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annotate src/cpu/x86/vm/interp_masm_x86_32.cpp @ 3719:5140bf905747
Removed mx/env from revision control.
author | Doug Simon <doug.simon@oracle.com> |
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date | Fri, 16 Dec 2011 13:37:14 +0100 |
parents | 2e038ad0c1d0 |
children | 341a57af9b0a |
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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 | |
710 | 386 void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() { |
0 | 387 // set sender sp |
304 | 388 lea(rsi, Address(rsp, wordSize)); |
0 | 389 // record last_sp |
304 | 390 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), rsi); |
710 | 391 } |
392 | |
393 | |
394 // Jump to from_interpreted entry of a call unless single stepping is possible | |
395 // in this thread in which case we must call the i2i entry | |
396 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) { | |
397 prepare_to_jump_from_interpreted(); | |
0 | 398 |
399 if (JvmtiExport::can_post_interpreter_events()) { | |
400 Label run_compiled_code; | |
401 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
402 // compiled code in threads for which the event is enabled. Check here for | |
403 // interp_only_mode if these events CAN be enabled. | |
404 get_thread(temp); | |
405 // interp_only is an int, on little endian it is sufficient to test the byte only | |
406 // Is a cmpl faster (ce | |
407 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0); | |
408 jcc(Assembler::zero, run_compiled_code); | |
409 jmp(Address(method, methodOopDesc::interpreter_entry_offset())); | |
410 bind(run_compiled_code); | |
411 } | |
412 | |
413 jmp(Address(method, methodOopDesc::from_interpreted_offset())); | |
414 | |
415 } | |
416 | |
417 | |
418 // The following two routines provide a hook so that an implementation | |
419 // can schedule the dispatch in two parts. Intel does not do this. | |
420 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) { | |
421 // Nothing Intel-specific to be done here. | |
422 } | |
423 | |
424 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) { | |
425 dispatch_next(state, step); | |
426 } | |
427 | |
428 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table, | |
429 bool verifyoop) { | |
430 verify_FPU(1, state); | |
431 if (VerifyActivationFrameSize) { | |
432 Label L; | |
304 | 433 mov(rcx, rbp); |
434 subptr(rcx, rsp); | |
0 | 435 int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize; |
304 | 436 cmpptr(rcx, min_frame_size); |
0 | 437 jcc(Assembler::greaterEqual, L); |
438 stop("broken stack frame"); | |
439 bind(L); | |
440 } | |
441 if (verifyoop) verify_oop(rax, state); | |
304 | 442 Address index(noreg, rbx, Address::times_ptr); |
0 | 443 ExternalAddress tbl((address)table); |
444 ArrayAddress dispatch(tbl, index); | |
445 jump(dispatch); | |
446 } | |
447 | |
448 | |
449 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
450 dispatch_base(state, Interpreter::dispatch_table(state)); | |
451 } | |
452 | |
453 | |
454 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) { | |
455 dispatch_base(state, Interpreter::normal_table(state)); | |
456 } | |
457 | |
458 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) { | |
459 dispatch_base(state, Interpreter::normal_table(state), false); | |
460 } | |
461 | |
462 | |
463 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) { | |
464 // load next bytecode (load before advancing rsi to prevent AGI) | |
465 load_unsigned_byte(rbx, Address(rsi, step)); | |
466 // advance rsi | |
467 increment(rsi, step); | |
468 dispatch_base(state, Interpreter::dispatch_table(state)); | |
469 } | |
470 | |
471 | |
472 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
473 // load current bytecode | |
474 load_unsigned_byte(rbx, Address(rsi, 0)); | |
475 dispatch_base(state, table); | |
476 } | |
477 | |
478 // remove activation | |
479 // | |
480 // Unlock the receiver if this is a synchronized method. | |
481 // Unlock any Java monitors from syncronized blocks. | |
482 // Remove the activation from the stack. | |
483 // | |
484 // If there are locked Java monitors | |
485 // If throw_monitor_exception | |
486 // throws IllegalMonitorStateException | |
487 // Else if install_monitor_exception | |
488 // installs IllegalMonitorStateException | |
489 // Else | |
490 // no error processing | |
491 void InterpreterMacroAssembler::remove_activation(TosState state, Register ret_addr, | |
492 bool throw_monitor_exception, | |
493 bool install_monitor_exception, | |
494 bool notify_jvmdi) { | |
495 // Note: Registers rax, rdx and FPU ST(0) may be in use for the result | |
496 // check if synchronized method | |
497 Label unlocked, unlock, no_unlock; | |
498 | |
499 get_thread(rcx); | |
500 const Address do_not_unlock_if_synchronized(rcx, | |
501 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
502 | |
503 movbool(rbx, do_not_unlock_if_synchronized); | |
304 | 504 mov(rdi,rbx); |
0 | 505 movbool(do_not_unlock_if_synchronized, false); // reset the flag |
506 | |
304 | 507 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); // get method access flags |
