Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateInterpreter_x86_64.cpp @ 7402:fd74228fd5ca
8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
Summary: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
Reviewed-by: coleenp, minqi, jrose
| author | jiangli |
|---|---|
| date | Tue, 11 Dec 2012 12:41:31 -0500 |
| parents | cd3d6a6b95d9 |
| children | 989155e2d07a db9981fd3124 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
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26 #include "asm/macroAssembler.hpp" |
| 1972 | 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" | |
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33 #include "oops/methodData.hpp" |
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34 #include "oops/method.hpp" |
| 1972 | 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, |
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188 in_bytes(ConstantPoolCache::base_offset()) + |
| 0 | 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) { | |
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302 const Address invocation_counter(rbx, in_bytes(Method::invocation_counter_offset()) + |
| 1783 | 303 in_bytes(InvocationCounter::counter_offset())); |
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304 // Note: In tiered we increment either counters in Method* or in MDO depending if we're profiling or not. |
| 1783 | 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? | |
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311 __ movptr(rax, Address(rbx, Method::method_data_offset())); |
| 1783 | 312 __ testptr(rax, rax); |
| 313 __ jccb(Assembler::zero, no_mdo); | |
| 314 // Increment counter in the MDO | |
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315 const Address mdo_invocation_counter(rax, in_bytes(MethodData::invocation_counter_offset()) + |
| 1783 | 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); | |
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321 // Increment counter in Method* (we don't need to load it, it's in ecx). |
| 1783 | 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, | |
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326 Method::backedge_counter_offset() + |
| 0 | 327 InvocationCounter::counter_offset()); |
| 328 | |
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329 if (ProfileInterpreter) { // %%% Merge this into MethodData* |
| 1783 | 330 __ incrementl(Address(rbx, |
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331 Method::interpreter_invocation_counter_offset())); |
| 1783 | 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 // InterpreterRuntime::frequency_counter_overflow takes two | |
| 373 // arguments, the first (thread) is passed by call_VM, the second | |
| 374 // indicates if the counter overflow occurs at a backwards branch | |
| 375 // (NULL bcp). We pass zero for it. The call returns the address | |
| 376 // of the verified entry point for the method or NULL if the | |
| 377 // compilation did not complete (either went background or bailed | |
| 378 // out). | |
| 379 __ movl(c_rarg1, 0); | |
| 380 __ call_VM(noreg, | |
| 381 CAST_FROM_FN_PTR(address, | |
| 382 InterpreterRuntime::frequency_counter_overflow), | |
| 383 c_rarg1); | |
| 384 | |
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385 __ movptr(rbx, Address(rbp, method_offset)); // restore Method* |
| 0 | 386 // Preserve invariant that r13/r14 contain bcp/locals of sender frame |
| 387 // and jump to the interpreted entry. | |
| 388 __ jmp(*do_continue, relocInfo::none); | |
| 389 } | |
| 390 | |
| 391 // See if we've got enough room on the stack for locals plus overhead. | |
| 392 // The expression stack grows down incrementally, so the normal guard | |
| 393 // page mechanism will work for that. | |
| 394 // | |
| 395 // NOTE: Since the additional locals are also always pushed (wasn't | |
| 396 // obvious in generate_method_entry) so the guard should work for them | |
| 397 // too. | |
| 398 // | |
| 399 // Args: | |
| 400 // rdx: number of additional locals this frame needs (what we must check) | |
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401 // rbx: Method* |
| 0 | 402 // |
| 403 // Kills: | |
| 404 // rax | |
| 405 void InterpreterGenerator::generate_stack_overflow_check(void) { | |
| 406 | |
| 407 // monitor entry size: see picture of stack set | |
| 408 // (generate_method_entry) and frame_amd64.hpp | |
| 409 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 410 | |
| 411 // total overhead size: entry_size + (saved rbp through expr stack | |
| 412 // bottom). be sure to change this if you add/subtract anything | |
| 413 // to/from the overhead area | |
| 414 const int overhead_size = | |
| 415 -(frame::interpreter_frame_initial_sp_offset * wordSize) + entry_size; | |
| 416 | |
| 417 const int page_size = os::vm_page_size(); | |
| 418 | |
| 419 Label after_frame_check; | |
| 420 | |
| 421 // see if the frame is greater than one page in size. If so, | |
| 422 // then we need to verify there is enough stack space remaining | |
| 423 // for the additional locals. | |
| 1506 | 424 __ cmpl(rdx, (page_size - overhead_size) / Interpreter::stackElementSize); |
| 0 | 425 __ jcc(Assembler::belowEqual, after_frame_check); |
| 426 | |
| 427 // compute rsp as if this were going to be the last frame on | |
| 428 // the stack before the red zone | |
| 429 | |
| 430 const Address stack_base(r15_thread, Thread::stack_base_offset()); | |
| 431 const Address stack_size(r15_thread, Thread::stack_size_offset()); | |
| 432 | |
| 433 // locals + overhead, in bytes | |
| 304 | 434 __ mov(rax, rdx); |
| 1506 | 435 __ shlptr(rax, Interpreter::logStackElementSize); // 2 slots per parameter. |
| 304 | 436 __ addptr(rax, overhead_size); |
| 0 | 437 |
| 438 #ifdef ASSERT | |
| 439 Label stack_base_okay, stack_size_okay; | |
| 440 // verify that thread stack base is non-zero | |
| 304 | 441 __ cmpptr(stack_base, (int32_t)NULL_WORD); |
| 0 | 442 __ jcc(Assembler::notEqual, stack_base_okay); |
| 443 __ stop("stack base is zero"); | |
| 444 __ bind(stack_base_okay); | |
| 445 // verify that thread stack size is non-zero | |
| 304 | 446 __ cmpptr(stack_size, 0); |
| 0 | 447 __ jcc(Assembler::notEqual, stack_size_okay); |
| 448 __ stop("stack size is zero"); | |
| 449 __ bind(stack_size_okay); | |
| 450 #endif | |
| 451 | |
| 452 // Add stack base to locals and subtract stack size | |
| 304 | 453 __ addptr(rax, stack_base); |
| 454 __ subptr(rax, stack_size); | |
| 0 | 455 |
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456 // Use the maximum number of pages we might bang. |
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457 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : |
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458 (StackRedPages+StackYellowPages); |
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459 |
| 0 | 460 // add in the red and yellow zone sizes |
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461 __ addptr(rax, max_pages * page_size); |
| 0 | 462 |
| 463 // check against the current stack bottom | |
| 304 | 464 __ cmpptr(rsp, rax); |
| 0 | 465 __ jcc(Assembler::above, after_frame_check); |
| 466 | |
| 4743 | 467 // Restore sender's sp as SP. This is necessary if the sender's |
| 468 // frame is an extended compiled frame (see gen_c2i_adapter()) | |
| 469 // and safer anyway in case of JSR292 adaptations. | |
| 470 | |
| 471 __ pop(rax); // return address must be moved if SP is changed | |
| 472 __ mov(rsp, r13); | |
| 473 __ push(rax); | |
| 474 | |
| 475 // Note: the restored frame is not necessarily interpreted. | |
| 476 // Use the shared runtime version of the StackOverflowError. | |
| 477 assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated"); | |
| 478 __ jump(ExternalAddress(StubRoutines::throw_StackOverflowError_entry())); | |
| 0 | 479 |
| 480 // all done with frame size check | |
| 481 __ bind(after_frame_check); | |
| 482 } | |
| 483 | |
| 484 // Allocate monitor and lock method (asm interpreter) | |
| 485 // | |
| 486 // Args: | |
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487 // rbx: Method* |
| 0 | 488 // r14: locals |
| 489 // | |
| 490 // Kills: | |
| 491 // rax | |
| 492 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, ...(param regs) | |
| 493 // rscratch1, rscratch2 (scratch regs) | |
| 494 void InterpreterGenerator::lock_method(void) { | |
| 495 // synchronize method | |
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496 const Address access_flags(rbx, Method::access_flags_offset()); |
| 0 | 497 const Address monitor_block_top( |
| 498 rbp, | |
| 499 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 500 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 501 | |
| 502 #ifdef ASSERT | |
| 503 { | |
| 504 Label L; | |
| 505 __ movl(rax, access_flags); | |
| 506 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 507 __ jcc(Assembler::notZero, L); | |
| 508 __ stop("method doesn't need synchronization"); | |
| 509 __ bind(L); | |
| 510 } | |
| 511 #endif // ASSERT | |
| 512 | |
| 513 // get synchronization object | |
| 514 { | |
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515 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
| 0 | 516 Label done; |
| 517 __ movl(rax, access_flags); | |
