Mercurial > hg > graal-compiler
annotate src/cpu/x86/vm/templateInterpreter_x86_64.cpp @ 4743:dca455dea3a7
7116216: StackOverflow GC crash
Summary: GC crash for explicit stack overflow checks after a C2I transition.
Reviewed-by: coleenp, never
Contributed-by: yang02.wang@sap.com, bertrand.delsart@oracle.com
| author | bdelsart |
|---|---|
| date | Tue, 20 Dec 2011 12:33:05 +0100 |
| parents | b20d64f83668 |
| children | 22cee0ee8927 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "asm/assembler.hpp" | |
| 27 #include "interpreter/bytecodeHistogram.hpp" | |
| 28 #include "interpreter/interpreter.hpp" | |
| 29 #include "interpreter/interpreterGenerator.hpp" | |
| 30 #include "interpreter/interpreterRuntime.hpp" | |
| 31 #include "interpreter/templateTable.hpp" | |
| 32 #include "oops/arrayOop.hpp" | |
| 33 #include "oops/methodDataOop.hpp" | |
| 34 #include "oops/methodOop.hpp" | |
| 35 #include "oops/oop.inline.hpp" | |
| 36 #include "prims/jvmtiExport.hpp" | |
| 37 #include "prims/jvmtiThreadState.hpp" | |
| 38 #include "runtime/arguments.hpp" | |
| 39 #include "runtime/deoptimization.hpp" | |
| 40 #include "runtime/frame.inline.hpp" | |
| 41 #include "runtime/sharedRuntime.hpp" | |
| 42 #include "runtime/stubRoutines.hpp" | |
| 43 #include "runtime/synchronizer.hpp" | |
| 44 #include "runtime/timer.hpp" | |
| 45 #include "runtime/vframeArray.hpp" | |
| 46 #include "utilities/debug.hpp" | |
| 0 | 47 |
| 48 #define __ _masm-> | |
| 49 | |
| 304 | 50 #ifndef CC_INTERP |
| 51 | |
| 0 | 52 const int method_offset = frame::interpreter_frame_method_offset * wordSize; |
| 53 const int bci_offset = frame::interpreter_frame_bcx_offset * wordSize; | |
| 54 const int locals_offset = frame::interpreter_frame_locals_offset * wordSize; | |
| 55 | |
| 56 //----------------------------------------------------------------------------- | |
| 57 | |
| 58 address TemplateInterpreterGenerator::generate_StackOverflowError_handler() { | |
| 59 address entry = __ pc(); | |
| 60 | |
| 61 #ifdef ASSERT | |
| 62 { | |
| 63 Label L; | |
| 304 | 64 __ lea(rax, Address(rbp, |
| 65 frame::interpreter_frame_monitor_block_top_offset * | |
| 66 wordSize)); | |
| 67 __ cmpptr(rax, rsp); // rax = maximal rsp for current rbp (stack | |
| 68 // grows negative) | |
| 0 | 69 __ jcc(Assembler::aboveEqual, L); // check if frame is complete |
| 70 __ stop ("interpreter frame not set up"); | |
| 71 __ bind(L); | |
| 72 } | |
| 73 #endif // ASSERT | |
| 74 // Restore bcp under the assumption that the current frame is still | |
| 75 // interpreted | |
| 76 __ restore_bcp(); | |
| 77 | |
| 78 // expression stack must be empty before entering the VM if an | |
| 79 // exception happened | |
| 80 __ empty_expression_stack(); | |
| 81 // throw exception | |
| 82 __ call_VM(noreg, | |
| 83 CAST_FROM_FN_PTR(address, | |
| 84 InterpreterRuntime::throw_StackOverflowError)); | |
| 85 return entry; | |
| 86 } | |
| 87 | |
| 88 address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler( | |
| 89 const char* name) { | |
| 90 address entry = __ pc(); | |
| 91 // expression stack must be empty before entering the VM if an | |
| 92 // exception happened | |
| 93 __ empty_expression_stack(); | |
| 94 // setup parameters | |
| 95 // ??? convention: expect aberrant index in register ebx | |
| 96 __ lea(c_rarg1, ExternalAddress((address)name)); | |
| 97 __ call_VM(noreg, | |
| 98 CAST_FROM_FN_PTR(address, | |
| 99 InterpreterRuntime:: | |
| 100 throw_ArrayIndexOutOfBoundsException), | |
| 101 c_rarg1, rbx); | |
| 102 return entry; | |
| 103 } | |
| 104 | |
| 105 address TemplateInterpreterGenerator::generate_ClassCastException_handler() { | |
| 106 address entry = __ pc(); | |
| 107 | |
| 108 // object is at TOS | |
| 304 | 109 __ pop(c_rarg1); |
| 0 | 110 |
| 111 // expression stack must be empty before entering the VM if an | |
| 112 // exception happened | |
| 113 __ empty_expression_stack(); | |
| 114 | |
| 115 __ call_VM(noreg, | |
| 116 CAST_FROM_FN_PTR(address, | |
| 117 InterpreterRuntime:: | |
| 118 throw_ClassCastException), | |
| 119 c_rarg1); | |
| 120 return entry; | |
| 121 } | |
| 122 | |
| 123 address TemplateInterpreterGenerator::generate_exception_handler_common( | |
| 124 const char* name, const char* message, bool pass_oop) { | |
| 125 assert(!pass_oop || message == NULL, "either oop or message but not both"); | |
| 126 address entry = __ pc(); | |
| 127 if (pass_oop) { | |
| 128 // object is at TOS | |
| 304 | 129 __ pop(c_rarg2); |
| 0 | 130 } |
| 131 // expression stack must be empty before entering the VM if an | |
| 132 // exception happened | |
| 133 __ empty_expression_stack(); | |
| 134 // setup parameters | |
| 135 __ lea(c_rarg1, ExternalAddress((address)name)); | |
| 136 if (pass_oop) { | |
| 137 __ call_VM(rax, CAST_FROM_FN_PTR(address, | |
| 138 InterpreterRuntime:: | |
| 139 create_klass_exception), | |
| 140 c_rarg1, c_rarg2); | |
| 141 } else { | |
| 142 // kind of lame ExternalAddress can't take NULL because | |
| 143 // external_word_Relocation will assert. | |
| 144 if (message != NULL) { | |
| 145 __ lea(c_rarg2, ExternalAddress((address)message)); | |
| 146 } else { | |
| 147 __ movptr(c_rarg2, NULL_WORD); | |
| 148 } | |
| 149 __ call_VM(rax, | |
| 150 CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), | |
| 151 c_rarg1, c_rarg2); | |
| 152 } | |
| 153 // throw exception | |
| 154 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
| 155 return entry; | |
| 156 } | |
| 157 | |
| 158 | |
| 159 address TemplateInterpreterGenerator::generate_continuation_for(TosState state) { | |
| 160 address entry = __ pc(); | |
| 161 // NULL last_sp until next java call | |
| 304 | 162 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
| 0 | 163 __ dispatch_next(state); |
| 164 return entry; | |
| 165 } | |
| 166 | |
| 167 | |
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168 address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step) { |
| 0 | 169 address entry = __ pc(); |
| 170 | |
| 171 // Restore stack bottom in case i2c adjusted stack | |
| 304 | 172 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
| 0 | 173 // and NULL it as marker that esp is now tos until next java call |
| 304 | 174 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
| 0 | 175 |
| 176 __ restore_bcp(); | |
| 177 __ restore_locals(); | |
| 304 | 178 |
| 1108 | 179 Label L_got_cache, L_giant_index; |
| 180 if (EnableInvokeDynamic) { | |
| 181 __ cmpb(Address(r13, 0), Bytecodes::_invokedynamic); | |
| 182 __ jcc(Assembler::equal, L_giant_index); | |
| 183 } | |
| 1565 | 184 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u2)); |
| 1108 | 185 __ bind(L_got_cache); |
| 0 | 186 __ movl(rbx, Address(rbx, rcx, |
| 1108 | 187 Address::times_ptr, |
| 0 | 188 in_bytes(constantPoolCacheOopDesc::base_offset()) + |
| 189 3 * wordSize)); | |
| 190 __ andl(rbx, 0xFF); | |
| 304 | 191 __ lea(rsp, Address(rsp, rbx, Address::times_8)); |
| 0 | 192 __ dispatch_next(state, step); |
| 1108 | 193 |
| 194 // out of the main line of code... | |
| 195 if (EnableInvokeDynamic) { | |
| 196 __ bind(L_giant_index); | |
| 1565 | 197 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u4)); |
| 1108 | 198 __ jmp(L_got_cache); |
| 199 } | |
| 200 | |
| 0 | 201 return entry; |
| 202 } | |
| 203 | |
| 204 | |
| 205 address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, | |
| 206 int step) { | |
| 207 address entry = __ pc(); | |
| 208 // NULL last_sp until next java call | |
| 304 | 209 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
| 0 | 210 __ restore_bcp(); |
| 211 __ restore_locals(); | |
| 212 // handle exceptions | |
| 213 { | |
| 214 Label L; | |
| 304 | 215 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
| 0 | 216 __ jcc(Assembler::zero, L); |
| 217 __ call_VM(noreg, | |
| 218 CAST_FROM_FN_PTR(address, | |
| 219 InterpreterRuntime::throw_pending_exception)); | |
| 220 __ should_not_reach_here(); | |
| 221 __ bind(L); | |
| 222 } | |
| 223 __ dispatch_next(state, step); | |
| 224 return entry; | |
| 225 } | |
| 226 | |
| 227 int AbstractInterpreter::BasicType_as_index(BasicType type) { | |
| 228 int i = 0; | |
| 229 switch (type) { | |
| 230 case T_BOOLEAN: i = 0; break; | |
| 231 case T_CHAR : i = 1; break; | |
| 232 case T_BYTE : i = 2; break; | |
| 233 case T_SHORT : i = 3; break; | |
| 234 case T_INT : i = 4; break; | |
| 235 case T_LONG : i = 5; break; | |
| 236 case T_VOID : i = 6; break; | |
| 237 case T_FLOAT : i = 7; break; | |
| 238 case T_DOUBLE : i = 8; break; | |
| 239 case T_OBJECT : i = 9; break; | |
| 240 case T_ARRAY : i = 9; break; | |
| 241 default : ShouldNotReachHere(); | |
| 242 } | |
| 243 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, | |
| 244 "index out of bounds"); | |
| 245 return i; | |
| 246 } | |
| 247 | |
| 248 | |
| 249 address TemplateInterpreterGenerator::generate_result_handler_for( | |
| 250 BasicType type) { | |
| 251 address entry = __ pc(); | |
| 252 switch (type) { | |
| 253 case T_BOOLEAN: __ c2bool(rax); break; | |
| 254 case T_CHAR : __ movzwl(rax, rax); break; | |
| 255 case T_BYTE : __ sign_extend_byte(rax); break; | |
| 256 case T_SHORT : __ sign_extend_short(rax); break; | |
| 257 case T_INT : /* nothing to do */ break; | |
| 258 case T_LONG : /* nothing to do */ break; | |
| 259 case T_VOID : /* nothing to do */ break; | |
| 260 case T_FLOAT : /* nothing to do */ break; | |
| 261 case T_DOUBLE : /* nothing to do */ break; | |
| 262 case T_OBJECT : | |
| 263 // retrieve result from frame | |
| 304 | 264 __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); |
| 0 | 265 // and verify it |
| 266 __ verify_oop(rax); | |
| 267 break; | |
| 268 default : ShouldNotReachHere(); | |
| 269 } | |
| 270 __ ret(0); // return from result handler | |
| 271 return entry; | |
| 272 } | |
| 273 | |
| 274 address TemplateInterpreterGenerator::generate_safept_entry_for( | |
| 275 TosState state, | |
| 276 address runtime_entry) { | |
| 277 address entry = __ pc(); | |
| 278 __ push(state); | |
| 279 __ call_VM(noreg, runtime_entry); | |
| 280 __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); | |
| 281 return entry; | |
| 282 } | |
| 283 | |
| 284 | |
| 285 | |
| 286 // Helpers for commoning out cases in the various type of method entries. | |
| 287 // | |
| 288 | |
| 289 | |
| 290 // increment invocation count & check for overflow | |
| 291 // | |
| 292 // Note: checking for negative value instead of overflow | |
| 293 // so we have a 'sticky' overflow test | |
| 294 // | |
| 295 // rbx: method | |
| 296 // ecx: invocation counter | |
| 297 // | |
| 298 void InterpreterGenerator::generate_counter_incr( | |
| 299 Label* overflow, | |
| 300 Label* profile_method, | |
| 301 Label* profile_method_continue) { | |
| 1783 | 302 const Address invocation_counter(rbx, in_bytes(methodOopDesc::invocation_counter_offset()) + |
| 303 in_bytes(InvocationCounter::counter_offset())); | |
| 304 // Note: In tiered we increment either counters in methodOop or in MDO depending if we're profiling or not. | |
| 305 if (TieredCompilation) { | |
| 306 int increment = InvocationCounter::count_increment; | |
| 307 int mask = ((1 << Tier0InvokeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
