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annotate src/cpu/x86/vm/interp_masm_x86_32.cpp @ 4656:c1160de36474
Merge.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Mon, 20 Feb 2012 18:01:22 +0100 |
parents | f08d439fab8c |
children | 1d7922586cf6 |
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 | |
3960 | 48 #ifdef TARGET_OS_FAMILY_bsd |
49 # include "thread_bsd.inline.hpp" | |
50 #endif | |
0 | 51 |
52 | |
53 // Implementation of InterpreterMacroAssembler | |
54 #ifdef CC_INTERP | |
55 void InterpreterMacroAssembler::get_method(Register reg) { | |
304 | 56 movptr(reg, Address(rbp, -(sizeof(BytecodeInterpreter) + 2 * wordSize))); |
57 movptr(reg, Address(reg, byte_offset_of(BytecodeInterpreter, _method))); | |
0 | 58 } |
59 #endif // CC_INTERP | |
60 | |
61 | |
62 #ifndef CC_INTERP | |
63 void InterpreterMacroAssembler::call_VM_leaf_base( | |
64 address entry_point, | |
65 int number_of_arguments | |
66 ) { | |
67 // interpreter specific | |
68 // | |
69 // Note: No need to save/restore bcp & locals (rsi & rdi) pointer | |
70 // since these are callee saved registers and no blocking/ | |
71 // GC can happen in leaf calls. | |
72 // Further Note: DO NOT save/restore bcp/locals. If a caller has | |
73 // already saved them so that it can use rsi/rdi as temporaries | |
74 // then a save/restore here will DESTROY the copy the caller | |
75 // saved! There used to be a save_bcp() that only happened in | |
76 // the ASSERT path (no restore_bcp). Which caused bizarre failures | |
77 // when jvm built with ASSERTs. | |
78 #ifdef ASSERT | |
79 { Label L; | |
304 | 80 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 81 jcc(Assembler::equal, L); |
82 stop("InterpreterMacroAssembler::call_VM_leaf_base: last_sp != NULL"); | |
83 bind(L); | |
84 } | |
85 #endif | |
86 // super call | |
87 MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments); | |
88 // interpreter specific | |
89 | |
90 // Used to ASSERT that rsi/rdi were equal to frame's bcp/locals | |
91 // but since they may not have been saved (and we don't want to | |
92 // save them here (see note above) the assert is invalid. | |
93 } | |
94 | |
95 | |
96 void InterpreterMacroAssembler::call_VM_base( | |
97 Register oop_result, | |
98 Register java_thread, | |
99 Register last_java_sp, | |
100 address entry_point, | |
101 int number_of_arguments, | |
102 bool check_exceptions | |
103 ) { | |
104 #ifdef ASSERT | |
105 { Label L; | |
304 | 106 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 107 jcc(Assembler::equal, L); |
108 stop("InterpreterMacroAssembler::call_VM_base: last_sp != NULL"); | |
109 bind(L); | |
110 } | |
111 #endif /* ASSERT */ | |
112 // interpreter specific | |
113 // | |
114 // Note: Could avoid restoring locals ptr (callee saved) - however doesn't | |
115 // really make a difference for these runtime calls, since they are | |
116 // slow anyway. Btw., bcp must be saved/restored since it may change | |
117 // due to GC. | |
118 assert(java_thread == noreg , "not expecting a precomputed java thread"); | |
119 save_bcp(); | |
120 // super call | |
121 MacroAssembler::call_VM_base(oop_result, java_thread, last_java_sp, entry_point, number_of_arguments, check_exceptions); | |
122 // interpreter specific | |
123 restore_bcp(); | |
124 restore_locals(); | |
125 } | |
126 | |
127 | |
128 void InterpreterMacroAssembler::check_and_handle_popframe(Register java_thread) { | |
129 if (JvmtiExport::can_pop_frame()) { | |
130 Label L; | |
131 // Initiate popframe handling only if it is not already being processed. If the flag | |
132 // has the popframe_processing bit set, it means that this code is called *during* popframe | |
133 // handling - we don't want to reenter. | |
134 Register pop_cond = java_thread; // Not clear if any other register is available... | |
135 movl(pop_cond, Address(java_thread, JavaThread::popframe_condition_offset())); | |
136 testl(pop_cond, JavaThread::popframe_pending_bit); | |
137 jcc(Assembler::zero, L); | |
138 testl(pop_cond, JavaThread::popframe_processing_bit); | |
139 jcc(Assembler::notZero, L); | |
140 // Call Interpreter::remove_activation_preserving_args_entry() to get the | |
141 // address of the same-named entrypoint in the generated interpreter code. | |
142 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry)); | |
143 jmp(rax); | |
144 bind(L); | |
145 get_thread(java_thread); | |
146 } | |
147 } | |
148 | |
149 | |
150 void InterpreterMacroAssembler::load_earlyret_value(TosState state) { | |
151 get_thread(rcx); | |
152 movl(rcx, Address(rcx, JavaThread::jvmti_thread_state_offset())); | |
153 const Address tos_addr (rcx, JvmtiThreadState::earlyret_tos_offset()); | |
154 const Address oop_addr (rcx, JvmtiThreadState::earlyret_oop_offset()); | |
155 const Address val_addr (rcx, JvmtiThreadState::earlyret_value_offset()); | |
156 const Address val_addr1(rcx, JvmtiThreadState::earlyret_value_offset() | |
157 + in_ByteSize(wordSize)); | |
158 switch (state) { | |
304 | 159 case atos: movptr(rax, oop_addr); |
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160 movptr(oop_addr, NULL_WORD); |
0 | 161 verify_oop(rax, state); break; |
304 | 162 case ltos: |
163 movl(rdx, val_addr1); // fall through | |
0 | 164 case btos: // fall through |
165 case ctos: // fall through | |
166 case stos: // fall through | |
167 case itos: movl(rax, val_addr); break; | |
168 case ftos: fld_s(val_addr); break; | |
169 case dtos: fld_d(val_addr); break; | |
170 case vtos: /* nothing to do */ break; | |
171 default : ShouldNotReachHere(); | |
172 } | |
173 // Clean up tos value in the thread object | |
304 | 174 movl(tos_addr, (int32_t) ilgl); |
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175 movptr(val_addr, NULL_WORD); |
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176 NOT_LP64(movptr(val_addr1, NULL_WORD)); |
0 | 177 } |
178 | |
179 | |
180 void InterpreterMacroAssembler::check_and_handle_earlyret(Register java_thread) { | |
181 if (JvmtiExport::can_force_early_return()) { | |
182 Label L; | |
183 Register tmp = java_thread; | |
304 | 184 movptr(tmp, Address(tmp, JavaThread::jvmti_thread_state_offset())); |
185 testptr(tmp, tmp); | |
0 | 186 jcc(Assembler::zero, L); // if (thread->jvmti_thread_state() == NULL) exit; |
187 | |
188 // Initiate earlyret handling only if it is not already being processed. | |
189 // If the flag has the earlyret_processing bit set, it means that this code | |
190 // is called *during* earlyret handling - we don't want to reenter. | |
191 movl(tmp, Address(tmp, JvmtiThreadState::earlyret_state_offset())); | |
192 cmpl(tmp, JvmtiThreadState::earlyret_pending); | |
193 jcc(Assembler::notEqual, L); | |
194 | |
195 // Call Interpreter::remove_activation_early_entry() to get the address of the | |
196 // same-named entrypoint in the generated interpreter code. | |
197 get_thread(java_thread); | |
304 | 198 movptr(tmp, Address(java_thread, JavaThread::jvmti_thread_state_offset())); |
0 | 199 pushl(Address(tmp, JvmtiThreadState::earlyret_tos_offset())); |
