Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateInterpreter_x86_64.cpp @ 17877:17b2fbdb6637
8038297: Avoid placing CTI immediately following cbcond instruction on T4
Summary: Insert a nop between cbcond and CTI
Reviewed-by: kvn, twisti
author | iveresov |
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date | Thu, 10 Apr 2014 23:15:13 -0700 |
parents | 2100bf712e2a |
children | 0bf37f737702 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
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26 #include "asm/macroAssembler.hpp" |
1972 | 27 #include "interpreter/bytecodeHistogram.hpp" |
28 #include "interpreter/interpreter.hpp" | |
29 #include "interpreter/interpreterGenerator.hpp" | |
30 #include "interpreter/interpreterRuntime.hpp" | |
31 #include "interpreter/templateTable.hpp" | |
32 #include "oops/arrayOop.hpp" | |
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33 #include "oops/methodData.hpp" |
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34 #include "oops/method.hpp" |
1972 | 35 #include "oops/oop.inline.hpp" |
36 #include "prims/jvmtiExport.hpp" | |
37 #include "prims/jvmtiThreadState.hpp" | |
38 #include "runtime/arguments.hpp" | |
39 #include "runtime/deoptimization.hpp" | |
40 #include "runtime/frame.inline.hpp" | |
41 #include "runtime/sharedRuntime.hpp" | |
42 #include "runtime/stubRoutines.hpp" | |
43 #include "runtime/synchronizer.hpp" | |
44 #include "runtime/timer.hpp" | |
45 #include "runtime/vframeArray.hpp" | |
46 #include "utilities/debug.hpp" | |
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47 #include "utilities/macros.hpp" |
0 | 48 |
49 #define __ _masm-> | |
50 | |
304 | 51 #ifndef CC_INTERP |
52 | |
0 | 53 const int method_offset = frame::interpreter_frame_method_offset * wordSize; |
54 const int bci_offset = frame::interpreter_frame_bcx_offset * wordSize; | |
55 const int locals_offset = frame::interpreter_frame_locals_offset * wordSize; | |
56 | |
57 //----------------------------------------------------------------------------- | |
58 | |
59 address TemplateInterpreterGenerator::generate_StackOverflowError_handler() { | |
60 address entry = __ pc(); | |
61 | |
62 #ifdef ASSERT | |
63 { | |
64 Label L; | |
304 | 65 __ lea(rax, Address(rbp, |
66 frame::interpreter_frame_monitor_block_top_offset * | |
67 wordSize)); | |
68 __ cmpptr(rax, rsp); // rax = maximal rsp for current rbp (stack | |
69 // grows negative) | |
0 | 70 __ jcc(Assembler::aboveEqual, L); // check if frame is complete |
71 __ stop ("interpreter frame not set up"); | |
72 __ bind(L); | |
73 } | |
74 #endif // ASSERT | |
75 // Restore bcp under the assumption that the current frame is still | |
76 // interpreted | |
77 __ restore_bcp(); | |
78 | |
79 // expression stack must be empty before entering the VM if an | |
80 // exception happened | |
81 __ empty_expression_stack(); | |
82 // throw exception | |
83 __ call_VM(noreg, | |
84 CAST_FROM_FN_PTR(address, | |
85 InterpreterRuntime::throw_StackOverflowError)); | |
86 return entry; | |
87 } | |
88 | |
89 address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler( | |
90 const char* name) { | |
91 address entry = __ pc(); | |
92 // expression stack must be empty before entering the VM if an | |
93 // exception happened | |
94 __ empty_expression_stack(); | |
95 // setup parameters | |
96 // ??? convention: expect aberrant index in register ebx | |
97 __ lea(c_rarg1, ExternalAddress((address)name)); | |
98 __ call_VM(noreg, | |
99 CAST_FROM_FN_PTR(address, | |
100 InterpreterRuntime:: | |
101 throw_ArrayIndexOutOfBoundsException), | |
102 c_rarg1, rbx); | |
103 return entry; | |
104 } | |
105 | |
106 address TemplateInterpreterGenerator::generate_ClassCastException_handler() { | |
107 address entry = __ pc(); | |
108 | |
109 // object is at TOS | |
304 | 110 __ pop(c_rarg1); |
0 | 111 |
112 // expression stack must be empty before entering the VM if an | |
113 // exception happened | |
114 __ empty_expression_stack(); | |
115 | |
116 __ call_VM(noreg, | |
117 CAST_FROM_FN_PTR(address, | |
118 InterpreterRuntime:: | |
119 throw_ClassCastException), | |
120 c_rarg1); | |
121 return entry; | |
122 } | |
123 | |
124 address TemplateInterpreterGenerator::generate_exception_handler_common( | |
125 const char* name, const char* message, bool pass_oop) { | |
126 assert(!pass_oop || message == NULL, "either oop or message but not both"); | |
127 address entry = __ pc(); | |
128 if (pass_oop) { | |
129 // object is at TOS | |
304 | 130 __ pop(c_rarg2); |
0 | 131 } |
132 // expression stack must be empty before entering the VM if an | |
133 // exception happened | |
134 __ empty_expression_stack(); | |
135 // setup parameters | |
136 __ lea(c_rarg1, ExternalAddress((address)name)); | |
137 if (pass_oop) { | |
138 __ call_VM(rax, CAST_FROM_FN_PTR(address, | |
139 InterpreterRuntime:: | |
140 create_klass_exception), | |
141 c_rarg1, c_rarg2); | |
142 } else { | |
143 // kind of lame ExternalAddress can't take NULL because | |
144 // external_word_Relocation will assert. | |
145 if (message != NULL) { | |
146 __ lea(c_rarg2, ExternalAddress((address)message)); | |
147 } else { | |
148 __ movptr(c_rarg2, NULL_WORD); | |
149 } | |
150 __ call_VM(rax, | |
151 CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), | |
152 c_rarg1, c_rarg2); | |
153 } | |
154 // throw exception | |
155 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
156 return entry; | |
157 } | |
158 | |
159 | |
160 address TemplateInterpreterGenerator::generate_continuation_for(TosState state) { | |
161 address entry = __ pc(); | |
162 // NULL last_sp until next java call | |
304 | 163 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 164 __ dispatch_next(state); |
165 return entry; | |
166 } | |
167 | |
168 | |
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169 address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step, size_t index_size) { |
0 | 170 address entry = __ pc(); |
171 | |
172 // Restore stack bottom in case i2c adjusted stack | |
304 | 173 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
0 | 174 // and NULL it as marker that esp is now tos until next java call |
304 | 175 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 176 |
177 __ restore_bcp(); | |
178 __ restore_locals(); | |
304 | 179 |
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180 if (state == atos) { |
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181 Register mdp = rbx; |
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182 Register tmp = rcx; |
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183 __ profile_return_type(mdp, rax, tmp); |
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184 } |
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185 |
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186 const Register cache = rbx; |
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187 const Register index = rcx; |
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188 __ get_cache_and_index_at_bcp(cache, index, 1, index_size); |
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189 |
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190 const Register flags = cache; |
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191 __ movl(flags, Address(cache, index, Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset())); |
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192 __ andl(flags, ConstantPoolCacheEntry::parameter_size_mask); |
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193 __ lea(rsp, Address(rsp, flags, Interpreter::stackElementScale())); |
0 | 194 __ dispatch_next(state, step); |
1108 | 195 |
0 | 196 return entry; |
197 } | |
198 | |
199 | |
200 address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, | |
201 int step) { | |
202 address entry = __ pc(); | |
203 // NULL last_sp until next java call | |
304 | 204 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 205 __ restore_bcp(); |
206 __ restore_locals(); | |
207 // handle exceptions | |
208 { | |
209 Label L; | |
304 | 210 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
0 | 211 __ jcc(Assembler::zero, L); |
212 __ call_VM(noreg, | |
213 CAST_FROM_FN_PTR(address, | |
214 InterpreterRuntime::throw_pending_exception)); | |
215 __ should_not_reach_here(); | |
216 __ bind(L); | |
217 } | |
218 __ dispatch_next(state, step); | |
219 return entry; | |
220 } | |
221 | |
222 int AbstractInterpreter::BasicType_as_index(BasicType type) { | |
223 int i = 0; | |
224 switch (type) { | |
225 case T_BOOLEAN: i = 0; break; | |
226 case T_CHAR : i = 1; break; | |
227 case T_BYTE : i = 2; break; | |
228 case T_SHORT : i = 3; break; | |
229 case T_INT : i = 4; break; | |
230 case T_LONG : i = 5; break; | |
231 case T_VOID : i = 6; break; | |
232 case T_FLOAT : i = 7; break; | |
233 case T_DOUBLE : i = 8; break; | |
234 case T_OBJECT : i = 9; break; | |
235 case T_ARRAY : i = 9; break; | |
236 default : ShouldNotReachHere(); | |
237 } | |
238 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, | |
239 "index out of bounds"); | |
240 return i; | |
241 } | |
242 | |
243 | |
244 address TemplateInterpreterGenerator::generate_result_handler_for( | |
245 BasicType type) { | |
246 address entry = __ pc(); | |
247 switch (type) { | |
248 case T_BOOLEAN: __ c2bool(rax); break; | |
249 case T_CHAR : __ movzwl(rax, rax); break; | |
250 case T_BYTE : __ sign_extend_byte(rax); break; | |
251 case T_SHORT : __ sign_extend_short(rax); break; | |
252 case T_INT : /* nothing to do */ break; | |
253 case T_LONG : /* nothing to do */ break; | |
254 case T_VOID : /* nothing to do */ break; | |
255 case T_FLOAT : /* nothing to do */ break; | |
256 case T_DOUBLE : /* nothing to do */ break; | |
257 case T_OBJECT : | |
258 // retrieve result from frame | |
304 | 259 __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); |
0 | 260 // and verify it |
261 __ verify_oop(rax); | |
262 break; | |
263 default : ShouldNotReachHere(); | |
264 } | |
265 __ ret(0); // return from result handler | |
266 return entry; | |
267 } | |
268 | |
269 address TemplateInterpreterGenerator::generate_safept_entry_for( | |
270 TosState state, | |
271 address runtime_entry) { | |
272 address entry = __ pc(); | |
273 __ push(state); | |
274 __ call_VM(noreg, runtime_entry); | |
275 __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); | |
276 return entry; | |
277 } | |
278 | |
279 | |
280 | |
281 // Helpers for commoning out cases in the various type of method entries. | |
282 // | |
283 | |
284 | |
285 // increment invocation count & check for overflow | |
286 // | |
287 // Note: checking for negative value instead of overflow | |
288 // so we have a 'sticky' overflow test | |
289 // | |
290 // rbx: method | |
291 // ecx: invocation counter | |
292 // | |
293 void InterpreterGenerator::generate_counter_incr( | |
294 Label* overflow, | |
295 Label* profile_method, | |
296 Label* profile_method_continue) { | |
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297 Label done; |
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298 // Note: In tiered we increment either counters in Method* or in MDO depending if we're profiling or not. |
1783 | 299 if (TieredCompilation) { |
300 int increment = InvocationCounter::count_increment; | |
301 int mask = ((1 << Tier0InvokeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
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302 Label no_mdo; |
1783 | 303 if (ProfileInterpreter) { |
304 // Are we profiling? | |
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305 __ movptr(rax, Address(rbx, Method::method_data_offset())); |
1783 | 306 __ testptr(rax, rax); |
307 __ jccb(Assembler::zero, no_mdo); | |
308 // Increment counter in the MDO | |
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309 const Address mdo_invocation_counter(rax, in_bytes(MethodData::invocation_counter_offset()) + |
1783 | 310 in_bytes(InvocationCounter::counter_offset())); |
311 __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rcx, false, Assembler::zero, overflow); | |
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312 __ jmp(done); |
1783 | 313 } |
314 __ bind(no_mdo); | |
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315 // Increment counter in MethodCounters |
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316 const Address invocation_counter(rax, |
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317 MethodCounters::invocation_counter_offset() + |
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318 InvocationCounter::counter_offset()); |
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319 __ get_method_counters(rbx, rax, done); |
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320 __ increment_mask_and_jump(invocation_counter, increment, mask, rcx, |
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321 false, Assembler::zero, overflow); |
1783 | 322 __ bind(done); |
323 } else { | |
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324 const Address backedge_counter(rax, |
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325 MethodCounters::backedge_counter_offset() + |
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326 InvocationCounter::counter_offset()); |
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327 const Address invocation_counter(rax, |
