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annotate src/cpu/x86/vm/templateInterpreter_x86_64.cpp @ 8654:3bbad4ec6510
new phase: PushNodesThroughPi
author | Bernhard Urban <bernhard.urban@jku.at> |
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date | Thu, 04 Apr 2013 16:03:08 +0200 |
parents | 6b6cbd8b8914 |
children | b9a918201d47 |
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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" |
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26 #include "asm/macroAssembler.hpp" |
1972 | 27 #include "interpreter/bytecodeHistogram.hpp" |
28 #include "interpreter/interpreter.hpp" | |
29 #include "interpreter/interpreterGenerator.hpp" | |
30 #include "interpreter/interpreterRuntime.hpp" | |
31 #include "interpreter/templateTable.hpp" | |
32 #include "oops/arrayOop.hpp" | |
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33 #include "oops/methodData.hpp" |
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34 #include "oops/method.hpp" |
1972 | 35 #include "oops/oop.inline.hpp" |
36 #include "prims/jvmtiExport.hpp" | |
37 #include "prims/jvmtiThreadState.hpp" | |
38 #include "runtime/arguments.hpp" | |
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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" | |
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48 #include "utilities/macros.hpp" |
0 | 49 |
50 #define __ _masm-> | |
51 | |
304 | 52 #ifndef CC_INTERP |
53 | |
0 | 54 const int method_offset = frame::interpreter_frame_method_offset * wordSize; |
55 const int bci_offset = frame::interpreter_frame_bcx_offset * wordSize; | |
56 const int locals_offset = frame::interpreter_frame_locals_offset * wordSize; | |
57 | |
58 //----------------------------------------------------------------------------- | |
59 | |
60 address TemplateInterpreterGenerator::generate_StackOverflowError_handler() { | |
61 address entry = __ pc(); | |
62 | |
63 #ifdef ASSERT | |
64 { | |
65 Label L; | |
304 | 66 __ lea(rax, Address(rbp, |
67 frame::interpreter_frame_monitor_block_top_offset * | |
68 wordSize)); | |
69 __ cmpptr(rax, rsp); // rax = maximal rsp for current rbp (stack | |
70 // grows negative) | |
0 | 71 __ jcc(Assembler::aboveEqual, L); // check if frame is complete |
72 __ stop ("interpreter frame not set up"); | |
73 __ bind(L); | |
74 } | |
75 #endif // ASSERT | |
76 // Restore bcp under the assumption that the current frame is still | |
77 // interpreted | |
78 __ restore_bcp(); | |
79 | |
80 // expression stack must be empty before entering the VM if an | |
81 // exception happened | |
82 __ empty_expression_stack(); | |
83 // throw exception | |
84 __ call_VM(noreg, | |
85 CAST_FROM_FN_PTR(address, | |
86 InterpreterRuntime::throw_StackOverflowError)); | |
87 return entry; | |
88 } | |
89 | |
90 address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler( | |
91 const char* name) { | |
92 address entry = __ pc(); | |
93 // expression stack must be empty before entering the VM if an | |
94 // exception happened | |
95 __ empty_expression_stack(); | |
96 // setup parameters | |
97 // ??? convention: expect aberrant index in register ebx | |
98 __ lea(c_rarg1, ExternalAddress((address)name)); | |
99 __ call_VM(noreg, | |
100 CAST_FROM_FN_PTR(address, | |
101 InterpreterRuntime:: | |
102 throw_ArrayIndexOutOfBoundsException), | |
103 c_rarg1, rbx); | |
104 return entry; | |
105 } | |
106 | |
107 address TemplateInterpreterGenerator::generate_ClassCastException_handler() { | |
108 address entry = __ pc(); | |
109 | |
110 // object is at TOS | |
304 | 111 __ pop(c_rarg1); |
0 | 112 |
113 // expression stack must be empty before entering the VM if an | |
114 // exception happened | |
115 __ empty_expression_stack(); | |
116 | |
117 __ call_VM(noreg, | |
118 CAST_FROM_FN_PTR(address, | |
119 InterpreterRuntime:: | |
120 throw_ClassCastException), | |
121 c_rarg1); | |
122 return entry; | |
123 } | |
124 | |
125 address TemplateInterpreterGenerator::generate_exception_handler_common( | |
126 const char* name, const char* message, bool pass_oop) { | |
127 assert(!pass_oop || message == NULL, "either oop or message but not both"); | |
128 address entry = __ pc(); | |
129 if (pass_oop) { | |
130 // object is at TOS | |
304 | 131 __ pop(c_rarg2); |
0 | 132 } |
133 // expression stack must be empty before entering the VM if an | |
134 // exception happened | |
135 __ empty_expression_stack(); | |
136 // setup parameters | |
137 __ lea(c_rarg1, ExternalAddress((address)name)); | |
138 if (pass_oop) { | |
139 __ call_VM(rax, CAST_FROM_FN_PTR(address, | |
140 InterpreterRuntime:: | |
141 create_klass_exception), | |
142 c_rarg1, c_rarg2); | |
143 } else { | |
144 // kind of lame ExternalAddress can't take NULL because | |
145 // external_word_Relocation will assert. | |
146 if (message != NULL) { | |
147 __ lea(c_rarg2, ExternalAddress((address)message)); | |
148 } else { | |
149 __ movptr(c_rarg2, NULL_WORD); | |
150 } | |
151 __ call_VM(rax, | |
152 CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), | |
153 c_rarg1, c_rarg2); | |
154 } | |
155 // throw exception | |
156 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
157 return entry; | |
158 } | |
159 | |
160 | |
161 address TemplateInterpreterGenerator::generate_continuation_for(TosState state) { | |
162 address entry = __ pc(); | |
163 // NULL last_sp until next java call | |
304 | 164 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 165 __ dispatch_next(state); |
166 return entry; | |
167 } | |
168 | |
169 | |
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170 address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step) { |
0 | 171 address entry = __ pc(); |
172 | |
173 // Restore stack bottom in case i2c adjusted stack | |
304 | 174 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
0 | 175 // and NULL it as marker that esp is now tos until next java call |
304 | 176 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 177 |
178 __ restore_bcp(); | |
179 __ restore_locals(); | |
304 | 180 |
1108 | 181 Label L_got_cache, L_giant_index; |
182 if (EnableInvokeDynamic) { | |
183 __ cmpb(Address(r13, 0), Bytecodes::_invokedynamic); | |
184 __ jcc(Assembler::equal, L_giant_index); | |
185 } | |
1565 | 186 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u2)); |
1108 | 187 __ bind(L_got_cache); |
0 | 188 __ movl(rbx, Address(rbx, rcx, |
1108 | 189 Address::times_ptr, |
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190 in_bytes(ConstantPoolCache::base_offset()) + |
0 | 191 3 * wordSize)); |
192 __ andl(rbx, 0xFF); | |
304 | 193 __ lea(rsp, Address(rsp, rbx, Address::times_8)); |
0 | 194 __ dispatch_next(state, step); |
1108 | 195 |
196 // out of the main line of code... | |
197 if (EnableInvokeDynamic) { | |
198 __ bind(L_giant_index); | |
1565 | 199 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u4)); |
1108 | 200 __ jmp(L_got_cache); |
201 } | |
202 | |
0 | 203 return entry; |
204 } | |
205 | |
206 | |
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207 address InterpreterGenerator::generate_deopt_entry_for(TosState state, |
0 | 208 int step) { |
209 address entry = __ pc(); | |
210 // NULL last_sp until next java call | |
304 | 211 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 212 __ restore_bcp(); |
213 __ restore_locals(); | |
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214 // Check if we need to take lock at entry of synchronized method. |
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215 { |
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216 Label L; |
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217 __ cmpb(Address(r15_thread, Thread::pending_monitorenter_offset()), 0); |
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218 __ jcc(Assembler::zero, L); |
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219 // Clear flag. |
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220 __ movb(Address(r15_thread, Thread::pending_monitorenter_offset()), 0); |
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221 // Satisfy calling convention for lock_method(). |
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222 __ get_method(rbx); |
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223 // Take lock. |
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224 lock_method(); |
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225 __ bind(L); |
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226 } |
0 | 227 // handle exceptions |
228 { | |
229 Label L; | |
304 | 230 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
0 | 231 __ jcc(Assembler::zero, L); |
232 __ call_VM(noreg, | |
233 CAST_FROM_FN_PTR(address, | |
234 InterpreterRuntime::throw_pending_exception)); | |
235 __ should_not_reach_here(); | |
236 __ bind(L); | |
237 } | |
238 __ dispatch_next(state, step); | |
239 return entry; | |
240 } | |
241 | |
242 int AbstractInterpreter::BasicType_as_index(BasicType type) { | |
243 int i = 0; | |
244 switch (type) { | |
245 case T_BOOLEAN: i = 0; break; | |
246 case T_CHAR : i = 1; break; | |
247 case T_BYTE : i = 2; break; | |
248 case T_SHORT : i = 3; break; | |
249 case T_INT : i = 4; break; | |
250 case T_LONG : i = 5; break; | |
251 case T_VOID : i = 6; break; | |
252 case T_FLOAT : i = 7; break; | |
253 case T_DOUBLE : i = 8; break; | |
254 case T_OBJECT : i = 9; break; | |
255 case T_ARRAY : i = 9; break; | |
256 default : ShouldNotReachHere(); | |
257 } | |
258 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, | |
259 "index out of bounds"); | |
260 return i; | |
261 } | |
262 | |
263 | |
264 address TemplateInterpreterGenerator::generate_result_handler_for( | |
265 BasicType type) { | |
266 address entry = __ pc(); | |
267 switch (type) { | |
268 case T_BOOLEAN: __ c2bool(rax); break; | |
269 case T_CHAR : __ movzwl(rax, rax); break; | |
270 case T_BYTE : __ sign_extend_byte(rax); break; | |
271 case T_SHORT : __ sign_extend_short(rax); break; | |
272 case T_INT : /* nothing to do */ break; | |
273 case T_LONG : /* nothing to do */ break; | |
274 case T_VOID : /* nothing to do */ break; | |
275 case T_FLOAT : /* nothing to do */ break; | |
276 case T_DOUBLE : /* nothing to do */ break; | |
277 case T_OBJECT : | |
278 // retrieve result from frame | |
304 | 279 __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); |
0 | 280 // and verify it |
281 __ verify_oop(rax); | |
282 break; | |
283 default : ShouldNotReachHere(); | |
284 } | |
285 __ ret(0); // return from result handler | |
286 return entry; | |
287 } | |
288 | |
289 address TemplateInterpreterGenerator::generate_safept_entry_for( | |
290 TosState state, | |
291 address runtime_entry) { | |
292 address entry = __ pc(); | |
293 __ push(state); | |
294 __ call_VM(noreg, runtime_entry); | |
295 __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); | |
296 return entry; | |
297 } | |
298 | |
299 | |
300 | |
301 // Helpers for commoning out cases in the various type of method entries. | |
302 // | |
303 | |
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304 #ifdef GRAAL |
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305 |
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306 void graal_initialize_time(JavaThread* thread) { |
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307 frame fr = thread->last_frame(); |
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308 assert(fr.is_interpreted_frame(), "must come from interpreter"); |
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309 fr.interpreter_frame_method()->set_graal_invocation_time(os::javaTimeNanos()); |
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310 } |
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311 |