0 | 508 movl(rcx, Address(rbx, methodOopDesc::access_flags_offset())); |
509 | |
510 testl(rcx, JVM_ACC_SYNCHRONIZED); | |
511 jcc(Assembler::zero, unlocked); | |
512 | |
513 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
514 // is set. | |
304 | 515 mov(rcx,rdi); |
0 | 516 testbool(rcx); |
517 jcc(Assembler::notZero, no_unlock); | |
518 | |
519 // unlock monitor | |
520 push(state); // save result | |
521 | |
522 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
523 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
524 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
304 | 525 lea (rdx, monitor); // address of first monitor |
0 | 526 |
304 | 527 movptr (rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
528 testptr(rax, rax); | |
529 jcc (Assembler::notZero, unlock); | |
0 | 530 |
531 pop(state); | |
532 if (throw_monitor_exception) { | |
533 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
534 | |
535 // Entry already unlocked, need to throw exception | |
536 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
537 should_not_reach_here(); | |
538 } else { | |
539 // Monitor already unlocked during a stack unroll. | |
540 // If requested, install an illegal_monitor_state_exception. | |
541 // Continue with stack unrolling. | |
542 if (install_monitor_exception) { | |
543 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
544 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
545 } | |
546 jmp(unlocked); | |
547 } | |
548 | |
549 bind(unlock); | |
550 unlock_object(rdx); | |
551 pop(state); | |
552 | |
553 // Check that for block-structured locking (i.e., that all locked objects has been unlocked) | |
554 bind(unlocked); | |
555 | |
556 // rax, rdx: Might contain return value | |
557 | |
558 // Check that all monitors are unlocked | |
559 { | |
560 Label loop, exception, entry, restart; | |
561 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
562 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
563 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
564 | |
565 bind(restart); | |
304 | 566 movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
567 lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
0 | 568 jmp(entry); |
569 | |
570 // Entry already locked, need to throw exception | |
571 bind(exception); | |
572 | |
573 if (throw_monitor_exception) { | |
574 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
575 | |
576 // Throw exception | |
577 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
578 should_not_reach_here(); | |
579 } else { | |
580 // Stack unrolling. Unlock object and install illegal_monitor_exception | |
581 // Unlock does not block, so don't have to worry about the frame | |
582 | |
583 push(state); | |
304 | 584 mov(rdx, rcx); |
0 | 585 unlock_object(rdx); |
586 pop(state); | |
587 | |
588 if (install_monitor_exception) { | |
589 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
590 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
591 } | |
592 | |
593 jmp(restart); | |
594 } | |
595 | |
596 bind(loop); | |
304 | 597 cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
0 | 598 jcc(Assembler::notEqual, exception); |
599 | |
304 | 600 addptr(rcx, entry_size); // otherwise advance to next entry |
0 | 601 bind(entry); |
304 | 602 cmpptr(rcx, rbx); // check if bottom reached |
0 | 603 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
604 } | |
605 | |
606 bind(no_unlock); | |
607 | |
608 // jvmti support | |
609 if (notify_jvmdi) { | |
610 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA | |
611 } else { | |
612 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA | |
613 } | |
614 | |
615 // remove activation | |
304 | 616 movptr(rbx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 617 leave(); // remove frame anchor |
304 | 618 pop(ret_addr); // get return address |
619 mov(rsp, rbx); // set sp to sender sp | |
0 | 620 if (UseSSE) { |
621 // float and double are returned in xmm register in SSE-mode | |
622 if (state == ftos && UseSSE >= 1) { | |
304 | 623 subptr(rsp, wordSize); |
0 | 624 fstp_s(Address(rsp, 0)); |
625 movflt(xmm0, Address(rsp, 0)); | |
304 | 626 addptr(rsp, wordSize); |
0 | 627 } else if (state == dtos && UseSSE >= 2) { |
304 | 628 subptr(rsp, 2*wordSize); |
0 | 629 fstp_d(Address(rsp, 0)); |
630 movdbl(xmm0, Address(rsp, 0)); | |
304 | 631 addptr(rsp, 2*wordSize); |
0 | 632 } |
633 } | |
634 } | |
635 | |
636 #endif /* !CC_INTERP */ | |
637 | |
638 | |
639 // Lock object | |
640 // | |
641 // Argument: rdx : Points to BasicObjectLock to be used for locking. Must | |
642 // be initialized with object to lock | |
643 void InterpreterMacroAssembler::lock_object(Register lock_reg) { | |
644 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
645 | |
646 if (UseHeavyMonitors) { | |
647 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
648 } else { | |
649 | |
650 Label done; | |
651 | |
652 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
653 const Register obj_reg = rcx; // Will contain the oop | |
654 | |
655 const int obj_offset = BasicObjectLock::obj_offset_in_bytes(); | |