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328 MethodCounters::invocation_counter_offset() + |
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329 InvocationCounter::counter_offset()); |
0 | 330 |
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331 __ get_method_counters(rbx, rax, done); |
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332 |
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333 if (ProfileInterpreter) { |
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334 __ incrementl(Address(rax, |
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335 MethodCounters::interpreter_invocation_counter_offset())); |
1783 | 336 } |
337 // Update standard invocation counters | |
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338 __ movl(rcx, invocation_counter); |
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339 __ incrementl(rcx, InvocationCounter::count_increment); |
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340 __ movl(invocation_counter, rcx); // save invocation count |
0 | 341 |
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342 __ movl(rax, backedge_counter); // load backedge counter |
1783 | 343 __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits |
0 | 344 |
1783 | 345 __ addl(rcx, rax); // add both counters |
0 | 346 |
1783 | 347 // profile_method is non-null only for interpreted method so |
348 // profile_method != NULL == !native_call | |
349 | |
350 if (ProfileInterpreter && profile_method != NULL) { | |
351 // Test to see if we should create a method data oop | |
352 __ cmp32(rcx, ExternalAddress((address)&InvocationCounter::InterpreterProfileLimit)); | |
353 __ jcc(Assembler::less, *profile_method_continue); | |
0 | 354 |
1783 | 355 // if no method data exists, go to profile_method |
356 __ test_method_data_pointer(rax, *profile_method); | |
357 } | |
358 | |
359 __ cmp32(rcx, ExternalAddress((address)&InvocationCounter::InterpreterInvocationLimit)); | |
360 __ jcc(Assembler::aboveEqual, *overflow); | |
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361 __ bind(done); |
0 | 362 } |
363 } | |
364 | |
365 void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { | |
366 | |
367 // Asm interpreter on entry | |
368 // r14 - locals | |
369 // r13 - bcp | |
370 // rbx - method | |
371 // edx - cpool --- DOES NOT APPEAR TO BE TRUE | |
372 // rbp - interpreter frame | |
373 | |
374 // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] | |
375 // Everything as it was on entry | |
376 // rdx is not restored. Doesn't appear to really be set. | |
377 | |
378 // InterpreterRuntime::frequency_counter_overflow takes two | |
379 // arguments, the first (thread) is passed by call_VM, the second | |
380 // indicates if the counter overflow occurs at a backwards branch | |
381 // (NULL bcp). We pass zero for it. The call returns the address | |
382 // of the verified entry point for the method or NULL if the | |
383 // compilation did not complete (either went background or bailed | |
384 // out). | |
385 __ movl(c_rarg1, 0); | |
386 __ call_VM(noreg, | |
387 CAST_FROM_FN_PTR(address, | |
388 InterpreterRuntime::frequency_counter_overflow), | |
389 c_rarg1); | |
390 | |
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391 __ movptr(rbx, Address(rbp, method_offset)); // restore Method* |
0 | 392 // Preserve invariant that r13/r14 contain bcp/locals of sender frame |
393 // and jump to the interpreted entry. | |
394 __ jmp(*do_continue, relocInfo::none); | |
395 } | |
396 | |
397 // See if we've got enough room on the stack for locals plus overhead. | |
398 // The expression stack grows down incrementally, so the normal guard | |
399 // page mechanism will work for that. | |
400 // | |
401 // NOTE: Since the additional locals are also always pushed (wasn't | |
402 // obvious in generate_method_entry) so the guard should work for them | |
403 // too. | |
404 // | |
405 // Args: | |
406 // rdx: number of additional locals this frame needs (what we must check) | |
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407 // rbx: Method* |
0 | 408 // |
409 // Kills: | |
410 // rax | |
411 void InterpreterGenerator::generate_stack_overflow_check(void) { | |
412 | |
413 // monitor entry size: see picture of stack set | |
414 // (generate_method_entry) and frame_amd64.hpp | |
415 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
416 | |
417 // total overhead size: entry_size + (saved rbp through expr stack | |
418 // bottom). be sure to change this if you add/subtract anything | |
419 // to/from the overhead area | |
420 const int overhead_size = | |
421 -(frame::interpreter_frame_initial_sp_offset * wordSize) + entry_size; | |
422 | |
423 const int page_size = os::vm_page_size(); | |
424 | |
425 Label after_frame_check; | |
426 | |
427 // see if the frame is greater than one page in size. If so, | |
428 // then we need to verify there is enough stack space remaining | |
429 // for the additional locals. | |
1506 | 430 __ cmpl(rdx, (page_size - overhead_size) / Interpreter::stackElementSize); |
0 | 431 __ jcc(Assembler::belowEqual, after_frame_check); |
432 | |
433 // compute rsp as if this were going to be the last frame on | |
434 // the stack before the red zone | |
435 | |
436 const Address stack_base(r15_thread, Thread::stack_base_offset()); | |
437 const Address stack_size(r15_thread, Thread::stack_size_offset()); | |
438 | |
439 // locals + overhead, in bytes | |
304 | 440 __ mov(rax, rdx); |
1506 | 441 __ shlptr(rax, Interpreter::logStackElementSize); // 2 slots per parameter. |
304 | 442 __ addptr(rax, overhead_size); |
0 | 443 |
444 #ifdef ASSERT | |
445 Label stack_base_okay, stack_size_okay; | |
446 // verify that thread stack base is non-zero | |
304 | 447 __ cmpptr(stack_base, (int32_t)NULL_WORD); |
0 | 448 __ jcc(Assembler::notEqual, stack_base_okay); |
449 __ stop("stack base is zero"); | |
450 __ bind(stack_base_okay); | |
451 // verify that thread stack size is non-zero | |
304 | 452 __ cmpptr(stack_size, 0); |
0 | 453 __ jcc(Assembler::notEqual, stack_size_okay); |
454 __ stop("stack size is zero"); | |
455 __ bind(stack_size_okay); | |
456 #endif | |
457 | |
458 // Add stack base to locals and subtract stack size | |
304 | 459 __ addptr(rax, stack_base); |
460 __ subptr(rax, stack_size); | |
0 | 461 |
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462 // Use the maximum number of pages we might bang. |
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463 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : |
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464 (StackRedPages+StackYellowPages); |
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465 |
0 | 466 // add in the red and yellow zone sizes |
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467 __ addptr(rax, max_pages * page_size); |
0 | 468 |
469 // check against the current stack bottom | |
304 | 470 __ cmpptr(rsp, rax); |
0 | 471 __ jcc(Assembler::above, after_frame_check); |
472 | |
4743 | 473 // Restore sender's sp as SP. This is necessary if the sender's |
474 // frame is an extended compiled frame (see gen_c2i_adapter()) | |
475 // and safer anyway in case of JSR292 adaptations. | |
476 | |
477 __ pop(rax); // return address must be moved if SP is changed | |
478 __ mov(rsp, r13); | |
479 __ push(rax); | |
480 | |
481 // Note: the restored frame is not necessarily interpreted. | |
482 // Use the shared runtime version of the StackOverflowError. | |
483 assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated"); | |
484 __ jump(ExternalAddress(StubRoutines::throw_StackOverflowError_entry())); | |
0 | 485 |
486 // all done with frame size check | |
487 __ bind(after_frame_check); | |
488 } | |
489 | |
490 // Allocate monitor and lock method (asm interpreter) | |
491 // | |
492 // Args: | |
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493 // rbx: Method* |
0 | 494 // r14: locals |
495 // | |
496 // Kills: | |
497 // rax | |
498 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, ...(param regs) | |
499 // rscratch1, rscratch2 (scratch regs) | |
500 void InterpreterGenerator::lock_method(void) { | |
501 // synchronize method | |
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502 const Address access_flags(rbx, Method::access_flags_offset()); |
0 | 503 const Address monitor_block_top( |
504 rbp, | |
505 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
506 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
507 | |
508 #ifdef ASSERT | |
509 { | |
510 Label L; | |
511 __ movl(rax, access_flags); | |
512 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
513 __ jcc(Assembler::notZero, L); | |
514 __ stop("method doesn't need synchronization"); | |
515 __ bind(L); | |
516 } | |
517 #endif // ASSERT | |
518 | |
519 // get synchronization object | |
520 { | |
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521 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
0 | 522 Label done; |
523 __ movl(rax, access_flags); | |
524 __ testl(rax, JVM_ACC_STATIC); | |
525 // get receiver (assume this is frequent case) | |
304 | 526 __ movptr(rax, Address(r14, Interpreter::local_offset_in_bytes(0))); |
0 | 527 __ jcc(Assembler::zero, done); |
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528 __ movptr(rax, Address(rbx, Method::const_offset())); |
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529 __ movptr(rax, Address(rax, ConstMethod::constants_offset())); |
304 | 530 __ movptr(rax, Address(rax, |
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531 ConstantPool::pool_holder_offset_in_bytes())); |
304 | 532 __ movptr(rax, Address(rax, mirror_offset)); |
0 | 533 |
534 #ifdef ASSERT | |
535 { | |
536 Label L; | |
304 | 537 __ testptr(rax, rax); |
0 | 538 __ jcc(Assembler::notZero, L); |
539 __ stop("synchronization object is NULL"); | |
540 __ bind(L); | |
541 } | |
542 #endif // ASSERT | |
543 | |
544 __ bind(done); | |
545 } | |
546 | |
547 // add space for monitor & lock | |
304 | 548 __ subptr(rsp, entry_size); // add space for a monitor entry |
549 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
0 | 550 // store object |
304 | 551 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); |
552 __ movptr(c_rarg1, rsp); // object address | |
0 | 553 __ lock_object(c_rarg1); |
554 } | |
555 | |
556 // Generate a fixed interpreter frame. This is identical setup for | |
557 // interpreted methods and for native methods hence the shared code. | |
558 // | |
559 // Args: | |
560 // rax: return address | |
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561 // rbx: Method* |
0 | 562 // r14: pointer to locals |
563 // r13: sender sp | |
564 // rdx: cp cache | |
565 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
566 // initialize fixed part of activation frame | |
304 | 567 __ push(rax); // save return address |
0 | 568 __ enter(); // save old & set new rbp |
304 | 569 __ push(r13); // set sender sp |
570 __ push((int)NULL_WORD); // leave last_sp as null | |
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571 __ movptr(r13, Address(rbx, Method::const_offset())); // get ConstMethod* |
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572 __ lea(r13, Address(r13, ConstMethod::codes_offset())); // get codebase |
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573 __ push(rbx); // save Method* |
0 | 574 if (ProfileInterpreter) { |
575 Label method_data_continue; | |
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576 __ movptr(rdx, Address(rbx, in_bytes(Method::method_data_offset()))); |
304 | 577 __ testptr(rdx, rdx); |
0 | 578 __ jcc(Assembler::zero, method_data_continue); |
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579 __ addptr(rdx, in_bytes(MethodData::data_offset())); |
0 | 580 __ bind(method_data_continue); |
304 | 581 __ push(rdx); // set the mdp (method data pointer) |
0 | 582 } else { |
304 | 583 __ push(0); |
0 | 584 } |
585 | |
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586 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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587 __ movptr(rdx, Address(rdx, ConstMethod::constants_offset())); |
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588 __ movptr(rdx, Address(rdx, ConstantPool::cache_offset_in_bytes())); |
304 | 589 __ push(rdx); // set constant pool cache |
590 __ push(r14); // set locals pointer | |
0 | 591 if (native_call) { |
304 | 592 __ push(0); // no bcp |
0 | 593 } else { |
304 | 594 __ push(r13); // set bcp |
0 | 595 } |
304 | 596 __ push(0); // reserve word for pointer to expression stack bottom |
597 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
0 | 598 } |
599 | |
600 // End of helpers | |
601 | |
304 | 602 // Various method entries |
603 //------------------------------------------------------------------------------------------------------------------------ | |
604 // | |
605 // | |
606 | |
607 // Call an accessor method (assuming it is resolved, otherwise drop | |
608 // into vanilla (slow path) entry | |
609 address InterpreterGenerator::generate_accessor_entry(void) { | |
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610 // rbx: Method* |
304 | 611 |
612 // r13: senderSP must preserver for slow path, set SP to it on fast path | |
613 | |
614 address entry_point = __ pc(); | |
615 Label xreturn_path; | |
616 | |
