Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateInterpreter_x86_32.cpp @ 1108:85f13cdfbc1d
6829192: JSR 292 needs to support 64-bit x86
Summary: changes for method handles and invokedynamic
Reviewed-by: kvn
author | twisti |
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date | Wed, 16 Dec 2009 12:48:04 +0100 |
parents | 389049f3f393 |
children | e66fd840cb6b |
rev | line source |
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0 | 1 /* |
579 | 2 * Copyright 1997-2009 Sun Microsystems, Inc. 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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
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 } |
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217 __ get_cache_and_index_at_bcp(rbx, rcx, 1, false); |
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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); |
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229 __ get_cache_and_index_at_bcp(rbx, rcx, 1, true); |
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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 __ pop_dtos_to_rsp(); |
309 // Must return a result for interpreter or compiler. In SSE | |
310 // mode, results are returned in xmm0 and the FPU stack must | |
311 // be empty. | |
312 if (type == T_FLOAT && UseSSE >= 1) { | |
313 // Load ST0 | |
314 __ fld_d(Address(rsp, 0)); | |
315 // Store as float and empty fpu stack | |
316 __ fstp_s(Address(rsp, 0)); | |
317 // and reload | |
318 __ movflt(xmm0, Address(rsp, 0)); | |
319 } else if (type == T_DOUBLE && UseSSE >= 2 ) { | |
320 __ movdbl(xmm0, Address(rsp, 0)); | |
321 } else { | |
322 // restore ST0 | |
323 __ fld_d(Address(rsp, 0)); | |
324 } | |
325 // and pop the temp | |
304 | 326 __ addptr(rsp, 2 * wordSize); |
327 __ push(t); // restore return address | |
0 | 328 } |
329 break; | |
330 case T_OBJECT : | |
331 // retrieve result from frame | |
304 | 332 __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); |
0 | 333 // and verify it |
334 __ verify_oop(rax); | |
335 break; | |
336 default : ShouldNotReachHere(); | |
337 } | |
338 __ ret(0); // return from result handler | |
339 return entry; | |
340 } | |
341 | |
342 address TemplateInterpreterGenerator::generate_safept_entry_for(TosState state, address runtime_entry) { | |
343 address entry = __ pc(); | |
344 __ push(state); | |
345 __ call_VM(noreg, runtime_entry); | |
346 __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); | |
347 return entry; | |
348 } | |
349 | |
350 | |
351 // Helpers for commoning out cases in the various type of method entries. | |
352 // | |
353 | |
354 // increment invocation count & check for overflow | |
355 // | |
356 // Note: checking for negative value instead of overflow | |
357 // so we have a 'sticky' overflow test | |
358 // | |
359 // rbx,: method | |
360 // rcx: invocation counter | |
361 // | |
362 void InterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) { | |
363 | |
364 const Address invocation_counter(rbx, methodOopDesc::invocation_counter_offset() + InvocationCounter::counter_offset()); | |
365 const Address backedge_counter (rbx, methodOopDesc::backedge_counter_offset() + InvocationCounter::counter_offset()); | |
366 | |
367 if (ProfileInterpreter) { // %%% Merge this into methodDataOop | |
304 | 368 __ incrementl(Address(rbx,methodOopDesc::interpreter_invocation_counter_offset())); |
0 | 369 } |
370 // Update standard invocation counters | |
371 __ movl(rax, backedge_counter); // load backedge counter | |
372 | |
304 | 373 __ incrementl(rcx, InvocationCounter::count_increment); |
0 | 374 __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits |
375 | |
376 __ movl(invocation_counter, rcx); // save invocation count | |
377 __ addl(rcx, rax); // add both counters | |
378 | |
379 // profile_method is non-null only for interpreted method so | |
380 // profile_method != NULL == !native_call | |
381 // BytecodeInterpreter only calls for native so code is elided. | |
382 | |
383 if (ProfileInterpreter && profile_method != NULL) { | |
384 // Test to see if we should create a method data oop | |
385 __ cmp32(rcx, | |
386 ExternalAddress((address)&InvocationCounter::InterpreterProfileLimit)); | |
387 __ jcc(Assembler::less, *profile_method_continue); | |
388 | |
389 // if no method data exists, go to profile_method | |
390 __ test_method_data_pointer(rax, *profile_method); | |
391 } | |
392 | |
393 __ cmp32(rcx, | |
394 ExternalAddress((address)&InvocationCounter::InterpreterInvocationLimit)); | |
395 __ jcc(Assembler::aboveEqual, *overflow); | |
396 | |
397 } | |
398 | |
399 void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { | |
400 | |
401 // Asm interpreter on entry | |
402 // rdi - locals | |
403 // rsi - bcp | |
404 // rbx, - method | |
405 // rdx - cpool | |
406 // rbp, - interpreter frame | |
407 | |
408 // C++ interpreter on entry | |
409 // rsi - new interpreter state pointer | |
410 // rbp - interpreter frame pointer | |
411 // rbx - method | |
412 | |
413 // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] | |
414 // rbx, - method | |
415 // rcx - rcvr (assuming there is one) | |
416 // top of stack return address of interpreter caller | |
417 // rsp - sender_sp | |
418 | |
419 // C++ interpreter only | |
420 // rsi - previous interpreter state pointer | |
421 | |
422 const Address size_of_parameters(rbx, methodOopDesc::size_of_parameters_offset()); | |
423 | |
424 // InterpreterRuntime::frequency_counter_overflow takes one argument | |
425 // indicating if the counter overflow occurs at a backwards branch (non-NULL bcp). | |
426 // The call returns the address of the verified entry point for the method or NULL | |
427 // if the compilation did not complete (either went background or bailed out). | |
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428 __ movptr(rax, (intptr_t)false); |
0 | 429 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rax); |
430 | |
304 | 431 __ movptr(rbx, Address(rbp, method_offset)); // restore methodOop |
0 | 432 |
433 // Preserve invariant that rsi/rdi contain bcp/locals of sender frame | |
434 // and jump to the interpreted entry. | |
435 __ jmp(*do_continue, relocInfo::none); | |
436 | |
437 } | |
438 | |
439 void InterpreterGenerator::generate_stack_overflow_check(void) { | |
440 // see if we've got enough room on the stack for locals plus overhead. | |
441 // the expression stack grows down incrementally, so the normal guard | |
442 // page mechanism will work for that. | |
443 // | |
444 // Registers live on entry: | |
445 // | |
446 // Asm interpreter | |
447 // rdx: number of additional locals this frame needs (what we must check) | |
448 // rbx,: methodOop | |
449 | |
450 // destroyed on exit | |
451 // rax, | |
452 | |
453 // NOTE: since the additional locals are also always pushed (wasn't obvious in | |
454 // generate_method_entry) so the guard should work for them too. | |
455 // | |
456 | |
457 // monitor entry size: see picture of stack set (generate_method_entry) and frame_x86.hpp | |
458 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
459 | |
460 // total overhead size: entry_size + (saved rbp, thru expr stack bottom). | |
461 // be sure to change this if you add/subtract anything to/from the overhead area | |
462 const int overhead_size = -(frame::interpreter_frame_initial_sp_offset*wordSize) + entry_size; | |
463 | |
464 const int page_size = os::vm_page_size(); | |
465 | |
466 Label after_frame_check; | |
467 | |
468 // see if the frame is greater than one page in size. If so, | |
469 // then we need to verify there is enough stack space remaining | |
470 // for the additional locals. | |
471 __ cmpl(rdx, (page_size - overhead_size)/Interpreter::stackElementSize()); | |
472 __ jcc(Assembler::belowEqual, after_frame_check); | |
473 | |
474 // compute rsp as if this were going to be the last frame on | |
475 // the stack before the red zone | |
476 | |
477 Label after_frame_check_pop; | |
478 | |
304 | 479 __ push(rsi); |
0 | 480 |
481 const Register thread = rsi; | |
482 | |
