Mercurial > hg > truffle
annotate src/cpu/sparc/vm/cppInterpreter_sparc.cpp @ 11954:905c26108117
removed warning
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 10 Oct 2013 12:05:39 +0200 |
parents | 603ca7e51354 |
children | bd3237e0e18d |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "asm/assembler.hpp" | |
27 #include "interpreter/bytecodeHistogram.hpp" | |
28 #include "interpreter/cppInterpreter.hpp" | |
29 #include "interpreter/interpreter.hpp" | |
30 #include "interpreter/interpreterGenerator.hpp" | |
31 #include "interpreter/interpreterRuntime.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/interfaceSupport.hpp" | |
42 #include "runtime/sharedRuntime.hpp" | |
43 #include "runtime/stubRoutines.hpp" | |
44 #include "runtime/synchronizer.hpp" | |
45 #include "runtime/timer.hpp" | |
46 #include "runtime/vframeArray.hpp" | |
47 #include "utilities/debug.hpp" | |
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48 #include "utilities/macros.hpp" |
1972 | 49 #ifdef SHARK |
50 #include "shark/shark_globals.hpp" | |
51 #endif | |
0 | 52 |
53 #ifdef CC_INTERP | |
54 | |
55 // Routine exists to make tracebacks look decent in debugger | |
56 // while "shadow" interpreter frames are on stack. It is also | |
57 // used to distinguish interpreter frames. | |
58 | |
59 extern "C" void RecursiveInterpreterActivation(interpreterState istate) { | |
60 ShouldNotReachHere(); | |
61 } | |
62 | |
63 bool CppInterpreter::contains(address pc) { | |
64 return ( _code->contains(pc) || | |
65 ( pc == (CAST_FROM_FN_PTR(address, RecursiveInterpreterActivation) + frame::pc_return_offset))); | |
66 } | |
67 | |
68 #define STATE(field_name) Lstate, in_bytes(byte_offset_of(BytecodeInterpreter, field_name)) | |
69 #define __ _masm-> | |
70 | |
71 Label frame_manager_entry; | |
72 Label fast_accessor_slow_entry_path; // fast accessor methods need to be able to jmp to unsynchronized | |
73 // c++ interpreter entry point this holds that entry point label. | |
74 | |
75 static address unctrap_frame_manager_entry = NULL; | |
76 | |
77 static address interpreter_return_address = NULL; | |
78 static address deopt_frame_manager_return_atos = NULL; | |
79 static address deopt_frame_manager_return_btos = NULL; | |
80 static address deopt_frame_manager_return_itos = NULL; | |
81 static address deopt_frame_manager_return_ltos = NULL; | |
82 static address deopt_frame_manager_return_ftos = NULL; | |
83 static address deopt_frame_manager_return_dtos = NULL; | |
84 static address deopt_frame_manager_return_vtos = NULL; | |
85 | |
86 const Register prevState = G1_scratch; | |
87 | |
88 void InterpreterGenerator::save_native_result(void) { | |
89 // result potentially in O0/O1: save it across calls | |
90 __ stf(FloatRegisterImpl::D, F0, STATE(_native_fresult)); | |
91 #ifdef _LP64 | |
92 __ stx(O0, STATE(_native_lresult)); | |
93 #else | |
94 __ std(O0, STATE(_native_lresult)); | |
95 #endif | |
96 } | |
97 | |
98 void InterpreterGenerator::restore_native_result(void) { | |
99 | |
100 // Restore any method result value | |
101 __ ldf(FloatRegisterImpl::D, STATE(_native_fresult), F0); | |
102 #ifdef _LP64 | |
103 __ ldx(STATE(_native_lresult), O0); | |
104 #else | |
105 __ ldd(STATE(_native_lresult), O0); | |
106 #endif | |
107 } | |
108 | |
109 // A result handler converts/unboxes a native call result into | |
110 // a java interpreter/compiler result. The current frame is an | |
111 // interpreter frame. The activation frame unwind code must be | |
112 // consistent with that of TemplateTable::_return(...). In the | |
113 // case of native methods, the caller's SP was not modified. | |
114 address CppInterpreterGenerator::generate_result_handler_for(BasicType type) { | |
115 address entry = __ pc(); | |
116 Register Itos_i = Otos_i ->after_save(); | |
117 Register Itos_l = Otos_l ->after_save(); | |
118 Register Itos_l1 = Otos_l1->after_save(); | |
119 Register Itos_l2 = Otos_l2->after_save(); | |
120 switch (type) { | |
121 case T_BOOLEAN: __ subcc(G0, O0, G0); __ addc(G0, 0, Itos_i); break; // !0 => true; 0 => false | |
122 case T_CHAR : __ sll(O0, 16, O0); __ srl(O0, 16, Itos_i); break; // cannot use and3, 0xFFFF too big as immediate value! | |
123 case T_BYTE : __ sll(O0, 24, O0); __ sra(O0, 24, Itos_i); break; | |
124 case T_SHORT : __ sll(O0, 16, O0); __ sra(O0, 16, Itos_i); break; | |
125 case T_LONG : | |
126 #ifndef _LP64 | |
127 __ mov(O1, Itos_l2); // move other half of long | |
128 #endif // ifdef or no ifdef, fall through to the T_INT case | |
129 case T_INT : __ mov(O0, Itos_i); break; | |
130 case T_VOID : /* nothing to do */ break; | |
131 case T_FLOAT : assert(F0 == Ftos_f, "fix this code" ); break; | |
132 case T_DOUBLE : assert(F0 == Ftos_d, "fix this code" ); break; | |
133 case T_OBJECT : | |
134 __ ld_ptr(STATE(_oop_temp), Itos_i); | |
135 __ verify_oop(Itos_i); | |
136 break; | |
137 default : ShouldNotReachHere(); | |
138 } | |
139 __ ret(); // return from interpreter activation | |
140 __ delayed()->restore(I5_savedSP, G0, SP); // remove interpreter frame | |
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141 NOT_PRODUCT(__ emit_int32(0);) // marker for disassembly |
0 | 142 return entry; |
143 } | |
144 | |
145 // tosca based result to c++ interpreter stack based result. | |
146 // Result goes to address in L1_scratch | |
147 | |
148 address CppInterpreterGenerator::generate_tosca_to_stack_converter(BasicType type) { | |
149 // A result is in the native abi result register from a native method call. | |
150 // We need to return this result to the interpreter by pushing the result on the interpreter's | |
151 // stack. This is relatively simple the destination is in L1_scratch | |
152 // i.e. L1_scratch is the first free element on the stack. If we "push" a return value we must | |
153 // adjust L1_scratch | |
154 address entry = __ pc(); | |
155 switch (type) { | |
156 case T_BOOLEAN: | |
157 // !0 => true; 0 => false | |
158 __ subcc(G0, O0, G0); | |
159 __ addc(G0, 0, O0); | |
160 __ st(O0, L1_scratch, 0); | |
161 __ sub(L1_scratch, wordSize, L1_scratch); | |
162 break; | |
163 | |
164 // cannot use and3, 0xFFFF too big as immediate value! | |
165 case T_CHAR : | |
166 __ sll(O0, 16, O0); | |
167 __ srl(O0, 16, O0); | |
168 __ st(O0, L1_scratch, 0); | |
169 __ sub(L1_scratch, wordSize, L1_scratch); | |
170 break; | |
171 | |
172 case T_BYTE : | |
173 __ sll(O0, 24, O0); | |
174 __ sra(O0, 24, O0); | |
175 __ st(O0, L1_scratch, 0); | |
176 __ sub(L1_scratch, wordSize, L1_scratch); | |
177 break; | |
178 | |
179 case T_SHORT : | |
180 __ sll(O0, 16, O0); | |
181 __ sra(O0, 16, O0); | |
182 __ st(O0, L1_scratch, 0); | |
183 __ sub(L1_scratch, wordSize, L1_scratch); | |
184 break; | |
185 case T_LONG : | |
186 #ifndef _LP64 | |
123 | 187 #if defined(COMPILER2) |
0 | 188 // All return values are where we want them, except for Longs. C2 returns |
189 // longs in G1 in the 32-bit build whereas the interpreter wants them in O0/O1. | |
190 // Since the interpreter will return longs in G1 and O0/O1 in the 32bit | |
191 // build even if we are returning from interpreted we just do a little | |
192 // stupid shuffing. | |
193 // Note: I tried to make c2 return longs in O0/O1 and G1 so we wouldn't have to | |
194 // do this here. Unfortunately if we did a rethrow we'd see an machepilog node | |
195 // first which would move g1 -> O0/O1 and destroy the exception we were throwing. | |
196 __ stx(G1, L1_scratch, -wordSize); | |
197 #else | |
198 // native result is in O0, O1 | |
199 __ st(O1, L1_scratch, 0); // Low order | |
200 __ st(O0, L1_scratch, -wordSize); // High order | |
123 | 201 #endif /* COMPILER2 */ |
0 | 202 #else |
123 | 203 __ stx(O0, L1_scratch, -wordSize); |
0 | 204 #endif |
205 __ sub(L1_scratch, 2*wordSize, L1_scratch); | |
206 break; | |
207 | |
208 case T_INT : | |
209 __ st(O0, L1_scratch, 0); | |
210 __ sub(L1_scratch, wordSize, L1_scratch); | |
211 break; | |
212 | |
213 case T_VOID : /* nothing to do */ | |
214 break; | |
215 | |
216 case T_FLOAT : | |
217 __ stf(FloatRegisterImpl::S, F0, L1_scratch, 0); | |
218 __ sub(L1_scratch, wordSize, L1_scratch); | |
219 break; | |
220 | |
221 case T_DOUBLE : | |
222 // Every stack slot is aligned on 64 bit, However is this | |
223 // the correct stack slot on 64bit?? QQQ | |
224 __ stf(FloatRegisterImpl::D, F0, L1_scratch, -wordSize); | |
225 __ sub(L1_scratch, 2*wordSize, L1_scratch); | |
226 break; | |
227 case T_OBJECT : | |
228 __ verify_oop(O0); | |
229 __ st_ptr(O0, L1_scratch, 0); | |
230 __ sub(L1_scratch, wordSize, L1_scratch); | |
231 break; | |
232 default : ShouldNotReachHere(); | |
233 } | |
234 __ retl(); // return from interpreter activation | |
235 __ delayed()->nop(); // schedule this better | |
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236 NOT_PRODUCT(__ emit_int32(0);) // marker for disassembly |
0 | 237 return entry; |
238 } | |
239 | |
240 address CppInterpreterGenerator::generate_stack_to_stack_converter(BasicType type) { | |
241 // A result is in the java expression stack of the interpreted method that has just | |
242 // returned. Place this result on the java expression stack of the caller. | |
243 // | |
244 // The current interpreter activation in Lstate is for the method just returning its | |
245 // result. So we know that the result of this method is on the top of the current | |
246 // execution stack (which is pre-pushed) and will be return to the top of the caller | |
247 // stack. The top of the callers stack is the bottom of the locals of the current | |
248 // activation. | |
249 // Because of the way activation are managed by the frame manager the value of esp is | |
250 // below both the stack top of the current activation and naturally the stack top | |
251 // of the calling activation. This enable this routine to leave the return address | |
252 // to the frame manager on the stack and do a vanilla return. | |
253 // | |
254 // On entry: O0 - points to source (callee stack top) | |
255 // O1 - points to destination (caller stack top [i.e. free location]) | |
256 // destroys O2, O3 | |
257 // | |
258 | |
259 address entry = __ pc(); | |
260 switch (type) { | |
261 case T_VOID: break; | |
262 break; | |
263 case T_FLOAT : | |
264 case T_BOOLEAN: | |
265 case T_CHAR : | |
266 case T_BYTE : | |
267 case T_SHORT : | |
268 case T_INT : | |
269 // 1 word result | |
270 __ ld(O0, 0, O2); | |
271 __ st(O2, O1, 0); | |
272 __ sub(O1, wordSize, O1); | |
273 break; | |
274 case T_DOUBLE : | |
275 case T_LONG : | |
276 // return top two words on current expression stack to caller's expression stack | |
277 // The caller's expression stack is adjacent to the current frame manager's intepretState | |
278 // except we allocated one extra word for this intepretState so we won't overwrite it | |
279 // when we return a two word result. | |
280 #ifdef _LP64 | |
281 __ ld_ptr(O0, 0, O2); | |
282 __ st_ptr(O2, O1, -wordSize); | |
283 #else | |
284 __ ld(O0, 0, O2); | |
285 __ ld(O0, wordSize, O3); | |
286 __ st(O3, O1, 0); | |
287 __ st(O2, O1, -wordSize); | |
288 #endif | |
289 __ sub(O1, 2*wordSize, O1); | |
290 break; | |
291 case T_OBJECT : | |
292 __ ld_ptr(O0, 0, O2); | |
293 __ verify_oop(O2); // verify it | |
294 __ st_ptr(O2, O1, 0); | |
295 __ sub(O1, wordSize, O1); | |
296 break; | |
297 default : ShouldNotReachHere(); | |
298 } | |
299 __ retl(); | |
300 __ delayed()->nop(); // QQ schedule this better | |
301 return entry; | |
302 } | |
303 | |
304 address CppInterpreterGenerator::generate_stack_to_native_abi_converter(BasicType type) { | |
305 // A result is in the java expression stack of the interpreted method that has just | |
306 // returned. Place this result in the native abi that the caller expects. | |
307 // We are in a new frame registers we set must be in caller (i.e. callstub) frame. | |
308 // | |
309 // Similar to generate_stack_to_stack_converter above. Called at a similar time from the | |
310 // frame manager execept in this situation the caller is native code (c1/c2/call_stub) | |
311 // and so rather than return result onto caller's java expression stack we return the | |
312 // result in the expected location based on the native abi. | |
313 // On entry: O0 - source (stack top) | |
314 // On exit result in expected output register | |
315 // QQQ schedule this better | |
316 | |
317 address entry = __ pc(); | |
318 switch (type) { | |
319 case T_VOID: break; | |
320 break; | |
321 case T_FLOAT : | |
322 __ ldf(FloatRegisterImpl::S, O0, 0, F0); | |
323 break; | |
324 case T_BOOLEAN: | |
325 case T_CHAR : | |
326 case T_BYTE : | |
327 case T_SHORT : | |
328 case T_INT : | |
329 // 1 word result | |
330 __ ld(O0, 0, O0->after_save()); | |
331 break; | |
332 case T_DOUBLE : | |
333 __ ldf(FloatRegisterImpl::D, O0, 0, F0); | |
334 break; | |
335 case T_LONG : | |
336 // return top two words on current expression stack to caller's expression stack | |
