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annotate src/cpu/x86/vm/templateInterpreter_x86_32.cpp @ 1954:e3e1fb85e50a
Merge
author | jmasa |
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date | Mon, 15 Nov 2010 16:25:14 -0800 |
parents | d5d065957597 |
children | f95d63e2154a |
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 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_templateInterpreter_x86_32.cpp.incl" | |
27 | |
28 #define __ _masm-> | |
29 | |
30 | |
31 #ifndef CC_INTERP | |
32 const int method_offset = frame::interpreter_frame_method_offset * wordSize; | |
33 const int bci_offset = frame::interpreter_frame_bcx_offset * wordSize; | |
34 const int locals_offset = frame::interpreter_frame_locals_offset * wordSize; | |
35 | |
36 //------------------------------------------------------------------------------------------------------------------------ | |
37 | |
38 address TemplateInterpreterGenerator::generate_StackOverflowError_handler() { | |
39 address entry = __ pc(); | |
40 | |
41 // Note: There should be a minimal interpreter frame set up when stack | |
42 // overflow occurs since we check explicitly for it now. | |
43 // | |
44 #ifdef ASSERT | |
45 { Label L; | |
304 | 46 __ lea(rax, Address(rbp, |
0 | 47 frame::interpreter_frame_monitor_block_top_offset * wordSize)); |
304 | 48 __ cmpptr(rax, rsp); // rax, = maximal rsp for current rbp, |
0 | 49 // (stack grows negative) |
50 __ jcc(Assembler::aboveEqual, L); // check if frame is complete | |
51 __ stop ("interpreter frame not set up"); | |
52 __ bind(L); | |
53 } | |
54 #endif // ASSERT | |
55 // Restore bcp under the assumption that the current frame is still | |
56 // interpreted | |
57 __ restore_bcp(); | |
58 | |
59 // expression stack must be empty before entering the VM if an exception | |
60 // happened | |
61 __ empty_expression_stack(); | |
62 __ empty_FPU_stack(); | |
63 // throw exception | |
64 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_StackOverflowError)); | |
65 return entry; | |
66 } | |
67 | |
68 address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(const char* name) { | |
69 address entry = __ pc(); | |
70 // expression stack must be empty before entering the VM if an exception happened | |
71 __ empty_expression_stack(); | |
72 __ empty_FPU_stack(); | |
73 // setup parameters | |
74 // ??? convention: expect aberrant index in register rbx, | |
75 __ lea(rax, ExternalAddress((address)name)); | |
76 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException), rax, rbx); | |
77 return entry; | |
78 } | |
79 | |
80 address TemplateInterpreterGenerator::generate_ClassCastException_handler() { | |
81 address entry = __ pc(); | |
82 // object is at TOS | |
304 | 83 __ pop(rax); |
0 | 84 // expression stack must be empty before entering the VM if an exception |
85 // happened | |
86 __ empty_expression_stack(); | |
87 __ empty_FPU_stack(); | |
88 __ call_VM(noreg, | |
89 CAST_FROM_FN_PTR(address, | |
90 InterpreterRuntime::throw_ClassCastException), | |
91 rax); | |
92 return entry; | |
93 } | |
94 | |
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95 // Arguments are: required type at TOS+4, failing object (or NULL) at TOS. |
710 | 96 address TemplateInterpreterGenerator::generate_WrongMethodType_handler() { |
97 address entry = __ pc(); | |
98 | |
99 __ pop(rbx); // actual failing object is at TOS | |
100 __ pop(rax); // required type is at TOS+4 | |
101 | |
102 __ verify_oop(rbx); | |
103 __ verify_oop(rax); | |
104 | |
105 // Various method handle types use interpreter registers as temps. | |
106 __ restore_bcp(); | |
107 __ restore_locals(); | |
108 | |
109 // Expression stack must be empty before entering the VM for an exception. | |
110 __ empty_expression_stack(); | |
111 __ empty_FPU_stack(); | |
112 __ call_VM(noreg, | |
113 CAST_FROM_FN_PTR(address, | |
114 InterpreterRuntime::throw_WrongMethodTypeException), | |
115 // pass required type, failing object (or NULL) | |
116 rax, rbx); | |
117 return entry; | |
118 } | |
119 | |
120 | |
0 | 121 address TemplateInterpreterGenerator::generate_exception_handler_common(const char* name, const char* message, bool pass_oop) { |
122 assert(!pass_oop || message == NULL, "either oop or message but not both"); | |
123 address entry = __ pc(); | |
124 if (pass_oop) { | |
125 // object is at TOS | |
304 | 126 __ pop(rbx); |
0 | 127 } |
128 // expression stack must be empty before entering the VM if an exception happened | |
129 __ empty_expression_stack(); | |
130 __ empty_FPU_stack(); | |
131 // setup parameters | |
132 __ lea(rax, ExternalAddress((address)name)); | |
133 if (pass_oop) { | |
134 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_klass_exception), rax, rbx); | |
135 } else { | |
136 if (message != NULL) { | |
137 __ lea(rbx, ExternalAddress((address)message)); | |
138 } else { | |
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139 __ movptr(rbx, NULL_WORD); |
0 | 140 } |
141 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), rax, rbx); | |
142 } | |
143 // throw exception | |
144 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
145 return entry; | |
146 } | |
147 | |
148 | |
149 address TemplateInterpreterGenerator::generate_continuation_for(TosState state) { | |
150 address entry = __ pc(); | |
151 // NULL last_sp until next java call | |
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152 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 153 __ dispatch_next(state); |
154 return entry; | |
155 } | |
156 | |
157 | |
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158 address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step) { |
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159 TosState incoming_state = state; |
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160 |
0 | 161 Label interpreter_entry; |
162 address compiled_entry = __ pc(); | |
163 | |
164 #ifdef COMPILER2 | |
165 // The FPU stack is clean if UseSSE >= 2 but must be cleaned in other cases | |
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166 if ((incoming_state == ftos && UseSSE < 1) || (incoming_state == dtos && UseSSE < 2)) { |
0 | 167 for (int i = 1; i < 8; i++) { |
168 __ ffree(i); | |
169 } | |
170 } else if (UseSSE < 2) { | |
171 __ empty_FPU_stack(); | |
172 } | |
173 #endif | |
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174 if ((incoming_state == ftos && UseSSE < 1) || (incoming_state == dtos && UseSSE < 2)) { |
0 | 175 __ MacroAssembler::verify_FPU(1, "generate_return_entry_for compiled"); |
176 } else { | |
177 __ MacroAssembler::verify_FPU(0, "generate_return_entry_for compiled"); | |
178 } | |
179 | |
180 __ jmp(interpreter_entry, relocInfo::none); | |
181 // emit a sentinel we can test for when converting an interpreter | |
182 // entry point to a compiled entry point. | |
183 __ a_long(Interpreter::return_sentinel); | |
184 __ a_long((int)compiled_entry); | |
185 address entry = __ pc(); | |
186 __ bind(interpreter_entry); | |
187 | |
188 // In SSE mode, interpreter returns FP results in xmm0 but they need | |
189 // to end up back on the FPU so it can operate on them. | |
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190 if (incoming_state == ftos && UseSSE >= 1) { |
304 | 191 __ subptr(rsp, wordSize); |
0 | 192 __ movflt(Address(rsp, 0), xmm0); |
193 __ fld_s(Address(rsp, 0)); | |
304 | 194 __ addptr(rsp, wordSize); |
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195 } else if (incoming_state == dtos && UseSSE >= 2) { |
304 | 196 __ subptr(rsp, 2*wordSize); |
0 | 197 __ movdbl(Address(rsp, 0), xmm0); |
198 __ fld_d(Address(rsp, 0)); | |
304 | 199 __ addptr(rsp, 2*wordSize); |
0 | 200 } |
201 | |
202 __ MacroAssembler::verify_FPU(state == ftos || state == dtos ? 1 : 0, "generate_return_entry_for in interpreter"); | |
203 | |
204 // Restore stack bottom in case i2c adjusted stack | |
304 | 205 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
0 | 206 // and NULL it as marker that rsp is now tos until next java call |
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207 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 208 |
209 __ restore_bcp(); | |
210 __ restore_locals(); | |
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211 |
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212 Label L_got_cache, L_giant_index; |
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213 if (EnableInvokeDynamic) { |
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214 __ cmpb(Address(rsi, 0), Bytecodes::_invokedynamic); |
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215 __ jcc(Assembler::equal, L_giant_index); |
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216 } |
1565 | 217 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u2)); |
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218 __ bind(L_got_cache); |
0 | 219 __ movl(rbx, Address(rbx, rcx, |
304 | 220 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + |
0 | 221 ConstantPoolCacheEntry::flags_offset())); |
304 | 222 __ andptr(rbx, 0xFF); |
223 __ lea(rsp, Address(rsp, rbx, Interpreter::stackElementScale())); | |
0 | 224 __ dispatch_next(state, step); |
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225 |
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226 // out of the main line of code... |
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227 if (EnableInvokeDynamic) { |
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228 __ bind(L_giant_index); |
1565 | 229 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u4)); |
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230 __ jmp(L_got_cache); |
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231 } |
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232 |
0 | 233 return entry; |
234 } | |
235 | |
236 | |
237 address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, int step) { | |
238 address entry = __ pc(); | |
239 | |