| 308 Label no_mdo, done; | |
| 309 if (ProfileInterpreter) { | |
| 310 // Are we profiling? | |
| 311 __ movptr(rax, Address(rbx, methodOopDesc::method_data_offset())); | |
| 312 __ testptr(rax, rax); | |
| 313 __ jccb(Assembler::zero, no_mdo); | |
| 314 // Increment counter in the MDO | |
| 315 const Address mdo_invocation_counter(rax, in_bytes(methodDataOopDesc::invocation_counter_offset()) + | |
| 316 in_bytes(InvocationCounter::counter_offset())); | |
| 317 __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rcx, false, Assembler::zero, overflow); | |
| 318 __ jmpb(done); | |
| 319 } | |
| 320 __ bind(no_mdo); | |
| 321 // Increment counter in methodOop (we don't need to load it, it's in ecx). | |
| 322 __ increment_mask_and_jump(invocation_counter, increment, mask, rcx, true, Assembler::zero, overflow); | |
| 323 __ bind(done); | |
| 324 } else { | |
| 325 const Address backedge_counter(rbx, | |
| 326 methodOopDesc::backedge_counter_offset() + | |
| 0 | 327 InvocationCounter::counter_offset()); |
| 328 | |
| 1783 | 329 if (ProfileInterpreter) { // %%% Merge this into methodDataOop |
| 330 __ incrementl(Address(rbx, | |
| 331 methodOopDesc::interpreter_invocation_counter_offset())); | |
| 332 } | |
| 333 // Update standard invocation counters | |
| 334 __ movl(rax, backedge_counter); // load backedge counter | |
| 0 | 335 |
| 1783 | 336 __ incrementl(rcx, InvocationCounter::count_increment); |
| 337 __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits | |
| 0 | 338 |
| 1783 | 339 __ movl(invocation_counter, rcx); // save invocation count |
| 340 __ addl(rcx, rax); // add both counters | |
| 0 | 341 |
| 1783 | 342 // profile_method is non-null only for interpreted method so |
| 343 // profile_method != NULL == !native_call | |
| 344 | |
| 345 if (ProfileInterpreter && profile_method != NULL) { | |
| 346 // Test to see if we should create a method data oop | |
| 347 __ cmp32(rcx, ExternalAddress((address)&InvocationCounter::InterpreterProfileLimit)); | |
| 348 __ jcc(Assembler::less, *profile_method_continue); | |
| 0 | 349 |
| 1783 | 350 // if no method data exists, go to profile_method |
| 351 __ test_method_data_pointer(rax, *profile_method); | |
| 352 } | |
| 353 | |
| 354 __ cmp32(rcx, ExternalAddress((address)&InvocationCounter::InterpreterInvocationLimit)); | |
| 355 __ jcc(Assembler::aboveEqual, *overflow); | |
| 0 | 356 } |
| 357 } | |
| 358 | |
| 359 void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { | |
| 360 | |
| 361 // Asm interpreter on entry | |
| 362 // r14 - locals | |
| 363 // r13 - bcp | |
| 364 // rbx - method | |
| 365 // edx - cpool --- DOES NOT APPEAR TO BE TRUE | |
| 366 // rbp - interpreter frame | |
| 367 | |
| 368 // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] | |
| 369 // Everything as it was on entry | |
| 370 // rdx is not restored. Doesn't appear to really be set. | |
| 371 | |
| 372 const Address size_of_parameters(rbx, | |
| 373 methodOopDesc::size_of_parameters_offset()); | |
| 374 | |
| 375 // InterpreterRuntime::frequency_counter_overflow takes two | |
| 376 // arguments, the first (thread) is passed by call_VM, the second | |
| 377 // indicates if the counter overflow occurs at a backwards branch | |
| 378 // (NULL bcp). We pass zero for it. The call returns the address | |
| 379 // of the verified entry point for the method or NULL if the | |
| 380 // compilation did not complete (either went background or bailed | |
| 381 // out). | |
| 382 __ movl(c_rarg1, 0); | |
| 383 __ call_VM(noreg, | |
| 384 CAST_FROM_FN_PTR(address, | |
| 385 InterpreterRuntime::frequency_counter_overflow), | |
| 386 c_rarg1); | |
| 387 | |
| 304 | 388 __ movptr(rbx, Address(rbp, method_offset)); // restore methodOop |
| 0 | 389 // Preserve invariant that r13/r14 contain bcp/locals of sender frame |
| 390 // and jump to the interpreted entry. | |
| 391 __ jmp(*do_continue, relocInfo::none); | |
| 392 } | |
| 393 | |
| 394 // See if we've got enough room on the stack for locals plus overhead. | |
| 395 // The expression stack grows down incrementally, so the normal guard | |
| 396 // page mechanism will work for that. | |
| 397 // | |
| 398 // NOTE: Since the additional locals are also always pushed (wasn't | |
| 399 // obvious in generate_method_entry) so the guard should work for them | |
| 400 // too. | |
| 401 // | |
| 402 // Args: | |
| 403 // rdx: number of additional locals this frame needs (what we must check) | |
| 404 // rbx: methodOop | |
| 405 // | |
| 406 // Kills: | |
| 407 // rax | |
| 408 void InterpreterGenerator::generate_stack_overflow_check(void) { | |
| 409 | |
| 410 // monitor entry size: see picture of stack set | |
| 411 // (generate_method_entry) and frame_amd64.hpp | |
| 412 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 413 | |
| 414 // total overhead size: entry_size + (saved rbp through expr stack | |
| 415 // bottom). be sure to change this if you add/subtract anything | |
| 416 // to/from the overhead area | |
| 417 const int overhead_size = | |
| 418 -(frame::interpreter_frame_initial_sp_offset * wordSize) + entry_size; | |
| 419 | |
| 420 const int page_size = os::vm_page_size(); | |
| 421 | |
| 422 Label after_frame_check; | |
| 423 | |
| 424 // see if the frame is greater than one page in size. If so, | |
| 425 // then we need to verify there is enough stack space remaining | |
| 426 // for the additional locals. | |
| 1506 | 427 __ cmpl(rdx, (page_size - overhead_size) / Interpreter::stackElementSize); |
| 0 | 428 __ jcc(Assembler::belowEqual, after_frame_check); |
| 429 | |
| 430 // compute rsp as if this were going to be the last frame on | |
| 431 // the stack before the red zone | |
| 432 | |
| 433 const Address stack_base(r15_thread, Thread::stack_base_offset()); | |
| 434 const Address stack_size(r15_thread, Thread::stack_size_offset()); | |
| 435 | |
| 436 // locals + overhead, in bytes | |
| 304 | 437 __ mov(rax, rdx); |
| 1506 | 438 __ shlptr(rax, Interpreter::logStackElementSize); // 2 slots per parameter. |
| 304 | 439 __ addptr(rax, overhead_size); |
| 0 | 440 |
| 441 #ifdef ASSERT | |
| 442 Label stack_base_okay, stack_size_okay; | |
| 443 // verify that thread stack base is non-zero | |
| 304 | 444 __ cmpptr(stack_base, (int32_t)NULL_WORD); |
| 0 | 445 __ jcc(Assembler::notEqual, stack_base_okay); |
| 446 __ stop("stack base is zero"); | |
| 447 __ bind(stack_base_okay); | |
| 448 // verify that thread stack size is non-zero | |
| 304 | 449 __ cmpptr(stack_size, 0); |
| 0 | 450 __ jcc(Assembler::notEqual, stack_size_okay); |
| 451 __ stop("stack size is zero"); | |
| 452 __ bind(stack_size_okay); | |
| 453 #endif | |
| 454 | |
| 455 // Add stack base to locals and subtract stack size | |
| 304 | 456 __ addptr(rax, stack_base); |
| 457 __ subptr(rax, stack_size); | |
| 0 | 458 |
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459 // Use the maximum number of pages we might bang. |
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460 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : |
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461 (StackRedPages+StackYellowPages); |
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462 |
| 0 | 463 // add in the red and yellow zone sizes |
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464 __ addptr(rax, max_pages * page_size); |
| 0 | 465 |
| 466 // check against the current stack bottom | |
| 304 | 467 __ cmpptr(rsp, rax); |
| 0 | 468 __ jcc(Assembler::above, after_frame_check); |
| 469 | |
| 4743 | 470 // Restore sender's sp as SP. This is necessary if the sender's |
| 471 // frame is an extended compiled frame (see gen_c2i_adapter()) | |
| 472 // and safer anyway in case of JSR292 adaptations. | |
| 473 | |
| 474 __ pop(rax); // return address must be moved if SP is changed | |
| 475 __ mov(rsp, r13); | |
| 476 __ push(rax); | |
| 477 | |
| 478 // Note: the restored frame is not necessarily interpreted. | |
| 479 // Use the shared runtime version of the StackOverflowError. | |
| 480 assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated"); | |
| 481 __ jump(ExternalAddress(StubRoutines::throw_StackOverflowError_entry())); | |
| 0 | 482 |
| 483 // all done with frame size check | |
| 484 __ bind(after_frame_check); | |
| 485 } | |
| 486 | |
| 487 // Allocate monitor and lock method (asm interpreter) | |
| 488 // | |
| 489 // Args: | |
| 490 // rbx: methodOop | |
| 491 // r14: locals | |
| 492 // | |
| 493 // Kills: | |
| 494 // rax | |
| 495 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, ...(param regs) | |
| 496 // rscratch1, rscratch2 (scratch regs) | |
| 497 void InterpreterGenerator::lock_method(void) { | |
| 498 // synchronize method | |
| 499 const Address access_flags(rbx, methodOopDesc::access_flags_offset()); | |
| 500 const Address monitor_block_top( | |
| 501 rbp, | |
| 502 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 503 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 504 | |
| 505 #ifdef ASSERT | |
| 506 { | |
| 507 Label L; | |
| 508 __ movl(rax, access_flags); | |
| 509 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 510 __ jcc(Assembler::notZero, L); | |
| 511 __ stop("method doesn't need synchronization"); | |
| 512 __ bind(L); | |
| 513 } | |
| 514 #endif // ASSERT | |
| 515 | |
| 516 // get synchronization object | |
| 517 { | |
| 518 const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + | |
| 519 Klass::java_mirror_offset_in_bytes(); | |
| 520 Label done; | |
| 521 __ movl(rax, access_flags); | |
| 522 __ testl(rax, JVM_ACC_STATIC); | |
| 523 // get receiver (assume this is frequent case) | |
| 304 | 524 __ movptr(rax, Address(r14, Interpreter::local_offset_in_bytes(0))); |
| 0 | 525 __ jcc(Assembler::zero, done); |
| 304 | 526 __ movptr(rax, Address(rbx, methodOopDesc::constants_offset())); |
| 527 __ movptr(rax, Address(rax, | |
| 528 constantPoolOopDesc::pool_holder_offset_in_bytes())); | |
| 529 __ movptr(rax, Address(rax, mirror_offset)); | |
| 0 | 530 |
| 531 #ifdef ASSERT | |
| 532 { | |
| 533 Label L; | |
| 304 | 534 __ testptr(rax, rax); |
| 0 | 535 __ jcc(Assembler::notZero, L); |
| 536 __ stop("synchronization object is NULL"); | |
| 537 __ bind(L); | |
| 538 } | |
| 539 #endif // ASSERT | |
| 540 | |
| 541 __ bind(done); | |
| 542 } | |
| 543 | |
| 544 // add space for monitor & lock | |
| 304 | 545 __ subptr(rsp, entry_size); // add space for a monitor entry |
| 546 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
| 0 | 547 // store object |
| 304 | 548 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); |
| 549 __ movptr(c_rarg1, rsp); // object address | |
| 0 | 550 __ lock_object(c_rarg1); |
| 551 } | |
| 552 | |
| 553 // Generate a fixed interpreter frame. This is identical setup for | |
| 554 // interpreted methods and for native methods hence the shared code. | |
| 555 // | |
| 556 // Args: | |
| 557 // rax: return address | |
| 558 // rbx: methodOop | |
| 559 // r14: pointer to locals | |
| 560 // r13: sender sp | |
| 561 // rdx: cp cache | |
| 562 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
| 563 // initialize fixed part of activation frame | |
