Mercurial > hg > truffle
annotate src/cpu/x86/vm/interp_masm_x86_32.cpp @ 6512:edea9ba7ac7b
Windows-specific fix for mx.
author | Christian Haeubl <haeubl@ssw.jku.at> |
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date | Fri, 05 Oct 2012 09:48:01 +0200 |
parents | 1d7922586cf6 |
children | da91efe96a93 |
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 assert((byte_no == TemplateTable::f1_byte && shift_count == ConstantPoolCacheEntry::bytecode_1_shift) || |
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257 (byte_no == TemplateTable::f2_byte && shift_count == ConstantPoolCacheEntry::bytecode_2_shift), |
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258 "correct shift count"); |
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259 shrptr(bytecode, shift_count); |
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260 assert(ConstantPoolCacheEntry::bytecode_1_mask == ConstantPoolCacheEntry::bytecode_2_mask, "common mask"); |
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261 andptr(bytecode, ConstantPoolCacheEntry::bytecode_1_mask); |
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262 } |
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263 |
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264 |
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265 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp, |
1565 | 266 int bcp_offset, size_t index_size) { |
0 | 267 assert(cache != tmp, "must use different register"); |
1565 | 268 get_cache_index_at_bcp(tmp, bcp_offset, index_size); |
0 | 269 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); |
270 // convert from field index to ConstantPoolCacheEntry index | |
271 // and from word offset to byte offset | |
272 shll(tmp, 2 + LogBytesPerWord); | |
304 | 273 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
0 | 274 // skip past the header |
304 | 275 addptr(cache, in_bytes(constantPoolCacheOopDesc::base_offset())); |
276 addptr(cache, tmp); // construct pointer to cache entry | |
0 | 277 } |
278 | |
279 | |
280 // Generate a subtype check: branch to ok_is_subtype if sub_klass is | |
281 // a subtype of super_klass. EAX holds the super_klass. Blows ECX. | |
282 // Resets EDI to locals. Register sub_klass cannot be any of the above. | |
283 void InterpreterMacroAssembler::gen_subtype_check( Register Rsub_klass, Label &ok_is_subtype ) { | |
284 assert( Rsub_klass != rax, "rax, holds superklass" ); | |
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285 assert( Rsub_klass != rcx, "used as a temp" ); |
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286 assert( Rsub_klass != rdi, "used as a temp, restored from locals" ); |
0 | 287 |
288 // Profile the not-null value's klass. | |
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289 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi |
0 | 290 |
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291 // Do the check. |
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292 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx |
0 | 293 |
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294 // Profile the failure of the check. |
0 | 295 profile_typecheck_failed(rcx); // blows rcx |
296 } | |
297 | |
298 void InterpreterMacroAssembler::f2ieee() { | |
299 if (IEEEPrecision) { | |
300 fstp_s(Address(rsp, 0)); | |
301 fld_s(Address(rsp, 0)); | |
302 } | |
303 } | |
304 | |
305 | |
306 void InterpreterMacroAssembler::d2ieee() { | |
307 if (IEEEPrecision) { | |
308 fstp_d(Address(rsp, 0)); | |
309 fld_d(Address(rsp, 0)); | |
310 } | |
311 } | |
312 | |
313 // Java Expression Stack | |
314 | |
315 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
304 | 316 pop(r); |
0 | 317 } |
318 | |
319 void InterpreterMacroAssembler::pop_i(Register r) { | |
304 | 320 pop(r); |
0 | 321 } |
322 | |
323 void InterpreterMacroAssembler::pop_l(Register lo, Register hi) { | |
304 | 324 pop(lo); |
325 pop(hi); | |
0 | 326 } |
327 | |
328 void InterpreterMacroAssembler::pop_f() { | |
329 fld_s(Address(rsp, 0)); | |
304 | 330 addptr(rsp, 1 * wordSize); |
0 | 331 } |
332 | |
333 void InterpreterMacroAssembler::pop_d() { | |
334 fld_d(Address(rsp, 0)); | |
304 | 335 addptr(rsp, 2 * wordSize); |
0 | 336 } |
337 | |
338 | |
339 void InterpreterMacroAssembler::pop(TosState state) { | |
340 switch (state) { | |
341 case atos: pop_ptr(rax); break; | |
342 case btos: // fall through | |
343 case ctos: // fall through | |
344 case stos: // fall through | |
345 case itos: pop_i(rax); break; | |
346 case ltos: pop_l(rax, rdx); break; | |
347 case ftos: pop_f(); break; | |
348 case dtos: pop_d(); break; | |
349 case vtos: /* nothing to do */ break; | |
350 default : ShouldNotReachHere(); | |
351 } | |
352 verify_oop(rax, state); | |
353 } | |
354 | |
355 void InterpreterMacroAssembler::push_ptr(Register r) { | |
304 | 356 push(r); |
0 | 357 } |
358 | |
359 void InterpreterMacroAssembler::push_i(Register r) { | |
304 | 360 push(r); |
0 | 361 } |
362 | |
363 void InterpreterMacroAssembler::push_l(Register lo, Register hi) { | |
304 | 364 push(hi); |
365 push(lo); | |
0 | 366 } |
367 | |
368 void InterpreterMacroAssembler::push_f() { | |
369 // Do not schedule for no AGI! Never write beyond rsp! | |
304 | 370 subptr(rsp, 1 * wordSize); |
0 | 371 fstp_s(Address(rsp, 0)); |
372 } | |
373 | |
374 void InterpreterMacroAssembler::push_d(Register r) { | |
1506 | 375 // Do not schedule for no AGI! Never write beyond rsp! |
376 subptr(rsp, 2 * wordSize); | |
377 fstp_d(Address(rsp, 0)); | |
0 | 378 } |
379 | |
380 | |
381 void InterpreterMacroAssembler::push(TosState state) { | |
382 verify_oop(rax, state); | |
383 switch (state) { | |
384 case atos: push_ptr(rax); break; | |
385 case btos: // fall through | |
386 case ctos: // fall through | |
387 case stos: // fall through | |
388 case itos: push_i(rax); break; | |
389 case ltos: push_l(rax, rdx); break; | |
