Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateInterpreter_x86_32.cpp @ 2093:7514897db238
7009849: C1: Incorrect frame size computation
Summary: Fix frame size computation
Reviewed-by: phh, kvn
author | iveresov |
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date | Thu, 30 Dec 2010 23:44:45 -0800 |
parents | f95d63e2154a |
children | dd031b2226de |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2010, 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/interpreter.hpp" | |
29 #include "interpreter/interpreterGenerator.hpp" | |
30 #include "interpreter/interpreterRuntime.hpp" | |
31 #include "interpreter/templateTable.hpp" | |
32 #include "oops/arrayOop.hpp" | |
33 #include "oops/methodDataOop.hpp" | |
34 #include "oops/methodOop.hpp" | |
35 #include "oops/oop.inline.hpp" | |
36 #include "prims/jvmtiExport.hpp" | |
37 #include "prims/jvmtiThreadState.hpp" | |
38 #include "runtime/arguments.hpp" | |
39 #include "runtime/deoptimization.hpp" | |
40 #include "runtime/frame.inline.hpp" | |
41 #include "runtime/sharedRuntime.hpp" | |
42 #include "runtime/stubRoutines.hpp" | |
43 #include "runtime/synchronizer.hpp" | |
44 #include "runtime/timer.hpp" | |
45 #include "runtime/vframeArray.hpp" | |
46 #include "utilities/debug.hpp" | |
0 | 47 |
48 #define __ _masm-> | |
49 | |
50 | |
51 #ifndef CC_INTERP | |
52 const int method_offset = frame::interpreter_frame_method_offset * wordSize; | |
53 const int bci_offset = frame::interpreter_frame_bcx_offset * wordSize; | |
54 const int locals_offset = frame::interpreter_frame_locals_offset * wordSize; | |
55 | |
56 //------------------------------------------------------------------------------------------------------------------------ | |
57 | |
58 address TemplateInterpreterGenerator::generate_StackOverflowError_handler() { | |
59 address entry = __ pc(); | |
60 | |
61 // Note: There should be a minimal interpreter frame set up when stack | |
62 // overflow occurs since we check explicitly for it now. | |
63 // | |
64 #ifdef ASSERT | |
65 { Label L; | |
304 | 66 __ lea(rax, Address(rbp, |
0 | 67 frame::interpreter_frame_monitor_block_top_offset * wordSize)); |
304 | 68 __ cmpptr(rax, rsp); // rax, = maximal rsp for current rbp, |
0 | 69 // (stack grows negative) |
70 __ jcc(Assembler::aboveEqual, L); // check if frame is complete | |
71 __ stop ("interpreter frame not set up"); | |
72 __ bind(L); | |
73 } | |
74 #endif // ASSERT | |
75 // Restore bcp under the assumption that the current frame is still | |
76 // interpreted | |
77 __ restore_bcp(); | |
78 | |
79 // expression stack must be empty before entering the VM if an exception | |
80 // happened | |
81 __ empty_expression_stack(); | |
82 __ empty_FPU_stack(); | |
83 // throw exception | |
84 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_StackOverflowError)); | |
85 return entry; | |
86 } | |
87 | |
88 address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(const char* name) { | |
89 address entry = __ pc(); | |
90 // expression stack must be empty before entering the VM if an exception happened | |
91 __ empty_expression_stack(); | |
92 __ empty_FPU_stack(); | |
93 // setup parameters | |
94 // ??? convention: expect aberrant index in register rbx, | |
95 __ lea(rax, ExternalAddress((address)name)); | |
96 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException), rax, rbx); | |
97 return entry; | |
98 } | |
99 | |
100 address TemplateInterpreterGenerator::generate_ClassCastException_handler() { | |
101 address entry = __ pc(); | |
102 // object is at TOS | |
304 | 103 __ pop(rax); |
0 | 104 // expression stack must be empty before entering the VM if an exception |
105 // happened | |
106 __ empty_expression_stack(); | |
107 __ empty_FPU_stack(); | |
108 __ call_VM(noreg, | |
109 CAST_FROM_FN_PTR(address, | |
110 InterpreterRuntime::throw_ClassCastException), | |
111 rax); | |
112 return entry; | |
113 } | |
114 | |
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115 // Arguments are: required type at TOS+4, failing object (or NULL) at TOS. |
710 | 116 address TemplateInterpreterGenerator::generate_WrongMethodType_handler() { |
117 address entry = __ pc(); | |
118 | |
119 __ pop(rbx); // actual failing object is at TOS | |
120 __ pop(rax); // required type is at TOS+4 | |
121 | |
122 __ verify_oop(rbx); | |
123 __ verify_oop(rax); | |
124 | |
125 // Various method handle types use interpreter registers as temps. | |
126 __ restore_bcp(); | |
127 __ restore_locals(); | |
128 | |
129 // Expression stack must be empty before entering the VM for an exception. | |
130 __ empty_expression_stack(); | |
131 __ empty_FPU_stack(); | |
132 __ call_VM(noreg, | |
133 CAST_FROM_FN_PTR(address, | |
134 InterpreterRuntime::throw_WrongMethodTypeException), | |
135 // pass required type, failing object (or NULL) | |
136 rax, rbx); | |
137 return entry; | |
138 } | |
139 | |
140 | |
0 | 141 address TemplateInterpreterGenerator::generate_exception_handler_common(const char* name, const char* message, bool pass_oop) { |
142 assert(!pass_oop || message == NULL, "either oop or message but not both"); | |
143 address entry = __ pc(); | |
144 if (pass_oop) { | |
145 // object is at TOS | |
304 | 146 __ pop(rbx); |
0 | 147 } |
148 // expression stack must be empty before entering the VM if an exception happened | |
149 __ empty_expression_stack(); | |
150 __ empty_FPU_stack(); | |
151 // setup parameters | |
152 __ lea(rax, ExternalAddress((address)name)); | |
153 if (pass_oop) { | |
154 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_klass_exception), rax, rbx); | |
155 } else { | |
156 if (message != NULL) { | |
157 __ lea(rbx, ExternalAddress((address)message)); | |
158 } else { | |
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159 __ movptr(rbx, NULL_WORD); |
0 | 160 } |
161 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), rax, rbx); | |
162 } | |
163 // throw exception | |
164 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
165 return entry; | |
166 } | |
167 | |
168 | |
169 address TemplateInterpreterGenerator::generate_continuation_for(TosState state) { | |
170 address entry = __ pc(); | |
171 // NULL last_sp until next java call | |
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172 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 173 __ dispatch_next(state); |
174 return entry; | |
175 } | |
176 | |
177 | |
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178 address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step) { |
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179 TosState incoming_state = state; |
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180 |
0 | 181 Label interpreter_entry; |
182 address compiled_entry = __ pc(); | |
183 | |
184 #ifdef COMPILER2 | |
185 // The FPU stack is clean if UseSSE >= 2 but must be cleaned in other cases | |
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186 if ((incoming_state == ftos && UseSSE < 1) || (incoming_state == dtos && UseSSE < 2)) { |
0 | 187 for (int i = 1; i < 8; i++) { |
188 __ ffree(i); | |
189 } | |
190 } else if (UseSSE < 2) { | |
191 __ empty_FPU_stack(); | |
192 } | |
193 #endif | |
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194 if ((incoming_state == ftos && UseSSE < 1) || (incoming_state == dtos && UseSSE < 2)) { |
0 | 195 __ MacroAssembler::verify_FPU(1, "generate_return_entry_for compiled"); |
196 } else { | |
197 __ MacroAssembler::verify_FPU(0, "generate_return_entry_for compiled"); | |
198 } | |
199 | |
200 __ jmp(interpreter_entry, relocInfo::none); | |
201 // emit a sentinel we can test for when converting an interpreter | |
202 // entry point to a compiled entry point. | |
203 __ a_long(Interpreter::return_sentinel); | |
204 __ a_long((int)compiled_entry); | |
205 address entry = __ pc(); | |
206 __ bind(interpreter_entry); | |
207 | |
208 // In SSE mode, interpreter returns FP results in xmm0 but they need | |
209 // to end up back on the FPU so it can operate on them. | |
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210 if (incoming_state == ftos && UseSSE >= 1) { |
304 | 211 __ subptr(rsp, wordSize); |
0 | 212 __ movflt(Address(rsp, 0), xmm0); |
213 __ fld_s(Address(rsp, 0)); | |
304 | 214 __ addptr(rsp, wordSize); |
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215 } else if (incoming_state == dtos && UseSSE >= 2) { |
304 | 216 __ subptr(rsp, 2*wordSize); |
0 | 217 __ movdbl(Address(rsp, 0), xmm0); |
218 __ fld_d(Address(rsp, 0)); | |
304 | 219 __ addptr(rsp, 2*wordSize); |
0 | 220 } |
221 | |
222 __ MacroAssembler::verify_FPU(state == ftos || state == dtos ? 1 : 0, "generate_return_entry_for in interpreter"); | |
223 | |
224 // Restore stack bottom in case i2c adjusted stack | |
304 | 225 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
0 | 226 // and NULL it as marker that rsp is now tos until next java call |
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227 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 228 |
229 __ restore_bcp(); | |
230 __ restore_locals(); | |
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231 |
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232 Label L_got_cache, L_giant_index; |
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233 if (EnableInvokeDynamic) { |
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234 __ cmpb(Address(rsi, 0), Bytecodes::_invokedynamic); |
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235 __ jcc(Assembler::equal, L_giant_index); |
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236 } |
1565 | 237 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u2)); |
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238 __ bind(L_got_cache); |
0 | 239 __ movl(rbx, Address(rbx, rcx, |
304 | 240 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + |
0 | 241 ConstantPoolCacheEntry::flags_offset())); |
304 | 242 __ andptr(rbx, 0xFF); |
243 __ lea(rsp, Address(rsp, rbx, Interpreter::stackElementScale())); | |
0 | 244 __ dispatch_next(state, step); |
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245 |