656 const int lock_offset = BasicObjectLock::lock_offset_in_bytes (); | |
657 const int mark_offset = lock_offset + BasicLock::displaced_header_offset_in_bytes(); | |
658 | |
659 Label slow_case; | |
660 | |
661 // Load object pointer into obj_reg %rcx | |
304 | 662 movptr(obj_reg, Address(lock_reg, obj_offset)); |
0 | 663 |
664 if (UseBiasedLocking) { | |
665 // Note: we use noreg for the temporary register since it's hard | |
666 // to come up with a free register on all incoming code paths | |
667 biased_locking_enter(lock_reg, obj_reg, swap_reg, noreg, false, done, &slow_case); | |
668 } | |
669 | |
670 // Load immediate 1 into swap_reg %rax, | |
304 | 671 movptr(swap_reg, (int32_t)1); |
0 | 672 |
673 // Load (object->mark() | 1) into swap_reg %rax, | |
304 | 674 orptr(swap_reg, Address(obj_reg, 0)); |
0 | 675 |
676 // Save (object->mark() | 1) into BasicLock's displaced header | |
304 | 677 movptr(Address(lock_reg, mark_offset), swap_reg); |
0 | 678 |
679 assert(lock_offset == 0, "displached header must be first word in BasicObjectLock"); | |
680 if (os::is_MP()) { | |
681 lock(); | |
682 } | |
304 | 683 cmpxchgptr(lock_reg, Address(obj_reg, 0)); |
0 | 684 if (PrintBiasedLockingStatistics) { |
685 cond_inc32(Assembler::zero, | |
686 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
687 } | |
688 jcc(Assembler::zero, done); | |
689 | |
690 // Test if the oopMark is an obvious stack pointer, i.e., | |
691 // 1) (mark & 3) == 0, and | |
692 // 2) rsp <= mark < mark + os::pagesize() | |
693 // | |
694 // These 3 tests can be done by evaluating the following | |
695 // expression: ((mark - rsp) & (3 - os::vm_page_size())), | |
696 // assuming both stack pointer and pagesize have their | |
697 // least significant 2 bits clear. | |
698 // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg | |
304 | 699 subptr(swap_reg, rsp); |
700 andptr(swap_reg, 3 - os::vm_page_size()); | |
0 | 701 |
702 // Save the test result, for recursive case, the result is zero | |
304 | 703 movptr(Address(lock_reg, mark_offset), swap_reg); |
0 | 704 |
705 if (PrintBiasedLockingStatistics) { | |
706 cond_inc32(Assembler::zero, | |
707 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
708 } | |
709 jcc(Assembler::zero, done); | |
710 | |
711 bind(slow_case); | |
712 | |
713 // Call the runtime routine for slow case | |
714 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
715 | |
716 bind(done); | |
717 } | |
718 } | |
719 | |
720 | |
721 // Unlocks an object. Used in monitorexit bytecode and remove_activation. | |
722 // | |
723 // Argument: rdx : Points to BasicObjectLock structure for lock | |
724 // Throw an IllegalMonitorException if object is not locked by current thread | |
725 // | |
726 // Uses: rax, rbx, rcx, rdx | |
727 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
728 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
729 | |
730 if (UseHeavyMonitors) { | |
731 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); | |
732 } else { | |
733 Label done; | |
734 | |
735 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
736 const Register header_reg = rbx; // Will contain the old oopMark | |
737 const Register obj_reg = rcx; // Will contain the oop | |
738 | |
739 save_bcp(); // Save in case of exception | |
740 | |
741 // Convert from BasicObjectLock structure to object and BasicLock structure | |
742 // Store the BasicLock address into %rax, | |
304 | 743 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes())); |
0 | 744 |
745 // Load oop into obj_reg(%rcx) | |
304 | 746 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ())); |
0 | 747 |
748 // Free entry | |
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749 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD); |
0 | 750 |
751 if (UseBiasedLocking) { | |
752 biased_locking_exit(obj_reg, header_reg, done); | |
753 } | |
754 | |
755 // Load the old header from BasicLock structure | |
304 | 756 movptr(header_reg, Address(swap_reg, BasicLock::displaced_header_offset_in_bytes())); |
0 | 757 |
758 // Test for recursion | |
304 | 759 testptr(header_reg, header_reg); |
0 | 760 |
761 // zero for recursive case | |
762 jcc(Assembler::zero, done); | |
763 | |
764 // Atomic swap back the old header | |
765 if (os::is_MP()) lock(); | |
304 | 766 cmpxchgptr(header_reg, Address(obj_reg, 0)); |
0 | 767 |
768 // zero for recursive case | |
769 jcc(Assembler::zero, done); | |
770 | |
771 // Call the runtime routine for slow case. | |
304 | 772 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), obj_reg); // restore obj |
0 | 773 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); |
774 | |
775 bind(done); | |
776 | |
777 restore_bcp(); | |
778 } | |
779 } | |
780 | |
781 | |
782 #ifndef CC_INTERP | |
783 | |
784 // Test ImethodDataPtr. If it is null, continue at the specified label | |
785 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) { | |
786 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 787 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize)); |
788 testptr(mdp, mdp); | |
0 | 789 jcc(Assembler::zero, zero_continue); |
790 } | |
791 | |
792 | |
793 // Set the method data pointer for the current bcp. | |