390 case ftos: push_f(); break; | |
391 case dtos: push_d(rax); break; | |
392 case vtos: /* nothing to do */ break; | |
393 default : ShouldNotReachHere(); | |
394 } | |
395 } | |
396 | |
397 | |
1506 | 398 // Helpers for swap and dup |
399 void InterpreterMacroAssembler::load_ptr(int n, Register val) { | |
304 | 400 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n))); |
0 | 401 } |
402 | |
1506 | 403 void InterpreterMacroAssembler::store_ptr(int n, Register val) { |
404 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val); | |
0 | 405 } |
406 | |
710 | 407 void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() { |
0 | 408 // set sender sp |
304 | 409 lea(rsi, Address(rsp, wordSize)); |
0 | 410 // record last_sp |
304 | 411 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), rsi); |
710 | 412 } |
413 | |
414 | |
415 // Jump to from_interpreted entry of a call unless single stepping is possible | |
416 // in this thread in which case we must call the i2i entry | |
417 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) { | |
418 prepare_to_jump_from_interpreted(); | |
0 | 419 |
420 if (JvmtiExport::can_post_interpreter_events()) { | |
421 Label run_compiled_code; | |
422 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
423 // compiled code in threads for which the event is enabled. Check here for | |
424 // interp_only_mode if these events CAN be enabled. | |
425 get_thread(temp); | |
426 // interp_only is an int, on little endian it is sufficient to test the byte only | |
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427 // Is a cmpl faster? |
0 | 428 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0); |
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429 jccb(Assembler::zero, run_compiled_code); |
0 | 430 jmp(Address(method, methodOopDesc::interpreter_entry_offset())); |
431 bind(run_compiled_code); | |
432 } | |
433 | |
434 jmp(Address(method, methodOopDesc::from_interpreted_offset())); | |
435 | |
436 } | |
437 | |
438 | |
439 // The following two routines provide a hook so that an implementation | |
440 // can schedule the dispatch in two parts. Intel does not do this. | |
441 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) { | |
442 // Nothing Intel-specific to be done here. | |
443 } | |
444 | |
445 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) { | |
446 dispatch_next(state, step); | |
447 } | |
448 | |
449 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table, | |
450 bool verifyoop) { | |
451 verify_FPU(1, state); | |
452 if (VerifyActivationFrameSize) { | |
453 Label L; | |
304 | 454 mov(rcx, rbp); |
455 subptr(rcx, rsp); | |
0 | 456 int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize; |
304 | 457 cmpptr(rcx, min_frame_size); |
0 | 458 jcc(Assembler::greaterEqual, L); |
459 stop("broken stack frame"); | |
460 bind(L); | |
461 } | |
462 if (verifyoop) verify_oop(rax, state); | |
304 | 463 Address index(noreg, rbx, Address::times_ptr); |
0 | 464 ExternalAddress tbl((address)table); |
465 ArrayAddress dispatch(tbl, index); | |
466 jump(dispatch); | |
467 } | |
468 | |
469 | |
470 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
471 dispatch_base(state, Interpreter::dispatch_table(state)); | |
472 } | |
473 | |
474 | |
475 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) { | |
476 dispatch_base(state, Interpreter::normal_table(state)); | |
477 } | |
478 | |
479 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) { | |
480 dispatch_base(state, Interpreter::normal_table(state), false); | |
481 } | |
482 | |
483 | |
484 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) { | |
485 // load next bytecode (load before advancing rsi to prevent AGI) | |
486 load_unsigned_byte(rbx, Address(rsi, step)); | |
487 // advance rsi | |
488 increment(rsi, step); | |
489 dispatch_base(state, Interpreter::dispatch_table(state)); | |
490 } | |
491 | |
492 | |
493 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
494 // load current bytecode | |
495 load_unsigned_byte(rbx, Address(rsi, 0)); | |
496 dispatch_base(state, table); | |
497 } | |
498 | |
499 // remove activation | |
500 // | |
501 // Unlock the receiver if this is a synchronized method. | |
502 // Unlock any Java monitors from syncronized blocks. | |
503 // Remove the activation from the stack. | |
504 // | |
505 // If there are locked Java monitors | |
506 // If throw_monitor_exception | |
507 // throws IllegalMonitorStateException | |
508 // Else if install_monitor_exception | |
509 // installs IllegalMonitorStateException | |
510 // Else | |
511 // no error processing | |
512 void InterpreterMacroAssembler::remove_activation(TosState state, Register ret_addr, | |
513 bool throw_monitor_exception, | |
514 bool install_monitor_exception, | |
515 bool notify_jvmdi) { | |
516 // Note: Registers rax, rdx and FPU ST(0) may be in use for the result | |
517 // check if synchronized method | |
518 Label unlocked, unlock, no_unlock; | |
519 | |
520 get_thread(rcx); | |
521 const Address do_not_unlock_if_synchronized(rcx, | |
522 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
523 | |
524 movbool(rbx, do_not_unlock_if_synchronized); | |
304 | 525 mov(rdi,rbx); |
0 | 526 movbool(do_not_unlock_if_synchronized, false); // reset the flag |
527 | |
304 | 528 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); // get method access flags |
0 | 529 movl(rcx, Address(rbx, methodOopDesc::access_flags_offset())); |
530 | |
531 testl(rcx, JVM_ACC_SYNCHRONIZED); | |
532 jcc(Assembler::zero, unlocked); | |
533 | |
534 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
535 // is set. | |
304 | 536 mov(rcx,rdi); |
0 | 537 testbool(rcx); |
538 jcc(Assembler::notZero, no_unlock); | |
539 | |
540 // unlock monitor | |
541 push(state); // save result | |
542 | |
543 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
544 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
