Mercurial > hg > truffle
annotate src/cpu/x86/vm/interp_masm_x86_32.cpp @ 644:c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
Summary: Code in interp_masm, stubGenerator, c1_LIRAssembler, and AD files moved into MacroAssembler.
Reviewed-by: kvn
author | jrose |
---|---|
date | Fri, 13 Mar 2009 18:39:22 -0700 |
parents | 2f2f54ed12ce |
children | bd441136a5ce |
rev | line source |
---|---|
0 | 1 /* |
337 | 2 * Copyright 1997-2008 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/_interp_masm_x86_32.cpp.incl" | |
27 | |
28 | |
29 // Implementation of InterpreterMacroAssembler | |
30 #ifdef CC_INTERP | |
31 void InterpreterMacroAssembler::get_method(Register reg) { | |
304 | 32 movptr(reg, Address(rbp, -(sizeof(BytecodeInterpreter) + 2 * wordSize))); |
33 movptr(reg, Address(reg, byte_offset_of(BytecodeInterpreter, _method))); | |
0 | 34 } |
35 #endif // CC_INTERP | |
36 | |
37 | |
38 #ifndef CC_INTERP | |
39 void InterpreterMacroAssembler::call_VM_leaf_base( | |
40 address entry_point, | |
41 int number_of_arguments | |
42 ) { | |
43 // interpreter specific | |
44 // | |
45 // Note: No need to save/restore bcp & locals (rsi & rdi) pointer | |
46 // since these are callee saved registers and no blocking/ | |
47 // GC can happen in leaf calls. | |
48 // Further Note: DO NOT save/restore bcp/locals. If a caller has | |
49 // already saved them so that it can use rsi/rdi as temporaries | |
50 // then a save/restore here will DESTROY the copy the caller | |
51 // saved! There used to be a save_bcp() that only happened in | |
52 // the ASSERT path (no restore_bcp). Which caused bizarre failures | |
53 // when jvm built with ASSERTs. | |
54 #ifdef ASSERT | |
55 { Label L; | |
304 | 56 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 57 jcc(Assembler::equal, L); |
58 stop("InterpreterMacroAssembler::call_VM_leaf_base: last_sp != NULL"); | |
59 bind(L); | |
60 } | |
61 #endif | |
62 // super call | |
63 MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments); | |
64 // interpreter specific | |
65 | |
66 // Used to ASSERT that rsi/rdi were equal to frame's bcp/locals | |
67 // but since they may not have been saved (and we don't want to | |
68 // save them here (see note above) the assert is invalid. | |
69 } | |
70 | |
71 | |
72 void InterpreterMacroAssembler::call_VM_base( | |
73 Register oop_result, | |
74 Register java_thread, | |
75 Register last_java_sp, | |
76 address entry_point, | |
77 int number_of_arguments, | |
78 bool check_exceptions | |
79 ) { | |
80 #ifdef ASSERT | |
81 { Label L; | |
304 | 82 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 83 jcc(Assembler::equal, L); |
84 stop("InterpreterMacroAssembler::call_VM_base: last_sp != NULL"); | |
85 bind(L); | |
86 } | |
87 #endif /* ASSERT */ | |
88 // interpreter specific | |
89 // | |
90 // Note: Could avoid restoring locals ptr (callee saved) - however doesn't | |
91 // really make a difference for these runtime calls, since they are | |
92 // slow anyway. Btw., bcp must be saved/restored since it may change | |
93 // due to GC. | |
94 assert(java_thread == noreg , "not expecting a precomputed java thread"); | |
95 save_bcp(); | |
96 // super call | |
97 MacroAssembler::call_VM_base(oop_result, java_thread, last_java_sp, entry_point, number_of_arguments, check_exceptions); | |
98 // interpreter specific | |
99 restore_bcp(); | |
100 restore_locals(); | |
101 } | |
102 | |
103 | |
104 void InterpreterMacroAssembler::check_and_handle_popframe(Register java_thread) { | |
105 if (JvmtiExport::can_pop_frame()) { | |
106 Label L; | |
107 // Initiate popframe handling only if it is not already being processed. If the flag | |
108 // has the popframe_processing bit set, it means that this code is called *during* popframe | |
109 // handling - we don't want to reenter. | |
110 Register pop_cond = java_thread; // Not clear if any other register is available... | |
111 movl(pop_cond, Address(java_thread, JavaThread::popframe_condition_offset())); | |
112 testl(pop_cond, JavaThread::popframe_pending_bit); | |
113 jcc(Assembler::zero, L); | |
114 testl(pop_cond, JavaThread::popframe_processing_bit); | |
115 jcc(Assembler::notZero, L); | |
116 // Call Interpreter::remove_activation_preserving_args_entry() to get the | |
117 // address of the same-named entrypoint in the generated interpreter code. | |
118 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry)); | |
119 jmp(rax); | |
120 bind(L); | |
121 get_thread(java_thread); | |
122 } | |
123 } | |
124 | |
125 | |
126 void InterpreterMacroAssembler::load_earlyret_value(TosState state) { | |
127 get_thread(rcx); | |
128 movl(rcx, Address(rcx, JavaThread::jvmti_thread_state_offset())); | |
129 const Address tos_addr (rcx, JvmtiThreadState::earlyret_tos_offset()); | |
130 const Address oop_addr (rcx, JvmtiThreadState::earlyret_oop_offset()); | |
131 const Address val_addr (rcx, JvmtiThreadState::earlyret_value_offset()); | |
132 const Address val_addr1(rcx, JvmtiThreadState::earlyret_value_offset() | |
133 + in_ByteSize(wordSize)); | |
134 switch (state) { | |
304 | 135 case atos: movptr(rax, oop_addr); |
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136 movptr(oop_addr, NULL_WORD); |
0 | 137 verify_oop(rax, state); break; |
304 | 138 case ltos: |
139 movl(rdx, val_addr1); // fall through | |
0 | 140 case btos: // fall through |
141 case ctos: // fall through | |
142 case stos: // fall through | |
143 case itos: movl(rax, val_addr); break; | |
144 case ftos: fld_s(val_addr); break; | |
145 case dtos: fld_d(val_addr); break; | |
146 case vtos: /* nothing to do */ break; | |
147 default : ShouldNotReachHere(); | |
148 } | |
149 // Clean up tos value in the thread object | |
304 | 150 movl(tos_addr, (int32_t) ilgl); |
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151 movptr(val_addr, NULL_WORD); |
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152 NOT_LP64(movptr(val_addr1, NULL_WORD)); |
0 | 153 } |
154 | |
155 | |
156 void InterpreterMacroAssembler::check_and_handle_earlyret(Register java_thread) { | |
157 if (JvmtiExport::can_force_early_return()) { | |
158 Label L; | |
159 Register tmp = java_thread; | |
304 | 160 movptr(tmp, Address(tmp, JavaThread::jvmti_thread_state_offset())); |
161 testptr(tmp, tmp); | |
0 | 162 jcc(Assembler::zero, L); // if (thread->jvmti_thread_state() == NULL) exit; |
163 | |
164 // Initiate earlyret handling only if it is not already being processed. | |
165 // If the flag has the earlyret_processing bit set, it means that this code | |
166 // is called *during* earlyret handling - we don't want to reenter. | |
167 movl(tmp, Address(tmp, JvmtiThreadState::earlyret_state_offset())); | |
168 cmpl(tmp, JvmtiThreadState::earlyret_pending); | |
169 jcc(Assembler::notEqual, L); | |
170 | |
171 // Call Interpreter::remove_activation_early_entry() to get the address of the | |
172 // same-named entrypoint in the generated interpreter code. | |
173 get_thread(java_thread); | |
304 | 174 movptr(tmp, Address(java_thread, JavaThread::jvmti_thread_state_offset())); |
0 | 175 pushl(Address(tmp, JvmtiThreadState::earlyret_tos_offset())); |
176 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), 1); | |
177 jmp(rax); | |
178 bind(L); | |
179 get_thread(java_thread); | |
180 } | |
181 } | |
