows | |
605 | 1008 __ andptr(rsp, -16); // must be 16 byte boundary (see amd64 ABI) |
0 | 1009 |
1010 // get signature handler | |
1011 { | |
1012 Label L; | |
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1013 __ movptr(t, Address(method, Method::signature_handler_offset())); |
304 | 1014 __ testptr(t, t); |
0 | 1015 __ jcc(Assembler::notZero, L); |
1016 __ call_VM(noreg, | |
1017 CAST_FROM_FN_PTR(address, | |
1018 InterpreterRuntime::prepare_native_call), | |
1019 method); | |
1020 __ get_method(method); | |
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1021 __ movptr(t, Address(method, Method::signature_handler_offset())); |
0 | 1022 __ bind(L); |
1023 } | |
1024 | |
1025 // call signature handler | |
1026 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == r14, | |
1027 "adjust this code"); | |
1028 assert(InterpreterRuntime::SignatureHandlerGenerator::to() == rsp, | |
1029 "adjust this code"); | |
1030 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == rscratch1, | |
1031 "adjust this code"); | |
1032 | |
1033 // The generated handlers do not touch RBX (the method oop). | |
1034 // However, large signatures cannot be cached and are generated | |
1035 // each time here. The slow-path generator can do a GC on return, | |
1036 // so we must reload it after the call. | |
1037 __ call(t); | |
1038 __ get_method(method); // slow path can do a GC, reload RBX | |
1039 | |
1040 | |
1041 // result handler is in rax | |
1042 // set result handler | |
304 | 1043 __ movptr(Address(rbp, |
1044 (frame::interpreter_frame_result_handler_offset) * wordSize), | |
1045 rax); | |
0 | 1046 |
1047 // pass mirror handle if static call | |
1048 { | |
1049 Label L; | |
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1050 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
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1051 __ movl(t, Address(method, Method::access_flags_offset())); |
0 | 1052 __ testl(t, JVM_ACC_STATIC); |
1053 __ jcc(Assembler::zero, L); | |
1054 // get mirror | |
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1055 __ movptr(t, Address(method, Method::const_offset())); |
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1056 __ movptr(t, Address(t, ConstMethod::constants_offset())); |
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1057 __ movptr(t, Address(t, ConstantPool::pool_holder_offset_in_bytes())); |
304 | 1058 __ movptr(t, Address(t, mirror_offset)); |
0 | 1059 // copy mirror into activation frame |
304 | 1060 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), |
0 | 1061 t); |
1062 // pass handle to mirror | |
304 | 1063 __ lea(c_rarg1, |
1064 Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); | |
0 | 1065 __ bind(L); |
1066 } | |
1067 | |
1068 // get native function entry point | |
1069 { | |
1070 Label L; | |
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1071 __ movptr(rax, Address(method, Method::native_function_offset())); |
0 | 1072 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
1073 __ movptr(rscratch2, unsatisfied.addr()); | |
304 | 1074 __ cmpptr(rax, rscratch2); |
0 | 1075 __ jcc(Assembler::notEqual, L); |
1076 __ call_VM(noreg, | |
1077 CAST_FROM_FN_PTR(address, | |
1078 InterpreterRuntime::prepare_native_call), | |
1079 method); | |
1080 __ get_method(method); | |
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1081 __ movptr(rax, Address(method, Method::native_function_offset())); |
0 | 1082 __ bind(L); |
1083 } | |
1084 | |
1085 // pass JNIEnv | |
304 | 1086 __ lea(c_rarg0, Address(r15_thread, JavaThread::jni_environment_offset())); |
0 | 1087 |
1088 // It is enough that the pc() points into the right code | |
1089 // segment. It does not have to be the correct return pc. | |
1090 __ set_last_Java_frame(rsp, rbp, (address) __ pc()); | |
1091 | |
1092 // change thread state | |
1093 #ifdef ASSERT | |
1094 { | |
1095 Label L; | |
1096 __ movl(t, Address(r15_thread, JavaThread::thread_state_offset())); | |
1097 __ cmpl(t, _thread_in_Java); | |
1098 __ jcc(Assembler::equal, L); | |
1099 __ stop("Wrong thread state in native stub"); | |
1100 __ bind(L); | |
1101 } | |
1102 #endif | |
1103 | |
1104 // Change state to native | |
1105 | |
1106 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
1107 _thread_in_native); | |
1108 | |
1109 // Call the native method. | |
1110 __ call(rax); | |
1111 // result potentially in rax or xmm0 | |
1112 | |
1113 // Depending on runtime options, either restore the MXCSR | |
1114 // register after returning from the JNI Call or verify that | |
1115 // it wasn't changed during -Xcheck:jni. | |
1116 if (RestoreMXCSROnJNICalls) { | |
304 | 1117 __ ldmxcsr(ExternalAddress(StubRoutines::x86::mxcsr_std())); |
0 | 1118 } |
1119 else if (CheckJNICalls) { | |
304 | 1120 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, StubRoutines::x86::verify_mxcsr_entry()))); |
0 | 1121 } |
1122 | |
1123 // NOTE: The order of these pushes is known to frame::interpreter_frame_result | |
1124 // in order to extract the result of a method call. If the order of these | |
1125 // pushes change or anything else is added to the stack then the code in | |
1126 // interpreter_frame_result must also change. | |
1127 | |
1128 __ push(dtos); | |
1129 __ push(ltos); | |
1130 | |
1131 // change thread state | |
1132 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
1133 _thread_in_native_trans); | |
1134 | |
1135 if (os::is_MP()) { | |
1136 if (UseMembar) { | |
1137 // Force this write out before the read below | |
1138 __ membar(Assembler::Membar_mask_bits( | |
1139 Assembler::LoadLoad | Assembler::LoadStore | | |
1140 Assembler::StoreLoad | Assembler::StoreStore)); | |
1141 } else { | |
1142 // Write serialization page so VM thread can do a pseudo remote membar. | |