545 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
304 | 546 lea (rdx, monitor); // address of first monitor |
0 | 547 |
304 | 548 movptr (rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
549 testptr(rax, rax); | |
550 jcc (Assembler::notZero, unlock); | |
0 | 551 |
552 pop(state); | |
553 if (throw_monitor_exception) { | |
554 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
555 | |
556 // Entry already unlocked, need to throw exception | |
557 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
558 should_not_reach_here(); | |
559 } else { | |
560 // Monitor already unlocked during a stack unroll. | |
561 // If requested, install an illegal_monitor_state_exception. | |
562 // Continue with stack unrolling. | |
563 if (install_monitor_exception) { | |
564 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
565 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
566 } | |
567 jmp(unlocked); | |
568 } | |
569 | |
570 bind(unlock); | |
571 unlock_object(rdx); | |
572 pop(state); | |
573 | |
574 // Check that for block-structured locking (i.e., that all locked objects has been unlocked) | |
575 bind(unlocked); | |
576 | |
577 // rax, rdx: Might contain return value | |
578 | |
579 // Check that all monitors are unlocked | |
580 { | |
581 Label loop, exception, entry, restart; | |
582 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
583 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
584 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
585 | |
586 bind(restart); | |
304 | 587 movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
588 lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
0 | 589 jmp(entry); |
590 | |
591 // Entry already locked, need to throw exception | |
592 bind(exception); | |
593 | |
594 if (throw_monitor_exception) { | |
595 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
596 | |
597 // Throw exception | |
598 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
599 should_not_reach_here(); | |
600 } else { | |
601 // Stack unrolling. Unlock object and install illegal_monitor_exception | |
602 // Unlock does not block, so don't have to worry about the frame | |
603 | |
604 push(state); | |
304 | 605 mov(rdx, rcx); |
0 | 606 unlock_object(rdx); |
607 pop(state); | |
608 | |
609 if (install_monitor_exception) { | |
610 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
611 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
612 } | |
613 | |
614 jmp(restart); | |
615 } | |
616 | |
617 bind(loop); | |
304 | 618 cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
0 | 619 jcc(Assembler::notEqual, exception); |
620 | |
304 | 621 addptr(rcx, entry_size); // otherwise advance to next entry |
0 | 622 bind(entry); |
304 | 623 cmpptr(rcx, rbx); // check if bottom reached |
0 | 624 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
625 } | |
626 | |
627 bind(no_unlock); | |
628 | |
629 // jvmti support | |
630 if (notify_jvmdi) { | |
631 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA | |
632 } else { | |
633 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA | |
634 } | |
635 | |
636 // remove activation | |
304 | 637 movptr(rbx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 638 leave(); // remove frame anchor |
304 | 639 pop(ret_addr); // get return address |
640 mov(rsp, rbx); // set sp to sender sp | |
0 | 641 if (UseSSE) { |
642 // float and double are returned in xmm register in SSE-mode | |
643 if (state == ftos && UseSSE >= 1) { | |
304 | 644 subptr(rsp, wordSize); |
0 | 645 fstp_s(Address(rsp, 0)); |
646 movflt(xmm0, Address(rsp, 0)); | |
304 | 647 addptr(rsp, wordSize); |
0 | 648 } else if (state == dtos && UseSSE >= 2) { |
304 | 649 subptr(rsp, 2*wordSize); |
0 | 650 fstp_d(Address(rsp, 0)); |
651 movdbl(xmm0, Address(rsp, 0)); | |
304 | 652 addptr(rsp, 2*wordSize); |
0 | 653 } |
654 } | |
655 } | |
656 | |
657 #endif /* !CC_INTERP */ | |
658 | |
659 | |
660 // Lock object | |
661 // | |
662 // Argument: rdx : Points to BasicObjectLock to be used for locking. Must | |
663 // be initialized with object to lock | |
664 void InterpreterMacroAssembler::lock_object(Register lock_reg) { | |
665 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
666 | |
667 if (UseHeavyMonitors) { | |
668 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
669 } else { | |
670 | |
671 Label done; | |
672 | |
673 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
674 const Register obj_reg = rcx; // Will contain the oop | |
675 | |
676 const int obj_offset = BasicObjectLock::obj_offset_in_bytes(); | |
677 const int lock_offset = BasicObjectLock::lock_offset_in_bytes (); | |
678 const int mark_offset = lock_offset + BasicLock::displaced_header_offset_in_bytes(); | |
679 | |
680 Label slow_case; | |
681 | |
682 // Load object pointer into obj_reg %rcx | |
304 | 683 movptr(obj_reg, Address(lock_reg, obj_offset)); |
0 | 684 |
685 if (UseBiasedLocking) { | |
686 // Note: we use noreg for the temporary register since it's hard | |
687 // to come up with a free register on all incoming code paths | |
688 biased_locking_enter(lock_reg, obj_reg, swap_reg, noreg, false, done, &slow_case); | |
689 } | |
690 | |
691 // Load immediate 1 into swap_reg %rax, | |
304 | 692 movptr(swap_reg, (int32_t)1); |
0 | 693 |
694 // Load (object->mark() | 1) into swap_reg %rax, | |
304 | 695 orptr(swap_reg, Address(obj_reg, 0)); |
0 | 696 |
697 // Save (object->mark() | 1) into BasicLock's displaced header | |
304 | 698 movptr(Address(lock_reg, mark_offset), swap_reg); |
0 | 699 |
700 assert(lock_offset == 0, "displached header must be first word in BasicObjectLock"); | |
701 if (os::is_MP()) { | |
702 lock(); | |
703 } | |
304 | 704 cmpxchgptr(lock_reg, Address(obj_reg, 0)); |
0 | 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 // Test if the oopMark is an obvious stack pointer, i.e., | |
712 // 1) (mark & 3) == 0, and | |