182 | |
183 | |
184 void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset) { | |
185 assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode"); | |
186 movl(reg, Address(rsi, bcp_offset)); | |
304 | 187 bswapl(reg); |
0 | 188 shrl(reg, 16); |
189 } | |
190 | |
191 | |
192 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset) { | |
193 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); | |
194 assert(cache != index, "must use different registers"); | |
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195 load_unsigned_short(index, Address(rsi, bcp_offset)); |
304 | 196 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
0 | 197 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); |
304 | 198 shlptr(index, 2); // convert from field index to ConstantPoolCacheEntry index |
0 | 199 } |
200 | |
201 | |
202 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset) { | |
203 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); | |
204 assert(cache != tmp, "must use different register"); | |
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205 load_unsigned_short(tmp, Address(rsi, bcp_offset)); |
0 | 206 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); |
207 // convert from field index to ConstantPoolCacheEntry index | |
208 // and from word offset to byte offset | |
209 shll(tmp, 2 + LogBytesPerWord); | |
304 | 210 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
0 | 211 // skip past the header |
304 | 212 addptr(cache, in_bytes(constantPoolCacheOopDesc::base_offset())); |
213 addptr(cache, tmp); // construct pointer to cache entry | |
0 | 214 } |
215 | |
216 | |
217 // Generate a subtype check: branch to ok_is_subtype if sub_klass is | |
218 // a subtype of super_klass. EAX holds the super_klass. Blows ECX. | |
219 // Resets EDI to locals. Register sub_klass cannot be any of the above. | |
220 void InterpreterMacroAssembler::gen_subtype_check( Register Rsub_klass, Label &ok_is_subtype ) { | |
221 assert( Rsub_klass != rax, "rax, holds superklass" ); | |
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222 assert( Rsub_klass != rcx, "used as a temp" ); |
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223 assert( Rsub_klass != rdi, "used as a temp, restored from locals" ); |
0 | 224 |
225 // Profile the not-null value's klass. | |
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226 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi |
0 | 227 |
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228 // Do the check. |
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229 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx |
0 | 230 |
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231 // Profile the failure of the check. |
0 | 232 profile_typecheck_failed(rcx); // blows rcx |
233 } | |
234 | |
235 void InterpreterMacroAssembler::f2ieee() { | |
236 if (IEEEPrecision) { | |
237 fstp_s(Address(rsp, 0)); | |
238 fld_s(Address(rsp, 0)); | |
239 } | |
240 } | |
241 | |
242 | |
243 void InterpreterMacroAssembler::d2ieee() { | |
244 if (IEEEPrecision) { | |
245 fstp_d(Address(rsp, 0)); | |
246 fld_d(Address(rsp, 0)); | |
247 } | |
248 } | |
249 | |
250 // Java Expression Stack | |
251 | |
252 #ifdef ASSERT | |
253 void InterpreterMacroAssembler::verify_stack_tag(frame::Tag t) { | |
254 if (TaggedStackInterpreter) { | |
255 Label okay; | |
304 | 256 cmpptr(Address(rsp, wordSize), (int32_t)t); |
0 | 257 jcc(Assembler::equal, okay); |
258 // Also compare if the stack value is zero, then the tag might | |
259 // not have been set coming from deopt. | |
304 | 260 cmpptr(Address(rsp, 0), 0); |
0 | 261 jcc(Assembler::equal, okay); |
262 stop("Java Expression stack tag value is bad"); | |
263 bind(okay); | |
264 } | |
265 } | |
266 #endif // ASSERT | |
267 | |
268 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
269 debug_only(verify_stack_tag(frame::TagReference)); | |
304 | 270 pop(r); |
271 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize); | |
0 | 272 } |
273 | |
274 void InterpreterMacroAssembler::pop_ptr(Register r, Register tag) { | |
304 | 275 pop(r); |
0 | 276 // Tag may not be reference for jsr, can be returnAddress |
304 | 277 if (TaggedStackInterpreter) pop(tag); |
0 | 278 } |
279 | |
280 void InterpreterMacroAssembler::pop_i(Register r) { | |
281 debug_only(verify_stack_tag(frame::TagValue)); | |
304 | 282 pop(r); |
283 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize); | |
0 | 284 } |
285 | |
286 void InterpreterMacroAssembler::pop_l(Register lo, Register hi) { | |
287 debug_only(verify_stack_tag(frame::TagValue)); | |
304 | 288 pop(lo); |
289 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize); | |
0 | 290 debug_only(verify_stack_tag(frame::TagValue)); |
304 | 291 pop(hi); |
292 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize); | |
0 | 293 } |
294 | |
295 void InterpreterMacroAssembler::pop_f() { | |
296 debug_only(verify_stack_tag(frame::TagValue)); | |
297 fld_s(Address(rsp, 0)); | |
304 | 298 addptr(rsp, 1 * wordSize); |
299 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize); | |
0 | 300 } |
301 | |
302 void InterpreterMacroAssembler::pop_d() { | |
303 // Write double to stack contiguously and load into ST0 | |
304 pop_dtos_to_rsp(); | |
305 fld_d(Address(rsp, 0)); | |
304 | 306 addptr(rsp, 2 * wordSize); |
0 | 307 } |
308 | |
309 | |
310 // Pop the top of the java expression stack to execution stack (which | |
311 // happens to be the same place). | |
312 void InterpreterMacroAssembler::pop_dtos_to_rsp() { | |
313 if (TaggedStackInterpreter) { | |
314 // Pop double value into scratch registers | |
315 debug_only(verify_stack_tag(frame::TagValue)); | |
304 | 316 pop(rax); |
317 addptr(rsp, 1* wordSize); | |
0 | 318 debug_only(verify_stack_tag(frame::TagValue)); |
304 | 319 pop(rdx); |
320 addptr(rsp, 1* wordSize); | |
321 push(rdx); | |
322 push(rax); | |
0 | 323 } |
324 } | |
325 | |
326 void InterpreterMacroAssembler::pop_ftos_to_rsp() { | |
327 if (TaggedStackInterpreter) { | |
328 debug_only(verify_stack_tag(frame::TagValue)); | |
304 | 329 pop(rax); |
330 addptr(rsp, 1 * wordSize); | |
331 push(rax); // ftos is at rsp | |
0 | 332 } |
333 } | |
334 | |
335 void InterpreterMacroAssembler::pop(TosState state) { | |
336 switch (state) { | |
337 case atos: pop_ptr(rax); break; | |
338 case btos: // fall through | |
339 case ctos: // fall through | |
340 case stos: // fall through | |
341 case itos: pop_i(rax); break; | |
342 case ltos: pop_l(rax, rdx); break; | |
343 case ftos: pop_f(); break; | |
344 case dtos: pop_d(); break; | |
345 case vtos: /* nothing to do */ break; | |
346 default : ShouldNotReachHere(); | |
347 } | |
348 verify_oop(rax, state); | |
349 } | |
350 | |
351 void InterpreterMacroAssembler::push_ptr(Register r) { | |
304 | 352 if (TaggedStackInterpreter) push(frame::TagReference); |
353 push(r); | |
0 | 354 } |
355 | |
356 void InterpreterMacroAssembler::push_ptr(Register r, Register tag) { | |
304 | 357 if (TaggedStackInterpreter) push(tag); // tag first |
358 push(r); | |
0 | 359 } |
360 | |
361 void InterpreterMacroAssembler::push_i(Register r) { | |
304 | 362 if (TaggedStackInterpreter) push(frame::TagValue); |
363 push(r); | |
0 | 364 } |
365 | |
366 void InterpreterMacroAssembler::push_l(Register lo, Register hi) { | |