483 __ get_thread(thread); | |
484 | |
485 const Address stack_base(thread, Thread::stack_base_offset()); | |
486 const Address stack_size(thread, Thread::stack_size_offset()); | |
487 | |
488 // locals + overhead, in bytes | |
304 | 489 __ lea(rax, Address(noreg, rdx, Interpreter::stackElementScale(), overhead_size)); |
0 | 490 |
491 #ifdef ASSERT | |
492 Label stack_base_okay, stack_size_okay; | |
493 // verify that thread stack base is non-zero | |
304 | 494 __ cmpptr(stack_base, (int32_t)NULL_WORD); |
0 | 495 __ jcc(Assembler::notEqual, stack_base_okay); |
496 __ stop("stack base is zero"); | |
497 __ bind(stack_base_okay); | |
498 // verify that thread stack size is non-zero | |
304 | 499 __ cmpptr(stack_size, 0); |
0 | 500 __ jcc(Assembler::notEqual, stack_size_okay); |
501 __ stop("stack size is zero"); | |
502 __ bind(stack_size_okay); | |
503 #endif | |
504 | |
505 // Add stack base to locals and subtract stack size | |
304 | 506 __ addptr(rax, stack_base); |
507 __ subptr(rax, stack_size); | |
0 | 508 |
509 // Use the maximum number of pages we might bang. | |
510 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : | |
511 (StackRedPages+StackYellowPages); | |
304 | 512 __ addptr(rax, max_pages * page_size); |
0 | 513 |
514 // check against the current stack bottom | |
304 | 515 __ cmpptr(rsp, rax); |
0 | 516 __ jcc(Assembler::above, after_frame_check_pop); |
517 | |
304 | 518 __ pop(rsi); // get saved bcp / (c++ prev state ). |
0 | 519 |
304 | 520 __ pop(rax); // get return address |
0 | 521 __ jump(ExternalAddress(Interpreter::throw_StackOverflowError_entry())); |
522 | |
523 // all done with frame size check | |
524 __ bind(after_frame_check_pop); | |
304 | 525 __ pop(rsi); |
0 | 526 |
527 __ bind(after_frame_check); | |
528 } | |
529 | |
530 // Allocate monitor and lock method (asm interpreter) | |
531 // rbx, - methodOop | |
532 // | |
533 void InterpreterGenerator::lock_method(void) { | |
534 // synchronize method | |
535 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
536 const Address monitor_block_top (rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
537 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
538 | |
539 #ifdef ASSERT | |
540 { Label L; | |
541 __ movl(rax, access_flags); | |
542 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
543 __ jcc(Assembler::notZero, L); | |
544 __ stop("method doesn't need synchronization"); | |
545 __ bind(L); | |
546 } | |
547 #endif // ASSERT | |
548 // get synchronization object | |
549 { Label done; | |
550 const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); | |
551 __ movl(rax, access_flags); | |
552 __ testl(rax, JVM_ACC_STATIC); | |
304 | 553 __ movptr(rax, Address(rdi, Interpreter::local_offset_in_bytes(0))); // get receiver (assume this is frequent case) |
0 | 554 __ jcc(Assembler::zero, done); |
304 | 555 __ movptr(rax, Address(rbx, methodOopDesc::constants_offset())); |
556 __ movptr(rax, Address(rax, constantPoolOopDesc::pool_holder_offset_in_bytes())); | |
557 __ movptr(rax, Address(rax, mirror_offset)); | |
0 | 558 __ bind(done); |
559 } | |
560 // add space for monitor & lock | |
304 | 561 __ subptr(rsp, entry_size); // add space for a monitor entry |
562 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
563 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); // store object | |
564 __ mov(rdx, rsp); // object address | |
0 | 565 __ lock_object(rdx); |
566 } | |
567 | |
568 // | |
569 // Generate a fixed interpreter frame. This is identical setup for interpreted methods | |
570 // and for native methods hence the shared code. | |
571 | |
572 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
573 // initialize fixed part of activation frame | |
304 | 574 __ push(rax); // save return address |
0 | 575 __ enter(); // save old & set new rbp, |
576 | |
577 | |
304 | 578 __ push(rsi); // set sender sp |
579 __ push((int32_t)NULL_WORD); // leave last_sp as null | |
580 __ movptr(rsi, Address(rbx,methodOopDesc::const_offset())); // get constMethodOop | |
581 __ lea(rsi, Address(rsi,constMethodOopDesc::codes_offset())); // get codebase | |
582 __ push(rbx); // save methodOop | |
0 | 583 if (ProfileInterpreter) { |
584 Label method_data_continue; | |
304 | 585 __ movptr(rdx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
586 __ testptr(rdx, rdx); | |
0 | 587 __ jcc(Assembler::zero, method_data_continue); |
304 | 588 __ addptr(rdx, in_bytes(methodDataOopDesc::data_offset())); |
0 | 589 __ bind(method_data_continue); |
304 | 590 __ push(rdx); // set the mdp (method data pointer) |
0 | 591 } else { |
304 | 592 __ push(0); |
0 | 593 } |
594 | |
304 | 595 __ movptr(rdx, Address(rbx, methodOopDesc::constants_offset())); |
596 __ movptr(rdx, Address(rdx, constantPoolOopDesc::cache_offset_in_bytes())); | |
597 __ push(rdx); // set constant pool cache | |
598 __ push(rdi); // set locals pointer | |
0 | 599 if (native_call) { |
304 | 600 __ push(0); // no bcp |
0 | 601 } else { |
304 | 602 __ push(rsi); // set bcp |
0 | 603 } |
304 | 604 __ push(0); // reserve word for pointer to expression stack bottom |
605 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
0 | 606 } |
607 | |
608 // End of helpers | |
609 | |
610 // | |
611 // Various method entries | |
612 //------------------------------------------------------------------------------------------------------------------------ | |
613 // | |
614 // | |
615 | |
616 // Call an accessor method (assuming it is resolved, otherwise drop into vanilla (slow path) entry | |
617 | |
618 address InterpreterGenerator::generate_accessor_entry(void) { | |
619 | |
620 // rbx,: methodOop | |
621 // rcx: receiver (preserve for slow entry into asm interpreter) | |
622 | |
623 // rsi: senderSP must preserved for slow path, set SP to it on fast path | |
624 | |
625 address entry_point = __ pc(); | |
626 Label xreturn_path; | |
627 | |
628 // do fastpath for resolved accessor methods | |
629 if (UseFastAccessorMethods) { | |
630 Label slow_path; | |
631 // If we need a safepoint check, generate full interpreter entry. | |
632 ExternalAddress state(SafepointSynchronize::address_of_state()); | |
633 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
634 SafepointSynchronize::_not_synchronized); | |
635 | |
636 __ jcc(Assembler::notEqual, slow_path); | |
637 // ASM/C++ Interpreter | |
638 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites thereof; parameter size = 1 | |
639 // Note: We can only use this code if the getfield has been resolved | |
640 // and if we don't have a null-pointer exception => check for | |
641 // these conditions first and use slow path if necessary. | |
642 // rbx,: method | |
643 // rcx: receiver | |
304 | 644 __ movptr(rax, Address(rsp, wordSize)); |
0 | 645 |
646 // check if local 0 != NULL and read field | |
304 | 647 __ testptr(rax, rax); |
0 | 648 __ jcc(Assembler::zero, slow_path); |
649 | |
304 | 650 __ movptr(rdi, Address(rbx, methodOopDesc::constants_offset())); |
0 | 651 // read first instruction word and extract bytecode @ 1 and index @ 2 |
304 | 652 __ movptr(rdx, Address(rbx, methodOopDesc::const_offset())); |
0 | 653 __ movl(rdx, Address(rdx, constMethodOopDesc::codes_offset())); |
654 // Shift codes right to get the index on the right. | |
655 // The bytecode fetched looks like <index><0xb4><0x2a> | |
656 __ shrl(rdx, 2*BitsPerByte); | |
657 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
304 | 658 __ movptr(rdi, Address(rdi, constantPoolOopDesc::cache_offset_in_bytes())); |
0 | 659 |
660 // rax,: local 0 | |
661 // rbx,: method | |
662 // rcx: receiver - do not destroy since it is needed for slow path! | |
663 // rcx: scratch | |
664 // rdx: constant pool cache index | |
665 // rdi: constant pool cache | |
666 // rsi: sender sp | |
667 | |
668 // check if getfield has been resolved and read constant pool cache entry | |
669 // check the validity of the cache entry by testing whether _indices field | |
670 // contains Bytecode::_getfield in b1 byte. | |
671 assert(in_words(ConstantPoolCacheEntry::size()) == 4, "adjust shift below"); | |
672 __ movl(rcx, | |
