Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateInterpreter_x86_32.cpp @ 7780:550c952f5d3f
Merge
author | Christian Humer <christian.humer@gmail.com> |
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date | Tue, 12 Feb 2013 16:06:20 +0100 |
parents | fd74228fd5ca |
children | db9981fd3124 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
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26 #include "asm/macroAssembler.hpp" |
1972 | 27 #include "interpreter/bytecodeHistogram.hpp" |
28 #include "interpreter/interpreter.hpp" | |
29 #include "interpreter/interpreterGenerator.hpp" | |
30 #include "interpreter/interpreterRuntime.hpp" | |
31 #include "interpreter/templateTable.hpp" | |
32 #include "oops/arrayOop.hpp" | |
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33 #include "oops/methodData.hpp" |
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34 #include "oops/method.hpp" |
1972 | 35 #include "oops/oop.inline.hpp" |
36 #include "prims/jvmtiExport.hpp" | |
37 #include "prims/jvmtiThreadState.hpp" | |
38 #include "runtime/arguments.hpp" | |
39 #include "runtime/deoptimization.hpp" | |
40 #include "runtime/frame.inline.hpp" | |
41 #include "runtime/sharedRuntime.hpp" | |
42 #include "runtime/stubRoutines.hpp" | |
43 #include "runtime/synchronizer.hpp" | |
44 #include "runtime/timer.hpp" | |
45 #include "runtime/vframeArray.hpp" | |
46 #include "utilities/debug.hpp" | |
0 | 47 |
48 #define __ _masm-> | |
49 | |
50 | |
51 #ifndef CC_INTERP | |
52 const int method_offset = frame::interpreter_frame_method_offset * wordSize; | |
53 const int bci_offset = frame::interpreter_frame_bcx_offset * wordSize; | |
54 const int locals_offset = frame::interpreter_frame_locals_offset * wordSize; | |
55 | |
56 //------------------------------------------------------------------------------------------------------------------------ | |
57 | |
58 address TemplateInterpreterGenerator::generate_StackOverflowError_handler() { | |
59 address entry = __ pc(); | |
60 | |
61 // Note: There should be a minimal interpreter frame set up when stack | |
62 // overflow occurs since we check explicitly for it now. | |
63 // | |
64 #ifdef ASSERT | |
65 { Label L; | |
304 | 66 __ lea(rax, Address(rbp, |
0 | 67 frame::interpreter_frame_monitor_block_top_offset * wordSize)); |
304 | 68 __ cmpptr(rax, rsp); // rax, = maximal rsp for current rbp, |
0 | 69 // (stack grows negative) |
70 __ jcc(Assembler::aboveEqual, L); // check if frame is complete | |
71 __ stop ("interpreter frame not set up"); | |
72 __ bind(L); | |
73 } | |
74 #endif // ASSERT | |
75 // Restore bcp under the assumption that the current frame is still | |
76 // interpreted | |
77 __ restore_bcp(); | |
78 | |
79 // expression stack must be empty before entering the VM if an exception | |
80 // happened | |
81 __ empty_expression_stack(); | |
82 __ empty_FPU_stack(); | |
83 // throw exception | |
84 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_StackOverflowError)); | |
85 return entry; | |
86 } | |
87 | |
88 address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(const char* name) { | |
89 address entry = __ pc(); | |
90 // expression stack must be empty before entering the VM if an exception happened | |
91 __ empty_expression_stack(); | |
92 __ empty_FPU_stack(); | |
93 // setup parameters | |
94 // ??? convention: expect aberrant index in register rbx, | |
95 __ lea(rax, ExternalAddress((address)name)); | |
96 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException), rax, rbx); | |
97 return entry; | |
98 } | |
99 | |
100 address TemplateInterpreterGenerator::generate_ClassCastException_handler() { | |
101 address entry = __ pc(); | |
102 // object is at TOS | |
304 | 103 __ pop(rax); |
0 | 104 // expression stack must be empty before entering the VM if an exception |
105 // happened | |
106 __ empty_expression_stack(); | |
107 __ empty_FPU_stack(); | |
108 __ call_VM(noreg, | |
109 CAST_FROM_FN_PTR(address, | |
110 InterpreterRuntime::throw_ClassCastException), | |
111 rax); | |
112 return entry; | |
113 } | |
114 | |
115 address TemplateInterpreterGenerator::generate_exception_handler_common(const char* name, const char* message, bool pass_oop) { | |
116 assert(!pass_oop || message == NULL, "either oop or message but not both"); | |
117 address entry = __ pc(); | |
118 if (pass_oop) { | |
119 // object is at TOS | |
304 | 120 __ pop(rbx); |
0 | 121 } |
122 // expression stack must be empty before entering the VM if an exception happened | |
123 __ empty_expression_stack(); | |
124 __ empty_FPU_stack(); | |
125 // setup parameters | |
126 __ lea(rax, ExternalAddress((address)name)); | |
127 if (pass_oop) { | |
128 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_klass_exception), rax, rbx); | |
129 } else { | |
130 if (message != NULL) { | |
131 __ lea(rbx, ExternalAddress((address)message)); | |
132 } else { | |
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133 __ movptr(rbx, NULL_WORD); |
0 | 134 } |
135 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), rax, rbx); | |
136 } | |
137 // throw exception | |
138 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
139 return entry; | |
140 } | |
141 | |
142 | |
143 address TemplateInterpreterGenerator::generate_continuation_for(TosState state) { | |
144 address entry = __ pc(); | |
145 // NULL last_sp until next java call | |
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146 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 147 __ dispatch_next(state); |
148 return entry; | |
149 } | |
150 | |
151 | |
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152 address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step) { |
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153 TosState incoming_state = state; |
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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 ((incoming_state == ftos && UseSSE < 1) || (incoming_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 ((incoming_state == ftos && UseSSE < 1) || (incoming_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 (incoming_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 (incoming_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 Label L_got_cache, L_giant_index; |
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197 if (EnableInvokeDynamic) { |
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198 __ cmpb(Address(rsi, 0), Bytecodes::_invokedynamic); |
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199 __ jcc(Assembler::equal, L_giant_index); |
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200 } |
1565 | 201 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u2)); |
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202 __ bind(L_got_cache); |
0 | 203 __ movl(rbx, Address(rbx, rcx, |
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204 Address::times_ptr, ConstantPoolCache::base_offset() + |
0 | 205 ConstantPoolCacheEntry::flags_offset())); |
304 | 206 __ andptr(rbx, 0xFF); |
207 __ lea(rsp, Address(rsp, rbx, Interpreter::stackElementScale())); | |
0 | 208 __ dispatch_next(state, step); |
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209 |
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210 // out of the main line of code... |
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211 if (EnableInvokeDynamic) { |
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212 __ bind(L_giant_index); |
1565 | 213 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u4)); |
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214 __ jmp(L_got_cache); |
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215 } |
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216 |
0 | 217 return entry; |
218 } | |
219 | |
220 | |
221 address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, int step) { | |
222 address entry = __ pc(); | |
223 | |
224 // In SSE mode, FP results are in xmm0 | |
225 if (state == ftos && UseSSE > 0) { | |
304 | 226 __ subptr(rsp, wordSize); |
0 | 227 __ movflt(Address(rsp, 0), xmm0); |
228 __ fld_s(Address(rsp, 0)); | |
304 | 229 __ addptr(rsp, wordSize); |
0 | 230 } else if (state == dtos && UseSSE >= 2) { |
304 | 231 __ subptr(rsp, 2*wordSize); |
0 | 232 __ movdbl(Address(rsp, 0), xmm0); |
233 __ fld_d(Address(rsp, 0)); | |
304 | 234 __ addptr(rsp, 2*wordSize); |
0 | 235 } |
236 | |
237 __ MacroAssembler::verify_FPU(state == ftos || state == dtos ? 1 : 0, "generate_deopt_entry_for in interpreter"); | |
238 | |
239 // The stack is not extended by deopt but we must NULL last_sp as this | |
240 // entry is like a "return". | |
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241 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 242 __ restore_bcp(); |
243 __ restore_locals(); | |
244 // handle exceptions | |
245 { Label L; | |
246 const Register thread = rcx; | |
247 __ get_thread(thread); | |
304 | 248 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
0 | 249 __ jcc(Assembler::zero, L); |
250 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); | |
251 __ should_not_reach_here(); | |
252 __ bind(L); | |
253 } | |
254 __ dispatch_next(state, step); | |
255 return entry; | |
256 } | |
257 | |
258 | |
259 int AbstractInterpreter::BasicType_as_index(BasicType type) { | |
260 int i = 0; | |
261 switch (type) { | |
262 case T_BOOLEAN: i = 0; break; | |
263 case T_CHAR : i = 1; break; | |
264 case T_BYTE : i = 2; break; | |
265 case T_SHORT : i = 3; break; | |
266 case T_INT : // fall through | |
267 case T_LONG : // fall through | |
268 case T_VOID : i = 4; break; | |
269 case T_FLOAT : i = 5; break; // have to treat float and double separately for SSE | |
270 case T_DOUBLE : i = 6; break; | |
271 case T_OBJECT : // fall through | |
272 case T_ARRAY : i = 7; break; | |
273 default : ShouldNotReachHere(); | |
274 } | |
275 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds"); | |
276 return i; | |
277 } | |
278 | |
279 | |
280 address TemplateInterpreterGenerator::generate_result_handler_for(BasicType type) { | |
281 address entry = __ pc(); | |
282 switch (type) { | |
283 case T_BOOLEAN: __ c2bool(rax); break; | |
304 | 284 case T_CHAR : __ andptr(rax, 0xFFFF); break; |
0 | 285 case T_BYTE : __ sign_extend_byte (rax); break; |
286 case T_SHORT : __ sign_extend_short(rax); break; | |
287 case T_INT : /* nothing to do */ break; | |
288 case T_DOUBLE : | |
289 case T_FLOAT : | |
290 { const Register t = InterpreterRuntime::SignatureHandlerGenerator::temp(); | |
304 | 291 __ pop(t); // remove return address first |
0 | 292 // Must return a result for interpreter or compiler. In SSE |
293 // mode, results are returned in xmm0 and the FPU stack must | |
294 // be empty. | |
295 if (type == T_FLOAT && UseSSE >= 1) { | |
296 // Load ST0 | |
297 __ fld_d(Address(rsp, 0)); | |
298 // Store as float and empty fpu stack | |
299 __ fstp_s(Address(rsp, 0)); | |
300 // and reload | |
301 __ movflt(xmm0, Address(rsp, 0)); | |
302 } else if (type == T_DOUBLE && UseSSE >= 2 ) { | |
303 __ movdbl(xmm0, Address(rsp, 0)); | |
304 } else { | |
305 // restore ST0 | |
306 __ fld_d(Address(rsp, 0)); | |
307 } | |
308 // and pop the temp | |
304 | 309 __ addptr(rsp, 2 * wordSize); |
310 __ push(t); // restore return address | |
0 | 311 } |
312 break; | |
313 case T_OBJECT : | |
314 // retrieve result from frame | |
304 | 315 __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); |