617 // do fastpath for resolved accessor methods | |
618 if (UseFastAccessorMethods) { | |
619 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites | |
620 // thereof; parameter size = 1 | |
621 // Note: We can only use this code if the getfield has been resolved | |
622 // and if we don't have a null-pointer exception => check for | |
623 // these conditions first and use slow path if necessary. | |
624 Label slow_path; | |
625 // If we need a safepoint check, generate full interpreter entry. | |
626 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
627 SafepointSynchronize::_not_synchronized); | |
628 | |
629 __ jcc(Assembler::notEqual, slow_path); | |
630 // rbx: method | |
631 __ movptr(rax, Address(rsp, wordSize)); | |
632 | |
633 // check if local 0 != NULL and read field | |
634 __ testptr(rax, rax); | |
635 __ jcc(Assembler::zero, slow_path); | |
636 | |
637 // read first instruction word and extract bytecode @ 1 and index @ 2 | |
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638 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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639 __ movptr(rdi, Address(rdx, ConstMethod::constants_offset())); |
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640 __ movl(rdx, Address(rdx, ConstMethod::codes_offset())); |
304 | 641 // Shift codes right to get the index on the right. |
642 // The bytecode fetched looks like <index><0xb4><0x2a> | |
643 __ shrl(rdx, 2 * BitsPerByte); | |
644 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
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645 __ movptr(rdi, Address(rdi, ConstantPool::cache_offset_in_bytes())); |
304 | 646 |
647 // rax: local 0 | |
648 // rbx: method | |
649 // rdx: constant pool cache index | |
650 // rdi: constant pool cache | |
651 | |
652 // check if getfield has been resolved and read constant pool cache entry | |
653 // check the validity of the cache entry by testing whether _indices field | |
654 // contains Bytecode::_getfield in b1 byte. | |
655 assert(in_words(ConstantPoolCacheEntry::size()) == 4, | |
656 "adjust shift below"); | |
657 __ movl(rcx, | |
658 Address(rdi, | |
659 rdx, | |
660 Address::times_8, | |
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661 ConstantPoolCache::base_offset() + |
304 | 662 ConstantPoolCacheEntry::indices_offset())); |
663 __ shrl(rcx, 2 * BitsPerByte); | |
664 __ andl(rcx, 0xFF); | |
665 __ cmpl(rcx, Bytecodes::_getfield); | |
666 __ jcc(Assembler::notEqual, slow_path); | |
667 | |
668 // Note: constant pool entry is not valid before bytecode is resolved | |
669 __ movptr(rcx, | |
670 Address(rdi, | |
671 rdx, | |
672 Address::times_8, | |
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673 ConstantPoolCache::base_offset() + |
304 | 674 ConstantPoolCacheEntry::f2_offset())); |
675 // edx: flags | |
676 __ movl(rdx, | |
677 Address(rdi, | |
678 rdx, | |
679 Address::times_8, | |
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680 ConstantPoolCache::base_offset() + |
304 | 681 ConstantPoolCacheEntry::flags_offset())); |
682 | |
683 Label notObj, notInt, notByte, notShort; | |
684 const Address field_address(rax, rcx, Address::times_1); | |
685 | |
686 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
687 // because they are different sizes. | |
688 // Use the type from the constant pool cache | |
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689 __ shrl(rdx, ConstantPoolCacheEntry::tos_state_shift); |
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690 // Make sure we don't need to mask edx after the above shift |
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691 ConstantPoolCacheEntry::verify_tos_state_shift(); |
304 | 692 |
693 __ cmpl(rdx, atos); | |
694 __ jcc(Assembler::notEqual, notObj); | |
695 // atos | |
696 __ load_heap_oop(rax, field_address); | |
697 __ jmp(xreturn_path); | |
698 | |
699 __ bind(notObj); | |
700 __ cmpl(rdx, itos); | |
701 __ jcc(Assembler::notEqual, notInt); | |
702 // itos | |
703 __ movl(rax, field_address); | |
704 __ jmp(xreturn_path); | |
705 | |
706 __ bind(notInt); | |
707 __ cmpl(rdx, btos); | |
708 __ jcc(Assembler::notEqual, notByte); | |
709 // btos | |
710 __ load_signed_byte(rax, field_address); | |
711 __ jmp(xreturn_path); | |
712 | |
713 __ bind(notByte); | |
714 __ cmpl(rdx, stos); | |
715 __ jcc(Assembler::notEqual, notShort); | |
716 // stos | |
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717 __ load_signed_short(rax, field_address); |
304 | 718 __ jmp(xreturn_path); |
719 | |
720 __ bind(notShort); | |
721 #ifdef ASSERT | |
722 Label okay; | |
723 __ cmpl(rdx, ctos); | |
724 __ jcc(Assembler::equal, okay); | |
725 __ stop("what type is this?"); | |
726 __ bind(okay); | |
727 #endif | |
728 // ctos | |
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729 __ load_unsigned_short(rax, field_address); |
304 | 730 |
731 __ bind(xreturn_path); | |
732 | |
733 // _ireturn/_areturn | |
734 __ pop(rdi); | |
735 __ mov(rsp, r13); | |
736 __ jmp(rdi); | |
737 __ ret(0); | |
738 | |
739 // generate a vanilla interpreter entry as the slow path | |
740 __ bind(slow_path); | |
741 (void) generate_normal_entry(false); | |
742 } else { | |
743 (void) generate_normal_entry(false); | |
744 } | |
745 | |
746 return entry_point; | |
747 } | |
748 | |
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749 // Method entry for java.lang.ref.Reference.get. |
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750 address InterpreterGenerator::generate_Reference_get_entry(void) { |
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751 #if INCLUDE_ALL_GCS |
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752 // Code: _aload_0, _getfield, _areturn |
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753 // parameter size = 1 |
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754 // |
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755 // The code that gets generated by this routine is split into 2 parts: |
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756 // 1. The "intrinsified" code for G1 (or any SATB based GC), |
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757 // 2. The slow path - which is an expansion of the regular method entry. |
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758 // |
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759 // Notes:- |
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760 // * In the G1 code we do not check whether we need to block for |
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761 // a safepoint. If G1 is enabled then we must execute the specialized |
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762 // code for Reference.get (except when the Reference object is null) |
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763 // so that we can log the value in the referent field with an SATB |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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764 // update buffer. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
765 // If the code for the getfield template is modified so that the |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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766 // G1 pre-barrier code is executed when the current method is |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
767 // Reference.get() then going through the normal method entry |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
768 // will be fine. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
769 // * The G1 code can, however, check the receiver object (the instance |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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770 // of java.lang.Reference) and jump to the slow path if null. If the |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
771 // Reference object is null then we obviously cannot fetch the referent |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
772 // and so we don't need to call the G1 pre-barrier. Thus we can use the |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
773 // regular method entry code to generate the NPE. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
774 // |
e1162778c1c8
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johnc
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|
775 // This code is based on generate_accessor_enty. |
e1162778c1c8
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johnc
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|
776 // |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
777 // rbx: Method* |
3249
e1162778c1c8
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johnc
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|
778 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
779 // r13: senderSP must preserve for slow path, set SP to it on fast path |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
780 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
781 address entry = __ pc(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
782 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
783 const int referent_offset = java_lang_ref_Reference::referent_offset; |
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johnc
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|
784 guarantee(referent_offset > 0, "referent offset not initialized"); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
785 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
786 if (UseG1GC) { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
787 Label slow_path; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
788 // rbx: method |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
789 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
790 // Check if local 0 != NULL |
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|
791 // If the receiver is null then it is OK to jump to the slow path. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
792 __ movptr(rax, Address(rsp, wordSize)); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
793 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
794 __ testptr(rax, rax); |
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johnc
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795 __ jcc(Assembler::zero, slow_path); |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
796 |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
797 // rax: local 0 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
798 // rbx: method (but can be used as scratch now) |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
799 // rdx: scratch |
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|
800 // rdi: scratch |
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johnc
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|
801 |
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johnc
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changeset
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802 // Generate the G1 pre-barrier code to log the value of |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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803 // the referent field in an SATB buffer. |
e1162778c1c8
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|
804 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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changeset
|
805 // Load the value of the referent field. |
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|
806 const Address field_address(rax, referent_offset); |
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|
807 __ load_heap_oop(rax, field_address); |
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johnc
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|
808 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
809 // Generate the G1 pre-barrier code to log the value of |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
810 // the referent field in an SATB buffer. |
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johnc
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811 __ g1_write_barrier_pre(noreg /* obj */, |
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812 rax /* pre_val */, |
e1162778c1c8
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|
813 r15_thread /* thread */, |
e1162778c1c8
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|
814 rbx /* tmp */, |
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|
815 true /* tosca_live */, |
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|
816 true /* expand_call */); |
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817 |
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johnc
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|
818 // _areturn |
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819 __ pop(rdi); // get return address |
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|
820 __ mov(rsp, r13); // set sp to sender sp |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
821 __ jmp(rdi); |
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|
822 __ ret(0); |
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|
823 |
e1162778c1c8
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johnc
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|