673 Address(rdi, | |
674 rdx, | |
304 | 675 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::indices_offset())); |
0 | 676 __ shrl(rcx, 2*BitsPerByte); |
677 __ andl(rcx, 0xFF); | |
678 __ cmpl(rcx, Bytecodes::_getfield); | |
679 __ jcc(Assembler::notEqual, slow_path); | |
680 | |
681 // Note: constant pool entry is not valid before bytecode is resolved | |
304 | 682 __ movptr(rcx, |
683 Address(rdi, | |
684 rdx, | |
685 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f2_offset())); | |
0 | 686 __ movl(rdx, |
687 Address(rdi, | |
688 rdx, | |
304 | 689 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::flags_offset())); |
0 | 690 |
691 Label notByte, notShort, notChar; | |
692 const Address field_address (rax, rcx, Address::times_1); | |
693 | |
694 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
695 // because they are different sizes. | |
696 // Use the type from the constant pool cache | |
697 __ shrl(rdx, ConstantPoolCacheEntry::tosBits); | |
698 // Make sure we don't need to mask rdx for tosBits after the above shift | |
699 ConstantPoolCacheEntry::verify_tosBits(); | |
700 __ cmpl(rdx, btos); | |
701 __ jcc(Assembler::notEqual, notByte); | |
702 __ load_signed_byte(rax, field_address); | |
703 __ jmp(xreturn_path); | |
704 | |
705 __ bind(notByte); | |
706 __ cmpl(rdx, stos); | |
707 __ jcc(Assembler::notEqual, notShort); | |
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708 __ load_signed_short(rax, field_address); |
0 | 709 __ jmp(xreturn_path); |
710 | |
711 __ bind(notShort); | |
712 __ cmpl(rdx, ctos); | |
713 __ jcc(Assembler::notEqual, notChar); | |
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714 __ load_unsigned_short(rax, field_address); |
0 | 715 __ jmp(xreturn_path); |
716 | |
717 __ bind(notChar); | |
718 #ifdef ASSERT | |
719 Label okay; | |
720 __ cmpl(rdx, atos); | |
721 __ jcc(Assembler::equal, okay); | |
722 __ cmpl(rdx, itos); | |
723 __ jcc(Assembler::equal, okay); | |
724 __ stop("what type is this?"); | |
725 __ bind(okay); | |
726 #endif // ASSERT | |
727 // All the rest are a 32 bit wordsize | |
304 | 728 // This is ok for now. Since fast accessors should be going away |
729 __ movptr(rax, field_address); | |
0 | 730 |
731 __ bind(xreturn_path); | |
732 | |
733 // _ireturn/_areturn | |
304 | 734 __ pop(rdi); // get return address |
735 __ mov(rsp, rsi); // set sp to sender sp | |
0 | 736 __ jmp(rdi); |
737 | |
738 // generate a vanilla interpreter entry as the slow path | |
739 __ bind(slow_path); | |
740 | |
741 (void) generate_normal_entry(false); | |
742 return entry_point; | |
743 } | |
744 return NULL; | |
745 | |
746 } | |
747 | |
748 // | |
749 // Interpreter stub for calling a native method. (asm interpreter) | |
750 // This sets up a somewhat different looking stack for calling the native method | |
751 // than the typical interpreter frame setup. | |
752 // | |
753 | |
754 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
755 // determine code generation flags | |
756 bool inc_counter = UseCompiler || CountCompiledCalls; | |
757 | |
758 // rbx,: methodOop | |
759 // rsi: sender sp | |
760 // rsi: previous interpreter state (C++ interpreter) must preserve | |
761 address entry_point = __ pc(); | |
762 | |
763 | |
764 const Address size_of_parameters(rbx, methodOopDesc::size_of_parameters_offset()); | |
765 const Address invocation_counter(rbx, methodOopDesc::invocation_counter_offset() + InvocationCounter::counter_offset()); | |
766 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
767 | |
768 // get parameter size (always needed) | |
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769 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 770 |
771 // native calls don't need the stack size check since they have no expression stack | |
772 // and the arguments are already on the stack and we only add a handful of words | |
773 // to the stack | |
774 | |
775 // rbx,: methodOop | |
776 // rcx: size of parameters | |
777 // rsi: sender sp | |
778 | |
304 | 779 __ pop(rax); // get return address |
0 | 780 // for natives the size of locals is zero |
781 | |
782 // compute beginning of parameters (rdi) | |
304 | 783 __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); |
0 | 784 |
785 | |
786 // add 2 zero-initialized slots for native calls | |
787 // NULL result handler | |
304 | 788 __ push((int32_t)NULL_WORD); |
0 | 789 // NULL oop temp (mirror or jni oop result) |
304 | 790 __ push((int32_t)NULL_WORD); |
0 | 791 |
792 if (inc_counter) __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
793 // initialize fixed part of activation frame | |
794 | |
795 generate_fixed_frame(true); | |
796 | |
797 // make sure method is native & not abstract | |
798 #ifdef ASSERT | |
799 __ movl(rax, access_flags); | |
800 { | |
801 Label L; | |
802 __ testl(rax, JVM_ACC_NATIVE); | |
803 __ jcc(Assembler::notZero, L); | |
804 __ stop("tried to execute non-native method as native"); | |
805 __ bind(L); | |
806 } | |
807 { Label L; | |
808 __ testl(rax, JVM_ACC_ABSTRACT); | |
809 __ jcc(Assembler::zero, L); | |
810 __ stop("tried to execute abstract method in interpreter"); | |
811 __ bind(L); | |
812 } | |
813 #endif | |
814 | |
815 // Since at this point in the method invocation the exception handler | |
816 // would try to exit the monitor of synchronized methods which hasn't | |
817 // been entered yet, we set the thread local variable | |
818 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
819 // check this flag. | |
820 | |
821 __ get_thread(rax); | |
822 const Address do_not_unlock_if_synchronized(rax, | |
823 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
824 __ movbool(do_not_unlock_if_synchronized, true); | |
825 | |
826 // increment invocation count & check for overflow | |
827 Label invocation_counter_overflow; | |
828 if (inc_counter) { | |
829 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
830 } | |
831 | |
832 Label continue_after_compile; | |
833 __ bind(continue_after_compile); | |
834 | |
835 bang_stack_shadow_pages(true); | |
836 | |
837 // reset the _do_not_unlock_if_synchronized flag | |
838 __ get_thread(rax); | |
839 __ movbool(do_not_unlock_if_synchronized, false); | |
840 | |
841 // check for synchronized methods | |
842 // Must happen AFTER invocation_counter check and stack overflow check, | |
843 // so method is not locked if overflows. | |
844 // | |
845 if (synchronized) { | |
846 lock_method(); | |
847 } else { | |
848 // no synchronization necessary | |
849 #ifdef ASSERT | |
850 { Label L; | |
851 __ movl(rax, access_flags); | |
852 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
853 __ jcc(Assembler::zero, L); | |
854 __ stop("method needs synchronization"); | |
855 __ bind(L); | |
856 } | |
857 #endif | |
858 } | |
859 | |
860 // start execution | |
861 #ifdef ASSERT | |
862 { Label L; | |
863 const Address monitor_block_top (rbp, | |
864 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 865 __ movptr(rax, monitor_block_top); |
866 __ cmpptr(rax, rsp); | |
0 | 867 __ jcc(Assembler::equal, L); |
868 __ stop("broken stack frame setup in interpreter"); | |
869 __ bind(L); | |
870 } | |
871 #endif | |
872 | |
873 // jvmti/dtrace support | |
874 __ notify_method_entry(); | |
875 | |
876 // work registers | |
877 const Register method = rbx; | |
878 const Register thread = rdi; | |
879 const Register t = rcx; | |
880 | |
881 // allocate space for parameters | |
882 __ get_method(method); | |
883 __ verify_oop(method); | |
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884 __ load_unsigned_short(t, Address(method, methodOopDesc::size_of_parameters_offset())); |
304 | 885 __ shlptr(t, Interpreter::logStackElementSize()); |
886 __ addptr(t, 2*wordSize); // allocate two more slots for JNIEnv and possible mirror | |
887 __ subptr(rsp, t); | |
888 __ andptr(rsp, -(StackAlignmentInBytes)); // gcc needs 16 byte aligned stacks to do XMM intrinsics | |
0 | 889 |
890 // get signature handler | |
891 { Label L; | |
304 | 892 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
893 __ testptr(t, t); | |