| 518 __ testl(rax, JVM_ACC_STATIC); | |
| 519 // get receiver (assume this is frequent case) | |
| 304 | 520 __ movptr(rax, Address(r14, Interpreter::local_offset_in_bytes(0))); |
| 0 | 521 __ jcc(Assembler::zero, done); |
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522 __ movptr(rax, Address(rbx, Method::const_offset())); |
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523 __ movptr(rax, Address(rax, ConstMethod::constants_offset())); |
| 304 | 524 __ movptr(rax, Address(rax, |
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525 ConstantPool::pool_holder_offset_in_bytes())); |
| 304 | 526 __ movptr(rax, Address(rax, mirror_offset)); |
| 0 | 527 |
| 528 #ifdef ASSERT | |
| 529 { | |
| 530 Label L; | |
| 304 | 531 __ testptr(rax, rax); |
| 0 | 532 __ jcc(Assembler::notZero, L); |
| 533 __ stop("synchronization object is NULL"); | |
| 534 __ bind(L); | |
| 535 } | |
| 536 #endif // ASSERT | |
| 537 | |
| 538 __ bind(done); | |
| 539 } | |
| 540 | |
| 541 // add space for monitor & lock | |
| 304 | 542 __ subptr(rsp, entry_size); // add space for a monitor entry |
| 543 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
| 0 | 544 // store object |
| 304 | 545 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); |
| 546 __ movptr(c_rarg1, rsp); // object address | |
| 0 | 547 __ lock_object(c_rarg1); |
| 548 } | |
| 549 | |
| 550 // Generate a fixed interpreter frame. This is identical setup for | |
| 551 // interpreted methods and for native methods hence the shared code. | |
| 552 // | |
| 553 // Args: | |
| 554 // rax: return address | |
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555 // rbx: Method* |
| 0 | 556 // r14: pointer to locals |
| 557 // r13: sender sp | |
| 558 // rdx: cp cache | |
| 559 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
| 560 // initialize fixed part of activation frame | |
| 304 | 561 __ push(rax); // save return address |
| 0 | 562 __ enter(); // save old & set new rbp |
| 304 | 563 __ push(r13); // set sender sp |
| 564 __ push((int)NULL_WORD); // leave last_sp as null | |
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565 __ movptr(r13, Address(rbx, Method::const_offset())); // get ConstMethod* |
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566 __ lea(r13, Address(r13, ConstMethod::codes_offset())); // get codebase |
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567 __ push(rbx); // save Method* |
| 0 | 568 if (ProfileInterpreter) { |
| 569 Label method_data_continue; | |
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570 __ movptr(rdx, Address(rbx, in_bytes(Method::method_data_offset()))); |
| 304 | 571 __ testptr(rdx, rdx); |
| 0 | 572 __ jcc(Assembler::zero, method_data_continue); |
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573 __ addptr(rdx, in_bytes(MethodData::data_offset())); |
| 0 | 574 __ bind(method_data_continue); |
| 304 | 575 __ push(rdx); // set the mdp (method data pointer) |
| 0 | 576 } else { |
| 304 | 577 __ push(0); |
| 0 | 578 } |
| 579 | |
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580 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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581 __ movptr(rdx, Address(rdx, ConstMethod::constants_offset())); |
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582 __ movptr(rdx, Address(rdx, ConstantPool::cache_offset_in_bytes())); |
| 304 | 583 __ push(rdx); // set constant pool cache |
| 584 __ push(r14); // set locals pointer | |
| 0 | 585 if (native_call) { |
| 304 | 586 __ push(0); // no bcp |
| 0 | 587 } else { |
| 304 | 588 __ push(r13); // set bcp |
| 0 | 589 } |
| 304 | 590 __ push(0); // reserve word for pointer to expression stack bottom |
| 591 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
| 0 | 592 } |
| 593 | |
| 594 // End of helpers | |
| 595 | |
| 304 | 596 // Various method entries |
| 597 //------------------------------------------------------------------------------------------------------------------------ | |
| 598 // | |
| 599 // | |
| 600 | |
| 601 // Call an accessor method (assuming it is resolved, otherwise drop | |
| 602 // into vanilla (slow path) entry | |
| 603 address InterpreterGenerator::generate_accessor_entry(void) { | |
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604 // rbx: Method* |
| 304 | 605 |
| 606 // r13: senderSP must preserver for slow path, set SP to it on fast path | |
| 607 | |
| 608 address entry_point = __ pc(); | |
| 609 Label xreturn_path; | |
| 610 | |
| 611 // do fastpath for resolved accessor methods | |
| 612 if (UseFastAccessorMethods) { | |
| 613 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites | |
| 614 // thereof; parameter size = 1 | |
| 615 // Note: We can only use this code if the getfield has been resolved | |
| 616 // and if we don't have a null-pointer exception => check for | |
| 617 // these conditions first and use slow path if necessary. | |
| 618 Label slow_path; | |
| 619 // If we need a safepoint check, generate full interpreter entry. | |
| 620 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
| 621 SafepointSynchronize::_not_synchronized); | |
| 622 | |
| 623 __ jcc(Assembler::notEqual, slow_path); | |
| 624 // rbx: method | |
| 625 __ movptr(rax, Address(rsp, wordSize)); | |
| 626 | |
| 627 // check if local 0 != NULL and read field | |
| 628 __ testptr(rax, rax); | |
| 629 __ jcc(Assembler::zero, slow_path); | |
| 630 | |
| 631 // read first instruction word and extract bytecode @ 1 and index @ 2 | |
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632 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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633 __ movptr(rdi, Address(rdx, ConstMethod::constants_offset())); |
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634 __ movl(rdx, Address(rdx, ConstMethod::codes_offset())); |
| 304 | 635 // Shift codes right to get the index on the right. |
| 636 // The bytecode fetched looks like <index><0xb4><0x2a> | |
| 637 __ shrl(rdx, 2 * BitsPerByte); | |
| 638 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
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639 __ movptr(rdi, Address(rdi, ConstantPool::cache_offset_in_bytes())); |
| 304 | 640 |
| 641 // rax: local 0 | |
| 642 // rbx: method | |
| 643 // rdx: constant pool cache index | |
| 644 // rdi: constant pool cache | |
| 645 | |
| 646 // check if getfield has been resolved and read constant pool cache entry | |
| 647 // check the validity of the cache entry by testing whether _indices field | |
| 648 // contains Bytecode::_getfield in b1 byte. | |
| 649 assert(in_words(ConstantPoolCacheEntry::size()) == 4, | |
| 650 "adjust shift below"); | |
| 651 __ movl(rcx, | |
| 652 Address(rdi, | |
| 653 rdx, | |
| 654 Address::times_8, | |
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655 ConstantPoolCache::base_offset() + |
| 304 | 656 ConstantPoolCacheEntry::indices_offset())); |
| 657 __ shrl(rcx, 2 * BitsPerByte); | |
| 658 __ andl(rcx, 0xFF); | |
| 659 __ cmpl(rcx, Bytecodes::_getfield); | |
| 660 __ jcc(Assembler::notEqual, slow_path); | |
| 661 | |
| 662 // Note: constant pool entry is not valid before bytecode is resolved | |
| 663 __ movptr(rcx, | |
| 664 Address(rdi, | |
| 665 rdx, | |
| 666 Address::times_8, | |
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667 ConstantPoolCache::base_offset() + |
| 304 | 668 ConstantPoolCacheEntry::f2_offset())); |
| 669 // edx: flags | |
| 670 __ movl(rdx, | |
| 671 Address(rdi, | |
| 672 rdx, | |
| 673 Address::times_8, | |
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674 ConstantPoolCache::base_offset() + |
| 304 | 675 ConstantPoolCacheEntry::flags_offset())); |
| 676 | |
| 677 Label notObj, notInt, notByte, notShort; | |
| 678 const Address field_address(rax, rcx, Address::times_1); | |
| 679 | |
| 680 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
| 681 // because they are different sizes. | |
| 682 // Use the type from the constant pool cache | |
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683 __ shrl(rdx, ConstantPoolCacheEntry::tos_state_shift); |
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684 // Make sure we don't need to mask edx after the above shift |
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685 ConstantPoolCacheEntry::verify_tos_state_shift(); |
| 304 | 686 |
| 687 __ cmpl(rdx, atos); | |
| 688 __ jcc(Assembler::notEqual, notObj); | |
| 689 // atos | |
| 690 __ load_heap_oop(rax, field_address); | |
| 691 __ jmp(xreturn_path); | |
| 692 | |
| 693 __ bind(notObj); | |
| 694 __ cmpl(rdx, itos); | |
| 695 __ jcc(Assembler::notEqual, notInt); | |
| 696 // itos | |
| 697 __ movl(rax, field_address); | |
| 698 __ jmp(xreturn_path); | |
| 699 | |
| 700 __ bind(notInt); | |
| 701 __ cmpl(rdx, btos); | |
| 702 __ jcc(Assembler::notEqual, notByte); | |
| 703 // btos | |
| 704 __ load_signed_byte(rax, field_address); | |
| 705 __ jmp(xreturn_path); | |
| 706 | |
| 707 __ bind(notByte); | |
| 708 __ cmpl(rdx, stos); | |
| 709 __ jcc(Assembler::notEqual, notShort); | |
| 710 // stos | |
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711 __ load_signed_short(rax, field_address); |
| 304 | 712 __ jmp(xreturn_path); |
| 713 | |
| 714 __ bind(notShort); | |
| 715 #ifdef ASSERT | |
| 716 Label okay; | |