304 | 367 if (TaggedStackInterpreter) push(frame::TagValue); |
368 push(hi); | |
369 if (TaggedStackInterpreter) push(frame::TagValue); | |
370 push(lo); | |
0 | 371 } |
372 | |
373 void InterpreterMacroAssembler::push_f() { | |
304 | 374 if (TaggedStackInterpreter) push(frame::TagValue); |
0 | 375 // Do not schedule for no AGI! Never write beyond rsp! |
304 | 376 subptr(rsp, 1 * wordSize); |
0 | 377 fstp_s(Address(rsp, 0)); |
378 } | |
379 | |
380 void InterpreterMacroAssembler::push_d(Register r) { | |
381 if (TaggedStackInterpreter) { | |
382 // Double values are stored as: | |
383 // tag | |
384 // high | |
385 // tag | |
386 // low | |
304 | 387 push(frame::TagValue); |
388 subptr(rsp, 3 * wordSize); | |
0 | 389 fstp_d(Address(rsp, 0)); |
390 // move high word up to slot n-1 | |
391 movl(r, Address(rsp, 1*wordSize)); | |
392 movl(Address(rsp, 2*wordSize), r); | |
393 // move tag | |
394 movl(Address(rsp, 1*wordSize), frame::TagValue); | |
395 } else { | |
396 // Do not schedule for no AGI! Never write beyond rsp! | |
304 | 397 subptr(rsp, 2 * wordSize); |
0 | 398 fstp_d(Address(rsp, 0)); |
399 } | |
400 } | |
401 | |
402 | |
403 void InterpreterMacroAssembler::push(TosState state) { | |
404 verify_oop(rax, state); | |
405 switch (state) { | |
406 case atos: push_ptr(rax); break; | |
407 case btos: // fall through | |
408 case ctos: // fall through | |
409 case stos: // fall through | |
410 case itos: push_i(rax); break; | |
411 case ltos: push_l(rax, rdx); break; | |
412 case ftos: push_f(); break; | |
413 case dtos: push_d(rax); break; | |
414 case vtos: /* nothing to do */ break; | |
415 default : ShouldNotReachHere(); | |
416 } | |
417 } | |
418 | |
419 | |
420 // Tagged stack helpers for swap and dup | |
421 void InterpreterMacroAssembler::load_ptr_and_tag(int n, Register val, | |
422 Register tag) { | |
304 | 423 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n))); |
0 | 424 if (TaggedStackInterpreter) { |
304 | 425 movptr(tag, Address(rsp, Interpreter::expr_tag_offset_in_bytes(n))); |
0 | 426 } |
427 } | |
428 | |
429 void InterpreterMacroAssembler::store_ptr_and_tag(int n, Register val, | |
430 Register tag) { | |
304 | 431 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val); |
0 | 432 if (TaggedStackInterpreter) { |
304 | 433 movptr(Address(rsp, Interpreter::expr_tag_offset_in_bytes(n)), tag); |
0 | 434 } |
435 } | |
436 | |
437 | |
438 // Tagged local support | |
439 void InterpreterMacroAssembler::tag_local(frame::Tag tag, int n) { | |
440 if (TaggedStackInterpreter) { | |
441 if (tag == frame::TagCategory2) { | |
304 | 442 movptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n+1)), (int32_t)frame::TagValue); |
443 movptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n)), (int32_t)frame::TagValue); | |
0 | 444 } else { |
304 | 445 movptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n)), (int32_t)tag); |
0 | 446 } |
447 } | |
448 } | |
449 | |
450 void InterpreterMacroAssembler::tag_local(frame::Tag tag, Register idx) { | |
451 if (TaggedStackInterpreter) { | |
452 if (tag == frame::TagCategory2) { | |
304 | 453 movptr(Address(rdi, idx, Interpreter::stackElementScale(), |
454 Interpreter::local_tag_offset_in_bytes(1)), (int32_t)frame::TagValue); | |
455 movptr(Address(rdi, idx, Interpreter::stackElementScale(), | |
456 Interpreter::local_tag_offset_in_bytes(0)), (int32_t)frame::TagValue); | |
0 | 457 } else { |
304 | 458 movptr(Address(rdi, idx, Interpreter::stackElementScale(), |
459 Interpreter::local_tag_offset_in_bytes(0)), (int32_t)tag); | |
0 | 460 } |
461 } | |
462 } | |
463 | |
464 void InterpreterMacroAssembler::tag_local(Register tag, Register idx) { | |
465 if (TaggedStackInterpreter) { | |
466 // can only be TagValue or TagReference | |
304 | 467 movptr(Address(rdi, idx, Interpreter::stackElementScale(), |
0 | 468 Interpreter::local_tag_offset_in_bytes(0)), tag); |
469 } | |
470 } | |
471 | |
472 | |
473 void InterpreterMacroAssembler::tag_local(Register tag, int n) { | |
474 if (TaggedStackInterpreter) { | |
475 // can only be TagValue or TagReference | |
304 | 476 movptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n)), tag); |
0 | 477 } |
478 } | |
479 | |
480 #ifdef ASSERT | |
481 void InterpreterMacroAssembler::verify_local_tag(frame::Tag tag, int n) { | |
482 if (TaggedStackInterpreter) { | |
483 frame::Tag t = tag; | |
484 if (tag == frame::TagCategory2) { | |
485 Label nbl; | |
486 t = frame::TagValue; // change to what is stored in locals | |
304 | 487 cmpptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n+1)), (int32_t)t); |
0 | 488 jcc(Assembler::equal, nbl); |
489 stop("Local tag is bad for long/double"); | |
490 bind(nbl); | |
491 } | |
492 Label notBad; | |
304 | 493 cmpptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n)), (int32_t)t); |
0 | 494 jcc(Assembler::equal, notBad); |
495 // Also compare if the local value is zero, then the tag might | |
496 // not have been set coming from deopt. | |
304 | 497 cmpptr(Address(rdi, Interpreter::local_offset_in_bytes(n)), 0); |
0 | 498 jcc(Assembler::equal, notBad); |
499 stop("Local tag is bad"); | |
500 bind(notBad); | |
501 } | |
502 } | |
503 | |
504 void InterpreterMacroAssembler::verify_local_tag(frame::Tag tag, Register idx) { | |
505 if (TaggedStackInterpreter) { | |
506 frame::Tag t = tag; | |
507 if (tag == frame::TagCategory2) { | |
508 Label nbl; | |
509 t = frame::TagValue; // change to what is stored in locals | |
304 | 510 cmpptr(Address(rdi, idx, Interpreter::stackElementScale(), |
511 Interpreter::local_tag_offset_in_bytes(1)), (int32_t)t); | |
0 | 512 jcc(Assembler::equal, nbl); |
513 stop("Local tag is bad for long/double"); | |
514 bind(nbl); | |
515 } | |
516 Label notBad; | |
517 cmpl(Address(rdi, idx, Interpreter::stackElementScale(), | |
304 | 518 Interpreter::local_tag_offset_in_bytes(0)), (int32_t)t); |
0 | 519 jcc(Assembler::equal, notBad); |
520 // Also compare if the local value is zero, then the tag might | |
521 // not have been set coming from deopt. | |
304 | 522 cmpptr(Address(rdi, idx, Interpreter::stackElementScale(), |
0 | 523 Interpreter::local_offset_in_bytes(0)), 0); |
524 jcc(Assembler::equal, notBad); | |
525 stop("Local tag is bad"); | |
526 bind(notBad); | |
527 | |
528 } | |
529 } | |
530 #endif // ASSERT | |
531 | |
532 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point) { | |
533 MacroAssembler::call_VM_leaf_base(entry_point, 0); | |
534 } | |
535 | |
536 | |
537 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1) { | |
304 | 538 push(arg_1); |
0 | 539 MacroAssembler::call_VM_leaf_base(entry_point, 1); |
540 } | |
541 | |
542 | |
543 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2) { | |
304 | 544 push(arg_2); |
545 push(arg_1); | |
0 | 546 MacroAssembler::call_VM_leaf_base(entry_point, 2); |
547 } | |
548 | |
549 | |
550 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3) { | |
304 | 551 push(arg_3); |
552 push(arg_2); | |
553 push(arg_1); | |
0 | 554 MacroAssembler::call_VM_leaf_base(entry_point, 3); |
555 } | |
556 | |
557 | |
558 // Jump to from_interpreted entry of a call unless single stepping is possible | |
559 // in this thread in which case we must call the i2i entry | |
560 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) { | |