240 // In SSE mode, FP results are in xmm0 | |
241 if (state == ftos && UseSSE > 0) { | |
304 | 242 __ subptr(rsp, wordSize); |
0 | 243 __ movflt(Address(rsp, 0), xmm0); |
244 __ fld_s(Address(rsp, 0)); | |
304 | 245 __ addptr(rsp, wordSize); |
0 | 246 } else if (state == dtos && UseSSE >= 2) { |
304 | 247 __ subptr(rsp, 2*wordSize); |
0 | 248 __ movdbl(Address(rsp, 0), xmm0); |
249 __ fld_d(Address(rsp, 0)); | |
304 | 250 __ addptr(rsp, 2*wordSize); |
0 | 251 } |
252 | |
253 __ MacroAssembler::verify_FPU(state == ftos || state == dtos ? 1 : 0, "generate_deopt_entry_for in interpreter"); | |
254 | |
255 // The stack is not extended by deopt but we must NULL last_sp as this | |
256 // entry is like a "return". | |
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257 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 258 __ restore_bcp(); |
259 __ restore_locals(); | |
260 // handle exceptions | |
261 { Label L; | |
262 const Register thread = rcx; | |
263 __ get_thread(thread); | |
304 | 264 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
0 | 265 __ jcc(Assembler::zero, L); |
266 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); | |
267 __ should_not_reach_here(); | |
268 __ bind(L); | |
269 } | |
270 __ dispatch_next(state, step); | |
271 return entry; | |
272 } | |
273 | |
274 | |
275 int AbstractInterpreter::BasicType_as_index(BasicType type) { | |
276 int i = 0; | |
277 switch (type) { | |
278 case T_BOOLEAN: i = 0; break; | |
279 case T_CHAR : i = 1; break; | |
280 case T_BYTE : i = 2; break; | |
281 case T_SHORT : i = 3; break; | |
282 case T_INT : // fall through | |
283 case T_LONG : // fall through | |
284 case T_VOID : i = 4; break; | |
285 case T_FLOAT : i = 5; break; // have to treat float and double separately for SSE | |
286 case T_DOUBLE : i = 6; break; | |
287 case T_OBJECT : // fall through | |
288 case T_ARRAY : i = 7; break; | |
289 default : ShouldNotReachHere(); | |
290 } | |
291 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds"); | |
292 return i; | |
293 } | |
294 | |
295 | |
296 address TemplateInterpreterGenerator::generate_result_handler_for(BasicType type) { | |
297 address entry = __ pc(); | |
298 switch (type) { | |
299 case T_BOOLEAN: __ c2bool(rax); break; | |
304 | 300 case T_CHAR : __ andptr(rax, 0xFFFF); break; |
0 | 301 case T_BYTE : __ sign_extend_byte (rax); break; |
302 case T_SHORT : __ sign_extend_short(rax); break; | |
303 case T_INT : /* nothing to do */ break; | |
304 case T_DOUBLE : | |
305 case T_FLOAT : | |
306 { const Register t = InterpreterRuntime::SignatureHandlerGenerator::temp(); | |
304 | 307 __ pop(t); // remove return address first |
0 | 308 // Must return a result for interpreter or compiler. In SSE |
309 // mode, results are returned in xmm0 and the FPU stack must | |
310 // be empty. | |
311 if (type == T_FLOAT && UseSSE >= 1) { | |
312 // Load ST0 | |
313 __ fld_d(Address(rsp, 0)); | |
314 // Store as float and empty fpu stack | |
315 __ fstp_s(Address(rsp, 0)); | |
316 // and reload | |
317 __ movflt(xmm0, Address(rsp, 0)); | |
318 } else if (type == T_DOUBLE && UseSSE >= 2 ) { | |
319 __ movdbl(xmm0, Address(rsp, 0)); | |
320 } else { | |
321 // restore ST0 | |
322 __ fld_d(Address(rsp, 0)); | |
323 } | |
324 // and pop the temp | |
304 | 325 __ addptr(rsp, 2 * wordSize); |
326 __ push(t); // restore return address | |
0 | 327 } |
328 break; | |
329 case T_OBJECT : | |
330 // retrieve result from frame | |
304 | 331 __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); |
0 | 332 // and verify it |
333 __ verify_oop(rax); | |
334 break; | |
335 default : ShouldNotReachHere(); | |
336 } | |
337 __ ret(0); // return from result handler | |
338 return entry; | |
339 } | |
340 | |
341 address TemplateInterpreterGenerator::generate_safept_entry_for(TosState state, address runtime_entry) { | |
342 address entry = __ pc(); | |
343 __ push(state); | |
344 __ call_VM(noreg, runtime_entry); | |
345 __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); | |
346 return entry; | |
347 } | |
348 | |
349 | |
350 // Helpers for commoning out cases in the various type of method entries. | |
351 // | |
352 | |
353 // increment invocation count & check for overflow | |
354 // | |
355 // Note: checking for negative value instead of overflow | |
356 // so we have a 'sticky' overflow test | |
357 // | |
358 // rbx,: method | |
359 // rcx: invocation counter | |
360 // | |
361 void InterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) { | |
1783 | 362 const Address invocation_counter(rbx, in_bytes(methodOopDesc::invocation_counter_offset()) + |
363 in_bytes(InvocationCounter::counter_offset())); | |
364 // Note: In tiered we increment either counters in methodOop or in MDO depending if we're profiling or not. | |
365 if (TieredCompilation) { | |
366 int increment = InvocationCounter::count_increment; | |
367 int mask = ((1 << Tier0InvokeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
368 Label no_mdo, done; | |
369 if (ProfileInterpreter) { | |
370 // Are we profiling? | |
371 __ movptr(rax, Address(rbx, methodOopDesc::method_data_offset())); | |
372 __ testptr(rax, rax); | |
373 __ jccb(Assembler::zero, no_mdo); | |
374 // Increment counter in the MDO | |
375 const Address mdo_invocation_counter(rax, in_bytes(methodDataOopDesc::invocation_counter_offset()) + | |
376 in_bytes(InvocationCounter::counter_offset())); | |
377 __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rcx, false, Assembler::zero, overflow); | |
378 __ jmpb(done); | |
379 } | |
380 __ bind(no_mdo); | |
381 // Increment counter in methodOop (we don't need to load it, it's in rcx). | |
382 __ increment_mask_and_jump(invocation_counter, increment, mask, rcx, true, Assembler::zero, overflow); | |
383 __ bind(done); | |
384 } else { | |
385 const Address backedge_counter (rbx, methodOopDesc::backedge_counter_offset() + | |
386 InvocationCounter::counter_offset()); | |
0 | 387 |
1783 | 388 if (ProfileInterpreter) { // %%% Merge this into methodDataOop |
389 __ incrementl(Address(rbx,methodOopDesc::interpreter_invocation_counter_offset())); | |
390 } | |
391 // Update standard invocation counters | |
392 __ movl(rax, backedge_counter); // load backedge counter | |
393 | |
394 __ incrementl(rcx, InvocationCounter::count_increment); | |
395 __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits | |
396 | |
397 __ movl(invocation_counter, rcx); // save invocation count | |
398 __ addl(rcx, rax); // add both counters | |
0 | 399 |
1783 | 400 // profile_method is non-null only for interpreted method so |
401 // profile_method != NULL == !native_call | |
402 // BytecodeInterpreter only calls for native so code is elided. | |
403 | |
404 if (ProfileInterpreter && profile_method != NULL) { | |
405 // Test to see if we should create a method data oop | |
406 __ cmp32(rcx, | |
407 ExternalAddress((address)&InvocationCounter::InterpreterProfileLimit)); | |
408 __ jcc(Assembler::less, *profile_method_continue); | |
409 | |
410 // if no method data exists, go to profile_method | |
411 __ test_method_data_pointer(rax, *profile_method); | |
412 } | |
413 | |
0 | 414 __ cmp32(rcx, |
1783 | 415 ExternalAddress((address)&InvocationCounter::InterpreterInvocationLimit)); |
416 __ jcc(Assembler::aboveEqual, *overflow); | |
0 | 417 } |
418 } | |
419 | |
420 void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { | |
421 | |
422 // Asm interpreter on entry | |
423 // rdi - locals | |
424 // rsi - bcp | |
425 // rbx, - method | |
426 // rdx - cpool | |
427 // rbp, - interpreter frame | |
428 | |
429 // C++ interpreter on entry | |
430 // rsi - new interpreter state pointer | |
431 // rbp - interpreter frame pointer | |
432 // rbx - method | |
433 | |
434 // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] | |
435 // rbx, - method | |
436 // rcx - rcvr (assuming there is one) | |
437 // top of stack return address of interpreter caller | |
438 // rsp - sender_sp | |
439 | |
440 // C++ interpreter only | |
441 // rsi - previous interpreter state pointer | |
442 | |
443 const Address size_of_parameters(rbx, methodOopDesc::size_of_parameters_offset()); | |
444 | |
445 // InterpreterRuntime::frequency_counter_overflow takes one argument | |
446 // indicating if the counter overflow occurs at a backwards branch (non-NULL bcp). | |
447 // The call returns the address of the verified entry point for the method or NULL | |
448 // if the compilation did not complete (either went background or bailed out). | |
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449 __ movptr(rax, (intptr_t)false); |
0 | 450 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rax); |
451 | |
304 | 452 __ movptr(rbx, Address(rbp, method_offset)); // restore methodOop |
0 | 453 |
454 // Preserve invariant that rsi/rdi contain bcp/locals of sender frame | |
455 // and jump to the interpreted entry. | |
456 __ jmp(*do_continue, relocInfo::none); | |
457 | |
458 } | |
459 | |
460 void InterpreterGenerator::generate_stack_overflow_check(void) { | |
461 // see if we've got enough room on the stack for locals plus overhead. | |
462 // the expression stack grows down incrementally, so the normal guard | |
463 // page mechanism will work for that. | |
464 // | |
465 // Registers live on entry: | |
466 // | |
467 // Asm interpreter | |
468 // rdx: number of additional locals this frame needs (what we must check) | |
469 // rbx,: methodOop | |
470 | |
471 // destroyed on exit | |
472 // rax, | |
473 | |
474 // NOTE: since the additional locals are also always pushed (wasn't obvious in | |
475 // generate_method_entry) so the guard should work for them too. | |
476 // | |
477 | |
478 // monitor entry size: see picture of stack set (generate_method_entry) and frame_x86.hpp | |
479 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
480 | |
481 // total overhead size: entry_size + (saved rbp, thru expr stack bottom). | |