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312 #endif // GRAAL |
0 | 313 |
314 // increment invocation count & check for overflow | |
315 // | |
316 // Note: checking for negative value instead of overflow | |
317 // so we have a 'sticky' overflow test | |
318 // | |
319 // rbx: method | |
320 // ecx: invocation counter | |
321 // | |
322 void InterpreterGenerator::generate_counter_incr( | |
323 Label* overflow, | |
324 Label* profile_method, | |
325 Label* profile_method_continue) { | |
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326 const Address invocation_counter(rbx, in_bytes(Method::invocation_counter_offset()) + |
1783 | 327 in_bytes(InvocationCounter::counter_offset())); |
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328 // Note: In tiered we increment either counters in Method* or in MDO depending if we're profiling or not. |
1783 | 329 if (TieredCompilation) { |
330 int increment = InvocationCounter::count_increment; | |
331 int mask = ((1 << Tier0InvokeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
332 Label no_mdo, done; | |
333 if (ProfileInterpreter) { | |
334 // Are we profiling? | |
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335 __ movptr(rax, Address(rbx, Method::method_data_offset())); |
1783 | 336 __ testptr(rax, rax); |
337 __ jccb(Assembler::zero, no_mdo); | |
338 // Increment counter in the MDO | |
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339 const Address mdo_invocation_counter(rax, in_bytes(MethodData::invocation_counter_offset()) + |
1783 | 340 in_bytes(InvocationCounter::counter_offset())); |
341 __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rcx, false, Assembler::zero, overflow); | |
342 __ jmpb(done); | |
343 } | |
344 __ bind(no_mdo); | |
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345 // Increment counter in Method* (we don't need to load it, it's in ecx). |
1783 | 346 __ increment_mask_and_jump(invocation_counter, increment, mask, rcx, true, Assembler::zero, overflow); |
347 __ bind(done); | |
348 } else { | |
349 const Address backedge_counter(rbx, | |
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350 Method::backedge_counter_offset() + |
0 | 351 InvocationCounter::counter_offset()); |
352 | |
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353 if (ProfileInterpreter) { // %%% Merge this into MethodData* |
1783 | 354 __ incrementl(Address(rbx, |
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355 Method::interpreter_invocation_counter_offset())); |
1783 | 356 } |
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357 |
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358 #ifdef GRAAL |
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359 if (CompilationPolicyChoice == 4) { |
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360 Label not_zero; |
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361 __ testl(rcx, InvocationCounter::count_mask_value); |
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362 __ jcc(Assembler::notZero, not_zero); |
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363 |
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364 __ push(rcx); |
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365 __ call_VM(noreg, CAST_FROM_FN_PTR(address, graal_initialize_time), rdx, false); |
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366 __ set_method_data_pointer_for_bcp(); |
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367 __ get_method(rbx); |
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368 __ pop(rcx); |
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369 |
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370 __ testl(rcx, InvocationCounter::count_mask_value); |
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371 __ jcc(Assembler::zero, not_zero); |
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372 __ stop("unexpected counter value in rcx"); |
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373 |
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374 __ bind(not_zero); |
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375 } |
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376 #endif // GRAAL |
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377 |
1783 | 378 // Update standard invocation counters |
379 __ movl(rax, backedge_counter); // load backedge counter | |
0 | 380 |
1783 | 381 __ incrementl(rcx, InvocationCounter::count_increment); |
382 __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits | |
0 | 383 |
1783 | 384 __ movl(invocation_counter, rcx); // save invocation count |
385 __ addl(rcx, rax); // add both counters | |
0 | 386 |
1783 | 387 // profile_method is non-null only for interpreted method so |
388 // profile_method != NULL == !native_call | |
389 | |
390 if (ProfileInterpreter && profile_method != NULL) { | |
391 // Test to see if we should create a method data oop | |
392 __ cmp32(rcx, ExternalAddress((address)&InvocationCounter::InterpreterProfileLimit)); | |
393 __ jcc(Assembler::less, *profile_method_continue); | |
0 | 394 |
1783 | 395 // if no method data exists, go to profile_method |
396 __ test_method_data_pointer(rax, *profile_method); | |
397 } | |
398 | |
399 __ cmp32(rcx, ExternalAddress((address)&InvocationCounter::InterpreterInvocationLimit)); | |
400 __ jcc(Assembler::aboveEqual, *overflow); | |
0 | 401 } |
402 } | |
403 | |
404 void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { | |
405 | |
406 // Asm interpreter on entry | |
407 // r14 - locals | |
408 // r13 - bcp | |
409 // rbx - method | |
410 // edx - cpool --- DOES NOT APPEAR TO BE TRUE | |
411 // rbp - interpreter frame | |
412 | |
413 // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] | |
414 // Everything as it was on entry | |
415 // rdx is not restored. Doesn't appear to really be set. | |
416 | |
417 // InterpreterRuntime::frequency_counter_overflow takes two | |
418 // arguments, the first (thread) is passed by call_VM, the second | |
419 // indicates if the counter overflow occurs at a backwards branch | |
420 // (NULL bcp). We pass zero for it. The call returns the address | |
421 // of the verified entry point for the method or NULL if the | |
422 // compilation did not complete (either went background or bailed | |
423 // out). | |
424 __ movl(c_rarg1, 0); | |
425 __ call_VM(noreg, | |
426 CAST_FROM_FN_PTR(address, | |
427 InterpreterRuntime::frequency_counter_overflow), | |
428 c_rarg1); | |
429 | |
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430 __ movptr(rbx, Address(rbp, method_offset)); // restore Method* |
0 | 431 // Preserve invariant that r13/r14 contain bcp/locals of sender frame |
432 // and jump to the interpreted entry. | |
433 __ jmp(*do_continue, relocInfo::none); | |
434 } | |
435 | |
436 // See if we've got enough room on the stack for locals plus overhead. | |
437 // The expression stack grows down incrementally, so the normal guard | |
438 // page mechanism will work for that. | |
439 // | |
440 // NOTE: Since the additional locals are also always pushed (wasn't | |
441 // obvious in generate_method_entry) so the guard should work for them | |
442 // too. | |
443 // | |
444 // Args: | |
445 // rdx: number of additional locals this frame needs (what we must check) | |
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446 // rbx: Method* |
0 | 447 // |
448 // Kills: | |
449 // rax | |
450 void InterpreterGenerator::generate_stack_overflow_check(void) { | |
451 | |
452 // monitor entry size: see picture of stack set | |
453 // (generate_method_entry) and frame_amd64.hpp | |
454 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
455 | |
456 // total overhead size: entry_size + (saved rbp through expr stack | |
457 // bottom). be sure to change this if you add/subtract anything | |
458 // to/from the overhead area | |
459 const int overhead_size = | |
460 -(frame::interpreter_frame_initial_sp_offset * wordSize) + entry_size; | |
461 | |
462 const int page_size = os::vm_page_size(); | |
463 | |
464 Label after_frame_check; | |
465 | |
466 // see if the frame is greater than one page in size. If so, | |
467 // then we need to verify there is enough stack space remaining | |
468 // for the additional locals. | |
1506 | 469 __ cmpl(rdx, (page_size - overhead_size) / Interpreter::stackElementSize); |
0 | 470 __ jcc(Assembler::belowEqual, after_frame_check); |
471 | |
472 // compute rsp as if this were going to be the last frame on | |
473 // the stack before the red zone | |
474 | |
475 const Address stack_base(r15_thread, Thread::stack_base_offset()); | |
476 const Address stack_size(r15_thread, Thread::stack_size_offset()); | |
477 | |
478 // locals + overhead, in bytes | |
304 | 479 __ mov(rax, rdx); |
1506 | 480 __ shlptr(rax, Interpreter::logStackElementSize); // 2 slots per parameter. |
304 | 481 __ addptr(rax, overhead_size); |
0 | 482 |
483 #ifdef ASSERT | |
484 Label stack_base_okay, stack_size_okay; | |
485 // verify that thread stack base is non-zero | |
304 | 486 __ cmpptr(stack_base, (int32_t)NULL_WORD); |
0 | 487 __ jcc(Assembler::notEqual, stack_base_okay); |
488 __ stop("stack base is zero"); | |
489 __ bind(stack_base_okay); | |
490 // verify that thread stack size is non-zero | |
304 | 491 __ cmpptr(stack_size, 0); |
0 | 492 __ jcc(Assembler::notEqual, stack_size_okay); |
493 __ stop("stack size is zero"); | |
494 __ bind(stack_size_okay); | |
495 #endif | |
496 | |
497 // Add stack base to locals and subtract stack size | |
304 | 498 __ addptr(rax, stack_base); |
499 __ subptr(rax, stack_size); | |
0 | 500 |
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501 // Use the maximum number of pages we might bang. |
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502 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : |
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503 (StackRedPages+StackYellowPages); |
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504 |
0 | 505 // add in the red and yellow zone sizes |
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506 __ addptr(rax, max_pages * page_size); |
0 | 507 |
508 // check against the current stack bottom | |
304 | 509 __ cmpptr(rsp, rax); |
0 | 510 __ jcc(Assembler::above, after_frame_check); |
511 | |
4743 | 512 // Restore sender's sp as SP. This is necessary if the sender's |
513 // frame is an extended compiled frame (see gen_c2i_adapter()) | |
514 // and safer anyway in case of JSR292 adaptations. | |
515 | |
516 __ pop(rax); // return address must be moved if SP is changed | |
517 __ mov(rsp, r13); | |
518 __ push(rax); | |
519 | |
520 // Note: the restored frame is not necessarily interpreted. | |
521 // Use the shared runtime version of the StackOverflowError. | |
522 assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated"); | |
523 __ jump(ExternalAddress(StubRoutines::throw_StackOverflowError_entry())); | |
0 | 524 |
525 // all done with frame size check | |
526 __ bind(after_frame_check); | |
527 } | |
528 | |
529 // Allocate monitor and lock method (asm interpreter) | |
530 // | |
531 // Args: | |
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532 // rbx: Method* |
0 | 533 // r14: locals |
534 // | |
535 // Kills: | |
536 // rax | |
537 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, ...(param regs) | |
538 // rscratch1, rscratch2 (scratch regs) | |
539 void InterpreterGenerator::lock_method(void) { | |
540 // synchronize method | |
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541 const Address access_flags(rbx, Method::access_flags_offset()); |
0 | 542 const Address monitor_block_top( |
543 rbp, | |
544 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
545 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
546 | |
547 #ifdef ASSERT | |
548 { | |