824 // generate a vanilla interpreter entry as the slow path |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
825 __ bind(slow_path); |
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|
826 (void) generate_normal_entry(false); |
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|
827 |
e1162778c1c8
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johnc
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|
828 return entry; |
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|
829 } |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7402
diff
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|
830 #endif // INCLUDE_ALL_GCS |
3249
e1162778c1c8
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|
831 |
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parents:
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|
832 // If G1 is not enabled then attempt to go through the accessor entry point |
e1162778c1c8
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|
833 // Reference.get is an accessor |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
834 return generate_accessor_entry(); |
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parents:
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|
835 } |
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johnc
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|
836 |
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|
837 /** |
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|
838 * Method entry for static native methods: |
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839 * int java.util.zip.CRC32.update(int crc, int b) |
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|
840 */ |
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|
841 address InterpreterGenerator::generate_CRC32_update_entry() { |
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842 if (UseCRC32Intrinsics) { |
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843 address entry = __ pc(); |
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844 |
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845 // rbx,: Method* |
12070
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|
846 // r13: senderSP must preserved for slow path, set SP to it on fast path |
afbe18ae0905
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|
847 // c_rarg0: scratch (rdi on non-Win64, rcx on Win64) |
afbe18ae0905
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bharadwaj
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848 // c_rarg1: scratch (rsi on non-Win64, rdx on Win64) |
11080
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849 |
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850 Label slow_path; |
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|
851 // If we need a safepoint check, generate full interpreter entry. |
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852 ExternalAddress state(SafepointSynchronize::address_of_state()); |
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853 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), |
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|
854 SafepointSynchronize::_not_synchronized); |
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855 __ jcc(Assembler::notEqual, slow_path); |
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856 |
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857 // We don't generate local frame and don't align stack because |
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858 // we call stub code and there is no safepoint on this path. |
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859 |
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860 // Load parameters |
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861 const Register crc = rax; // crc |
12070
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862 const Register val = c_rarg0; // source java byte value |
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863 const Register tbl = c_rarg1; // scratch |
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864 |
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865 // Arguments are reversed on java expression stack |
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866 __ movl(val, Address(rsp, wordSize)); // byte value |
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867 __ movl(crc, Address(rsp, 2*wordSize)); // Initial CRC |
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|
868 |
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869 __ lea(tbl, ExternalAddress(StubRoutines::crc_table_addr())); |
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870 __ notl(crc); // ~crc |
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|
871 __ update_byte_crc32(crc, val, tbl); |
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|
872 __ notl(crc); // ~crc |
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|
873 // result in rax |
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|
874 |
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|
875 // _areturn |
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|
876 __ pop(rdi); // get return address |
12070
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877 __ mov(rsp, r13); // set sp to sender sp |
11080
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|
878 __ jmp(rdi); |
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|
879 |
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880 // generate a vanilla native entry as the slow path |
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881 __ bind(slow_path); |
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882 |
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883 (void) generate_native_entry(false); |
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884 |
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885 return entry; |
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886 } |
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887 return generate_native_entry(false); |
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888 } |
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889 |
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890 /** |
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891 * Method entry for static native methods: |
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892 * int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int len) |
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893 * int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len) |
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894 */ |
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895 address InterpreterGenerator::generate_CRC32_updateBytes_entry(AbstractInterpreter::MethodKind kind) { |
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896 if (UseCRC32Intrinsics) { |
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897 address entry = __ pc(); |
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898 |
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899 // rbx,: Method* |
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900 // r13: senderSP must preserved for slow path, set SP to it on fast path |
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901 |
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902 Label slow_path; |
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903 // If we need a safepoint check, generate full interpreter entry. |
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904 ExternalAddress state(SafepointSynchronize::address_of_state()); |
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905 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), |
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906 SafepointSynchronize::_not_synchronized); |
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907 __ jcc(Assembler::notEqual, slow_path); |
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908 |
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909 // We don't generate local frame and don't align stack because |
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910 // we call stub code and there is no safepoint on this path. |
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911 |
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912 // Load parameters |
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913 const Register crc = c_rarg0; // crc |
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914 const Register buf = c_rarg1; // source java byte array address |
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915 const Register len = c_rarg2; // length |
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916 const Register off = len; // offset (never overlaps with 'len') |
11080
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917 |
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918 // Arguments are reversed on java expression stack |
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919 // Calculate address of start element |
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920 if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) { |
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921 __ movptr(buf, Address(rsp, 3*wordSize)); // long buf |
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922 __ movl2ptr(off, Address(rsp, 2*wordSize)); // offset |
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923 __ addq(buf, off); // + offset |
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924 __ movl(crc, Address(rsp, 5*wordSize)); // Initial CRC |
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925 } else { |
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926 __ movptr(buf, Address(rsp, 3*wordSize)); // byte[] array |
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927 __ addptr(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size |
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928 __ movl2ptr(off, Address(rsp, 2*wordSize)); // offset |
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929 __ addq(buf, off); // + offset |
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930 __ movl(crc, Address(rsp, 4*wordSize)); // Initial CRC |
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931 } |
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932 // Can now load 'len' since we're finished with 'off' |
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933 __ movl(len, Address(rsp, wordSize)); // Length |
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934 |
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935 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32()), crc, buf, len); |
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936 // result in rax |
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937 |
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938 // _areturn |
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939 __ pop(rdi); // get return address |
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940 __ mov(rsp, r13); // set sp to sender sp |
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941 __ jmp(rdi); |
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942 |
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943 // generate a vanilla native entry as the slow path |
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944 __ bind(slow_path); |
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945 |
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946 (void) generate_native_entry(false); |
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947 |
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948 return entry; |
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949 } |
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950 return generate_native_entry(false); |
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951 } |
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952 |
0 | 953 // Interpreter stub for calling a native method. (asm interpreter) |
954 // This sets up a somewhat different looking stack for calling the | |
955 // native method than the typical interpreter frame setup. | |
956 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
957 // determine code generation flags | |
958 bool inc_counter = UseCompiler || CountCompiledCalls; | |
959 | |
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960 // rbx: Method* |
0 | 961 // r13: sender sp |
962 | |
963 address entry_point = __ pc(); | |
964 | |
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965 const Address constMethod (rbx, Method::const_offset()); |
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966 const Address access_flags (rbx, Method::access_flags_offset()); |
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967 const Address size_of_parameters(rcx, ConstMethod:: |
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968 size_of_parameters_offset()); |
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969 |
0 | 970 |
971 // get parameter size (always needed) | |
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972 __ movptr(rcx, constMethod); |
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973 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 974 |