| 717 __ cmpl(rdx, ctos); | |
| 718 __ jcc(Assembler::equal, okay); | |
| 719 __ stop("what type is this?"); | |
| 720 __ bind(okay); | |
| 721 #endif | |
| 722 // ctos | |
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723 __ load_unsigned_short(rax, field_address); |
| 304 | 724 |
| 725 __ bind(xreturn_path); | |
| 726 | |
| 727 // _ireturn/_areturn | |
| 728 __ pop(rdi); | |
| 729 __ mov(rsp, r13); | |
| 730 __ jmp(rdi); | |
| 731 __ ret(0); | |
| 732 | |
| 733 // generate a vanilla interpreter entry as the slow path | |
| 734 __ bind(slow_path); | |
| 735 (void) generate_normal_entry(false); | |
| 736 } else { | |
| 737 (void) generate_normal_entry(false); | |
| 738 } | |
| 739 | |
| 740 return entry_point; | |
| 741 } | |
| 742 | |
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743 // Method entry for java.lang.ref.Reference.get. |
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744 address InterpreterGenerator::generate_Reference_get_entry(void) { |
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745 #ifndef SERIALGC |
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746 // Code: _aload_0, _getfield, _areturn |
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747 // parameter size = 1 |
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748 // |
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749 // The code that gets generated by this routine is split into 2 parts: |
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750 // 1. The "intrinsified" code for G1 (or any SATB based GC), |
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751 // 2. The slow path - which is an expansion of the regular method entry. |
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752 // |
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753 // Notes:- |
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754 // * In the G1 code we do not check whether we need to block for |
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755 // a safepoint. If G1 is enabled then we must execute the specialized |
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756 // code for Reference.get (except when the Reference object is null) |
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757 // so that we can log the value in the referent field with an SATB |
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758 // update buffer. |
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759 // If the code for the getfield template is modified so that the |
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760 // G1 pre-barrier code is executed when the current method is |
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761 // Reference.get() then going through the normal method entry |
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762 // will be fine. |
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763 // * The G1 code can, however, check the receiver object (the instance |
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764 // of java.lang.Reference) and jump to the slow path if null. If the |
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765 // Reference object is null then we obviously cannot fetch the referent |
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766 // and so we don't need to call the G1 pre-barrier. Thus we can use the |
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767 // regular method entry code to generate the NPE. |
|
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768 // |
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769 // This code is based on generate_accessor_enty. |
|
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770 // |
|
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771 // rbx: Method* |
|
3249
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|
772 |
|
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773 // r13: senderSP must preserve for slow path, set SP to it on fast path |
|
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|
774 |
|
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775 address entry = __ pc(); |
|
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|
776 |
|
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777 const int referent_offset = java_lang_ref_Reference::referent_offset; |
|
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778 guarantee(referent_offset > 0, "referent offset not initialized"); |
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|
779 |
|
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|
780 if (UseG1GC) { |
|
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781 Label slow_path; |
|
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782 // rbx: method |
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783 |
|
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784 // Check if local 0 != NULL |
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785 // If the receiver is null then it is OK to jump to the slow path. |
|
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786 __ movptr(rax, Address(rsp, wordSize)); |
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787 |
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788 __ testptr(rax, rax); |
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789 __ jcc(Assembler::zero, slow_path); |
|
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|
790 |
|
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791 // rax: local 0 |
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792 // rbx: method (but can be used as scratch now) |
|
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793 // rdx: scratch |
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794 // rdi: scratch |
|
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795 |
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796 // Generate the G1 pre-barrier code to log the value of |
|
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797 // the referent field in an SATB buffer. |
|
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|
798 |
|
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799 // Load the value of the referent field. |
|
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800 const Address field_address(rax, referent_offset); |
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801 __ load_heap_oop(rax, field_address); |
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|
802 |
|
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803 // Generate the G1 pre-barrier code to log the value of |
|
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804 // the referent field in an SATB buffer. |
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805 __ g1_write_barrier_pre(noreg /* obj */, |
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806 rax /* pre_val */, |
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807 r15_thread /* thread */, |
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808 rbx /* tmp */, |
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809 true /* tosca_live */, |
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810 true /* expand_call */); |
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811 |
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812 // _areturn |
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813 __ pop(rdi); // get return address |
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814 __ mov(rsp, r13); // set sp to sender sp |
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815 __ jmp(rdi); |
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816 __ ret(0); |
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817 |
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818 // generate a vanilla interpreter entry as the slow path |
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819 __ bind(slow_path); |
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820 (void) generate_normal_entry(false); |
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821 |
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822 return entry; |
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823 } |
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824 #endif // SERIALGC |
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825 |
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826 // If G1 is not enabled then attempt to go through the accessor entry point |
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827 // Reference.get is an accessor |
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828 return generate_accessor_entry(); |
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829 } |
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830 |
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831 |
| 0 | 832 // Interpreter stub for calling a native method. (asm interpreter) |
| 833 // This sets up a somewhat different looking stack for calling the | |
| 834 // native method than the typical interpreter frame setup. | |
| 835 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
| 836 // determine code generation flags | |
| 837 bool inc_counter = UseCompiler || CountCompiledCalls; | |
| 838 | |
