Mercurial > hg > graal-jvmci-8
annotate src/cpu/x86/vm/templateInterpreter_x86_32.cpp @ 24106:1439a6614a10
8174957: [JVMCI] jaotc is broken in Xcomp mode
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 15 Feb 2017 15:36:48 +0100 |
parents | ca5c97226d1c |
children | 0e0a4ebf09d7 |
rev | line source |
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0 | 1 /* |
23614 | 2 * Copyright (c) 1997, 2016, 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 | |
51 | |
52 #ifndef CC_INTERP | |
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 // Note: There should be a minimal interpreter frame set up when stack | |
63 // overflow occurs since we check explicitly for it now. | |
64 // | |
65 #ifdef ASSERT | |
66 { Label L; | |
304 | 67 __ lea(rax, Address(rbp, |
0 | 68 frame::interpreter_frame_monitor_block_top_offset * wordSize)); |
304 | 69 __ cmpptr(rax, rsp); // rax, = maximal rsp for current rbp, |
0 | 70 // (stack grows negative) |
71 __ jcc(Assembler::aboveEqual, L); // check if frame is complete | |
72 __ stop ("interpreter frame not set up"); | |
73 __ bind(L); | |
74 } | |
75 #endif // ASSERT | |
76 // Restore bcp under the assumption that the current frame is still | |
77 // interpreted | |
78 __ restore_bcp(); | |
79 | |
80 // expression stack must be empty before entering the VM if an exception | |
81 // happened | |
82 __ empty_expression_stack(); | |
83 __ empty_FPU_stack(); | |
84 // throw exception | |
85 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_StackOverflowError)); | |
86 return entry; | |
87 } | |
88 | |
89 address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(const char* name) { | |
90 address entry = __ pc(); | |
91 // expression stack must be empty before entering the VM if an exception happened | |
92 __ empty_expression_stack(); | |
93 __ empty_FPU_stack(); | |
94 // setup parameters | |
95 // ??? convention: expect aberrant index in register rbx, | |
96 __ lea(rax, ExternalAddress((address)name)); | |
97 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException), rax, rbx); | |
98 return entry; | |
99 } | |
100 | |
101 address TemplateInterpreterGenerator::generate_ClassCastException_handler() { | |
102 address entry = __ pc(); | |
103 // object is at TOS | |
304 | 104 __ pop(rax); |
0 | 105 // expression stack must be empty before entering the VM if an exception |
106 // happened | |
107 __ empty_expression_stack(); | |
108 __ empty_FPU_stack(); | |
109 __ call_VM(noreg, | |
110 CAST_FROM_FN_PTR(address, | |
111 InterpreterRuntime::throw_ClassCastException), | |
112 rax); | |
113 return entry; | |
114 } | |
115 | |
116 address TemplateInterpreterGenerator::generate_exception_handler_common(const char* name, const char* message, bool pass_oop) { | |
117 assert(!pass_oop || message == NULL, "either oop or message but not both"); | |
118 address entry = __ pc(); | |
119 if (pass_oop) { | |
120 // object is at TOS | |
304 | 121 __ pop(rbx); |
0 | 122 } |
123 // expression stack must be empty before entering the VM if an exception happened | |
124 __ empty_expression_stack(); | |
125 __ empty_FPU_stack(); | |
126 // setup parameters | |
127 __ lea(rax, ExternalAddress((address)name)); | |
128 if (pass_oop) { | |
129 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_klass_exception), rax, rbx); | |
130 } else { | |
131 if (message != NULL) { | |
132 __ lea(rbx, ExternalAddress((address)message)); | |
133 } else { | |
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134 __ movptr(rbx, NULL_WORD); |
0 | 135 } |
136 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), rax, rbx); | |
137 } | |
138 // throw exception | |
139 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
140 return entry; | |
141 } | |
142 | |
143 | |
144 address TemplateInterpreterGenerator::generate_continuation_for(TosState state) { | |
145 address entry = __ pc(); | |
146 // NULL last_sp until next java call | |
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147 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 148 __ dispatch_next(state); |
149 return entry; | |
150 } | |
151 | |
152 | |
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153 address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step, size_t index_size) { |
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154 address entry = __ pc(); |
0 | 155 |
156 #ifdef COMPILER2 | |
157 // The FPU stack is clean if UseSSE >= 2 but must be cleaned in other cases | |
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158 if ((state == ftos && UseSSE < 1) || (state == dtos && UseSSE < 2)) { |
0 | 159 for (int i = 1; i < 8; i++) { |
160 __ ffree(i); | |
161 } | |
162 } else if (UseSSE < 2) { | |
163 __ empty_FPU_stack(); | |
164 } | |
165 #endif | |
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166 if ((state == ftos && UseSSE < 1) || (state == dtos && UseSSE < 2)) { |
0 | 167 __ MacroAssembler::verify_FPU(1, "generate_return_entry_for compiled"); |
168 } else { | |
169 __ MacroAssembler::verify_FPU(0, "generate_return_entry_for compiled"); | |
170 } | |
171 | |
172 // In SSE mode, interpreter returns FP results in xmm0 but they need | |
173 // to end up back on the FPU so it can operate on them. | |
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174 if (state == ftos && UseSSE >= 1) { |
304 | 175 __ subptr(rsp, wordSize); |
0 | 176 __ movflt(Address(rsp, 0), xmm0); |
177 __ fld_s(Address(rsp, 0)); | |
304 | 178 __ addptr(rsp, wordSize); |
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179 } else if (state == dtos && UseSSE >= 2) { |
304 | 180 __ subptr(rsp, 2*wordSize); |
0 | 181 __ movdbl(Address(rsp, 0), xmm0); |
182 __ fld_d(Address(rsp, 0)); | |
304 | 183 __ addptr(rsp, 2*wordSize); |
0 | 184 } |
185 | |
186 __ MacroAssembler::verify_FPU(state == ftos || state == dtos ? 1 : 0, "generate_return_entry_for in interpreter"); | |
187 | |
188 // Restore stack bottom in case i2c adjusted stack | |
304 | 189 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
0 | 190 // and NULL it as marker that rsp is now tos until next java call |
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191 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 192 |
193 __ restore_bcp(); | |
194 __ restore_locals(); | |
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195 |
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196 if (state == atos) { |
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197 Register mdp = rbx; |
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198 Register tmp = rcx; |
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199 __ profile_return_type(mdp, rax, tmp); |
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200 } |
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201 |
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202 const Register cache = rbx; |
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203 const Register index = rcx; |
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204 __ get_cache_and_index_at_bcp(cache, index, 1, index_size); |
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205 |
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206 const Register flags = cache; |
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207 __ movl(flags, Address(cache, index, Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset())); |
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208 __ andl(flags, ConstantPoolCacheEntry::parameter_size_mask); |
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209 __ lea(rsp, Address(rsp, flags, Interpreter::stackElementScale())); |
0 | 210 __ dispatch_next(state, step); |
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211 |
0 | 212 return entry; |
213 } | |
214 | |
215 | |
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216 address InterpreterGenerator::generate_deopt_entry_for(TosState state, int step) { |
0 | 217 address entry = __ pc(); |
218 | |
219 // In SSE mode, FP results are in xmm0 | |
220 if (state == ftos && UseSSE > 0) { | |
304 | 221 __ subptr(rsp, wordSize); |
0 | 222 __ movflt(Address(rsp, 0), xmm0); |
223 __ fld_s(Address(rsp, 0)); | |
304 | 224 __ addptr(rsp, wordSize); |
0 | 225 } else if (state == dtos && UseSSE >= 2) { |
304 | 226 __ subptr(rsp, 2*wordSize); |
0 | 227 __ movdbl(Address(rsp, 0), xmm0); |
228 __ fld_d(Address(rsp, 0)); | |
304 | 229 __ addptr(rsp, 2*wordSize); |
0 | 230 } |
231 | |
232 __ MacroAssembler::verify_FPU(state == ftos || state == dtos ? 1 : 0, "generate_deopt_entry_for in interpreter"); | |
233 | |
234 // The stack is not extended by deopt but we must NULL last_sp as this | |
235 // entry is like a "return". | |
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236 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 237 __ restore_bcp(); |
238 __ restore_locals(); | |
239 // handle exceptions | |
240 { Label L; | |
241 const Register thread = rcx; | |
242 __ get_thread(thread); | |
304 | 243 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
0 | 244 __ jcc(Assembler::zero, L); |
245 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); | |
246 __ should_not_reach_here(); | |
247 __ bind(L); | |
248 } | |
249 __ dispatch_next(state, step); | |
250 return entry; | |
251 } | |
252 | |
253 | |
254 int AbstractInterpreter::BasicType_as_index(BasicType type) { | |
255 int i = 0; | |
256 switch (type) { | |
257 case T_BOOLEAN: i = 0; break; | |
258 case T_CHAR : i = 1; break; | |
259 case T_BYTE : i = 2; break; | |
260 case T_SHORT : i = 3; break; | |
261 case T_INT : // fall through | |
262 case T_LONG : // fall through | |
263 case T_VOID : i = 4; break; | |
264 case T_FLOAT : i = 5; break; // have to treat float and double separately for SSE | |
265 case T_DOUBLE : i = 6; break; | |
266 case T_OBJECT : // fall through | |
267 case T_ARRAY : i = 7; break; | |
268 default : ShouldNotReachHere(); | |
269 } | |
270 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds"); | |
271 return i; | |
272 } | |
273 | |
274 | |
275 address TemplateInterpreterGenerator::generate_result_handler_for(BasicType type) { | |
276 address entry = __ pc(); | |
277 switch (type) { | |
278 case T_BOOLEAN: __ c2bool(rax); break; | |
304 | 279 case T_CHAR : __ andptr(rax, 0xFFFF); break; |
0 | 280 case T_BYTE : __ sign_extend_byte (rax); break; |
281 case T_SHORT : __ sign_extend_short(rax); break; | |
282 case T_INT : /* nothing to do */ break; | |
283 case T_DOUBLE : | |
284 case T_FLOAT : | |
285 { const Register t = InterpreterRuntime::SignatureHandlerGenerator::temp(); | |
304 | 286 __ pop(t); // remove return address first |
0 | 287 // Must return a result for interpreter or compiler. In SSE |
288 // mode, results are returned in xmm0 and the FPU stack must | |
289 // be empty. | |
290 if (type == T_FLOAT && UseSSE >= 1) { | |
291 // Load ST0 | |
292 __ fld_d(Address(rsp, 0)); | |
293 // Store as float and empty fpu stack | |
294 __ fstp_s(Address(rsp, 0)); | |
295 // and reload | |
296 __ movflt(xmm0, Address(rsp, 0)); | |
297 } else if (type == T_DOUBLE && UseSSE >= 2 ) { | |
298 __ movdbl(xmm0, Address(rsp, 0)); | |
299 } else { | |
300 // restore ST0 | |
301 __ fld_d(Address(rsp, 0)); | |
302 } | |
303 // and pop the temp | |
304 | 304 __ addptr(rsp, 2 * wordSize); |
305 __ push(t); // restore return address | |
0 | 306 } |
307 break; | |
308 case T_OBJECT : | |
309 // retrieve result from frame | |
304 | 310 __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); |
0 | 311 // and verify it |
312 __ verify_oop(rax); | |
313 break; | |
314 default : ShouldNotReachHere(); | |
315 } | |
316 __ ret(0); // return from result handler | |
317 return entry; | |
318 } | |
319 | |
320 address TemplateInterpreterGenerator::generate_safept_entry_for(TosState state, address runtime_entry) { | |
321 address entry = __ pc(); | |
322 __ push(state); | |
323 __ call_VM(noreg, runtime_entry); | |
324 __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); | |
325 return entry; | |
326 } | |
327 | |
328 | |
329 // Helpers for commoning out cases in the various type of method entries. | |
330 // | |
331 | |
332 // increment invocation count & check for overflow | |
333 // | |
334 // Note: checking for negative value instead of overflow | |
335 // so we have a 'sticky' overflow test | |
336 // | |
337 // rbx,: method | |
338 // rcx: invocation counter | |
339 // | |
340 void InterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) { | |
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341 Label done; |
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342 // Note: In tiered we increment either counters in MethodCounters* or in MDO |