337 // The caller's expression stack is adjacent to the current frame manager's interpretState | |
338 // except we allocated one extra word for this intepretState so we won't overwrite it | |
339 // when we return a two word result. | |
340 #ifdef _LP64 | |
341 __ ld_ptr(O0, 0, O0->after_save()); | |
342 #else | |
343 __ ld(O0, wordSize, O1->after_save()); | |
344 __ ld(O0, 0, O0->after_save()); | |
345 #endif | |
346 #if defined(COMPILER2) && !defined(_LP64) | |
347 // C2 expects long results in G1 we can't tell if we're returning to interpreted | |
348 // or compiled so just be safe use G1 and O0/O1 | |
349 | |
350 // Shift bits into high (msb) of G1 | |
351 __ sllx(Otos_l1->after_save(), 32, G1); | |
352 // Zero extend low bits | |
353 __ srl (Otos_l2->after_save(), 0, Otos_l2->after_save()); | |
354 __ or3 (Otos_l2->after_save(), G1, G1); | |
355 #endif /* COMPILER2 */ | |
356 break; | |
357 case T_OBJECT : | |
358 __ ld_ptr(O0, 0, O0->after_save()); | |
359 __ verify_oop(O0->after_save()); // verify it | |
360 break; | |
361 default : ShouldNotReachHere(); | |
362 } | |
363 __ retl(); | |
364 __ delayed()->nop(); | |
365 return entry; | |
366 } | |
367 | |
368 address CppInterpreter::return_entry(TosState state, int length) { | |
369 // make it look good in the debugger | |
370 return CAST_FROM_FN_PTR(address, RecursiveInterpreterActivation) + frame::pc_return_offset; | |
371 } | |
372 | |
373 address CppInterpreter::deopt_entry(TosState state, int length) { | |
374 address ret = NULL; | |
375 if (length != 0) { | |
376 switch (state) { | |
377 case atos: ret = deopt_frame_manager_return_atos; break; | |
378 case btos: ret = deopt_frame_manager_return_btos; break; | |
379 case ctos: | |
380 case stos: | |
381 case itos: ret = deopt_frame_manager_return_itos; break; | |
382 case ltos: ret = deopt_frame_manager_return_ltos; break; | |
383 case ftos: ret = deopt_frame_manager_return_ftos; break; | |
384 case dtos: ret = deopt_frame_manager_return_dtos; break; | |
385 case vtos: ret = deopt_frame_manager_return_vtos; break; | |
386 } | |
387 } else { | |
388 ret = unctrap_frame_manager_entry; // re-execute the bytecode ( e.g. uncommon trap) | |
389 } | |
390 assert(ret != NULL, "Not initialized"); | |
391 return ret; | |
392 } | |
393 | |
394 // | |
395 // Helpers for commoning out cases in the various type of method entries. | |
396 // | |
397 | |
398 // increment invocation count & check for overflow | |
399 // | |
400 // Note: checking for negative value instead of overflow | |
401 // so we have a 'sticky' overflow test | |
402 // | |
403 // Lmethod: method | |
404 // ??: invocation counter | |
405 // | |
406 void InterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) { | |
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407 Label done; |
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408 const Register Rcounters = G3_scratch; |
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409 |
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410 __ ld_ptr(STATE(_method), G5_method); |
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411 __ get_method_counters(G5_method, Rcounters, done); |
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412 |
0 | 413 // Update standard invocation counters |
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414 __ increment_invocation_counter(Rcounters, O0, G4_scratch); |
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415 if (ProfileInterpreter) { |
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416 Address interpreter_invocation_counter(Rcounters, 0, |
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417 in_bytes(MethodCounters::interpreter_invocation_counter_offset())); |
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418 __ ld(interpreter_invocation_counter, G4_scratch); |
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419 __ inc(G4_scratch); |
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420 __ st(G4_scratch, interpreter_invocation_counter); |
0 | 421 } |
422 | |
423 Address invocation_limit(G3_scratch, (address)&InvocationCounter::InterpreterInvocationLimit); | |
424 __ sethi(invocation_limit); | |
425 __ ld(invocation_limit, G3_scratch); | |
426 __ cmp(O0, G3_scratch); | |
427 __ br(Assembler::greaterEqualUnsigned, false, Assembler::pn, *overflow); | |
428 __ delayed()->nop(); | |
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429 __ bind(done); |
0 | 430 } |
431 | |
432 address InterpreterGenerator::generate_empty_entry(void) { | |
433 | |
434 // A method that does nothing but return... | |
435 | |
436 address entry = __ pc(); | |
437 Label slow_path; | |
438 | |
439 // do nothing for empty methods (do not even increment invocation counter) | |
440 if ( UseFastEmptyMethods) { | |
441 // If we need a safepoint check, generate full interpreter entry. | |
442 Address sync_state(G3_scratch, SafepointSynchronize::address_of_state()); | |
443 __ load_contents(sync_state, G3_scratch); | |
444 __ cmp(G3_scratch, SafepointSynchronize::_not_synchronized); | |
445 __ br(Assembler::notEqual, false, Assembler::pn, frame_manager_entry); | |
446 __ delayed()->nop(); | |
447 | |
448 // Code: _return | |
449 __ retl(); | |
450 __ delayed()->mov(O5_savedSP, SP); | |
451 return entry; | |
452 } | |
453 return NULL; | |
454 } | |
455 | |
456 // Call an accessor method (assuming it is resolved, otherwise drop into | |
457 // vanilla (slow path) entry | |
458 | |
459 // Generates code to elide accessor methods | |
460 // Uses G3_scratch and G1_scratch as scratch | |
461 address InterpreterGenerator::generate_accessor_entry(void) { | |
462 | |
463 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites thereof; | |
464 // parameter size = 1 | |
465 // Note: We can only use this code if the getfield has been resolved | |
466 // and if we don't have a null-pointer exception => check for | |
467 // these conditions first and use slow path if necessary. | |
468 address entry = __ pc(); | |
469 Label slow_path; | |
470 | |
471 if ( UseFastAccessorMethods) { | |
472 // Check if we need to reach a safepoint and generate full interpreter | |
473 // frame if so. | |
474 Address sync_state(G3_scratch, SafepointSynchronize::address_of_state()); | |
475 __ load_contents(sync_state, G3_scratch); | |
476 __ cmp(G3_scratch, SafepointSynchronize::_not_synchronized); | |
477 __ br(Assembler::notEqual, false, Assembler::pn, slow_path); | |
478 __ delayed()->nop(); | |
479 | |
480 // Check if local 0 != NULL | |
481 __ ld_ptr(Gargs, G0, Otos_i ); // get local 0 | |
482 __ tst(Otos_i); // check if local 0 == NULL and go the slow path | |
483 __ brx(Assembler::zero, false, Assembler::pn, slow_path); | |
484 __ delayed()->nop(); | |
485 | |
486 | |
487 // read first instruction word and extract bytecode @ 1 and index @ 2 | |
488 // get first 4 bytes of the bytecodes (big endian!) | |
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489 __ ld_ptr(Address(G5_method, 0, in_bytes(Method::const_offset())), G1_scratch); |
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490 __ ld(Address(G1_scratch, 0, in_bytes(ConstMethod::codes_offset())), G1_scratch); |
0 | 491 |
492 // move index @ 2 far left then to the right most two bytes. | |
493 __ sll(G1_scratch, 2*BitsPerByte, G1_scratch); | |
494 __ srl(G1_scratch, 2*BitsPerByte - exact_log2(in_words( | |
495 ConstantPoolCacheEntry::size()) * BytesPerWord), G1_scratch); | |
496 | |
497 // get constant pool cache | |
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498 __ ld_ptr(G5_method, in_bytes(Method::const_offset()), G3_scratch); |
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499 __ ld_ptr(G3_scratch, in_bytes(ConstMethod::constants_offset()), G3_scratch); |
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500 __ ld_ptr(G3_scratch, ConstantPool::cache_offset_in_bytes(), G3_scratch); |
0 | 501 |
502 // get specific constant pool cache entry | |
503 __ add(G3_scratch, G1_scratch, G3_scratch); | |
504 | |
505 // Check the constant Pool cache entry to see if it has been resolved. | |
506 // If not, need the slow path. | |
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507 ByteSize cp_base_offset = ConstantPoolCache::base_offset(); |
0 | 508 __ ld_ptr(G3_scratch, in_bytes(cp_base_offset + ConstantPoolCacheEntry::indices_offset()), G1_scratch); |
509 __ srl(G1_scratch, 2*BitsPerByte, G1_scratch); | |
510 __ and3(G1_scratch, 0xFF, G1_scratch); | |
511 __ cmp(G1_scratch, Bytecodes::_getfield); | |
512 __ br(Assembler::notEqual, false, Assembler::pn, slow_path); | |
513 __ delayed()->nop(); | |
514 | |
515 // Get the type and return field offset from the constant pool cache | |
516 __ ld_ptr(G3_scratch, in_bytes(cp_base_offset + ConstantPoolCacheEntry::flags_offset()), G1_scratch); | |
517 __ ld_ptr(G3_scratch, in_bytes(cp_base_offset + ConstantPoolCacheEntry::f2_offset()), G3_scratch); | |
518 | |
519 Label xreturn_path; | |
520 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
521 // because they are different sizes. | |
522 // Get the type from the constant pool cache | |
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523 __ srl(G1_scratch, ConstantPoolCacheEntry::tos_state_shift, G1_scratch); |
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524 // Make sure we don't need to mask G1_scratch after the above shift |
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525 ConstantPoolCacheEntry::verify_tos_state_shift(); |
0 | 526 __ cmp(G1_scratch, atos ); |
527 __ br(Assembler::equal, true, Assembler::pt, xreturn_path); | |
528 __ delayed()->ld_ptr(Otos_i, G3_scratch, Otos_i); | |
529 __ cmp(G1_scratch, itos); | |
530 __ br(Assembler::equal, true, Assembler::pt, xreturn_path); | |
531 __ delayed()->ld(Otos_i, G3_scratch, Otos_i); | |
532 __ cmp(G1_scratch, stos); | |
533 __ br(Assembler::equal, true, Assembler::pt, xreturn_path); | |
534 __ delayed()->ldsh(Otos_i, G3_scratch, Otos_i); | |
535 __ cmp(G1_scratch, ctos); | |
536 __ br(Assembler::equal, true, Assembler::pt, xreturn_path); | |
537 __ delayed()->lduh(Otos_i, G3_scratch, Otos_i); | |
538 #ifdef ASSERT | |
539 __ cmp(G1_scratch, btos); | |
540 __ br(Assembler::equal, true, Assembler::pt, xreturn_path); | |
541 __ delayed()->ldsb(Otos_i, G3_scratch, Otos_i); | |
542 __ should_not_reach_here(); | |
543 #endif | |
544 __ ldsb(Otos_i, G3_scratch, Otos_i); | |
545 __ bind(xreturn_path); | |
546 | |
547 // _ireturn/_areturn | |
548 __ retl(); // return from leaf routine | |
549 __ delayed()->mov(O5_savedSP, SP); | |
550 | |
551 // Generate regular method entry | |
552 __ bind(slow_path); | |
3839 | 553 __ ba(fast_accessor_slow_entry_path); |
0 | 554 __ delayed()->nop(); |
555 return entry; | |
556 } | |
557 return NULL; | |
558 } | |
559 | |
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560 address InterpreterGenerator::generate_Reference_get_entry(void) { |
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561 #if INCLUDE_ALL_GCS |
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562 if (UseG1GC) { |
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563 // We need to generate have a routine that generates code to: |
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564 // * load the value in the referent field |
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565 // * passes that value to the pre-barrier. |
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566 // |
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567 // In the case of G1 this will record the value of the |
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568 // referent in an SATB buffer if marking is active. |
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569 // This will cause concurrent marking to mark the referent |
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570 // field as live. |
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571 Unimplemented(); |
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572 } |
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573 #endif // INCLUDE_ALL_GCS |
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574 |
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575 // If G1 is not enabled then attempt to go through the accessor entry point |
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576 // Reference.get is an accessor |
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577 return generate_accessor_entry(); |
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578 } |
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579 |
0 | 580 // |
581 // Interpreter stub for calling a native method. (C++ interpreter) | |
582 // This sets up a somewhat different looking stack for calling the native method | |
583 // than the typical interpreter frame setup. | |
584 // | |
585 | |
586 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
587 address entry = __ pc(); | |
588 | |
589 // the following temporary registers are used during frame creation | |