| 304 | 564 __ push(rax); // save return address |
| 0 | 565 __ enter(); // save old & set new rbp |
| 304 | 566 __ push(r13); // set sender sp |
| 567 __ push((int)NULL_WORD); // leave last_sp as null | |
| 568 __ movptr(r13, Address(rbx, methodOopDesc::const_offset())); // get constMethodOop | |
| 569 __ lea(r13, Address(r13, constMethodOopDesc::codes_offset())); // get codebase | |
| 570 __ push(rbx); // save methodOop | |
| 0 | 571 if (ProfileInterpreter) { |
| 572 Label method_data_continue; | |
| 304 | 573 __ movptr(rdx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
| 574 __ testptr(rdx, rdx); | |
| 0 | 575 __ jcc(Assembler::zero, method_data_continue); |
| 304 | 576 __ addptr(rdx, in_bytes(methodDataOopDesc::data_offset())); |
| 0 | 577 __ bind(method_data_continue); |
| 304 | 578 __ push(rdx); // set the mdp (method data pointer) |
| 0 | 579 } else { |
| 304 | 580 __ push(0); |
| 0 | 581 } |
| 582 | |
| 304 | 583 __ movptr(rdx, Address(rbx, methodOopDesc::constants_offset())); |
| 584 __ movptr(rdx, Address(rdx, constantPoolOopDesc::cache_offset_in_bytes())); | |
| 585 __ push(rdx); // set constant pool cache | |
| 586 __ push(r14); // set locals pointer | |
| 0 | 587 if (native_call) { |
| 304 | 588 __ push(0); // no bcp |
| 0 | 589 } else { |
| 304 | 590 __ push(r13); // set bcp |
| 0 | 591 } |
| 304 | 592 __ push(0); // reserve word for pointer to expression stack bottom |
| 593 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
| 0 | 594 } |
| 595 | |
| 596 // End of helpers | |
| 597 | |
| 304 | 598 // Various method entries |
| 599 //------------------------------------------------------------------------------------------------------------------------ | |
| 600 // | |
| 601 // | |
| 602 | |
| 603 // Call an accessor method (assuming it is resolved, otherwise drop | |
| 604 // into vanilla (slow path) entry | |
| 605 address InterpreterGenerator::generate_accessor_entry(void) { | |
| 606 // rbx: methodOop | |
| 607 | |
| 608 // r13: senderSP must preserver for slow path, set SP to it on fast path | |
| 609 | |
| 610 address entry_point = __ pc(); | |
| 611 Label xreturn_path; | |
| 612 | |
| 613 // do fastpath for resolved accessor methods | |
| 614 if (UseFastAccessorMethods) { | |
| 615 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites | |
| 616 // thereof; parameter size = 1 | |
| 617 // Note: We can only use this code if the getfield has been resolved | |
| 618 // and if we don't have a null-pointer exception => check for | |
| 619 // these conditions first and use slow path if necessary. | |
| 620 Label slow_path; | |
| 621 // If we need a safepoint check, generate full interpreter entry. | |
| 622 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
| 623 SafepointSynchronize::_not_synchronized); | |
| 624 | |
| 625 __ jcc(Assembler::notEqual, slow_path); | |
| 626 // rbx: method | |
| 627 __ movptr(rax, Address(rsp, wordSize)); | |
| 628 | |
| 629 // check if local 0 != NULL and read field | |
| 630 __ testptr(rax, rax); | |
| 631 __ jcc(Assembler::zero, slow_path); | |
| 632 | |
| 633 __ movptr(rdi, Address(rbx, methodOopDesc::constants_offset())); | |
| 634 // read first instruction word and extract bytecode @ 1 and index @ 2 | |
| 635 __ movptr(rdx, Address(rbx, methodOopDesc::const_offset())); | |
| 636 __ movl(rdx, Address(rdx, constMethodOopDesc::codes_offset())); | |
| 637 // Shift codes right to get the index on the right. | |
| 638 // The bytecode fetched looks like <index><0xb4><0x2a> | |
| 639 __ shrl(rdx, 2 * BitsPerByte); | |
| 640 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
| 641 __ movptr(rdi, Address(rdi, constantPoolOopDesc::cache_offset_in_bytes())); | |
| 642 | |
| 643 // rax: local 0 | |
| 644 // rbx: method | |
| 645 // rdx: constant pool cache index | |
| 646 // rdi: constant pool cache | |
| 647 | |
| 648 // check if getfield has been resolved and read constant pool cache entry | |
| 649 // check the validity of the cache entry by testing whether _indices field | |
| 650 // contains Bytecode::_getfield in b1 byte. | |
| 651 assert(in_words(ConstantPoolCacheEntry::size()) == 4, | |
| 652 "adjust shift below"); | |
| 653 __ movl(rcx, | |
| 654 Address(rdi, | |
| 655 rdx, | |
| 656 Address::times_8, | |
| 657 constantPoolCacheOopDesc::base_offset() + | |
| 658 ConstantPoolCacheEntry::indices_offset())); | |
| 659 __ shrl(rcx, 2 * BitsPerByte); | |
| 660 __ andl(rcx, 0xFF); | |
| 661 __ cmpl(rcx, Bytecodes::_getfield); | |
| 662 __ jcc(Assembler::notEqual, slow_path); | |
| 663 | |
| 664 // Note: constant pool entry is not valid before bytecode is resolved | |
| 665 __ movptr(rcx, | |
| 666 Address(rdi, | |
| 667 rdx, | |
| 668 Address::times_8, | |
| 669 constantPoolCacheOopDesc::base_offset() + | |
| 670 ConstantPoolCacheEntry::f2_offset())); | |
| 671 // edx: flags | |
| 672 __ movl(rdx, | |
| 673 Address(rdi, | |
| 674 rdx, | |
| 675 Address::times_8, | |
| 676 constantPoolCacheOopDesc::base_offset() + | |
| 677 ConstantPoolCacheEntry::flags_offset())); | |
| 678 | |
| 679 Label notObj, notInt, notByte, notShort; | |
| 680 const Address field_address(rax, rcx, Address::times_1); | |
| 681 | |
| 682 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
| 683 // because they are different sizes. | |
| 684 // Use the type from the constant pool cache | |
| 685 __ shrl(rdx, ConstantPoolCacheEntry::tosBits); | |
| 686 // Make sure we don't need to mask edx for tosBits after the above shift | |
| 687 ConstantPoolCacheEntry::verify_tosBits(); | |
| 688 | |
| 689 __ cmpl(rdx, atos); | |
| 690 __ jcc(Assembler::notEqual, notObj); | |
| 691 // atos | |
| 692 __ load_heap_oop(rax, field_address); | |
| 693 __ jmp(xreturn_path); | |
| 694 | |
| 695 __ bind(notObj); | |
| 696 __ cmpl(rdx, itos); | |
| 697 __ jcc(Assembler::notEqual, notInt); | |
| 698 // itos | |
| 699 __ movl(rax, field_address); | |
| 700 __ jmp(xreturn_path); | |
| 701 | |
| 702 __ bind(notInt); | |
| 703 __ cmpl(rdx, btos); | |
| 704 __ jcc(Assembler::notEqual, notByte); | |
| 705 // btos | |
| 706 __ load_signed_byte(rax, field_address); | |
| 707 __ jmp(xreturn_path); | |
| 708 | |
| 709 __ bind(notByte); | |
| 710 __ cmpl(rdx, stos); | |
| 711 __ jcc(Assembler::notEqual, notShort); | |
| 712 // stos | |
|
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713 __ load_signed_short(rax, field_address); |
| 304 | 714 __ jmp(xreturn_path); |
| 715 | |
| 716 __ bind(notShort); | |
| 717 #ifdef ASSERT | |
| 718 Label okay; | |
| 719 __ cmpl(rdx, ctos); | |
| 720 __ jcc(Assembler::equal, okay); | |
| 721 __ stop("what type is this?"); | |
| 722 __ bind(okay); | |
| 723 #endif | |
| 724 // ctos | |
|
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725 __ load_unsigned_short(rax, field_address); |
| 304 | 726 |
| 727 __ bind(xreturn_path); | |
| 728 | |
| 729 // _ireturn/_areturn | |
| 730 __ pop(rdi); | |
| 731 __ mov(rsp, r13); | |
| 732 __ jmp(rdi); | |
| 733 __ ret(0); | |
| 734 | |
| 735 // generate a vanilla interpreter entry as the slow path | |
| 736 __ bind(slow_path); | |
| 737 (void) generate_normal_entry(false); | |
| 738 } else { | |
| 739 (void) generate_normal_entry(false); | |
| 740 } | |
| 741 | |
| 742 return entry_point; | |
| 743 } | |
| 744 | |
|
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745 // Method entry for java.lang.ref.Reference.get. |
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746 address InterpreterGenerator::generate_Reference_get_entry(void) { |
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747 #ifndef SERIALGC |
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748 // Code: _aload_0, _getfield, _areturn |
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749 // parameter size = 1 |
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750 // |
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751 // The code that gets generated by this routine is split into 2 parts: |
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752 // 1. The "intrinsified" code for G1 (or any SATB based GC), |
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753 // 2. The slow path - which is an expansion of the regular method entry. |
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754 // |
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755 // Notes:- |
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756 // * In the G1 code we do not check whether we need to block for |
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757 // a safepoint. If G1 is enabled then we must execute the specialized |
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758 // code for Reference.get (except when the Reference object is null) |
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759 // so that we can log the value in the referent field with an SATB |
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760 // update buffer. |
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761 // If the code for the getfield template is modified so that the |
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762 // G1 pre-barrier code is executed when the current method is |
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763 // Reference.get() then going through the normal method entry |
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764 // will be fine. |
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765 // * The G1 code can, however, check the receiver object (the instance |
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766 // of java.lang.Reference) and jump to the slow path if null. If the |
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767 // Reference object is null then we obviously cannot fetch the referent |
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768 // and so we don't need to call the G1 pre-barrier. Thus we can use the |
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769 // regular method entry code to generate the NPE. |
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770 // |
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771 // This code is based on generate_accessor_enty. |
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772 // |
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773 // rbx: methodOop |
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774 |
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775 // r13: senderSP must preserve for slow path, set SP to it on fast path |
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776 |
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777 address entry = __ pc(); |
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778 |
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779 const int referent_offset = java_lang_ref_Reference::referent_offset; |
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780 guarantee(referent_offset > 0, "referent offset not initialized"); |
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781 |
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782 if (UseG1GC) { |
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783 Label slow_path; |
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784 // rbx: method |
