Mercurial > hg > truffle
annotate src/cpu/x86/vm/interp_masm_x86_32.cpp @ 2480:4b95bbb36464
7035870: JSR 292: Zero support
Summary: This adds support for JSR 292 to Zero.
Reviewed-by: twisti
Contributed-by: Gary Benson <gbenson@redhat.com>
author | twisti |
---|---|
date | Tue, 12 Apr 2011 02:40:23 -0700 |
parents | 38fea01eb669 |
children | 2e038ad0c1d0 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "interp_masm_x86_32.hpp" | |
27 #include "interpreter/interpreter.hpp" | |
28 #include "interpreter/interpreterRuntime.hpp" | |
29 #include "oops/arrayOop.hpp" | |
30 #include "oops/markOop.hpp" | |
31 #include "oops/methodDataOop.hpp" | |
32 #include "oops/methodOop.hpp" | |
33 #include "prims/jvmtiExport.hpp" | |
34 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
35 #include "prims/jvmtiThreadState.hpp" | |
36 #include "runtime/basicLock.hpp" | |
37 #include "runtime/biasedLocking.hpp" | |
38 #include "runtime/sharedRuntime.hpp" | |
39 #ifdef TARGET_OS_FAMILY_linux | |
40 # include "thread_linux.inline.hpp" | |
41 #endif | |
42 #ifdef TARGET_OS_FAMILY_solaris | |
43 # include "thread_solaris.inline.hpp" | |
44 #endif | |
45 #ifdef TARGET_OS_FAMILY_windows | |
46 # include "thread_windows.inline.hpp" | |
47 #endif | |
0 | 48 |
49 | |
50 // Implementation of InterpreterMacroAssembler | |
51 #ifdef CC_INTERP | |
52 void InterpreterMacroAssembler::get_method(Register reg) { | |
304 | 53 movptr(reg, Address(rbp, -(sizeof(BytecodeInterpreter) + 2 * wordSize))); |
54 movptr(reg, Address(reg, byte_offset_of(BytecodeInterpreter, _method))); | |
0 | 55 } |
56 #endif // CC_INTERP | |
57 | |
58 | |
59 #ifndef CC_INTERP | |
60 void InterpreterMacroAssembler::call_VM_leaf_base( | |
61 address entry_point, | |
62 int number_of_arguments | |
63 ) { | |
64 // interpreter specific | |
65 // | |
66 // Note: No need to save/restore bcp & locals (rsi & rdi) pointer | |
67 // since these are callee saved registers and no blocking/ | |
68 // GC can happen in leaf calls. | |
69 // Further Note: DO NOT save/restore bcp/locals. If a caller has | |
70 // already saved them so that it can use rsi/rdi as temporaries | |
71 // then a save/restore here will DESTROY the copy the caller | |
72 // saved! There used to be a save_bcp() that only happened in | |
73 // the ASSERT path (no restore_bcp). Which caused bizarre failures | |
74 // when jvm built with ASSERTs. | |
75 #ifdef ASSERT | |
76 { Label L; | |
304 | 77 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 78 jcc(Assembler::equal, L); |
79 stop("InterpreterMacroAssembler::call_VM_leaf_base: last_sp != NULL"); | |
80 bind(L); | |
81 } | |
82 #endif | |
83 // super call | |
84 MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments); | |
85 // interpreter specific | |
86 | |
87 // Used to ASSERT that rsi/rdi were equal to frame's bcp/locals | |
88 // but since they may not have been saved (and we don't want to | |
89 // save them here (see note above) the assert is invalid. | |
90 } | |
91 | |
92 | |
93 void InterpreterMacroAssembler::call_VM_base( | |
94 Register oop_result, | |
95 Register java_thread, | |
96 Register last_java_sp, | |
97 address entry_point, | |
98 int number_of_arguments, | |
99 bool check_exceptions | |
100 ) { | |
101 #ifdef ASSERT | |
102 { Label L; | |
304 | 103 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 104 jcc(Assembler::equal, L); |
105 stop("InterpreterMacroAssembler::call_VM_base: last_sp != NULL"); | |
106 bind(L); | |
107 } | |
108 #endif /* ASSERT */ | |
109 // interpreter specific | |
110 // | |
111 // Note: Could avoid restoring locals ptr (callee saved) - however doesn't | |
112 // really make a difference for these runtime calls, since they are | |
113 // slow anyway. Btw., bcp must be saved/restored since it may change | |
114 // due to GC. | |
115 assert(java_thread == noreg , "not expecting a precomputed java thread"); | |
116 save_bcp(); | |
117 // super call | |
118 MacroAssembler::call_VM_base(oop_result, java_thread, last_java_sp, entry_point, number_of_arguments, check_exceptions); | |
119 // interpreter specific | |
120 restore_bcp(); | |
121 restore_locals(); | |
122 } | |
123 | |
124 | |
125 void InterpreterMacroAssembler::check_and_handle_popframe(Register java_thread) { | |
126 if (JvmtiExport::can_pop_frame()) { | |
127 Label L; | |
128 // Initiate popframe handling only if it is not already being processed. If the flag | |
129 // has the popframe_processing bit set, it means that this code is called *during* popframe | |
130 // handling - we don't want to reenter. | |
131 Register pop_cond = java_thread; // Not clear if any other register is available... | |
132 movl(pop_cond, Address(java_thread, JavaThread::popframe_condition_offset())); | |
133 testl(pop_cond, JavaThread::popframe_pending_bit); | |
134 jcc(Assembler::zero, L); | |
135 testl(pop_cond, JavaThread::popframe_processing_bit); | |
136 jcc(Assembler::notZero, L); | |
137 // Call Interpreter::remove_activation_preserving_args_entry() to get the | |
138 // address of the same-named entrypoint in the generated interpreter code. | |
139 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry)); | |
140 jmp(rax); | |
141 bind(L); | |
142 get_thread(java_thread); | |
143 } | |
144 } | |
145 | |
146 | |
147 void InterpreterMacroAssembler::load_earlyret_value(TosState state) { | |
148 get_thread(rcx); | |
149 movl(rcx, Address(rcx, JavaThread::jvmti_thread_state_offset())); | |
150 const Address tos_addr (rcx, JvmtiThreadState::earlyret_tos_offset()); | |
151 const Address oop_addr (rcx, JvmtiThreadState::earlyret_oop_offset()); | |
152 const Address val_addr (rcx, JvmtiThreadState::earlyret_value_offset()); | |
153 const Address val_addr1(rcx, JvmtiThreadState::earlyret_value_offset() | |
154 + in_ByteSize(wordSize)); | |
155 switch (state) { | |
304 | 156 case atos: movptr(rax, oop_addr); |
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157 movptr(oop_addr, NULL_WORD); |
0 | 158 verify_oop(rax, state); break; |
304 | 159 case ltos: |
160 movl(rdx, val_addr1); // fall through | |
0 | 161 case btos: // fall through |
162 case ctos: // fall through | |
163 case stos: // fall through | |
164 case itos: movl(rax, val_addr); break; | |
165 case ftos: fld_s(val_addr); break; | |
166 case dtos: fld_d(val_addr); break; | |
167 case vtos: /* nothing to do */ break; | |
168 default : ShouldNotReachHere(); | |
169 } | |
170 // Clean up tos value in the thread object | |
304 | 171 movl(tos_addr, (int32_t) ilgl); |
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172 movptr(val_addr, NULL_WORD); |
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173 NOT_LP64(movptr(val_addr1, NULL_WORD)); |
0 | 174 } |
175 | |
176 | |
177 void InterpreterMacroAssembler::check_and_handle_earlyret(Register java_thread) { | |
178 if (JvmtiExport::can_force_early_return()) { | |
179 Label L; | |
180 Register tmp = java_thread; | |
304 | 181 movptr(tmp, Address(tmp, JavaThread::jvmti_thread_state_offset())); |
182 testptr(tmp, tmp); | |
0 | 183 jcc(Assembler::zero, L); // if (thread->jvmti_thread_state() == NULL) exit; |
184 | |
185 // Initiate earlyret handling only if it is not already being processed. | |