549 Label L; | |
550 __ movl(rax, access_flags); | |
551 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
552 __ jcc(Assembler::notZero, L); | |
553 __ stop("method doesn't need synchronization"); | |
554 __ bind(L); | |
555 } | |
556 #endif // ASSERT | |
557 | |
558 // get synchronization object | |
559 { | |
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560 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
0 | 561 Label done; |
562 __ movl(rax, access_flags); | |
563 __ testl(rax, JVM_ACC_STATIC); | |
564 // get receiver (assume this is frequent case) | |
304 | 565 __ movptr(rax, Address(r14, Interpreter::local_offset_in_bytes(0))); |
0 | 566 __ jcc(Assembler::zero, done); |
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567 __ movptr(rax, Address(rbx, Method::const_offset())); |
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568 __ movptr(rax, Address(rax, ConstMethod::constants_offset())); |
304 | 569 __ movptr(rax, Address(rax, |
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570 ConstantPool::pool_holder_offset_in_bytes())); |
304 | 571 __ movptr(rax, Address(rax, mirror_offset)); |
0 | 572 |
573 #ifdef ASSERT | |
574 { | |
575 Label L; | |
304 | 576 __ testptr(rax, rax); |
0 | 577 __ jcc(Assembler::notZero, L); |
578 __ stop("synchronization object is NULL"); | |
579 __ bind(L); | |
580 } | |
581 #endif // ASSERT | |
582 | |
583 __ bind(done); | |
584 } | |
585 | |
586 // add space for monitor & lock | |
304 | 587 __ subptr(rsp, entry_size); // add space for a monitor entry |
588 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
0 | 589 // store object |
304 | 590 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); |
591 __ movptr(c_rarg1, rsp); // object address | |
0 | 592 __ lock_object(c_rarg1); |
593 } | |
594 | |
595 // Generate a fixed interpreter frame. This is identical setup for | |
596 // interpreted methods and for native methods hence the shared code. | |
597 // | |
598 // Args: | |
599 // rax: return address | |
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600 // rbx: Method* |
0 | 601 // r14: pointer to locals |
602 // r13: sender sp | |
603 // rdx: cp cache | |
604 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
605 // initialize fixed part of activation frame | |
304 | 606 __ push(rax); // save return address |
0 | 607 __ enter(); // save old & set new rbp |
304 | 608 __ push(r13); // set sender sp |
609 __ push((int)NULL_WORD); // leave last_sp as null | |
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610 __ movptr(r13, Address(rbx, Method::const_offset())); // get ConstMethod* |
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611 __ lea(r13, Address(r13, ConstMethod::codes_offset())); // get codebase |
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612 __ push(rbx); // save Method* |
0 | 613 if (ProfileInterpreter) { |
614 Label method_data_continue; | |
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615 __ movptr(rdx, Address(rbx, in_bytes(Method::method_data_offset()))); |
304 | 616 __ testptr(rdx, rdx); |
0 | 617 __ jcc(Assembler::zero, method_data_continue); |
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618 __ addptr(rdx, in_bytes(MethodData::data_offset())); |
0 | 619 __ bind(method_data_continue); |
304 | 620 __ push(rdx); // set the mdp (method data pointer) |
0 | 621 } else { |
304 | 622 __ push(0); |
0 | 623 } |
624 | |
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625 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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626 __ movptr(rdx, Address(rdx, ConstMethod::constants_offset())); |
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627 __ movptr(rdx, Address(rdx, ConstantPool::cache_offset_in_bytes())); |
304 | 628 __ push(rdx); // set constant pool cache |
629 __ push(r14); // set locals pointer | |
0 | 630 if (native_call) { |
304 | 631 __ push(0); // no bcp |
0 | 632 } else { |
304 | 633 __ push(r13); // set bcp |
0 | 634 } |
304 | 635 __ push(0); // reserve word for pointer to expression stack bottom |
636 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
0 | 637 } |
638 | |
639 // End of helpers | |
640 | |
304 | 641 // Various method entries |
642 //------------------------------------------------------------------------------------------------------------------------ | |
643 // | |
644 // | |
645 | |
646 // Call an accessor method (assuming it is resolved, otherwise drop | |
647 // into vanilla (slow path) entry | |
648 address InterpreterGenerator::generate_accessor_entry(void) { | |
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649 // rbx: Method* |
304 | 650 |
651 // r13: senderSP must preserver for slow path, set SP to it on fast path | |
652 | |
653 address entry_point = __ pc(); | |
654 Label xreturn_path; | |
655 | |
656 // do fastpath for resolved accessor methods | |
657 if (UseFastAccessorMethods) { | |
658 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites | |
659 // thereof; parameter size = 1 | |
660 // Note: We can only use this code if the getfield has been resolved | |
661 // and if we don't have a null-pointer exception => check for | |
662 // these conditions first and use slow path if necessary. | |
663 Label slow_path; | |
664 // If we need a safepoint check, generate full interpreter entry. | |
665 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
666 SafepointSynchronize::_not_synchronized); | |
667 | |
668 __ jcc(Assembler::notEqual, slow_path); | |
669 // rbx: method | |
670 __ movptr(rax, Address(rsp, wordSize)); | |
671 | |
672 // check if local 0 != NULL and read field | |
673 __ testptr(rax, rax); | |
674 __ jcc(Assembler::zero, slow_path); | |
675 | |
676 // read first instruction word and extract bytecode @ 1 and index @ 2 | |
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677 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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678 __ movptr(rdi, Address(rdx, ConstMethod::constants_offset())); |
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679 __ movl(rdx, Address(rdx, ConstMethod::codes_offset())); |
304 | 680 // Shift codes right to get the index on the right. |
681 // The bytecode fetched looks like <index><0xb4><0x2a> | |
682 __ shrl(rdx, 2 * BitsPerByte); | |
683 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
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684 __ movptr(rdi, Address(rdi, ConstantPool::cache_offset_in_bytes())); |
304 | 685 |
686 // rax: local 0 | |
687 // rbx: method | |
688 // rdx: constant pool cache index | |
689 // rdi: constant pool cache | |
690 | |
691 // check if getfield has been resolved and read constant pool cache entry | |
692 // check the validity of the cache entry by testing whether _indices field | |
693 // contains Bytecode::_getfield in b1 byte. | |
694 assert(in_words(ConstantPoolCacheEntry::size()) == 4, | |
695 "adjust shift below"); | |
696 __ movl(rcx, | |
697 Address(rdi, | |
698 rdx, | |
699 Address::times_8, | |
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700 ConstantPoolCache::base_offset() + |
304 | 701 ConstantPoolCacheEntry::indices_offset())); |
702 __ shrl(rcx, 2 * BitsPerByte); | |
703 __ andl(rcx, 0xFF); | |
704 __ cmpl(rcx, Bytecodes::_getfield); | |
705 __ jcc(Assembler::notEqual, slow_path); | |
706 | |
707 // Note: constant pool entry is not valid before bytecode is resolved | |
708 __ movptr(rcx, | |
709 Address(rdi, | |
710 rdx, | |
711 Address::times_8, | |
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712 ConstantPoolCache::base_offset() + |
304 | 713 ConstantPoolCacheEntry::f2_offset())); |
714 // edx: flags | |
715 __ movl(rdx, | |
716 Address(rdi, | |
717 rdx, | |
718 Address::times_8, | |
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719 ConstantPoolCache::base_offset() + |
304 | 720 ConstantPoolCacheEntry::flags_offset())); |
721 | |
722 Label notObj, notInt, notByte, notShort; | |
723 const Address field_address(rax, rcx, Address::times_1); | |
724 | |
725 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
726 // because they are different sizes. | |
727 // Use the type from the constant pool cache | |
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728 __ shrl(rdx, ConstantPoolCacheEntry::tos_state_shift); |
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729 // Make sure we don't need to mask edx after the above shift |
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730 ConstantPoolCacheEntry::verify_tos_state_shift(); |
304 | 731 |
732 __ cmpl(rdx, atos); | |
733 __ jcc(Assembler::notEqual, notObj); | |
734 // atos | |
735 __ load_heap_oop(rax, field_address); | |
736 __ jmp(xreturn_path); | |
737 | |
738 __ bind(notObj); | |
739 __ cmpl(rdx, itos); | |
740 __ jcc(Assembler::notEqual, notInt); | |
741 // itos | |
742 __ movl(rax, field_address); | |
743 __ jmp(xreturn_path); | |
744 | |
745 __ bind(notInt); | |
746 __ cmpl(rdx, btos); | |
747 __ jcc(Assembler::notEqual, notByte); | |
748 // btos | |
749 __ load_signed_byte(rax, field_address); | |
750 __ jmp(xreturn_path); | |
751 | |
752 __ bind(notByte); | |
753 __ cmpl(rdx, stos); | |
754 __ jcc(Assembler::notEqual, notShort); | |
755 // stos | |
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756 __ load_signed_short(rax, field_address); |
304 | 757 __ jmp(xreturn_path); |
758 | |
759 __ bind(notShort); | |
760 #ifdef ASSERT | |
761 Label okay; | |
762 __ cmpl(rdx, ctos); | |
763 __ jcc(Assembler::equal, okay); | |
764 __ stop("what type is this?"); | |
765 __ bind(okay); | |
766 #endif | |
767 // ctos | |
622
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768 __ load_unsigned_short(rax, field_address); |
304 | 769 |
770 __ bind(xreturn_path); | |
771 | |
772 // _ireturn/_areturn | |
773 __ pop(rdi); | |
774 __ mov(rsp, r13); | |
775 __ jmp(rdi); | |
776 __ ret(0); | |
777 | |
778 // generate a vanilla interpreter entry as the slow path | |
779 __ bind(slow_path); | |
780 (void) generate_normal_entry(false); | |
781 } else { | |
782 (void) generate_normal_entry(false); | |
783 } | |
784 | |
785 return entry_point; | |
786 } | |
787 | |
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788 // Method entry for java.lang.ref.Reference.get. |
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789 address InterpreterGenerator::generate_Reference_get_entry(void) { |
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790 #if INCLUDE_ALL_GCS |
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791 // Code: _aload_0, _getfield, _areturn |
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792 // parameter size = 1 |
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793 // |
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794 // The code that gets generated by this routine is split into 2 parts: |
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795 // 1. The "intrinsified" code for G1 (or any SATB based GC), |
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796 // 2. The slow path - which is an expansion of the regular method entry. |
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797 // |
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798 // Notes:- |
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799 // * In the G1 code we do not check whether we need to block for |
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800 // a safepoint. If G1 is enabled then we must execute the specialized |
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801 // code for Reference.get (except when the Reference object is null) |
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802 // so that we can log the value in the referent field with an SATB |
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803 // update buffer. |