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246 // out of the main line of code... |
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247 if (EnableInvokeDynamic) { |
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248 __ bind(L_giant_index); |
1565 | 249 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u4)); |
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250 __ jmp(L_got_cache); |
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251 } |
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252 |
0 | 253 return entry; |
254 } | |
255 | |
256 | |
257 address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, int step) { | |
258 address entry = __ pc(); | |
259 | |
260 // In SSE mode, FP results are in xmm0 | |
261 if (state == ftos && UseSSE > 0) { | |
304 | 262 __ subptr(rsp, wordSize); |
0 | 263 __ movflt(Address(rsp, 0), xmm0); |
264 __ fld_s(Address(rsp, 0)); | |
304 | 265 __ addptr(rsp, wordSize); |
0 | 266 } else if (state == dtos && UseSSE >= 2) { |
304 | 267 __ subptr(rsp, 2*wordSize); |
0 | 268 __ movdbl(Address(rsp, 0), xmm0); |
269 __ fld_d(Address(rsp, 0)); | |
304 | 270 __ addptr(rsp, 2*wordSize); |
0 | 271 } |
272 | |
273 __ MacroAssembler::verify_FPU(state == ftos || state == dtos ? 1 : 0, "generate_deopt_entry_for in interpreter"); | |
274 | |
275 // The stack is not extended by deopt but we must NULL last_sp as this | |
276 // entry is like a "return". | |
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277 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 278 __ restore_bcp(); |
279 __ restore_locals(); | |
280 // handle exceptions | |
281 { Label L; | |
282 const Register thread = rcx; | |
283 __ get_thread(thread); | |
304 | 284 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
0 | 285 __ jcc(Assembler::zero, L); |
286 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); | |
287 __ should_not_reach_here(); | |
288 __ bind(L); | |
289 } | |
290 __ dispatch_next(state, step); | |
291 return entry; | |
292 } | |
293 | |
294 | |
295 int AbstractInterpreter::BasicType_as_index(BasicType type) { | |
296 int i = 0; | |
297 switch (type) { | |
298 case T_BOOLEAN: i = 0; break; | |
299 case T_CHAR : i = 1; break; | |
300 case T_BYTE : i = 2; break; | |
301 case T_SHORT : i = 3; break; | |
302 case T_INT : // fall through | |
303 case T_LONG : // fall through | |
304 case T_VOID : i = 4; break; | |
305 case T_FLOAT : i = 5; break; // have to treat float and double separately for SSE | |
306 case T_DOUBLE : i = 6; break; | |
307 case T_OBJECT : // fall through | |
308 case T_ARRAY : i = 7; break; | |
309 default : ShouldNotReachHere(); | |
310 } | |
311 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds"); | |
312 return i; | |
313 } | |
314 | |
315 | |
316 address TemplateInterpreterGenerator::generate_result_handler_for(BasicType type) { | |
317 address entry = __ pc(); | |
318 switch (type) { | |
319 case T_BOOLEAN: __ c2bool(rax); break; | |
304 | 320 case T_CHAR : __ andptr(rax, 0xFFFF); break; |
0 | 321 case T_BYTE : __ sign_extend_byte (rax); break; |
322 case T_SHORT : __ sign_extend_short(rax); break; | |
323 case T_INT : /* nothing to do */ break; | |
324 case T_DOUBLE : | |
325 case T_FLOAT : | |
326 { const Register t = InterpreterRuntime::SignatureHandlerGenerator::temp(); | |
304 | 327 __ pop(t); // remove return address first |
0 | 328 // Must return a result for interpreter or compiler. In SSE |
329 // mode, results are returned in xmm0 and the FPU stack must | |
330 // be empty. | |
331 if (type == T_FLOAT && UseSSE >= 1) { | |
332 // Load ST0 | |
333 __ fld_d(Address(rsp, 0)); | |
334 // Store as float and empty fpu stack | |
335 __ fstp_s(Address(rsp, 0)); | |
336 // and reload | |
337 __ movflt(xmm0, Address(rsp, 0)); | |
338 } else if (type == T_DOUBLE && UseSSE >= 2 ) { | |
339 __ movdbl(xmm0, Address(rsp, 0)); | |
340 } else { | |
341 // restore ST0 | |
342 __ fld_d(Address(rsp, 0)); | |
343 } | |
344 // and pop the temp | |
304 | 345 __ addptr(rsp, 2 * wordSize); |
346 __ push(t); // restore return address | |
0 | 347 } |
348 break; | |
349 case T_OBJECT : | |
350 // retrieve result from frame | |
304 | 351 __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); |
0 | 352 // and verify it |
353 __ verify_oop(rax); | |
354 break; | |
355 default : ShouldNotReachHere(); | |
356 } | |
357 __ ret(0); // return from result handler | |
358 return entry; | |
359 } | |
360 | |
361 address TemplateInterpreterGenerator::generate_safept_entry_for(TosState state, address runtime_entry) { | |
362 address entry = __ pc(); | |
363 __ push(state); | |
364 __ call_VM(noreg, runtime_entry); | |
365 __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); | |
366 return entry; | |
367 } | |
368 | |
369 | |
370 // Helpers for commoning out cases in the various type of method entries. | |
371 // | |
372 | |
373 // increment invocation count & check for overflow | |
374 // | |
375 // Note: checking for negative value instead of overflow | |
376 // so we have a 'sticky' overflow test | |
377 // | |
378 // rbx,: method | |
379 // rcx: invocation counter | |
380 // | |
381 void InterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) { | |
1783 | 382 const Address invocation_counter(rbx, in_bytes(methodOopDesc::invocation_counter_offset()) + |
383 in_bytes(InvocationCounter::counter_offset())); | |
384 // Note: In tiered we increment either counters in methodOop or in MDO depending if we're profiling or not. | |
385 if (TieredCompilation) { | |
386 int increment = InvocationCounter::count_increment; | |
387 int mask = ((1 << Tier0InvokeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
388 Label no_mdo, done; | |
389 if (ProfileInterpreter) { | |
390 // Are we profiling? | |
391 __ movptr(rax, Address(rbx, methodOopDesc::method_data_offset())); | |
392 __ testptr(rax, rax); | |
393 __ jccb(Assembler::zero, no_mdo); | |
394 // Increment counter in the MDO | |
395 const Address mdo_invocation_counter(rax, in_bytes(methodDataOopDesc::invocation_counter_offset()) + | |
396 in_bytes(InvocationCounter::counter_offset())); | |
397 __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rcx, false, Assembler::zero, overflow); | |
398 __ jmpb(done); | |
399 } | |
400 __ bind(no_mdo); | |
401 // Increment counter in methodOop (we don't need to load it, it's in rcx). | |
402 __ increment_mask_and_jump(invocation_counter, increment, mask, rcx, true, Assembler::zero, overflow); | |
403 __ bind(done); | |
404 } else { | |
405 const Address backedge_counter (rbx, methodOopDesc::backedge_counter_offset() + | |
406 InvocationCounter::counter_offset()); | |
0 | 407 |
1783 | 408 if (ProfileInterpreter) { // %%% Merge this into methodDataOop |
409 __ incrementl(Address(rbx,methodOopDesc::interpreter_invocation_counter_offset())); | |
410 } | |
411 // Update standard invocation counters | |
412 __ movl(rax, backedge_counter); // load backedge counter | |
413 | |
414 __ incrementl(rcx, InvocationCounter::count_increment); | |
415 __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits | |
416 | |
417 __ movl(invocation_counter, rcx); // save invocation count | |
418 __ addl(rcx, rax); // add both counters | |
0 | 419 |
1783 | 420 // profile_method is non-null only for interpreted method so |
421 // profile_method != NULL == !native_call | |
422 // BytecodeInterpreter only calls for native so code is elided. | |
423 | |
424 if (ProfileInterpreter && profile_method != NULL) { | |
425 // Test to see if we should create a method data oop | |
426 __ cmp32(rcx, | |
427 ExternalAddress((address)&InvocationCounter::InterpreterProfileLimit)); | |
428 __ jcc(Assembler::less, *profile_method_continue); | |
429 | |
430 // if no method data exists, go to profile_method | |
431 __ test_method_data_pointer(rax, *profile_method); | |
432 } | |
433 | |
0 | 434 __ cmp32(rcx, |
1783 | 435 ExternalAddress((address)&InvocationCounter::InterpreterInvocationLimit)); |
436 __ jcc(Assembler::aboveEqual, *overflow); | |
0 | 437 } |
438 } | |
439 | |
440 void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { | |
441 | |
442 // Asm interpreter on entry | |
443 // rdi - locals | |
444 // rsi - bcp | |
445 // rbx, - method | |
446 // rdx - cpool | |
447 // rbp, - interpreter frame | |
448 | |
449 // C++ interpreter on entry | |
450 // rsi - new interpreter state pointer | |
451 // rbp - interpreter frame pointer | |
452 // rbx - method | |
453 | |
454 // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] | |
455 // rbx, - method | |
456 // rcx - rcvr (assuming there is one) | |
457 // top of stack return address of interpreter caller | |
458 // rsp - sender_sp | |
459 | |
460 // C++ interpreter only | |
461 // rsi - previous interpreter state pointer | |
462 | |
463 const Address size_of_parameters(rbx, methodOopDesc::size_of_parameters_offset()); | |
464 | |
465 // InterpreterRuntime::frequency_counter_overflow takes one argument | |
466 // indicating if the counter overflow occurs at a backwards branch (non-NULL bcp). | |
467 // The call returns the address of the verified entry point for the method or NULL | |
468 // if the compilation did not complete (either went background or bailed out). | |
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469 __ movptr(rax, (intptr_t)false); |
0 | 470 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rax); |
471 | |
304 | 472 __ movptr(rbx, Address(rbp, method_offset)); // restore methodOop |
0 | 473 |
474 // Preserve invariant that rsi/rdi contain bcp/locals of sender frame | |
475 // and jump to the interpreted entry. | |
476 __ jmp(*do_continue, relocInfo::none); | |
477 | |
478 } | |
479 | |
480 void InterpreterGenerator::generate_stack_overflow_check(void) { | |
481 // see if we've got enough room on the stack for locals plus overhead. | |
482 // the expression stack grows down incrementally, so the normal guard | |
483 // page mechanism will work for that. | |
484 // | |
485 // Registers live on entry: | |
486 // | |
487 // Asm interpreter | |