186 // If the flag has the earlyret_processing bit set, it means that this code | |
187 // is called *during* earlyret handling - we don't want to reenter. | |
188 movl(tmp, Address(tmp, JvmtiThreadState::earlyret_state_offset())); | |
189 cmpl(tmp, JvmtiThreadState::earlyret_pending); | |
190 jcc(Assembler::notEqual, L); | |
191 | |
192 // Call Interpreter::remove_activation_early_entry() to get the address of the | |
193 // same-named entrypoint in the generated interpreter code. | |
194 get_thread(java_thread); | |
304 | 195 movptr(tmp, Address(java_thread, JavaThread::jvmti_thread_state_offset())); |
0 | 196 pushl(Address(tmp, JvmtiThreadState::earlyret_tos_offset())); |
197 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), 1); | |
198 jmp(rax); | |
199 bind(L); | |
200 get_thread(java_thread); | |
201 } | |
202 } | |
203 | |
204 | |
205 void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset) { | |
206 assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode"); | |
207 movl(reg, Address(rsi, bcp_offset)); | |
304 | 208 bswapl(reg); |
0 | 209 shrl(reg, 16); |
210 } | |
211 | |
212 | |
1565 | 213 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register reg, int bcp_offset, size_t index_size) { |
0 | 214 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); |
1565 | 215 if (index_size == sizeof(u2)) { |
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216 load_unsigned_short(reg, Address(rsi, bcp_offset)); |
1565 | 217 } else if (index_size == sizeof(u4)) { |
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218 assert(EnableInvokeDynamic, "giant index used only for JSR 292"); |
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219 movl(reg, Address(rsi, bcp_offset)); |
1108 | 220 // Check if the secondary index definition is still ~x, otherwise |
221 // we have to change the following assembler code to calculate the | |
222 // plain index. | |
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223 assert(constantPoolCacheOopDesc::decode_secondary_index(~123) == 123, "else change next line"); |
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224 notl(reg); // convert to plain index |
1565 | 225 } else if (index_size == sizeof(u1)) { |
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226 assert(EnableInvokeDynamic, "tiny index used only for JSR 292"); |
1565 | 227 load_unsigned_byte(reg, Address(rsi, bcp_offset)); |
228 } else { | |
229 ShouldNotReachHere(); | |
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230 } |
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231 } |
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232 |
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233 |
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234 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register index, |
1565 | 235 int bcp_offset, size_t index_size) { |
0 | 236 assert(cache != index, "must use different registers"); |
1565 | 237 get_cache_index_at_bcp(index, bcp_offset, index_size); |
304 | 238 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
0 | 239 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); |
304 | 240 shlptr(index, 2); // convert from field index to ConstantPoolCacheEntry index |
0 | 241 } |
242 | |
243 | |
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244 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp, |
1565 | 245 int bcp_offset, size_t index_size) { |
0 | 246 assert(cache != tmp, "must use different register"); |
1565 | 247 get_cache_index_at_bcp(tmp, bcp_offset, index_size); |
0 | 248 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); |
249 // convert from field index to ConstantPoolCacheEntry index | |
250 // and from word offset to byte offset | |
251 shll(tmp, 2 + LogBytesPerWord); | |
304 | 252 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
0 | 253 // skip past the header |
304 | 254 addptr(cache, in_bytes(constantPoolCacheOopDesc::base_offset())); |
255 addptr(cache, tmp); // construct pointer to cache entry | |
0 | 256 } |
257 | |
258 | |
259 // Generate a subtype check: branch to ok_is_subtype if sub_klass is | |
260 // a subtype of super_klass. EAX holds the super_klass. Blows ECX. | |
261 // Resets EDI to locals. Register sub_klass cannot be any of the above. | |
262 void InterpreterMacroAssembler::gen_subtype_check( Register Rsub_klass, Label &ok_is_subtype ) { | |
263 assert( Rsub_klass != rax, "rax, holds superklass" ); | |
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264 assert( Rsub_klass != rcx, "used as a temp" ); |
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265 assert( Rsub_klass != rdi, "used as a temp, restored from locals" ); |
0 | 266 |
267 // Profile the not-null value's klass. | |
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268 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi |
0 | 269 |
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270 // Do the check. |
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271 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx |
0 | 272 |
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273 // Profile the failure of the check. |
0 | 274 profile_typecheck_failed(rcx); // blows rcx |
275 } | |
276 | |
277 void InterpreterMacroAssembler::f2ieee() { | |
278 if (IEEEPrecision) { | |
279 fstp_s(Address(rsp, 0)); | |
280 fld_s(Address(rsp, 0)); | |
281 } | |
282 } | |
283 | |
284 | |
285 void InterpreterMacroAssembler::d2ieee() { | |
286 if (IEEEPrecision) { | |
287 fstp_d(Address(rsp, 0)); | |
288 fld_d(Address(rsp, 0)); | |
289 } | |
290 } | |
291 | |
292 // Java Expression Stack | |
293 | |
294 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
304 | 295 pop(r); |
0 | 296 } |
297 | |
298 void InterpreterMacroAssembler::pop_i(Register r) { | |
304 | 299 pop(r); |
0 | 300 } |
301 | |
302 void InterpreterMacroAssembler::pop_l(Register lo, Register hi) { | |
304 | 303 pop(lo); |
304 pop(hi); | |
0 | 305 } |
306 | |
307 void InterpreterMacroAssembler::pop_f() { | |
308 fld_s(Address(rsp, 0)); | |
304 | 309 addptr(rsp, 1 * wordSize); |
0 | 310 } |
311 | |
312 void InterpreterMacroAssembler::pop_d() { | |
313 fld_d(Address(rsp, 0)); | |
304 | 314 addptr(rsp, 2 * wordSize); |
0 | 315 } |
316 | |
317 | |
318 void InterpreterMacroAssembler::pop(TosState state) { | |
319 switch (state) { | |
320 case atos: pop_ptr(rax); break; | |
321 case btos: // fall through | |
322 case ctos: // fall through | |
323 case stos: // fall through | |
324 case itos: pop_i(rax); break; | |
325 case ltos: pop_l(rax, rdx); break; | |
326 case ftos: pop_f(); break; | |
327 case dtos: pop_d(); break; | |
328 case vtos: /* nothing to do */ break; | |
329 default : ShouldNotReachHere(); | |
330 } | |
331 verify_oop(rax, state); | |
332 } | |
333 | |
334 void InterpreterMacroAssembler::push_ptr(Register r) { | |
304 | 335 push(r); |
0 | 336 } |
337 | |
338 void InterpreterMacroAssembler::push_i(Register r) { | |
304 | 339 push(r); |
0 | 340 } |
341 | |
342 void InterpreterMacroAssembler::push_l(Register lo, Register hi) { | |
304 | 343 push(hi); |
344 push(lo); | |
0 | 345 } |
346 | |