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804 // If the code for the getfield template is modified so that the |
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805 // G1 pre-barrier code is executed when the current method is |
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806 // Reference.get() then going through the normal method entry |
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807 // will be fine. |
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808 // * The G1 code can, however, check the receiver object (the instance |
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809 // of java.lang.Reference) and jump to the slow path if null. If the |
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810 // Reference object is null then we obviously cannot fetch the referent |
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811 // and so we don't need to call the G1 pre-barrier. Thus we can use the |
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812 // regular method entry code to generate the NPE. |
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813 // |
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814 // This code is based on generate_accessor_enty. |
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815 // |
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816 // rbx: Method* |
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817 |
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818 // r13: senderSP must preserve for slow path, set SP to it on fast path |
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819 |
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820 address entry = __ pc(); |
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821 |
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822 const int referent_offset = java_lang_ref_Reference::referent_offset; |
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823 guarantee(referent_offset > 0, "referent offset not initialized"); |
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824 |
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825 if (UseG1GC) { |
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826 Label slow_path; |
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827 // rbx: method |
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828 |
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829 // Check if local 0 != NULL |
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830 // If the receiver is null then it is OK to jump to the slow path. |
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831 __ movptr(rax, Address(rsp, wordSize)); |
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832 |
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833 __ testptr(rax, rax); |
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834 __ jcc(Assembler::zero, slow_path); |
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835 |
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836 // rax: local 0 |
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837 // rbx: method (but can be used as scratch now) |
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838 // rdx: scratch |
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839 // rdi: scratch |
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840 |
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841 // Generate the G1 pre-barrier code to log the value of |
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842 // the referent field in an SATB buffer. |
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843 |
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844 // Load the value of the referent field. |
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845 const Address field_address(rax, referent_offset); |
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846 __ load_heap_oop(rax, field_address); |
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847 |
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848 // Generate the G1 pre-barrier code to log the value of |
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849 // the referent field in an SATB buffer. |
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850 __ g1_write_barrier_pre(noreg /* obj */, |
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851 rax /* pre_val */, |
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852 r15_thread /* thread */, |
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853 rbx /* tmp */, |
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854 true /* tosca_live */, |
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855 true /* expand_call */); |
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856 |
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857 // _areturn |
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858 __ pop(rdi); // get return address |
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859 __ mov(rsp, r13); // set sp to sender sp |
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860 __ jmp(rdi); |
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861 __ ret(0); |
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862 |
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863 // generate a vanilla interpreter entry as the slow path |
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864 __ bind(slow_path); |
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865 (void) generate_normal_entry(false); |
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866 |
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867 return entry; |
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868 } |
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869 #endif // INCLUDE_ALL_GCS |
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870 |
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871 // If G1 is not enabled then attempt to go through the accessor entry point |
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872 // Reference.get is an accessor |
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873 return generate_accessor_entry(); |
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874 } |
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875 |
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876 |
0 | 877 // Interpreter stub for calling a native method. (asm interpreter) |
878 // This sets up a somewhat different looking stack for calling the | |
879 // native method than the typical interpreter frame setup. | |
880 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
881 // determine code generation flags | |
882 bool inc_counter = UseCompiler || CountCompiledCalls; | |
883 | |
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884 // rbx: Method* |
0 | 885 // r13: sender sp |
886 | |
887 address entry_point = __ pc(); | |
888 | |
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889 const Address constMethod (rbx, Method::const_offset()); |
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890 const Address invocation_counter(rbx, Method:: |
0 | 891 invocation_counter_offset() + |
892 InvocationCounter::counter_offset()); | |
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893 const Address access_flags (rbx, Method::access_flags_offset()); |
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894 const Address size_of_parameters(rcx, ConstMethod:: |
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895 size_of_parameters_offset()); |
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896 |
0 | 897 |
898 // get parameter size (always needed) | |
7402
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899 __ movptr(rcx, constMethod); |
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900 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 901 |
902 // native calls don't need the stack size check since they have no | |
903 // expression stack and the arguments are already on the stack and | |
904 // we only add a handful of words to the stack | |
905 | |
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906 // rbx: Method* |
0 | 907 // rcx: size of parameters |
908 // r13: sender sp | |
304 | 909 __ pop(rax); // get return address |
0 | 910 |
911 // for natives the size of locals is zero | |
912 | |
913 // compute beginning of parameters (r14) | |
304 | 914 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
0 | 915 |
916 // add 2 zero-initialized slots for native calls | |
917 // initialize result_handler slot | |
304 | 918 __ push((int) NULL_WORD); |
0 | 919 // slot for oop temp |
920 // (static native method holder mirror/jni oop result) | |
304 | 921 __ push((int) NULL_WORD); |
0 | 922 |
923 if (inc_counter) { | |
924 __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
925 } | |
926 | |
927 // initialize fixed part of activation frame | |
928 generate_fixed_frame(true); | |
929 | |
930 // make sure method is native & not abstract | |
931 #ifdef ASSERT | |
932 __ movl(rax, access_flags); | |
933 { | |
934 Label L; | |
935 __ testl(rax, JVM_ACC_NATIVE); | |
936 __ jcc(Assembler::notZero, L); | |
937 __ stop("tried to execute non-native method as native"); | |
938 __ bind(L); | |
939 } | |
940 { | |
941 Label L; | |
942 __ testl(rax, JVM_ACC_ABSTRACT); | |
943 __ jcc(Assembler::zero, L); | |
944 __ stop("tried to execute abstract method in interpreter"); | |
945 __ bind(L); | |
946 } | |
947 #endif | |
948 | |
949 // Since at this point in the method invocation the exception handler | |
950 // would try to exit the monitor of synchronized methods which hasn't | |
951 // been entered yet, we set the thread local variable | |
952 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
953 // check this flag. | |
954 | |
955 const Address do_not_unlock_if_synchronized(r15_thread, | |
956 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
957 __ movbool(do_not_unlock_if_synchronized, true); | |
958 | |
959 // increment invocation count & check for overflow | |
960 Label invocation_counter_overflow; | |
961 if (inc_counter) { | |
962 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
963 } | |
964 | |
965 Label continue_after_compile; | |
966 __ bind(continue_after_compile); | |
967 | |
968 bang_stack_shadow_pages(true); | |
969 | |
970 // reset the _do_not_unlock_if_synchronized flag | |
971 __ movbool(do_not_unlock_if_synchronized, false); | |
972 | |
973 // check for synchronized methods | |
974 // Must happen AFTER invocation_counter check and stack overflow check, | |
975 // so method is not locked if overflows. | |
976 if (synchronized) { | |
977 lock_method(); | |
978 } else { | |
979 // no synchronization necessary | |
980 #ifdef ASSERT | |
981 { | |
982 Label L; | |
983 __ movl(rax, access_flags); | |
984 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
985 __ jcc(Assembler::zero, L); | |
986 __ stop("method needs synchronization"); | |
987 __ bind(L); | |
988 } | |
989 #endif | |
990 } | |
991 | |
992 // start execution | |
993 #ifdef ASSERT | |
994 { | |
995 Label L; | |
996 const Address monitor_block_top(rbp, | |
997 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 998 __ movptr(rax, monitor_block_top); |
999 __ cmpptr(rax, rsp); | |
0 | 1000 __ jcc(Assembler::equal, L); |
1001 __ stop("broken stack frame setup in interpreter"); | |
1002 __ bind(L); | |
1003 } | |
1004 #endif | |
1005 | |
1006 // jvmti support | |
1007 __ notify_method_entry(); | |
1008 | |
1009 // work registers | |
1010 const Register method = rbx; | |
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1011 const Register t = r11; |
0 | 1012 |
1013 // allocate space for parameters | |
1014 __ get_method(method); | |