794 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
795 assert(ProfileInterpreter, "must be profiling interpreter"); | |
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796 Label set_mdp; |
304 | 797 push(rax); |
798 push(rbx); | |
0 | 799 |
800 get_method(rbx); | |
801 // Test MDO to avoid the call if it is NULL. | |
304 | 802 movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
803 testptr(rax, rax); | |
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804 jcc(Assembler::zero, set_mdp); |
0 | 805 // rbx,: method |
806 // rsi: bcp | |
807 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, rsi); | |
808 // rax,: mdi | |
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809 // mdo is guaranteed to be non-zero here, we checked for it before the call. |
304 | 810 movptr(rbx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
811 addptr(rbx, in_bytes(methodDataOopDesc::data_offset())); | |
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812 addptr(rax, rbx); |
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813 bind(set_mdp); |
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814 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); |
304 | 815 pop(rbx); |
816 pop(rax); | |
0 | 817 } |
818 | |
819 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
820 assert(ProfileInterpreter, "must be profiling interpreter"); | |
821 #ifdef ASSERT | |
822 Label verify_continue; | |
304 | 823 push(rax); |
824 push(rbx); | |
825 push(rcx); | |
826 push(rdx); | |
0 | 827 test_method_data_pointer(rcx, verify_continue); // If mdp is zero, continue |
828 get_method(rbx); | |
829 | |
830 // If the mdp is valid, it will point to a DataLayout header which is | |
831 // consistent with the bcp. The converse is highly probable also. | |
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832 load_unsigned_short(rdx, Address(rcx, in_bytes(DataLayout::bci_offset()))); |
304 | 833 addptr(rdx, Address(rbx, methodOopDesc::const_offset())); |
834 lea(rdx, Address(rdx, constMethodOopDesc::codes_offset())); | |
835 cmpptr(rdx, rsi); | |
0 | 836 jcc(Assembler::equal, verify_continue); |
837 // rbx,: method | |
838 // rsi: bcp | |
839 // rcx: mdp | |
840 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), rbx, rsi, rcx); | |
841 bind(verify_continue); | |
304 | 842 pop(rdx); |
843 pop(rcx); | |
844 pop(rbx); | |
845 pop(rax); | |
0 | 846 #endif // ASSERT |
847 } | |
848 | |
849 | |
850 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, int constant, Register value) { | |
304 | 851 // %%% this seems to be used to store counter data which is surely 32bits |
852 // however 64bit side stores 64 bits which seems wrong | |
0 | 853 assert(ProfileInterpreter, "must be profiling interpreter"); |
854 Address data(mdp_in, constant); | |
304 | 855 movptr(data, value); |
0 | 856 } |
857 | |
858 | |
859 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
860 int constant, | |
861 bool decrement) { | |
862 // Counter address | |
863 Address data(mdp_in, constant); | |
864 | |
865 increment_mdp_data_at(data, decrement); | |
866 } | |
867 | |
868 | |
869 void InterpreterMacroAssembler::increment_mdp_data_at(Address data, | |
870 bool decrement) { | |
871 | |
872 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
873 assert(ProfileInterpreter, "must be profiling interpreter"); | |
874 | |
304 | 875 // %%% 64bit treats this as 64 bit which seems unlikely |
0 | 876 if (decrement) { |
877 // Decrement the register. Set condition codes. | |
878 addl(data, -DataLayout::counter_increment); | |
879 // If the decrement causes the counter to overflow, stay negative | |
880 Label L; | |
881 jcc(Assembler::negative, L); | |
882 addl(data, DataLayout::counter_increment); | |
883 bind(L); | |
884 } else { | |
885 assert(DataLayout::counter_increment == 1, | |
886 "flow-free idiom only works with 1"); | |
887 // Increment the register. Set carry flag. | |
888 addl(data, DataLayout::counter_increment); | |
889 // If the increment causes the counter to overflow, pull back by 1. | |
890 sbbl(data, 0); | |
891 } | |
892 } | |
893 | |
894 | |
895 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
896 Register reg, | |
897 int constant, | |
898 bool decrement) { | |
899 Address data(mdp_in, reg, Address::times_1, constant); | |
900 | |
901 increment_mdp_data_at(data, decrement); | |
902 } | |
903 | |
904 | |
905 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, int flag_byte_constant) { | |
906 assert(ProfileInterpreter, "must be profiling interpreter"); | |
907 int header_offset = in_bytes(DataLayout::header_offset()); | |
908 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant); | |
909 // Set the flag | |
910 orl(Address(mdp_in, header_offset), header_bits); | |
911 } | |
912 | |
913 | |
914 | |
915 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in, | |
916 int offset, | |
917 Register value, | |
918 Register test_value_out, | |
919 Label& not_equal_continue) { | |
920 assert(ProfileInterpreter, "must be profiling interpreter"); | |
921 if (test_value_out == noreg) { | |
304 | 922 cmpptr(value, Address(mdp_in, offset)); |