0 | 316 // and verify it |
317 __ verify_oop(rax); | |
318 break; | |
319 default : ShouldNotReachHere(); | |
320 } | |
321 __ ret(0); // return from result handler | |
322 return entry; | |
323 } | |
324 | |
325 address TemplateInterpreterGenerator::generate_safept_entry_for(TosState state, address runtime_entry) { | |
326 address entry = __ pc(); | |
327 __ push(state); | |
328 __ call_VM(noreg, runtime_entry); | |
329 __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); | |
330 return entry; | |
331 } | |
332 | |
333 | |
334 // Helpers for commoning out cases in the various type of method entries. | |
335 // | |
336 | |
337 // increment invocation count & check for overflow | |
338 // | |
339 // Note: checking for negative value instead of overflow | |
340 // so we have a 'sticky' overflow test | |
341 // | |
342 // rbx,: method | |
343 // rcx: invocation counter | |
344 // | |
345 void InterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) { | |
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346 const Address invocation_counter(rbx, in_bytes(Method::invocation_counter_offset()) + |
1783 | 347 in_bytes(InvocationCounter::counter_offset())); |
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348 // Note: In tiered we increment either counters in Method* or in MDO depending if we're profiling or not. |
1783 | 349 if (TieredCompilation) { |
350 int increment = InvocationCounter::count_increment; | |
351 int mask = ((1 << Tier0InvokeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
352 Label no_mdo, done; | |
353 if (ProfileInterpreter) { | |
354 // Are we profiling? | |
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355 __ movptr(rax, Address(rbx, Method::method_data_offset())); |
1783 | 356 __ testptr(rax, rax); |
357 __ jccb(Assembler::zero, no_mdo); | |
358 // Increment counter in the MDO | |
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359 const Address mdo_invocation_counter(rax, in_bytes(MethodData::invocation_counter_offset()) + |
1783 | 360 in_bytes(InvocationCounter::counter_offset())); |
361 __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rcx, false, Assembler::zero, overflow); | |
362 __ jmpb(done); | |
363 } | |
364 __ bind(no_mdo); | |
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365 // Increment counter in Method* (we don't need to load it, it's in rcx). |
1783 | 366 __ increment_mask_and_jump(invocation_counter, increment, mask, rcx, true, Assembler::zero, overflow); |
367 __ bind(done); | |
368 } else { | |
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369 const Address backedge_counter (rbx, Method::backedge_counter_offset() + |
1783 | 370 InvocationCounter::counter_offset()); |
0 | 371 |
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372 if (ProfileInterpreter) { // %%% Merge this into MethodData* |
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373 __ incrementl(Address(rbx,Method::interpreter_invocation_counter_offset())); |
1783 | 374 } |
375 // Update standard invocation counters | |
376 __ movl(rax, backedge_counter); // load backedge counter | |
377 | |
378 __ incrementl(rcx, InvocationCounter::count_increment); | |
379 __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits | |
380 | |
381 __ movl(invocation_counter, rcx); // save invocation count | |
382 __ addl(rcx, rax); // add both counters | |
0 | 383 |
1783 | 384 // profile_method is non-null only for interpreted method so |
385 // profile_method != NULL == !native_call | |
386 // BytecodeInterpreter only calls for native so code is elided. | |
387 | |
388 if (ProfileInterpreter && profile_method != NULL) { | |
389 // Test to see if we should create a method data oop | |
390 __ cmp32(rcx, | |
391 ExternalAddress((address)&InvocationCounter::InterpreterProfileLimit)); | |
392 __ jcc(Assembler::less, *profile_method_continue); | |
393 | |
394 // if no method data exists, go to profile_method | |
395 __ test_method_data_pointer(rax, *profile_method); | |
396 } | |
397 | |
0 | 398 __ cmp32(rcx, |
1783 | 399 ExternalAddress((address)&InvocationCounter::InterpreterInvocationLimit)); |
400 __ jcc(Assembler::aboveEqual, *overflow); | |
0 | 401 } |
402 } | |
403 | |
404 void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { | |
405 | |
406 // Asm interpreter on entry | |
407 // rdi - locals | |
408 // rsi - bcp | |
409 // rbx, - method | |
410 // rdx - cpool | |
411 // rbp, - interpreter frame | |
412 | |
413 // C++ interpreter on entry | |
414 // rsi - new interpreter state pointer | |
415 // rbp - interpreter frame pointer | |
416 // rbx - method | |
417 | |
418 // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] | |
419 // rbx, - method | |
420 // rcx - rcvr (assuming there is one) | |
421 // top of stack return address of interpreter caller | |
422 // rsp - sender_sp | |
423 | |
424 // C++ interpreter only | |
425 // rsi - previous interpreter state pointer | |
426 | |
427 // InterpreterRuntime::frequency_counter_overflow takes one argument | |
428 // indicating if the counter overflow occurs at a backwards branch (non-NULL bcp). | |
429 // The call returns the address of the verified entry point for the method or NULL | |
430 // if the compilation did not complete (either went background or bailed out). | |
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431 __ movptr(rax, (intptr_t)false); |
0 | 432 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rax); |
433 | |
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434 __ movptr(rbx, Address(rbp, method_offset)); // restore Method* |
0 | 435 |
436 // Preserve invariant that rsi/rdi contain bcp/locals of sender frame | |
437 // and jump to the interpreted entry. | |
438 __ jmp(*do_continue, relocInfo::none); | |
439 | |
440 } | |
441 | |
442 void InterpreterGenerator::generate_stack_overflow_check(void) { | |
443 // see if we've got enough room on the stack for locals plus overhead. | |
444 // the expression stack grows down incrementally, so the normal guard | |
445 // page mechanism will work for that. | |
446 // | |
447 // Registers live on entry: | |
448 // | |
449 // Asm interpreter | |
450 // rdx: number of additional locals this frame needs (what we must check) | |
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451 // rbx,: Method* |
0 | 452 |
453 // destroyed on exit | |
454 // rax, | |
455 | |
456 // NOTE: since the additional locals are also always pushed (wasn't obvious in | |
457 // generate_method_entry) so the guard should work for them too. | |
458 // | |
459 | |
460 // monitor entry size: see picture of stack set (generate_method_entry) and frame_x86.hpp | |
461 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
462 | |
463 // total overhead size: entry_size + (saved rbp, thru expr stack bottom). | |
464 // be sure to change this if you add/subtract anything to/from the overhead area | |
465 const int overhead_size = -(frame::interpreter_frame_initial_sp_offset*wordSize) + entry_size; | |
466 | |
467 const int page_size = os::vm_page_size(); | |
468 | |
469 Label after_frame_check; | |
470 | |
471 // see if the frame is greater than one page in size. If so, | |
472 // then we need to verify there is enough stack space remaining | |
473 // for the additional locals. | |
1506 | 474 __ cmpl(rdx, (page_size - overhead_size)/Interpreter::stackElementSize); |
0 | 475 __ jcc(Assembler::belowEqual, after_frame_check); |
476 | |
477 // compute rsp as if this were going to be the last frame on | |
478 // the stack before the red zone | |
479 | |
480 Label after_frame_check_pop; | |
481 | |
304 | 482 __ push(rsi); |
0 | 483 |
484 const Register thread = rsi; | |
485 | |
486 __ get_thread(thread); | |
487 | |
488 const Address stack_base(thread, Thread::stack_base_offset()); | |
489 const Address stack_size(thread, Thread::stack_size_offset()); | |
490 | |
491 // locals + overhead, in bytes | |
304 | 492 __ lea(rax, Address(noreg, rdx, Interpreter::stackElementScale(), overhead_size)); |
0 | 493 |
494 #ifdef ASSERT | |
495 Label stack_base_okay, stack_size_okay; | |
496 // verify that thread stack base is non-zero | |
304 | 497 __ cmpptr(stack_base, (int32_t)NULL_WORD); |
0 | 498 __ jcc(Assembler::notEqual, stack_base_okay); |
499 __ stop("stack base is zero"); | |
500 __ bind(stack_base_okay); | |
501 // verify that thread stack size is non-zero | |
304 | 502 __ cmpptr(stack_size, 0); |
0 | 503 __ jcc(Assembler::notEqual, stack_size_okay); |
504 __ stop("stack size is zero"); | |
505 __ bind(stack_size_okay); | |
506 #endif | |
507 | |
508 // Add stack base to locals and subtract stack size | |
304 | 509 __ addptr(rax, stack_base); |
510 __ subptr(rax, stack_size); | |
0 | 511 |
512 // Use the maximum number of pages we might bang. | |
513 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : | |
514 (StackRedPages+StackYellowPages); | |
304 | 515 __ addptr(rax, max_pages * page_size); |
0 | 516 |
517 // check against the current stack bottom | |
304 | 518 __ cmpptr(rsp, rax); |
0 | 519 __ jcc(Assembler::above, after_frame_check_pop); |
520 | |
304 | 521 __ pop(rsi); // get saved bcp / (c++ prev state ). |
0 | 522 |
4743 | 523 // Restore sender's sp as SP. This is necessary if the sender's |
524 // frame is an extended compiled frame (see gen_c2i_adapter()) | |
525 // and safer anyway in case of JSR292 adaptations. | |
0 | 526 |
4743 | 527 __ pop(rax); // return address must be moved if SP is changed |
528 __ mov(rsp, rsi); | |
529 __ push(rax); | |
530 | |
531 // Note: the restored frame is not necessarily interpreted. | |
532 // Use the shared runtime version of the StackOverflowError. | |
533 assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated"); | |
534 __ jump(ExternalAddress(StubRoutines::throw_StackOverflowError_entry())); | |
0 | 535 // all done with frame size check |
536 __ bind(after_frame_check_pop); | |
304 | 537 __ pop(rsi); |
0 | 538 |
539 __ bind(after_frame_check); | |
540 } | |
541 | |
542 // Allocate monitor and lock method (asm interpreter) | |
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543 // rbx, - Method* |
0 | 544 // |
545 void InterpreterGenerator::lock_method(void) { | |
546 // synchronize method | |
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547 const Address access_flags (rbx, Method::access_flags_offset()); |
0 | 548 const Address monitor_block_top (rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); |
549 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
550 | |
551 #ifdef ASSERT | |
552 { Label L; | |
553 __ movl(rax, access_flags); | |
554 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
555 __ jcc(Assembler::notZero, L); | |
556 __ stop("method doesn't need synchronization"); | |
557 __ bind(L); | |
558 } | |
559 #endif // ASSERT | |
560 // get synchronization object | |
561 { Label done; | |
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562 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
0 | 563 __ movl(rax, access_flags); |
564 __ testl(rax, JVM_ACC_STATIC); | |
304 | 565 __ movptr(rax, Address(rdi, Interpreter::local_offset_in_bytes(0))); // get receiver (assume this is frequent case) |
0 | 566 __ jcc(Assembler::zero, done); |
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567 __ movptr(rax, Address(rbx, Method::const_offset())); |
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568 __ movptr(rax, Address(rax, ConstMethod::constants_offset())); |