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343 // depending if we're profiling or not. |
1783 | 344 if (TieredCompilation) { |
345 int increment = InvocationCounter::count_increment; | |
346 int mask = ((1 << Tier0InvokeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
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347 Label no_mdo; |
1783 | 348 if (ProfileInterpreter) { |
349 // Are we profiling? | |
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350 __ movptr(rax, Address(rbx, Method::method_data_offset())); |
1783 | 351 __ testptr(rax, rax); |
352 __ jccb(Assembler::zero, no_mdo); | |
353 // Increment counter in the MDO | |
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354 const Address mdo_invocation_counter(rax, in_bytes(MethodData::invocation_counter_offset()) + |
1783 | 355 in_bytes(InvocationCounter::counter_offset())); |
356 __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rcx, false, Assembler::zero, overflow); | |
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357 __ jmp(done); |
1783 | 358 } |
359 __ bind(no_mdo); | |
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360 // Increment counter in MethodCounters |
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361 const Address invocation_counter(rax, |
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362 MethodCounters::invocation_counter_offset() + |
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363 InvocationCounter::counter_offset()); |
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364 |
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365 __ get_method_counters(rbx, rax, done); |
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366 __ increment_mask_and_jump(invocation_counter, increment, mask, |
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367 rcx, false, Assembler::zero, overflow); |
1783 | 368 __ bind(done); |
369 } else { | |
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370 const Address backedge_counter (rax, |
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371 MethodCounters::backedge_counter_offset() + |
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372 InvocationCounter::counter_offset()); |
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373 const Address invocation_counter(rax, |
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374 MethodCounters::invocation_counter_offset() + |
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375 InvocationCounter::counter_offset()); |
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376 |
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377 __ get_method_counters(rbx, rax, done); |
0 | 378 |
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379 if (ProfileInterpreter) { |
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380 __ incrementl(Address(rax, |
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381 MethodCounters::interpreter_invocation_counter_offset())); |
1783 | 382 } |
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383 |
1783 | 384 // Update standard invocation counters |
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385 __ movl(rcx, invocation_counter); |
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386 __ incrementl(rcx, InvocationCounter::count_increment); |
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387 __ movl(invocation_counter, rcx); // save invocation count |
1783 | 388 |
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389 __ movl(rax, backedge_counter); // load backedge counter |
1783 | 390 __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits |
391 | |
392 __ addl(rcx, rax); // add both counters | |
0 | 393 |
1783 | 394 // profile_method is non-null only for interpreted method so |
395 // profile_method != NULL == !native_call | |
396 // BytecodeInterpreter only calls for native so code is elided. | |
397 | |
398 if (ProfileInterpreter && profile_method != NULL) { | |
399 // Test to see if we should create a method data oop | |
400 __ cmp32(rcx, | |
401 ExternalAddress((address)&InvocationCounter::InterpreterProfileLimit)); | |
402 __ jcc(Assembler::less, *profile_method_continue); | |
403 | |
404 // if no method data exists, go to profile_method | |
405 __ test_method_data_pointer(rax, *profile_method); | |
406 } | |
407 | |
0 | 408 __ cmp32(rcx, |
1783 | 409 ExternalAddress((address)&InvocationCounter::InterpreterInvocationLimit)); |
410 __ jcc(Assembler::aboveEqual, *overflow); | |
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411 __ bind(done); |
0 | 412 } |
413 } | |
414 | |
415 void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { | |
416 | |
417 // Asm interpreter on entry | |
418 // rdi - locals | |
419 // rsi - bcp | |
420 // rbx, - method | |
421 // rdx - cpool | |
422 // rbp, - interpreter frame | |
423 | |
424 // C++ interpreter on entry | |
425 // rsi - new interpreter state pointer | |
426 // rbp - interpreter frame pointer | |
427 // rbx - method | |
428 | |
429 // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] | |
430 // rbx, - method | |
431 // rcx - rcvr (assuming there is one) | |
432 // top of stack return address of interpreter caller | |
433 // rsp - sender_sp | |
434 | |
435 // C++ interpreter only | |
436 // rsi - previous interpreter state pointer | |
437 | |
438 // InterpreterRuntime::frequency_counter_overflow takes one argument | |
439 // indicating if the counter overflow occurs at a backwards branch (non-NULL bcp). | |
440 // The call returns the address of the verified entry point for the method or NULL | |
441 // if the compilation did not complete (either went background or bailed out). | |
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442 __ movptr(rax, (intptr_t)false); |
0 | 443 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rax); |
444 | |
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445 __ movptr(rbx, Address(rbp, method_offset)); // restore Method* |
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446 __ set_method_data_pointer_for_bcp(); |
0 | 447 |
448 // Preserve invariant that rsi/rdi contain bcp/locals of sender frame | |
449 // and jump to the interpreted entry. | |
450 __ jmp(*do_continue, relocInfo::none); | |
451 | |
452 } | |
453 | |
454 void InterpreterGenerator::generate_stack_overflow_check(void) { | |
455 // see if we've got enough room on the stack for locals plus overhead. | |
456 // the expression stack grows down incrementally, so the normal guard | |
457 // page mechanism will work for that. | |
458 // | |
459 // Registers live on entry: | |
460 // | |
461 // Asm interpreter | |
462 // rdx: number of additional locals this frame needs (what we must check) | |
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463 // rbx,: Method* |
0 | 464 |
465 // destroyed on exit | |
466 // rax, | |
467 | |
468 // NOTE: since the additional locals are also always pushed (wasn't obvious in | |
469 // generate_method_entry) so the guard should work for them too. | |
470 // | |
471 | |
472 // monitor entry size: see picture of stack set (generate_method_entry) and frame_x86.hpp | |
473 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
474 | |
475 // total overhead size: entry_size + (saved rbp, thru expr stack bottom). | |
476 // be sure to change this if you add/subtract anything to/from the overhead area | |
477 const int overhead_size = -(frame::interpreter_frame_initial_sp_offset*wordSize) + entry_size; | |
478 | |
479 const int page_size = os::vm_page_size(); | |
480 | |
481 Label after_frame_check; | |
482 | |
483 // see if the frame is greater than one page in size. If so, | |
484 // then we need to verify there is enough stack space remaining | |
485 // for the additional locals. | |
1506 | 486 __ cmpl(rdx, (page_size - overhead_size)/Interpreter::stackElementSize); |
0 | 487 __ jcc(Assembler::belowEqual, after_frame_check); |
488 | |
489 // compute rsp as if this were going to be the last frame on | |
490 // the stack before the red zone | |
491 | |
492 Label after_frame_check_pop; | |
493 | |
304 | 494 __ push(rsi); |
0 | 495 |
496 const Register thread = rsi; | |
497 | |
498 __ get_thread(thread); | |
499 | |
500 const Address stack_base(thread, Thread::stack_base_offset()); | |
501 const Address stack_size(thread, Thread::stack_size_offset()); | |
502 | |
503 // locals + overhead, in bytes | |
304 | 504 __ lea(rax, Address(noreg, rdx, Interpreter::stackElementScale(), overhead_size)); |
0 | 505 |
506 #ifdef ASSERT | |
507 Label stack_base_okay, stack_size_okay; | |
508 // verify that thread stack base is non-zero | |
304 | 509 __ cmpptr(stack_base, (int32_t)NULL_WORD); |
0 | 510 __ jcc(Assembler::notEqual, stack_base_okay); |
511 __ stop("stack base is zero"); | |
512 __ bind(stack_base_okay); | |
513 // verify that thread stack size is non-zero | |
304 | 514 __ cmpptr(stack_size, 0); |
0 | 515 __ jcc(Assembler::notEqual, stack_size_okay); |
516 __ stop("stack size is zero"); | |
517 __ bind(stack_size_okay); | |
518 #endif | |
519 | |
520 // Add stack base to locals and subtract stack size | |
304 | 521 __ addptr(rax, stack_base); |
522 __ subptr(rax, stack_size); | |
0 | 523 |
524 // Use the maximum number of pages we might bang. | |
525 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : | |
526 (StackRedPages+StackYellowPages); | |
304 | 527 __ addptr(rax, max_pages * page_size); |
0 | 528 |
529 // check against the current stack bottom | |
304 | 530 __ cmpptr(rsp, rax); |
0 | 531 __ jcc(Assembler::above, after_frame_check_pop); |
532 | |
304 | 533 __ pop(rsi); // get saved bcp / (c++ prev state ). |
0 | 534 |
4743 | 535 // Restore sender's sp as SP. This is necessary if the sender's |
536 // frame is an extended compiled frame (see gen_c2i_adapter()) | |
537 // and safer anyway in case of JSR292 adaptations. | |
0 | 538 |
4743 | 539 __ pop(rax); // return address must be moved if SP is changed |
540 __ mov(rsp, rsi); | |
541 __ push(rax); | |
542 | |
543 // Note: the restored frame is not necessarily interpreted. | |
544 // Use the shared runtime version of the StackOverflowError. | |
545 assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated"); | |
546 __ jump(ExternalAddress(StubRoutines::throw_StackOverflowError_entry())); | |
0 | 547 // all done with frame size check |
548 __ bind(after_frame_check_pop); | |
304 | 549 __ pop(rsi); |
0 | 550 |
551 __ bind(after_frame_check); | |
552 } | |
553 | |
554 // Allocate monitor and lock method (asm interpreter) | |
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555 // rbx, - Method* |
0 | 556 // |
557 void InterpreterGenerator::lock_method(void) { | |
558 // synchronize method | |
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559 const Address access_flags (rbx, Method::access_flags_offset()); |
0 | 560 const Address monitor_block_top (rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); |
561 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
562 | |
563 #ifdef ASSERT | |
564 { Label L; | |
565 __ movl(rax, access_flags); | |
566 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
567 __ jcc(Assembler::notZero, L); | |
568 __ stop("method doesn't need synchronization"); | |
569 __ bind(L); | |
570 } | |
571 #endif // ASSERT | |
572 // get synchronization object | |
573 { Label done; | |
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574 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
0 | 575 __ movl(rax, access_flags); |
576 __ testl(rax, JVM_ACC_STATIC); | |
304 | 577 __ movptr(rax, Address(rdi, Interpreter::local_offset_in_bytes(0))); // get receiver (assume this is frequent case) |
0 | 578 __ jcc(Assembler::zero, done); |
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579 __ movptr(rax, Address(rbx, Method::const_offset())); |
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580 __ movptr(rax, Address(rax, ConstMethod::constants_offset())); |
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581 __ movptr(rax, Address(rax, ConstantPool::pool_holder_offset_in_bytes())); |
304 | 582 __ movptr(rax, Address(rax, mirror_offset)); |
0 | 583 __ bind(done); |
584 } | |
585 // add space for monitor & lock | |
304 | 586 __ subptr(rsp, entry_size); // add space for a monitor entry |
587 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
588 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); // store object | |
589 __ mov(rdx, rsp); // object address | |
0 | 590 __ lock_object(rdx); |
591 } | |
592 | |
593 // | |
594 // Generate a fixed interpreter frame. This is identical setup for interpreted methods | |
595 // and for native methods hence the shared code. | |
596 | |
597 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