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839 // rbx: Method* |
| 0 | 840 // r13: sender sp |
| 841 | |
| 842 address entry_point = __ pc(); | |
| 843 | |
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844 const Address constMethod (rbx, Method::const_offset()); |
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845 const Address invocation_counter(rbx, Method:: |
| 0 | 846 invocation_counter_offset() + |
| 847 InvocationCounter::counter_offset()); | |
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848 const Address access_flags (rbx, Method::access_flags_offset()); |
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849 const Address size_of_parameters(rcx, ConstMethod:: |
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850 size_of_parameters_offset()); |
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851 |
| 0 | 852 |
| 853 // get parameter size (always needed) | |
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854 __ movptr(rcx, constMethod); |
|
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855 __ load_unsigned_short(rcx, size_of_parameters); |
| 0 | 856 |
| 857 // native calls don't need the stack size check since they have no | |
| 858 // expression stack and the arguments are already on the stack and | |
| 859 // we only add a handful of words to the stack | |
| 860 | |
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861 // rbx: Method* |
| 0 | 862 // rcx: size of parameters |
| 863 // r13: sender sp | |
| 304 | 864 __ pop(rax); // get return address |
| 0 | 865 |
| 866 // for natives the size of locals is zero | |
| 867 | |
| 868 // compute beginning of parameters (r14) | |
| 304 | 869 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
| 0 | 870 |
| 871 // add 2 zero-initialized slots for native calls | |
| 872 // initialize result_handler slot | |
| 304 | 873 __ push((int) NULL_WORD); |
| 0 | 874 // slot for oop temp |
| 875 // (static native method holder mirror/jni oop result) | |
| 304 | 876 __ push((int) NULL_WORD); |
| 0 | 877 |
| 878 if (inc_counter) { | |
| 879 __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
| 880 } | |
| 881 | |
| 882 // initialize fixed part of activation frame | |
| 883 generate_fixed_frame(true); | |
| 884 | |
| 885 // make sure method is native & not abstract | |
| 886 #ifdef ASSERT | |
| 887 __ movl(rax, access_flags); | |
| 888 { | |
| 889 Label L; | |
| 890 __ testl(rax, JVM_ACC_NATIVE); | |
| 891 __ jcc(Assembler::notZero, L); | |
| 892 __ stop("tried to execute non-native method as native"); | |
| 893 __ bind(L); | |
| 894 } | |
| 895 { | |
| 896 Label L; | |
| 897 __ testl(rax, JVM_ACC_ABSTRACT); | |
| 898 __ jcc(Assembler::zero, L); | |
| 899 __ stop("tried to execute abstract method in interpreter"); | |
| 900 __ bind(L); | |
| 901 } | |
| 902 #endif | |
| 903 | |
| 904 // Since at this point in the method invocation the exception handler | |
| 905 // would try to exit the monitor of synchronized methods which hasn't | |
| 906 // been entered yet, we set the thread local variable | |
| 907 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
| 908 // check this flag. | |
| 909 | |
| 910 const Address do_not_unlock_if_synchronized(r15_thread, | |
| 911 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 912 __ movbool(do_not_unlock_if_synchronized, true); | |
| 913 | |
| 914 // increment invocation count & check for overflow | |
| 915 Label invocation_counter_overflow; | |
| 916 if (inc_counter) { | |
| 917 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
| 918 } | |
| 919 | |
| 920 Label continue_after_compile; | |
| 921 __ bind(continue_after_compile); | |
| 922 | |
| 923 bang_stack_shadow_pages(true); | |
| 924 | |
| 925 // reset the _do_not_unlock_if_synchronized flag | |
| 926 __ movbool(do_not_unlock_if_synchronized, false); | |
| 927 | |
| 928 // check for synchronized methods | |
| 929 // Must happen AFTER invocation_counter check and stack overflow check, | |
| 930 // so method is not locked if overflows. | |
| 931 if (synchronized) { | |
| 932 lock_method(); | |
| 933 } else { | |
| 934 // no synchronization necessary | |
| 935 #ifdef ASSERT | |
| 936 { | |
| 937 Label L; | |
| 938 __ movl(rax, access_flags); | |
| 939 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 940 __ jcc(Assembler::zero, L); | |
| 941 __ stop("method needs synchronization"); | |
| 942 __ bind(L); | |
| 943 } | |
| 944 #endif | |
| 945 } | |
| 946 | |
| 947 // start execution | |
| 948 #ifdef ASSERT | |
| 949 { | |
| 950 Label L; | |
| 951 const Address monitor_block_top(rbp, | |
| 952 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 304 | 953 __ movptr(rax, monitor_block_top); |
| 954 __ cmpptr(rax, rsp); | |
| 0 | 955 __ jcc(Assembler::equal, L); |
| 956 __ stop("broken stack frame setup in interpreter"); | |
| 957 __ bind(L); | |
| 958 } | |
| 959 #endif | |
| 960 | |
| 961 // jvmti support | |
| 962 __ notify_method_entry(); | |
| 963 | |
| 964 // work registers | |
| 965 const Register method = rbx; | |
|
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966 const Register t = r11; |
| 0 | 967 |
| 968 // allocate space for parameters | |
| 969 __ get_method(method); | |
|
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970 __ movptr(t, Address(method, Method::const_offset())); |
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971 __ load_unsigned_short(t, Address(t, ConstMethod::size_of_parameters_offset())); |
| 1506 | 972 __ shll(t, Interpreter::logStackElementSize); |
| 0 | 973 |
| 304 | 974 __ subptr(rsp, t); |
| 975 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows | |
| 605 | 976 __ andptr(rsp, -16); // must be 16 byte boundary (see amd64 ABI) |
| 0 | 977 |
| 978 // get signature handler | |
| 979 { | |
| 980 Label L; | |
|
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981 __ movptr(t, Address(method, Method::signature_handler_offset())); |
| 304 | 982 __ testptr(t, t); |
| 0 | 983 __ jcc(Assembler::notZero, L); |
| 984 __ call_VM(noreg, | |
| 985 CAST_FROM_FN_PTR(address, | |
| 986 InterpreterRuntime::prepare_native_call), | |
| 987 method); | |
| 988 __ get_method(method); | |
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989 __ movptr(t, Address(method, Method::signature_handler_offset())); |
| 0 | 990 __ bind(L); |
| 991 } | |
| 992 | |
| 993 // call signature handler | |
| 994 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == r14, | |
| 995 "adjust this code"); | |
| 996 assert(InterpreterRuntime::SignatureHandlerGenerator::to() == rsp, | |
| 997 "adjust this code"); | |
| 998 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == rscratch1, | |
| 999 "adjust this code"); | |
| 1000 | |
| 1001 // The generated handlers do not touch RBX (the method oop). | |
| 1002 // However, large signatures cannot be cached and are generated | |
| 1003 // each time here. The slow-path generator can do a GC on return, | |
| 1004 // so we must reload it after the call. | |
| 1005 __ call(t); | |
| 1006 __ get_method(method); // slow path can do a GC, reload RBX | |
| 1007 | |
| 1008 | |
| 1009 // result handler is in rax | |
| 1010 // set result handler | |
| 304 | 1011 __ movptr(Address(rbp, |
| 1012 (frame::interpreter_frame_result_handler_offset) * wordSize), | |
| 1013 rax); | |
| 0 | 1014 |
| 1015 // pass mirror handle if static call | |
| 1016 { | |
| 1017 Label L; | |
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1018 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
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1019 __ movl(t, Address(method, Method::access_flags_offset())); |
| 0 | 1020 __ testl(t, JVM_ACC_STATIC); |
| 1021 __ jcc(Assembler::zero, L); | |
| 1022 // get mirror | |
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1023 __ movptr(t, Address(method, Method::const_offset())); |
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1024 __ movptr(t, Address(t, ConstMethod::constants_offset())); |
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1025 __ movptr(t, Address(t, ConstantPool::pool_holder_offset_in_bytes())); |
| 304 | 1026 __ movptr(t, Address(t, mirror_offset)); |
| 0 | 1027 // copy mirror into activation frame |
| 304 | 1028 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), |
| 0 | 1029 t); |
| 1030 // pass handle to mirror | |
| 304 | 1031 __ lea(c_rarg1, |
| 1032 Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); | |
| 0 | 1033 __ bind(L); |
| 1034 } | |
| 1035 | |
| 1036 // get native function entry point | |
| 1037 { | |
| 1038 Label L; | |
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1039 __ movptr(rax, Address(method, Method::native_function_offset())); |
| 0 | 1040 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
| 1041 __ movptr(rscratch2, unsatisfied.addr()); | |
| 304 | 1042 __ cmpptr(rax, rscratch2); |
| 0 | 1043 __ jcc(Assembler::notEqual, L); |
| 1044 __ call_VM(noreg, | |
| 1045 CAST_FROM_FN_PTR(address, | |
| 1046 InterpreterRuntime::prepare_native_call), | |
| 1047 method); | |
| 1048 __ get_method(method); | |
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1049 __ movptr(rax, Address(method, Method::native_function_offset())); |
| 0 | 1050 __ bind(L); |
| 1051 } | |
| 1052 | |
| 1053 // pass JNIEnv | |
| 304 | 1054 __ lea(c_rarg0, Address(r15_thread, JavaThread::jni_environment_offset())); |
