Mercurial > hg > truffle
annotate src/share/vm/interpreter/bytecodeInterpreter.cpp @ 14411:bdd155477289
8023033: PPC64 (part 13): basic changes for AIX
Summary: Added AIX includes alpha-sorted before BSD. Fix compilation issues with xlC in shared code. Basic shared platform dependend adaption (vm_version etc.).
Reviewed-by: kvn, dholmes, stefank
| author | goetz |
|---|---|
| date | Thu, 22 Aug 2013 09:39:54 -0700 |
| parents | 6cc7093e1341 |
| children | f3806614494a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2002, 2012, 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 // no precompiled headers |
| 26 #include "classfile/vmSymbols.hpp" | |
| 27 #include "gc_interface/collectedHeap.hpp" | |
| 28 #include "interpreter/bytecodeHistogram.hpp" | |
| 29 #include "interpreter/bytecodeInterpreter.hpp" | |
| 30 #include "interpreter/bytecodeInterpreter.inline.hpp" | |
| 31 #include "interpreter/interpreter.hpp" | |
| 32 #include "interpreter/interpreterRuntime.hpp" | |
| 33 #include "memory/resourceArea.hpp" | |
| 10233 | 34 #include "oops/methodCounters.hpp" |
| 1972 | 35 #include "oops/objArrayKlass.hpp" |
| 36 #include "oops/oop.inline.hpp" | |
| 37 #include "prims/jvmtiExport.hpp" | |
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38 #include "prims/jvmtiThreadState.hpp" |
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39 #include "runtime/biasedLocking.hpp" |
| 1972 | 40 #include "runtime/frame.inline.hpp" |
| 41 #include "runtime/handles.inline.hpp" | |
| 42 #include "runtime/interfaceSupport.hpp" | |
| 43 #include "runtime/sharedRuntime.hpp" | |
| 44 #include "runtime/threadCritical.hpp" | |
| 45 #include "utilities/exceptions.hpp" | |
| 46 #ifdef TARGET_OS_ARCH_linux_x86 | |
| 47 # include "orderAccess_linux_x86.inline.hpp" | |
| 48 #endif | |
| 49 #ifdef TARGET_OS_ARCH_linux_sparc | |
| 50 # include "orderAccess_linux_sparc.inline.hpp" | |
| 51 #endif | |
| 52 #ifdef TARGET_OS_ARCH_linux_zero | |
| 53 # include "orderAccess_linux_zero.inline.hpp" | |
| 54 #endif | |
| 55 #ifdef TARGET_OS_ARCH_solaris_x86 | |
| 56 # include "orderAccess_solaris_x86.inline.hpp" | |
| 57 #endif | |
| 58 #ifdef TARGET_OS_ARCH_solaris_sparc | |
| 59 # include "orderAccess_solaris_sparc.inline.hpp" | |
| 60 #endif | |
| 61 #ifdef TARGET_OS_ARCH_windows_x86 | |
| 62 # include "orderAccess_windows_x86.inline.hpp" | |
| 63 #endif | |
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64 #ifdef TARGET_OS_ARCH_linux_arm |
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65 # include "orderAccess_linux_arm.inline.hpp" |
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66 #endif |
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67 #ifdef TARGET_OS_ARCH_linux_ppc |
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68 # include "orderAccess_linux_ppc.inline.hpp" |
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69 #endif |
| 14411 | 70 #ifdef TARGET_OS_ARCH_aix_ppc |
| 71 # include "orderAccess_aix_ppc.inline.hpp" | |
| 72 #endif | |
| 3960 | 73 #ifdef TARGET_OS_ARCH_bsd_x86 |
| 74 # include "orderAccess_bsd_x86.inline.hpp" | |
| 75 #endif | |
| 76 #ifdef TARGET_OS_ARCH_bsd_zero | |
| 77 # include "orderAccess_bsd_zero.inline.hpp" | |
| 78 #endif | |
| 1972 | 79 |
| 0 | 80 |
| 81 // no precompiled headers | |
| 82 #ifdef CC_INTERP | |
| 83 | |
| 84 /* | |
| 85 * USELABELS - If using GCC, then use labels for the opcode dispatching | |
| 86 * rather -then a switch statement. This improves performance because it | |
| 87 * gives us the oportunity to have the instructions that calculate the | |
| 88 * next opcode to jump to be intermixed with the rest of the instructions | |
| 89 * that implement the opcode (see UPDATE_PC_AND_TOS_AND_CONTINUE macro). | |
| 90 */ | |
| 91 #undef USELABELS | |
| 92 #ifdef __GNUC__ | |
| 93 /* | |
| 94 ASSERT signifies debugging. It is much easier to step thru bytecodes if we | |
| 95 don't use the computed goto approach. | |
| 96 */ | |
| 97 #ifndef ASSERT | |
| 98 #define USELABELS | |
| 99 #endif | |
| 100 #endif | |
| 101 | |
| 102 #undef CASE | |
| 103 #ifdef USELABELS | |
| 104 #define CASE(opcode) opc ## opcode | |
| 105 #define DEFAULT opc_default | |
| 106 #else | |
| 107 #define CASE(opcode) case Bytecodes:: opcode | |
| 108 #define DEFAULT default | |
| 109 #endif | |
| 110 | |
| 111 /* | |
| 112 * PREFETCH_OPCCODE - Some compilers do better if you prefetch the next | |
| 113 * opcode before going back to the top of the while loop, rather then having | |
| 114 * the top of the while loop handle it. This provides a better opportunity | |
| 115 * for instruction scheduling. Some compilers just do this prefetch | |
| 116 * automatically. Some actually end up with worse performance if you | |
| 117 * force the prefetch. Solaris gcc seems to do better, but cc does worse. | |
| 118 */ | |
| 119 #undef PREFETCH_OPCCODE | |
| 120 #define PREFETCH_OPCCODE | |
| 121 | |
| 122 /* | |
| 123 Interpreter safepoint: it is expected that the interpreter will have no live | |
| 124 handles of its own creation live at an interpreter safepoint. Therefore we | |
| 125 run a HandleMarkCleaner and trash all handles allocated in the call chain | |
| 126 since the JavaCalls::call_helper invocation that initiated the chain. | |
| 127 There really shouldn't be any handles remaining to trash but this is cheap | |
| 128 in relation to a safepoint. | |
| 129 */ | |
| 130 #define SAFEPOINT \ | |
| 131 if ( SafepointSynchronize::is_synchronizing()) { \ | |
| 132 { \ | |
| 133 /* zap freed handles rather than GC'ing them */ \ | |
| 134 HandleMarkCleaner __hmc(THREAD); \ | |
| 135 } \ | |
| 136 CALL_VM(SafepointSynchronize::block(THREAD), handle_exception); \ | |
| 137 } | |
| 138 | |
| 139 /* | |
| 140 * VM_JAVA_ERROR - Macro for throwing a java exception from | |
| 141 * the interpreter loop. Should really be a CALL_VM but there | |
| 142 * is no entry point to do the transition to vm so we just | |
| 143 * do it by hand here. | |
| 144 */ | |
| 145 #define VM_JAVA_ERROR_NO_JUMP(name, msg) \ | |
| 146 DECACHE_STATE(); \ | |
| 147 SET_LAST_JAVA_FRAME(); \ | |
| 148 { \ | |
| 149 ThreadInVMfromJava trans(THREAD); \ | |
| 150 Exceptions::_throw_msg(THREAD, __FILE__, __LINE__, name, msg); \ | |
| 151 } \ | |
| 152 RESET_LAST_JAVA_FRAME(); \ | |
| 153 CACHE_STATE(); | |
| 154 | |
| 155 // Normal throw of a java error | |
| 156 #define VM_JAVA_ERROR(name, msg) \ | |
| 157 VM_JAVA_ERROR_NO_JUMP(name, msg) \ | |
| 158 goto handle_exception; | |
| 159 | |
| 160 #ifdef PRODUCT | |
| 161 #define DO_UPDATE_INSTRUCTION_COUNT(opcode) | |
| 162 #else | |
| 163 #define DO_UPDATE_INSTRUCTION_COUNT(opcode) \ | |
| 164 { \ | |
| 165 BytecodeCounter::_counter_value++; \ | |
| 166 BytecodeHistogram::_counters[(Bytecodes::Code)opcode]++; \ | |
| 167 if (StopInterpreterAt && StopInterpreterAt == BytecodeCounter::_counter_value) os::breakpoint(); \ | |
| 168 if (TraceBytecodes) { \ | |
| 169 CALL_VM((void)SharedRuntime::trace_bytecode(THREAD, 0, \ | |
| 170 topOfStack[Interpreter::expr_index_at(1)], \ | |
| 171 topOfStack[Interpreter::expr_index_at(2)]), \ | |
| 172 handle_exception); \ | |
| 173 } \ | |
| 174 } | |
| 175 #endif | |
| 176 | |
| 177 #undef DEBUGGER_SINGLE_STEP_NOTIFY | |
| 178 #ifdef VM_JVMTI | |
| 179 /* NOTE: (kbr) This macro must be called AFTER the PC has been | |
| 180 incremented. JvmtiExport::at_single_stepping_point() may cause a | |
| 181 breakpoint opcode to get inserted at the current PC to allow the | |
| 182 debugger to coalesce single-step events. | |
| 183 | |
| 184 As a result if we call at_single_stepping_point() we refetch opcode | |
| 185 to get the current opcode. This will override any other prefetching | |
| 186 that might have occurred. | |
| 187 */ | |
| 188 #define DEBUGGER_SINGLE_STEP_NOTIFY() \ | |
| 189 { \ | |
| 190 if (_jvmti_interp_events) { \ | |
| 191 if (JvmtiExport::should_post_single_step()) { \ | |
| 192 DECACHE_STATE(); \ | |
| 193 SET_LAST_JAVA_FRAME(); \ | |
| 194 ThreadInVMfromJava trans(THREAD); \ | |
| 195 JvmtiExport::at_single_stepping_point(THREAD, \ | |
| 196 istate->method(), \ | |
| 197 pc); \ | |
| 198 RESET_LAST_JAVA_FRAME(); \ | |
| 199 CACHE_STATE(); \ | |
| 200 if (THREAD->pop_frame_pending() && \ | |
| 201 !THREAD->pop_frame_in_process()) { \ | |
| 202 goto handle_Pop_Frame; \ | |
| 203 } \ | |
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204 if (THREAD->jvmti_thread_state() && \ |
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205 THREAD->jvmti_thread_state()->is_earlyret_pending()) { \ |
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206 goto handle_Early_Return; \ |
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207 } \ |
| 0 | 208 opcode = *pc; \ |
| 209 } \ | |
| 210 } \ | |
| 211 } | |
| 212 #else | |
| 213 #define DEBUGGER_SINGLE_STEP_NOTIFY() | |
| 214 #endif | |
| 215 | |
| 216 /* | |
| 217 * CONTINUE - Macro for executing the next opcode. | |
| 218 */ | |
| 219 #undef CONTINUE | |
| 220 #ifdef USELABELS | |
| 221 // Have to do this dispatch this way in C++ because otherwise gcc complains about crossing an | |
| 222 // initialization (which is is the initialization of the table pointer...) | |
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223 #define DISPATCH(opcode) goto *(void*)dispatch_table[opcode] |
| 0 | 224 #define CONTINUE { \ |
| 225 opcode = *pc; \ | |
| 226 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
| 227 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
| 228 DISPATCH(opcode); \ | |
| 229 } | |
| 230 #else | |
| 231 #ifdef PREFETCH_OPCCODE | |
| 232 #define CONTINUE { \ | |
| 233 opcode = *pc; \ | |
| 234 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
| 235 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
| 236 continue; \ | |
| 237 } | |
| 238 #else | |
| 239 #define CONTINUE { \ | |
| 240 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
| 241 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
| 242 continue; \ | |
| 243 } | |
| 244 #endif | |
| 245 #endif | |
| 246 | |
| 247 | |
| 248 #define UPDATE_PC(opsize) {pc += opsize; } | |
| 249 /* | |
| 250 * UPDATE_PC_AND_TOS - Macro for updating the pc and topOfStack. | |
| 251 */ | |
| 252 #undef UPDATE_PC_AND_TOS | |
| 253 #define UPDATE_PC_AND_TOS(opsize, stack) \ | |
| 254 {pc += opsize; MORE_STACK(stack); } | |
| 255 | |
| 256 /* | |
| 257 * UPDATE_PC_AND_TOS_AND_CONTINUE - Macro for updating the pc and topOfStack, | |
| 258 * and executing the next opcode. It's somewhat similar to the combination | |
| 259 * of UPDATE_PC_AND_TOS and CONTINUE, but with some minor optimizations. | |
| 260 */ | |
| 261 #undef UPDATE_PC_AND_TOS_AND_CONTINUE | |
| 262 #ifdef USELABELS | |
| 263 #define UPDATE_PC_AND_TOS_AND_CONTINUE(opsize, stack) { \ | |
| 264 pc += opsize; opcode = *pc; MORE_STACK(stack); \ | |
| 265 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
| 266 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
| 267 DISPATCH(opcode); \ | |
| 268 } | |
| 269 | |
| 270 #define UPDATE_PC_AND_CONTINUE(opsize) { \ | |
| 271 pc += opsize; opcode = *pc; \ | |
| 272 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
| 273 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
| 274 DISPATCH(opcode); \ | |
| 275 } | |
| 276 #else | |
| 277 #ifdef PREFETCH_OPCCODE | |
| 278 #define UPDATE_PC_AND_TOS_AND_CONTINUE(opsize, stack) { \ | |
| 279 pc += opsize; opcode = *pc; MORE_STACK(stack); \ | |
| 280 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
| 281 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
| 282 goto do_continue; \ | |
| 283 } | |
| 284 | |
| 285 #define UPDATE_PC_AND_CONTINUE(opsize) { \ | |
| 286 pc += opsize; opcode = *pc; \ | |
| 287 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
| 288 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
| 289 goto do_continue; \ | |
| 290 } | |
| 291 #else | |
| 292 #define UPDATE_PC_AND_TOS_AND_CONTINUE(opsize, stack) { \ | |
| 293 pc += opsize; MORE_STACK(stack); \ | |
| 294 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
| 295 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
| 296 goto do_continue; \ | |
| 297 } | |
| 298 | |
| 299 #define UPDATE_PC_AND_CONTINUE(opsize) { \ | |
| 300 pc += opsize; \ | |
| 301 DO_UPDATE_INSTRUCTION_COUNT(opcode); \ | |
| 302 DEBUGGER_SINGLE_STEP_NOTIFY(); \ | |
| 303 goto do_continue; \ | |
| 304 } | |
| 305 #endif /* PREFETCH_OPCCODE */ | |
| 306 #endif /* USELABELS */ | |
| 307 | |
| 308 // About to call a new method, update the save the adjusted pc and return to frame manager | |
| 309 #define UPDATE_PC_AND_RETURN(opsize) \ | |
| 310 DECACHE_TOS(); \ | |
| 311 istate->set_bcp(pc+opsize); \ | |
| 312 return; | |
| 313 | |
| 314 | |
| 315 #define METHOD istate->method() | |
| 10233 | 316 #define GET_METHOD_COUNTERS(res) \ |
| 317 res = METHOD->method_counters(); \ | |
| 318 if (res == NULL) { \ | |
| 319 CALL_VM(res = InterpreterRuntime::build_method_counters(THREAD, METHOD), handle_exception); \ | |
| 320 } | |
| 321 | |
| 0 | 322 #define OSR_REQUEST(res, branch_pc) \ |
| 323 CALL_VM(res=InterpreterRuntime::frequency_counter_overflow(THREAD, branch_pc), handle_exception); | |
| 324 /* | |
| 325 * For those opcodes that need to have a GC point on a backwards branch | |
| 326 */ | |
| 327 | |
| 328 // Backedge counting is kind of strange. The asm interpreter will increment | |
| 329 // the backedge counter as a separate counter but it does it's comparisons | |
| 330 // to the sum (scaled) of invocation counter and backedge count to make | |
| 331 // a decision. Seems kind of odd to sum them together like that | |
| 332 | |
| 333 // skip is delta from current bcp/bci for target, branch_pc is pre-branch bcp | |
| 334 | |
| 335 | |
| 336 #define DO_BACKEDGE_CHECKS(skip, branch_pc) \ | |
| 337 if ((skip) <= 0) { \ | |
| 10233 | 338 MethodCounters* mcs; \ |
| 339 GET_METHOD_COUNTERS(mcs); \ | |
| 1078 | 340 if (UseLoopCounter) { \ |
| 0 | 341 bool do_OSR = UseOnStackReplacement; \ |
| 10233 | 342 mcs->backedge_counter()->increment(); \ |
| 343 if (do_OSR) do_OSR = mcs->backedge_counter()->reached_InvocationLimit(); \ | |
| 0 | 344 if (do_OSR) { \ |
| 345 nmethod* osr_nmethod; \ | |
| 346 OSR_REQUEST(osr_nmethod, branch_pc); \ | |
| 347 if (osr_nmethod != NULL && osr_nmethod->osr_entry_bci() != InvalidOSREntryBci) { \ | |
| 1078 | 348 intptr_t* buf = SharedRuntime::OSR_migration_begin(THREAD); \ |
| 0 | 349 istate->set_msg(do_osr); \ |
| 350 istate->set_osr_buf((address)buf); \ | |
| 351 istate->set_osr_entry(osr_nmethod->osr_entry()); \ | |
| 352 return; \ | |
| 353 } \ | |
| 354 } \ | |
| 355 } /* UseCompiler ... */ \ | |
| 10233 | 356 mcs->invocation_counter()->increment(); \ |
| 0 | 357 SAFEPOINT; \ |
| 358 } | |
| 359 | |
| 360 /* | |
| 361 * For those opcodes that need to have a GC point on a backwards branch | |
| 362 */ | |
| 363 | |
| 364 /* | |
| 365 * Macros for caching and flushing the interpreter state. Some local | |
| 366 * variables need to be flushed out to the frame before we do certain | |
| 367 * things (like pushing frames or becomming gc safe) and some need to | |
| 368 * be recached later (like after popping a frame). We could use one | |
| 369 * macro to cache or decache everything, but this would be less then | |
| 370 * optimal because we don't always need to cache or decache everything | |
| 371 * because some things we know are already cached or decached. | |
| 372 */ | |
| 373 #undef DECACHE_TOS | |
| 374 #undef CACHE_TOS | |
| 375 #undef CACHE_PREV_TOS | |
| 376 #define DECACHE_TOS() istate->set_stack(topOfStack); | |
| 377 | |
| 378 #define CACHE_TOS() topOfStack = (intptr_t *)istate->stack(); | |
| 379 | |
| 380 #undef DECACHE_PC | |
| 381 #undef CACHE_PC | |
| 382 #define DECACHE_PC() istate->set_bcp(pc); | |
| 383 #define CACHE_PC() pc = istate->bcp(); | |
| 384 #define CACHE_CP() cp = istate->constants(); | |
| 385 #define CACHE_LOCALS() locals = istate->locals(); | |
| 386 #undef CACHE_FRAME | |
| 387 #define CACHE_FRAME() | |
| 388 | |
| 389 /* | |
| 390 * CHECK_NULL - Macro for throwing a NullPointerException if the object | |
| 391 * passed is a null ref. | |
| 392 * On some architectures/platforms it should be possible to do this implicitly | |
| 393 */ | |
| 394 #undef CHECK_NULL | |
| 395 #define CHECK_NULL(obj_) \ | |
|
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396 if ((obj_) == NULL) { \ |
| 0 | 397 VM_JAVA_ERROR(vmSymbols::java_lang_NullPointerException(), ""); \ |
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398 } \ |
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399 VERIFY_OOP(obj_) |
| 0 | 400 |
| 401 #define VMdoubleConstZero() 0.0 | |
| 402 #define VMdoubleConstOne() 1.0 | |
| 403 #define VMlongConstZero() (max_jlong-max_jlong) | |
| 404 #define VMlongConstOne() ((max_jlong-max_jlong)+1) | |
| 405 | |
| 406 /* | |
| 407 * Alignment | |
| 408 */ | |
| 409 #define VMalignWordUp(val) (((uintptr_t)(val) + 3) & ~3) | |
| 410 | |
| 411 // Decache the interpreter state that interpreter modifies directly (i.e. GC is indirect mod) | |
| 412 #define DECACHE_STATE() DECACHE_PC(); DECACHE_TOS(); | |
| 413 | |
| 414 // Reload interpreter state after calling the VM or a possible GC | |
| 415 #define CACHE_STATE() \ | |
| 416 CACHE_TOS(); \ | |
| 417 CACHE_PC(); \ | |
| 418 CACHE_CP(); \ | |
| 419 CACHE_LOCALS(); | |
| 420 | |
| 421 // Call the VM don't check for pending exceptions | |
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422 #define CALL_VM_NOCHECK(func) \ |
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423 DECACHE_STATE(); \ |
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424 SET_LAST_JAVA_FRAME(); \ |
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425 func; \ |
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426 RESET_LAST_JAVA_FRAME(); \ |
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427 CACHE_STATE(); \ |
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428 if (THREAD->pop_frame_pending() && \ |
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429 !THREAD->pop_frame_in_process()) { \ |
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430 goto handle_Pop_Frame; \ |
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431 } \ |
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432 if (THREAD->jvmti_thread_state() && \ |
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433 THREAD->jvmti_thread_state()->is_earlyret_pending()) { \ |
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434 goto handle_Early_Return; \ |
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435 } |
| 0 | 436 |
| 437 // Call the VM and check for pending exceptions | |
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438 #define CALL_VM(func, label) { \ |
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439 CALL_VM_NOCHECK(func); \ |
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440 if (THREAD->has_pending_exception()) goto label; \ |
| 0 | 441 } |
| 442 | |
| 443 /* | |
| 444 * BytecodeInterpreter::run(interpreterState istate) | |
| 445 * BytecodeInterpreter::runWithChecks(interpreterState istate) | |
| 446 * | |
| 447 * The real deal. This is where byte codes actually get interpreted. | |
| 448 * Basically it's a big while loop that iterates until we return from | |
| 449 * the method passed in. | |
| 450 * | |
| 451 * The runWithChecks is used if JVMTI is enabled. | |
| 452 * | |
| 453 */ | |
| 454 #if defined(VM_JVMTI) | |
| 455 void | |
| 456 BytecodeInterpreter::runWithChecks(interpreterState istate) { | |
| 457 #else | |
| 458 void | |
| 459 BytecodeInterpreter::run(interpreterState istate) { | |
| 460 #endif | |
| 461 | |
| 462 // In order to simplify some tests based on switches set at runtime | |
| 463 // we invoke the interpreter a single time after switches are enabled | |
| 464 // and set simpler to to test variables rather than method calls or complex | |
| 465 // boolean expressions. | |
| 466 | |
| 467 static int initialized = 0; | |
| 468 static int checkit = 0; | |
| 469 static intptr_t* c_addr = NULL; | |
| 470 static intptr_t c_value; | |
| 471 | |
| 472 if (checkit && *c_addr != c_value) { | |
| 473 os::breakpoint(); | |
| 474 } | |
| 475 #ifdef VM_JVMTI | |
| 476 static bool _jvmti_interp_events = 0; | |
| 477 #endif | |
| 478 | |
| 479 static int _compiling; // (UseCompiler || CountCompiledCalls) | |
| 480 | |
| 481 #ifdef ASSERT | |
| 482 if (istate->_msg != initialize) { | |
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483 // We have a problem here if we are running with a pre-hsx24 JDK (for example during bootstrap) |
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484 // because in that case, EnableInvokeDynamic is true by default but will be later switched off |
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485 // if java_lang_invoke_MethodHandle::compute_offsets() detects that the JDK only has the classes |
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486 // for the old JSR292 implementation. |
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487 // This leads to a situation where 'istate->_stack_limit' always accounts for |
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488 // methodOopDesc::extra_stack_entries() because it is computed in |
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489 // CppInterpreterGenerator::generate_compute_interpreter_state() which was generated while |
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490 // EnableInvokeDynamic was still true. On the other hand, istate->_method->max_stack() doesn't |
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491 // account for extra_stack_entries() anymore because at the time when it is called |
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492 // EnableInvokeDynamic was already set to false. |
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493 // So we have a second version of the assertion which handles the case where EnableInvokeDynamic was |