200 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), 1); | |
201 jmp(rax); | |
202 bind(L); | |
203 get_thread(java_thread); | |
204 } | |
205 } | |
206 | |
207 | |
208 void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset) { | |
209 assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode"); | |
210 movl(reg, Address(rsi, bcp_offset)); | |
304 | 211 bswapl(reg); |
0 | 212 shrl(reg, 16); |
213 } | |
214 | |
215 | |
1565 | 216 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register reg, int bcp_offset, size_t index_size) { |
0 | 217 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); |
1565 | 218 if (index_size == sizeof(u2)) { |
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219 load_unsigned_short(reg, Address(rsi, bcp_offset)); |
1565 | 220 } else if (index_size == sizeof(u4)) { |
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221 assert(EnableInvokeDynamic, "giant index used only for JSR 292"); |
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222 movl(reg, Address(rsi, bcp_offset)); |
1108 | 223 // Check if the secondary index definition is still ~x, otherwise |
224 // we have to change the following assembler code to calculate the | |
225 // plain index. | |
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226 assert(constantPoolCacheOopDesc::decode_secondary_index(~123) == 123, "else change next line"); |
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227 notl(reg); // convert to plain index |
1565 | 228 } else if (index_size == sizeof(u1)) { |
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229 assert(EnableInvokeDynamic, "tiny index used only for JSR 292"); |
1565 | 230 load_unsigned_byte(reg, Address(rsi, bcp_offset)); |
231 } else { | |
232 ShouldNotReachHere(); | |
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233 } |
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234 } |
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235 |
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236 |
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237 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register index, |
1565 | 238 int bcp_offset, size_t index_size) { |
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239 assert_different_registers(cache, index); |
1565 | 240 get_cache_index_at_bcp(index, bcp_offset, index_size); |
304 | 241 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
0 | 242 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); |
304 | 243 shlptr(index, 2); // convert from field index to ConstantPoolCacheEntry index |
0 | 244 } |
245 | |
246 | |
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247 void InterpreterMacroAssembler::get_cache_and_index_and_bytecode_at_bcp(Register cache, |
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248 Register index, |
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249 Register bytecode, |
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250 int byte_no, |
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251 int bcp_offset, |
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252 size_t index_size) { |
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253 get_cache_and_index_at_bcp(cache, index, bcp_offset, index_size); |
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254 movptr(bytecode, Address(cache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::indices_offset())); |
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255 const int shift_count = (1 + byte_no) * BitsPerByte; |
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256 shrptr(bytecode, shift_count); |
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257 andptr(bytecode, 0xFF); |
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258 } |
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259 |
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260 |
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261 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp, |
1565 | 262 int bcp_offset, size_t index_size) { |
0 | 263 assert(cache != tmp, "must use different register"); |
1565 | 264 get_cache_index_at_bcp(tmp, bcp_offset, index_size); |
0 | 265 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); |
266 // convert from field index to ConstantPoolCacheEntry index | |
267 // and from word offset to byte offset | |
268 shll(tmp, 2 + LogBytesPerWord); | |
304 | 269 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
0 | 270 // skip past the header |
304 | 271 addptr(cache, in_bytes(constantPoolCacheOopDesc::base_offset())); |
272 addptr(cache, tmp); // construct pointer to cache entry | |
0 | 273 } |
274 | |
275 | |
276 // Generate a subtype check: branch to ok_is_subtype if sub_klass is | |
277 // a subtype of super_klass. EAX holds the super_klass. Blows ECX. | |
278 // Resets EDI to locals. Register sub_klass cannot be any of the above. | |
279 void InterpreterMacroAssembler::gen_subtype_check( Register Rsub_klass, Label &ok_is_subtype ) { | |
280 assert( Rsub_klass != rax, "rax, holds superklass" ); | |
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281 assert( Rsub_klass != rcx, "used as a temp" ); |
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282 assert( Rsub_klass != rdi, "used as a temp, restored from locals" ); |
0 | 283 |
284 // Profile the not-null value's klass. | |
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285 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi |
0 | 286 |
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287 // Do the check. |
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288 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx |
0 | 289 |
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290 // Profile the failure of the check. |
0 | 291 profile_typecheck_failed(rcx); // blows rcx |
292 } | |
293 | |
294 void InterpreterMacroAssembler::f2ieee() { | |
295 if (IEEEPrecision) { | |
296 fstp_s(Address(rsp, 0)); | |
297 fld_s(Address(rsp, 0)); | |
298 } | |
299 } | |
300 | |
301 | |
302 void InterpreterMacroAssembler::d2ieee() { | |
303 if (IEEEPrecision) { | |
304 fstp_d(Address(rsp, 0)); | |
305 fld_d(Address(rsp, 0)); | |
306 } | |
307 } | |
308 | |
309 // Java Expression Stack | |
310 | |
311 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
304 | 312 pop(r); |
0 | 313 } |
314 | |
315 void InterpreterMacroAssembler::pop_i(Register r) { | |
304 | 316 pop(r); |
0 | 317 } |
318 | |
319 void InterpreterMacroAssembler::pop_l(Register lo, Register hi) { | |
304 | 320 pop(lo); |
321 pop(hi); | |
0 | 322 } |
323 | |
324 void InterpreterMacroAssembler::pop_f() { | |
325 fld_s(Address(rsp, 0)); | |
304 | 326 addptr(rsp, 1 * wordSize); |
0 | 327 } |
328 | |
329 void InterpreterMacroAssembler::pop_d() { | |
330 fld_d(Address(rsp, 0)); | |
304 | 331 addptr(rsp, 2 * wordSize); |
0 | 332 } |
333 | |
334 | |
335 void InterpreterMacroAssembler::pop(TosState state) { | |
336 switch (state) { | |
337 case atos: pop_ptr(rax); break; | |
338 case btos: // fall through | |
339 case ctos: // fall through | |