| 0 | 1055 |
| 1056 // It is enough that the pc() points into the right code | |
| 1057 // segment. It does not have to be the correct return pc. | |
| 1058 __ set_last_Java_frame(rsp, rbp, (address) __ pc()); | |
| 1059 | |
| 1060 // change thread state | |
| 1061 #ifdef ASSERT | |
| 1062 { | |
| 1063 Label L; | |
| 1064 __ movl(t, Address(r15_thread, JavaThread::thread_state_offset())); | |
| 1065 __ cmpl(t, _thread_in_Java); | |
| 1066 __ jcc(Assembler::equal, L); | |
| 1067 __ stop("Wrong thread state in native stub"); | |
| 1068 __ bind(L); | |
| 1069 } | |
| 1070 #endif | |
| 1071 | |
| 1072 // Change state to native | |
| 1073 | |
| 1074 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
| 1075 _thread_in_native); | |
| 1076 | |
| 1077 // Call the native method. | |
| 1078 __ call(rax); | |
| 1079 // result potentially in rax or xmm0 | |
| 1080 | |
| 1081 // Depending on runtime options, either restore the MXCSR | |
| 1082 // register after returning from the JNI Call or verify that | |
| 1083 // it wasn't changed during -Xcheck:jni. | |
| 1084 if (RestoreMXCSROnJNICalls) { | |
| 304 | 1085 __ ldmxcsr(ExternalAddress(StubRoutines::x86::mxcsr_std())); |
| 0 | 1086 } |
| 1087 else if (CheckJNICalls) { | |
| 304 | 1088 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, StubRoutines::x86::verify_mxcsr_entry()))); |
| 0 | 1089 } |
| 1090 | |
| 1091 // NOTE: The order of these pushes is known to frame::interpreter_frame_result | |
| 1092 // in order to extract the result of a method call. If the order of these | |
| 1093 // pushes change or anything else is added to the stack then the code in | |
| 1094 // interpreter_frame_result must also change. | |
| 1095 | |
| 1096 __ push(dtos); | |
| 1097 __ push(ltos); | |
| 1098 | |
| 1099 // change thread state | |
| 1100 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
| 1101 _thread_in_native_trans); | |
| 1102 | |
| 1103 if (os::is_MP()) { | |
| 1104 if (UseMembar) { | |
| 1105 // Force this write out before the read below | |
| 1106 __ membar(Assembler::Membar_mask_bits( | |
| 1107 Assembler::LoadLoad | Assembler::LoadStore | | |
| 1108 Assembler::StoreLoad | Assembler::StoreStore)); | |
| 1109 } else { | |
| 1110 // Write serialization page so VM thread can do a pseudo remote membar. | |
| 1111 // We use the current thread pointer to calculate a thread specific | |
| 1112 // offset to write to within the page. This minimizes bus traffic | |
| 1113 // due to cache line collision. | |
| 1114 __ serialize_memory(r15_thread, rscratch2); | |
| 1115 } | |
| 1116 } | |
| 1117 | |
| 1118 // check for safepoint operation in progress and/or pending suspend requests | |
| 1119 { | |
| 1120 Label Continue; | |
| 1121 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
| 1122 SafepointSynchronize::_not_synchronized); | |
| 1123 | |
| 1124 Label L; | |
| 1125 __ jcc(Assembler::notEqual, L); | |
| 1126 __ cmpl(Address(r15_thread, JavaThread::suspend_flags_offset()), 0); | |
| 1127 __ jcc(Assembler::equal, Continue); | |
| 1128 __ bind(L); | |
| 1129 | |
| 1130 // Don't use call_VM as it will see a possible pending exception | |
| 1131 // and forward it and never return here preventing us from | |
| 1132 // clearing _last_native_pc down below. Also can't use | |
| 1133 // call_VM_leaf either as it will check to see if r13 & r14 are | |
| 1134 // preserved and correspond to the bcp/locals pointers. So we do a | |
| 1135 // runtime call by hand. | |
| 1136 // | |
| 304 | 1137 __ mov(c_rarg0, r15_thread); |
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1138 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
| 304 | 1139 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
| 1140 __ andptr(rsp, -16); // align stack as required by ABI | |
| 0 | 1141 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans))); |
| 304 | 1142 __ mov(rsp, r12); // restore sp |
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1143 __ reinit_heapbase(); |
| 0 | 1144 __ bind(Continue); |
| 1145 } | |
| 1146 | |
| 1147 // change thread state | |
| 1148 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
| 1149 | |
| 1150 // reset_last_Java_frame | |
| 1151 __ reset_last_Java_frame(true, true); | |
| 1152 | |
| 1153 // reset handle block | |
| 304 | 1154 __ movptr(t, Address(r15_thread, JavaThread::active_handles_offset())); |
| 1155 __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD); | |
| 0 | 1156 |
| 1157 // If result is an oop unbox and store it in frame where gc will see it | |
| 1158 // and result handler will pick it up | |
| 1159 | |
| 1160 { | |
| 1161 Label no_oop, store_result; | |
| 1162 __ lea(t, ExternalAddress(AbstractInterpreter::result_handler(T_OBJECT))); | |
| 304 | 1163 __ cmpptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
| 0 | 1164 __ jcc(Assembler::notEqual, no_oop); |
| 1165 // retrieve result | |
| 1166 __ pop(ltos); | |
| 304 | 1167 __ testptr(rax, rax); |
| 0 | 1168 __ jcc(Assembler::zero, store_result); |
| 304 | 1169 __ movptr(rax, Address(rax, 0)); |
| 0 | 1170 __ bind(store_result); |
| 304 | 1171 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize), rax); |
| 0 | 1172 // keep stack depth as expected by pushing oop which will eventually be discarde |
| 1173 __ push(ltos); | |
| 1174 __ bind(no_oop); | |
| 1175 } | |
| 1176 | |
| 1177 | |
| 1178 { | |
| 1179 Label no_reguard; | |
| 1180 __ cmpl(Address(r15_thread, JavaThread::stack_guard_state_offset()), | |
| 1181 JavaThread::stack_guard_yellow_disabled); | |
| 1182 __ jcc(Assembler::notEqual, no_reguard); | |
| 1183 | |
| 304 | 1184 __ pusha(); // XXX only save smashed registers |
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1185 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
| 304 | 1186 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
| 1187 __ andptr(rsp, -16); // align stack as required by ABI | |
| 0 | 1188 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
| 304 | 1189 __ mov(rsp, r12); // restore sp |
| 1190 __ popa(); // XXX only restore smashed registers | |
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1191 __ reinit_heapbase(); |
| 0 | 1192 |
| 1193 __ bind(no_reguard); | |
| 1194 } | |
| 1195 | |
| 1196 | |
| 1197 // The method register is junk from after the thread_in_native transition | |
| 1198 // until here. Also can't call_VM until the bcp has been | |
| 1199 // restored. Need bcp for throwing exception below so get it now. | |
| 1200 __ get_method(method); | |
| 1201 | |
| 1202 // restore r13 to have legal interpreter frame, i.e., bci == 0 <=> | |
| 1203 // r13 == code_base() | |
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1204 __ movptr(r13, Address(method, Method::const_offset())); // get ConstMethod* |
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1205 __ lea(r13, Address(r13, ConstMethod::codes_offset())); // get codebase |
| 0 | 1206 // handle exceptions (exception handling will handle unlocking!) |
| 1207 { | |
| 1208 Label L; | |
| 304 | 1209 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
| 0 | 1210 __ jcc(Assembler::zero, L); |
| 1211 // Note: At some point we may want to unify this with the code | |
| 1212 // used in call_VM_base(); i.e., we should use the | |
| 1213 // StubRoutines::forward_exception code. For now this doesn't work | |
| 1214 // here because the rsp is not correctly set at this point. | |
| 1215 __ MacroAssembler::call_VM(noreg, | |
| 1216 CAST_FROM_FN_PTR(address, | |
| 1217 InterpreterRuntime::throw_pending_exception)); | |
| 1218 __ should_not_reach_here(); | |
| 1219 __ bind(L); | |
| 1220 } | |
| 1221 | |
| 1222 // do unlocking if necessary | |
| 1223 { | |
| 1224 Label L; | |
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1225 __ movl(t, Address(method, Method::access_flags_offset())); |
| 0 | 1226 __ testl(t, JVM_ACC_SYNCHRONIZED); |
| 1227 __ jcc(Assembler::zero, L); | |
| 1228 // the code below should be shared with interpreter macro | |
| 1229 // assembler implementation | |
| 1230 { | |
| 1231 Label unlock; | |
| 1232 // BasicObjectLock will be first in list, since this is a | |
| 1233 // synchronized method. However, need to check that the object | |
| 1234 // has not been unlocked by an explicit monitorexit bytecode. | |
| 1235 const Address monitor(rbp, | |
| 1236 (intptr_t)(frame::interpreter_frame_initial_sp_offset * | |
| 1237 wordSize - sizeof(BasicObjectLock))); | |
| 1238 | |
| 1239 // monitor expect in c_rarg1 for slow unlock path | |
| 304 | 1240 __ lea(c_rarg1, monitor); // address of first monitor |
| 0 | 1241 |
| 304 | 1242 __ movptr(t, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
| 1243 __ testptr(t, t); | |
| 0 | 1244 __ jcc(Assembler::notZero, unlock); |
| 1245 | |
| 1246 // Entry already unlocked, need to throw exception | |
| 1247 __ MacroAssembler::call_VM(noreg, | |
| 1248 CAST_FROM_FN_PTR(address, | |
| 1249 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 1250 __ should_not_reach_here(); | |
| 1251 | |
| 1252 __ bind(unlock); | |
| 1253 __ unlock_object(c_rarg1); | |
| 1254 } | |
| 1255 __ bind(L); | |
| 1256 } | |
| 1257 | |
| 1258 // jvmti support | |
| 1259 // Note: This must happen _after_ handling/throwing any exceptions since | |
| 1260 // the exception handler code notifies the runtime of method exits | |
