Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateInterpreter_x86_64.cpp @ 10973:ef57c43512d6
8014431: cleanup warnings indicated by the -Wunused-value compiler option on linux
Reviewed-by: dholmes, coleenp
Contributed-by: jeremymanson@google.com, calvin.cheung@oracle.com
| author | ccheung |
|---|---|
| date | Thu, 13 Jun 2013 22:02:40 -0700 |
| parents | 603ca7e51354 |
| children | 836a62f43af9 b800986664f4 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2003, 2013, 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" | |
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47 #include "utilities/macros.hpp" |
| 0 | 48 |
| 49 #define __ _masm-> | |
| 50 | |
| 304 | 51 #ifndef CC_INTERP |
| 52 | |
| 0 | 53 const int method_offset = frame::interpreter_frame_method_offset * wordSize; |
| 54 const int bci_offset = frame::interpreter_frame_bcx_offset * wordSize; | |
| 55 const int locals_offset = frame::interpreter_frame_locals_offset * wordSize; | |
| 56 | |
| 57 //----------------------------------------------------------------------------- | |
| 58 | |
| 59 address TemplateInterpreterGenerator::generate_StackOverflowError_handler() { | |
| 60 address entry = __ pc(); | |
| 61 | |
| 62 #ifdef ASSERT | |
| 63 { | |
| 64 Label L; | |
| 304 | 65 __ lea(rax, Address(rbp, |
| 66 frame::interpreter_frame_monitor_block_top_offset * | |
| 67 wordSize)); | |
| 68 __ cmpptr(rax, rsp); // rax = maximal rsp for current rbp (stack | |
| 69 // grows negative) | |
| 0 | 70 __ jcc(Assembler::aboveEqual, L); // check if frame is complete |
| 71 __ stop ("interpreter frame not set up"); | |
| 72 __ bind(L); | |
| 73 } | |
| 74 #endif // ASSERT | |
| 75 // Restore bcp under the assumption that the current frame is still | |
| 76 // interpreted | |
| 77 __ restore_bcp(); | |
| 78 | |
| 79 // expression stack must be empty before entering the VM if an | |
| 80 // exception happened | |
| 81 __ empty_expression_stack(); | |
| 82 // throw exception | |
| 83 __ call_VM(noreg, | |
| 84 CAST_FROM_FN_PTR(address, | |
| 85 InterpreterRuntime::throw_StackOverflowError)); | |
| 86 return entry; | |
| 87 } | |
| 88 | |
| 89 address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler( | |
| 90 const char* name) { | |
| 91 address entry = __ pc(); | |
| 92 // expression stack must be empty before entering the VM if an | |
| 93 // exception happened | |
| 94 __ empty_expression_stack(); | |
| 95 // setup parameters | |
| 96 // ??? convention: expect aberrant index in register ebx | |
| 97 __ lea(c_rarg1, ExternalAddress((address)name)); | |
| 98 __ call_VM(noreg, | |
| 99 CAST_FROM_FN_PTR(address, | |
| 100 InterpreterRuntime:: | |
| 101 throw_ArrayIndexOutOfBoundsException), | |
| 102 c_rarg1, rbx); | |
| 103 return entry; | |
| 104 } | |
| 105 | |
| 106 address TemplateInterpreterGenerator::generate_ClassCastException_handler() { | |
| 107 address entry = __ pc(); | |
| 108 | |
| 109 // object is at TOS | |
| 304 | 110 __ pop(c_rarg1); |
| 0 | 111 |
| 112 // expression stack must be empty before entering the VM if an | |
| 113 // exception happened | |
| 114 __ empty_expression_stack(); | |
| 115 | |
| 116 __ call_VM(noreg, | |
| 117 CAST_FROM_FN_PTR(address, | |
| 118 InterpreterRuntime:: | |
| 119 throw_ClassCastException), | |
| 120 c_rarg1); | |
| 121 return entry; | |
| 122 } | |
| 123 | |
| 124 address TemplateInterpreterGenerator::generate_exception_handler_common( | |
| 125 const char* name, const char* message, bool pass_oop) { | |
| 126 assert(!pass_oop || message == NULL, "either oop or message but not both"); | |
| 127 address entry = __ pc(); | |
| 128 if (pass_oop) { | |
| 129 // object is at TOS | |
| 304 | 130 __ pop(c_rarg2); |
| 0 | 131 } |
| 132 // expression stack must be empty before entering the VM if an | |
| 133 // exception happened | |
| 134 __ empty_expression_stack(); | |
| 135 // setup parameters | |
| 136 __ lea(c_rarg1, ExternalAddress((address)name)); | |
| 137 if (pass_oop) { | |
| 138 __ call_VM(rax, CAST_FROM_FN_PTR(address, | |
| 139 InterpreterRuntime:: | |
| 140 create_klass_exception), | |
| 141 c_rarg1, c_rarg2); | |
| 142 } else { | |
| 143 // kind of lame ExternalAddress can't take NULL because | |
| 144 // external_word_Relocation will assert. | |
| 145 if (message != NULL) { | |
| 146 __ lea(c_rarg2, ExternalAddress((address)message)); | |
| 147 } else { | |
| 148 __ movptr(c_rarg2, NULL_WORD); | |
| 149 } | |
| 150 __ call_VM(rax, | |
| 151 CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), | |
| 152 c_rarg1, c_rarg2); | |
| 153 } | |
| 154 // throw exception | |
| 155 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
| 156 return entry; | |
| 157 } | |
| 158 | |
| 159 | |
| 160 address TemplateInterpreterGenerator::generate_continuation_for(TosState state) { | |
| 161 address entry = __ pc(); | |
| 162 // NULL last_sp until next java call | |
| 304 | 163 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
| 0 | 164 __ dispatch_next(state); |
| 165 return entry; | |
| 166 } | |
| 167 | |
| 168 | |
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169 address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step) { |
| 0 | 170 address entry = __ pc(); |
| 171 | |
| 172 // Restore stack bottom in case i2c adjusted stack | |
| 304 | 173 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
| 0 | 174 // and NULL it as marker that esp is now tos until next java call |
| 304 | 175 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
| 0 | 176 |
| 177 __ restore_bcp(); | |
| 178 __ restore_locals(); | |
| 304 | 179 |
| 1108 | 180 Label L_got_cache, L_giant_index; |
| 181 if (EnableInvokeDynamic) { | |
| 182 __ cmpb(Address(r13, 0), Bytecodes::_invokedynamic); | |
| 183 __ jcc(Assembler::equal, L_giant_index); | |
| 184 } | |
| 1565 | 185 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u2)); |
| 1108 | 186 __ bind(L_got_cache); |
| 0 | 187 __ movl(rbx, Address(rbx, rcx, |
| 1108 | 188 Address::times_ptr, |
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189 in_bytes(ConstantPoolCache::base_offset()) + |
| 0 | 190 3 * wordSize)); |
| 191 __ andl(rbx, 0xFF); | |
| 304 | 192 __ lea(rsp, Address(rsp, rbx, Address::times_8)); |
| 0 | 193 __ dispatch_next(state, step); |
| 1108 | 194 |
| 195 // out of the main line of code... | |
| 196 if (EnableInvokeDynamic) { | |
| 197 __ bind(L_giant_index); | |
| 1565 | 198 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u4)); |
| 1108 | 199 __ jmp(L_got_cache); |
| 200 } | |
| 201 | |
| 0 | 202 return entry; |
| 203 } | |
| 204 | |
| 205 | |
| 206 address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, | |
| 207 int step) { | |
| 208 address entry = __ pc(); | |
| 209 // NULL last_sp until next java call | |
| 304 | 210 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
| 0 | 211 __ restore_bcp(); |
| 212 __ restore_locals(); | |
| 213 // handle exceptions | |
| 214 { | |
| 215 Label L; | |
| 304 | 216 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
| 0 | 217 __ jcc(Assembler::zero, L); |
| 218 __ call_VM(noreg, | |
| 219 CAST_FROM_FN_PTR(address, | |
| 220 InterpreterRuntime::throw_pending_exception)); | |
| 221 __ should_not_reach_here(); | |
| 222 __ bind(L); | |
| 223 } | |
| 224 __ dispatch_next(state, step); | |
| 225 return entry; | |
| 226 } | |
| 227 | |
| 228 int AbstractInterpreter::BasicType_as_index(BasicType type) { | |
| 229 int i = 0; | |
| 230 switch (type) { | |
| 231 case T_BOOLEAN: i = 0; break; | |
| 232 case T_CHAR : i = 1; break; | |
| 233 case T_BYTE : i = 2; break; | |
| 234 case T_SHORT : i = 3; break; | |
| 235 case T_INT : i = 4; break; | |
| 236 case T_LONG : i = 5; break; | |
| 237 case T_VOID : i = 6; break; | |
| 238 case T_FLOAT : i = 7; break; | |
| 239 case T_DOUBLE : i = 8; break; | |
| 240 case T_OBJECT : i = 9; break; | |
| 241 case T_ARRAY : i = 9; break; | |
| 242 default : ShouldNotReachHere(); | |
| 243 } | |
| 244 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, | |
| 245 "index out of bounds"); | |
| 246 return i; | |
| 247 } | |
| 248 | |
| 249 | |
| 250 address TemplateInterpreterGenerator::generate_result_handler_for( | |
| 251 BasicType type) { | |
| 252 address entry = __ pc(); | |
| 253 switch (type) { | |
| 254 case T_BOOLEAN: __ c2bool(rax); break; | |
| 255 case T_CHAR : __ movzwl(rax, rax); break; | |
| 256 case T_BYTE : __ sign_extend_byte(rax); break; | |
| 257 case T_SHORT : __ sign_extend_short(rax); break; | |
| 258 case T_INT : /* nothing to do */ break; | |
| 259 case T_LONG : /* nothing to do */ break; | |
| 260 case T_VOID : /* nothing to do */ break; | |
| 261 case T_FLOAT : /* nothing to do */ break; | |
| 262 case T_DOUBLE : /* nothing to do */ break; | |
| 263 case T_OBJECT : | |
| 264 // retrieve result from frame | |
| 304 | 265 __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); |
| 0 | 266 // and verify it |
| 267 __ verify_oop(rax); | |
| 268 break; | |
| 269 default : ShouldNotReachHere(); | |
| 270 } | |
| 271 __ ret(0); // return from result handler | |
| 272 return entry; | |
| 273 } | |
| 274 | |
| 275 address TemplateInterpreterGenerator::generate_safept_entry_for( | |
| 276 TosState state, | |
| 277 address runtime_entry) { | |
| 278 address entry = __ pc(); | |
| 279 __ push(state); | |
| 280 __ call_VM(noreg, runtime_entry); | |
| 281 __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); | |
| 282 return entry; | |
| 283 } | |
| 284 | |
| 285 | |
| 286 | |
| 287 // Helpers for commoning out cases in the various type of method entries. | |
| 288 // | |
| 289 | |
| 290 | |
| 291 // increment invocation count & check for overflow | |
| 292 // | |
| 293 // Note: checking for negative value instead of overflow | |
| 294 // so we have a 'sticky' overflow test | |
| 295 // | |
| 296 // rbx: method | |
| 297 // ecx: invocation counter | |
| 298 // | |
| 299 void InterpreterGenerator::generate_counter_incr( | |
| 300 Label* overflow, | |
| 301 Label* profile_method, | |
| 302 Label* profile_method_continue) { | |
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303 Label done; |
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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; | |
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308 Label no_mdo; |
| 1783 | 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); | |
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318 __ jmp(done); |
| 1783 | 319 } |
| 320 __ bind(no_mdo); | |
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321 // Increment counter in MethodCounters |
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322 const Address invocation_counter(rax, |
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323 MethodCounters::invocation_counter_offset() + |
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324 InvocationCounter::counter_offset()); |
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325 __ get_method_counters(rbx, rax, done); |
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326 __ increment_mask_and_jump(invocation_counter, increment, mask, rcx, |
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327 false, Assembler::zero, overflow); |
| 1783 | 328 __ bind(done); |
| 329 } else { | |
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330 const Address backedge_counter(rax, |
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331 MethodCounters::backedge_counter_offset() + |
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332 InvocationCounter::counter_offset()); |
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333 const Address invocation_counter(rax, |
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334 MethodCounters::invocation_counter_offset() + |