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494 // switched off because of the wrong classes. |
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495 if (EnableInvokeDynamic || FLAG_IS_CMDLINE(EnableInvokeDynamic)) { |
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496 assert(labs(istate->_stack_base - istate->_stack_limit) == (istate->_method->max_stack() + 1), "bad stack limit"); |
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497 } else { |
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498 const int extra_stack_entries = Method::extra_stack_entries_for_jsr292; |
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499 assert(labs(istate->_stack_base - istate->_stack_limit) == (istate->_method->max_stack() + extra_stack_entries |
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500 + 1), "bad stack limit"); |
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501 } |
| 1729 | 502 #ifndef SHARK |
| 503 IA32_ONLY(assert(istate->_stack_limit == istate->_thread->last_Java_sp() + 1, "wrong")); | |
| 504 #endif // !SHARK | |
| 0 | 505 } |
| 506 // Verify linkages. | |
| 507 interpreterState l = istate; | |
| 508 do { | |
| 509 assert(l == l->_self_link, "bad link"); | |
| 510 l = l->_prev_link; | |
| 511 } while (l != NULL); | |
| 512 // Screwups with stack management usually cause us to overwrite istate | |
| 513 // save a copy so we can verify it. | |
| 514 interpreterState orig = istate; | |
| 515 #endif | |
| 516 | |
| 517 register intptr_t* topOfStack = (intptr_t *)istate->stack(); /* access with STACK macros */ | |
| 518 register address pc = istate->bcp(); | |
| 519 register jubyte opcode; | |
| 520 register intptr_t* locals = istate->locals(); | |
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521 register ConstantPoolCache* cp = istate->constants(); // method()->constants()->cache() |
| 0 | 522 #ifdef LOTS_OF_REGS |
| 523 register JavaThread* THREAD = istate->thread(); | |
| 524 #else | |
| 525 #undef THREAD | |
| 526 #define THREAD istate->thread() | |
| 527 #endif | |
| 528 | |
| 529 #ifdef USELABELS | |
| 530 const static void* const opclabels_data[256] = { | |
| 531 /* 0x00 */ &&opc_nop, &&opc_aconst_null,&&opc_iconst_m1,&&opc_iconst_0, | |
| 532 /* 0x04 */ &&opc_iconst_1,&&opc_iconst_2, &&opc_iconst_3, &&opc_iconst_4, | |
| 533 /* 0x08 */ &&opc_iconst_5,&&opc_lconst_0, &&opc_lconst_1, &&opc_fconst_0, | |
| 534 /* 0x0C */ &&opc_fconst_1,&&opc_fconst_2, &&opc_dconst_0, &&opc_dconst_1, | |
| 535 | |
| 536 /* 0x10 */ &&opc_bipush, &&opc_sipush, &&opc_ldc, &&opc_ldc_w, | |
| 537 /* 0x14 */ &&opc_ldc2_w, &&opc_iload, &&opc_lload, &&opc_fload, | |
| 538 /* 0x18 */ &&opc_dload, &&opc_aload, &&opc_iload_0,&&opc_iload_1, | |
| 539 /* 0x1C */ &&opc_iload_2,&&opc_iload_3,&&opc_lload_0,&&opc_lload_1, | |
| 540 | |
| 541 /* 0x20 */ &&opc_lload_2,&&opc_lload_3,&&opc_fload_0,&&opc_fload_1, | |
| 542 /* 0x24 */ &&opc_fload_2,&&opc_fload_3,&&opc_dload_0,&&opc_dload_1, | |
| 543 /* 0x28 */ &&opc_dload_2,&&opc_dload_3,&&opc_aload_0,&&opc_aload_1, | |
| 544 /* 0x2C */ &&opc_aload_2,&&opc_aload_3,&&opc_iaload, &&opc_laload, | |
| 545 | |
| 546 /* 0x30 */ &&opc_faload, &&opc_daload, &&opc_aaload, &&opc_baload, | |
| 547 /* 0x34 */ &&opc_caload, &&opc_saload, &&opc_istore, &&opc_lstore, | |
| 548 /* 0x38 */ &&opc_fstore, &&opc_dstore, &&opc_astore, &&opc_istore_0, | |
| 549 /* 0x3C */ &&opc_istore_1,&&opc_istore_2,&&opc_istore_3,&&opc_lstore_0, | |
| 550 | |
| 551 /* 0x40 */ &&opc_lstore_1,&&opc_lstore_2,&&opc_lstore_3,&&opc_fstore_0, | |
| 552 /* 0x44 */ &&opc_fstore_1,&&opc_fstore_2,&&opc_fstore_3,&&opc_dstore_0, | |
| 553 /* 0x48 */ &&opc_dstore_1,&&opc_dstore_2,&&opc_dstore_3,&&opc_astore_0, | |
| 554 /* 0x4C */ &&opc_astore_1,&&opc_astore_2,&&opc_astore_3,&&opc_iastore, | |
| 555 | |
| 556 /* 0x50 */ &&opc_lastore,&&opc_fastore,&&opc_dastore,&&opc_aastore, | |
| 557 /* 0x54 */ &&opc_bastore,&&opc_castore,&&opc_sastore,&&opc_pop, | |
| 558 /* 0x58 */ &&opc_pop2, &&opc_dup, &&opc_dup_x1, &&opc_dup_x2, | |
| 559 /* 0x5C */ &&opc_dup2, &&opc_dup2_x1,&&opc_dup2_x2,&&opc_swap, | |
| 560 | |
| 561 /* 0x60 */ &&opc_iadd,&&opc_ladd,&&opc_fadd,&&opc_dadd, | |
| 562 /* 0x64 */ &&opc_isub,&&opc_lsub,&&opc_fsub,&&opc_dsub, | |
| 563 /* 0x68 */ &&opc_imul,&&opc_lmul,&&opc_fmul,&&opc_dmul, | |
| 564 /* 0x6C */ &&opc_idiv,&&opc_ldiv,&&opc_fdiv,&&opc_ddiv, | |
| 565 | |
| 566 /* 0x70 */ &&opc_irem, &&opc_lrem, &&opc_frem,&&opc_drem, | |
| 567 /* 0x74 */ &&opc_ineg, &&opc_lneg, &&opc_fneg,&&opc_dneg, | |
| 568 /* 0x78 */ &&opc_ishl, &&opc_lshl, &&opc_ishr,&&opc_lshr, | |
| 569 /* 0x7C */ &&opc_iushr,&&opc_lushr,&&opc_iand,&&opc_land, | |
| 570 | |
| 571 /* 0x80 */ &&opc_ior, &&opc_lor,&&opc_ixor,&&opc_lxor, | |
| 572 /* 0x84 */ &&opc_iinc,&&opc_i2l,&&opc_i2f, &&opc_i2d, | |
| 573 /* 0x88 */ &&opc_l2i, &&opc_l2f,&&opc_l2d, &&opc_f2i, | |
| 574 /* 0x8C */ &&opc_f2l, &&opc_f2d,&&opc_d2i, &&opc_d2l, | |
| 575 | |
| 576 /* 0x90 */ &&opc_d2f, &&opc_i2b, &&opc_i2c, &&opc_i2s, | |
| 577 /* 0x94 */ &&opc_lcmp, &&opc_fcmpl,&&opc_fcmpg,&&opc_dcmpl, | |
| 578 /* 0x98 */ &&opc_dcmpg,&&opc_ifeq, &&opc_ifne, &&opc_iflt, | |
| 579 /* 0x9C */ &&opc_ifge, &&opc_ifgt, &&opc_ifle, &&opc_if_icmpeq, | |
| 580 | |
| 581 /* 0xA0 */ &&opc_if_icmpne,&&opc_if_icmplt,&&opc_if_icmpge, &&opc_if_icmpgt, | |
| 582 /* 0xA4 */ &&opc_if_icmple,&&opc_if_acmpeq,&&opc_if_acmpne, &&opc_goto, | |
| 583 /* 0xA8 */ &&opc_jsr, &&opc_ret, &&opc_tableswitch,&&opc_lookupswitch, | |
| 584 /* 0xAC */ &&opc_ireturn, &&opc_lreturn, &&opc_freturn, &&opc_dreturn, | |
| 585 | |
| 586 /* 0xB0 */ &&opc_areturn, &&opc_return, &&opc_getstatic, &&opc_putstatic, | |
| 587 /* 0xB4 */ &&opc_getfield, &&opc_putfield, &&opc_invokevirtual,&&opc_invokespecial, | |
| 2480 | 588 /* 0xB8 */ &&opc_invokestatic,&&opc_invokeinterface,&&opc_invokedynamic,&&opc_new, |
| 0 | 589 /* 0xBC */ &&opc_newarray, &&opc_anewarray, &&opc_arraylength, &&opc_athrow, |
| 590 | |
| 591 /* 0xC0 */ &&opc_checkcast, &&opc_instanceof, &&opc_monitorenter, &&opc_monitorexit, | |
| 592 /* 0xC4 */ &&opc_wide, &&opc_multianewarray, &&opc_ifnull, &&opc_ifnonnull, | |
| 123 | 593 /* 0xC8 */ &&opc_goto_w, &&opc_jsr_w, &&opc_breakpoint, &&opc_default, |
| 594 /* 0xCC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
| 595 | |
| 596 /* 0xD0 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
| 0 | 597 /* 0xD4 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, |
| 598 /* 0xD8 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
| 599 /* 0xDC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
| 600 | |
| 601 /* 0xE0 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
| 2480 | 602 /* 0xE4 */ &&opc_default, &&opc_fast_aldc, &&opc_fast_aldc_w, &&opc_return_register_finalizer, |
| 6926 | 603 /* 0xE8 */ &&opc_invokehandle,&&opc_default, &&opc_default, &&opc_default, |
| 0 | 604 /* 0xEC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, |
| 605 | |
| 606 /* 0xF0 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
| 607 /* 0xF4 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
| 608 /* 0xF8 */ &&opc_default, &&opc_default, &&opc_default, &&opc_default, | |
| 609 /* 0xFC */ &&opc_default, &&opc_default, &&opc_default, &&opc_default | |
| 610 }; | |
| 611 register uintptr_t *dispatch_table = (uintptr_t*)&opclabels_data[0]; | |
| 612 #endif /* USELABELS */ | |
| 613 | |
| 614 #ifdef ASSERT | |
| 615 // this will trigger a VERIFY_OOP on entry | |
| 616 if (istate->msg() != initialize && ! METHOD->is_static()) { | |
| 617 oop rcvr = LOCALS_OBJECT(0); | |
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618 VERIFY_OOP(rcvr); |
| 0 | 619 } |
| 620 #endif | |
| 621 // #define HACK | |
| 622 #ifdef HACK | |
| 623 bool interesting = false; | |
| 624 #endif // HACK | |
| 625 | |
| 626 /* QQQ this should be a stack method so we don't know actual direction */ | |
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627 guarantee(istate->msg() == initialize || |
| 0 | 628 topOfStack >= istate->stack_limit() && |
| 629 topOfStack < istate->stack_base(), | |
| 630 "Stack top out of range"); | |
| 631 | |
| 632 switch (istate->msg()) { | |
| 633 case initialize: { | |
| 634 if (initialized++) ShouldNotReachHere(); // Only one initialize call | |
| 635 _compiling = (UseCompiler || CountCompiledCalls); | |
| 636 #ifdef VM_JVMTI | |
| 637 _jvmti_interp_events = JvmtiExport::can_post_interpreter_events(); | |
| 638 #endif | |
| 639 return; | |
| 640 } | |
| 641 break; | |
| 642 case method_entry: { | |
| 643 THREAD->set_do_not_unlock(); | |
| 644 // count invocations | |
| 645 assert(initialized, "Interpreter not initialized"); | |
| 646 if (_compiling) { | |
| 10233 | 647 MethodCounters* mcs; |
| 648 GET_METHOD_COUNTERS(mcs); | |
| 0 | 649 if (ProfileInterpreter) { |
| 10233 | 650 METHOD->increment_interpreter_invocation_count(THREAD); |
| 0 | 651 } |
| 10233 | 652 mcs->invocation_counter()->increment(); |
| 653 if (mcs->invocation_counter()->reached_InvocationLimit()) { | |
| 0 | 654 CALL_VM((void)InterpreterRuntime::frequency_counter_overflow(THREAD, NULL), handle_exception); |
| 655 | |
| 656 // We no longer retry on a counter overflow | |
| 657 | |
| 658 // istate->set_msg(retry_method); | |
| 659 // THREAD->clr_do_not_unlock(); | |
| 660 // return; | |
| 661 } | |
| 662 SAFEPOINT; | |
| 663 } | |
| 664 | |
| 665 if ((istate->_stack_base - istate->_stack_limit) != istate->method()->max_stack() + 1) { | |
| 666 // initialize | |
| 667 os::breakpoint(); | |
| 668 } | |
| 669 | |
| 670 #ifdef HACK | |
| 671 { | |
| 672 ResourceMark rm; | |
| 673 char *method_name = istate->method()->name_and_sig_as_C_string(); | |
| 674 if (strstr(method_name, "runThese$TestRunner.run()V") != NULL) { | |
| 675 tty->print_cr("entering: depth %d bci: %d", | |
| 676 (istate->_stack_base - istate->_stack), | |
| 677 istate->_bcp - istate->_method->code_base()); | |
| 678 interesting = true; | |
| 679 } | |
| 680 } | |
| 681 #endif // HACK | |
| 682 | |
| 683 | |
| 684 // lock method if synchronized | |
| 685 if (METHOD->is_synchronized()) { | |
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686 // oop rcvr = locals[0].j.r; |
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687 oop rcvr; |
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688 if (METHOD->is_static()) { |
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689 rcvr = METHOD->constants()->pool_holder()->java_mirror(); |
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690 } else { |
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691 rcvr = LOCALS_OBJECT(0); |
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692 VERIFY_OOP(rcvr); |
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693 } |
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694 // The initial monitor is ours for the taking |
|
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695 // Monitor not filled in frame manager any longer as this caused race condition with biased locking. |
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696 BasicObjectLock* mon = &istate->monitor_base()[-1]; |
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697 mon->set_obj(rcvr); |
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698 bool success = false; |
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699 uintptr_t epoch_mask_in_place = (uintptr_t)markOopDesc::epoch_mask_in_place; |
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700 markOop mark = rcvr->mark(); |
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701 intptr_t hash = (intptr_t) markOopDesc::no_hash; |
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702 // Implies UseBiasedLocking. |
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703 if (mark->has_bias_pattern()) { |
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704 uintptr_t thread_ident; |
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705 uintptr_t anticipated_bias_locking_value; |
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706 thread_ident = (uintptr_t)istate->thread(); |
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707 anticipated_bias_locking_value = |
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708 (((uintptr_t)rcvr->klass()->prototype_header() | thread_ident) ^ (uintptr_t)mark) & |
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709 ~((uintptr_t) markOopDesc::age_mask_in_place); |
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710 |
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711 if (anticipated_bias_locking_value == 0) { |
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712 // Already biased towards this thread, nothing to do. |
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713 if (PrintBiasedLockingStatistics) { |
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714 (* BiasedLocking::biased_lock_entry_count_addr())++; |
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715 } |
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716 success = true; |
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717 } else if ((anticipated_bias_locking_value & markOopDesc::biased_lock_mask_in_place) != 0) { |
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718 // Try to revoke bias. |
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719 markOop header = rcvr->klass()->prototype_header(); |
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720 if (hash != markOopDesc::no_hash) { |
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721 header = header->copy_set_hash(hash); |
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722 } |
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723 if (Atomic::cmpxchg_ptr(header, rcvr->mark_addr(), mark) == mark) { |
|
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724 if (PrintBiasedLockingStatistics) |
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725 (*BiasedLocking::revoked_lock_entry_count_addr())++; |
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726 } |
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727 } else if ((anticipated_bias_locking_value & epoch_mask_in_place) != 0) { |
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728 // Try to rebias. |
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729 markOop new_header = (markOop) ( (intptr_t) rcvr->klass()->prototype_header() | thread_ident); |
|
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730 if (hash != markOopDesc::no_hash) { |
|
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731 new_header = new_header->copy_set_hash(hash); |
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732 } |
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733 if (Atomic::cmpxchg_ptr((void*)new_header, rcvr->mark_addr(), mark) == mark) { |
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734 if (PrintBiasedLockingStatistics) { |
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735 (* BiasedLocking::rebiased_lock_entry_count_addr())++; |
| 0 | 736 } |
| 737 } else { | |
|
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738 CALL_VM(InterpreterRuntime::monitorenter(THREAD, mon), handle_exception); |
|
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739 } |
|
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740 success = true; |
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741 } else { |
|
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742 // Try to bias towards thread in case object is anonymously biased. |
|
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743 markOop header = (markOop) ((uintptr_t) mark & |
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744 ((uintptr_t)markOopDesc::biased_lock_mask_in_place | |
|
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745 (uintptr_t)markOopDesc::age_mask_in_place | epoch_mask_in_place)); |
|
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746 if (hash != markOopDesc::no_hash) { |
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747 header = header->copy_set_hash(hash); |
|
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748 } |
|
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749 markOop new_header = (markOop) ((uintptr_t) header | thread_ident); |
|
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|
750 // Debugging hint. |
|
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|
751 DEBUG_ONLY(mon->lock()->set_displaced_header((markOop) (uintptr_t) 0xdeaddead);) |
|
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752 if (Atomic::cmpxchg_ptr((void*)new_header, rcvr->mark_addr(), header) == header) { |
|
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753 if (PrintBiasedLockingStatistics) { |
|
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|
754 (* BiasedLocking::anonymously_biased_lock_entry_count_addr())++; |
|
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|
755 } |
|
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|
756 } else { |
|
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|
757 CALL_VM(InterpreterRuntime::monitorenter(THREAD, mon), handle_exception); |
|
48d3d0eb193b
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|
758 } |
|
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|
759 success = true; |
|
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|
760 } |
|
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|
761 } |
|
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8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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|
762 |
|
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|
763 // Traditional lightweight locking. |
|
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|
764 if (!success) { |
|
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|
765 markOop displaced = rcvr->mark()->set_unlocked(); |
|
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|
766 mon->lock()->set_displaced_header(displaced); |
|
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|
767 bool call_vm = UseHeavyMonitors; |
|
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|
768 if (call_vm || Atomic::cmpxchg_ptr(mon, rcvr->mark_addr(), displaced) != displaced) { |
|
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|
769 // Is it simple recursive case? |
|
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770 if (!call_vm && THREAD->is_lock_owned((address) displaced->clear_lock_bits())) { |
|
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|
771 mon->lock()->set_displaced_header(NULL); |
|
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|
772 } else { |
|
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|
773 CALL_VM(InterpreterRuntime::monitorenter(THREAD, mon), handle_exception); |
| 0 | 774 } |
| 775 } | |
|
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|
776 } |
| 0 | 777 } |
| 778 THREAD->clr_do_not_unlock(); | |
| 779 | |
| 780 // Notify jvmti | |
| 781 #ifdef VM_JVMTI | |
| 782 if (_jvmti_interp_events) { | |
| 783 // Whenever JVMTI puts a thread in interp_only_mode, method | |
| 784 // entry/exit events are sent for that thread to track stack depth. | |
| 785 if (THREAD->is_interp_only_mode()) { | |
| 786 CALL_VM(InterpreterRuntime::post_method_entry(THREAD), | |
| 787 handle_exception); | |
| 788 } | |
| 789 } | |
| 790 #endif /* VM_JVMTI */ | |
| 791 | |
| 792 goto run; | |
| 793 } | |
| 794 | |
| 795 case popping_frame: { | |
| 796 // returned from a java call to pop the frame, restart the call | |
| 797 // clear the message so we don't confuse ourselves later | |
| 798 assert(THREAD->pop_frame_in_process(), "wrong frame pop state"); | |
| 799 istate->set_msg(no_request); | |
| 800 THREAD->clr_pop_frame_in_process(); | |
| 801 goto run; | |
| 802 } | |
| 803 | |
| 804 case method_resume: { | |
| 805 if ((istate->_stack_base - istate->_stack_limit) != istate->method()->max_stack() + 1) { | |
| 806 // resume | |
| 807 os::breakpoint(); | |
| 808 } | |
| 809 #ifdef HACK | |
| 810 { | |
| 811 ResourceMark rm; | |
| 812 char *method_name = istate->method()->name_and_sig_as_C_string(); | |
| 813 if (strstr(method_name, "runThese$TestRunner.run()V") != NULL) { | |
| 814 tty->print_cr("resume: depth %d bci: %d", | |
| 815 (istate->_stack_base - istate->_stack) , | |
| 816 istate->_bcp - istate->_method->code_base()); | |
| 817 interesting = true; | |
| 818 } | |
| 819 } | |
| 820 #endif // HACK | |
| 821 // returned from a java call, continue executing. | |
| 822 if (THREAD->pop_frame_pending() && !THREAD->pop_frame_in_process()) { | |
| 823 goto handle_Pop_Frame; | |
| 824 } | |
|
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|
825 if (THREAD->jvmti_thread_state() && |
|
bfd9d884693d
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|
826 THREAD->jvmti_thread_state()->is_earlyret_pending()) { |
|
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|
827 goto handle_Early_Return; |
|
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|
828 } |
| 0 | 829 |
| 830 if (THREAD->has_pending_exception()) goto handle_exception; | |
| 831 // Update the pc by the saved amount of the invoke bytecode size | |
| 832 UPDATE_PC(istate->bcp_advance()); | |
| 833 goto run; | |
| 834 } | |
| 835 | |
| 836 case deopt_resume2: { | |
| 837 // Returned from an opcode that will reexecute. Deopt was | |
| 838 // a result of a PopFrame request. | |
| 839 // | |
| 840 goto run; | |
| 841 } | |
| 842 | |
| 843 case deopt_resume: { | |
| 844 // Returned from an opcode that has completed. The stack has | |
| 845 // the result all we need to do is skip across the bytecode | |
| 846 // and continue (assuming there is no exception pending) | |
| 847 // | |
| 848 // compute continuation length | |
| 849 // | |
| 850 // Note: it is possible to deopt at a return_register_finalizer opcode | |
| 851 // because this requires entering the vm to do the registering. While the | |