| 1261 // too. If this happens before, method entry/exit notifications are | |
| 1262 // not properly paired (was bug - gri 11/22/99). | |
| 1263 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
| 1264 | |
| 1265 // restore potential result in edx:eax, call result handler to | |
| 1266 // restore potential result in ST0 & handle result | |
| 1267 | |
| 1268 __ pop(ltos); | |
| 1269 __ pop(dtos); | |
| 1270 | |
| 304 | 1271 __ movptr(t, Address(rbp, |
| 1272 (frame::interpreter_frame_result_handler_offset) * wordSize)); | |
| 0 | 1273 __ call(t); |
| 1274 | |
| 1275 // remove activation | |
| 304 | 1276 __ movptr(t, Address(rbp, |
| 1277 frame::interpreter_frame_sender_sp_offset * | |
| 1278 wordSize)); // get sender sp | |
| 0 | 1279 __ leave(); // remove frame anchor |
| 304 | 1280 __ pop(rdi); // get return address |
| 1281 __ mov(rsp, t); // set sp to sender sp | |
| 0 | 1282 __ jmp(rdi); |
| 1283 | |
| 1284 if (inc_counter) { | |
| 1285 // Handle overflow of counter and compile method | |
| 1286 __ bind(invocation_counter_overflow); | |
| 1287 generate_counter_overflow(&continue_after_compile); | |
| 1288 } | |
| 1289 | |
| 1290 return entry_point; | |
| 1291 } | |
| 1292 | |
| 1293 // | |
| 1294 // Generic interpreted method entry to (asm) interpreter | |
| 1295 // | |
| 1296 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
| 1297 // determine code generation flags | |
| 1298 bool inc_counter = UseCompiler || CountCompiledCalls; | |
| 1299 | |
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1300 // ebx: Method* |
| 0 | 1301 // r13: sender sp |
| 1302 address entry_point = __ pc(); | |
| 1303 | |
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1304 const Address constMethod(rbx, Method::const_offset()); |
| 0 | 1305 const Address invocation_counter(rbx, |
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1306 Method::invocation_counter_offset() + |
| 0 | 1307 InvocationCounter::counter_offset()); |
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1308 const Address access_flags(rbx, Method::access_flags_offset()); |
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1309 const Address size_of_parameters(rdx, |
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1310 ConstMethod::size_of_parameters_offset()); |
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1311 const Address size_of_locals(rdx, ConstMethod::size_of_locals_offset()); |
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1312 |
| 0 | 1313 |
| 1314 // get parameter size (always needed) | |
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1315 __ movptr(rdx, constMethod); |
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1316 __ load_unsigned_short(rcx, size_of_parameters); |
| 0 | 1317 |
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1318 // rbx: Method* |
| 0 | 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 // | |
|
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1482 // rbx: Method* |
| 0 | 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 ] | |
|
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1507 // [ Method* ] |
| 0 | 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; | |
|
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1526 case Interpreter::native : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(false); break; |
|
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1527 case Interpreter::native_synchronized : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(true); break; |
|
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1528 case Interpreter::empty : entry_point = ((InterpreterGenerator*)this)->generate_empty_entry(); break; |
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1529 case Interpreter::accessor : entry_point = ((InterpreterGenerator*)this)->generate_accessor_entry(); break; |
|
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1530 case Interpreter::abstract : entry_point = ((InterpreterGenerator*)this)->generate_abstract_entry(); break; |
|
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1531 |
|
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1532 case Interpreter::java_lang_math_sin : // fall thru |
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1533 case Interpreter::java_lang_math_cos : // fall thru |
|
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1534 case Interpreter::java_lang_math_tan : // fall thru |
|
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1535 case Interpreter::java_lang_math_abs : // fall thru |
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1536 case Interpreter::java_lang_math_log : // fall thru |
|
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1537 case Interpreter::java_lang_math_log10 : // fall thru |
|
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1538 case Interpreter::java_lang_math_sqrt : // fall thru |
|
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1539 case Interpreter::java_lang_math_pow : // fall thru |
|
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1540 case Interpreter::java_lang_math_exp : entry_point = ((InterpreterGenerator*)this)->generate_math_entry(kind); break; |
|
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1541 case Interpreter::java_lang_ref_reference_get |
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1542 : entry_point = ((InterpreterGenerator*)this)->generate_Reference_get_entry(); break; |
|
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1543 default: |
|
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1544 fatal(err_msg("unexpected method kind: %d", kind)); |
|
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1545 break; |
| 0 | 1546 } |
| 1547 | |
| 1548 if (entry_point) { | |
| 1549 return entry_point; | |
| 1550 } | |
| 1551 | |
| 1552 return ((InterpreterGenerator*) this)-> | |
| 1553 generate_normal_entry(synchronized); | |
| 1554 } | |
| 1555 | |
|
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1556 // These should never be compiled since the interpreter will prefer |
|
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1557 // the compiled version to the intrinsic version. |
|
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1558 bool AbstractInterpreter::can_be_compiled(methodHandle m) { |
|
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1559 switch (method_kind(m)) { |
|
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1560 case Interpreter::java_lang_math_sin : // fall thru |
|
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1561 case Interpreter::java_lang_math_cos : // fall thru |
|
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1562 case Interpreter::java_lang_math_tan : // fall thru |
|
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1563 case Interpreter::java_lang_math_abs : // fall thru |
|
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1564 case Interpreter::java_lang_math_log : // fall thru |
|
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1565 case Interpreter::java_lang_math_log10 : // fall thru |
|
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1566 case Interpreter::java_lang_math_sqrt : // fall thru |
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1567 case Interpreter::java_lang_math_pow : // fall thru |
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1568 case Interpreter::java_lang_math_exp : |
|
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1569 return false; |
|
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|
1570 default: |
|
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|
1571 return true; |
|
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|
1572 } |
|
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|
1573 } |
|
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1574 |
| 0 | 1575 // How much stack a method activation needs in words. |
|
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1576 int AbstractInterpreter::size_top_interpreter_activation(Method* method) { |
| 0 | 1577 const int entry_size = frame::interpreter_frame_monitor_size(); |
| 1578 | |
| 1579 // total overhead size: entry_size + (saved rbp thru expr stack | |
| 1580 // bottom). be sure to change this if you add/subtract anything | |
| 1581 // to/from the overhead area | |
| 1582 const int overhead_size = | |
| 1583 -(frame::interpreter_frame_initial_sp_offset) + entry_size; | |
| 1584 | |
| 1585 const int stub_code = frame::entry_frame_after_call_words; | |
|
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1586 const int extra_stack = Method::extra_stack_entries(); |
| 710 | 1587 const int method_stack = (method->max_locals() + method->max_stack() + extra_stack) * |
| 1506 | 1588 Interpreter::stackElementWords; |
| 0 | 1589 return (overhead_size + method_stack + stub_code); |
| 1590 } | |
| 1591 | |
|
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1592 int AbstractInterpreter::layout_activation(Method* method, |
| 0 | 1593 int tempcount, |
| 1594 int popframe_extra_args, | |
| 1595 int moncount, | |
|
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1596 int caller_actual_parameters, |
| 0 | 1597 int callee_param_count, |
| 1598 int callee_locals, | |
| 1599 frame* caller, | |
| 1600 frame* interpreter_frame, | |
| 1601 bool is_top_frame) { | |