1143 // We use the current thread pointer to calculate a thread specific | |
1144 // offset to write to within the page. This minimizes bus traffic | |
1145 // due to cache line collision. | |
1146 __ serialize_memory(r15_thread, rscratch2); | |
1147 } | |
1148 } | |
1149 | |
1150 // check for safepoint operation in progress and/or pending suspend requests | |
1151 { | |
1152 Label Continue; | |
1153 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
1154 SafepointSynchronize::_not_synchronized); | |
1155 | |
1156 Label L; | |
1157 __ jcc(Assembler::notEqual, L); | |
1158 __ cmpl(Address(r15_thread, JavaThread::suspend_flags_offset()), 0); | |
1159 __ jcc(Assembler::equal, Continue); | |
1160 __ bind(L); | |
1161 | |
1162 // Don't use call_VM as it will see a possible pending exception | |
1163 // and forward it and never return here preventing us from | |
1164 // clearing _last_native_pc down below. Also can't use | |
1165 // call_VM_leaf either as it will check to see if r13 & r14 are | |
1166 // preserved and correspond to the bcp/locals pointers. So we do a | |
1167 // runtime call by hand. | |
1168 // | |
304 | 1169 __ mov(c_rarg0, r15_thread); |
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1170 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1171 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
1172 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1173 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans))); |
304 | 1174 __ mov(rsp, r12); // restore sp |
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1175 __ reinit_heapbase(); |
0 | 1176 __ bind(Continue); |
1177 } | |
1178 | |
1179 // change thread state | |
1180 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
1181 | |
1182 // reset_last_Java_frame | |
1183 __ reset_last_Java_frame(true, true); | |
1184 | |
1185 // reset handle block | |
304 | 1186 __ movptr(t, Address(r15_thread, JavaThread::active_handles_offset())); |
1187 __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD); | |
0 | 1188 |
1189 // If result is an oop unbox and store it in frame where gc will see it | |
1190 // and result handler will pick it up | |
1191 | |
1192 { | |
1193 Label no_oop, store_result; | |
1194 __ lea(t, ExternalAddress(AbstractInterpreter::result_handler(T_OBJECT))); | |
304 | 1195 __ cmpptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
0 | 1196 __ jcc(Assembler::notEqual, no_oop); |
1197 // retrieve result | |
1198 __ pop(ltos); | |
304 | 1199 __ testptr(rax, rax); |
0 | 1200 __ jcc(Assembler::zero, store_result); |
304 | 1201 __ movptr(rax, Address(rax, 0)); |
0 | 1202 __ bind(store_result); |
304 | 1203 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize), rax); |
0 | 1204 // keep stack depth as expected by pushing oop which will eventually be discarde |
1205 __ push(ltos); | |
1206 __ bind(no_oop); | |
1207 } | |
1208 | |
1209 | |
1210 { | |
1211 Label no_reguard; | |
1212 __ cmpl(Address(r15_thread, JavaThread::stack_guard_state_offset()), | |
1213 JavaThread::stack_guard_yellow_disabled); | |
1214 __ jcc(Assembler::notEqual, no_reguard); | |
1215 | |
304 | 1216 __ pusha(); // XXX only save smashed registers |
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1217 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1218 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
1219 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1220 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
304 | 1221 __ mov(rsp, r12); // restore sp |
1222 __ popa(); // XXX only restore smashed registers | |
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1223 __ reinit_heapbase(); |
0 | 1224 |
1225 __ bind(no_reguard); | |
1226 } | |
1227 | |
1228 | |
1229 // The method register is junk from after the thread_in_native transition | |
1230 // until here. Also can't call_VM until the bcp has been | |
1231 // restored. Need bcp for throwing exception below so get it now. | |
1232 __ get_method(method); | |
1233 | |
1234 // restore r13 to have legal interpreter frame, i.e., bci == 0 <=> | |
1235 // r13 == code_base() | |
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1236 __ movptr(r13, Address(method, Method::const_offset())); // get ConstMethod* |
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1237 __ lea(r13, Address(r13, ConstMethod::codes_offset())); // get codebase |
0 | 1238 // handle exceptions (exception handling will handle unlocking!) |
1239 { | |
1240 Label L; | |
304 | 1241 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
0 | 1242 __ jcc(Assembler::zero, L); |
1243 // Note: At some point we may want to unify this with the code | |
1244 // used in call_VM_base(); i.e., we should use the | |
1245 // StubRoutines::forward_exception code. For now this doesn't work | |
1246 // here because the rsp is not correctly set at this point. | |
1247 __ MacroAssembler::call_VM(noreg, | |
1248 CAST_FROM_FN_PTR(address, | |
1249 InterpreterRuntime::throw_pending_exception)); | |
1250 __ should_not_reach_here(); | |
1251 __ bind(L); | |
1252 } | |
1253 | |
1254 // do unlocking if necessary | |
1255 { | |
1256 Label L; | |
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1257 __ movl(t, Address(method, Method::access_flags_offset())); |
0 | 1258 __ testl(t, JVM_ACC_SYNCHRONIZED); |
1259 __ jcc(Assembler::zero, L); | |
1260 // the code below should be shared with interpreter macro | |
1261 // assembler implementation | |
1262 { | |
1263 Label unlock; | |
1264 // BasicObjectLock will be first in list, since this is a | |
1265 // synchronized method. However, need to check that the object | |
1266 // has not been unlocked by an explicit monitorexit bytecode. | |
1267 const Address monitor(rbp, | |
1268 (intptr_t)(frame::interpreter_frame_initial_sp_offset * | |