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1015 __ movptr(t, Address(method, Method::const_offset())); |
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1016 __ load_unsigned_short(t, Address(t, ConstMethod::size_of_parameters_offset())); |
1506 | 1017 __ shll(t, Interpreter::logStackElementSize); |
0 | 1018 |
304 | 1019 __ subptr(rsp, t); |
1020 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows | |
605 | 1021 __ andptr(rsp, -16); // must be 16 byte boundary (see amd64 ABI) |
0 | 1022 |
1023 // get signature handler | |
1024 { | |
1025 Label L; | |
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1026 __ movptr(t, Address(method, Method::signature_handler_offset())); |
304 | 1027 __ testptr(t, t); |
0 | 1028 __ jcc(Assembler::notZero, L); |
1029 __ call_VM(noreg, | |
1030 CAST_FROM_FN_PTR(address, | |
1031 InterpreterRuntime::prepare_native_call), | |
1032 method); | |
1033 __ get_method(method); | |
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1034 __ movptr(t, Address(method, Method::signature_handler_offset())); |
0 | 1035 __ bind(L); |
1036 } | |
1037 | |
1038 // call signature handler | |
1039 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == r14, | |
1040 "adjust this code"); | |
1041 assert(InterpreterRuntime::SignatureHandlerGenerator::to() == rsp, | |
1042 "adjust this code"); | |
1043 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == rscratch1, | |
1044 "adjust this code"); | |
1045 | |
1046 // The generated handlers do not touch RBX (the method oop). | |
1047 // However, large signatures cannot be cached and are generated | |
1048 // each time here. The slow-path generator can do a GC on return, | |
1049 // so we must reload it after the call. | |
1050 __ call(t); | |
1051 __ get_method(method); // slow path can do a GC, reload RBX | |
1052 | |
1053 | |
1054 // result handler is in rax | |
1055 // set result handler | |
304 | 1056 __ movptr(Address(rbp, |
1057 (frame::interpreter_frame_result_handler_offset) * wordSize), | |
1058 rax); | |
0 | 1059 |
1060 // pass mirror handle if static call | |
1061 { | |
1062 Label L; | |
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1063 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
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1064 __ movl(t, Address(method, Method::access_flags_offset())); |
0 | 1065 __ testl(t, JVM_ACC_STATIC); |
1066 __ jcc(Assembler::zero, L); | |
1067 // get mirror | |
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1068 __ movptr(t, Address(method, Method::const_offset())); |
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1069 __ movptr(t, Address(t, ConstMethod::constants_offset())); |
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1070 __ movptr(t, Address(t, ConstantPool::pool_holder_offset_in_bytes())); |
304 | 1071 __ movptr(t, Address(t, mirror_offset)); |
0 | 1072 // copy mirror into activation frame |
304 | 1073 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), |
0 | 1074 t); |
1075 // pass handle to mirror | |
304 | 1076 __ lea(c_rarg1, |
1077 Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); | |
0 | 1078 __ bind(L); |
1079 } | |
1080 | |
1081 // get native function entry point | |
1082 { | |
1083 Label L; | |
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1084 __ movptr(rax, Address(method, Method::native_function_offset())); |
0 | 1085 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
1086 __ movptr(rscratch2, unsatisfied.addr()); | |
304 | 1087 __ cmpptr(rax, rscratch2); |
0 | 1088 __ jcc(Assembler::notEqual, L); |
1089 __ call_VM(noreg, | |
1090 CAST_FROM_FN_PTR(address, | |
1091 InterpreterRuntime::prepare_native_call), | |
1092 method); | |
1093 __ get_method(method); | |
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1094 __ movptr(rax, Address(method, Method::native_function_offset())); |
0 | 1095 __ bind(L); |
1096 } | |
1097 | |
1098 // pass JNIEnv | |
304 | 1099 __ lea(c_rarg0, Address(r15_thread, JavaThread::jni_environment_offset())); |
0 | 1100 |
1101 // It is enough that the pc() points into the right code | |
1102 // segment. It does not have to be the correct return pc. | |
1103 __ set_last_Java_frame(rsp, rbp, (address) __ pc()); | |
1104 | |
1105 // change thread state | |
1106 #ifdef ASSERT | |
1107 { | |
1108 Label L; | |
1109 __ movl(t, Address(r15_thread, JavaThread::thread_state_offset())); | |
1110 __ cmpl(t, _thread_in_Java); | |
1111 __ jcc(Assembler::equal, L); | |
1112 __ stop("Wrong thread state in native stub"); | |
1113 __ bind(L); | |
1114 } | |
1115 #endif | |
1116 | |
1117 // Change state to native | |
1118 | |
1119 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
1120 _thread_in_native); | |
1121 | |
1122 // Call the native method. | |
1123 __ call(rax); | |
1124 // result potentially in rax or xmm0 | |
1125 | |
1126 // Depending on runtime options, either restore the MXCSR | |
1127 // register after returning from the JNI Call or verify that | |
1128 // it wasn't changed during -Xcheck:jni. | |
1129 if (RestoreMXCSROnJNICalls) { | |
304 | 1130 __ ldmxcsr(ExternalAddress(StubRoutines::x86::mxcsr_std())); |
0 | 1131 } |
1132 else if (CheckJNICalls) { | |
304 | 1133 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, StubRoutines::x86::verify_mxcsr_entry()))); |
0 | 1134 } |
1135 | |
1136 // NOTE: The order of these pushes is known to frame::interpreter_frame_result | |
1137 // in order to extract the result of a method call. If the order of these | |
1138 // pushes change or anything else is added to the stack then the code in | |
1139 // interpreter_frame_result must also change. | |
1140 | |
1141 __ push(dtos); | |
1142 __ push(ltos); | |
1143 | |
1144 // change thread state | |
1145 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
1146 _thread_in_native_trans); | |
1147 | |
1148 if (os::is_MP()) { | |
1149 if (UseMembar) { | |
1150 // Force this write out before the read below | |
1151 __ membar(Assembler::Membar_mask_bits( | |
1152 Assembler::LoadLoad | Assembler::LoadStore | | |
1153 Assembler::StoreLoad | Assembler::StoreStore)); | |
1154 } else { | |
1155 // Write serialization page so VM thread can do a pseudo remote membar. | |
1156 // We use the current thread pointer to calculate a thread specific | |
1157 // offset to write to within the page. This minimizes bus traffic | |
1158 // due to cache line collision. | |
1159 __ serialize_memory(r15_thread, rscratch2); | |
1160 } | |
1161 } | |
1162 | |
1163 // check for safepoint operation in progress and/or pending suspend requests | |
1164 { | |
1165 Label Continue; | |
1166 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
1167 SafepointSynchronize::_not_synchronized); | |
1168 | |
1169 Label L; | |
1170 __ jcc(Assembler::notEqual, L); | |
1171 __ cmpl(Address(r15_thread, JavaThread::suspend_flags_offset()), 0); | |
1172 __ jcc(Assembler::equal, Continue); | |
1173 __ bind(L); | |
1174 | |
1175 // Don't use call_VM as it will see a possible pending exception | |
1176 // and forward it and never return here preventing us from | |
1177 // clearing _last_native_pc down below. Also can't use | |
1178 // call_VM_leaf either as it will check to see if r13 & r14 are | |
1179 // preserved and correspond to the bcp/locals pointers. So we do a | |
1180 // runtime call by hand. | |
1181 // | |
304 | 1182 __ mov(c_rarg0, r15_thread); |
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1183 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1184 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
1185 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1186 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans))); |
304 | 1187 __ mov(rsp, r12); // restore sp |
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1188 __ reinit_heapbase(); |
0 | 1189 __ bind(Continue); |
1190 } | |
1191 | |
1192 // change thread state | |
1193 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
1194 | |
1195 // reset_last_Java_frame | |
1196 __ reset_last_Java_frame(true, true); | |
1197 | |
1198 // reset handle block | |
304 | 1199 __ movptr(t, Address(r15_thread, JavaThread::active_handles_offset())); |
1200 __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD); | |
0 | 1201 |
1202 // If result is an oop unbox and store it in frame where gc will see it | |
1203 // and result handler will pick it up | |
1204 | |
1205 { | |
1206 Label no_oop, store_result; | |
1207 __ lea(t, ExternalAddress(AbstractInterpreter::result_handler(T_OBJECT))); | |
304 | 1208 __ cmpptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
0 | 1209 __ jcc(Assembler::notEqual, no_oop); |
1210 // retrieve result | |
1211 __ pop(ltos); | |
304 | 1212 __ testptr(rax, rax); |
0 | 1213 __ jcc(Assembler::zero, store_result); |
304 | 1214 __ movptr(rax, Address(rax, 0)); |
0 | 1215 __ bind(store_result); |
304 | 1216 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize), rax); |
0 | 1217 // keep stack depth as expected by pushing oop which will eventually be discarde |
1218 __ push(ltos); | |
1219 __ bind(no_oop); | |
1220 } | |
1221 | |
1222 | |
1223 { | |
1224 Label no_reguard; | |
1225 __ cmpl(Address(r15_thread, JavaThread::stack_guard_state_offset()), | |
1226 JavaThread::stack_guard_yellow_disabled); | |
1227 __ jcc(Assembler::notEqual, no_reguard); | |
1228 | |
304 | 1229 __ pusha(); // XXX only save smashed registers |
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1230 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1231 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
1232 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1233 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
304 | 1234 __ mov(rsp, r12); // restore sp |
1235 __ popa(); // XXX only restore smashed registers | |
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1236 __ reinit_heapbase(); |
0 | 1237 |
1238 __ bind(no_reguard); | |
1239 } | |
1240 | |
1241 | |
1242 // The method register is junk from after the thread_in_native transition | |
1243 // until here. Also can't call_VM until the bcp has been | |
1244 // restored. Need bcp for throwing exception below so get it now. | |
1245 __ get_method(method); | |
1246 | |
1247 // restore r13 to have legal interpreter frame, i.e., bci == 0 <=> | |
1248 // r13 == code_base() | |
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1249 __ movptr(r13, Address(method, Method::const_offset())); // get ConstMethod* |
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1250 __ lea(r13, Address(r13, ConstMethod::codes_offset())); // get codebase |
0 | 1251 // handle exceptions (exception handling will handle unlocking!) |
1252 { | |
1253 Label L; | |
304 | 1254 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
0 | 1255 __ jcc(Assembler::zero, L); |
1256 // Note: At some point we may want to unify this with the code | |
1257 // used in call_VM_base(); i.e., we should use the | |
1258 // StubRoutines::forward_exception code. For now this doesn't work | |
1259 // here because the rsp is not correctly set at this point. | |
1260 __ MacroAssembler::call_VM(noreg, | |
1261 CAST_FROM_FN_PTR(address, | |
1262 InterpreterRuntime::throw_pending_exception)); | |
1263 __ should_not_reach_here(); | |
1264 __ bind(L); | |
1265 } | |
1266 | |
1267 // do unlocking if necessary | |
1268 { | |
1269 Label L; | |
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1270 __ movl(t, Address(method, Method::access_flags_offset())); |
0 | 1271 __ testl(t, JVM_ACC_SYNCHRONIZED); |
1272 __ jcc(Assembler::zero, L); | |
1273 // the code below should be shared with interpreter macro | |
1274 // assembler implementation | |
1275 { | |
1276 Label unlock; | |
1277 // BasicObjectLock will be first in list, since this is a | |