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335 InvocationCounter::counter_offset()); |
| 0 | 336 |
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337 __ get_method_counters(rbx, rax, done); |
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338 |
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339 if (ProfileInterpreter) { |
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340 __ incrementl(Address(rax, |
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341 MethodCounters::interpreter_invocation_counter_offset())); |
| 1783 | 342 } |
| 343 // Update standard invocation counters | |
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344 __ movl(rcx, invocation_counter); |
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345 __ incrementl(rcx, InvocationCounter::count_increment); |
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346 __ movl(invocation_counter, rcx); // save invocation count |
| 0 | 347 |
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348 __ movl(rax, backedge_counter); // load backedge counter |
| 1783 | 349 __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits |
| 0 | 350 |
| 1783 | 351 __ addl(rcx, rax); // add both counters |
| 0 | 352 |
| 1783 | 353 // profile_method is non-null only for interpreted method so |
| 354 // profile_method != NULL == !native_call | |
| 355 | |
| 356 if (ProfileInterpreter && profile_method != NULL) { | |
| 357 // Test to see if we should create a method data oop | |
| 358 __ cmp32(rcx, ExternalAddress((address)&InvocationCounter::InterpreterProfileLimit)); | |
| 359 __ jcc(Assembler::less, *profile_method_continue); | |
| 0 | 360 |
| 1783 | 361 // if no method data exists, go to profile_method |
| 362 __ test_method_data_pointer(rax, *profile_method); | |
| 363 } | |
| 364 | |
| 365 __ cmp32(rcx, ExternalAddress((address)&InvocationCounter::InterpreterInvocationLimit)); | |
| 366 __ jcc(Assembler::aboveEqual, *overflow); | |
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367 __ bind(done); |
| 0 | 368 } |
| 369 } | |
| 370 | |
| 371 void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { | |
| 372 | |
| 373 // Asm interpreter on entry | |
| 374 // r14 - locals | |
| 375 // r13 - bcp | |
| 376 // rbx - method | |
| 377 // edx - cpool --- DOES NOT APPEAR TO BE TRUE | |
| 378 // rbp - interpreter frame | |
| 379 | |
| 380 // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] | |
| 381 // Everything as it was on entry | |
| 382 // rdx is not restored. Doesn't appear to really be set. | |
| 383 | |
| 384 // InterpreterRuntime::frequency_counter_overflow takes two | |
| 385 // arguments, the first (thread) is passed by call_VM, the second | |
| 386 // indicates if the counter overflow occurs at a backwards branch | |
| 387 // (NULL bcp). We pass zero for it. The call returns the address | |
| 388 // of the verified entry point for the method or NULL if the | |
| 389 // compilation did not complete (either went background or bailed | |
| 390 // out). | |
| 391 __ movl(c_rarg1, 0); | |
| 392 __ call_VM(noreg, | |
| 393 CAST_FROM_FN_PTR(address, | |
| 394 InterpreterRuntime::frequency_counter_overflow), | |
| 395 c_rarg1); | |
| 396 | |
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397 __ movptr(rbx, Address(rbp, method_offset)); // restore Method* |
| 0 | 398 // Preserve invariant that r13/r14 contain bcp/locals of sender frame |
| 399 // and jump to the interpreted entry. | |
| 400 __ jmp(*do_continue, relocInfo::none); | |
| 401 } | |
| 402 | |
| 403 // See if we've got enough room on the stack for locals plus overhead. | |
| 404 // The expression stack grows down incrementally, so the normal guard | |
| 405 // page mechanism will work for that. | |
| 406 // | |
| 407 // NOTE: Since the additional locals are also always pushed (wasn't | |
| 408 // obvious in generate_method_entry) so the guard should work for them | |
| 409 // too. | |
| 410 // | |
| 411 // Args: | |
| 412 // rdx: number of additional locals this frame needs (what we must check) | |
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413 // rbx: Method* |
| 0 | 414 // |
| 415 // Kills: | |
| 416 // rax | |
| 417 void InterpreterGenerator::generate_stack_overflow_check(void) { | |
| 418 | |
| 419 // monitor entry size: see picture of stack set | |
| 420 // (generate_method_entry) and frame_amd64.hpp | |
| 421 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 422 | |
| 423 // total overhead size: entry_size + (saved rbp through expr stack | |
| 424 // bottom). be sure to change this if you add/subtract anything | |
| 425 // to/from the overhead area | |
| 426 const int overhead_size = | |
| 427 -(frame::interpreter_frame_initial_sp_offset * wordSize) + entry_size; | |
| 428 | |
| 429 const int page_size = os::vm_page_size(); | |
| 430 | |
| 431 Label after_frame_check; | |
| 432 | |
| 433 // see if the frame is greater than one page in size. If so, | |
| 434 // then we need to verify there is enough stack space remaining | |
| 435 // for the additional locals. | |
| 1506 | 436 __ cmpl(rdx, (page_size - overhead_size) / Interpreter::stackElementSize); |
| 0 | 437 __ jcc(Assembler::belowEqual, after_frame_check); |
| 438 | |
| 439 // compute rsp as if this were going to be the last frame on | |
| 440 // the stack before the red zone | |
| 441 | |
| 442 const Address stack_base(r15_thread, Thread::stack_base_offset()); | |
| 443 const Address stack_size(r15_thread, Thread::stack_size_offset()); | |
| 444 | |
| 445 // locals + overhead, in bytes | |
| 304 | 446 __ mov(rax, rdx); |
| 1506 | 447 __ shlptr(rax, Interpreter::logStackElementSize); // 2 slots per parameter. |
| 304 | 448 __ addptr(rax, overhead_size); |
| 0 | 449 |
| 450 #ifdef ASSERT | |
| 451 Label stack_base_okay, stack_size_okay; | |
| 452 // verify that thread stack base is non-zero | |
| 304 | 453 __ cmpptr(stack_base, (int32_t)NULL_WORD); |
| 0 | 454 __ jcc(Assembler::notEqual, stack_base_okay); |
| 455 __ stop("stack base is zero"); | |
| 456 __ bind(stack_base_okay); | |
| 457 // verify that thread stack size is non-zero | |
| 304 | 458 __ cmpptr(stack_size, 0); |
| 0 | 459 __ jcc(Assembler::notEqual, stack_size_okay); |
| 460 __ stop("stack size is zero"); | |
| 461 __ bind(stack_size_okay); | |
| 462 #endif | |
| 463 | |
| 464 // Add stack base to locals and subtract stack size | |
| 304 | 465 __ addptr(rax, stack_base); |
| 466 __ subptr(rax, stack_size); | |
| 0 | 467 |
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468 // Use the maximum number of pages we might bang. |
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469 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : |
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470 (StackRedPages+StackYellowPages); |
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471 |
| 0 | 472 // add in the red and yellow zone sizes |
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473 __ addptr(rax, max_pages * page_size); |
| 0 | 474 |
| 475 // check against the current stack bottom | |
| 304 | 476 __ cmpptr(rsp, rax); |
| 0 | 477 __ jcc(Assembler::above, after_frame_check); |
| 478 | |
| 4743 | 479 // Restore sender's sp as SP. This is necessary if the sender's |
| 480 // frame is an extended compiled frame (see gen_c2i_adapter()) | |
| 481 // and safer anyway in case of JSR292 adaptations. | |
| 482 | |
| 483 __ pop(rax); // return address must be moved if SP is changed | |
| 484 __ mov(rsp, r13); | |
| 485 __ push(rax); | |
| 486 | |
| 487 // Note: the restored frame is not necessarily interpreted. | |
| 488 // Use the shared runtime version of the StackOverflowError. | |
| 489 assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated"); | |
| 490 __ jump(ExternalAddress(StubRoutines::throw_StackOverflowError_entry())); | |
| 0 | 491 |
| 492 // all done with frame size check | |
| 493 __ bind(after_frame_check); | |
| 494 } | |
| 495 | |
| 496 // Allocate monitor and lock method (asm interpreter) | |
| 497 // | |
| 498 // Args: | |
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499 // rbx: Method* |
| 0 | 500 // r14: locals |
| 501 // | |
| 502 // Kills: | |
| 503 // rax | |
| 504 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, ...(param regs) | |
| 505 // rscratch1, rscratch2 (scratch regs) | |
| 506 void InterpreterGenerator::lock_method(void) { | |
| 507 // synchronize method | |
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508 const Address access_flags(rbx, Method::access_flags_offset()); |
| 0 | 509 const Address monitor_block_top( |
| 510 rbp, | |
| 511 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 512 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 513 | |
| 514 #ifdef ASSERT | |
| 515 { | |
| 516 Label L; | |
| 517 __ movl(rax, access_flags); | |
| 518 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 519 __ jcc(Assembler::notZero, L); | |
| 520 __ stop("method doesn't need synchronization"); | |
| 521 __ bind(L); | |
| 522 } | |
| 523 #endif // ASSERT | |
| 524 | |
| 525 // get synchronization object | |
| 526 { | |
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527 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
| 0 | 528 Label done; |
| 529 __ movl(rax, access_flags); | |
| 530 __ testl(rax, JVM_ACC_STATIC); | |
| 531 // get receiver (assume this is frequent case) | |
| 304 | 532 __ movptr(rax, Address(r14, Interpreter::local_offset_in_bytes(0))); |
| 0 | 533 __ jcc(Assembler::zero, done); |
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534 __ movptr(rax, Address(rbx, Method::const_offset())); |
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535 __ movptr(rax, Address(rax, ConstMethod::constants_offset())); |
| 304 | 536 __ movptr(rax, Address(rax, |
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537 ConstantPool::pool_holder_offset_in_bytes())); |
| 304 | 538 __ movptr(rax, Address(rax, mirror_offset)); |
| 0 | 539 |
| 540 #ifdef ASSERT | |
| 541 { | |
| 542 Label L; | |
| 304 | 543 __ testptr(rax, rax); |
| 0 | 544 __ jcc(Assembler::notZero, L); |
| 545 __ stop("synchronization object is NULL"); | |
| 546 __ bind(L); | |
| 547 } | |
| 548 #endif // ASSERT | |
| 549 | |
| 550 __ bind(done); | |
| 551 } | |
| 552 | |
| 553 // add space for monitor & lock | |
| 304 | 554 __ subptr(rsp, entry_size); // add space for a monitor entry |
| 555 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
| 0 | 556 // store object |
| 304 | 557 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); |
| 558 __ movptr(c_rarg1, rsp); // object address | |
| 0 | 559 __ lock_object(c_rarg1); |
| 560 } | |
| 561 | |
| 562 // Generate a fixed interpreter frame. This is identical setup for | |
| 563 // interpreted methods and for native methods hence the shared code. | |
| 564 // | |
| 565 // Args: | |
| 566 // rax: return address | |
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567 // rbx: Method* |
| 0 | 568 // r14: pointer to locals |
| 569 // r13: sender sp | |
| 570 // rdx: cp cache | |
| 571 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
| 572 // initialize fixed part of activation frame | |
| 304 | 573 __ push(rax); // save return address |
| 0 | 574 __ enter(); // save old & set new rbp |
| 304 | 575 __ push(r13); // set sender sp |
| 576 __ push((int)NULL_WORD); // leave last_sp as null | |
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577 __ movptr(r13, Address(rbx, Method::const_offset())); // get ConstMethod* |
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578 __ lea(r13, Address(r13, ConstMethod::codes_offset())); // get codebase |