713 // 2) rsp <= mark < mark + os::pagesize() | |
714 // | |
715 // These 3 tests can be done by evaluating the following | |
716 // expression: ((mark - rsp) & (3 - os::vm_page_size())), | |
717 // assuming both stack pointer and pagesize have their | |
718 // least significant 2 bits clear. | |
719 // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg | |
304 | 720 subptr(swap_reg, rsp); |
721 andptr(swap_reg, 3 - os::vm_page_size()); | |
0 | 722 |
723 // Save the test result, for recursive case, the result is zero | |
304 | 724 movptr(Address(lock_reg, mark_offset), swap_reg); |
0 | 725 |
726 if (PrintBiasedLockingStatistics) { | |
727 cond_inc32(Assembler::zero, | |
728 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
729 } | |
730 jcc(Assembler::zero, done); | |
731 | |
732 bind(slow_case); | |
733 | |
734 // Call the runtime routine for slow case | |
735 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
736 | |
737 bind(done); | |
738 } | |
739 } | |
740 | |
741 | |
742 // Unlocks an object. Used in monitorexit bytecode and remove_activation. | |
743 // | |
744 // Argument: rdx : Points to BasicObjectLock structure for lock | |
745 // Throw an IllegalMonitorException if object is not locked by current thread | |
746 // | |
747 // Uses: rax, rbx, rcx, rdx | |
748 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
749 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
750 | |
751 if (UseHeavyMonitors) { | |
752 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); | |
753 } else { | |
754 Label done; | |
755 | |
756 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
757 const Register header_reg = rbx; // Will contain the old oopMark | |
758 const Register obj_reg = rcx; // Will contain the oop | |
759 | |
760 save_bcp(); // Save in case of exception | |
761 | |
762 // Convert from BasicObjectLock structure to object and BasicLock structure | |
763 // Store the BasicLock address into %rax, | |
304 | 764 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes())); |
0 | 765 |
766 // Load oop into obj_reg(%rcx) | |
304 | 767 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ())); |
0 | 768 |
769 // Free entry | |
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770 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD); |
0 | 771 |
772 if (UseBiasedLocking) { | |
773 biased_locking_exit(obj_reg, header_reg, done); | |
774 } | |
775 | |
776 // Load the old header from BasicLock structure | |
304 | 777 movptr(header_reg, Address(swap_reg, BasicLock::displaced_header_offset_in_bytes())); |
0 | 778 |
779 // Test for recursion | |
304 | 780 testptr(header_reg, header_reg); |
0 | 781 |
782 // zero for recursive case | |
783 jcc(Assembler::zero, done); | |
784 | |
785 // Atomic swap back the old header | |
786 if (os::is_MP()) lock(); | |
304 | 787 cmpxchgptr(header_reg, Address(obj_reg, 0)); |
0 | 788 |
789 // zero for recursive case | |
790 jcc(Assembler::zero, done); | |
791 | |
792 // Call the runtime routine for slow case. | |
304 | 793 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), obj_reg); // restore obj |
0 | 794 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); |
795 | |
796 bind(done); | |
797 | |
798 restore_bcp(); | |
799 } | |
800 } | |
801 | |
802 | |
803 #ifndef CC_INTERP | |
804 | |
805 // Test ImethodDataPtr. If it is null, continue at the specified label | |
806 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) { | |
807 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 808 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize)); |
809 testptr(mdp, mdp); | |
0 | 810 jcc(Assembler::zero, zero_continue); |
811 } | |
812 | |
813 | |
814 // Set the method data pointer for the current bcp. | |
815 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
816 assert(ProfileInterpreter, "must be profiling interpreter"); | |
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817 Label set_mdp; |
304 | 818 push(rax); |
819 push(rbx); | |
0 | 820 |
821 get_method(rbx); | |
822 // Test MDO to avoid the call if it is NULL. | |
304 | 823 movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
824 testptr(rax, rax); | |
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825 jcc(Assembler::zero, set_mdp); |
0 | 826 // rbx,: method |
827 // rsi: bcp | |
828 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, rsi); | |
829 // rax,: mdi | |
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830 // mdo is guaranteed to be non-zero here, we checked for it before the call. |
304 | 831 movptr(rbx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
832 addptr(rbx, in_bytes(methodDataOopDesc::data_offset())); | |
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833 addptr(rax, rbx); |
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834 bind(set_mdp); |
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835 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); |
304 | 836 pop(rbx); |
837 pop(rax); | |
0 | 838 } |
839 | |
840 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
841 assert(ProfileInterpreter, "must be profiling interpreter"); | |
842 #ifdef ASSERT | |
843 Label verify_continue; | |
304 | 844 push(rax); |
845 push(rbx); | |
846 push(rcx); | |
847 push(rdx); | |
0 | 848 test_method_data_pointer(rcx, verify_continue); // If mdp is zero, continue |
849 get_method(rbx); | |
850 | |
851 // If the mdp is valid, it will point to a DataLayout header which is | |
852 // consistent with the bcp. The converse is highly probable also. | |
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853 load_unsigned_short(rdx, Address(rcx, in_bytes(DataLayout::bci_offset()))); |
304 | 854 addptr(rdx, Address(rbx, methodOopDesc::const_offset())); |
855 lea(rdx, Address(rdx, constMethodOopDesc::codes_offset())); | |
856 cmpptr(rdx, rsi); | |
0 | 857 jcc(Assembler::equal, verify_continue); |
858 // rbx,: method | |
859 // rsi: bcp | |