482 // be sure to change this if you add/subtract anything to/from the overhead area | |
483 const int overhead_size = -(frame::interpreter_frame_initial_sp_offset*wordSize) + entry_size; | |
484 | |
485 const int page_size = os::vm_page_size(); | |
486 | |
487 Label after_frame_check; | |
488 | |
489 // see if the frame is greater than one page in size. If so, | |
490 // then we need to verify there is enough stack space remaining | |
491 // for the additional locals. | |
1506 | 492 __ cmpl(rdx, (page_size - overhead_size)/Interpreter::stackElementSize); |
0 | 493 __ jcc(Assembler::belowEqual, after_frame_check); |
494 | |
495 // compute rsp as if this were going to be the last frame on | |
496 // the stack before the red zone | |
497 | |
498 Label after_frame_check_pop; | |
499 | |
304 | 500 __ push(rsi); |
0 | 501 |
502 const Register thread = rsi; | |
503 | |
504 __ get_thread(thread); | |
505 | |
506 const Address stack_base(thread, Thread::stack_base_offset()); | |
507 const Address stack_size(thread, Thread::stack_size_offset()); | |
508 | |
509 // locals + overhead, in bytes | |
304 | 510 __ lea(rax, Address(noreg, rdx, Interpreter::stackElementScale(), overhead_size)); |
0 | 511 |
512 #ifdef ASSERT | |
513 Label stack_base_okay, stack_size_okay; | |
514 // verify that thread stack base is non-zero | |
304 | 515 __ cmpptr(stack_base, (int32_t)NULL_WORD); |
0 | 516 __ jcc(Assembler::notEqual, stack_base_okay); |
517 __ stop("stack base is zero"); | |
518 __ bind(stack_base_okay); | |
519 // verify that thread stack size is non-zero | |
304 | 520 __ cmpptr(stack_size, 0); |
0 | 521 __ jcc(Assembler::notEqual, stack_size_okay); |
522 __ stop("stack size is zero"); | |
523 __ bind(stack_size_okay); | |
524 #endif | |
525 | |
526 // Add stack base to locals and subtract stack size | |
304 | 527 __ addptr(rax, stack_base); |
528 __ subptr(rax, stack_size); | |
0 | 529 |
530 // Use the maximum number of pages we might bang. | |
531 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : | |
532 (StackRedPages+StackYellowPages); | |
304 | 533 __ addptr(rax, max_pages * page_size); |
0 | 534 |
535 // check against the current stack bottom | |
304 | 536 __ cmpptr(rsp, rax); |
0 | 537 __ jcc(Assembler::above, after_frame_check_pop); |
538 | |
304 | 539 __ pop(rsi); // get saved bcp / (c++ prev state ). |
0 | 540 |
304 | 541 __ pop(rax); // get return address |
0 | 542 __ jump(ExternalAddress(Interpreter::throw_StackOverflowError_entry())); |
543 | |
544 // all done with frame size check | |
545 __ bind(after_frame_check_pop); | |
304 | 546 __ pop(rsi); |
0 | 547 |
548 __ bind(after_frame_check); | |
549 } | |
550 | |
551 // Allocate monitor and lock method (asm interpreter) | |
552 // rbx, - methodOop | |
553 // | |
554 void InterpreterGenerator::lock_method(void) { | |
555 // synchronize method | |
556 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
557 const Address monitor_block_top (rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
558 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
559 | |
560 #ifdef ASSERT | |
561 { Label L; | |
562 __ movl(rax, access_flags); | |
563 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
564 __ jcc(Assembler::notZero, L); | |
565 __ stop("method doesn't need synchronization"); | |
566 __ bind(L); | |
567 } | |
568 #endif // ASSERT | |
569 // get synchronization object | |
570 { Label done; | |
571 const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); | |
572 __ movl(rax, access_flags); | |
573 __ testl(rax, JVM_ACC_STATIC); | |
304 | 574 __ movptr(rax, Address(rdi, Interpreter::local_offset_in_bytes(0))); // get receiver (assume this is frequent case) |
0 | 575 __ jcc(Assembler::zero, done); |
304 | 576 __ movptr(rax, Address(rbx, methodOopDesc::constants_offset())); |
577 __ movptr(rax, Address(rax, constantPoolOopDesc::pool_holder_offset_in_bytes())); | |
578 __ movptr(rax, Address(rax, mirror_offset)); | |
0 | 579 __ bind(done); |
580 } | |
581 // add space for monitor & lock | |
304 | 582 __ subptr(rsp, entry_size); // add space for a monitor entry |
583 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
584 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); // store object | |
585 __ mov(rdx, rsp); // object address | |
0 | 586 __ lock_object(rdx); |
587 } | |
588 | |
589 // | |
590 // Generate a fixed interpreter frame. This is identical setup for interpreted methods | |
591 // and for native methods hence the shared code. | |
592 | |
593 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
594 // initialize fixed part of activation frame | |
304 | 595 __ push(rax); // save return address |
0 | 596 __ enter(); // save old & set new rbp, |
597 | |
598 | |
304 | 599 __ push(rsi); // set sender sp |
600 __ push((int32_t)NULL_WORD); // leave last_sp as null | |
601 __ movptr(rsi, Address(rbx,methodOopDesc::const_offset())); // get constMethodOop | |
602 __ lea(rsi, Address(rsi,constMethodOopDesc::codes_offset())); // get codebase | |
603 __ push(rbx); // save methodOop | |
0 | 604 if (ProfileInterpreter) { |
605 Label method_data_continue; | |
304 | 606 __ movptr(rdx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
607 __ testptr(rdx, rdx); | |
0 | 608 __ jcc(Assembler::zero, method_data_continue); |
304 | 609 __ addptr(rdx, in_bytes(methodDataOopDesc::data_offset())); |
0 | 610 __ bind(method_data_continue); |
304 | 611 __ push(rdx); // set the mdp (method data pointer) |
0 | 612 } else { |
304 | 613 __ push(0); |
0 | 614 } |
615 | |
304 | 616 __ movptr(rdx, Address(rbx, methodOopDesc::constants_offset())); |
617 __ movptr(rdx, Address(rdx, constantPoolOopDesc::cache_offset_in_bytes())); | |
618 __ push(rdx); // set constant pool cache | |
619 __ push(rdi); // set locals pointer | |
0 | 620 if (native_call) { |
304 | 621 __ push(0); // no bcp |
0 | 622 } else { |
304 | 623 __ push(rsi); // set bcp |
0 | 624 } |
304 | 625 __ push(0); // reserve word for pointer to expression stack bottom |
626 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
0 | 627 } |
628 | |
629 // End of helpers | |
630 | |
631 // | |
632 // Various method entries | |
633 //------------------------------------------------------------------------------------------------------------------------ | |
634 // | |
635 // | |
636 | |
637 // Call an accessor method (assuming it is resolved, otherwise drop into vanilla (slow path) entry | |
638 | |
639 address InterpreterGenerator::generate_accessor_entry(void) { | |
640 | |
641 // rbx,: methodOop | |
642 // rcx: receiver (preserve for slow entry into asm interpreter) | |
643 | |
644 // rsi: senderSP must preserved for slow path, set SP to it on fast path | |
645 | |
646 address entry_point = __ pc(); | |
647 Label xreturn_path; | |
648 | |
649 // do fastpath for resolved accessor methods | |
650 if (UseFastAccessorMethods) { | |
651 Label slow_path; | |
652 // If we need a safepoint check, generate full interpreter entry. | |
653 ExternalAddress state(SafepointSynchronize::address_of_state()); | |
654 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
655 SafepointSynchronize::_not_synchronized); | |
656 | |
657 __ jcc(Assembler::notEqual, slow_path); | |
658 // ASM/C++ Interpreter | |
659 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites thereof; parameter size = 1 | |
660 // Note: We can only use this code if the getfield has been resolved | |
661 // and if we don't have a null-pointer exception => check for | |
662 // these conditions first and use slow path if necessary. | |
663 // rbx,: method | |
664 // rcx: receiver | |
304 | 665 __ movptr(rax, Address(rsp, wordSize)); |
0 | 666 |
667 // check if local 0 != NULL and read field | |
304 | 668 __ testptr(rax, rax); |
0 | 669 __ jcc(Assembler::zero, slow_path); |
670 | |
304 | 671 __ movptr(rdi, Address(rbx, methodOopDesc::constants_offset())); |
0 | 672 // read first instruction word and extract bytecode @ 1 and index @ 2 |
304 | 673 __ movptr(rdx, Address(rbx, methodOopDesc::const_offset())); |
0 | 674 __ movl(rdx, Address(rdx, constMethodOopDesc::codes_offset())); |
675 // Shift codes right to get the index on the right. | |
676 // The bytecode fetched looks like <index><0xb4><0x2a> | |
677 __ shrl(rdx, 2*BitsPerByte); | |
678 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
304 | 679 __ movptr(rdi, Address(rdi, constantPoolOopDesc::cache_offset_in_bytes())); |
0 | 680 |
681 // rax,: local 0 | |
682 // rbx,: method | |
683 // rcx: receiver - do not destroy since it is needed for slow path! | |
684 // rcx: scratch | |
685 // rdx: constant pool cache index | |
686 // rdi: constant pool cache | |
687 // rsi: sender sp | |
688 | |
689 // check if getfield has been resolved and read constant pool cache entry | |
690 // check the validity of the cache entry by testing whether _indices field | |
691 // contains Bytecode::_getfield in b1 byte. | |
692 assert(in_words(ConstantPoolCacheEntry::size()) == 4, "adjust shift below"); | |
693 __ movl(rcx, | |
694 Address(rdi, | |
695 rdx, | |
304 | 696 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::indices_offset())); |
0 | 697 __ shrl(rcx, 2*BitsPerByte); |
698 __ andl(rcx, 0xFF); | |
699 __ cmpl(rcx, Bytecodes::_getfield); | |
700 __ jcc(Assembler::notEqual, slow_path); | |
701 | |
702 // Note: constant pool entry is not valid before bytecode is resolved | |
304 | 703 __ movptr(rcx, |
704 Address(rdi, | |
705 rdx, | |
706 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f2_offset())); | |
0 | 707 __ movl(rdx, |
708 Address(rdi, | |
709 rdx, | |
304 | 710 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::flags_offset())); |
0 | 711 |
712 Label notByte, notShort, notChar; | |
713 const Address field_address (rax, rcx, Address::times_1); | |
714 | |
715 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
716 // because they are different sizes. | |
717 // Use the type from the constant pool cache | |
718 __ shrl(rdx, ConstantPoolCacheEntry::tosBits); | |