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579 __ push(rbx); // save Method* |
| 0 | 580 if (ProfileInterpreter) { |
| 581 Label method_data_continue; | |
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582 __ movptr(rdx, Address(rbx, in_bytes(Method::method_data_offset()))); |
| 304 | 583 __ testptr(rdx, rdx); |
| 0 | 584 __ jcc(Assembler::zero, method_data_continue); |
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585 __ addptr(rdx, in_bytes(MethodData::data_offset())); |
| 0 | 586 __ bind(method_data_continue); |
| 304 | 587 __ push(rdx); // set the mdp (method data pointer) |
| 0 | 588 } else { |
| 304 | 589 __ push(0); |
| 0 | 590 } |
| 591 | |
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592 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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593 __ movptr(rdx, Address(rdx, ConstMethod::constants_offset())); |
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594 __ movptr(rdx, Address(rdx, ConstantPool::cache_offset_in_bytes())); |
| 304 | 595 __ push(rdx); // set constant pool cache |
| 596 __ push(r14); // set locals pointer | |
| 0 | 597 if (native_call) { |
| 304 | 598 __ push(0); // no bcp |
| 0 | 599 } else { |
| 304 | 600 __ push(r13); // set bcp |
| 0 | 601 } |
| 304 | 602 __ push(0); // reserve word for pointer to expression stack bottom |
| 603 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
| 0 | 604 } |
| 605 | |
| 606 // End of helpers | |
| 607 | |
| 304 | 608 // Various method entries |
| 609 //------------------------------------------------------------------------------------------------------------------------ | |
| 610 // | |
| 611 // | |
| 612 | |
| 613 // Call an accessor method (assuming it is resolved, otherwise drop | |
| 614 // into vanilla (slow path) entry | |
| 615 address InterpreterGenerator::generate_accessor_entry(void) { | |
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616 // rbx: Method* |
| 304 | 617 |
| 618 // r13: senderSP must preserver for slow path, set SP to it on fast path | |
| 619 | |
| 620 address entry_point = __ pc(); | |
| 621 Label xreturn_path; | |
| 622 | |
| 623 // do fastpath for resolved accessor methods | |
| 624 if (UseFastAccessorMethods) { | |
| 625 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites | |
| 626 // thereof; parameter size = 1 | |
| 627 // Note: We can only use this code if the getfield has been resolved | |
| 628 // and if we don't have a null-pointer exception => check for | |
| 629 // these conditions first and use slow path if necessary. | |
| 630 Label slow_path; | |
| 631 // If we need a safepoint check, generate full interpreter entry. | |
| 632 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
| 633 SafepointSynchronize::_not_synchronized); | |
| 634 | |
| 635 __ jcc(Assembler::notEqual, slow_path); | |
| 636 // rbx: method | |
| 637 __ movptr(rax, Address(rsp, wordSize)); | |
| 638 | |
| 639 // check if local 0 != NULL and read field | |
| 640 __ testptr(rax, rax); | |
| 641 __ jcc(Assembler::zero, slow_path); | |
| 642 | |
| 643 // read first instruction word and extract bytecode @ 1 and index @ 2 | |
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644 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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645 __ movptr(rdi, Address(rdx, ConstMethod::constants_offset())); |
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646 __ movl(rdx, Address(rdx, ConstMethod::codes_offset())); |
| 304 | 647 // Shift codes right to get the index on the right. |
| 648 // The bytecode fetched looks like <index><0xb4><0x2a> | |
| 649 __ shrl(rdx, 2 * BitsPerByte); | |
| 650 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
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651 __ movptr(rdi, Address(rdi, ConstantPool::cache_offset_in_bytes())); |
| 304 | 652 |
| 653 // rax: local 0 | |
| 654 // rbx: method | |
| 655 // rdx: constant pool cache index | |
| 656 // rdi: constant pool cache | |
| 657 | |
| 658 // check if getfield has been resolved and read constant pool cache entry | |
| 659 // check the validity of the cache entry by testing whether _indices field | |
| 660 // contains Bytecode::_getfield in b1 byte. | |
| 661 assert(in_words(ConstantPoolCacheEntry::size()) == 4, | |
| 662 "adjust shift below"); | |
| 663 __ movl(rcx, | |
| 664 Address(rdi, | |
| 665 rdx, | |
| 666 Address::times_8, | |
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667 ConstantPoolCache::base_offset() + |
| 304 | 668 ConstantPoolCacheEntry::indices_offset())); |
| 669 __ shrl(rcx, 2 * BitsPerByte); | |
| 670 __ andl(rcx, 0xFF); | |
| 671 __ cmpl(rcx, Bytecodes::_getfield); | |
| 672 __ jcc(Assembler::notEqual, slow_path); | |
| 673 | |
| 674 // Note: constant pool entry is not valid before bytecode is resolved | |
| 675 __ movptr(rcx, | |
| 676 Address(rdi, | |
| 677 rdx, | |
| 678 Address::times_8, | |
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679 ConstantPoolCache::base_offset() + |
| 304 | 680 ConstantPoolCacheEntry::f2_offset())); |
| 681 // edx: flags | |
| 682 __ movl(rdx, | |
| 683 Address(rdi, | |
| 684 rdx, | |
| 685 Address::times_8, | |
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686 ConstantPoolCache::base_offset() + |
| 304 | 687 ConstantPoolCacheEntry::flags_offset())); |
| 688 | |
| 689 Label notObj, notInt, notByte, notShort; | |
| 690 const Address field_address(rax, rcx, Address::times_1); | |
| 691 | |
| 692 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
| 693 // because they are different sizes. | |
| 694 // Use the type from the constant pool cache | |
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695 __ shrl(rdx, ConstantPoolCacheEntry::tos_state_shift); |
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696 // Make sure we don't need to mask edx after the above shift |
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697 ConstantPoolCacheEntry::verify_tos_state_shift(); |
| 304 | 698 |
| 699 __ cmpl(rdx, atos); | |
| 700 __ jcc(Assembler::notEqual, notObj); | |
| 701 // atos | |
| 702 __ load_heap_oop(rax, field_address); | |
| 703 __ jmp(xreturn_path); | |
| 704 | |
| 705 __ bind(notObj); | |
| 706 __ cmpl(rdx, itos); | |
| 707 __ jcc(Assembler::notEqual, notInt); | |
| 708 // itos | |
| 709 __ movl(rax, field_address); | |
| 710 __ jmp(xreturn_path); | |
| 711 | |
| 712 __ bind(notInt); | |
| 713 __ cmpl(rdx, btos); | |
| 714 __ jcc(Assembler::notEqual, notByte); | |
| 715 // btos | |
| 716 __ load_signed_byte(rax, field_address); | |
| 717 __ jmp(xreturn_path); | |
| 718 | |
| 719 __ bind(notByte); | |
| 720 __ cmpl(rdx, stos); | |
| 721 __ jcc(Assembler::notEqual, notShort); | |
| 722 // stos | |
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723 __ load_signed_short(rax, field_address); |
| 304 | 724 __ jmp(xreturn_path); |
| 725 | |
| 726 __ bind(notShort); | |
| 727 #ifdef ASSERT | |
| 728 Label okay; | |
| 729 __ cmpl(rdx, ctos); | |
| 730 __ jcc(Assembler::equal, okay); | |
| 731 __ stop("what type is this?"); | |
| 732 __ bind(okay); | |
| 733 #endif | |
| 734 // ctos | |
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735 __ load_unsigned_short(rax, field_address); |
| 304 | 736 |
| 737 __ bind(xreturn_path); | |
| 738 | |
| 739 // _ireturn/_areturn | |
| 740 __ pop(rdi); | |
| 741 __ mov(rsp, r13); | |
| 742 __ jmp(rdi); | |
| 743 __ ret(0); | |
| 744 | |
| 745 // generate a vanilla interpreter entry as the slow path | |
| 746 __ bind(slow_path); | |
| 747 (void) generate_normal_entry(false); | |
| 748 } else { | |
| 749 (void) generate_normal_entry(false); | |
| 750 } | |
| 751 | |
| 752 return entry_point; | |
| 753 } | |
| 754 | |
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755 // Method entry for java.lang.ref.Reference.get. |
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756 address InterpreterGenerator::generate_Reference_get_entry(void) { |
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757 #if INCLUDE_ALL_GCS |
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758 // Code: _aload_0, _getfield, _areturn |
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759 // parameter size = 1 |
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760 // |
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761 // The code that gets generated by this routine is split into 2 parts: |
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762 // 1. The "intrinsified" code for G1 (or any SATB based GC), |
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763 // 2. The slow path - which is an expansion of the regular method entry. |
|
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|
764 // |
|
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|
765 // Notes:- |
|
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|
766 // * In the G1 code we do not check whether we need to block for |
|
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767 // a safepoint. If G1 is enabled then we must execute the specialized |
|
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|
768 // code for Reference.get (except when the Reference object is null) |
|
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|
769 // so that we can log the value in the referent field with an SATB |
|
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770 // update buffer. |
|
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|
771 // If the code for the getfield template is modified so that the |
|
e1162778c1c8
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|
772 // G1 pre-barrier code is executed when the current method is |
|
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773 // Reference.get() then going through the normal method entry |
|
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774 // will be fine. |
|
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|
775 // * The G1 code can, however, check the receiver object (the instance |
|
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776 // of java.lang.Reference) and jump to the slow path if null. If the |
|
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|
777 // Reference object is null then we obviously cannot fetch the referent |
|
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778 // and so we don't need to call the G1 pre-barrier. Thus we can use the |
|
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779 // regular method entry code to generate the NPE. |
|
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|
780 // |
|
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781 // This code is based on generate_accessor_enty. |
|
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782 // |
|
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783 // rbx: Method* |
|
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|
784 |
|
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785 // r13: senderSP must preserve for slow path, set SP to it on fast path |
|
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|
786 |
|
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|
787 address entry = __ pc(); |
|
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788 |
|
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|
789 const int referent_offset = java_lang_ref_Reference::referent_offset; |
|
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|
790 guarantee(referent_offset > 0, "referent offset not initialized"); |
|
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791 |
|
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792 if (UseG1GC) { |
|
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793 Label slow_path; |
|