0 | 894 __ jcc(Assembler::notZero, L); |
895 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); | |
896 __ get_method(method); | |
304 | 897 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
0 | 898 __ bind(L); |
899 } | |
900 | |
901 // call signature handler | |
902 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == rdi, "adjust this code"); | |
903 assert(InterpreterRuntime::SignatureHandlerGenerator::to () == rsp, "adjust this code"); | |
904 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == t , "adjust this code"); | |
905 // The generated handlers do not touch RBX (the method oop). | |
906 // However, large signatures cannot be cached and are generated | |
907 // each time here. The slow-path generator will blow RBX | |
908 // sometime, so we must reload it after the call. | |
909 __ call(t); | |
910 __ get_method(method); // slow path call blows RBX on DevStudio 5.0 | |
911 | |
912 // result handler is in rax, | |
913 // set result handler | |
304 | 914 __ movptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), rax); |
0 | 915 |
916 // pass mirror handle if static call | |
917 { Label L; | |
918 const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); | |
919 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); | |
920 __ testl(t, JVM_ACC_STATIC); | |
921 __ jcc(Assembler::zero, L); | |
922 // get mirror | |
304 | 923 __ movptr(t, Address(method, methodOopDesc:: constants_offset())); |
924 __ movptr(t, Address(t, constantPoolOopDesc::pool_holder_offset_in_bytes())); | |
925 __ movptr(t, Address(t, mirror_offset)); | |
0 | 926 // copy mirror into activation frame |
304 | 927 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), t); |
0 | 928 // pass handle to mirror |
304 | 929 __ lea(t, Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); |
930 __ movptr(Address(rsp, wordSize), t); | |
0 | 931 __ bind(L); |
932 } | |
933 | |
934 // get native function entry point | |
935 { Label L; | |
304 | 936 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
0 | 937 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
304 | 938 __ cmpptr(rax, unsatisfied.addr()); |
0 | 939 __ jcc(Assembler::notEqual, L); |
940 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); | |
941 __ get_method(method); | |
942 __ verify_oop(method); | |
304 | 943 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
0 | 944 __ bind(L); |
945 } | |
946 | |
947 // pass JNIEnv | |
948 __ get_thread(thread); | |
304 | 949 __ lea(t, Address(thread, JavaThread::jni_environment_offset())); |
950 __ movptr(Address(rsp, 0), t); | |
0 | 951 |
952 // set_last_Java_frame_before_call | |
953 // It is enough that the pc() | |
954 // points into the right code segment. It does not have to be the correct return pc. | |
955 __ set_last_Java_frame(thread, noreg, rbp, __ pc()); | |
956 | |
957 // change thread state | |
958 #ifdef ASSERT | |
959 { Label L; | |
960 __ movl(t, Address(thread, JavaThread::thread_state_offset())); | |
961 __ cmpl(t, _thread_in_Java); | |
962 __ jcc(Assembler::equal, L); | |
963 __ stop("Wrong thread state in native stub"); | |
964 __ bind(L); | |
965 } | |
966 #endif | |
967 | |
968 // Change state to native | |
969 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native); | |
970 __ call(rax); | |
971 | |
972 // result potentially in rdx:rax or ST0 | |
973 | |
974 // Either restore the MXCSR register after returning from the JNI Call | |
975 // or verify that it wasn't changed. | |
976 if (VM_Version::supports_sse()) { | |
977 if (RestoreMXCSROnJNICalls) { | |
978 __ ldmxcsr(ExternalAddress(StubRoutines::addr_mxcsr_std())); | |
979 } | |
980 else if (CheckJNICalls ) { | |
304 | 981 __ call(RuntimeAddress(StubRoutines::x86::verify_mxcsr_entry())); |
0 | 982 } |
983 } | |
984 | |
985 // Either restore the x87 floating pointer control word after returning | |
986 // from the JNI call or verify that it wasn't changed. | |
987 if (CheckJNICalls) { | |
304 | 988 __ call(RuntimeAddress(StubRoutines::x86::verify_fpu_cntrl_wrd_entry())); |
0 | 989 } |
990 | |
991 // save potential result in ST(0) & rdx:rax | |
992 // (if result handler is the T_FLOAT or T_DOUBLE handler, result must be in ST0 - | |
993 // the check is necessary to avoid potential Intel FPU overflow problems by saving/restoring 'empty' FPU registers) | |
994 // It is safe to do this push because state is _thread_in_native and return address will be found | |
995 // via _last_native_pc and not via _last_jave_sp | |
996 | |
997 // NOTE: the order of theses push(es) is known to frame::interpreter_frame_result. | |
998 // If the order changes or anything else is added to the stack the code in | |
999 // interpreter_frame_result will have to be changed. | |
1000 | |
1001 { Label L; | |
1002 Label push_double; | |
1003 ExternalAddress float_handler(AbstractInterpreter::result_handler(T_FLOAT)); | |
1004 ExternalAddress double_handler(AbstractInterpreter::result_handler(T_DOUBLE)); | |
1005 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), | |
1006 float_handler.addr()); | |
1007 __ jcc(Assembler::equal, push_double); | |
1008 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), | |
1009 double_handler.addr()); | |
1010 __ jcc(Assembler::notEqual, L); | |
1011 __ bind(push_double); | |
1012 __ push(dtos); | |
1013 __ bind(L); | |
1014 } | |
1015 __ push(ltos); | |
1016 | |
1017 // change thread state | |
1018 __ get_thread(thread); | |
1019 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native_trans); | |
1020 if(os::is_MP()) { | |
1021 if (UseMembar) { | |
304 | 1022 // Force this write out before the read below |
1023 __ membar(Assembler::Membar_mask_bits( | |
1024 Assembler::LoadLoad | Assembler::LoadStore | | |
1025 Assembler::StoreLoad | Assembler::StoreStore)); | |
0 | 1026 } else { |
1027 // Write serialization page so VM thread can do a pseudo remote membar. | |
1028 // We use the current thread pointer to calculate a thread specific | |
1029 // offset to write to within the page. This minimizes bus traffic | |
1030 // due to cache line collision. | |
1031 __ serialize_memory(thread, rcx); | |
1032 } | |
1033 } | |
1034 | |
1035 if (AlwaysRestoreFPU) { | |
1036 // Make sure the control word is correct. | |
1037 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); | |
1038 } | |
1039 | |
1040 // check for safepoint operation in progress and/or pending suspend requests | |
1041 { Label Continue; | |
1042 | |
1043 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
1044 SafepointSynchronize::_not_synchronized); | |
1045 | |
1046 Label L; | |
1047 __ jcc(Assembler::notEqual, L); | |
1048 __ cmpl(Address(thread, JavaThread::suspend_flags_offset()), 0); | |
1049 __ jcc(Assembler::equal, Continue); | |
1050 __ bind(L); | |
1051 | |
1052 // Don't use call_VM as it will see a possible pending exception and forward it | |
1053 // and never return here preventing us from clearing _last_native_pc down below. | |
1054 // Also can't use call_VM_leaf either as it will check to see if rsi & rdi are | |
1055 // preserved and correspond to the bcp/locals pointers. So we do a runtime call | |
1056 // by hand. | |
1057 // | |
304 | 1058 __ push(thread); |
0 | 1059 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, |
1060 JavaThread::check_special_condition_for_native_trans))); | |
1061 __ increment(rsp, wordSize); | |
1062 __ get_thread(thread); | |
1063 | |
1064 __ bind(Continue); | |
1065 } | |
1066 | |
1067 // change thread state | |
1068 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
1069 | |
1070 __ reset_last_Java_frame(thread, true, true); | |
1071 | |
1072 // reset handle block | |
304 | 1073 __ movptr(t, Address(thread, JavaThread::active_handles_offset())); |
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1074 __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), NULL_WORD); |
0 | 1075 |
1076 // If result was an oop then unbox and save it in the frame | |
1077 { Label L; | |
1078 Label no_oop, store_result; | |
1079 ExternalAddress handler(AbstractInterpreter::result_handler(T_OBJECT)); | |
1080 __ cmpptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), | |