975 // native calls don't need the stack size check since they have no | |
976 // expression stack and the arguments are already on the stack and | |
977 // we only add a handful of words to the stack | |
978 | |
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979 // rbx: Method* |
0 | 980 // rcx: size of parameters |
981 // r13: sender sp | |
304 | 982 __ pop(rax); // get return address |
0 | 983 |
984 // for natives the size of locals is zero | |
985 | |
986 // compute beginning of parameters (r14) | |
304 | 987 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
0 | 988 |
989 // add 2 zero-initialized slots for native calls | |
990 // initialize result_handler slot | |
304 | 991 __ push((int) NULL_WORD); |
0 | 992 // slot for oop temp |
993 // (static native method holder mirror/jni oop result) | |
304 | 994 __ push((int) NULL_WORD); |
0 | 995 |
996 // initialize fixed part of activation frame | |
997 generate_fixed_frame(true); | |
998 | |
999 // make sure method is native & not abstract | |
1000 #ifdef ASSERT | |
1001 __ movl(rax, access_flags); | |
1002 { | |
1003 Label L; | |
1004 __ testl(rax, JVM_ACC_NATIVE); | |
1005 __ jcc(Assembler::notZero, L); | |
1006 __ stop("tried to execute non-native method as native"); | |
1007 __ bind(L); | |
1008 } | |
1009 { | |
1010 Label L; | |
1011 __ testl(rax, JVM_ACC_ABSTRACT); | |
1012 __ jcc(Assembler::zero, L); | |
1013 __ stop("tried to execute abstract method in interpreter"); | |
1014 __ bind(L); | |
1015 } | |
1016 #endif | |
1017 | |
1018 // Since at this point in the method invocation the exception handler | |
1019 // would try to exit the monitor of synchronized methods which hasn't | |
1020 // been entered yet, we set the thread local variable | |
1021 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
1022 // check this flag. | |
1023 | |
1024 const Address do_not_unlock_if_synchronized(r15_thread, | |
1025 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
1026 __ movbool(do_not_unlock_if_synchronized, true); | |
1027 | |
1028 // increment invocation count & check for overflow | |
1029 Label invocation_counter_overflow; | |
1030 if (inc_counter) { | |
1031 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
1032 } | |
1033 | |
1034 Label continue_after_compile; | |
1035 __ bind(continue_after_compile); | |
1036 | |
1037 bang_stack_shadow_pages(true); | |
1038 | |
1039 // reset the _do_not_unlock_if_synchronized flag | |
1040 __ movbool(do_not_unlock_if_synchronized, false); | |
1041 | |
1042 // check for synchronized methods | |
1043 // Must happen AFTER invocation_counter check and stack overflow check, | |
1044 // so method is not locked if overflows. | |
1045 if (synchronized) { | |
1046 lock_method(); | |
1047 } else { | |
1048 // no synchronization necessary | |
1049 #ifdef ASSERT | |
1050 { | |
1051 Label L; | |
1052 __ movl(rax, access_flags); | |
1053 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
1054 __ jcc(Assembler::zero, L); | |
1055 __ stop("method needs synchronization"); | |
1056 __ bind(L); | |
1057 } | |
1058 #endif | |
1059 } | |
1060 | |
1061 // start execution | |
1062 #ifdef ASSERT | |
1063 { | |
1064 Label L; | |
1065 const Address monitor_block_top(rbp, | |
1066 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 1067 __ movptr(rax, monitor_block_top); |
1068 __ cmpptr(rax, rsp); | |
0 | 1069 __ jcc(Assembler::equal, L); |
1070 __ stop("broken stack frame setup in interpreter"); | |
1071 __ bind(L); | |
1072 } | |
1073 #endif | |
1074 | |
1075 // jvmti support | |
1076 __ notify_method_entry(); | |
1077 | |
1078 // work registers | |
1079 const Register method = rbx; | |
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1080 const Register t = r11; |
0 | 1081 |
1082 // allocate space for parameters | |
1083 __ get_method(method); | |
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1084 __ movptr(t, Address(method, Method::const_offset())); |
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1085 __ load_unsigned_short(t, Address(t, ConstMethod::size_of_parameters_offset())); |
1506 | 1086 __ shll(t, Interpreter::logStackElementSize); |
0 | 1087 |
304 | 1088 __ subptr(rsp, t); |
1089 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows | |
605 | 1090 __ andptr(rsp, -16); // must be 16 byte boundary (see amd64 ABI) |
0 | 1091 |
1092 // get signature handler | |
1093 { | |
1094 Label L; | |
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1095 __ movptr(t, Address(method, Method::signature_handler_offset())); |
304 | 1096 __ testptr(t, t); |
0 | 1097 __ jcc(Assembler::notZero, L); |
1098 __ call_VM(noreg, | |
1099 CAST_FROM_FN_PTR(address, | |
1100 InterpreterRuntime::prepare_native_call), | |
1101 method); | |
1102 __ get_method(method); | |
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1103 __ movptr(t, Address(method, Method::signature_handler_offset())); |
0 | 1104 __ bind(L); |
1105 } | |
1106 | |
1107 // call signature handler | |
1108 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == r14, | |
1109 "adjust this code"); | |
1110 assert(InterpreterRuntime::SignatureHandlerGenerator::to() == rsp, | |
1111 "adjust this code"); | |
1112 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == rscratch1, | |
1113 "adjust this code"); | |
1114 | |
1115 // The generated handlers do not touch RBX (the method oop). | |
1116 // However, large signatures cannot be cached and are generated | |
1117 // each time here. The slow-path generator can do a GC on return, | |
1118 // so we must reload it after the call. | |
1119 __ call(t); | |
1120 __ get_method(method); // slow path can do a GC, reload RBX | |
1121 | |
1122 | |
1123 // result handler is in rax | |
1124 // set result handler | |
304 | 1125 __ movptr(Address(rbp, |
1126 (frame::interpreter_frame_result_handler_offset) * wordSize), | |
1127 rax); | |
0 | 1128 |
1129 // pass mirror handle if static call | |
1130 { | |
1131 Label L; | |
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1132 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
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1133 __ movl(t, Address(method, Method::access_flags_offset())); |
0 | 1134 __ testl(t, JVM_ACC_STATIC); |
1135 __ jcc(Assembler::zero, L); | |
1136 // get mirror | |
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1137 __ movptr(t, Address(method, Method::const_offset())); |
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1138 __ movptr(t, Address(t, ConstMethod::constants_offset())); |
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1139 __ movptr(t, Address(t, ConstantPool::pool_holder_offset_in_bytes())); |
304 | 1140 __ movptr(t, Address(t, mirror_offset)); |
0 | 1141 // copy mirror into activation frame |
304 | 1142 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), |
0 | 1143 t); |
1144 // pass handle to mirror | |
304 | 1145 __ lea(c_rarg1, |
1146 Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); | |
0 | 1147 __ bind(L); |
1148 } | |
1149 | |
1150 // get native function entry point | |
1151 { | |
1152 Label L; | |
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1153 __ movptr(rax, Address(method, Method::native_function_offset())); |
0 | 1154 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
1155 __ movptr(rscratch2, unsatisfied.addr()); | |
304 | 1156 __ cmpptr(rax, rscratch2); |
0 | 1157 __ jcc(Assembler::notEqual, L); |
1158 __ call_VM(noreg, | |
1159 CAST_FROM_FN_PTR(address, | |
1160 InterpreterRuntime::prepare_native_call), | |
1161 method); | |
1162 __ get_method(method); | |
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1163 __ movptr(rax, Address(method, Method::native_function_offset())); |
0 | 1164 __ bind(L); |
1165 } | |
1166 | |
1167 // pass JNIEnv | |
304 | 1168 __ lea(c_rarg0, Address(r15_thread, JavaThread::jni_environment_offset())); |
0 | 1169 |
1170 // It is enough that the pc() points into the right code | |
1171 // segment. It does not have to be the correct return pc. | |
1172 __ set_last_Java_frame(rsp, rbp, (address) __ pc()); | |
1173 | |
1174 // change thread state | |
1175 #ifdef ASSERT | |
1176 { | |
1177 Label L; | |
1178 __ movl(t, Address(r15_thread, JavaThread::thread_state_offset())); | |
1179 __ cmpl(t, _thread_in_Java); | |
1180 __ jcc(Assembler::equal, L); | |
1181 __ stop("Wrong thread state in native stub"); | |
1182 __ bind(L); | |
1183 } | |
1184 #endif | |
1185 | |
1186 // Change state to native | |
1187 | |
1188 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
1189 _thread_in_native); | |
1190 | |
1191 // Call the native method. | |
1192 __ call(rax); | |
1193 // result potentially in rax or xmm0 | |
1194 | |
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1195 // Verify or restore cpu control state after JNI call |
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1196 __ restore_cpu_control_state_after_jni(); |
0 | 1197 |
1198 // NOTE: The order of these pushes is known to frame::interpreter_frame_result | |
1199 // in order to extract the result of a method call. If the order of these | |
1200 // pushes change or anything else is added to the stack then the code in | |
1201 // interpreter_frame_result must also change. | |
1202 | |
1203 __ push(dtos); | |
1204 __ push(ltos); | |
1205 | |
1206 // change thread state | |
1207 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
1208 _thread_in_native_trans); | |
1209 | |
1210 if (os::is_MP()) { | |
1211 if (UseMembar) { | |
1212 // Force this write out before the read below | |
1213 __ membar(Assembler::Membar_mask_bits( | |
1214 Assembler::LoadLoad | Assembler::LoadStore | | |
1215 Assembler::StoreLoad | Assembler::StoreStore)); | |
1216 } else { | |
1217 // Write serialization page so VM thread can do a pseudo remote membar. | |
1218 // We use the current thread pointer to calculate a thread specific | |
1219 // offset to write to within the page. This minimizes bus traffic | |
1220 // due to cache line collision. | |
1221 __ serialize_memory(r15_thread, rscratch2); | |
1222 } | |
1223 } | |
1224 | |
1225 // check for safepoint operation in progress and/or pending suspend requests | |
1226 { | |
1227 Label Continue; | |
1228 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
1229 SafepointSynchronize::_not_synchronized); | |
1230 | |
1231 Label L; | |
1232 __ jcc(Assembler::notEqual, L); | |
1233 __ cmpl(Address(r15_thread, JavaThread::suspend_flags_offset()), 0); | |
1234 __ jcc(Assembler::equal, Continue); | |
1235 __ bind(L); | |
1236 | |
1237 // Don't use call_VM as it will see a possible pending exception | |
1238 // and forward it and never return here preventing us from | |
1239 // clearing _last_native_pc down below. Also can't use | |
1240 // call_VM_leaf either as it will check to see if r13 & r14 are | |
1241 // preserved and correspond to the bcp/locals pointers. So we do a | |
1242 // runtime call by hand. | |
1243 // | |
304 | 1244 __ mov(c_rarg0, r15_thread); |
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1245 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1246 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
1247 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1248 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans))); |
304 | 1249 __ mov(rsp, r12); // restore sp |
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1250 __ reinit_heapbase(); |
0 | 1251 __ bind(Continue); |
1252 } | |
1253 | |
1254 // change thread state | |
1255 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
1256 | |
1257 // reset_last_Java_frame | |
1258 __ reset_last_Java_frame(true, true); | |
1259 | |
1260 // reset handle block | |
304 | 1261 __ movptr(t, Address(r15_thread, JavaThread::active_handles_offset())); |
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1262 __ movl(Address(t, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD); |
0 | 1263 |
1264 // If result is an oop unbox and store it in frame where gc will see it | |
1265 // and result handler will pick it up | |
1266 | |
1267 { | |
1268 Label no_oop, store_result; | |
1269 __ lea(t, ExternalAddress(AbstractInterpreter::result_handler(T_OBJECT))); | |
304 | 1270 __ cmpptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
0 | 1271 __ jcc(Assembler::notEqual, no_oop); |
1272 // retrieve result | |
1273 __ pop(ltos); | |
304 | 1274 __ testptr(rax, rax); |
0 | 1275 __ jcc(Assembler::zero, store_result); |
304 | 1276 __ movptr(rax, Address(rax, 0)); |
0 | 1277 __ bind(store_result); |
304 | 1278 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize), rax); |
0 | 1279 // keep stack depth as expected by pushing oop which will eventually be discarde |
1280 __ push(ltos); | |
1281 __ bind(no_oop); | |
1282 } | |
1283 | |
1284 | |
1285 { | |
1286 Label no_reguard; | |
1287 __ cmpl(Address(r15_thread, JavaThread::stack_guard_state_offset()), | |
1288 JavaThread::stack_guard_yellow_disabled); | |
1289 __ jcc(Assembler::notEqual, no_reguard); | |
1290 | |
304 | 1291 __ pusha(); // XXX only save smashed registers |
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1292 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 1293 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
1294 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1295 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
304 | 1296 __ mov(rsp, r12); // restore sp |