0 | 923 } else { |
924 // Put the test value into a register, so caller can use it: | |
304 | 925 movptr(test_value_out, Address(mdp_in, offset)); |
926 cmpptr(test_value_out, value); | |
0 | 927 } |
928 jcc(Assembler::notEqual, not_equal_continue); | |
929 } | |
930 | |
931 | |
932 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp) { | |
933 assert(ProfileInterpreter, "must be profiling interpreter"); | |
934 Address disp_address(mdp_in, offset_of_disp); | |
304 | 935 addptr(mdp_in,disp_address); |
936 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 937 } |
938 | |
939 | |
940 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp) { | |
941 assert(ProfileInterpreter, "must be profiling interpreter"); | |
942 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp); | |
304 | 943 addptr(mdp_in, disp_address); |
944 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 945 } |
946 | |
947 | |
948 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) { | |
949 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 950 addptr(mdp_in, constant); |
951 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 952 } |
953 | |
954 | |
955 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) { | |
956 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 957 push(return_bci); // save/restore across call_VM |
0 | 958 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); |
304 | 959 pop(return_bci); |
0 | 960 } |
961 | |
962 | |
963 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) { | |
964 if (ProfileInterpreter) { | |
965 Label profile_continue; | |
966 | |
967 // If no method data exists, go to profile_continue. | |
968 // Otherwise, assign to mdp | |
969 test_method_data_pointer(mdp, profile_continue); | |
970 | |
971 // We are taking a branch. Increment the taken count. | |
972 // We inline increment_mdp_data_at to return bumped_count in a register | |
973 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset())); | |
974 Address data(mdp, in_bytes(JumpData::taken_offset())); | |
304 | 975 |
976 // %%% 64bit treats these cells as 64 bit but they seem to be 32 bit | |
0 | 977 movl(bumped_count,data); |
978 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
979 addl(bumped_count, DataLayout::counter_increment); | |
980 sbbl(bumped_count, 0); | |
981 movl(data,bumped_count); // Store back out | |
982 | |
983 // The method data pointer needs to be updated to reflect the new target. | |
984 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset())); | |
985 bind (profile_continue); | |
986 } | |
987 } | |
988 | |
989 | |
990 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) { | |
991 if (ProfileInterpreter) { | |
992 Label profile_continue; | |
993 | |
994 // If no method data exists, go to profile_continue. | |
995 test_method_data_pointer(mdp, profile_continue); | |
996 | |
997 // We are taking a branch. Increment the not taken count. | |
998 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset())); | |
999 | |
1000 // The method data pointer needs to be updated to correspond to the next bytecode | |
1001 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size())); | |
1002 bind (profile_continue); | |
1003 } | |
1004 } | |
1005 | |
1006 | |
1007 void InterpreterMacroAssembler::profile_call(Register mdp) { | |
1008 if (ProfileInterpreter) { | |
1009 Label profile_continue; | |
1010 | |
1011 // If no method data exists, go to profile_continue. | |
1012 test_method_data_pointer(mdp, profile_continue); | |
1013 | |
1014 // We are making a call. Increment the count. | |
1015 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1016 | |
1017 // The method data pointer needs to be updated to reflect the new target. | |
1018 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size())); | |
1019 bind (profile_continue); | |
1020 } | |
1021 } | |
1022 | |
1023 | |
1024 void InterpreterMacroAssembler::profile_final_call(Register mdp) { | |
1025 if (ProfileInterpreter) { | |
1026 Label profile_continue; | |
1027 | |
1028 // If no method data exists, go to profile_continue. | |
1029 test_method_data_pointer(mdp, profile_continue); | |
1030 | |
1031 // We are making a call. Increment the count. | |
1032 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1033 | |
1034 // The method data pointer needs to be updated to reflect the new target. | |
1035 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size())); | |
1036 bind (profile_continue); | |
1037 } | |
1038 } | |
1039 | |
1040 | |
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1041 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, Register mdp, |
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1042 Register reg2, |
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1043 bool receiver_can_be_null) { |
0 | 1044 if (ProfileInterpreter) { |
1045 Label profile_continue; | |
1046 | |
1047 // If no method data exists, go to profile_continue. | |
1048 test_method_data_pointer(mdp, profile_continue); | |
1049 | |
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1050 Label skip_receiver_profile; |
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1051 if (receiver_can_be_null) { |