1269 wordSize - sizeof(BasicObjectLock))); | |
1270 | |
1271 // monitor expect in c_rarg1 for slow unlock path | |
304 | 1272 __ lea(c_rarg1, monitor); // address of first monitor |
0 | 1273 |
304 | 1274 __ movptr(t, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
1275 __ testptr(t, t); | |
0 | 1276 __ jcc(Assembler::notZero, unlock); |
1277 | |
1278 // Entry already unlocked, need to throw exception | |
1279 __ MacroAssembler::call_VM(noreg, | |
1280 CAST_FROM_FN_PTR(address, | |
1281 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
1282 __ should_not_reach_here(); | |
1283 | |
1284 __ bind(unlock); | |
1285 __ unlock_object(c_rarg1); | |
1286 } | |
1287 __ bind(L); | |
1288 } | |
1289 | |
1290 // jvmti support | |
1291 // Note: This must happen _after_ handling/throwing any exceptions since | |
1292 // the exception handler code notifies the runtime of method exits | |
1293 // too. If this happens before, method entry/exit notifications are | |
1294 // not properly paired (was bug - gri 11/22/99). | |
1295 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
1296 | |
1297 // restore potential result in edx:eax, call result handler to | |
1298 // restore potential result in ST0 & handle result | |
1299 | |
1300 __ pop(ltos); | |
1301 __ pop(dtos); | |
1302 | |
304 | 1303 __ movptr(t, Address(rbp, |
1304 (frame::interpreter_frame_result_handler_offset) * wordSize)); | |
0 | 1305 __ call(t); |
1306 | |
1307 // remove activation | |
304 | 1308 __ movptr(t, Address(rbp, |
1309 frame::interpreter_frame_sender_sp_offset * | |
1310 wordSize)); // get sender sp | |
0 | 1311 __ leave(); // remove frame anchor |
304 | 1312 __ pop(rdi); // get return address |
1313 __ mov(rsp, t); // set sp to sender sp | |
0 | 1314 __ jmp(rdi); |
1315 | |
1316 if (inc_counter) { | |
1317 // Handle overflow of counter and compile method | |
1318 __ bind(invocation_counter_overflow); | |
1319 generate_counter_overflow(&continue_after_compile); | |
1320 } | |
1321 | |
1322 return entry_point; | |
1323 } | |
1324 | |
1325 // | |
1326 // Generic interpreted method entry to (asm) interpreter | |
1327 // | |
1328 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
1329 // determine code generation flags | |
1330 bool inc_counter = UseCompiler || CountCompiledCalls; | |
1331 | |
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1332 // ebx: Method* |
0 | 1333 // r13: sender sp |
1334 address entry_point = __ pc(); | |
1335 | |
1336 const Address size_of_parameters(rbx, | |
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1337 Method::size_of_parameters_offset()); |
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1338 const Address size_of_locals(rbx, Method::size_of_locals_offset()); |
0 | 1339 const Address invocation_counter(rbx, |
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1340 Method::invocation_counter_offset() + |
0 | 1341 InvocationCounter::counter_offset()); |
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1342 const Address access_flags(rbx, Method::access_flags_offset()); |
0 | 1343 |
1344 // get parameter size (always needed) | |
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1345 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 1346 |
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1347 // rbx: Method* |
0 | 1348 // rcx: size of parameters |
1349 // r13: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
1350 | |
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1351 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
0 | 1352 __ subl(rdx, rcx); // rdx = no. of additional locals |
1353 | |
1354 // YYY | |
1355 // __ incrementl(rdx); | |
1356 // __ andl(rdx, -2); | |
1357 | |
1358 // see if we've got enough room on the stack for locals plus overhead. | |
1359 generate_stack_overflow_check(); | |
1360 | |
1361 // get return address | |
304 | 1362 __ pop(rax); |
0 | 1363 |
1364 // compute beginning of parameters (r14) | |
304 | 1365 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
0 | 1366 |
1367 // rdx - # of additional locals | |
1368 // allocate space for locals | |
1369 // explicitly initialize locals | |
1370 { | |
1371 Label exit, loop; | |
1372 __ testl(rdx, rdx); | |
1373 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 | |
1374 __ bind(loop); | |
304 | 1375 __ push((int) NULL_WORD); // initialize local variables |
0 | 1376 __ decrementl(rdx); // until everything initialized |
1377 __ jcc(Assembler::greater, loop); | |
1378 __ bind(exit); | |
1379 } | |
1380 | |
1381 // (pre-)fetch invocation count | |
1382 if (inc_counter) { | |
1383 __ movl(rcx, invocation_counter); | |
1384 } | |
1385 // initialize fixed part of activation frame | |
1386 generate_fixed_frame(false); | |
1387 | |
1388 // make sure method is not native & not abstract | |
1389 #ifdef ASSERT | |
1390 __ movl(rax, access_flags); | |
1391 { | |
1392 Label L; | |
1393 __ testl(rax, JVM_ACC_NATIVE); | |
1394 __ jcc(Assembler::zero, L); | |
1395 __ stop("tried to execute native method as non-native"); | |
1396 __ bind(L); | |
1397 } | |
1398 { | |
1399 Label L; | |
1400 __ testl(rax, JVM_ACC_ABSTRACT); | |
1401 __ jcc(Assembler::zero, L); | |
1402 __ stop("tried to execute abstract method in interpreter"); | |
1403 __ bind(L); | |
1404 } | |
1405 #endif | |
1406 | |
1407 // Since at this point in the method invocation the exception | |
1408 // handler would try to exit the monitor of synchronized methods | |
1409 // which hasn't been entered yet, we set the thread local variable | |
1410 // _do_not_unlock_if_synchronized to true. The remove_activation | |
1411 // will check this flag. | |
1412 | |
1413 const Address do_not_unlock_if_synchronized(r15_thread, | |
1414 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