719 // Make sure we don't need to mask rdx for tosBits after the above shift | |
720 ConstantPoolCacheEntry::verify_tosBits(); | |
721 __ cmpl(rdx, btos); | |
722 __ jcc(Assembler::notEqual, notByte); | |
723 __ load_signed_byte(rax, field_address); | |
724 __ jmp(xreturn_path); | |
725 | |
726 __ bind(notByte); | |
727 __ cmpl(rdx, stos); | |
728 __ jcc(Assembler::notEqual, notShort); | |
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729 __ load_signed_short(rax, field_address); |
0 | 730 __ jmp(xreturn_path); |
731 | |
732 __ bind(notShort); | |
733 __ cmpl(rdx, ctos); | |
734 __ jcc(Assembler::notEqual, notChar); | |
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735 __ load_unsigned_short(rax, field_address); |
0 | 736 __ jmp(xreturn_path); |
737 | |
738 __ bind(notChar); | |
739 #ifdef ASSERT | |
740 Label okay; | |
741 __ cmpl(rdx, atos); | |
742 __ jcc(Assembler::equal, okay); | |
743 __ cmpl(rdx, itos); | |
744 __ jcc(Assembler::equal, okay); | |
745 __ stop("what type is this?"); | |
746 __ bind(okay); | |
747 #endif // ASSERT | |
748 // All the rest are a 32 bit wordsize | |
304 | 749 // This is ok for now. Since fast accessors should be going away |
750 __ movptr(rax, field_address); | |
0 | 751 |
752 __ bind(xreturn_path); | |
753 | |
754 // _ireturn/_areturn | |
304 | 755 __ pop(rdi); // get return address |
756 __ mov(rsp, rsi); // set sp to sender sp | |
0 | 757 __ jmp(rdi); |
758 | |
759 // generate a vanilla interpreter entry as the slow path | |
760 __ bind(slow_path); | |
761 | |
762 (void) generate_normal_entry(false); | |
763 return entry_point; | |
764 } | |
765 return NULL; | |
766 | |
767 } | |
768 | |
769 // | |
770 // Interpreter stub for calling a native method. (asm interpreter) | |
771 // This sets up a somewhat different looking stack for calling the native method | |
772 // than the typical interpreter frame setup. | |
773 // | |
774 | |
775 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
776 // determine code generation flags | |
777 bool inc_counter = UseCompiler || CountCompiledCalls; | |
778 | |
779 // rbx,: methodOop | |
780 // rsi: sender sp | |
781 // rsi: previous interpreter state (C++ interpreter) must preserve | |
782 address entry_point = __ pc(); | |
783 | |
784 | |
785 const Address size_of_parameters(rbx, methodOopDesc::size_of_parameters_offset()); | |
786 const Address invocation_counter(rbx, methodOopDesc::invocation_counter_offset() + InvocationCounter::counter_offset()); | |
787 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
788 | |
789 // get parameter size (always needed) | |
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790 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 791 |
792 // native calls don't need the stack size check since they have no expression stack | |
793 // and the arguments are already on the stack and we only add a handful of words | |
794 // to the stack | |
795 | |
796 // rbx,: methodOop | |
797 // rcx: size of parameters | |
798 // rsi: sender sp | |
799 | |
304 | 800 __ pop(rax); // get return address |
0 | 801 // for natives the size of locals is zero |
802 | |
803 // compute beginning of parameters (rdi) | |
304 | 804 __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); |
0 | 805 |
806 | |
807 // add 2 zero-initialized slots for native calls | |
808 // NULL result handler | |
304 | 809 __ push((int32_t)NULL_WORD); |
0 | 810 // NULL oop temp (mirror or jni oop result) |
304 | 811 __ push((int32_t)NULL_WORD); |
0 | 812 |
813 if (inc_counter) __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
814 // initialize fixed part of activation frame | |
815 | |
816 generate_fixed_frame(true); | |
817 | |
818 // make sure method is native & not abstract | |
819 #ifdef ASSERT | |
820 __ movl(rax, access_flags); | |
821 { | |
822 Label L; | |
823 __ testl(rax, JVM_ACC_NATIVE); | |
824 __ jcc(Assembler::notZero, L); | |
825 __ stop("tried to execute non-native method as native"); | |
826 __ bind(L); | |
827 } | |
828 { Label L; | |
829 __ testl(rax, JVM_ACC_ABSTRACT); | |
830 __ jcc(Assembler::zero, L); | |
831 __ stop("tried to execute abstract method in interpreter"); | |
832 __ bind(L); | |
833 } | |
834 #endif | |
835 | |
836 // Since at this point in the method invocation the exception handler | |
837 // would try to exit the monitor of synchronized methods which hasn't | |
838 // been entered yet, we set the thread local variable | |
839 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
840 // check this flag. | |
841 | |
842 __ get_thread(rax); | |
843 const Address do_not_unlock_if_synchronized(rax, | |
844 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
845 __ movbool(do_not_unlock_if_synchronized, true); | |
846 | |
847 // increment invocation count & check for overflow | |
848 Label invocation_counter_overflow; | |
849 if (inc_counter) { | |
850 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
851 } | |
852 | |
853 Label continue_after_compile; | |
854 __ bind(continue_after_compile); | |
855 | |
856 bang_stack_shadow_pages(true); | |
857 | |
858 // reset the _do_not_unlock_if_synchronized flag | |
859 __ get_thread(rax); | |
860 __ movbool(do_not_unlock_if_synchronized, false); | |
861 | |
862 // check for synchronized methods | |
863 // Must happen AFTER invocation_counter check and stack overflow check, | |
864 // so method is not locked if overflows. | |
865 // | |
866 if (synchronized) { | |
867 lock_method(); | |
868 } else { | |
869 // no synchronization necessary | |
870 #ifdef ASSERT | |
871 { Label L; | |
872 __ movl(rax, access_flags); | |
873 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
874 __ jcc(Assembler::zero, L); | |
875 __ stop("method needs synchronization"); | |
876 __ bind(L); | |
877 } | |
878 #endif | |
879 } | |
880 | |
881 // start execution | |
882 #ifdef ASSERT | |
883 { Label L; | |
884 const Address monitor_block_top (rbp, | |
885 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 886 __ movptr(rax, monitor_block_top); |
887 __ cmpptr(rax, rsp); | |
0 | 888 __ jcc(Assembler::equal, L); |
889 __ stop("broken stack frame setup in interpreter"); | |
890 __ bind(L); | |
891 } | |
892 #endif | |
893 | |
894 // jvmti/dtrace support | |
895 __ notify_method_entry(); | |
896 | |
897 // work registers | |
898 const Register method = rbx; | |
899 const Register thread = rdi; | |
900 const Register t = rcx; | |
901 | |
902 // allocate space for parameters | |
903 __ get_method(method); | |
904 __ verify_oop(method); | |
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905 __ load_unsigned_short(t, Address(method, methodOopDesc::size_of_parameters_offset())); |
1506 | 906 __ shlptr(t, Interpreter::logStackElementSize); |
304 | 907 __ addptr(t, 2*wordSize); // allocate two more slots for JNIEnv and possible mirror |
908 __ subptr(rsp, t); | |
909 __ andptr(rsp, -(StackAlignmentInBytes)); // gcc needs 16 byte aligned stacks to do XMM intrinsics | |
0 | 910 |
911 // get signature handler | |
912 { Label L; | |
304 | 913 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
914 __ testptr(t, t); | |
0 | 915 __ jcc(Assembler::notZero, L); |
916 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); | |
917 __ get_method(method); | |
304 | 918 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
0 | 919 __ bind(L); |
920 } | |
921 | |
922 // call signature handler | |
923 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == rdi, "adjust this code"); | |
924 assert(InterpreterRuntime::SignatureHandlerGenerator::to () == rsp, "adjust this code"); | |
925 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == t , "adjust this code"); | |
926 // The generated handlers do not touch RBX (the method oop). | |
927 // However, large signatures cannot be cached and are generated | |
928 // each time here. The slow-path generator will blow RBX | |
929 // sometime, so we must reload it after the call. | |
930 __ call(t); | |
931 __ get_method(method); // slow path call blows RBX on DevStudio 5.0 | |
932 | |
933 // result handler is in rax, | |
934 // set result handler | |
304 | 935 __ movptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), rax); |
0 | 936 |
937 // pass mirror handle if static call | |
938 { Label L; | |
939 const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); | |
940 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); | |
941 __ testl(t, JVM_ACC_STATIC); | |
942 __ jcc(Assembler::zero, L); | |
943 // get mirror | |
304 | 944 __ movptr(t, Address(method, methodOopDesc:: constants_offset())); |
945 __ movptr(t, Address(t, constantPoolOopDesc::pool_holder_offset_in_bytes())); | |
946 __ movptr(t, Address(t, mirror_offset)); | |
0 | 947 // copy mirror into activation frame |
304 | 948 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), t); |
0 | 949 // pass handle to mirror |
304 | 950 __ lea(t, Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); |
951 __ movptr(Address(rsp, wordSize), t); | |
0 | 952 __ bind(L); |
953 } | |
954 | |
955 // get native function entry point | |
956 { Label L; | |
304 | 957 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
0 | 958 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
304 | 959 __ cmpptr(rax, unsatisfied.addr()); |
0 | 960 __ jcc(Assembler::notEqual, L); |
961 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); | |
962 __ get_method(method); | |
963 __ verify_oop(method); | |
304 | 964 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
0 | 965 __ bind(L); |
966 } | |
967 | |
968 // pass JNIEnv | |
969 __ get_thread(thread); | |
304 | 970 __ lea(t, Address(thread, JavaThread::jni_environment_offset())); |
971 __ movptr(Address(rsp, 0), t); | |
0 | 972 |
973 // set_last_Java_frame_before_call | |
974 // It is enough that the pc() | |
975 // points into the right code segment. It does not have to be the correct return pc. | |
976 __ set_last_Java_frame(thread, noreg, rbp, __ pc()); | |
977 | |
978 // change thread state | |