598 // initialize fixed part of activation frame | |
304 | 599 __ push(rax); // save return address |
0 | 600 __ enter(); // save old & set new rbp, |
601 | |
602 | |
304 | 603 __ push(rsi); // set sender sp |
604 __ push((int32_t)NULL_WORD); // leave last_sp as null | |
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605 __ movptr(rsi, Address(rbx,Method::const_offset())); // get ConstMethod* |
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606 __ lea(rsi, Address(rsi,ConstMethod::codes_offset())); // get codebase |
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607 __ push(rbx); // save Method* |
0 | 608 if (ProfileInterpreter) { |
609 Label method_data_continue; | |
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610 __ movptr(rdx, Address(rbx, in_bytes(Method::method_data_offset()))); |
304 | 611 __ testptr(rdx, rdx); |
0 | 612 __ jcc(Assembler::zero, method_data_continue); |
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613 __ addptr(rdx, in_bytes(MethodData::data_offset())); |
0 | 614 __ bind(method_data_continue); |
304 | 615 __ push(rdx); // set the mdp (method data pointer) |
0 | 616 } else { |
304 | 617 __ push(0); |
0 | 618 } |
619 | |
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620 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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621 __ movptr(rdx, Address(rdx, ConstMethod::constants_offset())); |
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622 __ movptr(rdx, Address(rdx, ConstantPool::cache_offset_in_bytes())); |
304 | 623 __ push(rdx); // set constant pool cache |
624 __ push(rdi); // set locals pointer | |
0 | 625 if (native_call) { |
304 | 626 __ push(0); // no bcp |
0 | 627 } else { |
304 | 628 __ push(rsi); // set bcp |
0 | 629 } |
304 | 630 __ push(0); // reserve word for pointer to expression stack bottom |
631 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
0 | 632 } |
633 | |
634 // End of helpers | |
635 | |
636 // | |
637 // Various method entries | |
638 //------------------------------------------------------------------------------------------------------------------------ | |
639 // | |
640 // | |
641 | |
642 // Call an accessor method (assuming it is resolved, otherwise drop into vanilla (slow path) entry | |
643 | |
644 address InterpreterGenerator::generate_accessor_entry(void) { | |
645 | |
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646 // rbx,: Method* |
0 | 647 // rcx: receiver (preserve for slow entry into asm interpreter) |
648 | |
649 // rsi: senderSP must preserved for slow path, set SP to it on fast path | |
650 | |
651 address entry_point = __ pc(); | |
652 Label xreturn_path; | |
653 | |
654 // do fastpath for resolved accessor methods | |
655 if (UseFastAccessorMethods) { | |
656 Label slow_path; | |
657 // If we need a safepoint check, generate full interpreter entry. | |
658 ExternalAddress state(SafepointSynchronize::address_of_state()); | |
659 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
660 SafepointSynchronize::_not_synchronized); | |
661 | |
662 __ jcc(Assembler::notEqual, slow_path); | |
663 // ASM/C++ Interpreter | |
664 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites thereof; parameter size = 1 | |
665 // Note: We can only use this code if the getfield has been resolved | |
666 // and if we don't have a null-pointer exception => check for | |
667 // these conditions first and use slow path if necessary. | |
668 // rbx,: method | |
669 // rcx: receiver | |
304 | 670 __ movptr(rax, Address(rsp, wordSize)); |
0 | 671 |
672 // check if local 0 != NULL and read field | |
304 | 673 __ testptr(rax, rax); |
0 | 674 __ jcc(Assembler::zero, slow_path); |
675 | |
676 // read first instruction word and extract bytecode @ 1 and index @ 2 | |
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677 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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678 __ movptr(rdi, Address(rdx, ConstMethod::constants_offset())); |
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679 __ movl(rdx, Address(rdx, ConstMethod::codes_offset())); |
0 | 680 // Shift codes right to get the index on the right. |
681 // The bytecode fetched looks like <index><0xb4><0x2a> | |
682 __ shrl(rdx, 2*BitsPerByte); | |
683 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
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684 __ movptr(rdi, Address(rdi, ConstantPool::cache_offset_in_bytes())); |
0 | 685 |
686 // rax,: local 0 | |
687 // rbx,: method | |
688 // rcx: receiver - do not destroy since it is needed for slow path! | |
689 // rcx: scratch | |
690 // rdx: constant pool cache index | |
691 // rdi: constant pool cache | |
692 // rsi: sender sp | |
693 | |
694 // check if getfield has been resolved and read constant pool cache entry | |
695 // check the validity of the cache entry by testing whether _indices field | |
696 // contains Bytecode::_getfield in b1 byte. | |
697 assert(in_words(ConstantPoolCacheEntry::size()) == 4, "adjust shift below"); | |
698 __ movl(rcx, | |
699 Address(rdi, | |
700 rdx, | |
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701 Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::indices_offset())); |
0 | 702 __ shrl(rcx, 2*BitsPerByte); |
703 __ andl(rcx, 0xFF); | |
704 __ cmpl(rcx, Bytecodes::_getfield); | |
705 __ jcc(Assembler::notEqual, slow_path); | |
706 | |
707 // Note: constant pool entry is not valid before bytecode is resolved | |
304 | 708 __ movptr(rcx, |
709 Address(rdi, | |
710 rdx, | |
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711 Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::f2_offset())); |
0 | 712 __ movl(rdx, |
713 Address(rdi, | |
714 rdx, | |
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715 Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset())); |
0 | 716 |
23614 | 717 Label notByte, notBool, notShort, notChar; |
0 | 718 const Address field_address (rax, rcx, Address::times_1); |
719 | |
720 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
721 // because they are different sizes. | |
722 // Use the type from the constant pool cache | |
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723 __ shrl(rdx, ConstantPoolCacheEntry::tos_state_shift); |
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724 // Make sure we don't need to mask rdx after the above shift |
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725 ConstantPoolCacheEntry::verify_tos_state_shift(); |
0 | 726 __ cmpl(rdx, btos); |
727 __ jcc(Assembler::notEqual, notByte); | |
728 __ load_signed_byte(rax, field_address); | |
729 __ jmp(xreturn_path); | |
730 | |
731 __ bind(notByte); | |
23614 | 732 __ cmpl(rdx, ztos); |
733 __ jcc(Assembler::notEqual, notBool); | |
734 __ load_signed_byte(rax, field_address); | |
735 __ jmp(xreturn_path); | |
736 | |
737 __ bind(notBool); | |
0 | 738 __ cmpl(rdx, stos); |
739 __ jcc(Assembler::notEqual, notShort); | |
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740 __ load_signed_short(rax, field_address); |
0 | 741 __ jmp(xreturn_path); |
742 | |
743 __ bind(notShort); | |
744 __ cmpl(rdx, ctos); | |
745 __ jcc(Assembler::notEqual, notChar); | |
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746 __ load_unsigned_short(rax, field_address); |
0 | 747 __ jmp(xreturn_path); |
748 | |
749 __ bind(notChar); | |
750 #ifdef ASSERT | |
751 Label okay; | |
752 __ cmpl(rdx, atos); | |
753 __ jcc(Assembler::equal, okay); | |
754 __ cmpl(rdx, itos); | |
755 __ jcc(Assembler::equal, okay); | |
756 __ stop("what type is this?"); | |
757 __ bind(okay); | |
758 #endif // ASSERT | |
759 // All the rest are a 32 bit wordsize | |
304 | 760 // This is ok for now. Since fast accessors should be going away |
761 __ movptr(rax, field_address); | |
0 | 762 |
763 __ bind(xreturn_path); | |
764 | |
765 // _ireturn/_areturn | |
304 | 766 __ pop(rdi); // get return address |
767 __ mov(rsp, rsi); // set sp to sender sp | |
0 | 768 __ jmp(rdi); |
769 | |
770 // generate a vanilla interpreter entry as the slow path | |
771 __ bind(slow_path); | |
772 | |
773 (void) generate_normal_entry(false); | |
774 return entry_point; | |
775 } | |
776 return NULL; | |
777 | |
778 } | |
779 | |
3249
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780 // Method entry for java.lang.ref.Reference.get. |
e1162778c1c8
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781 address InterpreterGenerator::generate_Reference_get_entry(void) { |
8001
db9981fd3124
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jprovino
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|
782 #if INCLUDE_ALL_GCS |
3249
e1162778c1c8
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|
783 // Code: _aload_0, _getfield, _areturn |
e1162778c1c8
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784 // parameter size = 1 |
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|
785 // |
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|
786 // The code that gets generated by this routine is split into 2 parts: |
e1162778c1c8
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|
787 // 1. The "intrinsified" code for G1 (or any SATB based GC), |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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788 // 2. The slow path - which is an expansion of the regular method entry. |
e1162778c1c8
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|
789 // |
e1162778c1c8
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|
790 // Notes:- |
e1162778c1c8
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791 // * In the G1 code we do not check whether we need to block for |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
792 // a safepoint. If G1 is enabled then we must execute the specialized |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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793 // code for Reference.get (except when the Reference object is null) |
e1162778c1c8
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794 // so that we can log the value in the referent field with an SATB |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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795 // update buffer. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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796 // 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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797 // G1 pre-barrier code is executed when the current method is |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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798 // Reference.get() then going through the normal method entry |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
799 // will be fine. |
e1162778c1c8
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|
800 // * The G1 code below can, however, check the receiver object (the instance |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
801 // 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
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|
802 // Reference object is null then we obviously cannot fetch the referent |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
803 // 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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|
804 // 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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|
805 // |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
806 // This code is based on generate_accessor_enty. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
807 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
808 // rbx,: Method* |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
809 // rcx: receiver (preserve for slow entry into asm interpreter) |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
810 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
811 // rsi: senderSP must preserved 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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|
812 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
813 address entry = __ pc(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
814 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
815 const int referent_offset = java_lang_ref_Reference::referent_offset; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
816 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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|
817 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