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785 |
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786 // Check if local 0 != NULL |
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787 // If the receiver is null then it is OK to jump to the slow path. |
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788 __ movptr(rax, Address(rsp, wordSize)); |
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789 |
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790 __ testptr(rax, rax); |
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791 __ jcc(Assembler::zero, slow_path); |
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792 |
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793 // rax: local 0 |
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794 // rbx: method (but can be used as scratch now) |
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795 // rdx: scratch |
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796 // rdi: scratch |
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797 |
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798 // Generate the G1 pre-barrier code to log the value of |
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799 // the referent field in an SATB buffer. |
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800 |
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801 // Load the value of the referent field. |
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802 const Address field_address(rax, referent_offset); |
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803 __ load_heap_oop(rax, field_address); |
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804 |
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805 // Generate the G1 pre-barrier code to log the value of |
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806 // the referent field in an SATB buffer. |
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807 __ g1_write_barrier_pre(noreg /* obj */, |
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808 rax /* pre_val */, |
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809 r15_thread /* thread */, |
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810 rbx /* tmp */, |
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811 true /* tosca_live */, |
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812 true /* expand_call */); |
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813 |
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814 // _areturn |
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815 __ pop(rdi); // get return address |
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816 __ mov(rsp, r13); // set sp to sender sp |
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817 __ jmp(rdi); |
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818 __ ret(0); |
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819 |
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820 // generate a vanilla interpreter entry as the slow path |
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821 __ bind(slow_path); |
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822 (void) generate_normal_entry(false); |
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823 |
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824 return entry; |
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825 } |
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826 #endif // SERIALGC |
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827 |
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828 // If G1 is not enabled then attempt to go through the accessor entry point |
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829 // Reference.get is an accessor |
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830 return generate_accessor_entry(); |
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831 } |
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832 |
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833 |
| 0 | 834 // Interpreter stub for calling a native method. (asm interpreter) |
| 835 // This sets up a somewhat different looking stack for calling the | |
| 836 // native method than the typical interpreter frame setup. | |
| 837 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
| 838 // determine code generation flags | |
| 839 bool inc_counter = UseCompiler || CountCompiledCalls; | |
| 840 | |
| 841 // rbx: methodOop | |
| 842 // r13: sender sp | |
| 843 | |
| 844 address entry_point = __ pc(); | |
| 845 | |
| 846 const Address size_of_parameters(rbx, methodOopDesc:: | |
| 847 size_of_parameters_offset()); | |
| 848 const Address invocation_counter(rbx, methodOopDesc:: | |
| 849 invocation_counter_offset() + | |
| 850 InvocationCounter::counter_offset()); | |
| 851 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
| 852 | |
| 853 // get parameter size (always needed) | |
|
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854 __ load_unsigned_short(rcx, size_of_parameters); |
| 0 | 855 |
| 856 // native calls don't need the stack size check since they have no | |
| 857 // expression stack and the arguments are already on the stack and | |
| 858 // we only add a handful of words to the stack | |
| 859 | |
| 860 // rbx: methodOop | |
| 861 // rcx: size of parameters | |
| 862 // r13: sender sp | |
| 304 | 863 __ pop(rax); // get return address |
| 0 | 864 |
| 865 // for natives the size of locals is zero | |
| 866 | |
| 867 // compute beginning of parameters (r14) | |
| 304 | 868 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
| 0 | 869 |
| 870 // add 2 zero-initialized slots for native calls | |
| 871 // initialize result_handler slot | |
| 304 | 872 __ push((int) NULL_WORD); |
| 0 | 873 // slot for oop temp |
| 874 // (static native method holder mirror/jni oop result) | |
| 304 | 875 __ push((int) NULL_WORD); |
| 0 | 876 |
| 877 if (inc_counter) { | |
| 878 __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
| 879 } | |
| 880 | |
| 881 // initialize fixed part of activation frame | |
| 882 generate_fixed_frame(true); | |
| 883 | |
| 884 // make sure method is native & not abstract | |
| 885 #ifdef ASSERT | |
| 886 __ movl(rax, access_flags); | |
| 887 { | |
| 888 Label L; | |
| 889 __ testl(rax, JVM_ACC_NATIVE); | |
| 890 __ jcc(Assembler::notZero, L); | |
| 891 __ stop("tried to execute non-native method as native"); | |
| 892 __ bind(L); | |
| 893 } | |
| 894 { | |
| 895 Label L; | |
| 896 __ testl(rax, JVM_ACC_ABSTRACT); | |
| 897 __ jcc(Assembler::zero, L); | |
| 898 __ stop("tried to execute abstract method in interpreter"); | |
| 899 __ bind(L); | |
| 900 } | |
| 901 #endif | |
| 902 | |
| 903 // Since at this point in the method invocation the exception handler | |
| 904 // would try to exit the monitor of synchronized methods which hasn't | |
| 905 // been entered yet, we set the thread local variable | |
| 906 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
| 907 // check this flag. | |
| 908 | |
| 909 const Address do_not_unlock_if_synchronized(r15_thread, | |
| 910 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 911 __ movbool(do_not_unlock_if_synchronized, true); | |
| 912 | |
| 913 // increment invocation count & check for overflow | |
| 914 Label invocation_counter_overflow; | |
| 915 if (inc_counter) { | |
| 916 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
| 917 } | |
| 918 | |
| 919 Label continue_after_compile; | |
| 920 __ bind(continue_after_compile); | |
| 921 | |
| 922 bang_stack_shadow_pages(true); | |
| 923 | |
| 924 // reset the _do_not_unlock_if_synchronized flag | |
| 925 __ movbool(do_not_unlock_if_synchronized, false); | |
| 926 | |
| 927 // check for synchronized methods | |
| 928 // Must happen AFTER invocation_counter check and stack overflow check, | |
| 929 // so method is not locked if overflows. | |
| 930 if (synchronized) { | |
| 931 lock_method(); | |
| 932 } else { | |
| 933 // no synchronization necessary | |
| 934 #ifdef ASSERT | |
| 935 { | |
| 936 Label L; | |
| 937 __ movl(rax, access_flags); | |
| 938 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 939 __ jcc(Assembler::zero, L); | |
| 940 __ stop("method needs synchronization"); | |
| 941 __ bind(L); | |
| 942 } | |
| 943 #endif | |
| 944 } | |
| 945 | |
| 946 // start execution | |
| 947 #ifdef ASSERT | |
| 948 { | |
| 949 Label L; | |
| 950 const Address monitor_block_top(rbp, | |
| 951 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 304 | 952 __ movptr(rax, monitor_block_top); |
| 953 __ cmpptr(rax, rsp); | |
| 0 | 954 __ jcc(Assembler::equal, L); |
| 955 __ stop("broken stack frame setup in interpreter"); | |
| 956 __ bind(L); | |
| 957 } | |
| 958 #endif | |
| 959 | |
| 960 // jvmti support | |
| 961 __ notify_method_entry(); | |
| 962 | |
| 963 // work registers | |
| 964 const Register method = rbx; | |
|
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965 const Register t = r11; |
| 0 | 966 |
| 967 // allocate space for parameters | |
| 968 __ get_method(method); | |
| 969 __ verify_oop(method); | |
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970 __ load_unsigned_short(t, |
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971 Address(method, |
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972 methodOopDesc::size_of_parameters_offset())); |
| 1506 | 973 __ shll(t, Interpreter::logStackElementSize); |
| 0 | 974 |
| 304 | 975 __ subptr(rsp, t); |
| 976 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows | |
| 605 | 977 __ andptr(rsp, -16); // must be 16 byte boundary (see amd64 ABI) |
| 0 | 978 |
| 979 // get signature handler | |
| 980 { | |
| 981 Label L; | |
| 304 | 982 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
| 983 __ testptr(t, t); | |
| 0 | 984 __ jcc(Assembler::notZero, L); |
| 985 __ call_VM(noreg, | |
| 986 CAST_FROM_FN_PTR(address, | |
| 987 InterpreterRuntime::prepare_native_call), | |
| 988 method); | |
| 989 __ get_method(method); | |
| 304 | 990 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
| 0 | 991 __ bind(L); |
| 992 } | |
| 993 | |
| 994 // call signature handler | |
| 995 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == r14, | |
| 996 "adjust this code"); | |
| 997 assert(InterpreterRuntime::SignatureHandlerGenerator::to() == rsp, | |
| 998 "adjust this code"); | |
| 999 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == rscratch1, | |
| 1000 "adjust this code"); | |
| 1001 | |
| 1002 // The generated handlers do not touch RBX (the method oop). | |
| 1003 // However, large signatures cannot be cached and are generated | |
| 1004 // each time here. The slow-path generator can do a GC on return, | |
| 1005 // so we must reload it after the call. | |
| 1006 __ call(t); | |
| 1007 __ get_method(method); // slow path can do a GC, reload RBX | |
| 1008 | |
| 1009 | |
| 1010 // result handler is in rax | |
| 1011 // set result handler | |
| 304 | 1012 __ movptr(Address(rbp, |
| 1013 (frame::interpreter_frame_result_handler_offset) * wordSize), | |
| 1014 rax); | |
| 0 | 1015 |
| 1016 // pass mirror handle if static call | |
| 1017 { | |
| 1018 Label L; | |