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569 __ movptr(rax, Address(rax, ConstantPool::pool_holder_offset_in_bytes())); |
304 | 570 __ movptr(rax, Address(rax, mirror_offset)); |
0 | 571 __ bind(done); |
572 } | |
573 // add space for monitor & lock | |
304 | 574 __ subptr(rsp, entry_size); // add space for a monitor entry |
575 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
576 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); // store object | |
577 __ mov(rdx, rsp); // object address | |
0 | 578 __ lock_object(rdx); |
579 } | |
580 | |
581 // | |
582 // Generate a fixed interpreter frame. This is identical setup for interpreted methods | |
583 // and for native methods hence the shared code. | |
584 | |
585 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
586 // initialize fixed part of activation frame | |
304 | 587 __ push(rax); // save return address |
0 | 588 __ enter(); // save old & set new rbp, |
589 | |
590 | |
304 | 591 __ push(rsi); // set sender sp |
592 __ push((int32_t)NULL_WORD); // leave last_sp as null | |
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593 __ movptr(rsi, Address(rbx,Method::const_offset())); // get ConstMethod* |
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594 __ lea(rsi, Address(rsi,ConstMethod::codes_offset())); // get codebase |
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595 __ push(rbx); // save Method* |
0 | 596 if (ProfileInterpreter) { |
597 Label method_data_continue; | |
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598 __ movptr(rdx, Address(rbx, in_bytes(Method::method_data_offset()))); |
304 | 599 __ testptr(rdx, rdx); |
0 | 600 __ jcc(Assembler::zero, method_data_continue); |
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601 __ addptr(rdx, in_bytes(MethodData::data_offset())); |
0 | 602 __ bind(method_data_continue); |
304 | 603 __ push(rdx); // set the mdp (method data pointer) |
0 | 604 } else { |
304 | 605 __ push(0); |
0 | 606 } |
607 | |
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608 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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609 __ movptr(rdx, Address(rdx, ConstMethod::constants_offset())); |
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610 __ movptr(rdx, Address(rdx, ConstantPool::cache_offset_in_bytes())); |
304 | 611 __ push(rdx); // set constant pool cache |
612 __ push(rdi); // set locals pointer | |
0 | 613 if (native_call) { |
304 | 614 __ push(0); // no bcp |
0 | 615 } else { |
304 | 616 __ push(rsi); // set bcp |
0 | 617 } |
304 | 618 __ push(0); // reserve word for pointer to expression stack bottom |
619 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
0 | 620 } |
621 | |
622 // End of helpers | |
623 | |
624 // | |
625 // Various method entries | |
626 //------------------------------------------------------------------------------------------------------------------------ | |
627 // | |
628 // | |
629 | |
630 // Call an accessor method (assuming it is resolved, otherwise drop into vanilla (slow path) entry | |
631 | |
632 address InterpreterGenerator::generate_accessor_entry(void) { | |
633 | |
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634 // rbx,: Method* |
0 | 635 // rcx: receiver (preserve for slow entry into asm interpreter) |
636 | |
637 // rsi: senderSP must preserved for slow path, set SP to it on fast path | |
638 | |
639 address entry_point = __ pc(); | |
640 Label xreturn_path; | |
641 | |
642 // do fastpath for resolved accessor methods | |
643 if (UseFastAccessorMethods) { | |
644 Label slow_path; | |
645 // If we need a safepoint check, generate full interpreter entry. | |
646 ExternalAddress state(SafepointSynchronize::address_of_state()); | |
647 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
648 SafepointSynchronize::_not_synchronized); | |
649 | |
650 __ jcc(Assembler::notEqual, slow_path); | |
651 // ASM/C++ Interpreter | |
652 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites thereof; parameter size = 1 | |
653 // Note: We can only use this code if the getfield has been resolved | |
654 // and if we don't have a null-pointer exception => check for | |
655 // these conditions first and use slow path if necessary. | |
656 // rbx,: method | |
657 // rcx: receiver | |
304 | 658 __ movptr(rax, Address(rsp, wordSize)); |
0 | 659 |
660 // check if local 0 != NULL and read field | |
304 | 661 __ testptr(rax, rax); |
0 | 662 __ jcc(Assembler::zero, slow_path); |
663 | |
664 // read first instruction word and extract bytecode @ 1 and index @ 2 | |
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665 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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666 __ movptr(rdi, Address(rdx, ConstMethod::constants_offset())); |
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667 __ movl(rdx, Address(rdx, ConstMethod::codes_offset())); |
0 | 668 // Shift codes right to get the index on the right. |
669 // The bytecode fetched looks like <index><0xb4><0x2a> | |
670 __ shrl(rdx, 2*BitsPerByte); | |
671 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
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672 __ movptr(rdi, Address(rdi, ConstantPool::cache_offset_in_bytes())); |
0 | 673 |
674 // rax,: local 0 | |
675 // rbx,: method | |
676 // rcx: receiver - do not destroy since it is needed for slow path! | |
677 // rcx: scratch | |
678 // rdx: constant pool cache index | |
679 // rdi: constant pool cache | |
680 // rsi: sender sp | |
681 | |
682 // check if getfield has been resolved and read constant pool cache entry | |
683 // check the validity of the cache entry by testing whether _indices field | |
684 // contains Bytecode::_getfield in b1 byte. | |
685 assert(in_words(ConstantPoolCacheEntry::size()) == 4, "adjust shift below"); | |
686 __ movl(rcx, | |
687 Address(rdi, | |
688 rdx, | |
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689 Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::indices_offset())); |
0 | 690 __ shrl(rcx, 2*BitsPerByte); |
691 __ andl(rcx, 0xFF); | |
692 __ cmpl(rcx, Bytecodes::_getfield); | |
693 __ jcc(Assembler::notEqual, slow_path); | |
694 | |
695 // Note: constant pool entry is not valid before bytecode is resolved | |
304 | 696 __ movptr(rcx, |
697 Address(rdi, | |
698 rdx, | |
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699 Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::f2_offset())); |
0 | 700 __ movl(rdx, |
701 Address(rdi, | |
702 rdx, | |
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703 Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset())); |
0 | 704 |
705 Label notByte, notShort, notChar; | |
706 const Address field_address (rax, rcx, Address::times_1); | |
707 | |
708 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
709 // because they are different sizes. | |
710 // Use the type from the constant pool cache | |
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711 __ shrl(rdx, ConstantPoolCacheEntry::tos_state_shift); |
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712 // Make sure we don't need to mask rdx after the above shift |
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713 ConstantPoolCacheEntry::verify_tos_state_shift(); |
0 | 714 __ cmpl(rdx, btos); |
715 __ jcc(Assembler::notEqual, notByte); | |
716 __ load_signed_byte(rax, field_address); | |
717 __ jmp(xreturn_path); | |
718 | |
719 __ bind(notByte); | |
720 __ cmpl(rdx, stos); | |
721 __ jcc(Assembler::notEqual, notShort); | |
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722 __ load_signed_short(rax, field_address); |
0 | 723 __ jmp(xreturn_path); |
724 | |
725 __ bind(notShort); | |
726 __ cmpl(rdx, ctos); | |
727 __ jcc(Assembler::notEqual, notChar); | |
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728 __ load_unsigned_short(rax, field_address); |
0 | 729 __ jmp(xreturn_path); |
730 | |
731 __ bind(notChar); | |
732 #ifdef ASSERT | |
733 Label okay; | |
734 __ cmpl(rdx, atos); | |
735 __ jcc(Assembler::equal, okay); | |
736 __ cmpl(rdx, itos); | |
737 __ jcc(Assembler::equal, okay); | |
738 __ stop("what type is this?"); | |
739 __ bind(okay); | |
740 #endif // ASSERT | |
741 // All the rest are a 32 bit wordsize | |
304 | 742 // This is ok for now. Since fast accessors should be going away |
743 __ movptr(rax, field_address); | |
0 | 744 |
745 __ bind(xreturn_path); | |
746 | |
747 // _ireturn/_areturn | |
304 | 748 __ pop(rdi); // get return address |
749 __ mov(rsp, rsi); // set sp to sender sp | |
0 | 750 __ jmp(rdi); |
751 | |
752 // generate a vanilla interpreter entry as the slow path | |
753 __ bind(slow_path); | |
754 | |
755 (void) generate_normal_entry(false); | |
756 return entry_point; | |
757 } | |
758 return NULL; | |
759 | |
760 } | |
761 | |
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762 // Method entry for java.lang.ref.Reference.get. |
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763 address InterpreterGenerator::generate_Reference_get_entry(void) { |
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764 #ifndef SERIALGC |
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765 // Code: _aload_0, _getfield, _areturn |
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766 // parameter size = 1 |
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767 // |
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768 // The code that gets generated by this routine is split into 2 parts: |
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769 // 1. The "intrinsified" code for G1 (or any SATB based GC), |
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770 // 2. The slow path - which is an expansion of the regular method entry. |
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771 // |
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772 // Notes:- |
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773 // * In the G1 code we do not check whether we need to block for |
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774 // a safepoint. If G1 is enabled then we must execute the specialized |
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775 // code for Reference.get (except when the Reference object is null) |
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776 // so that we can log the value in the referent field with an SATB |
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777 // update buffer. |
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778 // If the code for the getfield template is modified so that the |
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779 // G1 pre-barrier code is executed when the current method is |
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780 // Reference.get() then going through the normal method entry |
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781 // will be fine. |
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782 // * The G1 code below can, however, check the receiver object (the instance |
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783 // of java.lang.Reference) and jump to the slow path if null. If the |
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784 // Reference object is null then we obviously cannot fetch the referent |
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785 // and so we don't need to call the G1 pre-barrier. Thus we can use the |