347 void InterpreterMacroAssembler::push_f() { | |
348 // Do not schedule for no AGI! Never write beyond rsp! | |
304 | 349 subptr(rsp, 1 * wordSize); |
0 | 350 fstp_s(Address(rsp, 0)); |
351 } | |
352 | |
353 void InterpreterMacroAssembler::push_d(Register r) { | |
1506 | 354 // Do not schedule for no AGI! Never write beyond rsp! |
355 subptr(rsp, 2 * wordSize); | |
356 fstp_d(Address(rsp, 0)); | |
0 | 357 } |
358 | |
359 | |
360 void InterpreterMacroAssembler::push(TosState state) { | |
361 verify_oop(rax, state); | |
362 switch (state) { | |
363 case atos: push_ptr(rax); break; | |
364 case btos: // fall through | |
365 case ctos: // fall through | |
366 case stos: // fall through | |
367 case itos: push_i(rax); break; | |
368 case ltos: push_l(rax, rdx); break; | |
369 case ftos: push_f(); break; | |
370 case dtos: push_d(rax); break; | |
371 case vtos: /* nothing to do */ break; | |
372 default : ShouldNotReachHere(); | |
373 } | |
374 } | |
375 | |
376 | |
1506 | 377 // Helpers for swap and dup |
378 void InterpreterMacroAssembler::load_ptr(int n, Register val) { | |
304 | 379 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n))); |
0 | 380 } |
381 | |
1506 | 382 void InterpreterMacroAssembler::store_ptr(int n, Register val) { |
383 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val); | |
0 | 384 } |
385 | |
386 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point) { | |
387 MacroAssembler::call_VM_leaf_base(entry_point, 0); | |
388 } | |
389 | |
390 | |
391 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1) { | |
304 | 392 push(arg_1); |
0 | 393 MacroAssembler::call_VM_leaf_base(entry_point, 1); |
394 } | |
395 | |
396 | |
397 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2) { | |
304 | 398 push(arg_2); |
399 push(arg_1); | |
0 | 400 MacroAssembler::call_VM_leaf_base(entry_point, 2); |
401 } | |
402 | |
403 | |
404 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3) { | |
304 | 405 push(arg_3); |
406 push(arg_2); | |
407 push(arg_1); | |
0 | 408 MacroAssembler::call_VM_leaf_base(entry_point, 3); |
409 } | |
410 | |
411 | |
710 | 412 void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() { |
0 | 413 // set sender sp |
304 | 414 lea(rsi, Address(rsp, wordSize)); |
0 | 415 // record last_sp |
304 | 416 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), rsi); |
710 | 417 } |
418 | |
419 | |
420 // Jump to from_interpreted entry of a call unless single stepping is possible | |
421 // in this thread in which case we must call the i2i entry | |
422 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) { | |
423 prepare_to_jump_from_interpreted(); | |
0 | 424 |
425 if (JvmtiExport::can_post_interpreter_events()) { | |
426 Label run_compiled_code; | |
427 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
428 // compiled code in threads for which the event is enabled. Check here for | |
429 // interp_only_mode if these events CAN be enabled. | |
430 get_thread(temp); | |
431 // interp_only is an int, on little endian it is sufficient to test the byte only | |
432 // Is a cmpl faster (ce | |
433 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0); | |
434 jcc(Assembler::zero, run_compiled_code); | |
435 jmp(Address(method, methodOopDesc::interpreter_entry_offset())); | |
436 bind(run_compiled_code); | |
437 } | |
438 | |
439 jmp(Address(method, methodOopDesc::from_interpreted_offset())); | |
440 | |
441 } | |
442 | |
443 | |
444 // The following two routines provide a hook so that an implementation | |
445 // can schedule the dispatch in two parts. Intel does not do this. | |
446 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) { | |
447 // Nothing Intel-specific to be done here. | |
448 } | |
449 | |
450 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) { | |
451 dispatch_next(state, step); | |
452 } | |
453 | |
454 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table, | |
455 bool verifyoop) { | |
456 verify_FPU(1, state); | |
457 if (VerifyActivationFrameSize) { | |
458 Label L; | |
304 | 459 mov(rcx, rbp); |
460 subptr(rcx, rsp); | |
0 | 461 int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize; |
304 | 462 cmpptr(rcx, min_frame_size); |
0 | 463 jcc(Assembler::greaterEqual, L); |
464 stop("broken stack frame"); | |
465 bind(L); | |
466 } | |
467 if (verifyoop) verify_oop(rax, state); | |
304 | 468 Address index(noreg, rbx, Address::times_ptr); |
0 | 469 ExternalAddress tbl((address)table); |
470 ArrayAddress dispatch(tbl, index); | |
471 jump(dispatch); | |
472 } | |
473 | |
474 | |
475 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
476 dispatch_base(state, Interpreter::dispatch_table(state)); | |
477 } | |
478 | |
479 | |
480 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) { | |
481 dispatch_base(state, Interpreter::normal_table(state)); | |
482 } | |
483 | |
484 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) { | |
485 dispatch_base(state, Interpreter::normal_table(state), false); | |
486 } | |
487 | |
488 | |
489 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) { | |
490 // load next bytecode (load before advancing rsi to prevent AGI) | |
491 load_unsigned_byte(rbx, Address(rsi, step)); | |
492 // advance rsi | |
493 increment(rsi, step); | |
494 dispatch_base(state, Interpreter::dispatch_table(state)); | |
495 } | |
496 | |
497 | |
498 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
499 // load current bytecode | |
500 load_unsigned_byte(rbx, Address(rsi, 0)); | |
501 dispatch_base(state, table); | |
502 } | |
503 | |
504 // remove activation | |
505 // | |
506 // Unlock the receiver if this is a synchronized method. | |
507 // Unlock any Java monitors from syncronized blocks. | |
508 // Remove the activation from the stack. | |
509 // | |
510 // If there are locked Java monitors | |
511 // If throw_monitor_exception | |
512 // throws IllegalMonitorStateException | |
513 // Else if install_monitor_exception | |
514 // installs IllegalMonitorStateException | |
515 // Else | |
516 // no error processing | |
517 void InterpreterMacroAssembler::remove_activation(TosState state, Register ret_addr, | |
518 bool throw_monitor_exception, | |
519 bool install_monitor_exception, | |
520 bool notify_jvmdi) { | |
521 // Note: Registers rax, rdx and FPU ST(0) may be in use for the result | |
522 // check if synchronized method | |
523 Label unlocked, unlock, no_unlock; | |
524 | |
525 get_thread(rcx); | |
526 const Address do_not_unlock_if_synchronized(rcx, | |
527 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
528 | |
529 movbool(rbx, do_not_unlock_if_synchronized); | |
304 | 530 mov(rdi,rbx); |
0 | 531 movbool(do_not_unlock_if_synchronized, false); // reset the flag |
532 | |
304 | 533 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); // get method access flags |
0 | 534 movl(rcx, Address(rbx, methodOopDesc::access_flags_offset())); |
535 | |
536 testl(rcx, JVM_ACC_SYNCHRONIZED); | |
537 jcc(Assembler::zero, unlocked); | |
538 | |
539 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
540 // is set. | |
304 | 541 mov(rcx,rdi); |
0 | 542 testbool(rcx); |
543 jcc(Assembler::notZero, no_unlock); | |
544 | |