| 1019 const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + | |
| 1020 Klass::java_mirror_offset_in_bytes(); | |
| 1021 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); | |
| 1022 __ testl(t, JVM_ACC_STATIC); | |
| 1023 __ jcc(Assembler::zero, L); | |
| 1024 // get mirror | |
| 304 | 1025 __ movptr(t, Address(method, methodOopDesc::constants_offset())); |
| 1026 __ movptr(t, Address(t, constantPoolOopDesc::pool_holder_offset_in_bytes())); | |
| 1027 __ movptr(t, Address(t, mirror_offset)); | |
| 0 | 1028 // copy mirror into activation frame |
| 304 | 1029 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), |
| 0 | 1030 t); |
| 1031 // pass handle to mirror | |
| 304 | 1032 __ lea(c_rarg1, |
| 1033 Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); | |
| 0 | 1034 __ bind(L); |
| 1035 } | |
| 1036 | |
| 1037 // get native function entry point | |
| 1038 { | |
| 1039 Label L; | |
| 304 | 1040 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
| 0 | 1041 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
| 1042 __ movptr(rscratch2, unsatisfied.addr()); | |
| 304 | 1043 __ cmpptr(rax, rscratch2); |
| 0 | 1044 __ jcc(Assembler::notEqual, L); |
| 1045 __ call_VM(noreg, | |
| 1046 CAST_FROM_FN_PTR(address, | |
| 1047 InterpreterRuntime::prepare_native_call), | |
| 1048 method); | |
| 1049 __ get_method(method); | |
| 1050 __ verify_oop(method); | |
| 304 | 1051 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
| 0 | 1052 __ bind(L); |
| 1053 } | |
| 1054 | |
| 1055 // pass JNIEnv | |
| 304 | 1056 __ lea(c_rarg0, Address(r15_thread, JavaThread::jni_environment_offset())); |
| 0 | 1057 |
| 1058 // It is enough that the pc() points into the right code | |
| 1059 // segment. It does not have to be the correct return pc. | |
| 1060 __ set_last_Java_frame(rsp, rbp, (address) __ pc()); | |
| 1061 | |
| 1062 // change thread state | |
| 1063 #ifdef ASSERT | |
| 1064 { | |
| 1065 Label L; | |
| 1066 __ movl(t, Address(r15_thread, JavaThread::thread_state_offset())); | |
| 1067 __ cmpl(t, _thread_in_Java); | |
| 1068 __ jcc(Assembler::equal, L); | |
| 1069 __ stop("Wrong thread state in native stub"); | |
| 1070 __ bind(L); | |
| 1071 } | |
| 1072 #endif | |
| 1073 | |
| 1074 // Change state to native | |
| 1075 | |
| 1076 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
| 1077 _thread_in_native); | |
| 1078 | |
| 1079 // Call the native method. | |
| 1080 __ call(rax); | |
| 1081 // result potentially in rax or xmm0 | |
| 1082 | |
| 1083 // Depending on runtime options, either restore the MXCSR | |
| 1084 // register after returning from the JNI Call or verify that | |
| 1085 // it wasn't changed during -Xcheck:jni. | |
| 1086 if (RestoreMXCSROnJNICalls) { | |
| 304 | 1087 __ ldmxcsr(ExternalAddress(StubRoutines::x86::mxcsr_std())); |
| 0 | 1088 } |
| 1089 else if (CheckJNICalls) { | |
| 304 | 1090 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, StubRoutines::x86::verify_mxcsr_entry()))); |
| 0 | 1091 } |
| 1092 | |
| 1093 // NOTE: The order of these pushes is known to frame::interpreter_frame_result | |
| 1094 // in order to extract the result of a method call. If the order of these | |
| 1095 // pushes change or anything else is added to the stack then the code in | |
| 1096 // interpreter_frame_result must also change. | |
| 1097 | |
| 1098 __ push(dtos); | |
| 1099 __ push(ltos); | |
| 1100 | |
| 1101 // change thread state | |
| 1102 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
| 1103 _thread_in_native_trans); | |
| 1104 | |
| 1105 if (os::is_MP()) { | |
| 1106 if (UseMembar) { | |
| 1107 // Force this write out before the read below | |
| 1108 __ membar(Assembler::Membar_mask_bits( | |
| 1109 Assembler::LoadLoad | Assembler::LoadStore | | |
| 1110 Assembler::StoreLoad | Assembler::StoreStore)); | |
| 1111 } else { | |
| 1112 // Write serialization page so VM thread can do a pseudo remote membar. | |
| 1113 // We use the current thread pointer to calculate a thread specific | |
| 1114 // offset to write to within the page. This minimizes bus traffic | |
| 1115 // due to cache line collision. | |
| 1116 __ serialize_memory(r15_thread, rscratch2); | |
| 1117 } | |
| 1118 } | |
| 1119 | |
| 1120 // check for safepoint operation in progress and/or pending suspend requests | |
| 1121 { | |
| 1122 Label Continue; | |
| 1123 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
| 1124 SafepointSynchronize::_not_synchronized); | |
| 1125 | |
| 1126 Label L; | |
| 1127 __ jcc(Assembler::notEqual, L); | |
| 1128 __ cmpl(Address(r15_thread, JavaThread::suspend_flags_offset()), 0); | |
| 1129 __ jcc(Assembler::equal, Continue); | |
| 1130 __ bind(L); | |
| 1131 | |
| 1132 // Don't use call_VM as it will see a possible pending exception | |
| 1133 // and forward it and never return here preventing us from | |
| 1134 // clearing _last_native_pc down below. Also can't use | |
| 1135 // call_VM_leaf either as it will check to see if r13 & r14 are | |
| 1136 // preserved and correspond to the bcp/locals pointers. So we do a | |
| 1137 // runtime call by hand. | |
| 1138 // | |
| 304 | 1139 __ mov(c_rarg0, r15_thread); |
|
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1140 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
| 304 | 1141 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
| 1142 __ andptr(rsp, -16); // align stack as required by ABI | |
| 0 | 1143 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans))); |
| 304 | 1144 __ mov(rsp, r12); // restore sp |
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1145 __ reinit_heapbase(); |
| 0 | 1146 __ bind(Continue); |
| 1147 } | |
| 1148 | |
| 1149 // change thread state | |
| 1150 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
| 1151 | |
| 1152 // reset_last_Java_frame | |
| 1153 __ reset_last_Java_frame(true, true); | |
| 1154 | |
| 1155 // reset handle block | |
| 304 | 1156 __ movptr(t, Address(r15_thread, JavaThread::active_handles_offset())); |
| 1157 __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD); | |
| 0 | 1158 |
| 1159 // If result is an oop unbox and store it in frame where gc will see it | |
| 1160 // and result handler will pick it up | |
| 1161 | |
| 1162 { | |
| 1163 Label no_oop, store_result; | |
| 1164 __ lea(t, ExternalAddress(AbstractInterpreter::result_handler(T_OBJECT))); | |
| 304 | 1165 __ cmpptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
| 0 | 1166 __ jcc(Assembler::notEqual, no_oop); |
| 1167 // retrieve result | |
| 1168 __ pop(ltos); | |
| 304 | 1169 __ testptr(rax, rax); |
| 0 | 1170 __ jcc(Assembler::zero, store_result); |
| 304 | 1171 __ movptr(rax, Address(rax, 0)); |
| 0 | 1172 __ bind(store_result); |
| 304 | 1173 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize), rax); |
| 0 | 1174 // keep stack depth as expected by pushing oop which will eventually be discarde |
| 1175 __ push(ltos); | |
| 1176 __ bind(no_oop); | |
| 1177 } | |
| 1178 | |
| 1179 | |
| 1180 { | |
| 1181 Label no_reguard; | |
| 1182 __ cmpl(Address(r15_thread, JavaThread::stack_guard_state_offset()), | |
| 1183 JavaThread::stack_guard_yellow_disabled); | |
| 1184 __ jcc(Assembler::notEqual, no_reguard); | |
| 1185 | |
| 304 | 1186 __ pusha(); // XXX only save smashed registers |
|
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|
1187 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
| 304 | 1188 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
| 1189 __ andptr(rsp, -16); // align stack as required by ABI | |
| 0 | 1190 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
| 304 | 1191 __ mov(rsp, r12); // restore sp |
| 1192 __ popa(); // XXX only restore smashed registers | |
|
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1193 __ reinit_heapbase(); |
| 0 | 1194 |
| 1195 __ bind(no_reguard); | |
| 1196 } | |
| 1197 | |
| 1198 | |
| 1199 // The method register is junk from after the thread_in_native transition | |
| 1200 // until here. Also can't call_VM until the bcp has been | |
| 1201 // restored. Need bcp for throwing exception below so get it now. | |
| 1202 __ get_method(method); | |
| 1203 __ verify_oop(method); | |
| 1204 | |
| 1205 // restore r13 to have legal interpreter frame, i.e., bci == 0 <=> | |
| 1206 // r13 == code_base() | |
| 304 | 1207 __ movptr(r13, Address(method, methodOopDesc::const_offset())); // get constMethodOop |
| 1208 __ lea(r13, Address(r13, constMethodOopDesc::codes_offset())); // get codebase | |
| 0 | 1209 // handle exceptions (exception handling will handle unlocking!) |
| 1210 { | |
| 1211 Label L; | |
| 304 | 1212 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
| 0 | 1213 __ jcc(Assembler::zero, L); |
| 1214 // Note: At some point we may want to unify this with the code | |
| 1215 // used in call_VM_base(); i.e., we should use the | |
| 1216 // StubRoutines::forward_exception code. For now this doesn't work | |
| 1217 // here because the rsp is not correctly set at this point. | |
| 1218 __ MacroAssembler::call_VM(noreg, | |
| 1219 CAST_FROM_FN_PTR(address, | |
| 1220 InterpreterRuntime::throw_pending_exception)); | |
| 1221 __ should_not_reach_here(); | |
| 1222 __ bind(L); | |
| 1223 } | |
| 1224 | |
| 1225 // do unlocking if necessary | |
| 1226 { | |
| 1227 Label L; | |
| 1228 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); | |
| 1229 __ testl(t, JVM_ACC_SYNCHRONIZED); | |
| 1230 __ jcc(Assembler::zero, L); | |
| 1231 // the code below should be shared with interpreter macro | |
| 1232 // assembler implementation | |
| 1233 { | |
| 1234 Label unlock; | |
| 1235 // BasicObjectLock will be first in list, since this is a | |
| 1236 // synchronized method. However, need to check that the object | |
| 1237 // has not been unlocked by an explicit monitorexit bytecode. | |
| 1238 const Address monitor(rbp, | |
| 1239 (intptr_t)(frame::interpreter_frame_initial_sp_offset * | |
| 1240 wordSize - sizeof(BasicObjectLock))); | |
| 1241 | |
| 1242 // monitor expect in c_rarg1 for slow unlock path | |
| 304 | 1243 __ lea(c_rarg1, monitor); // address of first monitor |
| 0 | 1244 |
| 304 | 1245 __ movptr(t, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
| 1246 __ testptr(t, t); | |
| 0 | 1247 __ jcc(Assembler::notZero, unlock); |
| 1248 | |
| 1249 // Entry already unlocked, need to throw exception | |
| 1250 __ MacroAssembler::call_VM(noreg, | |
| 1251 CAST_FROM_FN_PTR(address, | |
| 1252 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 1253 __ should_not_reach_here(); | |
| 1254 | |
| 1255 __ bind(unlock); | |
| 1256 __ unlock_object(c_rarg1); | |
| 1257 } | |
| 1258 __ bind(L); | |
| 1259 } | |
| 1260 | |
| 1261 // jvmti support | |
| 1262 // Note: This must happen _after_ handling/throwing any exceptions since | |
| 1263 // the exception handler code notifies the runtime of method exits | |
| 1264 // too. If this happens before, method entry/exit notifications are | |
| 1265 // not properly paired (was bug - gri 11/22/99). | |
| 1266 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
| 1267 | |
| 1268 // restore potential result in edx:eax, call result handler to | |
| 1269 // restore potential result in ST0 & handle result | |
| 1270 | |
| 1271 __ pop(ltos); | |