590 const Register Gtmp1 = G3_scratch ; | |
591 const Register Gtmp2 = G1_scratch; | |
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592 const Register RconstMethod = Gtmp1; |
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593 const Address constMethod(G5_method, 0, in_bytes(Method::const_offset())); |
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594 const Address size_of_parameters(RconstMethod, 0, in_bytes(ConstMethod::size_of_parameters_offset())); |
0 | 595 |
596 bool inc_counter = UseCompiler || CountCompiledCalls; | |
597 | |
598 // make sure registers are different! | |
599 assert_different_registers(G2_thread, G5_method, Gargs, Gtmp1, Gtmp2); | |
600 | |
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601 const Address access_flags (G5_method, 0, in_bytes(Method::access_flags_offset())); |
0 | 602 |
603 Label Lentry; | |
604 __ bind(Lentry); | |
605 | |
606 const Register Glocals_size = G3; | |
607 assert_different_registers(Glocals_size, G4_scratch, Gframe_size); | |
608 | |
609 // make sure method is native & not abstract | |
610 // rethink these assertions - they can be simplified and shared (gri 2/25/2000) | |
611 #ifdef ASSERT | |
612 __ ld(access_flags, Gtmp1); | |
613 { | |
614 Label L; | |
615 __ btst(JVM_ACC_NATIVE, Gtmp1); | |
616 __ br(Assembler::notZero, false, Assembler::pt, L); | |
617 __ delayed()->nop(); | |
618 __ stop("tried to execute non-native method as native"); | |
619 __ bind(L); | |
620 } | |
621 { Label L; | |
622 __ btst(JVM_ACC_ABSTRACT, Gtmp1); | |
623 __ br(Assembler::zero, false, Assembler::pt, L); | |
624 __ delayed()->nop(); | |
625 __ stop("tried to execute abstract method as non-abstract"); | |
626 __ bind(L); | |
627 } | |
628 #endif // ASSERT | |
629 | |
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630 __ ld_ptr(constMethod, RconstMethod); |
0 | 631 __ lduh(size_of_parameters, Gtmp1); |
632 __ sll(Gtmp1, LogBytesPerWord, Gtmp2); // parameter size in bytes | |
633 __ add(Gargs, Gtmp2, Gargs); // points to first local + BytesPerWord | |
634 // NEW | |
635 __ add(Gargs, -wordSize, Gargs); // points to first local[0] | |
636 // generate the code to allocate the interpreter stack frame | |
637 // NEW FRAME ALLOCATED HERE | |
638 // save callers original sp | |
639 // __ mov(SP, I5_savedSP->after_restore()); | |
640 | |
641 generate_compute_interpreter_state(Lstate, G0, true); | |
642 | |
643 // At this point Lstate points to new interpreter state | |
644 // | |
645 | |
646 const Address do_not_unlock_if_synchronized(G2_thread, 0, | |
647 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
648 // Since at this point in the method invocation the exception handler | |
649 // would try to exit the monitor of synchronized methods which hasn't | |
650 // been entered yet, we set the thread local variable | |
651 // _do_not_unlock_if_synchronized to true. If any exception was thrown by | |
652 // runtime, exception handling i.e. unlock_if_synchronized_method will | |
653 // check this thread local flag. | |
654 // This flag has two effects, one is to force an unwind in the topmost | |
655 // interpreter frame and not perform an unlock while doing so. | |
656 | |
657 __ movbool(true, G3_scratch); | |
658 __ stbool(G3_scratch, do_not_unlock_if_synchronized); | |
659 | |
660 | |
661 // increment invocation counter and check for overflow | |
662 // | |
663 // Note: checking for negative value instead of overflow | |
664 // so we have a 'sticky' overflow test (may be of | |
665 // importance as soon as we have true MT/MP) | |
666 Label invocation_counter_overflow; | |
667 if (inc_counter) { | |
668 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
669 } | |
670 Label Lcontinue; | |
671 __ bind(Lcontinue); | |
672 | |
673 bang_stack_shadow_pages(true); | |
674 // reset the _do_not_unlock_if_synchronized flag | |
675 __ stbool(G0, do_not_unlock_if_synchronized); | |
676 | |
677 // check for synchronized methods | |
678 // Must happen AFTER invocation_counter check, so method is not locked | |
679 // if counter overflows. | |
680 | |
681 if (synchronized) { | |
682 lock_method(); | |
683 // Don't see how G2_thread is preserved here... | |
684 // __ verify_thread(); QQQ destroys L0,L1 can't use | |
685 } else { | |
686 #ifdef ASSERT | |
687 { Label ok; | |
688 __ ld_ptr(STATE(_method), G5_method); | |
689 __ ld(access_flags, O0); | |
690 __ btst(JVM_ACC_SYNCHRONIZED, O0); | |
691 __ br( Assembler::zero, false, Assembler::pt, ok); | |
692 __ delayed()->nop(); | |
693 __ stop("method needs synchronization"); | |
694 __ bind(ok); | |
695 } | |
696 #endif // ASSERT | |
697 } | |
698 | |
699 // start execution | |
700 | |
701 // __ verify_thread(); kills L1,L2 can't use at the moment | |
702 | |
703 // jvmti/jvmpi support | |
704 __ notify_method_entry(); | |
705 | |
706 // native call | |
707 | |
708 // (note that O0 is never an oop--at most it is a handle) | |
709 // It is important not to smash any handles created by this call, | |
710 // until any oop handle in O0 is dereferenced. | |
711 | |
712 // (note that the space for outgoing params is preallocated) | |
713 | |
714 // get signature handler | |
715 | |
716 Label pending_exception_present; | |
717 | |
718 { Label L; | |
719 __ ld_ptr(STATE(_method), G5_method); | |
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720 __ ld_ptr(Address(G5_method, 0, in_bytes(Method::signature_handler_offset())), G3_scratch); |
0 | 721 __ tst(G3_scratch); |
722 __ brx(Assembler::notZero, false, Assembler::pt, L); | |
723 __ delayed()->nop(); | |
724 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), G5_method, false); | |
725 __ ld_ptr(STATE(_method), G5_method); | |
726 | |
727 Address exception_addr(G2_thread, 0, in_bytes(Thread::pending_exception_offset())); | |
728 __ ld_ptr(exception_addr, G3_scratch); | |
3839 | 729 __ br_notnull_short(G3_scratch, Assembler::pn, pending_exception_present); |
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730 __ ld_ptr(Address(G5_method, 0, in_bytes(Method::signature_handler_offset())), G3_scratch); |
0 | 731 __ bind(L); |
732 } | |
733 | |
734 // Push a new frame so that the args will really be stored in | |
735 // Copy a few locals across so the new frame has the variables | |
736 // we need but these values will be dead at the jni call and | |
737 // therefore not gc volatile like the values in the current | |
738 // frame (Lstate in particular) | |
739 | |
740 // Flush the state pointer to the register save area | |
741 // Which is the only register we need for a stack walk. | |
742 __ st_ptr(Lstate, SP, (Lstate->sp_offset_in_saved_window() * wordSize) + STACK_BIAS); | |
743 | |
744 __ mov(Lstate, O1); // Need to pass the state pointer across the frame | |
745 | |
746 // Calculate current frame size | |
747 __ sub(SP, FP, O3); // Calculate negative of current frame size | |
748 __ save(SP, O3, SP); // Allocate an identical sized frame | |
749 | |
750 __ mov(I1, Lstate); // In the "natural" register. | |
751 | |
752 // Note I7 has leftover trash. Slow signature handler will fill it in | |
753 // should we get there. Normal jni call will set reasonable last_Java_pc | |
754 // below (and fix I7 so the stack trace doesn't have a meaningless frame | |
755 // in it). | |
756 | |
757 | |
758 // call signature handler | |
759 __ ld_ptr(STATE(_method), Lmethod); | |
760 __ ld_ptr(STATE(_locals), Llocals); | |
761 | |
762 __ callr(G3_scratch, 0); | |
763 __ delayed()->nop(); | |
764 __ ld_ptr(STATE(_thread), G2_thread); // restore thread (shouldn't be needed) | |
765 | |
766 { Label not_static; | |
767 | |
768 __ ld_ptr(STATE(_method), G5_method); | |
769 __ ld(access_flags, O0); | |
770 __ btst(JVM_ACC_STATIC, O0); | |
771 __ br( Assembler::zero, false, Assembler::pt, not_static); | |
772 __ delayed()-> | |
773 // get native function entry point(O0 is a good temp until the very end) | |
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774 ld_ptr(Address(G5_method, 0, in_bytes(Method::native_function_offset())), O0); |
0 | 775 // for static methods insert the mirror argument |
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776 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
0 | 777 |
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778 __ ld_ptr(Address(G5_method, 0, in_bytes(Method:: const_offset())), O1); |
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779 __ ld_ptr(Address(O1, 0, in_bytes(ConstMethod::constants_offset())), O1); |
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780 __ ld_ptr(Address(O1, 0, ConstantPool::pool_holder_offset_in_bytes()), O1); |
0 | 781 __ ld_ptr(O1, mirror_offset, O1); |
782 // where the mirror handle body is allocated: | |
783 #ifdef ASSERT | |
784 if (!PrintSignatureHandlers) // do not dirty the output with this | |
785 { Label L; | |
786 __ tst(O1); | |
787 __ brx(Assembler::notZero, false, Assembler::pt, L); | |
788 __ delayed()->nop(); | |
789 __ stop("mirror is missing"); | |
790 __ bind(L); | |
791 } | |
792 #endif // ASSERT | |
793 __ st_ptr(O1, STATE(_oop_temp)); | |
794 __ add(STATE(_oop_temp), O1); // this is really an LEA not an add | |
795 __ bind(not_static); | |
796 } | |
797 | |
798 // At this point, arguments have been copied off of stack into | |
799 // their JNI positions, which are O1..O5 and SP[68..]. | |
800 // Oops are boxed in-place on the stack, with handles copied to arguments. | |
801 // The result handler is in Lscratch. O0 will shortly hold the JNIEnv*. | |
802 | |
803 #ifdef ASSERT | |
804 { Label L; | |
805 __ tst(O0); | |
806 __ brx(Assembler::notZero, false, Assembler::pt, L); | |
807 __ delayed()->nop(); | |
808 __ stop("native entry point is missing"); | |
809 __ bind(L); | |
810 } | |
811 #endif // ASSERT | |
812 | |
813 // | |
814 // setup the java frame anchor | |
815 // | |
816 // The scavenge function only needs to know that the PC of this frame is | |
817 // in the interpreter method entry code, it doesn't need to know the exact | |
818 // PC and hence we can use O7 which points to the return address from the | |
819 // previous call in the code stream (signature handler function) | |
820 // | |
821 // The other trick is we set last_Java_sp to FP instead of the usual SP because | |
822 // we have pushed the extra frame in order to protect the volatile register(s) | |
823 // in that frame when we return from the jni call | |
824 // | |
825 | |
826 | |
827 __ set_last_Java_frame(FP, O7); | |
828 __ mov(O7, I7); // make dummy interpreter frame look like one above, | |
829 // not meaningless information that'll confuse me. | |
830 | |
831 // flush the windows now. We don't care about the current (protection) frame | |
832 // only the outer frames | |
833 | |
834 __ flush_windows(); | |
835 | |
836 // mark windows as flushed | |
837 Address flags(G2_thread, | |
838 0, | |
839 in_bytes(JavaThread::frame_anchor_offset()) + in_bytes(JavaFrameAnchor::flags_offset())); | |
840 __ set(JavaFrameAnchor::flushed, G3_scratch); | |
841 __ st(G3_scratch, flags); | |
842 | |
843 // Transition from _thread_in_Java to _thread_in_native. We are already safepoint ready. | |
844 | |
845 Address thread_state(G2_thread, 0, in_bytes(JavaThread::thread_state_offset())); | |
846 #ifdef ASSERT | |
847 { Label L; | |
848 __ ld(thread_state, G3_scratch); | |
849 __ cmp(G3_scratch, _thread_in_Java); | |
850 __ br(Assembler::equal, false, Assembler::pt, L); | |
851 __ delayed()->nop(); | |
852 __ stop("Wrong thread state in native stub"); | |
853 __ bind(L); | |
854 } | |
855 #endif // ASSERT | |
856 __ set(_thread_in_native, G3_scratch); | |
857 __ st(G3_scratch, thread_state); | |
858 | |
859 // Call the jni method, using the delay slot to set the JNIEnv* argument. | |
860 __ callr(O0, 0); | |
861 __ delayed()-> | |
862 add(G2_thread, in_bytes(JavaThread::jni_environment_offset()), O0); | |
863 __ ld_ptr(STATE(_thread), G2_thread); // restore thread | |
864 | |
865 // must we block? | |
866 | |
867 // Block, if necessary, before resuming in _thread_in_Java state. | |
868 // In order for GC to work, don't clear the last_Java_sp until after blocking. | |
869 { Label no_block; | |
870 Address sync_state(G3_scratch, SafepointSynchronize::address_of_state()); | |
871 | |
872 // Switch thread to "native transition" state before reading the synchronization state. | |
873 // This additional state is necessary because reading and testing the synchronization | |
874 // state is not atomic w.r.t. GC, as this scenario demonstrates: | |
875 // Java thread A, in _thread_in_native state, loads _not_synchronized and is preempted. | |
876 // VM thread changes sync state to synchronizing and suspends threads for GC. | |
877 // Thread A is resumed to finish this native method, but doesn't block here since it | |
878 // didn't see any synchronization is progress, and escapes. | |
879 __ set(_thread_in_native_trans, G3_scratch); | |
880 __ st(G3_scratch, thread_state); | |
881 if(os::is_MP()) { | |