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786 // regular method entry code to generate the NPE. |
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787 // |
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788 // This code is based on generate_accessor_enty. |
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789 |
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790 // rbx,: Method* |
3249
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791 // rcx: receiver (preserve for slow entry into asm interpreter) |
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792 |
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793 // rsi: senderSP must preserved for slow path, set SP to it on fast path |
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794 |
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795 address entry = __ pc(); |
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796 |
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797 const int referent_offset = java_lang_ref_Reference::referent_offset; |
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798 guarantee(referent_offset > 0, "referent offset not initialized"); |
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799 |
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800 if (UseG1GC) { |
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801 Label slow_path; |
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802 |
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803 // Check if local 0 != NULL |
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804 // If the receiver is null then it is OK to jump to the slow path. |
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805 __ movptr(rax, Address(rsp, wordSize)); |
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806 __ testptr(rax, rax); |
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807 __ jcc(Assembler::zero, slow_path); |
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808 |
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809 // rax: local 0 (must be preserved across the G1 barrier call) |
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810 // |
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811 // rbx: method (at this point it's scratch) |
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812 // rcx: receiver (at this point it's scratch) |
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813 // rdx: scratch |
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814 // rdi: scratch |
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815 // |
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816 // rsi: sender sp |
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817 |
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818 // Preserve the sender sp in case the pre-barrier |
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819 // calls the runtime |
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820 __ push(rsi); |
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821 |
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822 // Load the value of the referent field. |
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823 const Address field_address(rax, referent_offset); |
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824 __ movptr(rax, field_address); |
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825 |
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826 // Generate the G1 pre-barrier code to log the value of |
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827 // the referent field in an SATB buffer. |
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828 __ get_thread(rcx); |
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829 __ g1_write_barrier_pre(noreg /* obj */, |
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830 rax /* pre_val */, |
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831 rcx /* thread */, |
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832 rbx /* tmp */, |
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833 true /* tosca_save */, |
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834 true /* expand_call */); |
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835 |
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836 // _areturn |
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837 __ pop(rsi); // get sender sp |
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838 __ pop(rdi); // get return address |
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839 __ mov(rsp, rsi); // set sp to sender sp |
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840 __ jmp(rdi); |
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841 |
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842 __ bind(slow_path); |
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843 (void) generate_normal_entry(false); |
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844 |
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845 return entry; |
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846 } |
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847 #endif // SERIALGC |
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848 |
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849 // If G1 is not enabled then attempt to go through the accessor entry point |
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850 // Reference.get is an accessor |
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851 return generate_accessor_entry(); |
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852 } |
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853 |
0 | 854 // |
855 // Interpreter stub for calling a native method. (asm interpreter) | |
856 // This sets up a somewhat different looking stack for calling the native method | |
857 // than the typical interpreter frame setup. | |
858 // | |
859 | |
860 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
861 // determine code generation flags | |
862 bool inc_counter = UseCompiler || CountCompiledCalls; | |
863 | |
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864 // rbx,: Method* |
0 | 865 // rsi: sender sp |
866 // rsi: previous interpreter state (C++ interpreter) must preserve | |
867 address entry_point = __ pc(); | |
868 | |
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869 const Address constMethod (rbx, Method::const_offset()); |
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870 const Address invocation_counter(rbx, Method::invocation_counter_offset() + InvocationCounter::counter_offset()); |
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871 const Address access_flags (rbx, Method::access_flags_offset()); |
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872 const Address size_of_parameters(rcx, ConstMethod::size_of_parameters_offset()); |
0 | 873 |
874 // get parameter size (always needed) | |
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875 __ movptr(rcx, constMethod); |
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876 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 877 |
878 // native calls don't need the stack size check since they have no expression stack | |
879 // and the arguments are already on the stack and we only add a handful of words | |
880 // to the stack | |
881 | |
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882 // rbx,: Method* |
0 | 883 // rcx: size of parameters |
884 // rsi: sender sp | |
885 | |
304 | 886 __ pop(rax); // get return address |
0 | 887 // for natives the size of locals is zero |
888 | |
889 // compute beginning of parameters (rdi) | |
304 | 890 __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); |
0 | 891 |
892 | |
893 // add 2 zero-initialized slots for native calls | |
894 // NULL result handler | |
304 | 895 __ push((int32_t)NULL_WORD); |
0 | 896 // NULL oop temp (mirror or jni oop result) |
304 | 897 __ push((int32_t)NULL_WORD); |
0 | 898 |
899 if (inc_counter) __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
900 // initialize fixed part of activation frame | |
901 | |
902 generate_fixed_frame(true); | |
903 | |
904 // make sure method is native & not abstract | |
905 #ifdef ASSERT | |
906 __ movl(rax, access_flags); | |
907 { | |
908 Label L; | |
909 __ testl(rax, JVM_ACC_NATIVE); | |
910 __ jcc(Assembler::notZero, L); | |
911 __ stop("tried to execute non-native method as native"); | |
912 __ bind(L); | |
913 } | |
914 { Label L; | |
915 __ testl(rax, JVM_ACC_ABSTRACT); | |
916 __ jcc(Assembler::zero, L); | |
917 __ stop("tried to execute abstract method in interpreter"); | |
918 __ bind(L); | |
919 } | |
920 #endif | |
921 | |
922 // Since at this point in the method invocation the exception handler | |
923 // would try to exit the monitor of synchronized methods which hasn't | |
924 // been entered yet, we set the thread local variable | |
925 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
926 // check this flag. | |
927 | |
928 __ get_thread(rax); | |
929 const Address do_not_unlock_if_synchronized(rax, | |
930 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
931 __ movbool(do_not_unlock_if_synchronized, true); | |
932 | |
933 // increment invocation count & check for overflow | |
934 Label invocation_counter_overflow; | |
935 if (inc_counter) { | |
936 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
937 } | |
938 | |
939 Label continue_after_compile; | |
940 __ bind(continue_after_compile); | |
941 | |
942 bang_stack_shadow_pages(true); | |
943 | |
944 // reset the _do_not_unlock_if_synchronized flag | |
945 __ get_thread(rax); | |
946 __ movbool(do_not_unlock_if_synchronized, false); | |
947 | |
948 // check for synchronized methods | |
949 // Must happen AFTER invocation_counter check and stack overflow check, | |
950 // so method is not locked if overflows. | |
951 // | |
952 if (synchronized) { | |
953 lock_method(); | |
954 } else { | |
955 // no synchronization necessary | |
956 #ifdef ASSERT | |
957 { Label L; | |
958 __ movl(rax, access_flags); | |
959 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
960 __ jcc(Assembler::zero, L); | |
961 __ stop("method needs synchronization"); | |
962 __ bind(L); | |
963 } | |
964 #endif | |
965 } | |
966 | |
967 // start execution | |
968 #ifdef ASSERT | |
969 { Label L; | |
970 const Address monitor_block_top (rbp, | |
971 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 972 __ movptr(rax, monitor_block_top); |
973 __ cmpptr(rax, rsp); | |
0 | 974 __ jcc(Assembler::equal, L); |
975 __ stop("broken stack frame setup in interpreter"); | |
976 __ bind(L); | |
977 } | |
978 #endif | |
979 | |
980 // jvmti/dtrace support | |
981 __ notify_method_entry(); | |
982 | |
983 // work registers | |
984 const Register method = rbx; | |
985 const Register thread = rdi; | |
986 const Register t = rcx; | |
987 | |
988 // allocate space for parameters | |
989 __ get_method(method); | |
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990 __ movptr(t, Address(method, Method::const_offset())); |
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991 __ load_unsigned_short(t, Address(t, ConstMethod::size_of_parameters_offset())); |
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992 |
1506 | 993 __ shlptr(t, Interpreter::logStackElementSize); |