| 852 // opcode is complete we can't advance because there are no more opcodes | |
| 853 // much like trying to deopt at a poll return. In that has we simply | |
| 854 // get out of here | |
| 855 // | |
| 2142 | 856 if ( Bytecodes::code_at(METHOD, pc) == Bytecodes::_return_register_finalizer) { |
| 0 | 857 // this will do the right thing even if an exception is pending. |
| 858 goto handle_return; | |
| 859 } | |
| 2142 | 860 UPDATE_PC(Bytecodes::length_at(METHOD, pc)); |
| 0 | 861 if (THREAD->has_pending_exception()) goto handle_exception; |
| 862 goto run; | |
| 863 } | |
| 864 case got_monitors: { | |
| 865 // continue locking now that we have a monitor to use | |
| 866 // we expect to find newly allocated monitor at the "top" of the monitor stack. | |
| 867 oop lockee = STACK_OBJECT(-1); | |
|
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|
868 VERIFY_OOP(lockee); |
| 0 | 869 // derefing's lockee ought to provoke implicit null check |
| 870 // find a free monitor | |
| 871 BasicObjectLock* entry = (BasicObjectLock*) istate->stack_base(); | |
| 872 assert(entry->obj() == NULL, "Frame manager didn't allocate the monitor"); | |
| 873 entry->set_obj(lockee); | |
|
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|
874 bool success = false; |
|
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|
875 uintptr_t epoch_mask_in_place = (uintptr_t)markOopDesc::epoch_mask_in_place; |
|
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|
876 |
|
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|
877 markOop mark = lockee->mark(); |
|
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878 intptr_t hash = (intptr_t) markOopDesc::no_hash; |
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879 // implies UseBiasedLocking |
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880 if (mark->has_bias_pattern()) { |
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881 uintptr_t thread_ident; |
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882 uintptr_t anticipated_bias_locking_value; |
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883 thread_ident = (uintptr_t)istate->thread(); |
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884 anticipated_bias_locking_value = |
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885 (((uintptr_t)lockee->klass()->prototype_header() | thread_ident) ^ (uintptr_t)mark) & |
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886 ~((uintptr_t) markOopDesc::age_mask_in_place); |
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887 |
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888 if (anticipated_bias_locking_value == 0) { |
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889 // already biased towards this thread, nothing to do |
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890 if (PrintBiasedLockingStatistics) { |
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891 (* BiasedLocking::biased_lock_entry_count_addr())++; |
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892 } |
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893 success = true; |
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894 } else if ((anticipated_bias_locking_value & markOopDesc::biased_lock_mask_in_place) != 0) { |
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895 // try revoke bias |
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896 markOop header = lockee->klass()->prototype_header(); |
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897 if (hash != markOopDesc::no_hash) { |
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898 header = header->copy_set_hash(hash); |
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899 } |
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900 if (Atomic::cmpxchg_ptr(header, lockee->mark_addr(), mark) == mark) { |
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901 if (PrintBiasedLockingStatistics) { |
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902 (*BiasedLocking::revoked_lock_entry_count_addr())++; |
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903 } |
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904 } |
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905 } else if ((anticipated_bias_locking_value & epoch_mask_in_place) !=0) { |
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906 // try rebias |
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907 markOop new_header = (markOop) ( (intptr_t) lockee->klass()->prototype_header() | thread_ident); |
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908 if (hash != markOopDesc::no_hash) { |
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909 new_header = new_header->copy_set_hash(hash); |
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910 } |
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911 if (Atomic::cmpxchg_ptr((void*)new_header, lockee->mark_addr(), mark) == mark) { |
|
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912 if (PrintBiasedLockingStatistics) { |
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913 (* BiasedLocking::rebiased_lock_entry_count_addr())++; |
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914 } |
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915 } else { |
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916 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception); |
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917 } |
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918 success = true; |
| 0 | 919 } else { |
|
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920 // try to bias towards thread in case object is anonymously biased |
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921 markOop header = (markOop) ((uintptr_t) mark & ((uintptr_t)markOopDesc::biased_lock_mask_in_place | |
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922 (uintptr_t)markOopDesc::age_mask_in_place | epoch_mask_in_place)); |
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923 if (hash != markOopDesc::no_hash) { |
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924 header = header->copy_set_hash(hash); |
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925 } |
|
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926 markOop new_header = (markOop) ((uintptr_t) header | thread_ident); |
|
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|
927 // debugging hint |
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928 DEBUG_ONLY(entry->lock()->set_displaced_header((markOop) (uintptr_t) 0xdeaddead);) |
|
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929 if (Atomic::cmpxchg_ptr((void*)new_header, lockee->mark_addr(), header) == header) { |
|
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930 if (PrintBiasedLockingStatistics) { |
|
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931 (* BiasedLocking::anonymously_biased_lock_entry_count_addr())++; |
|
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|
932 } |
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933 } else { |
|
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934 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception); |
|
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935 } |
|
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936 success = true; |
|
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937 } |
|
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|
938 } |
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939 |
|
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|
940 // traditional lightweight locking |
|
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941 if (!success) { |
|
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|
942 markOop displaced = lockee->mark()->set_unlocked(); |
|
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|
943 entry->lock()->set_displaced_header(displaced); |
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944 bool call_vm = UseHeavyMonitors; |
|
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945 if (call_vm || Atomic::cmpxchg_ptr(entry, lockee->mark_addr(), displaced) != displaced) { |
|
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|
946 // Is it simple recursive case? |
|
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947 if (!call_vm && THREAD->is_lock_owned((address) displaced->clear_lock_bits())) { |
|
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948 entry->lock()->set_displaced_header(NULL); |
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949 } else { |
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950 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception); |
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951 } |
| 0 | 952 } |
| 953 } | |
| 954 UPDATE_PC_AND_TOS(1, -1); | |
| 955 goto run; | |
| 956 } | |
| 957 default: { | |
| 958 fatal("Unexpected message from frame manager"); | |
| 959 } | |
| 960 } | |
| 961 | |
| 962 run: | |
| 963 | |
| 964 DO_UPDATE_INSTRUCTION_COUNT(*pc) | |
| 965 DEBUGGER_SINGLE_STEP_NOTIFY(); | |
| 966 #ifdef PREFETCH_OPCCODE | |
| 967 opcode = *pc; /* prefetch first opcode */ | |
| 968 #endif | |
| 969 | |
| 970 #ifndef USELABELS | |
| 971 while (1) | |
| 972 #endif | |
| 973 { | |
| 974 #ifndef PREFETCH_OPCCODE | |
| 975 opcode = *pc; | |
| 976 #endif | |
| 977 // Seems like this happens twice per opcode. At worst this is only | |
| 978 // need at entry to the loop. | |
| 979 // DEBUGGER_SINGLE_STEP_NOTIFY(); | |
| 980 /* Using this labels avoids double breakpoints when quickening and | |
| 981 * when returing from transition frames. | |
| 982 */ | |
| 983 opcode_switch: | |
| 984 assert(istate == orig, "Corrupted istate"); | |
| 985 /* QQQ Hmm this has knowledge of direction, ought to be a stack method */ | |
| 986 assert(topOfStack >= istate->stack_limit(), "Stack overrun"); | |
| 987 assert(topOfStack < istate->stack_base(), "Stack underrun"); | |
| 988 | |
| 989 #ifdef USELABELS | |
| 990 DISPATCH(opcode); | |
| 991 #else | |
| 992 switch (opcode) | |
| 993 #endif | |
| 994 { | |
| 995 CASE(_nop): | |
| 996 UPDATE_PC_AND_CONTINUE(1); | |
| 997 | |
| 998 /* Push miscellaneous constants onto the stack. */ | |
| 999 | |
| 1000 CASE(_aconst_null): | |
| 1001 SET_STACK_OBJECT(NULL, 0); | |
| 1002 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
| 1003 | |
| 1004 #undef OPC_CONST_n | |
| 1005 #define OPC_CONST_n(opcode, const_type, value) \ | |
| 1006 CASE(opcode): \ | |
| 1007 SET_STACK_ ## const_type(value, 0); \ | |
| 1008 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
| 1009 | |
| 1010 OPC_CONST_n(_iconst_m1, INT, -1); | |
| 1011 OPC_CONST_n(_iconst_0, INT, 0); | |
| 1012 OPC_CONST_n(_iconst_1, INT, 1); | |
| 1013 OPC_CONST_n(_iconst_2, INT, 2); | |
| 1014 OPC_CONST_n(_iconst_3, INT, 3); | |
| 1015 OPC_CONST_n(_iconst_4, INT, 4); | |
| 1016 OPC_CONST_n(_iconst_5, INT, 5); | |
| 1017 OPC_CONST_n(_fconst_0, FLOAT, 0.0); | |
| 1018 OPC_CONST_n(_fconst_1, FLOAT, 1.0); | |
| 1019 OPC_CONST_n(_fconst_2, FLOAT, 2.0); | |
| 1020 | |
| 1021 #undef OPC_CONST2_n | |
| 1022 #define OPC_CONST2_n(opcname, value, key, kind) \ | |
| 1023 CASE(_##opcname): \ | |
| 1024 { \ | |
| 1025 SET_STACK_ ## kind(VM##key##Const##value(), 1); \ | |
| 1026 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); \ | |
| 1027 } | |
| 1028 OPC_CONST2_n(dconst_0, Zero, double, DOUBLE); | |
| 1029 OPC_CONST2_n(dconst_1, One, double, DOUBLE); | |
| 1030 OPC_CONST2_n(lconst_0, Zero, long, LONG); | |
| 1031 OPC_CONST2_n(lconst_1, One, long, LONG); | |
| 1032 | |
| 1033 /* Load constant from constant pool: */ | |
| 1034 | |
| 1035 /* Push a 1-byte signed integer value onto the stack. */ | |
| 1036 CASE(_bipush): | |
| 1037 SET_STACK_INT((jbyte)(pc[1]), 0); | |
| 1038 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1); | |
| 1039 | |
| 1040 /* Push a 2-byte signed integer constant onto the stack. */ | |
| 1041 CASE(_sipush): | |
| 1042 SET_STACK_INT((int16_t)Bytes::get_Java_u2(pc + 1), 0); | |
| 1043 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 1); | |
| 1044 | |
| 1045 /* load from local variable */ | |
| 1046 | |
| 1047 CASE(_aload): | |
|
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1048 VERIFY_OOP(LOCALS_OBJECT(pc[1])); |
| 0 | 1049 SET_STACK_OBJECT(LOCALS_OBJECT(pc[1]), 0); |
| 1050 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1); | |
| 1051 | |
| 1052 CASE(_iload): | |
| 1053 CASE(_fload): | |
| 1054 SET_STACK_SLOT(LOCALS_SLOT(pc[1]), 0); | |
| 1055 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 1); | |
| 1056 | |
| 1057 CASE(_lload): | |
| 1058 SET_STACK_LONG_FROM_ADDR(LOCALS_LONG_AT(pc[1]), 1); | |
| 1059 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 2); | |
| 1060 | |
| 1061 CASE(_dload): | |
| 1062 SET_STACK_DOUBLE_FROM_ADDR(LOCALS_DOUBLE_AT(pc[1]), 1); | |
| 1063 UPDATE_PC_AND_TOS_AND_CONTINUE(2, 2); | |
| 1064 | |
| 1065 #undef OPC_LOAD_n | |
| 1066 #define OPC_LOAD_n(num) \ | |
| 1067 CASE(_aload_##num): \ | |
|
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1068 VERIFY_OOP(LOCALS_OBJECT(num)); \ |
| 0 | 1069 SET_STACK_OBJECT(LOCALS_OBJECT(num), 0); \ |
| 1070 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); \ | |
| 1071 \ | |
| 1072 CASE(_iload_##num): \ | |
| 1073 CASE(_fload_##num): \ | |
| 1074 SET_STACK_SLOT(LOCALS_SLOT(num), 0); \ | |
| 1075 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); \ | |
| 1076 \ | |
| 1077 CASE(_lload_##num): \ | |
| 1078 SET_STACK_LONG_FROM_ADDR(LOCALS_LONG_AT(num), 1); \ | |
| 1079 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); \ | |
| 1080 CASE(_dload_##num): \ | |
| 1081 SET_STACK_DOUBLE_FROM_ADDR(LOCALS_DOUBLE_AT(num), 1); \ | |
| 1082 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
| 1083 | |
| 1084 OPC_LOAD_n(0); | |
| 1085 OPC_LOAD_n(1); | |
| 1086 OPC_LOAD_n(2); | |
| 1087 OPC_LOAD_n(3); | |
| 1088 | |
| 1089 /* store to a local variable */ | |
| 1090 | |
| 1091 CASE(_astore): | |
| 1092 astore(topOfStack, -1, locals, pc[1]); | |
| 1093 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -1); | |
| 1094 | |
| 1095 CASE(_istore): | |
| 1096 CASE(_fstore): | |
| 1097 SET_LOCALS_SLOT(STACK_SLOT(-1), pc[1]); | |
| 1098 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -1); | |
| 1099 | |
| 1100 CASE(_lstore): | |
| 1101 SET_LOCALS_LONG(STACK_LONG(-1), pc[1]); | |
| 1102 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -2); | |
| 1103 | |
| 1104 CASE(_dstore): | |
| 1105 SET_LOCALS_DOUBLE(STACK_DOUBLE(-1), pc[1]); | |
| 1106 UPDATE_PC_AND_TOS_AND_CONTINUE(2, -2); | |
| 1107 | |
| 1108 CASE(_wide): { | |
| 1109 uint16_t reg = Bytes::get_Java_u2(pc + 2); | |
| 1110 | |
| 1111 opcode = pc[1]; | |
| 1112 switch(opcode) { | |
| 1113 case Bytecodes::_aload: | |
|
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1114 VERIFY_OOP(LOCALS_OBJECT(reg)); |
| 0 | 1115 SET_STACK_OBJECT(LOCALS_OBJECT(reg), 0); |
| 1116 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 1); | |
| 1117 | |
| 1118 case Bytecodes::_iload: | |
| 1119 case Bytecodes::_fload: | |
| 1120 SET_STACK_SLOT(LOCALS_SLOT(reg), 0); | |
| 1121 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 1); | |
| 1122 | |
| 1123 case Bytecodes::_lload: | |
| 1124 SET_STACK_LONG_FROM_ADDR(LOCALS_LONG_AT(reg), 1); | |
| 1125 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 2); | |
| 1126 | |
| 1127 case Bytecodes::_dload: | |
| 1128 SET_STACK_DOUBLE_FROM_ADDR(LOCALS_LONG_AT(reg), 1); | |
| 1129 UPDATE_PC_AND_TOS_AND_CONTINUE(4, 2); | |
| 1130 | |
| 1131 case Bytecodes::_astore: | |
| 1132 astore(topOfStack, -1, locals, reg); | |
| 1133 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -1); | |
| 1134 | |
| 1135 case Bytecodes::_istore: | |
| 1136 case Bytecodes::_fstore: | |
| 1137 SET_LOCALS_SLOT(STACK_SLOT(-1), reg); | |
| 1138 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -1); | |
| 1139 | |
| 1140 case Bytecodes::_lstore: | |
| 1141 SET_LOCALS_LONG(STACK_LONG(-1), reg); | |
| 1142 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -2); | |
| 1143 | |
| 1144 case Bytecodes::_dstore: | |
| 1145 SET_LOCALS_DOUBLE(STACK_DOUBLE(-1), reg); | |
| 1146 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -2); | |
| 1147 | |
| 1148 case Bytecodes::_iinc: { | |
| 1149 int16_t offset = (int16_t)Bytes::get_Java_u2(pc+4); | |
| 1150 // Be nice to see what this generates.... QQQ | |
| 1151 SET_LOCALS_INT(LOCALS_INT(reg) + offset, reg); | |
| 1152 UPDATE_PC_AND_CONTINUE(6); | |
| 1153 } | |
| 1154 case Bytecodes::_ret: | |
| 1155 pc = istate->method()->code_base() + (intptr_t)(LOCALS_ADDR(reg)); | |
| 1156 UPDATE_PC_AND_CONTINUE(0); | |
| 1157 default: | |
| 1158 VM_JAVA_ERROR(vmSymbols::java_lang_InternalError(), "undefined opcode"); | |
| 1159 } | |
| 1160 } | |
| 1161 | |
| 1162 | |
| 1163 #undef OPC_STORE_n | |
| 1164 #define OPC_STORE_n(num) \ | |
| 1165 CASE(_astore_##num): \ | |
| 1166 astore(topOfStack, -1, locals, num); \ | |
| 1167 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
| 1168 CASE(_istore_##num): \ | |
| 1169 CASE(_fstore_##num): \ | |
| 1170 SET_LOCALS_SLOT(STACK_SLOT(-1), num); \ | |
| 1171 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
| 1172 | |
| 1173 OPC_STORE_n(0); | |
| 1174 OPC_STORE_n(1); | |
| 1175 OPC_STORE_n(2); | |
| 1176 OPC_STORE_n(3); | |
| 1177 | |
| 1178 #undef OPC_DSTORE_n | |
| 1179 #define OPC_DSTORE_n(num) \ | |
| 1180 CASE(_dstore_##num): \ | |
| 1181 SET_LOCALS_DOUBLE(STACK_DOUBLE(-1), num); \ | |
| 1182 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); \ | |
| 1183 CASE(_lstore_##num): \ | |
| 1184 SET_LOCALS_LONG(STACK_LONG(-1), num); \ | |
| 1185 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); | |
| 1186 | |
| 1187 OPC_DSTORE_n(0); | |
| 1188 OPC_DSTORE_n(1); | |
| 1189 OPC_DSTORE_n(2); | |
| 1190 OPC_DSTORE_n(3); | |
| 1191 | |
| 1192 /* stack pop, dup, and insert opcodes */ | |
| 1193 | |
| 1194 | |
| 1195 CASE(_pop): /* Discard the top item on the stack */ | |
| 1196 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
| 1197 | |
| 1198 | |
| 1199 CASE(_pop2): /* Discard the top 2 items on the stack */ | |
| 1200 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); | |
| 1201 | |
| 1202 | |
| 1203 CASE(_dup): /* Duplicate the top item on the stack */ | |
| 1204 dup(topOfStack); | |
| 1205 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
| 1206 | |
| 1207 CASE(_dup2): /* Duplicate the top 2 items on the stack */ | |
| 1208 dup2(topOfStack); | |
| 1209 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
| 1210 | |
| 1211 CASE(_dup_x1): /* insert top word two down */ | |
| 1212 dup_x1(topOfStack); | |
| 1213 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
| 1214 | |
| 1215 CASE(_dup_x2): /* insert top word three down */ | |
| 1216 dup_x2(topOfStack); | |
| 1217 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
| 1218 | |
| 1219 CASE(_dup2_x1): /* insert top 2 slots three down */ | |
| 1220 dup2_x1(topOfStack); | |
| 1221 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
| 1222 | |
| 1223 CASE(_dup2_x2): /* insert top 2 slots four down */ | |
| 1224 dup2_x2(topOfStack); | |
| 1225 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
| 1226 | |
| 1227 CASE(_swap): { /* swap top two elements on the stack */ | |
| 1228 swap(topOfStack); | |
| 1229 UPDATE_PC_AND_CONTINUE(1); | |
| 1230 } | |
| 1231 | |
| 1232 /* Perform various binary integer operations */ | |
| 1233 | |
| 1234 #undef OPC_INT_BINARY | |
| 1235 #define OPC_INT_BINARY(opcname, opname, test) \ | |
| 1236 CASE(_i##opcname): \ | |
| 1237 if (test && (STACK_INT(-1) == 0)) { \ | |
| 1238 VM_JAVA_ERROR(vmSymbols::java_lang_ArithmeticException(), \ | |
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1239 "/ by zero"); \ |
| 0 | 1240 } \ |
| 1241 SET_STACK_INT(VMint##opname(STACK_INT(-2), \ | |
| 1242 STACK_INT(-1)), \ | |
| 1243 -2); \ | |
| 1244 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
| 1245 CASE(_l##opcname): \ | |
| 1246 { \ | |
| 1247 if (test) { \ | |
| 1248 jlong l1 = STACK_LONG(-1); \ | |
| 1249 if (VMlongEqz(l1)) { \ | |
| 1250 VM_JAVA_ERROR(vmSymbols::java_lang_ArithmeticException(), \ | |
| 1251 "/ by long zero"); \ | |
| 1252 } \ | |
| 1253 } \ | |
| 1254 /* First long at (-1,-2) next long at (-3,-4) */ \ | |
| 1255 SET_STACK_LONG(VMlong##opname(STACK_LONG(-3), \ | |
| 1256 STACK_LONG(-1)), \ | |
| 1257 -3); \ | |
| 1258 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); \ | |
| 1259 } | |
| 1260 | |
| 1261 OPC_INT_BINARY(add, Add, 0); | |
| 1262 OPC_INT_BINARY(sub, Sub, 0); | |
| 1263 OPC_INT_BINARY(mul, Mul, 0); | |
| 1264 OPC_INT_BINARY(and, And, 0); | |
| 1265 OPC_INT_BINARY(or, Or, 0); | |
| 1266 OPC_INT_BINARY(xor, Xor, 0); | |
| 1267 OPC_INT_BINARY(div, Div, 1); | |
| 1268 OPC_INT_BINARY(rem, Rem, 1); | |
| 1269 | |
| 1270 | |
| 1271 /* Perform various binary floating number operations */ | |
| 1272 /* On some machine/platforms/compilers div zero check can be implicit */ | |
| 1273 | |
| 1274 #undef OPC_FLOAT_BINARY | |
| 1275 #define OPC_FLOAT_BINARY(opcname, opname) \ | |
| 1276 CASE(_d##opcname): { \ | |
| 1277 SET_STACK_DOUBLE(VMdouble##opname(STACK_DOUBLE(-3), \ | |
| 1278 STACK_DOUBLE(-1)), \ | |
| 1279 -3); \ | |
| 1280 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -2); \ | |
| 1281 } \ | |
| 1282 CASE(_f##opcname): \ | |
| 1283 SET_STACK_FLOAT(VMfloat##opname(STACK_FLOAT(-2), \ | |
| 1284 STACK_FLOAT(-1)), \ | |
| 1285 -2); \ | |
| 1286 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
| 1287 | |
| 1288 | |
| 1289 OPC_FLOAT_BINARY(add, Add); | |
| 1290 OPC_FLOAT_BINARY(sub, Sub); | |
| 1291 OPC_FLOAT_BINARY(mul, Mul); | |
| 1292 OPC_FLOAT_BINARY(div, Div); | |
| 1293 OPC_FLOAT_BINARY(rem, Rem); | |
| 1294 | |
| 1295 /* Shift operations | |
| 1296 * Shift left int and long: ishl, lshl | |
| 1297 * Logical shift right int and long w/zero extension: iushr, lushr | |