882 // Write serialization page so VM thread can do a pseudo remote membar. | |
883 // We use the current thread pointer to calculate a thread specific | |
884 // offset to write to within the page. This minimizes bus traffic | |
885 // due to cache line collision. | |
886 __ serialize_memory(G2_thread, G1_scratch, G3_scratch); | |
887 } | |
888 __ load_contents(sync_state, G3_scratch); | |
889 __ cmp(G3_scratch, SafepointSynchronize::_not_synchronized); | |
890 | |
891 | |
892 Label L; | |
893 Address suspend_state(G2_thread, 0, in_bytes(JavaThread::suspend_flags_offset())); | |
894 __ br(Assembler::notEqual, false, Assembler::pn, L); | |
895 __ delayed()-> | |
896 ld(suspend_state, G3_scratch); | |
897 __ cmp(G3_scratch, 0); | |
898 __ br(Assembler::equal, false, Assembler::pt, no_block); | |
899 __ delayed()->nop(); | |
900 __ bind(L); | |
901 | |
902 // Block. Save any potential method result value before the operation and | |
903 // use a leaf call to leave the last_Java_frame setup undisturbed. | |
904 save_native_result(); | |
905 __ call_VM_leaf(noreg, | |
906 CAST_FROM_FN_PTR(address, JavaThread::check_safepoint_and_suspend_for_native_trans), | |
907 G2_thread); | |
908 __ ld_ptr(STATE(_thread), G2_thread); // restore thread | |
909 // Restore any method result value | |
910 restore_native_result(); | |
911 __ bind(no_block); | |
912 } | |
913 | |
914 // Clear the frame anchor now | |
915 | |
916 __ reset_last_Java_frame(); | |
917 | |
918 // Move the result handler address | |
919 __ mov(Lscratch, G3_scratch); | |
920 // return possible result to the outer frame | |
921 #ifndef __LP64 | |
922 __ mov(O0, I0); | |
923 __ restore(O1, G0, O1); | |
924 #else | |
925 __ restore(O0, G0, O0); | |
926 #endif /* __LP64 */ | |
927 | |
928 // Move result handler to expected register | |
929 __ mov(G3_scratch, Lscratch); | |
930 | |
931 | |
932 // thread state is thread_in_native_trans. Any safepoint blocking has | |
933 // happened in the trampoline we are ready to switch to thread_in_Java. | |
934 | |
935 __ set(_thread_in_Java, G3_scratch); | |
936 __ st(G3_scratch, thread_state); | |
937 | |
938 // If we have an oop result store it where it will be safe for any further gc | |
939 // until we return now that we've released the handle it might be protected by | |
940 | |
941 { | |
942 Label no_oop, store_result; | |
943 | |
944 __ set((intptr_t)AbstractInterpreter::result_handler(T_OBJECT), G3_scratch); | |
945 __ cmp(G3_scratch, Lscratch); | |
946 __ brx(Assembler::notEqual, false, Assembler::pt, no_oop); | |
947 __ delayed()->nop(); | |
948 __ addcc(G0, O0, O0); | |
949 __ brx(Assembler::notZero, true, Assembler::pt, store_result); // if result is not NULL: | |
950 __ delayed()->ld_ptr(O0, 0, O0); // unbox it | |
951 __ mov(G0, O0); | |
952 | |
953 __ bind(store_result); | |
954 // Store it where gc will look for it and result handler expects it. | |
955 __ st_ptr(O0, STATE(_oop_temp)); | |
956 | |
957 __ bind(no_oop); | |
958 | |
959 } | |
960 | |
961 // reset handle block | |
962 __ ld_ptr(G2_thread, in_bytes(JavaThread::active_handles_offset()), G3_scratch); | |
963 __ st_ptr(G0, G3_scratch, JNIHandleBlock::top_offset_in_bytes()); | |
964 | |
965 | |
966 // handle exceptions (exception handling will handle unlocking!) | |
967 { Label L; | |
968 Address exception_addr (G2_thread, 0, in_bytes(Thread::pending_exception_offset())); | |
969 | |
970 __ ld_ptr(exception_addr, Gtemp); | |
971 __ tst(Gtemp); | |
972 __ brx(Assembler::equal, false, Assembler::pt, L); | |
973 __ delayed()->nop(); | |
974 __ bind(pending_exception_present); | |
975 // With c++ interpreter we just leave it pending caller will do the correct thing. However... | |
976 // Like x86 we ignore the result of the native call and leave the method locked. This | |
977 // seems wrong to leave things locked. | |
978 | |
979 __ br(Assembler::always, false, Assembler::pt, StubRoutines::forward_exception_entry(), relocInfo::runtime_call_type); | |
980 __ delayed()->restore(I5_savedSP, G0, SP); // remove interpreter frame | |
981 | |
982 __ bind(L); | |
983 } | |
984 | |
985 // jvmdi/jvmpi support (preserves thread register) | |
986 __ notify_method_exit(true, ilgl, InterpreterMacroAssembler::NotifyJVMTI); | |
987 | |
988 if (synchronized) { | |
989 // save and restore any potential method result value around the unlocking operation | |
990 save_native_result(); | |
991 | |
992 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
993 // Get the initial monitor we allocated | |
994 __ sub(Lstate, entry_size, O1); // initial monitor | |
995 __ unlock_object(O1); | |
996 restore_native_result(); | |
997 } | |
998 | |
999 #if defined(COMPILER2) && !defined(_LP64) | |
1000 | |
1001 // C2 expects long results in G1 we can't tell if we're returning to interpreted | |
1002 // or compiled so just be safe. | |
1003 | |
1004 __ sllx(O0, 32, G1); // Shift bits into high G1 | |
1005 __ srl (O1, 0, O1); // Zero extend O1 | |
1006 __ or3 (O1, G1, G1); // OR 64 bits into G1 | |
1007 | |
1008 #endif /* COMPILER2 && !_LP64 */ | |
1009 | |
1010 #ifdef ASSERT | |
1011 { | |
1012 Label ok; | |
1013 __ cmp(I5_savedSP, FP); | |
1014 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, ok); | |
1015 __ delayed()->nop(); | |
1016 __ stop("bad I5_savedSP value"); | |
1017 __ should_not_reach_here(); | |
1018 __ bind(ok); | |
1019 } | |
1020 #endif | |
1021 // Calls result handler which POPS FRAME | |
1022 if (TraceJumps) { | |
1023 // Move target to register that is recordable | |
1024 __ mov(Lscratch, G3_scratch); | |
1025 __ JMP(G3_scratch, 0); | |
1026 } else { | |
1027 __ jmp(Lscratch, 0); | |
1028 } | |
1029 __ delayed()->nop(); | |
1030 | |
1031 if (inc_counter) { | |
1032 // handle invocation counter overflow | |
1033 __ bind(invocation_counter_overflow); | |
1034 generate_counter_overflow(Lcontinue); | |
1035 } | |
1036 | |
1037 | |
1038 return entry; | |
1039 } | |
1040 | |
1041 void CppInterpreterGenerator::generate_compute_interpreter_state(const Register state, | |
1042 const Register prev_state, | |
1043 bool native) { | |
1044 | |
1045 // On entry | |
1046 // G5_method - caller's method | |
1047 // Gargs - points to initial parameters (i.e. locals[0]) | |
1048 // G2_thread - valid? (C1 only??) | |
1049 // "prev_state" - contains any previous frame manager state which we must save a link | |
1050 // | |
1051 // On return | |
1052 // "state" is a pointer to the newly allocated state object. We must allocate and initialize | |
1053 // a new interpretState object and the method expression stack. | |
1054 | |
1055 assert_different_registers(state, prev_state); | |
1056 assert_different_registers(prev_state, G3_scratch); | |
1057 const Register Gtmp = G3_scratch; | |
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1058 const Address constMethod (G5_method, 0, in_bytes(Method::const_offset())); |
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1059 const Address access_flags (G5_method, 0, in_bytes(Method::access_flags_offset())); |
0 | 1060 |
1061 // slop factor is two extra slots on the expression stack so that | |
1062 // we always have room to store a result when returning from a call without parameters | |
1063 // that returns a result. | |
1064 | |
1065 const int slop_factor = 2*wordSize; | |
1066 | |
1067 const int fixed_size = ((sizeof(BytecodeInterpreter) + slop_factor) >> LogBytesPerWord) + // what is the slop factor? | |
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1068 Method::extra_stack_entries() + // extra stack for jsr 292 |
0 | 1069 frame::memory_parameter_word_sp_offset + // register save area + param window |
1070 (native ? frame::interpreter_frame_extra_outgoing_argument_words : 0); // JNI, class | |
1071 | |
1072 // XXX G5_method valid | |
1073 | |
1074 // Now compute new frame size | |
1075 | |
1076 if (native) { | |
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1077 const Register RconstMethod = Gtmp; |
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1078 const Address size_of_parameters(RconstMethod, 0, in_bytes(ConstMethod::size_of_parameters_offset())); |
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1079 __ ld_ptr(constMethod, RconstMethod); |
0 | 1080 __ lduh( size_of_parameters, Gtmp ); |
1081 __ calc_mem_param_words(Gtmp, Gtmp); // space for native call parameters passed on the stack in words | |
1082 } else { | |
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1083 // Full size expression stack |
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1084 __ ld_ptr(constMethod, Gtmp); |
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1085 __ lduh(Gtmp, in_bytes(ConstMethod::max_stack_offset()), Gtmp); |
0 | 1086 } |
1087 __ add(Gtmp, fixed_size, Gtmp); // plus the fixed portion | |
1088 | |
1089 __ neg(Gtmp); // negative space for stack/parameters in words | |
1090 __ and3(Gtmp, -WordsPerLong, Gtmp); // make multiple of 2 (SP must be 2-word aligned) | |
1091 __ sll(Gtmp, LogBytesPerWord, Gtmp); // negative space for frame in bytes | |
1092 | |
1093 // Need to do stack size check here before we fault on large frames | |
1094 | |
1095 Label stack_ok; | |
1096 | |
1097 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : | |
1098 (StackRedPages+StackYellowPages); | |
1099 | |
1100 | |
1101 __ ld_ptr(G2_thread, in_bytes(Thread::stack_base_offset()), O0); | |
1102 __ ld_ptr(G2_thread, in_bytes(Thread::stack_size_offset()), O1); | |
1103 // compute stack bottom | |
1104 __ sub(O0, O1, O0); | |
1105 | |
1106 // Avoid touching the guard pages | |
1107 // Also a fudge for frame size of BytecodeInterpreter::run | |
1108 // It varies from 1k->4k depending on build type | |
1109 const int fudge = 6 * K; | |
1110 | |
1111 __ set(fudge + (max_pages * os::vm_page_size()), O1); | |
1112 | |
1113 __ add(O0, O1, O0); | |
1114 __ sub(O0, Gtmp, O0); | |
1115 __ cmp(SP, O0); | |
1116 __ brx(Assembler::greaterUnsigned, false, Assembler::pt, stack_ok); | |
1117 __ delayed()->nop(); | |
1118 | |
1119 // throw exception return address becomes throwing pc | |
1120 | |
1121 __ call_VM(Oexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_StackOverflowError)); | |
1122 __ stop("never reached"); | |
1123 | |
1124 __ bind(stack_ok); | |
1125 | |
1126 __ save(SP, Gtmp, SP); // setup new frame and register window | |
1127 | |
1128 // New window I7 call_stub or previous activation | |
1129 // O6 - register save area, BytecodeInterpreter just below it, args/locals just above that | |
1130 // | |
1131 __ sub(FP, sizeof(BytecodeInterpreter), state); // Point to new Interpreter state | |
1132 __ add(state, STACK_BIAS, state ); // Account for 64bit bias | |
1133 | |
1134 #define XXX_STATE(field_name) state, in_bytes(byte_offset_of(BytecodeInterpreter, field_name)) | |
1135 | |
1136 // Initialize a new Interpreter state | |
1137 // orig_sp - caller's original sp | |
1138 // G2_thread - thread | |
1139 // Gargs - &locals[0] (unbiased?) | |
1140 // G5_method - method | |
1141 // SP (biased) - accounts for full size java stack, BytecodeInterpreter object, register save area, and register parameter save window | |
1142 | |
1143 | |
1144 __ set(0xdead0004, O1); | |
1145 | |
1146 | |
1147 __ st_ptr(Gargs, XXX_STATE(_locals)); | |
1148 __ st_ptr(G0, XXX_STATE(_oop_temp)); | |
1149 | |
1150 __ st_ptr(state, XXX_STATE(_self_link)); // point to self | |
1151 __ st_ptr(prev_state->after_save(), XXX_STATE(_prev_link)); // Chain interpreter states | |
1152 __ st_ptr(G2_thread, XXX_STATE(_thread)); // Store javathread | |
1153 | |
1154 if (native) { | |
1155 __ st_ptr(G0, XXX_STATE(_bcp)); | |
1156 } else { | |
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1157 __ ld_ptr(G5_method, in_bytes(Method::const_offset()), O2); // get ConstMethod* |
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1158 __ add(O2, in_bytes(ConstMethod::codes_offset()), O2); // get bcp |
0 | 1159 __ st_ptr(O2, XXX_STATE(_bcp)); |
1160 } | |
1161 | |
1162 __ st_ptr(G0, XXX_STATE(_mdx)); | |
1163 __ st_ptr(G5_method, XXX_STATE(_method)); | |
1164 | |
1165 __ set((int) BytecodeInterpreter::method_entry, O1); | |
1166 __ st(O1, XXX_STATE(_msg)); | |
1167 | |
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1168 __ ld_ptr(constMethod, O3); |
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1169 __ ld_ptr(O3, in_bytes(ConstMethod::constants_offset()), O3); |
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1170 __ ld_ptr(O3, ConstantPool::cache_offset_in_bytes(), O2); |
0 | 1171 __ st_ptr(O2, XXX_STATE(_constants)); |
1172 | |
1173 __ st_ptr(G0, XXX_STATE(_result._to_call._callee)); | |
1174 | |
1175 // Monitor base is just start of BytecodeInterpreter object; | |
1176 __ mov(state, O2); | |
1177 __ st_ptr(O2, XXX_STATE(_monitor_base)); | |
1178 | |
1179 // Do we need a monitor for synchonized method? | |
1180 { | |
1181 __ ld(access_flags, O1); | |
1182 Label done; | |
1183 Label got_obj; | |
1184 __ btst(JVM_ACC_SYNCHRONIZED, O1); | |
1185 __ br( Assembler::zero, false, Assembler::pt, done); | |