488 // rdx: number of additional locals this frame needs (what we must check) | |
489 // rbx,: methodOop | |
490 | |
491 // destroyed on exit | |
492 // rax, | |
493 | |
494 // NOTE: since the additional locals are also always pushed (wasn't obvious in | |
495 // generate_method_entry) so the guard should work for them too. | |
496 // | |
497 | |
498 // monitor entry size: see picture of stack set (generate_method_entry) and frame_x86.hpp | |
499 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
500 | |
501 // total overhead size: entry_size + (saved rbp, thru expr stack bottom). | |
502 // be sure to change this if you add/subtract anything to/from the overhead area | |
503 const int overhead_size = -(frame::interpreter_frame_initial_sp_offset*wordSize) + entry_size; | |
504 | |
505 const int page_size = os::vm_page_size(); | |
506 | |
507 Label after_frame_check; | |
508 | |
509 // see if the frame is greater than one page in size. If so, | |
510 // then we need to verify there is enough stack space remaining | |
511 // for the additional locals. | |
1506 | 512 __ cmpl(rdx, (page_size - overhead_size)/Interpreter::stackElementSize); |
0 | 513 __ jcc(Assembler::belowEqual, after_frame_check); |
514 | |
515 // compute rsp as if this were going to be the last frame on | |
516 // the stack before the red zone | |
517 | |
518 Label after_frame_check_pop; | |
519 | |
304 | 520 __ push(rsi); |
0 | 521 |
522 const Register thread = rsi; | |
523 | |
524 __ get_thread(thread); | |
525 | |
526 const Address stack_base(thread, Thread::stack_base_offset()); | |
527 const Address stack_size(thread, Thread::stack_size_offset()); | |
528 | |
529 // locals + overhead, in bytes | |
304 | 530 __ lea(rax, Address(noreg, rdx, Interpreter::stackElementScale(), overhead_size)); |
0 | 531 |
532 #ifdef ASSERT | |
533 Label stack_base_okay, stack_size_okay; | |
534 // verify that thread stack base is non-zero | |
304 | 535 __ cmpptr(stack_base, (int32_t)NULL_WORD); |
0 | 536 __ jcc(Assembler::notEqual, stack_base_okay); |
537 __ stop("stack base is zero"); | |
538 __ bind(stack_base_okay); | |
539 // verify that thread stack size is non-zero | |
304 | 540 __ cmpptr(stack_size, 0); |
0 | 541 __ jcc(Assembler::notEqual, stack_size_okay); |
542 __ stop("stack size is zero"); | |
543 __ bind(stack_size_okay); | |
544 #endif | |
545 | |
546 // Add stack base to locals and subtract stack size | |
304 | 547 __ addptr(rax, stack_base); |
548 __ subptr(rax, stack_size); | |
0 | 549 |
550 // Use the maximum number of pages we might bang. | |
551 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : | |
552 (StackRedPages+StackYellowPages); | |
304 | 553 __ addptr(rax, max_pages * page_size); |
0 | 554 |
555 // check against the current stack bottom | |
304 | 556 __ cmpptr(rsp, rax); |
0 | 557 __ jcc(Assembler::above, after_frame_check_pop); |
558 | |
304 | 559 __ pop(rsi); // get saved bcp / (c++ prev state ). |
0 | 560 |
304 | 561 __ pop(rax); // get return address |
0 | 562 __ jump(ExternalAddress(Interpreter::throw_StackOverflowError_entry())); |
563 | |
564 // all done with frame size check | |
565 __ bind(after_frame_check_pop); | |
304 | 566 __ pop(rsi); |
0 | 567 |
568 __ bind(after_frame_check); | |
569 } | |
570 | |
571 // Allocate monitor and lock method (asm interpreter) | |
572 // rbx, - methodOop | |
573 // | |
574 void InterpreterGenerator::lock_method(void) { | |
575 // synchronize method | |
576 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
577 const Address monitor_block_top (rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
578 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
579 | |
580 #ifdef ASSERT | |
581 { Label L; | |
582 __ movl(rax, access_flags); | |
583 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
584 __ jcc(Assembler::notZero, L); | |
585 __ stop("method doesn't need synchronization"); | |
586 __ bind(L); | |
587 } | |
588 #endif // ASSERT | |
589 // get synchronization object | |
590 { Label done; | |
591 const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); | |
592 __ movl(rax, access_flags); | |
593 __ testl(rax, JVM_ACC_STATIC); | |
304 | 594 __ movptr(rax, Address(rdi, Interpreter::local_offset_in_bytes(0))); // get receiver (assume this is frequent case) |
0 | 595 __ jcc(Assembler::zero, done); |
304 | 596 __ movptr(rax, Address(rbx, methodOopDesc::constants_offset())); |
597 __ movptr(rax, Address(rax, constantPoolOopDesc::pool_holder_offset_in_bytes())); | |
598 __ movptr(rax, Address(rax, mirror_offset)); | |
0 | 599 __ bind(done); |
600 } | |
601 // add space for monitor & lock | |
304 | 602 __ subptr(rsp, entry_size); // add space for a monitor entry |
603 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
604 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); // store object | |
605 __ mov(rdx, rsp); // object address | |
0 | 606 __ lock_object(rdx); |
607 } | |
608 | |
609 // | |
610 // Generate a fixed interpreter frame. This is identical setup for interpreted methods | |
611 // and for native methods hence the shared code. | |
612 | |
613 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
614 // initialize fixed part of activation frame | |
304 | 615 __ push(rax); // save return address |
0 | 616 __ enter(); // save old & set new rbp, |
617 | |
618 | |
304 | 619 __ push(rsi); // set sender sp |
620 __ push((int32_t)NULL_WORD); // leave last_sp as null | |
621 __ movptr(rsi, Address(rbx,methodOopDesc::const_offset())); // get constMethodOop | |
622 __ lea(rsi, Address(rsi,constMethodOopDesc::codes_offset())); // get codebase | |
623 __ push(rbx); // save methodOop | |
0 | 624 if (ProfileInterpreter) { |
625 Label method_data_continue; | |
304 | 626 __ movptr(rdx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
627 __ testptr(rdx, rdx); | |
0 | 628 __ jcc(Assembler::zero, method_data_continue); |
304 | 629 __ addptr(rdx, in_bytes(methodDataOopDesc::data_offset())); |
0 | 630 __ bind(method_data_continue); |
304 | 631 __ push(rdx); // set the mdp (method data pointer) |
0 | 632 } else { |
304 | 633 __ push(0); |
0 | 634 } |
635 | |
304 | 636 __ movptr(rdx, Address(rbx, methodOopDesc::constants_offset())); |
637 __ movptr(rdx, Address(rdx, constantPoolOopDesc::cache_offset_in_bytes())); | |
638 __ push(rdx); // set constant pool cache | |
639 __ push(rdi); // set locals pointer | |
0 | 640 if (native_call) { |
304 | 641 __ push(0); // no bcp |
0 | 642 } else { |
304 | 643 __ push(rsi); // set bcp |
0 | 644 } |
304 | 645 __ push(0); // reserve word for pointer to expression stack bottom |
646 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
0 | 647 } |
648 | |
649 // End of helpers | |
650 | |
651 // | |
652 // Various method entries | |
653 //------------------------------------------------------------------------------------------------------------------------ | |
654 // | |
655 // | |
656 | |
657 // Call an accessor method (assuming it is resolved, otherwise drop into vanilla (slow path) entry | |
658 | |
659 address InterpreterGenerator::generate_accessor_entry(void) { | |
660 | |
661 // rbx,: methodOop | |
662 // rcx: receiver (preserve for slow entry into asm interpreter) | |
663 | |
664 // rsi: senderSP must preserved for slow path, set SP to it on fast path | |
665 | |
666 address entry_point = __ pc(); | |
667 Label xreturn_path; | |
668 | |
669 // do fastpath for resolved accessor methods | |
670 if (UseFastAccessorMethods) { | |
671 Label slow_path; | |
672 // If we need a safepoint check, generate full interpreter entry. | |
673 ExternalAddress state(SafepointSynchronize::address_of_state()); | |
674 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
675 SafepointSynchronize::_not_synchronized); | |
676 | |
677 __ jcc(Assembler::notEqual, slow_path); | |
678 // ASM/C++ Interpreter | |
679 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites thereof; parameter size = 1 | |
680 // Note: We can only use this code if the getfield has been resolved | |
681 // and if we don't have a null-pointer exception => check for | |
682 // these conditions first and use slow path if necessary. | |
683 // rbx,: method | |
684 // rcx: receiver | |
304 | 685 __ movptr(rax, Address(rsp, wordSize)); |
0 | 686 |
687 // check if local 0 != NULL and read field | |
304 | 688 __ testptr(rax, rax); |
0 | 689 __ jcc(Assembler::zero, slow_path); |
690 | |
304 | 691 __ movptr(rdi, Address(rbx, methodOopDesc::constants_offset())); |
0 | 692 // read first instruction word and extract bytecode @ 1 and index @ 2 |
304 | 693 __ movptr(rdx, Address(rbx, methodOopDesc::const_offset())); |
0 | 694 __ movl(rdx, Address(rdx, constMethodOopDesc::codes_offset())); |
695 // Shift codes right to get the index on the right. | |
696 // The bytecode fetched looks like <index><0xb4><0x2a> | |
697 __ shrl(rdx, 2*BitsPerByte); | |
698 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
304 | 699 __ movptr(rdi, Address(rdi, constantPoolOopDesc::cache_offset_in_bytes())); |
0 | 700 |
701 // rax,: local 0 | |
702 // rbx,: method | |
703 // rcx: receiver - do not destroy since it is needed for slow path! | |
704 // rcx: scratch | |
705 // rdx: constant pool cache index | |
706 // rdi: constant pool cache | |
707 // rsi: sender sp | |
708 | |
709 // check if getfield has been resolved and read constant pool cache entry | |
710 // check the validity of the cache entry by testing whether _indices field | |
711 // contains Bytecode::_getfield in b1 byte. | |
712 assert(in_words(ConstantPoolCacheEntry::size()) == 4, "adjust shift below"); | |
713 __ movl(rcx, | |
714 Address(rdi, | |
715 rdx, | |
304 | 716 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::indices_offset())); |
0 | 717 __ shrl(rcx, 2*BitsPerByte); |
718 __ andl(rcx, 0xFF); | |
719 __ cmpl(rcx, Bytecodes::_getfield); | |
720 __ jcc(Assembler::notEqual, slow_path); | |
721 | |
722 // Note: constant pool entry is not valid before bytecode is resolved | |
304 | 723 __ movptr(rcx, |
724 Address(rdi, | |
725 rdx, | |
726 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f2_offset())); | |
0 | 727 __ movl(rdx, |