1081 handler.addr()); | |
1082 __ jcc(Assembler::notEqual, no_oop); | |
304 | 1083 __ cmpptr(Address(rsp, 0), (int32_t)NULL_WORD); |
0 | 1084 __ pop(ltos); |
304 | 1085 __ testptr(rax, rax); |
0 | 1086 __ jcc(Assembler::zero, store_result); |
1087 // unbox | |
304 | 1088 __ movptr(rax, Address(rax, 0)); |
0 | 1089 __ bind(store_result); |
304 | 1090 __ movptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset)*wordSize), rax); |
0 | 1091 // keep stack depth as expected by pushing oop which will eventually be discarded |
1092 __ push(ltos); | |
1093 __ bind(no_oop); | |
1094 } | |
1095 | |
1096 { | |
1097 Label no_reguard; | |
1098 __ cmpl(Address(thread, JavaThread::stack_guard_state_offset()), JavaThread::stack_guard_yellow_disabled); | |
1099 __ jcc(Assembler::notEqual, no_reguard); | |
1100 | |
304 | 1101 __ pusha(); |
0 | 1102 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
304 | 1103 __ popa(); |
0 | 1104 |
1105 __ bind(no_reguard); | |
1106 } | |
1107 | |
1108 // restore rsi to have legal interpreter frame, | |
1109 // i.e., bci == 0 <=> rsi == code_base() | |
1110 // Can't call_VM until bcp is within reasonable. | |
1111 __ get_method(method); // method is junk from thread_in_native to now. | |
1112 __ verify_oop(method); | |
304 | 1113 __ movptr(rsi, Address(method,methodOopDesc::const_offset())); // get constMethodOop |
1114 __ lea(rsi, Address(rsi,constMethodOopDesc::codes_offset())); // get codebase | |
0 | 1115 |
1116 // handle exceptions (exception handling will handle unlocking!) | |
1117 { Label L; | |
304 | 1118 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
0 | 1119 __ jcc(Assembler::zero, L); |
1120 // Note: At some point we may want to unify this with the code used in call_VM_base(); | |
1121 // i.e., we should use the StubRoutines::forward_exception code. For now this | |
1122 // doesn't work here because the rsp is not correctly set at this point. | |
1123 __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); | |
1124 __ should_not_reach_here(); | |
1125 __ bind(L); | |
1126 } | |
1127 | |
1128 // do unlocking if necessary | |
1129 { Label L; | |
1130 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); | |
1131 __ testl(t, JVM_ACC_SYNCHRONIZED); | |
1132 __ jcc(Assembler::zero, L); | |
1133 // the code below should be shared with interpreter macro assembler implementation | |
1134 { Label unlock; | |
1135 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
1136 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
1137 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
1138 | |
304 | 1139 __ lea(rdx, monitor); // address of first monitor |
0 | 1140 |
304 | 1141 __ movptr(t, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
1142 __ testptr(t, t); | |
0 | 1143 __ jcc(Assembler::notZero, unlock); |
1144 | |
1145 // Entry already unlocked, need to throw exception | |
1146 __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
1147 __ should_not_reach_here(); | |
1148 | |
1149 __ bind(unlock); | |
1150 __ unlock_object(rdx); | |
1151 } | |
1152 __ bind(L); | |
1153 } | |
1154 | |
1155 // jvmti/dtrace support | |
1156 // Note: This must happen _after_ handling/throwing any exceptions since | |
1157 // the exception handler code notifies the runtime of method exits | |
1158 // too. If this happens before, method entry/exit notifications are | |
1159 // not properly paired (was bug - gri 11/22/99). | |
1160 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
1161 | |
1162 // restore potential result in rdx:rax, call result handler to restore potential result in ST0 & handle result | |
1163 __ pop(ltos); | |
304 | 1164 __ movptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
0 | 1165 __ call(t); |
1166 | |
1167 // remove activation | |
304 | 1168 __ movptr(t, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 1169 __ leave(); // remove frame anchor |
304 | 1170 __ pop(rdi); // get return address |
1171 __ mov(rsp, t); // set sp to sender sp | |
0 | 1172 __ jmp(rdi); |
1173 | |
1174 if (inc_counter) { | |
1175 // Handle overflow of counter and compile method | |
1176 __ bind(invocation_counter_overflow); | |
1177 generate_counter_overflow(&continue_after_compile); | |
1178 } | |
1179 | |
1180 return entry_point; | |
1181 } | |
1182 | |
1183 // | |
1184 // Generic interpreted method entry to (asm) interpreter | |
1185 // | |
1186 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
1187 // determine code generation flags | |
1188 bool inc_counter = UseCompiler || CountCompiledCalls; | |
1189 | |
1190 // rbx,: methodOop | |
1191 // rsi: sender sp | |
1192 address entry_point = __ pc(); | |
1193 | |
1194 | |
1195 const Address size_of_parameters(rbx, methodOopDesc::size_of_parameters_offset()); | |
1196 const Address size_of_locals (rbx, methodOopDesc::size_of_locals_offset()); | |
1197 const Address invocation_counter(rbx, methodOopDesc::invocation_counter_offset() + InvocationCounter::counter_offset()); | |
1198 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
1199 | |
1200 // get parameter size (always needed) | |
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1201 __ load_unsigned_short(rcx, size_of_parameters); |
0 | 1202 |
1203 // rbx,: methodOop | |
1204 // rcx: size of parameters | |
1205 | |
1206 // rsi: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
1207 | |
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1208 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
0 | 1209 __ subl(rdx, rcx); // rdx = no. of additional locals |
1210 | |
1211 // see if we've got enough room on the stack for locals plus overhead. | |
1212 generate_stack_overflow_check(); | |
1213 | |
1214 // get return address | |
304 | 1215 __ pop(rax); |
0 | 1216 |
1217 // compute beginning of parameters (rdi) | |
304 | 1218 __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); |
0 | 1219 |
1220 // rdx - # of additional locals | |
1221 // allocate space for locals | |
1222 // explicitly initialize locals | |
1223 { | |
1224 Label exit, loop; | |
1225 __ testl(rdx, rdx); | |
1226 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 | |
1227 __ bind(loop); | |
304 | 1228 if (TaggedStackInterpreter) { |
1229 __ push((int32_t)NULL_WORD); // push tag | |
1230 } | |
1231 __ push((int32_t)NULL_WORD); // initialize local variables | |
0 | 1232 __ decrement(rdx); // until everything initialized |
1233 __ jcc(Assembler::greater, loop); | |
1234 __ bind(exit); | |
1235 } | |
1236 | |
1237 if (inc_counter) __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
1238 // initialize fixed part of activation frame | |
1239 generate_fixed_frame(false); | |
1240 | |
1241 // make sure method is not native & not abstract | |
1242 #ifdef ASSERT | |
1243 __ movl(rax, access_flags); | |
1244 { | |
1245 Label L; | |
1246 __ testl(rax, JVM_ACC_NATIVE); | |
1247 __ jcc(Assembler::zero, L); | |
1248 __ stop("tried to execute native method as non-native"); | |
1249 __ bind(L); | |
1250 } | |
1251 { Label L; | |
1252 __ testl(rax, JVM_ACC_ABSTRACT); | |
1253 __ jcc(Assembler::zero, L); | |
1254 __ stop("tried to execute abstract method in interpreter"); | |
1255 __ bind(L); | |
1256 } | |
1257 #endif | |
1258 | |
1259 // Since at this point in the method invocation the exception handler | |
1260 // would try to exit the monitor of synchronized methods which hasn't | |
1261 // been entered yet, we set the thread local variable | |
1262 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
1263 // check this flag. | |
1264 | |
1265 __ get_thread(rax); | |
1266 const Address do_not_unlock_if_synchronized(rax, | |
1267 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
1268 __ movbool(do_not_unlock_if_synchronized, true); | |
1269 | |
1270 // increment invocation count & check for overflow | |
1271 Label invocation_counter_overflow; | |
1272 Label profile_method; | |
1273 Label profile_method_continue; | |
1274 if (inc_counter) { | |
1275 generate_counter_incr(&invocation_counter_overflow, &profile_method, &profile_method_continue); | |
1276 if (ProfileInterpreter) { | |