1297 __ popa(); // XXX only restore smashed registers | |
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1298 __ reinit_heapbase(); |
0 | 1299 |
1300 __ bind(no_reguard); | |
1301 } | |
1302 | |
1303 | |
1304 // The method register is junk from after the thread_in_native transition | |
1305 // until here. Also can't call_VM until the bcp has been | |
1306 // restored. Need bcp for throwing exception below so get it now. | |
1307 __ get_method(method); | |
1308 | |
1309 // restore r13 to have legal interpreter frame, i.e., bci == 0 <=> | |
1310 // r13 == code_base() | |
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1311 __ movptr(r13, Address(method, Method::const_offset())); // get ConstMethod* |
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1312 __ lea(r13, Address(r13, ConstMethod::codes_offset())); // get codebase |
0 | 1313 // handle exceptions (exception handling will handle unlocking!) |
1314 { | |
1315 Label L; | |
304 | 1316 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
0 | 1317 __ jcc(Assembler::zero, L); |
1318 // Note: At some point we may want to unify this with the code | |
1319 // used in call_VM_base(); i.e., we should use the | |
1320 // StubRoutines::forward_exception code. For now this doesn't work | |
1321 // here because the rsp is not correctly set at this point. | |
1322 __ MacroAssembler::call_VM(noreg, | |
1323 CAST_FROM_FN_PTR(address, | |
1324 InterpreterRuntime::throw_pending_exception)); | |
1325 __ should_not_reach_here(); | |
1326 __ bind(L); | |
1327 } | |
1328 | |
1329 // do unlocking if necessary | |
1330 { | |
1331 Label L; | |
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1332 __ movl(t, Address(method, Method::access_flags_offset())); |
0 | 1333 __ testl(t, JVM_ACC_SYNCHRONIZED); |
1334 __ jcc(Assembler::zero, L); | |
1335 // the code below should be shared with interpreter macro | |
1336 // assembler implementation | |
1337 { | |
1338 Label unlock; | |
1339 // BasicObjectLock will be first in list, since this is a | |
1340 // synchronized method. However, need to check that the object | |
1341 // has not been unlocked by an explicit monitorexit bytecode. | |
1342 const Address monitor(rbp, | |
1343 (intptr_t)(frame::interpreter_frame_initial_sp_offset * | |
1344 wordSize - sizeof(BasicObjectLock))); | |
1345 | |
1346 // monitor expect in c_rarg1 for slow unlock path | |
304 | 1347 __ lea(c_rarg1, monitor); // address of first monitor |
0 | 1348 |
304 | 1349 __ movptr(t, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
1350 __ testptr(t, t); | |
0 | 1351 __ jcc(Assembler::notZero, unlock); |
1352 | |
1353 // Entry already unlocked, need to throw exception | |
1354 __ MacroAssembler::call_VM(noreg, | |
1355 CAST_FROM_FN_PTR(address, | |
1356 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
1357 __ should_not_reach_here(); | |
1358 | |
1359 __ bind(unlock); | |
1360 __ unlock_object(c_rarg1); | |
1361 } | |
1362 __ bind(L); | |
1363 } | |
1364 | |
1365 // jvmti support | |
1366 // Note: This must happen _after_ handling/throwing any exceptions since | |
1367 // the exception handler code notifies the runtime of method exits | |
1368 // too. If this happens before, method entry/exit notifications are | |
1369 // not properly paired (was bug - gri 11/22/99). | |
1370 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
1371 | |
1372 // restore potential result in edx:eax, call result handler to | |
1373 // restore potential result in ST0 & handle result | |
1374 | |
1375 __ pop(ltos); | |
1376 __ pop(dtos); | |
1377 | |
304 | 1378 __ movptr(t, Address(rbp, |
1379 (frame::interpreter_frame_result_handler_offset) * wordSize)); | |
0 | 1380 __ call(t); |
1381 | |
1382 // remove activation | |
304 | 1383 __ movptr(t, Address(rbp, |
1384 frame::interpreter_frame_sender_sp_offset * | |
1385 wordSize)); // get sender sp | |
0 | 1386 __ leave(); // remove frame anchor |
304 | 1387 __ pop(rdi); // get return address |
1388 __ mov(rsp, t); // set sp to sender sp | |
0 | 1389 __ jmp(rdi); |
1390 | |
1391 if (inc_counter) { | |
1392 // Handle overflow of counter and compile method | |
1393 __ bind(invocation_counter_overflow); | |
1394 generate_counter_overflow(&continue_after_compile); | |
1395 } | |
1396 | |
1397 return entry_point; | |
1398 } | |
1399 | |
1400 // | |
1401 // Generic interpreted method entry to (asm) interpreter | |
1402 // | |
1403 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
1404 // determine code generation flags | |
1405 bool inc_counter = UseCompiler || CountCompiledCalls; | |
1406 | |
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1407 // ebx: Method* |
0 | 1408 // r13: sender sp |
1409 address entry_point = __ pc(); | |
1410 | |
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1411 const Address constMethod(rbx, Method::const_offset()); |
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1412 const Address access_flags(rbx, Method::access_flags_offset()); |
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1413 const Address size_of_parameters(rdx, |
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1414 ConstMethod::size_of_parameters_offset()); |
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1415 const Address size_of_locals(rdx, ConstMethod::size_of_locals_offset()); |
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1416 |
0 | 1417 |
1418 // get parameter size (always needed) | |
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1419 __ movptr(rdx, constMethod); |
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1420 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 1421 |
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1422 // rbx: Method* |
0 | 1423 // rcx: size of parameters |
1424 // r13: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
1425 | |
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1426 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
0 | 1427 __ subl(rdx, rcx); // rdx = no. of additional locals |
1428 | |
1429 // YYY | |
1430 // __ incrementl(rdx); | |
1431 // __ andl(rdx, -2); | |
1432 | |
1433 // see if we've got enough room on the stack for locals plus overhead. | |
1434 generate_stack_overflow_check(); | |
1435 | |
1436 // get return address | |
304 | 1437 __ pop(rax); |
0 | 1438 |
1439 // compute beginning of parameters (r14) | |
304 | 1440 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
0 | 1441 |
1442 // rdx - # of additional locals | |
1443 // allocate space for locals | |
1444 // explicitly initialize locals | |
1445 { | |
1446 Label exit, loop; | |
1447 __ testl(rdx, rdx); | |
1448 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 | |
1449 __ bind(loop); | |
304 | 1450 __ push((int) NULL_WORD); // initialize local variables |
0 | 1451 __ decrementl(rdx); // until everything initialized |
1452 __ jcc(Assembler::greater, loop); | |
1453 __ bind(exit); | |
1454 } | |
1455 | |
1456 // initialize fixed part of activation frame | |
1457 generate_fixed_frame(false); | |
1458 | |
1459 // make sure method is not native & not abstract | |
1460 #ifdef ASSERT | |
1461 __ movl(rax, access_flags); | |
1462 { | |
1463 Label L; | |
1464 __ testl(rax, JVM_ACC_NATIVE); | |
1465 __ jcc(Assembler::zero, L); | |
1466 __ stop("tried to execute native method as non-native"); | |
1467 __ bind(L); | |
1468 } | |
1469 { | |
1470 Label L; | |
1471 __ testl(rax, JVM_ACC_ABSTRACT); | |
1472 __ jcc(Assembler::zero, L); | |
1473 __ stop("tried to execute abstract method in interpreter"); | |
1474 __ bind(L); | |
1475 } | |
1476 #endif | |
1477 | |
1478 // Since at this point in the method invocation the exception | |
1479 // handler would try to exit the monitor of synchronized methods | |
1480 // which hasn't been entered yet, we set the thread local variable | |
1481 // _do_not_unlock_if_synchronized to true. The remove_activation | |
1482 // will check this flag. | |
1483 | |
1484 const Address do_not_unlock_if_synchronized(r15_thread, | |
1485 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
1486 __ movbool(do_not_unlock_if_synchronized, true); | |
1487 | |
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1488 __ profile_parameters_type(rax, rcx, rdx); |
0 | 1489 // increment invocation count & check for overflow |
1490 Label invocation_counter_overflow; | |
1491 Label profile_method; | |
1492 Label profile_method_continue; | |
1493 if (inc_counter) { | |
1494 generate_counter_incr(&invocation_counter_overflow, | |
1495 &profile_method, | |
1496 &profile_method_continue); | |
1497 if (ProfileInterpreter) { | |
1498 __ bind(profile_method_continue); | |
1499 } | |
1500 } | |
1501 | |
1502 Label continue_after_compile; | |
1503 __ bind(continue_after_compile); | |
1504 | |
1505 // check for synchronized interpreted methods | |
1506 bang_stack_shadow_pages(false); | |
1507 | |
1508 // reset the _do_not_unlock_if_synchronized flag | |
1509 __ movbool(do_not_unlock_if_synchronized, false); | |
1510 | |
1511 // check for synchronized methods | |
1512 // Must happen AFTER invocation_counter check and stack overflow check, | |
1513 // so method is not locked if overflows. | |
1514 if (synchronized) { | |
1515 // Allocate monitor and lock method | |
1516 lock_method(); | |
1517 } else { | |
1518 // no synchronization necessary | |
1519 #ifdef ASSERT | |
1520 { | |
1521 Label L; | |
1522 __ movl(rax, access_flags); | |
1523 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
1524 __ jcc(Assembler::zero, L); | |
1525 __ stop("method needs synchronization"); | |
1526 __ bind(L); | |
1527 } | |
1528 #endif | |
1529 } | |
1530 | |
1531 // start execution | |
1532 #ifdef ASSERT | |
1533 { | |
1534 Label L; | |
1535 const Address monitor_block_top (rbp, | |
1536 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 1537 __ movptr(rax, monitor_block_top); |
1538 __ cmpptr(rax, rsp); | |
0 | 1539 __ jcc(Assembler::equal, L); |
1540 __ stop("broken stack frame setup in interpreter"); | |
1541 __ bind(L); | |
1542 } | |
1543 #endif | |
1544 | |
1545 // jvmti support | |
1546 __ notify_method_entry(); | |
1547 | |
1548 __ dispatch_next(vtos); | |
1549 | |
1550 // invocation counter overflow | |
1551 if (inc_counter) { | |
1552 if (ProfileInterpreter) { | |
1553 // We have decided to profile this method in the interpreter | |
1554 __ bind(profile_method); | |
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1555 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
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1556 __ set_method_data_pointer_for_bcp(); |
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1557 __ get_method(rbx); |
0 | 1558 __ jmp(profile_method_continue); |
1559 } | |
1560 // Handle overflow of counter and compile method | |
1561 __ bind(invocation_counter_overflow); | |
1562 generate_counter_overflow(&continue_after_compile); | |
1563 } | |
1564 | |
1565 return entry_point; | |
1566 } | |
1567 | |
1568 // Entry points | |
1569 // | |
1570 // Here we generate the various kind of entries into the interpreter. | |
1571 // The two main entry type are generic bytecode methods and native | |
1572 // call method. These both come in synchronized and non-synchronized | |
1573 // versions but the frame layout they create is very similar. The | |
1574 // other method entry types are really just special purpose entries | |
1575 // that are really entry and interpretation all in one. These are for | |
1576 // trivial methods like accessor, empty, or special math methods. | |
1577 // | |
1578 // When control flow reaches any of the entry types for the interpreter | |
1579 // the following holds -> | |
1580 // | |
1581 // Arguments: | |
1582 // | |
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1583 // rbx: Method* |
0 | 1584 // |
1585 // Stack layout immediately at entry | |
1586 // | |
1587 // [ return address ] <--- rsp | |
1588 // [ parameter n ] | |
1589 // ... | |
1590 // [ parameter 1 ] | |
1591 // [ expression stack ] (caller's java expression stack) | |
1592 | |
1593 // Assuming that we don't go to one of the trivial specialized entries | |
1594 // the stack will look like below when we are ready to execute the | |
1595 // first bytecode (or call the native routine). The register usage | |
1596 // will be as the template based interpreter expects (see | |
1597 // interpreter_amd64.hpp). | |
1598 // | |
1599 // local variables follow incoming parameters immediately; i.e. | |
1600 // the return address is moved to the end of the locals). | |
1601 // | |
1602 // [ monitor entry ] <--- rsp | |
1603 // ... | |
1604 // [ monitor entry ] | |
1605 // [ expr. stack bottom ] | |
1606 // [ saved r13 ] | |
1607 // [ current r14 ] | |
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1608 // [ Method* ] |
0 | 1609 // [ saved ebp ] <--- rbp |
1610 // [ return address ] | |
1611 // [ local variable m ] | |
1612 // ... | |
1613 // [ local variable 1 ] | |
1614 // [ parameter n ] | |
1615 // ... | |
1616 // [ parameter 1 ] <--- r14 | |
1617 | |
1618 address AbstractInterpreterGenerator::generate_method_entry( | |
1619 AbstractInterpreter::MethodKind kind) { | |
1620 // determine code generation flags | |
1621 bool synchronized = false; | |
1622 address entry_point = NULL; | |
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1623 InterpreterGenerator* ig_this = (InterpreterGenerator*)this; |