728 Address(rdi, | |
729 rdx, | |
304 | 730 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::flags_offset())); |
0 | 731 |
732 Label notByte, notShort, notChar; | |
733 const Address field_address (rax, rcx, Address::times_1); | |
734 | |
735 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
736 // because they are different sizes. | |
737 // Use the type from the constant pool cache | |
738 __ shrl(rdx, ConstantPoolCacheEntry::tosBits); | |
739 // Make sure we don't need to mask rdx for tosBits after the above shift | |
740 ConstantPoolCacheEntry::verify_tosBits(); | |
741 __ cmpl(rdx, btos); | |
742 __ jcc(Assembler::notEqual, notByte); | |
743 __ load_signed_byte(rax, field_address); | |
744 __ jmp(xreturn_path); | |
745 | |
746 __ bind(notByte); | |
747 __ cmpl(rdx, stos); | |
748 __ jcc(Assembler::notEqual, notShort); | |
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749 __ load_signed_short(rax, field_address); |
0 | 750 __ jmp(xreturn_path); |
751 | |
752 __ bind(notShort); | |
753 __ cmpl(rdx, ctos); | |
754 __ jcc(Assembler::notEqual, notChar); | |
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755 __ load_unsigned_short(rax, field_address); |
0 | 756 __ jmp(xreturn_path); |
757 | |
758 __ bind(notChar); | |
759 #ifdef ASSERT | |
760 Label okay; | |
761 __ cmpl(rdx, atos); | |
762 __ jcc(Assembler::equal, okay); | |
763 __ cmpl(rdx, itos); | |
764 __ jcc(Assembler::equal, okay); | |
765 __ stop("what type is this?"); | |
766 __ bind(okay); | |
767 #endif // ASSERT | |
768 // All the rest are a 32 bit wordsize | |
304 | 769 // This is ok for now. Since fast accessors should be going away |
770 __ movptr(rax, field_address); | |
0 | 771 |
772 __ bind(xreturn_path); | |
773 | |
774 // _ireturn/_areturn | |
304 | 775 __ pop(rdi); // get return address |
776 __ mov(rsp, rsi); // set sp to sender sp | |
0 | 777 __ jmp(rdi); |
778 | |
779 // generate a vanilla interpreter entry as the slow path | |
780 __ bind(slow_path); | |
781 | |
782 (void) generate_normal_entry(false); | |
783 return entry_point; | |
784 } | |
785 return NULL; | |
786 | |
787 } | |
788 | |
789 // | |
790 // Interpreter stub for calling a native method. (asm interpreter) | |
791 // This sets up a somewhat different looking stack for calling the native method | |
792 // than the typical interpreter frame setup. | |
793 // | |
794 | |
795 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
796 // determine code generation flags | |
797 bool inc_counter = UseCompiler || CountCompiledCalls; | |
798 | |
799 // rbx,: methodOop | |
800 // rsi: sender sp | |
801 // rsi: previous interpreter state (C++ interpreter) must preserve | |
802 address entry_point = __ pc(); | |
803 | |
804 | |
805 const Address size_of_parameters(rbx, methodOopDesc::size_of_parameters_offset()); | |
806 const Address invocation_counter(rbx, methodOopDesc::invocation_counter_offset() + InvocationCounter::counter_offset()); | |
807 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
808 | |
809 // get parameter size (always needed) | |
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810 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 811 |
812 // native calls don't need the stack size check since they have no expression stack | |
813 // and the arguments are already on the stack and we only add a handful of words | |
814 // to the stack | |
815 | |
816 // rbx,: methodOop | |
817 // rcx: size of parameters | |
818 // rsi: sender sp | |
819 | |
304 | 820 __ pop(rax); // get return address |
0 | 821 // for natives the size of locals is zero |
822 | |
823 // compute beginning of parameters (rdi) | |
304 | 824 __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); |
0 | 825 |
826 | |
827 // add 2 zero-initialized slots for native calls | |
828 // NULL result handler | |
304 | 829 __ push((int32_t)NULL_WORD); |
0 | 830 // NULL oop temp (mirror or jni oop result) |
304 | 831 __ push((int32_t)NULL_WORD); |
0 | 832 |
833 if (inc_counter) __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
834 // initialize fixed part of activation frame | |
835 | |
836 generate_fixed_frame(true); | |
837 | |
838 // make sure method is native & not abstract | |
839 #ifdef ASSERT | |
840 __ movl(rax, access_flags); | |
841 { | |
842 Label L; | |
843 __ testl(rax, JVM_ACC_NATIVE); | |
844 __ jcc(Assembler::notZero, L); | |
845 __ stop("tried to execute non-native method as native"); | |
846 __ bind(L); | |
847 } | |
848 { Label L; | |
849 __ testl(rax, JVM_ACC_ABSTRACT); | |
850 __ jcc(Assembler::zero, L); | |
851 __ stop("tried to execute abstract method in interpreter"); | |
852 __ bind(L); | |
853 } | |
854 #endif | |
855 | |
856 // Since at this point in the method invocation the exception handler | |
857 // would try to exit the monitor of synchronized methods which hasn't | |
858 // been entered yet, we set the thread local variable | |
859 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
860 // check this flag. | |
861 | |
862 __ get_thread(rax); | |
863 const Address do_not_unlock_if_synchronized(rax, | |
864 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
865 __ movbool(do_not_unlock_if_synchronized, true); | |
866 | |
867 // increment invocation count & check for overflow | |
868 Label invocation_counter_overflow; | |
869 if (inc_counter) { | |
870 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
871 } | |
872 | |
873 Label continue_after_compile; | |
874 __ bind(continue_after_compile); | |
875 | |
876 bang_stack_shadow_pages(true); | |
877 | |
878 // reset the _do_not_unlock_if_synchronized flag | |
879 __ get_thread(rax); | |
880 __ movbool(do_not_unlock_if_synchronized, false); | |
881 | |
882 // check for synchronized methods | |
883 // Must happen AFTER invocation_counter check and stack overflow check, | |
884 // so method is not locked if overflows. | |
885 // | |
886 if (synchronized) { | |
887 lock_method(); | |
888 } else { | |
889 // no synchronization necessary | |
890 #ifdef ASSERT | |
891 { Label L; | |
892 __ movl(rax, access_flags); | |
893 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
894 __ jcc(Assembler::zero, L); | |
895 __ stop("method needs synchronization"); | |
896 __ bind(L); | |
897 } | |
898 #endif | |
899 } | |
900 | |
901 // start execution | |
902 #ifdef ASSERT | |
903 { Label L; | |
904 const Address monitor_block_top (rbp, | |
905 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 906 __ movptr(rax, monitor_block_top); |
907 __ cmpptr(rax, rsp); | |
0 | 908 __ jcc(Assembler::equal, L); |
909 __ stop("broken stack frame setup in interpreter"); | |
910 __ bind(L); | |
911 } | |
912 #endif | |
913 | |
914 // jvmti/dtrace support | |
915 __ notify_method_entry(); | |
916 | |
917 // work registers | |
918 const Register method = rbx; | |
919 const Register thread = rdi; | |
920 const Register t = rcx; | |
921 | |
922 // allocate space for parameters | |
923 __ get_method(method); | |
924 __ verify_oop(method); | |
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925 __ load_unsigned_short(t, Address(method, methodOopDesc::size_of_parameters_offset())); |
1506 | 926 __ shlptr(t, Interpreter::logStackElementSize); |
304 | 927 __ addptr(t, 2*wordSize); // allocate two more slots for JNIEnv and possible mirror |
928 __ subptr(rsp, t); | |
929 __ andptr(rsp, -(StackAlignmentInBytes)); // gcc needs 16 byte aligned stacks to do XMM intrinsics | |
0 | 930 |
931 // get signature handler | |
932 { Label L; | |
304 | 933 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
934 __ testptr(t, t); | |
0 | 935 __ jcc(Assembler::notZero, L); |
936 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); | |
937 __ get_method(method); | |
304 | 938 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
0 | 939 __ bind(L); |
940 } | |
941 | |
942 // call signature handler | |
943 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == rdi, "adjust this code"); | |
944 assert(InterpreterRuntime::SignatureHandlerGenerator::to () == rsp, "adjust this code"); | |
945 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == t , "adjust this code"); | |
946 // The generated handlers do not touch RBX (the method oop). | |
947 // However, large signatures cannot be cached and are generated | |
948 // each time here. The slow-path generator will blow RBX | |
949 // sometime, so we must reload it after the call. | |
950 __ call(t); | |
951 __ get_method(method); // slow path call blows RBX on DevStudio 5.0 | |
952 | |
953 // result handler is in rax, | |
954 // set result handler | |
304 | 955 __ movptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), rax); |
0 | 956 |
957 // pass mirror handle if static call | |
958 { Label L; | |
959 const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); | |
960 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); | |
961 __ testl(t, JVM_ACC_STATIC); | |
962 __ jcc(Assembler::zero, L); | |
963 // get mirror | |
304 | 964 __ movptr(t, Address(method, methodOopDesc:: constants_offset())); |
965 __ movptr(t, Address(t, constantPoolOopDesc::pool_holder_offset_in_bytes())); | |
966 __ movptr(t, Address(t, mirror_offset)); | |
0 | 967 // copy mirror into activation frame |
304 | 968 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), t); |
0 | 969 // pass handle to mirror |
304 | 970 __ lea(t, Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); |
971 __ movptr(Address(rsp, wordSize), t); | |
0 | 972 __ bind(L); |
973 } | |
974 | |
975 // get native function entry point | |
976 { Label L; | |
304 | 977 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
0 | 978 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
304 | 979 __ cmpptr(rax, unsatisfied.addr()); |
0 | 980 __ jcc(Assembler::notEqual, L); |
981 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); | |
982 __ get_method(method); | |
983 __ verify_oop(method); | |
304 | 984 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
0 | 985 __ bind(L); |
986 } | |
987 | |
988 // pass JNIEnv | |
989 __ get_thread(thread); | |
304 | 990 __ lea(t, Address(thread, JavaThread::jni_environment_offset())); |