979 #ifdef ASSERT | |
980 { Label L; | |
981 __ movl(t, Address(thread, JavaThread::thread_state_offset())); | |
982 __ cmpl(t, _thread_in_Java); | |
983 __ jcc(Assembler::equal, L); | |
984 __ stop("Wrong thread state in native stub"); | |
985 __ bind(L); | |
986 } | |
987 #endif | |
988 | |
989 // Change state to native | |
990 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native); | |
991 __ call(rax); | |
992 | |
993 // result potentially in rdx:rax or ST0 | |
994 | |
995 // Either restore the MXCSR register after returning from the JNI Call | |
996 // or verify that it wasn't changed. | |
997 if (VM_Version::supports_sse()) { | |
998 if (RestoreMXCSROnJNICalls) { | |
999 __ ldmxcsr(ExternalAddress(StubRoutines::addr_mxcsr_std())); | |
1000 } | |
1001 else if (CheckJNICalls ) { | |
304 | 1002 __ call(RuntimeAddress(StubRoutines::x86::verify_mxcsr_entry())); |
0 | 1003 } |
1004 } | |
1005 | |
1006 // Either restore the x87 floating pointer control word after returning | |
1007 // from the JNI call or verify that it wasn't changed. | |
1008 if (CheckJNICalls) { | |
304 | 1009 __ call(RuntimeAddress(StubRoutines::x86::verify_fpu_cntrl_wrd_entry())); |
0 | 1010 } |
1011 | |
1012 // save potential result in ST(0) & rdx:rax | |
1013 // (if result handler is the T_FLOAT or T_DOUBLE handler, result must be in ST0 - | |
1014 // the check is necessary to avoid potential Intel FPU overflow problems by saving/restoring 'empty' FPU registers) | |
1015 // It is safe to do this push because state is _thread_in_native and return address will be found | |
1016 // via _last_native_pc and not via _last_jave_sp | |
1017 | |
1018 // NOTE: the order of theses push(es) is known to frame::interpreter_frame_result. | |
1019 // If the order changes or anything else is added to the stack the code in | |
1020 // interpreter_frame_result will have to be changed. | |
1021 | |
1022 { Label L; | |
1023 Label push_double; | |
1024 ExternalAddress float_handler(AbstractInterpreter::result_handler(T_FLOAT)); | |
1025 ExternalAddress double_handler(AbstractInterpreter::result_handler(T_DOUBLE)); | |
1026 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), | |
1027 float_handler.addr()); | |
1028 __ jcc(Assembler::equal, push_double); | |
1029 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), | |
1030 double_handler.addr()); | |
1031 __ jcc(Assembler::notEqual, L); | |
1032 __ bind(push_double); | |
1033 __ push(dtos); | |
1034 __ bind(L); | |
1035 } | |
1036 __ push(ltos); | |
1037 | |
1038 // change thread state | |
1039 __ get_thread(thread); | |
1040 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native_trans); | |
1041 if(os::is_MP()) { | |
1042 if (UseMembar) { | |
304 | 1043 // Force this write out before the read below |
1044 __ membar(Assembler::Membar_mask_bits( | |
1045 Assembler::LoadLoad | Assembler::LoadStore | | |
1046 Assembler::StoreLoad | Assembler::StoreStore)); | |
0 | 1047 } else { |
1048 // Write serialization page so VM thread can do a pseudo remote membar. | |
1049 // We use the current thread pointer to calculate a thread specific | |
1050 // offset to write to within the page. This minimizes bus traffic | |
1051 // due to cache line collision. | |
1052 __ serialize_memory(thread, rcx); | |
1053 } | |
1054 } | |
1055 | |
1056 if (AlwaysRestoreFPU) { | |
1057 // Make sure the control word is correct. | |
1058 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); | |
1059 } | |
1060 | |
1061 // check for safepoint operation in progress and/or pending suspend requests | |
1062 { Label Continue; | |
1063 | |
1064 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
1065 SafepointSynchronize::_not_synchronized); | |
1066 | |
1067 Label L; | |
1068 __ jcc(Assembler::notEqual, L); | |
1069 __ cmpl(Address(thread, JavaThread::suspend_flags_offset()), 0); | |
1070 __ jcc(Assembler::equal, Continue); | |
1071 __ bind(L); | |
1072 | |
1073 // Don't use call_VM as it will see a possible pending exception and forward it | |
1074 // and never return here preventing us from clearing _last_native_pc down below. | |
1075 // Also can't use call_VM_leaf either as it will check to see if rsi & rdi are | |
1076 // preserved and correspond to the bcp/locals pointers. So we do a runtime call | |
1077 // by hand. | |
1078 // | |
304 | 1079 __ push(thread); |
0 | 1080 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, |
1081 JavaThread::check_special_condition_for_native_trans))); | |
1082 __ increment(rsp, wordSize); | |
1083 __ get_thread(thread); | |
1084 | |
1085 __ bind(Continue); | |
1086 } | |
1087 | |
1088 // change thread state | |
1089 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
1090 | |
1091 __ reset_last_Java_frame(thread, true, true); | |
1092 | |
1093 // reset handle block | |
304 | 1094 __ movptr(t, Address(thread, JavaThread::active_handles_offset())); |
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1095 __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), NULL_WORD); |
0 | 1096 |
1097 // If result was an oop then unbox and save it in the frame | |
1098 { Label L; | |
1099 Label no_oop, store_result; | |
1100 ExternalAddress handler(AbstractInterpreter::result_handler(T_OBJECT)); | |
1101 __ cmpptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), | |
1102 handler.addr()); | |
1103 __ jcc(Assembler::notEqual, no_oop); | |
304 | 1104 __ cmpptr(Address(rsp, 0), (int32_t)NULL_WORD); |
0 | 1105 __ pop(ltos); |
304 | 1106 __ testptr(rax, rax); |
0 | 1107 __ jcc(Assembler::zero, store_result); |
1108 // unbox | |
304 | 1109 __ movptr(rax, Address(rax, 0)); |
0 | 1110 __ bind(store_result); |
304 | 1111 __ movptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset)*wordSize), rax); |
0 | 1112 // keep stack depth as expected by pushing oop which will eventually be discarded |
1113 __ push(ltos); | |
1114 __ bind(no_oop); | |
1115 } | |
1116 | |
1117 { | |
1118 Label no_reguard; | |
1119 __ cmpl(Address(thread, JavaThread::stack_guard_state_offset()), JavaThread::stack_guard_yellow_disabled); | |
1120 __ jcc(Assembler::notEqual, no_reguard); | |
1121 | |
304 | 1122 __ pusha(); |
0 | 1123 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
304 | 1124 __ popa(); |
0 | 1125 |
1126 __ bind(no_reguard); | |
1127 } | |
1128 | |
1129 // restore rsi to have legal interpreter frame, | |
1130 // i.e., bci == 0 <=> rsi == code_base() | |
1131 // Can't call_VM until bcp is within reasonable. | |
1132 __ get_method(method); // method is junk from thread_in_native to now. | |
1133 __ verify_oop(method); | |
304 | 1134 __ movptr(rsi, Address(method,methodOopDesc::const_offset())); // get constMethodOop |
1135 __ lea(rsi, Address(rsi,constMethodOopDesc::codes_offset())); // get codebase | |
0 | 1136 |
1137 // handle exceptions (exception handling will handle unlocking!) | |
1138 { Label L; | |
304 | 1139 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
0 | 1140 __ jcc(Assembler::zero, L); |
1141 // Note: At some point we may want to unify this with the code used in call_VM_base(); | |
1142 // i.e., we should use the StubRoutines::forward_exception code. For now this | |
1143 // doesn't work here because the rsp is not correctly set at this point. | |
1144 __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); | |
1145 __ should_not_reach_here(); | |
1146 __ bind(L); | |
1147 } | |
1148 | |
1149 // do unlocking if necessary | |
1150 { Label L; | |
1151 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); | |
1152 __ testl(t, JVM_ACC_SYNCHRONIZED); | |
1153 __ jcc(Assembler::zero, L); | |
1154 // the code below should be shared with interpreter macro assembler implementation | |
1155 { Label unlock; | |
1156 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
1157 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
1158 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
1159 | |
304 | 1160 __ lea(rdx, monitor); // address of first monitor |
0 | 1161 |
304 | 1162 __ movptr(t, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
1163 __ testptr(t, t); | |
0 | 1164 __ jcc(Assembler::notZero, unlock); |
1165 | |
1166 // Entry already unlocked, need to throw exception | |
1167 __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
1168 __ should_not_reach_here(); | |
1169 | |
1170 __ bind(unlock); | |
1171 __ unlock_object(rdx); | |
1172 } | |
1173 __ bind(L); | |
1174 } | |
1175 | |
1176 // jvmti/dtrace support | |
1177 // Note: This must happen _after_ handling/throwing any exceptions since | |
1178 // the exception handler code notifies the runtime of method exits | |
1179 // too. If this happens before, method entry/exit notifications are | |
1180 // not properly paired (was bug - gri 11/22/99). | |
1181 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
1182 | |
1183 // restore potential result in rdx:rax, call result handler to restore potential result in ST0 & handle result | |
1184 __ pop(ltos); | |
304 | 1185 __ movptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
0 | 1186 __ call(t); |
1187 | |
1188 // remove activation | |
304 | 1189 __ movptr(t, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 1190 __ leave(); // remove frame anchor |
304 | 1191 __ pop(rdi); // get return address |
1192 __ mov(rsp, t); // set sp to sender sp | |
0 | 1193 __ jmp(rdi); |
1194 | |
1195 if (inc_counter) { | |
1196 // Handle overflow of counter and compile method | |
1197 __ bind(invocation_counter_overflow); | |
1198 generate_counter_overflow(&continue_after_compile); | |
1199 } | |
1200 | |
1201 return entry_point; | |
1202 } | |
1203 | |
1204 // | |
1205 // Generic interpreted method entry to (asm) interpreter | |
1206 // | |
1207 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
1208 // determine code generation flags | |
1209 bool inc_counter = UseCompiler || CountCompiledCalls; | |
1210 | |
1211 // rbx,: methodOop | |
1212 // rsi: sender sp | |
1213 address entry_point = __ pc(); | |
1214 | |