340 case stos: // fall through | |
341 case itos: pop_i(rax); break; | |
342 case ltos: pop_l(rax, rdx); break; | |
343 case ftos: pop_f(); break; | |
344 case dtos: pop_d(); break; | |
345 case vtos: /* nothing to do */ break; | |
346 default : ShouldNotReachHere(); | |
347 } | |
348 verify_oop(rax, state); | |
349 } | |
350 | |
351 void InterpreterMacroAssembler::push_ptr(Register r) { | |
304 | 352 push(r); |
0 | 353 } |
354 | |
355 void InterpreterMacroAssembler::push_i(Register r) { | |
304 | 356 push(r); |
0 | 357 } |
358 | |
359 void InterpreterMacroAssembler::push_l(Register lo, Register hi) { | |
304 | 360 push(hi); |
361 push(lo); | |
0 | 362 } |
363 | |
364 void InterpreterMacroAssembler::push_f() { | |
365 // Do not schedule for no AGI! Never write beyond rsp! | |
304 | 366 subptr(rsp, 1 * wordSize); |
0 | 367 fstp_s(Address(rsp, 0)); |
368 } | |
369 | |
370 void InterpreterMacroAssembler::push_d(Register r) { | |
1506 | 371 // Do not schedule for no AGI! Never write beyond rsp! |
372 subptr(rsp, 2 * wordSize); | |
373 fstp_d(Address(rsp, 0)); | |
0 | 374 } |
375 | |
376 | |
377 void InterpreterMacroAssembler::push(TosState state) { | |
378 verify_oop(rax, state); | |
379 switch (state) { | |
380 case atos: push_ptr(rax); break; | |
381 case btos: // fall through | |
382 case ctos: // fall through | |
383 case stos: // fall through | |
384 case itos: push_i(rax); break; | |
385 case ltos: push_l(rax, rdx); break; | |
386 case ftos: push_f(); break; | |
387 case dtos: push_d(rax); break; | |
388 case vtos: /* nothing to do */ break; | |
389 default : ShouldNotReachHere(); | |
390 } | |
391 } | |
392 | |
393 | |
1506 | 394 // Helpers for swap and dup |
395 void InterpreterMacroAssembler::load_ptr(int n, Register val) { | |
304 | 396 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n))); |
0 | 397 } |
398 | |
1506 | 399 void InterpreterMacroAssembler::store_ptr(int n, Register val) { |
400 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val); | |
0 | 401 } |
402 | |
710 | 403 void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() { |
0 | 404 // set sender sp |
304 | 405 lea(rsi, Address(rsp, wordSize)); |
0 | 406 // record last_sp |
304 | 407 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), rsi); |
710 | 408 } |
409 | |
410 | |
411 // Jump to from_interpreted entry of a call unless single stepping is possible | |
412 // in this thread in which case we must call the i2i entry | |
413 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) { | |
414 prepare_to_jump_from_interpreted(); | |
0 | 415 |
416 if (JvmtiExport::can_post_interpreter_events()) { | |
417 Label run_compiled_code; | |
418 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
419 // compiled code in threads for which the event is enabled. Check here for | |
420 // interp_only_mode if these events CAN be enabled. | |
421 get_thread(temp); | |
422 // interp_only is an int, on little endian it is sufficient to test the byte only | |
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423 // Is a cmpl faster? |
0 | 424 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0); |
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425 jccb(Assembler::zero, run_compiled_code); |
0 | 426 jmp(Address(method, methodOopDesc::interpreter_entry_offset())); |
427 bind(run_compiled_code); | |
428 } | |
429 | |
430 jmp(Address(method, methodOopDesc::from_interpreted_offset())); | |
431 | |
432 } | |
433 | |
434 | |
435 // The following two routines provide a hook so that an implementation | |
436 // can schedule the dispatch in two parts. Intel does not do this. | |
437 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) { | |
438 // Nothing Intel-specific to be done here. | |
439 } | |
440 | |
441 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) { | |
442 dispatch_next(state, step); | |
443 } | |
444 | |
445 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table, | |
446 bool verifyoop) { | |
447 verify_FPU(1, state); | |
448 if (VerifyActivationFrameSize) { | |
449 Label L; | |
304 | 450 mov(rcx, rbp); |
451 subptr(rcx, rsp); | |
0 | 452 int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize; |
304 | 453 cmpptr(rcx, min_frame_size); |
0 | 454 jcc(Assembler::greaterEqual, L); |
455 stop("broken stack frame"); | |
456 bind(L); | |
457 } | |
458 if (verifyoop) verify_oop(rax, state); | |
304 | 459 Address index(noreg, rbx, Address::times_ptr); |
0 | 460 ExternalAddress tbl((address)table); |
461 ArrayAddress dispatch(tbl, index); | |
462 jump(dispatch); | |
463 } | |
464 | |
465 | |
466 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
467 dispatch_base(state, Interpreter::dispatch_table(state)); | |
468 } | |
469 | |
470 | |
471 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) { | |
472 dispatch_base(state, Interpreter::normal_table(state)); | |
473 } | |
474 | |
475 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) { | |
476 dispatch_base(state, Interpreter::normal_table(state), false); | |
477 } | |
478 | |
479 | |
480 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) { | |
481 // load next bytecode (load before advancing rsi to prevent AGI) | |
482 load_unsigned_byte(rbx, Address(rsi, step)); | |
483 // advance rsi | |
484 increment(rsi, step); | |
485 dispatch_base(state, Interpreter::dispatch_table(state)); | |
486 } | |
487 | |
488 | |
489 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
490 // load current bytecode | |
491 load_unsigned_byte(rbx, Address(rsi, 0)); | |
492 dispatch_base(state, table); | |
493 } | |
494 | |
495 // remove activation | |
496 // | |
497 // Unlock the receiver if this is a synchronized method. | |
498 // Unlock any Java monitors from syncronized blocks. | |
499 // Remove the activation from the stack. | |
500 // | |
501 // If there are locked Java monitors | |
502 // If throw_monitor_exception | |
503 // throws IllegalMonitorStateException | |
504 // Else if install_monitor_exception | |
505 // installs IllegalMonitorStateException | |
506 // Else | |
507 // no error processing | |
508 void InterpreterMacroAssembler::remove_activation(TosState state, Register ret_addr, | |
509 bool throw_monitor_exception, | |
510 bool install_monitor_exception, | |
511 bool notify_jvmdi) { | |
512 // Note: Registers rax, rdx and FPU ST(0) may be in use for the result | |
513 // check if synchronized method | |
514 Label unlocked, unlock, no_unlock; | |
515 | |
516 get_thread(rcx); | |
517 const Address do_not_unlock_if_synchronized(rcx, | |
518 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
519 | |
520 movbool(rbx, do_not_unlock_if_synchronized); | |
304 | 521 mov(rdi,rbx); |
0 | 522 movbool(do_not_unlock_if_synchronized, false); // reset the flag |
523 | |
304 | 524 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); // get method access flags |
0 | 525 movl(rcx, Address(rbx, methodOopDesc::access_flags_offset())); |
526 | |
527 testl(rcx, JVM_ACC_SYNCHRONIZED); | |
528 jcc(Assembler::zero, unlocked); | |
529 | |
530 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