| 1298 * Arithmetic shift right int and long w/sign extension: ishr, lshr | |
| 1299 */ | |
| 1300 | |
| 1301 #undef OPC_SHIFT_BINARY | |
| 1302 #define OPC_SHIFT_BINARY(opcname, opname) \ | |
| 1303 CASE(_i##opcname): \ | |
| 1304 SET_STACK_INT(VMint##opname(STACK_INT(-2), \ | |
| 1305 STACK_INT(-1)), \ | |
| 1306 -2); \ | |
| 1307 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
| 1308 CASE(_l##opcname): \ | |
| 1309 { \ | |
| 1310 SET_STACK_LONG(VMlong##opname(STACK_LONG(-2), \ | |
| 1311 STACK_INT(-1)), \ | |
| 1312 -2); \ | |
| 1313 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
| 1314 } | |
| 1315 | |
| 1316 OPC_SHIFT_BINARY(shl, Shl); | |
| 1317 OPC_SHIFT_BINARY(shr, Shr); | |
| 1318 OPC_SHIFT_BINARY(ushr, Ushr); | |
| 1319 | |
| 1320 /* Increment local variable by constant */ | |
| 1321 CASE(_iinc): | |
| 1322 { | |
| 1323 // locals[pc[1]].j.i += (jbyte)(pc[2]); | |
| 1324 SET_LOCALS_INT(LOCALS_INT(pc[1]) + (jbyte)(pc[2]), pc[1]); | |
| 1325 UPDATE_PC_AND_CONTINUE(3); | |
| 1326 } | |
| 1327 | |
| 1328 /* negate the value on the top of the stack */ | |
| 1329 | |
| 1330 CASE(_ineg): | |
| 1331 SET_STACK_INT(VMintNeg(STACK_INT(-1)), -1); | |
| 1332 UPDATE_PC_AND_CONTINUE(1); | |
| 1333 | |
| 1334 CASE(_fneg): | |
| 1335 SET_STACK_FLOAT(VMfloatNeg(STACK_FLOAT(-1)), -1); | |
| 1336 UPDATE_PC_AND_CONTINUE(1); | |
| 1337 | |
| 1338 CASE(_lneg): | |
| 1339 { | |
| 1340 SET_STACK_LONG(VMlongNeg(STACK_LONG(-1)), -1); | |
| 1341 UPDATE_PC_AND_CONTINUE(1); | |
| 1342 } | |
| 1343 | |
| 1344 CASE(_dneg): | |
| 1345 { | |
| 1346 SET_STACK_DOUBLE(VMdoubleNeg(STACK_DOUBLE(-1)), -1); | |
| 1347 UPDATE_PC_AND_CONTINUE(1); | |
| 1348 } | |
| 1349 | |
| 1350 /* Conversion operations */ | |
| 1351 | |
| 1352 CASE(_i2f): /* convert top of stack int to float */ | |
| 1353 SET_STACK_FLOAT(VMint2Float(STACK_INT(-1)), -1); | |
| 1354 UPDATE_PC_AND_CONTINUE(1); | |
| 1355 | |
| 1356 CASE(_i2l): /* convert top of stack int to long */ | |
| 1357 { | |
| 1358 // this is ugly QQQ | |
| 1359 jlong r = VMint2Long(STACK_INT(-1)); | |
| 1360 MORE_STACK(-1); // Pop | |
| 1361 SET_STACK_LONG(r, 1); | |
| 1362 | |
| 1363 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
| 1364 } | |
| 1365 | |
| 1366 CASE(_i2d): /* convert top of stack int to double */ | |
| 1367 { | |
| 1368 // this is ugly QQQ (why cast to jlong?? ) | |
| 1369 jdouble r = (jlong)STACK_INT(-1); | |
| 1370 MORE_STACK(-1); // Pop | |
| 1371 SET_STACK_DOUBLE(r, 1); | |
| 1372 | |
| 1373 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
| 1374 } | |
| 1375 | |
| 1376 CASE(_l2i): /* convert top of stack long to int */ | |
| 1377 { | |
| 1378 jint r = VMlong2Int(STACK_LONG(-1)); | |
| 1379 MORE_STACK(-2); // Pop | |
| 1380 SET_STACK_INT(r, 0); | |
| 1381 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
| 1382 } | |
| 1383 | |
| 1384 CASE(_l2f): /* convert top of stack long to float */ | |
| 1385 { | |
| 1386 jlong r = STACK_LONG(-1); | |
| 1387 MORE_STACK(-2); // Pop | |
| 1388 SET_STACK_FLOAT(VMlong2Float(r), 0); | |
| 1389 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
| 1390 } | |
| 1391 | |
| 1392 CASE(_l2d): /* convert top of stack long to double */ | |
| 1393 { | |
| 1394 jlong r = STACK_LONG(-1); | |
| 1395 MORE_STACK(-2); // Pop | |
| 1396 SET_STACK_DOUBLE(VMlong2Double(r), 1); | |
| 1397 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
| 1398 } | |
| 1399 | |
| 1400 CASE(_f2i): /* Convert top of stack float to int */ | |
| 1401 SET_STACK_INT(SharedRuntime::f2i(STACK_FLOAT(-1)), -1); | |
| 1402 UPDATE_PC_AND_CONTINUE(1); | |
| 1403 | |
| 1404 CASE(_f2l): /* convert top of stack float to long */ | |
| 1405 { | |
| 1406 jlong r = SharedRuntime::f2l(STACK_FLOAT(-1)); | |
| 1407 MORE_STACK(-1); // POP | |
| 1408 SET_STACK_LONG(r, 1); | |
| 1409 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
| 1410 } | |
| 1411 | |
| 1412 CASE(_f2d): /* convert top of stack float to double */ | |
| 1413 { | |
| 1414 jfloat f; | |
| 1415 jdouble r; | |
| 1416 f = STACK_FLOAT(-1); | |
| 1417 r = (jdouble) f; | |
| 1418 MORE_STACK(-1); // POP | |
| 1419 SET_STACK_DOUBLE(r, 1); | |
| 1420 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
| 1421 } | |
| 1422 | |
| 1423 CASE(_d2i): /* convert top of stack double to int */ | |
| 1424 { | |
| 1425 jint r1 = SharedRuntime::d2i(STACK_DOUBLE(-1)); | |
| 1426 MORE_STACK(-2); | |
| 1427 SET_STACK_INT(r1, 0); | |
| 1428 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
| 1429 } | |
| 1430 | |
| 1431 CASE(_d2f): /* convert top of stack double to float */ | |
| 1432 { | |
| 1433 jfloat r1 = VMdouble2Float(STACK_DOUBLE(-1)); | |
| 1434 MORE_STACK(-2); | |
| 1435 SET_STACK_FLOAT(r1, 0); | |
| 1436 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
| 1437 } | |
| 1438 | |
| 1439 CASE(_d2l): /* convert top of stack double to long */ | |
| 1440 { | |
| 1441 jlong r1 = SharedRuntime::d2l(STACK_DOUBLE(-1)); | |
| 1442 MORE_STACK(-2); | |
| 1443 SET_STACK_LONG(r1, 1); | |
| 1444 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 2); | |
| 1445 } | |
| 1446 | |
| 1447 CASE(_i2b): | |
| 1448 SET_STACK_INT(VMint2Byte(STACK_INT(-1)), -1); | |
| 1449 UPDATE_PC_AND_CONTINUE(1); | |
| 1450 | |
| 1451 CASE(_i2c): | |
| 1452 SET_STACK_INT(VMint2Char(STACK_INT(-1)), -1); | |
| 1453 UPDATE_PC_AND_CONTINUE(1); | |
| 1454 | |
| 1455 CASE(_i2s): | |
| 1456 SET_STACK_INT(VMint2Short(STACK_INT(-1)), -1); | |
| 1457 UPDATE_PC_AND_CONTINUE(1); | |
| 1458 | |
| 1459 /* comparison operators */ | |
| 1460 | |
| 1461 | |
| 1462 #define COMPARISON_OP(name, comparison) \ | |
| 1463 CASE(_if_icmp##name): { \ | |
| 1464 int skip = (STACK_INT(-2) comparison STACK_INT(-1)) \ | |
| 1465 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ | |
| 1466 address branch_pc = pc; \ | |
| 1467 UPDATE_PC_AND_TOS(skip, -2); \ | |
| 1468 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
| 1469 CONTINUE; \ | |
| 1470 } \ | |
| 1471 CASE(_if##name): { \ | |
| 1472 int skip = (STACK_INT(-1) comparison 0) \ | |
| 1473 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ | |
| 1474 address branch_pc = pc; \ | |
| 1475 UPDATE_PC_AND_TOS(skip, -1); \ | |
| 1476 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
| 1477 CONTINUE; \ | |
| 1478 } | |
| 1479 | |
| 1480 #define COMPARISON_OP2(name, comparison) \ | |
| 1481 COMPARISON_OP(name, comparison) \ | |
| 1482 CASE(_if_acmp##name): { \ | |
| 1483 int skip = (STACK_OBJECT(-2) comparison STACK_OBJECT(-1)) \ | |
| 1484 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ | |
| 1485 address branch_pc = pc; \ | |
| 1486 UPDATE_PC_AND_TOS(skip, -2); \ | |
| 1487 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
| 1488 CONTINUE; \ | |
| 1489 } | |
| 1490 | |
| 1491 #define NULL_COMPARISON_NOT_OP(name) \ | |
| 1492 CASE(_if##name): { \ | |
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1493 int skip = (!(STACK_OBJECT(-1) == NULL)) \ |
| 0 | 1494 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ |
| 1495 address branch_pc = pc; \ | |
| 1496 UPDATE_PC_AND_TOS(skip, -1); \ | |
| 1497 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
| 1498 CONTINUE; \ | |
| 1499 } | |
| 1500 | |
| 1501 #define NULL_COMPARISON_OP(name) \ | |
| 1502 CASE(_if##name): { \ | |
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1503 int skip = ((STACK_OBJECT(-1) == NULL)) \ |
| 0 | 1504 ? (int16_t)Bytes::get_Java_u2(pc + 1) : 3; \ |
| 1505 address branch_pc = pc; \ | |
| 1506 UPDATE_PC_AND_TOS(skip, -1); \ | |
| 1507 DO_BACKEDGE_CHECKS(skip, branch_pc); \ | |
| 1508 CONTINUE; \ | |
| 1509 } | |
| 1510 COMPARISON_OP(lt, <); | |
| 1511 COMPARISON_OP(gt, >); | |
| 1512 COMPARISON_OP(le, <=); | |
| 1513 COMPARISON_OP(ge, >=); | |
| 1514 COMPARISON_OP2(eq, ==); /* include ref comparison */ | |
| 1515 COMPARISON_OP2(ne, !=); /* include ref comparison */ | |
| 1516 NULL_COMPARISON_OP(null); | |
| 1517 NULL_COMPARISON_NOT_OP(nonnull); | |
| 1518 | |
| 1519 /* Goto pc at specified offset in switch table. */ | |
| 1520 | |
| 1521 CASE(_tableswitch): { | |
| 1522 jint* lpc = (jint*)VMalignWordUp(pc+1); | |
| 1523 int32_t key = STACK_INT(-1); | |
| 1524 int32_t low = Bytes::get_Java_u4((address)&lpc[1]); | |
| 1525 int32_t high = Bytes::get_Java_u4((address)&lpc[2]); | |
| 1526 int32_t skip; | |
| 1527 key -= low; | |
| 1528 skip = ((uint32_t) key > (uint32_t)(high - low)) | |
| 1529 ? Bytes::get_Java_u4((address)&lpc[0]) | |
| 1530 : Bytes::get_Java_u4((address)&lpc[key + 3]); | |
| 1531 // Does this really need a full backedge check (osr?) | |
| 1532 address branch_pc = pc; | |
| 1533 UPDATE_PC_AND_TOS(skip, -1); | |
| 1534 DO_BACKEDGE_CHECKS(skip, branch_pc); | |
| 1535 CONTINUE; | |
| 1536 } | |
| 1537 | |
| 1538 /* Goto pc whose table entry matches specified key */ | |
| 1539 | |
| 1540 CASE(_lookupswitch): { | |
| 1541 jint* lpc = (jint*)VMalignWordUp(pc+1); | |
| 1542 int32_t key = STACK_INT(-1); | |
| 1543 int32_t skip = Bytes::get_Java_u4((address) lpc); /* default amount */ | |
| 1544 int32_t npairs = Bytes::get_Java_u4((address) &lpc[1]); | |
| 1545 while (--npairs >= 0) { | |
| 1546 lpc += 2; | |
| 1547 if (key == (int32_t)Bytes::get_Java_u4((address)lpc)) { | |
| 1548 skip = Bytes::get_Java_u4((address)&lpc[1]); | |
| 1549 break; | |
| 1550 } | |
| 1551 } | |
| 1552 address branch_pc = pc; | |
| 1553 UPDATE_PC_AND_TOS(skip, -1); | |
| 1554 DO_BACKEDGE_CHECKS(skip, branch_pc); | |
| 1555 CONTINUE; | |
| 1556 } | |
| 1557 | |
| 1558 CASE(_fcmpl): | |
| 1559 CASE(_fcmpg): | |
| 1560 { | |
| 1561 SET_STACK_INT(VMfloatCompare(STACK_FLOAT(-2), | |
| 1562 STACK_FLOAT(-1), | |
| 1563 (opcode == Bytecodes::_fcmpl ? -1 : 1)), | |
| 1564 -2); | |
| 1565 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
| 1566 } | |
| 1567 | |
| 1568 CASE(_dcmpl): | |
| 1569 CASE(_dcmpg): | |
| 1570 { | |
| 1571 int r = VMdoubleCompare(STACK_DOUBLE(-3), | |
| 1572 STACK_DOUBLE(-1), | |
| 1573 (opcode == Bytecodes::_dcmpl ? -1 : 1)); | |
| 1574 MORE_STACK(-4); // Pop | |
| 1575 SET_STACK_INT(r, 0); | |
| 1576 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
| 1577 } | |
| 1578 | |
| 1579 CASE(_lcmp): | |
| 1580 { | |
| 1581 int r = VMlongCompare(STACK_LONG(-3), STACK_LONG(-1)); | |
| 1582 MORE_STACK(-4); | |
| 1583 SET_STACK_INT(r, 0); | |
| 1584 UPDATE_PC_AND_TOS_AND_CONTINUE(1, 1); | |
| 1585 } | |
| 1586 | |
| 1587 | |
| 1588 /* Return from a method */ | |
| 1589 | |
| 1590 CASE(_areturn): | |
| 1591 CASE(_ireturn): | |
| 1592 CASE(_freturn): | |
| 1593 { | |
| 1594 // Allow a safepoint before returning to frame manager. | |
| 1595 SAFEPOINT; | |
| 1596 | |
| 1597 goto handle_return; | |
| 1598 } | |
| 1599 | |
| 1600 CASE(_lreturn): | |
| 1601 CASE(_dreturn): | |
| 1602 { | |
| 1603 // Allow a safepoint before returning to frame manager. | |
| 1604 SAFEPOINT; | |
| 1605 goto handle_return; | |
| 1606 } | |
| 1607 | |
| 1608 CASE(_return_register_finalizer): { | |
| 1609 | |
| 1610 oop rcvr = LOCALS_OBJECT(0); | |
|
1681
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|
1611 VERIFY_OOP(rcvr); |
|
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|
1612 if (rcvr->klass()->has_finalizer()) { |
| 0 | 1613 CALL_VM(InterpreterRuntime::register_finalizer(THREAD, rcvr), handle_exception); |
| 1614 } | |
| 1615 goto handle_return; | |
| 1616 } | |
| 1617 CASE(_return): { | |
| 1618 | |
| 1619 // Allow a safepoint before returning to frame manager. | |
| 1620 SAFEPOINT; | |
| 1621 goto handle_return; | |
| 1622 } | |
| 1623 | |
| 1624 /* Array access byte-codes */ | |
| 1625 | |
| 1626 /* Every array access byte-code starts out like this */ | |
| 1627 // arrayOopDesc* arrObj = (arrayOopDesc*)STACK_OBJECT(arrayOff); | |
| 1628 #define ARRAY_INTRO(arrayOff) \ | |
| 1629 arrayOop arrObj = (arrayOop)STACK_OBJECT(arrayOff); \ | |
| 1630 jint index = STACK_INT(arrayOff + 1); \ | |
| 1631 char message[jintAsStringSize]; \ | |
| 1632 CHECK_NULL(arrObj); \ | |
| 1633 if ((uint32_t)index >= (uint32_t)arrObj->length()) { \ | |
| 1634 sprintf(message, "%d", index); \ | |
| 1635 VM_JAVA_ERROR(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), \ | |
| 1636 message); \ | |
| 1637 } | |
| 1638 | |
| 1639 /* 32-bit loads. These handle conversion from < 32-bit types */ | |
| 1640 #define ARRAY_LOADTO32(T, T2, format, stackRes, extra) \ | |
| 1641 { \ | |
| 1642 ARRAY_INTRO(-2); \ | |
|
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|
1643 (void)extra; \ |
| 0 | 1644 SET_ ## stackRes(*(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)), \ |
| 1645 -2); \ | |
| 1646 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); \ | |
| 1647 } | |
| 1648 | |
| 1649 /* 64-bit loads */ | |
| 1650 #define ARRAY_LOADTO64(T,T2, stackRes, extra) \ | |
| 1651 { \ | |
| 1652 ARRAY_INTRO(-2); \ | |
| 1653 SET_ ## stackRes(*(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)), -1); \ | |
|
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|
1654 (void)extra; \ |
|
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|
1655 UPDATE_PC_AND_CONTINUE(1); \ |
| 0 | 1656 } |
| 1657 | |
| 1658 CASE(_iaload): | |
| 1659 ARRAY_LOADTO32(T_INT, jint, "%d", STACK_INT, 0); | |
| 1660 CASE(_faload): | |
| 1661 ARRAY_LOADTO32(T_FLOAT, jfloat, "%f", STACK_FLOAT, 0); | |
|
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|
1662 CASE(_aaload): { |
|
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|
1663 ARRAY_INTRO(-2); |
|
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|
1664 SET_STACK_OBJECT(((objArrayOop) arrObj)->obj_at(index), -2); |
|
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|
1665 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); |
|
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|
1666 } |
| 0 | 1667 CASE(_baload): |
| 1668 ARRAY_LOADTO32(T_BYTE, jbyte, "%d", STACK_INT, 0); | |
| 1669 CASE(_caload): | |
| 1670 ARRAY_LOADTO32(T_CHAR, jchar, "%d", STACK_INT, 0); | |
| 1671 CASE(_saload): | |
| 1672 ARRAY_LOADTO32(T_SHORT, jshort, "%d", STACK_INT, 0); | |
| 1673 CASE(_laload): | |
| 1674 ARRAY_LOADTO64(T_LONG, jlong, STACK_LONG, 0); | |
| 1675 CASE(_daload): | |
| 1676 ARRAY_LOADTO64(T_DOUBLE, jdouble, STACK_DOUBLE, 0); | |
| 1677 | |
| 1678 /* 32-bit stores. These handle conversion to < 32-bit types */ | |
| 1679 #define ARRAY_STOREFROM32(T, T2, format, stackSrc, extra) \ | |
| 1680 { \ | |
| 1681 ARRAY_INTRO(-3); \ | |
|
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|
1682 (void)extra; \ |
| 0 | 1683 *(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)) = stackSrc( -1); \ |
| 1684 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -3); \ | |
| 1685 } | |
| 1686 | |
| 1687 /* 64-bit stores */ | |
| 1688 #define ARRAY_STOREFROM64(T, T2, stackSrc, extra) \ | |
| 1689 { \ | |
| 1690 ARRAY_INTRO(-4); \ | |
|
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|
1691 (void)extra; \ |
| 0 | 1692 *(T2 *)(((address) arrObj->base(T)) + index * sizeof(T2)) = stackSrc( -1); \ |
| 1693 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -4); \ | |
| 1694 } | |
| 1695 | |
| 1696 CASE(_iastore): | |
| 1697 ARRAY_STOREFROM32(T_INT, jint, "%d", STACK_INT, 0); | |
| 1698 CASE(_fastore): | |
| 1699 ARRAY_STOREFROM32(T_FLOAT, jfloat, "%f", STACK_FLOAT, 0); | |
| 1700 /* | |
| 1701 * This one looks different because of the assignability check | |
| 1702 */ | |
| 1703 CASE(_aastore): { | |
| 1704 oop rhsObject = STACK_OBJECT(-1); | |
|
1681
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|
1705 VERIFY_OOP(rhsObject); |
| 0 | 1706 ARRAY_INTRO( -3); |
| 1707 // arrObj, index are set | |
| 1708 if (rhsObject != NULL) { | |
| 1709 /* Check assignability of rhsObject into arrObj */ | |
|
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1710 Klass* rhsKlassOop = rhsObject->klass(); // EBX (subclass) |
|
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1711 Klass* elemKlassOop = ObjArrayKlass::cast(arrObj->klass())->element_klass(); // superklass EAX |
| 0 | 1712 // |
| 1713 // Check for compatibilty. This check must not GC!! | |
| 1714 // Seems way more expensive now that we must dispatch | |
| 1715 // | |
|
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1716 if (rhsKlassOop != elemKlassOop && !rhsKlassOop->is_subtype_of(elemKlassOop)) { // ebx->is... |
| 0 | 1717 VM_JAVA_ERROR(vmSymbols::java_lang_ArrayStoreException(), ""); |
| 1718 } | |
| 1719 } | |
|
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|
1720 ((objArrayOopDesc *) arrObj)->obj_at_put(index, rhsObject); |
| 0 | 1721 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -3); |
| 1722 } | |
| 1723 CASE(_bastore): | |
| 1724 ARRAY_STOREFROM32(T_BYTE, jbyte, "%d", STACK_INT, 0); | |
| 1725 CASE(_castore): | |
| 1726 ARRAY_STOREFROM32(T_CHAR, jchar, "%d", STACK_INT, 0); | |
| 1727 CASE(_sastore): | |
| 1728 ARRAY_STOREFROM32(T_SHORT, jshort, "%d", STACK_INT, 0); | |
| 1729 CASE(_lastore): | |
| 1730 ARRAY_STOREFROM64(T_LONG, jlong, STACK_LONG, 0); | |
| 1731 CASE(_dastore): | |
| 1732 ARRAY_STOREFROM64(T_DOUBLE, jdouble, STACK_DOUBLE, 0); | |
| 1733 | |
| 1734 CASE(_arraylength): | |
| 1735 { | |
| 1736 arrayOop ary = (arrayOop) STACK_OBJECT(-1); | |
| 1737 CHECK_NULL(ary); | |
| 1738 SET_STACK_INT(ary->length(), -1); | |
| 1739 UPDATE_PC_AND_CONTINUE(1); | |
| 1740 } | |
| 1741 | |
| 1742 /* monitorenter and monitorexit for locking/unlocking an object */ | |
| 1743 | |
| 1744 CASE(_monitorenter): { | |
| 1745 oop lockee = STACK_OBJECT(-1); | |
| 1746 // derefing's lockee ought to provoke implicit null check | |
| 1747 CHECK_NULL(lockee); | |
| 1748 // find a free monitor or one already allocated for this object | |
| 1749 // if we find a matching object then we need a new monitor | |
| 1750 // since this is recursive enter | |
| 1751 BasicObjectLock* limit = istate->monitor_base(); | |
| 1752 BasicObjectLock* most_recent = (BasicObjectLock*) istate->stack_base(); | |
| 1753 BasicObjectLock* entry = NULL; | |
| 1754 while (most_recent != limit ) { | |
| 1755 if (most_recent->obj() == NULL) entry = most_recent; | |
| 1756 else if (most_recent->obj() == lockee) break; | |
| 1757 most_recent++; | |
| 1758 } | |
| 1759 if (entry != NULL) { | |
| 1760 entry->set_obj(lockee); | |
|
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|
1761 int success = false; |
|
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|
1762 uintptr_t epoch_mask_in_place = (uintptr_t)markOopDesc::epoch_mask_in_place; |
|
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|
1763 |
|
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|
1764 markOop mark = lockee->mark(); |
|
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|
1765 intptr_t hash = (intptr_t) markOopDesc::no_hash; |
|
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|
1766 // implies UseBiasedLocking |
|
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|
1767 if (mark->has_bias_pattern()) { |
|
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|
1768 uintptr_t thread_ident; |
|
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|
1769 uintptr_t anticipated_bias_locking_value; |
|
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|
1770 thread_ident = (uintptr_t)istate->thread(); |
|
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|
1771 anticipated_bias_locking_value = |
|
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|
1772 (((uintptr_t)lockee->klass()->prototype_header() | thread_ident) ^ (uintptr_t)mark) & |
|
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|
1773 ~((uintptr_t) markOopDesc::age_mask_in_place); |
|
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|
1774 |
|
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|
1775 if (anticipated_bias_locking_value == 0) { |
|
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|
1776 // already biased towards this thread, nothing to do |
|
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|
1777 if (PrintBiasedLockingStatistics) { |
|
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|
1778 (* BiasedLocking::biased_lock_entry_count_addr())++; |
|
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|
1779 } |
|
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|
1780 success = true; |
|
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|
1781 } |
|
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|
1782 else if ((anticipated_bias_locking_value & markOopDesc::biased_lock_mask_in_place) != 0) { |
|
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|
1783 // try revoke bias |
|
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|
1784 markOop header = lockee->klass()->prototype_header(); |
|
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|
1785 if (hash != markOopDesc::no_hash) { |
|
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|
1786 header = header->copy_set_hash(hash); |
|
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|
1787 } |
|
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|
1788 if (Atomic::cmpxchg_ptr(header, lockee->mark_addr(), mark) == mark) { |
|
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|
1789 if (PrintBiasedLockingStatistics) |
|
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|
1790 (*BiasedLocking::revoked_lock_entry_count_addr())++; |
|
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|
1791 } |
|
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|
1792 } |
|
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|
1793 else if ((anticipated_bias_locking_value & epoch_mask_in_place) !=0) { |
|
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|
1794 // try rebias |
|
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|
1795 markOop new_header = (markOop) ( (intptr_t) lockee->klass()->prototype_header() | thread_ident); |
|
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|
1796 if (hash != markOopDesc::no_hash) { |
|
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|
1797 new_header = new_header->copy_set_hash(hash); |
|
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|