304 | 994 __ addptr(t, 2*wordSize); // allocate two more slots for JNIEnv and possible mirror |
995 __ subptr(rsp, t); | |
996 __ andptr(rsp, -(StackAlignmentInBytes)); // gcc needs 16 byte aligned stacks to do XMM intrinsics | |
0 | 997 |
998 // get signature handler | |
999 { Label L; | |
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1000 __ movptr(t, Address(method, Method::signature_handler_offset())); |
304 | 1001 __ testptr(t, t); |
0 | 1002 __ jcc(Assembler::notZero, L); |
1003 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); | |
1004 __ get_method(method); | |
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1005 __ movptr(t, Address(method, Method::signature_handler_offset())); |
0 | 1006 __ bind(L); |
1007 } | |
1008 | |
1009 // call signature handler | |
1010 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == rdi, "adjust this code"); | |
1011 assert(InterpreterRuntime::SignatureHandlerGenerator::to () == rsp, "adjust this code"); | |
1012 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == t , "adjust this code"); | |
1013 // The generated handlers do not touch RBX (the method oop). | |
1014 // However, large signatures cannot be cached and are generated | |
1015 // each time here. The slow-path generator will blow RBX | |
1016 // sometime, so we must reload it after the call. | |
1017 __ call(t); | |
1018 __ get_method(method); // slow path call blows RBX on DevStudio 5.0 | |
1019 | |
1020 // result handler is in rax, | |
1021 // set result handler | |
304 | 1022 __ movptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), rax); |
0 | 1023 |
1024 // pass mirror handle if static call | |
1025 { Label L; | |
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1026 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
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1027 __ movl(t, Address(method, Method::access_flags_offset())); |
0 | 1028 __ testl(t, JVM_ACC_STATIC); |
1029 __ jcc(Assembler::zero, L); | |
1030 // get mirror | |
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1031 __ movptr(t, Address(method, Method:: const_offset())); |
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1032 __ movptr(t, Address(t, ConstMethod::constants_offset())); |
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1033 __ movptr(t, Address(t, ConstantPool::pool_holder_offset_in_bytes())); |
304 | 1034 __ movptr(t, Address(t, mirror_offset)); |
0 | 1035 // copy mirror into activation frame |
304 | 1036 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), t); |
0 | 1037 // pass handle to mirror |
304 | 1038 __ lea(t, Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); |
1039 __ movptr(Address(rsp, wordSize), t); | |
0 | 1040 __ bind(L); |
1041 } | |
1042 | |
1043 // get native function entry point | |
1044 { Label L; | |
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1045 __ movptr(rax, Address(method, Method::native_function_offset())); |
0 | 1046 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
304 | 1047 __ cmpptr(rax, unsatisfied.addr()); |
0 | 1048 __ jcc(Assembler::notEqual, L); |
1049 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); | |
1050 __ get_method(method); | |
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1051 __ movptr(rax, Address(method, Method::native_function_offset())); |
0 | 1052 __ bind(L); |
1053 } | |
1054 | |
1055 // pass JNIEnv | |
1056 __ get_thread(thread); | |
304 | 1057 __ lea(t, Address(thread, JavaThread::jni_environment_offset())); |
1058 __ movptr(Address(rsp, 0), t); | |
0 | 1059 |
1060 // set_last_Java_frame_before_call | |
1061 // It is enough that the pc() | |
1062 // points into the right code segment. It does not have to be the correct return pc. | |
1063 __ set_last_Java_frame(thread, noreg, rbp, __ pc()); | |
1064 | |
1065 // change thread state | |
1066 #ifdef ASSERT | |
1067 { Label L; | |
1068 __ movl(t, Address(thread, JavaThread::thread_state_offset())); | |
1069 __ cmpl(t, _thread_in_Java); | |
1070 __ jcc(Assembler::equal, L); | |
1071 __ stop("Wrong thread state in native stub"); | |
1072 __ bind(L); | |
1073 } | |
1074 #endif | |
1075 | |
1076 // Change state to native | |
1077 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native); | |
1078 __ call(rax); | |
1079 | |
1080 // result potentially in rdx:rax or ST0 | |
1081 | |
1082 // Either restore the MXCSR register after returning from the JNI Call | |
1083 // or verify that it wasn't changed. | |
1084 if (VM_Version::supports_sse()) { | |
1085 if (RestoreMXCSROnJNICalls) { | |
1086 __ ldmxcsr(ExternalAddress(StubRoutines::addr_mxcsr_std())); | |
1087 } | |
1088 else if (CheckJNICalls ) { | |
304 | 1089 __ call(RuntimeAddress(StubRoutines::x86::verify_mxcsr_entry())); |
0 | 1090 } |
1091 } | |
1092 | |
1093 // Either restore the x87 floating pointer control word after returning | |
1094 // from the JNI call or verify that it wasn't changed. | |
1095 if (CheckJNICalls) { | |
304 | 1096 __ call(RuntimeAddress(StubRoutines::x86::verify_fpu_cntrl_wrd_entry())); |
0 | 1097 } |
1098 | |
1099 // save potential result in ST(0) & rdx:rax | |
1100 // (if result handler is the T_FLOAT or T_DOUBLE handler, result must be in ST0 - | |
1101 // the check is necessary to avoid potential Intel FPU overflow problems by saving/restoring 'empty' FPU registers) | |
1102 // It is safe to do this push because state is _thread_in_native and return address will be found | |
1103 // via _last_native_pc and not via _last_jave_sp | |
1104 | |
1105 // NOTE: the order of theses push(es) is known to frame::interpreter_frame_result. | |
1106 // If the order changes or anything else is added to the stack the code in | |
1107 // interpreter_frame_result will have to be changed. | |
1108 | |
1109 { Label L; | |
1110 Label push_double; | |
1111 ExternalAddress float_handler(AbstractInterpreter::result_handler(T_FLOAT)); | |
1112 ExternalAddress double_handler(AbstractInterpreter::result_handler(T_DOUBLE)); | |
1113 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), | |
1114 float_handler.addr()); | |
1115 __ jcc(Assembler::equal, push_double); | |
1116 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), | |
1117 double_handler.addr()); | |
1118 __ jcc(Assembler::notEqual, L); | |
1119 __ bind(push_double); | |
1120 __ push(dtos); | |
1121 __ bind(L); | |
1122 } | |
1123 __ push(ltos); | |
1124 | |
1125 // change thread state | |
1126 __ get_thread(thread); | |
1127 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native_trans); | |
1128 if(os::is_MP()) { | |
1129 if (UseMembar) { | |
304 | 1130 // Force this write out before the read below |
1131 __ membar(Assembler::Membar_mask_bits( | |
1132 Assembler::LoadLoad | Assembler::LoadStore | | |
1133 Assembler::StoreLoad | Assembler::StoreStore)); | |
0 | 1134 } else { |
1135 // Write serialization page so VM thread can do a pseudo remote membar. | |
1136 // We use the current thread pointer to calculate a thread specific | |
1137 // offset to write to within the page. This minimizes bus traffic | |
1138 // due to cache line collision. | |
1139 __ serialize_memory(thread, rcx); | |
1140 } | |
1141 } | |
1142 | |
1143 if (AlwaysRestoreFPU) { | |
1144 // Make sure the control word is correct. | |
1145 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); | |
1146 } | |
1147 | |
1148 // check for safepoint operation in progress and/or pending suspend requests | |
1149 { Label Continue; | |
1150 | |
1151 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
1152 SafepointSynchronize::_not_synchronized); | |
1153 | |
1154 Label L; | |
1155 __ jcc(Assembler::notEqual, L); | |
1156 __ cmpl(Address(thread, JavaThread::suspend_flags_offset()), 0); | |
1157 __ jcc(Assembler::equal, Continue); | |
1158 __ bind(L); | |
1159 | |
1160 // Don't use call_VM as it will see a possible pending exception and forward it | |
1161 // and never return here preventing us from clearing _last_native_pc down below. | |
1162 // Also can't use call_VM_leaf either as it will check to see if rsi & rdi are | |
1163 // preserved and correspond to the bcp/locals pointers. So we do a runtime call | |
1164 // by hand. | |
1165 // | |
304 | 1166 __ push(thread); |
0 | 1167 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, |
1168 JavaThread::check_special_condition_for_native_trans))); | |
1169 __ increment(rsp, wordSize); | |
1170 __ get_thread(thread); | |
1171 | |
1172 __ bind(Continue); | |
1173 } | |
1174 | |
1175 // change thread state | |
1176 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
1177 | |
1178 __ reset_last_Java_frame(thread, true, true); | |
1179 | |
1180 // reset handle block | |
304 | 1181 __ movptr(t, Address(thread, JavaThread::active_handles_offset())); |
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1182 __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), NULL_WORD); |
0 | 1183 |
1184 // If result was an oop then unbox and save it in the frame | |
1185 { Label L; | |
1186 Label no_oop, store_result; | |
1187 ExternalAddress handler(AbstractInterpreter::result_handler(T_OBJECT)); | |
1188 __ cmpptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), | |
1189 handler.addr()); | |
1190 __ jcc(Assembler::notEqual, no_oop); | |
304 | 1191 __ cmpptr(Address(rsp, 0), (int32_t)NULL_WORD); |
0 | 1192 __ pop(ltos); |
304 | 1193 __ testptr(rax, rax); |
0 | 1194 __ jcc(Assembler::zero, store_result); |
1195 // unbox | |
304 | 1196 __ movptr(rax, Address(rax, 0)); |
0 | 1197 __ bind(store_result); |
304 | 1198 __ movptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset)*wordSize), rax); |
0 | 1199 // keep stack depth as expected by pushing oop which will eventually be discarded |
1200 __ push(ltos); | |
1201 __ bind(no_oop); | |
1202 } | |
1203 | |
1204 { | |
1205 Label no_reguard; | |
1206 __ cmpl(Address(thread, JavaThread::stack_guard_state_offset()), JavaThread::stack_guard_yellow_disabled); | |
1207 __ jcc(Assembler::notEqual, no_reguard); | |
1208 | |
304 | 1209 __ pusha(); |
0 | 1210 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
304 | 1211 __ popa(); |
0 | 1212 |
1213 __ bind(no_reguard); | |
1214 } | |
1215 | |
1216 // restore rsi to have legal interpreter frame, | |
1217 // i.e., bci == 0 <=> rsi == code_base() | |
1218 // Can't call_VM until bcp is within reasonable. | |
1219 __ get_method(method); // method is junk from thread_in_native to now. | |
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1220 __ movptr(rsi, Address(method,Method::const_offset())); // get ConstMethod* |
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1221 __ lea(rsi, Address(rsi,ConstMethod::codes_offset())); // get codebase |
0 | 1222 |
1223 // handle exceptions (exception handling will handle unlocking!) | |
1224 { Label L; | |
304 | 1225 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
0 | 1226 __ jcc(Assembler::zero, L); |
1227 // Note: At some point we may want to unify this with the code used in call_VM_base(); | |
1228 // i.e., we should use the StubRoutines::forward_exception code. For now this | |
1229 // doesn't work here because the rsp is not correctly set at this point. | |
1230 __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); | |
1231 __ should_not_reach_here(); | |
1232 __ bind(L); | |
1233 } | |
1234 | |
1235 // do unlocking if necessary | |
1236 { Label L; | |
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1237 __ movl(t, Address(method, Method::access_flags_offset())); |