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794 // rbx: method |
|
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|
795 |
|
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|
796 // Check if local 0 != NULL |
|
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797 // If the receiver is null then it is OK to jump to the slow path. |
|
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798 __ movptr(rax, Address(rsp, wordSize)); |
|
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799 |
|
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800 __ testptr(rax, rax); |
|
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801 __ jcc(Assembler::zero, slow_path); |
|
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|
802 |
|
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803 // rax: local 0 |
|
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|
804 // rbx: method (but can be used as scratch now) |
|
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805 // rdx: scratch |
|
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806 // rdi: scratch |
|
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807 |
|
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808 // Generate the G1 pre-barrier code to log the value of |
|
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809 // the referent field in an SATB buffer. |
|
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810 |
|
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811 // Load the value of the referent field. |
|
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812 const Address field_address(rax, referent_offset); |
|
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813 __ load_heap_oop(rax, field_address); |
|
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814 |
|
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815 // Generate the G1 pre-barrier code to log the value of |
|
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816 // the referent field in an SATB buffer. |
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817 __ g1_write_barrier_pre(noreg /* obj */, |
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818 rax /* pre_val */, |
|
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819 r15_thread /* thread */, |
|
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820 rbx /* tmp */, |
|
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821 true /* tosca_live */, |
|
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822 true /* expand_call */); |
|
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823 |
|
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|
824 // _areturn |
|
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825 __ pop(rdi); // get return address |
|
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826 __ mov(rsp, r13); // set sp to sender sp |
|
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827 __ jmp(rdi); |
|
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828 __ ret(0); |
|
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|
829 |
|
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|
830 // generate a vanilla interpreter entry as the slow path |
|
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831 __ bind(slow_path); |
|
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|
832 (void) generate_normal_entry(false); |
|
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|
833 |
|
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|
834 return entry; |
|
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|
835 } |
|
8001
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836 #endif // INCLUDE_ALL_GCS |
|
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|
837 |
|
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838 // If G1 is not enabled then attempt to go through the accessor entry point |
|
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839 // Reference.get is an accessor |
|
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|
840 return generate_accessor_entry(); |
|
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|
841 } |
|
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|
842 |
|
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|
843 |
| 0 | 844 // Interpreter stub for calling a native method. (asm interpreter) |
| 845 // This sets up a somewhat different looking stack for calling the | |
| 846 // native method than the typical interpreter frame setup. | |
| 847 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
| 848 // determine code generation flags | |
| 849 bool inc_counter = UseCompiler || CountCompiledCalls; | |
| 850 | |
|
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851 // rbx: Method* |
| 0 | 852 // r13: sender sp |
| 853 | |
| 854 address entry_point = __ pc(); | |
| 855 | |
|
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8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
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856 const Address constMethod (rbx, Method::const_offset()); |
|
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857 const Address access_flags (rbx, Method::access_flags_offset()); |
|
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858 const Address size_of_parameters(rcx, ConstMethod:: |
|
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|
859 size_of_parameters_offset()); |
|
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|
860 |
| 0 | 861 |
| 862 // get parameter size (always needed) | |
|
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|
863 __ movptr(rcx, constMethod); |
|
622
56aae7be60d4
6812678: macro assembler needs delayed binding of a few constants (for 6655638)
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|
864 __ load_unsigned_short(rcx, size_of_parameters); |
| 0 | 865 |
| 866 // native calls don't need the stack size check since they have no | |
| 867 // expression stack and the arguments are already on the stack and | |
| 868 // we only add a handful of words to the stack | |
| 869 | |
|
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870 // rbx: Method* |
| 0 | 871 // rcx: size of parameters |
| 872 // r13: sender sp | |
| 304 | 873 __ pop(rax); // get return address |
| 0 | 874 |
| 875 // for natives the size of locals is zero | |
| 876 | |
| 877 // compute beginning of parameters (r14) | |
| 304 | 878 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
| 0 | 879 |
| 880 // add 2 zero-initialized slots for native calls | |
| 881 // initialize result_handler slot | |
| 304 | 882 __ push((int) NULL_WORD); |
| 0 | 883 // slot for oop temp |
| 884 // (static native method holder mirror/jni oop result) | |
| 304 | 885 __ push((int) NULL_WORD); |
| 0 | 886 |
| 887 // initialize fixed part of activation frame | |
| 888 generate_fixed_frame(true); | |
| 889 | |
| 890 // make sure method is native & not abstract | |
| 891 #ifdef ASSERT | |
| 892 __ movl(rax, access_flags); | |
| 893 { | |
| 894 Label L; | |
| 895 __ testl(rax, JVM_ACC_NATIVE); | |
| 896 __ jcc(Assembler::notZero, L); | |
| 897 __ stop("tried to execute non-native method as native"); | |
| 898 __ bind(L); | |
| 899 } | |
| 900 { | |
| 901 Label L; | |
| 902 __ testl(rax, JVM_ACC_ABSTRACT); | |
| 903 __ jcc(Assembler::zero, L); | |
| 904 __ stop("tried to execute abstract method in interpreter"); | |
| 905 __ bind(L); | |
| 906 } | |
| 907 #endif | |
| 908 | |
| 909 // Since at this point in the method invocation the exception handler | |
| 910 // would try to exit the monitor of synchronized methods which hasn't | |
| 911 // been entered yet, we set the thread local variable | |
| 912 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
| 913 // check this flag. | |
| 914 | |
| 915 const Address do_not_unlock_if_synchronized(r15_thread, | |
| 916 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 917 __ movbool(do_not_unlock_if_synchronized, true); | |
| 918 | |
| 919 // increment invocation count & check for overflow | |
| 920 Label invocation_counter_overflow; | |
| 921 if (inc_counter) { | |
| 922 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
| 923 } | |
| 924 | |
| 925 Label continue_after_compile; | |
| 926 __ bind(continue_after_compile); | |
| 927 | |
| 928 bang_stack_shadow_pages(true); | |
| 929 | |
| 930 // reset the _do_not_unlock_if_synchronized flag | |
| 931 __ movbool(do_not_unlock_if_synchronized, false); | |
| 932 | |
| 933 // check for synchronized methods | |
| 934 // Must happen AFTER invocation_counter check and stack overflow check, | |
| 935 // so method is not locked if overflows. | |
| 936 if (synchronized) { | |
| 937 lock_method(); | |
| 938 } else { | |
| 939 // no synchronization necessary | |
| 940 #ifdef ASSERT | |
| 941 { | |
| 942 Label L; | |
| 943 __ movl(rax, access_flags); | |
| 944 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 945 __ jcc(Assembler::zero, L); | |
| 946 __ stop("method needs synchronization"); | |
| 947 __ bind(L); | |
| 948 } | |
| 949 #endif | |
| 950 } | |
| 951 | |
| 952 // start execution | |
| 953 #ifdef ASSERT | |
| 954 { | |
| 955 Label L; | |
| 956 const Address monitor_block_top(rbp, | |
| 957 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 304 | 958 __ movptr(rax, monitor_block_top); |
| 959 __ cmpptr(rax, rsp); | |
| 0 | 960 __ jcc(Assembler::equal, L); |
| 961 __ stop("broken stack frame setup in interpreter"); | |
| 962 __ bind(L); | |
| 963 } | |
| 964 #endif | |
| 965 | |
| 966 // jvmti support | |
| 967 __ notify_method_entry(); | |
| 968 | |
| 969 // work registers | |
| 970 const Register method = rbx; | |
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971 const Register t = r11; |
| 0 | 972 |
| 973 // allocate space for parameters | |
| 974 __ get_method(method); | |
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975 __ movptr(t, Address(method, Method::const_offset())); |
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976 __ load_unsigned_short(t, Address(t, ConstMethod::size_of_parameters_offset())); |
| 1506 | 977 __ shll(t, Interpreter::logStackElementSize); |
| 0 | 978 |
| 304 | 979 __ subptr(rsp, t); |
| 980 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows | |
| 605 | 981 __ andptr(rsp, -16); // must be 16 byte boundary (see amd64 ABI) |
| 0 | 982 |
| 983 // get signature handler | |
| 984 { | |
| 985 Label L; | |
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986 __ movptr(t, Address(method, Method::signature_handler_offset())); |
| 304 | 987 __ testptr(t, t); |
| 0 | 988 __ jcc(Assembler::notZero, L); |
| 989 __ call_VM(noreg, | |
| 990 CAST_FROM_FN_PTR(address, | |
| 991 InterpreterRuntime::prepare_native_call), | |
| 992 method); | |
| 993 __ get_method(method); | |
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994 __ movptr(t, Address(method, Method::signature_handler_offset())); |
| 0 | 995 __ bind(L); |
| 996 } | |
| 997 | |
| 998 // call signature handler | |
| 999 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == r14, | |
| 1000 "adjust this code"); | |
| 1001 assert(InterpreterRuntime::SignatureHandlerGenerator::to() == rsp, | |
| 1002 "adjust this code"); | |
| 1003 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == rscratch1, | |
| 1004 "adjust this code"); | |
| 1005 | |
| 1006 // The generated handlers do not touch RBX (the method oop). | |
| 1007 // However, large signatures cannot be cached and are generated | |
| 1008 // each time here. The slow-path generator can do a GC on return, | |
| 1009 // so we must reload it after the call. | |
| 1010 __ call(t); | |
| 1011 __ get_method(method); // slow path can do a GC, reload RBX | |
| 1012 | |
| 1013 | |