531 // is set. | |
304 | 532 mov(rcx,rdi); |
0 | 533 testbool(rcx); |
534 jcc(Assembler::notZero, no_unlock); | |
535 | |
536 // unlock monitor | |
537 push(state); // save result | |
538 | |
539 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
540 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
541 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
304 | 542 lea (rdx, monitor); // address of first monitor |
0 | 543 |
304 | 544 movptr (rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
545 testptr(rax, rax); | |
546 jcc (Assembler::notZero, unlock); | |
0 | 547 |
548 pop(state); | |
549 if (throw_monitor_exception) { | |
550 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
551 | |
552 // Entry already unlocked, need to throw exception | |
553 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
554 should_not_reach_here(); | |
555 } else { | |
556 // Monitor already unlocked during a stack unroll. | |
557 // If requested, install an illegal_monitor_state_exception. | |
558 // Continue with stack unrolling. | |
559 if (install_monitor_exception) { | |
560 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
561 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
562 } | |
563 jmp(unlocked); | |
564 } | |
565 | |
566 bind(unlock); | |
567 unlock_object(rdx); | |
568 pop(state); | |
569 | |
570 // Check that for block-structured locking (i.e., that all locked objects has been unlocked) | |
571 bind(unlocked); | |
572 | |
573 // rax, rdx: Might contain return value | |
574 | |
575 // Check that all monitors are unlocked | |
576 { | |
577 Label loop, exception, entry, restart; | |
578 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
579 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
580 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
581 | |
582 bind(restart); | |
304 | 583 movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
584 lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
0 | 585 jmp(entry); |
586 | |
587 // Entry already locked, need to throw exception | |
588 bind(exception); | |
589 | |
590 if (throw_monitor_exception) { | |
591 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
592 | |
593 // Throw exception | |
594 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
595 should_not_reach_here(); | |
596 } else { | |
597 // Stack unrolling. Unlock object and install illegal_monitor_exception | |
598 // Unlock does not block, so don't have to worry about the frame | |
599 | |
600 push(state); | |
304 | 601 mov(rdx, rcx); |
0 | 602 unlock_object(rdx); |
603 pop(state); | |
604 | |
605 if (install_monitor_exception) { | |
606 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
607 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
608 } | |
609 | |
610 jmp(restart); | |
611 } | |
612 | |
613 bind(loop); | |
304 | 614 cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
0 | 615 jcc(Assembler::notEqual, exception); |
616 | |
304 | 617 addptr(rcx, entry_size); // otherwise advance to next entry |
0 | 618 bind(entry); |
304 | 619 cmpptr(rcx, rbx); // check if bottom reached |
0 | 620 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
621 } | |
622 | |
623 bind(no_unlock); | |
624 | |
625 // jvmti support | |
626 if (notify_jvmdi) { | |
627 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA | |
628 } else { | |
629 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA | |
630 } | |
631 | |
632 // remove activation | |
304 | 633 movptr(rbx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 634 leave(); // remove frame anchor |
304 | 635 pop(ret_addr); // get return address |
636 mov(rsp, rbx); // set sp to sender sp | |
0 | 637 if (UseSSE) { |
638 // float and double are returned in xmm register in SSE-mode | |
639 if (state == ftos && UseSSE >= 1) { | |
304 | 640 subptr(rsp, wordSize); |
0 | 641 fstp_s(Address(rsp, 0)); |
642 movflt(xmm0, Address(rsp, 0)); | |
304 | 643 addptr(rsp, wordSize); |
0 | 644 } else if (state == dtos && UseSSE >= 2) { |
304 | 645 subptr(rsp, 2*wordSize); |
0 | 646 fstp_d(Address(rsp, 0)); |
647 movdbl(xmm0, Address(rsp, 0)); | |
304 | 648 addptr(rsp, 2*wordSize); |
0 | 649 } |
650 } | |
651 } | |
652 | |
653 #endif /* !CC_INTERP */ | |
654 | |
655 | |
656 // Lock object | |
657 // | |
658 // Argument: rdx : Points to BasicObjectLock to be used for locking. Must | |
659 // be initialized with object to lock | |
660 void InterpreterMacroAssembler::lock_object(Register lock_reg) { | |
661 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
662 | |
663 if (UseHeavyMonitors) { | |
664 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
665 } else { | |
666 | |
667 Label done; | |
668 | |
669 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
670 const Register obj_reg = rcx; // Will contain the oop | |
671 | |
672 const int obj_offset = BasicObjectLock::obj_offset_in_bytes(); | |
673 const int lock_offset = BasicObjectLock::lock_offset_in_bytes (); | |
674 const int mark_offset = lock_offset + BasicLock::displaced_header_offset_in_bytes(); | |
675 | |
676 Label slow_case; | |
677 | |
678 // Load object pointer into obj_reg %rcx | |
304 | 679 movptr(obj_reg, Address(lock_reg, obj_offset)); |
0 | 680 |
681 if (UseBiasedLocking) { | |
682 // Note: we use noreg for the temporary register since it's hard | |
683 // to come up with a free register on all incoming code paths | |
684 biased_locking_enter(lock_reg, obj_reg, swap_reg, noreg, false, done, &slow_case); | |
685 } | |
686 | |
687 // Load immediate 1 into swap_reg %rax, | |
304 | 688 movptr(swap_reg, (int32_t)1); |
0 | 689 |
690 // Load (object->mark() | 1) into swap_reg %rax, | |
304 | 691 orptr(swap_reg, Address(obj_reg, 0)); |
0 | 692 |
693 // Save (object->mark() | 1) into BasicLock's displaced header | |
304 | 694 movptr(Address(lock_reg, mark_offset), swap_reg); |
0 | 695 |
696 assert(lock_offset == 0, "displached header must be first word in BasicObjectLock"); | |
697 if (os::is_MP()) { | |
698 lock(); | |
699 } | |
304 | 700 cmpxchgptr(lock_reg, Address(obj_reg, 0)); |
0 | 701 if (PrintBiasedLockingStatistics) { |
702 cond_inc32(Assembler::zero, | |
703 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
704 } | |
705 jcc(Assembler::zero, done); | |
706 | |
707 // Test if the oopMark is an obvious stack pointer, i.e., | |
708 // 1) (mark & 3) == 0, and | |
709 // 2) rsp <= mark < mark + os::pagesize() | |
710 // | |
711 // These 3 tests can be done by evaluating the following | |
712 // expression: ((mark - rsp) & (3 - os::vm_page_size())), | |
713 // assuming both stack pointer and pagesize have their | |
714 // least significant 2 bits clear. | |
715 // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg | |
304 | 716 subptr(swap_reg, rsp); |
717 andptr(swap_reg, 3 - os::vm_page_size()); | |
0 | 718 |
719 // Save the test result, for recursive case, the result is zero | |
304 | 720 movptr(Address(lock_reg, mark_offset), swap_reg); |
0 | 721 |
722 if (PrintBiasedLockingStatistics) { | |
723 cond_inc32(Assembler::zero, | |
724 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