818 if (UseG1GC) { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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819 Label slow_path; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
820 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
821 // Check if local 0 != NULL |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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822 // 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
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823 __ movptr(rax, Address(rsp, wordSize)); |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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824 __ testptr(rax, rax); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
825 __ jcc(Assembler::zero, slow_path); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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826 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
827 // rax: local 0 (must be preserved across the G1 barrier call) |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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828 // |
e1162778c1c8
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829 // rbx: method (at this point it's scratch) |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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830 // rcx: receiver (at this point it's scratch) |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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831 // rdx: scratch |
e1162778c1c8
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|
832 // rdi: scratch |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
833 // |
e1162778c1c8
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|
834 // rsi: sender sp |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
835 |
e1162778c1c8
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|
836 // Preserve the sender sp in case the pre-barrier |
e1162778c1c8
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837 // calls the runtime |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
838 __ push(rsi); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
839 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
840 // Load the value of the referent field. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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841 const Address field_address(rax, referent_offset); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
842 __ movptr(rax, field_address); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
843 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
844 // Generate the G1 pre-barrier code to log the value of |
e1162778c1c8
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|
845 // the referent field in an SATB buffer. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
846 __ get_thread(rcx); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
847 __ g1_write_barrier_pre(noreg /* obj */, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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848 rax /* pre_val */, |
e1162778c1c8
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|
849 rcx /* thread */, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
850 rbx /* tmp */, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
851 true /* tosca_save */, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
852 true /* expand_call */); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
853 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
854 // _areturn |
e1162778c1c8
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|
855 __ pop(rsi); // get sender sp |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
856 __ pop(rdi); // get return address |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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857 __ mov(rsp, rsi); // set sp to sender sp |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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858 __ jmp(rdi); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
859 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
860 __ bind(slow_path); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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861 (void) generate_normal_entry(false); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
862 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
863 return entry; |
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864 } |
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jprovino
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865 #endif // INCLUDE_ALL_GCS |
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e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
866 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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867 // If G1 is not enabled then attempt to go through the accessor entry point |
e1162778c1c8
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868 // Reference.get is an accessor |
e1162778c1c8
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869 return generate_accessor_entry(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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870 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
871 |
11080
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872 /** |
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873 * Method entry for static native methods: |
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|
874 * int java.util.zip.CRC32.update(int crc, int b) |
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875 */ |
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|
876 address InterpreterGenerator::generate_CRC32_update_entry() { |
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877 if (UseCRC32Intrinsics) { |
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878 address entry = __ pc(); |
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|
879 |
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880 // rbx,: Method* |
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881 // rsi: senderSP must preserved for slow path, set SP to it on fast path |
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882 // rdx: scratch |
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drchase
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|
883 // rdi: scratch |
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drchase
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|
884 |
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|
885 Label slow_path; |
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886 // If we need a safepoint check, generate full interpreter entry. |
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887 ExternalAddress state(SafepointSynchronize::address_of_state()); |
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888 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), |
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889 SafepointSynchronize::_not_synchronized); |
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890 __ jcc(Assembler::notEqual, slow_path); |
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891 |
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892 // We don't generate local frame and don't align stack because |
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893 // we call stub code and there is no safepoint on this path. |
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894 |
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895 // Load parameters |
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896 const Register crc = rax; // crc |
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897 const Register val = rdx; // source java byte value |
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898 const Register tbl = rdi; // scratch |
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899 |
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900 // Arguments are reversed on java expression stack |
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901 __ movl(val, Address(rsp, wordSize)); // byte value |
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902 __ movl(crc, Address(rsp, 2*wordSize)); // Initial CRC |
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903 |
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904 __ lea(tbl, ExternalAddress(StubRoutines::crc_table_addr())); |
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905 __ notl(crc); // ~crc |
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906 __ update_byte_crc32(crc, val, tbl); |
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907 __ notl(crc); // ~crc |
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908 // result in rax |
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909 |
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910 // _areturn |
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911 __ pop(rdi); // get return address |
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912 __ mov(rsp, rsi); // set sp to sender sp |
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913 __ jmp(rdi); |
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914 |
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915 // generate a vanilla native entry as the slow path |
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916 __ bind(slow_path); |
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917 |
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918 (void) generate_native_entry(false); |
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919 |
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920 return entry; |
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921 } |
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922 return generate_native_entry(false); |
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923 } |
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924 |
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925 /** |
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926 * Method entry for static native methods: |
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927 * int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int len) |
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928 * int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len) |
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929 */ |
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930 address InterpreterGenerator::generate_CRC32_updateBytes_entry(AbstractInterpreter::MethodKind kind) { |
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931 if (UseCRC32Intrinsics) { |
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932 address entry = __ pc(); |
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933 |
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934 // rbx,: Method* |
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935 // rsi: senderSP must preserved for slow path, set SP to it on fast path |
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936 // rdx: scratch |
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937 // rdi: scratch |
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938 |
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939 Label slow_path; |
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940 // If we need a safepoint check, generate full interpreter entry. |
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941 ExternalAddress state(SafepointSynchronize::address_of_state()); |
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942 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), |
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943 SafepointSynchronize::_not_synchronized); |
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944 __ jcc(Assembler::notEqual, slow_path); |
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945 |
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946 // We don't generate local frame and don't align stack because |
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947 // we call stub code and there is no safepoint on this path. |
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948 |
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949 // Load parameters |
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950 const Register crc = rax; // crc |
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951 const Register buf = rdx; // source java byte array address |
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952 const Register len = rdi; // length |