| 1014 // result handler is in rax | |
| 1015 // set result handler | |
| 304 | 1016 __ movptr(Address(rbp, |
| 1017 (frame::interpreter_frame_result_handler_offset) * wordSize), | |
| 1018 rax); | |
| 0 | 1019 |
| 1020 // pass mirror handle if static call | |
| 1021 { | |
| 1022 Label L; | |
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1023 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
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1024 __ movl(t, Address(method, Method::access_flags_offset())); |
| 0 | 1025 __ testl(t, JVM_ACC_STATIC); |
| 1026 __ jcc(Assembler::zero, L); | |
| 1027 // get mirror | |
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1028 __ movptr(t, Address(method, Method::const_offset())); |
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1029 __ movptr(t, Address(t, ConstMethod::constants_offset())); |
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1030 __ movptr(t, Address(t, ConstantPool::pool_holder_offset_in_bytes())); |
| 304 | 1031 __ movptr(t, Address(t, mirror_offset)); |
| 0 | 1032 // copy mirror into activation frame |
| 304 | 1033 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), |
| 0 | 1034 t); |
| 1035 // pass handle to mirror | |
| 304 | 1036 __ lea(c_rarg1, |
| 1037 Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); | |
| 0 | 1038 __ bind(L); |
| 1039 } | |
| 1040 | |
| 1041 // get native function entry point | |
| 1042 { | |
| 1043 Label L; | |
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1044 __ movptr(rax, Address(method, Method::native_function_offset())); |
| 0 | 1045 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
| 1046 __ movptr(rscratch2, unsatisfied.addr()); | |
| 304 | 1047 __ cmpptr(rax, rscratch2); |
| 0 | 1048 __ jcc(Assembler::notEqual, L); |
| 1049 __ call_VM(noreg, | |
| 1050 CAST_FROM_FN_PTR(address, | |
| 1051 InterpreterRuntime::prepare_native_call), | |
| 1052 method); | |
| 1053 __ get_method(method); | |
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1054 __ movptr(rax, Address(method, Method::native_function_offset())); |
| 0 | 1055 __ bind(L); |
| 1056 } | |
| 1057 | |
| 1058 // pass JNIEnv | |
| 304 | 1059 __ lea(c_rarg0, Address(r15_thread, JavaThread::jni_environment_offset())); |
| 0 | 1060 |
| 1061 // It is enough that the pc() points into the right code | |
| 1062 // segment. It does not have to be the correct return pc. | |
| 1063 __ set_last_Java_frame(rsp, rbp, (address) __ pc()); | |
| 1064 | |
| 1065 // change thread state | |
| 1066 #ifdef ASSERT | |
| 1067 { | |
| 1068 Label L; | |
| 1069 __ movl(t, Address(r15_thread, JavaThread::thread_state_offset())); | |
| 1070 __ cmpl(t, _thread_in_Java); | |
| 1071 __ jcc(Assembler::equal, L); | |
| 1072 __ stop("Wrong thread state in native stub"); | |
| 1073 __ bind(L); | |
| 1074 } | |
| 1075 #endif | |
| 1076 | |
| 1077 // Change state to native | |
| 1078 | |
| 1079 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
| 1080 _thread_in_native); | |
| 1081 | |
| 1082 // Call the native method. | |
| 1083 __ call(rax); | |
| 1084 // result potentially in rax or xmm0 | |
| 1085 | |
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1086 // Verify or restore cpu control state after JNI call |
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1087 __ restore_cpu_control_state_after_jni(); |
| 0 | 1088 |
| 1089 // NOTE: The order of these pushes is known to frame::interpreter_frame_result | |
| 1090 // in order to extract the result of a method call. If the order of these | |
| 1091 // pushes change or anything else is added to the stack then the code in | |
| 1092 // interpreter_frame_result must also change. | |
| 1093 | |
| 1094 __ push(dtos); | |
| 1095 __ push(ltos); | |
| 1096 | |
| 1097 // change thread state | |
| 1098 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), | |
| 1099 _thread_in_native_trans); | |
| 1100 | |
| 1101 if (os::is_MP()) { | |
| 1102 if (UseMembar) { | |
| 1103 // Force this write out before the read below | |
| 1104 __ membar(Assembler::Membar_mask_bits( | |
| 1105 Assembler::LoadLoad | Assembler::LoadStore | | |
| 1106 Assembler::StoreLoad | Assembler::StoreStore)); | |
| 1107 } else { | |
| 1108 // Write serialization page so VM thread can do a pseudo remote membar. | |
| 1109 // We use the current thread pointer to calculate a thread specific | |
| 1110 // offset to write to within the page. This minimizes bus traffic | |
| 1111 // due to cache line collision. | |
| 1112 __ serialize_memory(r15_thread, rscratch2); | |
| 1113 } | |
| 1114 } | |
| 1115 | |
| 1116 // check for safepoint operation in progress and/or pending suspend requests | |
| 1117 { | |
| 1118 Label Continue; | |
| 1119 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
| 1120 SafepointSynchronize::_not_synchronized); | |
| 1121 | |
| 1122 Label L; | |
| 1123 __ jcc(Assembler::notEqual, L); | |
| 1124 __ cmpl(Address(r15_thread, JavaThread::suspend_flags_offset()), 0); | |
| 1125 __ jcc(Assembler::equal, Continue); | |
| 1126 __ bind(L); | |
| 1127 | |
| 1128 // Don't use call_VM as it will see a possible pending exception | |
| 1129 // and forward it and never return here preventing us from | |
| 1130 // clearing _last_native_pc down below. Also can't use | |
| 1131 // call_VM_leaf either as it will check to see if r13 & r14 are | |
| 1132 // preserved and correspond to the bcp/locals pointers. So we do a | |
| 1133 // runtime call by hand. | |
| 1134 // | |
| 304 | 1135 __ mov(c_rarg0, r15_thread); |
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1136 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
| 304 | 1137 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
| 1138 __ andptr(rsp, -16); // align stack as required by ABI | |
| 0 | 1139 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans))); |
| 304 | 1140 __ mov(rsp, r12); // restore sp |
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1141 __ reinit_heapbase(); |
| 0 | 1142 __ bind(Continue); |
| 1143 } | |
| 1144 | |
| 1145 // change thread state | |
| 1146 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
| 1147 | |
| 1148 // reset_last_Java_frame | |
| 1149 __ reset_last_Java_frame(true, true); | |
| 1150 | |
| 1151 // reset handle block | |
| 304 | 1152 __ movptr(t, Address(r15_thread, JavaThread::active_handles_offset())); |
| 1153 __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD); | |
| 0 | 1154 |
| 1155 // If result is an oop unbox and store it in frame where gc will see it | |
| 1156 // and result handler will pick it up | |
| 1157 | |
| 1158 { | |
| 1159 Label no_oop, store_result; | |
| 1160 __ lea(t, ExternalAddress(AbstractInterpreter::result_handler(T_OBJECT))); | |
| 304 | 1161 __ cmpptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
| 0 | 1162 __ jcc(Assembler::notEqual, no_oop); |
| 1163 // retrieve result | |
| 1164 __ pop(ltos); | |
| 304 | 1165 __ testptr(rax, rax); |
| 0 | 1166 __ jcc(Assembler::zero, store_result); |
| 304 | 1167 __ movptr(rax, Address(rax, 0)); |
| 0 | 1168 __ bind(store_result); |
| 304 | 1169 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize), rax); |
| 0 | 1170 // keep stack depth as expected by pushing oop which will eventually be discarde |
| 1171 __ push(ltos); | |
| 1172 __ bind(no_oop); | |
| 1173 } | |
| 1174 | |
| 1175 | |
| 1176 { | |
| 1177 Label no_reguard; | |
| 1178 __ cmpl(Address(r15_thread, JavaThread::stack_guard_state_offset()), | |
| 1179 JavaThread::stack_guard_yellow_disabled); | |
| 1180 __ jcc(Assembler::notEqual, no_reguard); | |
| 1181 | |
| 304 | 1182 __ pusha(); // XXX only save smashed registers |
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1183 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
| 304 | 1184 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows |
| 1185 __ andptr(rsp, -16); // align stack as required by ABI | |
| 0 | 1186 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
| 304 | 1187 __ mov(rsp, r12); // restore sp |
| 1188 __ popa(); // XXX only restore smashed registers | |
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1189 __ reinit_heapbase(); |
| 0 | 1190 |
| 1191 __ bind(no_reguard); | |
| 1192 } | |
| 1193 | |
| 1194 | |
| 1195 // The method register is junk from after the thread_in_native transition | |
| 1196 // until here. Also can't call_VM until the bcp has been | |
| 1197 // restored. Need bcp for throwing exception below so get it now. | |
| 1198 __ get_method(method); | |
| 1199 | |
| 1200 // restore r13 to have legal interpreter frame, i.e., bci == 0 <=> | |
| 1201 // r13 == code_base() | |
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1202 __ movptr(r13, Address(method, Method::const_offset())); // get ConstMethod* |
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1203 __ lea(r13, Address(r13, ConstMethod::codes_offset())); // get codebase |
| 0 | 1204 // handle exceptions (exception handling will handle unlocking!) |
| 1205 { | |
| 1206 Label L; | |
| 304 | 1207 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); |
| 0 | 1208 __ jcc(Assembler::zero, L); |
| 1209 // Note: At some point we may want to unify this with the code | |
| 1210 // used in call_VM_base(); i.e., we should use the | |
| 1211 // StubRoutines::forward_exception code. For now this doesn't work | |
| 1212 // here because the rsp is not correctly set at this point. | |
| 1213 __ MacroAssembler::call_VM(noreg, | |
| 1214 CAST_FROM_FN_PTR(address, | |
| 1215 InterpreterRuntime::throw_pending_exception)); | |
| 1216 __ should_not_reach_here(); | |
| 1217 __ bind(L); | |
| 1218 } | |
| 1219 | |
| 1220 // do unlocking if necessary | |
| 1221 { | |
| 1222 Label L; | |
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1223 __ movl(t, Address(method, Method::access_flags_offset())); |
| 0 | 1224 __ testl(t, JVM_ACC_SYNCHRONIZED); |
| 1225 __ jcc(Assembler::zero, L); | |
| 1226 // the code below should be shared with interpreter macro | |
| 1227 // assembler implementation | |
| 1228 { | |
| 1229 Label unlock; | |
| 1230 // BasicObjectLock will be first in list, since this is a | |
| 1231 // synchronized method. However, need to check that the object | |
| 1232 // has not been unlocked by an explicit monitorexit bytecode. | |
| 1233 const Address monitor(rbp, | |
| 1234 (intptr_t)(frame::interpreter_frame_initial_sp_offset * | |
| 1235 wordSize - sizeof(BasicObjectLock))); | |
| 1236 | |
| 1237 // monitor expect in c_rarg1 for slow unlock path | |
| 304 | 1238 __ lea(c_rarg1, monitor); // address of first monitor |
| 0 | 1239 |
| 304 | 1240 __ movptr(t, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
| 1241 __ testptr(t, t); | |
| 0 | 1242 __ jcc(Assembler::notZero, unlock); |
| 1243 | |
| 1244 // Entry already unlocked, need to throw exception | |
| 1245 __ MacroAssembler::call_VM(noreg, | |
| 1246 CAST_FROM_FN_PTR(address, | |
| 1247 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 1248 __ should_not_reach_here(); | |
| 1249 | |
| 1250 __ bind(unlock); | |
| 1251 __ unlock_object(c_rarg1); | |
| 1252 } | |
| 1253 __ bind(L); | |
| 1254 } | |
| 1255 | |
| 1256 // jvmti support | |
| 1257 // Note: This must happen _after_ handling/throwing any exceptions since | |
| 1258 // the exception handler code notifies the runtime of method exits | |
| 1259 // too. If this happens before, method entry/exit notifications are | |
| 1260 // not properly paired (was bug - gri 11/22/99). | |
| 1261 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
| 1262 | |
| 1263 // restore potential result in edx:eax, call result handler to | |
| 1264 // restore potential result in ST0 & handle result | |
| 1265 | |
| 1266 __ pop(ltos); | |