| 1602 // Note: This calculation must exactly parallel the frame setup | |
| 1603 // in AbstractInterpreterGenerator::generate_method_entry. | |
| 1604 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
| 1605 // The frame interpreter_frame, if not NULL, is guaranteed to be the | |
| 1606 // right size, as determined by a previous call to this method. | |
| 1607 // It is also guaranteed to be walkable even though it is in a skeletal state | |
| 1608 | |
| 1609 // fixed size of an interpreter frame: | |
| 1506 | 1610 int max_locals = method->max_locals() * Interpreter::stackElementWords; |
| 0 | 1611 int extra_locals = (method->max_locals() - method->size_of_parameters()) * |
| 1506 | 1612 Interpreter::stackElementWords; |
| 0 | 1613 |
| 1614 int overhead = frame::sender_sp_offset - | |
| 1615 frame::interpreter_frame_initial_sp_offset; | |
| 1616 // Our locals were accounted for by the caller (or last_frame_adjust | |
| 1617 // on the transistion) Since the callee parameters already account | |
| 1618 // for the callee's params we only need to account for the extra | |
| 1619 // locals. | |
| 1620 int size = overhead + | |
| 1506 | 1621 (callee_locals - callee_param_count)*Interpreter::stackElementWords + |
| 0 | 1622 moncount * frame::interpreter_frame_monitor_size() + |
| 1506 | 1623 tempcount* Interpreter::stackElementWords + popframe_extra_args; |
| 0 | 1624 if (interpreter_frame != NULL) { |
| 1625 #ifdef ASSERT | |
|
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1626 if (!EnableInvokeDynamic) |
|
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1627 // @@@ FIXME: Should we correct interpreter_frame_sender_sp in the calling sequences? |
|
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1628 // Probably, since deoptimization doesn't work yet. |
|
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1629 assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable"); |
| 0 | 1630 assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)"); |
| 1631 #endif | |
| 1632 | |
| 1633 interpreter_frame->interpreter_frame_set_method(method); | |
| 1634 // NOTE the difference in using sender_sp and | |
| 1635 // interpreter_frame_sender_sp interpreter_frame_sender_sp is | |
| 1636 // the original sp of the caller (the unextended_sp) and | |
| 1637 // sender_sp is fp+16 XXX | |
| 1638 intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; | |
| 1639 | |
|
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|
1640 #ifdef ASSERT |
|
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|
1641 if (caller->is_interpreted_frame()) { |
|
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1642 assert(locals < caller->fp() + frame::interpreter_frame_initial_sp_offset, "bad placement"); |
|
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1643 } |
|
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|
1644 #endif |
|
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1645 |
| 0 | 1646 interpreter_frame->interpreter_frame_set_locals(locals); |
| 1647 BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); | |
| 1648 BasicObjectLock* monbot = montop - moncount; | |
| 1649 interpreter_frame->interpreter_frame_set_monitor_end(monbot); | |
| 1650 | |
| 1651 // Set last_sp | |
| 1652 intptr_t* esp = (intptr_t*) monbot - | |
| 1506 | 1653 tempcount*Interpreter::stackElementWords - |
| 0 | 1654 popframe_extra_args; |
| 1655 interpreter_frame->interpreter_frame_set_last_sp(esp); | |
| 1656 | |
| 1657 // All frames but the initial (oldest) interpreter frame we fill in have | |
| 1658 // a value for sender_sp that allows walking the stack but isn't | |
| 1659 // truly correct. Correct the value here. | |
| 1660 if (extra_locals != 0 && | |
| 1661 interpreter_frame->sender_sp() == | |
| 1662 interpreter_frame->interpreter_frame_sender_sp()) { | |
| 1663 interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + | |
| 1664 extra_locals); | |
| 1665 } | |
| 1666 *interpreter_frame->interpreter_frame_cache_addr() = | |
| 1667 method->constants()->cache(); | |
| 1668 } | |
| 1669 return size; | |
| 1670 } | |
| 1671 | |
| 1672 //----------------------------------------------------------------------------- | |
| 1673 // Exceptions | |
| 1674 | |
| 1675 void TemplateInterpreterGenerator::generate_throw_exception() { | |
| 1676 // Entry point in previous activation (i.e., if the caller was | |
| 1677 // interpreted) | |
| 1678 Interpreter::_rethrow_exception_entry = __ pc(); | |
| 1679 // Restore sp to interpreter_frame_last_sp even though we are going | |
| 1680 // to empty the expression stack for the exception processing. | |
| 304 | 1681 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
| 0 | 1682 // rax: exception |
| 1683 // rdx: return address/pc that threw exception | |
| 1684 __ restore_bcp(); // r13 points to call/send | |
| 1685 __ restore_locals(); | |
|
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1686 __ reinit_heapbase(); // restore r12 as heapbase. |
| 0 | 1687 // Entry point for exceptions thrown within interpreter code |
| 1688 Interpreter::_throw_exception_entry = __ pc(); | |
| 1689 // expression stack is undefined here | |
| 1690 // rax: exception | |
| 1691 // r13: exception bcp | |
| 1692 __ verify_oop(rax); | |
| 304 | 1693 __ mov(c_rarg1, rax); |
| 0 | 1694 |
| 1695 // expression stack must be empty before entering the VM in case of | |
| 1696 // an exception | |
| 1697 __ empty_expression_stack(); | |
| 1698 // find exception handler address and preserve exception oop | |
| 1699 __ call_VM(rdx, | |
| 1700 CAST_FROM_FN_PTR(address, | |
| 1701 InterpreterRuntime::exception_handler_for_exception), | |
| 1702 c_rarg1); | |
| 1703 // rax: exception handler entry point | |
| 1704 // rdx: preserved exception oop | |
| 1705 // r13: bcp for exception handler | |
| 1706 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
| 1707 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
| 1708 | |
| 1709 // If the exception is not handled in the current frame the frame is | |
| 1710 // removed and the exception is rethrown (i.e. exception | |
| 1711 // continuation is _rethrow_exception). | |
| 1712 // | |
| 1713 // Note: At this point the bci is still the bxi for the instruction | |
| 1714 // which caused the exception and the expression stack is | |
| 1715 // empty. Thus, for any VM calls at this point, GC will find a legal | |
| 1716 // oop map (with empty expression stack). | |
| 1717 | |
| 1718 // In current activation | |
| 1719 // tos: exception | |
| 1720 // esi: exception bcp | |
| 1721 | |
| 1722 // | |
| 1723 // JVMTI PopFrame support | |
| 1724 // | |
| 1725 | |
| 1726 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
| 1727 __ empty_expression_stack(); | |
| 1728 // Set the popframe_processing bit in pending_popframe_condition | |
| 1729 // indicating that we are currently handling popframe, so that | |
| 1730 // call_VMs that may happen later do not trigger new popframe | |
| 1731 // handling cycles. | |
| 1732 __ movl(rdx, Address(r15_thread, JavaThread::popframe_condition_offset())); | |
| 1733 __ orl(rdx, JavaThread::popframe_processing_bit); | |
| 1734 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), rdx); | |
| 1735 | |
| 1736 { | |
| 1737 // Check to see whether we are returning to a deoptimized frame. | |
| 1738 // (The PopFrame call ensures that the caller of the popped frame is | |
| 1739 // either interpreted or compiled and deoptimizes it if compiled.) | |
| 1740 // In this case, we can't call dispatch_next() after the frame is | |
| 1741 // popped, but instead must save the incoming arguments and restore | |
| 1742 // them after deoptimization has occurred. | |
| 1743 // | |
| 1744 // Note that we don't compare the return PC against the | |
| 1745 // deoptimization blob's unpack entry because of the presence of | |
| 1746 // adapter frames in C2. | |
| 1747 Label caller_not_deoptimized; | |
| 304 | 1748 __ movptr(c_rarg1, Address(rbp, frame::return_addr_offset * wordSize)); |
| 0 | 1749 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
| 1750 InterpreterRuntime::interpreter_contains), c_rarg1); | |
| 1751 __ testl(rax, rax); | |
| 1752 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
| 1753 | |
| 1754 // Compute size of arguments for saving when returning to | |
| 1755 // deoptimized caller | |
| 1756 __ get_method(rax); | |
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1757 __ movptr(rax, Address(rax, Method::const_offset())); |
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1758 __ load_unsigned_short(rax, Address(rax, in_bytes(ConstMethod:: |
| 0 | 1759 size_of_parameters_offset()))); |
| 1506 | 1760 __ shll(rax, Interpreter::logStackElementSize); |
| 0 | 1761 __ restore_locals(); // XXX do we need this? |
| 304 | 1762 __ subptr(r14, rax); |
| 1763 __ addptr(r14, wordSize); | |
| 0 | 1764 // Save these arguments |
| 1765 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, | |
| 1766 Deoptimization:: | |
| 1767 popframe_preserve_args), | |
| 1768 r15_thread, rax, r14); | |
| 1769 | |
| 1770 __ remove_activation(vtos, rdx, | |
| 1771 /* throw_monitor_exception */ false, | |
| 1772 /* install_monitor_exception */ false, | |
| 1773 /* notify_jvmdi */ false); | |
| 1774 | |
| 1775 // Inform deoptimization that it is responsible for restoring | |