561 // set sender sp | |
304 | 562 lea(rsi, Address(rsp, wordSize)); |
0 | 563 // record last_sp |
304 | 564 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), rsi); |
0 | 565 |
566 if (JvmtiExport::can_post_interpreter_events()) { | |
567 Label run_compiled_code; | |
568 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
569 // compiled code in threads for which the event is enabled. Check here for | |
570 // interp_only_mode if these events CAN be enabled. | |
571 get_thread(temp); | |
572 // interp_only is an int, on little endian it is sufficient to test the byte only | |
573 // Is a cmpl faster (ce | |
574 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0); | |
575 jcc(Assembler::zero, run_compiled_code); | |
576 jmp(Address(method, methodOopDesc::interpreter_entry_offset())); | |
577 bind(run_compiled_code); | |
578 } | |
579 | |
580 jmp(Address(method, methodOopDesc::from_interpreted_offset())); | |
581 | |
582 } | |
583 | |
584 | |
585 // The following two routines provide a hook so that an implementation | |
586 // can schedule the dispatch in two parts. Intel does not do this. | |
587 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) { | |
588 // Nothing Intel-specific to be done here. | |
589 } | |
590 | |
591 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) { | |
592 dispatch_next(state, step); | |
593 } | |
594 | |
595 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table, | |
596 bool verifyoop) { | |
597 verify_FPU(1, state); | |
598 if (VerifyActivationFrameSize) { | |
599 Label L; | |
304 | 600 mov(rcx, rbp); |
601 subptr(rcx, rsp); | |
0 | 602 int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize; |
304 | 603 cmpptr(rcx, min_frame_size); |
0 | 604 jcc(Assembler::greaterEqual, L); |
605 stop("broken stack frame"); | |
606 bind(L); | |
607 } | |
608 if (verifyoop) verify_oop(rax, state); | |
304 | 609 Address index(noreg, rbx, Address::times_ptr); |
0 | 610 ExternalAddress tbl((address)table); |
611 ArrayAddress dispatch(tbl, index); | |
612 jump(dispatch); | |
613 } | |
614 | |
615 | |
616 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
617 dispatch_base(state, Interpreter::dispatch_table(state)); | |
618 } | |
619 | |
620 | |
621 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) { | |
622 dispatch_base(state, Interpreter::normal_table(state)); | |
623 } | |
624 | |
625 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) { | |
626 dispatch_base(state, Interpreter::normal_table(state), false); | |
627 } | |
628 | |
629 | |
630 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) { | |
631 // load next bytecode (load before advancing rsi to prevent AGI) | |
632 load_unsigned_byte(rbx, Address(rsi, step)); | |
633 // advance rsi | |
634 increment(rsi, step); | |
635 dispatch_base(state, Interpreter::dispatch_table(state)); | |
636 } | |
637 | |
638 | |
639 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
640 // load current bytecode | |
641 load_unsigned_byte(rbx, Address(rsi, 0)); | |
642 dispatch_base(state, table); | |
643 } | |
644 | |
645 // remove activation | |
646 // | |
647 // Unlock the receiver if this is a synchronized method. | |
648 // Unlock any Java monitors from syncronized blocks. | |
649 // Remove the activation from the stack. | |
650 // | |
651 // If there are locked Java monitors | |
652 // If throw_monitor_exception | |
653 // throws IllegalMonitorStateException | |
654 // Else if install_monitor_exception | |
655 // installs IllegalMonitorStateException | |
656 // Else | |
657 // no error processing | |
658 void InterpreterMacroAssembler::remove_activation(TosState state, Register ret_addr, | |
659 bool throw_monitor_exception, | |
660 bool install_monitor_exception, | |
661 bool notify_jvmdi) { | |
662 // Note: Registers rax, rdx and FPU ST(0) may be in use for the result | |
663 // check if synchronized method | |
664 Label unlocked, unlock, no_unlock; | |
665 | |
666 get_thread(rcx); | |
667 const Address do_not_unlock_if_synchronized(rcx, | |
668 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
669 | |
670 movbool(rbx, do_not_unlock_if_synchronized); | |
304 | 671 mov(rdi,rbx); |
0 | 672 movbool(do_not_unlock_if_synchronized, false); // reset the flag |
673 | |
304 | 674 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); // get method access flags |
0 | 675 movl(rcx, Address(rbx, methodOopDesc::access_flags_offset())); |
676 | |
677 testl(rcx, JVM_ACC_SYNCHRONIZED); | |
678 jcc(Assembler::zero, unlocked); | |
679 | |
680 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
681 // is set. | |
304 | 682 mov(rcx,rdi); |
0 | 683 testbool(rcx); |
684 jcc(Assembler::notZero, no_unlock); | |
685 | |
686 // unlock monitor | |
687 push(state); // save result | |
688 | |
689 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
690 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
691 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
304 | 692 lea (rdx, monitor); // address of first monitor |
0 | 693 |
304 | 694 movptr (rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
695 testptr(rax, rax); | |
696 jcc (Assembler::notZero, unlock); | |
0 | 697 |
698 pop(state); | |
699 if (throw_monitor_exception) { | |
700 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
701 | |
702 // Entry already unlocked, need to throw exception | |
703 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
704 should_not_reach_here(); | |
705 } else { | |
706 // Monitor already unlocked during a stack unroll. | |
707 // If requested, install an illegal_monitor_state_exception. | |
708 // Continue with stack unrolling. | |
709 if (install_monitor_exception) { | |
710 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
711 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
712 } | |
713 jmp(unlocked); | |
714 } | |
715 | |
716 bind(unlock); | |
717 unlock_object(rdx); | |
718 pop(state); | |
719 | |
720 // Check that for block-structured locking (i.e., that all locked objects has been unlocked) | |
721 bind(unlocked); | |
722 | |
723 // rax, rdx: Might contain return value | |
724 | |
725 // Check that all monitors are unlocked | |
726 { | |
727 Label loop, exception, entry, restart; | |
728 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
729 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
730 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
731 | |
732 bind(restart); | |
304 | 733 movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
734 lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
0 | 735 jmp(entry); |
736 | |
737 // Entry already locked, need to throw exception | |
738 bind(exception); | |
739 | |
740 if (throw_monitor_exception) { | |
741 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
742 | |
743 // Throw exception | |
744 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
745 should_not_reach_here(); | |
746 } else { | |
747 // Stack unrolling. Unlock object and install illegal_monitor_exception | |
748 // Unlock does not block, so don't have to worry about the frame | |
749 | |
750 push(state); | |
304 | 751 mov(rdx, rcx); |
0 | 752 unlock_object(rdx); |
753 pop(state); | |
754 | |
755 if (install_monitor_exception) { | |
756 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