| 1267 __ pop(dtos); | |
| 1268 | |
| 304 | 1269 __ movptr(t, Address(rbp, |
| 1270 (frame::interpreter_frame_result_handler_offset) * wordSize)); | |
| 0 | 1271 __ call(t); |
| 1272 | |
| 1273 // remove activation | |
| 304 | 1274 __ movptr(t, Address(rbp, |
| 1275 frame::interpreter_frame_sender_sp_offset * | |
| 1276 wordSize)); // get sender sp | |
| 0 | 1277 __ leave(); // remove frame anchor |
| 304 | 1278 __ pop(rdi); // get return address |
| 1279 __ mov(rsp, t); // set sp to sender sp | |
| 0 | 1280 __ jmp(rdi); |
| 1281 | |
| 1282 if (inc_counter) { | |
| 1283 // Handle overflow of counter and compile method | |
| 1284 __ bind(invocation_counter_overflow); | |
| 1285 generate_counter_overflow(&continue_after_compile); | |
| 1286 } | |
| 1287 | |
| 1288 return entry_point; | |
| 1289 } | |
| 1290 | |
| 1291 // | |
| 1292 // Generic interpreted method entry to (asm) interpreter | |
| 1293 // | |
| 1294 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
| 1295 // determine code generation flags | |
| 1296 bool inc_counter = UseCompiler || CountCompiledCalls; | |
| 1297 | |
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1298 // ebx: Method* |
| 0 | 1299 // r13: sender sp |
| 1300 address entry_point = __ pc(); | |
| 1301 | |
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1302 const Address constMethod(rbx, Method::const_offset()); |
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1303 const Address access_flags(rbx, Method::access_flags_offset()); |
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1304 const Address size_of_parameters(rdx, |
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1305 ConstMethod::size_of_parameters_offset()); |
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1306 const Address size_of_locals(rdx, ConstMethod::size_of_locals_offset()); |
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1307 |
| 0 | 1308 |
| 1309 // get parameter size (always needed) | |
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1310 __ movptr(rdx, constMethod); |
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1311 __ load_unsigned_short(rcx, size_of_parameters); |
| 0 | 1312 |
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1313 // rbx: Method* |
| 0 | 1314 // rcx: size of parameters |
| 1315 // r13: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
| 1316 | |
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1317 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
| 0 | 1318 __ subl(rdx, rcx); // rdx = no. of additional locals |
| 1319 | |
| 1320 // YYY | |
| 1321 // __ incrementl(rdx); | |
| 1322 // __ andl(rdx, -2); | |
| 1323 | |
| 1324 // see if we've got enough room on the stack for locals plus overhead. | |
| 1325 generate_stack_overflow_check(); | |
| 1326 | |
| 1327 // get return address | |
| 304 | 1328 __ pop(rax); |
| 0 | 1329 |
| 1330 // compute beginning of parameters (r14) | |
| 304 | 1331 __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize)); |
| 0 | 1332 |
| 1333 // rdx - # of additional locals | |
| 1334 // allocate space for locals | |
| 1335 // explicitly initialize locals | |
| 1336 { | |
| 1337 Label exit, loop; | |
| 1338 __ testl(rdx, rdx); | |
| 1339 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 | |
| 1340 __ bind(loop); | |
| 304 | 1341 __ push((int) NULL_WORD); // initialize local variables |
| 0 | 1342 __ decrementl(rdx); // until everything initialized |
| 1343 __ jcc(Assembler::greater, loop); | |
| 1344 __ bind(exit); | |
| 1345 } | |
| 1346 | |
| 1347 // initialize fixed part of activation frame | |
| 1348 generate_fixed_frame(false); | |
| 1349 | |
| 1350 // make sure method is not native & not abstract | |
| 1351 #ifdef ASSERT | |
| 1352 __ movl(rax, access_flags); | |
| 1353 { | |
| 1354 Label L; | |
| 1355 __ testl(rax, JVM_ACC_NATIVE); | |
| 1356 __ jcc(Assembler::zero, L); | |
| 1357 __ stop("tried to execute native method as non-native"); | |
| 1358 __ bind(L); | |
| 1359 } | |
| 1360 { | |
| 1361 Label L; | |
| 1362 __ testl(rax, JVM_ACC_ABSTRACT); | |
| 1363 __ jcc(Assembler::zero, L); | |
| 1364 __ stop("tried to execute abstract method in interpreter"); | |
| 1365 __ bind(L); | |
| 1366 } | |
| 1367 #endif | |
| 1368 | |
| 1369 // Since at this point in the method invocation the exception | |
| 1370 // handler would try to exit the monitor of synchronized methods | |
| 1371 // which hasn't been entered yet, we set the thread local variable | |
| 1372 // _do_not_unlock_if_synchronized to true. The remove_activation | |
| 1373 // will check this flag. | |
| 1374 | |
| 1375 const Address do_not_unlock_if_synchronized(r15_thread, | |
| 1376 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 1377 __ movbool(do_not_unlock_if_synchronized, true); | |
| 1378 | |
| 1379 // increment invocation count & check for overflow | |
| 1380 Label invocation_counter_overflow; | |
| 1381 Label profile_method; | |
| 1382 Label profile_method_continue; | |
| 1383 if (inc_counter) { | |
| 1384 generate_counter_incr(&invocation_counter_overflow, | |
| 1385 &profile_method, | |
| 1386 &profile_method_continue); | |
| 1387 if (ProfileInterpreter) { | |
| 1388 __ bind(profile_method_continue); | |
| 1389 } | |
| 1390 } | |
| 1391 | |
| 1392 Label continue_after_compile; | |
| 1393 __ bind(continue_after_compile); | |
| 1394 | |
| 1395 // check for synchronized interpreted methods | |
| 1396 bang_stack_shadow_pages(false); | |
| 1397 | |
| 1398 // reset the _do_not_unlock_if_synchronized flag | |
| 1399 __ movbool(do_not_unlock_if_synchronized, false); | |
| 1400 | |
| 1401 // check for synchronized methods | |
| 1402 // Must happen AFTER invocation_counter check and stack overflow check, | |
| 1403 // so method is not locked if overflows. | |
| 1404 if (synchronized) { | |
| 1405 // Allocate monitor and lock method | |
| 1406 lock_method(); | |
| 1407 } else { | |
| 1408 // no synchronization necessary | |
| 1409 #ifdef ASSERT | |
| 1410 { | |
| 1411 Label L; | |
| 1412 __ movl(rax, access_flags); | |
| 1413 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 1414 __ jcc(Assembler::zero, L); | |
| 1415 __ stop("method needs synchronization"); | |
| 1416 __ bind(L); | |
| 1417 } | |
| 1418 #endif | |
| 1419 } | |
| 1420 | |
| 1421 // start execution | |
| 1422 #ifdef ASSERT | |
| 1423 { | |
| 1424 Label L; | |
| 1425 const Address monitor_block_top (rbp, | |
| 1426 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 304 | 1427 __ movptr(rax, monitor_block_top); |
| 1428 __ cmpptr(rax, rsp); | |
| 0 | 1429 __ jcc(Assembler::equal, L); |
| 1430 __ stop("broken stack frame setup in interpreter"); | |
| 1431 __ bind(L); | |
| 1432 } | |
| 1433 #endif | |
| 1434 | |
| 1435 // jvmti support | |
| 1436 __ notify_method_entry(); | |
| 1437 | |
| 1438 __ dispatch_next(vtos); | |
| 1439 | |
| 1440 // invocation counter overflow | |
| 1441 if (inc_counter) { | |
| 1442 if (ProfileInterpreter) { | |
| 1443 // We have decided to profile this method in the interpreter | |
| 1444 __ bind(profile_method); | |
|
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1445 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
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1446 __ set_method_data_pointer_for_bcp(); |
|
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|
1447 __ get_method(rbx); |
| 0 | 1448 __ jmp(profile_method_continue); |
| 1449 } | |
| 1450 // Handle overflow of counter and compile method | |
| 1451 __ bind(invocation_counter_overflow); | |
| 1452 generate_counter_overflow(&continue_after_compile); | |
| 1453 } | |
| 1454 | |
| 1455 return entry_point; | |
| 1456 } | |
| 1457 | |
| 1458 // Entry points | |
| 1459 // | |
| 1460 // Here we generate the various kind of entries into the interpreter. | |
| 1461 // The two main entry type are generic bytecode methods and native | |
| 1462 // call method. These both come in synchronized and non-synchronized | |
| 1463 // versions but the frame layout they create is very similar. The | |
| 1464 // other method entry types are really just special purpose entries | |
| 1465 // that are really entry and interpretation all in one. These are for | |
| 1466 // trivial methods like accessor, empty, or special math methods. | |
| 1467 // | |
| 1468 // When control flow reaches any of the entry types for the interpreter | |
| 1469 // the following holds -> | |
| 1470 // | |
| 1471 // Arguments: | |
| 1472 // | |
|
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1473 // rbx: Method* |
| 0 | 1474 // |
| 1475 // Stack layout immediately at entry | |
| 1476 // | |
| 1477 // [ return address ] <--- rsp | |
| 1478 // [ parameter n ] | |
| 1479 // ... | |
| 1480 // [ parameter 1 ] | |
| 1481 // [ expression stack ] (caller's java expression stack) | |
| 1482 | |
| 1483 // Assuming that we don't go to one of the trivial specialized entries | |
| 1484 // the stack will look like below when we are ready to execute the | |
| 1485 // first bytecode (or call the native routine). The register usage | |
| 1486 // will be as the template based interpreter expects (see | |
| 1487 // interpreter_amd64.hpp). | |
| 1488 // | |
| 1489 // local variables follow incoming parameters immediately; i.e. | |
| 1490 // the return address is moved to the end of the locals). | |
| 1491 // | |
| 1492 // [ monitor entry ] <--- rsp | |
| 1493 // ... | |
| 1494 // [ monitor entry ] | |
| 1495 // [ expr. stack bottom ] | |
| 1496 // [ saved r13 ] | |
| 1497 // [ current r14 ] | |
|
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1498 // [ Method* ] |
| 0 | 1499 // [ saved ebp ] <--- rbp |
| 1500 // [ return address ] | |
| 1501 // [ local variable m ] | |
| 1502 // ... | |
| 1503 // [ local variable 1 ] | |
| 1504 // [ parameter n ] | |
| 1505 // ... | |
| 1506 // [ parameter 1 ] <--- r14 | |
| 1507 | |
| 1508 address AbstractInterpreterGenerator::generate_method_entry( | |
| 1509 AbstractInterpreter::MethodKind kind) { | |
| 1510 // determine code generation flags | |
| 1511 bool synchronized = false; | |
| 1512 address entry_point = NULL; | |
| 1513 | |
| 1514 switch (kind) { | |
| 1515 case Interpreter::zerolocals : break; | |
| 1516 case Interpreter::zerolocals_synchronized: synchronized = true; break; | |
|
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1517 case Interpreter::native : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(false); break; |
|
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1518 case Interpreter::native_synchronized : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(true); break; |
|
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1519 case Interpreter::empty : entry_point = ((InterpreterGenerator*)this)->generate_empty_entry(); break; |
|
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1520 case Interpreter::accessor : entry_point = ((InterpreterGenerator*)this)->generate_accessor_entry(); break; |
|
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1521 case Interpreter::abstract : entry_point = ((InterpreterGenerator*)this)->generate_abstract_entry(); break; |
|
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1522 |
|
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1523 case Interpreter::java_lang_math_sin : // fall thru |
|
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1524 case Interpreter::java_lang_math_cos : // fall thru |
|
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1525 case Interpreter::java_lang_math_tan : // fall thru |
|
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1526 case Interpreter::java_lang_math_abs : // fall thru |
|
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1527 case Interpreter::java_lang_math_log : // fall thru |