1415 __ movbool(do_not_unlock_if_synchronized, true); | |
1416 | |
1417 // increment invocation count & check for overflow | |
1418 Label invocation_counter_overflow; | |
1419 Label profile_method; | |
1420 Label profile_method_continue; | |
1421 if (inc_counter) { | |
1422 generate_counter_incr(&invocation_counter_overflow, | |
1423 &profile_method, | |
1424 &profile_method_continue); | |
1425 if (ProfileInterpreter) { | |
1426 __ bind(profile_method_continue); | |
1427 } | |
1428 } | |
1429 | |
1430 Label continue_after_compile; | |
1431 __ bind(continue_after_compile); | |
1432 | |
1433 // check for synchronized interpreted methods | |
1434 bang_stack_shadow_pages(false); | |
1435 | |
1436 // reset the _do_not_unlock_if_synchronized flag | |
1437 __ movbool(do_not_unlock_if_synchronized, false); | |
1438 | |
1439 // check for synchronized methods | |
1440 // Must happen AFTER invocation_counter check and stack overflow check, | |
1441 // so method is not locked if overflows. | |
1442 if (synchronized) { | |
1443 // Allocate monitor and lock method | |
1444 lock_method(); | |
1445 } else { | |
1446 // no synchronization necessary | |
1447 #ifdef ASSERT | |
1448 { | |
1449 Label L; | |
1450 __ movl(rax, access_flags); | |
1451 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
1452 __ jcc(Assembler::zero, L); | |
1453 __ stop("method needs synchronization"); | |
1454 __ bind(L); | |
1455 } | |
1456 #endif | |
1457 } | |
1458 | |
1459 // start execution | |
1460 #ifdef ASSERT | |
1461 { | |
1462 Label L; | |
1463 const Address monitor_block_top (rbp, | |
1464 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 1465 __ movptr(rax, monitor_block_top); |
1466 __ cmpptr(rax, rsp); | |
0 | 1467 __ jcc(Assembler::equal, L); |
1468 __ stop("broken stack frame setup in interpreter"); | |
1469 __ bind(L); | |
1470 } | |
1471 #endif | |
1472 | |
1473 // jvmti support | |
1474 __ notify_method_entry(); | |
1475 | |
1476 __ dispatch_next(vtos); | |
1477 | |
1478 // invocation counter overflow | |
1479 if (inc_counter) { | |
1480 if (ProfileInterpreter) { | |
1481 // We have decided to profile this method in the interpreter | |
1482 __ bind(profile_method); | |
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1483 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
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1484 __ set_method_data_pointer_for_bcp(); |
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1485 __ get_method(rbx); |
0 | 1486 __ jmp(profile_method_continue); |
1487 } | |
1488 // Handle overflow of counter and compile method | |
1489 __ bind(invocation_counter_overflow); | |
1490 generate_counter_overflow(&continue_after_compile); | |
1491 } | |
1492 | |
1493 return entry_point; | |
1494 } | |
1495 | |
1496 // Entry points | |
1497 // | |
1498 // Here we generate the various kind of entries into the interpreter. | |
1499 // The two main entry type are generic bytecode methods and native | |
1500 // call method. These both come in synchronized and non-synchronized | |
1501 // versions but the frame layout they create is very similar. The | |
1502 // other method entry types are really just special purpose entries | |
1503 // that are really entry and interpretation all in one. These are for | |
1504 // trivial methods like accessor, empty, or special math methods. | |
1505 // | |
1506 // When control flow reaches any of the entry types for the interpreter | |
1507 // the following holds -> | |
1508 // | |
1509 // Arguments: | |
1510 // | |
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1511 // rbx: Method* |
0 | 1512 // |
1513 // Stack layout immediately at entry | |
1514 // | |
1515 // [ return address ] <--- rsp | |
1516 // [ parameter n ] | |
1517 // ... | |
1518 // [ parameter 1 ] | |
1519 // [ expression stack ] (caller's java expression stack) | |
1520 | |
1521 // Assuming that we don't go to one of the trivial specialized entries | |
1522 // the stack will look like below when we are ready to execute the | |
1523 // first bytecode (or call the native routine). The register usage | |
1524 // will be as the template based interpreter expects (see | |
1525 // interpreter_amd64.hpp). | |
1526 // | |
1527 // local variables follow incoming parameters immediately; i.e. | |
1528 // the return address is moved to the end of the locals). | |
1529 // | |
1530 // [ monitor entry ] <--- rsp | |
1531 // ... | |
1532 // [ monitor entry ] | |
1533 // [ expr. stack bottom ] | |
1534 // [ saved r13 ] | |
1535 // [ current r14 ] | |
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1536 // [ Method* ] |
0 | 1537 // [ saved ebp ] <--- rbp |
1538 // [ return address ] | |
1539 // [ local variable m ] | |
1540 // ... | |
1541 // [ local variable 1 ] | |
1542 // [ parameter n ] | |
1543 // ... | |
1544 // [ parameter 1 ] <--- r14 | |
1545 | |
1546 address AbstractInterpreterGenerator::generate_method_entry( | |
1547 AbstractInterpreter::MethodKind kind) { | |
1548 // determine code generation flags | |
1549 bool synchronized = false; | |
1550 address entry_point = NULL; | |
1551 | |
1552 switch (kind) { | |
1553 case Interpreter::zerolocals : break; | |
1554 case Interpreter::zerolocals_synchronized: synchronized = true; break; | |
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1555 case Interpreter::native : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(false); break; |
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1556 case Interpreter::native_synchronized : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(true); break; |
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1557 case Interpreter::empty : entry_point = ((InterpreterGenerator*)this)->generate_empty_entry(); break; |