0 | 1624 |
1625 switch (kind) { | |
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1626 case Interpreter::zerolocals : break; |
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1627 case Interpreter::zerolocals_synchronized: synchronized = true; break; |
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1628 case Interpreter::native : entry_point = ig_this->generate_native_entry(false); break; |
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1629 case Interpreter::native_synchronized : entry_point = ig_this->generate_native_entry(true); break; |
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1630 case Interpreter::empty : entry_point = ig_this->generate_empty_entry(); break; |
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1631 case Interpreter::accessor : entry_point = ig_this->generate_accessor_entry(); break; |
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1632 case Interpreter::abstract : entry_point = ig_this->generate_abstract_entry(); break; |
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1633 |
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1634 case Interpreter::java_lang_math_sin : // fall thru |
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1635 case Interpreter::java_lang_math_cos : // fall thru |
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1636 case Interpreter::java_lang_math_tan : // fall thru |
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1637 case Interpreter::java_lang_math_abs : // fall thru |
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1638 case Interpreter::java_lang_math_log : // fall thru |
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1639 case Interpreter::java_lang_math_log10 : // fall thru |
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1640 case Interpreter::java_lang_math_sqrt : // fall thru |
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1641 case Interpreter::java_lang_math_pow : // fall thru |
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1642 case Interpreter::java_lang_math_exp : entry_point = ig_this->generate_math_entry(kind); break; |
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1643 case Interpreter::java_lang_ref_reference_get |
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1644 : entry_point = ig_this->generate_Reference_get_entry(); break; |
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1645 case Interpreter::java_util_zip_CRC32_update |
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1646 : entry_point = ig_this->generate_CRC32_update_entry(); break; |
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1647 case Interpreter::java_util_zip_CRC32_updateBytes |
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1648 : // fall thru |
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1649 case Interpreter::java_util_zip_CRC32_updateByteBuffer |
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1650 : entry_point = ig_this->generate_CRC32_updateBytes_entry(kind); break; |
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1651 default: |
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1652 fatal(err_msg("unexpected method kind: %d", kind)); |
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1653 break; |
0 | 1654 } |
1655 | |
1656 if (entry_point) { | |
1657 return entry_point; | |
1658 } | |
1659 | |
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1660 return ig_this->generate_normal_entry(synchronized); |
0 | 1661 } |
1662 | |
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1663 // These should never be compiled since the interpreter will prefer |
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1664 // the compiled version to the intrinsic version. |
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1665 bool AbstractInterpreter::can_be_compiled(methodHandle m) { |
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1666 switch (method_kind(m)) { |
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1667 case Interpreter::java_lang_math_sin : // fall thru |
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1668 case Interpreter::java_lang_math_cos : // fall thru |
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1669 case Interpreter::java_lang_math_tan : // fall thru |
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1670 case Interpreter::java_lang_math_abs : // fall thru |
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1671 case Interpreter::java_lang_math_log : // fall thru |
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1672 case Interpreter::java_lang_math_log10 : // fall thru |
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1673 case Interpreter::java_lang_math_sqrt : // fall thru |
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1674 case Interpreter::java_lang_math_pow : // fall thru |
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1675 case Interpreter::java_lang_math_exp : |
1174
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1676 return false; |
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|
1677 default: |
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1678 return true; |
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|
1679 } |
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1680 } |
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1681 |
0 | 1682 // How much stack a method activation needs in words. |
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1683 int AbstractInterpreter::size_top_interpreter_activation(Method* method) { |
0 | 1684 const int entry_size = frame::interpreter_frame_monitor_size(); |
1685 | |
1686 // total overhead size: entry_size + (saved rbp thru expr stack | |
1687 // bottom). be sure to change this if you add/subtract anything | |
1688 // to/from the overhead area | |
1689 const int overhead_size = | |
1690 -(frame::interpreter_frame_initial_sp_offset) + entry_size; | |
1691 | |
1692 const int stub_code = frame::entry_frame_after_call_words; | |
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1693 const int method_stack = (method->max_locals() + method->max_stack()) * |
1506 | 1694 Interpreter::stackElementWords; |
0 | 1695 return (overhead_size + method_stack + stub_code); |
1696 } | |
1697 | |
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1698 int AbstractInterpreter::layout_activation(Method* method, |
0 | 1699 int tempcount, |
1700 int popframe_extra_args, | |
1701 int moncount, | |
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1702 int caller_actual_parameters, |
0 | 1703 int callee_param_count, |
1704 int callee_locals, | |
1705 frame* caller, | |
1706 frame* interpreter_frame, | |
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1707 bool is_top_frame, |
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1708 bool is_bottom_frame) { |
0 | 1709 // Note: This calculation must exactly parallel the frame setup |
1710 // in AbstractInterpreterGenerator::generate_method_entry. | |
1711 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
1712 // The frame interpreter_frame, if not NULL, is guaranteed to be the | |
1713 // right size, as determined by a previous call to this method. | |
1714 // It is also guaranteed to be walkable even though it is in a skeletal state | |
1715 | |
1716 // fixed size of an interpreter frame: | |
1506 | 1717 int max_locals = method->max_locals() * Interpreter::stackElementWords; |
0 | 1718 int extra_locals = (method->max_locals() - method->size_of_parameters()) * |
1506 | 1719 Interpreter::stackElementWords; |
0 | 1720 |
1721 int overhead = frame::sender_sp_offset - | |
1722 frame::interpreter_frame_initial_sp_offset; | |
1723 // Our locals were accounted for by the caller (or last_frame_adjust | |
1724 // on the transistion) Since the callee parameters already account | |
1725 // for the callee's params we only need to account for the extra | |
1726 // locals. | |
1727 int size = overhead + | |
1506 | 1728 (callee_locals - callee_param_count)*Interpreter::stackElementWords + |
0 | 1729 moncount * frame::interpreter_frame_monitor_size() + |
1506 | 1730 tempcount* Interpreter::stackElementWords + popframe_extra_args; |
0 | 1731 if (interpreter_frame != NULL) { |
1732 #ifdef ASSERT | |
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1733 if (!EnableInvokeDynamic) |
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1734 // @@@ FIXME: Should we correct interpreter_frame_sender_sp in the calling sequences? |
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1735 // Probably, since deoptimization doesn't work yet. |
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|
1736 assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable"); |
0 | 1737 assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)"); |
1738 #endif | |
1739 | |
1740 interpreter_frame->interpreter_frame_set_method(method); | |
1741 // NOTE the difference in using sender_sp and | |
1742 // interpreter_frame_sender_sp interpreter_frame_sender_sp is | |
1743 // the original sp of the caller (the unextended_sp) and | |
1744 // sender_sp is fp+16 XXX | |
1745 intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; | |
1746 | |
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|
1747 #ifdef ASSERT |
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|
1748 if (caller->is_interpreted_frame()) { |
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|
1749 assert(locals < caller->fp() + frame::interpreter_frame_initial_sp_offset, "bad placement"); |
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1750 } |
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|
1751 #endif |
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|
1752 |
0 | 1753 interpreter_frame->interpreter_frame_set_locals(locals); |
1754 BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); | |
1755 BasicObjectLock* monbot = montop - moncount; | |
1756 interpreter_frame->interpreter_frame_set_monitor_end(monbot); | |
1757 | |
1758 // Set last_sp | |
1759 intptr_t* esp = (intptr_t*) monbot - | |
1506 | 1760 tempcount*Interpreter::stackElementWords - |
0 | 1761 popframe_extra_args; |
1762 interpreter_frame->interpreter_frame_set_last_sp(esp); | |
1763 | |
1764 // All frames but the initial (oldest) interpreter frame we fill in have | |
1765 // a value for sender_sp that allows walking the stack but isn't | |
1766 // truly correct. Correct the value here. | |
1767 if (extra_locals != 0 && | |
1768 interpreter_frame->sender_sp() == | |
1769 interpreter_frame->interpreter_frame_sender_sp()) { | |
1770 interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + | |
1771 extra_locals); | |
1772 } | |
1773 *interpreter_frame->interpreter_frame_cache_addr() = | |
1774 method->constants()->cache(); | |
1775 } | |
1776 return size; | |
1777 } | |
1778 | |
1779 //----------------------------------------------------------------------------- | |
1780 // Exceptions | |
1781 | |
1782 void TemplateInterpreterGenerator::generate_throw_exception() { | |
1783 // Entry point in previous activation (i.e., if the caller was | |
1784 // interpreted) | |
1785 Interpreter::_rethrow_exception_entry = __ pc(); | |
1786 // Restore sp to interpreter_frame_last_sp even though we are going | |
1787 // to empty the expression stack for the exception processing. | |
304 | 1788 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 1789 // rax: exception |
1790 // rdx: return address/pc that threw exception | |
1791 __ restore_bcp(); // r13 points to call/send | |
1792 __ restore_locals(); | |
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|
1793 __ reinit_heapbase(); // restore r12 as heapbase. |
0 | 1794 // Entry point for exceptions thrown within interpreter code |
1795 Interpreter::_throw_exception_entry = __ pc(); | |
1796 // expression stack is undefined here | |
1797 // rax: exception | |
1798 // r13: exception bcp | |
1799 __ verify_oop(rax); | |
304 | 1800 __ mov(c_rarg1, rax); |
0 | 1801 |
1802 // expression stack must be empty before entering the VM in case of | |
1803 // an exception | |
1804 __ empty_expression_stack(); | |
1805 // find exception handler address and preserve exception oop | |
1806 __ call_VM(rdx, | |
1807 CAST_FROM_FN_PTR(address, | |
1808 InterpreterRuntime::exception_handler_for_exception), | |
1809 c_rarg1); | |
1810 // rax: exception handler entry point | |
1811 // rdx: preserved exception oop | |
1812 // r13: bcp for exception handler | |
1813 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
1814 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
1815 | |
1816 // If the exception is not handled in the current frame the frame is | |
1817 // removed and the exception is rethrown (i.e. exception | |
1818 // continuation is _rethrow_exception). | |
1819 // | |
1820 // Note: At this point the bci is still the bxi for the instruction | |
1821 // which caused the exception and the expression stack is | |
1822 // empty. Thus, for any VM calls at this point, GC will find a legal | |
1823 // oop map (with empty expression stack). | |
1824 | |
1825 // In current activation | |
1826 // tos: exception | |
1827 // esi: exception bcp | |
1828 | |
1829 // | |
1830 // JVMTI PopFrame support | |
1831 // | |
1832 | |
1833 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
1834 __ empty_expression_stack(); | |