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1052 Label not_null; |
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1053 testptr(receiver, receiver); |
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1054 jccb(Assembler::notZero, not_null); |
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1055 // We are making a call. Increment the count for null receiver. |
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1056 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1057 jmp(skip_receiver_profile); |
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1058 bind(not_null); |
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1059 } |
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1060 |
0 | 1061 // Record the receiver type. |
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1062 record_klass_in_profile(receiver, mdp, reg2, true); |
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1063 bind(skip_receiver_profile); |
0 | 1064 |
1065 // The method data pointer needs to be updated to reflect the new target. | |
1066 update_mdp_by_constant(mdp, | |
1067 in_bytes(VirtualCallData:: | |
1068 virtual_call_data_size())); | |
1069 bind(profile_continue); | |
1070 } | |
1071 } | |
1072 | |
1073 | |
1074 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
1075 Register receiver, Register mdp, | |
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1076 Register reg2, int start_row, |
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1077 Label& done, bool is_virtual_call) { |
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1078 if (TypeProfileWidth == 0) { |
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1079 if (is_virtual_call) { |
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1080 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1081 } |
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1082 return; |
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1083 } |
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1084 |
0 | 1085 int last_row = VirtualCallData::row_limit() - 1; |
1086 assert(start_row <= last_row, "must be work left to do"); | |
1087 // Test this row for both the receiver and for null. | |
1088 // Take any of three different outcomes: | |
1089 // 1. found receiver => increment count and goto done | |
1090 // 2. found null => keep looking for case 1, maybe allocate this cell | |
1091 // 3. found something else => keep looking for cases 1 and 2 | |
1092 // Case 3 is handled by a recursive call. | |
1093 for (int row = start_row; row <= last_row; row++) { | |
1094 Label next_test; | |
1095 bool test_for_null_also = (row == start_row); | |
1096 | |
1097 // See if the receiver is receiver[n]. | |
1098 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
1099 test_mdp_data_at(mdp, recvr_offset, receiver, | |
1100 (test_for_null_also ? reg2 : noreg), | |
1101 next_test); | |
1102 // (Reg2 now contains the receiver from the CallData.) | |
1103 | |
1104 // The receiver is receiver[n]. Increment count[n]. | |
1105 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
1106 increment_mdp_data_at(mdp, count_offset); | |
1107 jmp(done); | |
1108 bind(next_test); | |
1109 | |
1110 if (row == start_row) { | |
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1111 Label found_null; |
0 | 1112 // Failed the equality check on receiver[n]... Test for null. |
304 | 1113 testptr(reg2, reg2); |
0 | 1114 if (start_row == last_row) { |
1115 // The only thing left to do is handle the null case. | |
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1116 if (is_virtual_call) { |
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1117 jccb(Assembler::zero, found_null); |
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1118 // Receiver did not match any saved receiver and there is no empty row for it. |
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1119 // Increment total counter to indicate polymorphic case. |
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1120 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1121 jmp(done); |
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1122 bind(found_null); |
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1123 } else { |
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1124 jcc(Assembler::notZero, done); |
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1125 } |
0 | 1126 break; |
1127 } | |
1128 // Since null is rare, make it be the branch-taken case. | |
1129 jcc(Assembler::zero, found_null); | |
1130 | |
1131 // Put all the "Case 3" tests here. | |
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1132 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done, is_virtual_call); |
0 | 1133 |
1134 // Found a null. Keep searching for a matching receiver, | |
1135 // but remember that this is an empty (unused) slot. | |
1136 bind(found_null); | |
1137 } | |
1138 } | |
1139 | |
1140 // In the fall-through case, we found no matching receiver, but we | |
1141 // observed the receiver[start_row] is NULL. | |
1142 | |
1143 // Fill in the receiver field and increment the count. | |