1798 } |
|
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|
1799 if (Atomic::cmpxchg_ptr((void*)new_header, lockee->mark_addr(), mark) == mark) { |
|
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|
1800 if (PrintBiasedLockingStatistics) |
|
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|
1801 (* BiasedLocking::rebiased_lock_entry_count_addr())++; |
|
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|
1802 } |
|
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|
1803 else { |
|
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|
1804 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception); |
|
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|
1805 } |
|
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|
1806 success = true; |
|
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|
1807 } |
|
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|
1808 else { |
|
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|
1809 // try to bias towards thread in case object is anonymously biased |
|
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|
1810 markOop header = (markOop) ((uintptr_t) mark & ((uintptr_t)markOopDesc::biased_lock_mask_in_place | |
|
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|
1811 (uintptr_t)markOopDesc::age_mask_in_place | |
|
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|
1812 epoch_mask_in_place)); |
|
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|
1813 if (hash != markOopDesc::no_hash) { |
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1814 header = header->copy_set_hash(hash); |
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1815 } |
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1816 markOop new_header = (markOop) ((uintptr_t) header | thread_ident); |
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1817 // debugging hint |
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1818 DEBUG_ONLY(entry->lock()->set_displaced_header((markOop) (uintptr_t) 0xdeaddead);) |
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1819 if (Atomic::cmpxchg_ptr((void*)new_header, lockee->mark_addr(), header) == header) { |
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1820 if (PrintBiasedLockingStatistics) |
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1821 (* BiasedLocking::anonymously_biased_lock_entry_count_addr())++; |
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1822 } |
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1823 else { |
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1824 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception); |
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1825 } |
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1826 success = true; |
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1827 } |
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1828 } |
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1829 |
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1830 // traditional lightweight locking |
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1831 if (!success) { |
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1832 markOop displaced = lockee->mark()->set_unlocked(); |
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1833 entry->lock()->set_displaced_header(displaced); |
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1834 bool call_vm = UseHeavyMonitors; |
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1835 if (call_vm || Atomic::cmpxchg_ptr(entry, lockee->mark_addr(), displaced) != displaced) { |
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1836 // Is it simple recursive case? |
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1837 if (!call_vm && THREAD->is_lock_owned((address) displaced->clear_lock_bits())) { |
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1838 entry->lock()->set_displaced_header(NULL); |
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1839 } else { |
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1840 CALL_VM(InterpreterRuntime::monitorenter(THREAD, entry), handle_exception); |
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1841 } |
| 0 | 1842 } |
| 1843 } | |
| 1844 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
| 1845 } else { | |
| 1846 istate->set_msg(more_monitors); | |
| 1847 UPDATE_PC_AND_RETURN(0); // Re-execute | |
| 1848 } | |
| 1849 } | |
| 1850 | |
| 1851 CASE(_monitorexit): { | |
| 1852 oop lockee = STACK_OBJECT(-1); | |
| 1853 CHECK_NULL(lockee); | |
| 1854 // derefing's lockee ought to provoke implicit null check | |
| 1855 // find our monitor slot | |
| 1856 BasicObjectLock* limit = istate->monitor_base(); | |
| 1857 BasicObjectLock* most_recent = (BasicObjectLock*) istate->stack_base(); | |
| 1858 while (most_recent != limit ) { | |
| 1859 if ((most_recent)->obj() == lockee) { | |
| 1860 BasicLock* lock = most_recent->lock(); | |
| 1861 markOop header = lock->displaced_header(); | |
| 1862 most_recent->set_obj(NULL); | |
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1863 if (!lockee->mark()->has_bias_pattern()) { |
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1864 bool call_vm = UseHeavyMonitors; |
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1865 // If it isn't recursive we either must swap old header or call the runtime |
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1866 if (header != NULL || call_vm) { |
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1867 if (call_vm || Atomic::cmpxchg_ptr(header, lockee->mark_addr(), lock) != lock) { |
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1868 // restore object for the slow case |
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1869 most_recent->set_obj(lockee); |
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1870 CALL_VM(InterpreterRuntime::monitorexit(THREAD, most_recent), handle_exception); |
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1871 } |
| 0 | 1872 } |
| 1873 } | |
| 1874 UPDATE_PC_AND_TOS_AND_CONTINUE(1, -1); | |
| 1875 } | |
| 1876 most_recent++; | |
| 1877 } | |
| 1878 // Need to throw illegal monitor state exception | |
| 1879 CALL_VM(InterpreterRuntime::throw_illegal_monitor_state_exception(THREAD), handle_exception); | |
| 2480 | 1880 ShouldNotReachHere(); |
| 0 | 1881 } |
| 1882 | |
| 1883 /* All of the non-quick opcodes. */ | |
| 1884 | |
| 1885 /* -Set clobbersCpIndex true if the quickened opcode clobbers the | |
| 1886 * constant pool index in the instruction. | |
| 1887 */ | |
| 1888 CASE(_getfield): | |
| 1889 CASE(_getstatic): | |
| 1890 { | |
| 1891 u2 index; | |
| 1892 ConstantPoolCacheEntry* cache; | |
| 1893 index = Bytes::get_native_u2(pc+1); | |
| 1894 | |
| 1895 // QQQ Need to make this as inlined as possible. Probably need to | |
| 1896 // split all the bytecode cases out so c++ compiler has a chance | |
| 1897 // for constant prop to fold everything possible away. | |
| 1898 | |
| 1899 cache = cp->entry_at(index); | |
| 1900 if (!cache->is_resolved((Bytecodes::Code)opcode)) { | |
| 1901 CALL_VM(InterpreterRuntime::resolve_get_put(THREAD, (Bytecodes::Code)opcode), | |
| 1902 handle_exception); | |
| 1903 cache = cp->entry_at(index); | |
| 1904 } | |
| 1905 | |
| 1906 #ifdef VM_JVMTI | |
| 1907 if (_jvmti_interp_events) { | |
| 1908 int *count_addr; | |
| 1909 oop obj; | |
| 1910 // Check to see if a field modification watch has been set | |
| 1911 // before we take the time to call into the VM. | |
| 1912 count_addr = (int *)JvmtiExport::get_field_access_count_addr(); | |
| 1913 if ( *count_addr > 0 ) { | |
| 1914 if ((Bytecodes::Code)opcode == Bytecodes::_getstatic) { | |
| 1915 obj = (oop)NULL; | |
| 1916 } else { | |
| 1917 obj = (oop) STACK_OBJECT(-1); | |
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1918 VERIFY_OOP(obj); |
| 0 | 1919 } |
| 1920 CALL_VM(InterpreterRuntime::post_field_access(THREAD, | |
| 1921 obj, | |
| 1922 cache), | |
| 1923 handle_exception); | |
| 1924 } | |
| 1925 } | |
| 1926 #endif /* VM_JVMTI */ | |
| 1927 | |
| 1928 oop obj; | |
| 1929 if ((Bytecodes::Code)opcode == Bytecodes::_getstatic) { | |
| 6926 | 1930 Klass* k = cache->f1_as_klass(); |
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1931 obj = k->java_mirror(); |
| 0 | 1932 MORE_STACK(1); // Assume single slot push |
| 1933 } else { | |
| 1934 obj = (oop) STACK_OBJECT(-1); | |
| 1935 CHECK_NULL(obj); | |
| 1936 } | |
| 1937 | |
| 1938 // | |
| 1939 // Now store the result on the stack | |
| 1940 // | |
| 1941 TosState tos_type = cache->flag_state(); | |
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1942 int field_offset = cache->f2_as_index(); |
| 0 | 1943 if (cache->is_volatile()) { |
| 1944 if (tos_type == atos) { | |
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1945 VERIFY_OOP(obj->obj_field_acquire(field_offset)); |
| 0 | 1946 SET_STACK_OBJECT(obj->obj_field_acquire(field_offset), -1); |
| 1947 } else if (tos_type == itos) { | |
| 1948 SET_STACK_INT(obj->int_field_acquire(field_offset), -1); | |
| 1949 } else if (tos_type == ltos) { | |
| 1950 SET_STACK_LONG(obj->long_field_acquire(field_offset), 0); | |
| 1951 MORE_STACK(1); | |
| 1952 } else if (tos_type == btos) { | |
| 1953 SET_STACK_INT(obj->byte_field_acquire(field_offset), -1); | |
| 1954 } else if (tos_type == ctos) { | |
| 1955 SET_STACK_INT(obj->char_field_acquire(field_offset), -1); | |
| 1956 } else if (tos_type == stos) { | |
| 1957 SET_STACK_INT(obj->short_field_acquire(field_offset), -1); | |
| 1958 } else if (tos_type == ftos) { | |
| 1959 SET_STACK_FLOAT(obj->float_field_acquire(field_offset), -1); | |
| 1960 } else { | |
| 1961 SET_STACK_DOUBLE(obj->double_field_acquire(field_offset), 0); | |
| 1962 MORE_STACK(1); | |
| 1963 } | |
| 1964 } else { | |
| 1965 if (tos_type == atos) { | |
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1966 VERIFY_OOP(obj->obj_field(field_offset)); |
| 0 | 1967 SET_STACK_OBJECT(obj->obj_field(field_offset), -1); |
| 1968 } else if (tos_type == itos) { | |
| 1969 SET_STACK_INT(obj->int_field(field_offset), -1); | |
| 1970 } else if (tos_type == ltos) { | |
| 1971 SET_STACK_LONG(obj->long_field(field_offset), 0); | |
| 1972 MORE_STACK(1); | |
| 1973 } else if (tos_type == btos) { | |
| 1974 SET_STACK_INT(obj->byte_field(field_offset), -1); | |
| 1975 } else if (tos_type == ctos) { | |
| 1976 SET_STACK_INT(obj->char_field(field_offset), -1); | |
| 1977 } else if (tos_type == stos) { | |
| 1978 SET_STACK_INT(obj->short_field(field_offset), -1); | |
| 1979 } else if (tos_type == ftos) { | |
| 1980 SET_STACK_FLOAT(obj->float_field(field_offset), -1); | |
| 1981 } else { | |
| 1982 SET_STACK_DOUBLE(obj->double_field(field_offset), 0); | |
| 1983 MORE_STACK(1); | |
| 1984 } | |
| 1985 } | |
| 1986 | |
| 1987 UPDATE_PC_AND_CONTINUE(3); | |
| 1988 } | |
| 1989 | |
| 1990 CASE(_putfield): | |
| 1991 CASE(_putstatic): | |
| 1992 { | |
| 1993 u2 index = Bytes::get_native_u2(pc+1); | |
| 1994 ConstantPoolCacheEntry* cache = cp->entry_at(index); | |
| 1995 if (!cache->is_resolved((Bytecodes::Code)opcode)) { | |
| 1996 CALL_VM(InterpreterRuntime::resolve_get_put(THREAD, (Bytecodes::Code)opcode), | |
| 1997 handle_exception); | |
| 1998 cache = cp->entry_at(index); | |
| 1999 } | |
| 2000 | |
| 2001 #ifdef VM_JVMTI | |
| 2002 if (_jvmti_interp_events) { | |
| 2003 int *count_addr; | |
| 2004 oop obj; | |
| 2005 // Check to see if a field modification watch has been set | |
| 2006 // before we take the time to call into the VM. | |
| 2007 count_addr = (int *)JvmtiExport::get_field_modification_count_addr(); | |
| 2008 if ( *count_addr > 0 ) { | |
| 2009 if ((Bytecodes::Code)opcode == Bytecodes::_putstatic) { | |
| 2010 obj = (oop)NULL; | |
| 2011 } | |
| 2012 else { | |
| 2013 if (cache->is_long() || cache->is_double()) { | |
| 2014 obj = (oop) STACK_OBJECT(-3); | |
| 2015 } else { | |
| 2016 obj = (oop) STACK_OBJECT(-2); | |
| 2017 } | |
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2018 VERIFY_OOP(obj); |
| 0 | 2019 } |
| 2020 | |
| 2021 CALL_VM(InterpreterRuntime::post_field_modification(THREAD, | |
| 2022 obj, | |
| 2023 cache, | |
| 2024 (jvalue *)STACK_SLOT(-1)), | |
| 2025 handle_exception); | |
| 2026 } | |
| 2027 } | |
| 2028 #endif /* VM_JVMTI */ | |
| 2029 | |
| 2030 // QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases | |
| 2031 // out so c++ compiler has a chance for constant prop to fold everything possible away. | |
| 2032 | |
| 2033 oop obj; | |
| 2034 int count; | |
| 2035 TosState tos_type = cache->flag_state(); | |
| 2036 | |
| 2037 count = -1; | |
| 2038 if (tos_type == ltos || tos_type == dtos) { | |
| 2039 --count; | |
| 2040 } | |
| 2041 if ((Bytecodes::Code)opcode == Bytecodes::_putstatic) { | |
| 6926 | 2042 Klass* k = cache->f1_as_klass(); |
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2043 obj = k->java_mirror(); |
| 0 | 2044 } else { |
| 2045 --count; | |
| 2046 obj = (oop) STACK_OBJECT(count); | |
| 2047 CHECK_NULL(obj); | |
| 2048 } | |
| 2049 | |
| 2050 // | |
| 2051 // Now store the result | |
| 2052 // | |
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2053 int field_offset = cache->f2_as_index(); |
| 0 | 2054 if (cache->is_volatile()) { |
| 2055 if (tos_type == itos) { | |
| 2056 obj->release_int_field_put(field_offset, STACK_INT(-1)); | |
| 2057 } else if (tos_type == atos) { | |
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2058 VERIFY_OOP(STACK_OBJECT(-1)); |
| 0 | 2059 obj->release_obj_field_put(field_offset, STACK_OBJECT(-1)); |
| 2060 } else if (tos_type == btos) { | |
| 2061 obj->release_byte_field_put(field_offset, STACK_INT(-1)); | |
| 2062 } else if (tos_type == ltos) { | |
| 2063 obj->release_long_field_put(field_offset, STACK_LONG(-1)); | |
| 2064 } else if (tos_type == ctos) { | |
| 2065 obj->release_char_field_put(field_offset, STACK_INT(-1)); | |
| 2066 } else if (tos_type == stos) { | |
| 2067 obj->release_short_field_put(field_offset, STACK_INT(-1)); | |
| 2068 } else if (tos_type == ftos) { | |
| 2069 obj->release_float_field_put(field_offset, STACK_FLOAT(-1)); | |
| 2070 } else { | |
| 2071 obj->release_double_field_put(field_offset, STACK_DOUBLE(-1)); | |
| 2072 } | |
| 2073 OrderAccess::storeload(); | |
| 2074 } else { | |
| 2075 if (tos_type == itos) { | |
| 2076 obj->int_field_put(field_offset, STACK_INT(-1)); | |
| 2077 } else if (tos_type == atos) { | |
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2078 VERIFY_OOP(STACK_OBJECT(-1)); |
| 0 | 2079 obj->obj_field_put(field_offset, STACK_OBJECT(-1)); |
| 2080 } else if (tos_type == btos) { | |
| 2081 obj->byte_field_put(field_offset, STACK_INT(-1)); | |
| 2082 } else if (tos_type == ltos) { | |
| 2083 obj->long_field_put(field_offset, STACK_LONG(-1)); | |
| 2084 } else if (tos_type == ctos) { | |
| 2085 obj->char_field_put(field_offset, STACK_INT(-1)); | |
| 2086 } else if (tos_type == stos) { | |
| 2087 obj->short_field_put(field_offset, STACK_INT(-1)); | |
| 2088 } else if (tos_type == ftos) { | |
| 2089 obj->float_field_put(field_offset, STACK_FLOAT(-1)); | |
| 2090 } else { | |
| 2091 obj->double_field_put(field_offset, STACK_DOUBLE(-1)); | |
| 2092 } | |
| 2093 } | |
| 2094 | |
| 2095 UPDATE_PC_AND_TOS_AND_CONTINUE(3, count); | |
| 2096 } | |
| 2097 | |
| 2098 CASE(_new): { | |
| 2099 u2 index = Bytes::get_Java_u2(pc+1); | |
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2100 ConstantPool* constants = istate->method()->constants(); |
| 0 | 2101 if (!constants->tag_at(index).is_unresolved_klass()) { |
| 2102 // Make sure klass is initialized and doesn't have a finalizer | |
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2103 Klass* entry = constants->slot_at(index).get_klass(); |
| 0 | 2104 assert(entry->is_klass(), "Should be resolved klass"); |
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2105 Klass* k_entry = (Klass*) entry; |
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2106 assert(k_entry->oop_is_instance(), "Should be InstanceKlass"); |
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2107 InstanceKlass* ik = (InstanceKlass*) k_entry; |
| 0 | 2108 if ( ik->is_initialized() && ik->can_be_fastpath_allocated() ) { |
| 2109 size_t obj_size = ik->size_helper(); | |
| 2110 oop result = NULL; | |
| 2111 // If the TLAB isn't pre-zeroed then we'll have to do it | |
| 2112 bool need_zero = !ZeroTLAB; | |
| 2113 if (UseTLAB) { | |
| 2114 result = (oop) THREAD->tlab().allocate(obj_size); | |
| 2115 } | |
| 2116 if (result == NULL) { | |
| 2117 need_zero = true; | |
| 2118 // Try allocate in shared eden | |
| 2119 retry: | |
| 2120 HeapWord* compare_to = *Universe::heap()->top_addr(); | |
| 2121 HeapWord* new_top = compare_to + obj_size; | |
| 2122 if (new_top <= *Universe::heap()->end_addr()) { | |
| 2123 if (Atomic::cmpxchg_ptr(new_top, Universe::heap()->top_addr(), compare_to) != compare_to) { | |
| 2124 goto retry; | |
| 2125 } | |
| 2126 result = (oop) compare_to; | |
| 2127 } | |
| 2128 } | |
| 2129 if (result != NULL) { | |
| 2130 // Initialize object (if nonzero size and need) and then the header | |
| 2131 if (need_zero ) { | |
| 2132 HeapWord* to_zero = (HeapWord*) result + sizeof(oopDesc) / oopSize; | |
| 2133 obj_size -= sizeof(oopDesc) / oopSize; | |
| 2134 if (obj_size > 0 ) { | |
| 2135 memset(to_zero, 0, obj_size * HeapWordSize); | |
| 2136 } | |
| 2137 } | |
| 2138 if (UseBiasedLocking) { | |
| 2139 result->set_mark(ik->prototype_header()); | |
| 2140 } else { | |
| 2141 result->set_mark(markOopDesc::prototype()); | |
| 2142 } | |
|
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|
2143 result->set_klass_gap(0); |
| 0 | 2144 result->set_klass(k_entry); |
| 2145 SET_STACK_OBJECT(result, 0); | |
| 2146 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 1); | |
| 2147 } | |
| 2148 } | |
| 2149 } | |
| 2150 // Slow case allocation | |
| 2151 CALL_VM(InterpreterRuntime::_new(THREAD, METHOD->constants(), index), | |
| 2152 handle_exception); | |
| 2153 SET_STACK_OBJECT(THREAD->vm_result(), 0); | |
| 2154 THREAD->set_vm_result(NULL); | |
| 2155 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 1); | |
| 2156 } | |
| 2157 CASE(_anewarray): { | |
| 2158 u2 index = Bytes::get_Java_u2(pc+1); | |
| 2159 jint size = STACK_INT(-1); | |
| 2160 CALL_VM(InterpreterRuntime::anewarray(THREAD, METHOD->constants(), index, size), | |
| 2161 handle_exception); | |
| 2162 SET_STACK_OBJECT(THREAD->vm_result(), -1); | |
| 2163 THREAD->set_vm_result(NULL); | |
| 2164 UPDATE_PC_AND_CONTINUE(3); | |
| 2165 } | |
| 2166 CASE(_multianewarray): { | |
| 2167 jint dims = *(pc+3); | |
| 2168 jint size = STACK_INT(-1); | |
| 2169 // stack grows down, dimensions are up! | |
| 2170 jint *dimarray = | |
| 1509 | 2171 (jint*)&topOfStack[dims * Interpreter::stackElementWords+ |
| 2172 Interpreter::stackElementWords-1]; | |
| 0 | 2173 //adjust pointer to start of stack element |
| 2174 CALL_VM(InterpreterRuntime::multianewarray(THREAD, dimarray), | |
| 2175 handle_exception); | |
| 2176 SET_STACK_OBJECT(THREAD->vm_result(), -dims); | |
| 2177 THREAD->set_vm_result(NULL); | |
| 2178 UPDATE_PC_AND_TOS_AND_CONTINUE(4, -(dims-1)); | |
| 2179 } | |
| 2180 CASE(_checkcast): | |
| 2181 if (STACK_OBJECT(-1) != NULL) { | |
|
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2182 VERIFY_OOP(STACK_OBJECT(-1)); |
| 0 | 2183 u2 index = Bytes::get_Java_u2(pc+1); |
| 2184 if (ProfileInterpreter) { | |
| 2185 // needs Profile_checkcast QQQ | |
| 2186 ShouldNotReachHere(); | |
| 2187 } | |
| 2188 // Constant pool may have actual klass or unresolved klass. If it is | |
| 2189 // unresolved we must resolve it | |
| 2190 if (METHOD->constants()->tag_at(index).is_unresolved_klass()) { | |
| 2191 CALL_VM(InterpreterRuntime::quicken_io_cc(THREAD), handle_exception); | |
| 2192 } | |
|
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2193 Klass* klassOf = (Klass*) METHOD->constants()->slot_at(index).get_klass(); |
|
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2194 Klass* objKlassOop = STACK_OBJECT(-1)->klass(); //ebx |
| 0 | 2195 // |
| 2196 // Check for compatibilty. This check must not GC!! | |
| 2197 // Seems way more expensive now that we must dispatch | |
| 2198 // | |
| 2199 if (objKlassOop != klassOf && | |
|
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2200 !objKlassOop->is_subtype_of(klassOf)) { |
| 0 | 2201 ResourceMark rm(THREAD); |
| 6983 | 2202 const char* objName = objKlassOop->external_name(); |
| 2203 const char* klassName = klassOf->external_name(); | |
| 0 | 2204 char* message = SharedRuntime::generate_class_cast_message( |
| 2205 objName, klassName); | |
| 2206 VM_JAVA_ERROR(vmSymbols::java_lang_ClassCastException(), message); | |
| 2207 } | |
| 2208 } else { | |
| 2209 if (UncommonNullCast) { | |
| 2210 // istate->method()->set_null_cast_seen(); | |
| 2211 // [RGV] Not sure what to do here! | |
| 2212 | |
| 2213 } | |
| 2214 } | |
| 2215 UPDATE_PC_AND_CONTINUE(3); | |
| 2216 | |
| 2217 CASE(_instanceof): | |
| 2218 if (STACK_OBJECT(-1) == NULL) { | |
| 2219 SET_STACK_INT(0, -1); | |
| 2220 } else { | |
|
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2221 VERIFY_OOP(STACK_OBJECT(-1)); |
| 0 | 2222 u2 index = Bytes::get_Java_u2(pc+1); |
| 2223 // Constant pool may have actual klass or unresolved klass. If it is | |
| 2224 // unresolved we must resolve it | |
| 2225 if (METHOD->constants()->tag_at(index).is_unresolved_klass()) { | |
| 2226 CALL_VM(InterpreterRuntime::quicken_io_cc(THREAD), handle_exception); | |
| 2227 } | |
|
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2228 Klass* klassOf = (Klass*) METHOD->constants()->slot_at(index).get_klass(); |
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2229 Klass* objKlassOop = STACK_OBJECT(-1)->klass(); |
| 0 | 2230 // |
| 2231 // Check for compatibilty. This check must not GC!! | |
| 2232 // Seems way more expensive now that we must dispatch | |
| 2233 // | |