757 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
758 } | |
759 | |
760 jmp(restart); | |
761 } | |
762 | |
763 bind(loop); | |
304 | 764 cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
0 | 765 jcc(Assembler::notEqual, exception); |
766 | |
304 | 767 addptr(rcx, entry_size); // otherwise advance to next entry |
0 | 768 bind(entry); |
304 | 769 cmpptr(rcx, rbx); // check if bottom reached |
0 | 770 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
771 } | |
772 | |
773 bind(no_unlock); | |
774 | |
775 // jvmti support | |
776 if (notify_jvmdi) { | |
777 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA | |
778 } else { | |
779 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA | |
780 } | |
781 | |
782 // remove activation | |
304 | 783 movptr(rbx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 784 leave(); // remove frame anchor |
304 | 785 pop(ret_addr); // get return address |
786 mov(rsp, rbx); // set sp to sender sp | |
0 | 787 if (UseSSE) { |
788 // float and double are returned in xmm register in SSE-mode | |
789 if (state == ftos && UseSSE >= 1) { | |
304 | 790 subptr(rsp, wordSize); |
0 | 791 fstp_s(Address(rsp, 0)); |
792 movflt(xmm0, Address(rsp, 0)); | |
304 | 793 addptr(rsp, wordSize); |
0 | 794 } else if (state == dtos && UseSSE >= 2) { |
304 | 795 subptr(rsp, 2*wordSize); |
0 | 796 fstp_d(Address(rsp, 0)); |
797 movdbl(xmm0, Address(rsp, 0)); | |
304 | 798 addptr(rsp, 2*wordSize); |
0 | 799 } |
800 } | |
801 } | |
802 | |
803 #endif /* !CC_INTERP */ | |
804 | |
805 | |
806 // Lock object | |
807 // | |
808 // Argument: rdx : Points to BasicObjectLock to be used for locking. Must | |
809 // be initialized with object to lock | |
810 void InterpreterMacroAssembler::lock_object(Register lock_reg) { | |
811 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
812 | |
813 if (UseHeavyMonitors) { | |
814 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
815 } else { | |
816 | |
817 Label done; | |
818 | |
819 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
820 const Register obj_reg = rcx; // Will contain the oop | |
821 | |
822 const int obj_offset = BasicObjectLock::obj_offset_in_bytes(); | |
823 const int lock_offset = BasicObjectLock::lock_offset_in_bytes (); | |
824 const int mark_offset = lock_offset + BasicLock::displaced_header_offset_in_bytes(); | |
825 | |
826 Label slow_case; | |
827 | |
828 // Load object pointer into obj_reg %rcx | |
304 | 829 movptr(obj_reg, Address(lock_reg, obj_offset)); |
0 | 830 |
831 if (UseBiasedLocking) { | |
832 // Note: we use noreg for the temporary register since it's hard | |
833 // to come up with a free register on all incoming code paths | |
834 biased_locking_enter(lock_reg, obj_reg, swap_reg, noreg, false, done, &slow_case); | |
835 } | |
836 | |
837 // Load immediate 1 into swap_reg %rax, | |
304 | 838 movptr(swap_reg, (int32_t)1); |
0 | 839 |
840 // Load (object->mark() | 1) into swap_reg %rax, | |
304 | 841 orptr(swap_reg, Address(obj_reg, 0)); |
0 | 842 |
843 // Save (object->mark() | 1) into BasicLock's displaced header | |
304 | 844 movptr(Address(lock_reg, mark_offset), swap_reg); |
0 | 845 |
846 assert(lock_offset == 0, "displached header must be first word in BasicObjectLock"); | |
847 if (os::is_MP()) { | |
848 lock(); | |
849 } | |
304 | 850 cmpxchgptr(lock_reg, Address(obj_reg, 0)); |
0 | 851 if (PrintBiasedLockingStatistics) { |
852 cond_inc32(Assembler::zero, | |
853 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
854 } | |
855 jcc(Assembler::zero, done); | |
856 | |
857 // Test if the oopMark is an obvious stack pointer, i.e., | |
858 // 1) (mark & 3) == 0, and | |
859 // 2) rsp <= mark < mark + os::pagesize() | |
860 // | |
861 // These 3 tests can be done by evaluating the following | |
862 // expression: ((mark - rsp) & (3 - os::vm_page_size())), | |
863 // assuming both stack pointer and pagesize have their | |
864 // least significant 2 bits clear. | |
865 // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg | |
304 | 866 subptr(swap_reg, rsp); |
867 andptr(swap_reg, 3 - os::vm_page_size()); | |
0 | 868 |
869 // Save the test result, for recursive case, the result is zero | |
304 | 870 movptr(Address(lock_reg, mark_offset), swap_reg); |
0 | 871 |
872 if (PrintBiasedLockingStatistics) { | |
873 cond_inc32(Assembler::zero, | |
874 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
875 } | |
876 jcc(Assembler::zero, done); | |
877 | |
878 bind(slow_case); | |
879 | |
880 // Call the runtime routine for slow case | |
881 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
882 | |
883 bind(done); | |
884 } | |
885 } | |
886 | |
887 | |
888 // Unlocks an object. Used in monitorexit bytecode and remove_activation. | |
889 // | |
890 // Argument: rdx : Points to BasicObjectLock structure for lock | |
891 // Throw an IllegalMonitorException if object is not locked by current thread | |
892 // | |
893 // Uses: rax, rbx, rcx, rdx | |
894 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
895 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
896 | |
897 if (UseHeavyMonitors) { | |
898 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); | |
899 } else { | |
900 Label done; | |
901 | |
902 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
903 const Register header_reg = rbx; // Will contain the old oopMark | |
904 const Register obj_reg = rcx; // Will contain the oop | |
905 | |
906 save_bcp(); // Save in case of exception | |
907 | |
908 // Convert from BasicObjectLock structure to object and BasicLock structure | |
909 // Store the BasicLock address into %rax, | |
304 | 910 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes())); |
0 | 911 |
912 // Load oop into obj_reg(%rcx) | |
304 | 913 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ())); |
0 | 914 |
915 // Free entry | |
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916 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD); |
0 | 917 |
918 if (UseBiasedLocking) { | |
919 biased_locking_exit(obj_reg, header_reg, done); | |
920 } | |
921 | |
922 // Load the old header from BasicLock structure | |
304 | 923 movptr(header_reg, Address(swap_reg, BasicLock::displaced_header_offset_in_bytes())); |
0 | 924 |
925 // Test for recursion | |
304 | 926 testptr(header_reg, header_reg); |
0 | 927 |
928 // zero for recursive case | |
929 jcc(Assembler::zero, done); | |
930 | |
931 // Atomic swap back the old header | |
932 if (os::is_MP()) lock(); | |
304 | 933 cmpxchgptr(header_reg, Address(obj_reg, 0)); |
0 | 934 |
935 // zero for recursive case | |
936 jcc(Assembler::zero, done); | |
937 | |
938 // Call the runtime routine for slow case. | |
304 | 939 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), obj_reg); // restore obj |
0 | 940 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); |
941 | |
942 bind(done); | |
943 | |
944 restore_bcp(); | |
945 } | |
946 } | |
947 | |
948 | |
949 #ifndef CC_INTERP | |
950 | |
951 // Test ImethodDataPtr. If it is null, continue at the specified label | |
952 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) { | |
953 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 954 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize)); |
955 testptr(mdp, mdp); | |
0 | 956 jcc(Assembler::zero, zero_continue); |
957 } | |