| 1272 __ pop(dtos); | |
| 1273 | |
| 304 | 1274 __ movptr(t, Address(rbp, |
| 1275 (frame::interpreter_frame_result_handler_offset) * wordSize)); | |
| 0 | 1276 __ call(t); |
| 1277 | |
| 1278 // remove activation | |
| 304 | 1279 __ movptr(t, Address(rbp, |
| 1280 frame::interpreter_frame_sender_sp_offset * | |
| 1281 wordSize)); // get sender sp | |
| 0 | 1282 __ leave(); // remove frame anchor |
| 304 | 1283 __ pop(rdi); // get return address |
| 1284 __ mov(rsp, t); // set sp to sender sp | |
| 0 | 1285 __ jmp(rdi); |
| 1286 | |
| 1287 if (inc_counter) { | |
| 1288 // Handle overflow of counter and compile method | |
| 1289 __ bind(invocation_counter_overflow); | |
| 1290 generate_counter_overflow(&continue_after_compile); | |
| 1291 } | |
| 1292 | |
| 1293 return entry_point; | |
| 1294 } | |
| 1295 | |
| 1296 // | |
| 1297 // Generic interpreted method entry to (asm) interpreter | |
| 1298 // | |
| 1299 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
| 1300 // determine code generation flags | |
| 1301 bool inc_counter = UseCompiler || CountCompiledCalls; | |
| 1302 | |
| 1303 // ebx: methodOop | |
| 1304 // r13: sender sp | |
| 1305 address entry_point = __ pc(); | |
| 1306 | |
| 1307 const Address size_of_parameters(rbx, | |
| 1308 methodOopDesc::size_of_parameters_offset()); | |
| 1309 const Address size_of_locals(rbx, methodOopDesc::size_of_locals_offset()); | |
| 1310 const Address invocation_counter(rbx, | |
| 1311 methodOopDesc::invocation_counter_offset() + | |
| 1312 InvocationCounter::counter_offset()); | |
| 1313 const Address access_flags(rbx, methodOopDesc::access_flags_offset()); | |
| 1314 | |
| 1315 // get parameter size (always needed) | |
|
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1316 __ load_unsigned_short(rcx, size_of_parameters); |
| 0 | 1317 |
| 1318 // rbx: methodOop | |
| 1319 // rcx: size of parameters | |
| 1320 // r13: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
| 1321 | |
|
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1322 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
| 0 | 1323 __ subl(rdx, rcx); // rdx = no. of additional locals |
| 1324 | |
| 1325 // YYY | |
| 1326 // __ incrementl(rdx); | |
| 1327 // __ andl(rdx, -2); | |
| 1328 | |
| 1329 // see if we've got enough room on the stack for locals plus overhead. | |
| 1330 generate_stack_overflow_check(); | |
| 1331 | |
| 1332 // get return address | |
| 304 | 1333 __ pop(rax); |
| 0 | 1334 |
| 1335 // compute beginning of parameters (r14) | |
| 304 | 1336 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
| 0 | 1337 |
| 1338 // rdx - # of additional locals | |
| 1339 // allocate space for locals | |
| 1340 // explicitly initialize locals | |
| 1341 { | |
| 1342 Label exit, loop; | |
| 1343 __ testl(rdx, rdx); | |
| 1344 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 | |
| 1345 __ bind(loop); | |
| 304 | 1346 __ push((int) NULL_WORD); // initialize local variables |
| 0 | 1347 __ decrementl(rdx); // until everything initialized |
| 1348 __ jcc(Assembler::greater, loop); | |
| 1349 __ bind(exit); | |
| 1350 } | |
| 1351 | |
| 1352 // (pre-)fetch invocation count | |
| 1353 if (inc_counter) { | |
| 1354 __ movl(rcx, invocation_counter); | |
| 1355 } | |
| 1356 // initialize fixed part of activation frame | |
| 1357 generate_fixed_frame(false); | |
| 1358 | |
| 1359 // make sure method is not native & not abstract | |
| 1360 #ifdef ASSERT | |
| 1361 __ movl(rax, access_flags); | |
| 1362 { | |
| 1363 Label L; | |
| 1364 __ testl(rax, JVM_ACC_NATIVE); | |
| 1365 __ jcc(Assembler::zero, L); | |
| 1366 __ stop("tried to execute native method as non-native"); | |
| 1367 __ bind(L); | |
| 1368 } | |
| 1369 { | |
| 1370 Label L; | |
| 1371 __ testl(rax, JVM_ACC_ABSTRACT); | |
| 1372 __ jcc(Assembler::zero, L); | |
| 1373 __ stop("tried to execute abstract method in interpreter"); | |
| 1374 __ bind(L); | |
| 1375 } | |
| 1376 #endif | |
| 1377 | |
| 1378 // Since at this point in the method invocation the exception | |
| 1379 // handler would try to exit the monitor of synchronized methods | |
| 1380 // which hasn't been entered yet, we set the thread local variable | |
| 1381 // _do_not_unlock_if_synchronized to true. The remove_activation | |
| 1382 // will check this flag. | |
| 1383 | |
| 1384 const Address do_not_unlock_if_synchronized(r15_thread, | |
| 1385 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 1386 __ movbool(do_not_unlock_if_synchronized, true); | |
| 1387 | |
| 1388 // increment invocation count & check for overflow | |
| 1389 Label invocation_counter_overflow; | |
| 1390 Label profile_method; | |
| 1391 Label profile_method_continue; | |
| 1392 if (inc_counter) { | |
| 1393 generate_counter_incr(&invocation_counter_overflow, | |
| 1394 &profile_method, | |
| 1395 &profile_method_continue); | |
| 1396 if (ProfileInterpreter) { | |
| 1397 __ bind(profile_method_continue); | |
| 1398 } | |
| 1399 } | |
| 1400 | |
| 1401 Label continue_after_compile; | |
| 1402 __ bind(continue_after_compile); | |
| 1403 | |
| 1404 // check for synchronized interpreted methods | |
| 1405 bang_stack_shadow_pages(false); | |
| 1406 | |
| 1407 // reset the _do_not_unlock_if_synchronized flag | |
| 1408 __ movbool(do_not_unlock_if_synchronized, false); | |
| 1409 | |
| 1410 // check for synchronized methods | |
| 1411 // Must happen AFTER invocation_counter check and stack overflow check, | |
| 1412 // so method is not locked if overflows. | |
| 1413 if (synchronized) { | |
| 1414 // Allocate monitor and lock method | |
| 1415 lock_method(); | |
| 1416 } else { | |
| 1417 // no synchronization necessary | |
| 1418 #ifdef ASSERT | |
| 1419 { | |
| 1420 Label L; | |
| 1421 __ movl(rax, access_flags); | |
| 1422 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 1423 __ jcc(Assembler::zero, L); | |
| 1424 __ stop("method needs synchronization"); | |
| 1425 __ bind(L); | |
| 1426 } | |
| 1427 #endif | |
| 1428 } | |
| 1429 | |
| 1430 // start execution | |
| 1431 #ifdef ASSERT | |
| 1432 { | |
| 1433 Label L; | |
| 1434 const Address monitor_block_top (rbp, | |
| 1435 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 304 | 1436 __ movptr(rax, monitor_block_top); |
| 1437 __ cmpptr(rax, rsp); | |
| 0 | 1438 __ jcc(Assembler::equal, L); |
| 1439 __ stop("broken stack frame setup in interpreter"); | |
| 1440 __ bind(L); | |
| 1441 } | |
| 1442 #endif | |
| 1443 | |
| 1444 // jvmti support | |
| 1445 __ notify_method_entry(); | |
| 1446 | |
| 1447 __ dispatch_next(vtos); | |
| 1448 | |
| 1449 // invocation counter overflow | |
| 1450 if (inc_counter) { | |
| 1451 if (ProfileInterpreter) { | |
| 1452 // We have decided to profile this method in the interpreter | |
| 1453 __ bind(profile_method); | |
|
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1454 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
|
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1455 __ set_method_data_pointer_for_bcp(); |
|
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1456 __ get_method(rbx); |
| 0 | 1457 __ jmp(profile_method_continue); |
| 1458 } | |
| 1459 // Handle overflow of counter and compile method | |
| 1460 __ bind(invocation_counter_overflow); | |
| 1461 generate_counter_overflow(&continue_after_compile); | |
| 1462 } | |
| 1463 | |
| 1464 return entry_point; | |
| 1465 } | |
| 1466 | |
| 1467 // Entry points | |
| 1468 // | |
| 1469 // Here we generate the various kind of entries into the interpreter. | |
| 1470 // The two main entry type are generic bytecode methods and native | |
| 1471 // call method. These both come in synchronized and non-synchronized | |
| 1472 // versions but the frame layout they create is very similar. The | |
| 1473 // other method entry types are really just special purpose entries | |
| 1474 // that are really entry and interpretation all in one. These are for | |
| 1475 // trivial methods like accessor, empty, or special math methods. | |
| 1476 // | |
| 1477 // When control flow reaches any of the entry types for the interpreter | |
| 1478 // the following holds -> | |
| 1479 // | |
| 1480 // Arguments: | |
| 1481 // | |
| 1482 // rbx: methodOop | |
| 1483 // | |
| 1484 // Stack layout immediately at entry | |
| 1485 // | |
| 1486 // [ return address ] <--- rsp | |
| 1487 // [ parameter n ] | |
| 1488 // ... | |
| 1489 // [ parameter 1 ] | |
| 1490 // [ expression stack ] (caller's java expression stack) | |
| 1491 | |
| 1492 // Assuming that we don't go to one of the trivial specialized entries | |
| 1493 // the stack will look like below when we are ready to execute the | |
| 1494 // first bytecode (or call the native routine). The register usage | |
| 1495 // will be as the template based interpreter expects (see | |
| 1496 // interpreter_amd64.hpp). | |
| 1497 // | |
| 1498 // local variables follow incoming parameters immediately; i.e. | |
| 1499 // the return address is moved to the end of the locals). | |
| 1500 // | |
| 1501 // [ monitor entry ] <--- rsp | |
| 1502 // ... | |
| 1503 // [ monitor entry ] | |
| 1504 // [ expr. stack bottom ] | |
| 1505 // [ saved r13 ] | |
| 1506 // [ current r14 ] | |
| 1507 // [ methodOop ] | |
| 1508 // [ saved ebp ] <--- rbp | |
| 1509 // [ return address ] | |
| 1510 // [ local variable m ] | |
| 1511 // ... | |
| 1512 // [ local variable 1 ] | |
| 1513 // [ parameter n ] | |
| 1514 // ... | |
| 1515 // [ parameter 1 ] <--- r14 | |
| 1516 | |
| 1517 address AbstractInterpreterGenerator::generate_method_entry( | |
| 1518 AbstractInterpreter::MethodKind kind) { | |
| 1519 // determine code generation flags | |
| 1520 bool synchronized = false; | |
| 1521 address entry_point = NULL; | |
| 1522 | |
| 1523 switch (kind) { | |
| 1524 case Interpreter::zerolocals : break; | |
| 1525 case Interpreter::zerolocals_synchronized: synchronized = true; break; | |
| 1526 case Interpreter::native : entry_point = ((InterpreterGenerator*) this)->generate_native_entry(false); break; | |
| 1527 case Interpreter::native_synchronized : entry_point = ((InterpreterGenerator*) this)->generate_native_entry(true); break; | |
| 1528 case Interpreter::empty : entry_point = ((InterpreterGenerator*) this)->generate_empty_entry(); break; | |
| 1529 case Interpreter::accessor : entry_point = ((InterpreterGenerator*) this)->generate_accessor_entry(); break; | |
| 1530 case Interpreter::abstract : entry_point = ((InterpreterGenerator*) this)->generate_abstract_entry(); break; | |
| 710 | 1531 case Interpreter::method_handle : entry_point = ((InterpreterGenerator*) this)->generate_method_handle_entry();break; |
|
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1532 |
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1533 case Interpreter::java_lang_math_sin : // fall thru |
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1534 case Interpreter::java_lang_math_cos : // fall thru |
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1535 case Interpreter::java_lang_math_tan : // fall thru |
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1536 case Interpreter::java_lang_math_abs : // fall thru |
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1537 case Interpreter::java_lang_math_log : // fall thru |