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1558 case Interpreter::accessor : entry_point = ((InterpreterGenerator*)this)->generate_accessor_entry(); break; |
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1559 case Interpreter::abstract : entry_point = ((InterpreterGenerator*)this)->generate_abstract_entry(); break; |
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1560 |
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1561 case Interpreter::java_lang_math_sin : // fall thru |
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1562 case Interpreter::java_lang_math_cos : // fall thru |
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1563 case Interpreter::java_lang_math_tan : // fall thru |
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1564 case Interpreter::java_lang_math_abs : // fall thru |
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1565 case Interpreter::java_lang_math_log : // fall thru |
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1566 case Interpreter::java_lang_math_log10 : // fall thru |
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1567 case Interpreter::java_lang_math_sqrt : // fall thru |
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1568 case Interpreter::java_lang_math_pow : // fall thru |
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1569 case Interpreter::java_lang_math_exp : entry_point = ((InterpreterGenerator*)this)->generate_math_entry(kind); break; |
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1570 case Interpreter::java_lang_ref_reference_get |
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1571 : entry_point = ((InterpreterGenerator*)this)->generate_Reference_get_entry(); break; |
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1572 default: |
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1573 fatal(err_msg("unexpected method kind: %d", kind)); |
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1574 break; |
0 | 1575 } |
1576 | |
1577 if (entry_point) { | |
1578 return entry_point; | |
1579 } | |
1580 | |
1581 return ((InterpreterGenerator*) this)-> | |
1582 generate_normal_entry(synchronized); | |
1583 } | |
1584 | |
1174
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1585 // These should never be compiled since the interpreter will prefer |
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1586 // the compiled version to the intrinsic version. |
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1587 bool AbstractInterpreter::can_be_compiled(methodHandle m) { |
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1588 switch (method_kind(m)) { |
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1589 case Interpreter::java_lang_math_sin : // fall thru |
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1590 case Interpreter::java_lang_math_cos : // fall thru |
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1591 case Interpreter::java_lang_math_tan : // fall thru |
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1592 case Interpreter::java_lang_math_abs : // fall thru |
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1593 case Interpreter::java_lang_math_log : // fall thru |
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1594 case Interpreter::java_lang_math_log10 : // fall thru |
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1595 case Interpreter::java_lang_math_sqrt : // fall thru |
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1596 case Interpreter::java_lang_math_pow : // fall thru |
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1597 case Interpreter::java_lang_math_exp : |
1174
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1598 return false; |
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1599 default: |
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1600 return true; |
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1601 } |
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1602 } |
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1603 |
0 | 1604 // How much stack a method activation needs in words. |
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1605 int AbstractInterpreter::size_top_interpreter_activation(Method* method) { |
0 | 1606 const int entry_size = frame::interpreter_frame_monitor_size(); |
1607 | |
1608 // total overhead size: entry_size + (saved rbp thru expr stack | |
1609 // bottom). be sure to change this if you add/subtract anything | |
1610 // to/from the overhead area | |
1611 const int overhead_size = | |
1612 -(frame::interpreter_frame_initial_sp_offset) + entry_size; | |
1613 | |
1614 const int stub_code = frame::entry_frame_after_call_words; | |
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1615 const int extra_stack = Method::extra_stack_entries(); |
710 | 1616 const int method_stack = (method->max_locals() + method->max_stack() + extra_stack) * |
1506 | 1617 Interpreter::stackElementWords; |
0 | 1618 return (overhead_size + method_stack + stub_code); |
1619 } | |
1620 | |
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1621 int AbstractInterpreter::layout_activation(Method* method, |
0 | 1622 int tempcount, |
1623 int popframe_extra_args, | |
1624 int moncount, | |
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1625 int caller_actual_parameters, |
0 | 1626 int callee_param_count, |
1627 int callee_locals, | |
1628 frame* caller, | |
1629 frame* interpreter_frame, | |
1630 bool is_top_frame) { | |
1631 // Note: This calculation must exactly parallel the frame setup | |
1632 // in AbstractInterpreterGenerator::generate_method_entry. | |
1633 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
1634 // The frame interpreter_frame, if not NULL, is guaranteed to be the | |
1635 // right size, as determined by a previous call to this method. | |