545 // unlock monitor | |
546 push(state); // save result | |
547 | |
548 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
549 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
550 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
304 | 551 lea (rdx, monitor); // address of first monitor |
0 | 552 |
304 | 553 movptr (rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
554 testptr(rax, rax); | |
555 jcc (Assembler::notZero, unlock); | |
0 | 556 |
557 pop(state); | |
558 if (throw_monitor_exception) { | |
559 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
560 | |
561 // Entry already unlocked, need to throw exception | |
562 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
563 should_not_reach_here(); | |
564 } else { | |
565 // Monitor already unlocked during a stack unroll. | |
566 // If requested, install an illegal_monitor_state_exception. | |
567 // Continue with stack unrolling. | |
568 if (install_monitor_exception) { | |
569 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
570 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
571 } | |
572 jmp(unlocked); | |
573 } | |
574 | |
575 bind(unlock); | |
576 unlock_object(rdx); | |
577 pop(state); | |
578 | |
579 // Check that for block-structured locking (i.e., that all locked objects has been unlocked) | |
580 bind(unlocked); | |
581 | |
582 // rax, rdx: Might contain return value | |
583 | |
584 // Check that all monitors are unlocked | |
585 { | |
586 Label loop, exception, entry, restart; | |
587 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
588 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
589 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
590 | |
591 bind(restart); | |
304 | 592 movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
593 lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
0 | 594 jmp(entry); |
595 | |
596 // Entry already locked, need to throw exception | |
597 bind(exception); | |
598 | |
599 if (throw_monitor_exception) { | |
600 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
601 | |
602 // Throw exception | |
603 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
604 should_not_reach_here(); | |
605 } else { | |
606 // Stack unrolling. Unlock object and install illegal_monitor_exception | |
607 // Unlock does not block, so don't have to worry about the frame | |
608 | |
609 push(state); | |
304 | 610 mov(rdx, rcx); |
0 | 611 unlock_object(rdx); |
612 pop(state); | |
613 | |
614 if (install_monitor_exception) { | |
615 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
616 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
617 } | |
618 | |
619 jmp(restart); | |
620 } | |
621 | |
622 bind(loop); | |
304 | 623 cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
0 | 624 jcc(Assembler::notEqual, exception); |
625 | |
304 | 626 addptr(rcx, entry_size); // otherwise advance to next entry |
0 | 627 bind(entry); |
304 | 628 cmpptr(rcx, rbx); // check if bottom reached |
0 | 629 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
630 } | |
631 | |
632 bind(no_unlock); | |
633 | |
634 // jvmti support | |
635 if (notify_jvmdi) { | |
636 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA | |
637 } else { | |
638 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA | |
639 } | |
640 | |
641 // remove activation | |
304 | 642 movptr(rbx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 643 leave(); // remove frame anchor |
304 | 644 pop(ret_addr); // get return address |
645 mov(rsp, rbx); // set sp to sender sp | |
0 | 646 if (UseSSE) { |
647 // float and double are returned in xmm register in SSE-mode | |
648 if (state == ftos && UseSSE >= 1) { | |
304 | 649 subptr(rsp, wordSize); |
0 | 650 fstp_s(Address(rsp, 0)); |
651 movflt(xmm0, Address(rsp, 0)); | |
304 | 652 addptr(rsp, wordSize); |
0 | 653 } else if (state == dtos && UseSSE >= 2) { |
304 | 654 subptr(rsp, 2*wordSize); |
0 | 655 fstp_d(Address(rsp, 0)); |
656 movdbl(xmm0, Address(rsp, 0)); | |
304 | 657 addptr(rsp, 2*wordSize); |
0 | 658 } |
659 } | |
660 } | |
661 | |
662 #endif /* !CC_INTERP */ | |
663 | |
664 | |
665 // Lock object | |
666 // | |
667 // Argument: rdx : Points to BasicObjectLock to be used for locking. Must | |
668 // be initialized with object to lock | |
669 void InterpreterMacroAssembler::lock_object(Register lock_reg) { | |
670 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
671 | |
672 if (UseHeavyMonitors) { | |
673 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
674 } else { | |
675 | |
676 Label done; | |
677 | |
678 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
679 const Register obj_reg = rcx; // Will contain the oop | |
680 | |
681 const int obj_offset = BasicObjectLock::obj_offset_in_bytes(); | |
682 const int lock_offset = BasicObjectLock::lock_offset_in_bytes (); | |
683 const int mark_offset = lock_offset + BasicLock::displaced_header_offset_in_bytes(); | |
684 | |
685 Label slow_case; | |
686 | |
687 // Load object pointer into obj_reg %rcx | |
304 | 688 movptr(obj_reg, Address(lock_reg, obj_offset)); |
0 | 689 |
690 if (UseBiasedLocking) { | |
691 // Note: we use noreg for the temporary register since it's hard | |
692 // to come up with a free register on all incoming code paths | |
693 biased_locking_enter(lock_reg, obj_reg, swap_reg, noreg, false, done, &slow_case); | |
694 } | |
695 | |
696 // Load immediate 1 into swap_reg %rax, | |
304 | 697 movptr(swap_reg, (int32_t)1); |
0 | 698 |
699 // Load (object->mark() | 1) into swap_reg %rax, | |
304 | 700 orptr(swap_reg, Address(obj_reg, 0)); |
0 | 701 |
702 // Save (object->mark() | 1) into BasicLock's displaced header | |
304 | 703 movptr(Address(lock_reg, mark_offset), swap_reg); |
0 | 704 |
705 assert(lock_offset == 0, "displached header must be first word in BasicObjectLock"); | |
706 if (os::is_MP()) { | |
707 lock(); | |
708 } | |
304 | 709 cmpxchgptr(lock_reg, Address(obj_reg, 0)); |
0 | 710 if (PrintBiasedLockingStatistics) { |
711 cond_inc32(Assembler::zero, | |
712 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
713 } | |
714 jcc(Assembler::zero, done); | |
715 | |
716 // Test if the oopMark is an obvious stack pointer, i.e., | |
717 // 1) (mark & 3) == 0, and | |
718 // 2) rsp <= mark < mark + os::pagesize() | |
719 // | |
720 // These 3 tests can be done by evaluating the following | |
721 // expression: ((mark - rsp) & (3 - os::vm_page_size())), | |
722 // assuming both stack pointer and pagesize have their | |
723 // least significant 2 bits clear. | |
724 // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg | |
304 | 725 subptr(swap_reg, rsp); |
726 andptr(swap_reg, 3 - os::vm_page_size()); | |
0 | 727 |
728 // Save the test result, for recursive case, the result is zero | |
304 | 729 movptr(Address(lock_reg, mark_offset), swap_reg); |
0 | 730 |
731 if (PrintBiasedLockingStatistics) { | |
732 cond_inc32(Assembler::zero, | |
733 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
734 } | |
735 jcc(Assembler::zero, done); | |
736 | |
737 bind(slow_case); | |
738 | |
739 // Call the runtime routine for slow case | |
740 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