958 | |
959 | |
960 // Set the method data pointer for the current bcp. | |
961 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
962 assert(ProfileInterpreter, "must be profiling interpreter"); | |
963 Label zero_continue; | |
304 | 964 push(rax); |
965 push(rbx); | |
0 | 966 |
967 get_method(rbx); | |
968 // Test MDO to avoid the call if it is NULL. | |
304 | 969 movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
970 testptr(rax, rax); | |
0 | 971 jcc(Assembler::zero, zero_continue); |
972 | |
973 // rbx,: method | |
974 // rsi: bcp | |
975 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, rsi); | |
976 // rax,: mdi | |
977 | |
304 | 978 movptr(rbx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
979 testptr(rbx, rbx); | |
0 | 980 jcc(Assembler::zero, zero_continue); |
304 | 981 addptr(rbx, in_bytes(methodDataOopDesc::data_offset())); |
982 addptr(rbx, rax); | |
983 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rbx); | |
0 | 984 |
985 bind(zero_continue); | |
304 | 986 pop(rbx); |
987 pop(rax); | |
0 | 988 } |
989 | |
990 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
991 assert(ProfileInterpreter, "must be profiling interpreter"); | |
992 #ifdef ASSERT | |
993 Label verify_continue; | |
304 | 994 push(rax); |
995 push(rbx); | |
996 push(rcx); | |
997 push(rdx); | |
0 | 998 test_method_data_pointer(rcx, verify_continue); // If mdp is zero, continue |
999 get_method(rbx); | |
1000 | |
1001 // If the mdp is valid, it will point to a DataLayout header which is | |
1002 // consistent with the bcp. The converse is highly probable also. | |
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1003 load_unsigned_short(rdx, Address(rcx, in_bytes(DataLayout::bci_offset()))); |
304 | 1004 addptr(rdx, Address(rbx, methodOopDesc::const_offset())); |
1005 lea(rdx, Address(rdx, constMethodOopDesc::codes_offset())); | |
1006 cmpptr(rdx, rsi); | |
0 | 1007 jcc(Assembler::equal, verify_continue); |
1008 // rbx,: method | |
1009 // rsi: bcp | |
1010 // rcx: mdp | |
1011 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), rbx, rsi, rcx); | |
1012 bind(verify_continue); | |
304 | 1013 pop(rdx); |
1014 pop(rcx); | |
1015 pop(rbx); | |
1016 pop(rax); | |
0 | 1017 #endif // ASSERT |
1018 } | |
1019 | |
1020 | |
1021 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, int constant, Register value) { | |
304 | 1022 // %%% this seems to be used to store counter data which is surely 32bits |
1023 // however 64bit side stores 64 bits which seems wrong | |
0 | 1024 assert(ProfileInterpreter, "must be profiling interpreter"); |
1025 Address data(mdp_in, constant); | |
304 | 1026 movptr(data, value); |
0 | 1027 } |
1028 | |
1029 | |
1030 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
1031 int constant, | |
1032 bool decrement) { | |
1033 // Counter address | |
1034 Address data(mdp_in, constant); | |
1035 | |
1036 increment_mdp_data_at(data, decrement); | |
1037 } | |
1038 | |
1039 | |
1040 void InterpreterMacroAssembler::increment_mdp_data_at(Address data, | |
1041 bool decrement) { | |
1042 | |
1043 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
1044 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1045 | |
304 | 1046 // %%% 64bit treats this as 64 bit which seems unlikely |
0 | 1047 if (decrement) { |
1048 // Decrement the register. Set condition codes. | |
1049 addl(data, -DataLayout::counter_increment); | |
1050 // If the decrement causes the counter to overflow, stay negative | |
1051 Label L; | |
1052 jcc(Assembler::negative, L); | |
1053 addl(data, DataLayout::counter_increment); | |
1054 bind(L); | |
1055 } else { | |
1056 assert(DataLayout::counter_increment == 1, | |
1057 "flow-free idiom only works with 1"); | |
1058 // Increment the register. Set carry flag. | |
1059 addl(data, DataLayout::counter_increment); | |
1060 // If the increment causes the counter to overflow, pull back by 1. | |
1061 sbbl(data, 0); | |
1062 } | |
1063 } | |
1064 | |
1065 | |
1066 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
1067 Register reg, | |
1068 int constant, | |
1069 bool decrement) { | |
1070 Address data(mdp_in, reg, Address::times_1, constant); | |
1071 | |
1072 increment_mdp_data_at(data, decrement); | |
1073 } | |
1074 | |
1075 | |
1076 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, int flag_byte_constant) { | |
1077 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1078 int header_offset = in_bytes(DataLayout::header_offset()); | |
1079 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant); | |
1080 // Set the flag | |
1081 orl(Address(mdp_in, header_offset), header_bits); | |
1082 } | |
1083 | |
1084 | |
1085 | |
1086 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in, | |
1087 int offset, | |
1088 Register value, | |
1089 Register test_value_out, | |
1090 Label& not_equal_continue) { | |
1091 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1092 if (test_value_out == noreg) { | |
304 | 1093 cmpptr(value, Address(mdp_in, offset)); |
0 | 1094 } else { |
1095 // Put the test value into a register, so caller can use it: | |
304 | 1096 movptr(test_value_out, Address(mdp_in, offset)); |
1097 cmpptr(test_value_out, value); | |
0 | 1098 } |
1099 jcc(Assembler::notEqual, not_equal_continue); | |
1100 } | |
1101 | |
1102 | |
1103 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp) { | |
1104 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1105 Address disp_address(mdp_in, offset_of_disp); | |
304 | 1106 addptr(mdp_in,disp_address); |
1107 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 1108 } |
1109 | |
1110 | |
1111 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp) { | |
1112 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1113 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp); | |
304 | 1114 addptr(mdp_in, disp_address); |
1115 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 1116 } |
1117 | |
1118 | |
1119 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) { | |
1120 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 1121 addptr(mdp_in, constant); |
1122 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 1123 } |
1124 | |
1125 | |
1126 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) { | |
1127 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 1128 push(return_bci); // save/restore across call_VM |
0 | 1129 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); |
304 | 1130 pop(return_bci); |
0 | 1131 } |
1132 | |
1133 | |
1134 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) { | |
1135 if (ProfileInterpreter) { | |
1136 Label profile_continue; | |
1137 | |
1138 // If no method data exists, go to profile_continue. | |
1139 // Otherwise, assign to mdp | |
1140 test_method_data_pointer(mdp, profile_continue); | |
1141 | |
1142 // We are taking a branch. Increment the taken count. | |
1143 // We inline increment_mdp_data_at to return bumped_count in a register | |
1144 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset())); | |
1145 Address data(mdp, in_bytes(JumpData::taken_offset())); | |
304 | 1146 |
1147 // %%% 64bit treats these cells as 64 bit but they seem to be 32 bit | |
0 | 1148 movl(bumped_count,data); |
1149 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
1150 addl(bumped_count, DataLayout::counter_increment); | |