0 | 1238 __ testl(t, JVM_ACC_SYNCHRONIZED); |
1239 __ jcc(Assembler::zero, L); | |
1240 // the code below should be shared with interpreter macro assembler implementation | |
1241 { Label unlock; | |
1242 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
1243 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
1244 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
1245 | |
304 | 1246 __ lea(rdx, monitor); // address of first monitor |
0 | 1247 |
304 | 1248 __ movptr(t, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
1249 __ testptr(t, t); | |
0 | 1250 __ jcc(Assembler::notZero, unlock); |
1251 | |
1252 // Entry already unlocked, need to throw exception | |
1253 __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
1254 __ should_not_reach_here(); | |
1255 | |
1256 __ bind(unlock); | |
1257 __ unlock_object(rdx); | |
1258 } | |
1259 __ bind(L); | |
1260 } | |
1261 | |
1262 // jvmti/dtrace support | |
1263 // Note: This must happen _after_ handling/throwing any exceptions since | |
1264 // the exception handler code notifies the runtime of method exits | |
1265 // too. If this happens before, method entry/exit notifications are | |
1266 // not properly paired (was bug - gri 11/22/99). | |
1267 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
1268 | |
1269 // restore potential result in rdx:rax, call result handler to restore potential result in ST0 & handle result | |
1270 __ pop(ltos); | |
304 | 1271 __ movptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
0 | 1272 __ call(t); |
1273 | |
1274 // remove activation | |
304 | 1275 __ movptr(t, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 1276 __ leave(); // remove frame anchor |
304 | 1277 __ pop(rdi); // get return address |
1278 __ mov(rsp, t); // set sp to sender sp | |
0 | 1279 __ jmp(rdi); |
1280 | |
1281 if (inc_counter) { | |
1282 // Handle overflow of counter and compile method | |
1283 __ bind(invocation_counter_overflow); | |
1284 generate_counter_overflow(&continue_after_compile); | |
1285 } | |
1286 | |
1287 return entry_point; | |
1288 } | |
1289 | |
1290 // | |
1291 // Generic interpreted method entry to (asm) interpreter | |
1292 // | |
1293 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
1294 // determine code generation flags | |
1295 bool inc_counter = UseCompiler || CountCompiledCalls; | |
1296 | |
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1297 // rbx,: Method* |
0 | 1298 // rsi: sender sp |
1299 address entry_point = __ pc(); | |
1300 | |
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1301 const Address constMethod (rbx, Method::const_offset()); |
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1302 const Address invocation_counter(rbx, Method::invocation_counter_offset() + InvocationCounter::counter_offset()); |
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1303 const Address access_flags (rbx, Method::access_flags_offset()); |
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1304 const Address size_of_parameters(rdx, ConstMethod::size_of_parameters_offset()); |
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1305 const Address size_of_locals (rdx, ConstMethod::size_of_locals_offset()); |
0 | 1306 |
1307 // get parameter size (always needed) | |
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1308 __ movptr(rdx, constMethod); |
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1309 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 1310 |
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1311 // rbx,: Method* |
0 | 1312 // rcx: size of parameters |
1313 | |
1314 // rsi: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
1315 | |
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1316 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
0 | 1317 __ subl(rdx, rcx); // rdx = no. of additional locals |
1318 | |
1319 // see if we've got enough room on the stack for locals plus overhead. | |
1320 generate_stack_overflow_check(); | |
1321 | |
1322 // get return address | |
304 | 1323 __ pop(rax); |
0 | 1324 |
1325 // compute beginning of parameters (rdi) | |
304 | 1326 __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); |
0 | 1327 |
1328 // rdx - # of additional locals | |
1329 // allocate space for locals | |
1330 // explicitly initialize locals | |
1331 { | |
1332 Label exit, loop; | |
1333 __ testl(rdx, rdx); | |
1334 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 | |
1335 __ bind(loop); | |
304 | 1336 __ push((int32_t)NULL_WORD); // initialize local variables |
0 | 1337 __ decrement(rdx); // until everything initialized |
1338 __ jcc(Assembler::greater, loop); | |
1339 __ bind(exit); | |
1340 } | |
1341 | |
1342 if (inc_counter) __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
1343 // initialize fixed part of activation frame | |
1344 generate_fixed_frame(false); | |
1345 | |
1346 // make sure method is not native & not abstract | |
1347 #ifdef ASSERT | |
1348 __ movl(rax, access_flags); | |
1349 { | |
1350 Label L; | |
1351 __ testl(rax, JVM_ACC_NATIVE); | |
1352 __ jcc(Assembler::zero, L); | |
1353 __ stop("tried to execute native method as non-native"); | |
1354 __ bind(L); | |
1355 } | |
1356 { Label L; | |
1357 __ testl(rax, JVM_ACC_ABSTRACT); | |
1358 __ jcc(Assembler::zero, L); | |
1359 __ stop("tried to execute abstract method in interpreter"); | |
1360 __ bind(L); | |
1361 } | |
1362 #endif | |
1363 | |
1364 // Since at this point in the method invocation the exception handler | |
1365 // would try to exit the monitor of synchronized methods which hasn't | |
1366 // been entered yet, we set the thread local variable | |
1367 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
1368 // check this flag. | |
1369 | |
1370 __ get_thread(rax); | |
1371 const Address do_not_unlock_if_synchronized(rax, | |
1372 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
1373 __ movbool(do_not_unlock_if_synchronized, true); | |
1374 | |
1375 // increment invocation count & check for overflow | |
1376 Label invocation_counter_overflow; | |
1377 Label profile_method; | |
1378 Label profile_method_continue; | |
1379 if (inc_counter) { | |
1380 generate_counter_incr(&invocation_counter_overflow, &profile_method, &profile_method_continue); | |
1381 if (ProfileInterpreter) { | |
1382 __ bind(profile_method_continue); | |
1383 } | |
1384 } | |
1385 Label continue_after_compile; | |
1386 __ bind(continue_after_compile); | |
1387 | |
1388 bang_stack_shadow_pages(false); | |
1389 | |
1390 // reset the _do_not_unlock_if_synchronized flag | |
1391 __ get_thread(rax); | |
1392 __ movbool(do_not_unlock_if_synchronized, false); | |
1393 | |
1394 // check for synchronized methods | |
1395 // Must happen AFTER invocation_counter check and stack overflow check, | |
1396 // so method is not locked if overflows. | |
1397 // | |
1398 if (synchronized) { | |
1399 // Allocate monitor and lock method | |
1400 lock_method(); | |
1401 } else { | |
1402 // no synchronization necessary | |
1403 #ifdef ASSERT | |
1404 { Label L; | |
1405 __ movl(rax, access_flags); | |
1406 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
1407 __ jcc(Assembler::zero, L); | |
1408 __ stop("method needs synchronization"); | |
1409 __ bind(L); | |
1410 } | |
1411 #endif | |
1412 } | |
1413 | |
1414 // start execution | |
1415 #ifdef ASSERT | |
1416 { Label L; | |
1417 const Address monitor_block_top (rbp, | |
1418 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 1419 __ movptr(rax, monitor_block_top); |
1420 __ cmpptr(rax, rsp); | |
0 | 1421 __ jcc(Assembler::equal, L); |
1422 __ stop("broken stack frame setup in interpreter"); | |
1423 __ bind(L); | |
1424 } | |
1425 #endif | |
1426 | |
1427 // jvmti support | |
1428 __ notify_method_entry(); | |
1429 | |
1430 __ dispatch_next(vtos); | |
1431 | |
1432 // invocation counter overflow | |
1433 if (inc_counter) { | |
1434 if (ProfileInterpreter) { | |
1435 // We have decided to profile this method in the interpreter | |
1436 __ bind(profile_method); | |
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1437 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
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1438 __ set_method_data_pointer_for_bcp(); |
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1439 __ get_method(rbx); |
0 | 1440 __ jmp(profile_method_continue); |
1441 } | |
1442 // Handle overflow of counter and compile method | |
1443 __ bind(invocation_counter_overflow); | |
1444 generate_counter_overflow(&continue_after_compile); | |
1445 } | |
1446 | |
1447 return entry_point; | |
1448 } | |
1449 | |
1450 //------------------------------------------------------------------------------------------------------------------------ | |
1451 // Entry points | |
1452 // | |
1453 // Here we generate the various kind of entries into the interpreter. | |
1454 // The two main entry type are generic bytecode methods and native call method. | |
1455 // These both come in synchronized and non-synchronized versions but the | |
1456 // frame layout they create is very similar. The other method entry | |
1457 // types are really just special purpose entries that are really entry | |
1458 // and interpretation all in one. These are for trivial methods like | |
1459 // accessor, empty, or special math methods. | |
1460 // | |
1461 // When control flow reaches any of the entry types for the interpreter | |
1462 // the following holds -> | |
1463 // | |
1464 // Arguments: | |
1465 // | |
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1466 // rbx,: Method* |
0 | 1467 // rcx: receiver |
1468 // | |
1469 // | |
1470 // Stack layout immediately at entry | |
1471 // | |
1472 // [ return address ] <--- rsp | |
1473 // [ parameter n ] | |
1474 // ... | |
1475 // [ parameter 1 ] | |
1476 // [ expression stack ] (caller's java expression stack) | |
1477 | |
1478 // Assuming that we don't go to one of the trivial specialized | |
1479 // entries the stack will look like below when we are ready to execute | |
1480 // the first bytecode (or call the native routine). The register usage | |
1481 // will be as the template based interpreter expects (see interpreter_x86.hpp). | |
1482 // | |
1483 // local variables follow incoming parameters immediately; i.e. | |
1484 // the return address is moved to the end of the locals). | |
1485 // | |
1486 // [ monitor entry ] <--- rsp | |
1487 // ... | |
1488 // [ monitor entry ] | |
1489 // [ expr. stack bottom ] | |
1490 // [ saved rsi ] | |
1491 // [ current rdi ] | |
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1492 // [ Method* ] |
0 | 1493 // [ saved rbp, ] <--- rbp, |
1494 // [ return address ] | |
1495 // [ local variable m ] | |
1496 // ... | |
1497 // [ local variable 1 ] | |
1498 // [ parameter n ] | |
1499 // ... | |
1500 // [ parameter 1 ] <--- rdi | |
1501 | |
1502 address AbstractInterpreterGenerator::generate_method_entry(AbstractInterpreter::MethodKind kind) { | |
1503 // determine code generation flags | |
1504 bool synchronized = false; | |
1505 address entry_point = NULL; | |
1506 | |
1507 switch (kind) { | |
1508 case Interpreter::zerolocals : break; | |
1509 case Interpreter::zerolocals_synchronized: synchronized = true; break; | |
1510 case Interpreter::native : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(false); break; | |
1511 case Interpreter::native_synchronized : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(true); break; | |