|
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2234 if ( objKlassOop == klassOf || objKlassOop->is_subtype_of(klassOf)) { |
| 0 | 2235 SET_STACK_INT(1, -1); |
| 2236 } else { | |
| 2237 SET_STACK_INT(0, -1); | |
| 2238 } | |
| 2239 } | |
| 2240 UPDATE_PC_AND_CONTINUE(3); | |
| 2241 | |
| 2242 CASE(_ldc_w): | |
| 2243 CASE(_ldc): | |
| 2244 { | |
| 2245 u2 index; | |
| 2246 bool wide = false; | |
| 2247 int incr = 2; // frequent case | |
| 2248 if (opcode == Bytecodes::_ldc) { | |
| 2249 index = pc[1]; | |
| 2250 } else { | |
| 2251 index = Bytes::get_Java_u2(pc+1); | |
| 2252 incr = 3; | |
| 2253 wide = true; | |
| 2254 } | |
| 2255 | |
|
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2256 ConstantPool* constants = METHOD->constants(); |
| 0 | 2257 switch (constants->tag_at(index).value()) { |
| 2258 case JVM_CONSTANT_Integer: | |
| 2259 SET_STACK_INT(constants->int_at(index), 0); | |
| 2260 break; | |
| 2261 | |
| 2262 case JVM_CONSTANT_Float: | |
| 2263 SET_STACK_FLOAT(constants->float_at(index), 0); | |
| 2264 break; | |
| 2265 | |
| 2266 case JVM_CONSTANT_String: | |
|
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2267 { |
|
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2268 oop result = constants->resolved_references()->obj_at(index); |
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2269 if (result == NULL) { |
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2270 CALL_VM(InterpreterRuntime::resolve_ldc(THREAD, (Bytecodes::Code) opcode), handle_exception); |
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2271 SET_STACK_OBJECT(THREAD->vm_result(), 0); |
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2272 THREAD->set_vm_result(NULL); |
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2273 } else { |
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2274 VERIFY_OOP(result); |
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2275 SET_STACK_OBJECT(result, 0); |
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2276 } |
| 0 | 2277 break; |
|
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2278 } |
| 0 | 2279 |
| 2280 case JVM_CONSTANT_Class: | |
|
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2281 VERIFY_OOP(constants->resolved_klass_at(index)->java_mirror()); |
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2282 SET_STACK_OBJECT(constants->resolved_klass_at(index)->java_mirror(), 0); |
| 0 | 2283 break; |
| 2284 | |
| 2285 case JVM_CONSTANT_UnresolvedClass: | |
| 2286 case JVM_CONSTANT_UnresolvedClassInError: | |
| 2287 CALL_VM(InterpreterRuntime::ldc(THREAD, wide), handle_exception); | |
| 2288 SET_STACK_OBJECT(THREAD->vm_result(), 0); | |
| 2289 THREAD->set_vm_result(NULL); | |
| 2290 break; | |
| 2291 | |
| 2292 default: ShouldNotReachHere(); | |
| 2293 } | |
| 2294 UPDATE_PC_AND_TOS_AND_CONTINUE(incr, 1); | |
| 2295 } | |
| 2296 | |
| 2297 CASE(_ldc2_w): | |
| 2298 { | |
| 2299 u2 index = Bytes::get_Java_u2(pc+1); | |
| 2300 | |
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2301 ConstantPool* constants = METHOD->constants(); |
| 0 | 2302 switch (constants->tag_at(index).value()) { |
| 2303 | |
| 2304 case JVM_CONSTANT_Long: | |
| 2305 SET_STACK_LONG(constants->long_at(index), 1); | |
| 2306 break; | |
| 2307 | |
| 2308 case JVM_CONSTANT_Double: | |
| 2309 SET_STACK_DOUBLE(constants->double_at(index), 1); | |
| 2310 break; | |
| 2311 default: ShouldNotReachHere(); | |
| 2312 } | |
| 2313 UPDATE_PC_AND_TOS_AND_CONTINUE(3, 2); | |
| 2314 } | |
| 2315 | |
| 2480 | 2316 CASE(_fast_aldc_w): |
| 2317 CASE(_fast_aldc): { | |
| 2318 u2 index; | |
| 2319 int incr; | |
| 2320 if (opcode == Bytecodes::_fast_aldc) { | |
| 2321 index = pc[1]; | |
| 2322 incr = 2; | |
| 2323 } else { | |
| 2324 index = Bytes::get_native_u2(pc+1); | |
| 2325 incr = 3; | |
| 2326 } | |
| 2327 | |
| 2328 // We are resolved if the f1 field contains a non-null object (CallSite, etc.) | |
| 2329 // This kind of CP cache entry does not need to match the flags byte, because | |
| 2330 // there is a 1-1 relation between bytecode type and CP entry type. | |
|
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2331 ConstantPool* constants = METHOD->constants(); |
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2332 oop result = constants->resolved_references()->obj_at(index); |
|
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2333 if (result == NULL) { |
| 2480 | 2334 CALL_VM(InterpreterRuntime::resolve_ldc(THREAD, (Bytecodes::Code) opcode), |
| 2335 handle_exception); | |
|
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2336 result = THREAD->vm_result(); |
| 2480 | 2337 } |
| 2338 | |
|
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2339 VERIFY_OOP(result); |
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2340 SET_STACK_OBJECT(result, 0); |
| 2480 | 2341 UPDATE_PC_AND_TOS_AND_CONTINUE(incr, 1); |
| 2342 } | |
| 2343 | |
| 2344 CASE(_invokedynamic): { | |
| 6926 | 2345 |
| 2480 | 2346 if (!EnableInvokeDynamic) { |
| 2347 // We should not encounter this bytecode if !EnableInvokeDynamic. | |
| 2348 // The verifier will stop it. However, if we get past the verifier, | |
| 2349 // this will stop the thread in a reasonable way, without crashing the JVM. | |
| 2350 CALL_VM(InterpreterRuntime::throw_IncompatibleClassChangeError(THREAD), | |
| 2351 handle_exception); | |
| 2352 ShouldNotReachHere(); | |
| 2353 } | |
| 2354 | |
| 6926 | 2355 u4 index = Bytes::get_native_u4(pc+1); |
| 2356 ConstantPoolCacheEntry* cache = cp->constant_pool()->invokedynamic_cp_cache_entry_at(index); | |
| 2480 | 2357 |
|
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2358 // We are resolved if the resolved_references field contains a non-null object (CallSite, etc.) |
| 2480 | 2359 // This kind of CP cache entry does not need to match the flags byte, because |
| 2360 // there is a 1-1 relation between bytecode type and CP entry type. | |
| 6926 | 2361 if (! cache->is_resolved((Bytecodes::Code) opcode)) { |
| 2480 | 2362 CALL_VM(InterpreterRuntime::resolve_invokedynamic(THREAD), |
| 2363 handle_exception); | |
| 6926 | 2364 cache = cp->constant_pool()->invokedynamic_cp_cache_entry_at(index); |
| 2365 } | |
| 2366 | |
| 2367 Method* method = cache->f1_as_method(); | |
|
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2368 if (VerifyOops) method->verify(); |
| 6926 | 2369 |
| 2370 if (cache->has_appendix()) { | |
| 2371 ConstantPool* constants = METHOD->constants(); | |
| 2372 SET_STACK_OBJECT(cache->appendix_if_resolved(constants), 0); | |
| 2373 MORE_STACK(1); | |
| 2374 } | |
| 2375 | |
| 2376 istate->set_msg(call_method); | |
| 2377 istate->set_callee(method); | |
| 2378 istate->set_callee_entry_point(method->from_interpreted_entry()); | |
| 2379 istate->set_bcp_advance(5); | |
| 2380 | |
| 2381 UPDATE_PC_AND_RETURN(0); // I'll be back... | |
| 2382 } | |
| 2383 | |
| 2384 CASE(_invokehandle): { | |
| 2385 | |
| 2386 if (!EnableInvokeDynamic) { | |
| 2387 ShouldNotReachHere(); | |
| 2480 | 2388 } |
| 2389 | |
| 6926 | 2390 u2 index = Bytes::get_native_u2(pc+1); |
| 2391 ConstantPoolCacheEntry* cache = cp->entry_at(index); | |
| 2392 | |
| 2393 if (! cache->is_resolved((Bytecodes::Code) opcode)) { | |
| 2394 CALL_VM(InterpreterRuntime::resolve_invokehandle(THREAD), | |
| 2395 handle_exception); | |
| 2396 cache = cp->entry_at(index); | |
| 2397 } | |
| 2398 | |
| 2399 Method* method = cache->f1_as_method(); | |
|
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2400 if (VerifyOops) method->verify(); |
| 6926 | 2401 |
| 2402 if (cache->has_appendix()) { | |
| 2403 ConstantPool* constants = METHOD->constants(); | |
| 2404 SET_STACK_OBJECT(cache->appendix_if_resolved(constants), 0); | |
| 2405 MORE_STACK(1); | |
| 2406 } | |
| 2407 | |
| 2408 istate->set_msg(call_method); | |
| 2409 istate->set_callee(method); | |
| 2410 istate->set_callee_entry_point(method->from_interpreted_entry()); | |
| 2411 istate->set_bcp_advance(3); | |
| 2480 | 2412 |
| 2413 UPDATE_PC_AND_RETURN(0); // I'll be back... | |
| 2414 } | |
| 2415 | |
| 0 | 2416 CASE(_invokeinterface): { |
| 2417 u2 index = Bytes::get_native_u2(pc+1); | |
| 2418 | |
| 2419 // QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases | |
| 2420 // out so c++ compiler has a chance for constant prop to fold everything possible away. | |
| 2421 | |
| 2422 ConstantPoolCacheEntry* cache = cp->entry_at(index); | |
| 2423 if (!cache->is_resolved((Bytecodes::Code)opcode)) { | |
| 2424 CALL_VM(InterpreterRuntime::resolve_invoke(THREAD, (Bytecodes::Code)opcode), | |
| 2425 handle_exception); | |
| 2426 cache = cp->entry_at(index); | |
| 2427 } | |
| 2428 | |
| 2429 istate->set_msg(call_method); | |
| 2430 | |
| 2431 // Special case of invokeinterface called for virtual method of | |
| 2432 // java.lang.Object. See cpCacheOop.cpp for details. | |
| 2433 // This code isn't produced by javac, but could be produced by | |
| 2434 // another compliant java compiler. | |
|
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2435 if (cache->is_forced_virtual()) { |
|
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2436 Method* callee; |
| 0 | 2437 CHECK_NULL(STACK_OBJECT(-(cache->parameter_size()))); |
| 2438 if (cache->is_vfinal()) { | |
|
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2439 callee = cache->f2_as_vfinal_method(); |
| 0 | 2440 } else { |
| 2441 // get receiver | |
| 2442 int parms = cache->parameter_size(); | |
| 2443 // Same comments as invokevirtual apply here | |
|
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2444 VERIFY_OOP(STACK_OBJECT(-parms)); |
|
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2445 InstanceKlass* rcvrKlass = (InstanceKlass*) |
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2446 STACK_OBJECT(-parms)->klass(); |
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2447 callee = (Method*) rcvrKlass->start_of_vtable()[ cache->f2_as_index()]; |
| 0 | 2448 } |
| 2449 istate->set_callee(callee); | |
| 2450 istate->set_callee_entry_point(callee->from_interpreted_entry()); | |
| 2451 #ifdef VM_JVMTI | |
| 2452 if (JvmtiExport::can_post_interpreter_events() && THREAD->is_interp_only_mode()) { | |
| 2453 istate->set_callee_entry_point(callee->interpreter_entry()); | |
| 2454 } | |
| 2455 #endif /* VM_JVMTI */ | |
| 2456 istate->set_bcp_advance(5); | |
| 2457 UPDATE_PC_AND_RETURN(0); // I'll be back... | |
| 2458 } | |
| 2459 | |
| 2460 // this could definitely be cleaned up QQQ | |
|
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2461 Method* callee; |
|
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2462 Klass* iclass = cache->f1_as_klass(); |
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2463 // InstanceKlass* interface = (InstanceKlass*) iclass; |
| 0 | 2464 // get receiver |
| 2465 int parms = cache->parameter_size(); | |
| 2466 oop rcvr = STACK_OBJECT(-parms); | |
| 2467 CHECK_NULL(rcvr); | |
|
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2468 InstanceKlass* int2 = (InstanceKlass*) rcvr->klass(); |
| 0 | 2469 itableOffsetEntry* ki = (itableOffsetEntry*) int2->start_of_itable(); |
| 2470 int i; | |
| 2471 for ( i = 0 ; i < int2->itable_length() ; i++, ki++ ) { | |
| 2472 if (ki->interface_klass() == iclass) break; | |
| 2473 } | |
| 2474 // If the interface isn't found, this class doesn't implement this | |
| 2475 // interface. The link resolver checks this but only for the first | |
| 2476 // time this interface is called. | |
| 2477 if (i == int2->itable_length()) { | |
| 2478 VM_JAVA_ERROR(vmSymbols::java_lang_IncompatibleClassChangeError(), ""); | |
| 2479 } | |
|
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7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
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diff
changeset
|
2480 int mindex = cache->f2_as_index(); |
| 0 | 2481 itableMethodEntry* im = ki->first_method_entry(rcvr->klass()); |
| 2482 callee = im[mindex].method(); | |
| 2483 if (callee == NULL) { | |
| 2484 VM_JAVA_ERROR(vmSymbols::java_lang_AbstractMethodError(), ""); | |
| 2485 } | |
| 2486 | |
| 2487 istate->set_callee(callee); | |
| 2488 istate->set_callee_entry_point(callee->from_interpreted_entry()); | |
| 2489 #ifdef VM_JVMTI | |
| 2490 if (JvmtiExport::can_post_interpreter_events() && THREAD->is_interp_only_mode()) { | |
| 2491 istate->set_callee_entry_point(callee->interpreter_entry()); | |
| 2492 } | |
| 2493 #endif /* VM_JVMTI */ | |
| 2494 istate->set_bcp_advance(5); | |
| 2495 UPDATE_PC_AND_RETURN(0); // I'll be back... | |
| 2496 } | |
| 2497 | |
| 2498 CASE(_invokevirtual): | |
| 2499 CASE(_invokespecial): | |
| 2500 CASE(_invokestatic): { | |
| 2501 u2 index = Bytes::get_native_u2(pc+1); | |
| 2502 | |
| 2503 ConstantPoolCacheEntry* cache = cp->entry_at(index); | |
| 2504 // QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases | |
| 2505 // out so c++ compiler has a chance for constant prop to fold everything possible away. | |
| 2506 | |
| 2507 if (!cache->is_resolved((Bytecodes::Code)opcode)) { | |
| 2508 CALL_VM(InterpreterRuntime::resolve_invoke(THREAD, (Bytecodes::Code)opcode), | |
| 2509 handle_exception); | |
| 2510 cache = cp->entry_at(index); | |
| 2511 } | |
| 2512 | |
| 2513 istate->set_msg(call_method); | |
| 2514 { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2515 Method* callee; |
| 0 | 2516 if ((Bytecodes::Code)opcode == Bytecodes::_invokevirtual) { |
| 2517 CHECK_NULL(STACK_OBJECT(-(cache->parameter_size()))); | |
|
6266
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7023639: JSR 292 method handle invocation needs a fast path for compiled code
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parents:
3960
diff
changeset
|
2518 if (cache->is_vfinal()) callee = cache->f2_as_vfinal_method(); |
| 0 | 2519 else { |
| 2520 // get receiver | |
| 2521 int parms = cache->parameter_size(); | |
| 2522 // this works but needs a resourcemark and seems to create a vtable on every call: | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2523 // Method* callee = rcvr->klass()->vtable()->method_at(cache->f2_as_index()); |
| 0 | 2524 // |
| 2525 // this fails with an assert | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2526 // InstanceKlass* rcvrKlass = InstanceKlass::cast(STACK_OBJECT(-parms)->klass()); |
| 0 | 2527 // but this works |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
2528 VERIFY_OOP(STACK_OBJECT(-parms)); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2529 InstanceKlass* rcvrKlass = (InstanceKlass*) STACK_OBJECT(-parms)->klass(); |
| 0 | 2530 /* |
| 2531 Executing this code in java.lang.String: | |
| 2532 public String(char value[]) { | |
| 2533 this.count = value.length; | |
| 2534 this.value = (char[])value.clone(); | |
| 2535 } | |
| 2536 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2537 a find on rcvr->klass() reports: |
| 0 | 2538 {type array char}{type array class} |
| 2539 - klass: {other class} | |
| 2540 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2541 but using InstanceKlass::cast(STACK_OBJECT(-parms)->klass()) causes in assertion failure |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2542 because rcvr->klass()->oop_is_instance() == 0 |
| 0 | 2543 However it seems to have a vtable in the right location. Huh? |
| 2544 | |
| 2545 */ | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2546 callee = (Method*) rcvrKlass->start_of_vtable()[ cache->f2_as_index()]; |
| 0 | 2547 } |
| 2548 } else { | |
| 2549 if ((Bytecodes::Code)opcode == Bytecodes::_invokespecial) { | |
| 2550 CHECK_NULL(STACK_OBJECT(-(cache->parameter_size()))); | |
| 2551 } | |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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3960
diff
changeset
|
2552 callee = cache->f1_as_method(); |
| 0 | 2553 } |
| 2554 | |
| 2555 istate->set_callee(callee); | |
| 2556 istate->set_callee_entry_point(callee->from_interpreted_entry()); | |
| 2557 #ifdef VM_JVMTI | |
| 2558 if (JvmtiExport::can_post_interpreter_events() && THREAD->is_interp_only_mode()) { | |
| 2559 istate->set_callee_entry_point(callee->interpreter_entry()); | |
| 2560 } | |
| 2561 #endif /* VM_JVMTI */ | |
| 2562 istate->set_bcp_advance(3); | |
| 2563 UPDATE_PC_AND_RETURN(0); // I'll be back... | |
| 2564 } | |
| 2565 } | |
| 2566 | |
| 2567 /* Allocate memory for a new java object. */ | |
| 2568 | |
| 2569 CASE(_newarray): { | |
| 2570 BasicType atype = (BasicType) *(pc+1); | |
| 2571 jint size = STACK_INT(-1); | |
| 2572 CALL_VM(InterpreterRuntime::newarray(THREAD, atype, size), | |
| 2573 handle_exception); | |
| 2574 SET_STACK_OBJECT(THREAD->vm_result(), -1); | |
| 2575 THREAD->set_vm_result(NULL); | |
| 2576 | |
| 2577 UPDATE_PC_AND_CONTINUE(2); | |
| 2578 } | |
| 2579 | |
| 2580 /* Throw an exception. */ | |
| 2581 | |
| 2582 CASE(_athrow): { | |
| 2583 oop except_oop = STACK_OBJECT(-1); | |
| 2584 CHECK_NULL(except_oop); | |
| 2585 // set pending_exception so we use common code | |
| 2586 THREAD->set_pending_exception(except_oop, NULL, 0); | |
| 2587 goto handle_exception; | |
| 2588 } | |
| 2589 | |
| 2590 /* goto and jsr. They are exactly the same except jsr pushes | |
| 2591 * the address of the next instruction first. | |
| 2592 */ | |
| 2593 | |
| 2594 CASE(_jsr): { | |
| 2595 /* push bytecode index on stack */ | |
| 2596 SET_STACK_ADDR(((address)pc - (intptr_t)(istate->method()->code_base()) + 3), 0); | |
| 2597 MORE_STACK(1); | |
| 2598 /* FALL THROUGH */ | |
| 2599 } | |
| 2600 | |
| 2601 CASE(_goto): | |
| 2602 { | |
| 2603 int16_t offset = (int16_t)Bytes::get_Java_u2(pc + 1); | |
| 2604 address branch_pc = pc; | |
| 2605 UPDATE_PC(offset); | |
| 2606 DO_BACKEDGE_CHECKS(offset, branch_pc); | |
| 2607 CONTINUE; | |
| 2608 } | |
| 2609 | |
| 2610 CASE(_jsr_w): { | |
| 2611 /* push return address on the stack */ | |
| 2612 SET_STACK_ADDR(((address)pc - (intptr_t)(istate->method()->code_base()) + 5), 0); | |
| 2613 MORE_STACK(1); | |
| 2614 /* FALL THROUGH */ | |
| 2615 } | |
| 2616 | |
| 2617 CASE(_goto_w): | |
| 2618 { | |
| 2619 int32_t offset = Bytes::get_Java_u4(pc + 1); | |
| 2620 address branch_pc = pc; | |
| 2621 UPDATE_PC(offset); | |
| 2622 DO_BACKEDGE_CHECKS(offset, branch_pc); | |
| 2623 CONTINUE; | |
| 2624 } | |
| 2625 | |
| 2626 /* return from a jsr or jsr_w */ | |
| 2627 | |
| 2628 CASE(_ret): { | |
| 2629 pc = istate->method()->code_base() + (intptr_t)(LOCALS_ADDR(pc[1])); | |
| 2630 UPDATE_PC_AND_CONTINUE(0); | |
| 2631 } | |
| 2632 | |
| 2633 /* debugger breakpoint */ | |
| 2634 | |
| 2635 CASE(_breakpoint): { | |
| 2636 Bytecodes::Code original_bytecode; | |
| 2637 DECACHE_STATE(); | |
| 2638 SET_LAST_JAVA_FRAME(); | |
| 2639 original_bytecode = InterpreterRuntime::get_original_bytecode_at(THREAD, | |
| 2640 METHOD, pc); | |
| 2641 RESET_LAST_JAVA_FRAME(); | |
| 2642 CACHE_STATE(); | |
| 2643 if (THREAD->has_pending_exception()) goto handle_exception; | |
| 2644 CALL_VM(InterpreterRuntime::_breakpoint(THREAD, METHOD, pc), | |
| 2645 handle_exception); | |
| 2646 | |
| 2647 opcode = (jubyte)original_bytecode; | |
| 2648 goto opcode_switch; | |
| 2649 } | |
| 2650 | |
| 2651 DEFAULT: | |
|
1490
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1347
diff
changeset
|
2652 fatal(err_msg("Unimplemented opcode %d = %s", opcode, |
|
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1347
diff
changeset
|
2653 Bytecodes::name((Bytecodes::Code)opcode))); |
| 0 | 2654 goto finish; |
| 2655 | |
| 2656 } /* switch(opc) */ | |
| 2657 | |
| 2658 | |
| 2659 #ifdef USELABELS | |
| 2660 check_for_exception: | |
| 2661 #endif | |
| 2662 { | |
| 2663 if (!THREAD->has_pending_exception()) { | |
| 2664 CONTINUE; | |
| 2665 } | |
| 2666 /* We will be gcsafe soon, so flush our state. */ | |
| 2667 DECACHE_PC(); | |
| 2668 goto handle_exception; | |
| 2669 } | |
| 2670 do_continue: ; | |
| 2671 | |
| 2672 } /* while (1) interpreter loop */ | |
| 2673 | |
| 2674 | |
| 2675 // An exception exists in the thread state see whether this activation can handle it | |
| 2676 handle_exception: { | |
| 2677 | |
| 2678 HandleMarkCleaner __hmc(THREAD); | |
| 2679 Handle except_oop(THREAD, THREAD->pending_exception()); | |
| 2680 // Prevent any subsequent HandleMarkCleaner in the VM | |
| 2681 // from freeing the except_oop handle. | |
| 2682 HandleMark __hm(THREAD); | |
| 2683 | |
| 2684 THREAD->clear_pending_exception(); | |
| 2685 assert(except_oop(), "No exception to process"); | |
| 2686 intptr_t continuation_bci; | |
| 2687 // expression stack is emptied | |
| 1509 | 2688 topOfStack = istate->stack_base() - Interpreter::stackElementWords; |
| 0 | 2689 CALL_VM(continuation_bci = (intptr_t)InterpreterRuntime::exception_handler_for_exception(THREAD, except_oop()), |
| 2690 handle_exception); | |
| 2691 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2692 except_oop = THREAD->vm_result(); |
| 0 | 2693 THREAD->set_vm_result(NULL); |
| 2694 if (continuation_bci >= 0) { | |
| 2695 // Place exception on top of stack | |
| 2696 SET_STACK_OBJECT(except_oop(), 0); | |
| 2697 MORE_STACK(1); | |
| 2698 pc = METHOD->code_base() + continuation_bci; | |
| 2699 if (TraceExceptions) { | |
| 2700 ttyLocker ttyl; | |
| 2701 ResourceMark rm; | |
| 2702 tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", except_oop->print_value_string(), except_oop()); | |
| 2703 tty->print_cr(" thrown in interpreter method <%s>", METHOD->print_value_string()); | |
| 2704 tty->print_cr(" at bci %d, continuing at %d for thread " INTPTR_FORMAT, | |
| 2705 pc - (intptr_t)METHOD->code_base(), | |
| 2706 continuation_bci, THREAD); | |
| 2707 } | |
| 2708 // for AbortVMOnException flag | |
| 2709 NOT_PRODUCT(Exceptions::debug_check_abort(except_oop)); | |
| 2710 goto run; | |
| 2711 } | |
| 2712 if (TraceExceptions) { | |
| 2713 ttyLocker ttyl; | |
| 2714 ResourceMark rm; | |
| 2715 tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", except_oop->print_value_string(), except_oop()); | |