1215 | |
1216 const Address size_of_parameters(rbx, methodOopDesc::size_of_parameters_offset()); | |
1217 const Address size_of_locals (rbx, methodOopDesc::size_of_locals_offset()); | |
1218 const Address invocation_counter(rbx, methodOopDesc::invocation_counter_offset() + InvocationCounter::counter_offset()); | |
1219 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
1220 | |
1221 // get parameter size (always needed) | |
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1222 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 1223 |
1224 // rbx,: methodOop | |
1225 // rcx: size of parameters | |
1226 | |
1227 // rsi: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
1228 | |
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1229 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
0 | 1230 __ subl(rdx, rcx); // rdx = no. of additional locals |
1231 | |
1232 // see if we've got enough room on the stack for locals plus overhead. | |
1233 generate_stack_overflow_check(); | |
1234 | |
1235 // get return address | |
304 | 1236 __ pop(rax); |
0 | 1237 |
1238 // compute beginning of parameters (rdi) | |
304 | 1239 __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); |
0 | 1240 |
1241 // rdx - # of additional locals | |
1242 // allocate space for locals | |
1243 // explicitly initialize locals | |
1244 { | |
1245 Label exit, loop; | |
1246 __ testl(rdx, rdx); | |
1247 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 | |
1248 __ bind(loop); | |
304 | 1249 __ push((int32_t)NULL_WORD); // initialize local variables |
0 | 1250 __ decrement(rdx); // until everything initialized |
1251 __ jcc(Assembler::greater, loop); | |
1252 __ bind(exit); | |
1253 } | |
1254 | |
1255 if (inc_counter) __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
1256 // initialize fixed part of activation frame | |
1257 generate_fixed_frame(false); | |
1258 | |
1259 // make sure method is not native & not abstract | |
1260 #ifdef ASSERT | |
1261 __ movl(rax, access_flags); | |
1262 { | |
1263 Label L; | |
1264 __ testl(rax, JVM_ACC_NATIVE); | |
1265 __ jcc(Assembler::zero, L); | |
1266 __ stop("tried to execute native method as non-native"); | |
1267 __ bind(L); | |
1268 } | |
1269 { Label L; | |
1270 __ testl(rax, JVM_ACC_ABSTRACT); | |
1271 __ jcc(Assembler::zero, L); | |
1272 __ stop("tried to execute abstract method in interpreter"); | |
1273 __ bind(L); | |
1274 } | |
1275 #endif | |
1276 | |
1277 // Since at this point in the method invocation the exception handler | |
1278 // would try to exit the monitor of synchronized methods which hasn't | |
1279 // been entered yet, we set the thread local variable | |
1280 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
1281 // check this flag. | |
1282 | |
1283 __ get_thread(rax); | |
1284 const Address do_not_unlock_if_synchronized(rax, | |
1285 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
1286 __ movbool(do_not_unlock_if_synchronized, true); | |
1287 | |
1288 // increment invocation count & check for overflow | |
1289 Label invocation_counter_overflow; | |
1290 Label profile_method; | |
1291 Label profile_method_continue; | |
1292 if (inc_counter) { | |
1293 generate_counter_incr(&invocation_counter_overflow, &profile_method, &profile_method_continue); | |
1294 if (ProfileInterpreter) { | |
1295 __ bind(profile_method_continue); | |
1296 } | |
1297 } | |
1298 Label continue_after_compile; | |
1299 __ bind(continue_after_compile); | |
1300 | |
1301 bang_stack_shadow_pages(false); | |
1302 | |
1303 // reset the _do_not_unlock_if_synchronized flag | |
1304 __ get_thread(rax); | |
1305 __ movbool(do_not_unlock_if_synchronized, false); | |
1306 | |
1307 // check for synchronized methods | |
1308 // Must happen AFTER invocation_counter check and stack overflow check, | |
1309 // so method is not locked if overflows. | |
1310 // | |
1311 if (synchronized) { | |
1312 // Allocate monitor and lock method | |
1313 lock_method(); | |
1314 } else { | |
1315 // no synchronization necessary | |
1316 #ifdef ASSERT | |
1317 { Label L; | |
1318 __ movl(rax, access_flags); | |
1319 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
1320 __ jcc(Assembler::zero, L); | |
1321 __ stop("method needs synchronization"); | |
1322 __ bind(L); | |
1323 } | |
1324 #endif | |
1325 } | |
1326 | |
1327 // start execution | |
1328 #ifdef ASSERT | |
1329 { Label L; | |
1330 const Address monitor_block_top (rbp, | |
1331 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 1332 __ movptr(rax, monitor_block_top); |
1333 __ cmpptr(rax, rsp); | |
0 | 1334 __ jcc(Assembler::equal, L); |
1335 __ stop("broken stack frame setup in interpreter"); | |
1336 __ bind(L); | |
1337 } | |
1338 #endif | |
1339 | |
1340 // jvmti support | |
1341 __ notify_method_entry(); | |
1342 | |
1343 __ dispatch_next(vtos); | |
1344 | |
1345 // invocation counter overflow | |
1346 if (inc_counter) { | |
1347 if (ProfileInterpreter) { | |
1348 // We have decided to profile this method in the interpreter | |
1349 __ bind(profile_method); | |
1350 | |
1351 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method), rsi, true); | |
1352 | |
304 | 1353 __ movptr(rbx, Address(rbp, method_offset)); // restore methodOop |
1354 __ movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); | |
1355 __ movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); | |
0 | 1356 __ test_method_data_pointer(rax, profile_method_continue); |
304 | 1357 __ addptr(rax, in_bytes(methodDataOopDesc::data_offset())); |
1358 __ movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); | |
0 | 1359 __ jmp(profile_method_continue); |
1360 } | |
1361 // Handle overflow of counter and compile method | |
1362 __ bind(invocation_counter_overflow); | |
1363 generate_counter_overflow(&continue_after_compile); | |
1364 } | |
1365 | |
1366 return entry_point; | |
1367 } | |
1368 | |
1369 //------------------------------------------------------------------------------------------------------------------------ | |
1370 // Entry points | |
1371 // | |
1372 // Here we generate the various kind of entries into the interpreter. | |
1373 // The two main entry type are generic bytecode methods and native call method. | |
1374 // These both come in synchronized and non-synchronized versions but the | |
1375 // frame layout they create is very similar. The other method entry | |
1376 // types are really just special purpose entries that are really entry | |
1377 // and interpretation all in one. These are for trivial methods like | |
1378 // accessor, empty, or special math methods. | |
1379 // | |
1380 // When control flow reaches any of the entry types for the interpreter | |
1381 // the following holds -> | |
1382 // | |
1383 // Arguments: | |
1384 // | |
1385 // rbx,: methodOop | |
1386 // rcx: receiver | |
1387 // | |
1388 // | |
1389 // Stack layout immediately at entry | |
1390 // | |
1391 // [ return address ] <--- rsp | |
1392 // [ parameter n ] | |
1393 // ... | |
1394 // [ parameter 1 ] | |
1395 // [ expression stack ] (caller's java expression stack) | |
1396 | |
1397 // Assuming that we don't go to one of the trivial specialized | |
1398 // entries the stack will look like below when we are ready to execute | |
1399 // the first bytecode (or call the native routine). The register usage | |
1400 // will be as the template based interpreter expects (see interpreter_x86.hpp). | |
1401 // | |
1402 // local variables follow incoming parameters immediately; i.e. | |
1403 // the return address is moved to the end of the locals). | |
1404 // | |
1405 // [ monitor entry ] <--- rsp | |
1406 // ... | |
1407 // [ monitor entry ] | |
1408 // [ expr. stack bottom ] | |
1409 // [ saved rsi ] | |
1410 // [ current rdi ] | |
1411 // [ methodOop ] | |
1412 // [ saved rbp, ] <--- rbp, | |
1413 // [ return address ] | |
1414 // [ local variable m ] | |
1415 // ... | |
1416 // [ local variable 1 ] | |
1417 // [ parameter n ] | |
1418 // ... | |
1419 // [ parameter 1 ] <--- rdi | |
1420 | |
1421 address AbstractInterpreterGenerator::generate_method_entry(AbstractInterpreter::MethodKind kind) { | |
1422 // determine code generation flags | |
1423 bool synchronized = false; | |
1424 address entry_point = NULL; | |
1425 | |
1426 switch (kind) { | |
1427 case Interpreter::zerolocals : break; | |
1428 case Interpreter::zerolocals_synchronized: synchronized = true; break; | |
1429 case Interpreter::native : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(false); break; | |
1430 case Interpreter::native_synchronized : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(true); break; | |
1431 case Interpreter::empty : entry_point = ((InterpreterGenerator*)this)->generate_empty_entry(); break; | |
1432 case Interpreter::accessor : entry_point = ((InterpreterGenerator*)this)->generate_accessor_entry(); break; | |
1433 case Interpreter::abstract : entry_point = ((InterpreterGenerator*)this)->generate_abstract_entry(); break; | |
710 | 1434 case Interpreter::method_handle : entry_point = ((InterpreterGenerator*)this)->generate_method_handle_entry(); break; |
0 | 1435 |
1436 case Interpreter::java_lang_math_sin : // fall thru | |
1437 case Interpreter::java_lang_math_cos : // fall thru | |
1438 case Interpreter::java_lang_math_tan : // fall thru | |
1439 case Interpreter::java_lang_math_abs : // fall thru | |
1440 case Interpreter::java_lang_math_log : // fall thru | |
1441 case Interpreter::java_lang_math_log10 : // fall thru | |
1442 case Interpreter::java_lang_math_sqrt : entry_point = ((InterpreterGenerator*)this)->generate_math_entry(kind); break; | |
1443 default : ShouldNotReachHere(); break; | |
1444 } | |
1445 | |
1446 if (entry_point) return entry_point; | |
1447 | |
1448 return ((InterpreterGenerator*)this)->generate_normal_entry(synchronized); | |
1449 | |
1450 } | |
1451 | |
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1452 // These should never be compiled since the interpreter will prefer |