1835 // Set the popframe_processing bit in pending_popframe_condition | |
1836 // indicating that we are currently handling popframe, so that | |
1837 // call_VMs that may happen later do not trigger new popframe | |
1838 // handling cycles. | |
1839 __ movl(rdx, Address(r15_thread, JavaThread::popframe_condition_offset())); | |
1840 __ orl(rdx, JavaThread::popframe_processing_bit); | |
1841 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), rdx); | |
1842 | |
1843 { | |
1844 // Check to see whether we are returning to a deoptimized frame. | |
1845 // (The PopFrame call ensures that the caller of the popped frame is | |
1846 // either interpreted or compiled and deoptimizes it if compiled.) | |
1847 // In this case, we can't call dispatch_next() after the frame is | |
1848 // popped, but instead must save the incoming arguments and restore | |
1849 // them after deoptimization has occurred. | |
1850 // | |
1851 // Note that we don't compare the return PC against the | |
1852 // deoptimization blob's unpack entry because of the presence of | |
1853 // adapter frames in C2. | |
1854 Label caller_not_deoptimized; | |
304 | 1855 __ movptr(c_rarg1, Address(rbp, frame::return_addr_offset * wordSize)); |
0 | 1856 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
1857 InterpreterRuntime::interpreter_contains), c_rarg1); | |
1858 __ testl(rax, rax); | |
1859 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
1860 | |
1861 // Compute size of arguments for saving when returning to | |
1862 // deoptimized caller | |
1863 __ get_method(rax); | |
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1864 __ movptr(rax, Address(rax, Method::const_offset())); |
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1865 __ load_unsigned_short(rax, Address(rax, in_bytes(ConstMethod:: |
0 | 1866 size_of_parameters_offset()))); |
1506 | 1867 __ shll(rax, Interpreter::logStackElementSize); |
0 | 1868 __ restore_locals(); // XXX do we need this? |
304 | 1869 __ subptr(r14, rax); |
1870 __ addptr(r14, wordSize); | |
0 | 1871 // Save these arguments |
1872 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, | |
1873 Deoptimization:: | |
1874 popframe_preserve_args), | |
1875 r15_thread, rax, r14); | |
1876 | |
1877 __ remove_activation(vtos, rdx, | |
1878 /* throw_monitor_exception */ false, | |
1879 /* install_monitor_exception */ false, | |
1880 /* notify_jvmdi */ false); | |
1881 | |
1882 // Inform deoptimization that it is responsible for restoring | |
1883 // these arguments | |
1884 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
1885 JavaThread::popframe_force_deopt_reexecution_bit); | |
1886 | |
1887 // Continue in deoptimization handler | |
1888 __ jmp(rdx); | |
1889 | |
1890 __ bind(caller_not_deoptimized); | |
1891 } | |
1892 | |
1893 __ remove_activation(vtos, rdx, /* rdx result (retaddr) is not used */ | |
1894 /* throw_monitor_exception */ false, | |
1895 /* install_monitor_exception */ false, | |
1896 /* notify_jvmdi */ false); | |
1897 | |
1898 // Finish with popframe handling | |
1899 // A previous I2C followed by a deoptimization might have moved the | |
1900 // outgoing arguments further up the stack. PopFrame expects the | |
1901 // mutations to those outgoing arguments to be preserved and other | |
1902 // constraints basically require this frame to look exactly as | |
1903 // though it had previously invoked an interpreted activation with | |
1904 // no space between the top of the expression stack (current | |
1905 // last_sp) and the top of stack. Rather than force deopt to | |
1906 // maintain this kind of invariant all the time we call a small | |
1907 // fixup routine to move the mutated arguments onto the top of our | |
1908 // expression stack if necessary. | |
304 | 1909 __ mov(c_rarg1, rsp); |
1910 __ movptr(c_rarg2, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
0 | 1911 // PC must point into interpreter here |
1912 __ set_last_Java_frame(noreg, rbp, __ pc()); | |
1913 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), r15_thread, c_rarg1, c_rarg2); | |
1914 __ reset_last_Java_frame(true, true); | |
1915 // Restore the last_sp and null it out | |
304 | 1916 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
1917 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); | |
0 | 1918 |
1919 __ restore_bcp(); // XXX do we need this? | |
1920 __ restore_locals(); // XXX do we need this? | |
1921 // The method data pointer was incremented already during | |
1922 // call profiling. We have to restore the mdp for the current bcp. | |
1923 if (ProfileInterpreter) { | |
1924 __ set_method_data_pointer_for_bcp(); | |
1925 } | |
1926 | |
1927 // Clear the popframe condition flag | |
1928 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
1929 JavaThread::popframe_inactive); | |
1930 | |
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1931 #if INCLUDE_JVMTI |
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1932 if (EnableInvokeDynamic) { |
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1933 Label L_done; |
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1934 const Register local0 = r14; |
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1935 |
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1936 __ cmpb(Address(r13, 0), Bytecodes::_invokestatic); |
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1937 __ jcc(Assembler::notEqual, L_done); |
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1938 |
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1939 // The member name argument must be restored if _invokestatic is re-executed after a PopFrame call. |
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1940 // Detect such a case in the InterpreterRuntime function and return the member name argument, or NULL. |
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1941 |
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1942 __ get_method(rdx); |
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1943 __ movptr(rax, Address(local0, 0)); |
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1944 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::member_name_arg_or_null), rax, rdx, r13); |
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1945 |
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1946 __ testptr(rax, rax); |
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1947 __ jcc(Assembler::zero, L_done); |
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1948 |
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1949 __ movptr(Address(rbx, 0), rax); |
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1950 __ bind(L_done); |
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1951 } |
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1952 #endif // INCLUDE_JVMTI |
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1953 |
0 | 1954 __ dispatch_next(vtos); |
1955 // end of PopFrame support | |
1956 | |
1957 Interpreter::_remove_activation_entry = __ pc(); | |
1958 | |
1959 // preserve exception over this code sequence | |
1960 __ pop_ptr(rax); | |
304 | 1961 __ movptr(Address(r15_thread, JavaThread::vm_result_offset()), rax); |
0 | 1962 // remove the activation (without doing throws on illegalMonitorExceptions) |
1963 __ remove_activation(vtos, rdx, false, true, false); | |
1964 // restore exception | |
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1965 __ get_vm_result(rax, r15_thread); |
0 | 1966 |
1967 // In between activations - previous activation type unknown yet | |
1968 // compute continuation point - the continuation point expects the | |
1969 // following registers set up: | |
1970 // | |
1971 // rax: exception | |
1972 // rdx: return address/pc that threw exception | |
1973 // rsp: expression stack of caller | |
1974 // rbp: ebp of caller | |
304 | 1975 __ push(rax); // save exception |
1976 __ push(rdx); // save return address | |
0 | 1977 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
1978 SharedRuntime::exception_handler_for_return_address), | |
1295 | 1979 r15_thread, rdx); |
304 | 1980 __ mov(rbx, rax); // save exception handler |
1981 __ pop(rdx); // restore return address | |
1982 __ pop(rax); // restore exception | |
0 | 1983 // Note that an "issuing PC" is actually the next PC after the call |
1984 __ jmp(rbx); // jump to exception | |
1985 // handler of caller | |
1986 } | |
1987 | |
1988 | |
1989 // | |
1990 // JVMTI ForceEarlyReturn support | |
1991 // | |
1992 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
1993 address entry = __ pc(); | |
1994 | |
1995 __ restore_bcp(); | |
1996 __ restore_locals(); | |
1997 __ empty_expression_stack(); | |
1998 __ load_earlyret_value(state); | |
1999 | |
304 | 2000 __ movptr(rdx, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
0 | 2001 Address cond_addr(rdx, JvmtiThreadState::earlyret_state_offset()); |
2002 | |
2003 // Clear the earlyret state | |
2004 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
2005 | |
2006 __ remove_activation(state, rsi, | |
2007 false, /* throw_monitor_exception */ | |
2008 false, /* install_monitor_exception */ | |
2009 true); /* notify_jvmdi */ | |
2010 __ jmp(rsi); | |
2011 | |
2012 return entry; | |
2013 } // end of ForceEarlyReturn support | |
2014 | |
2015 | |
2016 //----------------------------------------------------------------------------- | |
2017 // Helper for vtos entry point generation | |
2018 | |
2019 void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t, | |
2020 address& bep, | |
2021 address& cep, | |
2022 address& sep, | |
2023 address& aep, | |
2024 address& iep, | |
2025 address& lep, | |
2026 address& fep, | |
2027 address& dep, | |
2028 address& vep) { | |
2029 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
2030 Label L; | |
2031 aep = __ pc(); __ push_ptr(); __ jmp(L); | |
2032 fep = __ pc(); __ push_f(); __ jmp(L); | |
2033 dep = __ pc(); __ push_d(); __ jmp(L); | |
2034 lep = __ pc(); __ push_l(); __ jmp(L); | |
2035 bep = cep = sep = | |
2036 iep = __ pc(); __ push_i(); | |
2037 vep = __ pc(); | |
2038 __ bind(L); | |
2039 generate_and_dispatch(t); | |
2040 } | |
2041 | |
2042 | |
2043 //----------------------------------------------------------------------------- | |
2044 // Generation of individual instructions | |
2045 | |
2046 // helpers for generate_and_dispatch | |
2047 | |
2048 | |
2049 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
2050 : TemplateInterpreterGenerator(code) { | |
2051 generate_all(); // down here so it can be "virtual" | |
2052 } | |
2053 | |
2054 //----------------------------------------------------------------------------- | |
2055 | |
2056 // Non-product code | |
2057 #ifndef PRODUCT | |
2058 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
2059 address entry = __ pc(); | |
2060 | |
2061 __ push(state); | |
304 | 2062 __ push(c_rarg0); |
2063 __ push(c_rarg1); | |
2064 __ push(c_rarg2); | |
2065 __ push(c_rarg3); | |
2066 __ mov(c_rarg2, rax); // Pass itos | |
0 | 2067 #ifdef _WIN64 |
2068 __ movflt(xmm3, xmm0); // Pass ftos | |
2069 #endif | |
2070 __ call_VM(noreg, | |
2071 CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), | |
2072 c_rarg1, c_rarg2, c_rarg3); | |
304 | 2073 __ pop(c_rarg3); |
2074 __ pop(c_rarg2); | |
2075 __ pop(c_rarg1); | |
2076 __ pop(c_rarg0); | |
0 | 2077 __ pop(state); |
2078 __ ret(0); // return from result handler | |
2079 | |
2080 return entry; | |
2081 } | |
2082 | |
2083 void TemplateInterpreterGenerator::count_bytecode() { | |
2084 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); | |
2085 } | |
2086 | |
2087 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
2088 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); | |
2089 } | |
2090 | |
2091 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
2092 __ mov32(rbx, ExternalAddress((address) &BytecodePairHistogram::_index)); | |
2093 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
2094 __ orl(rbx, | |
2095 ((int) t->bytecode()) << | |
2096 BytecodePairHistogram::log2_number_of_codes); | |
2097 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
2098 __ lea(rscratch1, ExternalAddress((address) BytecodePairHistogram::_counters)); | |
2099 __ incrementl(Address(rscratch1, rbx, Address::times_4)); | |
2100 } | |
2101 | |
2102 | |
2103 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
2104 // Call a little run-time stub to avoid blow-up for each bytecode. | |
2105 // The run-time runtime saves the right registers, depending on | |
2106 // the tosca in-state for the given template. | |
2107 | |
2108 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
2109 "entry must have been generated"); | |
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2110 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
304 | 2111 __ andptr(rsp, -16); // align stack as required by ABI |
0 | 2112 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); |
304 | 2113 __ mov(rsp, r12); // restore sp |
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2114 __ reinit_heapbase(); |
0 | 2115 } |
2116 | |
2117 | |
2118 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
2119 Label L; | |
2120 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
2121 StopInterpreterAt); | |
2122 __ jcc(Assembler::notEqual, L); | |
2123 __ int3(); | |
2124 __ bind(L); | |
2125 } | |
2126 #endif // !PRODUCT | |
304 | 2127 #endif // ! CC_INTERP |