725 } | |
726 jcc(Assembler::zero, done); | |
727 | |
728 bind(slow_case); | |
729 | |
730 // Call the runtime routine for slow case | |
731 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
732 | |
733 bind(done); | |
734 } | |
735 } | |
736 | |
737 | |
738 // Unlocks an object. Used in monitorexit bytecode and remove_activation. | |
739 // | |
740 // Argument: rdx : Points to BasicObjectLock structure for lock | |
741 // Throw an IllegalMonitorException if object is not locked by current thread | |
742 // | |
743 // Uses: rax, rbx, rcx, rdx | |
744 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
745 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
746 | |
747 if (UseHeavyMonitors) { | |
748 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); | |
749 } else { | |
750 Label done; | |
751 | |
752 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
753 const Register header_reg = rbx; // Will contain the old oopMark | |
754 const Register obj_reg = rcx; // Will contain the oop | |
755 | |
756 save_bcp(); // Save in case of exception | |
757 | |
758 // Convert from BasicObjectLock structure to object and BasicLock structure | |
759 // Store the BasicLock address into %rax, | |
304 | 760 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes())); |
0 | 761 |
762 // Load oop into obj_reg(%rcx) | |
304 | 763 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ())); |
0 | 764 |
765 // Free entry | |
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766 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD); |
0 | 767 |
768 if (UseBiasedLocking) { | |
769 biased_locking_exit(obj_reg, header_reg, done); | |
770 } | |
771 | |
772 // Load the old header from BasicLock structure | |
304 | 773 movptr(header_reg, Address(swap_reg, BasicLock::displaced_header_offset_in_bytes())); |
0 | 774 |
775 // Test for recursion | |
304 | 776 testptr(header_reg, header_reg); |
0 | 777 |
778 // zero for recursive case | |
779 jcc(Assembler::zero, done); | |
780 | |
781 // Atomic swap back the old header | |
782 if (os::is_MP()) lock(); | |
304 | 783 cmpxchgptr(header_reg, Address(obj_reg, 0)); |
0 | 784 |
785 // zero for recursive case | |
786 jcc(Assembler::zero, done); | |
787 | |
788 // Call the runtime routine for slow case. | |
304 | 789 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), obj_reg); // restore obj |
0 | 790 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); |
791 | |
792 bind(done); | |
793 | |
794 restore_bcp(); | |
795 } | |
796 } | |
797 | |
798 | |
799 #ifndef CC_INTERP | |
800 | |
801 // Test ImethodDataPtr. If it is null, continue at the specified label | |
802 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) { | |
803 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 804 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize)); |
805 testptr(mdp, mdp); | |
0 | 806 jcc(Assembler::zero, zero_continue); |
807 } | |
808 | |
809 | |
810 // Set the method data pointer for the current bcp. | |
811 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
812 assert(ProfileInterpreter, "must be profiling interpreter"); | |
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813 Label set_mdp; |
304 | 814 push(rax); |
815 push(rbx); | |
0 | 816 |
817 get_method(rbx); | |
818 // Test MDO to avoid the call if it is NULL. | |
304 | 819 movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
820 testptr(rax, rax); | |
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821 jcc(Assembler::zero, set_mdp); |
0 | 822 // rbx,: method |
823 // rsi: bcp | |
824 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, rsi); | |
825 // rax,: mdi | |
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826 // mdo is guaranteed to be non-zero here, we checked for it before the call. |
304 | 827 movptr(rbx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
828 addptr(rbx, in_bytes(methodDataOopDesc::data_offset())); | |
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829 addptr(rax, rbx); |
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830 bind(set_mdp); |
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831 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); |
304 | 832 pop(rbx); |
833 pop(rax); | |
0 | 834 } |
835 | |
836 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
837 assert(ProfileInterpreter, "must be profiling interpreter"); | |
838 #ifdef ASSERT | |
839 Label verify_continue; | |
304 | 840 push(rax); |
841 push(rbx); | |
842 push(rcx); | |
843 push(rdx); | |
0 | 844 test_method_data_pointer(rcx, verify_continue); // If mdp is zero, continue |
845 get_method(rbx); | |
846 | |
847 // If the mdp is valid, it will point to a DataLayout header which is | |
848 // consistent with the bcp. The converse is highly probable also. | |
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849 load_unsigned_short(rdx, Address(rcx, in_bytes(DataLayout::bci_offset()))); |
304 | 850 addptr(rdx, Address(rbx, methodOopDesc::const_offset())); |
851 lea(rdx, Address(rdx, constMethodOopDesc::codes_offset())); | |
852 cmpptr(rdx, rsi); | |
0 | 853 jcc(Assembler::equal, verify_continue); |
854 // rbx,: method | |
855 // rsi: bcp | |
856 // rcx: mdp | |
857 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), rbx, rsi, rcx); | |
858 bind(verify_continue); | |
304 | 859 pop(rdx); |
860 pop(rcx); | |
861 pop(rbx); | |
862 pop(rax); | |
0 | 863 #endif // ASSERT |
864 } | |
865 | |
866 | |
867 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, int constant, Register value) { | |
304 | 868 // %%% this seems to be used to store counter data which is surely 32bits |
869 // however 64bit side stores 64 bits which seems wrong | |
0 | 870 assert(ProfileInterpreter, "must be profiling interpreter"); |
871 Address data(mdp_in, constant); | |
304 | 872 movptr(data, value); |
0 | 873 } |
874 | |
875 | |
876 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
877 int constant, | |
878 bool decrement) { | |
879 // Counter address | |
880 Address data(mdp_in, constant); | |
881 | |
882 increment_mdp_data_at(data, decrement); | |
883 } | |
884 | |
885 | |
886 void InterpreterMacroAssembler::increment_mdp_data_at(Address data, | |
887 bool decrement) { | |
888 | |
889 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
890 assert(ProfileInterpreter, "must be profiling interpreter"); | |
891 | |
304 | 892 // %%% 64bit treats this as 64 bit which seems unlikely |
0 | 893 if (decrement) { |
894 // Decrement the register. Set condition codes. | |
895 addl(data, -DataLayout::counter_increment); | |
896 // If the decrement causes the counter to overflow, stay negative | |
897 Label L; | |
898 jcc(Assembler::negative, L); | |
899 addl(data, DataLayout::counter_increment); | |
900 bind(L); | |
901 } else { | |
902 assert(DataLayout::counter_increment == 1, | |
903 "flow-free idiom only works with 1"); | |
904 // Increment the register. Set carry flag. | |
905 addl(data, DataLayout::counter_increment); | |
906 // If the increment causes the counter to overflow, pull back by 1. | |