1144 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
1145 set_mdp_data_at(mdp, recvr_offset, receiver); | |
1146 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
304 | 1147 movptr(reg2, (int32_t)DataLayout::counter_increment); |
0 | 1148 set_mdp_data_at(mdp, count_offset, reg2); |
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1149 if (start_row > 0) { |
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1150 jmp(done); |
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1151 } |
0 | 1152 } |
1153 | |
1154 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
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1155 Register mdp, Register reg2, |
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1156 bool is_virtual_call) { |
0 | 1157 assert(ProfileInterpreter, "must be profiling"); |
1158 Label done; | |
1159 | |
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1160 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done, is_virtual_call); |
0 | 1161 |
1162 bind (done); | |
1163 } | |
1164 | |
1165 void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) { | |
1166 if (ProfileInterpreter) { | |
1167 Label profile_continue; | |
1168 uint row; | |
1169 | |
1170 // If no method data exists, go to profile_continue. | |
1171 test_method_data_pointer(mdp, profile_continue); | |
1172 | |
1173 // Update the total ret count. | |
1174 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1175 | |
1176 for (row = 0; row < RetData::row_limit(); row++) { | |
1177 Label next_test; | |
1178 | |
1179 // See if return_bci is equal to bci[n]: | |
1180 test_mdp_data_at(mdp, in_bytes(RetData::bci_offset(row)), return_bci, | |
1181 noreg, next_test); | |
1182 | |
1183 // return_bci is equal to bci[n]. Increment the count. | |
1184 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row))); | |
1185 | |
1186 // The method data pointer needs to be updated to reflect the new target. | |
1187 update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row))); | |
1188 jmp(profile_continue); | |
1189 bind(next_test); | |
1190 } | |
1191 | |
1192 update_mdp_for_ret(return_bci); | |
1193 | |
1194 bind (profile_continue); | |
1195 } | |
1196 } | |
1197 | |
1198 | |
1199 void InterpreterMacroAssembler::profile_null_seen(Register mdp) { | |
1200 if (ProfileInterpreter) { | |
1201 Label profile_continue; | |
1202 | |
1203 // If no method data exists, go to profile_continue. | |
1204 test_method_data_pointer(mdp, profile_continue); | |
1205 | |
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1206 set_mdp_flag_at(mdp, BitData::null_seen_byte_constant()); |
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1207 |
0 | 1208 // The method data pointer needs to be updated. |
1209 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1210 if (TypeProfileCasts) { | |
1211 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1212 } | |
1213 update_mdp_by_constant(mdp, mdp_delta); | |
1214 | |
1215 bind (profile_continue); | |
1216 } | |
1217 } | |
1218 | |
1219 | |
1220 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) { | |
1221 if (ProfileInterpreter && TypeProfileCasts) { | |
1222 Label profile_continue; | |
1223 | |
1224 // If no method data exists, go to profile_continue. | |
1225 test_method_data_pointer(mdp, profile_continue); | |
1226 | |
1227 int count_offset = in_bytes(CounterData::count_offset()); | |
1228 // Back up the address, since we have already bumped the mdp. | |
1229 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
1230 | |
1231 // *Decrement* the counter. We expect to see zero or small negatives. | |
1232 increment_mdp_data_at(mdp, count_offset, true); | |
1233 | |
1234 bind (profile_continue); | |
1235 } | |
1236 } | |
1237 | |
1238 | |
1239 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) | |
1240 { | |
1241 if (ProfileInterpreter) { | |
1242 Label profile_continue; | |
1243 | |
1244 // If no method data exists, go to profile_continue. | |
1245 test_method_data_pointer(mdp, profile_continue); | |
1246 | |
1247 // The method data pointer needs to be updated. | |
1248 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1249 if (TypeProfileCasts) { | |
1250 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1251 | |
1252 // Record the object type. | |
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1253 record_klass_in_profile(klass, mdp, reg2, false); |
0 | 1254 assert(reg2 == rdi, "we know how to fix this blown reg"); |
1255 restore_locals(); // Restore EDI | |
1256 } | |
1257 update_mdp_by_constant(mdp, mdp_delta); | |
1258 | |
1259 bind(profile_continue); | |
1260 } | |
1261 } | |
1262 | |
1263 | |
1264 void InterpreterMacroAssembler::profile_switch_default(Register mdp) { | |
1265 if (ProfileInterpreter) { | |
1266 Label profile_continue; | |
1267 | |
1268 // If no method data exists, go to profile_continue. | |
1269 test_method_data_pointer(mdp, profile_continue); | |
1270 | |
1271 // Update the default case count | |
1272 increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset())); | |
1273 | |
1274 // The method data pointer needs to be updated. | |
1275 update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset())); | |