1278 // synchronized method. However, need to check that the object | |
1279 // has not been unlocked by an explicit monitorexit bytecode. | |
1280 const Address monitor(rbp, | |
1281 (intptr_t)(frame::interpreter_frame_initial_sp_offset * | |
1282 wordSize - sizeof(BasicObjectLock))); | |
1283 | |
1284 // monitor expect in c_rarg1 for slow unlock path | |
304 | 1285 __ lea(c_rarg1, monitor); // address of first monitor |
0 | 1286 |
304 | 1287 __ movptr(t, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
1288 __ testptr(t, t); | |
0 | 1289 __ jcc(Assembler::notZero, unlock); |
1290 | |
1291 // Entry already unlocked, need to throw exception | |
1292 __ MacroAssembler::call_VM(noreg, | |
1293 CAST_FROM_FN_PTR(address, | |
1294 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
1295 __ should_not_reach_here(); | |
1296 | |
1297 __ bind(unlock); | |
1298 __ unlock_object(c_rarg1); | |
1299 } | |
1300 __ bind(L); | |
1301 } | |
1302 | |
1303 // jvmti support | |
1304 // Note: This must happen _after_ handling/throwing any exceptions since | |
1305 // the exception handler code notifies the runtime of method exits | |
1306 // too. If this happens before, method entry/exit notifications are | |
1307 // not properly paired (was bug - gri 11/22/99). | |
1308 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
1309 | |
1310 // restore potential result in edx:eax, call result handler to | |
1311 // restore potential result in ST0 & handle result | |
1312 | |
1313 __ pop(ltos); | |
1314 __ pop(dtos); | |
1315 | |
304 | 1316 __ movptr(t, Address(rbp, |
1317 (frame::interpreter_frame_result_handler_offset) * wordSize)); | |
0 | 1318 __ call(t); |
1319 | |
1320 // remove activation | |
304 | 1321 __ movptr(t, Address(rbp, |
1322 frame::interpreter_frame_sender_sp_offset * | |
1323 wordSize)); // get sender sp | |
0 | 1324 __ leave(); // remove frame anchor |
304 | 1325 __ pop(rdi); // get return address |
1326 __ mov(rsp, t); // set sp to sender sp | |
0 | 1327 __ jmp(rdi); |
1328 | |
1329 if (inc_counter) { | |
1330 // Handle overflow of counter and compile method | |
1331 __ bind(invocation_counter_overflow); | |
1332 generate_counter_overflow(&continue_after_compile); | |
1333 } | |
1334 | |
1335 return entry_point; | |
1336 } | |
1337 | |
1338 // | |
1339 // Generic interpreted method entry to (asm) interpreter | |
1340 // | |
1341 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
1342 // determine code generation flags | |
1343 bool inc_counter = UseCompiler || CountCompiledCalls; | |
1344 | |
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1345 // ebx: Method* |
0 | 1346 // r13: sender sp |
1347 address entry_point = __ pc(); | |
1348 | |
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1349 const Address constMethod(rbx, Method::const_offset()); |
0 | 1350 const Address invocation_counter(rbx, |
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1351 Method::invocation_counter_offset() + |
0 | 1352 InvocationCounter::counter_offset()); |
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1353 const Address access_flags(rbx, Method::access_flags_offset()); |
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1354 const Address size_of_parameters(rdx, |
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1355 ConstMethod::size_of_parameters_offset()); |
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1356 const Address size_of_locals(rdx, ConstMethod::size_of_locals_offset()); |
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1357 |
0 | 1358 |
1359 // get parameter size (always needed) | |
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1360 __ movptr(rdx, constMethod); |
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1361 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 1362 |
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1363 // rbx: Method* |
0 | 1364 // rcx: size of parameters |
1365 // r13: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
1366 | |
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|
1367 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
0 | 1368 __ subl(rdx, rcx); // rdx = no. of additional locals |
1369 | |
1370 // YYY | |
1371 // __ incrementl(rdx); | |
1372 // __ andl(rdx, -2); | |
1373 | |
1374 // see if we've got enough room on the stack for locals plus overhead. | |
1375 generate_stack_overflow_check(); | |
1376 | |
1377 // get return address | |
304 | 1378 __ pop(rax); |
0 | 1379 |
1380 // compute beginning of parameters (r14) | |
304 | 1381 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
0 | 1382 |
1383 // rdx - # of additional locals | |
1384 // allocate space for locals | |
1385 // explicitly initialize locals | |
1386 { | |
1387 Label exit, loop; | |
1388 __ testl(rdx, rdx); | |
1389 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 | |
1390 __ bind(loop); | |
304 | 1391 __ push((int) NULL_WORD); // initialize local variables |
0 | 1392 __ decrementl(rdx); // until everything initialized |
1393 __ jcc(Assembler::greater, loop); | |
1394 __ bind(exit); | |
1395 } | |
1396 | |
1397 // (pre-)fetch invocation count | |
1398 if (inc_counter) { | |
1399 __ movl(rcx, invocation_counter); | |
1400 } | |
1401 // initialize fixed part of activation frame | |
1402 generate_fixed_frame(false); | |
1403 | |
1404 // make sure method is not native & not abstract | |
1405 #ifdef ASSERT | |
1406 __ movl(rax, access_flags); | |
1407 { | |
1408 Label L; | |
1409 __ testl(rax, JVM_ACC_NATIVE); | |
1410 __ jcc(Assembler::zero, L); | |
1411 __ stop("tried to execute native method as non-native"); | |
1412 __ bind(L); | |
1413 } | |
1414 { | |
1415 Label L; | |
1416 __ testl(rax, JVM_ACC_ABSTRACT); | |
1417 __ jcc(Assembler::zero, L); | |
1418 __ stop("tried to execute abstract method in interpreter"); | |
1419 __ bind(L); | |
1420 } | |
1421 #endif | |
1422 | |
1423 // Since at this point in the method invocation the exception | |
1424 // handler would try to exit the monitor of synchronized methods | |
1425 // which hasn't been entered yet, we set the thread local variable | |
1426 // _do_not_unlock_if_synchronized to true. The remove_activation | |
1427 // will check this flag. | |
1428 | |
1429 const Address do_not_unlock_if_synchronized(r15_thread, | |
1430 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
1431 __ movbool(do_not_unlock_if_synchronized, true); | |
1432 | |
1433 // increment invocation count & check for overflow | |
1434 Label invocation_counter_overflow; | |
1435 Label profile_method; | |
1436 Label profile_method_continue; | |
1437 if (inc_counter) { | |
1438 generate_counter_incr(&invocation_counter_overflow, | |
1439 &profile_method, | |
1440 &profile_method_continue); | |
1441 if (ProfileInterpreter) { | |
1442 __ bind(profile_method_continue); | |
1443 } | |
1444 } | |
1445 | |
1446 Label continue_after_compile; | |
1447 __ bind(continue_after_compile); | |
1448 | |
1449 // check for synchronized interpreted methods | |
1450 bang_stack_shadow_pages(false); | |
1451 | |
1452 // reset the _do_not_unlock_if_synchronized flag | |
1453 __ movbool(do_not_unlock_if_synchronized, false); | |
1454 | |
1455 // check for synchronized methods | |
1456 // Must happen AFTER invocation_counter check and stack overflow check, | |
1457 // so method is not locked if overflows. | |
1458 if (synchronized) { | |
1459 // Allocate monitor and lock method | |
1460 lock_method(); | |
1461 } else { | |
1462 // no synchronization necessary | |
1463 #ifdef ASSERT | |
1464 { | |
1465 Label L; | |
1466 __ movl(rax, access_flags); | |
1467 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
1468 __ jcc(Assembler::zero, L); | |
1469 __ stop("method needs synchronization"); | |
1470 __ bind(L); | |
1471 } | |
1472 #endif | |
1473 } | |
1474 | |
1475 // start execution | |
1476 #ifdef ASSERT | |
1477 { | |
1478 Label L; | |
1479 const Address monitor_block_top (rbp, | |
1480 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 1481 __ movptr(rax, monitor_block_top); |
1482 __ cmpptr(rax, rsp); | |
0 | 1483 __ jcc(Assembler::equal, L); |
1484 __ stop("broken stack frame setup in interpreter"); | |
1485 __ bind(L); | |
1486 } | |
1487 #endif | |
1488 | |
1489 // jvmti support | |
1490 __ notify_method_entry(); | |
1491 | |
1492 __ dispatch_next(vtos); | |
1493 | |
1494 // invocation counter overflow | |
1495 if (inc_counter) { | |
1496 if (ProfileInterpreter) { | |
1497 // We have decided to profile this method in the interpreter | |
1498 __ bind(profile_method); | |
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1499 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
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1500 __ set_method_data_pointer_for_bcp(); |
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1501 __ get_method(rbx); |
0 | 1502 __ jmp(profile_method_continue); |
1503 } | |
1504 // Handle overflow of counter and compile method | |
1505 __ bind(invocation_counter_overflow); | |
1506 generate_counter_overflow(&continue_after_compile); | |
1507 } | |
1508 | |
1509 return entry_point; | |
1510 } | |
1511 | |
1512 // Entry points | |
1513 // | |
1514 // Here we generate the various kind of entries into the interpreter. | |
1515 // The two main entry type are generic bytecode methods and native | |
1516 // call method. These both come in synchronized and non-synchronized | |
1517 // versions but the frame layout they create is very similar. The | |
1518 // other method entry types are really just special purpose entries | |
1519 // that are really entry and interpretation all in one. These are for | |
1520 // trivial methods like accessor, empty, or special math methods. | |
1521 // | |
1522 // When control flow reaches any of the entry types for the interpreter | |
1523 // the following holds -> | |
1524 // | |
1525 // Arguments: | |
1526 // | |
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1527 // rbx: Method* |
0 | 1528 // |
1529 // Stack layout immediately at entry | |
1530 // | |
1531 // [ return address ] <--- rsp | |
1532 // [ parameter n ] | |
1533 // ... | |
1534 // [ parameter 1 ] | |
1535 // [ expression stack ] (caller's java expression stack) | |
1536 | |
1537 // Assuming that we don't go to one of the trivial specialized entries | |
1538 // the stack will look like below when we are ready to execute the | |
1539 // first bytecode (or call the native routine). The register usage | |
1540 // will be as the template based interpreter expects (see | |
1541 // interpreter_amd64.hpp). | |
1542 // | |
1543 // local variables follow incoming parameters immediately; i.e. | |
1544 // the return address is moved to the end of the locals). | |
1545 // | |
1546 // [ monitor entry ] <--- rsp | |
1547 // ... | |
1548 // [ monitor entry ] | |
1549 // [ expr. stack bottom ] | |
1550 // [ saved r13 ] | |
1551 // [ current r14 ] | |
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1552 // [ Method* ] |
0 | 1553 // [ saved ebp ] <--- rbp |
1554 // [ return address ] | |
1555 // [ local variable m ] | |
1556 // ... | |
1557 // [ local variable 1 ] | |
1558 // [ parameter n ] | |
1559 // ... | |
1560 // [ parameter 1 ] <--- r14 | |
1561 | |
1562 address AbstractInterpreterGenerator::generate_method_entry( | |
1563 AbstractInterpreter::MethodKind kind) { | |
1564 // determine code generation flags | |
1565 bool synchronized = false; | |
1566 address entry_point = NULL; | |
1567 | |
1568 switch (kind) { | |
1569 case Interpreter::zerolocals : break; | |
1570 case Interpreter::zerolocals_synchronized: synchronized = true; break; | |
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1571 case Interpreter::native : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(false); break; |