741 | |
742 bind(done); | |
743 } | |
744 } | |
745 | |
746 | |
747 // Unlocks an object. Used in monitorexit bytecode and remove_activation. | |
748 // | |
749 // Argument: rdx : Points to BasicObjectLock structure for lock | |
750 // Throw an IllegalMonitorException if object is not locked by current thread | |
751 // | |
752 // Uses: rax, rbx, rcx, rdx | |
753 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
754 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
755 | |
756 if (UseHeavyMonitors) { | |
757 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); | |
758 } else { | |
759 Label done; | |
760 | |
761 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
762 const Register header_reg = rbx; // Will contain the old oopMark | |
763 const Register obj_reg = rcx; // Will contain the oop | |
764 | |
765 save_bcp(); // Save in case of exception | |
766 | |
767 // Convert from BasicObjectLock structure to object and BasicLock structure | |
768 // Store the BasicLock address into %rax, | |
304 | 769 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes())); |
0 | 770 |
771 // Load oop into obj_reg(%rcx) | |
304 | 772 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ())); |
0 | 773 |
774 // Free entry | |
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775 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD); |
0 | 776 |
777 if (UseBiasedLocking) { | |
778 biased_locking_exit(obj_reg, header_reg, done); | |
779 } | |
780 | |
781 // Load the old header from BasicLock structure | |
304 | 782 movptr(header_reg, Address(swap_reg, BasicLock::displaced_header_offset_in_bytes())); |
0 | 783 |
784 // Test for recursion | |
304 | 785 testptr(header_reg, header_reg); |
0 | 786 |
787 // zero for recursive case | |
788 jcc(Assembler::zero, done); | |
789 | |
790 // Atomic swap back the old header | |
791 if (os::is_MP()) lock(); | |
304 | 792 cmpxchgptr(header_reg, Address(obj_reg, 0)); |
0 | 793 |
794 // zero for recursive case | |
795 jcc(Assembler::zero, done); | |
796 | |
797 // Call the runtime routine for slow case. | |
304 | 798 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), obj_reg); // restore obj |
0 | 799 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); |
800 | |
801 bind(done); | |
802 | |
803 restore_bcp(); | |
804 } | |
805 } | |
806 | |
807 | |
808 #ifndef CC_INTERP | |
809 | |
810 // Test ImethodDataPtr. If it is null, continue at the specified label | |
811 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) { | |
812 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 813 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize)); |
814 testptr(mdp, mdp); | |
0 | 815 jcc(Assembler::zero, zero_continue); |
816 } | |
817 | |
818 | |
819 // Set the method data pointer for the current bcp. | |
820 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
821 assert(ProfileInterpreter, "must be profiling interpreter"); | |
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822 Label set_mdp; |
304 | 823 push(rax); |
824 push(rbx); | |
0 | 825 |
826 get_method(rbx); | |
827 // Test MDO to avoid the call if it is NULL. | |
304 | 828 movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
829 testptr(rax, rax); | |
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830 jcc(Assembler::zero, set_mdp); |
0 | 831 // rbx,: method |
832 // rsi: bcp | |
833 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, rsi); | |
834 // rax,: mdi | |
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835 // mdo is guaranteed to be non-zero here, we checked for it before the call. |
304 | 836 movptr(rbx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
837 addptr(rbx, in_bytes(methodDataOopDesc::data_offset())); | |
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838 addptr(rax, rbx); |
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839 bind(set_mdp); |
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840 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); |
304 | 841 pop(rbx); |
842 pop(rax); | |
0 | 843 } |
844 | |
845 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
846 assert(ProfileInterpreter, "must be profiling interpreter"); | |
847 #ifdef ASSERT | |
848 Label verify_continue; | |
304 | 849 push(rax); |
850 push(rbx); | |
851 push(rcx); | |
852 push(rdx); | |
0 | 853 test_method_data_pointer(rcx, verify_continue); // If mdp is zero, continue |
854 get_method(rbx); | |
855 | |
856 // If the mdp is valid, it will point to a DataLayout header which is | |
857 // consistent with the bcp. The converse is highly probable also. | |
622
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858 load_unsigned_short(rdx, Address(rcx, in_bytes(DataLayout::bci_offset()))); |
304 | 859 addptr(rdx, Address(rbx, methodOopDesc::const_offset())); |
860 lea(rdx, Address(rdx, constMethodOopDesc::codes_offset())); | |
861 cmpptr(rdx, rsi); | |
0 | 862 jcc(Assembler::equal, verify_continue); |
863 // rbx,: method | |
864 // rsi: bcp | |
865 // rcx: mdp | |
866 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), rbx, rsi, rcx); | |
867 bind(verify_continue); | |
304 | 868 pop(rdx); |
869 pop(rcx); | |
870 pop(rbx); | |
871 pop(rax); | |
0 | 872 #endif // ASSERT |
873 } | |
874 | |
875 | |
876 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, int constant, Register value) { | |
304 | 877 // %%% this seems to be used to store counter data which is surely 32bits |
878 // however 64bit side stores 64 bits which seems wrong | |
0 | 879 assert(ProfileInterpreter, "must be profiling interpreter"); |
880 Address data(mdp_in, constant); | |
304 | 881 movptr(data, value); |
0 | 882 } |
883 | |
884 | |
885 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
886 int constant, | |
887 bool decrement) { | |
888 // Counter address | |
889 Address data(mdp_in, constant); | |
890 | |
891 increment_mdp_data_at(data, decrement); | |
892 } | |
893 | |
894 | |
895 void InterpreterMacroAssembler::increment_mdp_data_at(Address data, | |
896 bool decrement) { | |
897 | |
898 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
899 assert(ProfileInterpreter, "must be profiling interpreter"); | |
900 | |
304 | 901 // %%% 64bit treats this as 64 bit which seems unlikely |
0 | 902 if (decrement) { |
903 // Decrement the register. Set condition codes. | |
904 addl(data, -DataLayout::counter_increment); | |
905 // If the decrement causes the counter to overflow, stay negative | |
906 Label L; | |
907 jcc(Assembler::negative, L); | |
908 addl(data, DataLayout::counter_increment); | |
909 bind(L); | |
910 } else { | |
911 assert(DataLayout::counter_increment == 1, | |
912 "flow-free idiom only works with 1"); | |
913 // Increment the register. Set carry flag. | |
914 addl(data, DataLayout::counter_increment); | |
915 // If the increment causes the counter to overflow, pull back by 1. | |
916 sbbl(data, 0); | |
917 } | |
918 } | |
919 | |
920 | |
921 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
922 Register reg, | |
923 int constant, | |
924 bool decrement) { | |
925 Address data(mdp_in, reg, Address::times_1, constant); | |
926 | |
927 increment_mdp_data_at(data, decrement); | |