1636 // It is also guaranteed to be walkable even though it is in a skeletal state | |
1637 | |
1638 // fixed size of an interpreter frame: | |
1506 | 1639 int max_locals = method->max_locals() * Interpreter::stackElementWords; |
0 | 1640 int extra_locals = (method->max_locals() - method->size_of_parameters()) * |
1506 | 1641 Interpreter::stackElementWords; |
0 | 1642 |
1643 int overhead = frame::sender_sp_offset - | |
1644 frame::interpreter_frame_initial_sp_offset; | |
1645 // Our locals were accounted for by the caller (or last_frame_adjust | |
1646 // on the transistion) Since the callee parameters already account | |
1647 // for the callee's params we only need to account for the extra | |
1648 // locals. | |
1649 int size = overhead + | |
1506 | 1650 (callee_locals - callee_param_count)*Interpreter::stackElementWords + |
0 | 1651 moncount * frame::interpreter_frame_monitor_size() + |
1506 | 1652 tempcount* Interpreter::stackElementWords + popframe_extra_args; |
0 | 1653 if (interpreter_frame != NULL) { |
1654 #ifdef ASSERT | |
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1655 if (!EnableInvokeDynamic) |
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1656 // @@@ FIXME: Should we correct interpreter_frame_sender_sp in the calling sequences? |
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1657 // Probably, since deoptimization doesn't work yet. |
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1658 assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable"); |
0 | 1659 assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)"); |
1660 #endif | |
1661 | |
1662 interpreter_frame->interpreter_frame_set_method(method); | |
1663 // NOTE the difference in using sender_sp and | |
1664 // interpreter_frame_sender_sp interpreter_frame_sender_sp is | |
1665 // the original sp of the caller (the unextended_sp) and | |
1666 // sender_sp is fp+16 XXX | |
1667 intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; | |
1668 | |
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1669 #ifdef ASSERT |
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1670 if (caller->is_interpreted_frame()) { |
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1671 assert(locals < caller->fp() + frame::interpreter_frame_initial_sp_offset, "bad placement"); |
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1672 } |
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1673 #endif |
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1674 |
0 | 1675 interpreter_frame->interpreter_frame_set_locals(locals); |
1676 BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); | |
1677 BasicObjectLock* monbot = montop - moncount; | |
1678 interpreter_frame->interpreter_frame_set_monitor_end(monbot); | |
1679 | |
1680 // Set last_sp | |
1681 intptr_t* esp = (intptr_t*) monbot - | |
1506 | 1682 tempcount*Interpreter::stackElementWords - |
0 | 1683 popframe_extra_args; |
1684 interpreter_frame->interpreter_frame_set_last_sp(esp); | |
1685 | |
1686 // All frames but the initial (oldest) interpreter frame we fill in have | |
1687 // a value for sender_sp that allows walking the stack but isn't | |
1688 // truly correct. Correct the value here. | |
1689 if (extra_locals != 0 && | |
1690 interpreter_frame->sender_sp() == | |
1691 interpreter_frame->interpreter_frame_sender_sp()) { | |
1692 interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + | |
1693 extra_locals); | |
1694 } | |
1695 *interpreter_frame->interpreter_frame_cache_addr() = | |
1696 method->constants()->cache(); | |
1697 } | |
1698 return size; | |
1699 } | |
1700 | |
1701 //----------------------------------------------------------------------------- | |
1702 // Exceptions | |
1703 | |
1704 void TemplateInterpreterGenerator::generate_throw_exception() { | |
1705 // Entry point in previous activation (i.e., if the caller was | |
1706 // interpreted) | |
1707 Interpreter::_rethrow_exception_entry = __ pc(); | |
1708 // Restore sp to interpreter_frame_last_sp even though we are going | |
1709 // to empty the expression stack for the exception processing. | |
304 | 1710 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 1711 // rax: exception |
1712 // rdx: return address/pc that threw exception | |
1713 __ restore_bcp(); // r13 points to call/send | |
1714 __ restore_locals(); | |
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1715 __ reinit_heapbase(); // restore r12 as heapbase. |
0 | 1716 // Entry point for exceptions thrown within interpreter code |
1717 Interpreter::_throw_exception_entry = __ pc(); | |
1718 // expression stack is undefined here | |
1719 // rax: exception | |
1720 // r13: exception bcp | |
1721 __ verify_oop(rax); | |
304 | 1722 __ mov(c_rarg1, rax); |
0 | 1723 |
1724 // expression stack must be empty before entering the VM in case of | |
1725 // an exception | |
1726 __ empty_expression_stack(); | |
1727 // find exception handler address and preserve exception oop | |
1728 __ call_VM(rdx, | |
1729 CAST_FROM_FN_PTR(address, | |
1730 InterpreterRuntime::exception_handler_for_exception), | |
1731 c_rarg1); | |
1732 // rax: exception handler entry point | |
1733 // rdx: preserved exception oop | |
1734 // r13: bcp for exception handler | |
1735 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
1736 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
1737 | |
1738 // If the exception is not handled in the current frame the frame is | |
1739 // removed and the exception is rethrown (i.e. exception | |
1740 // continuation is _rethrow_exception). | |
1741 // | |
1742 // Note: At this point the bci is still the bxi for the instruction | |
1743 // which caused the exception and the expression stack is | |
1744 // empty. Thus, for any VM calls at this point, GC will find a legal | |