860 // rcx: mdp | |
861 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), rbx, rsi, rcx); | |
862 bind(verify_continue); | |
304 | 863 pop(rdx); |
864 pop(rcx); | |
865 pop(rbx); | |
866 pop(rax); | |
0 | 867 #endif // ASSERT |
868 } | |
869 | |
870 | |
871 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, int constant, Register value) { | |
304 | 872 // %%% this seems to be used to store counter data which is surely 32bits |
873 // however 64bit side stores 64 bits which seems wrong | |
0 | 874 assert(ProfileInterpreter, "must be profiling interpreter"); |
875 Address data(mdp_in, constant); | |
304 | 876 movptr(data, value); |
0 | 877 } |
878 | |
879 | |
880 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
881 int constant, | |
882 bool decrement) { | |
883 // Counter address | |
884 Address data(mdp_in, constant); | |
885 | |
886 increment_mdp_data_at(data, decrement); | |
887 } | |
888 | |
889 | |
890 void InterpreterMacroAssembler::increment_mdp_data_at(Address data, | |
891 bool decrement) { | |
892 | |
893 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
894 assert(ProfileInterpreter, "must be profiling interpreter"); | |
895 | |
304 | 896 // %%% 64bit treats this as 64 bit which seems unlikely |
0 | 897 if (decrement) { |
898 // Decrement the register. Set condition codes. | |
899 addl(data, -DataLayout::counter_increment); | |
900 // If the decrement causes the counter to overflow, stay negative | |
901 Label L; | |
902 jcc(Assembler::negative, L); | |
903 addl(data, DataLayout::counter_increment); | |
904 bind(L); | |
905 } else { | |
906 assert(DataLayout::counter_increment == 1, | |
907 "flow-free idiom only works with 1"); | |
908 // Increment the register. Set carry flag. | |
909 addl(data, DataLayout::counter_increment); | |
910 // If the increment causes the counter to overflow, pull back by 1. | |
911 sbbl(data, 0); | |
912 } | |
913 } | |
914 | |
915 | |
916 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
917 Register reg, | |
918 int constant, | |
919 bool decrement) { | |
920 Address data(mdp_in, reg, Address::times_1, constant); | |
921 | |
922 increment_mdp_data_at(data, decrement); | |
923 } | |
924 | |
925 | |
926 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, int flag_byte_constant) { | |
927 assert(ProfileInterpreter, "must be profiling interpreter"); | |
928 int header_offset = in_bytes(DataLayout::header_offset()); | |
929 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant); | |
930 // Set the flag | |
931 orl(Address(mdp_in, header_offset), header_bits); | |
932 } | |
933 | |
934 | |
935 | |
936 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in, | |
937 int offset, | |
938 Register value, | |
939 Register test_value_out, | |
940 Label& not_equal_continue) { | |
941 assert(ProfileInterpreter, "must be profiling interpreter"); | |
942 if (test_value_out == noreg) { | |
304 | 943 cmpptr(value, Address(mdp_in, offset)); |
0 | 944 } else { |
945 // Put the test value into a register, so caller can use it: | |
304 | 946 movptr(test_value_out, Address(mdp_in, offset)); |
947 cmpptr(test_value_out, value); | |
0 | 948 } |
949 jcc(Assembler::notEqual, not_equal_continue); | |
950 } | |
951 | |
952 | |
953 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp) { | |
954 assert(ProfileInterpreter, "must be profiling interpreter"); | |
955 Address disp_address(mdp_in, offset_of_disp); | |
304 | 956 addptr(mdp_in,disp_address); |
957 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 958 } |
959 | |
960 | |
961 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp) { | |
962 assert(ProfileInterpreter, "must be profiling interpreter"); | |
963 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp); | |
304 | 964 addptr(mdp_in, disp_address); |
965 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 966 } |
967 | |
968 | |
969 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) { | |
970 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 971 addptr(mdp_in, constant); |
972 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 973 } |
974 | |
975 | |
976 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) { | |
977 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 978 push(return_bci); // save/restore across call_VM |
0 | 979 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); |
304 | 980 pop(return_bci); |
0 | 981 } |
982 | |
983 | |
984 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) { | |
985 if (ProfileInterpreter) { | |
986 Label profile_continue; | |
987 | |
988 // If no method data exists, go to profile_continue. | |
989 // Otherwise, assign to mdp | |
990 test_method_data_pointer(mdp, profile_continue); | |
991 | |
992 // We are taking a branch. Increment the taken count. | |
993 // We inline increment_mdp_data_at to return bumped_count in a register | |
994 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset())); | |
995 Address data(mdp, in_bytes(JumpData::taken_offset())); | |
304 | 996 |
997 // %%% 64bit treats these cells as 64 bit but they seem to be 32 bit | |
0 | 998 movl(bumped_count,data); |
999 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
1000 addl(bumped_count, DataLayout::counter_increment); | |
1001 sbbl(bumped_count, 0); | |
1002 movl(data,bumped_count); // Store back out | |
1003 | |
1004 // The method data pointer needs to be updated to reflect the new target. | |
1005 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset())); | |
1006 bind (profile_continue); | |
1007 } | |
1008 } | |
1009 | |
1010 | |
1011 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) { | |
1012 if (ProfileInterpreter) { | |
1013 Label profile_continue; | |
1014 | |
1015 // If no method data exists, go to profile_continue. | |
1016 test_method_data_pointer(mdp, profile_continue); | |
1017 | |
1018 // We are taking a branch. Increment the not taken count. | |