| 2716 tty->print_cr(" thrown in interpreter method <%s>", METHOD->print_value_string()); | |
| 2717 tty->print_cr(" at bci %d, unwinding for thread " INTPTR_FORMAT, | |
| 2718 pc - (intptr_t) METHOD->code_base(), | |
| 2719 THREAD); | |
| 2720 } | |
| 2721 // for AbortVMOnException flag | |
| 2722 NOT_PRODUCT(Exceptions::debug_check_abort(except_oop)); | |
| 2723 // No handler in this activation, unwind and try again | |
| 2724 THREAD->set_pending_exception(except_oop(), NULL, 0); | |
| 2725 goto handle_return; | |
|
14400
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2726 } // handle_exception: |
| 0 | 2727 |
| 2728 // Return from an interpreter invocation with the result of the interpretation | |
| 2729 // on the top of the Java Stack (or a pending exception) | |
| 2730 | |
|
14400
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2731 handle_Pop_Frame: { |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2732 |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2733 // We don't really do anything special here except we must be aware |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2734 // that we can get here without ever locking the method (if sync). |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2735 // Also we skip the notification of the exit. |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2736 |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2737 istate->set_msg(popping_frame); |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2738 // Clear pending so while the pop is in process |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2739 // we don't start another one if a call_vm is done. |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2740 THREAD->clr_pop_frame_pending(); |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2741 // Let interpreter (only) see the we're in the process of popping a frame |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2742 THREAD->set_pop_frame_in_process(); |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2743 |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2744 goto handle_return; |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2745 |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2746 } // handle_Pop_Frame |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2747 |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2748 // ForceEarlyReturn ends a method, and returns to the caller with a return value |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2749 // given by the invoker of the early return. |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2750 handle_Early_Return: { |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2751 |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2752 istate->set_msg(early_return); |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2753 |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2754 // Clear expression stack. |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2755 topOfStack = istate->stack_base() - Interpreter::stackElementWords; |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2756 |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2757 JvmtiThreadState *ts = THREAD->jvmti_thread_state(); |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2758 |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2759 // Push the value to be returned. |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2760 switch (istate->method()->result_type()) { |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2761 case T_BOOLEAN: |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2762 case T_SHORT: |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2763 case T_BYTE: |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2764 case T_CHAR: |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2765 case T_INT: |
|
14401
0014add32e54
8020121: PPC64: fix build in cppInterpreter after 8019519
goetz
parents:
14400
diff
changeset
|
2766 SET_STACK_INT(ts->earlyret_value().i, 0); |
|
14400
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2767 MORE_STACK(1); |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2768 break; |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2769 case T_LONG: |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2770 SET_STACK_LONG(ts->earlyret_value().j, 1); |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2771 MORE_STACK(2); |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
goetz
parents:
14399
diff
changeset
|
2772 break; |
|
bfd9d884693d
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|
2773 case T_FLOAT: |
|
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|
2774 SET_STACK_FLOAT(ts->earlyret_value().f, 0); |
|
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|
2775 MORE_STACK(1); |
|
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8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
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|
2776 break; |
|
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|
2777 case T_DOUBLE: |
|
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8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
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|
2778 SET_STACK_DOUBLE(ts->earlyret_value().d, 1); |
|
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|
2779 MORE_STACK(2); |
|
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8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
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|
2780 break; |
|
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8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
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|
2781 case T_ARRAY: |
|
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8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
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|
2782 case T_OBJECT: |
|
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8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
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|
2783 SET_STACK_OBJECT(ts->earlyret_oop(), 0); |
|
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|
2784 MORE_STACK(1); |
|
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8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
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|
2785 break; |
|
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8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
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|
2786 } |
|
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|
2787 |
|
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|
2788 ts->clr_earlyret_value(); |
|
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8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
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|
2789 ts->set_earlyret_oop(NULL); |
|
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8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
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|
2790 ts->clr_earlyret_pending(); |
|
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|
2791 |
|
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|
2792 // Fall through to handle_return. |
|
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|
2793 |
|
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|
2794 } // handle_Early_Return |
|
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|
2795 |
|
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|
2796 handle_return: { |
| 0 | 2797 DECACHE_STATE(); |
| 2798 | |
|
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|
2799 bool suppress_error = istate->msg() == popping_frame || istate->msg() == early_return; |
|
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|
2800 bool suppress_exit_event = THREAD->has_pending_exception() || istate->msg() == popping_frame; |
| 0 | 2801 Handle original_exception(THREAD, THREAD->pending_exception()); |
| 2802 Handle illegal_state_oop(THREAD, NULL); | |
| 2803 | |
| 2804 // We'd like a HandleMark here to prevent any subsequent HandleMarkCleaner | |
| 2805 // in any following VM entries from freeing our live handles, but illegal_state_oop | |
| 2806 // isn't really allocated yet and so doesn't become live until later and | |
| 2807 // in unpredicatable places. Instead we must protect the places where we enter the | |
| 2808 // VM. It would be much simpler (and safer) if we could allocate a real handle with | |
| 2809 // a NULL oop in it and then overwrite the oop later as needed. This isn't | |
| 2810 // unfortunately isn't possible. | |
| 2811 | |
| 2812 THREAD->clear_pending_exception(); | |
| 2813 | |
| 2814 // | |
| 2815 // As far as we are concerned we have returned. If we have a pending exception | |
| 2816 // that will be returned as this invocation's result. However if we get any | |
| 2817 // exception(s) while checking monitor state one of those IllegalMonitorStateExceptions | |
| 2818 // will be our final result (i.e. monitor exception trumps a pending exception). | |
| 2819 // | |
| 2820 | |
| 2821 // If we never locked the method (or really passed the point where we would have), | |
| 2822 // there is no need to unlock it (or look for other monitors), since that | |
| 2823 // could not have happened. | |
| 2824 | |
| 2825 if (THREAD->do_not_unlock()) { | |
| 2826 | |
| 2827 // Never locked, reset the flag now because obviously any caller must | |
| 2828 // have passed their point of locking for us to have gotten here. | |
| 2829 | |
| 2830 THREAD->clr_do_not_unlock(); | |
| 2831 } else { | |
| 2832 // At this point we consider that we have returned. We now check that the | |
| 2833 // locks were properly block structured. If we find that they were not | |
| 2834 // used properly we will return with an illegal monitor exception. | |
| 2835 // The exception is checked by the caller not the callee since this | |
| 2836 // checking is considered to be part of the invocation and therefore | |
| 2837 // in the callers scope (JVM spec 8.13). | |
| 2838 // | |
| 2839 // Another weird thing to watch for is if the method was locked | |
| 2840 // recursively and then not exited properly. This means we must | |
| 2841 // examine all the entries in reverse time(and stack) order and | |
| 2842 // unlock as we find them. If we find the method monitor before | |
| 2843 // we are at the initial entry then we should throw an exception. | |
| 2844 // It is not clear the template based interpreter does this | |
| 2845 // correctly | |
| 2846 | |
| 2847 BasicObjectLock* base = istate->monitor_base(); | |
| 2848 BasicObjectLock* end = (BasicObjectLock*) istate->stack_base(); | |
| 2849 bool method_unlock_needed = METHOD->is_synchronized(); | |
| 2850 // We know the initial monitor was used for the method don't check that | |
| 2851 // slot in the loop | |
| 2852 if (method_unlock_needed) base--; | |
| 2853 | |
| 2854 // Check all the monitors to see they are unlocked. Install exception if found to be locked. | |
| 2855 while (end < base) { | |
| 2856 oop lockee = end->obj(); | |
| 2857 if (lockee != NULL) { | |
| 2858 BasicLock* lock = end->lock(); | |
| 2859 markOop header = lock->displaced_header(); | |
| 2860 end->set_obj(NULL); | |
|
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|
2861 |
|
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|
2862 if (!lockee->mark()->has_bias_pattern()) { |
|
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|
2863 // If it isn't recursive we either must swap old header or call the runtime |
|
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|
2864 if (header != NULL) { |
|
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|
2865 if (Atomic::cmpxchg_ptr(header, lockee->mark_addr(), lock) != lock) { |
|
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8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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|
2866 // restore object for the slow case |
|
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8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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|
2867 end->set_obj(lockee); |
|
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8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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|
2868 { |
|
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|
2869 // Prevent any HandleMarkCleaner from freeing our live handles |
|
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|
2870 HandleMark __hm(THREAD); |
|
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|
2871 CALL_VM_NOCHECK(InterpreterRuntime::monitorexit(THREAD, end)); |
|
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|
2872 } |
| 0 | 2873 } |
| 2874 } | |
| 2875 } | |
| 2876 // One error is plenty | |
| 2877 if (illegal_state_oop() == NULL && !suppress_error) { | |
| 2878 { | |
| 2879 // Prevent any HandleMarkCleaner from freeing our live handles | |
| 2880 HandleMark __hm(THREAD); | |
| 2881 CALL_VM_NOCHECK(InterpreterRuntime::throw_illegal_monitor_state_exception(THREAD)); | |
| 2882 } | |
| 2883 assert(THREAD->has_pending_exception(), "Lost our exception!"); | |
| 2884 illegal_state_oop = THREAD->pending_exception(); | |
| 2885 THREAD->clear_pending_exception(); | |
| 2886 } | |
| 2887 } | |
| 2888 end++; | |
| 2889 } | |
| 2890 // Unlock the method if needed | |
| 2891 if (method_unlock_needed) { | |
| 2892 if (base->obj() == NULL) { | |
| 2893 // The method is already unlocked this is not good. | |
| 2894 if (illegal_state_oop() == NULL && !suppress_error) { | |
| 2895 { | |
| 2896 // Prevent any HandleMarkCleaner from freeing our live handles | |
| 2897 HandleMark __hm(THREAD); | |
| 2898 CALL_VM_NOCHECK(InterpreterRuntime::throw_illegal_monitor_state_exception(THREAD)); | |
| 2899 } | |
| 2900 assert(THREAD->has_pending_exception(), "Lost our exception!"); | |
| 2901 illegal_state_oop = THREAD->pending_exception(); | |
| 2902 THREAD->clear_pending_exception(); | |
| 2903 } | |
| 2904 } else { | |
| 2905 // | |
| 2906 // The initial monitor is always used for the method | |
| 2907 // However if that slot is no longer the oop for the method it was unlocked | |
| 2908 // and reused by something that wasn't unlocked! | |
| 2909 // | |
| 2910 // deopt can come in with rcvr dead because c2 knows | |
| 2911 // its value is preserved in the monitor. So we can't use locals[0] at all | |
| 2912 // and must use first monitor slot. | |
| 2913 // | |
| 2914 oop rcvr = base->obj(); | |
| 2915 if (rcvr == NULL) { | |
| 2916 if (!suppress_error) { | |
| 2917 VM_JAVA_ERROR_NO_JUMP(vmSymbols::java_lang_NullPointerException(), ""); | |
| 2918 illegal_state_oop = THREAD->pending_exception(); | |
| 2919 THREAD->clear_pending_exception(); | |
| 2920 } | |
|
14395
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|
2921 } else if (UseHeavyMonitors) { |
|
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|
2922 { |
|
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|
2923 // Prevent any HandleMarkCleaner from freeing our live handles. |
|
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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|
2924 HandleMark __hm(THREAD); |
|
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|
2925 CALL_VM_NOCHECK(InterpreterRuntime::monitorexit(THREAD, base)); |
|
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8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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|
2926 } |
|
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|
2927 if (THREAD->has_pending_exception()) { |
|
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|
2928 if (!suppress_error) illegal_state_oop = THREAD->pending_exception(); |
|
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|
2929 THREAD->clear_pending_exception(); |
|
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|
2930 } |
| 0 | 2931 } else { |
| 2932 BasicLock* lock = base->lock(); | |
| 2933 markOop header = lock->displaced_header(); | |
| 2934 base->set_obj(NULL); | |
|
14395
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|
2935 |
|
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diff
changeset
|
2936 if (!rcvr->mark()->has_bias_pattern()) { |
|
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|
2937 base->set_obj(NULL); |
|
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|
2938 // If it isn't recursive we either must swap old header or call the runtime |
|
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|
2939 if (header != NULL) { |
|
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|
2940 if (Atomic::cmpxchg_ptr(header, rcvr->mark_addr(), lock) != lock) { |
|
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|
2941 // restore object for the slow case |
|
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|
2942 base->set_obj(rcvr); |
|
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|
2943 { |
|
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|
2944 // Prevent any HandleMarkCleaner from freeing our live handles |
|
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|
2945 HandleMark __hm(THREAD); |
|
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|
2946 CALL_VM_NOCHECK(InterpreterRuntime::monitorexit(THREAD, base)); |
|
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|
2947 } |
|
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|
2948 if (THREAD->has_pending_exception()) { |
|
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|
2949 if (!suppress_error) illegal_state_oop = THREAD->pending_exception(); |
|
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|
2950 THREAD->clear_pending_exception(); |
|
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|
2951 } |
| 0 | 2952 } |
| 2953 } | |
| 2954 } | |
| 2955 } | |
| 2956 } | |
| 2957 } | |
| 2958 } | |
|
14395
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|
2959 // Clear the do_not_unlock flag now. |
|
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|
2960 THREAD->clr_do_not_unlock(); |
| 0 | 2961 |
| 2962 // | |
| 2963 // Notify jvmti/jvmdi | |
| 2964 // | |
| 2965 // NOTE: we do not notify a method_exit if we have a pending exception, | |
| 2966 // including an exception we generate for unlocking checks. In the former | |
| 2967 // case, JVMDI has already been notified by our call for the exception handler | |
| 2968 // and in both cases as far as JVMDI is concerned we have already returned. | |
| 2969 // If we notify it again JVMDI will be all confused about how many frames | |
| 2970 // are still on the stack (4340444). | |
| 2971 // | |
| 2972 // NOTE Further! It turns out the the JVMTI spec in fact expects to see | |
| 2973 // method_exit events whenever we leave an activation unless it was done | |
| 2974 // for popframe. This is nothing like jvmdi. However we are passing the | |
| 2975 // tests at the moment (apparently because they are jvmdi based) so rather | |
| 2976 // than change this code and possibly fail tests we will leave it alone | |
| 2977 // (with this note) in anticipation of changing the vm and the tests | |
| 2978 // simultaneously. | |
| 2979 | |
| 2980 | |
| 2981 // | |
| 2982 suppress_exit_event = suppress_exit_event || illegal_state_oop() != NULL; | |
| 2983 | |
| 2984 | |
| 2985 | |
| 2986 #ifdef VM_JVMTI | |
| 2987 if (_jvmti_interp_events) { | |
| 2988 // Whenever JVMTI puts a thread in interp_only_mode, method | |
| 2989 // entry/exit events are sent for that thread to track stack depth. | |
| 2990 if ( !suppress_exit_event && THREAD->is_interp_only_mode() ) { | |
| 2991 { | |
| 2992 // Prevent any HandleMarkCleaner from freeing our live handles | |
| 2993 HandleMark __hm(THREAD); | |
| 2994 CALL_VM_NOCHECK(InterpreterRuntime::post_method_exit(THREAD)); | |
| 2995 } | |
| 2996 } | |
| 2997 } | |
| 2998 #endif /* VM_JVMTI */ | |
| 2999 | |
| 3000 // | |
| 3001 // See if we are returning any exception | |
| 3002 // A pending exception that was pending prior to a possible popping frame | |
| 3003 // overrides the popping frame. | |
| 3004 // | |
| 3005 assert(!suppress_error || suppress_error && illegal_state_oop() == NULL, "Error was not suppressed"); | |
| 3006 if (illegal_state_oop() != NULL || original_exception() != NULL) { | |
| 3007 // inform the frame manager we have no result | |
| 3008 istate->set_msg(throwing_exception); | |
| 3009 if (illegal_state_oop() != NULL) | |
| 3010 THREAD->set_pending_exception(illegal_state_oop(), NULL, 0); | |
| 3011 else | |
| 3012 THREAD->set_pending_exception(original_exception(), NULL, 0); | |
| 3013 UPDATE_PC_AND_RETURN(0); | |
| 3014 } | |
| 3015 | |
| 3016 if (istate->msg() == popping_frame) { | |
| 3017 // Make it simpler on the assembly code and set the message for the frame pop. | |
| 3018 // returns | |
| 3019 if (istate->prev() == NULL) { | |
| 3020 // We must be returning to a deoptimized frame (because popframe only happens between | |
| 3021 // two interpreted frames). We need to save the current arguments in C heap so that | |
| 3022 // the deoptimized frame when it restarts can copy the arguments to its expression | |
| 3023 // stack and re-execute the call. We also have to notify deoptimization that this | |
| 605 | 3024 // has occurred and to pick the preserved args copy them to the deoptimized frame's |
| 0 | 3025 // java expression stack. Yuck. |
| 3026 // | |
| 3027 THREAD->popframe_preserve_args(in_ByteSize(METHOD->size_of_parameters() * wordSize), | |
| 3028 LOCALS_SLOT(METHOD->size_of_parameters() - 1)); | |
| 3029 THREAD->set_popframe_condition_bit(JavaThread::popframe_force_deopt_reexecution_bit); | |
| 3030 } | |
|
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|
3031 } else { |
|
bfd9d884693d
8019519: PPC64 (part 105): C interpreter: implement support for jvmti early return.