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1538 case Interpreter::java_lang_math_log10 : // fall thru |
| 0 | 1539 case Interpreter::java_lang_math_sqrt : entry_point = ((InterpreterGenerator*) this)->generate_math_entry(kind); break; |
|
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1540 case Interpreter::java_lang_ref_reference_get |
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1541 : entry_point = ((InterpreterGenerator*)this)->generate_Reference_get_entry(); break; |
| 0 | 1542 default : ShouldNotReachHere(); break; |
| 1543 } | |
| 1544 | |
| 1545 if (entry_point) { | |
| 1546 return entry_point; | |
| 1547 } | |
| 1548 | |
| 1549 return ((InterpreterGenerator*) this)-> | |
| 1550 generate_normal_entry(synchronized); | |
| 1551 } | |
| 1552 | |
|
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1553 // These should never be compiled since the interpreter will prefer |
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1554 // the compiled version to the intrinsic version. |
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1555 bool AbstractInterpreter::can_be_compiled(methodHandle m) { |
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1556 switch (method_kind(m)) { |
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1557 case Interpreter::java_lang_math_sin : // fall thru |
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1558 case Interpreter::java_lang_math_cos : // fall thru |
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1559 case Interpreter::java_lang_math_tan : // fall thru |
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1560 case Interpreter::java_lang_math_abs : // fall thru |
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1561 case Interpreter::java_lang_math_log : // fall thru |
|
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1562 case Interpreter::java_lang_math_log10 : // fall thru |
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1563 case Interpreter::java_lang_math_sqrt : |
|
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1564 return false; |
|
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1565 default: |
|
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1566 return true; |
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1567 } |
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1568 } |
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1569 |
| 0 | 1570 // How much stack a method activation needs in words. |
| 1571 int AbstractInterpreter::size_top_interpreter_activation(methodOop method) { | |
| 1572 const int entry_size = frame::interpreter_frame_monitor_size(); | |
| 1573 | |
| 1574 // total overhead size: entry_size + (saved rbp thru expr stack | |
| 1575 // bottom). be sure to change this if you add/subtract anything | |
| 1576 // to/from the overhead area | |
| 1577 const int overhead_size = | |
| 1578 -(frame::interpreter_frame_initial_sp_offset) + entry_size; | |
| 1579 | |
| 1580 const int stub_code = frame::entry_frame_after_call_words; | |
| 710 | 1581 const int extra_stack = methodOopDesc::extra_stack_entries(); |
| 1582 const int method_stack = (method->max_locals() + method->max_stack() + extra_stack) * | |
| 1506 | 1583 Interpreter::stackElementWords; |
| 0 | 1584 return (overhead_size + method_stack + stub_code); |
| 1585 } | |
| 1586 | |
| 1587 int AbstractInterpreter::layout_activation(methodOop method, | |
| 1588 int tempcount, | |
| 1589 int popframe_extra_args, | |
| 1590 int moncount, | |
|
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1591 int caller_actual_parameters, |
| 0 | 1592 int callee_param_count, |
| 1593 int callee_locals, | |
| 1594 frame* caller, | |
| 1595 frame* interpreter_frame, | |
| 1596 bool is_top_frame) { | |
| 1597 // Note: This calculation must exactly parallel the frame setup | |
| 1598 // in AbstractInterpreterGenerator::generate_method_entry. | |
| 1599 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
| 1600 // The frame interpreter_frame, if not NULL, is guaranteed to be the | |
| 1601 // right size, as determined by a previous call to this method. | |
| 1602 // It is also guaranteed to be walkable even though it is in a skeletal state | |
| 1603 | |
| 1604 // fixed size of an interpreter frame: | |
| 1506 | 1605 int max_locals = method->max_locals() * Interpreter::stackElementWords; |
| 0 | 1606 int extra_locals = (method->max_locals() - method->size_of_parameters()) * |
| 1506 | 1607 Interpreter::stackElementWords; |
| 0 | 1608 |
| 1609 int overhead = frame::sender_sp_offset - | |
| 1610 frame::interpreter_frame_initial_sp_offset; | |
| 1611 // Our locals were accounted for by the caller (or last_frame_adjust | |
| 1612 // on the transistion) Since the callee parameters already account | |
| 1613 // for the callee's params we only need to account for the extra | |
| 1614 // locals. | |
| 1615 int size = overhead + | |
| 1506 | 1616 (callee_locals - callee_param_count)*Interpreter::stackElementWords + |
| 0 | 1617 moncount * frame::interpreter_frame_monitor_size() + |
| 1506 | 1618 tempcount* Interpreter::stackElementWords + popframe_extra_args; |
| 0 | 1619 if (interpreter_frame != NULL) { |
| 1620 #ifdef ASSERT | |
|
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1621 if (!EnableInvokeDynamic) |
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1622 // @@@ FIXME: Should we correct interpreter_frame_sender_sp in the calling sequences? |
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1623 // Probably, since deoptimization doesn't work yet. |
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1624 assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable"); |
| 0 | 1625 assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)"); |
| 1626 #endif | |
| 1627 | |
| 1628 interpreter_frame->interpreter_frame_set_method(method); | |
| 1629 // NOTE the difference in using sender_sp and | |
| 1630 // interpreter_frame_sender_sp interpreter_frame_sender_sp is | |
| 1631 // the original sp of the caller (the unextended_sp) and | |
| 1632 // sender_sp is fp+16 XXX | |
| 1633 intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; | |
| 1634 | |
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1635 #ifdef ASSERT |
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1636 if (caller->is_interpreted_frame()) { |
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1637 assert(locals < caller->fp() + frame::interpreter_frame_initial_sp_offset, "bad placement"); |
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1638 } |
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1639 #endif |
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1640 |
| 0 | 1641 interpreter_frame->interpreter_frame_set_locals(locals); |
| 1642 BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); | |
| 1643 BasicObjectLock* monbot = montop - moncount; | |
| 1644 interpreter_frame->interpreter_frame_set_monitor_end(monbot); | |
| 1645 | |
| 1646 // Set last_sp | |
| 1647 intptr_t* esp = (intptr_t*) monbot - | |
| 1506 | 1648 tempcount*Interpreter::stackElementWords - |
| 0 | 1649 popframe_extra_args; |
| 1650 interpreter_frame->interpreter_frame_set_last_sp(esp); | |
| 1651 | |
| 1652 // All frames but the initial (oldest) interpreter frame we fill in have | |
| 1653 // a value for sender_sp that allows walking the stack but isn't | |
| 1654 // truly correct. Correct the value here. | |
| 1655 if (extra_locals != 0 && | |
| 1656 interpreter_frame->sender_sp() == | |
| 1657 interpreter_frame->interpreter_frame_sender_sp()) { | |
| 1658 interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + | |
| 1659 extra_locals); | |
| 1660 } | |
| 1661 *interpreter_frame->interpreter_frame_cache_addr() = | |
| 1662 method->constants()->cache(); | |
| 1663 } | |
| 1664 return size; | |
| 1665 } | |
| 1666 | |
| 1667 //----------------------------------------------------------------------------- | |
| 1668 // Exceptions | |
| 1669 | |
| 1670 void TemplateInterpreterGenerator::generate_throw_exception() { | |
| 1671 // Entry point in previous activation (i.e., if the caller was | |
| 1672 // interpreted) | |
| 1673 Interpreter::_rethrow_exception_entry = __ pc(); | |
| 1674 // Restore sp to interpreter_frame_last_sp even though we are going | |
| 1675 // to empty the expression stack for the exception processing. | |
| 304 | 1676 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
| 0 | 1677 // rax: exception |
| 1678 // rdx: return address/pc that threw exception | |
| 1679 __ restore_bcp(); // r13 points to call/send | |
| 1680 __ restore_locals(); | |
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1681 __ reinit_heapbase(); // restore r12 as heapbase. |
| 0 | 1682 // Entry point for exceptions thrown within interpreter code |
| 1683 Interpreter::_throw_exception_entry = __ pc(); | |
| 1684 // expression stack is undefined here | |
| 1685 // rax: exception | |
| 1686 // r13: exception bcp | |
| 1687 __ verify_oop(rax); | |
| 304 | 1688 __ mov(c_rarg1, rax); |
| 0 | 1689 |
| 1690 // expression stack must be empty before entering the VM in case of | |
| 1691 // an exception | |
| 1692 __ empty_expression_stack(); | |
| 1693 // find exception handler address and preserve exception oop | |
| 1694 __ call_VM(rdx, | |
| 1695 CAST_FROM_FN_PTR(address, | |
| 1696 InterpreterRuntime::exception_handler_for_exception), | |
| 1697 c_rarg1); | |
| 1698 // rax: exception handler entry point | |
| 1699 // rdx: preserved exception oop | |
| 1700 // r13: bcp for exception handler | |
| 1701 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
| 1702 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
| 1703 | |
| 1704 // If the exception is not handled in the current frame the frame is | |
| 1705 // removed and the exception is rethrown (i.e. exception | |
| 1706 // continuation is _rethrow_exception). | |
| 1707 // | |
| 1708 // Note: At this point the bci is still the bxi for the instruction | |
| 1709 // which caused the exception and the expression stack is | |
| 1710 // empty. Thus, for any VM calls at this point, GC will find a legal | |
| 1711 // oop map (with empty expression stack). | |
| 1712 | |
| 1713 // In current activation | |
| 1714 // tos: exception | |
| 1715 // esi: exception bcp | |
| 1716 | |
| 1717 // | |
| 1718 // JVMTI PopFrame support | |
| 1719 // | |
| 1720 | |
| 1721 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
| 1722 __ empty_expression_stack(); | |
| 1723 // Set the popframe_processing bit in pending_popframe_condition | |
| 1724 // indicating that we are currently handling popframe, so that | |
| 1725 // call_VMs that may happen later do not trigger new popframe | |
| 1726 // handling cycles. | |
| 1727 __ movl(rdx, Address(r15_thread, JavaThread::popframe_condition_offset())); | |
| 1728 __ orl(rdx, JavaThread::popframe_processing_bit); | |
| 1729 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), rdx); | |
| 1730 | |
| 1731 { | |
| 1732 // Check to see whether we are returning to a deoptimized frame. | |
| 1733 // (The PopFrame call ensures that the caller of the popped frame is | |