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1572 case Interpreter::native_synchronized : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(true); break; |
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1573 case Interpreter::empty : entry_point = ((InterpreterGenerator*)this)->generate_empty_entry(); break; |
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1574 case Interpreter::accessor : entry_point = ((InterpreterGenerator*)this)->generate_accessor_entry(); break; |
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1575 case Interpreter::abstract : entry_point = ((InterpreterGenerator*)this)->generate_abstract_entry(); break; |
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1576 |
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1577 case Interpreter::java_lang_math_sin : // fall thru |
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1578 case Interpreter::java_lang_math_cos : // fall thru |
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1579 case Interpreter::java_lang_math_tan : // fall thru |
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1580 case Interpreter::java_lang_math_abs : // fall thru |
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1581 case Interpreter::java_lang_math_log : // fall thru |
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1582 case Interpreter::java_lang_math_log10 : // fall thru |
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1583 case Interpreter::java_lang_math_sqrt : // fall thru |
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1584 case Interpreter::java_lang_math_pow : // fall thru |
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1585 case Interpreter::java_lang_math_exp : entry_point = ((InterpreterGenerator*)this)->generate_math_entry(kind); break; |
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1586 case Interpreter::java_lang_ref_reference_get |
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1587 : entry_point = ((InterpreterGenerator*)this)->generate_Reference_get_entry(); break; |
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1588 default: |
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1589 fatal(err_msg("unexpected method kind: %d", kind)); |
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1590 break; |
0 | 1591 } |
1592 | |
1593 if (entry_point) { | |
1594 return entry_point; | |
1595 } | |
1596 | |
1597 return ((InterpreterGenerator*) this)-> | |
1598 generate_normal_entry(synchronized); | |
1599 } | |
1600 | |
1174
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1601 // These should never be compiled since the interpreter will prefer |
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1602 // the compiled version to the intrinsic version. |
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1603 bool AbstractInterpreter::can_be_compiled(methodHandle m) { |
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1604 switch (method_kind(m)) { |
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1605 case Interpreter::java_lang_math_sin : // fall thru |
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1606 case Interpreter::java_lang_math_cos : // fall thru |
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1607 case Interpreter::java_lang_math_tan : // fall thru |
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1608 case Interpreter::java_lang_math_abs : // fall thru |
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1609 case Interpreter::java_lang_math_log : // fall thru |
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1610 case Interpreter::java_lang_math_log10 : // fall thru |
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1611 case Interpreter::java_lang_math_sqrt : // fall thru |
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1612 case Interpreter::java_lang_math_pow : // fall thru |
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1613 case Interpreter::java_lang_math_exp : |
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1614 return false; |
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|
1615 default: |
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1616 return true; |
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|
1617 } |
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1618 } |
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1619 |
0 | 1620 // How much stack a method activation needs in words. |
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1621 int AbstractInterpreter::size_top_interpreter_activation(Method* method) { |
0 | 1622 const int entry_size = frame::interpreter_frame_monitor_size(); |
1623 | |
1624 // total overhead size: entry_size + (saved rbp thru expr stack | |
1625 // bottom). be sure to change this if you add/subtract anything | |
1626 // to/from the overhead area | |
1627 const int overhead_size = | |
1628 -(frame::interpreter_frame_initial_sp_offset) + entry_size; | |
1629 | |
1630 const int stub_code = frame::entry_frame_after_call_words; | |
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1631 const int extra_stack = Method::extra_stack_entries(); |
710 | 1632 const int method_stack = (method->max_locals() + method->max_stack() + extra_stack) * |
1506 | 1633 Interpreter::stackElementWords; |
0 | 1634 return (overhead_size + method_stack + stub_code); |
1635 } | |
1636 | |
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1637 int AbstractInterpreter::layout_activation(Method* method, |
0 | 1638 int tempcount, |
1639 int popframe_extra_args, | |
1640 int moncount, | |
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1641 int caller_actual_parameters, |
0 | 1642 int callee_param_count, |
1643 int callee_locals, | |
1644 frame* caller, | |
1645 frame* interpreter_frame, | |
1646 bool is_top_frame) { | |
1647 // Note: This calculation must exactly parallel the frame setup | |
1648 // in AbstractInterpreterGenerator::generate_method_entry. | |
1649 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
1650 // The frame interpreter_frame, if not NULL, is guaranteed to be the | |
1651 // right size, as determined by a previous call to this method. | |
1652 // It is also guaranteed to be walkable even though it is in a skeletal state | |
1653 | |
1654 // fixed size of an interpreter frame: | |
1506 | 1655 int max_locals = method->max_locals() * Interpreter::stackElementWords; |
0 | 1656 int extra_locals = (method->max_locals() - method->size_of_parameters()) * |
1506 | 1657 Interpreter::stackElementWords; |
0 | 1658 |
1659 int overhead = frame::sender_sp_offset - | |
1660 frame::interpreter_frame_initial_sp_offset; | |
1661 // Our locals were accounted for by the caller (or last_frame_adjust | |
1662 // on the transistion) Since the callee parameters already account | |
1663 // for the callee's params we only need to account for the extra | |
1664 // locals. | |
1665 int size = overhead + | |
1506 | 1666 (callee_locals - callee_param_count)*Interpreter::stackElementWords + |
0 | 1667 moncount * frame::interpreter_frame_monitor_size() + |
1506 | 1668 tempcount* Interpreter::stackElementWords + popframe_extra_args; |
0 | 1669 if (interpreter_frame != NULL) { |
1670 #ifdef ASSERT | |
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1671 if (!EnableInvokeDynamic) |
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1672 // @@@ FIXME: Should we correct interpreter_frame_sender_sp in the calling sequences? |
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1673 // Probably, since deoptimization doesn't work yet. |
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1674 assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable"); |
0 | 1675 assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)"); |
1676 #endif | |
1677 | |
1678 interpreter_frame->interpreter_frame_set_method(method); | |
1679 // NOTE the difference in using sender_sp and | |
1680 // interpreter_frame_sender_sp interpreter_frame_sender_sp is | |
1681 // the original sp of the caller (the unextended_sp) and | |
1682 // sender_sp is fp+16 XXX | |
1683 intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; | |
1684 | |
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1685 #ifdef ASSERT |
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1686 if (caller->is_interpreted_frame()) { |
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1687 assert(locals < caller->fp() + frame::interpreter_frame_initial_sp_offset, "bad placement"); |
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1688 } |
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1689 #endif |
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1690 |
0 | 1691 interpreter_frame->interpreter_frame_set_locals(locals); |
1692 BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); | |
1693 BasicObjectLock* monbot = montop - moncount; | |
1694 interpreter_frame->interpreter_frame_set_monitor_end(monbot); | |
1695 | |
1696 // Set last_sp | |
1697 intptr_t* esp = (intptr_t*) monbot - | |
1506 | 1698 tempcount*Interpreter::stackElementWords - |
0 | 1699 popframe_extra_args; |
1700 interpreter_frame->interpreter_frame_set_last_sp(esp); | |
1701 | |
1702 // All frames but the initial (oldest) interpreter frame we fill in have | |
1703 // a value for sender_sp that allows walking the stack but isn't | |
1704 // truly correct. Correct the value here. | |
1705 if (extra_locals != 0 && | |
1706 interpreter_frame->sender_sp() == | |
1707 interpreter_frame->interpreter_frame_sender_sp()) { | |
1708 interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + | |
1709 extra_locals); | |
1710 } | |
1711 *interpreter_frame->interpreter_frame_cache_addr() = | |
1712 method->constants()->cache(); | |
1713 } | |
1714 return size; | |
1715 } | |
1716 | |
1717 //----------------------------------------------------------------------------- | |
1718 // Exceptions | |
1719 | |
1720 void TemplateInterpreterGenerator::generate_throw_exception() { | |
1721 // Entry point in previous activation (i.e., if the caller was | |
1722 // interpreted) | |
1723 Interpreter::_rethrow_exception_entry = __ pc(); | |
1724 // Restore sp to interpreter_frame_last_sp even though we are going | |
1725 // to empty the expression stack for the exception processing. | |
304 | 1726 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 1727 // rax: exception |
1728 // rdx: return address/pc that threw exception | |
1729 __ restore_bcp(); // r13 points to call/send | |
1730 __ restore_locals(); | |
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1731 __ reinit_heapbase(); // restore r12 as heapbase. |
0 | 1732 // Entry point for exceptions thrown within interpreter code |
1733 Interpreter::_throw_exception_entry = __ pc(); | |
1734 // expression stack is undefined here | |
1735 // rax: exception | |
1736 // r13: exception bcp | |
1737 __ verify_oop(rax); | |
304 | 1738 __ mov(c_rarg1, rax); |
0 | 1739 |
1740 // expression stack must be empty before entering the VM in case of | |
1741 // an exception | |
1742 __ empty_expression_stack(); | |
1743 // find exception handler address and preserve exception oop | |
1744 __ call_VM(rdx, | |
1745 CAST_FROM_FN_PTR(address, | |
1746 InterpreterRuntime::exception_handler_for_exception), | |
1747 c_rarg1); | |
1748 // rax: exception handler entry point | |
1749 // rdx: preserved exception oop | |
1750 // r13: bcp for exception handler | |
1751 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
1752 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
1753 | |
1754 // If the exception is not handled in the current frame the frame is | |
1755 // removed and the exception is rethrown (i.e. exception | |
1756 // continuation is _rethrow_exception). | |
1757 // | |
1758 // Note: At this point the bci is still the bxi for the instruction | |