|
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1528 case Interpreter::java_lang_math_log10 : // fall thru |
|
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1529 case Interpreter::java_lang_math_sqrt : // fall thru |
|
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1530 case Interpreter::java_lang_math_pow : // fall thru |
|
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1531 case Interpreter::java_lang_math_exp : entry_point = ((InterpreterGenerator*)this)->generate_math_entry(kind); break; |
|
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1532 case Interpreter::java_lang_ref_reference_get |
|
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1533 : entry_point = ((InterpreterGenerator*)this)->generate_Reference_get_entry(); break; |
|
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1534 default: |
|
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1535 fatal(err_msg("unexpected method kind: %d", kind)); |
|
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1536 break; |
| 0 | 1537 } |
| 1538 | |
| 1539 if (entry_point) { | |
| 1540 return entry_point; | |
| 1541 } | |
| 1542 | |
| 1543 return ((InterpreterGenerator*) this)-> | |
| 1544 generate_normal_entry(synchronized); | |
| 1545 } | |
| 1546 | |
|
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1547 // These should never be compiled since the interpreter will prefer |
|
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1548 // the compiled version to the intrinsic version. |
|
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1549 bool AbstractInterpreter::can_be_compiled(methodHandle m) { |
|
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1550 switch (method_kind(m)) { |
|
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1551 case Interpreter::java_lang_math_sin : // fall thru |
|
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1552 case Interpreter::java_lang_math_cos : // fall thru |
|
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1553 case Interpreter::java_lang_math_tan : // fall thru |
|
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1554 case Interpreter::java_lang_math_abs : // fall thru |
|
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1555 case Interpreter::java_lang_math_log : // fall thru |
|
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1556 case Interpreter::java_lang_math_log10 : // fall thru |
|
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1557 case Interpreter::java_lang_math_sqrt : // fall thru |
|
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1558 case Interpreter::java_lang_math_pow : // fall thru |
|
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1559 case Interpreter::java_lang_math_exp : |
|
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1560 return false; |
|
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|
1561 default: |
|
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|
1562 return true; |
|
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|
1563 } |
|
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|
1564 } |
|
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|
1565 |
| 0 | 1566 // How much stack a method activation needs in words. |
|
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1567 int AbstractInterpreter::size_top_interpreter_activation(Method* method) { |
| 0 | 1568 const int entry_size = frame::interpreter_frame_monitor_size(); |
| 1569 | |
| 1570 // total overhead size: entry_size + (saved rbp thru expr stack | |
| 1571 // bottom). be sure to change this if you add/subtract anything | |
| 1572 // to/from the overhead area | |
| 1573 const int overhead_size = | |
| 1574 -(frame::interpreter_frame_initial_sp_offset) + entry_size; | |
| 1575 | |
| 1576 const int stub_code = frame::entry_frame_after_call_words; | |
|
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|
1577 const int method_stack = (method->max_locals() + method->max_stack()) * |
| 1506 | 1578 Interpreter::stackElementWords; |
| 0 | 1579 return (overhead_size + method_stack + stub_code); |
| 1580 } | |
| 1581 | |
|
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1582 int AbstractInterpreter::layout_activation(Method* method, |
| 0 | 1583 int tempcount, |
| 1584 int popframe_extra_args, | |
| 1585 int moncount, | |
|
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1586 int caller_actual_parameters, |
| 0 | 1587 int callee_param_count, |
| 1588 int callee_locals, | |
| 1589 frame* caller, | |
| 1590 frame* interpreter_frame, | |
|
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|
1591 bool is_top_frame, |
|
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|
1592 bool is_bottom_frame) { |
| 0 | 1593 // Note: This calculation must exactly parallel the frame setup |
| 1594 // in AbstractInterpreterGenerator::generate_method_entry. | |
| 1595 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
| 1596 // The frame interpreter_frame, if not NULL, is guaranteed to be the | |
| 1597 // right size, as determined by a previous call to this method. | |
| 1598 // It is also guaranteed to be walkable even though it is in a skeletal state | |
| 1599 | |
| 1600 // fixed size of an interpreter frame: | |
| 1506 | 1601 int max_locals = method->max_locals() * Interpreter::stackElementWords; |
| 0 | 1602 int extra_locals = (method->max_locals() - method->size_of_parameters()) * |
| 1506 | 1603 Interpreter::stackElementWords; |
| 0 | 1604 |
| 1605 int overhead = frame::sender_sp_offset - | |
| 1606 frame::interpreter_frame_initial_sp_offset; | |
| 1607 // Our locals were accounted for by the caller (or last_frame_adjust | |
| 1608 // on the transistion) Since the callee parameters already account | |
| 1609 // for the callee's params we only need to account for the extra | |
| 1610 // locals. | |
| 1611 int size = overhead + | |
| 1506 | 1612 (callee_locals - callee_param_count)*Interpreter::stackElementWords + |
| 0 | 1613 moncount * frame::interpreter_frame_monitor_size() + |
| 1506 | 1614 tempcount* Interpreter::stackElementWords + popframe_extra_args; |
| 0 | 1615 if (interpreter_frame != NULL) { |
| 1616 #ifdef ASSERT | |
|
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1617 if (!EnableInvokeDynamic) |
|
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|
1618 // @@@ FIXME: Should we correct interpreter_frame_sender_sp in the calling sequences? |
|
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1619 // Probably, since deoptimization doesn't work yet. |
|
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|
1620 assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable"); |
| 0 | 1621 assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)"); |
| 1622 #endif | |
| 1623 | |
| 1624 interpreter_frame->interpreter_frame_set_method(method); | |
| 1625 // NOTE the difference in using sender_sp and | |
| 1626 // interpreter_frame_sender_sp interpreter_frame_sender_sp is | |
| 1627 // the original sp of the caller (the unextended_sp) and | |
| 1628 // sender_sp is fp+16 XXX | |
| 1629 intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; | |
| 1630 | |
|
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|
1631 #ifdef ASSERT |
|
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|
1632 if (caller->is_interpreted_frame()) { |
|
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|
1633 assert(locals < caller->fp() + frame::interpreter_frame_initial_sp_offset, "bad placement"); |
|
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|
1634 } |
|
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|
1635 #endif |
|
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|
1636 |
| 0 | 1637 interpreter_frame->interpreter_frame_set_locals(locals); |
| 1638 BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); | |
| 1639 BasicObjectLock* monbot = montop - moncount; | |
| 1640 interpreter_frame->interpreter_frame_set_monitor_end(monbot); | |
| 1641 | |
| 1642 // Set last_sp | |
| 1643 intptr_t* esp = (intptr_t*) monbot - | |
| 1506 | 1644 tempcount*Interpreter::stackElementWords - |
| 0 | 1645 popframe_extra_args; |
| 1646 interpreter_frame->interpreter_frame_set_last_sp(esp); | |
| 1647 | |
| 1648 // All frames but the initial (oldest) interpreter frame we fill in have | |
| 1649 // a value for sender_sp that allows walking the stack but isn't | |
| 1650 // truly correct. Correct the value here. | |
| 1651 if (extra_locals != 0 && | |
| 1652 interpreter_frame->sender_sp() == | |
| 1653 interpreter_frame->interpreter_frame_sender_sp()) { | |
| 1654 interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + | |
| 1655 extra_locals); | |
| 1656 } | |
| 1657 *interpreter_frame->interpreter_frame_cache_addr() = | |
| 1658 method->constants()->cache(); | |
| 1659 } | |
| 1660 return size; | |
| 1661 } | |
| 1662 | |
| 1663 //----------------------------------------------------------------------------- | |
| 1664 // Exceptions | |
| 1665 | |
| 1666 void TemplateInterpreterGenerator::generate_throw_exception() { | |
| 1667 // Entry point in previous activation (i.e., if the caller was | |
| 1668 // interpreted) | |
| 1669 Interpreter::_rethrow_exception_entry = __ pc(); | |
| 1670 // Restore sp to interpreter_frame_last_sp even though we are going | |
| 1671 // to empty the expression stack for the exception processing. | |
| 304 | 1672 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
| 0 | 1673 // rax: exception |
| 1674 // rdx: return address/pc that threw exception | |
| 1675 __ restore_bcp(); // r13 points to call/send | |
| 1676 __ restore_locals(); | |
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1677 __ reinit_heapbase(); // restore r12 as heapbase. |
| 0 | 1678 // Entry point for exceptions thrown within interpreter code |
| 1679 Interpreter::_throw_exception_entry = __ pc(); | |
| 1680 // expression stack is undefined here | |
| 1681 // rax: exception | |
| 1682 // r13: exception bcp | |
| 1683 __ verify_oop(rax); | |
| 304 | 1684 __ mov(c_rarg1, rax); |
| 0 | 1685 |
| 1686 // expression stack must be empty before entering the VM in case of | |
| 1687 // an exception | |
| 1688 __ empty_expression_stack(); | |
| 1689 // find exception handler address and preserve exception oop | |
| 1690 __ call_VM(rdx, | |
| 1691 CAST_FROM_FN_PTR(address, | |
| 1692 InterpreterRuntime::exception_handler_for_exception), | |
| 1693 c_rarg1); | |
| 1694 // rax: exception handler entry point | |
| 1695 // rdx: preserved exception oop | |
| 1696 // r13: bcp for exception handler | |
| 1697 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
| 1698 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
| 1699 | |
| 1700 // If the exception is not handled in the current frame the frame is | |
| 1701 // removed and the exception is rethrown (i.e. exception | |
| 1702 // continuation is _rethrow_exception). | |
| 1703 // | |
| 1704 // Note: At this point the bci is still the bxi for the instruction | |
| 1705 // which caused the exception and the expression stack is | |
| 1706 // empty. Thus, for any VM calls at this point, GC will find a legal | |
| 1707 // oop map (with empty expression stack). | |
| 1708 | |
| 1709 // In current activation | |
| 1710 // tos: exception | |
| 1711 // esi: exception bcp | |
| 1712 | |
| 1713 // | |
| 1714 // JVMTI PopFrame support | |
| 1715 // | |
| 1716 | |
| 1717 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
| 1718 __ empty_expression_stack(); | |
| 1719 // Set the popframe_processing bit in pending_popframe_condition | |
| 1720 // indicating that we are currently handling popframe, so that | |
| 1721 // call_VMs that may happen later do not trigger new popframe | |