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1453 // the compiled version to the intrinsic version. |
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1454 bool AbstractInterpreter::can_be_compiled(methodHandle m) { |
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1455 switch (method_kind(m)) { |
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1456 case Interpreter::java_lang_math_sin : // fall thru |
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1457 case Interpreter::java_lang_math_cos : // fall thru |
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1458 case Interpreter::java_lang_math_tan : // fall thru |
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1459 case Interpreter::java_lang_math_abs : // fall thru |
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1460 case Interpreter::java_lang_math_log : // fall thru |
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1461 case Interpreter::java_lang_math_log10 : // fall thru |
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1462 case Interpreter::java_lang_math_sqrt : |
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1463 return false; |
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1464 default: |
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1465 return true; |
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1466 } |
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1467 } |
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1468 |
0 | 1469 // How much stack a method activation needs in words. |
1470 int AbstractInterpreter::size_top_interpreter_activation(methodOop method) { | |
1471 | |
1472 const int stub_code = 4; // see generate_call_stub | |
1473 // Save space for one monitor to get into the interpreted method in case | |
1474 // the method is synchronized | |
1475 int monitor_size = method->is_synchronized() ? | |
1476 1*frame::interpreter_frame_monitor_size() : 0; | |
1477 | |
1478 // total overhead size: entry_size + (saved rbp, thru expr stack bottom). | |
1479 // be sure to change this if you add/subtract anything to/from the overhead area | |
1480 const int overhead_size = -frame::interpreter_frame_initial_sp_offset; | |
1481 | |
710 | 1482 const int extra_stack = methodOopDesc::extra_stack_entries(); |
1483 const int method_stack = (method->max_locals() + method->max_stack() + extra_stack) * | |
1506 | 1484 Interpreter::stackElementWords; |
0 | 1485 return overhead_size + method_stack + stub_code; |
1486 } | |
1487 | |
1488 // asm based interpreter deoptimization helpers | |
1489 | |
1490 int AbstractInterpreter::layout_activation(methodOop method, | |
1491 int tempcount, | |
1492 int popframe_extra_args, | |
1493 int moncount, | |
1494 int callee_param_count, | |
1495 int callee_locals, | |
1496 frame* caller, | |
1497 frame* interpreter_frame, | |
1498 bool is_top_frame) { | |
1499 // Note: This calculation must exactly parallel the frame setup | |
1500 // in AbstractInterpreterGenerator::generate_method_entry. | |
1501 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
1502 // The frame interpreter_frame, if not NULL, is guaranteed to be the right size, | |
1503 // as determined by a previous call to this method. | |
1504 // It is also guaranteed to be walkable even though it is in a skeletal state | |
1505 // NOTE: return size is in words not bytes | |
1506 | |
1507 // fixed size of an interpreter frame: | |
1506 | 1508 int max_locals = method->max_locals() * Interpreter::stackElementWords; |
0 | 1509 int extra_locals = (method->max_locals() - method->size_of_parameters()) * |
1506 | 1510 Interpreter::stackElementWords; |
0 | 1511 |
1512 int overhead = frame::sender_sp_offset - frame::interpreter_frame_initial_sp_offset; | |
1513 | |
1514 // Our locals were accounted for by the caller (or last_frame_adjust on the transistion) | |
1515 // Since the callee parameters already account for the callee's params we only need to account for | |
1516 // the extra locals. | |
1517 | |
1518 | |
1519 int size = overhead + | |
1506 | 1520 ((callee_locals - callee_param_count)*Interpreter::stackElementWords) + |
0 | 1521 (moncount*frame::interpreter_frame_monitor_size()) + |
1506 | 1522 tempcount*Interpreter::stackElementWords + popframe_extra_args; |
0 | 1523 |
1524 if (interpreter_frame != NULL) { | |
1525 #ifdef ASSERT | |
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1526 if (!EnableMethodHandles) |
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1527 // @@@ FIXME: Should we correct interpreter_frame_sender_sp in the calling sequences? |
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1528 // Probably, since deoptimization doesn't work yet. |
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1529 assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable"); |
0 | 1530 assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)"); |
1531 #endif | |
1532 | |
1533 interpreter_frame->interpreter_frame_set_method(method); | |
1534 // NOTE the difference in using sender_sp and interpreter_frame_sender_sp | |
1535 // interpreter_frame_sender_sp is the original sp of the caller (the unextended_sp) | |
1536 // and sender_sp is fp+8 | |
1537 intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; | |
1538 | |
1539 interpreter_frame->interpreter_frame_set_locals(locals); | |
1540 BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); | |
1541 BasicObjectLock* monbot = montop - moncount; | |
1542 interpreter_frame->interpreter_frame_set_monitor_end(monbot); | |
1543 | |
1544 // Set last_sp | |
1545 intptr_t* rsp = (intptr_t*) monbot - | |
1506 | 1546 tempcount*Interpreter::stackElementWords - |
0 | 1547 popframe_extra_args; |
1548 interpreter_frame->interpreter_frame_set_last_sp(rsp); | |
1549 | |
1550 // All frames but the initial (oldest) interpreter frame we fill in have a | |
1551 // value for sender_sp that allows walking the stack but isn't | |
1552 // truly correct. Correct the value here. | |
1553 | |
1554 if (extra_locals != 0 && | |
1555 interpreter_frame->sender_sp() == interpreter_frame->interpreter_frame_sender_sp() ) { | |
1556 interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + extra_locals); | |
1557 } | |
1558 *interpreter_frame->interpreter_frame_cache_addr() = | |
1559 method->constants()->cache(); | |
1560 } | |
1561 return size; | |
1562 } | |
1563 | |
1564 | |
1565 //------------------------------------------------------------------------------------------------------------------------ | |
1566 // Exceptions | |
1567 | |
1568 void TemplateInterpreterGenerator::generate_throw_exception() { | |
1569 // Entry point in previous activation (i.e., if the caller was interpreted) | |
1570 Interpreter::_rethrow_exception_entry = __ pc(); | |
1295 | 1571 const Register thread = rcx; |
0 | 1572 |
1573 // Restore sp to interpreter_frame_last_sp even though we are going | |
1574 // to empty the expression stack for the exception processing. | |
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1575 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 1576 // rax,: exception |
1577 // rdx: return address/pc that threw exception | |
1578 __ restore_bcp(); // rsi points to call/send | |
1579 __ restore_locals(); | |
1580 | |
1581 // Entry point for exceptions thrown within interpreter code | |
1582 Interpreter::_throw_exception_entry = __ pc(); | |
1583 // expression stack is undefined here | |
1584 // rax,: exception | |
1585 // rsi: exception bcp | |
1586 __ verify_oop(rax); | |
1587 | |
1588 // expression stack must be empty before entering the VM in case of an exception | |
1589 __ empty_expression_stack(); | |
1590 __ empty_FPU_stack(); | |
1591 // find exception handler address and preserve exception oop | |
1592 __ call_VM(rdx, CAST_FROM_FN_PTR(address, InterpreterRuntime::exception_handler_for_exception), rax); | |
1593 // rax,: exception handler entry point | |
1594 // rdx: preserved exception oop | |
1595 // rsi: bcp for exception handler | |
1596 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
1597 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
1598 | |
1599 // If the exception is not handled in the current frame the frame is removed and | |
1600 // the exception is rethrown (i.e. exception continuation is _rethrow_exception). | |
1601 // | |
1602 // Note: At this point the bci is still the bxi for the instruction which caused | |
1603 // the exception and the expression stack is empty. Thus, for any VM calls | |
1604 // at this point, GC will find a legal oop map (with empty expression stack). | |
1605 | |
1606 // In current activation | |
1607 // tos: exception | |
1608 // rsi: exception bcp | |
1609 | |
1610 // | |
1611 // JVMTI PopFrame support | |
1612 // | |
1613 | |
1614 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
1615 __ empty_expression_stack(); | |
1616 __ empty_FPU_stack(); | |
1617 // Set the popframe_processing bit in pending_popframe_condition indicating that we are | |
1618 // currently handling popframe, so that call_VMs that may happen later do not trigger new | |
1619 // popframe handling cycles. | |
1295 | 1620 __ get_thread(thread); |
1621 __ movl(rdx, Address(thread, JavaThread::popframe_condition_offset())); | |
0 | 1622 __ orl(rdx, JavaThread::popframe_processing_bit); |
1295 | 1623 __ movl(Address(thread, JavaThread::popframe_condition_offset()), rdx); |
0 | 1624 |
1625 { | |
1626 // Check to see whether we are returning to a deoptimized frame. | |
1627 // (The PopFrame call ensures that the caller of the popped frame is | |
1628 // either interpreted or compiled and deoptimizes it if compiled.) | |
1629 // In this case, we can't call dispatch_next() after the frame is | |
1630 // popped, but instead must save the incoming arguments and restore | |
1631 // them after deoptimization has occurred. | |
1632 // | |
1633 // Note that we don't compare the return PC against the | |