1759 // which caused the exception and the expression stack is | |
1760 // empty. Thus, for any VM calls at this point, GC will find a legal | |
1761 // oop map (with empty expression stack). | |
1762 | |
1763 // In current activation | |
1764 // tos: exception | |
1765 // esi: exception bcp | |
1766 | |
1767 // | |
1768 // JVMTI PopFrame support | |
1769 // | |
1770 | |
1771 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
1772 __ empty_expression_stack(); | |
1773 // Set the popframe_processing bit in pending_popframe_condition | |
1774 // indicating that we are currently handling popframe, so that | |
1775 // call_VMs that may happen later do not trigger new popframe | |
1776 // handling cycles. | |
1777 __ movl(rdx, Address(r15_thread, JavaThread::popframe_condition_offset())); | |
1778 __ orl(rdx, JavaThread::popframe_processing_bit); | |
1779 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), rdx); | |
1780 | |
1781 { | |
1782 // Check to see whether we are returning to a deoptimized frame. | |
1783 // (The PopFrame call ensures that the caller of the popped frame is | |
1784 // either interpreted or compiled and deoptimizes it if compiled.) | |
1785 // In this case, we can't call dispatch_next() after the frame is | |
1786 // popped, but instead must save the incoming arguments and restore | |
1787 // them after deoptimization has occurred. | |
1788 // | |
1789 // Note that we don't compare the return PC against the | |
1790 // deoptimization blob's unpack entry because of the presence of | |
1791 // adapter frames in C2. | |
1792 Label caller_not_deoptimized; | |
304 | 1793 __ movptr(c_rarg1, Address(rbp, frame::return_addr_offset * wordSize)); |
0 | 1794 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
1795 InterpreterRuntime::interpreter_contains), c_rarg1); | |
1796 __ testl(rax, rax); | |
1797 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
1798 | |
1799 // Compute size of arguments for saving when returning to | |
1800 // deoptimized caller | |
1801 __ get_method(rax); | |
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1802 __ movptr(rax, Address(rax, Method::const_offset())); |
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1803 __ load_unsigned_short(rax, Address(rax, in_bytes(ConstMethod:: |
0 | 1804 size_of_parameters_offset()))); |
1506 | 1805 __ shll(rax, Interpreter::logStackElementSize); |
0 | 1806 __ restore_locals(); // XXX do we need this? |
304 | 1807 __ subptr(r14, rax); |
1808 __ addptr(r14, wordSize); | |
0 | 1809 // Save these arguments |
1810 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, | |
1811 Deoptimization:: | |
1812 popframe_preserve_args), | |
1813 r15_thread, rax, r14); | |
1814 | |
1815 __ remove_activation(vtos, rdx, | |
1816 /* throw_monitor_exception */ false, | |
1817 /* install_monitor_exception */ false, | |
1818 /* notify_jvmdi */ false); | |
1819 | |
1820 // Inform deoptimization that it is responsible for restoring | |
1821 // these arguments | |
1822 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
1823 JavaThread::popframe_force_deopt_reexecution_bit); | |
1824 | |
1825 // Continue in deoptimization handler | |
1826 __ jmp(rdx); | |
1827 | |
1828 __ bind(caller_not_deoptimized); | |
1829 } | |
1830 | |
1831 __ remove_activation(vtos, rdx, /* rdx result (retaddr) is not used */ | |
1832 /* throw_monitor_exception */ false, | |
1833 /* install_monitor_exception */ false, | |
1834 /* notify_jvmdi */ false); | |
1835 | |
1836 // Finish with popframe handling | |
1837 // A previous I2C followed by a deoptimization might have moved the | |
1838 // outgoing arguments further up the stack. PopFrame expects the | |
1839 // mutations to those outgoing arguments to be preserved and other | |
1840 // constraints basically require this frame to look exactly as | |
1841 // though it had previously invoked an interpreted activation with | |
1842 // no space between the top of the expression stack (current | |
1843 // last_sp) and the top of stack. Rather than force deopt to | |
1844 // maintain this kind of invariant all the time we call a small | |
1845 // fixup routine to move the mutated arguments onto the top of our | |
1846 // expression stack if necessary. | |
304 | 1847 __ mov(c_rarg1, rsp); |
1848 __ movptr(c_rarg2, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
0 | 1849 // PC must point into interpreter here |
1850 __ set_last_Java_frame(noreg, rbp, __ pc()); | |
1851 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), r15_thread, c_rarg1, c_rarg2); | |
1852 __ reset_last_Java_frame(true, true); | |
1853 // Restore the last_sp and null it out | |
304 | 1854 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
1855 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); | |
0 | 1856 |
1857 __ restore_bcp(); // XXX do we need this? | |
1858 __ restore_locals(); // XXX do we need this? | |
1859 // The method data pointer was incremented already during | |
1860 // call profiling. We have to restore the mdp for the current bcp. | |
1861 if (ProfileInterpreter) { | |
1862 __ set_method_data_pointer_for_bcp(); | |
1863 } | |
1864 | |
1865 // Clear the popframe condition flag | |
1866 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
1867 JavaThread::popframe_inactive); | |
1868 | |
1869 __ dispatch_next(vtos); | |
1870 // end of PopFrame support | |
1871 | |
1872 Interpreter::_remove_activation_entry = __ pc(); | |
1873 | |
1874 // preserve exception over this code sequence | |
1875 __ pop_ptr(rax); | |
304 | 1876 __ movptr(Address(r15_thread, JavaThread::vm_result_offset()), rax); |
0 | 1877 // remove the activation (without doing throws on illegalMonitorExceptions) |
1878 __ remove_activation(vtos, rdx, false, true, false); | |
1879 // restore exception | |
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1880 __ get_vm_result(rax, r15_thread); |
0 | 1881 |
1882 // In between activations - previous activation type unknown yet | |
1883 // compute continuation point - the continuation point expects the | |
1884 // following registers set up: | |
1885 // | |
1886 // rax: exception | |
1887 // rdx: return address/pc that threw exception | |
1888 // rsp: expression stack of caller | |
1889 // rbp: ebp of caller | |
304 | 1890 __ push(rax); // save exception |
1891 __ push(rdx); // save return address | |
0 | 1892 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
1893 SharedRuntime::exception_handler_for_return_address), | |
1295 | 1894 r15_thread, rdx); |
304 | 1895 __ mov(rbx, rax); // save exception handler |
1896 __ pop(rdx); // restore return address | |
1897 __ pop(rax); // restore exception | |
0 | 1898 // Note that an "issuing PC" is actually the next PC after the call |
1899 __ jmp(rbx); // jump to exception | |
1900 // handler of caller | |
1901 } | |
1902 | |
1903 | |
1904 // | |
1905 // JVMTI ForceEarlyReturn support | |
1906 // | |
1907 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
1908 address entry = __ pc(); | |
1909 | |
1910 __ restore_bcp(); | |
1911 __ restore_locals(); | |
1912 __ empty_expression_stack(); | |
1913 __ load_earlyret_value(state); | |
1914 | |
304 | 1915 __ movptr(rdx, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
0 | 1916 Address cond_addr(rdx, JvmtiThreadState::earlyret_state_offset()); |
1917 | |
1918 // Clear the earlyret state | |
1919 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
1920 | |
1921 __ remove_activation(state, rsi, | |
1922 false, /* throw_monitor_exception */ | |
1923 false, /* install_monitor_exception */ | |
1924 true); /* notify_jvmdi */ | |
1925 __ jmp(rsi); | |
1926 | |
1927 return entry; | |
1928 } // end of ForceEarlyReturn support | |
1929 | |
1930 | |
1931 //----------------------------------------------------------------------------- | |
1932 // Helper for vtos entry point generation | |
1933 | |
1934 void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t, | |
1935 address& bep, | |
1936 address& cep, | |
1937 address& sep, | |
1938 address& aep, | |
1939 address& iep, | |
1940 address& lep, | |
1941 address& fep, | |
1942 address& dep, | |
1943 address& vep) { | |
1944 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
1945 Label L; | |
1946 aep = __ pc(); __ push_ptr(); __ jmp(L); | |
1947 fep = __ pc(); __ push_f(); __ jmp(L); | |
1948 dep = __ pc(); __ push_d(); __ jmp(L); | |
1949 lep = __ pc(); __ push_l(); __ jmp(L); | |
1950 bep = cep = sep = | |
1951 iep = __ pc(); __ push_i(); | |
1952 vep = __ pc(); | |
1953 __ bind(L); | |
1954 generate_and_dispatch(t); | |
1955 } | |
1956 | |
1957 | |
1958 //----------------------------------------------------------------------------- | |
1959 // Generation of individual instructions | |
1960 | |
1961 // helpers for generate_and_dispatch | |
1962 | |
1963 | |
1964 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
1965 : TemplateInterpreterGenerator(code) { | |
1966 generate_all(); // down here so it can be "virtual" | |
1967 } | |
1968 | |
1969 //----------------------------------------------------------------------------- | |
1970 | |
1971 // Non-product code | |
1972 #ifndef PRODUCT | |
1973 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
1974 address entry = __ pc(); | |
1975 | |
1976 __ push(state); | |
304 | 1977 __ push(c_rarg0); |
1978 __ push(c_rarg1); | |
1979 __ push(c_rarg2); | |
1980 __ push(c_rarg3); | |
1981 __ mov(c_rarg2, rax); // Pass itos | |
0 | 1982 #ifdef _WIN64 |
1983 __ movflt(xmm3, xmm0); // Pass ftos | |
1984 #endif | |
1985 __ call_VM(noreg, | |
1986 CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), | |
1987 c_rarg1, c_rarg2, c_rarg3); | |
304 | 1988 __ pop(c_rarg3); |
1989 __ pop(c_rarg2); | |
1990 __ pop(c_rarg1); | |
1991 __ pop(c_rarg0); | |
0 | 1992 __ pop(state); |
1993 __ ret(0); // return from result handler | |
1994 | |
1995 return entry; | |
1996 } | |
1997 | |
1998 void TemplateInterpreterGenerator::count_bytecode() { | |
1999 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); | |
2000 } | |
2001 | |
2002 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
2003 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); | |
2004 } | |
2005 | |
2006 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
2007 __ mov32(rbx, ExternalAddress((address) &BytecodePairHistogram::_index)); | |
2008 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
2009 __ orl(rbx, | |
2010 ((int) t->bytecode()) << | |
2011 BytecodePairHistogram::log2_number_of_codes); | |
2012 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
2013 __ lea(rscratch1, ExternalAddress((address) BytecodePairHistogram::_counters)); | |
2014 __ incrementl(Address(rscratch1, rbx, Address::times_4)); | |
2015 } | |
2016 | |
2017 | |
2018 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
2019 // Call a little run-time stub to avoid blow-up for each bytecode. | |
2020 // The run-time runtime saves the right registers, depending on | |
2021 // the tosca in-state for the given template. | |
2022 | |
2023 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
2024 "entry must have been generated"); | |
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2025 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 2026 __ andptr(rsp, -16); // align stack as required by ABI |
0 | 2027 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); |
304 | 2028 __ mov(rsp, r12); // restore sp |
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2029 __ reinit_heapbase(); |
0 | 2030 } |
2031 | |
2032 | |
2033 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
2034 Label L; | |
2035 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
2036 StopInterpreterAt); | |
2037 __ jcc(Assembler::notEqual, L); | |
2038 __ int3(); | |
2039 __ bind(L); | |
2040 } | |
2041 #endif // !PRODUCT | |
304 | 2042 #endif // ! CC_INTERP |