991 __ movptr(Address(rsp, 0), t); | |
0 | 992 |
993 // set_last_Java_frame_before_call | |
994 // It is enough that the pc() | |
995 // points into the right code segment. It does not have to be the correct return pc. | |
996 __ set_last_Java_frame(thread, noreg, rbp, __ pc()); | |
997 | |
998 // change thread state | |
999 #ifdef ASSERT | |
1000 { Label L; | |
1001 __ movl(t, Address(thread, JavaThread::thread_state_offset())); | |
1002 __ cmpl(t, _thread_in_Java); | |
1003 __ jcc(Assembler::equal, L); | |
1004 __ stop("Wrong thread state in native stub"); | |
1005 __ bind(L); | |
1006 } | |
1007 #endif | |
1008 | |
1009 // Change state to native | |
1010 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native); | |
1011 __ call(rax); | |
1012 | |
1013 // result potentially in rdx:rax or ST0 | |
1014 | |
1015 // Either restore the MXCSR register after returning from the JNI Call | |
1016 // or verify that it wasn't changed. | |
1017 if (VM_Version::supports_sse()) { | |
1018 if (RestoreMXCSROnJNICalls) { | |
1019 __ ldmxcsr(ExternalAddress(StubRoutines::addr_mxcsr_std())); | |
1020 } | |
1021 else if (CheckJNICalls ) { | |
304 | 1022 __ call(RuntimeAddress(StubRoutines::x86::verify_mxcsr_entry())); |
0 | 1023 } |
1024 } | |
1025 | |
1026 // Either restore the x87 floating pointer control word after returning | |
1027 // from the JNI call or verify that it wasn't changed. | |
1028 if (CheckJNICalls) { | |
304 | 1029 __ call(RuntimeAddress(StubRoutines::x86::verify_fpu_cntrl_wrd_entry())); |
0 | 1030 } |
1031 | |
1032 // save potential result in ST(0) & rdx:rax | |
1033 // (if result handler is the T_FLOAT or T_DOUBLE handler, result must be in ST0 - | |
1034 // the check is necessary to avoid potential Intel FPU overflow problems by saving/restoring 'empty' FPU registers) | |
1035 // It is safe to do this push because state is _thread_in_native and return address will be found | |
1036 // via _last_native_pc and not via _last_jave_sp | |
1037 | |
1038 // NOTE: the order of theses push(es) is known to frame::interpreter_frame_result. | |
1039 // If the order changes or anything else is added to the stack the code in | |
1040 // interpreter_frame_result will have to be changed. | |
1041 | |
1042 { Label L; | |
1043 Label push_double; | |
1044 ExternalAddress float_handler(AbstractInterpreter::result_handler(T_FLOAT)); | |
1045 ExternalAddress double_handler(AbstractInterpreter::result_handler(T_DOUBLE)); | |
1046 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), | |
1047 float_handler.addr()); | |
1048 __ jcc(Assembler::equal, push_double); | |
1049 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), | |
1050 double_handler.addr()); | |
1051 __ jcc(Assembler::notEqual, L); | |
1052 __ bind(push_double); | |
1053 __ push(dtos); | |
1054 __ bind(L); | |
1055 } | |
1056 __ push(ltos); | |
1057 | |
1058 // change thread state | |
1059 __ get_thread(thread); | |
1060 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native_trans); | |
1061 if(os::is_MP()) { | |
1062 if (UseMembar) { | |
304 | 1063 // Force this write out before the read below |
1064 __ membar(Assembler::Membar_mask_bits( | |
1065 Assembler::LoadLoad | Assembler::LoadStore | | |
1066 Assembler::StoreLoad | Assembler::StoreStore)); | |
0 | 1067 } else { |
1068 // Write serialization page so VM thread can do a pseudo remote membar. | |
1069 // We use the current thread pointer to calculate a thread specific | |
1070 // offset to write to within the page. This minimizes bus traffic | |
1071 // due to cache line collision. | |
1072 __ serialize_memory(thread, rcx); | |
1073 } | |
1074 } | |
1075 | |
1076 if (AlwaysRestoreFPU) { | |
1077 // Make sure the control word is correct. | |
1078 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); | |
1079 } | |
1080 | |
1081 // check for safepoint operation in progress and/or pending suspend requests | |
1082 { Label Continue; | |
1083 | |
1084 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
1085 SafepointSynchronize::_not_synchronized); | |
1086 | |
1087 Label L; | |
1088 __ jcc(Assembler::notEqual, L); | |
1089 __ cmpl(Address(thread, JavaThread::suspend_flags_offset()), 0); | |
1090 __ jcc(Assembler::equal, Continue); | |
1091 __ bind(L); | |
1092 | |
1093 // Don't use call_VM as it will see a possible pending exception and forward it | |
1094 // and never return here preventing us from clearing _last_native_pc down below. | |
1095 // Also can't use call_VM_leaf either as it will check to see if rsi & rdi are | |
1096 // preserved and correspond to the bcp/locals pointers. So we do a runtime call | |
1097 // by hand. | |
1098 // | |
304 | 1099 __ push(thread); |
0 | 1100 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, |
1101 JavaThread::check_special_condition_for_native_trans))); | |
1102 __ increment(rsp, wordSize); | |
1103 __ get_thread(thread); | |
1104 | |
1105 __ bind(Continue); | |
1106 } | |
1107 | |
1108 // change thread state | |
1109 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
1110 | |
1111 __ reset_last_Java_frame(thread, true, true); | |
1112 | |
1113 // reset handle block | |
304 | 1114 __ movptr(t, Address(thread, JavaThread::active_handles_offset())); |
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1115 __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), NULL_WORD); |
0 | 1116 |
1117 // If result was an oop then unbox and save it in the frame | |
1118 { Label L; | |
1119 Label no_oop, store_result; | |
1120 ExternalAddress handler(AbstractInterpreter::result_handler(T_OBJECT)); | |
1121 __ cmpptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), | |
1122 handler.addr()); | |
1123 __ jcc(Assembler::notEqual, no_oop); | |
304 | 1124 __ cmpptr(Address(rsp, 0), (int32_t)NULL_WORD); |
0 | 1125 __ pop(ltos); |
304 | 1126 __ testptr(rax, rax); |
0 | 1127 __ jcc(Assembler::zero, store_result); |
1128 // unbox | |
304 | 1129 __ movptr(rax, Address(rax, 0)); |
0 | 1130 __ bind(store_result); |
304 | 1131 __ movptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset)*wordSize), rax); |
0 | 1132 // keep stack depth as expected by pushing oop which will eventually be discarded |
1133 __ push(ltos); | |
1134 __ bind(no_oop); | |
1135 } | |
1136 | |
1137 { | |
1138 Label no_reguard; | |
1139 __ cmpl(Address(thread, JavaThread::stack_guard_state_offset()), JavaThread::stack_guard_yellow_disabled); | |
1140 __ jcc(Assembler::notEqual, no_reguard); | |
1141 | |
304 | 1142 __ pusha(); |
0 | 1143 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
304 | 1144 __ popa(); |
0 | 1145 |
1146 __ bind(no_reguard); | |
1147 } | |
1148 | |
1149 // restore rsi to have legal interpreter frame, | |
1150 // i.e., bci == 0 <=> rsi == code_base() | |
1151 // Can't call_VM until bcp is within reasonable. | |
1152 __ get_method(method); // method is junk from thread_in_native to now. | |
1153 __ verify_oop(method); | |
304 | 1154 __ movptr(rsi, Address(method,methodOopDesc::const_offset())); // get constMethodOop |
1155 __ lea(rsi, Address(rsi,constMethodOopDesc::codes_offset())); // get codebase | |
0 | 1156 |
1157 // handle exceptions (exception handling will handle unlocking!) | |
1158 { Label L; | |
304 | 1159 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
0 | 1160 __ jcc(Assembler::zero, L); |
1161 // Note: At some point we may want to unify this with the code used in call_VM_base(); | |
1162 // i.e., we should use the StubRoutines::forward_exception code. For now this | |
1163 // doesn't work here because the rsp is not correctly set at this point. | |
1164 __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); | |
1165 __ should_not_reach_here(); | |
1166 __ bind(L); | |
1167 } | |
1168 | |
1169 // do unlocking if necessary | |
1170 { Label L; | |
1171 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); | |
1172 __ testl(t, JVM_ACC_SYNCHRONIZED); | |
1173 __ jcc(Assembler::zero, L); | |
1174 // the code below should be shared with interpreter macro assembler implementation | |
1175 { Label unlock; | |
1176 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
1177 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
1178 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
1179 | |
304 | 1180 __ lea(rdx, monitor); // address of first monitor |
0 | 1181 |
304 | 1182 __ movptr(t, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
1183 __ testptr(t, t); | |
0 | 1184 __ jcc(Assembler::notZero, unlock); |
1185 | |
1186 // Entry already unlocked, need to throw exception | |
1187 __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
1188 __ should_not_reach_here(); | |
1189 | |
1190 __ bind(unlock); | |
1191 __ unlock_object(rdx); | |
1192 } | |
1193 __ bind(L); | |
1194 } | |
1195 | |
1196 // jvmti/dtrace support | |
1197 // Note: This must happen _after_ handling/throwing any exceptions since | |
1198 // the exception handler code notifies the runtime of method exits | |
1199 // too. If this happens before, method entry/exit notifications are | |
1200 // not properly paired (was bug - gri 11/22/99). | |
1201 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
1202 | |
1203 // restore potential result in rdx:rax, call result handler to restore potential result in ST0 & handle result | |
1204 __ pop(ltos); | |
304 | 1205 __ movptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
0 | 1206 __ call(t); |
1207 | |
1208 // remove activation | |
304 | 1209 __ movptr(t, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 1210 __ leave(); // remove frame anchor |
304 | 1211 __ pop(rdi); // get return address |
1212 __ mov(rsp, t); // set sp to sender sp | |
0 | 1213 __ jmp(rdi); |
1214 | |
1215 if (inc_counter) { | |
1216 // Handle overflow of counter and compile method | |
1217 __ bind(invocation_counter_overflow); | |
1218 generate_counter_overflow(&continue_after_compile); | |
1219 } | |
1220 | |
1221 return entry_point; | |
1222 } | |
1223 | |
1224 // | |
1225 // Generic interpreted method entry to (asm) interpreter | |
1226 // | |
1227 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