1151 sbbl(bumped_count, 0); | |
1152 movl(data,bumped_count); // Store back out | |
1153 | |
1154 // The method data pointer needs to be updated to reflect the new target. | |
1155 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset())); | |
1156 bind (profile_continue); | |
1157 } | |
1158 } | |
1159 | |
1160 | |
1161 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) { | |
1162 if (ProfileInterpreter) { | |
1163 Label profile_continue; | |
1164 | |
1165 // If no method data exists, go to profile_continue. | |
1166 test_method_data_pointer(mdp, profile_continue); | |
1167 | |
1168 // We are taking a branch. Increment the not taken count. | |
1169 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset())); | |
1170 | |
1171 // The method data pointer needs to be updated to correspond to the next bytecode | |
1172 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size())); | |
1173 bind (profile_continue); | |
1174 } | |
1175 } | |
1176 | |
1177 | |
1178 void InterpreterMacroAssembler::profile_call(Register mdp) { | |
1179 if (ProfileInterpreter) { | |
1180 Label profile_continue; | |
1181 | |
1182 // If no method data exists, go to profile_continue. | |
1183 test_method_data_pointer(mdp, profile_continue); | |
1184 | |
1185 // We are making a call. Increment the count. | |
1186 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1187 | |
1188 // The method data pointer needs to be updated to reflect the new target. | |
1189 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size())); | |
1190 bind (profile_continue); | |
1191 } | |
1192 } | |
1193 | |
1194 | |
1195 void InterpreterMacroAssembler::profile_final_call(Register mdp) { | |
1196 if (ProfileInterpreter) { | |
1197 Label profile_continue; | |
1198 | |
1199 // If no method data exists, go to profile_continue. | |
1200 test_method_data_pointer(mdp, profile_continue); | |
1201 | |
1202 // We are making a call. Increment the count. | |
1203 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1204 | |
1205 // The method data pointer needs to be updated to reflect the new target. | |
1206 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size())); | |
1207 bind (profile_continue); | |
1208 } | |
1209 } | |
1210 | |
1211 | |
1212 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, Register mdp, Register reg2) { | |
1213 if (ProfileInterpreter) { | |
1214 Label profile_continue; | |
1215 | |
1216 // If no method data exists, go to profile_continue. | |
1217 test_method_data_pointer(mdp, profile_continue); | |
1218 | |
1219 // We are making a call. Increment the count. | |
1220 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1221 | |
1222 // Record the receiver type. | |
1223 record_klass_in_profile(receiver, mdp, reg2); | |
1224 | |
1225 // The method data pointer needs to be updated to reflect the new target. | |
1226 update_mdp_by_constant(mdp, | |
1227 in_bytes(VirtualCallData:: | |
1228 virtual_call_data_size())); | |
1229 bind(profile_continue); | |
1230 } | |
1231 } | |
1232 | |
1233 | |
1234 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
1235 Register receiver, Register mdp, | |
1236 Register reg2, | |
1237 int start_row, Label& done) { | |
1238 int last_row = VirtualCallData::row_limit() - 1; | |
1239 assert(start_row <= last_row, "must be work left to do"); | |
1240 // Test this row for both the receiver and for null. | |
1241 // Take any of three different outcomes: | |
1242 // 1. found receiver => increment count and goto done | |
1243 // 2. found null => keep looking for case 1, maybe allocate this cell | |
1244 // 3. found something else => keep looking for cases 1 and 2 | |
1245 // Case 3 is handled by a recursive call. | |
1246 for (int row = start_row; row <= last_row; row++) { | |
1247 Label next_test; | |
1248 bool test_for_null_also = (row == start_row); | |
1249 | |
1250 // See if the receiver is receiver[n]. | |
1251 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
1252 test_mdp_data_at(mdp, recvr_offset, receiver, | |
1253 (test_for_null_also ? reg2 : noreg), | |
1254 next_test); | |
1255 // (Reg2 now contains the receiver from the CallData.) | |
1256 | |
1257 // The receiver is receiver[n]. Increment count[n]. | |
1258 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
1259 increment_mdp_data_at(mdp, count_offset); | |
1260 jmp(done); | |
1261 bind(next_test); | |
1262 | |
1263 if (row == start_row) { | |
1264 // Failed the equality check on receiver[n]... Test for null. | |
304 | 1265 testptr(reg2, reg2); |
0 | 1266 if (start_row == last_row) { |
1267 // The only thing left to do is handle the null case. | |
1268 jcc(Assembler::notZero, done); | |
1269 break; | |
1270 } | |
1271 // Since null is rare, make it be the branch-taken case. | |
1272 Label found_null; | |
1273 jcc(Assembler::zero, found_null); | |
1274 | |
1275 // Put all the "Case 3" tests here. | |
1276 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done); | |
1277 | |
1278 // Found a null. Keep searching for a matching receiver, | |
1279 // but remember that this is an empty (unused) slot. | |
1280 bind(found_null); | |
1281 } | |
1282 } | |
1283 | |
1284 // In the fall-through case, we found no matching receiver, but we | |
1285 // observed the receiver[start_row] is NULL. | |
1286 | |
1287 // Fill in the receiver field and increment the count. | |
1288 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
1289 set_mdp_data_at(mdp, recvr_offset, receiver); | |
1290 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
304 | 1291 movptr(reg2, (int32_t)DataLayout::counter_increment); |
0 | 1292 set_mdp_data_at(mdp, count_offset, reg2); |
1293 jmp(done); | |
1294 } | |
1295 | |
1296 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
1297 Register mdp, | |
1298 Register reg2) { | |
1299 assert(ProfileInterpreter, "must be profiling"); | |
1300 Label done; | |
1301 | |
1302 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done); | |
1303 | |
1304 bind (done); | |
1305 } | |
1306 | |
1307 void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) { | |
1308 if (ProfileInterpreter) { | |
1309 Label profile_continue; | |
1310 uint row; | |
1311 | |
1312 // If no method data exists, go to profile_continue. | |
1313 test_method_data_pointer(mdp, profile_continue); | |
1314 | |
1315 // Update the total ret count. | |
1316 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1317 | |
1318 for (row = 0; row < RetData::row_limit(); row++) { | |
1319 Label next_test; | |
1320 | |
1321 // See if return_bci is equal to bci[n]: | |
1322 test_mdp_data_at(mdp, in_bytes(RetData::bci_offset(row)), return_bci, | |
1323 noreg, next_test); | |
1324 | |
1325 // return_bci is equal to bci[n]. Increment the count. | |
1326 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row))); | |
1327 | |
1328 // The method data pointer needs to be updated to reflect the new target. | |
1329 update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row))); | |
1330 jmp(profile_continue); | |
1331 bind(next_test); | |
1332 } | |
1333 | |
1334 update_mdp_for_ret(return_bci); | |
1335 | |
1336 bind (profile_continue); | |
1337 } | |
1338 } | |
1339 | |
1340 | |
1341 void InterpreterMacroAssembler::profile_null_seen(Register mdp) { | |
1342 if (ProfileInterpreter) { | |