907 sbbl(data, 0); | |
908 } | |
909 } | |
910 | |
911 | |
912 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
913 Register reg, | |
914 int constant, | |
915 bool decrement) { | |
916 Address data(mdp_in, reg, Address::times_1, constant); | |
917 | |
918 increment_mdp_data_at(data, decrement); | |
919 } | |
920 | |
921 | |
922 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, int flag_byte_constant) { | |
923 assert(ProfileInterpreter, "must be profiling interpreter"); | |
924 int header_offset = in_bytes(DataLayout::header_offset()); | |
925 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant); | |
926 // Set the flag | |
927 orl(Address(mdp_in, header_offset), header_bits); | |
928 } | |
929 | |
930 | |
931 | |
932 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in, | |
933 int offset, | |
934 Register value, | |
935 Register test_value_out, | |
936 Label& not_equal_continue) { | |
937 assert(ProfileInterpreter, "must be profiling interpreter"); | |
938 if (test_value_out == noreg) { | |
304 | 939 cmpptr(value, Address(mdp_in, offset)); |
0 | 940 } else { |
941 // Put the test value into a register, so caller can use it: | |
304 | 942 movptr(test_value_out, Address(mdp_in, offset)); |
943 cmpptr(test_value_out, value); | |
0 | 944 } |
945 jcc(Assembler::notEqual, not_equal_continue); | |
946 } | |
947 | |
948 | |
949 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp) { | |
950 assert(ProfileInterpreter, "must be profiling interpreter"); | |
951 Address disp_address(mdp_in, offset_of_disp); | |
304 | 952 addptr(mdp_in,disp_address); |
953 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 954 } |
955 | |
956 | |
957 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp) { | |
958 assert(ProfileInterpreter, "must be profiling interpreter"); | |
959 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp); | |
304 | 960 addptr(mdp_in, disp_address); |
961 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 962 } |
963 | |
964 | |
965 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) { | |
966 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 967 addptr(mdp_in, constant); |
968 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 969 } |
970 | |
971 | |
972 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) { | |
973 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 974 push(return_bci); // save/restore across call_VM |
0 | 975 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); |
304 | 976 pop(return_bci); |
0 | 977 } |
978 | |
979 | |
980 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) { | |
981 if (ProfileInterpreter) { | |
982 Label profile_continue; | |
983 | |
984 // If no method data exists, go to profile_continue. | |
985 // Otherwise, assign to mdp | |
986 test_method_data_pointer(mdp, profile_continue); | |
987 | |
988 // We are taking a branch. Increment the taken count. | |
989 // We inline increment_mdp_data_at to return bumped_count in a register | |
990 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset())); | |
991 Address data(mdp, in_bytes(JumpData::taken_offset())); | |
304 | 992 |
993 // %%% 64bit treats these cells as 64 bit but they seem to be 32 bit | |
0 | 994 movl(bumped_count,data); |
995 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
996 addl(bumped_count, DataLayout::counter_increment); | |
997 sbbl(bumped_count, 0); | |
998 movl(data,bumped_count); // Store back out | |
999 | |
1000 // The method data pointer needs to be updated to reflect the new target. | |
1001 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset())); | |
1002 bind (profile_continue); | |
1003 } | |
1004 } | |
1005 | |
1006 | |
1007 void InterpreterMacroAssembler::profile_not_taken_branch(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 taking a branch. Increment the not taken count. | |
1015 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset())); | |
1016 | |
1017 // The method data pointer needs to be updated to correspond to the next bytecode | |
1018 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size())); | |
1019 bind (profile_continue); | |
1020 } | |
1021 } | |
1022 | |
1023 | |
1024 void InterpreterMacroAssembler::profile_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(CounterData::counter_data_size())); | |
1036 bind (profile_continue); | |
1037 } | |
1038 } | |
1039 | |
1040 | |
1041 void InterpreterMacroAssembler::profile_final_call(Register mdp) { | |
1042 if (ProfileInterpreter) { | |
1043 Label profile_continue; | |
1044 | |
1045 // If no method data exists, go to profile_continue. | |
1046 test_method_data_pointer(mdp, profile_continue); | |
1047 | |
1048 // We are making a call. Increment the count. | |
1049 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1050 | |
1051 // The method data pointer needs to be updated to reflect the new target. | |
1052 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size())); | |
1053 bind (profile_continue); | |
1054 } | |
1055 } | |
1056 | |
1057 | |
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1058 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, Register mdp, |
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1059 Register reg2, |
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1060 bool receiver_can_be_null) { |
0 | 1061 if (ProfileInterpreter) { |
1062 Label profile_continue; | |
1063 | |
1064 // If no method data exists, go to profile_continue. | |
1065 test_method_data_pointer(mdp, profile_continue); | |
1066 | |
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1067 Label skip_receiver_profile; |
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1068 if (receiver_can_be_null) { |
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1069 Label not_null; |
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1070 testptr(receiver, receiver); |
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1071 jccb(Assembler::notZero, not_null); |
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1072 // We are making a call. Increment the count for null receiver. |
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1073 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1074 jmp(skip_receiver_profile); |
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1075 bind(not_null); |
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1076 } |
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1077 |
0 | 1078 // Record the receiver type. |
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1079 record_klass_in_profile(receiver, mdp, reg2, true); |
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1080 bind(skip_receiver_profile); |
0 | 1081 |
1082 // The method data pointer needs to be updated to reflect the new target. | |
1083 update_mdp_by_constant(mdp, | |
1084 in_bytes(VirtualCallData:: | |
1085 virtual_call_data_size())); | |
1086 bind(profile_continue); | |
1087 } | |
1088 } | |
1089 | |
1090 | |
1091 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
1092 Register receiver, Register mdp, | |