1228 // determine code generation flags | |
1229 bool inc_counter = UseCompiler || CountCompiledCalls; | |
1230 | |
1231 // rbx,: methodOop | |
1232 // rsi: sender sp | |
1233 address entry_point = __ pc(); | |
1234 | |
1235 | |
1236 const Address size_of_parameters(rbx, methodOopDesc::size_of_parameters_offset()); | |
1237 const Address size_of_locals (rbx, methodOopDesc::size_of_locals_offset()); | |
1238 const Address invocation_counter(rbx, methodOopDesc::invocation_counter_offset() + InvocationCounter::counter_offset()); | |
1239 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
1240 | |
1241 // get parameter size (always needed) | |
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1242 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 1243 |
1244 // rbx,: methodOop | |
1245 // rcx: size of parameters | |
1246 | |
1247 // rsi: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
1248 | |
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1249 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
0 | 1250 __ subl(rdx, rcx); // rdx = no. of additional locals |
1251 | |
1252 // see if we've got enough room on the stack for locals plus overhead. | |
1253 generate_stack_overflow_check(); | |
1254 | |
1255 // get return address | |
304 | 1256 __ pop(rax); |
0 | 1257 |
1258 // compute beginning of parameters (rdi) | |
304 | 1259 __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); |
0 | 1260 |
1261 // rdx - # of additional locals | |
1262 // allocate space for locals | |
1263 // explicitly initialize locals | |
1264 { | |
1265 Label exit, loop; | |
1266 __ testl(rdx, rdx); | |
1267 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 | |
1268 __ bind(loop); | |
304 | 1269 __ push((int32_t)NULL_WORD); // initialize local variables |
0 | 1270 __ decrement(rdx); // until everything initialized |
1271 __ jcc(Assembler::greater, loop); | |
1272 __ bind(exit); | |
1273 } | |
1274 | |
1275 if (inc_counter) __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
1276 // initialize fixed part of activation frame | |
1277 generate_fixed_frame(false); | |
1278 | |
1279 // make sure method is not native & not abstract | |
1280 #ifdef ASSERT | |
1281 __ movl(rax, access_flags); | |
1282 { | |
1283 Label L; | |
1284 __ testl(rax, JVM_ACC_NATIVE); | |
1285 __ jcc(Assembler::zero, L); | |
1286 __ stop("tried to execute native method as non-native"); | |
1287 __ bind(L); | |
1288 } | |
1289 { Label L; | |
1290 __ testl(rax, JVM_ACC_ABSTRACT); | |
1291 __ jcc(Assembler::zero, L); | |
1292 __ stop("tried to execute abstract method in interpreter"); | |
1293 __ bind(L); | |
1294 } | |
1295 #endif | |
1296 | |
1297 // Since at this point in the method invocation the exception handler | |
1298 // would try to exit the monitor of synchronized methods which hasn't | |
1299 // been entered yet, we set the thread local variable | |
1300 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
1301 // check this flag. | |
1302 | |
1303 __ get_thread(rax); | |
1304 const Address do_not_unlock_if_synchronized(rax, | |
1305 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
1306 __ movbool(do_not_unlock_if_synchronized, true); | |
1307 | |
1308 // increment invocation count & check for overflow | |
1309 Label invocation_counter_overflow; | |
1310 Label profile_method; | |
1311 Label profile_method_continue; | |
1312 if (inc_counter) { | |
1313 generate_counter_incr(&invocation_counter_overflow, &profile_method, &profile_method_continue); | |
1314 if (ProfileInterpreter) { | |
1315 __ bind(profile_method_continue); | |
1316 } | |
1317 } | |
1318 Label continue_after_compile; | |
1319 __ bind(continue_after_compile); | |
1320 | |
1321 bang_stack_shadow_pages(false); | |
1322 | |
1323 // reset the _do_not_unlock_if_synchronized flag | |
1324 __ get_thread(rax); | |
1325 __ movbool(do_not_unlock_if_synchronized, false); | |
1326 | |
1327 // check for synchronized methods | |
1328 // Must happen AFTER invocation_counter check and stack overflow check, | |
1329 // so method is not locked if overflows. | |
1330 // | |
1331 if (synchronized) { | |
1332 // Allocate monitor and lock method | |
1333 lock_method(); | |
1334 } else { | |
1335 // no synchronization necessary | |
1336 #ifdef ASSERT | |
1337 { Label L; | |
1338 __ movl(rax, access_flags); | |
1339 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
1340 __ jcc(Assembler::zero, L); | |
1341 __ stop("method needs synchronization"); | |
1342 __ bind(L); | |
1343 } | |
1344 #endif | |
1345 } | |
1346 | |
1347 // start execution | |
1348 #ifdef ASSERT | |
1349 { Label L; | |
1350 const Address monitor_block_top (rbp, | |
1351 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 1352 __ movptr(rax, monitor_block_top); |
1353 __ cmpptr(rax, rsp); | |
0 | 1354 __ jcc(Assembler::equal, L); |
1355 __ stop("broken stack frame setup in interpreter"); | |
1356 __ bind(L); | |
1357 } | |
1358 #endif | |
1359 | |
1360 // jvmti support | |
1361 __ notify_method_entry(); | |
1362 | |
1363 __ dispatch_next(vtos); | |
1364 | |
1365 // invocation counter overflow | |
1366 if (inc_counter) { | |
1367 if (ProfileInterpreter) { | |
1368 // We have decided to profile this method in the interpreter | |
1369 __ bind(profile_method); | |
1370 | |
1371 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method), rsi, true); | |
1372 | |
304 | 1373 __ movptr(rbx, Address(rbp, method_offset)); // restore methodOop |
1374 __ movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); | |
1375 __ movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); | |
0 | 1376 __ test_method_data_pointer(rax, profile_method_continue); |
304 | 1377 __ addptr(rax, in_bytes(methodDataOopDesc::data_offset())); |
1378 __ movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); | |
0 | 1379 __ jmp(profile_method_continue); |
1380 } | |
1381 // Handle overflow of counter and compile method | |
1382 __ bind(invocation_counter_overflow); | |
1383 generate_counter_overflow(&continue_after_compile); | |
1384 } | |
1385 | |
1386 return entry_point; | |
1387 } | |
1388 | |
1389 //------------------------------------------------------------------------------------------------------------------------ | |
1390 // Entry points | |
1391 // | |
1392 // Here we generate the various kind of entries into the interpreter. | |
1393 // The two main entry type are generic bytecode methods and native call method. | |
1394 // These both come in synchronized and non-synchronized versions but the | |
1395 // frame layout they create is very similar. The other method entry | |
1396 // types are really just special purpose entries that are really entry | |
1397 // and interpretation all in one. These are for trivial methods like | |
1398 // accessor, empty, or special math methods. | |
1399 // | |
1400 // When control flow reaches any of the entry types for the interpreter | |
1401 // the following holds -> | |
1402 // | |
1403 // Arguments: | |
1404 // | |
1405 // rbx,: methodOop | |
1406 // rcx: receiver | |
1407 // | |
1408 // | |
1409 // Stack layout immediately at entry | |
1410 // | |
1411 // [ return address ] <--- rsp | |
1412 // [ parameter n ] | |
1413 // ... | |
1414 // [ parameter 1 ] | |
1415 // [ expression stack ] (caller's java expression stack) | |
1416 | |
1417 // Assuming that we don't go to one of the trivial specialized | |
1418 // entries the stack will look like below when we are ready to execute | |
1419 // the first bytecode (or call the native routine). The register usage | |
1420 // will be as the template based interpreter expects (see interpreter_x86.hpp). | |
1421 // | |
1422 // local variables follow incoming parameters immediately; i.e. | |
1423 // the return address is moved to the end of the locals). | |
1424 // | |
1425 // [ monitor entry ] <--- rsp | |
1426 // ... | |
1427 // [ monitor entry ] | |
1428 // [ expr. stack bottom ] | |
1429 // [ saved rsi ] | |
1430 // [ current rdi ] | |
1431 // [ methodOop ] | |
1432 // [ saved rbp, ] <--- rbp, | |
1433 // [ return address ] | |
1434 // [ local variable m ] | |
1435 // ... | |
1436 // [ local variable 1 ] | |
1437 // [ parameter n ] | |
1438 // ... | |
1439 // [ parameter 1 ] <--- rdi | |
1440 | |
1441 address AbstractInterpreterGenerator::generate_method_entry(AbstractInterpreter::MethodKind kind) { | |
1442 // determine code generation flags | |
1443 bool synchronized = false; | |
1444 address entry_point = NULL; | |
1445 | |
1446 switch (kind) { | |
1447 case Interpreter::zerolocals : break; | |
1448 case Interpreter::zerolocals_synchronized: synchronized = true; break; | |
1449 case Interpreter::native : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(false); break; | |
1450 case Interpreter::native_synchronized : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(true); break; | |
1451 case Interpreter::empty : entry_point = ((InterpreterGenerator*)this)->generate_empty_entry(); break; | |
1452 case Interpreter::accessor : entry_point = ((InterpreterGenerator*)this)->generate_accessor_entry(); break; | |
1453 case Interpreter::abstract : entry_point = ((InterpreterGenerator*)this)->generate_abstract_entry(); break; | |
710 | 1454 case Interpreter::method_handle : entry_point = ((InterpreterGenerator*)this)->generate_method_handle_entry(); break; |
0 | 1455 |
1456 case Interpreter::java_lang_math_sin : // fall thru | |
1457 case Interpreter::java_lang_math_cos : // fall thru | |
1458 case Interpreter::java_lang_math_tan : // fall thru | |
1459 case Interpreter::java_lang_math_abs : // fall thru | |
1460 case Interpreter::java_lang_math_log : // fall thru | |
1461 case Interpreter::java_lang_math_log10 : // fall thru | |
1462 case Interpreter::java_lang_math_sqrt : entry_point = ((InterpreterGenerator*)this)->generate_math_entry(kind); break; | |
1463 default : ShouldNotReachHere(); break; | |
1464 } | |
1465 | |
1466 if (entry_point) return entry_point; | |
1467 | |
1468 return ((InterpreterGenerator*)this)->generate_normal_entry(synchronized); | |
1469 | |
1470 } | |
1471 | |