928 } | |
929 | |
930 | |
931 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, int flag_byte_constant) { | |
932 assert(ProfileInterpreter, "must be profiling interpreter"); | |
933 int header_offset = in_bytes(DataLayout::header_offset()); | |
934 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant); | |
935 // Set the flag | |
936 orl(Address(mdp_in, header_offset), header_bits); | |
937 } | |
938 | |
939 | |
940 | |
941 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in, | |
942 int offset, | |
943 Register value, | |
944 Register test_value_out, | |
945 Label& not_equal_continue) { | |
946 assert(ProfileInterpreter, "must be profiling interpreter"); | |
947 if (test_value_out == noreg) { | |
304 | 948 cmpptr(value, Address(mdp_in, offset)); |
0 | 949 } else { |
950 // Put the test value into a register, so caller can use it: | |
304 | 951 movptr(test_value_out, Address(mdp_in, offset)); |
952 cmpptr(test_value_out, value); | |
0 | 953 } |
954 jcc(Assembler::notEqual, not_equal_continue); | |
955 } | |
956 | |
957 | |
958 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp) { | |
959 assert(ProfileInterpreter, "must be profiling interpreter"); | |
960 Address disp_address(mdp_in, offset_of_disp); | |
304 | 961 addptr(mdp_in,disp_address); |
962 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 963 } |
964 | |
965 | |
966 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp) { | |
967 assert(ProfileInterpreter, "must be profiling interpreter"); | |
968 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp); | |
304 | 969 addptr(mdp_in, disp_address); |
970 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 971 } |
972 | |
973 | |
974 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) { | |
975 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 976 addptr(mdp_in, constant); |
977 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 978 } |
979 | |
980 | |
981 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) { | |
982 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 983 push(return_bci); // save/restore across call_VM |
0 | 984 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); |
304 | 985 pop(return_bci); |
0 | 986 } |
987 | |
988 | |
989 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) { | |
990 if (ProfileInterpreter) { | |
991 Label profile_continue; | |
992 | |
993 // If no method data exists, go to profile_continue. | |
994 // Otherwise, assign to mdp | |
995 test_method_data_pointer(mdp, profile_continue); | |
996 | |
997 // We are taking a branch. Increment the taken count. | |
998 // We inline increment_mdp_data_at to return bumped_count in a register | |
999 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset())); | |
1000 Address data(mdp, in_bytes(JumpData::taken_offset())); | |
304 | 1001 |
1002 // %%% 64bit treats these cells as 64 bit but they seem to be 32 bit | |
0 | 1003 movl(bumped_count,data); |
1004 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
1005 addl(bumped_count, DataLayout::counter_increment); | |
1006 sbbl(bumped_count, 0); | |
1007 movl(data,bumped_count); // Store back out | |
1008 | |
1009 // The method data pointer needs to be updated to reflect the new target. | |
1010 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset())); | |
1011 bind (profile_continue); | |
1012 } | |
1013 } | |
1014 | |
1015 | |
1016 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) { | |
1017 if (ProfileInterpreter) { | |
1018 Label profile_continue; | |
1019 | |
1020 // If no method data exists, go to profile_continue. | |
1021 test_method_data_pointer(mdp, profile_continue); | |
1022 | |
1023 // We are taking a branch. Increment the not taken count. | |
1024 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset())); | |
1025 | |
1026 // The method data pointer needs to be updated to correspond to the next bytecode | |
1027 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size())); | |
1028 bind (profile_continue); | |
1029 } | |
1030 } | |
1031 | |
1032 | |
1033 void InterpreterMacroAssembler::profile_call(Register mdp) { | |
1034 if (ProfileInterpreter) { | |
1035 Label profile_continue; | |
1036 | |
1037 // If no method data exists, go to profile_continue. | |
1038 test_method_data_pointer(mdp, profile_continue); | |
1039 | |
1040 // We are making a call. Increment the count. | |
1041 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1042 | |
1043 // The method data pointer needs to be updated to reflect the new target. | |
1044 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size())); | |
1045 bind (profile_continue); | |
1046 } | |
1047 } | |
1048 | |
1049 | |
1050 void InterpreterMacroAssembler::profile_final_call(Register mdp) { | |
1051 if (ProfileInterpreter) { | |
1052 Label profile_continue; | |
1053 | |
1054 // If no method data exists, go to profile_continue. | |
1055 test_method_data_pointer(mdp, profile_continue); | |
1056 | |
1057 // We are making a call. Increment the count. | |
1058 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1059 | |
1060 // The method data pointer needs to be updated to reflect the new target. | |
1061 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size())); | |
1062 bind (profile_continue); | |
1063 } | |
1064 } | |
1065 | |
1066 | |
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1067 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, Register mdp, |
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1068 Register reg2, |
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1069 bool receiver_can_be_null) { |
0 | 1070 if (ProfileInterpreter) { |
1071 Label profile_continue; | |
1072 | |
1073 // If no method data exists, go to profile_continue. | |
1074 test_method_data_pointer(mdp, profile_continue); | |
1075 | |
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1076 Label skip_receiver_profile; |
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1077 if (receiver_can_be_null) { |
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1078 Label not_null; |
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1079 testptr(receiver, receiver); |
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1080 jccb(Assembler::notZero, not_null); |
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1081 // We are making a call. Increment the count for null receiver. |
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1082 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1083 jmp(skip_receiver_profile); |
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1084 bind(not_null); |
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1085 } |
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1086 |
0 | 1087 // Record the receiver type. |
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1088 record_klass_in_profile(receiver, mdp, reg2, true); |
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1089 bind(skip_receiver_profile); |
0 | 1090 |
1091 // The method data pointer needs to be updated to reflect the new target. | |
1092 update_mdp_by_constant(mdp, | |
1093 in_bytes(VirtualCallData:: | |
1094 virtual_call_data_size())); | |