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953 |
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954 // Arguments are reversed on java expression stack |
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955 __ movl(len, Address(rsp, wordSize)); // Length |
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956 // Calculate address of start element |
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957 if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) { |
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958 __ movptr(buf, Address(rsp, 3*wordSize)); // long buf |
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959 __ addptr(buf, Address(rsp, 2*wordSize)); // + offset |
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960 __ movl(crc, Address(rsp, 5*wordSize)); // Initial CRC |
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961 } else { |
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962 __ movptr(buf, Address(rsp, 3*wordSize)); // byte[] array |
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963 __ addptr(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size |
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964 __ addptr(buf, Address(rsp, 2*wordSize)); // + offset |
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965 __ movl(crc, Address(rsp, 4*wordSize)); // Initial CRC |
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966 } |
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967 |
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968 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32()), crc, buf, len); |
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969 // result in rax |
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970 |
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971 // _areturn |
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972 __ pop(rdi); // get return address |
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973 __ mov(rsp, rsi); // set sp to sender sp |
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974 __ jmp(rdi); |
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975 |
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976 // generate a vanilla native entry as the slow path |
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977 __ bind(slow_path); |
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978 |
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979 (void) generate_native_entry(false); |
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980 |
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981 return entry; |
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982 } |
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983 return generate_native_entry(false); |
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984 } |
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985 |
0 | 986 // |
987 // Interpreter stub for calling a native method. (asm interpreter) | |
988 // This sets up a somewhat different looking stack for calling the native method | |
989 // than the typical interpreter frame setup. | |
990 // | |
991 | |
992 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
993 // determine code generation flags | |
994 bool inc_counter = UseCompiler || CountCompiledCalls; | |
995 | |
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996 // rbx,: Method* |
0 | 997 // rsi: sender sp |
998 // rsi: previous interpreter state (C++ interpreter) must preserve | |
999 address entry_point = __ pc(); | |
1000 | |
7402
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1001 const Address constMethod (rbx, Method::const_offset()); |
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1002 const Address access_flags (rbx, Method::access_flags_offset()); |
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1003 const Address size_of_parameters(rcx, ConstMethod::size_of_parameters_offset()); |
0 | 1004 |
1005 // get parameter size (always needed) | |
7402
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1006 __ movptr(rcx, constMethod); |
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1007 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 1008 |
1009 // native calls don't need the stack size check since they have no expression stack | |
1010 // and the arguments are already on the stack and we only add a handful of words | |
1011 // to the stack | |
1012 | |
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1013 // rbx,: Method* |
0 | 1014 // rcx: size of parameters |
1015 // rsi: sender sp | |
1016 | |
304 | 1017 __ pop(rax); // get return address |
0 | 1018 // for natives the size of locals is zero |
1019 | |
1020 // compute beginning of parameters (rdi) | |
304 | 1021 __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); |
0 | 1022 |
1023 | |
1024 // add 2 zero-initialized slots for native calls | |
1025 // NULL result handler | |
304 | 1026 __ push((int32_t)NULL_WORD); |
0 | 1027 // NULL oop temp (mirror or jni oop result) |
304 | 1028 __ push((int32_t)NULL_WORD); |
0 | 1029 |
1030 // initialize fixed part of activation frame | |
1031 generate_fixed_frame(true); | |
1032 | |
1033 // make sure method is native & not abstract | |
1034 #ifdef ASSERT | |
1035 __ movl(rax, access_flags); | |
1036 { | |
1037 Label L; | |
1038 __ testl(rax, JVM_ACC_NATIVE); | |
1039 __ jcc(Assembler::notZero, L); | |
1040 __ stop("tried to execute non-native method as native"); | |
1041 __ bind(L); | |
1042 } | |
1043 { Label L; | |
1044 __ testl(rax, JVM_ACC_ABSTRACT); | |
1045 __ jcc(Assembler::zero, L); | |
1046 __ stop("tried to execute abstract method in interpreter"); | |
1047 __ bind(L); | |
1048 } | |
1049 #endif | |
1050 | |
1051 // Since at this point in the method invocation the exception handler | |
1052 // would try to exit the monitor of synchronized methods which hasn't | |
1053 // been entered yet, we set the thread local variable | |
1054 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
1055 // check this flag. | |
1056 | |
1057 __ get_thread(rax); | |
1058 const Address do_not_unlock_if_synchronized(rax, | |
1059 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
1060 __ movbool(do_not_unlock_if_synchronized, true); | |
1061 | |
1062 // increment invocation count & check for overflow | |
1063 Label invocation_counter_overflow; | |
1064 if (inc_counter) { | |
1065 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
1066 } | |
1067 | |
1068 Label continue_after_compile; | |
1069 __ bind(continue_after_compile); | |
1070 | |
1071 bang_stack_shadow_pages(true); | |
1072 | |
1073 // reset the _do_not_unlock_if_synchronized flag | |
1074 __ get_thread(rax); | |
1075 __ movbool(do_not_unlock_if_synchronized, false); | |
1076 | |
1077 // check for synchronized methods | |
1078 // Must happen AFTER invocation_counter check and stack overflow check, | |
1079 // so method is not locked if overflows. | |
1080 // | |
1081 if (synchronized) { | |
1082 lock_method(); | |
1083 } else { | |
1084 // no synchronization necessary | |
1085 #ifdef ASSERT | |
1086 { Label L; | |
1087 __ movl(rax, access_flags); | |
1088 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
1089 __ jcc(Assembler::zero, L); | |
1090 __ stop("method needs synchronization"); | |
1091 __ bind(L); | |
1092 } | |
1093 #endif | |
1094 } | |
1095 | |
1096 // start execution | |
1097 #ifdef ASSERT | |
1098 { Label L; | |
1099 const Address monitor_block_top (rbp, | |
1100 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 1101 __ movptr(rax, monitor_block_top); |
1102 __ cmpptr(rax, rsp); | |
0 | 1103 __ jcc(Assembler::equal, L); |
1104 __ stop("broken stack frame setup in interpreter"); | |
1105 __ bind(L); | |
1106 } | |
1107 #endif | |
1108 | |
1109 // jvmti/dtrace support | |
1110 __ notify_method_entry(); | |
1111 | |
1112 // work registers | |
1113 const Register method = rbx; | |
1114 const Register thread = rdi; | |
1115 const Register t = rcx; | |
1116 | |
1117 // allocate space for parameters | |
1118 __ get_method(method); | |
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1119 __ movptr(t, Address(method, Method::const_offset())); |
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1120 __ load_unsigned_short(t, Address(t, ConstMethod::size_of_parameters_offset())); |
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1121 |
1506 | 1122 __ shlptr(t, Interpreter::logStackElementSize); |
304 | 1123 __ addptr(t, 2*wordSize); // allocate two more slots for JNIEnv and possible mirror |
1124 __ subptr(rsp, t); | |
1125 __ andptr(rsp, -(StackAlignmentInBytes)); // gcc needs 16 byte aligned stacks to do XMM intrinsics | |
0 | 1126 |
1127 // get signature handler | |
1128 { Label L; | |
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1129 __ movptr(t, Address(method, Method::signature_handler_offset())); |
304 | 1130 __ testptr(t, t); |
0 | 1131 __ jcc(Assembler::notZero, L); |
1132 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); | |
1133 __ get_method(method); | |
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1134 __ movptr(t, Address(method, Method::signature_handler_offset())); |
0 | 1135 __ bind(L); |
1136 } | |
1137 | |
1138 // call signature handler | |
1139 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == rdi, "adjust this code"); | |
1140 assert(InterpreterRuntime::SignatureHandlerGenerator::to () == rsp, "adjust this code"); | |
1141 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == t , "adjust this code"); | |
1142 // The generated handlers do not touch RBX (the method oop). | |
1143 // However, large signatures cannot be cached and are generated | |
1144 // each time here. The slow-path generator will blow RBX | |
1145 // sometime, so we must reload it after the call. | |
1146 __ call(t); | |
1147 __ get_method(method); // slow path call blows RBX on DevStudio 5.0 | |
1148 | |
1149 // result handler is in rax, | |
1150 // set result handler | |
304 | 1151 __ movptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), rax); |
0 | 1152 |
1153 // pass mirror handle if static call | |
1154 { Label L; | |
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1155 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
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1156 __ movl(t, Address(method, Method::access_flags_offset())); |
0 | 1157 __ testl(t, JVM_ACC_STATIC); |
1158 __ jcc(Assembler::zero, L); | |
1159 // get mirror | |
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1160 __ movptr(t, Address(method, Method:: const_offset())); |
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1161 __ movptr(t, Address(t, ConstMethod::constants_offset())); |
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1162 __ movptr(t, Address(t, ConstantPool::pool_holder_offset_in_bytes())); |
304 | 1163 __ movptr(t, Address(t, mirror_offset)); |
0 | 1164 // copy mirror into activation frame |
304 | 1165 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), t); |
0 | 1166 // pass handle to mirror |
304 | 1167 __ lea(t, Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); |
1168 __ movptr(Address(rsp, wordSize), t); | |
0 | 1169 __ bind(L); |
1170 } | |
1171 | |
1172 // get native function entry point | |
1173 { Label L; | |
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1174 __ movptr(rax, Address(method, Method::native_function_offset())); |
0 | 1175 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
304 | 1176 __ cmpptr(rax, unsatisfied.addr()); |
0 | 1177 __ jcc(Assembler::notEqual, L); |
1178 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); | |
1179 __ get_method(method); | |
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1180 __ movptr(rax, Address(method, Method::native_function_offset())); |
0 | 1181 __ bind(L); |
1182 } | |
1183 | |
1184 // pass JNIEnv | |
1185 __ get_thread(thread); | |
304 | 1186 __ lea(t, Address(thread, JavaThread::jni_environment_offset())); |
1187 __ movptr(Address(rsp, 0), t); | |
0 | 1188 |
1189 // set_last_Java_frame_before_call | |
1190 // It is enough that the pc() | |
1191 // points into the right code segment. It does not have to be the correct return pc. | |
1192 __ set_last_Java_frame(thread, noreg, rbp, __ pc()); | |
1193 | |
1194 // change thread state | |
1195 #ifdef ASSERT | |
1196 { Label L; | |
1197 __ movl(t, Address(thread, JavaThread::thread_state_offset())); | |
1198 __ cmpl(t, _thread_in_Java); | |
1199 __ jcc(Assembler::equal, L); | |
1200 __ stop("Wrong thread state in native stub"); | |
1201 __ bind(L); | |
1202 } | |
1203 #endif | |
1204 | |
1205 // Change state to native | |
1206 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native); | |