1019 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset())); | |
1020 | |
1021 // The method data pointer needs to be updated to correspond to the next bytecode | |
1022 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size())); | |
1023 bind (profile_continue); | |
1024 } | |
1025 } | |
1026 | |
1027 | |
1028 void InterpreterMacroAssembler::profile_call(Register mdp) { | |
1029 if (ProfileInterpreter) { | |
1030 Label profile_continue; | |
1031 | |
1032 // If no method data exists, go to profile_continue. | |
1033 test_method_data_pointer(mdp, profile_continue); | |
1034 | |
1035 // We are making a call. Increment the count. | |
1036 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1037 | |
1038 // The method data pointer needs to be updated to reflect the new target. | |
1039 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size())); | |
1040 bind (profile_continue); | |
1041 } | |
1042 } | |
1043 | |
1044 | |
1045 void InterpreterMacroAssembler::profile_final_call(Register mdp) { | |
1046 if (ProfileInterpreter) { | |
1047 Label profile_continue; | |
1048 | |
1049 // If no method data exists, go to profile_continue. | |
1050 test_method_data_pointer(mdp, profile_continue); | |
1051 | |
1052 // We are making a call. Increment the count. | |
1053 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1054 | |
1055 // The method data pointer needs to be updated to reflect the new target. | |
1056 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size())); | |
1057 bind (profile_continue); | |
1058 } | |
1059 } | |
1060 | |
1061 | |
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1062 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, Register mdp, |
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1063 Register reg2, |
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1064 bool receiver_can_be_null) { |
0 | 1065 if (ProfileInterpreter) { |
1066 Label profile_continue; | |
1067 | |
1068 // If no method data exists, go to profile_continue. | |
1069 test_method_data_pointer(mdp, profile_continue); | |
1070 | |
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1071 Label skip_receiver_profile; |
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1072 if (receiver_can_be_null) { |
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1073 Label not_null; |
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1074 testptr(receiver, receiver); |
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1075 jccb(Assembler::notZero, not_null); |
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1076 // We are making a call. Increment the count for null receiver. |
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1077 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1078 jmp(skip_receiver_profile); |
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1079 bind(not_null); |
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1080 } |
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1081 |
0 | 1082 // Record the receiver type. |
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1083 record_klass_in_profile(receiver, mdp, reg2, true); |
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1084 bind(skip_receiver_profile); |
0 | 1085 |
1086 // The method data pointer needs to be updated to reflect the new target. | |
1087 update_mdp_by_constant(mdp, | |
1088 in_bytes(VirtualCallData:: | |
1089 virtual_call_data_size())); | |
1090 bind(profile_continue); | |
1091 } | |
1092 } | |
1093 | |
1094 | |
1095 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
1096 Register receiver, Register mdp, | |
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1097 Register reg2, int start_row, |
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1098 Label& done, bool is_virtual_call) { |
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1099 if (TypeProfileWidth == 0) { |
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1100 if (is_virtual_call) { |
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1101 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1102 } |
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1103 return; |
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1104 } |
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1105 |
0 | 1106 int last_row = VirtualCallData::row_limit() - 1; |
1107 assert(start_row <= last_row, "must be work left to do"); | |
1108 // Test this row for both the receiver and for null. | |
1109 // Take any of three different outcomes: | |
1110 // 1. found receiver => increment count and goto done | |
1111 // 2. found null => keep looking for case 1, maybe allocate this cell | |
1112 // 3. found something else => keep looking for cases 1 and 2 | |
1113 // Case 3 is handled by a recursive call. | |
1114 for (int row = start_row; row <= last_row; row++) { | |
1115 Label next_test; | |
1116 bool test_for_null_also = (row == start_row); | |
1117 | |
1118 // See if the receiver is receiver[n]. | |
1119 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
1120 test_mdp_data_at(mdp, recvr_offset, receiver, | |
1121 (test_for_null_also ? reg2 : noreg), | |
1122 next_test); | |
1123 // (Reg2 now contains the receiver from the CallData.) | |
1124 | |
1125 // The receiver is receiver[n]. Increment count[n]. | |
1126 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
1127 increment_mdp_data_at(mdp, count_offset); | |
1128 jmp(done); | |
1129 bind(next_test); | |
1130 | |
1131 if (row == start_row) { | |
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1132 Label found_null; |
0 | 1133 // Failed the equality check on receiver[n]... Test for null. |
304 | 1134 testptr(reg2, reg2); |
0 | 1135 if (start_row == last_row) { |
1136 // The only thing left to do is handle the null case. | |
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1137 if (is_virtual_call) { |
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1138 jccb(Assembler::zero, found_null); |