1276 | |
1277 bind (profile_continue); | |
1278 } | |
1279 } | |
1280 | |
1281 | |
1282 void InterpreterMacroAssembler::profile_switch_case(Register index, Register mdp, Register reg2) { | |
1283 if (ProfileInterpreter) { | |
1284 Label profile_continue; | |
1285 | |
1286 // If no method data exists, go to profile_continue. | |
1287 test_method_data_pointer(mdp, profile_continue); | |
1288 | |
1289 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes() | |
304 | 1290 movptr(reg2, (int32_t)in_bytes(MultiBranchData::per_case_size())); |
1291 // index is positive and so should have correct value if this code were | |
1292 // used on 64bits | |
1293 imulptr(index, reg2); | |
1294 addptr(index, in_bytes(MultiBranchData::case_array_offset())); | |
0 | 1295 |
1296 // Update the case count | |
1297 increment_mdp_data_at(mdp, index, in_bytes(MultiBranchData::relative_count_offset())); | |
1298 | |
1299 // The method data pointer needs to be updated. | |
1300 update_mdp_by_offset(mdp, index, in_bytes(MultiBranchData::relative_displacement_offset())); | |
1301 | |
1302 bind (profile_continue); | |
1303 } | |
1304 } | |
1305 | |
1306 #endif // !CC_INTERP | |
1307 | |
1308 | |
1309 | |
1310 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { | |
1311 if (state == atos) MacroAssembler::verify_oop(reg); | |
1312 } | |
1313 | |
1314 | |
1315 #ifndef CC_INTERP | |
1316 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
1317 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth); | |
1318 } | |
1319 | |
1320 #endif /* CC_INTERP */ | |
1321 | |
1322 | |
1323 void InterpreterMacroAssembler::notify_method_entry() { | |
1324 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
1325 // track stack depth. If it is possible to enter interp_only_mode we add | |
1326 // the code to check if the event should be sent. | |
1327 if (JvmtiExport::can_post_interpreter_events()) { | |
1328 Label L; | |
1329 get_thread(rcx); | |
1330 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
1331 testl(rcx,rcx); | |
1332 jcc(Assembler::zero, L); | |
1333 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry)); | |
1334 bind(L); | |
1335 } | |
1336 | |
1337 { | |
1338 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
1339 get_thread(rcx); | |
1340 get_method(rbx); | |
1341 call_VM_leaf( | |
1342 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), rcx, rbx); | |
1343 } | |
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1345 // RedefineClasses() tracing support for obsolete method entry |
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1346 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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1347 get_thread(rcx); |
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1348 get_method(rbx); |
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1349 call_VM_leaf( |
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1350 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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1351 rcx, rbx); |
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1352 } |
0 | 1353 } |
1354 | |
1355 | |
1356 void InterpreterMacroAssembler::notify_method_exit( | |
1357 TosState state, NotifyMethodExitMode mode) { | |
1358 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
1359 // track stack depth. If it is possible to enter interp_only_mode we add | |
1360 // the code to check if the event should be sent. | |
1361 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
1362 Label L; | |
1363 // Note: frame::interpreter_frame_result has a dependency on how the | |
1364 // method result is saved across the call to post_method_exit. If this | |
1365 // is changed then the interpreter_frame_result implementation will | |
1366 // need to be updated too. | |
1367 | |
1368 // For c++ interpreter the result is always stored at a known location in the frame | |
1369 // template interpreter will leave it on the top of the stack. | |
1370 NOT_CC_INTERP(push(state);) | |
1371 get_thread(rcx); | |
1372 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
1373 testl(rcx,rcx); | |
1374 jcc(Assembler::zero, L); | |
1375 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
1376 bind(L); | |
1377 NOT_CC_INTERP(pop(state);) | |
1378 } | |
1379 | |
1380 { | |
1381 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
304 | 1382 NOT_CC_INTERP(push(state)); |
0 | 1383 get_thread(rbx); |
1384 get_method(rcx); | |
1385 call_VM_leaf( | |
1386 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
1387 rbx, rcx); | |
304 | 1388 NOT_CC_INTERP(pop(state)); |
0 | 1389 } |
1390 } | |
1783 | 1391 |
1392 // Jump if ((*counter_addr += increment) & mask) satisfies the condition. | |
1393 void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr, | |
1394 int increment, int mask, | |
1395 Register scratch, bool preloaded, | |
1396 Condition cond, Label* where) { | |
1397 if (!preloaded) { | |
1398 movl(scratch, counter_addr); | |
1399 } | |
1400 incrementl(scratch, increment); | |
1401 movl(counter_addr, scratch); | |
1402 andl(scratch, mask); | |
1403 jcc(cond, *where); | |
1404 } |