1186 | |
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1187 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
0 | 1188 __ delayed()->btst(JVM_ACC_STATIC, O1); |
1189 __ ld_ptr(XXX_STATE(_locals), O1); | |
1190 __ br( Assembler::zero, true, Assembler::pt, got_obj); | |
1191 __ delayed()->ld_ptr(O1, 0, O1); // get receiver for not-static case | |
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1192 __ ld_ptr(constMethod, O1); |
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1193 __ ld_ptr( O1, in_bytes(ConstMethod::constants_offset()), O1); |
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1194 __ ld_ptr( O1, ConstantPool::pool_holder_offset_in_bytes(), O1); |
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1195 // lock the mirror, not the Klass* |
0 | 1196 __ ld_ptr( O1, mirror_offset, O1); |
1197 | |
1198 __ bind(got_obj); | |
1199 | |
1200 #ifdef ASSERT | |
1201 __ tst(O1); | |
5923 | 1202 __ breakpoint_trap(Assembler::zero, Assembler::ptr_cc); |
0 | 1203 #endif // ASSERT |
1204 | |
1205 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
1206 __ sub(SP, entry_size, SP); // account for initial monitor | |
1207 __ sub(O2, entry_size, O2); // initial monitor | |
1208 __ st_ptr(O1, O2, BasicObjectLock::obj_offset_in_bytes()); // and allocate it for interpreter use | |
1209 __ bind(done); | |
1210 } | |
1211 | |
1212 // Remember initial frame bottom | |
1213 | |
1214 __ st_ptr(SP, XXX_STATE(_frame_bottom)); | |
1215 | |
1216 __ st_ptr(O2, XXX_STATE(_stack_base)); | |
1217 | |
1218 __ sub(O2, wordSize, O2); // prepush | |
1219 __ st_ptr(O2, XXX_STATE(_stack)); // PREPUSH | |
1220 | |
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1221 // Full size expression stack |
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1222 __ ld_ptr(constMethod, O3); |
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1223 __ lduh(O3, in_bytes(ConstMethod::max_stack_offset()), O3); |
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1224 __ inc(O3, Method::extra_stack_entries()); |
0 | 1225 __ sll(O3, LogBytesPerWord, O3); |
1226 __ sub(O2, O3, O3); | |
1227 // __ sub(O3, wordSize, O3); // so prepush doesn't look out of bounds | |
1228 __ st_ptr(O3, XXX_STATE(_stack_limit)); | |
1229 | |
1230 if (!native) { | |
1231 // | |
1232 // Code to initialize locals | |
1233 // | |
1234 Register init_value = noreg; // will be G0 if we must clear locals | |
1235 // Now zero locals | |
1236 if (true /* zerolocals */ || ClearInterpreterLocals) { | |
1237 // explicitly initialize locals | |
1238 init_value = G0; | |
1239 } else { | |
1240 #ifdef ASSERT | |
1241 // initialize locals to a garbage pattern for better debugging | |
1242 init_value = O3; | |
1243 __ set( 0x0F0F0F0F, init_value ); | |
1244 #endif // ASSERT | |
1245 } | |
1246 if (init_value != noreg) { | |
1247 Label clear_loop; | |
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1248 const Register RconstMethod = O1; |
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1249 const Address size_of_parameters(RconstMethod, 0, in_bytes(ConstMethod::size_of_parameters_offset())); |
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1250 const Address size_of_locals (RconstMethod, 0, in_bytes(ConstMethod::size_of_locals_offset())); |
0 | 1251 |
1252 // NOTE: If you change the frame layout, this code will need to | |
1253 // be updated! | |
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1254 __ ld_ptr( constMethod, RconstMethod ); |
0 | 1255 __ lduh( size_of_locals, O2 ); |
1256 __ lduh( size_of_parameters, O1 ); | |
1257 __ sll( O2, LogBytesPerWord, O2); | |
1258 __ sll( O1, LogBytesPerWord, O1 ); | |
1259 __ ld_ptr(XXX_STATE(_locals), L2_scratch); | |
1260 __ sub( L2_scratch, O2, O2 ); | |
1261 __ sub( L2_scratch, O1, O1 ); | |
1262 | |
1263 __ bind( clear_loop ); | |
1264 __ inc( O2, wordSize ); | |
1265 | |
1266 __ cmp( O2, O1 ); | |
1267 __ br( Assembler::lessEqualUnsigned, true, Assembler::pt, clear_loop ); | |
1268 __ delayed()->st_ptr( init_value, O2, 0 ); | |
1269 } | |
1270 } | |
1271 } | |
1272 // Find preallocated monitor and lock method (C++ interpreter) | |
1273 // | |
1274 void InterpreterGenerator::lock_method(void) { | |
1275 // Lock the current method. | |
1276 // Destroys registers L2_scratch, L3_scratch, O0 | |
1277 // | |
1278 // Find everything relative to Lstate | |
1279 | |
1280 #ifdef ASSERT | |
1281 __ ld_ptr(STATE(_method), L2_scratch); | |
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1282 __ ld(L2_scratch, in_bytes(Method::access_flags_offset()), O0); |
0 | 1283 |
1284 { Label ok; | |
1285 __ btst(JVM_ACC_SYNCHRONIZED, O0); | |
1286 __ br( Assembler::notZero, false, Assembler::pt, ok); | |
1287 __ delayed()->nop(); | |
1288 __ stop("method doesn't need synchronization"); | |
1289 __ bind(ok); | |
1290 } | |
1291 #endif // ASSERT | |
1292 | |
1293 // monitor is already allocated at stack base | |
1294 // and the lockee is already present | |
1295 __ ld_ptr(STATE(_stack_base), L2_scratch); | |
1296 __ ld_ptr(L2_scratch, BasicObjectLock::obj_offset_in_bytes(), O0); // get object | |
1297 __ lock_object(L2_scratch, O0); | |
1298 | |
1299 } | |
1300 | |
1301 // Generate code for handling resuming a deopted method | |
1302 void CppInterpreterGenerator::generate_deopt_handling() { | |
1303 | |
1304 Label return_from_deopt_common; | |
1305 | |
1306 // deopt needs to jump to here to enter the interpreter (return a result) | |
1307 deopt_frame_manager_return_atos = __ pc(); | |
1308 | |
1309 // O0/O1 live | |
3839 | 1310 __ ba(return_from_deopt_common); |
0 | 1311 __ delayed()->set(AbstractInterpreter::BasicType_as_index(T_OBJECT), L3_scratch); // Result stub address array index |
1312 | |
1313 | |
1314 // deopt needs to jump to here to enter the interpreter (return a result) | |
1315 deopt_frame_manager_return_btos = __ pc(); | |
1316 | |
1317 // O0/O1 live | |
3839 | 1318 __ ba(return_from_deopt_common); |
0 | 1319 __ delayed()->set(AbstractInterpreter::BasicType_as_index(T_BOOLEAN), L3_scratch); // Result stub address array index |
1320 | |
1321 // deopt needs to jump to here to enter the interpreter (return a result) | |
1322 deopt_frame_manager_return_itos = __ pc(); | |
1323 | |
1324 // O0/O1 live | |
3839 | 1325 __ ba(return_from_deopt_common); |
0 | 1326 __ delayed()->set(AbstractInterpreter::BasicType_as_index(T_INT), L3_scratch); // Result stub address array index |
1327 | |
1328 // deopt needs to jump to here to enter the interpreter (return a result) | |
1329 | |
1330 deopt_frame_manager_return_ltos = __ pc(); | |
1331 #if !defined(_LP64) && defined(COMPILER2) | |
1332 // All return values are where we want them, except for Longs. C2 returns | |
1333 // longs in G1 in the 32-bit build whereas the interpreter wants them in O0/O1. | |
1334 // Since the interpreter will return longs in G1 and O0/O1 in the 32bit | |
1335 // build even if we are returning from interpreted we just do a little | |
1336 // stupid shuffing. | |
1337 // Note: I tried to make c2 return longs in O0/O1 and G1 so we wouldn't have to | |
1338 // do this here. Unfortunately if we did a rethrow we'd see an machepilog node | |
1339 // first which would move g1 -> O0/O1 and destroy the exception we were throwing. | |
1340 | |
1341 __ srl (G1, 0,O1); | |
1342 __ srlx(G1,32,O0); | |
1343 #endif /* !_LP64 && COMPILER2 */ | |
1344 // O0/O1 live | |
3839 | 1345 __ ba(return_from_deopt_common); |
0 | 1346 __ delayed()->set(AbstractInterpreter::BasicType_as_index(T_LONG), L3_scratch); // Result stub address array index |
1347 | |
1348 // deopt needs to jump to here to enter the interpreter (return a result) | |
1349 | |
1350 deopt_frame_manager_return_ftos = __ pc(); | |
1351 // O0/O1 live | |
3839 | 1352 __ ba(return_from_deopt_common); |
0 | 1353 __ delayed()->set(AbstractInterpreter::BasicType_as_index(T_FLOAT), L3_scratch); // Result stub address array index |
1354 | |
1355 // deopt needs to jump to here to enter the interpreter (return a result) | |
1356 deopt_frame_manager_return_dtos = __ pc(); | |
1357 | |
1358 // O0/O1 live | |
3839 | 1359 __ ba(return_from_deopt_common); |
0 | 1360 __ delayed()->set(AbstractInterpreter::BasicType_as_index(T_DOUBLE), L3_scratch); // Result stub address array index |
1361 | |
1362 // deopt needs to jump to here to enter the interpreter (return a result) | |
1363 deopt_frame_manager_return_vtos = __ pc(); | |
1364 | |
1365 // O0/O1 live | |
1366 __ set(AbstractInterpreter::BasicType_as_index(T_VOID), L3_scratch); | |
1367 | |
1368 // Deopt return common | |
1369 // an index is present that lets us move any possible result being | |
1370 // return to the interpreter's stack | |
1371 // | |
1372 __ bind(return_from_deopt_common); | |
1373 | |
1374 // Result if any is in native abi result (O0..O1/F0..F1). The java expression | |
1375 // stack is in the state that the calling convention left it. | |
1376 // Copy the result from native abi result and place it on java expression stack. | |
1377 | |
1378 // Current interpreter state is present in Lstate | |
1379 | |
1380 // Get current pre-pushed top of interpreter stack | |
1381 // Any result (if any) is in native abi | |
1382 // result type index is in L3_scratch | |
1383 | |
1384 __ ld_ptr(STATE(_stack), L1_scratch); // get top of java expr stack | |
1385 | |
1386 __ set((intptr_t)CppInterpreter::_tosca_to_stack, L4_scratch); | |
1387 __ sll(L3_scratch, LogBytesPerWord, L3_scratch); | |
1388 __ ld_ptr(L4_scratch, L3_scratch, Lscratch); // get typed result converter address | |
1389 __ jmpl(Lscratch, G0, O7); // and convert it | |
1390 __ delayed()->nop(); | |
1391 | |
1392 // L1_scratch points to top of stack (prepushed) | |
1393 __ st_ptr(L1_scratch, STATE(_stack)); | |
1394 } | |
1395 | |
1396 // Generate the code to handle a more_monitors message from the c++ interpreter | |
1397 void CppInterpreterGenerator::generate_more_monitors() { | |
1398 | |
1399 Label entry, loop; | |
1400 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
1401 // 1. compute new pointers // esp: old expression stack top | |
1402 __ delayed()->ld_ptr(STATE(_stack_base), L4_scratch); // current expression stack bottom | |
1403 __ sub(L4_scratch, entry_size, L4_scratch); | |
1404 __ st_ptr(L4_scratch, STATE(_stack_base)); | |
1405 | |
1406 __ sub(SP, entry_size, SP); // Grow stack | |
1407 __ st_ptr(SP, STATE(_frame_bottom)); | |
1408 | |
1409 __ ld_ptr(STATE(_stack_limit), L2_scratch); | |
1410 __ sub(L2_scratch, entry_size, L2_scratch); | |
1411 __ st_ptr(L2_scratch, STATE(_stack_limit)); | |
1412 | |
1413 __ ld_ptr(STATE(_stack), L1_scratch); // Get current stack top | |
1414 __ sub(L1_scratch, entry_size, L1_scratch); | |
1415 __ st_ptr(L1_scratch, STATE(_stack)); | |
3839 | 1416 __ ba(entry); |
0 | 1417 __ delayed()->add(L1_scratch, wordSize, L1_scratch); // first real entry (undo prepush) |
1418 | |
1419 // 2. move expression stack | |
1420 | |
1421 __ bind(loop); | |
1422 __ st_ptr(L3_scratch, Address(L1_scratch, 0)); | |
1423 __ add(L1_scratch, wordSize, L1_scratch); | |
1424 __ bind(entry); | |
1425 __ cmp(L1_scratch, L4_scratch); | |
1426 __ br(Assembler::notEqual, false, Assembler::pt, loop); | |
1427 __ delayed()->ld_ptr(L1_scratch, entry_size, L3_scratch); | |
1428 | |
1429 // now zero the slot so we can find it. | |
123 | 1430 __ st_ptr(G0, L4_scratch, BasicObjectLock::obj_offset_in_bytes()); |
0 | 1431 |
1432 } | |
1433 | |
1434 // Initial entry to C++ interpreter from the call_stub. | |
1435 // This entry point is called the frame manager since it handles the generation | |
1436 // of interpreter activation frames via requests directly from the vm (via call_stub) | |
1437 // and via requests from the interpreter. The requests from the call_stub happen | |
1438 // directly thru the entry point. Requests from the interpreter happen via returning | |
1439 // from the interpreter and examining the message the interpreter has returned to | |
1440 // the frame manager. The frame manager can take the following requests: | |
1441 | |
1442 // NO_REQUEST - error, should never happen. | |
1443 // MORE_MONITORS - need a new monitor. Shuffle the expression stack on down and | |
1444 // allocate a new monitor. | |
1445 // CALL_METHOD - setup a new activation to call a new method. Very similar to what | |
1446 // happens during entry during the entry via the call stub. | |
1447 // RETURN_FROM_METHOD - remove an activation. Return to interpreter or call stub. | |
1448 // | |
1449 // Arguments: | |
1450 // | |
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1451 // ebx: Method* |
0 | 1452 // ecx: receiver - unused (retrieved from stack as needed) |
1453 // esi: previous frame manager state (NULL from the call_stub/c1/c2) | |
1454 // | |
1455 // | |
1456 // Stack layout at entry | |
1457 // | |
1458 // [ return address ] <--- esp | |
1459 // [ parameter n ] | |
1460 // ... | |
1461 // [ parameter 1 ] | |
1462 // [ expression stack ] | |
1463 // | |