1512 case Interpreter::empty : entry_point = ((InterpreterGenerator*)this)->generate_empty_entry(); break; | |
1513 case Interpreter::accessor : entry_point = ((InterpreterGenerator*)this)->generate_accessor_entry(); break; | |
1514 case Interpreter::abstract : entry_point = ((InterpreterGenerator*)this)->generate_abstract_entry(); break; | |
1515 | |
1516 case Interpreter::java_lang_math_sin : // fall thru | |
1517 case Interpreter::java_lang_math_cos : // fall thru | |
1518 case Interpreter::java_lang_math_tan : // fall thru | |
1519 case Interpreter::java_lang_math_abs : // fall thru | |
1520 case Interpreter::java_lang_math_log : // fall thru | |
1521 case Interpreter::java_lang_math_log10 : // fall thru | |
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1522 case Interpreter::java_lang_math_sqrt : // fall thru |
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1523 case Interpreter::java_lang_math_pow : // fall thru |
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1524 case Interpreter::java_lang_math_exp : entry_point = ((InterpreterGenerator*)this)->generate_math_entry(kind); break; |
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1525 case Interpreter::java_lang_ref_reference_get |
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1526 : entry_point = ((InterpreterGenerator*)this)->generate_Reference_get_entry(); break; |
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1527 default: |
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1528 fatal(err_msg("unexpected method kind: %d", kind)); |
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1529 break; |
0 | 1530 } |
1531 | |
1532 if (entry_point) return entry_point; | |
1533 | |
1534 return ((InterpreterGenerator*)this)->generate_normal_entry(synchronized); | |
1535 | |
1536 } | |
1537 | |
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1538 // These should never be compiled since the interpreter will prefer |
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1539 // the compiled version to the intrinsic version. |
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1540 bool AbstractInterpreter::can_be_compiled(methodHandle m) { |
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1541 switch (method_kind(m)) { |
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1542 case Interpreter::java_lang_math_sin : // fall thru |
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1543 case Interpreter::java_lang_math_cos : // fall thru |
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1544 case Interpreter::java_lang_math_tan : // fall thru |
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1545 case Interpreter::java_lang_math_abs : // fall thru |
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1546 case Interpreter::java_lang_math_log : // fall thru |
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1547 case Interpreter::java_lang_math_log10 : // fall thru |
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1548 case Interpreter::java_lang_math_sqrt : // fall thru |
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1549 case Interpreter::java_lang_math_pow : // fall thru |
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1550 case Interpreter::java_lang_math_exp : |
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1551 return false; |
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1552 default: |
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1553 return true; |
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1554 } |
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1555 } |
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1556 |
0 | 1557 // How much stack a method activation needs in words. |
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1558 int AbstractInterpreter::size_top_interpreter_activation(Method* method) { |
0 | 1559 |
1560 const int stub_code = 4; // see generate_call_stub | |
1561 // Save space for one monitor to get into the interpreted method in case | |
1562 // the method is synchronized | |
1563 int monitor_size = method->is_synchronized() ? | |
1564 1*frame::interpreter_frame_monitor_size() : 0; | |
1565 | |
1566 // total overhead size: entry_size + (saved rbp, thru expr stack bottom). | |
1567 // be sure to change this if you add/subtract anything to/from the overhead area | |
1568 const int overhead_size = -frame::interpreter_frame_initial_sp_offset; | |
1569 | |
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1570 const int extra_stack = Method::extra_stack_entries(); |
710 | 1571 const int method_stack = (method->max_locals() + method->max_stack() + extra_stack) * |
1506 | 1572 Interpreter::stackElementWords; |
0 | 1573 return overhead_size + method_stack + stub_code; |
1574 } | |
1575 | |
1576 // asm based interpreter deoptimization helpers | |
1577 | |
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1578 int AbstractInterpreter::layout_activation(Method* method, |
0 | 1579 int tempcount, |
1580 int popframe_extra_args, | |
1581 int moncount, | |
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1582 int caller_actual_parameters, |
0 | 1583 int callee_param_count, |
1584 int callee_locals, | |
1585 frame* caller, | |
1586 frame* interpreter_frame, | |
1587 bool is_top_frame) { | |
1588 // Note: This calculation must exactly parallel the frame setup | |
1589 // in AbstractInterpreterGenerator::generate_method_entry. | |
1590 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
1591 // The frame interpreter_frame, if not NULL, is guaranteed to be the right size, | |
1592 // as determined by a previous call to this method. | |
1593 // It is also guaranteed to be walkable even though it is in a skeletal state | |
1594 // NOTE: return size is in words not bytes | |
1595 | |
1596 // fixed size of an interpreter frame: | |
1506 | 1597 int max_locals = method->max_locals() * Interpreter::stackElementWords; |
0 | 1598 int extra_locals = (method->max_locals() - method->size_of_parameters()) * |
1506 | 1599 Interpreter::stackElementWords; |
0 | 1600 |
1601 int overhead = frame::sender_sp_offset - frame::interpreter_frame_initial_sp_offset; | |
1602 | |
1603 // Our locals were accounted for by the caller (or last_frame_adjust on the transistion) | |
1604 // Since the callee parameters already account for the callee's params we only need to account for | |
1605 // the extra locals. | |
1606 | |
1607 | |
1608 int size = overhead + | |
1506 | 1609 ((callee_locals - callee_param_count)*Interpreter::stackElementWords) + |
0 | 1610 (moncount*frame::interpreter_frame_monitor_size()) + |
1506 | 1611 tempcount*Interpreter::stackElementWords + popframe_extra_args; |
0 | 1612 |
1613 if (interpreter_frame != NULL) { | |
1614 #ifdef ASSERT | |
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1615 if (!EnableInvokeDynamic) |
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1616 // @@@ FIXME: Should we correct interpreter_frame_sender_sp in the calling sequences? |
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1617 // Probably, since deoptimization doesn't work yet. |
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1618 assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable"); |
0 | 1619 assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)"); |
1620 #endif | |
1621 | |
1622 interpreter_frame->interpreter_frame_set_method(method); | |
1623 // NOTE the difference in using sender_sp and interpreter_frame_sender_sp | |
1624 // interpreter_frame_sender_sp is the original sp of the caller (the unextended_sp) | |
1625 // and sender_sp is fp+8 | |
1626 intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; | |
1627 | |
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1628 #ifdef ASSERT |
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1629 if (caller->is_interpreted_frame()) { |
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1630 assert(locals < caller->fp() + frame::interpreter_frame_initial_sp_offset, "bad placement"); |
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1631 } |
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1632 #endif |
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1633 |
0 | 1634 interpreter_frame->interpreter_frame_set_locals(locals); |
1635 BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); | |
1636 BasicObjectLock* monbot = montop - moncount; | |
1637 interpreter_frame->interpreter_frame_set_monitor_end(monbot); | |
1638 | |
1639 // Set last_sp | |
1640 intptr_t* rsp = (intptr_t*) monbot - | |
1506 | 1641 tempcount*Interpreter::stackElementWords - |
0 | 1642 popframe_extra_args; |
1643 interpreter_frame->interpreter_frame_set_last_sp(rsp); | |
1644 | |
1645 // All frames but the initial (oldest) interpreter frame we fill in have a | |
1646 // value for sender_sp that allows walking the stack but isn't | |
1647 // truly correct. Correct the value here. | |
1648 | |
1649 if (extra_locals != 0 && | |
1650 interpreter_frame->sender_sp() == interpreter_frame->interpreter_frame_sender_sp() ) { | |
1651 interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + extra_locals); | |
1652 } | |
1653 *interpreter_frame->interpreter_frame_cache_addr() = | |
1654 method->constants()->cache(); | |
1655 } | |
1656 return size; | |
1657 } | |
1658 | |
1659 | |
1660 //------------------------------------------------------------------------------------------------------------------------ | |
1661 // Exceptions | |
1662 | |
1663 void TemplateInterpreterGenerator::generate_throw_exception() { | |
1664 // Entry point in previous activation (i.e., if the caller was interpreted) | |
1665 Interpreter::_rethrow_exception_entry = __ pc(); | |
1295 | 1666 const Register thread = rcx; |
0 | 1667 |
1668 // Restore sp to interpreter_frame_last_sp even though we are going | |
1669 // to empty the expression stack for the exception processing. | |
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1670 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 1671 // rax,: exception |
1672 // rdx: return address/pc that threw exception | |
1673 __ restore_bcp(); // rsi points to call/send | |
1674 __ restore_locals(); | |
1675 | |
1676 // Entry point for exceptions thrown within interpreter code | |
1677 Interpreter::_throw_exception_entry = __ pc(); | |
1678 // expression stack is undefined here | |
1679 // rax,: exception | |
1680 // rsi: exception bcp | |
1681 __ verify_oop(rax); | |
1682 | |
1683 // expression stack must be empty before entering the VM in case of an exception | |
1684 __ empty_expression_stack(); | |
1685 __ empty_FPU_stack(); | |
1686 // find exception handler address and preserve exception oop | |
1687 __ call_VM(rdx, CAST_FROM_FN_PTR(address, InterpreterRuntime::exception_handler_for_exception), rax); | |
1688 // rax,: exception handler entry point | |
1689 // rdx: preserved exception oop | |
1690 // rsi: bcp for exception handler | |
1691 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
1692 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
1693 | |
1694 // If the exception is not handled in the current frame the frame is removed and | |
1695 // the exception is rethrown (i.e. exception continuation is _rethrow_exception). | |
1696 // | |
1697 // Note: At this point the bci is still the bxi for the instruction which caused | |
1698 // the exception and the expression stack is empty. Thus, for any VM calls | |