1095 bind(profile_continue); | |
1096 } | |
1097 } | |
1098 | |
1099 | |
1100 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
1101 Register receiver, Register mdp, | |
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1102 Register reg2, int start_row, |
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1103 Label& done, bool is_virtual_call) { |
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1104 if (TypeProfileWidth == 0) { |
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1105 if (is_virtual_call) { |
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1106 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1107 } |
967
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1108 return; |
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1109 } |
967
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1110 |
0 | 1111 int last_row = VirtualCallData::row_limit() - 1; |
1112 assert(start_row <= last_row, "must be work left to do"); | |
1113 // Test this row for both the receiver and for null. | |
1114 // Take any of three different outcomes: | |
1115 // 1. found receiver => increment count and goto done | |
1116 // 2. found null => keep looking for case 1, maybe allocate this cell | |
1117 // 3. found something else => keep looking for cases 1 and 2 | |
1118 // Case 3 is handled by a recursive call. | |
1119 for (int row = start_row; row <= last_row; row++) { | |
1120 Label next_test; | |
1121 bool test_for_null_also = (row == start_row); | |
1122 | |
1123 // See if the receiver is receiver[n]. | |
1124 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
1125 test_mdp_data_at(mdp, recvr_offset, receiver, | |
1126 (test_for_null_also ? reg2 : noreg), | |
1127 next_test); | |
1128 // (Reg2 now contains the receiver from the CallData.) | |
1129 | |
1130 // The receiver is receiver[n]. Increment count[n]. | |
1131 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
1132 increment_mdp_data_at(mdp, count_offset); | |
1133 jmp(done); | |
1134 bind(next_test); | |
1135 | |
1136 if (row == start_row) { | |
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1137 Label found_null; |
0 | 1138 // Failed the equality check on receiver[n]... Test for null. |
304 | 1139 testptr(reg2, reg2); |
0 | 1140 if (start_row == last_row) { |
1141 // The only thing left to do is handle the null case. | |
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1142 if (is_virtual_call) { |
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1143 jccb(Assembler::zero, found_null); |
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1144 // Receiver did not match any saved receiver and there is no empty row for it. |
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1145 // Increment total counter to indicate polymorphic case. |
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1146 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1147 jmp(done); |
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1148 bind(found_null); |
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1149 } else { |
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1150 jcc(Assembler::notZero, done); |
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1151 } |
0 | 1152 break; |
1153 } | |
1154 // Since null is rare, make it be the branch-taken case. | |
1155 jcc(Assembler::zero, found_null); | |
1156 | |
1157 // Put all the "Case 3" tests here. | |
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1158 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done, is_virtual_call); |
0 | 1159 |
1160 // Found a null. Keep searching for a matching receiver, | |
1161 // but remember that this is an empty (unused) slot. | |
1162 bind(found_null); | |
1163 } | |
1164 } | |
1165 | |
1166 // In the fall-through case, we found no matching receiver, but we | |
1167 // observed the receiver[start_row] is NULL. | |
1168 | |
1169 // Fill in the receiver field and increment the count. | |
1170 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
1171 set_mdp_data_at(mdp, recvr_offset, receiver); | |
1172 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
304 | 1173 movptr(reg2, (int32_t)DataLayout::counter_increment); |
0 | 1174 set_mdp_data_at(mdp, count_offset, reg2); |
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1175 if (start_row > 0) { |
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1176 jmp(done); |
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1177 } |
0 | 1178 } |
1179 | |
1180 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
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1181 Register mdp, Register reg2, |
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1182 bool is_virtual_call) { |
0 | 1183 assert(ProfileInterpreter, "must be profiling"); |
1184 Label done; | |
1185 | |
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1186 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done, is_virtual_call); |
0 | 1187 |
1188 bind (done); | |
1189 } | |
1190 | |
1191 void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) { | |
1192 if (ProfileInterpreter) { | |
1193 Label profile_continue; | |
1194 uint row; | |
1195 | |
1196 // If no method data exists, go to profile_continue. | |
1197 test_method_data_pointer(mdp, profile_continue); | |
1198 | |
1199 // Update the total ret count. | |
1200 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1201 | |
1202 for (row = 0; row < RetData::row_limit(); row++) { | |
1203 Label next_test; | |
1204 | |
1205 // See if return_bci is equal to bci[n]: | |
1206 test_mdp_data_at(mdp, in_bytes(RetData::bci_offset(row)), return_bci, | |
1207 noreg, next_test); | |
1208 | |
1209 // return_bci is equal to bci[n]. Increment the count. | |
1210 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row))); | |
1211 | |
1212 // The method data pointer needs to be updated to reflect the new target. | |
1213 update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row))); | |
1214 jmp(profile_continue); | |
1215 bind(next_test); | |
1216 } | |
1217 | |
1218 update_mdp_for_ret(return_bci); | |
1219 | |
1220 bind (profile_continue); | |
1221 } | |
1222 } | |
1223 | |
1224 | |
1225 void InterpreterMacroAssembler::profile_null_seen(Register mdp) { | |
1226 if (ProfileInterpreter) { | |
1227 Label profile_continue; | |
1228 | |
1229 // If no method data exists, go to profile_continue. | |
1230 test_method_data_pointer(mdp, profile_continue); | |
1231 | |
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1232 set_mdp_flag_at(mdp, BitData::null_seen_byte_constant()); |
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1233 |
0 | 1234 // The method data pointer needs to be updated. |
1235 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1236 if (TypeProfileCasts) { | |
1237 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1238 } | |
1239 update_mdp_by_constant(mdp, mdp_delta); | |
1240 | |
1241 bind (profile_continue); | |
1242 } | |
1243 } | |
1244 | |
1245 | |
1246 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) { | |
1247 if (ProfileInterpreter && TypeProfileCasts) { | |
1248 Label profile_continue; | |
1249 | |
1250 // If no method data exists, go to profile_continue. | |