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1139 // Receiver did not match any saved receiver and there is no empty row for it. |
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1140 // Increment total counter to indicate polymorphic case. |
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1141 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1142 jmp(done); |
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1143 bind(found_null); |
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1144 } else { |
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1145 jcc(Assembler::notZero, done); |
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1146 } |
0 | 1147 break; |
1148 } | |
1149 // Since null is rare, make it be the branch-taken case. | |
1150 jcc(Assembler::zero, found_null); | |
1151 | |
1152 // Put all the "Case 3" tests here. | |
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1153 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done, is_virtual_call); |
0 | 1154 |
1155 // Found a null. Keep searching for a matching receiver, | |
1156 // but remember that this is an empty (unused) slot. | |
1157 bind(found_null); | |
1158 } | |
1159 } | |
1160 | |
1161 // In the fall-through case, we found no matching receiver, but we | |
1162 // observed the receiver[start_row] is NULL. | |
1163 | |
1164 // Fill in the receiver field and increment the count. | |
1165 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
1166 set_mdp_data_at(mdp, recvr_offset, receiver); | |
1167 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
3960 | 1168 movptr(reg2, (intptr_t)DataLayout::counter_increment); |
0 | 1169 set_mdp_data_at(mdp, count_offset, reg2); |
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1170 if (start_row > 0) { |
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1171 jmp(done); |
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1172 } |
0 | 1173 } |
1174 | |
1175 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
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1176 Register mdp, Register reg2, |
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1177 bool is_virtual_call) { |
0 | 1178 assert(ProfileInterpreter, "must be profiling"); |
1179 Label done; | |
1180 | |
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1181 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done, is_virtual_call); |
0 | 1182 |
1183 bind (done); | |
1184 } | |
1185 | |
1186 void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) { | |
1187 if (ProfileInterpreter) { | |
1188 Label profile_continue; | |
1189 uint row; | |
1190 | |
1191 // If no method data exists, go to profile_continue. | |
1192 test_method_data_pointer(mdp, profile_continue); | |
1193 | |
1194 // Update the total ret count. | |
1195 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1196 | |
1197 for (row = 0; row < RetData::row_limit(); row++) { | |
1198 Label next_test; | |
1199 | |
1200 // See if return_bci is equal to bci[n]: | |
1201 test_mdp_data_at(mdp, in_bytes(RetData::bci_offset(row)), return_bci, | |
1202 noreg, next_test); | |
1203 | |
1204 // return_bci is equal to bci[n]. Increment the count. | |
1205 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row))); | |
1206 | |
1207 // The method data pointer needs to be updated to reflect the new target. | |
1208 update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row))); | |
1209 jmp(profile_continue); | |
1210 bind(next_test); | |
1211 } | |
1212 | |
1213 update_mdp_for_ret(return_bci); | |
1214 | |
1215 bind (profile_continue); | |
1216 } | |
1217 } | |
1218 | |
1219 | |
1220 void InterpreterMacroAssembler::profile_null_seen(Register mdp) { | |
1221 if (ProfileInterpreter) { | |
1222 Label profile_continue; | |
1223 | |
1224 // If no method data exists, go to profile_continue. | |
1225 test_method_data_pointer(mdp, profile_continue); | |
1226 | |
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1227 set_mdp_flag_at(mdp, BitData::null_seen_byte_constant()); |
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1228 |
0 | 1229 // The method data pointer needs to be updated. |
1230 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1231 if (TypeProfileCasts) { | |
1232 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1233 } | |
1234 update_mdp_by_constant(mdp, mdp_delta); | |
1235 | |
1236 bind (profile_continue); | |
1237 } | |
1238 } | |
1239 | |
1240 | |
1241 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) { | |
1242 if (ProfileInterpreter && TypeProfileCasts) { | |
1243 Label profile_continue; | |
1244 | |
1245 // If no method data exists, go to profile_continue. | |
1246 test_method_data_pointer(mdp, profile_continue); | |
1247 | |
1248 int count_offset = in_bytes(CounterData::count_offset()); | |
1249 // Back up the address, since we have already bumped the mdp. | |
1250 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
1251 | |
1252 // *Decrement* the counter. We expect to see zero or small negatives. | |
1253 increment_mdp_data_at(mdp, count_offset, true); | |
1254 | |
1255 bind (profile_continue); | |
1256 } | |
1257 } | |
1258 | |
1259 | |
1260 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) | |
1261 { | |
1262 if (ProfileInterpreter) { | |
1263 Label profile_continue; | |
1264 | |
1265 // If no method data exists, go to profile_continue. | |
1266 test_method_data_pointer(mdp, profile_continue); | |
1267 | |
1268 // The method data pointer needs to be updated. | |
1269 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1270 if (TypeProfileCasts) { | |
1271 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1272 | |
1273 // Record the object type. | |
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1274 record_klass_in_profile(klass, mdp, reg2, false); |
0 | 1275 assert(reg2 == rdi, "we know how to fix this blown reg"); |