| 1734 // either interpreted or compiled and deoptimizes it if compiled.) | |
| 1735 // In this case, we can't call dispatch_next() after the frame is | |
| 1736 // popped, but instead must save the incoming arguments and restore | |
| 1737 // them after deoptimization has occurred. | |
| 1738 // | |
| 1739 // Note that we don't compare the return PC against the | |
| 1740 // deoptimization blob's unpack entry because of the presence of | |
| 1741 // adapter frames in C2. | |
| 1742 Label caller_not_deoptimized; | |
| 304 | 1743 __ movptr(c_rarg1, Address(rbp, frame::return_addr_offset * wordSize)); |
| 0 | 1744 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
| 1745 InterpreterRuntime::interpreter_contains), c_rarg1); | |
| 1746 __ testl(rax, rax); | |
| 1747 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
| 1748 | |
| 1749 // Compute size of arguments for saving when returning to | |
| 1750 // deoptimized caller | |
| 1751 __ get_method(rax); | |
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1752 __ load_unsigned_short(rax, Address(rax, in_bytes(methodOopDesc:: |
| 0 | 1753 size_of_parameters_offset()))); |
| 1506 | 1754 __ shll(rax, Interpreter::logStackElementSize); |
| 0 | 1755 __ restore_locals(); // XXX do we need this? |
| 304 | 1756 __ subptr(r14, rax); |
| 1757 __ addptr(r14, wordSize); | |
| 0 | 1758 // Save these arguments |
| 1759 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, | |
| 1760 Deoptimization:: | |
| 1761 popframe_preserve_args), | |
| 1762 r15_thread, rax, r14); | |
| 1763 | |
| 1764 __ remove_activation(vtos, rdx, | |
| 1765 /* throw_monitor_exception */ false, | |
| 1766 /* install_monitor_exception */ false, | |
| 1767 /* notify_jvmdi */ false); | |
| 1768 | |
| 1769 // Inform deoptimization that it is responsible for restoring | |
| 1770 // these arguments | |
| 1771 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
| 1772 JavaThread::popframe_force_deopt_reexecution_bit); | |
| 1773 | |
| 1774 // Continue in deoptimization handler | |
| 1775 __ jmp(rdx); | |
| 1776 | |
| 1777 __ bind(caller_not_deoptimized); | |
| 1778 } | |
| 1779 | |
| 1780 __ remove_activation(vtos, rdx, /* rdx result (retaddr) is not used */ | |
| 1781 /* throw_monitor_exception */ false, | |
| 1782 /* install_monitor_exception */ false, | |
| 1783 /* notify_jvmdi */ false); | |
| 1784 | |
| 1785 // Finish with popframe handling | |
| 1786 // A previous I2C followed by a deoptimization might have moved the | |
| 1787 // outgoing arguments further up the stack. PopFrame expects the | |
| 1788 // mutations to those outgoing arguments to be preserved and other | |
| 1789 // constraints basically require this frame to look exactly as | |
| 1790 // though it had previously invoked an interpreted activation with | |
| 1791 // no space between the top of the expression stack (current | |
| 1792 // last_sp) and the top of stack. Rather than force deopt to | |
| 1793 // maintain this kind of invariant all the time we call a small | |
| 1794 // fixup routine to move the mutated arguments onto the top of our | |
| 1795 // expression stack if necessary. | |
| 304 | 1796 __ mov(c_rarg1, rsp); |
| 1797 __ movptr(c_rarg2, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
| 0 | 1798 // PC must point into interpreter here |
| 1799 __ set_last_Java_frame(noreg, rbp, __ pc()); | |
| 1800 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), r15_thread, c_rarg1, c_rarg2); | |
| 1801 __ reset_last_Java_frame(true, true); | |
| 1802 // Restore the last_sp and null it out | |
| 304 | 1803 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
| 1804 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); | |
| 0 | 1805 |
| 1806 __ restore_bcp(); // XXX do we need this? | |
| 1807 __ restore_locals(); // XXX do we need this? | |
| 1808 // The method data pointer was incremented already during | |
| 1809 // call profiling. We have to restore the mdp for the current bcp. | |
| 1810 if (ProfileInterpreter) { | |
| 1811 __ set_method_data_pointer_for_bcp(); | |
| 1812 } | |
| 1813 | |
| 1814 // Clear the popframe condition flag | |
| 1815 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
| 1816 JavaThread::popframe_inactive); | |
| 1817 | |
| 1818 __ dispatch_next(vtos); | |
| 1819 // end of PopFrame support | |
| 1820 | |
| 1821 Interpreter::_remove_activation_entry = __ pc(); | |
| 1822 | |
| 1823 // preserve exception over this code sequence | |
| 1824 __ pop_ptr(rax); | |
| 304 | 1825 __ movptr(Address(r15_thread, JavaThread::vm_result_offset()), rax); |
| 0 | 1826 // remove the activation (without doing throws on illegalMonitorExceptions) |
| 1827 __ remove_activation(vtos, rdx, false, true, false); | |
| 1828 // restore exception | |
| 304 | 1829 __ movptr(rax, Address(r15_thread, JavaThread::vm_result_offset())); |
| 1830 __ movptr(Address(r15_thread, JavaThread::vm_result_offset()), (int32_t)NULL_WORD); | |
| 0 | 1831 __ verify_oop(rax); |
| 1832 | |
| 1833 // In between activations - previous activation type unknown yet | |
| 1834 // compute continuation point - the continuation point expects the | |
| 1835 // following registers set up: | |
| 1836 // | |
| 1837 // rax: exception | |
| 1838 // rdx: return address/pc that threw exception | |
| 1839 // rsp: expression stack of caller | |
| 1840 // rbp: ebp of caller | |
| 304 | 1841 __ push(rax); // save exception |
| 1842 __ push(rdx); // save return address | |
| 0 | 1843 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
| 1844 SharedRuntime::exception_handler_for_return_address), | |
| 1295 | 1845 r15_thread, rdx); |
| 304 | 1846 __ mov(rbx, rax); // save exception handler |
| 1847 __ pop(rdx); // restore return address | |
| 1848 __ pop(rax); // restore exception | |
| 0 | 1849 // Note that an "issuing PC" is actually the next PC after the call |
| 1850 __ jmp(rbx); // jump to exception | |
| 1851 // handler of caller | |
| 1852 } | |
| 1853 | |
| 1854 | |
| 1855 // | |
| 1856 // JVMTI ForceEarlyReturn support | |
| 1857 // | |
| 1858 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
| 1859 address entry = __ pc(); | |
| 1860 | |
| 1861 __ restore_bcp(); | |
| 1862 __ restore_locals(); | |
| 1863 __ empty_expression_stack(); | |
| 1864 __ load_earlyret_value(state); | |
| 1865 | |
| 304 | 1866 __ movptr(rdx, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
| 0 | 1867 Address cond_addr(rdx, JvmtiThreadState::earlyret_state_offset()); |
| 1868 | |
| 1869 // Clear the earlyret state | |
| 1870 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
| 1871 | |
| 1872 __ remove_activation(state, rsi, | |
| 1873 false, /* throw_monitor_exception */ | |
| 1874 false, /* install_monitor_exception */ | |
| 1875 true); /* notify_jvmdi */ | |
| 1876 __ jmp(rsi); | |
| 1877 | |
| 1878 return entry; | |
| 1879 } // end of ForceEarlyReturn support | |
| 1880 | |
| 1881 | |
| 1882 //----------------------------------------------------------------------------- | |
| 1883 // Helper for vtos entry point generation | |
| 1884 | |
| 1885 void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t, | |
| 1886 address& bep, | |
| 1887 address& cep, | |
| 1888 address& sep, | |
| 1889 address& aep, | |
| 1890 address& iep, | |
| 1891 address& lep, | |
| 1892 address& fep, | |
| 1893 address& dep, | |
| 1894 address& vep) { | |
| 1895 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
| 1896 Label L; | |
| 1897 aep = __ pc(); __ push_ptr(); __ jmp(L); | |
| 1898 fep = __ pc(); __ push_f(); __ jmp(L); | |
| 1899 dep = __ pc(); __ push_d(); __ jmp(L); | |
| 1900 lep = __ pc(); __ push_l(); __ jmp(L); | |
| 1901 bep = cep = sep = | |
| 1902 iep = __ pc(); __ push_i(); | |
| 1903 vep = __ pc(); | |
| 1904 __ bind(L); | |
| 1905 generate_and_dispatch(t); | |
| 1906 } | |
| 1907 | |
| 1908 | |
| 1909 //----------------------------------------------------------------------------- | |
| 1910 // Generation of individual instructions | |
| 1911 | |
| 1912 // helpers for generate_and_dispatch | |
| 1913 | |
| 1914 | |
| 1915 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
| 1916 : TemplateInterpreterGenerator(code) { | |
| 1917 generate_all(); // down here so it can be "virtual" | |
| 1918 } | |
| 1919 | |
| 1920 //----------------------------------------------------------------------------- | |
| 1921 | |
| 1922 // Non-product code | |
| 1923 #ifndef PRODUCT | |
| 1924 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
| 1925 address entry = __ pc(); | |
| 1926 | |
| 1927 __ push(state); | |
| 304 | 1928 __ push(c_rarg0); |
| 1929 __ push(c_rarg1); | |
| 1930 __ push(c_rarg2); | |
| 1931 __ push(c_rarg3); | |
| 1932 __ mov(c_rarg2, rax); // Pass itos | |
| 0 | 1933 #ifdef _WIN64 |
| 1934 __ movflt(xmm3, xmm0); // Pass ftos | |
| 1935 #endif | |
| 1936 __ call_VM(noreg, | |
| 1937 CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), | |
| 1938 c_rarg1, c_rarg2, c_rarg3); | |
| 304 | 1939 __ pop(c_rarg3); |
| 1940 __ pop(c_rarg2); | |
| 1941 __ pop(c_rarg1); | |
| 1942 __ pop(c_rarg0); | |
| 0 | 1943 __ pop(state); |
| 1944 __ ret(0); // return from result handler | |
| 1945 | |
| 1946 return entry; | |
| 1947 } | |
| 1948 | |
| 1949 void TemplateInterpreterGenerator::count_bytecode() { | |
| 1950 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); | |
| 1951 } | |
| 1952 | |
| 1953 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
| 1954 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); | |
| 1955 } | |
| 1956 | |
| 1957 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
| 1958 __ mov32(rbx, ExternalAddress((address) &BytecodePairHistogram::_index)); | |
| 1959 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
| 1960 __ orl(rbx, | |
| 1961 ((int) t->bytecode()) << | |
| 1962 BytecodePairHistogram::log2_number_of_codes); | |
| 1963 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
| 1964 __ lea(rscratch1, ExternalAddress((address) BytecodePairHistogram::_counters)); | |
| 1965 __ incrementl(Address(rscratch1, rbx, Address::times_4)); | |
| 1966 } | |
| 1967 | |
| 1968 | |
| 1969 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
| 1970 // Call a little run-time stub to avoid blow-up for each bytecode. | |
| 1971 // The run-time runtime saves the right registers, depending on | |
| 1972 // the tosca in-state for the given template. | |
| 1973 | |
| 1974 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
| 1975 "entry must have been generated"); | |
|
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1976 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
| 304 | 1977 __ andptr(rsp, -16); // align stack as required by ABI |
| 0 | 1978 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); |
| 304 | 1979 __ mov(rsp, r12); // restore sp |
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1980 __ reinit_heapbase(); |
| 0 | 1981 } |
| 1982 | |
| 1983 | |
| 1984 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
| 1985 Label L; | |
| 1986 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
| 1987 StopInterpreterAt); | |
| 1988 __ jcc(Assembler::notEqual, L); | |
| 1989 __ int3(); | |
| 1990 __ bind(L); | |
| 1991 } | |
| 1992 #endif // !PRODUCT | |
| 304 | 1993 #endif // ! CC_INTERP |