| 1722 // handling cycles. | |
| 1723 __ movl(rdx, Address(r15_thread, JavaThread::popframe_condition_offset())); | |
| 1724 __ orl(rdx, JavaThread::popframe_processing_bit); | |
| 1725 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), rdx); | |
| 1726 | |
| 1727 { | |
| 1728 // Check to see whether we are returning to a deoptimized frame. | |
| 1729 // (The PopFrame call ensures that the caller of the popped frame is | |
| 1730 // either interpreted or compiled and deoptimizes it if compiled.) | |
| 1731 // In this case, we can't call dispatch_next() after the frame is | |
| 1732 // popped, but instead must save the incoming arguments and restore | |
| 1733 // them after deoptimization has occurred. | |
| 1734 // | |
| 1735 // Note that we don't compare the return PC against the | |
| 1736 // deoptimization blob's unpack entry because of the presence of | |
| 1737 // adapter frames in C2. | |
| 1738 Label caller_not_deoptimized; | |
| 304 | 1739 __ movptr(c_rarg1, Address(rbp, frame::return_addr_offset * wordSize)); |
| 0 | 1740 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
| 1741 InterpreterRuntime::interpreter_contains), c_rarg1); | |
| 1742 __ testl(rax, rax); | |
| 1743 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
| 1744 | |
| 1745 // Compute size of arguments for saving when returning to | |
| 1746 // deoptimized caller | |
| 1747 __ get_method(rax); | |
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1748 __ movptr(rax, Address(rax, Method::const_offset())); |
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1749 __ load_unsigned_short(rax, Address(rax, in_bytes(ConstMethod:: |
| 0 | 1750 size_of_parameters_offset()))); |
| 1506 | 1751 __ shll(rax, Interpreter::logStackElementSize); |
| 0 | 1752 __ restore_locals(); // XXX do we need this? |
| 304 | 1753 __ subptr(r14, rax); |
| 1754 __ addptr(r14, wordSize); | |
| 0 | 1755 // Save these arguments |
| 1756 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, | |
| 1757 Deoptimization:: | |
| 1758 popframe_preserve_args), | |
| 1759 r15_thread, rax, r14); | |
| 1760 | |
| 1761 __ remove_activation(vtos, rdx, | |
| 1762 /* throw_monitor_exception */ false, | |
| 1763 /* install_monitor_exception */ false, | |
| 1764 /* notify_jvmdi */ false); | |
| 1765 | |
| 1766 // Inform deoptimization that it is responsible for restoring | |
| 1767 // these arguments | |
| 1768 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
| 1769 JavaThread::popframe_force_deopt_reexecution_bit); | |
| 1770 | |
| 1771 // Continue in deoptimization handler | |
| 1772 __ jmp(rdx); | |
| 1773 | |
| 1774 __ bind(caller_not_deoptimized); | |
| 1775 } | |
| 1776 | |
| 1777 __ remove_activation(vtos, rdx, /* rdx result (retaddr) is not used */ | |
| 1778 /* throw_monitor_exception */ false, | |
| 1779 /* install_monitor_exception */ false, | |
| 1780 /* notify_jvmdi */ false); | |
| 1781 | |
| 1782 // Finish with popframe handling | |
| 1783 // A previous I2C followed by a deoptimization might have moved the | |
| 1784 // outgoing arguments further up the stack. PopFrame expects the | |
| 1785 // mutations to those outgoing arguments to be preserved and other | |
| 1786 // constraints basically require this frame to look exactly as | |
| 1787 // though it had previously invoked an interpreted activation with | |
| 1788 // no space between the top of the expression stack (current | |
| 1789 // last_sp) and the top of stack. Rather than force deopt to | |
| 1790 // maintain this kind of invariant all the time we call a small | |
| 1791 // fixup routine to move the mutated arguments onto the top of our | |
| 1792 // expression stack if necessary. | |
| 304 | 1793 __ mov(c_rarg1, rsp); |
| 1794 __ movptr(c_rarg2, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
| 0 | 1795 // PC must point into interpreter here |
| 1796 __ set_last_Java_frame(noreg, rbp, __ pc()); | |
| 1797 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), r15_thread, c_rarg1, c_rarg2); | |
| 1798 __ reset_last_Java_frame(true, true); | |
| 1799 // Restore the last_sp and null it out | |
| 304 | 1800 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
| 1801 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); | |
| 0 | 1802 |
| 1803 __ restore_bcp(); // XXX do we need this? | |
| 1804 __ restore_locals(); // XXX do we need this? | |
| 1805 // The method data pointer was incremented already during | |
| 1806 // call profiling. We have to restore the mdp for the current bcp. | |
| 1807 if (ProfileInterpreter) { | |
| 1808 __ set_method_data_pointer_for_bcp(); | |
| 1809 } | |
| 1810 | |
| 1811 // Clear the popframe condition flag | |
| 1812 __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), | |
| 1813 JavaThread::popframe_inactive); | |
| 1814 | |
| 1815 __ dispatch_next(vtos); | |
| 1816 // end of PopFrame support | |
| 1817 | |
| 1818 Interpreter::_remove_activation_entry = __ pc(); | |
| 1819 | |
| 1820 // preserve exception over this code sequence | |
| 1821 __ pop_ptr(rax); | |
| 304 | 1822 __ movptr(Address(r15_thread, JavaThread::vm_result_offset()), rax); |
| 0 | 1823 // remove the activation (without doing throws on illegalMonitorExceptions) |
| 1824 __ remove_activation(vtos, rdx, false, true, false); | |
| 1825 // restore exception | |
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1826 __ get_vm_result(rax, r15_thread); |
| 0 | 1827 |
| 1828 // In between activations - previous activation type unknown yet | |
| 1829 // compute continuation point - the continuation point expects the | |
| 1830 // following registers set up: | |
| 1831 // | |
| 1832 // rax: exception | |
| 1833 // rdx: return address/pc that threw exception | |
| 1834 // rsp: expression stack of caller | |
| 1835 // rbp: ebp of caller | |
| 304 | 1836 __ push(rax); // save exception |
| 1837 __ push(rdx); // save return address | |
| 0 | 1838 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, |
| 1839 SharedRuntime::exception_handler_for_return_address), | |
| 1295 | 1840 r15_thread, rdx); |
| 304 | 1841 __ mov(rbx, rax); // save exception handler |
| 1842 __ pop(rdx); // restore return address | |
| 1843 __ pop(rax); // restore exception | |
| 0 | 1844 // Note that an "issuing PC" is actually the next PC after the call |
| 1845 __ jmp(rbx); // jump to exception | |
| 1846 // handler of caller | |
| 1847 } | |
| 1848 | |
| 1849 | |
| 1850 // | |
| 1851 // JVMTI ForceEarlyReturn support | |
| 1852 // | |
| 1853 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
| 1854 address entry = __ pc(); | |
| 1855 | |
| 1856 __ restore_bcp(); | |
| 1857 __ restore_locals(); | |
| 1858 __ empty_expression_stack(); | |
| 1859 __ load_earlyret_value(state); | |
| 1860 | |
| 304 | 1861 __ movptr(rdx, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
| 0 | 1862 Address cond_addr(rdx, JvmtiThreadState::earlyret_state_offset()); |
| 1863 | |
| 1864 // Clear the earlyret state | |
| 1865 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
| 1866 | |
| 1867 __ remove_activation(state, rsi, | |
| 1868 false, /* throw_monitor_exception */ | |
| 1869 false, /* install_monitor_exception */ | |
| 1870 true); /* notify_jvmdi */ | |
| 1871 __ jmp(rsi); | |
| 1872 | |
| 1873 return entry; | |
| 1874 } // end of ForceEarlyReturn support | |
| 1875 | |
| 1876 | |
| 1877 //----------------------------------------------------------------------------- | |
| 1878 // Helper for vtos entry point generation | |
| 1879 | |
| 1880 void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t, | |
| 1881 address& bep, | |
| 1882 address& cep, | |
| 1883 address& sep, | |
| 1884 address& aep, | |
| 1885 address& iep, | |
| 1886 address& lep, | |
| 1887 address& fep, | |
| 1888 address& dep, | |
| 1889 address& vep) { | |
| 1890 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
| 1891 Label L; | |
| 1892 aep = __ pc(); __ push_ptr(); __ jmp(L); | |
| 1893 fep = __ pc(); __ push_f(); __ jmp(L); | |
| 1894 dep = __ pc(); __ push_d(); __ jmp(L); | |
| 1895 lep = __ pc(); __ push_l(); __ jmp(L); | |
| 1896 bep = cep = sep = | |
| 1897 iep = __ pc(); __ push_i(); | |
| 1898 vep = __ pc(); | |
| 1899 __ bind(L); | |
| 1900 generate_and_dispatch(t); | |
| 1901 } | |
| 1902 | |
| 1903 | |
| 1904 //----------------------------------------------------------------------------- | |
| 1905 // Generation of individual instructions | |
| 1906 | |
| 1907 // helpers for generate_and_dispatch | |
| 1908 | |
| 1909 | |
| 1910 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
| 1911 : TemplateInterpreterGenerator(code) { | |
| 1912 generate_all(); // down here so it can be "virtual" | |
| 1913 } | |
| 1914 | |
| 1915 //----------------------------------------------------------------------------- | |
| 1916 | |
| 1917 // Non-product code | |
| 1918 #ifndef PRODUCT | |
| 1919 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
| 1920 address entry = __ pc(); | |
| 1921 | |
| 1922 __ push(state); | |
| 304 | 1923 __ push(c_rarg0); |
| 1924 __ push(c_rarg1); | |
| 1925 __ push(c_rarg2); | |
| 1926 __ push(c_rarg3); | |
| 1927 __ mov(c_rarg2, rax); // Pass itos | |
| 0 | 1928 #ifdef _WIN64 |
| 1929 __ movflt(xmm3, xmm0); // Pass ftos | |
| 1930 #endif | |
| 1931 __ call_VM(noreg, | |
| 1932 CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), | |
| 1933 c_rarg1, c_rarg2, c_rarg3); | |
| 304 | 1934 __ pop(c_rarg3); |
| 1935 __ pop(c_rarg2); | |
| 1936 __ pop(c_rarg1); | |
| 1937 __ pop(c_rarg0); | |
| 0 | 1938 __ pop(state); |
| 1939 __ ret(0); // return from result handler | |
| 1940 | |
| 1941 return entry; | |
| 1942 } | |
| 1943 | |
| 1944 void TemplateInterpreterGenerator::count_bytecode() { | |
| 1945 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); | |
| 1946 } | |
| 1947 | |
| 1948 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
| 1949 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); | |
| 1950 } | |
| 1951 | |
| 1952 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
| 1953 __ mov32(rbx, ExternalAddress((address) &BytecodePairHistogram::_index)); | |
| 1954 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
| 1955 __ orl(rbx, | |
| 1956 ((int) t->bytecode()) << | |
| 1957 BytecodePairHistogram::log2_number_of_codes); | |
| 1958 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
| 1959 __ lea(rscratch1, ExternalAddress((address) BytecodePairHistogram::_counters)); | |
| 1960 __ incrementl(Address(rscratch1, rbx, Address::times_4)); | |
| 1961 } | |
| 1962 | |
| 1963 | |
| 1964 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
| 1965 // Call a little run-time stub to avoid blow-up for each bytecode. | |
| 1966 // The run-time runtime saves the right registers, depending on | |
| 1967 // the tosca in-state for the given template. | |
| 1968 | |
| 1969 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
| 1970 "entry must have been generated"); | |
|
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1971 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) |
| 304 | 1972 __ andptr(rsp, -16); // align stack as required by ABI |
| 0 | 1973 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); |
| 304 | 1974 __ mov(rsp, r12); // restore sp |
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1975 __ reinit_heapbase(); |
| 0 | 1976 } |
| 1977 | |
| 1978 | |
| 1979 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
| 1980 Label L; | |
| 1981 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
| 1982 StopInterpreterAt); | |
| 1983 __ jcc(Assembler::notEqual, L); | |
| 1984 __ int3(); | |
| 1985 __ bind(L); | |
| 1986 } | |
| 1987 #endif // !PRODUCT | |
| 304 | 1988 #endif // ! CC_INTERP |