1699 // at this point, GC will find a legal oop map (with empty expression stack). | |
1700 | |
1701 // In current activation | |
1702 // tos: exception | |
1703 // rsi: exception bcp | |
1704 | |
1705 // | |
1706 // JVMTI PopFrame support | |
1707 // | |
1708 | |
1709 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
1710 __ empty_expression_stack(); | |
1711 __ empty_FPU_stack(); | |
1712 // Set the popframe_processing bit in pending_popframe_condition indicating that we are | |
1713 // currently handling popframe, so that call_VMs that may happen later do not trigger new | |
1714 // popframe handling cycles. | |
1295 | 1715 __ get_thread(thread); |
1716 __ movl(rdx, Address(thread, JavaThread::popframe_condition_offset())); | |
0 | 1717 __ orl(rdx, JavaThread::popframe_processing_bit); |
1295 | 1718 __ movl(Address(thread, JavaThread::popframe_condition_offset()), rdx); |
0 | 1719 |
1720 { | |
1721 // Check to see whether we are returning to a deoptimized frame. | |
1722 // (The PopFrame call ensures that the caller of the popped frame is | |
1723 // either interpreted or compiled and deoptimizes it if compiled.) | |
1724 // In this case, we can't call dispatch_next() after the frame is | |
1725 // popped, but instead must save the incoming arguments and restore | |
1726 // them after deoptimization has occurred. | |
1727 // | |
1728 // Note that we don't compare the return PC against the | |
1729 // deoptimization blob's unpack entry because of the presence of | |
1730 // adapter frames in C2. | |
1731 Label caller_not_deoptimized; | |
304 | 1732 __ movptr(rdx, Address(rbp, frame::return_addr_offset * wordSize)); |
0 | 1733 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::interpreter_contains), rdx); |
1734 __ testl(rax, rax); | |
1735 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
1736 | |
1737 // Compute size of arguments for saving when returning to deoptimized caller | |
1738 __ get_method(rax); | |
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1739 __ movptr(rax, Address(rax, Method::const_offset())); |
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1740 __ load_unsigned_short(rax, Address(rax, ConstMethod::size_of_parameters_offset())); |
1506 | 1741 __ shlptr(rax, Interpreter::logStackElementSize); |
0 | 1742 __ restore_locals(); |
304 | 1743 __ subptr(rdi, rax); |
1744 __ addptr(rdi, wordSize); | |
0 | 1745 // Save these arguments |
1295 | 1746 __ get_thread(thread); |
1747 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::popframe_preserve_args), thread, rax, rdi); | |
0 | 1748 |
1749 __ remove_activation(vtos, rdx, | |
1750 /* throw_monitor_exception */ false, | |
1751 /* install_monitor_exception */ false, | |
1752 /* notify_jvmdi */ false); | |
1753 | |
1754 // Inform deoptimization that it is responsible for restoring these arguments | |
1295 | 1755 __ get_thread(thread); |
1756 __ movl(Address(thread, JavaThread::popframe_condition_offset()), JavaThread::popframe_force_deopt_reexecution_bit); | |
0 | 1757 |
1758 // Continue in deoptimization handler | |
1759 __ jmp(rdx); | |
1760 | |
1761 __ bind(caller_not_deoptimized); | |
1762 } | |
1763 | |
1764 __ remove_activation(vtos, rdx, | |
1765 /* throw_monitor_exception */ false, | |
1766 /* install_monitor_exception */ false, | |
1767 /* notify_jvmdi */ false); | |
1768 | |
1769 // Finish with popframe handling | |
1770 // A previous I2C followed by a deoptimization might have moved the | |
1771 // outgoing arguments further up the stack. PopFrame expects the | |
1772 // mutations to those outgoing arguments to be preserved and other | |
1773 // constraints basically require this frame to look exactly as | |
1774 // though it had previously invoked an interpreted activation with | |
1775 // no space between the top of the expression stack (current | |
1776 // last_sp) and the top of stack. Rather than force deopt to | |
1777 // maintain this kind of invariant all the time we call a small | |
1778 // fixup routine to move the mutated arguments onto the top of our | |
1779 // expression stack if necessary. | |
304 | 1780 __ mov(rax, rsp); |
1781 __ movptr(rbx, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
1295 | 1782 __ get_thread(thread); |
0 | 1783 // PC must point into interpreter here |
1295 | 1784 __ set_last_Java_frame(thread, noreg, rbp, __ pc()); |
1785 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), thread, rax, rbx); | |
1786 __ get_thread(thread); | |
1787 __ reset_last_Java_frame(thread, true, true); | |
0 | 1788 // Restore the last_sp and null it out |
304 | 1789 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
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1790 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 1791 |
1792 __ restore_bcp(); | |
1793 __ restore_locals(); | |
1794 // The method data pointer was incremented already during | |
1795 // call profiling. We have to restore the mdp for the current bcp. | |
1796 if (ProfileInterpreter) { | |
1797 __ set_method_data_pointer_for_bcp(); | |
1798 } | |
1799 | |
1800 // Clear the popframe condition flag | |
1295 | 1801 __ get_thread(thread); |
1802 __ movl(Address(thread, JavaThread::popframe_condition_offset()), JavaThread::popframe_inactive); | |
0 | 1803 |
1804 __ dispatch_next(vtos); | |
1805 // end of PopFrame support | |
1806 | |
1807 Interpreter::_remove_activation_entry = __ pc(); | |
1808 | |
1809 // preserve exception over this code sequence | |
1810 __ pop_ptr(rax); | |
1295 | 1811 __ get_thread(thread); |
1812 __ movptr(Address(thread, JavaThread::vm_result_offset()), rax); | |
0 | 1813 // remove the activation (without doing throws on illegalMonitorExceptions) |
1814 __ remove_activation(vtos, rdx, false, true, false); | |
1815 // restore exception | |
1295 | 1816 __ get_thread(thread); |
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1817 __ get_vm_result(rax, thread); |
0 | 1818 |
1819 // Inbetween activations - previous activation type unknown yet | |
1820 // compute continuation point - the continuation point expects | |
1821 // the following registers set up: | |
1822 // | |
1295 | 1823 // rax: exception |
0 | 1824 // rdx: return address/pc that threw exception |
1825 // rsp: expression stack of caller | |
1295 | 1826 // rbp: rbp, of caller |
304 | 1827 __ push(rax); // save exception |
1828 __ push(rdx); // save return address | |
1295 | 1829 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), thread, rdx); |
304 | 1830 __ mov(rbx, rax); // save exception handler |
1831 __ pop(rdx); // restore return address | |
1832 __ pop(rax); // restore exception | |
0 | 1833 // Note that an "issuing PC" is actually the next PC after the call |
1834 __ jmp(rbx); // jump to exception handler of caller | |
1835 } | |
1836 | |
1837 | |
1838 // | |
1839 // JVMTI ForceEarlyReturn support | |
1840 // | |
1841 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
1842 address entry = __ pc(); | |
1295 | 1843 const Register thread = rcx; |
0 | 1844 |
1845 __ restore_bcp(); | |
1846 __ restore_locals(); | |
1847 __ empty_expression_stack(); | |
1848 __ empty_FPU_stack(); | |
1849 __ load_earlyret_value(state); | |
1850 | |
1295 | 1851 __ get_thread(thread); |
1852 __ movptr(rcx, Address(thread, JavaThread::jvmti_thread_state_offset())); | |
0 | 1853 const Address cond_addr(rcx, JvmtiThreadState::earlyret_state_offset()); |
1854 | |
1855 // Clear the earlyret state | |
1856 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
1857 | |
1858 __ remove_activation(state, rsi, | |
1859 false, /* throw_monitor_exception */ | |
1860 false, /* install_monitor_exception */ | |
1861 true); /* notify_jvmdi */ | |
1862 __ jmp(rsi); | |
1863 return entry; | |
1864 } // end of ForceEarlyReturn support | |
1865 | |
1866 | |
1867 //------------------------------------------------------------------------------------------------------------------------ | |
1868 // Helper for vtos entry point generation | |
1869 | |
1870 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) { | |
1871 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
1872 Label L; | |
1873 fep = __ pc(); __ push(ftos); __ jmp(L); | |
1874 dep = __ pc(); __ push(dtos); __ jmp(L); | |
1875 lep = __ pc(); __ push(ltos); __ jmp(L); | |
1876 aep = __ pc(); __ push(atos); __ jmp(L); | |
1877 bep = cep = sep = // fall through | |
1878 iep = __ pc(); __ push(itos); // fall through | |
1879 vep = __ pc(); __ bind(L); // fall through | |
1880 generate_and_dispatch(t); | |
1881 } | |
1882 | |
1883 //------------------------------------------------------------------------------------------------------------------------ | |
1884 // Generation of individual instructions | |
1885 | |
1886 // helpers for generate_and_dispatch | |
1887 | |
1888 | |
1889 | |
1890 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
1891 : TemplateInterpreterGenerator(code) { | |
1892 generate_all(); // down here so it can be "virtual" | |
1893 } | |
1894 | |
1895 //------------------------------------------------------------------------------------------------------------------------ | |
1896 | |
1897 // Non-product code | |
1898 #ifndef PRODUCT | |
1899 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
1900 address entry = __ pc(); | |
1901 | |
1902 // prepare expression stack | |
304 | 1903 __ pop(rcx); // pop return address so expression stack is 'pure' |
0 | 1904 __ push(state); // save tosca |
1905 | |
1906 // pass tosca registers as arguments & call tracer | |
1907 __ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), rcx, rax, rdx); | |
304 | 1908 __ mov(rcx, rax); // make sure return address is not destroyed by pop(state) |
0 | 1909 __ pop(state); // restore tosca |
1910 | |
1911 // return | |
1912 __ jmp(rcx); | |
1913 | |
1914 return entry; | |
1915 } | |
1916 | |
1917 | |
1918 void TemplateInterpreterGenerator::count_bytecode() { | |
304 | 1919 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); |
0 | 1920 } |
1921 | |
1922 | |
1923 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
304 | 1924 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); |
0 | 1925 } |
1926 | |
1927 | |
1928 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
1929 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
1930 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
1931 __ orl(rbx, ((int)t->bytecode()) << BytecodePairHistogram::log2_number_of_codes); | |
1932 ExternalAddress table((address) BytecodePairHistogram::_counters); | |
1933 Address index(noreg, rbx, Address::times_4); | |
304 | 1934 __ incrementl(ArrayAddress(table, index)); |
0 | 1935 } |
1936 | |
1937 | |
1938 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
1939 // Call a little run-time stub to avoid blow-up for each bytecode. | |
1940 // The run-time runtime saves the right registers, depending on | |
1941 // the tosca in-state for the given template. | |
1942 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
1943 "entry must have been generated"); | |
1944 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); | |
1945 } | |
1946 | |
1947 | |
1948 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
1949 Label L; | |
1950 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
1951 StopInterpreterAt); | |
1952 __ jcc(Assembler::notEqual, L); | |
1953 __ int3(); | |
1954 __ bind(L); | |
1955 } | |
1956 #endif // !PRODUCT | |
1957 #endif // CC_INTERP |