1277 __ bind(profile_method_continue); | |
1278 } | |
1279 } | |
1280 Label continue_after_compile; | |
1281 __ bind(continue_after_compile); | |
1282 | |
1283 bang_stack_shadow_pages(false); | |
1284 | |
1285 // reset the _do_not_unlock_if_synchronized flag | |
1286 __ get_thread(rax); | |
1287 __ movbool(do_not_unlock_if_synchronized, false); | |
1288 | |
1289 // check for synchronized methods | |
1290 // Must happen AFTER invocation_counter check and stack overflow check, | |
1291 // so method is not locked if overflows. | |
1292 // | |
1293 if (synchronized) { | |
1294 // Allocate monitor and lock method | |
1295 lock_method(); | |
1296 } else { | |
1297 // no synchronization necessary | |
1298 #ifdef ASSERT | |
1299 { Label L; | |
1300 __ movl(rax, access_flags); | |
1301 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
1302 __ jcc(Assembler::zero, L); | |
1303 __ stop("method needs synchronization"); | |
1304 __ bind(L); | |
1305 } | |
1306 #endif | |
1307 } | |
1308 | |
1309 // start execution | |
1310 #ifdef ASSERT | |
1311 { Label L; | |
1312 const Address monitor_block_top (rbp, | |
1313 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
304 | 1314 __ movptr(rax, monitor_block_top); |
1315 __ cmpptr(rax, rsp); | |
0 | 1316 __ jcc(Assembler::equal, L); |
1317 __ stop("broken stack frame setup in interpreter"); | |
1318 __ bind(L); | |
1319 } | |
1320 #endif | |
1321 | |
1322 // jvmti support | |
1323 __ notify_method_entry(); | |
1324 | |
1325 __ dispatch_next(vtos); | |
1326 | |
1327 // invocation counter overflow | |
1328 if (inc_counter) { | |
1329 if (ProfileInterpreter) { | |
1330 // We have decided to profile this method in the interpreter | |
1331 __ bind(profile_method); | |
1332 | |
1333 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method), rsi, true); | |
1334 | |
304 | 1335 __ movptr(rbx, Address(rbp, method_offset)); // restore methodOop |
1336 __ movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); | |
1337 __ movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); | |
0 | 1338 __ test_method_data_pointer(rax, profile_method_continue); |
304 | 1339 __ addptr(rax, in_bytes(methodDataOopDesc::data_offset())); |
1340 __ movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); | |
0 | 1341 __ jmp(profile_method_continue); |
1342 } | |
1343 // Handle overflow of counter and compile method | |
1344 __ bind(invocation_counter_overflow); | |
1345 generate_counter_overflow(&continue_after_compile); | |
1346 } | |
1347 | |
1348 return entry_point; | |
1349 } | |
1350 | |
1351 //------------------------------------------------------------------------------------------------------------------------ | |
1352 // Entry points | |
1353 // | |
1354 // Here we generate the various kind of entries into the interpreter. | |
1355 // The two main entry type are generic bytecode methods and native call method. | |
1356 // These both come in synchronized and non-synchronized versions but the | |
1357 // frame layout they create is very similar. The other method entry | |
1358 // types are really just special purpose entries that are really entry | |
1359 // and interpretation all in one. These are for trivial methods like | |
1360 // accessor, empty, or special math methods. | |
1361 // | |
1362 // When control flow reaches any of the entry types for the interpreter | |
1363 // the following holds -> | |
1364 // | |
1365 // Arguments: | |
1366 // | |
1367 // rbx,: methodOop | |
1368 // rcx: receiver | |
1369 // | |
1370 // | |
1371 // Stack layout immediately at entry | |
1372 // | |
1373 // [ return address ] <--- rsp | |
1374 // [ parameter n ] | |
1375 // ... | |
1376 // [ parameter 1 ] | |
1377 // [ expression stack ] (caller's java expression stack) | |
1378 | |
1379 // Assuming that we don't go to one of the trivial specialized | |
1380 // entries the stack will look like below when we are ready to execute | |
1381 // the first bytecode (or call the native routine). The register usage | |
1382 // will be as the template based interpreter expects (see interpreter_x86.hpp). | |
1383 // | |
1384 // local variables follow incoming parameters immediately; i.e. | |
1385 // the return address is moved to the end of the locals). | |
1386 // | |
1387 // [ monitor entry ] <--- rsp | |
1388 // ... | |
1389 // [ monitor entry ] | |
1390 // [ expr. stack bottom ] | |
1391 // [ saved rsi ] | |
1392 // [ current rdi ] | |
1393 // [ methodOop ] | |
1394 // [ saved rbp, ] <--- rbp, | |
1395 // [ return address ] | |
1396 // [ local variable m ] | |
1397 // ... | |
1398 // [ local variable 1 ] | |
1399 // [ parameter n ] | |
1400 // ... | |
1401 // [ parameter 1 ] <--- rdi | |
1402 | |
1403 address AbstractInterpreterGenerator::generate_method_entry(AbstractInterpreter::MethodKind kind) { | |
1404 // determine code generation flags | |
1405 bool synchronized = false; | |
1406 address entry_point = NULL; | |
1407 | |
1408 switch (kind) { | |
1409 case Interpreter::zerolocals : break; | |
1410 case Interpreter::zerolocals_synchronized: synchronized = true; break; | |
1411 case Interpreter::native : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(false); break; | |
1412 case Interpreter::native_synchronized : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(true); break; | |
1413 case Interpreter::empty : entry_point = ((InterpreterGenerator*)this)->generate_empty_entry(); break; | |
1414 case Interpreter::accessor : entry_point = ((InterpreterGenerator*)this)->generate_accessor_entry(); break; | |
1415 case Interpreter::abstract : entry_point = ((InterpreterGenerator*)this)->generate_abstract_entry(); break; | |
710 | 1416 case Interpreter::method_handle : entry_point = ((InterpreterGenerator*)this)->generate_method_handle_entry(); break; |
0 | 1417 |
1418 case Interpreter::java_lang_math_sin : // fall thru | |
1419 case Interpreter::java_lang_math_cos : // fall thru | |
1420 case Interpreter::java_lang_math_tan : // fall thru | |
1421 case Interpreter::java_lang_math_abs : // fall thru | |
1422 case Interpreter::java_lang_math_log : // fall thru | |
1423 case Interpreter::java_lang_math_log10 : // fall thru | |
1424 case Interpreter::java_lang_math_sqrt : entry_point = ((InterpreterGenerator*)this)->generate_math_entry(kind); break; | |
1425 default : ShouldNotReachHere(); break; | |
1426 } | |
1427 | |
1428 if (entry_point) return entry_point; | |
1429 | |
1430 return ((InterpreterGenerator*)this)->generate_normal_entry(synchronized); | |
1431 | |
1432 } | |
1433 | |
1434 // How much stack a method activation needs in words. | |
1435 int AbstractInterpreter::size_top_interpreter_activation(methodOop method) { | |
1436 | |
1437 const int stub_code = 4; // see generate_call_stub | |
1438 // Save space for one monitor to get into the interpreted method in case | |
1439 // the method is synchronized | |
1440 int monitor_size = method->is_synchronized() ? | |
1441 1*frame::interpreter_frame_monitor_size() : 0; | |
1442 | |
1443 // total overhead size: entry_size + (saved rbp, thru expr stack bottom). | |
1444 // be sure to change this if you add/subtract anything to/from the overhead area | |
1445 const int overhead_size = -frame::interpreter_frame_initial_sp_offset; | |
1446 | |
710 | 1447 const int extra_stack = methodOopDesc::extra_stack_entries(); |
1448 const int method_stack = (method->max_locals() + method->max_stack() + extra_stack) * | |
0 | 1449 Interpreter::stackElementWords(); |
1450 return overhead_size + method_stack + stub_code; | |
1451 } | |
1452 | |
1453 // asm based interpreter deoptimization helpers | |
1454 | |
1455 int AbstractInterpreter::layout_activation(methodOop method, | |
1456 int tempcount, | |
1457 int popframe_extra_args, | |
1458 int moncount, | |
1459 int callee_param_count, | |
1460 int callee_locals, | |
1461 frame* caller, | |
1462 frame* interpreter_frame, | |
1463 bool is_top_frame) { | |
1464 // Note: This calculation must exactly parallel the frame setup | |
1465 // in AbstractInterpreterGenerator::generate_method_entry. | |
1466 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