1251 test_method_data_pointer(mdp, profile_continue); | |
1252 | |
1253 int count_offset = in_bytes(CounterData::count_offset()); | |
1254 // Back up the address, since we have already bumped the mdp. | |
1255 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
1256 | |
1257 // *Decrement* the counter. We expect to see zero or small negatives. | |
1258 increment_mdp_data_at(mdp, count_offset, true); | |
1259 | |
1260 bind (profile_continue); | |
1261 } | |
1262 } | |
1263 | |
1264 | |
1265 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) | |
1266 { | |
1267 if (ProfileInterpreter) { | |
1268 Label profile_continue; | |
1269 | |
1270 // If no method data exists, go to profile_continue. | |
1271 test_method_data_pointer(mdp, profile_continue); | |
1272 | |
1273 // The method data pointer needs to be updated. | |
1274 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1275 if (TypeProfileCasts) { | |
1276 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1277 | |
1278 // Record the object type. | |
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1279 record_klass_in_profile(klass, mdp, reg2, false); |
0 | 1280 assert(reg2 == rdi, "we know how to fix this blown reg"); |
1281 restore_locals(); // Restore EDI | |
1282 } | |
1283 update_mdp_by_constant(mdp, mdp_delta); | |
1284 | |
1285 bind(profile_continue); | |
1286 } | |
1287 } | |
1288 | |
1289 | |
1290 void InterpreterMacroAssembler::profile_switch_default(Register mdp) { | |
1291 if (ProfileInterpreter) { | |
1292 Label profile_continue; | |
1293 | |
1294 // If no method data exists, go to profile_continue. | |
1295 test_method_data_pointer(mdp, profile_continue); | |
1296 | |
1297 // Update the default case count | |
1298 increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset())); | |
1299 | |
1300 // The method data pointer needs to be updated. | |
1301 update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset())); | |
1302 | |
1303 bind (profile_continue); | |
1304 } | |
1305 } | |
1306 | |
1307 | |
1308 void InterpreterMacroAssembler::profile_switch_case(Register index, Register mdp, Register reg2) { | |
1309 if (ProfileInterpreter) { | |
1310 Label profile_continue; | |
1311 | |
1312 // If no method data exists, go to profile_continue. | |
1313 test_method_data_pointer(mdp, profile_continue); | |
1314 | |
1315 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes() | |
304 | 1316 movptr(reg2, (int32_t)in_bytes(MultiBranchData::per_case_size())); |
1317 // index is positive and so should have correct value if this code were | |
1318 // used on 64bits | |
1319 imulptr(index, reg2); | |
1320 addptr(index, in_bytes(MultiBranchData::case_array_offset())); | |
0 | 1321 |
1322 // Update the case count | |
1323 increment_mdp_data_at(mdp, index, in_bytes(MultiBranchData::relative_count_offset())); | |
1324 | |
1325 // The method data pointer needs to be updated. | |
1326 update_mdp_by_offset(mdp, index, in_bytes(MultiBranchData::relative_displacement_offset())); | |
1327 | |
1328 bind (profile_continue); | |
1329 } | |
1330 } | |
1331 | |
1332 #endif // !CC_INTERP | |
1333 | |
1334 | |
1335 | |
1336 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { | |
1337 if (state == atos) MacroAssembler::verify_oop(reg); | |
1338 } | |
1339 | |
1340 | |
1341 #ifndef CC_INTERP | |
1342 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
1343 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth); | |
1344 } | |
1345 | |
1346 #endif /* CC_INTERP */ | |
1347 | |
1348 | |
1349 void InterpreterMacroAssembler::notify_method_entry() { | |
1350 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
1351 // track stack depth. If it is possible to enter interp_only_mode we add | |
1352 // the code to check if the event should be sent. | |
1353 if (JvmtiExport::can_post_interpreter_events()) { | |
1354 Label L; | |
1355 get_thread(rcx); | |
1356 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
1357 testl(rcx,rcx); | |
1358 jcc(Assembler::zero, L); | |
1359 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry)); | |
1360 bind(L); | |
1361 } | |
1362 | |
1363 { | |
1364 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
1365 get_thread(rcx); | |
1366 get_method(rbx); | |
1367 call_VM_leaf( | |
1368 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), rcx, rbx); | |
1369 } | |
610
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1370 |
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1371 // RedefineClasses() tracing support for obsolete method entry |
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1372 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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1373 get_thread(rcx); |
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1374 get_method(rbx); |
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1375 call_VM_leaf( |
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1376 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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1377 rcx, rbx); |
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1378 } |
0 | 1379 } |
1380 | |
1381 | |
1382 void InterpreterMacroAssembler::notify_method_exit( | |
1383 TosState state, NotifyMethodExitMode mode) { | |
1384 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
1385 // track stack depth. If it is possible to enter interp_only_mode we add | |
1386 // the code to check if the event should be sent. | |
1387 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
1388 Label L; | |
1389 // Note: frame::interpreter_frame_result has a dependency on how the | |
1390 // method result is saved across the call to post_method_exit. If this | |
1391 // is changed then the interpreter_frame_result implementation will | |
1392 // need to be updated too. | |
1393 | |
1394 // For c++ interpreter the result is always stored at a known location in the frame | |
1395 // template interpreter will leave it on the top of the stack. | |
1396 NOT_CC_INTERP(push(state);) | |
1397 get_thread(rcx); | |
1398 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
1399 testl(rcx,rcx); | |
1400 jcc(Assembler::zero, L); | |
1401 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
1402 bind(L); | |
1403 NOT_CC_INTERP(pop(state);) | |
1404 } | |
1405 | |
1406 { | |
1407 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
304 | 1408 NOT_CC_INTERP(push(state)); |
0 | 1409 get_thread(rbx); |
1410 get_method(rcx); | |
1411 call_VM_leaf( | |
1412 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
1413 rbx, rcx); | |
304 | 1414 NOT_CC_INTERP(pop(state)); |
0 | 1415 } |
1416 } | |
1783 | 1417 |
1418 // Jump if ((*counter_addr += increment) & mask) satisfies the condition. | |
1419 void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr, | |
1420 int increment, int mask, | |
1421 Register scratch, bool preloaded, | |
1422 Condition cond, Label* where) { | |
1423 if (!preloaded) { | |
1424 movl(scratch, counter_addr); | |
1425 } | |
1426 incrementl(scratch, increment); | |
1427 movl(counter_addr, scratch); | |
1428 andl(scratch, mask); | |
1429 jcc(cond, *where); | |
1430 } |