1343 Label profile_continue; | |
1344 | |
1345 // If no method data exists, go to profile_continue. | |
1346 test_method_data_pointer(mdp, profile_continue); | |
1347 | |
1348 // The method data pointer needs to be updated. | |
1349 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1350 if (TypeProfileCasts) { | |
1351 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1352 } | |
1353 update_mdp_by_constant(mdp, mdp_delta); | |
1354 | |
1355 bind (profile_continue); | |
1356 } | |
1357 } | |
1358 | |
1359 | |
1360 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) { | |
1361 if (ProfileInterpreter && TypeProfileCasts) { | |
1362 Label profile_continue; | |
1363 | |
1364 // If no method data exists, go to profile_continue. | |
1365 test_method_data_pointer(mdp, profile_continue); | |
1366 | |
1367 int count_offset = in_bytes(CounterData::count_offset()); | |
1368 // Back up the address, since we have already bumped the mdp. | |
1369 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
1370 | |
1371 // *Decrement* the counter. We expect to see zero or small negatives. | |
1372 increment_mdp_data_at(mdp, count_offset, true); | |
1373 | |
1374 bind (profile_continue); | |
1375 } | |
1376 } | |
1377 | |
1378 | |
1379 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) | |
1380 { | |
1381 if (ProfileInterpreter) { | |
1382 Label profile_continue; | |
1383 | |
1384 // If no method data exists, go to profile_continue. | |
1385 test_method_data_pointer(mdp, profile_continue); | |
1386 | |
1387 // The method data pointer needs to be updated. | |
1388 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1389 if (TypeProfileCasts) { | |
1390 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1391 | |
1392 // Record the object type. | |
1393 record_klass_in_profile(klass, mdp, reg2); | |
1394 assert(reg2 == rdi, "we know how to fix this blown reg"); | |
1395 restore_locals(); // Restore EDI | |
1396 } | |
1397 update_mdp_by_constant(mdp, mdp_delta); | |
1398 | |
1399 bind(profile_continue); | |
1400 } | |
1401 } | |
1402 | |
1403 | |
1404 void InterpreterMacroAssembler::profile_switch_default(Register mdp) { | |
1405 if (ProfileInterpreter) { | |
1406 Label profile_continue; | |
1407 | |
1408 // If no method data exists, go to profile_continue. | |
1409 test_method_data_pointer(mdp, profile_continue); | |
1410 | |
1411 // Update the default case count | |
1412 increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset())); | |
1413 | |
1414 // The method data pointer needs to be updated. | |
1415 update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset())); | |
1416 | |
1417 bind (profile_continue); | |
1418 } | |
1419 } | |
1420 | |
1421 | |
1422 void InterpreterMacroAssembler::profile_switch_case(Register index, Register mdp, Register reg2) { | |
1423 if (ProfileInterpreter) { | |
1424 Label profile_continue; | |
1425 | |
1426 // If no method data exists, go to profile_continue. | |
1427 test_method_data_pointer(mdp, profile_continue); | |
1428 | |
1429 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes() | |
304 | 1430 movptr(reg2, (int32_t)in_bytes(MultiBranchData::per_case_size())); |
1431 // index is positive and so should have correct value if this code were | |
1432 // used on 64bits | |
1433 imulptr(index, reg2); | |
1434 addptr(index, in_bytes(MultiBranchData::case_array_offset())); | |
0 | 1435 |
1436 // Update the case count | |
1437 increment_mdp_data_at(mdp, index, in_bytes(MultiBranchData::relative_count_offset())); | |
1438 | |
1439 // The method data pointer needs to be updated. | |
1440 update_mdp_by_offset(mdp, index, in_bytes(MultiBranchData::relative_displacement_offset())); | |
1441 | |
1442 bind (profile_continue); | |
1443 } | |
1444 } | |
1445 | |
1446 #endif // !CC_INTERP | |
1447 | |
1448 | |
1449 | |
1450 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { | |
1451 if (state == atos) MacroAssembler::verify_oop(reg); | |
1452 } | |
1453 | |
1454 | |
1455 #ifndef CC_INTERP | |
1456 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
1457 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth); | |
1458 } | |
1459 | |
1460 #endif /* CC_INTERP */ | |
1461 | |
1462 | |
1463 void InterpreterMacroAssembler::notify_method_entry() { | |
1464 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
1465 // track stack depth. If it is possible to enter interp_only_mode we add | |
1466 // the code to check if the event should be sent. | |
1467 if (JvmtiExport::can_post_interpreter_events()) { | |
1468 Label L; | |
1469 get_thread(rcx); | |
1470 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
1471 testl(rcx,rcx); | |
1472 jcc(Assembler::zero, L); | |
1473 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry)); | |
1474 bind(L); | |
1475 } | |
1476 | |
1477 { | |
1478 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
1479 get_thread(rcx); | |
1480 get_method(rbx); | |
1481 call_VM_leaf( | |
1482 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), rcx, rbx); | |
1483 } | |
610
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1484 |
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1485 // RedefineClasses() tracing support for obsolete method entry |
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1486 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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1487 get_thread(rcx); |
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1488 get_method(rbx); |
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1489 call_VM_leaf( |
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1490 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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1491 rcx, rbx); |
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1492 } |
0 | 1493 } |
1494 | |
1495 | |
1496 void InterpreterMacroAssembler::notify_method_exit( | |
1497 TosState state, NotifyMethodExitMode mode) { | |
1498 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
1499 // track stack depth. If it is possible to enter interp_only_mode we add | |
1500 // the code to check if the event should be sent. | |
1501 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
1502 Label L; | |
1503 // Note: frame::interpreter_frame_result has a dependency on how the | |
1504 // method result is saved across the call to post_method_exit. If this | |
1505 // is changed then the interpreter_frame_result implementation will | |
1506 // need to be updated too. | |
1507 | |
1508 // For c++ interpreter the result is always stored at a known location in the frame | |
1509 // template interpreter will leave it on the top of the stack. | |
1510 NOT_CC_INTERP(push(state);) | |
1511 get_thread(rcx); | |
1512 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
1513 testl(rcx,rcx); | |
1514 jcc(Assembler::zero, L); | |
1515 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
1516 bind(L); | |
1517 NOT_CC_INTERP(pop(state);) | |
1518 } | |
1519 | |
1520 { | |
1521 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
304 | 1522 NOT_CC_INTERP(push(state)); |
0 | 1523 get_thread(rbx); |
1524 get_method(rcx); | |
1525 call_VM_leaf( | |
1526 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
1527 rbx, rcx); | |
304 | 1528 NOT_CC_INTERP(pop(state)); |
0 | 1529 } |
1530 } |