1634 // deoptimization blob's unpack entry because of the presence of | |
1635 // adapter frames in C2. | |
1636 Label caller_not_deoptimized; | |
304 | 1637 __ movptr(rdx, Address(rbp, frame::return_addr_offset * wordSize)); |
0 | 1638 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::interpreter_contains), rdx); |
1639 __ testl(rax, rax); | |
1640 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
1641 | |
1642 // Compute size of arguments for saving when returning to deoptimized caller | |
1643 __ get_method(rax); | |
1644 __ verify_oop(rax); | |
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1645 __ load_unsigned_short(rax, Address(rax, in_bytes(methodOopDesc::size_of_parameters_offset()))); |
1506 | 1646 __ shlptr(rax, Interpreter::logStackElementSize); |
0 | 1647 __ restore_locals(); |
304 | 1648 __ subptr(rdi, rax); |
1649 __ addptr(rdi, wordSize); | |
0 | 1650 // Save these arguments |
1295 | 1651 __ get_thread(thread); |
1652 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::popframe_preserve_args), thread, rax, rdi); | |
0 | 1653 |
1654 __ remove_activation(vtos, rdx, | |
1655 /* throw_monitor_exception */ false, | |
1656 /* install_monitor_exception */ false, | |
1657 /* notify_jvmdi */ false); | |
1658 | |
1659 // Inform deoptimization that it is responsible for restoring these arguments | |
1295 | 1660 __ get_thread(thread); |
1661 __ movl(Address(thread, JavaThread::popframe_condition_offset()), JavaThread::popframe_force_deopt_reexecution_bit); | |
0 | 1662 |
1663 // Continue in deoptimization handler | |
1664 __ jmp(rdx); | |
1665 | |
1666 __ bind(caller_not_deoptimized); | |
1667 } | |
1668 | |
1669 __ remove_activation(vtos, rdx, | |
1670 /* throw_monitor_exception */ false, | |
1671 /* install_monitor_exception */ false, | |
1672 /* notify_jvmdi */ false); | |
1673 | |
1674 // Finish with popframe handling | |
1675 // A previous I2C followed by a deoptimization might have moved the | |
1676 // outgoing arguments further up the stack. PopFrame expects the | |
1677 // mutations to those outgoing arguments to be preserved and other | |
1678 // constraints basically require this frame to look exactly as | |
1679 // though it had previously invoked an interpreted activation with | |
1680 // no space between the top of the expression stack (current | |
1681 // last_sp) and the top of stack. Rather than force deopt to | |
1682 // maintain this kind of invariant all the time we call a small | |
1683 // fixup routine to move the mutated arguments onto the top of our | |
1684 // expression stack if necessary. | |
304 | 1685 __ mov(rax, rsp); |
1686 __ movptr(rbx, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
1295 | 1687 __ get_thread(thread); |
0 | 1688 // PC must point into interpreter here |
1295 | 1689 __ set_last_Java_frame(thread, noreg, rbp, __ pc()); |
1690 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), thread, rax, rbx); | |
1691 __ get_thread(thread); | |
1692 __ reset_last_Java_frame(thread, true, true); | |
0 | 1693 // Restore the last_sp and null it out |
304 | 1694 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
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1695 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 1696 |
1697 __ restore_bcp(); | |
1698 __ restore_locals(); | |
1699 // The method data pointer was incremented already during | |
1700 // call profiling. We have to restore the mdp for the current bcp. | |
1701 if (ProfileInterpreter) { | |
1702 __ set_method_data_pointer_for_bcp(); | |
1703 } | |
1704 | |
1705 // Clear the popframe condition flag | |
1295 | 1706 __ get_thread(thread); |
1707 __ movl(Address(thread, JavaThread::popframe_condition_offset()), JavaThread::popframe_inactive); | |
0 | 1708 |
1709 __ dispatch_next(vtos); | |
1710 // end of PopFrame support | |
1711 | |
1712 Interpreter::_remove_activation_entry = __ pc(); | |
1713 | |
1714 // preserve exception over this code sequence | |
1715 __ pop_ptr(rax); | |
1295 | 1716 __ get_thread(thread); |
1717 __ movptr(Address(thread, JavaThread::vm_result_offset()), rax); | |
0 | 1718 // remove the activation (without doing throws on illegalMonitorExceptions) |
1719 __ remove_activation(vtos, rdx, false, true, false); | |
1720 // restore exception | |
1295 | 1721 __ get_thread(thread); |
1722 __ movptr(rax, Address(thread, JavaThread::vm_result_offset())); | |
1723 __ movptr(Address(thread, JavaThread::vm_result_offset()), NULL_WORD); | |
0 | 1724 __ verify_oop(rax); |
1725 | |
1726 // Inbetween activations - previous activation type unknown yet | |
1727 // compute continuation point - the continuation point expects | |
1728 // the following registers set up: | |
1729 // | |
1295 | 1730 // rax: exception |
0 | 1731 // rdx: return address/pc that threw exception |
1732 // rsp: expression stack of caller | |
1295 | 1733 // rbp: rbp, of caller |
304 | 1734 __ push(rax); // save exception |
1735 __ push(rdx); // save return address | |
1295 | 1736 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), thread, rdx); |
304 | 1737 __ mov(rbx, rax); // save exception handler |
1738 __ pop(rdx); // restore return address | |
1739 __ pop(rax); // restore exception | |
0 | 1740 // Note that an "issuing PC" is actually the next PC after the call |
1741 __ jmp(rbx); // jump to exception handler of caller | |
1742 } | |
1743 | |
1744 | |
1745 // | |
1746 // JVMTI ForceEarlyReturn support | |
1747 // | |
1748 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
1749 address entry = __ pc(); | |
1295 | 1750 const Register thread = rcx; |
0 | 1751 |
1752 __ restore_bcp(); | |
1753 __ restore_locals(); | |
1754 __ empty_expression_stack(); | |
1755 __ empty_FPU_stack(); | |
1756 __ load_earlyret_value(state); | |
1757 | |
1295 | 1758 __ get_thread(thread); |
1759 __ movptr(rcx, Address(thread, JavaThread::jvmti_thread_state_offset())); | |
0 | 1760 const Address cond_addr(rcx, JvmtiThreadState::earlyret_state_offset()); |
1761 | |
1762 // Clear the earlyret state | |
1763 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
1764 | |
1765 __ remove_activation(state, rsi, | |
1766 false, /* throw_monitor_exception */ | |
1767 false, /* install_monitor_exception */ | |
1768 true); /* notify_jvmdi */ | |
1769 __ jmp(rsi); | |
1770 return entry; | |
1771 } // end of ForceEarlyReturn support | |
1772 | |
1773 | |
1774 //------------------------------------------------------------------------------------------------------------------------ | |
1775 // Helper for vtos entry point generation | |
1776 | |
1777 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) { | |
1778 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
1779 Label L; | |
1780 fep = __ pc(); __ push(ftos); __ jmp(L); | |
1781 dep = __ pc(); __ push(dtos); __ jmp(L); | |
1782 lep = __ pc(); __ push(ltos); __ jmp(L); | |
1783 aep = __ pc(); __ push(atos); __ jmp(L); | |
1784 bep = cep = sep = // fall through | |
1785 iep = __ pc(); __ push(itos); // fall through | |
1786 vep = __ pc(); __ bind(L); // fall through | |
1787 generate_and_dispatch(t); | |
1788 } | |
1789 | |
1790 //------------------------------------------------------------------------------------------------------------------------ | |
1791 // Generation of individual instructions | |
1792 | |
1793 // helpers for generate_and_dispatch | |
1794 | |
1795 | |
1796 | |
1797 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
1798 : TemplateInterpreterGenerator(code) { | |
1799 generate_all(); // down here so it can be "virtual" | |
1800 } | |
1801 | |
1802 //------------------------------------------------------------------------------------------------------------------------ | |
1803 | |
1804 // Non-product code | |
1805 #ifndef PRODUCT | |
1806 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
1807 address entry = __ pc(); | |
1808 | |
1809 // prepare expression stack | |
304 | 1810 __ pop(rcx); // pop return address so expression stack is 'pure' |
0 | 1811 __ push(state); // save tosca |
1812 | |
1813 // pass tosca registers as arguments & call tracer | |
1814 __ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), rcx, rax, rdx); | |
304 | 1815 __ mov(rcx, rax); // make sure return address is not destroyed by pop(state) |
0 | 1816 __ pop(state); // restore tosca |
1817 | |
1818 // return | |
1819 __ jmp(rcx); | |
1820 | |
1821 return entry; | |
1822 } | |
1823 | |
1824 | |
1825 void TemplateInterpreterGenerator::count_bytecode() { | |
304 | 1826 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); |
0 | 1827 } |
1828 | |
1829 | |
1830 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
304 | 1831 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); |
0 | 1832 } |
1833 | |
1834 | |
1835 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
1836 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
1837 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
1838 __ orl(rbx, ((int)t->bytecode()) << BytecodePairHistogram::log2_number_of_codes); | |
1839 ExternalAddress table((address) BytecodePairHistogram::_counters); | |
1840 Address index(noreg, rbx, Address::times_4); | |
304 | 1841 __ incrementl(ArrayAddress(table, index)); |
0 | 1842 } |
1843 | |
1844 | |
1845 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
1846 // Call a little run-time stub to avoid blow-up for each bytecode. | |
1847 // The run-time runtime saves the right registers, depending on | |
1848 // the tosca in-state for the given template. | |
1849 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
1850 "entry must have been generated"); | |
1851 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); | |
1852 } | |
1853 | |
1854 | |
1855 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
1856 Label L; | |
1857 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
1858 StopInterpreterAt); | |
1859 __ jcc(Assembler::notEqual, L); | |
1860 __ int3(); | |
1861 __ bind(L); | |
1862 } | |
1863 #endif // !PRODUCT | |
1864 #endif // CC_INTERP |