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1093 Register reg2, int start_row, |
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1094 Label& done, bool is_virtual_call) { |
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1095 if (TypeProfileWidth == 0) { |
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1096 if (is_virtual_call) { |
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1097 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1098 } |
967
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1099 return; |
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1100 } |
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1101 |
0 | 1102 int last_row = VirtualCallData::row_limit() - 1; |
1103 assert(start_row <= last_row, "must be work left to do"); | |
1104 // Test this row for both the receiver and for null. | |
1105 // Take any of three different outcomes: | |
1106 // 1. found receiver => increment count and goto done | |
1107 // 2. found null => keep looking for case 1, maybe allocate this cell | |
1108 // 3. found something else => keep looking for cases 1 and 2 | |
1109 // Case 3 is handled by a recursive call. | |
1110 for (int row = start_row; row <= last_row; row++) { | |
1111 Label next_test; | |
1112 bool test_for_null_also = (row == start_row); | |
1113 | |
1114 // See if the receiver is receiver[n]. | |
1115 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
1116 test_mdp_data_at(mdp, recvr_offset, receiver, | |
1117 (test_for_null_also ? reg2 : noreg), | |
1118 next_test); | |
1119 // (Reg2 now contains the receiver from the CallData.) | |
1120 | |
1121 // The receiver is receiver[n]. Increment count[n]. | |
1122 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
1123 increment_mdp_data_at(mdp, count_offset); | |
1124 jmp(done); | |
1125 bind(next_test); | |
1126 | |
1127 if (row == start_row) { | |
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1128 Label found_null; |
0 | 1129 // Failed the equality check on receiver[n]... Test for null. |
304 | 1130 testptr(reg2, reg2); |
0 | 1131 if (start_row == last_row) { |
1132 // The only thing left to do is handle the null case. | |
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1133 if (is_virtual_call) { |
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1134 jccb(Assembler::zero, found_null); |
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1135 // Receiver did not match any saved receiver and there is no empty row for it. |
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1136 // Increment total counter to indicate polymorphic case. |
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1137 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1138 jmp(done); |
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1139 bind(found_null); |
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1140 } else { |
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1141 jcc(Assembler::notZero, done); |
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1142 } |
0 | 1143 break; |
1144 } | |
1145 // Since null is rare, make it be the branch-taken case. | |
1146 jcc(Assembler::zero, found_null); | |
1147 | |
1148 // Put all the "Case 3" tests here. | |
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1149 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done, is_virtual_call); |
0 | 1150 |
1151 // Found a null. Keep searching for a matching receiver, | |
1152 // but remember that this is an empty (unused) slot. | |
1153 bind(found_null); | |
1154 } | |
1155 } | |
1156 | |
1157 // In the fall-through case, we found no matching receiver, but we | |
1158 // observed the receiver[start_row] is NULL. | |
1159 | |
1160 // Fill in the receiver field and increment the count. | |
1161 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
1162 set_mdp_data_at(mdp, recvr_offset, receiver); | |
1163 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
3960 | 1164 movptr(reg2, (intptr_t)DataLayout::counter_increment); |
0 | 1165 set_mdp_data_at(mdp, count_offset, reg2); |
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1166 if (start_row > 0) { |
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1167 jmp(done); |
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1168 } |
0 | 1169 } |
1170 | |
1171 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
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1172 Register mdp, Register reg2, |
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1173 bool is_virtual_call) { |
0 | 1174 assert(ProfileInterpreter, "must be profiling"); |
1175 Label done; | |
1176 | |
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1177 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done, is_virtual_call); |
0 | 1178 |
1179 bind (done); | |
1180 } | |
1181 | |
1182 void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) { | |
1183 if (ProfileInterpreter) { | |
1184 Label profile_continue; | |
1185 uint row; | |
1186 | |
1187 // If no method data exists, go to profile_continue. | |
1188 test_method_data_pointer(mdp, profile_continue); | |
1189 | |
1190 // Update the total ret count. | |
1191 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1192 | |
1193 for (row = 0; row < RetData::row_limit(); row++) { | |
1194 Label next_test; | |
1195 | |
1196 // See if return_bci is equal to bci[n]: | |
1197 test_mdp_data_at(mdp, in_bytes(RetData::bci_offset(row)), return_bci, | |
1198 noreg, next_test); | |
1199 | |
1200 // return_bci is equal to bci[n]. Increment the count. | |
1201 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row))); | |
1202 | |
1203 // The method data pointer needs to be updated to reflect the new target. | |
1204 update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row))); | |
1205 jmp(profile_continue); | |
1206 bind(next_test); | |
1207 } | |
1208 | |
1209 update_mdp_for_ret(return_bci); | |
1210 | |
1211 bind (profile_continue); | |
1212 } | |
1213 } | |
1214 | |
1215 | |
1216 void InterpreterMacroAssembler::profile_null_seen(Register mdp) { | |
1217 if (ProfileInterpreter) { | |
1218 Label profile_continue; | |
1219 | |
1220 // If no method data exists, go to profile_continue. | |
1221 test_method_data_pointer(mdp, profile_continue); | |
1222 | |
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1223 set_mdp_flag_at(mdp, BitData::null_seen_byte_constant()); |
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1224 |
0 | 1225 // The method data pointer needs to be updated. |
1226 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1227 if (TypeProfileCasts) { | |
1228 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1229 } | |
1230 update_mdp_by_constant(mdp, mdp_delta); | |
1231 | |
1232 bind (profile_continue); | |
1233 } | |
1234 } | |
1235 | |
1236 | |
1237 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) { | |
1238 if (ProfileInterpreter && TypeProfileCasts) { | |
1239 Label profile_continue; | |
1240 | |
1241 // If no method data exists, go to profile_continue. | |
1242 test_method_data_pointer(mdp, profile_continue); | |
1243 | |