1745 // oop map (with empty expression stack). | |
1746 | |
1747 // In current activation | |
1748 // tos: exception | |
1749 // esi: exception bcp | |
1750 | |
1751 // | |
1752 // JVMTI PopFrame support | |
1753 // | |
1754 | |
1755 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
1756 __ empty_expression_stack(); | |
1757 // Set the popframe_processing bit in pending_popframe_condition | |
1758 // indicating that we are currently handling popframe, so that | |
1759 // call_VMs that may happen later do not trigger new popframe | |
1760 // handling cycles. | |
1761 __ movl(rdx, Address(r15_thread, JavaThread::popframe_condition_offset())); | |
1762 __ orl(rdx, JavaThread::popframe_processing_bit); | |
1763 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), rdx); | |
1764 | |
1765 { | |
1766 // Check to see whether we are returning to a deoptimized frame. | |
1767 // (The PopFrame call ensures that the caller of the popped frame is | |
1768 // either interpreted or compiled and deoptimizes it if compiled.) | |
1769 // In this case, we can't call dispatch_next() after the frame is | |
1770 // popped, but instead must save the incoming arguments and restore | |
1771 // them after deoptimization has occurred. | |
1772 // | |
1773 // Note that we don't compare the return PC against the | |
1774 // deoptimization blob's unpack entry because of the presence of | |
1775 // adapter frames in C2. | |
1776 Label caller_not_deoptimized; | |
304 | 1777 __ movptr(c_rarg1, Address(rbp, frame::return_addr_offset * wordSize)); |
0 | 1778 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
1779 InterpreterRuntime::interpreter_contains), c_rarg1); | |
1780 __ testl(rax, rax); | |
1781 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
1782 | |
1783 // Compute size of arguments for saving when returning to | |
1784 // deoptimized caller | |
1785 __ get_method(rax); | |
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1786 __ load_unsigned_short(rax, Address(rax, in_bytes(Method:: |
0 | 1787 size_of_parameters_offset()))); |
1506 | 1788 __ shll(rax, Interpreter::logStackElementSize); |
0 | 1789 __ restore_locals(); // XXX do we need this? |
304 | 1790 __ subptr(r14, rax); |
1791 __ addptr(r14, wordSize); | |
0 | 1792 // Save these arguments |
1793 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, | |
1794 Deoptimization:: | |
1795 popframe_preserve_args), | |
1796 r15_thread, rax, r14); | |
1797 | |
1798 __ remove_activation(vtos, rdx, | |
1799 /* throw_monitor_exception */ false, | |
1800 /* install_monitor_exception */ false, | |
1801 /* notify_jvmdi */ false); | |
1802 | |
1803 // Inform deoptimization that it is responsible for restoring | |
1804 // these arguments | |
1805 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
1806 JavaThread::popframe_force_deopt_reexecution_bit); | |
1807 | |
1808 // Continue in deoptimization handler | |
1809 __ jmp(rdx); | |
1810 | |
1811 __ bind(caller_not_deoptimized); | |
1812 } | |
1813 | |
1814 __ remove_activation(vtos, rdx, /* rdx result (retaddr) is not used */ | |
1815 /* throw_monitor_exception */ false, | |
1816 /* install_monitor_exception */ false, | |
1817 /* notify_jvmdi */ false); | |
1818 | |
1819 // Finish with popframe handling | |
1820 // A previous I2C followed by a deoptimization might have moved the | |
1821 // outgoing arguments further up the stack. PopFrame expects the | |
1822 // mutations to those outgoing arguments to be preserved and other | |
1823 // constraints basically require this frame to look exactly as | |
1824 // though it had previously invoked an interpreted activation with | |
1825 // no space between the top of the expression stack (current | |
1826 // last_sp) and the top of stack. Rather than force deopt to | |
1827 // maintain this kind of invariant all the time we call a small | |
1828 // fixup routine to move the mutated arguments onto the top of our | |
1829 // expression stack if necessary. | |
304 | 1830 __ mov(c_rarg1, rsp); |
1831 __ movptr(c_rarg2, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
0 | 1832 // PC must point into interpreter here |
1833 __ set_last_Java_frame(noreg, rbp, __ pc()); | |
1834 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), r15_thread, c_rarg1, c_rarg2); | |
1835 __ reset_last_Java_frame(true, true); | |
1836 // Restore the last_sp and null it out | |
304 | 1837 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
1838 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); | |
0 | 1839 |
1840 __ restore_bcp(); // XXX do we need this? | |
1841 __ restore_locals(); // XXX do we need this? | |
1842 // The method data pointer was incremented already during | |
1843 // call profiling. We have to restore the mdp for the current bcp. | |
1844 if (ProfileInterpreter) { | |
1845 __ set_method_data_pointer_for_bcp(); | |
1846 } | |
1847 | |
1848 // Clear the popframe condition flag | |
1849 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
1850 JavaThread::popframe_inactive); | |
1851 | |
1852 __ dispatch_next(vtos); | |
1853 // end of PopFrame support | |
1854 | |
1855 Interpreter::_remove_activation_entry = __ pc(); | |
1856 | |
1857 // preserve exception over this code sequence | |
1858 __ pop_ptr(rax); | |
304 | 1859 __ movptr(Address(r15_thread, JavaThread::vm_result_offset()), rax); |
0 | 1860 // remove the activation (without doing throws on illegalMonitorExceptions) |
1861 __ remove_activation(vtos, rdx, false, true, false); | |
1862 // restore exception | |
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1863 __ get_vm_result(rax, r15_thread); |
0 | 1864 |
1865 // In between activations - previous activation type unknown yet | |
1866 // compute continuation point - the continuation point expects the | |