1207 __ call(rax); | |
1208 | |
1209 // result potentially in rdx:rax or ST0 | |
1210 | |
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1211 // Verify or restore cpu control state after JNI call |
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1212 __ restore_cpu_control_state_after_jni(); |
0 | 1213 |
1214 // save potential result in ST(0) & rdx:rax | |
1215 // (if result handler is the T_FLOAT or T_DOUBLE handler, result must be in ST0 - | |
1216 // the check is necessary to avoid potential Intel FPU overflow problems by saving/restoring 'empty' FPU registers) | |
1217 // It is safe to do this push because state is _thread_in_native and return address will be found | |
1218 // via _last_native_pc and not via _last_jave_sp | |
1219 | |
1220 // NOTE: the order of theses push(es) is known to frame::interpreter_frame_result. | |
1221 // If the order changes or anything else is added to the stack the code in | |
1222 // interpreter_frame_result will have to be changed. | |
1223 | |
1224 { Label L; | |
1225 Label push_double; | |
1226 ExternalAddress float_handler(AbstractInterpreter::result_handler(T_FLOAT)); | |
1227 ExternalAddress double_handler(AbstractInterpreter::result_handler(T_DOUBLE)); | |
1228 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), | |
1229 float_handler.addr()); | |
1230 __ jcc(Assembler::equal, push_double); | |
1231 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), | |
1232 double_handler.addr()); | |
1233 __ jcc(Assembler::notEqual, L); | |
1234 __ bind(push_double); | |
1235 __ push(dtos); | |
1236 __ bind(L); | |
1237 } | |
1238 __ push(ltos); | |
1239 | |
1240 // change thread state | |
1241 __ get_thread(thread); | |
1242 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native_trans); | |
1243 if(os::is_MP()) { | |
1244 if (UseMembar) { | |
304 | 1245 // Force this write out before the read below |
1246 __ membar(Assembler::Membar_mask_bits( | |
1247 Assembler::LoadLoad | Assembler::LoadStore | | |
1248 Assembler::StoreLoad | Assembler::StoreStore)); | |
0 | 1249 } else { |
1250 // Write serialization page so VM thread can do a pseudo remote membar. | |
1251 // We use the current thread pointer to calculate a thread specific | |
1252 // offset to write to within the page. This minimizes bus traffic | |
1253 // due to cache line collision. | |
1254 __ serialize_memory(thread, rcx); | |
1255 } | |
1256 } | |
1257 | |
1258 if (AlwaysRestoreFPU) { | |
1259 // Make sure the control word is correct. | |
1260 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); | |
1261 } | |
1262 | |
1263 // check for safepoint operation in progress and/or pending suspend requests | |
1264 { Label Continue; | |
1265 | |
1266 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
1267 SafepointSynchronize::_not_synchronized); | |
1268 | |
1269 Label L; | |
1270 __ jcc(Assembler::notEqual, L); | |
1271 __ cmpl(Address(thread, JavaThread::suspend_flags_offset()), 0); | |
1272 __ jcc(Assembler::equal, Continue); | |
1273 __ bind(L); | |
1274 | |
1275 // Don't use call_VM as it will see a possible pending exception and forward it | |
1276 // and never return here preventing us from clearing _last_native_pc down below. | |
1277 // Also can't use call_VM_leaf either as it will check to see if rsi & rdi are | |
1278 // preserved and correspond to the bcp/locals pointers. So we do a runtime call | |
1279 // by hand. | |
1280 // | |
304 | 1281 __ push(thread); |
0 | 1282 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, |
1283 JavaThread::check_special_condition_for_native_trans))); | |
1284 __ increment(rsp, wordSize); | |
1285 __ get_thread(thread); | |
1286 | |
1287 __ bind(Continue); | |
1288 } | |
1289 | |
1290 // change thread state | |
1291 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
1292 | |
1293 __ reset_last_Java_frame(thread, true, true); | |
1294 | |
1295 // reset handle block | |
304 | 1296 __ movptr(t, Address(thread, JavaThread::active_handles_offset())); |
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1297 __ movl(Address(t, JNIHandleBlock::top_offset_in_bytes()), NULL_WORD); |
0 | 1298 |
1299 // If result was an oop then unbox and save it in the frame | |
1300 { Label L; | |
1301 Label no_oop, store_result; | |
1302 ExternalAddress handler(AbstractInterpreter::result_handler(T_OBJECT)); | |
1303 __ cmpptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), | |
1304 handler.addr()); | |
1305 __ jcc(Assembler::notEqual, no_oop); | |
304 | 1306 __ cmpptr(Address(rsp, 0), (int32_t)NULL_WORD); |
0 | 1307 __ pop(ltos); |
304 | 1308 __ testptr(rax, rax); |
0 | 1309 __ jcc(Assembler::zero, store_result); |
1310 // unbox | |
304 | 1311 __ movptr(rax, Address(rax, 0)); |
0 | 1312 __ bind(store_result); |
304 | 1313 __ movptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset)*wordSize), rax); |
0 | 1314 // keep stack depth as expected by pushing oop which will eventually be discarded |
1315 __ push(ltos); | |
1316 __ bind(no_oop); | |
1317 } | |
1318 | |
1319 { | |
1320 Label no_reguard; | |
1321 __ cmpl(Address(thread, JavaThread::stack_guard_state_offset()), JavaThread::stack_guard_yellow_disabled); | |
1322 __ jcc(Assembler::notEqual, no_reguard); | |
1323 | |
304 | 1324 __ pusha(); |
0 | 1325 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
304 | 1326 __ popa(); |
0 | 1327 |
1328 __ bind(no_reguard); | |
1329 } | |
1330 | |
1331 // restore rsi to have legal interpreter frame, | |
1332 // i.e., bci == 0 <=> rsi == code_base() | |
1333 // Can't call_VM until bcp is within reasonable. | |
1334 __ get_method(method); // method is junk from thread_in_native to now. | |
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1335 __ movptr(rsi, Address(method,Method::const_offset())); // get ConstMethod* |
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1336 __ lea(rsi, Address(rsi,ConstMethod::codes_offset())); // get codebase |
0 | 1337 |
1338 // handle exceptions (exception handling will handle unlocking!) | |
1339 { Label L; | |
304 | 1340 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
0 | 1341 __ jcc(Assembler::zero, L); |
1342 // Note: At some point we may want to unify this with the code used in call_VM_base(); | |
1343 // i.e., we should use the StubRoutines::forward_exception code. For now this | |
1344 // doesn't work here because the rsp is not correctly set at this point. | |
1345 __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); | |
1346 __ should_not_reach_here(); | |
1347 __ bind(L); | |
1348 } | |
1349 | |
1350 // do unlocking if necessary | |
1351 { Label L; | |
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1352 __ movl(t, Address(method, Method::access_flags_offset())); |
0 | 1353 __ testl(t, JVM_ACC_SYNCHRONIZED); |
1354 __ jcc(Assembler::zero, L); | |
1355 // the code below should be shared with interpreter macro assembler implementation | |
1356 { Label unlock; | |
1357 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
1358 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
1359 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
1360 | |
304 | 1361 __ lea(rdx, monitor); // address of first monitor |
0 | 1362 |
304 | 1363 __ movptr(t, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
1364 __ testptr(t, t); | |
0 | 1365 __ jcc(Assembler::notZero, unlock); |
1366 | |
1367 // Entry already unlocked, need to throw exception | |
1368 __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
1369 __ should_not_reach_here(); | |
1370 | |
1371 __ bind(unlock); | |
1372 __ unlock_object(rdx); | |
1373 } | |
1374 __ bind(L); | |
1375 } | |
1376 | |
1377 // jvmti/dtrace support | |
1378 // Note: This must happen _after_ handling/throwing any exceptions since | |
1379 // the exception handler code notifies the runtime of method exits | |
1380 // too. If this happens before, method entry/exit notifications are | |
1381 // not properly paired (was bug - gri 11/22/99). | |
1382 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
1383 | |
1384 // restore potential result in rdx:rax, call result handler to restore potential result in ST0 & handle result | |
1385 __ pop(ltos); | |
304 | 1386 __ movptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
0 | 1387 __ call(t); |
1388 | |
1389 // remove activation | |
304 | 1390 __ movptr(t, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 1391 __ leave(); // remove frame anchor |
304 | 1392 __ pop(rdi); // get return address |
1393 __ mov(rsp, t); // set sp to sender sp | |
0 | 1394 __ jmp(rdi); |
1395 | |
1396 if (inc_counter) { | |
1397 // Handle overflow of counter and compile method | |
1398 __ bind(invocation_counter_overflow); | |
1399 generate_counter_overflow(&continue_after_compile); | |
1400 } | |
1401 | |
1402 return entry_point; | |
1403 } | |
1404 | |
1405 // | |
1406 // Generic interpreted method entry to (asm) interpreter | |
1407 // | |
1408 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
1409 // determine code generation flags | |
1410 bool inc_counter = UseCompiler || CountCompiledCalls; | |
1411 | |
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1412 // rbx,: Method* |
0 | 1413 // rsi: sender sp |
1414 address entry_point = __ pc(); | |
1415 | |
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1416 const Address constMethod (rbx, Method::const_offset()); |
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1417 const Address access_flags (rbx, Method::access_flags_offset()); |
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1418 const Address size_of_parameters(rdx, ConstMethod::size_of_parameters_offset()); |
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1419 const Address size_of_locals (rdx, ConstMethod::size_of_locals_offset()); |
0 | 1420 |
1421 // get parameter size (always needed) | |
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1422 __ movptr(rdx, constMethod); |
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1423 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 1424 |
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1425 // rbx,: Method* |
0 | 1426 // rcx: size of parameters |
1427 | |
1428 // rsi: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
1429 | |
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1430 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
0 | 1431 __ subl(rdx, rcx); // rdx = no. of additional locals |
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 (rdi) | |
304 | 1440 __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -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((int32_t)NULL_WORD); // initialize local variables |
0 | 1451 __ decrement(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 { Label L; | |
1470 __ testl(rax, JVM_ACC_ABSTRACT); | |
1471 __ jcc(Assembler::zero, L); | |
1472 __ stop("tried to execute abstract method in interpreter"); | |
1473 __ bind(L); | |
1474 } | |
1475 #endif | |
1476 | |
1477 // Since at this point in the method invocation the exception handler | |
1478 // would try to exit the monitor of synchronized methods which hasn't | |
1479 // been entered yet, we set the thread local variable | |
1480 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
1481 // check this flag. | |
1482 | |
1483 __ get_thread(rax); | |
1484 const Address do_not_unlock_if_synchronized(rax, | |
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, &profile_method, &profile_method_continue); | |
1495 if (ProfileInterpreter) { | |
1496 __ bind(profile_method_continue); | |
1497 } | |
1498 } | |
1499 Label continue_after_compile; | |
1500 __ bind(continue_after_compile); | |
1501 | |
1502 bang_stack_shadow_pages(false); | |
1503 | |
1504 // reset the _do_not_unlock_if_synchronized flag | |
1505 __ get_thread(rax); | |
1506 __ movbool(do_not_unlock_if_synchronized, false); | |
1507 | |
1508 // check for synchronized methods | |
1509 // Must happen AFTER invocation_counter check and stack overflow check, | |
1510 // so method is not locked if overflows. | |
1511 // | |
1512 if (synchronized) { | |
1513 // Allocate monitor and lock method | |
1514 lock_method(); | |
1515 } else { | |
1516 // no synchronization necessary | |
1517 #ifdef ASSERT | |
1518 { Label L; | |
1519 __ movl(rax, access_flags); | |
1520 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
1521 __ jcc(Assembler::zero, L); | |
1522 __ stop("method needs synchronization"); | |
1523 __ bind(L); | |
1524 } | |
1525 #endif | |
1526 } | |
1527 | |
1528 // start execution | |
1529 #ifdef ASSERT | |
1530 { Label L; | |
1531 const Address monitor_block_top (rbp, | |
1532 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 1533 __ movptr(rax, monitor_block_top); |