1467 // The frame interpreter_frame, if not NULL, is guaranteed to be the right size, | |
1468 // as determined by a previous call to this method. | |
1469 // It is also guaranteed to be walkable even though it is in a skeletal state | |
1470 // NOTE: return size is in words not bytes | |
1471 | |
1472 // fixed size of an interpreter frame: | |
1473 int max_locals = method->max_locals() * Interpreter::stackElementWords(); | |
1474 int extra_locals = (method->max_locals() - method->size_of_parameters()) * | |
1475 Interpreter::stackElementWords(); | |
1476 | |
1477 int overhead = frame::sender_sp_offset - frame::interpreter_frame_initial_sp_offset; | |
1478 | |
1479 // Our locals were accounted for by the caller (or last_frame_adjust on the transistion) | |
1480 // Since the callee parameters already account for the callee's params we only need to account for | |
1481 // the extra locals. | |
1482 | |
1483 | |
1484 int size = overhead + | |
1485 ((callee_locals - callee_param_count)*Interpreter::stackElementWords()) + | |
1486 (moncount*frame::interpreter_frame_monitor_size()) + | |
1487 tempcount*Interpreter::stackElementWords() + popframe_extra_args; | |
1488 | |
1489 if (interpreter_frame != NULL) { | |
1490 #ifdef ASSERT | |
1491 assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable"); | |
1492 assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)"); | |
1493 #endif | |
1494 | |
1495 interpreter_frame->interpreter_frame_set_method(method); | |
1496 // NOTE the difference in using sender_sp and interpreter_frame_sender_sp | |
1497 // interpreter_frame_sender_sp is the original sp of the caller (the unextended_sp) | |
1498 // and sender_sp is fp+8 | |
1499 intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; | |
1500 | |
1501 interpreter_frame->interpreter_frame_set_locals(locals); | |
1502 BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); | |
1503 BasicObjectLock* monbot = montop - moncount; | |
1504 interpreter_frame->interpreter_frame_set_monitor_end(monbot); | |
1505 | |
1506 // Set last_sp | |
1507 intptr_t* rsp = (intptr_t*) monbot - | |
1508 tempcount*Interpreter::stackElementWords() - | |
1509 popframe_extra_args; | |
1510 interpreter_frame->interpreter_frame_set_last_sp(rsp); | |
1511 | |
1512 // All frames but the initial (oldest) interpreter frame we fill in have a | |
1513 // value for sender_sp that allows walking the stack but isn't | |
1514 // truly correct. Correct the value here. | |
1515 | |
1516 if (extra_locals != 0 && | |
1517 interpreter_frame->sender_sp() == interpreter_frame->interpreter_frame_sender_sp() ) { | |
1518 interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + extra_locals); | |
1519 } | |
1520 *interpreter_frame->interpreter_frame_cache_addr() = | |
1521 method->constants()->cache(); | |
1522 } | |
1523 return size; | |
1524 } | |
1525 | |
1526 | |
1527 //------------------------------------------------------------------------------------------------------------------------ | |
1528 // Exceptions | |
1529 | |
1530 void TemplateInterpreterGenerator::generate_throw_exception() { | |
1531 // Entry point in previous activation (i.e., if the caller was interpreted) | |
1532 Interpreter::_rethrow_exception_entry = __ pc(); | |
1533 | |
1534 // Restore sp to interpreter_frame_last_sp even though we are going | |
1535 // to empty the expression stack for the exception processing. | |
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1536 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 1537 // rax,: exception |
1538 // rdx: return address/pc that threw exception | |
1539 __ restore_bcp(); // rsi points to call/send | |
1540 __ restore_locals(); | |
1541 | |
1542 // Entry point for exceptions thrown within interpreter code | |
1543 Interpreter::_throw_exception_entry = __ pc(); | |
1544 // expression stack is undefined here | |
1545 // rax,: exception | |
1546 // rsi: exception bcp | |
1547 __ verify_oop(rax); | |
1548 | |
1549 // expression stack must be empty before entering the VM in case of an exception | |
1550 __ empty_expression_stack(); | |
1551 __ empty_FPU_stack(); | |
1552 // find exception handler address and preserve exception oop | |
1553 __ call_VM(rdx, CAST_FROM_FN_PTR(address, InterpreterRuntime::exception_handler_for_exception), rax); | |
1554 // rax,: exception handler entry point | |
1555 // rdx: preserved exception oop | |
1556 // rsi: bcp for exception handler | |
1557 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
1558 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
1559 | |
1560 // If the exception is not handled in the current frame the frame is removed and | |
1561 // the exception is rethrown (i.e. exception continuation is _rethrow_exception). | |
1562 // | |
1563 // Note: At this point the bci is still the bxi for the instruction which caused | |
1564 // the exception and the expression stack is empty. Thus, for any VM calls | |
1565 // at this point, GC will find a legal oop map (with empty expression stack). | |
1566 | |
1567 // In current activation | |
1568 // tos: exception | |
1569 // rsi: exception bcp | |
1570 | |
1571 // | |
1572 // JVMTI PopFrame support | |
1573 // | |
1574 | |
1575 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
1576 __ empty_expression_stack(); | |
1577 __ empty_FPU_stack(); | |
1578 // Set the popframe_processing bit in pending_popframe_condition indicating that we are | |
1579 // currently handling popframe, so that call_VMs that may happen later do not trigger new | |
1580 // popframe handling cycles. | |
1581 __ get_thread(rcx); | |
1582 __ movl(rdx, Address(rcx, JavaThread::popframe_condition_offset())); | |
1583 __ orl(rdx, JavaThread::popframe_processing_bit); | |
1584 __ movl(Address(rcx, JavaThread::popframe_condition_offset()), rdx); | |
1585 | |
1586 { | |
1587 // Check to see whether we are returning to a deoptimized frame. | |
1588 // (The PopFrame call ensures that the caller of the popped frame is | |
1589 // either interpreted or compiled and deoptimizes it if compiled.) | |
1590 // In this case, we can't call dispatch_next() after the frame is | |
1591 // popped, but instead must save the incoming arguments and restore | |
1592 // them after deoptimization has occurred. | |
1593 // | |
1594 // Note that we don't compare the return PC against the | |
1595 // deoptimization blob's unpack entry because of the presence of | |
1596 // adapter frames in C2. | |
1597 Label caller_not_deoptimized; | |
304 | 1598 __ movptr(rdx, Address(rbp, frame::return_addr_offset * wordSize)); |
0 | 1599 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::interpreter_contains), rdx); |
1600 __ testl(rax, rax); | |
1601 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
1602 | |
1603 // Compute size of arguments for saving when returning to deoptimized caller | |
1604 __ get_method(rax); | |
1605 __ verify_oop(rax); | |
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1606 __ load_unsigned_short(rax, Address(rax, in_bytes(methodOopDesc::size_of_parameters_offset()))); |
304 | 1607 __ shlptr(rax, Interpreter::logStackElementSize()); |
0 | 1608 __ restore_locals(); |
304 | 1609 __ subptr(rdi, rax); |
1610 __ addptr(rdi, wordSize); | |
0 | 1611 // Save these arguments |
1612 __ get_thread(rcx); | |
1613 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::popframe_preserve_args), rcx, rax, rdi); | |
1614 | |
1615 __ remove_activation(vtos, rdx, | |
1616 /* throw_monitor_exception */ false, | |
1617 /* install_monitor_exception */ false, | |
1618 /* notify_jvmdi */ false); | |
1619 | |
1620 // Inform deoptimization that it is responsible for restoring these arguments | |
1621 __ get_thread(rcx); | |
1622 __ movl(Address(rcx, JavaThread::popframe_condition_offset()), JavaThread::popframe_force_deopt_reexecution_bit); | |
1623 | |
1624 // Continue in deoptimization handler | |
1625 __ jmp(rdx); | |
1626 | |
1627 __ bind(caller_not_deoptimized); | |
1628 } | |
1629 | |
1630 __ remove_activation(vtos, rdx, | |
1631 /* throw_monitor_exception */ false, | |
1632 /* install_monitor_exception */ false, | |