1867 // following registers set up: | |
1868 // | |
1869 // rax: exception | |
1870 // rdx: return address/pc that threw exception | |
1871 // rsp: expression stack of caller | |
1872 // rbp: ebp of caller | |
304 | 1873 __ push(rax); // save exception |
1874 __ push(rdx); // save return address | |
0 | 1875 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
1876 SharedRuntime::exception_handler_for_return_address), | |
1295 | 1877 r15_thread, rdx); |
304 | 1878 __ mov(rbx, rax); // save exception handler |
1879 __ pop(rdx); // restore return address | |
1880 __ pop(rax); // restore exception | |
0 | 1881 // Note that an "issuing PC" is actually the next PC after the call |
1882 __ jmp(rbx); // jump to exception | |
1883 // handler of caller | |
1884 } | |
1885 | |
1886 | |
1887 // | |
1888 // JVMTI ForceEarlyReturn support | |
1889 // | |
1890 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
1891 address entry = __ pc(); | |
1892 | |
1893 __ restore_bcp(); | |
1894 __ restore_locals(); | |
1895 __ empty_expression_stack(); | |
1896 __ load_earlyret_value(state); | |
1897 | |
304 | 1898 __ movptr(rdx, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
0 | 1899 Address cond_addr(rdx, JvmtiThreadState::earlyret_state_offset()); |
1900 | |
1901 // Clear the earlyret state | |
1902 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
1903 | |
1904 __ remove_activation(state, rsi, | |
1905 false, /* throw_monitor_exception */ | |
1906 false, /* install_monitor_exception */ | |
1907 true); /* notify_jvmdi */ | |
1908 __ jmp(rsi); | |
1909 | |
1910 return entry; | |
1911 } // end of ForceEarlyReturn support | |
1912 | |
1913 | |
1914 //----------------------------------------------------------------------------- | |
1915 // Helper for vtos entry point generation | |
1916 | |
1917 void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t, | |
1918 address& bep, | |
1919 address& cep, | |
1920 address& sep, | |
1921 address& aep, | |
1922 address& iep, | |
1923 address& lep, | |
1924 address& fep, | |
1925 address& dep, | |
1926 address& vep) { | |
1927 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
1928 Label L; | |
1929 aep = __ pc(); __ push_ptr(); __ jmp(L); | |
1930 fep = __ pc(); __ push_f(); __ jmp(L); | |
1931 dep = __ pc(); __ push_d(); __ jmp(L); | |
1932 lep = __ pc(); __ push_l(); __ jmp(L); | |
1933 bep = cep = sep = | |
1934 iep = __ pc(); __ push_i(); | |
1935 vep = __ pc(); | |
1936 __ bind(L); | |
1937 generate_and_dispatch(t); | |
1938 } | |
1939 | |
1940 | |
1941 //----------------------------------------------------------------------------- | |
1942 // Generation of individual instructions | |
1943 | |
1944 // helpers for generate_and_dispatch | |
1945 | |
1946 | |
1947 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
1948 : TemplateInterpreterGenerator(code) { | |
1949 generate_all(); // down here so it can be "virtual" | |
1950 } | |
1951 | |
1952 //----------------------------------------------------------------------------- | |
1953 | |
1954 // Non-product code | |
1955 #ifndef PRODUCT | |
1956 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
1957 address entry = __ pc(); | |
1958 | |
1959 __ push(state); | |
304 | 1960 __ push(c_rarg0); |
1961 __ push(c_rarg1); | |
1962 __ push(c_rarg2); | |
1963 __ push(c_rarg3); | |
1964 __ mov(c_rarg2, rax); // Pass itos | |
0 | 1965 #ifdef _WIN64 |
1966 __ movflt(xmm3, xmm0); // Pass ftos | |
1967 #endif | |
1968 __ call_VM(noreg, | |
1969 CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), | |
1970 c_rarg1, c_rarg2, c_rarg3); | |
304 | 1971 __ pop(c_rarg3); |
1972 __ pop(c_rarg2); | |
1973 __ pop(c_rarg1); | |
1974 __ pop(c_rarg0); | |
0 | 1975 __ pop(state); |
1976 __ ret(0); // return from result handler | |
1977 | |
1978 return entry; | |
1979 } | |
1980 | |
1981 void TemplateInterpreterGenerator::count_bytecode() { | |
1982 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); | |
1983 } | |
1984 | |
1985 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
1986 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); | |
1987 } | |
1988 | |
1989 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
1990 __ mov32(rbx, ExternalAddress((address) &BytecodePairHistogram::_index)); | |
1991 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
1992 __ orl(rbx, | |
1993 ((int) t->bytecode()) << | |
1994 BytecodePairHistogram::log2_number_of_codes); | |
1995 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
1996 __ lea(rscratch1, ExternalAddress((address) BytecodePairHistogram::_counters)); | |
1997 __ incrementl(Address(rscratch1, rbx, Address::times_4)); | |
1998 } | |
1999 | |
2000 | |
2001 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
2002 // Call a little run-time stub to avoid blow-up for each bytecode. | |
2003 // The run-time runtime saves the right registers, depending on | |
2004 // the tosca in-state for the given template. | |
2005 | |
2006 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
2007 "entry must have been generated"); | |
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2008 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 2009 __ andptr(rsp, -16); // align stack as required by ABI |
0 | 2010 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); |
304 | 2011 __ mov(rsp, r12); // restore sp |
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2012 __ reinit_heapbase(); |
0 | 2013 } |
2014 | |
2015 | |
2016 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
2017 Label L; | |
2018 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
2019 StopInterpreterAt); | |
2020 __ jcc(Assembler::notEqual, L); | |
2021 __ int3(); | |
2022 __ bind(L); | |
2023 } | |
2024 #endif // !PRODUCT | |
304 | 2025 #endif // ! CC_INTERP |