1464 // | |
1465 // We are free to blow any registers we like because the call_stub which brought us here | |
1466 // initially has preserved the callee save registers already. | |
1467 // | |
1468 // | |
1469 | |
1470 static address interpreter_frame_manager = NULL; | |
1471 | |
1472 #ifdef ASSERT | |
1473 #define VALIDATE_STATE(scratch, marker) \ | |
1474 { \ | |
1475 Label skip; \ | |
1476 __ ld_ptr(STATE(_self_link), scratch); \ | |
1477 __ cmp(Lstate, scratch); \ | |
1478 __ brx(Assembler::equal, false, Assembler::pt, skip); \ | |
1479 __ delayed()->nop(); \ | |
1480 __ breakpoint_trap(); \ | |
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1481 __ emit_int32(marker); \ |
0 | 1482 __ bind(skip); \ |
1483 } | |
1484 #else | |
1485 #define VALIDATE_STATE(scratch, marker) | |
1486 #endif /* ASSERT */ | |
1487 | |
1488 void CppInterpreterGenerator::adjust_callers_stack(Register args) { | |
1489 // | |
1490 // Adjust caller's stack so that all the locals can be contiguous with | |
1491 // the parameters. | |
1492 // Worries about stack overflow make this a pain. | |
1493 // | |
1494 // Destroys args, G3_scratch, G3_scratch | |
1495 // In/Out O5_savedSP (sender's original SP) | |
1496 // | |
1497 // assert_different_registers(state, prev_state); | |
1498 const Register Gtmp = G3_scratch; | |
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1499 const RconstMethod = G3_scratch; |
0 | 1500 const Register tmp = O2; |
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1501 const Address constMethod(G5_method, 0, in_bytes(Method::const_offset())); |
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1502 const Address size_of_parameters(RconstMethod, 0, in_bytes(ConstMethod::size_of_parameters_offset())); |
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1503 const Address size_of_locals (RconstMethod, 0, in_bytes(ConstMethod::size_of_locals_offset())); |
0 | 1504 |
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1505 __ ld_ptr(constMethod, RconstMethod); |
0 | 1506 __ lduh(size_of_parameters, tmp); |
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1507 __ sll(tmp, LogBytesPerWord, Gargs); // parameter size in bytes |
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1508 __ add(args, Gargs, Gargs); // points to first local + BytesPerWord |
0 | 1509 // NEW |
1510 __ add(Gargs, -wordSize, Gargs); // points to first local[0] | |
1511 // determine extra space for non-argument locals & adjust caller's SP | |
1512 // Gtmp1: parameter size in words | |
1513 __ lduh(size_of_locals, Gtmp); | |
1514 __ compute_extra_locals_size_in_bytes(tmp, Gtmp, Gtmp); | |
1515 | |
1516 #if 1 | |
1517 // c2i adapters place the final interpreter argument in the register save area for O0/I0 | |
1518 // the call_stub will place the final interpreter argument at | |
1519 // frame::memory_parameter_word_sp_offset. This is mostly not noticable for either asm | |
1520 // or c++ interpreter. However with the c++ interpreter when we do a recursive call | |
1521 // and try to make it look good in the debugger we will store the argument to | |
1522 // RecursiveInterpreterActivation in the register argument save area. Without allocating | |
1523 // extra space for the compiler this will overwrite locals in the local array of the | |
1524 // interpreter. | |
1525 // QQQ still needed with frameless adapters??? | |
1526 | |
1527 const int c2i_adjust_words = frame::memory_parameter_word_sp_offset - frame::callee_register_argument_save_area_sp_offset; | |
1528 | |
1529 __ add(Gtmp, c2i_adjust_words*wordSize, Gtmp); | |
1530 #endif // 1 | |
1531 | |
1532 | |
1533 __ sub(SP, Gtmp, SP); // just caller's frame for the additional space we need. | |
1534 } | |
1535 | |
1536 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
1537 | |
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1538 // G5_method: Method* |
0 | 1539 // G2_thread: thread (unused) |
1540 // Gargs: bottom of args (sender_sp) | |
1541 // O5: sender's sp | |
1542 | |
1543 // A single frame manager is plenty as we don't specialize for synchronized. We could and | |
1544 // the code is pretty much ready. Would need to change the test below and for good measure | |
1545 // modify generate_interpreter_state to only do the (pre) sync stuff stuff for synchronized | |
1546 // routines. Not clear this is worth it yet. | |
1547 | |
1548 if (interpreter_frame_manager) { | |
1549 return interpreter_frame_manager; | |
1550 } | |
1551 | |
1552 __ bind(frame_manager_entry); | |
1553 | |
1554 // the following temporary registers are used during frame creation | |
1555 const Register Gtmp1 = G3_scratch; | |
1556 // const Register Lmirror = L1; // native mirror (native calls only) | |
1557 | |
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1558 const Address constMethod (G5_method, 0, in_bytes(Method::const_offset())); |
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1559 const Address access_flags (G5_method, 0, in_bytes(Method::access_flags_offset())); |
0 | 1560 |
1561 address entry_point = __ pc(); | |
1562 __ mov(G0, prevState); // no current activation | |
1563 | |
1564 | |
1565 Label re_dispatch; | |
1566 | |
1567 __ bind(re_dispatch); | |
1568 | |
1569 // Interpreter needs to have locals completely contiguous. In order to do that | |
1570 // We must adjust the caller's stack pointer for any locals beyond just the | |
1571 // parameters | |
1572 adjust_callers_stack(Gargs); | |
1573 | |
1574 // O5_savedSP still contains sender's sp | |
1575 | |
1576 // NEW FRAME | |
1577 | |
1578 generate_compute_interpreter_state(Lstate, prevState, false); | |
1579 | |
1580 // At this point a new interpreter frame and state object are created and initialized | |
1581 // Lstate has the pointer to the new activation | |
1582 // Any stack banging or limit check should already be done. | |
1583 | |
1584 Label call_interpreter; | |
1585 | |
1586 __ bind(call_interpreter); | |
1587 | |
1588 | |
1589 #if 1 | |
1590 __ set(0xdead002, Lmirror); | |
1591 __ set(0xdead002, L2_scratch); | |
1592 __ set(0xdead003, L3_scratch); | |
1593 __ set(0xdead004, L4_scratch); | |
1594 __ set(0xdead005, Lscratch); | |
1595 __ set(0xdead006, Lscratch2); | |
1596 __ set(0xdead007, L7_scratch); | |
1597 | |
1598 __ set(0xdeaf002, O2); | |
1599 __ set(0xdeaf003, O3); | |
1600 __ set(0xdeaf004, O4); | |
1601 __ set(0xdeaf005, O5); | |
1602 #endif | |
1603 | |
1604 // Call interpreter (stack bang complete) enter here if message is | |
1605 // set and we know stack size is valid | |
1606 | |
1607 Label call_interpreter_2; | |
1608 | |
1609 __ bind(call_interpreter_2); | |
1610 | |
1611 #ifdef ASSERT | |
1612 { | |
1613 Label skip; | |
1614 __ ld_ptr(STATE(_frame_bottom), G3_scratch); | |
1615 __ cmp(G3_scratch, SP); | |
1616 __ brx(Assembler::equal, false, Assembler::pt, skip); | |
1617 __ delayed()->nop(); | |
1618 __ stop("SP not restored to frame bottom"); | |
1619 __ bind(skip); | |
1620 } | |
1621 #endif | |
1622 | |
1623 VALIDATE_STATE(G3_scratch, 4); | |
1624 __ set_last_Java_frame(SP, noreg); | |
1625 __ mov(Lstate, O0); // (arg) pointer to current state | |
1626 | |
1627 __ call(CAST_FROM_FN_PTR(address, | |
1628 JvmtiExport::can_post_interpreter_events() ? | |
1629 BytecodeInterpreter::runWithChecks | |
1630 : BytecodeInterpreter::run), | |
1631 relocInfo::runtime_call_type); | |
1632 | |
1633 __ delayed()->nop(); | |
1634 | |
1635 __ ld_ptr(STATE(_thread), G2_thread); | |
1636 __ reset_last_Java_frame(); | |
1637 | |
1638 // examine msg from interpreter to determine next action | |
1639 __ ld_ptr(STATE(_thread), G2_thread); // restore G2_thread | |
1640 | |
1641 __ ld(STATE(_msg), L1_scratch); // Get new message | |
1642 | |
1643 Label call_method; | |
1644 Label return_from_interpreted_method; | |
1645 Label throw_exception; | |
1646 Label do_OSR; | |
1647 Label bad_msg; | |
1648 Label resume_interpreter; | |
1649 | |
1650 __ cmp(L1_scratch, (int)BytecodeInterpreter::call_method); | |
1651 __ br(Assembler::equal, false, Assembler::pt, call_method); | |
1652 __ delayed()->cmp(L1_scratch, (int)BytecodeInterpreter::return_from_method); | |
1653 __ br(Assembler::equal, false, Assembler::pt, return_from_interpreted_method); | |
1654 __ delayed()->cmp(L1_scratch, (int)BytecodeInterpreter::throwing_exception); | |
1655 __ br(Assembler::equal, false, Assembler::pt, throw_exception); | |
1656 __ delayed()->cmp(L1_scratch, (int)BytecodeInterpreter::do_osr); | |
1657 __ br(Assembler::equal, false, Assembler::pt, do_OSR); | |
1658 __ delayed()->cmp(L1_scratch, (int)BytecodeInterpreter::more_monitors); | |
1659 __ br(Assembler::notEqual, false, Assembler::pt, bad_msg); | |
1660 | |
1661 // Allocate more monitor space, shuffle expression stack.... | |
1662 | |
1663 generate_more_monitors(); | |
1664 | |
1665 // new monitor slot allocated, resume the interpreter. | |
1666 | |
1667 __ set((int)BytecodeInterpreter::got_monitors, L1_scratch); | |
1668 VALIDATE_STATE(G3_scratch, 5); | |
3839 | 1669 __ ba(call_interpreter); |
0 | 1670 __ delayed()->st(L1_scratch, STATE(_msg)); |
1671 | |
1672 // uncommon trap needs to jump to here to enter the interpreter (re-execute current bytecode) | |
1673 unctrap_frame_manager_entry = __ pc(); | |
1674 | |
1675 // QQQ what message do we send | |
1676 | |
3839 | 1677 __ ba(call_interpreter); |
0 | 1678 __ delayed()->ld_ptr(STATE(_frame_bottom), SP); // restore to full stack frame |
1679 | |
1680 //============================================================================= | |
1681 // Returning from a compiled method into a deopted method. The bytecode at the | |
1682 // bcp has completed. The result of the bytecode is in the native abi (the tosca | |
1683 // for the template based interpreter). Any stack space that was used by the | |
1684 // bytecode that has completed has been removed (e.g. parameters for an invoke) | |
1685 // so all that we have to do is place any pending result on the expression stack | |
1686 // and resume execution on the next bytecode. | |
1687 | |
1688 generate_deopt_handling(); | |
1689 | |
1690 // ready to resume the interpreter | |
1691 | |
1692 __ set((int)BytecodeInterpreter::deopt_resume, L1_scratch); | |
3839 | 1693 __ ba(call_interpreter); |
0 | 1694 __ delayed()->st(L1_scratch, STATE(_msg)); |
1695 | |
1696 // Current frame has caught an exception we need to dispatch to the | |
1697 // handler. We can get here because a native interpreter frame caught | |
1698 // an exception in which case there is no handler and we must rethrow | |
1699 // If it is a vanilla interpreted frame the we simply drop into the | |
1700 // interpreter and let it do the lookup. | |
1701 | |
1702 Interpreter::_rethrow_exception_entry = __ pc(); | |
1703 | |
1704 Label return_with_exception; | |
1705 Label unwind_and_forward; | |
1706 | |
1707 // O0: exception | |
1708 // O7: throwing pc | |
1709 | |
1710 // We want exception in the thread no matter what we ultimately decide about frame type. | |
1711 | |
1712 Address exception_addr (G2_thread, 0, in_bytes(Thread::pending_exception_offset())); | |
1713 __ verify_thread(); | |
1714 __ st_ptr(O0, exception_addr); | |
1715 | |
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1716 // get the Method* |
0 | 1717 __ ld_ptr(STATE(_method), G5_method); |
1718 | |
1719 // if this current frame vanilla or native? | |
1720 | |
1721 __ ld(access_flags, Gtmp1); | |
1722 __ btst(JVM_ACC_NATIVE, Gtmp1); | |
1723 __ br(Assembler::zero, false, Assembler::pt, return_with_exception); // vanilla interpreted frame handle directly | |
1724 __ delayed()->nop(); | |
1725 | |
1726 // We drop thru to unwind a native interpreted frame with a pending exception | |
1727 // We jump here for the initial interpreter frame with exception pending | |
1728 // We unwind the current acivation and forward it to our caller. | |
1729 | |
1730 __ bind(unwind_and_forward); | |
1731 | |
1732 // Unwind frame and jump to forward exception. unwinding will place throwing pc in O7 | |
1733 // as expected by forward_exception. | |
1734 | |
1735 __ restore(FP, G0, SP); // unwind interpreter state frame | |
1736 __ br(Assembler::always, false, Assembler::pt, StubRoutines::forward_exception_entry(), relocInfo::runtime_call_type); | |
1737 __ delayed()->mov(I5_savedSP->after_restore(), SP); | |
1738 | |
1739 // Return point from a call which returns a result in the native abi | |
1740 // (c1/c2/jni-native). This result must be processed onto the java | |
1741 // expression stack. | |
1742 // | |
1743 // A pending exception may be present in which case there is no result present | |
1744 | |
1745 address return_from_native_method = __ pc(); | |
1746 | |
1747 VALIDATE_STATE(G3_scratch, 6); | |
1748 | |
1749 // Result if any is in native abi result (O0..O1/F0..F1). The java expression | |
1750 // stack is in the state that the calling convention left it. | |
1751 // Copy the result from native abi result and place it on java expression stack. | |
1752 | |