1534 __ cmpptr(rax, rsp); | |
0 | 1535 __ jcc(Assembler::equal, L); |
1536 __ stop("broken stack frame setup in interpreter"); | |
1537 __ bind(L); | |
1538 } | |
1539 #endif | |
1540 | |
1541 // jvmti support | |
1542 __ notify_method_entry(); | |
1543 | |
1544 __ dispatch_next(vtos); | |
1545 | |
1546 // invocation counter overflow | |
1547 if (inc_counter) { | |
1548 if (ProfileInterpreter) { | |
1549 // We have decided to profile this method in the interpreter | |
1550 __ bind(profile_method); | |
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1551 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
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1552 __ set_method_data_pointer_for_bcp(); |
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1553 __ get_method(rbx); |
0 | 1554 __ jmp(profile_method_continue); |
1555 } | |
1556 // Handle overflow of counter and compile method | |
1557 __ bind(invocation_counter_overflow); | |
1558 generate_counter_overflow(&continue_after_compile); | |
1559 } | |
1560 | |
1561 return entry_point; | |
1562 } | |
1563 | |
1564 //------------------------------------------------------------------------------------------------------------------------ | |
1565 // Entry points | |
1566 // | |
1567 // Here we generate the various kind of entries into the interpreter. | |
1568 // The two main entry type are generic bytecode methods and native call method. | |
1569 // These both come in synchronized and non-synchronized versions but the | |
1570 // frame layout they create is very similar. The other method entry | |
1571 // types are really just special purpose entries that are really entry | |
1572 // and interpretation all in one. These are for trivial methods like | |
1573 // accessor, empty, or special math methods. | |
1574 // | |
1575 // When control flow reaches any of the entry types for the interpreter | |
1576 // the following holds -> | |
1577 // | |
1578 // Arguments: | |
1579 // | |
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1580 // rbx,: Method* |
0 | 1581 // rcx: receiver |
1582 // | |
1583 // | |
1584 // Stack layout immediately at entry | |
1585 // | |
1586 // [ return address ] <--- rsp | |
1587 // [ parameter n ] | |
1588 // ... | |
1589 // [ parameter 1 ] | |
1590 // [ expression stack ] (caller's java expression stack) | |
1591 | |
1592 // Assuming that we don't go to one of the trivial specialized | |
1593 // entries the stack will look like below when we are ready to execute | |
1594 // the first bytecode (or call the native routine). The register usage | |
1595 // will be as the template based interpreter expects (see interpreter_x86.hpp). | |
1596 // | |
1597 // local variables follow incoming parameters immediately; i.e. | |
1598 // the return address is moved to the end of the locals). | |
1599 // | |
1600 // [ monitor entry ] <--- rsp | |
1601 // ... | |
1602 // [ monitor entry ] | |
1603 // [ expr. stack bottom ] | |
1604 // [ saved rsi ] | |
1605 // [ current rdi ] | |
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1606 // [ Method* ] |
0 | 1607 // [ saved rbp, ] <--- rbp, |
1608 // [ return address ] | |
1609 // [ local variable m ] | |
1610 // ... | |
1611 // [ local variable 1 ] | |
1612 // [ parameter n ] | |
1613 // ... | |
1614 // [ parameter 1 ] <--- rdi | |
1615 | |
1616 address AbstractInterpreterGenerator::generate_method_entry(AbstractInterpreter::MethodKind kind) { | |
1617 // determine code generation flags | |
1618 bool synchronized = false; | |
1619 address entry_point = NULL; | |
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1620 InterpreterGenerator* ig_this = (InterpreterGenerator*)this; |
0 | 1621 |
1622 switch (kind) { | |
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1623 case Interpreter::zerolocals : break; |
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1624 case Interpreter::zerolocals_synchronized: synchronized = true; break; |
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1625 case Interpreter::native : entry_point = ig_this->generate_native_entry(false); break; |
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1626 case Interpreter::native_synchronized : entry_point = ig_this->generate_native_entry(true); break; |
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1627 case Interpreter::empty : entry_point = ig_this->generate_empty_entry(); break; |
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1628 case Interpreter::accessor : entry_point = ig_this->generate_accessor_entry(); break; |
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1629 case Interpreter::abstract : entry_point = ig_this->generate_abstract_entry(); break; |
0 | 1630 |
1631 case Interpreter::java_lang_math_sin : // fall thru | |
1632 case Interpreter::java_lang_math_cos : // fall thru | |
1633 case Interpreter::java_lang_math_tan : // fall thru | |
1634 case Interpreter::java_lang_math_abs : // fall thru | |
1635 case Interpreter::java_lang_math_log : // fall thru | |
1636 case Interpreter::java_lang_math_log10 : // fall thru | |
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1637 case Interpreter::java_lang_math_sqrt : // fall thru |
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1638 case Interpreter::java_lang_math_pow : // fall thru |
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1639 case Interpreter::java_lang_math_exp : entry_point = ig_this->generate_math_entry(kind); break; |
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1640 case Interpreter::java_lang_ref_reference_get |
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1641 : entry_point = ig_this->generate_Reference_get_entry(); break; |
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1642 case Interpreter::java_util_zip_CRC32_update |
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1643 : entry_point = ig_this->generate_CRC32_update_entry(); break; |
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1644 case Interpreter::java_util_zip_CRC32_updateBytes |
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1645 : // fall thru |
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1646 case Interpreter::java_util_zip_CRC32_updateByteBuffer |
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1647 : entry_point = ig_this->generate_CRC32_updateBytes_entry(kind); break; |
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1648 default: |
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1649 fatal(err_msg("unexpected method kind: %d", kind)); |
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1650 break; |
0 | 1651 } |
1652 | |
1653 if (entry_point) return entry_point; | |
1654 | |
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1655 return ig_this->generate_normal_entry(synchronized); |
0 | 1656 |
1657 } | |
1658 | |
1174
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1659 // These should never be compiled since the interpreter will prefer |
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1660 // the compiled version to the intrinsic version. |
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1661 bool AbstractInterpreter::can_be_compiled(methodHandle m) { |
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1662 switch (method_kind(m)) { |
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1663 case Interpreter::java_lang_math_sin : // fall thru |
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1664 case Interpreter::java_lang_math_cos : // fall thru |
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1665 case Interpreter::java_lang_math_tan : // fall thru |
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1666 case Interpreter::java_lang_math_abs : // fall thru |
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1667 case Interpreter::java_lang_math_log : // fall thru |
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1668 case Interpreter::java_lang_math_log10 : // fall thru |
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1669 case Interpreter::java_lang_math_sqrt : // fall thru |
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1670 case Interpreter::java_lang_math_pow : // fall thru |
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1671 case Interpreter::java_lang_math_exp : |
1174
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1672 return false; |
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1673 default: |
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1674 return true; |
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1675 } |
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1676 } |
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1677 |
0 | 1678 // How much stack a method activation needs in words. |
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1679 int AbstractInterpreter::size_top_interpreter_activation(Method* method) { |
0 | 1680 |
1681 const int stub_code = 4; // see generate_call_stub | |
1682 // Save space for one monitor to get into the interpreted method in case | |
1683 // the method is synchronized | |
1684 int monitor_size = method->is_synchronized() ? | |
1685 1*frame::interpreter_frame_monitor_size() : 0; | |
1686 | |
1687 // total overhead size: entry_size + (saved rbp, thru expr stack bottom). | |
1688 // be sure to change this if you add/subtract anything to/from the overhead area | |
1689 const int overhead_size = -frame::interpreter_frame_initial_sp_offset; | |
1690 | |
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1691 const int method_stack = (method->max_locals() + method->max_stack()) * |
1506 | 1692 Interpreter::stackElementWords; |
0 | 1693 return overhead_size + method_stack + stub_code; |
1694 } | |
1695 | |
1696 //------------------------------------------------------------------------------------------------------------------------ | |
1697 // Exceptions | |
1698 | |
1699 void TemplateInterpreterGenerator::generate_throw_exception() { | |
1700 // Entry point in previous activation (i.e., if the caller was interpreted) | |
1701 Interpreter::_rethrow_exception_entry = __ pc(); | |
1295 | 1702 const Register thread = rcx; |
0 | 1703 |
1704 // Restore sp to interpreter_frame_last_sp even though we are going | |
1705 // to empty the expression stack for the exception processing. | |
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1706 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 1707 // rax,: exception |
1708 // rdx: return address/pc that threw exception | |
1709 __ restore_bcp(); // rsi points to call/send | |
1710 __ restore_locals(); | |
1711 | |
1712 // Entry point for exceptions thrown within interpreter code | |
1713 Interpreter::_throw_exception_entry = __ pc(); | |
1714 // expression stack is undefined here | |
1715 // rax,: exception | |
1716 // rsi: exception bcp | |
1717 __ verify_oop(rax); | |
1718 | |
1719 // expression stack must be empty before entering the VM in case of an exception | |
1720 __ empty_expression_stack(); | |
1721 __ empty_FPU_stack(); | |
1722 // find exception handler address and preserve exception oop | |
1723 __ call_VM(rdx, CAST_FROM_FN_PTR(address, InterpreterRuntime::exception_handler_for_exception), rax); | |
1724 // rax,: exception handler entry point | |
1725 // rdx: preserved exception oop | |
1726 // rsi: bcp for exception handler | |
1727 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
1728 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
1729 | |
1730 // If the exception is not handled in the current frame the frame is removed and | |
1731 // the exception is rethrown (i.e. exception continuation is _rethrow_exception). | |
1732 // | |
1733 // Note: At this point the bci is still the bxi for the instruction which caused | |
1734 // the exception and the expression stack is empty. Thus, for any VM calls | |
1735 // at this point, GC will find a legal oop map (with empty expression stack). | |
1736 | |
1737 // In current activation | |
1738 // tos: exception | |
1739 // rsi: exception bcp | |
1740 | |
1741 // | |
1742 // JVMTI PopFrame support | |
1743 // | |
1744 | |
1745 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
1746 __ empty_expression_stack(); | |
1747 __ empty_FPU_stack(); | |
1748 // Set the popframe_processing bit in pending_popframe_condition indicating that we are | |
1749 // currently handling popframe, so that call_VMs that may happen later do not trigger new | |
1750 // popframe handling cycles. | |
1295 | 1751 __ get_thread(thread); |
1752 __ movl(rdx, Address(thread, JavaThread::popframe_condition_offset())); | |
0 | 1753 __ orl(rdx, JavaThread::popframe_processing_bit); |
1295 | 1754 __ movl(Address(thread, JavaThread::popframe_condition_offset()), rdx); |
0 | 1755 |