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1472 // These should never be compiled since the interpreter will prefer |
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1473 // the compiled version to the intrinsic version. |
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1474 bool AbstractInterpreter::can_be_compiled(methodHandle m) { |
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1475 switch (method_kind(m)) { |
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1476 case Interpreter::java_lang_math_sin : // fall thru |
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1477 case Interpreter::java_lang_math_cos : // fall thru |
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1478 case Interpreter::java_lang_math_tan : // fall thru |
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1479 case Interpreter::java_lang_math_abs : // fall thru |
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1480 case Interpreter::java_lang_math_log : // fall thru |
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1481 case Interpreter::java_lang_math_log10 : // fall thru |
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1482 case Interpreter::java_lang_math_sqrt : |
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1483 return false; |
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1484 default: |
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1485 return true; |
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1486 } |
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1487 } |
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1488 |
0 | 1489 // How much stack a method activation needs in words. |
1490 int AbstractInterpreter::size_top_interpreter_activation(methodOop method) { | |
1491 | |
1492 const int stub_code = 4; // see generate_call_stub | |
1493 // Save space for one monitor to get into the interpreted method in case | |
1494 // the method is synchronized | |
1495 int monitor_size = method->is_synchronized() ? | |
1496 1*frame::interpreter_frame_monitor_size() : 0; | |
1497 | |
1498 // total overhead size: entry_size + (saved rbp, thru expr stack bottom). | |
1499 // be sure to change this if you add/subtract anything to/from the overhead area | |
1500 const int overhead_size = -frame::interpreter_frame_initial_sp_offset; | |
1501 | |
710 | 1502 const int extra_stack = methodOopDesc::extra_stack_entries(); |
1503 const int method_stack = (method->max_locals() + method->max_stack() + extra_stack) * | |
1506 | 1504 Interpreter::stackElementWords; |
0 | 1505 return overhead_size + method_stack + stub_code; |
1506 } | |
1507 | |
1508 // asm based interpreter deoptimization helpers | |
1509 | |
1510 int AbstractInterpreter::layout_activation(methodOop method, | |
1511 int tempcount, | |
1512 int popframe_extra_args, | |
1513 int moncount, | |
1514 int callee_param_count, | |
1515 int callee_locals, | |
1516 frame* caller, | |
1517 frame* interpreter_frame, | |
1518 bool is_top_frame) { | |
1519 // Note: This calculation must exactly parallel the frame setup | |
1520 // in AbstractInterpreterGenerator::generate_method_entry. | |
1521 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
1522 // The frame interpreter_frame, if not NULL, is guaranteed to be the right size, | |
1523 // as determined by a previous call to this method. | |
1524 // It is also guaranteed to be walkable even though it is in a skeletal state | |
1525 // NOTE: return size is in words not bytes | |
1526 | |
1527 // fixed size of an interpreter frame: | |
1506 | 1528 int max_locals = method->max_locals() * Interpreter::stackElementWords; |
0 | 1529 int extra_locals = (method->max_locals() - method->size_of_parameters()) * |
1506 | 1530 Interpreter::stackElementWords; |
0 | 1531 |
1532 int overhead = frame::sender_sp_offset - frame::interpreter_frame_initial_sp_offset; | |
1533 | |
1534 // Our locals were accounted for by the caller (or last_frame_adjust on the transistion) | |
1535 // Since the callee parameters already account for the callee's params we only need to account for | |
1536 // the extra locals. | |
1537 | |
1538 | |
1539 int size = overhead + | |
1506 | 1540 ((callee_locals - callee_param_count)*Interpreter::stackElementWords) + |
0 | 1541 (moncount*frame::interpreter_frame_monitor_size()) + |
1506 | 1542 tempcount*Interpreter::stackElementWords + popframe_extra_args; |
0 | 1543 |
1544 if (interpreter_frame != NULL) { | |
1545 #ifdef ASSERT | |
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1546 if (!EnableMethodHandles) |
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1547 // @@@ FIXME: Should we correct interpreter_frame_sender_sp in the calling sequences? |
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1548 // Probably, since deoptimization doesn't work yet. |
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1549 assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable"); |
0 | 1550 assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)"); |
1551 #endif | |
1552 | |
1553 interpreter_frame->interpreter_frame_set_method(method); | |
1554 // NOTE the difference in using sender_sp and interpreter_frame_sender_sp | |
1555 // interpreter_frame_sender_sp is the original sp of the caller (the unextended_sp) | |
1556 // and sender_sp is fp+8 | |
1557 intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; | |
1558 | |
1559 interpreter_frame->interpreter_frame_set_locals(locals); | |
1560 BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); | |
1561 BasicObjectLock* monbot = montop - moncount; | |
1562 interpreter_frame->interpreter_frame_set_monitor_end(monbot); | |
1563 | |
1564 // Set last_sp | |
1565 intptr_t* rsp = (intptr_t*) monbot - | |
1506 | 1566 tempcount*Interpreter::stackElementWords - |
0 | 1567 popframe_extra_args; |
1568 interpreter_frame->interpreter_frame_set_last_sp(rsp); | |
1569 | |
1570 // All frames but the initial (oldest) interpreter frame we fill in have a | |
1571 // value for sender_sp that allows walking the stack but isn't | |
1572 // truly correct. Correct the value here. | |
1573 | |
1574 if (extra_locals != 0 && | |
1575 interpreter_frame->sender_sp() == interpreter_frame->interpreter_frame_sender_sp() ) { | |
1576 interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + extra_locals); | |
1577 } | |
1578 *interpreter_frame->interpreter_frame_cache_addr() = | |
1579 method->constants()->cache(); | |
1580 } | |
1581 return size; | |
1582 } | |
1583 | |
1584 | |
1585 //------------------------------------------------------------------------------------------------------------------------ | |
1586 // Exceptions | |
1587 | |
1588 void TemplateInterpreterGenerator::generate_throw_exception() { | |
1589 // Entry point in previous activation (i.e., if the caller was interpreted) | |
1590 Interpreter::_rethrow_exception_entry = __ pc(); | |
1295 | 1591 const Register thread = rcx; |
0 | 1592 |
1593 // Restore sp to interpreter_frame_last_sp even though we are going | |
1594 // to empty the expression stack for the exception processing. | |
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1595 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 1596 // rax,: exception |
1597 // rdx: return address/pc that threw exception | |
1598 __ restore_bcp(); // rsi points to call/send | |
1599 __ restore_locals(); | |
1600 | |
1601 // Entry point for exceptions thrown within interpreter code | |
1602 Interpreter::_throw_exception_entry = __ pc(); | |
1603 // expression stack is undefined here | |
1604 // rax,: exception | |
1605 // rsi: exception bcp | |
1606 __ verify_oop(rax); | |
1607 | |
1608 // expression stack must be empty before entering the VM in case of an exception | |
1609 __ empty_expression_stack(); | |
1610 __ empty_FPU_stack(); | |
1611 // find exception handler address and preserve exception oop | |
1612 __ call_VM(rdx, CAST_FROM_FN_PTR(address, InterpreterRuntime::exception_handler_for_exception), rax); | |
1613 // rax,: exception handler entry point | |
1614 // rdx: preserved exception oop | |
1615 // rsi: bcp for exception handler | |
1616 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
1617 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
1618 | |
1619 // If the exception is not handled in the current frame the frame is removed and | |
1620 // the exception is rethrown (i.e. exception continuation is _rethrow_exception). | |
1621 // | |
1622 // Note: At this point the bci is still the bxi for the instruction which caused | |
1623 // the exception and the expression stack is empty. Thus, for any VM calls | |
1624 // at this point, GC will find a legal oop map (with empty expression stack). | |
1625 | |
1626 // In current activation | |
1627 // tos: exception | |
1628 // rsi: exception bcp | |
1629 | |
1630 // | |
1631 // JVMTI PopFrame support | |
1632 // | |
1633 | |
1634 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
1635 __ empty_expression_stack(); | |
1636 __ empty_FPU_stack(); | |
1637 // Set the popframe_processing bit in pending_popframe_condition indicating that we are | |
1638 // currently handling popframe, so that call_VMs that may happen later do not trigger new | |
1639 // popframe handling cycles. | |
1295 | 1640 __ get_thread(thread); |
1641 __ movl(rdx, Address(thread, JavaThread::popframe_condition_offset())); | |
0 | 1642 __ orl(rdx, JavaThread::popframe_processing_bit); |
1295 | 1643 __ movl(Address(thread, JavaThread::popframe_condition_offset()), rdx); |
0 | 1644 |
1645 { | |
1646 // Check to see whether we are returning to a deoptimized frame. | |
1647 // (The PopFrame call ensures that the caller of the popped frame is | |
1648 // either interpreted or compiled and deoptimizes it if compiled.) | |
1649 // In this case, we can't call dispatch_next() after the frame is | |
1650 // popped, but instead must save the incoming arguments and restore | |
1651 // them after deoptimization has occurred. | |
1652 // | |
1653 // Note that we don't compare the return PC against the | |
1654 // deoptimization blob's unpack entry because of the presence of | |