1244 int count_offset = in_bytes(CounterData::count_offset()); | |
1245 // Back up the address, since we have already bumped the mdp. | |
1246 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
1247 | |
1248 // *Decrement* the counter. We expect to see zero or small negatives. | |
1249 increment_mdp_data_at(mdp, count_offset, true); | |
1250 | |
1251 bind (profile_continue); | |
1252 } | |
1253 } | |
1254 | |
1255 | |
1256 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) | |
1257 { | |
1258 if (ProfileInterpreter) { | |
1259 Label profile_continue; | |
1260 | |
1261 // If no method data exists, go to profile_continue. | |
1262 test_method_data_pointer(mdp, profile_continue); | |
1263 | |
1264 // The method data pointer needs to be updated. | |
1265 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1266 if (TypeProfileCasts) { | |
1267 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1268 | |
1269 // Record the object type. | |
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1270 record_klass_in_profile(klass, mdp, reg2, false); |
0 | 1271 assert(reg2 == rdi, "we know how to fix this blown reg"); |
1272 restore_locals(); // Restore EDI | |
1273 } | |
1274 update_mdp_by_constant(mdp, mdp_delta); | |
1275 | |
1276 bind(profile_continue); | |
1277 } | |
1278 } | |
1279 | |
1280 | |
1281 void InterpreterMacroAssembler::profile_switch_default(Register mdp) { | |
1282 if (ProfileInterpreter) { | |
1283 Label profile_continue; | |
1284 | |
1285 // If no method data exists, go to profile_continue. | |
1286 test_method_data_pointer(mdp, profile_continue); | |
1287 | |
1288 // Update the default case count | |
1289 increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset())); | |
1290 | |
1291 // The method data pointer needs to be updated. | |
1292 update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset())); | |
1293 | |
1294 bind (profile_continue); | |
1295 } | |
1296 } | |
1297 | |
1298 | |
1299 void InterpreterMacroAssembler::profile_switch_case(Register index, Register mdp, Register reg2) { | |
1300 if (ProfileInterpreter) { | |
1301 Label profile_continue; | |
1302 | |
1303 // If no method data exists, go to profile_continue. | |
1304 test_method_data_pointer(mdp, profile_continue); | |
1305 | |
1306 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes() | |
3960 | 1307 movptr(reg2, (intptr_t)in_bytes(MultiBranchData::per_case_size())); |
304 | 1308 // index is positive and so should have correct value if this code were |
1309 // used on 64bits | |
1310 imulptr(index, reg2); | |
1311 addptr(index, in_bytes(MultiBranchData::case_array_offset())); | |
0 | 1312 |
1313 // Update the case count | |
1314 increment_mdp_data_at(mdp, index, in_bytes(MultiBranchData::relative_count_offset())); | |
1315 | |
1316 // The method data pointer needs to be updated. | |
1317 update_mdp_by_offset(mdp, index, in_bytes(MultiBranchData::relative_displacement_offset())); | |
1318 | |
1319 bind (profile_continue); | |
1320 } | |
1321 } | |
1322 | |
1323 #endif // !CC_INTERP | |
1324 | |
1325 | |
1326 | |
1327 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { | |
1328 if (state == atos) MacroAssembler::verify_oop(reg); | |
1329 } | |
1330 | |
1331 | |
1332 #ifndef CC_INTERP | |
1333 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
1334 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth); | |
1335 } | |
1336 | |
1337 #endif /* CC_INTERP */ | |
1338 | |
1339 | |
1340 void InterpreterMacroAssembler::notify_method_entry() { | |
1341 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
1342 // track stack depth. If it is possible to enter interp_only_mode we add | |
1343 // the code to check if the event should be sent. | |
1344 if (JvmtiExport::can_post_interpreter_events()) { | |
1345 Label L; | |
1346 get_thread(rcx); | |
1347 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
1348 testl(rcx,rcx); | |
1349 jcc(Assembler::zero, L); | |
1350 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry)); | |
1351 bind(L); | |
1352 } | |
1353 | |
1354 { | |
1355 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
1356 get_thread(rcx); | |
1357 get_method(rbx); | |
1358 call_VM_leaf( | |
1359 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), rcx, rbx); | |
1360 } | |
610
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1361 |
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1362 // RedefineClasses() tracing support for obsolete method entry |
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1363 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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1364 get_thread(rcx); |
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1365 get_method(rbx); |
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1366 call_VM_leaf( |
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1367 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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1368 rcx, rbx); |
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1369 } |
0 | 1370 } |
1371 | |
1372 | |
1373 void InterpreterMacroAssembler::notify_method_exit( | |
1374 TosState state, NotifyMethodExitMode mode) { | |
1375 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
1376 // track stack depth. If it is possible to enter interp_only_mode we add | |
1377 // the code to check if the event should be sent. | |
1378 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
1379 Label L; | |
1380 // Note: frame::interpreter_frame_result has a dependency on how the | |
1381 // method result is saved across the call to post_method_exit. If this | |
1382 // is changed then the interpreter_frame_result implementation will | |
1383 // need to be updated too. | |
1384 | |
1385 // For c++ interpreter the result is always stored at a known location in the frame | |
1386 // template interpreter will leave it on the top of the stack. | |
1387 NOT_CC_INTERP(push(state);) | |
1388 get_thread(rcx); | |
1389 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
1390 testl(rcx,rcx); | |
1391 jcc(Assembler::zero, L); | |
1392 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
1393 bind(L); | |
1394 NOT_CC_INTERP(pop(state);) | |
1395 } | |
1396 | |
1397 { | |
1398 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
304 | 1399 NOT_CC_INTERP(push(state)); |
0 | 1400 get_thread(rbx); |
1401 get_method(rcx); | |
1402 call_VM_leaf( | |
1403 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
1404 rbx, rcx); | |
304 | 1405 NOT_CC_INTERP(pop(state)); |
0 | 1406 } |
1407 } | |
1783 | 1408 |
1409 // Jump if ((*counter_addr += increment) & mask) satisfies the condition. | |
1410 void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr, | |
1411 int increment, int mask, | |
1412 Register scratch, bool preloaded, | |
1413 Condition cond, Label* where) { | |
1414 if (!preloaded) { | |
1415 movl(scratch, counter_addr); | |
1416 } | |
1417 incrementl(scratch, increment); | |
1418 movl(counter_addr, scratch); | |
1419 andl(scratch, mask); | |
1420 jcc(cond, *where); | |
1421 } |