1756 { | |
1757 // Check to see whether we are returning to a deoptimized frame. | |
1758 // (The PopFrame call ensures that the caller of the popped frame is | |
1759 // either interpreted or compiled and deoptimizes it if compiled.) | |
1760 // In this case, we can't call dispatch_next() after the frame is | |
1761 // popped, but instead must save the incoming arguments and restore | |
1762 // them after deoptimization has occurred. | |
1763 // | |
1764 // Note that we don't compare the return PC against the | |
1765 // deoptimization blob's unpack entry because of the presence of | |
1766 // adapter frames in C2. | |
1767 Label caller_not_deoptimized; | |
304 | 1768 __ movptr(rdx, Address(rbp, frame::return_addr_offset * wordSize)); |
0 | 1769 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::interpreter_contains), rdx); |
1770 __ testl(rax, rax); | |
1771 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
1772 | |
1773 // Compute size of arguments for saving when returning to deoptimized caller | |
1774 __ get_method(rax); | |
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1775 __ movptr(rax, Address(rax, Method::const_offset())); |
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1776 __ load_unsigned_short(rax, Address(rax, ConstMethod::size_of_parameters_offset())); |
1506 | 1777 __ shlptr(rax, Interpreter::logStackElementSize); |
0 | 1778 __ restore_locals(); |
304 | 1779 __ subptr(rdi, rax); |
1780 __ addptr(rdi, wordSize); | |
0 | 1781 // Save these arguments |
1295 | 1782 __ get_thread(thread); |
1783 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::popframe_preserve_args), thread, rax, rdi); | |
0 | 1784 |
1785 __ remove_activation(vtos, rdx, | |
1786 /* throw_monitor_exception */ false, | |
1787 /* install_monitor_exception */ false, | |
1788 /* notify_jvmdi */ false); | |
1789 | |
1790 // Inform deoptimization that it is responsible for restoring these arguments | |
1295 | 1791 __ get_thread(thread); |
1792 __ movl(Address(thread, JavaThread::popframe_condition_offset()), JavaThread::popframe_force_deopt_reexecution_bit); | |
0 | 1793 |
1794 // Continue in deoptimization handler | |
1795 __ jmp(rdx); | |
1796 | |
1797 __ bind(caller_not_deoptimized); | |
1798 } | |
1799 | |
1800 __ remove_activation(vtos, rdx, | |
1801 /* throw_monitor_exception */ false, | |
1802 /* install_monitor_exception */ false, | |
1803 /* notify_jvmdi */ false); | |
1804 | |
1805 // Finish with popframe handling | |
1806 // A previous I2C followed by a deoptimization might have moved the | |
1807 // outgoing arguments further up the stack. PopFrame expects the | |
1808 // mutations to those outgoing arguments to be preserved and other | |
1809 // constraints basically require this frame to look exactly as | |
1810 // though it had previously invoked an interpreted activation with | |
1811 // no space between the top of the expression stack (current | |
1812 // last_sp) and the top of stack. Rather than force deopt to | |
1813 // maintain this kind of invariant all the time we call a small | |
1814 // fixup routine to move the mutated arguments onto the top of our | |
1815 // expression stack if necessary. | |
304 | 1816 __ mov(rax, rsp); |
1817 __ movptr(rbx, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
1295 | 1818 __ get_thread(thread); |
0 | 1819 // PC must point into interpreter here |
1295 | 1820 __ set_last_Java_frame(thread, noreg, rbp, __ pc()); |
1821 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), thread, rax, rbx); | |
1822 __ get_thread(thread); | |
1823 __ reset_last_Java_frame(thread, true, true); | |
0 | 1824 // Restore the last_sp and null it out |
304 | 1825 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
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1826 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 1827 |
1828 __ restore_bcp(); | |
1829 __ restore_locals(); | |
1830 // The method data pointer was incremented already during | |
1831 // call profiling. We have to restore the mdp for the current bcp. | |
1832 if (ProfileInterpreter) { | |
1833 __ set_method_data_pointer_for_bcp(); | |
1834 } | |
1835 | |
1836 // Clear the popframe condition flag | |
1295 | 1837 __ get_thread(thread); |
1838 __ movl(Address(thread, JavaThread::popframe_condition_offset()), JavaThread::popframe_inactive); | |
0 | 1839 |
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1840 #if INCLUDE_JVMTI |
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1841 if (EnableInvokeDynamic) { |
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1842 Label L_done; |
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1843 const Register local0 = rdi; |
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1844 |
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1845 __ cmpb(Address(rsi, 0), Bytecodes::_invokestatic); |
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1846 __ jcc(Assembler::notEqual, L_done); |
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1847 |
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1848 // The member name argument must be restored if _invokestatic is re-executed after a PopFrame call. |
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1849 // Detect such a case in the InterpreterRuntime function and return the member name argument, or NULL. |
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1850 |
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1851 __ get_method(rdx); |
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1852 __ movptr(rax, Address(local0, 0)); |
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1853 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::member_name_arg_or_null), rax, rdx, rsi); |
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1854 |
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1855 __ testptr(rax, rax); |
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1856 __ jcc(Assembler::zero, L_done); |
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1857 |
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1858 __ movptr(Address(rbx, 0), rax); |
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1859 __ bind(L_done); |
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1860 } |
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1861 #endif // INCLUDE_JVMTI |
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1862 |
0 | 1863 __ dispatch_next(vtos); |
1864 // end of PopFrame support | |
1865 | |
1866 Interpreter::_remove_activation_entry = __ pc(); | |
1867 | |
1868 // preserve exception over this code sequence | |
1869 __ pop_ptr(rax); | |
1295 | 1870 __ get_thread(thread); |
1871 __ movptr(Address(thread, JavaThread::vm_result_offset()), rax); | |
0 | 1872 // remove the activation (without doing throws on illegalMonitorExceptions) |
1873 __ remove_activation(vtos, rdx, false, true, false); | |
1874 // restore exception | |
1295 | 1875 __ get_thread(thread); |
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1876 __ get_vm_result(rax, thread); |
0 | 1877 |
1878 // Inbetween activations - previous activation type unknown yet | |
1879 // compute continuation point - the continuation point expects | |
1880 // the following registers set up: | |
1881 // | |
1295 | 1882 // rax: exception |
0 | 1883 // rdx: return address/pc that threw exception |
1884 // rsp: expression stack of caller | |
1295 | 1885 // rbp: rbp, of caller |
304 | 1886 __ push(rax); // save exception |
1887 __ push(rdx); // save return address | |
1295 | 1888 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), thread, rdx); |
304 | 1889 __ mov(rbx, rax); // save exception handler |
1890 __ pop(rdx); // restore return address | |
1891 __ pop(rax); // restore exception | |
0 | 1892 // Note that an "issuing PC" is actually the next PC after the call |
1893 __ jmp(rbx); // jump to exception handler of caller | |
1894 } | |
1895 | |
1896 | |
1897 // | |
1898 // JVMTI ForceEarlyReturn support | |
1899 // | |
1900 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
1901 address entry = __ pc(); | |
1295 | 1902 const Register thread = rcx; |
0 | 1903 |
1904 __ restore_bcp(); | |
1905 __ restore_locals(); | |
1906 __ empty_expression_stack(); | |
1907 __ empty_FPU_stack(); | |
1908 __ load_earlyret_value(state); | |
1909 | |
1295 | 1910 __ get_thread(thread); |
1911 __ movptr(rcx, Address(thread, JavaThread::jvmti_thread_state_offset())); | |
0 | 1912 const Address cond_addr(rcx, JvmtiThreadState::earlyret_state_offset()); |
1913 | |
1914 // Clear the earlyret state | |
1915 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
1916 | |
1917 __ remove_activation(state, rsi, | |
1918 false, /* throw_monitor_exception */ | |
1919 false, /* install_monitor_exception */ | |
1920 true); /* notify_jvmdi */ | |
1921 __ jmp(rsi); | |
1922 return entry; | |
1923 } // end of ForceEarlyReturn support | |
1924 | |
1925 | |
1926 //------------------------------------------------------------------------------------------------------------------------ | |
1927 // Helper for vtos entry point generation | |
1928 | |
1929 void TemplateInterpreterGenerator::set_vtos_entry_points (Template* t, address& bep, address& cep, address& sep, address& aep, address& iep, address& lep, address& fep, address& dep, address& vep) { | |
1930 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
1931 Label L; | |
1932 fep = __ pc(); __ push(ftos); __ jmp(L); | |
1933 dep = __ pc(); __ push(dtos); __ jmp(L); | |
1934 lep = __ pc(); __ push(ltos); __ jmp(L); | |
1935 aep = __ pc(); __ push(atos); __ jmp(L); | |
1936 bep = cep = sep = // fall through | |
1937 iep = __ pc(); __ push(itos); // fall through | |
1938 vep = __ pc(); __ bind(L); // fall through | |
1939 generate_and_dispatch(t); | |
1940 } | |
1941 | |
1942 //------------------------------------------------------------------------------------------------------------------------ | |
1943 // Generation of individual instructions | |
1944 | |
1945 // helpers for generate_and_dispatch | |
1946 | |
1947 | |
1948 | |
1949 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
1950 : TemplateInterpreterGenerator(code) { | |
1951 generate_all(); // down here so it can be "virtual" | |
1952 } | |
1953 | |
1954 //------------------------------------------------------------------------------------------------------------------------ | |
1955 | |
1956 // Non-product code | |
1957 #ifndef PRODUCT | |
1958 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
1959 address entry = __ pc(); | |
1960 | |
1961 // prepare expression stack | |
304 | 1962 __ pop(rcx); // pop return address so expression stack is 'pure' |
0 | 1963 __ push(state); // save tosca |
1964 | |
1965 // pass tosca registers as arguments & call tracer | |
1966 __ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), rcx, rax, rdx); | |
304 | 1967 __ mov(rcx, rax); // make sure return address is not destroyed by pop(state) |
0 | 1968 __ pop(state); // restore tosca |
1969 | |
1970 // return | |
1971 __ jmp(rcx); | |
1972 | |
1973 return entry; | |
1974 } | |
1975 | |
1976 | |
1977 void TemplateInterpreterGenerator::count_bytecode() { | |
304 | 1978 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); |
0 | 1979 } |
1980 | |
1981 | |
1982 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
304 | 1983 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); |
0 | 1984 } |
1985 | |
1986 | |
1987 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
1988 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
1989 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
1990 __ orl(rbx, ((int)t->bytecode()) << BytecodePairHistogram::log2_number_of_codes); | |
1991 ExternalAddress table((address) BytecodePairHistogram::_counters); | |
1992 Address index(noreg, rbx, Address::times_4); | |
304 | 1993 __ incrementl(ArrayAddress(table, index)); |
0 | 1994 } |
1995 | |
1996 | |
1997 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
1998 // Call a little run-time stub to avoid blow-up for each bytecode. | |
1999 // The run-time runtime saves the right registers, depending on | |
2000 // the tosca in-state for the given template. | |
2001 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
2002 "entry must have been generated"); | |
2003 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); | |
2004 } | |
2005 | |
2006 | |
2007 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
2008 Label L; | |
2009 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
2010 StopInterpreterAt); | |
2011 __ jcc(Assembler::notEqual, L); | |
2012 __ int3(); | |
2013 __ bind(L); | |
2014 } | |
2015 #endif // !PRODUCT | |
2016 #endif // CC_INTERP |