1655 // adapter frames in C2. | |
1656 Label caller_not_deoptimized; | |
304 | 1657 __ movptr(rdx, Address(rbp, frame::return_addr_offset * wordSize)); |
0 | 1658 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::interpreter_contains), rdx); |
1659 __ testl(rax, rax); | |
1660 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
1661 | |
1662 // Compute size of arguments for saving when returning to deoptimized caller | |
1663 __ get_method(rax); | |
1664 __ verify_oop(rax); | |
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1665 __ load_unsigned_short(rax, Address(rax, in_bytes(methodOopDesc::size_of_parameters_offset()))); |
1506 | 1666 __ shlptr(rax, Interpreter::logStackElementSize); |
0 | 1667 __ restore_locals(); |
304 | 1668 __ subptr(rdi, rax); |
1669 __ addptr(rdi, wordSize); | |
0 | 1670 // Save these arguments |
1295 | 1671 __ get_thread(thread); |
1672 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::popframe_preserve_args), thread, rax, rdi); | |
0 | 1673 |
1674 __ remove_activation(vtos, rdx, | |
1675 /* throw_monitor_exception */ false, | |
1676 /* install_monitor_exception */ false, | |
1677 /* notify_jvmdi */ false); | |
1678 | |
1679 // Inform deoptimization that it is responsible for restoring these arguments | |
1295 | 1680 __ get_thread(thread); |
1681 __ movl(Address(thread, JavaThread::popframe_condition_offset()), JavaThread::popframe_force_deopt_reexecution_bit); | |
0 | 1682 |
1683 // Continue in deoptimization handler | |
1684 __ jmp(rdx); | |
1685 | |
1686 __ bind(caller_not_deoptimized); | |
1687 } | |
1688 | |
1689 __ remove_activation(vtos, rdx, | |
1690 /* throw_monitor_exception */ false, | |
1691 /* install_monitor_exception */ false, | |
1692 /* notify_jvmdi */ false); | |
1693 | |
1694 // Finish with popframe handling | |
1695 // A previous I2C followed by a deoptimization might have moved the | |
1696 // outgoing arguments further up the stack. PopFrame expects the | |
1697 // mutations to those outgoing arguments to be preserved and other | |
1698 // constraints basically require this frame to look exactly as | |
1699 // though it had previously invoked an interpreted activation with | |
1700 // no space between the top of the expression stack (current | |
1701 // last_sp) and the top of stack. Rather than force deopt to | |
1702 // maintain this kind of invariant all the time we call a small | |
1703 // fixup routine to move the mutated arguments onto the top of our | |
1704 // expression stack if necessary. | |
304 | 1705 __ mov(rax, rsp); |
1706 __ movptr(rbx, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
1295 | 1707 __ get_thread(thread); |
0 | 1708 // PC must point into interpreter here |
1295 | 1709 __ set_last_Java_frame(thread, noreg, rbp, __ pc()); |
1710 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), thread, rax, rbx); | |
1711 __ get_thread(thread); | |
1712 __ reset_last_Java_frame(thread, true, true); | |
0 | 1713 // Restore the last_sp and null it out |
304 | 1714 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
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1715 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 1716 |
1717 __ restore_bcp(); | |
1718 __ restore_locals(); | |
1719 // The method data pointer was incremented already during | |
1720 // call profiling. We have to restore the mdp for the current bcp. | |
1721 if (ProfileInterpreter) { | |
1722 __ set_method_data_pointer_for_bcp(); | |
1723 } | |
1724 | |
1725 // Clear the popframe condition flag | |
1295 | 1726 __ get_thread(thread); |
1727 __ movl(Address(thread, JavaThread::popframe_condition_offset()), JavaThread::popframe_inactive); | |
0 | 1728 |
1729 __ dispatch_next(vtos); | |
1730 // end of PopFrame support | |
1731 | |
1732 Interpreter::_remove_activation_entry = __ pc(); | |
1733 | |
1734 // preserve exception over this code sequence | |
1735 __ pop_ptr(rax); | |
1295 | 1736 __ get_thread(thread); |
1737 __ movptr(Address(thread, JavaThread::vm_result_offset()), rax); | |
0 | 1738 // remove the activation (without doing throws on illegalMonitorExceptions) |
1739 __ remove_activation(vtos, rdx, false, true, false); | |
1740 // restore exception | |
1295 | 1741 __ get_thread(thread); |
1742 __ movptr(rax, Address(thread, JavaThread::vm_result_offset())); | |
1743 __ movptr(Address(thread, JavaThread::vm_result_offset()), NULL_WORD); | |
0 | 1744 __ verify_oop(rax); |
1745 | |
1746 // Inbetween activations - previous activation type unknown yet | |
1747 // compute continuation point - the continuation point expects | |
1748 // the following registers set up: | |
1749 // | |
1295 | 1750 // rax: exception |
0 | 1751 // rdx: return address/pc that threw exception |
1752 // rsp: expression stack of caller | |
1295 | 1753 // rbp: rbp, of caller |
304 | 1754 __ push(rax); // save exception |
1755 __ push(rdx); // save return address | |
1295 | 1756 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), thread, rdx); |
304 | 1757 __ mov(rbx, rax); // save exception handler |
1758 __ pop(rdx); // restore return address | |
1759 __ pop(rax); // restore exception | |
0 | 1760 // Note that an "issuing PC" is actually the next PC after the call |
1761 __ jmp(rbx); // jump to exception handler of caller | |
1762 } | |
1763 | |
1764 | |
1765 // | |
1766 // JVMTI ForceEarlyReturn support | |
1767 // | |
1768 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
1769 address entry = __ pc(); | |
1295 | 1770 const Register thread = rcx; |
0 | 1771 |
1772 __ restore_bcp(); | |
1773 __ restore_locals(); | |
1774 __ empty_expression_stack(); | |
1775 __ empty_FPU_stack(); | |
1776 __ load_earlyret_value(state); | |
1777 | |
1295 | 1778 __ get_thread(thread); |
1779 __ movptr(rcx, Address(thread, JavaThread::jvmti_thread_state_offset())); | |
0 | 1780 const Address cond_addr(rcx, JvmtiThreadState::earlyret_state_offset()); |
1781 | |
1782 // Clear the earlyret state | |
1783 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
1784 | |
1785 __ remove_activation(state, rsi, | |
1786 false, /* throw_monitor_exception */ | |
1787 false, /* install_monitor_exception */ | |
1788 true); /* notify_jvmdi */ | |
1789 __ jmp(rsi); | |
1790 return entry; | |
1791 } // end of ForceEarlyReturn support | |
1792 | |
1793 | |
1794 //------------------------------------------------------------------------------------------------------------------------ | |
1795 // Helper for vtos entry point generation | |
1796 | |
1797 void TemplateInterpreterGenerator::set_vtos_entry_points (Template* t, address& bep, address& cep, address& sep, address& aep, address& iep, address& lep, address& fep, address& dep, address& vep) { | |
1798 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
1799 Label L; | |
1800 fep = __ pc(); __ push(ftos); __ jmp(L); | |
1801 dep = __ pc(); __ push(dtos); __ jmp(L); | |
1802 lep = __ pc(); __ push(ltos); __ jmp(L); | |
1803 aep = __ pc(); __ push(atos); __ jmp(L); | |
1804 bep = cep = sep = // fall through | |
1805 iep = __ pc(); __ push(itos); // fall through | |
1806 vep = __ pc(); __ bind(L); // fall through | |
1807 generate_and_dispatch(t); | |
1808 } | |
1809 | |
1810 //------------------------------------------------------------------------------------------------------------------------ | |
1811 // Generation of individual instructions | |
1812 | |
1813 // helpers for generate_and_dispatch | |
1814 | |
1815 | |
1816 | |
1817 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
1818 : TemplateInterpreterGenerator(code) { | |
1819 generate_all(); // down here so it can be "virtual" | |
1820 } | |
1821 | |
1822 //------------------------------------------------------------------------------------------------------------------------ | |
1823 | |
1824 // Non-product code | |
1825 #ifndef PRODUCT | |
1826 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
1827 address entry = __ pc(); | |
1828 | |
1829 // prepare expression stack | |
304 | 1830 __ pop(rcx); // pop return address so expression stack is 'pure' |
0 | 1831 __ push(state); // save tosca |
1832 | |
1833 // pass tosca registers as arguments & call tracer | |
1834 __ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), rcx, rax, rdx); | |
304 | 1835 __ mov(rcx, rax); // make sure return address is not destroyed by pop(state) |
0 | 1836 __ pop(state); // restore tosca |
1837 | |
1838 // return | |
1839 __ jmp(rcx); | |
1840 | |
1841 return entry; | |
1842 } | |
1843 | |
1844 | |
1845 void TemplateInterpreterGenerator::count_bytecode() { | |
304 | 1846 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); |
0 | 1847 } |
1848 | |
1849 | |
1850 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
304 | 1851 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); |
0 | 1852 } |
1853 | |
1854 | |
1855 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
1856 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
1857 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
1858 __ orl(rbx, ((int)t->bytecode()) << BytecodePairHistogram::log2_number_of_codes); | |
1859 ExternalAddress table((address) BytecodePairHistogram::_counters); | |
1860 Address index(noreg, rbx, Address::times_4); | |
304 | 1861 __ incrementl(ArrayAddress(table, index)); |
0 | 1862 } |
1863 | |
1864 | |
1865 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
1866 // Call a little run-time stub to avoid blow-up for each bytecode. | |
1867 // The run-time runtime saves the right registers, depending on | |
1868 // the tosca in-state for the given template. | |
1869 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
1870 "entry must have been generated"); | |
1871 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); | |
1872 } | |
1873 | |
1874 | |
1875 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
1876 Label L; | |
1877 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
1878 StopInterpreterAt); | |
1879 __ jcc(Assembler::notEqual, L); | |
1880 __ int3(); | |
1881 __ bind(L); | |
1882 } | |
1883 #endif // !PRODUCT | |
1884 #endif // CC_INTERP |