1276 restore_locals(); // Restore EDI | |
1277 } | |
1278 update_mdp_by_constant(mdp, mdp_delta); | |
1279 | |
1280 bind(profile_continue); | |
1281 } | |
1282 } | |
1283 | |
1284 | |
1285 void InterpreterMacroAssembler::profile_switch_default(Register mdp) { | |
1286 if (ProfileInterpreter) { | |
1287 Label profile_continue; | |
1288 | |
1289 // If no method data exists, go to profile_continue. | |
1290 test_method_data_pointer(mdp, profile_continue); | |
1291 | |
1292 // Update the default case count | |
1293 increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset())); | |
1294 | |
1295 // The method data pointer needs to be updated. | |
1296 update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset())); | |
1297 | |
1298 bind (profile_continue); | |
1299 } | |
1300 } | |
1301 | |
1302 | |
1303 void InterpreterMacroAssembler::profile_switch_case(Register index, Register mdp, Register reg2) { | |
1304 if (ProfileInterpreter) { | |
1305 Label profile_continue; | |
1306 | |
1307 // If no method data exists, go to profile_continue. | |
1308 test_method_data_pointer(mdp, profile_continue); | |
1309 | |
1310 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes() | |
3960 | 1311 movptr(reg2, (intptr_t)in_bytes(MultiBranchData::per_case_size())); |
304 | 1312 // index is positive and so should have correct value if this code were |
1313 // used on 64bits | |
1314 imulptr(index, reg2); | |
1315 addptr(index, in_bytes(MultiBranchData::case_array_offset())); | |
0 | 1316 |
1317 // Update the case count | |
1318 increment_mdp_data_at(mdp, index, in_bytes(MultiBranchData::relative_count_offset())); | |
1319 | |
1320 // The method data pointer needs to be updated. | |
1321 update_mdp_by_offset(mdp, index, in_bytes(MultiBranchData::relative_displacement_offset())); | |
1322 | |
1323 bind (profile_continue); | |
1324 } | |
1325 } | |
1326 | |
1327 #endif // !CC_INTERP | |
1328 | |
1329 | |
1330 | |
1331 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { | |
1332 if (state == atos) MacroAssembler::verify_oop(reg); | |
1333 } | |
1334 | |
1335 | |
1336 #ifndef CC_INTERP | |
1337 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
1338 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth); | |
1339 } | |
1340 | |
1341 #endif /* CC_INTERP */ | |
1342 | |
1343 | |
1344 void InterpreterMacroAssembler::notify_method_entry() { | |
1345 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
1346 // track stack depth. If it is possible to enter interp_only_mode we add | |
1347 // the code to check if the event should be sent. | |
1348 if (JvmtiExport::can_post_interpreter_events()) { | |
1349 Label L; | |
1350 get_thread(rcx); | |
1351 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
1352 testl(rcx,rcx); | |
1353 jcc(Assembler::zero, L); | |
1354 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry)); | |
1355 bind(L); | |
1356 } | |
1357 | |
1358 { | |
1359 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
1360 get_thread(rcx); | |
1361 get_method(rbx); | |
1362 call_VM_leaf( | |
1363 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), rcx, rbx); | |
1364 } | |
610
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1365 |
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1366 // RedefineClasses() tracing support for obsolete method entry |
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1367 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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1368 get_thread(rcx); |
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1369 get_method(rbx); |
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1370 call_VM_leaf( |
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1371 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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1372 rcx, rbx); |
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1373 } |
0 | 1374 } |
1375 | |
1376 | |
1377 void InterpreterMacroAssembler::notify_method_exit( | |
1378 TosState state, NotifyMethodExitMode mode) { | |
1379 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
1380 // track stack depth. If it is possible to enter interp_only_mode we add | |
1381 // the code to check if the event should be sent. | |
1382 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
1383 Label L; | |
1384 // Note: frame::interpreter_frame_result has a dependency on how the | |
1385 // method result is saved across the call to post_method_exit. If this | |
1386 // is changed then the interpreter_frame_result implementation will | |
1387 // need to be updated too. | |
1388 | |
1389 // For c++ interpreter the result is always stored at a known location in the frame | |
1390 // template interpreter will leave it on the top of the stack. | |
1391 NOT_CC_INTERP(push(state);) | |
1392 get_thread(rcx); | |
1393 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
1394 testl(rcx,rcx); | |
1395 jcc(Assembler::zero, L); | |
1396 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
1397 bind(L); | |
1398 NOT_CC_INTERP(pop(state);) | |
1399 } | |
1400 | |
1401 { | |
1402 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
304 | 1403 NOT_CC_INTERP(push(state)); |
0 | 1404 get_thread(rbx); |
1405 get_method(rcx); | |
1406 call_VM_leaf( | |
1407 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
1408 rbx, rcx); | |
304 | 1409 NOT_CC_INTERP(pop(state)); |
0 | 1410 } |
1411 } | |
1783 | 1412 |
1413 // Jump if ((*counter_addr += increment) & mask) satisfies the condition. | |
1414 void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr, | |
1415 int increment, int mask, | |
1416 Register scratch, bool preloaded, | |
1417 Condition cond, Label* where) { | |
1418 if (!preloaded) { | |
1419 movl(scratch, counter_addr); | |
1420 } | |
1421 incrementl(scratch, increment); | |
1422 movl(counter_addr, scratch); | |
1423 andl(scratch, mask); | |
1424 jcc(cond, *where); | |
1425 } |