1753 // Current interpreter state is present in Lstate | |
1754 | |
1755 // Exception pending? | |
1756 | |
1757 __ ld_ptr(STATE(_frame_bottom), SP); // restore to full stack frame | |
1758 __ ld_ptr(exception_addr, Lscratch); // get any pending exception | |
1759 __ tst(Lscratch); // exception pending? | |
1760 __ brx(Assembler::notZero, false, Assembler::pt, return_with_exception); | |
1761 __ delayed()->nop(); | |
1762 | |
1763 // Process the native abi result to java expression stack | |
1764 | |
1765 __ ld_ptr(STATE(_result._to_call._callee), L4_scratch); // called method | |
1766 __ ld_ptr(STATE(_stack), L1_scratch); // get top of java expr stack | |
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1767 // get parameter size |
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1768 __ ld_ptr(L4_scratch, in_bytes(Method::const_offset()), L2_scratch); |
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1769 __ lduh(L2_scratch, in_bytes(ConstMethod::size_of_parameters_offset()), L2_scratch); |
0 | 1770 __ sll(L2_scratch, LogBytesPerWord, L2_scratch ); // parameter size in bytes |
1771 __ add(L1_scratch, L2_scratch, L1_scratch); // stack destination for result | |
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1772 __ ld(L4_scratch, in_bytes(Method::result_index_offset()), L3_scratch); // called method result type index |
0 | 1773 |
1774 // tosca is really just native abi | |
1775 __ set((intptr_t)CppInterpreter::_tosca_to_stack, L4_scratch); | |
1776 __ sll(L3_scratch, LogBytesPerWord, L3_scratch); | |
1777 __ ld_ptr(L4_scratch, L3_scratch, Lscratch); // get typed result converter address | |
1778 __ jmpl(Lscratch, G0, O7); // and convert it | |
1779 __ delayed()->nop(); | |
1780 | |
1781 // L1_scratch points to top of stack (prepushed) | |
1782 | |
3839 | 1783 __ ba(resume_interpreter); |
0 | 1784 __ delayed()->mov(L1_scratch, O1); |
1785 | |
1786 // An exception is being caught on return to a vanilla interpreter frame. | |
1787 // Empty the stack and resume interpreter | |
1788 | |
1789 __ bind(return_with_exception); | |
1790 | |
1791 __ ld_ptr(STATE(_frame_bottom), SP); // restore to full stack frame | |
1792 __ ld_ptr(STATE(_stack_base), O1); // empty java expression stack | |
3839 | 1793 __ ba(resume_interpreter); |
0 | 1794 __ delayed()->sub(O1, wordSize, O1); // account for prepush |
1795 | |
1796 // Return from interpreted method we return result appropriate to the caller (i.e. "recursive" | |
1797 // interpreter call, or native) and unwind this interpreter activation. | |
1798 // All monitors should be unlocked. | |
1799 | |
1800 __ bind(return_from_interpreted_method); | |
1801 | |
1802 VALIDATE_STATE(G3_scratch, 7); | |
1803 | |
1804 Label return_to_initial_caller; | |
1805 | |
1806 // Interpreted result is on the top of the completed activation expression stack. | |
1807 // We must return it to the top of the callers stack if caller was interpreted | |
1808 // otherwise we convert to native abi result and return to call_stub/c1/c2 | |
1809 // The caller's expression stack was truncated by the call however the current activation | |
1810 // has enough stuff on the stack that we have usable space there no matter what. The | |
1811 // other thing that makes it easy is that the top of the caller's stack is stored in STATE(_locals) | |
1812 // for the current activation | |
1813 | |
1814 __ ld_ptr(STATE(_prev_link), L1_scratch); | |
1815 __ ld_ptr(STATE(_method), L2_scratch); // get method just executed | |
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1816 __ ld(L2_scratch, in_bytes(Method::result_index_offset()), L2_scratch); |
0 | 1817 __ tst(L1_scratch); |
1818 __ brx(Assembler::zero, false, Assembler::pt, return_to_initial_caller); | |
1819 __ delayed()->sll(L2_scratch, LogBytesPerWord, L2_scratch); | |
1820 | |
1821 // Copy result to callers java stack | |
1822 | |
1823 __ set((intptr_t)CppInterpreter::_stack_to_stack, L4_scratch); | |
1824 __ ld_ptr(L4_scratch, L2_scratch, Lscratch); // get typed result converter address | |
1825 __ ld_ptr(STATE(_stack), O0); // current top (prepushed) | |
1826 __ ld_ptr(STATE(_locals), O1); // stack destination | |
1827 | |
1828 // O0 - will be source, O1 - will be destination (preserved) | |
1829 __ jmpl(Lscratch, G0, O7); // and convert it | |
1830 __ delayed()->add(O0, wordSize, O0); // get source (top of current expr stack) | |
1831 | |
1832 // O1 == &locals[0] | |
1833 | |
1834 // Result is now on caller's stack. Just unwind current activation and resume | |
1835 | |
1836 Label unwind_recursive_activation; | |
1837 | |
1838 | |
1839 __ bind(unwind_recursive_activation); | |
1840 | |
1841 // O1 == &locals[0] (really callers stacktop) for activation now returning | |
1842 // returning to interpreter method from "recursive" interpreter call | |
1843 // result converter left O1 pointing to top of the( prepushed) java stack for method we are returning | |
1844 // to. Now all we must do is unwind the state from the completed call | |
1845 | |
1846 // Must restore stack | |
1847 VALIDATE_STATE(G3_scratch, 8); | |
1848 | |
1849 // Return to interpreter method after a method call (interpreted/native/c1/c2) has completed. | |
1850 // Result if any is already on the caller's stack. All we must do now is remove the now dead | |
1851 // frame and tell interpreter to resume. | |
1852 | |
1853 | |
1854 __ mov(O1, I1); // pass back new stack top across activation | |
1855 // POP FRAME HERE ================================== | |
1856 __ restore(FP, G0, SP); // unwind interpreter state frame | |
1857 __ ld_ptr(STATE(_frame_bottom), SP); // restore to full stack frame | |
1858 | |
1859 | |
1860 // Resume the interpreter. The current frame contains the current interpreter | |
1861 // state object. | |
1862 // | |
1863 // O1 == new java stack pointer | |
1864 | |
1865 __ bind(resume_interpreter); | |
1866 VALIDATE_STATE(G3_scratch, 10); | |
1867 | |
1868 // A frame we have already used before so no need to bang stack so use call_interpreter_2 entry | |
1869 | |
1870 __ set((int)BytecodeInterpreter::method_resume, L1_scratch); | |
1871 __ st(L1_scratch, STATE(_msg)); | |
3839 | 1872 __ ba(call_interpreter_2); |
0 | 1873 __ delayed()->st_ptr(O1, STATE(_stack)); |
1874 | |
1875 | |
1876 // Fast accessor methods share this entry point. | |
1877 // This works because frame manager is in the same codelet | |
1878 // This can either be an entry via call_stub/c1/c2 or a recursive interpreter call | |
1879 // we need to do a little register fixup here once we distinguish the two of them | |
1880 if (UseFastAccessorMethods && !synchronized) { | |
1881 // Call stub_return address still in O7 | |
1882 __ bind(fast_accessor_slow_entry_path); | |
1883 __ set((intptr_t)return_from_native_method - 8, Gtmp1); | |
1884 __ cmp(Gtmp1, O7); // returning to interpreter? | |
1885 __ brx(Assembler::equal, true, Assembler::pt, re_dispatch); // yep | |
1886 __ delayed()->nop(); | |
3839 | 1887 __ ba(re_dispatch); |
1888 __ delayed()->mov(G0, prevState); // initial entry | |
0 | 1889 |
1890 } | |
1891 | |
1892 // interpreter returning to native code (call_stub/c1/c2) | |
1893 // convert result and unwind initial activation | |
1894 // L2_scratch - scaled result type index | |
1895 | |
1896 __ bind(return_to_initial_caller); | |
1897 | |
1898 __ set((intptr_t)CppInterpreter::_stack_to_native_abi, L4_scratch); | |
1899 __ ld_ptr(L4_scratch, L2_scratch, Lscratch); // get typed result converter address | |
1900 __ ld_ptr(STATE(_stack), O0); // current top (prepushed) | |
1901 __ jmpl(Lscratch, G0, O7); // and convert it | |
1902 __ delayed()->add(O0, wordSize, O0); // get source (top of current expr stack) | |
1903 | |
1904 Label unwind_initial_activation; | |
1905 __ bind(unwind_initial_activation); | |
1906 | |
1907 // RETURN TO CALL_STUB/C1/C2 code (result if any in I0..I1/(F0/..F1) | |
1908 // we can return here with an exception that wasn't handled by interpreted code | |
1909 // how does c1/c2 see it on return? | |
1910 | |
1911 // compute resulting sp before/after args popped depending upon calling convention | |
1912 // __ ld_ptr(STATE(_saved_sp), Gtmp1); | |
1913 // | |
1914 // POP FRAME HERE ================================== | |
1915 __ restore(FP, G0, SP); | |
1916 __ retl(); | |
1917 __ delayed()->mov(I5_savedSP->after_restore(), SP); | |
1918 | |
1919 // OSR request, unwind the current frame and transfer to the OSR entry | |
1920 // and enter OSR nmethod | |
1921 | |
1922 __ bind(do_OSR); | |
1923 Label remove_initial_frame; | |
1924 __ ld_ptr(STATE(_prev_link), L1_scratch); | |
1925 __ ld_ptr(STATE(_result._osr._osr_buf), G1_scratch); | |
1926 | |
1927 // We are going to pop this frame. Is there another interpreter frame underneath | |
1928 // it or is it callstub/compiled? | |
1929 | |
1930 __ tst(L1_scratch); | |
1931 __ brx(Assembler::zero, false, Assembler::pt, remove_initial_frame); | |
1932 __ delayed()->ld_ptr(STATE(_result._osr._osr_entry), G3_scratch); | |
1933 | |
1934 // Frame underneath is an interpreter frame simply unwind | |
1935 // POP FRAME HERE ================================== | |
1936 __ restore(FP, G0, SP); // unwind interpreter state frame | |
1937 __ mov(I5_savedSP->after_restore(), SP); | |
1938 | |
1939 // Since we are now calling native need to change our "return address" from the | |
1940 // dummy RecursiveInterpreterActivation to a return from native | |
1941 | |
1942 __ set((intptr_t)return_from_native_method - 8, O7); | |
1943 | |
1944 __ jmpl(G3_scratch, G0, G0); | |
1945 __ delayed()->mov(G1_scratch, O0); | |
1946 | |
1947 __ bind(remove_initial_frame); | |
1948 | |
1949 // POP FRAME HERE ================================== | |
1950 __ restore(FP, G0, SP); | |
1951 __ mov(I5_savedSP->after_restore(), SP); | |
1952 __ jmpl(G3_scratch, G0, G0); | |
1953 __ delayed()->mov(G1_scratch, O0); | |
1954 | |
1955 // Call a new method. All we do is (temporarily) trim the expression stack | |
1956 // push a return address to bring us back to here and leap to the new entry. | |
1957 // At this point we have a topmost frame that was allocated by the frame manager | |
1958 // which contains the current method interpreted state. We trim this frame | |
1959 // of excess java expression stack entries and then recurse. | |
1960 | |
1961 __ bind(call_method); | |
1962 | |
1963 // stack points to next free location and not top element on expression stack | |
1964 // method expects sp to be pointing to topmost element | |
1965 | |
1966 __ ld_ptr(STATE(_thread), G2_thread); | |
1967 __ ld_ptr(STATE(_result._to_call._callee), G5_method); | |
1968 | |
1969 | |
1970 // SP already takes in to account the 2 extra words we use for slop | |
1971 // when we call a "static long no_params()" method. So if | |
1972 // we trim back sp by the amount of unused java expression stack | |
1973 // there will be automagically the 2 extra words we need. | |
1974 // We also have to worry about keeping SP aligned. | |
1975 | |
1976 __ ld_ptr(STATE(_stack), Gargs); | |
1977 __ ld_ptr(STATE(_stack_limit), L1_scratch); | |
1978 | |
1979 // compute the unused java stack size | |
1980 __ sub(Gargs, L1_scratch, L2_scratch); // compute unused space | |
1981 | |
123 | 1982 // Round down the unused space to that stack is always 16-byte aligned |
1983 // by making the unused space a multiple of the size of two longs. | |
0 | 1984 |
123 | 1985 __ and3(L2_scratch, -2*BytesPerLong, L2_scratch); |
0 | 1986 |
1987 // Now trim the stack | |
1988 __ add(SP, L2_scratch, SP); | |
1989 | |
1990 | |
1991 // Now point to the final argument (account for prepush) | |
1992 __ add(Gargs, wordSize, Gargs); | |
1993 #ifdef ASSERT | |
1994 // Make sure we have space for the window | |
1995 __ sub(Gargs, SP, L1_scratch); | |
1996 __ cmp(L1_scratch, 16*wordSize); | |
1997 { | |
1998 Label skip; | |
1999 __ brx(Assembler::greaterEqual, false, Assembler::pt, skip); | |
2000 __ delayed()->nop(); | |
2001 __ stop("killed stack"); | |
2002 __ bind(skip); | |
2003 } | |
2004 #endif // ASSERT | |
2005 | |
2006 // Create a new frame where we can store values that make it look like the interpreter | |
2007 // really recursed. | |
2008 | |
2009 // prepare to recurse or call specialized entry | |
2010 | |
2011 // First link the registers we need | |
2012 | |
2013 // make the pc look good in debugger | |
2014 __ set(CAST_FROM_FN_PTR(intptr_t, RecursiveInterpreterActivation), O7); | |
2015 // argument too | |
2016 __ mov(Lstate, I0); | |
2017 | |
2018 // Record our sending SP | |
2019 __ mov(SP, O5_savedSP); | |
2020 | |
2021 __ ld_ptr(STATE(_result._to_call._callee_entry_point), L2_scratch); | |
2022 __ set((intptr_t) entry_point, L1_scratch); | |
2023 __ cmp(L1_scratch, L2_scratch); | |
2024 __ brx(Assembler::equal, false, Assembler::pt, re_dispatch); | |
2025 __ delayed()->mov(Lstate, prevState); // link activations | |
2026 | |
2027 // method uses specialized entry, push a return so we look like call stub setup | |