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parents:
14399
diff
changeset
|
3032 istate->set_msg(return_from_method); |
| 0 | 3033 } |
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126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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3034 |
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126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
3035 // Normal return |
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126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
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diff
changeset
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3036 // Advance the pc and return to frame manager |
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126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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diff
changeset
|
3037 UPDATE_PC_AND_RETURN(1); |
| 0 | 3038 } /* handle_return: */ |
| 3039 | |
| 3040 // This is really a fatal error return | |
| 3041 | |
| 3042 finish: | |
| 3043 DECACHE_TOS(); | |
| 3044 DECACHE_PC(); | |
| 3045 | |
| 3046 return; | |
| 3047 } | |
| 3048 | |
| 3049 /* | |
| 3050 * All the code following this point is only produced once and is not present | |
| 3051 * in the JVMTI version of the interpreter | |
| 3052 */ | |
| 3053 | |
| 3054 #ifndef VM_JVMTI | |
| 3055 | |
| 3056 // This constructor should only be used to contruct the object to signal | |
| 3057 // interpreter initialization. All other instances should be created by | |
| 3058 // the frame manager. | |
| 3059 BytecodeInterpreter::BytecodeInterpreter(messages msg) { | |
| 3060 if (msg != initialize) ShouldNotReachHere(); | |
| 3061 _msg = msg; | |
| 3062 _self_link = this; | |
| 3063 _prev_link = NULL; | |
| 3064 } | |
| 3065 | |
| 3066 // Inline static functions for Java Stack and Local manipulation | |
| 3067 | |
| 3068 // The implementations are platform dependent. We have to worry about alignment | |
| 3069 // issues on some machines which can change on the same platform depending on | |
| 3070 // whether it is an LP64 machine also. | |
| 3071 address BytecodeInterpreter::stack_slot(intptr_t *tos, int offset) { | |
| 3072 return (address) tos[Interpreter::expr_index_at(-offset)]; | |
| 3073 } | |
| 3074 | |
| 3075 jint BytecodeInterpreter::stack_int(intptr_t *tos, int offset) { | |
| 3076 return *((jint*) &tos[Interpreter::expr_index_at(-offset)]); | |
| 3077 } | |
| 3078 | |
| 3079 jfloat BytecodeInterpreter::stack_float(intptr_t *tos, int offset) { | |
| 3080 return *((jfloat *) &tos[Interpreter::expr_index_at(-offset)]); | |
| 3081 } | |
| 3082 | |
| 3083 oop BytecodeInterpreter::stack_object(intptr_t *tos, int offset) { | |
| 3084 return (oop)tos [Interpreter::expr_index_at(-offset)]; | |
| 3085 } | |
| 3086 | |
| 3087 jdouble BytecodeInterpreter::stack_double(intptr_t *tos, int offset) { | |
| 3088 return ((VMJavaVal64*) &tos[Interpreter::expr_index_at(-offset)])->d; | |
| 3089 } | |
| 3090 | |
| 3091 jlong BytecodeInterpreter::stack_long(intptr_t *tos, int offset) { | |
| 3092 return ((VMJavaVal64 *) &tos[Interpreter::expr_index_at(-offset)])->l; | |
| 3093 } | |
| 3094 | |
| 3095 // only used for value types | |
| 3096 void BytecodeInterpreter::set_stack_slot(intptr_t *tos, address value, | |
| 3097 int offset) { | |
| 3098 *((address *)&tos[Interpreter::expr_index_at(-offset)]) = value; | |
| 3099 } | |
| 3100 | |
| 3101 void BytecodeInterpreter::set_stack_int(intptr_t *tos, int value, | |
| 3102 int offset) { | |
| 3103 *((jint *)&tos[Interpreter::expr_index_at(-offset)]) = value; | |
| 3104 } | |
| 3105 | |
| 3106 void BytecodeInterpreter::set_stack_float(intptr_t *tos, jfloat value, | |
| 3107 int offset) { | |
| 3108 *((jfloat *)&tos[Interpreter::expr_index_at(-offset)]) = value; | |
| 3109 } | |
| 3110 | |
| 3111 void BytecodeInterpreter::set_stack_object(intptr_t *tos, oop value, | |
| 3112 int offset) { | |
| 3113 *((oop *)&tos[Interpreter::expr_index_at(-offset)]) = value; | |
| 3114 } | |
| 3115 | |
| 3116 // needs to be platform dep for the 32 bit platforms. | |
| 3117 void BytecodeInterpreter::set_stack_double(intptr_t *tos, jdouble value, | |
| 3118 int offset) { | |
| 3119 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->d = value; | |
| 3120 } | |
| 3121 | |
| 3122 void BytecodeInterpreter::set_stack_double_from_addr(intptr_t *tos, | |
| 3123 address addr, int offset) { | |
| 3124 (((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->d = | |
| 3125 ((VMJavaVal64*)addr)->d); | |
| 3126 } | |
| 3127 | |
| 3128 void BytecodeInterpreter::set_stack_long(intptr_t *tos, jlong value, | |
| 3129 int offset) { | |
| 3130 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset+1)])->l = 0xdeedbeeb; | |
| 3131 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->l = value; | |
| 3132 } | |
| 3133 | |
| 3134 void BytecodeInterpreter::set_stack_long_from_addr(intptr_t *tos, | |
| 3135 address addr, int offset) { | |
| 3136 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset+1)])->l = 0xdeedbeeb; | |
| 3137 ((VMJavaVal64*)&tos[Interpreter::expr_index_at(-offset)])->l = | |
| 3138 ((VMJavaVal64*)addr)->l; | |
| 3139 } | |
| 3140 | |
| 3141 // Locals | |
| 3142 | |
| 3143 address BytecodeInterpreter::locals_slot(intptr_t* locals, int offset) { | |
| 3144 return (address)locals[Interpreter::local_index_at(-offset)]; | |
| 3145 } | |
| 3146 jint BytecodeInterpreter::locals_int(intptr_t* locals, int offset) { | |
| 3147 return (jint)locals[Interpreter::local_index_at(-offset)]; | |
| 3148 } | |
| 3149 jfloat BytecodeInterpreter::locals_float(intptr_t* locals, int offset) { | |
| 3150 return (jfloat)locals[Interpreter::local_index_at(-offset)]; | |
| 3151 } | |
| 3152 oop BytecodeInterpreter::locals_object(intptr_t* locals, int offset) { | |
| 3153 return (oop)locals[Interpreter::local_index_at(-offset)]; | |
| 3154 } | |
| 3155 jdouble BytecodeInterpreter::locals_double(intptr_t* locals, int offset) { | |
| 3156 return ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->d; | |
| 3157 } | |
| 3158 jlong BytecodeInterpreter::locals_long(intptr_t* locals, int offset) { | |
| 3159 return ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->l; | |
| 3160 } | |
| 3161 | |
| 3162 // Returns the address of locals value. | |
| 3163 address BytecodeInterpreter::locals_long_at(intptr_t* locals, int offset) { | |
| 3164 return ((address)&locals[Interpreter::local_index_at(-(offset+1))]); | |
| 3165 } | |
| 3166 address BytecodeInterpreter::locals_double_at(intptr_t* locals, int offset) { | |
| 3167 return ((address)&locals[Interpreter::local_index_at(-(offset+1))]); | |
| 3168 } | |
| 3169 | |
| 3170 // Used for local value or returnAddress | |
| 3171 void BytecodeInterpreter::set_locals_slot(intptr_t *locals, | |
| 3172 address value, int offset) { | |
| 3173 *((address*)&locals[Interpreter::local_index_at(-offset)]) = value; | |
| 3174 } | |
| 3175 void BytecodeInterpreter::set_locals_int(intptr_t *locals, | |
| 3176 jint value, int offset) { | |
| 3177 *((jint *)&locals[Interpreter::local_index_at(-offset)]) = value; | |
| 3178 } | |
| 3179 void BytecodeInterpreter::set_locals_float(intptr_t *locals, | |
| 3180 jfloat value, int offset) { | |
| 3181 *((jfloat *)&locals[Interpreter::local_index_at(-offset)]) = value; | |
| 3182 } | |
| 3183 void BytecodeInterpreter::set_locals_object(intptr_t *locals, | |
| 3184 oop value, int offset) { | |
| 3185 *((oop *)&locals[Interpreter::local_index_at(-offset)]) = value; | |
| 3186 } | |
| 3187 void BytecodeInterpreter::set_locals_double(intptr_t *locals, | |
| 3188 jdouble value, int offset) { | |
| 3189 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->d = value; | |
| 3190 } | |
| 3191 void BytecodeInterpreter::set_locals_long(intptr_t *locals, | |
| 3192 jlong value, int offset) { | |
| 3193 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->l = value; | |
| 3194 } | |
| 3195 void BytecodeInterpreter::set_locals_double_from_addr(intptr_t *locals, | |
| 3196 address addr, int offset) { | |
| 3197 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->d = ((VMJavaVal64*)addr)->d; | |
| 3198 } | |
| 3199 void BytecodeInterpreter::set_locals_long_from_addr(intptr_t *locals, | |
| 3200 address addr, int offset) { | |
| 3201 ((VMJavaVal64*)&locals[Interpreter::local_index_at(-(offset+1))])->l = ((VMJavaVal64*)addr)->l; | |
| 3202 } | |
| 3203 | |
| 3204 void BytecodeInterpreter::astore(intptr_t* tos, int stack_offset, | |
| 3205 intptr_t* locals, int locals_offset) { | |
| 3206 intptr_t value = tos[Interpreter::expr_index_at(-stack_offset)]; | |
| 3207 locals[Interpreter::local_index_at(-locals_offset)] = value; | |
| 3208 } | |
| 3209 | |
| 3210 | |
| 3211 void BytecodeInterpreter::copy_stack_slot(intptr_t *tos, int from_offset, | |
| 3212 int to_offset) { | |
| 3213 tos[Interpreter::expr_index_at(-to_offset)] = | |
| 3214 (intptr_t)tos[Interpreter::expr_index_at(-from_offset)]; | |
| 3215 } | |
| 3216 | |
| 3217 void BytecodeInterpreter::dup(intptr_t *tos) { | |
| 3218 copy_stack_slot(tos, -1, 0); | |
| 3219 } | |
| 3220 void BytecodeInterpreter::dup2(intptr_t *tos) { | |
| 3221 copy_stack_slot(tos, -2, 0); | |
| 3222 copy_stack_slot(tos, -1, 1); | |
| 3223 } | |
| 3224 | |
| 3225 void BytecodeInterpreter::dup_x1(intptr_t *tos) { | |
| 3226 /* insert top word two down */ | |
| 3227 copy_stack_slot(tos, -1, 0); | |
| 3228 copy_stack_slot(tos, -2, -1); | |
| 3229 copy_stack_slot(tos, 0, -2); | |
| 3230 } | |
| 3231 | |
| 3232 void BytecodeInterpreter::dup_x2(intptr_t *tos) { | |
| 3233 /* insert top word three down */ | |
| 3234 copy_stack_slot(tos, -1, 0); | |
| 3235 copy_stack_slot(tos, -2, -1); | |
| 3236 copy_stack_slot(tos, -3, -2); | |
| 3237 copy_stack_slot(tos, 0, -3); | |
| 3238 } | |
| 3239 void BytecodeInterpreter::dup2_x1(intptr_t *tos) { | |
| 3240 /* insert top 2 slots three down */ | |
| 3241 copy_stack_slot(tos, -1, 1); | |
| 3242 copy_stack_slot(tos, -2, 0); | |
| 3243 copy_stack_slot(tos, -3, -1); | |
| 3244 copy_stack_slot(tos, 1, -2); | |
| 3245 copy_stack_slot(tos, 0, -3); | |
| 3246 } | |
| 3247 void BytecodeInterpreter::dup2_x2(intptr_t *tos) { | |
| 3248 /* insert top 2 slots four down */ | |
| 3249 copy_stack_slot(tos, -1, 1); | |
| 3250 copy_stack_slot(tos, -2, 0); | |
| 3251 copy_stack_slot(tos, -3, -1); | |
| 3252 copy_stack_slot(tos, -4, -2); | |
| 3253 copy_stack_slot(tos, 1, -3); | |
| 3254 copy_stack_slot(tos, 0, -4); | |
| 3255 } | |
| 3256 | |
| 3257 | |
| 3258 void BytecodeInterpreter::swap(intptr_t *tos) { | |
| 3259 // swap top two elements | |
| 3260 intptr_t val = tos[Interpreter::expr_index_at(1)]; | |
| 3261 // Copy -2 entry to -1 | |
| 3262 copy_stack_slot(tos, -2, -1); | |
| 3263 // Store saved -1 entry into -2 | |
| 3264 tos[Interpreter::expr_index_at(2)] = val; | |
| 3265 } | |
| 3266 // -------------------------------------------------------------------------------- | |
| 3267 // Non-product code | |
| 3268 #ifndef PRODUCT | |
| 3269 | |
| 3270 const char* BytecodeInterpreter::C_msg(BytecodeInterpreter::messages msg) { | |
| 3271 switch (msg) { | |
| 3272 case BytecodeInterpreter::no_request: return("no_request"); | |
| 3273 case BytecodeInterpreter::initialize: return("initialize"); | |
| 3274 // status message to C++ interpreter | |
| 3275 case BytecodeInterpreter::method_entry: return("method_entry"); | |
| 3276 case BytecodeInterpreter::method_resume: return("method_resume"); | |
| 3277 case BytecodeInterpreter::got_monitors: return("got_monitors"); | |
| 3278 case BytecodeInterpreter::rethrow_exception: return("rethrow_exception"); | |
| 3279 // requests to frame manager from C++ interpreter | |
| 3280 case BytecodeInterpreter::call_method: return("call_method"); | |
| 3281 case BytecodeInterpreter::return_from_method: return("return_from_method"); | |
| 3282 case BytecodeInterpreter::more_monitors: return("more_monitors"); | |
| 3283 case BytecodeInterpreter::throwing_exception: return("throwing_exception"); | |
| 3284 case BytecodeInterpreter::popping_frame: return("popping_frame"); | |
| 3285 case BytecodeInterpreter::do_osr: return("do_osr"); | |
| 3286 // deopt | |
| 3287 case BytecodeInterpreter::deopt_resume: return("deopt_resume"); | |
| 3288 case BytecodeInterpreter::deopt_resume2: return("deopt_resume2"); | |
| 3289 default: return("BAD MSG"); | |
| 3290 } | |
| 3291 } | |
| 3292 void | |
| 3293 BytecodeInterpreter::print() { | |
| 3294 tty->print_cr("thread: " INTPTR_FORMAT, (uintptr_t) this->_thread); | |
| 3295 tty->print_cr("bcp: " INTPTR_FORMAT, (uintptr_t) this->_bcp); | |
| 3296 tty->print_cr("locals: " INTPTR_FORMAT, (uintptr_t) this->_locals); | |
| 3297 tty->print_cr("constants: " INTPTR_FORMAT, (uintptr_t) this->_constants); | |
| 3298 { | |
| 3299 ResourceMark rm; | |
| 3300 char *method_name = _method->name_and_sig_as_C_string(); | |
| 3301 tty->print_cr("method: " INTPTR_FORMAT "[ %s ]", (uintptr_t) this->_method, method_name); | |
| 3302 } | |
| 3303 tty->print_cr("mdx: " INTPTR_FORMAT, (uintptr_t) this->_mdx); | |
| 3304 tty->print_cr("stack: " INTPTR_FORMAT, (uintptr_t) this->_stack); | |
| 3305 tty->print_cr("msg: %s", C_msg(this->_msg)); | |
| 3306 tty->print_cr("result_to_call._callee: " INTPTR_FORMAT, (uintptr_t) this->_result._to_call._callee); | |
| 3307 tty->print_cr("result_to_call._callee_entry_point: " INTPTR_FORMAT, (uintptr_t) this->_result._to_call._callee_entry_point); | |
| 3308 tty->print_cr("result_to_call._bcp_advance: %d ", this->_result._to_call._bcp_advance); | |
| 3309 tty->print_cr("osr._osr_buf: " INTPTR_FORMAT, (uintptr_t) this->_result._osr._osr_buf); | |
| 3310 tty->print_cr("osr._osr_entry: " INTPTR_FORMAT, (uintptr_t) this->_result._osr._osr_entry); | |
| 3311 tty->print_cr("prev_link: " INTPTR_FORMAT, (uintptr_t) this->_prev_link); | |
| 3312 tty->print_cr("native_mirror: " INTPTR_FORMAT, (uintptr_t) this->_oop_temp); | |
| 3313 tty->print_cr("stack_base: " INTPTR_FORMAT, (uintptr_t) this->_stack_base); | |
| 3314 tty->print_cr("stack_limit: " INTPTR_FORMAT, (uintptr_t) this->_stack_limit); | |
| 3315 tty->print_cr("monitor_base: " INTPTR_FORMAT, (uintptr_t) this->_monitor_base); | |
| 3316 #ifdef SPARC | |
| 3317 tty->print_cr("last_Java_pc: " INTPTR_FORMAT, (uintptr_t) this->_last_Java_pc); | |
| 3318 tty->print_cr("frame_bottom: " INTPTR_FORMAT, (uintptr_t) this->_frame_bottom); | |
| 3319 tty->print_cr("&native_fresult: " INTPTR_FORMAT, (uintptr_t) &this->_native_fresult); | |
| 3320 tty->print_cr("native_lresult: " INTPTR_FORMAT, (uintptr_t) this->_native_lresult); | |
| 3321 #endif | |
| 7994 | 3322 #if !defined(ZERO) |
| 0 | 3323 tty->print_cr("last_Java_fp: " INTPTR_FORMAT, (uintptr_t) this->_last_Java_fp); |
| 7994 | 3324 #endif // !ZERO |
| 0 | 3325 tty->print_cr("self_link: " INTPTR_FORMAT, (uintptr_t) this->_self_link); |
| 3326 } | |
| 3327 | |
| 3328 extern "C" { | |
|
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48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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parents:
10393
diff
changeset
|
3329 void PI(uintptr_t arg) { |
|
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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parents:
10393
diff
changeset
|
3330 ((BytecodeInterpreter*)arg)->print(); |
|
48d3d0eb193b
8017317: PPC64 (part 7): cppInterpreter: implement support for biased locking
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diff
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3331 } |
| 0 | 3332 } |
| 3333 #endif // PRODUCT | |
| 3334 | |
| 3335 #endif // JVMTI | |
| 3336 #endif // CC_INTERP |