| 1776 // these arguments | |
| 1777 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
| 1778 JavaThread::popframe_force_deopt_reexecution_bit); | |
| 1779 | |
| 1780 // Continue in deoptimization handler | |
| 1781 __ jmp(rdx); | |
| 1782 | |
| 1783 __ bind(caller_not_deoptimized); | |
| 1784 } | |
| 1785 | |
| 1786 __ remove_activation(vtos, rdx, /* rdx result (retaddr) is not used */ | |
| 1787 /* throw_monitor_exception */ false, | |
| 1788 /* install_monitor_exception */ false, | |
| 1789 /* notify_jvmdi */ false); | |
| 1790 | |
| 1791 // Finish with popframe handling | |
| 1792 // A previous I2C followed by a deoptimization might have moved the | |
| 1793 // outgoing arguments further up the stack. PopFrame expects the | |
| 1794 // mutations to those outgoing arguments to be preserved and other | |
| 1795 // constraints basically require this frame to look exactly as | |
| 1796 // though it had previously invoked an interpreted activation with | |
| 1797 // no space between the top of the expression stack (current | |
| 1798 // last_sp) and the top of stack. Rather than force deopt to | |
| 1799 // maintain this kind of invariant all the time we call a small | |
| 1800 // fixup routine to move the mutated arguments onto the top of our | |
| 1801 // expression stack if necessary. | |
| 304 | 1802 __ mov(c_rarg1, rsp); |
| 1803 __ movptr(c_rarg2, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
| 0 | 1804 // PC must point into interpreter here |
| 1805 __ set_last_Java_frame(noreg, rbp, __ pc()); | |
| 1806 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), r15_thread, c_rarg1, c_rarg2); | |
| 1807 __ reset_last_Java_frame(true, true); | |
| 1808 // Restore the last_sp and null it out | |
| 304 | 1809 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
| 1810 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); | |
| 0 | 1811 |
| 1812 __ restore_bcp(); // XXX do we need this? | |
| 1813 __ restore_locals(); // XXX do we need this? | |
| 1814 // The method data pointer was incremented already during | |
| 1815 // call profiling. We have to restore the mdp for the current bcp. | |
| 1816 if (ProfileInterpreter) { | |
| 1817 __ set_method_data_pointer_for_bcp(); | |
| 1818 } | |
| 1819 | |
| 1820 // Clear the popframe condition flag | |
| 1821 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
| 1822 JavaThread::popframe_inactive); | |
| 1823 | |
| 1824 __ dispatch_next(vtos); | |
| 1825 // end of PopFrame support | |
| 1826 | |
| 1827 Interpreter::_remove_activation_entry = __ pc(); | |
| 1828 | |
| 1829 // preserve exception over this code sequence | |
| 1830 __ pop_ptr(rax); | |
| 304 | 1831 __ movptr(Address(r15_thread, JavaThread::vm_result_offset()), rax); |
| 0 | 1832 // remove the activation (without doing throws on illegalMonitorExceptions) |
| 1833 __ remove_activation(vtos, rdx, false, true, false); | |
| 1834 // restore exception | |
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1835 __ get_vm_result(rax, r15_thread); |
| 0 | 1836 |
| 1837 // In between activations - previous activation type unknown yet | |
| 1838 // compute continuation point - the continuation point expects the | |
| 1839 // following registers set up: | |
| 1840 // | |
| 1841 // rax: exception | |
| 1842 // rdx: return address/pc that threw exception | |
| 1843 // rsp: expression stack of caller | |
| 1844 // rbp: ebp of caller | |
| 304 | 1845 __ push(rax); // save exception |
| 1846 __ push(rdx); // save return address | |
| 0 | 1847 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
| 1848 SharedRuntime::exception_handler_for_return_address), | |
| 1295 | 1849 r15_thread, rdx); |
| 304 | 1850 __ mov(rbx, rax); // save exception handler |
| 1851 __ pop(rdx); // restore return address | |
| 1852 __ pop(rax); // restore exception | |
| 0 | 1853 // Note that an "issuing PC" is actually the next PC after the call |
| 1854 __ jmp(rbx); // jump to exception | |
| 1855 // handler of caller | |
| 1856 } | |
| 1857 | |
| 1858 | |
| 1859 // | |
| 1860 // JVMTI ForceEarlyReturn support | |
| 1861 // | |
| 1862 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
| 1863 address entry = __ pc(); | |
| 1864 | |
| 1865 __ restore_bcp(); | |
| 1866 __ restore_locals(); | |
| 1867 __ empty_expression_stack(); | |
| 1868 __ load_earlyret_value(state); | |
| 1869 | |
| 304 | 1870 __ movptr(rdx, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
| 0 | 1871 Address cond_addr(rdx, JvmtiThreadState::earlyret_state_offset()); |
| 1872 | |
| 1873 // Clear the earlyret state | |
| 1874 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
| 1875 | |
| 1876 __ remove_activation(state, rsi, | |
| 1877 false, /* throw_monitor_exception */ | |
| 1878 false, /* install_monitor_exception */ | |
| 1879 true); /* notify_jvmdi */ | |
| 1880 __ jmp(rsi); | |
| 1881 | |
| 1882 return entry; | |
| 1883 } // end of ForceEarlyReturn support | |
| 1884 | |
| 1885 | |
| 1886 //----------------------------------------------------------------------------- | |
| 1887 // Helper for vtos entry point generation | |
| 1888 | |
| 1889 void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t, | |
| 1890 address& bep, | |
| 1891 address& cep, | |
| 1892 address& sep, | |
| 1893 address& aep, | |
| 1894 address& iep, | |
| 1895 address& lep, | |
| 1896 address& fep, | |
| 1897 address& dep, | |
| 1898 address& vep) { | |
| 1899 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
| 1900 Label L; | |
| 1901 aep = __ pc(); __ push_ptr(); __ jmp(L); | |
| 1902 fep = __ pc(); __ push_f(); __ jmp(L); | |
| 1903 dep = __ pc(); __ push_d(); __ jmp(L); | |
| 1904 lep = __ pc(); __ push_l(); __ jmp(L); | |
| 1905 bep = cep = sep = | |
| 1906 iep = __ pc(); __ push_i(); | |
| 1907 vep = __ pc(); | |
| 1908 __ bind(L); | |
| 1909 generate_and_dispatch(t); | |
| 1910 } | |
| 1911 | |
| 1912 | |
| 1913 //----------------------------------------------------------------------------- | |
| 1914 // Generation of individual instructions | |
| 1915 | |
| 1916 // helpers for generate_and_dispatch | |
| 1917 | |
| 1918 | |
| 1919 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
| 1920 : TemplateInterpreterGenerator(code) { | |
| 1921 generate_all(); // down here so it can be "virtual" | |
| 1922 } | |
| 1923 | |
| 1924 //----------------------------------------------------------------------------- | |
| 1925 | |
| 1926 // Non-product code | |
| 1927 #ifndef PRODUCT | |
| 1928 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
| 1929 address entry = __ pc(); | |
| 1930 | |
| 1931 __ push(state); | |
| 304 | 1932 __ push(c_rarg0); |
| 1933 __ push(c_rarg1); | |
| 1934 __ push(c_rarg2); | |
| 1935 __ push(c_rarg3); | |
| 1936 __ mov(c_rarg2, rax); // Pass itos | |
| 0 | 1937 #ifdef _WIN64 |
| 1938 __ movflt(xmm3, xmm0); // Pass ftos | |
| 1939 #endif | |
| 1940 __ call_VM(noreg, | |
| 1941 CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), | |
| 1942 c_rarg1, c_rarg2, c_rarg3); | |
| 304 | 1943 __ pop(c_rarg3); |
| 1944 __ pop(c_rarg2); | |
| 1945 __ pop(c_rarg1); | |
| 1946 __ pop(c_rarg0); | |
| 0 | 1947 __ pop(state); |
| 1948 __ ret(0); // return from result handler | |
| 1949 | |
| 1950 return entry; | |
| 1951 } | |
| 1952 | |
| 1953 void TemplateInterpreterGenerator::count_bytecode() { | |
| 1954 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); | |
| 1955 } | |
| 1956 | |
| 1957 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
| 1958 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); | |
| 1959 } | |
| 1960 | |
| 1961 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
| 1962 __ mov32(rbx, ExternalAddress((address) &BytecodePairHistogram::_index)); | |
| 1963 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
| 1964 __ orl(rbx, | |
| 1965 ((int) t->bytecode()) << | |
| 1966 BytecodePairHistogram::log2_number_of_codes); | |
| 1967 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
| 1968 __ lea(rscratch1, ExternalAddress((address) BytecodePairHistogram::_counters)); | |
| 1969 __ incrementl(Address(rscratch1, rbx, Address::times_4)); | |
| 1970 } | |
| 1971 | |
| 1972 | |
| 1973 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
| 1974 // Call a little run-time stub to avoid blow-up for each bytecode. | |
| 1975 // The run-time runtime saves the right registers, depending on | |
| 1976 // the tosca in-state for the given template. | |
| 1977 | |
| 1978 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
| 1979 "entry must have been generated"); | |
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1980 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
| 304 | 1981 __ andptr(rsp, -16); // align stack as required by ABI |
| 0 | 1982 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); |
| 304 | 1983 __ mov(rsp, r12); // restore sp |
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1984 __ reinit_heapbase(); |
| 0 | 1985 } |
| 1986 | |
| 1987 | |
| 1988 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
| 1989 Label L; | |
| 1990 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
| 1991 StopInterpreterAt); | |
| 1992 __ jcc(Assembler::notEqual, L); | |
| 1993 __ int3(); | |
| 1994 __ bind(L); | |
| 1995 } | |
| 1996 #endif // !PRODUCT | |
| 304 | 1997 #endif // ! CC_INTERP |