2028 // this path will handle fact that result is returned in registers and not | |
2029 // on the java stack. | |
2030 | |
2031 __ set((intptr_t)return_from_native_method - 8, O7); | |
2032 __ jmpl(L2_scratch, G0, G0); // Do specialized entry | |
2033 __ delayed()->nop(); | |
2034 | |
2035 // | |
2036 // Bad Message from interpreter | |
2037 // | |
2038 __ bind(bad_msg); | |
2039 __ stop("Bad message from interpreter"); | |
2040 | |
2041 // Interpreted method "returned" with an exception pass it on... | |
2042 // Pass result, unwind activation and continue/return to interpreter/call_stub | |
2043 // We handle result (if any) differently based on return to interpreter or call_stub | |
2044 | |
2045 __ bind(throw_exception); | |
2046 __ ld_ptr(STATE(_prev_link), L1_scratch); | |
2047 __ tst(L1_scratch); | |
2048 __ brx(Assembler::zero, false, Assembler::pt, unwind_and_forward); | |
2049 __ delayed()->nop(); | |
2050 | |
3839 | 2051 __ ld_ptr(STATE(_locals), O1); // get result of popping callee's args |
2052 __ ba(unwind_recursive_activation); | |
0 | 2053 __ delayed()->nop(); |
2054 | |
2055 interpreter_frame_manager = entry_point; | |
2056 return entry_point; | |
2057 } | |
2058 | |
2059 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
2060 : CppInterpreterGenerator(code) { | |
2061 generate_all(); // down here so it can be "virtual" | |
2062 } | |
2063 | |
2064 | |
2065 static int size_activation_helper(int callee_extra_locals, int max_stack, int monitor_size) { | |
2066 | |
2067 // Figure out the size of an interpreter frame (in words) given that we have a fully allocated | |
2068 // expression stack, the callee will have callee_extra_locals (so we can account for | |
2069 // frame extension) and monitor_size for monitors. Basically we need to calculate | |
2070 // this exactly like generate_fixed_frame/generate_compute_interpreter_state. | |
2071 // | |
2072 // | |
2073 // The big complicating thing here is that we must ensure that the stack stays properly | |
2074 // aligned. This would be even uglier if monitor size wasn't modulo what the stack | |
2075 // needs to be aligned for). We are given that the sp (fp) is already aligned by | |
2076 // the caller so we must ensure that it is properly aligned for our callee. | |
2077 // | |
2078 // Ths c++ interpreter always makes sure that we have a enough extra space on the | |
2079 // stack at all times to deal with the "stack long no_params()" method issue. This | |
2080 // is "slop_factor" here. | |
2081 const int slop_factor = 2; | |
2082 | |
2083 const int fixed_size = sizeof(BytecodeInterpreter)/wordSize + // interpreter state object | |
2084 frame::memory_parameter_word_sp_offset; // register save area + param window | |
2085 return (round_to(max_stack + | |
2086 slop_factor + | |
2087 fixed_size + | |
2088 monitor_size + | |
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2089 (callee_extra_locals * Interpreter::stackElementWords), WordsPerLong)); |
0 | 2090 |
2091 } | |
2092 | |
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2093 int AbstractInterpreter::size_top_interpreter_activation(Method* method) { |
0 | 2094 |
2095 // See call_stub code | |
2096 int call_stub_size = round_to(7 + frame::memory_parameter_word_sp_offset, | |
2097 WordsPerLong); // 7 + register save area | |
2098 | |
2099 // Save space for one monitor to get into the interpreted method in case | |
2100 // the method is synchronized | |
2101 int monitor_size = method->is_synchronized() ? | |
2102 1*frame::interpreter_frame_monitor_size() : 0; | |
2103 return size_activation_helper(method->max_locals(), method->max_stack(), | |
2104 monitor_size) + call_stub_size; | |
2105 } | |
2106 | |
2107 void BytecodeInterpreter::layout_interpreterState(interpreterState to_fill, | |
2108 frame* caller, | |
2109 frame* current, | |
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2110 Method* method, |
0 | 2111 intptr_t* locals, |
2112 intptr_t* stack, | |
2113 intptr_t* stack_base, | |
2114 intptr_t* monitor_base, | |
2115 intptr_t* frame_bottom, | |
2116 bool is_top_frame | |
2117 ) | |
2118 { | |
2119 // What about any vtable? | |
2120 // | |
2121 to_fill->_thread = JavaThread::current(); | |
2122 // This gets filled in later but make it something recognizable for now | |
2123 to_fill->_bcp = method->code_base(); | |
2124 to_fill->_locals = locals; | |
2125 to_fill->_constants = method->constants()->cache(); | |
2126 to_fill->_method = method; | |
2127 to_fill->_mdx = NULL; | |
2128 to_fill->_stack = stack; | |
2129 if (is_top_frame && JavaThread::current()->popframe_forcing_deopt_reexecution() ) { | |
2130 to_fill->_msg = deopt_resume2; | |
2131 } else { | |
2132 to_fill->_msg = method_resume; | |
2133 } | |
2134 to_fill->_result._to_call._bcp_advance = 0; | |
2135 to_fill->_result._to_call._callee_entry_point = NULL; // doesn't matter to anyone | |
2136 to_fill->_result._to_call._callee = NULL; // doesn't matter to anyone | |
2137 to_fill->_prev_link = NULL; | |
2138 | |
2139 // Fill in the registers for the frame | |
2140 | |
2141 // Need to install _sender_sp. Actually not too hard in C++! | |
2142 // When the skeletal frames are layed out we fill in a value | |
2143 // for _sender_sp. That value is only correct for the oldest | |
2144 // skeletal frame constructed (because there is only a single | |
2145 // entry for "caller_adjustment". While the skeletal frames | |
2146 // exist that is good enough. We correct that calculation | |
2147 // here and get all the frames correct. | |
2148 | |
2149 // to_fill->_sender_sp = locals - (method->size_of_parameters() - 1); | |
2150 | |
2151 *current->register_addr(Lstate) = (intptr_t) to_fill; | |
2152 // skeletal already places a useful value here and this doesn't account | |
2153 // for alignment so don't bother. | |
2154 // *current->register_addr(I5_savedSP) = (intptr_t) locals - (method->size_of_parameters() - 1); | |
2155 | |
2156 if (caller->is_interpreted_frame()) { | |
2157 interpreterState prev = caller->get_interpreterState(); | |
2158 to_fill->_prev_link = prev; | |
2159 // Make the prev callee look proper | |
2160 prev->_result._to_call._callee = method; | |
2161 if (*prev->_bcp == Bytecodes::_invokeinterface) { | |
2162 prev->_result._to_call._bcp_advance = 5; | |
2163 } else { | |
2164 prev->_result._to_call._bcp_advance = 3; | |
2165 } | |
2166 } | |
2167 to_fill->_oop_temp = NULL; | |
2168 to_fill->_stack_base = stack_base; | |
2169 // Need +1 here because stack_base points to the word just above the first expr stack entry | |
2170 // and stack_limit is supposed to point to the word just below the last expr stack entry. | |
2171 // See generate_compute_interpreter_state. | |
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2172 to_fill->_stack_limit = stack_base - (method->max_stack() + 1); |
0 | 2173 to_fill->_monitor_base = (BasicObjectLock*) monitor_base; |
2174 | |
2175 // sparc specific | |
2176 to_fill->_frame_bottom = frame_bottom; | |
2177 to_fill->_self_link = to_fill; | |
2178 #ifdef ASSERT | |
2179 to_fill->_native_fresult = 123456.789; | |
2180 to_fill->_native_lresult = CONST64(0xdeadcafedeafcafe); | |
2181 #endif | |
2182 } | |
2183 | |
2184 void BytecodeInterpreter::pd_layout_interpreterState(interpreterState istate, address last_Java_pc, intptr_t* last_Java_fp) { | |
2185 istate->_last_Java_pc = (intptr_t*) last_Java_pc; | |
2186 } | |
2187 | |
2188 | |
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2189 int AbstractInterpreter::layout_activation(Method* method, |
0 | 2190 int tempcount, // Number of slots on java expression stack in use |
2191 int popframe_extra_args, | |
2192 int moncount, // Number of active monitors | |
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2193 int caller_actual_parameters, |
0 | 2194 int callee_param_size, |
2195 int callee_locals_size, | |
2196 frame* caller, | |
2197 frame* interpreter_frame, | |
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2198 bool is_top_frame, |
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2199 bool is_bottom_frame) { |
0 | 2200 |
2201 assert(popframe_extra_args == 0, "NEED TO FIX"); | |
2202 // NOTE this code must exactly mimic what InterpreterGenerator::generate_compute_interpreter_state() | |
2203 // does as far as allocating an interpreter frame. | |
2204 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
2205 // The frame interpreter_frame, if not NULL, is guaranteed to be the right size, | |
2206 // as determined by a previous call to this method. | |
2207 // It is also guaranteed to be walkable even though it is in a skeletal state | |
2208 // NOTE: return size is in words not bytes | |
2209 // NOTE: tempcount is the current size of the java expression stack. For top most | |
2210 // frames we will allocate a full sized expression stack and not the curback | |
2211 // version that non-top frames have. | |
2212 | |
2213 // Calculate the amount our frame will be adjust by the callee. For top frame | |
2214 // this is zero. | |
2215 | |
2216 // NOTE: ia64 seems to do this wrong (or at least backwards) in that it | |
2217 // calculates the extra locals based on itself. Not what the callee does | |
2218 // to it. So it ignores last_frame_adjust value. Seems suspicious as far | |
2219 // as getting sender_sp correct. | |
2220 | |
2221 int extra_locals_size = callee_locals_size - callee_param_size; | |
2222 int monitor_size = (sizeof(BasicObjectLock) * moncount) / wordSize; | |
2223 int full_frame_words = size_activation_helper(extra_locals_size, method->max_stack(), monitor_size); | |
2224 int short_frame_words = size_activation_helper(extra_locals_size, method->max_stack(), monitor_size); | |
2225 int frame_words = is_top_frame ? full_frame_words : short_frame_words; | |
2226 | |
2227 | |
2228 /* | |
2229 if we actually have a frame to layout we must now fill in all the pieces. This means both | |
2230 the interpreterState and the registers. | |
2231 */ | |
2232 if (interpreter_frame != NULL) { | |
2233 | |
2234 // MUCHO HACK | |
2235 | |
2236 intptr_t* frame_bottom = interpreter_frame->sp() - (full_frame_words - frame_words); | |
123 | 2237 // 'interpreter_frame->sp()' is unbiased while 'frame_bottom' must be a biased value in 64bit mode. |
2238 assert(((intptr_t)frame_bottom & 0xf) == 0, "SP biased in layout_activation"); | |
2239 frame_bottom = (intptr_t*)((intptr_t)frame_bottom - STACK_BIAS); | |
0 | 2240 |
2241 /* Now fillin the interpreterState object */ | |
2242 | |
2243 interpreterState cur_state = (interpreterState) ((intptr_t)interpreter_frame->fp() - sizeof(BytecodeInterpreter)); | |
2244 | |
2245 | |
2246 intptr_t* locals; | |
2247 | |
2248 // Calculate the postion of locals[0]. This is painful because of | |
2249 // stack alignment (same as ia64). The problem is that we can | |
2250 // not compute the location of locals from fp(). fp() will account | |
2251 // for the extra locals but it also accounts for aligning the stack | |
2252 // and we can't determine if the locals[0] was misaligned but max_locals | |
2253 // was enough to have the | |
2254 // calculate postion of locals. fp already accounts for extra locals. | |
2255 // +2 for the static long no_params() issue. | |
2256 | |
2257 if (caller->is_interpreted_frame()) { | |
2258 // locals must agree with the caller because it will be used to set the | |
2259 // caller's tos when we return. | |
2260 interpreterState prev = caller->get_interpreterState(); | |
2261 // stack() is prepushed. | |
2262 locals = prev->stack() + method->size_of_parameters(); | |
2263 } else { | |
2264 // Lay out locals block in the caller adjacent to the register window save area. | |
2265 // | |
2266 // Compiled frames do not allocate a varargs area which is why this if | |
2267 // statement is needed. | |
2268 // | |
2269 intptr_t* fp = interpreter_frame->fp(); | |
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2270 int local_words = method->max_locals() * Interpreter::stackElementWords; |
0 | 2271 |
2272 if (caller->is_compiled_frame()) { | |
2273 locals = fp + frame::register_save_words + local_words - 1; | |
2274 } else { | |
2275 locals = fp + frame::memory_parameter_word_sp_offset + local_words - 1; | |
2276 } | |
2277 | |
2278 } | |
2279 // END MUCHO HACK | |
2280 | |
2281 intptr_t* monitor_base = (intptr_t*) cur_state; | |
2282 intptr_t* stack_base = monitor_base - monitor_size; | |
2283 /* +1 because stack is always prepushed */ | |
2284 intptr_t* stack = stack_base - (tempcount + 1); | |
2285 | |
2286 | |
2287 BytecodeInterpreter::layout_interpreterState(cur_state, | |
2288 caller, | |
2289 interpreter_frame, | |
2290 method, | |
2291 locals, | |
2292 stack, | |
2293 stack_base, | |
2294 monitor_base, | |
2295 frame_bottom, | |
2296 is_top_frame); | |
2297 | |
2298 BytecodeInterpreter::pd_layout_interpreterState(cur_state, interpreter_return_address, interpreter_frame->fp()); | |
2299 | |
2300 } | |
2301 return frame_words; | |
2302 } | |
2303 | |
2304 #endif // CC_INTERP |