1633 /* notify_jvmdi */ false); | |
1634 | |
1635 // Finish with popframe handling | |
1636 // A previous I2C followed by a deoptimization might have moved the | |
1637 // outgoing arguments further up the stack. PopFrame expects the | |
1638 // mutations to those outgoing arguments to be preserved and other | |
1639 // constraints basically require this frame to look exactly as | |
1640 // though it had previously invoked an interpreted activation with | |
1641 // no space between the top of the expression stack (current | |
1642 // last_sp) and the top of stack. Rather than force deopt to | |
1643 // maintain this kind of invariant all the time we call a small | |
1644 // fixup routine to move the mutated arguments onto the top of our | |
1645 // expression stack if necessary. | |
304 | 1646 __ mov(rax, rsp); |
1647 __ movptr(rbx, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
0 | 1648 __ get_thread(rcx); |
1649 // PC must point into interpreter here | |
1650 __ set_last_Java_frame(rcx, noreg, rbp, __ pc()); | |
1651 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), rcx, rax, rbx); | |
1652 __ get_thread(rcx); | |
1653 __ reset_last_Java_frame(rcx, true, true); | |
1654 // Restore the last_sp and null it out | |
304 | 1655 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
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1656 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
0 | 1657 |
1658 __ restore_bcp(); | |
1659 __ restore_locals(); | |
1660 // The method data pointer was incremented already during | |
1661 // call profiling. We have to restore the mdp for the current bcp. | |
1662 if (ProfileInterpreter) { | |
1663 __ set_method_data_pointer_for_bcp(); | |
1664 } | |
1665 | |
1666 // Clear the popframe condition flag | |
1667 __ get_thread(rcx); | |
1668 __ movl(Address(rcx, JavaThread::popframe_condition_offset()), JavaThread::popframe_inactive); | |
1669 | |
1670 __ dispatch_next(vtos); | |
1671 // end of PopFrame support | |
1672 | |
1673 Interpreter::_remove_activation_entry = __ pc(); | |
1674 | |
1675 // preserve exception over this code sequence | |
1676 __ pop_ptr(rax); | |
1677 __ get_thread(rcx); | |
304 | 1678 __ movptr(Address(rcx, JavaThread::vm_result_offset()), rax); |
0 | 1679 // remove the activation (without doing throws on illegalMonitorExceptions) |
1680 __ remove_activation(vtos, rdx, false, true, false); | |
1681 // restore exception | |
1682 __ get_thread(rcx); | |
304 | 1683 __ movptr(rax, Address(rcx, JavaThread::vm_result_offset())); |
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1684 __ movptr(Address(rcx, JavaThread::vm_result_offset()), NULL_WORD); |
0 | 1685 __ verify_oop(rax); |
1686 | |
1687 // Inbetween activations - previous activation type unknown yet | |
1688 // compute continuation point - the continuation point expects | |
1689 // the following registers set up: | |
1690 // | |
1691 // rax,: exception | |
1692 // rdx: return address/pc that threw exception | |
1693 // rsp: expression stack of caller | |
1694 // rbp,: rbp, of caller | |
304 | 1695 __ push(rax); // save exception |
1696 __ push(rdx); // save return address | |
0 | 1697 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), rdx); |
304 | 1698 __ mov(rbx, rax); // save exception handler |
1699 __ pop(rdx); // restore return address | |
1700 __ pop(rax); // restore exception | |
0 | 1701 // Note that an "issuing PC" is actually the next PC after the call |
1702 __ jmp(rbx); // jump to exception handler of caller | |
1703 } | |
1704 | |
1705 | |
1706 // | |
1707 // JVMTI ForceEarlyReturn support | |
1708 // | |
1709 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
1710 address entry = __ pc(); | |
1711 | |
1712 __ restore_bcp(); | |
1713 __ restore_locals(); | |
1714 __ empty_expression_stack(); | |
1715 __ empty_FPU_stack(); | |
1716 __ load_earlyret_value(state); | |
1717 | |
1718 __ get_thread(rcx); | |
304 | 1719 __ movptr(rcx, Address(rcx, JavaThread::jvmti_thread_state_offset())); |
0 | 1720 const Address cond_addr(rcx, JvmtiThreadState::earlyret_state_offset()); |
1721 | |
1722 // Clear the earlyret state | |
1723 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
1724 | |
1725 __ remove_activation(state, rsi, | |
1726 false, /* throw_monitor_exception */ | |
1727 false, /* install_monitor_exception */ | |
1728 true); /* notify_jvmdi */ | |
1729 __ jmp(rsi); | |
1730 return entry; | |
1731 } // end of ForceEarlyReturn support | |
1732 | |
1733 | |
1734 //------------------------------------------------------------------------------------------------------------------------ | |
1735 // Helper for vtos entry point generation | |
1736 | |
1737 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) { | |
1738 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
1739 Label L; | |
1740 fep = __ pc(); __ push(ftos); __ jmp(L); | |
1741 dep = __ pc(); __ push(dtos); __ jmp(L); | |
1742 lep = __ pc(); __ push(ltos); __ jmp(L); | |
1743 aep = __ pc(); __ push(atos); __ jmp(L); | |
1744 bep = cep = sep = // fall through | |
1745 iep = __ pc(); __ push(itos); // fall through | |
1746 vep = __ pc(); __ bind(L); // fall through | |
1747 generate_and_dispatch(t); | |
1748 } | |
1749 | |
1750 //------------------------------------------------------------------------------------------------------------------------ | |
1751 // Generation of individual instructions | |
1752 | |
1753 // helpers for generate_and_dispatch | |
1754 | |
1755 | |
1756 | |
1757 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
1758 : TemplateInterpreterGenerator(code) { | |
1759 generate_all(); // down here so it can be "virtual" | |
1760 } | |
1761 | |
1762 //------------------------------------------------------------------------------------------------------------------------ | |
1763 | |
1764 // Non-product code | |
1765 #ifndef PRODUCT | |
1766 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
1767 address entry = __ pc(); | |
1768 | |
1769 // prepare expression stack | |
304 | 1770 __ pop(rcx); // pop return address so expression stack is 'pure' |
0 | 1771 __ push(state); // save tosca |
1772 | |
1773 // pass tosca registers as arguments & call tracer | |
1774 __ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), rcx, rax, rdx); | |
304 | 1775 __ mov(rcx, rax); // make sure return address is not destroyed by pop(state) |
0 | 1776 __ pop(state); // restore tosca |
1777 | |
1778 // return | |
1779 __ jmp(rcx); | |
1780 | |
1781 return entry; | |
1782 } | |
1783 | |
1784 | |
1785 void TemplateInterpreterGenerator::count_bytecode() { | |
304 | 1786 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); |
0 | 1787 } |
1788 | |
1789 | |
1790 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
304 | 1791 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); |
0 | 1792 } |
1793 | |
1794 | |
1795 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
1796 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
1797 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
1798 __ orl(rbx, ((int)t->bytecode()) << BytecodePairHistogram::log2_number_of_codes); | |
1799 ExternalAddress table((address) BytecodePairHistogram::_counters); | |
1800 Address index(noreg, rbx, Address::times_4); | |
304 | 1801 __ incrementl(ArrayAddress(table, index)); |
0 | 1802 } |
1803 | |
1804 | |
1805 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
1806 // Call a little run-time stub to avoid blow-up for each bytecode. | |
1807 // The run-time runtime saves the right registers, depending on | |
1808 // the tosca in-state for the given template. | |
1809 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
1810 "entry must have been generated"); | |
1811 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); | |
1812 } | |
1813 | |
1814 | |
1815 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
1816 Label L; | |
1817 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
1818 StopInterpreterAt); | |
1819 __ jcc(Assembler::notEqual, L); | |
1820 __ int3(); | |
1821 __ bind(L); | |
1822 } | |
1823 #endif // !PRODUCT | |
1824 #endif // CC_INTERP |